CN217272266U

CN217272266U - Durable pneumatic actuator for valve

Info

Publication number: CN217272266U
Application number: CN202220392277.3U
Authority: CN
Inventors: 胡嘉楠; 胡奥琦; 唐朝鹤; 胡温雨
Original assignee: Zhejiang Aozheng Automatic Control Valve Technology Co ltd
Current assignee: Zhejiang Aozheng Automatic Control Valve Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-23
Anticipated expiration: 2032-02-25

Abstract

The utility model provides a durable type valve pneumatic actuator, belong to the valve technical field, this durable type valve pneumatic actuator, including the pneumatic actuator main part, the both ends of pneumatic actuator main part are all fixedly connected with sealed apron, the internal rotation of pneumatic actuator main part is connected with the main pivot, the inner wall of both sides all sliding connection has the piston board in the pneumatic actuator main part, all fixedly connected with rack between the tip that two piston boards are close to, the circumference surface fixedly connected with gear of main pivot, the gear meshes with two racks mutually respectively, air inlet and gas outlet have been seted up in the pneumatic actuator main part, be equipped with a set of first one-way circulation subassembly in the air inlet, be equipped with a set of second one-way circulation subassembly in the gas outlet, first one-way circulation subassembly and second one-way circulation subassembly are used for controlling the air inlet and the play of air inlet and gas outlet of air inlet and prevent to appear gas countercurrent; the drive rack that can be stable removes to drive the gear and rotate, realize the stable control to valve switch.

Description

Durable type valve pneumatic actuator

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to durable type valve pneumatic actuator.

Background

The pneumatic actuator is an actuating device for opening and closing or regulating a valve by using air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head. Pneumatic actuators are sometimes also equipped with certain auxiliary devices. Commonly used valve positioners and hand wheel mechanisms. The valve positioner is used for improving the performance of the actuator by utilizing a feedback principle, so that the actuator can realize accurate positioning according to a control signal of the controller. The hand wheel mechanism is used to directly operate the control valve to maintain the normal production when the control system has no power supply, no air supply, no output of the controller or failure of the executing mechanism

When the piston plates on two sides are extruded by air, the pneumatic actuator of the valve in the prior art can influence the sealing effect of the piston plates due to the limiting devices arranged between the piston plates on two sides and the inner wall of the pneumatic actuator, and when the piston plates are extruded by air to move, the moving direction of the piston plates can be influenced without the limiting devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a durable type valve pneumatic actuator aims at solving the valve pneumatic actuator among the prior art and when air extrusion both sides piston plate removed, because be equipped with stop device between both sides piston plate and the pneumatic actuator inner wall and can influence the sealed effect of piston plate, when the piston plate received the air extrusion removal, does not set up stop device and then can influence the problem of the moving direction of piston plate.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a durable valve pneumatic actuator comprises a pneumatic actuator body, wherein two ends of the pneumatic actuator body are fixedly connected with sealing cover plates, a main rotating shaft is connected in the pneumatic actuator body in a rotating mode, inner walls of two sides in the pneumatic actuator body are connected with piston plates in a sliding mode, racks are fixedly connected between the end portions, close to the two piston plates, of the two piston plates, gears are fixedly connected to the circumferential surface of the main rotating shaft and are respectively meshed with the two racks, an air inlet and an air outlet are formed in the pneumatic actuator body, a group of first one-way circulation assemblies are arranged in the air inlet, a group of second one-way circulation assemblies are arranged in the air outlet, and the first one-way circulation assemblies and the second one-way circulation assemblies are respectively used for controlling air inlet and air outlet of the air inlet and the air outlet and preventing air backflow; two all be equipped with a plurality of reset spring between piston board and two sealed apron, it is a plurality of reset spring is used for driving two piston boards and resets, two all be equipped with the spacing subassembly of multiunit between piston board and two sealed apron, the multiunit spacing subassembly is used for restricting the moving direction of two piston boards.

As an optimized scheme of the utility model, two the equal fixedly connected with first sealing ring in circumference surface of piston plate.

As an optimized scheme, the multiunit spacing subassembly all includes fixed connection in the second mounting panel of sealed apron inner wall, the first mounting panel of one end fixedly connected with that the piston plate is close to the second mounting panel, the one end fixedly connected with slide cartridge that the second mounting panel is close to the first mounting panel, the circumferential surface of slide cartridge is located to the reset spring cover, the spout has been seted up in the slide cartridge, sliding connection has the slide in the spout, the side fixedly connected with cross slide bar of slide, cross slide bar fixed connection is in the side of first mounting panel.

As an optimal scheme of the utility model, four gag lever posts of fixedly connected with in the spout, slide sliding connection is in the circumferential surface of four gag lever posts.

As an optimal scheme, first one-way circulation subassembly includes fixed connection in the first space bar of air inlet inner wall, sliding connection has the second slide bar in the first space bar, the one end fixedly connected with limiting plate of second slide bar, the one end fixedly connected with grip block of limiting plate is kept away from to the second slide bar, the circumference fixed surface of grip block is connected with the second sealing ring, the side fixedly connected with second spring of second sealing ring, the other end fixed connection of second spring is in the side of first space bar, the circumference surface of second slide bar is located to the second spring housing.

As a preferred scheme, the one-way circulation subassembly of second includes fixed connection in intraoral second space plate of gas outlet, the side fixedly connected with third spring of second space plate, sliding connection has concave piece in the gas outlet, third spring fixed connection is in the lateral wall of concave piece, the intercommunication groove has been seted up to the inner wall of gas outlet, a plurality of intercommunicating pores have been seted up on the circumferential surface of concave piece, and is a plurality of intercommunicating pore and intercommunication groove are linked together.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in this device, through be equipped with the spacing subassembly of multiunit between sealed apron and piston plate, the spacing subassembly evenly distributed of multiunit is between sealed apron and piston plate, locates the surface of limit bit price with the reset spring cover, and the removal direction and the position when spacing subassembly can support reset spring and promote the piston plate and reset make it can not take place the skew, and the drive rack that can be stable removes to drive the gear and rotate, realize the stable control to valve switch.

2. In this device, only can aerify through aerating device through the one-way circulation subassembly control air inlet that sets up in the air inlet, can only follow inside gassing in the one-way circulation subassembly control air outlet of second through setting up in the air outlet.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front perspective view of a durable pneumatic valve actuator according to the present invention;

fig. 2 is a first partial perspective view of a durable pneumatic actuator of the present invention;

fig. 3 is a second partial perspective view of a durable pneumatic actuator for a valve according to the present invention;

fig. 4 is a first partial cross-sectional view of a durable valve pneumatic actuator in accordance with the present invention;

fig. 5 is a third partial perspective view of a durable valve pneumatic actuator according to the present invention;

fig. 6 is a second partial cross-sectional view of a durable valve pneumatic actuator in accordance with the present invention;

fig. 7 is a third partial cross-sectional view of a durable valve pneumatic actuator according to the present invention.

In the figure: 1. a pneumatic actuator body; 2. sealing the cover plate; 3. an air inlet; 4. an air outlet; 5. a main rotating shaft; 6. a rack; 7. a piston plate; 8. a gear; 9. a first seal ring; 10. a first mounting plate; 11. a cross slide bar; 12. a second mounting plate; 13. a slide cylinder; 14. a chute; 15. a limiting rod; 16. a slide plate; 17. a return spring; 18. a first interstitial plate; 19. a second slide bar; 20. a second spring; 21. a limiting plate; 22. a clamping plate; 23. a second seal ring; 24. a second interstitial plate; 25. a third spring; 26. a concave block; 27. a communicating groove; 28. a communicating hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to figures 1-7 of the drawings,

a durable valve pneumatic actuator comprises a pneumatic actuator body 1, wherein sealing cover plates 2 are fixedly connected to two ends of the pneumatic actuator body 1, a main rotating shaft 5 is connected in the pneumatic actuator body 1 in a rotating mode, piston plates 7 are connected to inner walls of two sides in the pneumatic actuator body 1 in a sliding mode, racks 6 are fixedly connected between the end portions, close to each other, of the two piston plates 7, a gear 8 is fixedly connected to the circumferential surface of the main rotating shaft 5, the gear 8 is respectively meshed with the two racks 6, an air inlet 3 and an air outlet 4 are formed in the pneumatic actuator body 1, a group of first one-way circulation assemblies are arranged in the air inlet 3, a group of second one-way circulation assemblies are arranged in the air outlet 4, and the first one-way circulation assemblies and the second one-way circulation assemblies are respectively used for controlling air inlet and outlet of the air inlet 3 and the air outlet 4 and preventing air backflow; all be equipped with a plurality of reset spring 17 between two piston plates 7 and two sealed apron 2, a plurality of reset spring 17 are used for driving two piston plates 7 and reset, all are equipped with the spacing subassembly of multiunit between two piston plates 7 and two sealed apron 2, and the spacing subassembly of multiunit is used for restricting the moving direction of two piston plates 7.

The utility model discloses an in the concrete embodiment, through be equipped with the spacing subassembly of multiunit between sealed apron 2 and piston plate 7, the spacing subassembly evenly distributed of multiunit is between sealed apron 2 and piston plate 7, moving direction and position when spacing subassembly can support piston plate 7 and reset, make it can not take place the skew, drive rack 6 that can be stable removes, thereby it rotates to drive gear 8, the realization is to the stability control of valve switch, only can aerify through aerating device through the one-way circulation subassembly control air inlet 3 of the first one-way circulation subassembly that sets up in air inlet 3, only can follow inside gassing in the one-way circulation subassembly control gas outlet 4 of second through setting up in gas outlet 4.

Example 2

Specifically, the circumferential surfaces of both piston plates 7 are fixedly connected with a first sealing ring 9.

In this embodiment: to increase the tightness of the piston plate 7.

Example 3

Specifically, the spacing subassembly of multiunit all includes second mounting panel 12 of fixed connection in 2 inner walls of sealed apron, piston plate 7 is close to the first mounting panel 10 of one end fixedly connected with of second mounting panel 12, second mounting panel 12 is close to the one end fixedly connected with slide cartridge 13 of first mounting panel 10, reset spring 17 overlaps the circumferential surface of locating slide cartridge 13, spout 14 has been seted up in slide cartridge 13, sliding connection has slide 16 in the spout 14, slide 16's side fixedly connected with cross slide bar 11, cross slide bar 11 fixed connection is in the side of first mounting panel 10.

In this embodiment: the shape of the cross slide bar 11 slides in the slide cylinder 13, so that the sliding direction of the cross slide bar 11 can be effectively limited.

Example 4

Specifically, four limiting rods 15 are fixedly connected in the sliding groove 14, and the sliding plate 16 is slidably connected to the circumferential surfaces of the four limiting rods 15.

In this embodiment: through the four limiting rods 15 arranged in the sliding groove 14, the sliding plates 16 are connected to the circumferential surfaces of the four limiting rods 15 in a sliding mode, and the direction in which the cross slide bar 11 drives the sliding plates 16 to slide in the sliding groove 14 can be limited.

Example 5

Specifically, first one-way circulation subassembly includes first space bar 18 of fixed connection in air inlet 3 inner wall, sliding connection has second slide bar 19 in the first space bar 18, the one end fixedly connected with limiting plate 21 of second slide bar 19, limiting plate 21's one end fixedly connected with grip block 22 is kept away from to second slide bar 19, grip block 22's circumference fixed surface is connected with second sealing ring 23, the side fixedly connected with second spring 20 of second sealing ring 23, the other end fixed connection of second spring 20 is in the side of first space bar 18, the circumference surface of second slide bar 19 is located to second spring 20 cover.

In this embodiment: the air charging device charges air into the pneumatic actuator main body 1 through the air inlet 3, the air extrudes the clamping plate 22, the clamping plate 22 bears pressure and extrudes the second spring 20 inwards, the clamping plate 22 moves to drive the second slide rod 19 and the limiting plate 21 to move, the clamping plate 22 moves to drive the second sealing ring 23 to remove the sealing of the air inlet 3, and the air enters the pneumatic actuator main body 1 from the air inlet 3 and extrudes the two piston plates 7 towards the two sides to move away from each other reversely.

Example 6

Specifically, the one-way circulation subassembly of second includes second space plate 24 in fixed connection 4 in the gas outlet, and the side fixedly connected with third spring 25 of second space plate 24, sliding connection has concave block 26 in 4 in the gas outlet, and third spring 25 fixed connection has a side wall in concave block 26, and intercommunication groove 27 has been seted up to the inner wall of gas outlet 4, and a plurality of intercommunicating pores 28 have been seted up on the circumferential surface of concave block 26, and a plurality of intercommunicating pores 28 and intercommunication groove 27 are linked together.

In this embodiment: the inside air presses the concave block 26, the concave block 26 presses the third spring 25, when the concave block 26 moves, the communication groove 27 is respectively communicated with the air outlet 4 and the communication hole 28, and the air in the pneumatic actuator main body 1 enters the communication hole 28 through the communication groove 27 and is discharged through the air outlet 4.

The working principle is as follows: inflating air into the pneumatic actuator main body 1 through the air inlet 3 by an externally arranged inflating device, extruding a clamping plate 22 by the air, the clamping plate 22 being pressed to extrude a second spring 20 inwards, the clamping plate 22 moving to drive a second slide bar 19 and a limiting plate 21 to move, the clamping plate 22 moving to drive a second sealing ring 23 to release the sealing of the air inlet 3, the air entering the pneumatic actuator main body 1 from the air inlet 3 to both sides to extrude two piston plates 7 moving towards the opposite direction, the two piston plates 7 driving the two racks 6 moving away from the direction, thereby driving the gear 8 to rotate, the gear 8 rotating to drive the main rotating shaft 5 to rotate, the main rotating shaft 5 rotating to drive the valve rod to rotate, thereby opening the valve, the two piston plates 7 extruding the return springs 17 at both sides, and simultaneously driving the cross slide bar 11 to slide in the slide cylinder 13, the slide cylinder 13 driving the slide plate 16 to slide on the circumferential surface of the limiting rod 15, thereby, the moving directions of the two piston plates 7 can be limited, the two piston plates 7 can move stably, the valve needs to be continuously inflated when being opened, the arrangement of the one-way circulation component of the air outlet is to balance the pressure balance inside the pneumatic actuator main body 1, when the valve is closed, the gas is stopped being infused into the pneumatic actuator main body 1, the return spring 17 drives the piston plates 7 to return to drive the rack 6 to move in the direction of approaching to each other, the gear 8 is driven to rotate, the gear 8 drives the valve rod to rotate reversely, thereby closing the valve, the two piston plates 7 extrude the air in the pneumatic actuator main body 1 and discharge the air out of the pneumatic actuator main body 1 through the air outlet 4, the inside air extrudes the concave block 26, the concave block 26 extrudes the third spring 25, when the concave block 26 moves, the communication grooves 27 are respectively communicated with the air outlet 4 and the communication holes 28, the air in the pneumatic actuator main body 1 enters the communication holes 28 through the communication grooves 27, the air is discharged from the air outlet 4, when the air pressure in the pneumatic actuator body 1 is too high when the valve is opened, the concave block 26 can be extruded, so that the communication groove 27 is respectively communicated with the air outlet 4 and the communication hole 28, and the too high air pressure can be released.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A durable type valve pneumatic actuator, includes pneumatic actuator main part (1), its characterized in that: the pneumatic actuator is characterized in that both ends of the pneumatic actuator main body (1) are fixedly connected with sealing cover plates (2), the pneumatic actuator main body (1) is rotatably connected with a main rotating shaft (5), inner walls of both sides in the pneumatic actuator main body (1) are slidably connected with piston plates (7), racks (6) are fixedly connected between the end parts of the two piston plates (7) which are close to each other, a gear (8) is fixedly connected to the circumferential surface of the main rotating shaft (5), and the gear (8) is respectively meshed with the two racks (6),

the pneumatic actuator is characterized in that a gas inlet (3) and a gas outlet (4) are formed in the pneumatic actuator body (1), a group of first one-way circulation assemblies are arranged in the gas inlet (3), a group of second one-way circulation assemblies are arranged in the gas outlet (4), and the first one-way circulation assemblies and the second one-way circulation assemblies are respectively used for controlling gas inlet and gas outlet of the gas inlet (3) and the gas outlet (4) and preventing gas backflow;

two all be equipped with a plurality of reset spring (17), a plurality of between piston board (7) and two sealed apron (2) reset spring (17) are used for driving two piston board (7) and reset, two all be equipped with the spacing subassembly of multiunit between piston board (7) and two sealed apron (2), the multiunit spacing subassembly is used for restricting the moving direction of two piston board (7).

2. A durable valve pneumatic actuator as defined in claim 1, wherein: the circumferential surfaces of the two piston plates (7) are fixedly connected with first sealing rings (9).

3. A durable valve pneumatic actuator as defined in claim 2 wherein: multiunit spacing subassembly all includes second mounting panel (12) of fixed connection in sealed apron (2) inner wall, piston plate (7) are close to the first mounting panel (10) of one end fixedly connected with of second mounting panel (12), one end fixedly connected with slide cartridge (13) that second mounting panel (12) are close to first mounting panel (10), reset spring (17) cover is located the circumference surface of slide cartridge (13), spout (14) have been seted up in slide cartridge (13), sliding connection has slide (16) in spout (14), the side fixedly connected with cross slide bar (11) of slide (16), cross slide bar (11) fixed connection is in the side of first mounting panel (10).

4. A durable valve pneumatic actuator as defined in claim 3 wherein: four limiting rods (15) are fixedly connected in the sliding groove (14), and the sliding plate (16) is connected to the circumferential surfaces of the four limiting rods (15) in a sliding mode.

5. A durable valve pneumatic actuator as defined in claim 4, wherein: first one-way circulation subassembly includes first space bar (18) of fixed connection in air inlet (3) inner wall, sliding connection has second slide bar (19) in first space bar (18), the one end fixedly connected with limiting plate (21) of second slide bar (19), the one end fixedly connected with grip block (22) of limiting plate (21) are kept away from in second slide bar (19), the circumference fixed surface of grip block (22) is connected with second sealing ring (23), the side fixedly connected with second spring (20) of second sealing ring (23), the other end fixed connection of second spring (20) is in the side of first space bar (18), the circumference surface of second slide bar (19) is located to second spring (20) cover.

6. A durable valve pneumatic actuator as defined in claim 5, wherein: the second one-way circulation assembly comprises a second gap plate (24) fixedly connected into the air outlet (4), a third spring (25) is fixedly connected to the side end of the second gap plate (24), a concave block (26) is slidably connected into the air outlet (4), the third spring (25) is fixedly connected to the side wall of the concave block (26), a communication groove (27) is formed in the inner wall of the air outlet (4), a plurality of communication holes (28) are formed in the circumferential surface of the concave block (26), and the communication holes (28) are communicated with the communication groove (27).