CN217381695U

CN217381695U - Pneumatic valve for strengthening rebound sealing effect of pneumatic valve

Info

Publication number: CN217381695U
Application number: CN202120607202.8U
Authority: CN
Inventors: 祝鹏安; 明炜炜; 祝宁
Original assignee: Zhejiang Qinghe Industrial Technology Co ltd
Current assignee: Zhejiang Qinghe Industrial Technology Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2022-09-06
Anticipated expiration: 2031-03-25

Abstract

The utility model discloses a pneumatic valve for strengthening rebound sealing effect of the pneumatic valve, which comprises a base, a fixed splint is fixedly connected on the upper surface of the base, a valve pipe is fixedly connected on the inner wall of the fixed splint, a left flange and a right flange are respectively fixedly connected at two ends of the valve pipe, a stopping device is arranged inside the valve pipe, a fixed bracket is fixedly connected on the upper surface of the fixed splint, and a pneumatic actuating device is fixedly connected on the upper surface of the fixed bracket, the utility model is provided with a first buffer plate and a second buffer plate, thereby effectively prolonging the service life of the valve core, optimizing the opening and closing movement of the valve core from the traditional up-and-down movement into the left-and-right movement, when the valve core is opened or closed, the contact time of fluid and the sealing ring is very short, and the fluid does not impact on the sealing ring in the opening state, effectively prolonging the service life of the sealing ring, and under the closing state, the first valve core and the second valve core are supported through the side wall of a sliding block, can withstand large in-pipe pressures without failure of the shut-off.

Description

Pneumatic valve for strengthening rebound sealing effect of pneumatic valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a pneumatic valve of sealed effect of intensive pneumatic valve resilience.

Background

The valve is a common fitting in daily life and various devices, controls the passing and blocking of media, is driven by compressed air, can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil crystals, liquid metal, radioactive media and the like, and has various gate valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plunger valves, plug valves and the like, wherein the ball valves are widely applied.

The pneumatic valve on the market at present usually drives valve plate or case by the valve rod and goes up and down to open and shut, and when the case was opened or was closed, the lower surface of being equipped with the sealing washer was strikeed at a high speed of fluid all the time, and fluid flows for a long time from the lower tip of case, causes case lower tip and sealing washer damage, leads to ending inefficacy, and current pneumatic valve is in the open mode promptly the resilience state, and seal structure is unreasonable, often sees the condition that leaks from the case sliding part of case and carries out the phenomenon of maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a pneumatic valve for strengthening the rebound sealing effect of the pneumatic valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a pneumatic valve of sealed effect of pneumatic valve resilience, includes the base, fixed surface is connected with solid fixed splint on the base, gu fixed splint inner wall fixedly connected with valve pipe, valve pipe both ends difference fixedly connected with left flange, right flange, the inside stop device that is provided with of valve pipe, gu fixed splint upper surface fixedly connected with fixed bolster, gu fixed bolster upper surface fixedly connected with pneumatic actuator.

As a further description of the above technical solution:

the valve pipe outer wall fixedly connected with flows the chamber shell, valve pipe inner wall is provided with first through-hole, second through-hole, the valve pipe is link up through first through-hole, second through-hole with flowing the chamber shell.

As a further description of the above technical solution:

the stop device comprises a first valve core, a second valve core and a sliding block, wherein the first valve core and the second valve core are both connected inside the valve pipe in a sliding mode, and the sliding block is connected between the first valve core and the second valve core in a sliding mode.

As a further description of the above technical solution:

the valve comprises a first valve core and a second valve core, wherein the side wall of the first valve core is fixedly connected with a first buffer plate, the side wall of the second valve core is fixedly connected with a second buffer plate, sealing rings are sleeved between the first valve core, the outer wall of the second valve core and a valve pipe, and an inclined plane is arranged on one side, away from the first buffer plate, of the first valve core and on one side, away from the second buffer plate, of the second valve core.

As a further description of the above technical solution:

one side of the first valve core and one side of the second valve core, which are provided with inclined planes, are respectively and fixedly connected with a second hanging lug and a first hanging lug, the lower surface of the sliding block is fixedly connected with a third hanging lug, a first tension spring is arranged between the first hanging lug and the third hanging lug, and a second tension spring is arranged between the second hanging lug and the third hanging lug.

