CN2310897Y - Eccentric flanged butterfly valve with soft sealing device - Google Patents
Eccentric flanged butterfly valve with soft sealing device Download PDFInfo
- Publication number
- CN2310897Y CN2310897Y CN 97244030 CN97244030U CN2310897Y CN 2310897 Y CN2310897 Y CN 2310897Y CN 97244030 CN97244030 CN 97244030 CN 97244030 U CN97244030 U CN 97244030U CN 2310897 Y CN2310897 Y CN 2310897Y
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- valve
- valve plate
- utility
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- sealing
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- Expired - Lifetime
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Abstract
The utility model relates to an eccentric flange butterfly valve with a soft sealing device, which is characterized in that a valve plate is made into a frustum shape and the soft sealing device is arranged on the valve plate and a valve body. The utility model has the advantages that an endless belt in the soft sealing device and a rubber seal seat can automatically establish the sealing specific pressure, and the sealing specific pressure of the sealing points is identical; in addition, the opening torque and the closing torque are small, the valve plate is opened and closed agilely and the structure of the eccentric flange butterfly valve is compact. The sealing part of the utility model is not mechanically connected. The utility model is more suitable for the operating condition in bad environment. The utility model achieves the purposes of good sealing effect, strong erosion resistance of the sealing seat, convenient maintenance and long service life.
Description
The utility model belongs to F16K valve class technology, particularly relates to a kind of eccentric flange butterfly valve that has soft seal device.
The eccentric flange butterfly valve that uses in the known technology adopts the rubber base sealing mostly at present, it exists not enough: the first is when matching allowance is excessive between rubber seal seat and the sealing surface, Open valve is wrapped up in the circle phenomenon sometimes, even also can tear rubber ring, and moment of torsion also increases.And when matching allowance is too small between rubber seal seat and the sealing surface, can not guarantee the sealability of valve again.It two is along with variation of temperature, and the closure size of rubber seal seat is difficult to guarantee, directly influences the overall performance of valve.It three is that the rubber seal seat of valve internal is that pressured ring and bolt compress, when system works, again because the flow velocity instability of water, therefore when valve opening, the valve plate chatter can take place, make bolt looseness, sometimes also the bolt falling phenomenon can take place, cause valve invalidation.
The purpose of this utility model be to overcome the deficiency in the known technology and provide a kind of can be because of the excessive circle of wrapping up in of matching allowance between seal arrangement and the sealing surface, even tear the rubber ring phenomenon; Its magnitude of interference is too small and can not guarantee the sealability of valve.And can also avoid effectively when valve opening, the valve plate chatter takes place and make the bolt looseness phenomenon; Reach the guaranteed eccentric flange butterfly valve that has soft seal device of valve seal performance.
The utility model is by rotating shaft is housed in valve body, by connecting bearing transmission device is installed on the valve body, transmission device again with valve body in go up rotating shaft the upper end be connected by key, the lower end of going up rotating shaft in the valve body connects valve plate by taper pin, valve plate also connects an end of lower rotary shaft by taper pin, the lower rotary shaft the other end is by the Bearing Installation bottom cover, on the eccentric flange butterfly valve that the bottom end closure composition also is installed on the bottom cover, be to realize the purpose of this utility model like this: valve plate is made the frustum shape and had groove thereon, on valve plate and valve body, soft seal device is installed, the concrete structure of described soft seal device is, body cavity has groove, in groove, place the rubber seal seat that the cross section is thread form, at the groove of valve body and the space filling epoxy resin of rubber seal seat; On the frustum sealing surface of valve plate, be with endless belt, the space filling epoxy resin of groove on valve plate outer rim and valve plate and endless belt.
The endless belt material that is with on the frustum sealing surface of valve plate in above-mentioned is in addition elected stainless steel as.
