CN210196493U - Bellows seal butterfly valve - Google Patents
Bellows seal butterfly valve Download PDFInfo
- Publication number
- CN210196493U CN210196493U CN201920689712.7U CN201920689712U CN210196493U CN 210196493 U CN210196493 U CN 210196493U CN 201920689712 U CN201920689712 U CN 201920689712U CN 210196493 U CN210196493 U CN 210196493U
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- valve
- bellows
- connecting rod
- rotation axis
- end cover
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Abstract
The utility model relates to a bellows seal butterfly valve, including the valve body, the valve plate, the end cover, the valve rod, the bellows, go up the valve gap, the rotation axis, go up the valve gap, the end cover is connected with the valve body, go up the valve gap, the center pin mutually perpendicular of end cover, the valve plate covers in end cover department, upward be equipped with the bellows in the valve gap, the rotation axis is fixed in the valve body, the valve plate uses the rotation axis to open as the rotation of axes, still include the swing arm, the rotation axis, the connecting rod, the valve rod other end is articulated with connecting rod one end, the connecting rod other end is articulated with. The advantages are that: overall structure reasonable in design, convenient implementation, the valve rod can drive the connecting rod motion through the up-and-down motion, and the connecting rod drives the valve plate rotation to realize the switch of valve plate, bellows only carries out concertina movement at this in-process, can not produce the gyration.
Description
Technical Field
The utility model belongs to the butterfly valve field especially relates to a bellows seal butterfly valve.
Background
With the rapid development of modern industries such as chemical industry, nuclear industry and the like, pipelines which are inflammable, explosive, highly toxic and have radioactive media are increasingly increased, valves used on the pipelines and devices have special and strict requirements on leakage sealing of the pipelines and the devices, and the requirements cannot be met by using a common packing sealing device, so that a valve rod sealing structure with a corrugated pipe is required. However, the bellows can only stretch out and draw back, and cannot rotate, if the bellows is driven by a rotating force, the sealing performance of the bellows is affected, and the service life of the bellows is further affected, so that the bellows for installing the rotary valve needs to adopt a special structure.
Disclosure of Invention
For overcoming the not enough of prior art, the utility model aims at providing a bellows seal butterfly valve ensures that the bellows can only carry out concertina movement, can not turn round to guarantee the bellows normal use, guarantee the leakproofness of butterfly valve.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
the utility model provides a bellows seal butterfly valve, which comprises a valve body, the valve plate, the end cover, the valve rod, the bellows, go up the valve gap, the rotation axis, go up the valve gap, the end cover is connected with the valve body, go up the valve gap, the center pin mutually perpendicular of end cover, the valve plate covers in end cover department, upward be equipped with the bellows in the valve cover, the rotation axis is fixed in the valve body, the valve plate uses the rotation axis to open as the rotation of axes, still include the swing arm, the rotation axis, the connecting rod, the valve rod other end is articulated with connecting rod one end, the connecting rod other.
The corrugated pipe is welded with the valve rod.
The two swing arms are respectively arranged on two sides of the connecting rod.
Compared with the prior art, the beneficial effects of the utility model are that:
the bellows seal butterfly valve overall structure reasonable in design, convenient implementation, the valve rod can drive the connecting rod motion through the up-and-down motion, and the connecting rod drives the valve plate rotation to realize the switch of valve plate, bellows only carries out concertina movement at this in-process, can not produce the gyration. Through this kind of structure, become reciprocating of valve rod to valve plate rotary motion, ensure the bellows seal, can leak sealedly outward, guarantee butterfly valve normal operating.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a connection structure of the valve plate.
In the figure: 1-valve body 2-end cover 3-upper valve cover 4-valve plate 5-swing arm 6-rotary shaft 7-connecting rod 8-valve rod 9-bellows.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
See fig. 1, fig. 2, a bellows seal butterfly valve, including valve body 1, valve plate 4, end cover 2, valve rod 8, bellows 9, go up valve cover 3, rotation axis 6, go up valve cover 3, end cover 2 is connected with valve body 1, go up valve cover 3, the center pin mutually perpendicular of end cover 2, valve plate 4 covers in end cover 2 department, be equipped with bellows 9 in going up valve cover 3, rotation axis 6 is fixed in valve body 1, valve plate 4 uses rotation axis 6 to open as the rotation of axes, still include swing arm 5, rotation axis 6, connecting rod 7, the valve rod 8 other end is articulated with connecting rod 7 one end, the connecting rod 7 other end is articulated with swing arm 5, swing arm 5 and valve plate 4 fixed connection, bellows 9 end connection is on valve rod 8.
Wherein the bellows 9 is welded to the valve stem 8. The number of the swing arms 5 is two, and the swing arms are respectively arranged on two sides of the connecting rod 7.
The utility model has the advantages of reasonable design, convenient implementation, valve rod 8 can drive the motion of connecting rod 7 through the up-and-down motion, and connecting rod 7 drives valve plate 4 rotatory to realize valve plate 4's switch, only carry out concertina movement at this in-process bellows 9, can not produce the gyration. Through the structure, the rotary motion of the valve plate 4 is changed into the up-and-down movement of the valve rod 8, so that the corrugated pipe 9 is ensured to be only stretched, the sealing of the corrugated pipe 9 is ensured, and the normal use performance of the corrugated pipe 9 is ensured. The utility model provides a gyration type valve can not use bellows 9 to carry out the outer sealed difficult problem that leaks, enlarged bellows range of application, make it can be used in angle stroke type valve.
Claims (3)
1. The utility model provides a bellows seal butterfly valve, which comprises a valve body, the valve plate, the end cover, the valve rod, the bellows, go up the valve gap, the rotation axis, go up the valve gap, the end cover is connected with the valve body, go up the valve gap, the center pin mutually perpendicular of end cover, the valve plate covers in end cover department, upward be equipped with the bellows in the valve cover, the rotation axis is fixed in the valve body, the valve plate uses the rotation axis to open as the rotation of axes, a serial communication port, still include the swing arm, the rotation axis, the connecting rod, the valve rod other end is articulated with connecting rod one end, the connecting rod.
2. A bellows seal butterfly valve in accordance with claim 1, wherein the bellows is welded to the valve stem.
3. A bellows seal butterfly valve according to claim 1, wherein two of said arms are provided on either side of said connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689712.7U CN210196493U (en) | 2019-05-14 | 2019-05-14 | Bellows seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689712.7U CN210196493U (en) | 2019-05-14 | 2019-05-14 | Bellows seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210196493U true CN210196493U (en) | 2020-03-27 |
Family
ID=69882850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920689712.7U Active CN210196493U (en) | 2019-05-14 | 2019-05-14 | Bellows seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210196493U (en) |
-
2019
- 2019-05-14 CN CN201920689712.7U patent/CN210196493U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |