CN215928421U

CN215928421U - Pneumatic switch valve capable of realizing quick switching

Info

Publication number: CN215928421U
Application number: CN202122499898.XU
Authority: CN
Inventors: 滕云彪
Original assignee: Shenyang Aiteng Technology Co ltd
Current assignee: Shenyang Aiteng Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-01
Anticipated expiration: 2031-10-18

Abstract

The utility model discloses a pneumatic switch valve capable of realizing quick switching, which comprises a valve body, a driving device, a valve rod, a bottom cover and a butterfly plate, wherein the butterfly plate sequentially comprises a base plate, a connecting plate and a sealing rubber ring from inside to outside, a circular air cavity is arranged inside the sealing rubber ring, a second air pipe communicated with the internal air cavity is fixed on the sealing rubber ring, a first air pipe is embedded inside the valve rod, the bottom end of the first air pipe is in threaded connection with the second air pipe, the top end of the first air pipe extends to the outer side of the valve rod and is connected with a rubber air bag body, and an air inlet is arranged on the rubber air bag body. Thereby prolonging the service life of the whole valve and reducing the maintenance cost.

Description

Pneumatic switch valve capable of realizing quick switching

Technical Field

The utility model relates to the technical field of pneumatic switch valves, in particular to a pneumatic switch valve capable of realizing quick switching.

Background

The butterfly valve is a butterfly plate which utilizes the rotation of a circular butterfly plate along with a valve rod to open, close and adjust a fluid channel, most butterfly valves can be used for controlling a delivery switch of a circulating medium, have simple structure, small volume and light weight, can be quickly opened and closed only by rotating 90 degrees, are simple to operate, simultaneously have good fluid control characteristics, and are widely used in the fields of petroleum, chemical engineering, metallurgy, electric power, food, medicine, water supply and drainage, gas delivery and the like, a pneumatic butterfly valve takes a pneumatic device as a driving part, in the prior art, when the butterfly valve is used, the butterfly valve needs to be connected and arranged on a pipeline to be used, usually, the pneumatic butterfly valve is connected between the pipelines by matching bolts and flanges, the bolts are easy to rust, are inconvenient to assemble and disassemble after rusting, the difficulty of maintenance and replacement is increased, and the service life is prolonged, the bolt becomes flexible and leads to the problem that fluid reveals to influence pneumatic butterfly valve's sealing performance or to the regulatory function of flow, the valve is opened and is closed the speed and slowly brought the inconvenience for the user.

Chinese patent No. CN 207393975U discloses "a starting butterfly valve capable of realizing quick opening and closing", although the above problems are solved. However, the patent also has some problems, such as: the butterfly plate can produce the friction with the valve body inner wall in long-time use, and long-time use can lead to the butterfly plate to produce wearing and tearing and influence the leakproofness of whole valve. Therefore, the butterfly plate must be replaced as a whole as soon as it is worn, which not only reduces its service life but also increases maintenance costs.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a pneumatic switching valve capable of achieving rapid switching, which solves the above problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme: a pneumatic switch valve capable of realizing quick switching comprises a valve body, a driving device, a valve rod, a bottom cover and a butterfly plate, wherein the driving device is fixedly connected with the top of the valve rod, the valve body is connected with the driving device through the valve rod, a support on the valve body is fixedly connected with the valve rod through a flange, the valve rod is rotatably connected with the valve body, the bottom end of the valve rod is movably connected with the bottom cover, the butterfly plate is detachably arranged on the valve rod in an inner cavity of the valve body through a fixing part, the butterfly plate sequentially comprises a base plate, a connecting plate and a sealing rubber ring from inside to outside, the base plate is arranged on the valve rod through the fixing part, the outer wall of the base plate is in threaded connection with the inner wall of the connecting plate, the outer wall of the connecting plate is fixedly connected with the inner wall of the sealing rubber ring, a circular air cavity is arranged inside the sealing rubber ring, and a second air pipe communicated with the inner air cavity of the sealing rubber ring is fixed on the sealing rubber ring, the inside of valve rod inlays along its axial and is equipped with first trachea, and first tracheal bottom extend to with the outside of valve rod and with second trachea threaded connection, the outside that first tracheal top is located the top of flange and extends to the valve rod is connected with the rubber gasbag body, be equipped with the air inlet on the rubber gasbag body, and be equipped with sealed lid on the air inlet, the top of first trachea still is equipped with the check valve that admits air.

