CN220523313U - Sealing structure of butterfly valve - Google Patents
Sealing structure of butterfly valve Download PDFInfo
- Publication number
- CN220523313U CN220523313U CN202321933893.6U CN202321933893U CN220523313U CN 220523313 U CN220523313 U CN 220523313U CN 202321933893 U CN202321933893 U CN 202321933893U CN 220523313 U CN220523313 U CN 220523313U
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- CN
- China
- Prior art keywords
- butterfly valve
- valve plate
- valve
- push rod
- recess
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- 238000007789 sealing Methods 0.000 title claims abstract description 30
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a sealing structure of a butterfly valve, which aims to solve the technical problems that the valve plate and the butterfly valve are easy to wear and water leakage and air suction is inconvenient to carry out on an air bag due to long-time use of a current rubber ring.
Description
Technical Field
The utility model relates to the field of sealing structures, in particular to a sealing structure of a butterfly valve.
Background
The butterfly valve is used for regulating the medium flow in the pipeline, is widely applied to production and life, and is mainly regulated and controlled by a butterfly plate and a valve rod of the butterfly valve, and the butterfly valve is driven to open and close by rotating the valve rod; thus, tightness is very important for butterfly valves.
As known from the publication 201920664902.3, a sealing structure of a butterfly valve includes a valve body, a butterfly plate, a valve stem, a sealing member, and two first shaft sleeves; the valve body is provided with an inner cavity; the valve rod is arranged in the inner cavity in a penetrating way; the two first shaft sleeves and the sealing piece are both positioned in the inner cavity; the sealing element is sleeved on the upper side of the valve rod; the two first shaft sleeves are respectively sleeved on the valve rod and are respectively arranged on the upper side and the lower side of the sealing element; the two first shaft sleeves are matched to squeeze the sealing element, so that the sealing element is respectively tightly attached to the valve rod and the cavity wall of the inner cavity; the butterfly plate is arranged in the inner cavity and sleeved on the lower side of the valve rod; the butterfly plate is fixedly coated with a rubber layer; the rubber layer is positioned between the valve body and the valve rod, and the rubber layer is respectively and closely attached to the cavity wall of the inner cavity and the valve rod, in the process of realizing the utility model, the inventor finds that at least the following problems in the prior art are not solved, the problem of difficult sealing and sealing operation is solved by sleeving the first shaft sleeve and the sealing piece and coating the rubber layer on the butterfly plate, in the use process, the valve plate in the traditional butterfly valve is generally sealed by a rubber ring, the rubber ring is easy to wear after long-time use, so that the valve plate and the butterfly valve are water-leaked, in addition, the air bag is inconvenient to inflate and pump, and the convenience of the sealing structure in the use process is reduced. For this reason, new solutions need to be designed to solve.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, adapt to the actual needs, and provide a sealing structure of a butterfly valve, so as to solve the technical problems that the valve plate and the butterfly valve are easy to wear and water leakage and air inflation and air suction of an air bag are inconvenient to occur due to long-time use of the current rubber ring.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the sealing structure of the butterfly valve comprises a valve plate, wherein a first groove, a second groove and a rotating shaft are arranged on the valve plate, the first groove surrounds the periphery of the valve plate, the second groove is positioned on one side of the first groove and surrounds the periphery of the valve plate, one end of the rotating shaft is fixedly connected with one end of the valve plate, a rubber ring is fixedly connected inside the first groove, and an air bag is arranged inside the second groove;
one side of the rotating shaft is connected with an air injection pipe in a sealing way through an air pipe, the other end of the air injection pipe is provided with a threaded push rod, and the other end of the threaded push rod is provided with a piston.
Preferably, the air bag is filled in the second groove, wherein the contact surface of the air bag and the second groove is fixedly connected.
Preferably, one end of the air delivery pipe penetrates through the rotating shaft and the inside of the valve plate, and is connected with one end of the air bag in a sealing mode.
Preferably, the outer diameter of the piston is identical to the inner diameter of the gas injection pipe, and is movably connected with the inner wall of the gas injection pipe.
Preferably, one end of the threaded push rod is fixedly connected to one end of the piston, and the other end of the threaded push rod is in threaded connection with the inside of the threaded hole.
Preferably, the threaded hole penetrates through the middle of the other end of the gas injection pipe.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, through the combination of the first groove, the second groove, the rubber ring, the air bag, the air pipe, the air injection pipe, the threaded push rod, the piston and the threaded hole, when the valve plate needs to rotate in the butterfly valve, the threaded push rod rotates in the threaded hole so as to enable the threaded push rod to move out of the air injection pipe, in the process, the threaded push rod drives the piston to move in the air injection pipe, so that the air in the air bag is pumped out by the air pipe through the air pipe, the air bag is contained in the second groove, then the valve plate is driven to rotate in the butterfly valve through the rotating shaft, when the valve plate rotates in the butterfly valve, a part of the rubber ring is separated from the inner wall of the butterfly valve, the valve plate seals the inner wall of the butterfly valve through the rubber ring and the air bag, the sealing effect between the valve plate and the butterfly valve is improved, the phenomenon that the valve plate and the butterfly valve are caused by abrasion of the rubber ring in long-time use is avoided, the air filling and water leakage of the air bag are facilitated, and convenience of the sealing structure in the use process is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of a portion of the present utility model;
FIG. 3 is a cross-sectional view of an injection tube of the present utility model;
in the figure: 1. a valve plate; 11. a first groove; 12. a second groove; 13. a rotating shaft; 14. a rubber ring; 15. an air bag; 16. a gas pipe; 2. an air injection pipe; 21. a threaded push rod; 22. a piston; 23. and (3) a threaded hole.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1: 1-3, a sealing structure of a butterfly valve comprises a valve plate 1, wherein a first groove 11, a second groove 12 and a rotating shaft 13 are arranged on the valve plate 1, the first groove 11 surrounds the periphery of the valve plate 1, the second groove 12 is positioned on one side of the first groove 11 and surrounds the periphery of the valve plate 1, one end of the rotating shaft 13 is fixedly connected with one end of the valve plate 1, a rubber ring 14 is fixedly connected inside the first groove 11, and an air bag 15 is arranged inside the second groove 12;
one side of the rotating shaft 13 is connected with the gas injection pipe 2 in a sealing way through the gas pipe 16, the other end of the gas injection pipe 2 is provided with a threaded push rod 21, the other end of the threaded push rod 21 is provided with a piston 22, when the valve plate 1 needs to rotate in the butterfly valve, the threaded push rod 21 is firstly enabled to rotate in the threaded hole 23, so that the threaded push rod 21 is enabled to move out of the gas injection pipe 2, in the process, the threaded push rod 21 can drive the piston 22 to move in the gas injection pipe 2, thereby the gas injection pipe 2 can pump out gas in the air bag 15 through the gas pipe 16, so that the air bag 15 is enabled to be contained in the second groove 12, then the rotating shaft 13 drives the valve plate 1 to rotate in the butterfly valve, when the valve plate 1 rotates in the butterfly valve, a part of the rubber ring 14 can be separated from the inner wall of the butterfly valve, the valve plate 1 seals the inner wall of the butterfly valve through the rubber ring 14 and the air bag 15, the sealing effect between the valve plate 1 and the butterfly valve is improved, the phenomenon that the rubber ring 14 is worn out for a long time to cause the valve plate 1 and water leakage is avoided, the sealing structure is convenient to inflate and pump 15 in the use process.
Specifically, referring to fig. 1, the air bag 15 is filled in the second groove 12, wherein the contact surface of the air bag 15 and the second groove 12 is fixedly connected, when the valve plate 1 seals the inner wall of the butterfly valve through the air bag 15, the air injection pipe 2 inflates the air bag 15 through the air pipe 16, at this time, the air bag 15 expands, so that one surface of the air bag 15 contacts the inner wall of the butterfly valve, and a sealing effect is achieved.
Further, referring to fig. 2, one end of the air pipe 16 passes through the rotation shaft 13 and the inside of the valve plate 1 and is in sealing connection with one end of the air bag 15, so that the air pipe 16 is conveniently hidden and installed, and the phenomenon that the air pipe 16 is broken in the use process is avoided.
It should be noted that, referring to fig. 3, the outer diameter of the piston 22 is identical to the inner diameter of the gas injection tube 2, and is movably connected with the inner wall of the gas injection tube 2, so that the anastomosis between the piston 22 and the inner wall of the gas injection tube 2 is improved, and the gas leakage phenomenon between the piston 22 and the inner wall of the gas injection tube 2 is avoided.
It should be noted that, referring to fig. 3, one end of the threaded push rod 21 is fixedly connected to one end of the piston 22, the other end of the threaded push rod 21 is screwed into the threaded hole 23, and when the threaded push rod 21 rotates in the threaded hole 23, the threaded push rod 21 drives the piston 22 to move in the air injection tube 2, so as to achieve the air injection or air extraction function.
It should be noted that, referring to fig. 3, the threaded hole 23 penetrates through the middle of the other end of the gas injection tube 2, so that one end of the threaded push rod 21 is conveniently located outside the gas injection tube 2 through the threaded hole 23.
In addition, the components designed by the utility model are all universal standard components or components known by the person skilled in the art, the structures and principles of the components are all known by the person skilled in the art through technical manuals or known by routine experimental methods, and the utility model can be completely realized by the person skilled in the art.
The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various modifications and variations can be made without departing from the spirit of the present utility model.
Claims (6)
1. The utility model provides a seal structure of butterfly valve, includes valve plate (1), its characterized in that, be provided with first recess (11), second recess (12) and axis of rotation (13) on valve plate (1), first recess (11) encircle the periphery of valve plate (1), second recess (12) are located one side of first recess (11) and encircle the periphery of valve plate (1), the one end fixed connection of axis of rotation (13) is in one end of valve plate (1), the inside fixedly connected with rubber circle (14) of first recess (11), the inside of second recess (12) is provided with gasbag (15);
one side of the rotating shaft (13) is connected with an air injection pipe (2) in a sealing way through an air pipe (16), the other end of the air injection pipe (2) is provided with a threaded push rod (21), and the other end of the threaded push rod (21) is provided with a piston (22).
2. A sealing structure of a butterfly valve according to claim 1, wherein the air bag (15) is filled in the second groove (12), wherein the contact surface of the air bag (15) and the second groove (12) is fixedly connected.
3. A butterfly valve seal according to claim 1, wherein one end of the gas pipe (16) passes through the rotation shaft (13) and the inside of the valve plate (1) and is sealingly connected to one end of the air bag (15).
4. A butterfly valve seal according to claim 1, wherein the outer diameter of the piston (22) is sized to match the inner diameter of the gas injection tube (2) and is movably connected to the inner wall thereof.
5. A butterfly valve seal according to claim 1, wherein one end of the threaded push rod (21) is fixedly connected to one end of the piston (22), and the other end of the threaded push rod (21) is screwed into the threaded hole (23).
6. A butterfly valve seal according to claim 5, wherein the threaded hole (23) extends through the middle of the other end of the gas injection tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933893.6U CN220523313U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321933893.6U CN220523313U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220523313U true CN220523313U (en) | 2024-02-23 |
Family
ID=89931701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321933893.6U Active CN220523313U (en) | 2023-07-21 | 2023-07-21 | Sealing structure of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220523313U (en) |
-
2023
- 2023-07-21 CN CN202321933893.6U patent/CN220523313U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |