Straightway stop valve

FIELD: valving.

SUBSTANCE: straightway stop valve comprises housing with inlet pressure port and outlet port for flowing fluid. The housing receives closure member, driving link of the closure member connected with the handle for valve control, and single-acting positive-displacement servomotor. The pressure chamber of the servomotor is in communication with the inlet port. The straightway stop valve is provided with the preliminary loaded flexible member mounted inside the housing. The movable outlet link of the flexible member is made for permitting single action on the driving link of the closure member and its movement under the action of the flexible member from its any position to the closure position of the closure member. The single-acting positive-displacement servomotor is made so that, under the action of pressure, the pressure chamber provides the action of its output link on the output link of the flexible member directed oppositely to the direction of flexible force of the flexible member and movement of the output link in the position in which it does not act on the driving link of the closure member and driving link can freely move under the external control action between the closure position and open position of the closure member. Under the action of pressure in the pressure chamber, the output link of the flexible member is held in the mentioned above position. When there is no pressure, the output link of the positive-displacement servomotor together with the driving link returns under the action of the flexible member to the closure position of the closure member.

EFFECT: enhanced reliability.

 

Main area of use of the invention - plumbing sanitary fittings. The invention relates to valves and faucets and more particularly to reduced shut-off valves for liquids or gases, self-closing upon termination of the working operations, contains controls for valves in which the fluid or gas from the pipeline continuously operates a piston, diaphragm or bellows, and, according to the distinctive features of the invention, the means for preventing accidental or arbitrary action of the valve contains a spring that opposes their inclusion.

Well-known pass shut-off valve, designed as a removable valve head mounted in a threaded socket housing water tap or faucet hot and cold water, comprising a housing with an inlet pressure and outlet openings for passage of water, which has a stop valve with a drive element in the form of a rotary shaft connected with the handle for operating the valve.

Known for passing off valve, made in the form of a removable cartridge that is installed in the socket housing lever faucet or faucet hot and cold water, comprising a housing with an inlet pressure and outlet openings for passage of water, which has a stop valve and prepodneseno the locking member in the form of a movable arm, associated with the handle to control valve (see, for example, patent DE 33991752, CL F 16 K 11/078, 10.07.1997).

At present almost everywhere in the world there is a shortage of fresh water, resulting in many communities, the supply of drinking water in the water supply is on the daily schedule. Under these conditions, when applying the above well-known passage shut-off valves are cases of unintentional abandonment of water taps or faucets in the open state during or after the termination of the water in the water that when switching pressure often leads to flooding of residential areas. This usually occurs with the participation of young children and is accompanied by major material damage.

Known for passing off valve, self-closing after a predetermined time after the opening made in the form of a removable valve head mounted in a threaded socket housing water tap or faucet hot and cold water, comprising a housing with an inlet pressure and outlet openings for passage of water, which has a stop valve, a driving link of the locking member in the form of a rotary shaft connected with the handle for operating the valve, and a helical drive spring/ mechanical timer based on the time of customerism, ratchet mechanism for cocking the spring simultaneously with the opening of the shut-off valve with lever and a friction clutch to ensure closure of the valve with the handle regardless of the timer (see, for example, patent RU 2173807 C2, CL F16K 21/04, 20.09.2001). The specified lock self-closing stop valve, along with the reduction of water, allows to solve the problem of preventing accidental uncontrolled water discharge through the valve. However, this valve is not widespread for these purposes due to some inconvenience in your use of them in everyday life, a significantly higher cost and lower reliability compared to conventional shut-off valves do not have this function. Inconveniences in use due to the fact that every time you open and the control valve with the handle for operating the valve by the user requires an application some additional muscular energy to overcome the clutch torque of the friction clutch with the trigger and the cocking of the spring that makes a significant difference in the use of the valve in comparison with the conventional shut-off valves. Inconvenience and also makes the need to repeat the opening of the valve after its samozakryvaniya when sampling large volumes of water. Significant p is the increased cost caused by the use of quite complex and precise manufacturing mechanical timer and the other nodes, and the lowering of the reliability due to the fact that the mechanism of the control valve contains more heavily loaded links, such as a friction clutch, a ratchet mechanism, a mechanical timer and others, constantly involved in the regulation valve with handle. This mode of operation of these valve mechanisms inevitably leads to rapid wear, damage, and sometimes jamming, which in turn can also cause a serious accident.

Also known bushing shut-off valves, control mechanisms which are equipped with electric actuators, electronic converters physical parameters of the working medium at the inlet and outlet valve and a programmable controller. The use of such valves, in principle, allows to solve many problems, including problems prevent flooding of homes, water saving, etc. However, the use of electrical and electronic devices in conditions of high humidity, such as, for example, baths and showers associated with a significant rise in prices. In addition, the failure or sudden disconnection of the electric power in the presence of such devices may also be another reason for not less flawed accidents. Finally, the famous pass shut-off valve, self-closing when outstay pressure at its input, comprising a housing with an inlet pressure and outlet openings for passage of the working medium, which has a stop valve, a driving link of the locking member in the form of a screw or eccentric connected with a swivel in a vertical plane with a massive arm, and one-way volume control motor with an output element in the form of a membrane, a pressure chamber which is in communication with the inlet to the membrane by a pressure chamber attached to the locking body, and the opposite sides of the membrane is installed pusher, interacting with a drive element of the shut-off body (see, for example, autospid. SU 1765588 A, class F 16 K 31/12, 21/04, 30.09.1992). In this flow shut-off valve developed by the action of the pressure force on the membrane due to the friction force between the plunger and the screw or eccentric creates on the last braking torque holding massive arm in the prescribed open position. In the absence of pressure at the inlet valve braking torque decreases, the massive arm-load under the action of the weight is rotated about its own axis and acts on the plunger, resulting in a shut-off valve is closed. The described valve has the same drawbacks as mentioned above the entrance shut-off valve with a mechanical timer: low durability and inconvenience of use. The reason for a low $ is vechnosti similar: every time you open and the control valve by using the handle to overcome the braking torque of the turning arm, that inevitably causes heavy wear of the interacting parts (screws, eccentric pusher). Disadvantages are differences in the methods of installation and management techniques such valves in comparison with the traditional because of the presence of cargo and increased efforts on the handle. Describes the known pass shut-off valve in all of its essential features is the closest to the proposed valve.

The objective of the invention is to improve describes the known flow shut-off valve, self-closing when otsutstvovanie at its input, aimed at eliminating the above drawbacks. In this invention the task of creating such a flow shut-off valve, self-closing in the absence of pressure at his entrance, whose reliability has been significantly improved in comparison with known valves, and which method of installation and use does not differ from conventional shut-off valves, and for its functioning has not been used if no other source of energy, in addition to the potential energy of the working medium in the overlapped valve in the pipeline.

The solution to this problem by the invention is achieved by passing the shut-off valve, self-closing in the absence of pressure at its input, the content is of ASI tank with inlet pressure and outlet openings for passage of the working environment, which has a stop valve, a driving link of the locking member associated with the handle for operating the valve, and a one-way volume control motor, a pressure chamber which is in communication with the inlet, equipped with a set in the case of pre-strained elastic element, movable output element which is made with the possibility of unilateral effects on driving link of the locking member and moving the force of the elastic element from any position in the closed position of the locking body, with one-way volume control motor made with the possibility of interaction of its output link output link of the elastic element, overcoming the efforts of the elastic element pressure in the pressure chamber and move output link of the elastic element in the position in which terminated its engagement with a drive element of the locking member and there shall be free movement of the drive link of the locking member between positions closing and opening through the handle for operating the valve, holding the output level of the elastic element in the above-mentioned position by the pressure in the pressure chamber, and in the absence of pressure - displacement output level volume control motor and the drive link shut-off organ Polo is giving the closing of the shut-off body by a force of the elastic element (claim 1 of the formula).

Introduction to passing the shut-off valve prestressed elastic element, performing it with the possibility of unilateral effects on driving link of the locking member and the transfer shut-off valve of any of its provisions in the closed position provide automatic closing of the valve when the supply pressure, and subsequent inclusion of the pressure at its input the location of the valve in the closed position. The larger of the servo motor with the opportunity to interact only with the elastic element and removal of the elastic element from engagement with the driving link mechanism for controlling the shut-off body in the presence of pressure at the entrance ensures operation without energy consumption outside and relieve the user of any additional loads or actions during manual opening and throttling valve. Since the actuation of the valve mechanisms involved in its closing, is hundreds of times less frequently (twice at each interrupt the supply of pressure)than manual impact on the governance mechanisms of the shut-off valve is in the normal mode of its operation (for example, water tap in the kitchen), the durability of the proposed valve, in comparison with the described known valves, in which all the elements of the mechanisms of RA is utaut each manual exposure, increases approximately in the same ratio.

Further the invention the task of finding the most preferred versions of the design of the proposed shut-off valve in relation to the most common traditional types of feedthrough isolation valves for taps hot and cold water.

The first option concerns the passage shut-off valve with a drive element of the locking member in the form of a rotary shaft. The solution is achieved by the fact that the valve is designed as a removable valve head mounted in a threaded socket housing water tap or faucet hot and cold water input pressure and output channels containing the driving link of the locking member in the form of a rotary shaft, with one-way volume control motor is made in the form of a circular cylinder formed in the housing coaxially with the shaft, and the output level volume control motor is made in the form of a piston in the form of a flat annular disc movably mounted in the cylinder and the shaft, the rotary shaft from its end facing the shut-off body is made of the axial hole connected with the pressure chamber volume of the servo motor for supplying a pressure input from the pressure hole, prestressed elastic element is designed in the ideal cylindrical springs, set in the casing coaxially with the cylinder and the rotary shaft, the output link of the elastic element is made in the form of a plunger, slidably mounted on the shaft and having the form of a cylindrical sleeve with a flange for support of the spring, the plunger is placed in covering it from the outside and connected to the housing of the guide sleeve made of at least one axial groove, and provided with at least one radial protrusion intended to enter into an axial groove on the guide sleeve, a rotary shaft on its cylindrical surface, at least one radial bore in which is installed by at least one radial cylindrical spike, and the pusher is equipped with at least one cylindrical groove Cam in the form of a pass-through window in the sleeve pusher screw and linear axial sections of the working profile, interacting with radial cylindrical tenon on the rotary shaft, the height of the slot of the Cam is equal to the course of the pusher, and the angular extent of the rotation shaft between positions closing and opening the stop valve, shut-off valve is made in the form of a flat slide valve, with the associated rotatable with the shaft and mounted in the housing toggling plates with through grooves at the Central location of the input pressure channel p sibalom the socket housing, the tap or faucet for the message of the axial bore in the rotary shaft with the input pressure hole in the center of the rotary plate valve body is formed a through hole, the mechanical part of the shaft is made with a tight fit to the Central part facing the shaft end surface of the rotary plate, the Central part of the mirror rotary plate is in communication with the input pressure opening, for example, by passing through the center of the plate grooves, connected with its discharge groove radial location of the input pressure channel into the threaded socket housing water tap or faucet for the message of the axial bore in the rotary shaft with the input pressure and the opening between facing the shaft end surface of the rotary plate and the end of the shaft lumen formed, for example, by a wavy spring plate (PP, 3, 4 formulas).

This embodiment of the flow shut-off valve allows you to ensure reliable operation, durability, ease of use and can be installed in the chassis with the screw Jack as newly produced water taps or faucets and replacement already in use.

The following options constructive implementation of the proposed valve relate to the widely used single lever taps or faucets hot and cold water. The first one is the most preferred and is that valve made in the form with the roadways of the cartridge, installed in the socket housing lever faucet or faucet hot and cold water input pressure and output channels containing the driving link of the locking member in the form of a movable arm, with one-way volume control motor is made in the form of non-circular cylinder, the axis of which is parallel to the longitudinal axis of the housing of the cartridge, the output level volume control motor is made in the form of a piston in the form of a flat liner, movably mounted in the cylinder, and the pressure chamber volume of the servo motor in communication with the inlet for passage of water, prestressed elastic element is designed as torsion springs installed on is connected to the Chuck body, the spring-holder, the output link of the elastic element is designed as passing through the wall of the housing of the rod attached to the plunger G-shaped and the piston, and a plunger provided with a contact point for the transmission of motion to the rolling lever arm is made with a ball bearing and equipped with attached perpendicular to its longitudinal axis plate shoulder for engagement with the contact stop on the plunger and the shoulder with a ball for transmitting control movement of the locking body, the locking body in the form of a flat slide valve containing the mobile, fixed the base plate with through grooves, the mirror are parallel to the longitudinal axis of the valve body, the movable plate is connected to the planet carrier, made in the form of a lever with an eye on its end for engagement with a ball, and a drive rod formed rotary support, for example, in the form of a cylindrical thorn and stone, designed for entry into the longitudinal guide groove on the base plate when it is intended for installation in a mixer of hot and cold water, it is made of accommodation in the case of two such elastic elements and two volumetric motors, connect the pressure chambers of each of the servo motors to the input holes, one for cold water, other - hot, this arm is made rocking and swivel relative to the housing and the plate, the shoulder on the lever is made in the form of an angular sector with the opportunity to interact with the contact lugs on the pushers output links both elastic elements and with stops to limit rotation of the lever when the temperature of the water at the output of the mixer (PP, 6 formulas).

This embodiment of the flow shut-off valve allows you to ensure reliable operation, durability, security applications and can be installed in the chassis as newly manufactured, and already in use tap one the lever faucets or faucets with slot under the removable cartridge.

Next, the invention features a variant of the construction of the proposed valve, whereby it is made in the form of a single lever faucet or faucet hot and cold water, containing a stop valve in the form of a removable cartridge with a drive element of the locking member in the form of a movable arm mounted on the lever cartridge, with one-way volume control motor is made in the form of a circular cylinder that is installed in the valve body or mixer, the output level volume control motor is made in the form of a piston in the form of a flat disk movably mounted in the cylinder, the valve body is made with a channel for connecting the pressure chamber volume of the servo motor to the input pressure opening, pre - tight elastic element is designed as a cylindrical spring, the output link of the elastic element is made in the form of a Central rod, movably mounted in covering it from the outside and connected to the housing of the guide sleeve with the slot of the stop spring, a rod connected to one side with a flange for support of the spring and piston, and on the other with a plate for cooperation with a movable arm by means of the pusher and contact the emphasis made on the handle, cylinder, piston, spring, piston rod flange and the plate is designed as a removable drive unit, to the pus which is formed by the cylinder liner, connected to the guide sleeve when it is being executed in the form of a mixer of hot and cold water, the body is made from the condition of two of such elastic elements and two volumetric motors, connect the pressure chambers of each of the servo motors to the inlet, one outlet for cold water, one for hot, and the pusher is mounted for engagement with the plates of stocks of both motors, and the contact stress on the movable handle is in the form of an angular sector (PP, 8, 9 formula).

This embodiment of the flow shut-off valve allows through modernization single lever taps with shut-off valve in the form of a replaceable cartridge (cartridge) to ensure the safety of their use.

The invention is tasked with ensuring convenience single lever faucets hot and cold water valve, self-closing in the absence of pressure at its input if one of the input channels for a long time off the water supply. The solution to this problem is achieved by the fact that in order to ensure convenient use of the mixer in the case of long deliberate termination of the water supply to one of the input pressure channel mixer fitted installed at the entrance to the suck-back valves, and Canalys mixer communicated with each other via integrated into the housing of the mixer pass shut-off valve with manual switch (paragraph 10 of the formula).

Variants special cases of the invention within its scope, can be greatly enhanced with consideration of the diversity of mechanisms to control the shut-off body of the valve and the shut-off bodies, such as flat, spherical or conical locking element, movement of the drive link, such as translational or rotary, as well as from species transmission mechanism for converting the movement required for gate valve kind of movement, for example, progressive swing forward in forward gear ratio, rocking in a progressive, etc., design one-way volume control motor, for example, in the form of a membrane element, bellows, flexible shell, a rotary volume of the hydraulic motor and the like, constructive design of the elastic element, for example, in the form of a cylinder of compressed gas, the bellows or flexible shell, filled with gas or liquid, spiral or torsion spring, etc.

In accordance with the above for explanation of the invention provides a generalized flow diagram shut-off valve, self-closing in the absence of pressure at its input, in which the shut-off valve is shown with the locking body in the form of a flat valve with a drive link Zap REGO body in the form of a slide, associated with the handle for operating the valve in the form of a swinging arm, with a volume control motor in the form of a plunger cylinder and an elastic element in the form of a spring shock absorber.

In the drawings illustrating the invention, is shown:

Figure 1. Generalised flow shut-off valve, self-closing in the absence of pressure at its input.

Figure 2. A longitudinal section of a flow shut-off valve in the form of a valve head to the faucet or mixer with the Central location of the input pressure channel into the threaded socket of the housing.

Figure 3. Cross-section of the valve head 2.

Figure 4. A longitudinal section of a fragment of a valve head radial location of the input pressure channel into the threaded socket of the valve body.

Figure 5. Sketches the main elements of a valve head with a Central location of the inlet.

6. A longitudinal section of a flow shut-off valve in the form of a removable cartridge for single lever mixer tap hot and cold water.

7. Top view of the cartridge of figure 6 with the removed handle.

Fig. Cross section a-a cartridge figure 6.

Fig.9. Cross section b-b cartridge figure 6.

Figure 10. Sketches the main elements of the cartridge of figure 6.

11. Embodiment of a self-closing flow shut-off valve VI is e single lever mixer tap hot and cold water shut-off body in the form of a removable cartridge.

Fig. Longitudinal section of the removable drive unit for a shutoff valve figure 11.

Generalised flow shut-off valve, self-closing in the absence of pressure at its input, as shown in figure 1. The valve includes a housing 5 with the input pressure opening 13 and the outlet 1. In the building there is a stop valve 2, the driving link 4 locking member associated with the handle 3 for operating the valve, and the volume control motor 11 unilateral actions with the output element 8. Pressure chamber 12 volume control motor 11 is in communication with the input pressure hole 13. The movement of the output link 8 of the servo motor 11 under the action of pressure p in the pressure chamber 12 is possible only in the side opposite to the pressure chamber 12. In the reverse direction of the output link 8 volume control motor 11 can be moved only from external influence. The valve body is installed prestressed elastic element 6, movable output element 7 which is made with the possibility of impacts on the transmission link 4 shut-off organ, directed in the direction of closing the valve body 2. Geometric and strength parameters of the elastic element 6 is selected from the conditions for ensuring movement of the drive element 4 of the locking member from any possible position 10, corresponding to the closing zaporog the body 2. The volume control motor 11 is made and located with respect to the output link of the elastic element so as to ensure the cooperation of its output link 8 with the output element 7 of the elastic element 6, aimed at overcoming the efforts of the elastic element 6, and the movement of the output element 7 by the action of the pressure p in the pressure chamber 12 at the position 9 in which it becomes inaccessible to the drive element 4 of the locking member 2. While driving element 4 receives the free movement with the arm 3 under the action of external control F in area h between positions 10 and closing position 9 of the opening of the valve body 2.

Operates the valve as follows. In the absence of pressure p in front of the entrance hole 13 (1) the force from the preliminary deformation of the elastic element 6 of the drive element 4 of the locking member is held in the end position 10 closing the shut-off body 2 together with the output element of volume 8 of the servo motor 11. When the supply pressure p to the inlet 13 and achievement in the pressure chamber 12 of a magnitude sufficient to overcome the volume control motor 11 effort from the preliminary deformation of the elastic element 6, the output link 7 of the elastic element 6 shall be expedited by the output link 8 volume control motor 11 is in its extreme position 9 and arrivalsa there throughout time pressure p in front of the entrance opening 13. Due to the fact that the output link 7 of the elastic element 6 is designed in such a way that its impact on the driving link 4 control mechanism shut-off body is possible only in the direction of its closing, the driving link 4 and the locking body 2 when moving the output element 7 of the elastic element 6 under the force output link 8 volume control motor 11 in the direction of position 9 remains in the closed position 10 and is exempt from any interaction with the output element 7 of the elastic element. After that, the regulation of the fluid flow through the shut-off valve is made in the usual way by an external impact F on the handle 3.

When disconnecting the pressure p in front of the entrance hole 13, followed by a drop efforts on the output link of volume 8 of the servo motor 11, if the shutoff valve is open and the driving link 4 of the locking member to this point is anywhere between positions 10 closing the valve 9 open, the force of the elastic element 6 output link 8 volume control motor 11, the driving link 4 of the locking body and the locking body 2 moves to position 10, corresponding to the closing of the valve. If at the moment of disconnection of the pressure p and the valve is closed and the shut-off body 2 and the driving link 4 are in position 10, it will only joint moving output the links 8 and 7 of volume of the servo motor 11 and the elastic element 8 from position 9 to position 10, while driving link 4 of the locking member will remain in place.

Figure 2 shows an example of option execution flow shut-off valve (PP-3 claims) in the form of a valve head mounted in a threaded socket 19 of body water tap or faucet hot and cold water with a centrally located inlet pressure channel 47 and radially positioned outlet channel 44. The valve is mounted in the housing 26 with the screw thread, with the input pressure opening 46 and outlet 45. Drive link mechanism control shut-off valve made in the form of the rotary shaft 32 associated with the handle 30 to regulate the flow through the valve. Surround servo motor made in the form of a circular cylinder 40 formed in the housing 26 coaxially with the shaft 32 and the output link of the volume of the servo motor is made in the form of the piston 21 in the form of a flat annular disc movably mounted in the cylinder 40 and the shaft 32. The surface of the piston 21, the mating with the cylinder 40 and the shaft 32, and is sealed with an elastic sealing rings 22 and 23. For messages Plenum volume 42 of the servo motor with the discharge hole 46 on the end of the rotary shaft 32 from the locking member is made of the axial hole 43, United with the radial holes opening into the groove for the retaining ring 20. Before artelino tight elastic element is designed as a cylindrical spring 33, set in the casing 26 coaxially to the cylinder 40 and the rotary shaft 32. The output link of the elastic element is made in the form of a plunger 39, adjustably mounted on the shaft 32 and having the form of a cylindrical sleeve with a flange 24 for focusing the spring 33 and the piston 21. The plunger 39 is placed in the guide sleeve 31 with two axial grooves 34, provided with two radial projections 35, intended for entry into the axial grooves 34 on the guide sleeve 31. Guide sleeve 31 is made removable, equipped with anchor flange with locking grooves 27, which during Assembly are aligned with the tabs 28 on the housing 26. The fastening of the guide sleeve 31 in the housing 26 is made with spring ring 29. In the rotary shaft 32 on its cylindrical surface a radial hole in which is installed a cylindrical dowel 36 and the plunger 39 is provided with two cylindrical grooved Cams in the form of a pass-through window with a screw section 38 and a straight axial section 37 and transverse sections 41 of the working profile, interacting with radial cylindrical stud 36 on the rotary shaft 32. The height of the sections 37 and 38 is equal to the course of the pusher, and the angular length of the transverse section 41 is equal to the rotation shaft between positions closing and opening the shut-off valve. To obtain the minimum axial dimension of the device, the most preference is sustained fashion is the angle of rotation, 90° or less. On the housing 26 in the area of location of a stud 36 is provided through holes 25 for mounting the cleat 36 when the valve Assembly and for removal of possible leakage through the seal 22 and 23 on the piston 21. A stop valve valve head is made in the form of a flat slide valve containing associated with the shaft of the rotary plate 17 and the rotary plate 15, with the bushing grooves. For the message of the axial bore 43 in the rotary shaft 32 with the input pressure opening 46 in the center of the rotary plate 17 of the locking member is formed a through hole 16, and at the end of the shaft, the o-ring 18, the sealing connection of the shaft with the end face of the rotary plate 17. The Central part of the mirror rotary plate is in communication with the input pressure opening 46 by passing through the center of the plate grooves 48, which is connected with its discharge grooves.

When the radial location of the input pressure channel into the threaded socket housing water tap or faucet for the message of the axial bore in the rotary shaft with the input pressure overstep between facing the shaft end surface of the rotary plate and the end of the shaft lumen formed, for example, by a wavy spring plate (PP, 3 formulas).

Figure 3 shows cross-section a-a of the middle portion of the valve head is 2. Figure 4 shows a variant of a valve head for installation in a threaded socket faucet or mixer with the radial location of the input pressure channel 47 and the axial location of the outlet channel 44 (4 formulas).IN this embodiment, the pressure supply to the end of the shaft is carried out by the message input in the axial hole 43 with the inlet 46 with springy wave plate 49 mounted between the rotary plate 17 and the end of the shaft 32, which also serves to preload the rotary plate 17 and the rotary plate 15 between them. Figure 5 shows the main elements of the valve head with the Central location of the inlet 46 (version PP-3 formula).

Does valve head is as follows. In the absence of pressure in the input pressure channel 47 and the pressure chamber 42 by the force of the preliminary compression of the spring 33, the plunger 39 with the piston 21 boylaud in the extreme lower position in which the slot of the Cam on the plunger, acting on the spike 36, fixes the drive shaft 32 in the closed position of the valve (figure 2). When the supply pressure in the pressure channel 47 it is fed to the pressure chamber 42 through the opening 43 in the rotary shaft 32. After reaching a pressure of a magnitude sufficient to overcome the volume control efforts prior compression spring 2, under the force on the piston 21, the pusher 39 shall be expedited in its extreme upper position to the stop projections 35 in the base of the grooves 34 on the guide sleeve 31 and is held in this position during the entire time the pressure in the pressure channel 47. At the same time during movement of the plunger under the action of the piston 21 tenon 36 being in contact only with the axial section 37 of the slot of the Cam remains stationary, and after the release of the pusher 39 is in its extreme upper position the dowel 36 is in the area of the cross section of the slot of the Cam, with a gap with respect to it, which allows free movement of the dowel 36 and the rotary shaft 32 between positions closing and opening the shutoff valve in the usual way by means of an external lever 30 to regulate the flow.

When disconnecting the pressure in the pipeline and the pressure channel 47, followed by the fall of effort on the piston 21, if the shutoff valve is in the open state, and the rotary shaft 32 by this time is in any position between the closed and open position of the shut-off valve, the force of the spring 33, the plunger 39 and the piston 21 will move to the lowest position, while at some point this move, depending on the size of the valve opening, there will be contact of a stud 36 with a screw section 38 p is ofile groove of the Cam under the action of the tangential component of the contact effort on the part of the Cam shaft 32 rotates in the closed position of the shutoff valve, as the plunger 39 will stop when the stop profile Cam groove in the dowel 36. When this axial component of the contact effort on the part of the Cam is perceived resistant ring 20. If the cut-off pressure of the rotary shaft 32 is in position closing the valve, i.e. the spike 36 was in contact with the axial section 37 of the slot of the Cam, and between him and the end of the Cam profile there was a gap the size of a stroke of the pusher, it will only joint axial movement of the plunger 39 and the piston 21 of their extreme upper position to the lowest position, the spike 36, the drive shaft 32 and shut-off valve will remain in place. In the absence of pressure in the pressure channel opening shut-off valve valve head using the handle becomes impossible, because the helical Cam mechanism is not reversible.

Figure 6 shows an example of the most preferred options for performing flow shut-off valve, self-closing in the absence of pressure at its input, designed for single lever water faucet hot and cold water. The valve is made in the form of a replaceable cartridge (cartridge)mounted in a cylindrical socket 57 of the housing 51 of the mixer to the input 85 and the output 82 channels for the passage of water. A cylindrical valve body consists of the base 83 and the cover 75, is fastened between the spring clips 55. In the base 83 is formed by the input pressure of the hole 84 and the outlet 52. Mount the valve in the socket 57 is threaded nuts 63. Surround the servo valve is made in the form of noncircular cylinders 78 formed in the base 83, parallel to its longitudinal axis. Output level volume control motor is made in the form of piston 79 in the form of a flat liner, movably mounted in the cylinder 78 and the pressure chamber 80 volume of the servo motor in communication with the inlet 84 for passage of water. Prestressed elastic elements in the form of torsion spring 67 mounted on printerhelp 66 attached to the cover 75 of the valve body. The output link of each elastic element is made in the form of a rod 74, passed through the wall of the cover 75 of the housing. The rod 74 is attached to the pusher 91 G-shaped and the piston 79 and the pusher is provided with a contact stop 76 for transmission to the rolling movement of the lever 70. Movable arm 70 is made with a ball support 92 installed in the slot 93 of the cover 75 of the housing, equipped with attached perpendicular to its longitudinal axis plate shoulder 77 to communicate with the contact stop 76 on the plunger 91 and the arm 61 with a ball 60 for transmitting control movement of the shut-off valve. Locking the body in the form of Pleskov the spool, containing a movable plate 88, a fixed plate 87 and the support plate 89 with continuous grooves, a mirror which is parallel to the longitudinal axis of the valve body. The movable plate 88 is connected to the planet carrier 56, made in the form of a lever with the lug 58 on its end for engagement with a ball 60. On the drive rod 56 is formed rotary support in the form of a cylindrical dowel 53 and stone 54 included in a longitudinal guide groove 90 on the base plate 89.

Plate shoulder 77 on the lever 70 is made in the form of an angular sector with the opportunity to interact with the contact lugs 76 on the plungers 91 output links both elastic elements and lugs 94 in the cover 75 of the valve body to limit rotation of the movable arm 70 when the temperature of the water at the output of the mixer. To ensure minimum specific contact force between the movable plate 88 and the fixed plate 87 of the locking member and minimal effort when moving a movable plate 88 relative to the pivot plate 89 delivered to the input grooves 95 of the fixed plate 87 is formed an equilibrium chamber 86 floating spring-loaded clamping bushings 81, the diameter of which is chosen from the condition of equality of the squares of the camera holes 86 and the area of the contact surface 97 on the fixed mirror plate. To reduce wear of the ball is on the tip 60 it is placed in a detachable liner 59 with a spherical inner cylindrical outer surfaces. To ensure the tightness of the coupling ball tip with a slot 35, the limitations of the friction torque and compensate for the increase of the gap when the wear of the contact surface of the slot in the pivot lever has a floating spherical thrust bearing 68 with elastic sealing ring 72. To reduce wear of the contact area of the shoulder of the spring 67 with the end of rod 74 on the rod end worn bearing cap 71 with transverse grooves 96, made of durable wear-resistant material with a low coefficient of friction. Prointegration 66 fixed on the cover 75 of the housing using two racks 97 with the slots 69 and the stop 65. The pressing printeries 66 to the end cap 75 is pre-stressing force of the spring 67. When installing the valve in the socket 57 mixer prointegration 66 and a spring 67 is disconnected from the valve body. After installation of the valve body into the slot 57, o-rings, nut 63 and installation of decorative cap 62 prointegration 66 in Assembly with the spring 67 is attached again. The internal cavity of the lever arm 64 is performed under condition of providing its unimpeded movement relative to printeries 66. 7 shows a top view of the valve 6 is removed from the lever arm 64. On Fig shows a cross-section a-a and section b-b of the valve 6. Figure 9 in more detail pok what are some of the elements of the valve 6.

Works shutoff valve as follows. In the absence of pressure in the input pressure of the openings 84 in the pressure chambers of both cylinders 80 78 by the force of the preliminary deformation of the spring 67, the rod 74 with the piston 79 and the plungers 91 boylaud in the extreme lower position defined by the stop abutment cap 71 in the end cap 75. When the plunger 91, pressing contact with the stop 76 on the plate, the shoulder 77 of the lever 70, records through shoulder 61 with ball tip 60 of the sliding plate 89 of the shut-off valve is in the closed position (figure 2). When manually lifting the lever arm 64 and overcoming the efforts of both springs 67 shutoff valve can be opened, but when you release the handle it will close again.

When applying pressure to one of the input pressure of the holes 84 and into one of the pressure chambers 80 after reaching a pressure of a magnitude sufficient to overcome the efforts of the preliminary deformation of the spring 67, under the force on the piston rod 79 74 through the plunger 91 shall be expedited in its extreme upper position to lock the piston 79 to the ledge on the walls of the cover 75. When this pin stop 76 is detached from the plate shoulder 77, which remains in the lower position under pressure of the spring and plunger adjacent the elastic element and the cylinder, the pressure in the pressure chamber 80. The lever 70 when ostaetsya closed position. And in this case, when the manual lifting of the lever arm 64 and overcoming the force of the spring 67 adjacent the elastic element isolation valve can be opened, however, when the release lever under the action of the spring 67 he also closes again. Only when there is pressure in both inlets 84 and in both pressure chambers 80 both rod 74 will be in the upper position, and the lever 70 will have the opportunity to move freely between positions closing and opening the shut-off valve with lever 64 to regulate the flow and water temperature at the outlet of the mixer.

When disconnecting the pressure in one of the discharge holes 84, followed by a drop efforts on the corresponding piston 79, if the shutoff valve is in the open state, and the lever arm 64 by this time was in any position between the closed and open position of the shut-off valve, the force of the spring 67, the rod 74 with the piston 79 will be moved to the lower position, at some point this move, depending on the size of the valve opening, there will be contact plate shoulder 77 contact with the stop 76 on the plunger, after which the lever 70 to the lever arm 64 will be transferred in the closed position of the valve. When disconnecting the pressure in both pressure holes 84 described about the ECC will happen with both pushers. If at the moment of disconnection of the pressure lever arm 64 is in position closing the valve, i.e. between the stop 76 and the plate shoulder 77 was a gap the size of a stroke 74, it will only joint axial movement of the rod 74 and piston 79 of their extreme upper position to the lowest position to lock the cap 71 in the cover 75, while the lever arm 64 and shut-off valve will remain in place. Thus, if the working pressure in the distribution network, i.e. under normal operating conditions, the proposed entrance off valve works as a common known single lever cartridge. Its flow characteristics, mounting and overall dimensions of the proposed design of the cartridge can be performed in full compliance with the existing well-known standardized designs cartridges without function samsamrace, i.e. it can be used interchangeably with them.

Example variant flow shut-off valve in the form of a single lever mixer tap hot and cold water shut-off body in the form of a removable cartridge and a drive link mechanism control valve in the form of a movable arm (PP-9 formulas) is shown figure 11. The housing 101 water faucet contains the input pressure channels 121, output channel 122, the slot under single card is ij 119 and Rastogi 104 for installation of volume control motor, the elastic element and its output link. Surround servo motor made in the form of a circular cylinder 109 placed in the bore 104 of the housing 101 of the mixer. Output level volume control motor is made in the form of the piston 116 in the form of a stamped metal cap with guide flanges are made of plastic 110 and o-ring of elastic material, movably mounted in the cylinder 109. The housing 101 of the valve are made with channel 124 for connecting the pressure chamber volume 111 of the servo motor to the input pressure opening 121. Prestressed elastic element is designed as a cylindrical spring 108, the output link of the elastic element is designed as a Central shaft 113 mounted vertically in covering it from the outside and connected to the cylinder guide sleeve 120 with a slot for the stop of the spring 108. The rod 113 from the upper end connected to the flange 112 to lock the spring 108, and from the side bonded with the lower plate 102 to interact with the plunger 115 and the lever 118 by contact of the stop 114 on the lever arm 117. The piston 116 supported on the upper end of the rod 113.

The cylinder 109, the piston 116, the spring 108, the rod 113 with the flange 112 and the plate 102 is designed as a removable drive unit 107, the body of which is formed by a cylinder liner 109, which is connected with the guide sleeve 120. In the housing 101 will sosite what I hot and cold water placed two such drive unit 107, Plenum volume 111 of the servo motors of each of the blocks 107 are connected through drilling 124 with the input pressure holes 121, one for cold water and one for hot. Mount removable drive units 107 in the bores 104 of the housing 101 of the valve is performed by using the spacer sleeve 105 and camshaft ring 103, and sealed by an elastic sealing ring 106. The plunger 115 is parallel to the rod 113 with the possibility of unilateral interactions plates 102 of the rod 113 both units 107 and the contact stop 114 on the lever arm 117 is made in the form of an angular sector 123 for interoperability with the pusher 115 when rotated the handle 117. On Fig shows a longitudinal section of a removable drive unit 107, made in the form of precast uniform node.

Operates the valve as follows (11). In the absence of pressure in the input pressure of the openings 121 and in the pressure chambers 111 both units 107 force pre-compression springs 108 on the rods pistons 113 116 together with the plates 102 and pusher 115 boylaud in its extreme upper position in which the plunger 115, by clicking on the contact stop 114, locks lever arm 117 in the closed position of the valve. When manually lifting the lever arm 117 and overcoming the efforts of the springs 108 both units 107 shutoff valve QCD is ivalsa, however, when you release the handle it will close again under the action of springs 108 both units 107.

When applying pressure to one of the input pressure of the holes 121 and the pressure chamber 111 after reaching a pressure of a magnitude sufficient to overcome the efforts of the pre-compression of the spring 108, under the force on the piston rod 116 113 and the plate 102 boylaud in its extreme lower position to the stop flanges of the piston 116 in the ledge liner cylinder 109. When plate 102 is detached from the plunger 115, which remains in the upper position under pressure of the spring 108 and the plate 102 adjacent block 107, the pressure in the pressure cavity 111. Lever arm 117 remains in the closed position. And in this case, when manually lifting the lever arm 117 and overcoming the efforts of one of the spring 108 of the neighboring block 107 shutoff valve opens, however when you release the handle it also closes again under the action of the spring 108 of the block. Only when the supply pressure at both the inlet 121 both rod 113 and the plunger 115 will be in the lower position, and a lever arm 117 will receive a seamless handoff between the provisions of closure and full opening of the shutoff valve in the usual way. When disconnecting the pressure in one of the discharge holes 121, followed by a drop efforts to appropriate arsne 116, if the shutoff valve is in the open state, and a lever arm 117 by this time was in any position between the closed and open position of the shut-off valve, the force of the spring 108, the rod 113, the piston 116 and the plunger 115 will be moved to the upper position, while at some point this move, depending on the size of the valve opening, there will be contact of the pusher 115 contact with the stop 114 on the lever arm 117, whereupon the arm will be moved to the closed position of the valve. When disconnecting the pressure in both pressure holes 121 described the process will occur in both blocks 107.

If at the moment of disconnection of the pressure lever arm 117 were in the closed position of the valve, i.e. between the pusher plates 115 and 102 there was a gap the size of a stroke of the pusher 115, it will only joint axial movement of the rod 113, plates 102 and piston 116 both units 107 from their extreme lower position to the upper position to the choice of the gap between the plate 102 and the plunger 115, with lever arm 117 and shut-off valve will remain in place.

To ensure convenient use of the mixer in the case of long deliberate termination of the water supply to one of the input pressure channel mixer 121 is supplied installed in the building is CE 101 mixer input channels 121 non-return valves (figure 11 are not shown), and channels 121 communicated with each other using the additional holes 125 and built-in mixer flow shut-off valve 126 manual (paragraph 10 of the formula). In the absence of pressure in one of the input pressure channels 121 and when the flow valve 126 is provided by the intake pressure in its pressure chamber 111 of the adjacent discharge channel, resulting in both unit 107 will operate synchronously and the mixer will not be closed when you release the lever 117.

Described passing the shut-off valve can be used as an alternative involving the use of common and known for its high consumer properties of the unified single lever cartridges and removable drive units made in accordance with clause 8 of the formulas that can be produced in the form of standardized cartridges.

1. Pass shut-off valve, self-closing in the absence of pressure at its input, comprising a housing with an inlet pressure and outlet openings for passage of the working medium, which has a stop valve, a driving link of the locking member associated with the handle for operating the valve, and a one-way volume control motor, a pressure chamber which is in communication with the inlet, wherein the supplied fitted is authorized in the case of pre-strained elastic element, movable output element which is made with the possibility of unilateral effects on driving link of the locking member and moving the force of the elastic element from any position in the closed position of the locking body, with one-way volume control motor made with the possibility of interaction of its output link output link of the elastic element, overcoming the efforts of the elastic element pressure in the pressure chamber and movement of the output link of the elastic element in the position in which terminated its engagement with a drive element of the locking member and there shall be free movement of the drive link of the locking member between positions closing and opening through the handle for operating the valve, holding output link the elastic element in the above-mentioned position by the pressure in the pressure chamber, and in the absence of pressure - displacement output level volume control motor and the drive link of the locking member in the closed position of the locking member by the force of the elastic element.

2. Pass shut-off valve according to claim 1, characterized in that it is designed as a removable valve head mounted in a threaded socket housing water tap or faucet hot and cold water input pressure and agodnym channels, contains the drive link of the locking member in the form of a rotary shaft, with one-way volume control motor is made in the form of a circular cylinder formed in the housing coaxially with the shaft, and the output level volume control motor is made in the form of a piston in the form of a flat annular disc movably mounted in the cylinder and the shaft, the rotary shaft from its end facing the shut-off body is made of the axial hole, coupled with the pressure chamber volume of the servo motor for supplying a pressure input from the pressure hole, prestressed elastic element is designed as a cylindrical spring mounted in the housing coaxially with the cylinder and the rotary shaft, the output link of the elastic element is made in the form of a plunger, slidably mounted on the shaft and having the form of a cylindrical sleeve with a flange for support of the spring, the plunger is placed in covering it from the outside and connected to the housing of the guide sleeve made of at least one axial groove, and provided with at least one radial protrusion intended to enter into an axial groove on the guide sleeve, a rotary shaft on its cylindrical surface, at least one radial hole, which has at least one radial cylindrical tenon, t is lcatel provided, at least one cylindrical groove Cam in the form of a pass-through window in the sleeve pusher screw and linear axial sections of the working profile, interacting with radial cylindrical tenon on the rotary shaft, the height of the slot of the Cam is equal to the course of the pusher, and the angular extent of the rotation shaft between positions closing and opening the stop valve, shut-off valve is made in the form of a flat slide valve, with the associated rotatable with the shaft and mounted in the housing rotary plate with bushing grooves.

3. Pass shut-off valve according to claim 2, characterized in that the Central location of the input pressure channel into the threaded socket housing water tap or faucet for the message of the axial bore in the rotary shaft with the input pressure hole in the center of the rotary plate valve body is formed a through hole, the end portion of the shaft is made with a tight fit to the Central part facing the shaft end surface of the rotary plate, the Central part of the mirror rotary plate is in communication with the input pressure opening, for example by passing through a center of the plate grooves, connected with its discharge groove.

4. Pass shut-off valve according to claim 2, characterized in that when for the sake of the flax the location of the input pressure channel into the threaded socket housing water tap or faucet for the message of the axial bore in the rotary shaft with the input pressure opening between facing shaft end the surface of the rotary plate and the end of the shaft lumen formed through, for example, a wavy spring plate.

5. Pass shut-off valve according to claim 1, characterized in that it is made in the form of a removable cartridge that is installed in the socket housing lever faucet or faucet hot and cold water input pressure and output channels containing the driving link of the locking member in the form of a movable arm, with one-way volume control motor is made in the form of non-circular cylinder, the axis of which is parallel to the longitudinal axis of the valve body, the output level volume control motor is made in the form of a piston in the form of a flat liner, movably mounted in the cylinder, and the pressure chamber volume of the servo motor in communication with the inlet for passage of water, prestressed elastic element made in the form of torsion springs installed on is connected to the valve body printerhelp, the output link of the elastic element is designed as passing through the wall of the housing of the rod attached to the plunger G-shaped and the piston, and a plunger provided with a contact point for the transmission of motion to the rolling lever arm is made with a ball bearing and equipped with attached perpendicular to its longitudinal axis plate shoulder for cooperation is deystviya contact with emphasis on the plunger and the shoulder with a ball for transmitting control movement of the locking body, locking the body in the form of a flat slide valve containing the mobile, fixed and base plate with through grooves, the mirror which is parallel to the longitudinal axis of the valve body, the movable plate is connected to the planet carrier, made in the form of a lever with an eye on its end for engagement with a ball, and drove formed rotary support, for example in the form of a cylindrical thorn and stone, designed for entry into the longitudinal guide groove on the base plate.

6. Pass shut-off valve according to claim 5, characterized in that when it is intended for installation in a mixer of hot and cold water, it is made of accommodation in the case of two such elastic elements and two volumetric motors, connect the pressure chambers of each of the servo motors to the input holes, one for cold water, one for hot, this arm is made rocking and swivel relative to the housing and the plate, the shoulder on the lever is made in the form of an angular sector with the opportunity to interact with the contact lugs on the pushers output links both elastic elements and with stops to limit rotation of the lever when the temperature of the water at the mixer output.

7. Pass shut-off valve according to claim 1, characterized in that it is made in the form of amnerican the th water tap or faucet hot and cold water, containing a stop valve in the form of a removable cartridge with a drive element of the locking member in the form of a movable arm mounted on the lever cartridge, with one-way volume control motor is made in the form of a circular cylinder that is installed in the valve body or mixer, the output level volume control motor is made in the form of a piston in the form of a flat disk movably mounted in the cylinder, the valve body is made with a channel for connecting the pressure chamber volume of the servo motor to the input pressure opening, prestressed elastic element is designed as a cylindrical spring, the output link of the elastic element is made in the form of a Central rod, movably mounted in covering its outside and connected with the housing, the guide sleeve with the slot of the stop spring, a rod connected to one side with a flange for support of the spring and piston, and on the other with a plate for cooperation with a movable arm by means of the pusher and contact the emphasis made on the handle.

8. Pass shut-off valve according to claim 7, characterized in that the cylinder, piston, spring, piston rod flange and the plate is designed as a removable drive unit, the body of which is formed by the cylinder liner, which is connected with the guide sleeve.

9. Pass shut-off valve according to any one of claim 7 or 8, distinguish the different topics that when executed in the form of a mixer of hot and cold water, the body is made from the condition of two of such elastic elements and two volumetric motors, connect the pressure chambers of each of the servo motors to the inlet, one outlet for cold water, one for hot, and the pusher is mounted for engagement with the plates of both rods surround motors, and the contact stress on the movable handle is in the form of angular sectors.

10. Pass shut-off valve according to any one of pp.5-9, characterized in that in order to ensure convenient use of the mixer in the case of long deliberate termination of the water supply to one of the input pressure channels, the mixer is supplied installed on the entry into the channels of the check valves, and channels in the mixer communicated with each other via integrated into the housing of the mixer pass shut-off valve with manual switching.



 

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FIELD: mechanical engineering; liquid materials handling facilities.

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Drain valve // 2248487

FIELD: mechanical engineering; liquid materials handling facilities.

SUBSTANCE: proposed drain valve has seat secured in reservoir bottom and cup with lid provided with central hole. Overflow unit and shutoff member lifting mechanism are provided. Cup is secured on seat. Overflow unit is made in form of two coaxially arranged inner and outer tubes. Inner tube is installed for axial displacement and fixing relative to outer tube. Float is secured on outer tube from side of its outer surface. Shutoff member is installed on lower end of outer tube. Outer tube is installed for axial displacement and is passed through central hole in cup lid. Float is arranged inside cup. Shutoff member lifting mechanism is made in form of hinge unit connected by tie-rod with overflow unit and mechanically coupled with pushbutton. Pushbutton is installed in reservoir cover by means of thrust bushing. Cup is secured on seat by bayonet joint. Two seats are made on cup lid. Post is secured in each seat. Adjusting bushing is secured on posts. Said bushing is connected by threaded joint with thrust bushing of pushbutton. Rim is secured on adjusting bushing. Hinge support is made on rim. Position of inner tube of overflow unit is fixed relative to outer tube of overflow unit by means of union nut and sealing gasket. Said gasket is clamped by union nut between tube of overflow unit. Hinge unit is made in form of lever. Rotary axle is installed in middle part of lever in hinge support. One end of lever thrust against base of rod. Rod is connected with pushbutton spring-loaded relative to thrust bushing. Other end of lever is connected with upper end of tie-rod. Said tie-rod is connected with -shaped lever from side of its lower end. Said lever is rigidly secured on bracket. The latter is made on outer tube of overflow unit higher than cup.

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Drain valve // 2248488

FIELD: mechanical engineering; liquid materials handling facilities.

SUBSTANCE: proposed drain valve is design for organization of draining liquids of different type from containers. Proposed drain valve has seat secured in bottom of reservoir, cup installed on seat and overflow unit. The latter contains axially movable tube. Float arranged in cup is secured on outer surface of tube. Shutoff member is mounted on lower end of tube. Overflow unit is passed for axial displacement through cup. Overflow unit is mechanically coupled with rod of shutoff member lift handle. Cup is secured on seat by means of bayonet joint. Overflow unit is furnished additionally with inner tube. The latter is partially arranged inside overflow unit tube. Inner tube is installed for axial displacement and subsequent fixing in position relative to overflow unit tube by means of union nut and sealing gasket. The latter is clamed between tubes of overflow unit by union nut. Two diametrically opposite brackets are made on overflow unit tube from side of its upper end. Tie-rod is secured in each bracket from side of lower end. Upper end of tie-rods is secured in clamp. Longitudinal cut is made on free end of rod forming, at least, two cantilever flexible lobes. Each lobe is made in form of upward widening stop from outer side. Clamp is fitted on rod through stops on flexible lobes with possibility of action onto clap when shutoff member of drain valve is lifted by its handle.

EFFECT: improved reliability of drain valve owing to simplified design and overflow unit tube made symmetrical and adjustable in height suspension of overflow unit and possibility of its mounting in reservoirs differing n height.

1 dwg

FIELD: valving.

SUBSTANCE: straightway stop valve comprises housing with inlet pressure port and outlet port for flowing fluid. The housing receives closure member, driving link of the closure member connected with the handle for valve control, and single-acting positive-displacement servomotor. The pressure chamber of the servomotor is in communication with the inlet port. The straightway stop valve is provided with the preliminary loaded flexible member mounted inside the housing. The movable outlet link of the flexible member is made for permitting single action on the driving link of the closure member and its movement under the action of the flexible member from its any position to the closure position of the closure member. The single-acting positive-displacement servomotor is made so that, under the action of pressure, the pressure chamber provides the action of its output link on the output link of the flexible member directed oppositely to the direction of flexible force of the flexible member and movement of the output link in the position in which it does not act on the driving link of the closure member and driving link can freely move under the external control action between the closure position and open position of the closure member. Under the action of pressure in the pressure chamber, the output link of the flexible member is held in the mentioned above position. When there is no pressure, the output link of the positive-displacement servomotor together with the driving link returns under the action of the flexible member to the closure position of the closure member.

EFFECT: enhanced reliability.

FIELD: valving.

SUBSTANCE: valve comprises seat, overflow unit, and mechanism for lifting the closure member. The seat is secured to the bottom of the tank. The overflow unit is made of a pipe provided with a float. The closure member is mounted at the bottom end of the pipe of the overflow unit. The pipe of the overflow unit is mounted for permitting axial movement by means of the mechanism for lifting the closure member. The closure member is made of pivoting unit, connected with the overflow unit, and kinematically connected with the push-buttons of the large and small drains. The push-buttons are set in the stop bushing mounted in the tank.

EFFECT: enhanced reliability.

3 dwg

FIELD: mechanics.

SUBSTANCE: double-wash-off valve comprises seat, spillover assembly and shut-off element-lifting mechanism. The seat is fixed at flush tank bottom and incorporates cylindrical shell. The shell bottom is furnished with openings, their upper part communicating with rectangular slots made in the shell wall. The shell accommodates cover enveloping, with a gap, outer pipe and representing barrel. The aforesaid gap makes 0.06 to 0.012 of cover hole diameter. X-bar passes through the inner pipe. The bar lower part rests upon the ledges made inside the aforesaid seat and on the flush hole cylindrical surface. There are hooks on one of the bar walls. The bar is coupled with an extension arm furnished with rectangular holes for the arm to be fitted on aforesaid hooks. Two upper hooks have flanges for the extension arm to be fixed relative to the X-bar. The extension arm upper part has a support bracket with two cylindrical pins mounted one above the other. The aforesaid lifting mechanism represents parallel active and passive levers fitted onto said pins. The active lever represents rocker, its one end being articulated with a radial bracket arranged on the cap nut jointing the spillover assembly pipes. The rocker other end and the passive lever end are articulated with the vertical pushrod, its upper end being sharpened. The major wash-off push button is spring-loaded towards the thrust sleeve with the help of C-like spring and connected with the hollow foot receiving the screw furnished with thrust disk on its lower end. The said disk features corrugated lower surface and circular collar arranged along the disk edges on the corrugated side. The disk rests upon the vertical pushrod sharpened end in its top position before flushing liquid from the flush tank. There are ledges limiting the travel of the major wash-off push button arranged on the lower part of the thrust sleeve. The foot inner surface has radial flexible ribs resting upon the screw screwed into the foot to lock the screw relative to the foot.

EFFECT: higher reliability.

4 cl, 7 dwg

FIELD: machine building.

SUBSTANCE: stop water-supply valve comprises body, which contains the following components that are coaxially installed and tightly pressed one into another - threaded insert, couplings of various diametre and valve tube. The latter comprises a through hole with valve stem and thrust tube installed in it with the possibility of axial displacement. Thrust tube is spring-loaded with standpipe stem on one side and is fixed by a thrust ring at the other side. Valve stem is made in the form of hollow tube with plug at the end, is limited with a collar and connected to disk by means of thrust. Disk is a stop-relief valve of hydraulic chamber. This chamber is formed by coupling of smaller diametre, threaded insert and coupling of larger diametre. One or several openings are located in lower part of valve stem and thrust tube above collar. Centre of thrust tube openings is coaxially installed above centre of openings of valve stem.

EFFECT: protection against valve freezing at low temperatures.

4 cl, 3 dwg

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