Furthermore, the fixing piece comprises a fastening bolt pre-embedded on the base plate and a fastening nut matched with the fastening bolt, a bolt through hole matched with the fastening bolt is formed in the valve rod, and the fastening bolt penetrates through the bolt through hole and fixes the base plate on the valve rod through the fastening nut.

Furthermore, one side of the connecting plate, which is close to the sealing rubber ring, is integrally formed with a limiting boss, and one side of the sealing rubber ring, which is close to the connecting plate, is provided with a limiting clamping groove matched with the limiting boss.

Further, the medium flow direction of the air inlet one-way valve is that the medium can only flow into the first air pipe from the rubber air bag body.

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

(1) according to the utility model, external air can enter the air cavity on the sealing rubber ring through the first air pipe and the second air pipe by pressing the rubber air bag body, so that the volume of the sealing rubber ring is expanded until the side wall of the sealing rubber ring is tightly attached to the inner wall of the valve body and the side wall of the connecting plate, and the sealing property of the valve is improved.

(2) Because the butterfly plate is at rotatory in-process, the lateral wall of sealing rubber circle can produce the friction with the inner wall of valve body and lead to the lateral wall of sealing rubber circle to receive wearing and tearing, so that sealing rubber circle and valve body inner wall produce the clearance, thereby influence the leakproofness of butterfly plate, just so, when sealing rubber circle receives wearing and tearing, only need make external gas enter into the gas cavity on the sealing rubber circle once more through pressing down the rubber gasbag body, make the volume of sealing rubber circle expand once more to closely laminate with the lateral wall of the inner wall of valve body and connecting plate, thereby avoided the necessity of changing whole valve, the life of whole valve has also been prolonged.

(3) According to the butterfly valve, the butterfly plate sequentially comprises the base plate, the connecting plate and the sealing rubber ring from inside to outside, the base plate is installed on the valve rod through the matching use of the fastening bolt and the fastening nut, the base plate is fixed with the connecting plate in a threaded connection mode, and the connecting plate is fixedly connected with the sealing rubber ring through the matching use of the limiting boss and the limiting clamping groove.

Therefore, the utility model improves the sealing performance of the whole valve by injecting gas into the sealing rubber ring to expand the volume of the sealing rubber ring until the sealing rubber ring is tightly attached to the inner wall of the valve body, and when the sealing rubber ring is abraded, the sealing rubber ring can be continuously used only by continuously injecting gas into the sealing rubber ring to enable the sealing rubber ring to be tightly attached to the inner wall of the valve body again, so that the service life of the whole valve is prolonged, and meanwhile, the maintenance cost is also reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the structure of the portion A in FIG. 2;

fig. 4 is a schematic structural diagram of the butterfly plate.

In the figure: 1. a valve body; 2. a drive device; 3. a valve stem; 4. a bottom cover; 5. a butterfly plate; 501. a substrate; 502. a connecting plate; 503. sealing the rubber ring; 6. fastening a bolt; 601. perforating the bolt; 7. fastening a nut; 8. a rubber bladder body; 9. a first air pipe; 10. a limiting boss; 11. an air inlet; 12. an air inlet check valve; 13. a second air pipe; 14. a flange; 15. limiting clamping grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: a pneumatic switch valve capable of realizing quick switching comprises a valve body 1, a driving device 2, a valve rod 3, a bottom cover 4 and a butterfly plate 5, wherein the driving device 2 is fixedly connected with the top of the valve rod 3, the valve body 1 is connected with the driving device 2 through the valve rod 3, the driving device 2 is the prior art, and details are not repeated, a bracket on the valve body 1 is fixedly connected with the valve rod 3 through a flange 14, the valve rod 3 is rotatably connected with the valve body 1, the bottom end of the valve rod 3 is movably connected with the bottom cover 4, the butterfly plate 5 is detachably mounted on the valve rod 3 in an inner cavity of the valve body 1 through a fixing piece, the butterfly plate 5 sequentially comprises a base plate 501, a connecting plate 502 and a sealing rubber ring 503 which are mounted on the valve rod 3 through fixing pieces from inside to outside, the outer wall of the base plate 501 is in threaded connection with the inner wall of the connecting plate 502, and the outer wall of the connecting plate 502 is fixedly connected with the inner wall of the sealing rubber ring 503, the inside of sealing rubber circle 503 is equipped with circular shape air cavity, and is fixed with the second trachea 13 of its inside air cavity intercommunication on the sealing rubber circle 503, the inside of valve rod 3 inlays along its axial and is equipped with first trachea 9, and the bottom of first trachea 9 extend to the outside with valve rod 3 and with second trachea 13 threaded connection, the top of first trachea 9 is located the top of flange 14 and extends to the outside of valve rod 3 and is connected with rubber gasbag body 8, be equipped with air inlet 11 on the rubber gasbag body 8, and be equipped with sealed lid on the air inlet 11, the top of first trachea 9 still is equipped with air inlet check valve 12.

In this embodiment, the fixing member includes a fastening bolt 6 pre-embedded on the base plate 501 and a fastening nut 7 adapted to the fastening bolt 6, a bolt through hole 601 adapted to the fastening bolt 6 is formed in the valve rod 3, the fastening bolt 6 passes through the bolt through hole 601 and fixes the base plate 501 on the valve rod 3 through the fastening nut 7, so as to facilitate the mounting of the butterfly plate 5 on the valve rod 3.

In this embodiment, a limiting boss 10 is integrally formed on one side of the connecting plate 502 close to the sealing rubber ring 503, and a limiting clamping groove 15 matched with the limiting boss 10 is formed on one side wall of the sealing rubber ring 503 close to the connecting plate 502, so that the sealing rubber ring 503 is conveniently clamped on the connecting plate 502.

In the present embodiment, the medium flow direction of the air inlet check valve 12 is that the medium can only flow into the first air pipe 9 from the rubber air bag body 8.

In this embodiment, the material of the sealing rubber ring 503 is neoprene CR, so that the sealing rubber ring 503 has excellent elasticity and wear resistance, and the service life of the sealing rubber ring 503 can be prolonged, and of course, the material of the sealing rubber ring 503 can also be changed according to different use environments.

As shown in FIG. 2, the base plate 501 is mounted on the valve stem 3 through the cooperation of the fastening bolt 6 and the fastening nut 7, the base plate 501 is fixed with the connecting plate 502 through a threaded connection mode, and the connecting plate 502 is fixed with the sealing rubber ring 503 through the cooperation of the limiting boss 10 and the limiting clamping groove 15, so that when the butterfly plate 5 is damaged and needs to be replaced or repaired, only the corresponding or single damaged part (such as the base plate 501, the connecting plate 502 or the sealing rubber ring 503) needs to be replaced, the replacement of the whole valve is avoided, and the maintenance cost is reduced or lowered.

The during operation carries out work through drive arrangement 2, drives to fix and carries out certain angle's rotation at valve rod 3 inside valve body 1, reaches the purpose of control butterfly plate 5 rotation, carries out 90 clockwise rotations through drive arrangement 2 control butterfly plate 5, reaches the purpose of opening the valve, carries out 90 anticlockwise rotations when controlling butterfly plate 5 through drive arrangement 2, reaches the purpose of closing the valve, accomplishes the lock water work.

In addition, before the butterfly plate 5 rotates, external air can enter the air cavity on the sealing rubber ring 503 through the first air pipe 9 and the second air pipe 13 by pressing the rubber air bag body 8, so that the volume of the sealing rubber ring 503 expands until the side wall of the sealing rubber ring 503 is tightly attached to the inner wall of the valve body 1 and the side wall of the connecting plate 502, and the sealing performance of the valve is improved. Because the butterfly plate 5 is at rotatory in-process, the lateral wall of sealing rubber circle 503 can produce the friction with the inner wall of valve body 1 and lead to the lateral wall of sealing rubber circle 503 to receive wearing and tearing, at this moment, sealing rubber circle 503 can produce the clearance with the inner wall of valve body 1, thereby influence the leakproofness of butterfly plate 5, just so, when sealing rubber circle 503 receives wearing and tearing, at this moment, only need make external gas enter into the gas cavity on sealing rubber circle 503 again through pressing rubber gasbag body 8, make the volume of sealing rubber circle 503 expand once more to closely laminate with the inner wall of valve body 1 and the lateral wall of connecting plate 502, thereby avoided the necessity of changing whole valve, the life of whole valve has also been prolonged.

If the sealing rubber ring 503 is worn to a certain extent and needs to be replaced, only the first air pipe 9 and the second air pipe 13 need to be separated, so that the air in the air cavity on the sealing rubber ring 503 is exhausted through the second air pipe 13, at this time, the volume of the sealing rubber ring 503 is reduced, then the sealing rubber ring 503 is taken down from the connecting plate 502, a new sealing rubber ring 503 is replaced again, and the replacement is simple.

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 various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a can realize pneumatic switch valve of quick switch, includes valve body (1), drive arrangement (2), valve rod (3), bottom (4) and butterfly plate (5), the top fixed connection of drive arrangement (2) and valve rod (3), and valve body (1) is connected with drive arrangement (2) through valve rod (3), flange (14) fixed connection is passed through with valve rod (3) to support on valve body (1), rotate between valve rod (3) and the valve body (1) and be connected, and the bottom and bottom (4) swing joint of valve rod (3), its characterized in that: the butterfly plate (5) is detachably mounted on a valve rod (3) in an inner cavity of the valve body (1) through a fixing piece, the butterfly plate (5) sequentially comprises a base plate (501), a connecting plate (502) and a sealing rubber ring (503) which are mounted on the valve rod (3) through the fixing piece from inside to outside, the outer wall of the base plate (501) is in threaded connection with the inner wall of the connecting plate (502), the outer wall of the connecting plate (502) is fixedly connected with the inner wall of the sealing rubber ring (503), a circular air cavity is arranged inside the sealing rubber ring (503), a second air pipe (13) communicated with the internal air cavity is fixed on the sealing rubber ring (503), a first air pipe (9) is embedded in the valve rod (3) along the axial direction of the valve rod, the bottom end of the first air pipe (9) extends to the outer side of the valve rod (3) and is in threaded connection with the second air pipe (13), the top end of the first air pipe (9) is located above a flange (14) and extends to the outer side of the valve rod (3) and is connected with the outer side of the valve rod (3) The rubber gasbag body (8), be equipped with air inlet (11) on the rubber gasbag body (8), and be equipped with sealed lid on air inlet (11), the top of first trachea (9) still is equipped with air inlet check valve (12).

2. The pneumatic switching valve capable of realizing rapid switching according to claim 1, wherein: the fixing piece comprises a fastening bolt (6) embedded on the base plate (501) and a fastening nut (7) matched with the fastening bolt (6), a bolt through hole (601) matched with the fastening bolt (6) is formed in the valve rod (3), and the fastening bolt (6) penetrates through the bolt through hole (601) and fixes the base plate (501) on the valve rod (3) through the fastening nut (7).

3. The pneumatic switching valve capable of realizing rapid switching according to claim 1, wherein: one side of the connecting plate (502) close to the sealing rubber ring (503) is integrally formed with a limiting boss (10), and one side of the sealing rubber ring (503) close to the connecting plate (502) is provided with a limiting clamping groove (15) matched with the limiting boss (10).

4. The pneumatic switching valve capable of realizing rapid switching according to claim 1, wherein: the medium flow direction of the air inlet one-way valve (12) is that the medium can only flow into the first air pipe (9) from the rubber air bag body (8).