CN201310633Y - Two-way sealing butterfly valve - Google Patents
Two-way sealing butterfly valve Download PDFInfo
- Publication number
- CN201310633Y CN201310633Y CNU2008202144159U CN200820214415U CN201310633Y CN 201310633 Y CN201310633 Y CN 201310633Y CN U2008202144159 U CNU2008202144159 U CN U2008202144159U CN 200820214415 U CN200820214415 U CN 200820214415U CN 201310633 Y CN201310633 Y CN 201310633Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- valve seat
- butterfly
- valve holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model provides a two-way sealing butterfly valve, which comprises a valve body, a valve holder, a pressing ring, a sealing ring, a butterfly plate and a pressing plate, wherein the sealing ring is disposed on the butterfly plate via the pressing plate, the valve holder is arranged inside the valve body, the pressing ring is mounted outside the valve holder, a gap is formed between the valve holder and the valve body, one end of a corrugated pipe is welded on the valve holder while the other end is welded on the valve body, and more than three through holes are evenly distributed on the pressing ring. The utility model with a floating type valve holder has the advantages that the valve holder can move along the pressure direction, thereby realizing reliable two-way sealing.
Description
Technical field
The utility model relates to a kind of valving, particularly relates to a kind of butterfly valve.
Background technique
The hard seal butterfly valve that generally uses on the present metallurgy industry gas pipe line, valve seat is fixed in the valve body by trim ring, perhaps be welded in the valve body, generally can only bear positive pressure, the reverse pressure-bearing ability, in case system's medium has backflow phenomenon, then easily cause the leakage of valve, have a strong impact on environment and personnel's safety.
Summary of the invention
Can only bear positive pressure in order to overcome existing hard seal butterfly valve, reverse pressure-bearing ability, the deficiency of easily leaking, the utility model provides a kind of bidirectional sealed butterfly valve.
The technological scheme that its technical problem that solves the utility model adopts is a kind of bidirectional sealed butterfly valve, comprise valve body, valve seat, trim ring, seal ring, butterfly plate, pressing plate, seal ring is installed on the butterfly plate by pressing plate, valve seat is installed in the valve body, and trim ring is equipped with in the valve seat outside, and a gap is arranged between valve seat and the valve body, also has a bellows, one end of bellows is welded on the valve seat, and the other end is welded on the valve body, uniform three above through holes on the trim ring.
The beneficial effects of the utility model are to adopt floating type valve seat, and valve seat can produce displacement along with the pressurized direction, thereby realizes reliable two way sealed.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is embodiment's a tectonic maps;
Among the figure: 1. trim ring; 2. valve body; 3. through hole; 4. bellows; 5. valve seat; 6. seal ring; 7. pressing plate; 8. butterfly plate.
Embodiment
As shown in Figure 1, a kind of bidirectional sealed butterfly valve, comprise valve body 2, valve seat 5, trim ring 1, seal ring 6, butterfly plate 8, pressing plate 7, seal ring 6 is installed on the butterfly plate 8 by pressing plate 7, and valve seat 5 is installed in the valve body 2, and the outside is spacing by trim ring 1, between valve seat 5 and the valve body 2 gap is arranged, also have a bellows 4, an end of bellows 4 is welded on the valve seat 5, and the other end is welded on the valve body 2.Owing to adopted bellows 4, can make valve seat 4 do moving of front and back.Uniform three above through holes on the trim ring 1.When reverse pressurized, medium acts on the valve seat 5 by the through hole on the trim ring 13, the end thrust that forms, valve seat 5 is moved right, improved the seal pressure between the sealing pair, and along with pressure medium increases, act on that sealing load also strengthens on the sealing pair, guaranteed the reverse sealing of valve effectively.
Claims (1)
1, a kind of bidirectional sealed butterfly valve, comprise valve body, valve seat, trim ring, seal ring, butterfly plate, pressing plate, seal ring is installed on the butterfly plate by pressing plate, valve seat is installed in the valve body, and trim ring is equipped with in the valve seat outside, it is characterized in that: a gap is arranged between described valve seat and the valve body, also has a bellows, one end of bellows is welded on the valve seat, and the other end is welded on the valve body, uniform three above through holes on the described trim ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202144159U CN201310633Y (en) | 2008-12-04 | 2008-12-04 | Two-way sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202144159U CN201310633Y (en) | 2008-12-04 | 2008-12-04 | Two-way sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310633Y true CN201310633Y (en) | 2009-09-16 |
Family
ID=41107886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202144159U Expired - Fee Related CN201310633Y (en) | 2008-12-04 | 2008-12-04 | Two-way sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310633Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109042A (en) * | 2011-03-18 | 2011-06-29 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN102313030A (en) * | 2010-06-29 | 2012-01-11 | 江苏神通阀门股份有限公司 | Two-way sealing butterfly valve |
| CN104006173A (en) * | 2014-02-17 | 2014-08-27 | 中亚阀门有限公司 | Bidirectional sealing type butterfly valve |
| CN107559435A (en) * | 2017-08-23 | 2018-01-09 | 永嘉县信诚科技服务有限公司 | Bidirectional pressure high temperature butterfly valve |
-
2008
- 2008-12-04 CN CNU2008202144159U patent/CN201310633Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313030A (en) * | 2010-06-29 | 2012-01-11 | 江苏神通阀门股份有限公司 | Two-way sealing butterfly valve |
| CN102109042A (en) * | 2011-03-18 | 2011-06-29 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN102109042B (en) * | 2011-03-18 | 2013-07-17 | 赵雷 | Two-way pressure-bearing fluororubber fireproof butterfly valve |
| CN104006173A (en) * | 2014-02-17 | 2014-08-27 | 中亚阀门有限公司 | Bidirectional sealing type butterfly valve |
| CN107559435A (en) * | 2017-08-23 | 2018-01-09 | 永嘉县信诚科技服务有限公司 | Bidirectional pressure high temperature butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20161204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |