Valve

FIELD: machine building.

SUBSTANCE: valve for use in combination with painting device, which includes valve body (12), valve spindle (32), which at first free end (36) outside valve body (12) holds sealing element (40) and installed with possibility to displace between closing and opening positions inside valve body (12). Valve spindle (32) includes at least first piston element (44) and second piston element (54), first piston element (44) is directed in first piston chamber (20), and second piston element (54) is directed in second piston chamber (22), which are limited by valve body (12). First piston chamber (20) and second piston chamber (22) are made with possibility to supply pressure fluid medium, respectively, so, that to first piston element (44) and to second piston element (54) force is applied acting in same direction.

EFFECT: first and second piston chambers (20, 22) via radial channels (82, 84) are connected to valve body (12) perimeter groove (80) located from outside.

9 cl, 2 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely to valve manufacturing, namely to spring loaded hydraulic or pneumatic drives, and can be used to control the pipeline valves, operated in various purpose pipelines. The target is ensured by the fact that drive for the pipeline valves contains secured on bonnet the support plate with installed drive interacting with the spring drive, its stock is coaxially linked with spindle controlling the gate of the pipeline valve, at that spring and pneumatic drives are installed horizontally in series, and are connected with each other by system of double arm gears enclosing the specified drives, and hinges controlling the spring drive are installed between the fixed hinges secured on the support plate, and hinges connecting the control levers and tie-rods, in bottom part connected with each other by beam kinematically connected with stock of the pneumatic(hydraulic) drive.

EFFECT: invention target is creation of the pneumatic (hydraulic) drive with possibility of its use for normally opened pipeline valves, gates (wedge, shutter), butterfly gates, including for high values of NB, Pset.

3 dwg

FIELD: machine building.

SUBSTANCE: pre-adjusted valving with one mechanical part located in the valve body for multistage switching of compressed air flow between a supply pressure connection element and a working pipeline connection element. By means of a throttling device in one switching step the throttling compressed air flow can be switched. The pre-adjustment pneumatic device contains the first control piston, which is located in the first control chamber, designed in the valve body, and which contains a concentric recess for formation of the second control chamber, which contains the second control piston. Meanwhile the additional supply of control pressure into control chambers results in telescopic advancement of a pusher out of the second control piston for initiation of multistage control stroke for the mechanical part of the valve, so that in one stage of switching of mechanical part of the valve (located between closed and open positions of the valve) to form a throttling compressed airflow.

EFFECT: invention is aimed at compactness and simplification of the valving design.

10 cl, 1 dwg, 1 tbl

FIELD: engines and pumps.

SUBSTANCE: gases in the cylinder of the internal combustion engine (ICE) press on a pump piston end face, and liquid enters the hydraulic accumulator, after that the spring returns it in a starting position and through the check valve liquid from the compensation tank is forced out there. For opening of the ICE valve the control system sets a valve spool in the position at which liquid from the hydraulic accumulator goes to the top cavity of the drive piston of the gas-distributing valve and the gas-distributing valve opens. The exhausted liquid from the lower cavity is forced out into the compensation tank. For closing of the gas-distributing valve the control system follows the inverse sequence. For fuel supply the control system sets the nozzle spool into the position at which liquid of the accumulator goes into the top cavity of the drive piston of the nozzle plunger, and the nozzle plunger injects fuel into the combustion chamber. And at the return movement the nozzle plunger sucks fuel from the fuel tank.

EFFECT: improvement of efficiency of internal combustion engine due to regulation of its gas distribution valves and nozzles by the common hydraulic system.

1 dwg

FIELD: machine building.

SUBSTANCE: displacement device to be used with actuators is described. The displacement device to be used with a piston actuator comprises the first bush which, at least partially, is enclosed by the second bush and connected to the second bush in a movable way. The displacement device is additionally equipped by a stop to limit the value of displacement of the first bush in respect to the second bush, and the displacement element is set between the first and the second ends of respectively the first and the second bushes to press the first bush from the second bush. The displacement element is completely placed inside the chamber provided by the first bush and the second bush.

EFFECT: improved design.

17 cl, 12 dwg

FIELD: machine building.

SUBSTANCE: invention relates to pipeline valves and is intended for use in various industrial application for shutting of medium pumped through pipelines. The essence of the invention is that the shutoff and throttling device contains the case with output and input branch pipes located opposite to each other, rotary shutoff element - flat shutter, located between branch pipes, and a tailpiece, installed on the rotation axis; it is also fitted with two mutually independent pneumodrives (opening and closing); on the gate tailpiece the profiled surfaces are provisioned which contact the stems of pneumodrives, and the pneumodrives are cooled by flowing medium.

EFFECT: such design of the shutoff and throttling device will allow to ensure its serviceability at high temperatures.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: gases in the cylinder move the compressor piston that pumps the atmosphere air via the check valve to the common pneumatic accumulator for all cylinders. During suction cycle in the cylinder the compressor spring moves its piston to the initial position, and atmosphere air via the check valve is pumped in the compressor cavity. To open valve of the internal-combustion engine the control system sets its slide in the position where air from the common pneumatic accumulator enters the valve drive cavity and opens the valve. Closing is performed in the reverse order. For the fuel supply to the combustion chamber the control system sets the slide of air flow control to the position where air from the common pneumatic accumulator enters the cavity of the sprayer plunger drive. The drive of the sprayer piston moves the plunger and ensures injection. The sprayer plunger preparation for next injection is performed in reverse order, as result fuel from the tank via the check valve is supplied to the cavity of the sprayer plunger.

EFFECT: improved efficiency of operation of the internal-combustion engine due to gas distribution adjustment.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: at compression stroke in first cylinder, air or fuel mix press against compressor drive piston end surface to drive compressor piston so that working fluid is displaced via check valve into hydraulic accumulator. At a time, fluid from compensation tank is fed via check valve into opposite chamber. After first cylinder piston reached TDC in second cylinder at compression step or at fuel combustion step and expansion of combustion products, air, mix or combustion products press against second cylinder compressor drive piston end surface. This makes compressor drive piston displace the compressor piston engaged therewith to feed working fluid from opposite chamber via check valve into hydraulic accumulator. Thereafter, this cycle reiterates.

EFFECT: unified drive for control over valve body and fuel atomiser.

2 dwg

FIELD: machine building.

SUBSTANCE: hydraulic drive of stop valves comprises a casing with channels for the supply of working medium, a spring-loaded stem able of axial displacement and installed inside the said casing. One stem end is able of providing for mechanical interaction with the stop valve operating member, mainly with the gate of a gate valve, and a hydraulic cylinder able of axial displacement together with the stem is mounted at the other stem end. Inside the said hydraulic cylinder there installed is a fixed piston attached by one end to the hydraulic drive casing and made as a profiled cylinder, mainly a hollow one. The channels for the supply of operating medium are connected to the end clearance between the said movable hydraulic cylinder and the fixed piston.

EFFECT: improved operational characteristics.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: pneumatic drive comprises compressor piston, compressor piston spring, intake and discharge valves and pneumatic accumulator. Fluid compressed in ICE cylinder thrusts against compressor piston end face surface. This makes compressor piston displace to compress atmospheric air in piston opposite end face to be fed via discharge check valve into pneumatic accumulator. At piston suction cycle end, spring arranged at compressor piston opposite end face cavity displaces the piston towards engine cylinder. Atmospheric air is sucked via intake check valve into compressor piston opposite end face cavity. Thereafter, pneumatic accumulator charging cycle is terminated to make compressor piston ready for another charging cycle.

EFFECT: unified ICE drives.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: working fluid thrusts against compressor drive piston end face surface at compression stroke. Compressor drive piston starts displacements coupled with compressor piston to displace fluid via check valve into hydraulic accumulator. With compressor piston at suction cycle dead centre when ICE cylinder decreases, piston spring displaces it along with compressor drive piston to initial position of the next charging cycle. Note here that fluid is fed from compensation tank via check valve into compressor piston chamber. Further, charging of pneumatic accumulator can occur at ICE working cycles.

EFFECT: unified ICE drives.

2 dwg

FIELD: pipe line fittings; pneumatically-driven valves mounted on tank trucks.

