CN220302765U

CN220302765U - Pneumatic butterfly valve

Info

Publication number: CN220302765U
Application number: CN202321644911.9U
Authority: CN
Inventors: 王坤情; 王建来; 陈美玲
Original assignee: Tianjin Wanli Valve Manufacturing Co ltd
Current assignee: Tianjin Wanli Valve Manufacturing Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2024-01-05
Anticipated expiration: 2033-06-26

Abstract

The utility model discloses an adjusting pneumatic butterfly valve, which relates to the technical field of butterfly valves and comprises a connecting plate, wherein the bottom end of the connecting plate is fixedly connected with a valve body, the top end of the connecting plate is movably connected with a pneumatic actuating mechanism, the pneumatic actuating mechanism comprises a cylinder box, the middle part of the lower inner wall of the cylinder box is rotationally connected with a gear, two ends of the gear are respectively connected with a toothed plate in a meshed manner, one ends of the two toothed plates are respectively fixedly connected with a push plate, one end of the push plate, which is far away from the gear, is fixedly connected with a spring, two ends of the cylinder box are respectively and movably provided with a side cover, one ends of the two side covers are respectively inserted with a fixing wire, the outer surface of the cylinder box is fixedly sleeved with a square box, one ends of the cylinder box and one end of the square box are jointly provided with two air source connectors, one ends of the two air source connectors penetrate through the box bodies of the cylinder box and the square box, when the valve plate is accidentally powered off, the spring plays a role of automatically closing the valve plate, the valve body device is provided with a sealing ring, and the sealing ring plays a role of preventing leakage and reducing abrasion of the valve plate.

Description

Pneumatic butterfly valve

Technical Field

The utility model relates to the technical field of pneumatic butterfly valves, in particular to an adjusting pneumatic butterfly valve.

Background

The pneumatic butterfly valve is composed of a pneumatic actuator and a valve body, the pneumatic butterfly valve is a pneumatic valve which is started and stopped by a circular butterfly plate rotating along with a valve rod, is mainly used as a stop valve, can be designed to have the functions of adjusting or adjusting a section valve, and is used more and more on a low-pressure large-medium-caliber pipeline.

The prior art also has the following problems:

firstly, the existing pneumatic device generally consists of a simple cylinder box and a gas source, when a pneumatic butterfly valve is electrified, a pneumatic actuating mechanism can drive a valve rod to rotate, but when the pneumatic butterfly valve is accidentally powered off, the problem that a valve plate cannot be automatically reset exists.

Secondly, in the existing valve body device, a sealing component is not generally arranged on the inner wall of the base on the outer surface of the valve plate, so that leakage occurs when liquid or gas does not need to flow, and meanwhile, the valve plate does not have wear-resistant property, so that the valve plate rotates for many times, abrasion is serious, and the utilization efficiency of the valve body is reduced.

In view of the above, the inventors propose a regulating pneumatic butterfly valve for solving the above problems.

Disclosure of Invention

The problem that a valve plate cannot be automatically reset and the valve plate is worn is solved; the utility model aims to provide an adjusting pneumatic butterfly valve.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an adjust pneumatic butterfly valve, includes the connecting plate, the bottom of connecting plate is inserted and is equipped with the connecting screw, and the connecting screw plays the effect of connection, the bottom fixedly connected with valve body of connecting plate, the top swing joint of connecting plate has pneumatic actuating mechanism, and pneumatic actuating mechanism is used for driving the valve body operation, pneumatic actuating mechanism includes the cylinder case, the lower inner wall middle part of cylinder case rotates and is connected with the gear, and the gear is used for driving the valve rod rotation, the both ends of gear all mesh and are connected with the pinion rack, two the equal fixedly connected with push pedal of one end of pinion rack, the push pedal is used for being pushed by gas, the push pedal is cylindrical, cylindrical make things convenient for the push pedal to remove, the one end fixedly connected with spring of gear is kept away from to the push pedal, and the spring plays the effect of resilience, the length of spring is the same with push pedal and the limit cover, the spring compression of being convenient for, the both ends of cylinder case all activity are equipped with the limit cover, the one end of limit cover all is inserted and is equipped with the dead wire, the fixed wire is used for fixing the limit cover, the surface fixing of cylinder case has cup jointed square cylinder, square conveniently actuating mechanism is connected with the valve body, one end and square box sets up jointly has two air source joints, and two air source joint and two air source boxes are connected with the air source through the air source.

Preferably, the valve body includes the valve rod, and the valve rod is used for driving the valve body and moves, the bottom fixed connection of cylinder case and square box is run through on the top of valve rod and the bottom of gear, the lower extreme fixedly connected with square board of connecting plate, the square board plays the effect of support, the upper portion surface and the connecting plate and the square board activity of valve rod cup joint, make things convenient for the valve rod to rotate, the lower extreme fixedly connected with base of square board, and the bottom of valve rod runs through the base and rotates with the lower inner wall of base to be connected, the external surface of base is provided with four mounting holes, plays the effect of installation location, and four mounting holes are annular array and distribute, fixed being equipped with the sealed pad on the inner wall of base plays sealed effect, the lower part external surface fixed cup joint of valve rod, and the surface of valve plate rotates with the inner wall of sealed pad to be connected, sealed pad's internal surface is smooth material for the valve plate is smooth when rotatory, the surface of valve plate is laminated with sealed outer surface of pad mutually, seepage when preventing not needing liquid or gas to flow.

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

1. according to the utility model, the pneumatic actuating mechanism is arranged, gas is filled into the cylinder box through the gas source connector, the push plate is matched with the toothed plate and the gear for use, and moves towards the back surface, so that the valve body is driven to operate, and when the valve is accidentally powered off, the spring plays a rebound role, so that the valve plate is automatically closed;

2. according to the utility model, the valve body device is arranged, when the valve body operates, the valve plate rotates on the base, the valve body device is provided with the sealing ring, the sealing ring plays a role in preventing leakage, and meanwhile, the surface of the sealing ring is smooth, so that the valve plate can rotate smoothly, and the abrasion of the valve plate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic diagram of a pneumatic actuator of the present utility model.

FIG. 3 is a schematic view of the valve body of the present utility model.

In the figure: 1. a connecting plate; 2. a pneumatic actuator; 21. a square box; 22. a cylinder box; 23. a toothed plate; 24. a gear; 25. an air source connector; 26. a push plate; 27. a spring; 28. a side cover; 29. a fixing wire; 3. a valve body; 31. a valve stem; 32. a square plate; 33. a valve plate; 34. a sealing gasket; 35. a base; 36. a mounting hole; 37. and (5) connecting screws.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one: as shown in fig. 1-3, the utility model provides an adjusting pneumatic butterfly valve, which comprises a connecting plate 1, the bottom end of the connecting plate 1 is fixedly connected with a valve body 3, the top end of the connecting plate 1 is movably connected with a pneumatic actuating mechanism 2, the pneumatic actuating mechanism 2 is used for driving the valve body 3 to operate, the pneumatic actuating mechanism 2 comprises a cylinder box 22, the cylinder box 22 is used for storing gas, a gear 24 is rotationally connected in the middle of the lower inner wall of the cylinder box 22, the gear 24 is used for driving a valve rod 31 to rotate, two ends of the gear 24 are respectively connected with a toothed plate 23 in a meshed manner, one ends of the two toothed plates 23 are respectively fixedly connected with a push plate 26, the push plates 26 play a role of being pushed by gas, thereby the toothed plates 23 drive the gear 24 to rotate, one ends of the push plates 26 far away from the toothed plates 24 are fixedly connected with springs 27, the springs 27 play a rebound role, two ends of the cylinder box 22 are respectively movably provided with side covers 28, one ends of the side covers 28 are respectively used for supporting the springs, one ends of the two side covers 28 are respectively inserted with fixing wires 29, the side covers 28 are respectively used for fixing the side covers 28, the outer surfaces of the cylinder box 22 are fixedly sleeved with a square box 21, the square box 21 is convenient for connecting the two ends of the pneumatic actuating mechanism 2 and 3, the two ends of the toothed plates 23 are respectively meshed with the toothed plates 23, the toothed plates are respectively, the toothed plates and the two air source boxes are respectively and the air source boxes 25 are connected with the air source connectors 25 and the air source connector 25 and the two air source connectors 25 and the air source connector 25 are connected.

A connecting screw 37 is inserted at the bottom end of the connecting plate 1.

By adopting the above technical scheme, the connecting screw 37 plays a role in fixing the connecting plate 1.

The length of the spring 27 is the same as the length between the push plate 26 and the side cover 28.

By adopting the above technical scheme, the spring 27 is convenient to compress.

The push plate 26 is cylindrical.

By adopting the technical scheme, the push plate 26 can be conveniently moved.

Embodiment two: as shown in fig. 3, the valve body 3 includes a valve rod 31, the valve rod 31 is used for driving the valve plate 33 to rotate, the top end of the valve rod 31 runs through the bottom end of the cylinder box 22 and the square box 21 and the bottom end fixed connection of the gear 24, the gear 24 is convenient for driving the valve rod 31 to rotate, the lower end fixedly connected with square plate 32 of the connecting plate 1, the square plate 32 plays a supporting role, the upper outer surface of the valve rod 31 is movably sleeved with the connecting plate 1 and the square plate 32, the lower end fixedly connected with a base 35, and the bottom end of the valve rod 31 runs through the base 35 and is rotationally connected with the lower inner wall of the base 35, the base 35 is used for facilitating the valve plate 3, a sealing gasket 34 is fixedly arranged on the inner wall of the rotating base 35 of the valve plate 3, the sealing gasket 34 plays a sealing role, the lower outer surface of the valve rod 31 is fixedly sleeved with the valve plate 33, the valve plate 33 is used for blocking gas or liquid flow, and the outer surface of the valve plate 33 is rotationally connected with the inner wall of the sealing gasket 34.

By adopting the technical scheme, the valve plate 33 and the sealing gasket 34 are matched for use, and the functions of preventing leakage and blocking liquid and gas are achieved

The inner surface of the gasket 34 is smooth.

By adopting the technical scheme, the sealing gasket 34 can rotate more smoothly between the inner walls of the base 35.

Four mounting holes 36 are fixedly formed in the outer surface of the base 35, and the four mounting holes 36 are distributed in an annular array.

Through adopting above-mentioned technical scheme, play the effect of conveniently installing fixedly to pneumatic butterfly valve.

The outer surface of the valve plate 33 is bonded to the outer surface of the gasket 34.

By adopting the technical scheme, the plugging effect is better through the mutual lamination.

Working principle: firstly, the gas is introduced into the joint of the gas source joint 25, the gas enters the cylinder box 22, the gas pushes the two pushing plates 26 to move towards the opposite surfaces, the pushing plates 26 move and drive the two toothed plates 23 to move in parallel, so that the gear 24 rotates, the gear drives the valve rod 31 to rotate, the valve rod 31 drives the valve plate 33 to rotate on the base 35, the butterfly valve channel is opened and closed, when the power is off, the butterfly valve channel can be closed by the rebound effect of the spring 27, the valve plate 33 can prevent leakage when liquid or gas does not need to flow through the sealing ring 34 when the valve plate 33 rotates on the base 33, meanwhile, the inner surface of the sealing ring 34 is made of smooth materials, the valve body rotates smoothly, and the abrasion of the valve plate 33 is reduced.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An adjusting pneumatic butterfly valve, comprising a connecting plate (1), characterized in that: the bottom end of the connecting plate (1) is fixedly connected with a valve body (3), and the top end of the connecting plate (1) is movably connected with a pneumatic actuating mechanism (2);

pneumatic actuating mechanism (2) are including cylinder case (22), the lower inner wall middle part rotation of cylinder case (22) is connected with gear (24), the both ends of gear (24) all mesh and are connected with pinion rack (23), two the equal fixedly connected with push pedal (26) of one end of pinion rack (23), the one end fixedly connected with spring (27) of gear (24) is kept away from to push pedal (26), the both ends of cylinder case (22) all activity are equipped with limit cap (28), two the one end of limit cap (28) is all inserted and is equipped with dead wire (29), the surface fastening of cylinder case (22) has cup jointed square box (21), the one end of cylinder case (22) and square box (21) is provided with two air source joint (25) jointly, and the box that cylinder case (22) and square box (21) were all run through to the one end of two air source joint (25).

2. An adjustable pneumatic butterfly valve according to claim 1, wherein: the valve body (3) comprises a valve rod (31), the top of valve rod (31) runs through the bottom fixed connection of cylinder case (22) and square case (21) and gear (24), the lower extreme fixedly connected with square board (32) of connecting plate (1), the upper portion surface and connecting plate (1) and square board (32) activity of valve rod (31) cup joint, the lower extreme fixedly connected with base (35) of square board (32), and the bottom of valve rod (31) runs through base (35) and rotates with the lower inner wall of base (35) to be connected, fixed be equipped with on the inner wall of base (35) is sealed and is filled up (34), the lower part external surface fixed of valve rod (31) cup joints valve plate (33), and the surface of valve plate (33) rotates with the inner wall of sealed pad (34) to be connected.

3. An adjustable pneumatic butterfly valve according to claim 1, wherein: a connecting screw (37) is inserted into the bottom end of the connecting plate (1).

4. An adjustable pneumatic butterfly valve according to claim 1, wherein: the length of the spring (27) is the same as the length between the push plate (26) and the side cover (28).

5. An adjustable pneumatic butterfly valve according to claim 1, wherein: the push plate (26) is cylindrical.

6. An adjustable pneumatic butterfly valve according to claim 2, wherein: the inner surface of the sealing gasket (34) is made of smooth materials.

7. An adjustable pneumatic butterfly valve according to claim 2, wherein: four mounting holes (36) are fixedly formed in the outer surface of the base (35), and the four mounting holes (36) are distributed in an annular array.

8. An adjustable pneumatic butterfly valve according to claim 2, wherein: the outer surface of the valve plate (33) is attached to the outer surface of the sealing gasket (34).