The valve valve type
The valve is designed for changing the direction of gas flow in two or more pneumatic lines. The way valve 4-way 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator and controlled by electric signals to the electromagnet through the rocker, potatoe two springs to any of the valves, it used an electromagnet with locking elements in the core management due to reallocation of pneumopathy used in the valve of the second cascade control, made in the form of a spring-loaded pneumatic piston mounted therein a plunger acting on the rocker. The technical result - the reduction of energy consumption. 1 Il. The present invention relates to pneumatic devices, which are designed to change the direction of the gas streams in two or more pneumatic lines, depending on the external control.Known pneumatic with different types of UE is nick, with a flat slide valve, crane, and others (see the book E. C. Herz "Pneumatic devices and systems in mechanical engineering", Moscow, Mashinostroyeniye, 1981, page 79, page 82, Fig.4.3).The closest in technical essence is the valve valve type device "rocker" (U.S. Pat. 32417, "Yugoslavia"), consisting of an electromagnet, the core of which is mounted the plunger alternately pressing when applying electrical signals to the electromagnet on one, then on the other shoulder of the rocker arm, thereby activating the clamping action of the spring beam and engaged in total control of two valves that distribute the flow of gas through the pneumatic lines.One of the main advantages of this valve is the absence of significant mechanical friction in the valve, which is especially important in low temperature environments that require a high reliability of operation of the valve.The disadvantage of this valve is the large volume and the consumed electric power of the power of an electromagnet, through which the plunger built into the core, rocker switches from one position to the cost of the valve as a whole.The technical object of the present invention is to remedy these disadvantages.The problem is solved in that 4-way, 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator and controlled by an electric signal applied to the electromagnet through the rocker, potatoe two springs to any one valve includes a solenoid with locking elements in the core management due to reallocation of pneumopathy used in the second cascade control, made in the form of a spring-loaded pneumatic piston with fixed therein by the plunger, acting on the rocker.The essence of the invention is illustrated in the drawing, which shows a General diagram of the valve.The valve includes a housing 1, in the bores which are the valves 2, centered by springs 3 relative to the seat 4 and 5, the overlapping channels 6 or 7 seats 4 and 5, respectively. Through the cavity 8 in the cover 9 to the channels 7 is fed to the gas pressure, and I with the atmosphere. The valves 2 are controlled by the rocker 14, preloaded springs 15, which is provided from one fixed position to another by means of the pusher 16, associated with the piston 17 through the axis 18 of rotation of the pusher and retainer spring 19. The piston 17 is located in the housing 20 has a bottom (in the figure) from the side of the cavity 21, is constantly connected with the atmosphere, a return spring 22, the top (in the figure) - the cavity 23 that is connected through the channels 24 with the control cavity 25, which is screwed into the electromagnet 26 core 27 that contains two spring-loaded locking element 28 and 29, are able to block the channels 30 and 31, respectively, to the latter of which is preloaded locking element 29 of the core 27 (according to the drawing) by a spring 32. In addition, the control cavity 25 is communicated through the channels 33 in the core 27, overlapping the channel 30 in the electromagnet 26 with the atmosphere and through the overlapping channel 31 and pneumonia 34 in the housing 20 with the gas pressure.The operation of the valve is as follows.When applying an electric signal to the electromagnet 26, the core 27 is moved upward (in the figure), overlapping the locking element 28 and channel 30 and opening the channel 31. Gas pressure from the pneumatic line 34 through the open channel 31, Aprilia spring 22. The plunger 16, moving together with the piston 17, reaches up to touch the middle of the shoulder arm 14 and, turning about the axis 18 in the piston 17 slides on the surface of the rocker arm 14 to its depression, after which it starts to move the arm 14 against the force of springs 15. Then the spring 15 after passing through the vertical (figure) position change the sign of the moment acting on the arm 14, which ultimately relates to the sphere of the left (in the figure) of the valve 2 and by means of the spring 15 presses the valve 2 to the saddle 5, way pneumonia 12 to the actuator through the valve 6, pneumonia 10 and silencers 11 is connected with the atmosphere and clipped through the overlapped channel 7 from the gas pressure in the cavity 8 of the cover 9. Right (in the figure) channel 2 by means of a spring 3 and the gas pressure is pressed against the valve seat 4 by cutting band pneumonia 13 to the actuator through the overlapped channel 6 from the atmosphere and connecting it through the channel 7 with the gas pressure in the cavity 8 of the cover 9. After removing the electrical signal from the electromagnet 26 core 27 under the action of the spring 32 moves downward (in the figure), overlapping the locking element 29 channel 31 and opening the channel 30. The cavity 23 through the channels 24, the control cavity 25, the channels 33 in the core 27 and the channel top (in the figure) position. When you re applying an electric signal to the electromagnet 26, the arm 14 is moved in the other extreme position, acting to the right (in the figure) of the valve 2, the connecting band pneumonia 13 through the channel 6, pneumonia 10 and silencers 11 with the atmosphere and pulling her through the overlapped channel 7 from the gas pressure in the cavity 8 of the cover 9. Left (in the figure) of the valve 2 connects deep pneumonia 12 through the channel 7 with the gas pressure in the cavity 8 of the cover 9 and detaches it through the overlapped channel 6 from the atmosphere.
ClaimsThe valve valve type 4-way, 2-position with four locking elements type valve-seat is made in the form of two parallel spring-loaded valves that are connected through a system of pneumatic lines with oral feeding, the atmosphere and the cavity of the actuator, and managed electrical signals to the electromagnet through the rocker, potatoe two springs to any of the valves, characterized in that it uses an electromagnet with locking elements in the core management due to reallocation of pneumopathy used in the valve of the second cascade control, vaparaiso.
FIELD: automotive industry.
SUBSTANCE: distributor comprises housing provided with the central cylindrical bore and control passages oriented radially, cylindrical slide with collars sealed over the outer surface, at least one electropneumatic control valve, and system of passages and air-lines that connect the distributor with the actuator (air-operated cylinder). The cylindrical slide is mounted directly in the bore of the housing for permitting axial movement.
EFFECT: enhance reliability.
4 cl, 5 dwg
SUBSTANCE: hydraulic control valve is designed to control hydraulically operated assembly units of mobile machines. The two-stage hydraulic control valve with controlled time of the second stage slide valve switching over consists of the first stage hydraulic control valve with electromagnets and the second stage hydraulic control valve comprising a body with cast channels to connect the working hydraulic lines and control lines, a slide valve with return springs arranged on its ends, end face covers. In compliance with this invention, threaded throttle control elements interacting with spring-loaded check valves are arranged in the said end face covers, one in each cover.
EFFECT: simplification of design, higher reliability.
FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used in control over whatever assemblies with actuators controlled by remote means. The electrohydraulic on\off four-line slide control valve with actuator and hydraulic valve is proposed. Note that the actuator front flange accommodates a hydraulic valve. Working fluid is fed from the electrohydraulic valve into the slide control valve chambers via the hydraulic valve.
EFFECT: higher reliability.
FIELD: instrument engineering.
SUBSTANCE: said unit is designed for valve control of operating fluid to various hydraulic consumers. The unit comprises a square metal case with internal channels, four external branch lines and independent tank ports, pilot-operated valves consisting of a gate, a pilot, a flange with supply, branch and tank ports with in-built end cap in one of two control pressure supply (branch) channels to the gate, the return valves in-built in branch channels of external branch and supply lines of operating fluid. The initial position of the unit involves combined number and arrangement of plugs in the flanges, the return valves supplying control pressure from external supply and branch lines to the gates of the controlled valves thereby changing between normally opened on normally closed positions thereof and on the contrary. There are twelve such positions, and further changing of the unit positions is carried out by combination and number of the pilots actuated by electric means. The return valves ensure supply (branch) of operating fluid to any of four external lines.
