CN114215959A

CN114215959A - Explosion-proof angle seat valve

Info

Publication number: CN114215959A
Application number: CN202210156383.6A
Authority: CN
Inventors: 毛秉; 皇甫满达; 赵志强; 竺吉珍; 何健松; 徐刚行
Original assignee: Ningbo Sono Manufacturing Co ltd
Current assignee: Ningbo Sono Manufacturing Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-03-22
Anticipated expiration: 2042-02-21
Also published as: CN114215959B

Abstract

The invention is an explosion-proof angle seat valve, comprising: the device comprises a valve body, a silencer, a front cover, a piston rod, a piston, an exhaust pressure regulating joint, a rear cover, a cylinder barrel, a return spring, a guide groove, a limiting plate, a spring I, a damping shaft sleeve, an elastic component and a plug; and a water drainage damping mechanism is also arranged in the valve body. Compared with the prior art, the invention adopts the cooperation of the hemispherical plug and the staggered arc-shaped groove, and solves the technical problem that the valve body vibrates violently due to the violent fluctuation of water pressure when the piston closing pressing plate and the water flow opening are closed in the prior art. Meanwhile, as the water drainage damping mechanism is arranged in the groove, the problem of overlarge water pressure when the plug closes the groove is further prevented; and a damping shaft sleeve is arranged between the piston rod and the plug, so that the impact of water flow on the plug can be greatly reduced.

Description

Explosion-proof angle seat valve

Technical Field

The invention belongs to the technical field of valves, and particularly relates to an explosion-proof angle seat valve.

Background

The angle seat valve is a valve which utilizes a pneumatic driving mechanism to regulate the flow of fluid, and the angle seat valve needs to frequently control the on-off of a valve body in actual work. In the existing angle seat valve, a piston rod is adopted to drive a pressing plate to close a water inlet, and the pressing plate and the water inlet in the angle seat valve are usually designed to be parallel to each other, so that the water pressure is fluctuated violently at the moment of closing the water inlet, and the valve body vibrates violently. Meanwhile, when the piston rod drives the closed pressing plate to move, the impact force of water flow on the pressing plate can drive the piston rod to shake.

Disclosure of Invention

The invention aims to provide an explosion-proof angle seat valve which can greatly reduce vibration when a valve body is switched on and off, and simultaneously improve the working stability and the service life of the valve body. Aiming at the problems, the novel design is carried out on the basis of the original pneumatic angle seat valve.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: as shown in fig. 1, an explosion-proof angle seat valve is characterized by comprising: the exhaust pressure regulating valve comprises a valve body, a silencer, a front cover, a piston rod, a piston, an exhaust pressure regulating connector, a rear cover, a cylinder barrel, a return spring, a guide groove, a limiting plate, a first spring, a damping shaft sleeve, an elastic component and a plug.

The upper opening of the valve body is connected with the front cover, the piston is connected with the upper part of the piston rod through a hexagon socket screw, the right side of the exhaust pressure regulating joint is connected with the rear cover for air intake, the return spring is connected between the lower part of the piston and the upper part of the front cover, the muffler is arranged on the left side of the front cover, the limiting plate is fixed on the lower part of the piston and below the front cover, a guide groove is arranged in the plug and is in sliding fit with the bottom of the piston rod, a first spring is connected between the limiting plate and the plug, the bottom of the plug is a hemisphere, a damping shaft sleeve is fixed at the bottom of the piston rod and positioned at the inner side of the guide groove, an elastic component is fixed in the damping shaft sleeve, a groove is formed in the inner side of the valve body and located under the plug, the plug is matched with the groove when moving below the valve body, and a water inlet of the valve body is closed.

A water drainage damping mechanism is arranged in the valve body and comprises a sliding block, a second guide groove, a second spring, a water drainage hole, a water drainage pipe and a one-way valve; the groove is provided with a second guide groove, the slide block is arranged in the second guide groove in a sliding mode, the bottom of the slide block and the bottom of the second guide groove are connected with a second spring, the middle of one side of the second guide groove is provided with a water drain hole, the water drain hole is connected with a water drain pipe, the water drain pipe is communicated with the valve body and is located on one side, where the plug drains water, and a one-way valve is arranged in the water drain pipe.

In the above scheme, the piston rod is driven by the air pressure at the upper part, the piston rod moves downwards gradually, the piston rod drives the limiting plate to move downwards, the limiting plate extrudes the first spring, the spring further extrudes the plug to move downwards for a while, in the process, the water flow opening between the plug and the groove is gradually reduced, and the water pressure of the water flow to the plug and the groove is gradually increased. The impact force of water flow to the end cap can drive the end cap to move upwards to extrude the first spring, and the other side can impact the end cap to impact the piston rod rightwards. Therefore, the spring converts the impact of a part of water flow into potential energy of the spring, and the elastic component in the damping shaft sleeve fixed on the piston rod can buffer the impact force of the water flow driving the plug to the right.

The elastic component is fixed in the damping shaft sleeve, and due to the design, when the plug is in sliding connection with the guide groove of the piston rod, the damping shaft sleeve is in sliding connection with the plug, the service life of the plug in sliding fit with the piston rod is prolonged due to the arrangement of the damping shaft sleeve, and on the other hand, the elastic component can buffer the impact force of the plug.

When the valve body normally intakes water, the second spring is in a compressed state, the sliding block is located above the water drainage hole, and when the plug moves downwards and is in contact with the groove, the sliding block moves to the position below the water drainage hole.

Above-mentioned in-process, when the end cap closes with the recess gradually, the pressure of rivers can grow gradually, and at this in-process, the slider moves down under rivers pressure, and when the slider moved to outlet department, rivers can be discharged through the outlet pipe, therefore reduce the impact force of rivers to whole valve body. When the plug and the groove are completely closed, the pressure of water flow is reduced, and the sliding block returns upwards under the pressure of the second spring.

Preferably, the groove is a circular arc surface, and the diameter of the arc surface is the same as that of the hemispherical part of the plug. Above-mentioned recess cambered surface can make rivers flow through, reduces local rivers pressure, and is corresponding, the design of the bottom hemisphere of end cap, rivers when assaulting on the end cap, the impact face of rivers is the cambered surface, rivers can not form the torrent at the in-process that flows, therefore, even rivers can not cause the vibrations to the piston under the very big state of flow.

Preferably, the damping shaft sleeve is made of porous wear-resistant materials, and the elastic component is rubber. The porous material can absorb certain lubricating grease, and when the actual piston rod is in sliding fit with the damping shaft sleeve, the friction of the porous material can be greatly reduced, and the service life of the porous material is greatly prolonged. Meanwhile, the elastic component and the damping shaft sleeve are fixedly arranged, and the damping mechanism integrally formed by the elastic component can not only realize the damping function, but also be used as a sliding component.

Preferably, the left side and the right side of the groove are respectively provided with a guide groove, and the top of the sliding block is an arc-shaped surface.

Preferably, the lower part of the piston rod is provided with an external thread, and the limiting plate is connected to the external thread of the piston rod through a thread. According to the flow commonly used of actual angle seat valve work, can adjust the position of limiting plate on the piston rod, and then adjust the position of end cap for the piston rod to can rationally adjust the size of rivers import between end cap and the recess, thereby further realize the purpose of accurate regulation control water flow.

The invention adopts air as a power source, and the air has the advantages of convenient use, no pollution and the like. The method has the following beneficial effects:

1. compared with the prior art, the water pressure control valve has the advantages that the hemispherical plug and the staggered arc-shaped groove are matched, when the plug closes the groove, the acting force of water flow on the plug can be changed into the elastic potential energy of a spring I, and the technical problem that when a piston closing pressing plate and a water flow opening are closed in the prior art, water pressure is fluctuated violently, and the valve body vibrates is solved.

2. Set up sluicing damper in this application recess, when can further reduce the end cap and close the recess, water pressure is undulant, leads to the technical problem of valve body vibrations.

3. This application sets up the shock attenuation axle sleeve between piston rod and end cap, and rivers that can significantly reduce are to the frontal impact of end cap, and the porous antifriction material of shock attenuation axle sleeve adoption simultaneously can improve the life of angle seat valve.

4. This application sets up the regulation screw thread in the piston rod lower part, can adjust the position of limiting plate on the piston rod according to actual valve body rivers pressure to adjust the position of end cap.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is an overall structural view of the explosion-proof angle seat valve of the invention.

Fig. 2 is a sectional view of the drain damper mechanism according to the present invention.

Fig. 3 is a partially enlarged view of the damper bushing fixing structure according to the present invention.

Fig. 4 is a sectional view of the water flow damper mechanism of the present invention.

In the figure: 1. a valve body; 2. a seal ring; 3. a muffler; 4. a front cover; 5. a dustproof combined ring; 6. a piston rod; 7. a piston; 8. a seal member; 9. an exhaust pressure regulating joint; 10. a rear cover; 11. a cylinder barrel; 12. an elastic pad; 13. a hexagon socket head cap screw; 14. a return spring; 15. a guide groove; 16. a limiting plate; 17. a first spring; 18. a damping shaft sleeve; 19. an elastic member; 20. a plug; 21. a slider; 22. a second guide groove; 23. a second spring; 24. a groove; 25. a water drain hole; 26. a one-way valve; 27. a drain pipe; 28. a second sliding block; 29. a guide bar; 30. a chute; 31. compressing the spring.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Referring to fig. 1-3, the present invention provides a technical solution: an explosion proof angle seat valve comprising: the exhaust valve comprises a valve body 1, a silencer 3, a front cover 4, a dustproof combined ring 5, an elastic pad 12, an inner hexagonal screw 13, a piston rod 6, a piston 7, an exhaust pressure regulating joint 9, a rear cover 10, a cylinder barrel 11, a return spring 14, a guide groove 15, a limiting plate 16, a first spring 17, a damping shaft sleeve 18, an elastic component 19 and a plug 20.

The upper opening of the valve body 1 is connected with the front cover 4, the piston 7 is connected with the upper part of the piston rod 6 through an inner hexagonal screw 13, the right side of the exhaust pressure regulating joint 9 is connected with the rear cover 10 for air intake, the reset spring 14 is connected between the lower part of the piston 7 and the upper part of the front cover 4, the muffler 3 is installed at the left side of the front cover 4, the lower part of the piston 7 is fixed with the limiting plate 16 at the position below the front cover 4, the guide groove 15 is formed in the plug 20, the guide groove 15 is in sliding fit with the bottom of the piston rod 6, the first spring 17 is connected between the limiting plate 16 and the plug 20, the bottom of the plug 20 is a hemisphere, the bottom of the piston rod 6 is fixed with the damping shaft sleeve 18 at the inner side of the guide groove 15, an elastic component 19 is fixed in the damping shaft sleeve 18, and a groove 24 is formed in the inner side of the valve body 1 and under the plug 20, when the plug 20 moves downwards, the plug is matched with the groove 24, and the water inlet of the valve body 1 is closed.

A water drainage damping mechanism is arranged in the valve body 1 and comprises a slide block 21, a second guide groove 22, a second spring 23, a water drainage hole 25, a water drainage pipe and a one-way valve; the groove 24 is provided with a second guide groove 22, the slide block 21 is arranged in the second guide groove 22 in a sliding mode, the bottom of the slide block and the bottom of the second guide groove 22 are connected with a second spring 23, the middle of one side of the second guide groove 22 is provided with a drain hole 25, the drain hole 25 is connected with a drain pipe 27, the drain pipe 27 is communicated with the valve body 1 and the side, located at the drain end 20, of the drain, and a one-way valve 26 is arranged in the drain pipe 27.

Preferably, the porous material can absorb certain lubricating grease, so that the friction of the piston rod can be greatly reduced when the piston rod is in sliding fit with the damping shaft sleeve, and the service life of the piston rod is greatly prolonged. Meanwhile, the elastic component and the damping shaft sleeve are fixedly arranged, and the damping mechanism integrally formed by the elastic component can not only realize the damping function, but also be used as a sliding component.