The utility model has following accompanying drawing:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an A enlarged diagram among Fig. 1.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
To go up rotating shaft 10 and be installed in the valve body 4, and connect bearing 11 and be installed on the valve body, and by connecting bearing transmission device 12 will be installed also on it, transmission device is connected by key with the interior rotating shaft upper end of going up of valve body.Going up the rotating shaft lower end in the valve body is connected with valve plate 9 by taper pin 15, valve plate also is connected with an end of lower rotary shaft 8 by taper pin 7, for valve plate is opened and closed flexibly, in the utility model, valve plate 9 to be made the frustum shape and also have groove 17 thereon, the valve plate running orbit is referring to B among Fig. 2.The cover package material is stainless endless belt 6 on valve plate frustum sealing surface, have groove 16 at valve body 4 inner chambers, place the rubber seal seat 5 that the cross section is thread form in its groove, valve plate is closed, under certain pressure, give valve body groove and rubber seal seat space and valve plate groove and valve plate outer rim and endless belt space filling epoxy resin 14 and epoxy resin 13 simultaneously, make and be linear sealing between stainless steel endless belt and the rubber seal seat and set up seal pressure automatically, after treating that epoxy resin solidifies fully, open valve plate more again.The other end that connects described lower rotary shaft is installed bottom cover 2 by bearing 3, and bottom end closure 1 is installed on the bottom cover again.
The utlity model has advantage and good effect is: owing to adopt soft close in the utility model Seal apparatus make the bad band of stainless steel and rubber seal seat energy automatic Establishment seal pressure, and each is close The seal pressure of seal point is identical, and open and close torque is little, has overcome the deficiency that exists in the known technology, Therefore realized that valve plate opens and closes flexibly the characteristics of compact conformation. Other the utility model sealing The position machinery-free connects, and more is applicable to the use of adverse circumstances operating mode, reaches good sealing effect and sealing The seat erosion resistibility is strong and be convenient to keep in repair, purpose that the life-span is long.
Claims (2)
1. eccentric flange butterfly valve that has soft seal device, mainly be by rotating shaft is housed in valve body, by connecting bearing transmission device is installed on the valve body, transmission device again with valve body in go up rotating shaft the upper end be connected by key, the lower end of going up rotating shaft in the valve body connects valve plate by taper pin, valve plate also connects an end of lower rotary shaft by taper pin, the lower rotary shaft the other end is by the Bearing Installation bottom cover, bottom end closure also is installed on bottom cover to be formed, it is characterized in that: valve plate is made the frustum shape and had groove thereon, on valve plate and valve body, soft seal device is installed, the concrete structure of described soft seal device is, body cavity has groove, places the rubber seal seat that the cross section is thread form in groove, at the groove of valve body and the space filling epoxy resin of rubber seal seat; On the frustum sealing surface of valve plate, be with endless belt, the space filling epoxy resin of groove on valve plate outer rim and valve plate and endless belt.
2. the eccentric flange butterfly valve that has soft seal device according to claim 1 is characterized in that: the endless belt material that is with on the frustum sealing surface of valve plate is elected stainless steel as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244030 CN2310897Y (en) | 1997-11-06 | 1997-11-06 | Eccentric flanged butterfly valve with soft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97244030 CN2310897Y (en) | 1997-11-06 | 1997-11-06 | Eccentric flanged butterfly valve with soft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2310897Y true CN2310897Y (en) | 1999-03-17 |
Family
ID=33952868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97244030 Expired - Lifetime CN2310897Y (en) | 1997-11-06 | 1997-11-06 | Eccentric flanged butterfly valve with soft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2310897Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032354A (en) * | 2011-01-12 | 2011-04-27 | 辽宁能发伟业能源科技有限公司 | Axial adjusting device of butterfly valve shaft |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
-
1997
- 1997-11-06 CN CN 97244030 patent/CN2310897Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032354A (en) * | 2011-01-12 | 2011-04-27 | 辽宁能发伟业能源科技有限公司 | Axial adjusting device of butterfly valve shaft |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
| CN102128275B (en) * | 2011-03-18 | 2012-12-26 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |