CN218761466U

CN218761466U - Butterfly valve convenient to two-way seal

Info

Publication number: CN218761466U
Application number: CN202223039104.2U
Authority: CN
Inventors: 张雷; 杨秀红
Original assignee: Gongheng Valve Shanghai Co ltd
Current assignee: Gongheng Valve Shanghai Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-03-28
Anticipated expiration: 2032-11-15

Abstract

The butterfly valve comprises a valve body, wherein a valve core is arranged on the valve body, the valve core is rotatably installed in the valve body, switch plates are arranged on two sides of the valve core of the valve body, a first through groove is formed in each switch plate, a sealing plate is rotatably arranged on each switch plate, a second through groove is formed in each sealing plate, and the second through grooves correspond to the first through grooves; the switch board is provided with a protection assembly, and the protection assembly protects the switch board. This application makes the case in the valve body can not cause the case to be promoted by reverse and cause the leakage because of reverse pressure, has promoted the result of use of valve body.

Description

Butterfly valve convenient to two-way seal

Technical Field

The utility model belongs to the technical field of the butterfly valve technique and specifically relates to a butterfly valve convenient to two way seal is related to.

Background

At present, a butterfly valve is also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing member being a disk and rotating around a valve shaft to achieve opening and closing. The butterfly valve is a valve which uses a disc type opening and closing piece to rotate back and forth by about 90 degrees to open, close or adjust the medium flow, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling.

The prior Chinese patent with the publication number CN201661697U discloses a soft seal butterfly valve which structurally comprises a valve body, a rubber seal ring, a butterfly plate and a valve rod, wherein the rubber seal ring, the butterfly plate and the valve rod are arranged in an inner cavity of the valve body; the sealing ring groove is formed in the two sides of the inner wall of the valve body, the rubber sealing ring is buckled in the sealing ring groove, an annular boss is arranged on the outer wall of the rubber sealing ring, and an annular groove for accommodating the annular boss is formed in the inner wall of the valve body.

According to the butterfly valve, the annular boss and the annular groove are additionally arranged on the outer wall of the rubber sealing ring and the inner wall of the valve body respectively, and when the inner wall of the rubber sealing ring is extruded by rotation of the outer circumferential surface of the butterfly plate, the butterfly valve is kept in a closed state due to the fact that the annular boss is embedded in the annular groove.

In view of the above-mentioned related arts, the inventor believes that the butterfly valve is not screwed more tightly when closed, and when the medium pressure stops, the reverse pressure may cause the butterfly plate to be pushed reversely to cause leakage, which affects the use effect of the butterfly valve.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the butterfly valve cannot be screwed more and more tightly when closed and the butterfly plate is pushed reversely by reverse pressure when medium pressure stops, the butterfly valve convenient to seal bidirectionally is provided.

The application provides a butterfly valve convenient to two way seal adopts following technical scheme:

a butterfly valve convenient for bidirectional sealing comprises a valve body, wherein a valve core is arranged on the valve body, the valve core is rotatably installed in the valve body, switch plates are arranged on two sides of the valve body, which are positioned on the valve core, a first through groove is formed in each switch plate, a sealing plate is rotatably arranged on each switch plate, a second through groove is formed in each sealing plate, and the second through grooves correspond to the first through grooves; the switch board is provided with a protection assembly, and the protection assembly protects the switch board.

Optionally, the protection assembly includes a first buffer plate, a first buffer protrusion is formed on one side of the first buffer plate, which is away from the valve core, a first support spring is arranged between the first buffer plate and the switch plate, and two ends of the first support spring are respectively connected with the switch plate and the first buffer plate.

Optionally, a pull rod is arranged on the valve body, the pull rod is inserted into the valve body, one end of the pull rod is in insertion fit with the first buffer plate, an installation plate is arranged on the pull rod, a tension spring is arranged between the installation plate and the valve body, one end of the tension spring is fixed to the installation plate, and the other end of the tension spring is connected with the valve body.

Optionally, a driving motor is arranged on the switch board, the driving motor is mounted on the switch board, and an output shaft of the driving motor is connected with the closing board.

Optionally, a second buffer plate is arranged on one side of the switch plate, which is away from the first buffer plate in the thickness direction, and a second buffer bulge is formed on one side of the second buffer plate, which is close to the valve core; and a second supporting spring is arranged between the second buffer plate and the switch plate, and two ends of the second supporting spring are respectively connected with the second buffer plate and the switch plate.

Optionally, a sealing ring is arranged in the valve body, the sealing ring is arranged on each of two sides of the valve core, and the sealing ring is abutted against the valve core.

Optionally, one end of the pull rod, which is close to the first buffer plate, is provided with a leakage-proof ring, the leakage-proof ring is sleeved on the pull rod, and the leakage-proof ring is abutted to the inner wall of the valve body.

To sum up, this application includes following at least one butterfly valve beneficial technical effect convenient to two way seal:

when the butterfly valve is used, the closing plate on the two sides of the valve core rotates, the first through groove is communicated with the second through groove, when the butterfly valve is not used, the switch plate on the closing plate rotates, the first through groove is disconnected with the second through groove, the switch plate and the closing plate protect the valve core, when the butterfly valve is used, the protection assembly protects the switch plate, when medium pressure stops, the valve core in the valve body cannot be reversely pushed to cause leakage due to reverse pressure, and the using effect of the valve body is improved.

Drawings

FIG. 1 is a general schematic view of a butterfly valve embodying features of the present invention that facilitate bi-directional sealing;

FIG. 2 is a sectional view of the valve body of the present embodiment;

FIG. 3 is an exploded view of the switch board structure according to the present embodiment;

fig. 4 is an enlarged schematic view of a portion a of fig. 2.

Reference numerals: 1. a valve body; 11. a valve core; 12. a pull rod; 13. mounting a plate; 14. tensioning the spring; 15. a leakage-proof ring; 16. a seal ring; 2. a switch plate; 21. a first through groove; 22. a drive motor; 3. a closing plate; 31. a second through groove; 4. a guard assembly; 41. a first buffer plate; 411. a first buffer projection; 412. a first support spring; 42. a second buffer plate; 421. a second buffer projection; 422. a second support spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and "the" and similar referents in the description and claims of the present application does not denote a limitation of quantity, but rather denote the presence of at least one.

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses butterfly valve convenient to two way seal.

Referring to fig. 1-4, a butterfly valve convenient for two-way sealing comprises a valve body 1, wherein a valve core 11 is arranged on the valve body 1, the valve core 11 is rotatably installed in the valve body 1, switch plates 2 are arranged on two sides of the valve body 1, which are located on the valve core 11, a first through groove 21 is formed in each switch plate 2, a sealing plate 3 is rotatably arranged on each switch plate 2, a second through groove 31 is formed in each sealing plate 3, the first through groove 21 is communicated with the second through groove 31 when the valve body 1 is used, and the first through groove 21 is disconnected from the second through groove 31 when the valve body 1 is not used. Be provided with protection component 4 on the flush mounting plate 2, when valve body 1 used, protection component 4 protected flush mounting plate 2.

The switch plate 2 is integrally in a circular plate shape, and two sides of the switch plate 2, which are located on the valve core 11, are respectively provided with one switch plate. The closing plate 3 is embedded in the switch plate 2, and the closing plate 3 is rotatably arranged on the inner side of the switch plate 2. Be provided with driving motor 22 on the flush mounting plate 2, driving motor 22 installs on flush mounting plate 2, and driving motor 22's output shaft is connected with closing plate 3, and during the use, driving motor 22 drives closing plate 3 and rotates.

First logical groove 21 is provided with three at the interval on switch board 2, and three first logical groove 21 all runs through the both sides of switch board 2 thickness direction. Three second through grooves 31 are arranged on the closing plate 3 at intervals, and the three second through grooves 31 all penetrate through two sides of the closing plate 3 in the thickness direction. When the water flow flowing through the valve body 1 is large, the driving motor 22 drives the closing plate 3 to rotate in the switch plate 2, so that the first through groove 21 and the second through groove 31 are staggered, the medium with large impact force is reduced to impact on the valve core 11, and the valve core 11 is protected.

The protection component 4 includes a first buffer plate 41 and a second buffer plate 42, the first buffer plate 41 and the second buffer plate 42 are respectively located at two sides of the switch board 2 in the thickness direction, the first buffer plate 41 and the second buffer plate 42 are both in the shape of a circular plate, and the axes of the first buffer plate 41 and the second buffer plate 42 are coaxial with the axis of the switch board 2. In use, the medium impinges on the first and

second damping plates

41, 42, thereby reducing the pressure of the switchboard 2.

One side that first buffer plate 41 deviates from case 11 is formed with first buffering arch 411, and one side that second buffer plate 42 is close to case 11 is formed with second buffering arch 421, and when the medium assaulted on first buffer plate 41 and second buffer plate 42, first buffering arch 411 and second buffering arch 421 can guide the medium to play the effect that reduces the noise of valve body 1.

Be provided with first supporting spring 412 between first buffer board 41 and the switch board 2, be provided with second supporting spring 422 between second buffer board 42 and the switch board 2, the both ends of first supporting spring 412 are connected with first buffer board 41 and switch board 2 respectively, the both ends of second supporting spring 422 are connected with second buffer board 42 and switch board 2 respectively, when having great impact force medium and assault on first buffer board 41 and second buffer board 42, first buffer spring takes place the compression with the second buffer spring, wait that medium stabilizes after first buffer spring and the second buffer spring reset, reduce the impact of medium to case 11, promote the sealed effect between case 11 and the valve body 1.

When the valve is used, in order to improve the stability of the first buffer plate 41 and the second buffer plate 42, the valve body 1 is provided with the pull rod 12, the pull rod 12 corresponds to the first buffer plate 41, the pull rod 12 is inserted into the valve body 1, and one end of each of the two pull rods 12 is in insertion fit with the corresponding first buffer plate 41. When the medium flows in from one side of the valve body 1, the pull rod 12 flowing in from one side of the valve body 1 is pulled up, so that the pull rod 12 is separated from the first buffer plate 41, and then the pull rod 12 on the other side is in inserted fit with the corresponding first buffer plate 41.

All be provided with mounting panel 13 on two connecting rods, mounting panel 13 is connected with pull rod 12, and is provided with straining spring 14 between mounting panel 13 and the valve body 1, and straining spring 14 cover is established on pull rod 12, and straining spring 14's one end is connected with mounting panel 13, and the other end is connected with valve body 1, and straining spring 14 is taut on valve body 1 with mounting panel 13 and pull rod 12 for the stability of pull rod 12 grafting on first buffer board 41 can promote.

Two pull rods 12 are close to the one end that corresponds first buffer plate 41 and all are provided with leak protection ring 15, and leak protection ring 15 cover is established on pull rod 12, and the one end and the 1 inner wall of valve body of leak protection ring 15 are contradicted, through the clearance between leak protection ring 15 sealed valve body 1 and pull rod 12 to make the leakproofness in clearance between pull rod 12 and the valve body 1 promote.

In order to further improve the sealing performance of the valve core 11, the two sides of the valve core 11 are both provided with a sealing ring 16, the sealing ring 16 abuts against the valve core 11, and the sealing performance of the gap between the valve core 11 and the valve body 1 is improved by abutting against the valve core 11 through the sealing ring 16.

The implementation principle of the butterfly valve convenient for bidirectional sealing in the embodiment of the application is as follows: in the application, the staff opens case 11 on the valve body 1, then driving motor 22 drives closing plate 3 and rotates, the logical groove 31 of second on the closing plate 3 and the first logical groove 21 intercommunication on the flush mounting plate 2, the medium flows through first logical groove 21 and the logical groove 31 of second, simultaneously first buffer board 41 and the second buffer board 42 on the flush mounting plate 2, reduce the impact force of medium, when valve body 1 need not use, driving motor 22 drives closing plate 3 and rotates, the logical groove 31 of second on the closing plate 3 and the first logical groove 21 dislocation on the flush mounting plate 2, make the both ends of valve body 1 seal, at last, rotating case 11 and closing valve body 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a butterfly valve convenient to two way seal, includes valve body (1), be provided with case (11) on valve body (1), case (11) are rotated and are installed in valve body (1), its characterized in that: the valve body (1) is provided with switch plates (2) on two sides of the valve core (11), a first through groove (21) is formed in each switch plate (2), a sealing plate (3) is rotatably arranged on each switch plate (2), a second through groove (31) is formed in each sealing plate (3), and each second through groove (31) corresponds to each first through groove (21); be provided with protection component (4) on switch board (2), protection component (4) are right switch board (2) protect.

2. The butterfly valve facilitating two-way sealing of claim 1, wherein: the protection component (4) comprises a first buffer plate (41), one side of the valve core (11) deviated from the first buffer plate (41) is formed with a first buffer protrusion (411), a first support spring (412) is arranged between the first buffer plate (41) and the switch plate (2), and two ends of the first support spring (412) are respectively connected with the switch plate (2) and the first buffer plate (41).

3. The butterfly valve facilitating two-way sealing of claim 2, wherein: be provided with pull rod (12) on valve body (1), pull rod (12) are inserted and are established on valve body (1), just the one end of pull rod (12) with first buffer board (41) cooperation of pegging graft, be provided with mounting panel (13) on pull rod (12), mounting panel (13) with be provided with taut spring (14) between valve body (1), the one end of taut spring (14) with mounting panel (13) are fixed, the other end with valve body (1) are connected.

4. The butterfly valve facilitating two-way sealing of claim 1, wherein: the sealing plate is characterized in that a driving motor (22) is arranged on the switch plate (2), the driving motor (22) is installed on the switch plate (2), and an output shaft of the driving motor (22) is connected with the sealing plate (3).

5. The butterfly valve for facilitating two-way sealing of claim 2, wherein: a second buffer plate (42) is arranged on one side of the switch plate (2) deviating from the first buffer plate (41) in the thickness direction, and a second buffer bulge (421) is formed on one side of the second buffer plate (42) close to the valve core (11); a second supporting spring (422) is arranged between the second buffer plate (42) and the switch plate (2), and two ends of the second supporting spring (422) are respectively connected with the second buffer plate (42) and the switch plate (2).

6. The butterfly valve facilitating two-way sealing of claim 1, wherein: a sealing ring (16) is arranged in the valve body (1), the sealing ring (16) is positioned on each of two sides of the valve core (11), and the sealing ring (16) is abutted against the valve core (11).

7. A butterfly valve for facilitating two-way sealing according to claim 3, wherein: pull rod (12) are close to the one end of first buffer board (41) is provided with leak protection ring (15), leak protection ring (15) cover is established on pull rod (12), just leak protection ring (15) with the inner wall of valve body (1) is contradicted.