EFFECT: high leak tightness, handling ease and ease of fabrication; high reliability and maintainability.
FIELD: engines and pumps.
SUBSTANCE: proposed valve serves to vary direction of the flow and/or to start (stop) compressed airflow in air lines of pneumatic drives depending upon mechanical, pneumatic or electric control effect. It consists of plunger casing at least one electropneumatic valve and mechanical back-up drive. Plunger built-up casing consists of metal perforated tube supporting parts fitted thereon and made from polymer thermoplastic material, said parts being tightened together by flanges with the help of nuts and studs. Casing tightness is provided for by a system of sealing elements. Electropneumatic valve of control valve incorporates reinforced locking elements of the armature.
EFFECT: reduced weight and costs, higher reliability and expanded performances.
10 cl, 16 dwg
FIELD: machine building.
SUBSTANCE: hydraulic valve consists of case with channels of hydraulic feed supply and working cavity channels, of electro-hydraulic valve, of hydraulic compensator with isolating valve, of two-stage-electro-fluid amplifier of "nozzle-gate" type, of damping throttle, and of two replenishing and two safety valves. The hydraulic valve is equipped with six-port two-position annular flow valve with a slide of small length with internal channels and a throttle orifice in a collar of the slide. The valve shuts off a drain channel of the electro-hydraulic amplifier from a draining hydraulic line running to the hydraulic compensator and simultaneously it communicates it with a drain through the throttle orifice in the collar of the slide when the working cavity channels operate under the mode of annular flow. Also, the valve totally communicates the drain channel of the electro-hydraulic amplifier with the drain hydraulic line to the hydraulic compensator and cuts off the throttle orifice in the collar of the slide from the drain channel of the electro-hydraulic amplifier under the control mode.
EFFECT: raised reliability, simplified design, and reduced dimensions and weight of hydraulic valve.
FIELD: engines and pumps.
SUBSTANCE: device is meant for control of position of actuator in aircraft engine using electrically controlled servo-valve. Actuator (50) includes a slide (52) with at least two steps (54, 56) meant for sliding in cylinder, and two chambers (62, 64) of control connected with corresponding workholes (85, 86) of electrically controlled hydraulic distributor (20) of servo-valve. Chambers (62, 64) of control are located each on one side of corresponding step, and intermediate chamber connected to high or low pressure is located between other sides of steps. In case of failure of electrical control a slider of distributor (20) is set to protection position in which in chambers (62, 64) of control of actuator the same low or high pressure is settled opposite to pressure generated in intermediate chamber (66), so that each step (54, 56) of actuator slider is influenced by high pressure on one side and low pressure on the other side. Tightness between each step (54, 56) of actuator slider and actuator cylinder (60) is provided by dynamic sealing (70) producing friction force between step and cylinder depending on pressure difference influencing two sides of step, so that in case of failure of electrical control actuator slide valve stops in its position at the moment of failure ("failure freezing"). Actuator (50) may be a unit for aircraft engine fuel measurement.
EFFECT: higher reliability.
4 cl, 10 dwg
FIELD: machine building.
SUBSTANCE: proposed mechanism comprises pilot stage made up of electrohydraulic proportioning valve electrically connected to control unit, main stage made up of three-line restricting slide multiposition hydraulic control valve and element indicating filling of throw-in friction-clutch hydraulic cylinder. Main stage and pilot stage attached to main valve body joint surface are integrated in single unit. Said indicator is structurally separated from main stage. Main stage body hydraulic chambers are arranged on the side of its joint to controlled structure and geometrically defined by combination of planes and cylindrical surfaces. Said chambers are produced by machining to feature box shape. Aforesaid indicator is made up of one or several elements, i.e. pressure gage, working fluid flow valve, or flow rate meter, friction-clutch drive and drive part rpm transducers.
EFFECT: higher reliability.
7 cl, 9 dwg