As a further description of the above technical solution:

the pneumatic actuating device comprises a pneumatic cavity upper cover and a pneumatic cavity lower cover, the pneumatic cavity lower cover is fixedly connected to the upper surface of the fixed support, the pneumatic cavity upper cover is fixedly connected to the upper surface of the pneumatic cavity lower cover, a diaphragm is fixedly connected between the pneumatic cavity upper cover and the pneumatic cavity lower cover, and a top plate are fixedly connected to the lower surface of the diaphragm.

As a further description of the above technical solution:

the pneumatic valve comprises a top plate, a pneumatic cavity, a valve pipe and a valve rod, wherein the top plate is fixedly connected with a top rod, the outer wall of the top rod penetrates through the lower wall of the lower cover of the pneumatic cavity, a spring is sleeved on the outer wall of the top rod, the spring is arranged between the lower cover of the pneumatic cavity and the top plate, the top rod is far away from one end of the top plate, the valve rod is fixedly connected with the valve rod through a connecting sleeve, the outer wall of the valve rod penetrates through the outer wall of the valve pipe, and the valve rod is far away from one end of the top rod and is fixedly connected with a sliding block.

The utility model discloses following beneficial effect has:

compared with the prior art, this strengthen pneumatic valve of sealed effect of pneumatic valve resilience, be provided with first buffer board and second buffer board at first case and second case lateral wall, the life of case has effectively been improved, slider and the inclined plane on the case through setting up, optimize into side-to-side movement from traditional up-and-down motion with the opening and shutting motion of case, when the case was opened or was closed, fluid and sealing washer contact time was very short, and fluid does not produce the impact to the sealing washer at the state of opening, effectively promote sealing washer life, under the closed state, support first case and second case through the slider lateral wall, can bear great intraductal pressure and can not end the inefficacy.

Drawings

Fig. 1 is a schematic view of an overall structure of a pneumatic valve for enhancing a rebound sealing effect of the pneumatic valve according to the present invention;

fig. 2 is a cross-sectional view of the overall structure of a pneumatic valve for enhancing the rebound sealing effect of the pneumatic valve;

fig. 3 is a partially enlarged view of a portion a in fig. 2 of a pneumatic valve for enhancing the rebound sealing effect of the pneumatic valve according to the present invention;

fig. 4 is a schematic view of a first valve core structure of a pneumatic valve for enhancing the rebound sealing effect of the pneumatic valve provided by the present invention;

fig. 5 is the valve tube structure diagram of the pneumatic valve for enhancing the rebound sealing effect of the pneumatic valve.

Illustration of the drawings:

1. a base; 2. fixing the clamping plate; 3. a valve tube; 4. a left flange; 5. a right flange; 6. a flow chamber housing; 7. an upper cover of the pneumatic cavity; 8. a lower cover of the pneumatic cavity; 9. fixing a bracket; 10. a top rod; 11. connecting sleeves; 12. a valve stem; 13. a diaphragm; 14. a top plate; 15. a spring; 16. a first valve spool; 17. a first buffer plate; 18. a second valve core; 19. a second buffer plate; 20. a first hanger; 21. a second suspension loop; 22. a third hanging lug; 23. a first tension spring; 24. a second tension spring; 25. a first through hole; 26. a second through hole; 27. a slider; 28. a seal ring; 29. a bevel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the utility model provides a pair of strengthen pneumatic valve of sealed effect of pneumatic valve resilience: including base 1, fixed surface is connected with solid fixed splint 2 on the

base

1, and 2 inner wall fixedly connected with valve pipes 3 of solid fixed splint, the difference fixedly connected with left flange 4, right flange 5 at 3 both ends of valve pipe, the valve pipe 3 is inside to be provided with stop device, and fixed surface is connected with fixed bolster 9 on the solid fixed splint 2, and fixed surface is connected with pneumatic actuator on the fixed bolster 9.

The outer wall of the valve pipe 3 is fixedly connected with the flowing cavity shell 6, the inner wall of the valve pipe 3 is provided with a first through hole 25 and a second through hole 26, the valve pipe 3 is communicated with the flowing cavity shell 6 through the first through hole 25 and the second through hole 26, and fluid enters the flowing cavity shell 6 through the first through hole 25 and flows back to the valve pipe 3 through the second through hole 26.

The cut-off device comprises a first valve core 16, a second valve core 18 and a slide block 27, wherein the first valve core 16 and the second valve core 18 are both connected inside the valve pipe 3 in a sliding mode, the slide block 27 is connected between the first valve core 16 and the second valve core 18 in a sliding mode, and the first valve core 16 and the second valve core 18 are driven to move in an opening and closing mode through the movement of the slide block 27.

The side wall of the first valve core 16 is fixedly connected with a first buffer plate 17, the side wall of the second valve core 18 is fixedly connected with a second buffer plate 19, a sealing ring 28 is sleeved between the outer wall of the first valve core 16 and the valve pipe 3, one side of the first valve core 16, which is far away from the first buffer plate 17, and one side of the second valve core 18, which is far away from the second buffer plate 19, are provided with inclined planes 29, and the arrangement of the first buffer plate 17 and the second buffer plate 19 effectively prolongs the service life of the first valve core 16 and the service life of the second valve core 18.

One side of each of the first valve core 16 and the second valve core 18, which is provided with the inclined plane 29, is fixedly connected with a second hanging lug 21 and a first hanging lug 20 respectively, the lower surface of the sliding block 27 is fixedly connected with a third hanging lug 22, a first tension spring 23 is arranged between the first hanging lug 20 and the third hanging lug 22, and a second tension spring 24 is arranged between the second hanging lug 21 and the third hanging lug 22, when the valve needs to be opened, the sliding block 27 is pulled upwards by the air pressure actuating device to drive the third hanging lug 22, the first tension spring 23 and the second tension spring 24, so that the first valve core 16 and the second valve core 18 are pulled towards the middle to be opened.

The pneumatic actuating device comprises a pneumatic cavity upper cover 7, a pneumatic cavity lower cover 8, the pneumatic cavity lower cover 8 is fixedly connected to the upper surface of a fixing support 9, the pneumatic cavity upper cover 7 is fixedly connected to the upper surface of the pneumatic cavity lower cover 8, a diaphragm 13 is fixedly connected between the pneumatic cavity upper cover 7 and the pneumatic cavity lower cover 8, a top plate 14 is fixedly connected to the lower surface of the diaphragm 13, the top plate 14 drives the diaphragm 13 to contract through injecting or absorbing compressed air between the pneumatic cavity upper cover 7 and the diaphragm 13, and therefore the top plate 14, an ejector rod 10 and a valve rod 12 are driven to move.

14 lower fixed surface of roof has ejector pin 10, ejector pin 10 outer wall runs through pneumatic chamber lower cover 8 lower wall, ejector pin 10 outer wall cover is equipped with spring 15, spring 15 sets up between pneumatic chamber lower cover 8 and roof 14, ejector pin 10 keeps away from the one end fixedly connected with valve rod 12 of roof 14, through adapter sleeve 11 fixed connection between ejector pin 10 and the valve rod 12, valve rod 12 outer wall runs through 3 outer walls of valve pipe, the one end and the slider 27 fixed connection of ejector pin 10 are kept away from to valve rod 12.

The working principle is as follows: when fluid is transported, the fluid enters the valve pipe 3 through the left flange 4, impacts the surface of the second buffer plate 19, enters the flow cavity shell 6 through the first through hole 25, enters the valve pipe 3 again through the second through hole 26, and is discharged through the right flange 5, when the stop is needed, compressed air is injected into the pneumatic cavity upper cover 7, the diaphragm 13 expands downwards after receiving pressure to press the top plate 14, when the pressure of the compressed air is greater than the elastic force of the spring 15, the top plate 14 moves downwards to drive the mandril 10 and the valve rod 12, the valve rod 12 drives the slide block 27, the slide block 27 moves downwards through the inclined plane 29 arranged on the side wall of the first valve core 16 and the second valve core 18 to press the first valve core 16 and the second valve core 18, when the sealing rings 28 on the first valve core 16 and the second valve core 18 cover the first through hole 25 and the second through hole 26, the fluid cannot enter the flow cavity shell 6, the stop is completed, and the slide block 27 is supported between the first valve core 16 and the second valve core 18, the impact of fluid with larger pressure can be borne, when the valve needs to be opened, compressed air in the upper cover 7 of the pneumatic cavity is extracted, the diaphragm 13 loses extrusion force on the spring 15 due to decompression, the spring 15 restores to jack the top plate 14 to drive the slide block 27 to move upwards and simultaneously drive the third hanging lug 22, the third hanging lug 22 pulls the first valve core 16 and the second valve core 18 towards the middle through the first tension spring 23 and the second tension spring 24, the sealing ring 28 does not cover the first through hole 25 and the second through hole 26 and flows into the flowing cavity shell 6 again, the arrangement of the first buffer plate 17 and the second buffer plate 19 effectively prolongs the service life of the first valve core 16 and the second valve core 18, the opening and closing movement of the first valve core 16 and the second valve core 18 is optimized from the traditional up-down movement to the left-right movement through the arranged slide block 27 and the inclined plane 29, when the first valve core 16 and the second valve core 18 are opened or closed, the contact time of the fluid and the sealing ring 28 is short, and the fluid does not impact the sealing ring 28 in the opening state, so that the service life of the sealing ring 28 is effectively prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an strengthen pneumatic valve of sealed effect of pneumatic valve resilience, includes base (1), its characterized in that: fixed surface is connected with solid fixed splint (2) on base (1), gu fixed splint (2) inner wall fixedly connected with valve pipe (3), valve pipe (3) both ends difference fixedly connected with left flange (4), right flange (5), valve pipe (3) inside is provided with stop device, gu fixed surface is connected with fixed bolster (9) on solid fixed splint (2), gu fixed surface is connected with atmospheric pressure actuating device on fixed bolster (9).