SUBSTANCE: proposed valve has base connected to lower portion of tank and provided with through holes for passage of medium. Piston is connected with base through rod and movable shut-off member pressed by spring embraces the piston. Cavity formed between piston and shut-off member is brought into communication with compressed air source used as control medium. Manual duplicating drive includes drive shaft connected with shut-off member by means of wire and mounted in radial hole of base 1 for turning relative to its axis and winding the wire running through hole in plate used as support.

EFFECT: simplified construction of valve.

4 cl, 2 dwg

Control valve // 2282772

FIELD: valving.

SUBSTANCE: control valve comprises housing provided with inlet and outlet passages and receives two valving gates connected with the rod having movable drive. The first valving gate is made of a rod with step piston having openings and sealing surface. The second valving gate is made of bushing-plunger that embraces the piston and is provided with sealing surface for permitting its axial movement and locking at the end positions. The second valving gate is mounted coaxially in the seat provided with the sealing surface and sealing member. The sealing member is tubular and provided with openings made downstream of the sealing member and sealing surface. The inner diameter of the tubular part of the seat downstream of the sealing surface is mating to the outer diameter of the second valving gate, which is mounted for permitting axial movement along the tubular part of the seat from the sealing surface by means of step piston. At the end position, the sealing surface of the step piston of the rod cooperates with the sealing member. The sealing surface of the step bushing-plunger cooperates with the sealing surface of the seat. The rod is provided with piston to define the under-piston space connected with the atmosphere and above-piston space connected with the inlet passage through a passage.

EFFECT: enhanced reliability.

1 dwg

Ball cock // 2285852

FIELD: valving.

SUBSTANCE: ball cock comprises housing that has inlet and outlet passages and receives valving member made of tubular piston mounted in the housing for permitting movement under the action of external pressure, sealing unit movably mounted with respect to the tubular piston, and passage that connects the butt between the sealing unit and tubular piston with the atmosphere. The valving member is mounted on two axles that are axially aligned and rigidly interconnected. One of the axles is connected with the driving mechanism through the pinion. The driving mechanism is made of rod that is set inside the housing out of the zone of the through passage and two bushings movably mounted on the rod. The bottom bushing-rack is mounted for permitting cooperation with the pinion. The top bushing-piston is mounted for permitting cooperation with the piston that is mounted above the top arrester of the bushing-rack and defines the hydraulic space together with the arrester. The space is filled with oil. The central section of the rod is provided with ring projection, and the openings in the bushings are step. The inlet and outlet passages are connected with the space above the top bushing-piston through the check valves.

EFFECT: enhanced reliability.

3 dwg

FIELD: instrument making.

SUBSTANCE: group of invention is related to combined devices for unloading and protection against hydraulic shock and is intended for pressure-loaded reservoirs with working fluid in systems of working fluid supply to hydrodynamic machines. Combined device (4) for unloading and protection against hydraulic shock comprises body (18), unloading valve (52), comprising inlet chamber (54) communicated with internal space (12) of reservoir (3) with working fluid, outlet chamber (55) communicated with its unloading space (13), valve body (56) installed with the possibility of displacement in body (18), valve seat (57) fixed in body (18), actuator (58) joined with valve body (56). Seat (57) is installed so that when interacting with body (56), it covers joint between inlet (54) and outlet (55) chambers. Device (53) for protection against hydraulic shock includes shock-resistant plate (37). Plate (37) is installed with the possibility of displacement outside body (18) on guide element fixed with body (56) of unloading valve (52). Guide element has thrust (41) on its end area inverted from body (56) for displacement of plate (37). Seat (42) is installed at the body (18). Seat (42), interacting with plate (37), locks inlet chamber (54). At least one throttling place (62) is installed between plate (37) and guide element. There is a system (2) for working fluid supply to hydrodynamic machines (1), including above mentioned combined device (4).

EFFECT: group of inventions is aimed at creation of more stable conditions in reservoir with working fluid in case of hydrodynamic machine emptying.

12 cl, 2 dwg

Valve // 2398151

FIELD: machine building.

SUBSTANCE: valve actuating hydro-cylinder (10) contains at least one slide. The slide shuts off flow channel inside the valve. Flow channel (48, 50) does not run through slide (40) of the valve. The valve contains a connection (R) of a reverse line continuously connected with slide (40) of the valve. Slide (40) of the valve on both sides is coupled with the connection of the reverse line. There is also disclosed procedure of installation section of a powered roof support by means of the said valve.

EFFECT: increased reliability of commutation with reduction of forces effecting valve seat.

14 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: locking-fixing device of turning gear consists of holder and spring, of piston pneumatic cylinder, outlet end of rod of which is connected to turning gear. In the rod of the pneumatic cylinder there is made an axial orifice wherein there are installed a spring and a holder with a piston. The holder has an axial orifice and a radial orifice connected to it for admission of compressed air. At the end part of the rod there is installed an eye with a through axial orifice and radial orifice coaxial to the holder and facilitating interaction of the eye with the holder. The rotating eye is installed in a support. An axle is arranged in the through axial orifice of the eye. The axle is stationary connected with the support and has an axial orifice wherein there is installed a connecting pipe for admission of compressed air. The rotating eye also has the radial orifice connected with the axial orifice and coaxial to the holder and a guiding groove facilitating interaction of the axle and the holder. Additionally, the eye is connected to the turning gear by means of a lever and a pressure plate.

EFFECT: expanded functionality of device.

2 dwg

FIELD: machine building.

SUBSTANCE: valve switching device contains hollow case whereto there are connected two lines of low pressure by means of branches and safety valves. Gas medium lines are connected to branches. A high pressure line is connected to a cavity of the case. A valve supplying pressure to one of safety valves and shutting off the second safety valve is installed in the cavity of the case on a movable rod. Cases of two pistons are arranged on end sides of the hollow case. One of the cases is split. The valve and both pistons are secured on a common rod passing through the hollow case and both cases of the pistons. A replaceable circular insertion is set in the split case of the piston. The piston in a chamber with the insertion is also split. Lines of control pressure are connected to each piston case on both sides of the piston. There are disclosed versions of design of valve switching device.

EFFECT: increased reliability of devices operation.

11 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: device consists of case forming chamber. A sliding rod dividing the chamber into the first and the second part is installed in the chamber. Each part of the chamber has a channel for supply of control fluid medium. The first part of the chamber has an orifice closed with a closing element secured in the case with fasteners containing: the first in essence circular groove made in a wall surrounding the orifice, the second in essence circular groove made in the closing element, a filament-like element forming a blocking element for the closing element and positioned between two in essence circular grooves.

EFFECT: increased reliability of device.

21 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: pneumatic drive with a braking device comprises a cylinder, a braking chamber, a piston with a single-sided stem, a controlled throttle, and also a ledge, an inlet hole connecting a piston cavity with a source of gas, and an outlet hole connecting the stem cavity with atmosphere. The ledge is made as covering the stem and is installed on the cover at the side of the stem, besides, the inner diameter of the ledge is equal to the stem diameter, at the same time the ledge end is arranged at the distance equal to the stem travel χst., in the stem on its axis there is a dead hole, the outlet of which at the side of the end opposite to the piston is connected to atmosphere, and at the distance ℓ from the piston end facing the stem there is an inlet through hole, which is perpendicular to the axis of the dead hole, at the same time a pneumatic distributor installed at the inlet to the piston cavity is made in the form of an injection nozzle connected directly to a throttle of permanent cross section, and at the outlet of the stem cavity there is a controlled throttle installed on the outlet hole.

EFFECT: invention makes it possible to control speed of pneumatic cylinder piston movement along with the stem travel.

1 dwg

Pressure regulator // 2453723

FIELD: machine building.

SUBSTANCE: fluid pressure regulator comprises regulating chamber 9 and valve 26. Said regulating chamber 9 accommodated reciprocating piston18. The latter divides chamber 9 into first and second chambers 10, 11, respectively. The latter comprises first and second fluid inlets 12, 13 and outlets 14, 15, respectively. Inlets 12, 13 are communicated with first equipment 2 at first pressure (pin). Outlets 14, 15 are communicated with second equipment 23 at second pressure (pout). Piston 18 displaces in response to fluid pressure variation in first chamber 10 to open/close second outlet 15 to adjust second pressure (pout). Valve 26 serves to open/close first inlet 14 to vary pressure in first chamber 10.

EFFECT: adjustment of regulator outlet pressure.

14 cl, 2 dwg

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