CN202158209U - Floating-seat two-way hard sealed butterfly valve - Google Patents
Floating-seat two-way hard sealed butterfly valve Download PDFInfo
- Publication number
- CN202158209U CN202158209U CN2011202828456U CN201120282845U CN202158209U CN 202158209 U CN202158209 U CN 202158209U CN 2011202828456 U CN2011202828456 U CN 2011202828456U CN 201120282845 U CN201120282845 U CN 201120282845U CN 202158209 U CN202158209 U CN 202158209U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- seat
- butterfly
- end cap
- 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
- 210000004907 gland Anatomy 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Abstract
A floating-seat two-way hard sealed butterfly valve comprises a valve body, a butterfly plate, a valve seat in conical-surface tight fit with the butterfly plate, an end cover, a gland and a sealing ring, wherein the valve seat is mounted on the valve body through the end cover; the end face of the valve seat which faces the end cover can be in direct contact with a medium; the sealing ring is mounted on the butterfly plate through the gland; an elastic element is mounted between the valve body and the valve seat; and an O-shaped ring surrounding the axis of the valve seat and a positioning retaining groove for fixing the O-shaped ring are arranged on the radial outer sidewall of the valve seat. The floating-seat two-way hard sealed butterfly valve provided in the utility model has the advantage of two-way tight sealing.
Description
Technical field
The utility model relates to a kind of valve switch, especially a kind of butterfly switch.
Background technique
The butterfly plate of hard seal butterfly valve is installed on the diametric(al) of pipeline.In the butterfly valve body cylindrical channel, the disc butterfly plate rotates around axis, and angle of swing is that when rotating to 90 °, valve is full-gear then between 0 °-90 °.The hard seal butterfly valve that generally uses on the various pipelines such as present metallurgy industry coal gas generally can only bear positive pressure, and the reverse pressure-bearing ability in case system's medium reverse flow then is prone to cause valve seal not tight, influences equipment and personnel's safety.
Chinese patent ZL200810242769.9 discloses a kind of hard seal butterfly valve, comprises valve body, butterfly plate, valve seat, trim ring, pressing plate, seal ring, and valve seat is installed on the valve body through trim ring; Between trim ring and the valve body packing ring is housed; Seal ring is installed on the butterfly plate through pressing plate, and butterfly spring also is housed between valve body and the valve seat, and the beneficial effect of this patent is to adopt butterfly spring; Valve seat can produce a certain amount of displacement along with the pressurized direction, thereby realizes reverse reliably sealing.But also there are several shortcomings in this patent: stressed reverse the moving of first valve seat, but pad is moving not, and the slit has just appearred in pad and valve seat like this, and medium will pass through the leakage of butterfly bullet semi-annular jade pendant from the valve seat back side along the slit, and butterfly spring can't seal fully.It two is that individual gasket seal is arranged between valve seat and the trim ring; Trim ring and gasket seal fit tightly in valve seat, and have covered the axial outer side wall of most valve seats, and this pad is killed the back medium by trim ring and got into not this plane of outer side wall of valve seat; If do not have pressure medium or pressure too little on this plane; Valve seat does not just have deboost, so valve seat also can't oppositely move, just can't realize reverse sealing.So the butterfly valve structure of this patent can't be realized reverse sealing strictly speaking.
The model utility content
The problem that the utility model will solve provides a kind of butterfly valve that can two-way all tight seals.
In order to overcome the above problems; The utility model provides a kind of floating seat two-way hard seal butterfly valve; Comprise valve body, butterfly plate, carve friction tight valve seat, end cap, gland, seal ring as the conical surface with butterfly plate; Valve seat is installed on the valve body through end cap, and said valve seat can directly contact with medium towards the end face of end cap, and seal ring is installed on the butterfly plate through gland; Between valve body and the valve seat elastic element is housed, the O type circle that described valve seat radial outside wall is provided with around its axle center reaches the fixedly locating groove of O type circle.
Can directly contact between said valve seat and the end cap; Pressure medium can act on the whole surface of valve seat towards end cap; Because O type circle sealing, pressure medium just promotes valve seat and does the piston motion between valve seat and the valve body, and the valve seat direction that makes is carved tight power and increased with the increase of reverse media pressure; So reverse sealing effect is very good, realizes that easily high pressure oppositely seals.
Said elastic element is a cylindrical spring.
The valve seat of the floating seat two-way hard seal butterfly valve of the utility model can directly contact with medium towards the axial outer side wall of end cap; Under pressure medium, can oppositely move, carve tightening seal, and the O type circle that valve seat radial outside wall is provided with around its axle center reaches the fixedly locating groove of O type circle with butterfly plate; Medium can't be from seepage between valve seat and the valve body; When no matter valve seat was done positive and negative direction unsteady, the valve seat that assurance that can both be absolute is floated and the sealing of valve body were so have the advantage of two-way tight seal.