Preferably, the grooves can be respectively provided with guide grooves according to the actual maximum pressure of water flow impact, the top of the sliding block is an arc-shaped surface, and the arc-shaped surface of the sliding block can be matched with the arc-shaped surface of the groove.

Preferably, the groove is a circular arc surface, and the diameter of the arc surface is the same as that of the hemispherical part of the plug.

Preferably, a one-way valve is fixed in each drain pipe, the one-way valve realizes one-way flow of water flow, and the water flow can only flow into the drain pipe opening on one side of the valve body from the guide groove II.

Preferably, the damping shaft sleeve is made of porous wear-resistant materials, and the elastic component is rubber.

Preferably, the front cover and the rear cover are made of cast iron.

Preferably, a sealing element 8 is arranged between the valve body and the front cover, and a sealing ring 2 is arranged between the rear cover and the cylinder barrel 11. When the sealing element 8 is installed, a certain amount of adhesive can be added to ensure the sealing effect.

In another embodiment of the present invention, as shown in fig. 4, a further improvement is made on the aforementioned water drainage damping structure, a water flow damping mechanism is arranged in the valve body 1, and the water flow damping mechanism includes a second sliding block 28, a sliding groove 30, a compression spring 31, and a guide rod 29; a sliding groove 30 is formed in the groove 24, the second sliding block 28 is arranged in the sliding groove 30 in a sliding mode, a compression spring 31 is connected between the bottom of the second sliding block 28 and the bottom of the sliding groove 30, the guide rod 29 is in sliding fit with the second sliding block 28, and a limiting portion is arranged at the top of the guide rod 29.

In the above scheme, when the piston rod is driven by the air pressure at the upper part, the piston rod gradually moves downwards, the piston rod drives the limiting plate to move downwards, the limiting plate extrudes the first spring, the spring further extrudes the plug to move downwards for a while, in the process, the excessive water pressure can extrude the second sliding block to move downwards, and the second sliding block further extrudes the compression spring, namely, the kinetic energy is converted into the potential energy of the spring by water flow. When the plug is further contacted with the groove, water flow is reduced, and the compression spring can extrude the sliding block II to move upwards to return.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An explosion-proof angle seat valve, comprising: the device comprises a valve body, a silencer, a front cover, a piston rod, a piston, an exhaust pressure regulating joint, a rear cover, a cylinder barrel, a return spring, a guide groove, a limiting plate, a spring I, a damping shaft sleeve, an elastic component and a plug;

2. An explosion proof angle seat valve as set forth in claim 1, wherein: a water drainage damping mechanism is arranged in the valve body and comprises a sliding block, a second guide groove, a second spring, a water drainage hole, a water drainage pipe and a one-way valve; the groove is provided with a second guide groove, the slide block is arranged in the second guide groove in a sliding mode, the bottom of the slide block and the bottom of the second guide groove are connected with a second spring, the middle parts of two sides of the guide groove are provided with drain holes, the drain holes are connected with a drain pipe, the drain pipe is communicated with one side, located at the drain end of the plug, of the valve body, and a one-way valve is arranged in the drain pipe.

3. An explosion proof angle seat valve as set forth in claim 2, wherein: when the valve body normally enters water, the spring II is in a compressed state, and the sliding block is positioned above the water drainage hole; when the valve body controls the flow of inlet water, the plug moves downwards, and before the plug contacts with the groove, the sliding block moves to the position below the water drainage hole.

4. An explosion proof angle seat valve as set forth in claim 1, wherein: the groove is a circular arc surface, and the diameter of the arc surface is the same as that of the hemispherical part of the plug.

5. An explosion proof angle seat valve as set forth in claim 1, wherein: the damping shaft sleeve is made of porous wear-resistant materials, and the elastic component is made of rubber.

6. An explosion proof angle seat valve as set forth in claim 2, wherein: the left side and the right side of the groove are respectively provided with a guide groove, and the top of the sliding block is an arc-shaped surface.

7. An explosion proof angle seat valve as set forth in claim 2, wherein: the lower part of the piston rod is provided with an external thread, and the limiting plate is connected to the external thread of the piston rod through a thread.