2. A pneumatic valve for enhancing rebound sealing of a pneumatic valve as set forth in claim 1, wherein: valve pipe (3) outer wall fixedly connected with flow chamber shell (6), valve pipe (3) inner wall is provided with first through-hole (25), second through-hole (26), valve pipe (3) link up through first through-hole (25), second through-hole (26) with flow chamber shell (6).

3. A pneumatic valve for enhancing rebound sealing of a pneumatic valve as set forth in claim 1, wherein: the cut-off device comprises a first valve core (16), a second valve core (18) and a sliding block (27), wherein the first valve core (16) and the second valve core (18) are connected inside the valve pipe (3) in a sliding mode, and the sliding block (27) is connected between the first valve core (16) and the second valve core (18) in a sliding mode.

4. A pneumatic valve for enhancing rebound sealing performance of a pneumatic valve as set forth in claim 3, wherein: the valve is characterized in that a first buffer plate (17) is fixedly connected to the side wall of the first valve core (16), a second buffer plate (19) is fixedly connected to the side wall of the second valve core (18), a sealing ring (28) is sleeved between the outer wall of the first valve core (16) and the outer wall of the second valve core (18) and the valve pipe (3), and an inclined surface (29) is arranged on one side, away from the first buffer plate (17), of the first valve core (16) and one side, away from the second buffer plate (19), of the second valve core (18).

5. A pneumatic valve for enhancing rebound sealing of a pneumatic valve as set forth in claim 4, wherein: one side of the first valve core (16) and one side of the second valve core (18) provided with the inclined plane (29) are respectively and fixedly connected with a second hanging lug (21) and a first hanging lug (20), the lower surface of the sliding block (27) is fixedly connected with a third hanging lug (22), a first tension spring (23) is arranged between the first hanging lug (20) and the third hanging lug (22), and a second tension spring (24) is arranged between the second hanging lug (21) and the third hanging lug (22).

6. A pneumatic valve for enhancing rebound sealing in a pneumatic valve as set forth in claim 1, wherein: pneumatic actuating device includes pneumatic chamber upper cover (7), pneumatic chamber lower cover (8) fixed connection is at fixed bolster (9) upper surface, pneumatic chamber upper cover (7) fixed connection is at pneumatic chamber lower cover (8) upper surface, fixedly connected with diaphragm (13) between pneumatic chamber upper cover (7) and pneumatic chamber lower cover (8), diaphragm (13) lower surface fixed connection has roof (14).

7. A pneumatic valve for enhancing rebound sealing of a pneumatic valve as set forth in claim 6, wherein: roof (14) lower surface fixedly connected with ejector pin (10), ejector pin (10) outer wall runs through pneumatic chamber lower cover (8) lower wall, ejector pin (10) outer wall cover is equipped with spring (15), spring (15) set up between pneumatic chamber lower cover (8) and roof (14), the one end fixedly connected with valve rod (12) of roof (14) are kept away from in ejector pin (10), through adapter sleeve (11) fixed connection between ejector pin (10) and valve rod (12), valve rod (12) outer wall runs through valve pipe (3) outer wall, the one end and slider (27) fixed connection of ejector pin (10) are kept away from in valve rod (12).