Description of drawings
Accompanying drawing 1 is the floating seat two-way hard seal butterfly valve overall schematic of the utility model
Accompanying drawing 2 is local enlarged diagrams of Fig. 1
6 is elastic element; 7 is O type circle; 8 is valve seat; 10 is end cap; 11 is seal ring; 12 is gland; 13 is butterfly plate; 16 is valve body.
Embodiment
Below in conjunction with accompanying drawing a kind of floating seat two-way hard seal butterfly valve of the utility model is described further.
As shown in fig. 1; A kind of floating seat two-way hard seal butterfly valve of present embodiment; Comprise valve body 16, butterfly plate 13, carve friction tight valve seat 8, end cap 10, gland 12, seal ring 11 with butterfly plate as the conical surface, valve seat 8 is installed on the valve body 16 through end cap 10, and said valve seat 8 can directly contact with medium towards the end face of end cap 10; Just said end cap 10 fits in the axial outer side wall of the valve seat 8 of part towards end cap 10; Seal ring 11 is installed on the butterfly plate 13 through gland 12, between valve body 16 and the valve seat 8 elastic element 6 is housed, and the O type circle 7 that described valve seat 8 radial outside walls are provided with around its axle center reaches the fixedly locating groove of O type circle 7.Butterfly plate 13 and valve seat 8 are carved drive fit through the conical surface; When the medium acting in opposition in valve seat 8; Valve seat 8 pressuring elastic elements 6 and the distortion of moving to replenish valve rod or butterfly plate are shifted, and then carve tightening seal with butterfly plate, pass through the sealing of O type circle 7 in addition; Can make valve seat 8 not have leakage in forward and reverse unsteady process and between the valve body 16, make it have the good performance of reverse sealing.
Can directly contact between the valve seat of present embodiment and the end cap; Pressure medium can act on the whole surface of valve seat towards end cap; Because O type circle sealing, pressure medium just promotes valve seat and does the piston motion between valve seat and the valve body, and the valve seat direction that makes is carved tight power and increased with the increase of reverse media pressure; So reverse sealing effect is very good, realizes that easily high pressure oppositely seals.This improvement makes valve seat 8 better to contact with medium, in time makes moving with butterfly plate and carves tightening seal.Elastic element described in the present embodiment 6 is a cylindrical spring, and it is stressed and compression is necessary through strict calculating, and the elastic force that provides must be far smaller than the power that reverse media promotes valve seat.Can certainly be elastomers such as rubber or belleville spring.
In sum; The valve seat 8 of the floating seat two-way hard seal butterfly valve of present embodiment directly contacts with medium towards the axial outer side wall large size of end cap 10; Reverse moving that can be sensitive under pressure medium carved tightening seal with butterfly plate, and the O type circle 7 that valve seat 8 radial outside walls are provided with around its axle center reaches the fixedly locating groove of O type circle 7; Medium can't be from seepage between valve seat 8 and the valve body 16, so have the advantage of two-way tight seal.
The utility model be not limited to above embodiment.
Claims (3)
1. floating seat two-way hard seal butterfly valve; Comprise valve body (16), butterfly plate (13), carve friction tight valve seat (8), end cap (10), gland (12), seal ring (11) as the conical surface with butterfly plate (13); Valve seat (8) is installed on the valve body (16) through end cap (10); Said valve seat (8) can directly contact with medium towards the end face of end cap (10); Seal ring (11) is installed on the butterfly plate (13) through gland (12); Between valve body (16) and the valve seat (8) elastic element (6) is housed, it is characterized in that: the O type circle (7) that described valve seat (8) radial outside wall is provided with around its axle center reaches the fixedly locating groove of O type circle (7).
2. a kind of floating seat two-way hard seal butterfly valve according to claim 1 is characterized in that: can directly contact between said valve seat (8) and the end cap (10), pressure medium can act on valve seat (8) on the end face of end cap (10).
3. a kind of floating seat two-way hard seal butterfly valve according to claim 1 and 2 is characterized in that: said elastic element (6) is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202828456U CN202158209U (en) | 2011-08-05 | 2011-08-05 | Floating-seat two-way hard sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202828456U CN202158209U (en) | 2011-08-05 | 2011-08-05 | Floating-seat two-way hard sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158209U true CN202158209U (en) | 2012-03-07 |
Family
ID=45765849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202828456U Expired - Fee Related CN202158209U (en) | 2011-08-05 | 2011-08-05 | Floating-seat two-way hard sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158209U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735934A (en) * | 2019-10-16 | 2020-01-31 | 方正阀门集团有限公司 | Bidirectional floating butterfly valve |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing butterfly valve |
-
2011
- 2011-08-05 CN CN2011202828456U patent/CN202158209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735934A (en) * | 2019-10-16 | 2020-01-31 | 方正阀门集团有限公司 | Bidirectional floating butterfly valve |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing 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: 20120307 Termination date: 20170805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |