CN201636347U - Rubber sealing butterfly valve - Google Patents
Rubber sealing butterfly valve Download PDFInfo
- Publication number
- CN201636347U CN201636347U CN2009203168969U CN200920316896U CN201636347U CN 201636347 U CN201636347 U CN 201636347U CN 2009203168969 U CN2009203168969 U CN 2009203168969U CN 200920316896 U CN200920316896 U CN 200920316896U CN 201636347 U CN201636347 U CN 201636347U
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- Prior art keywords
- valve
- self
- type
- sealing
- butterfly valve
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- Expired - Fee Related
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Abstract
The utility model relates to a rubber sealing butterfly valve, which comprises a valve body, a valve plate, a valve shaft and a valve rod, wherein the valve rod is connected with a transmission device. The rubber sealing butterfly valve is characterized in that a self-sealing U-shaped or V-shaped combined sealing ring is arranged on the combined part of the valve body and the valve rod; and a self-lubricating shaft sleeve is arranged in the shaft neck of the valve body. The rubber sealing butterfly valve has the advantages of double sealing, abrasion and corrosion resistance of the sealing surface, and firm contact between a matrix and welding materials, and meets the standard requirements; a whole service life is simulated to complete enough operation cycle times (from 1000 to 10000) under design pressure and an applicable valve rated value; in the whole testing process, the two surfaces are sealed under different pressure difference without leakage; and the self-lubricating shaft sleeve has self-lubricating function, no corrosion, long service life and no harmful influence on water or rubber, and the friction coefficient is smaller than 0.25 when running under the maximum bearing pressure. In addition, the utility model has better sealing property, long service life and convenient operation..
Description
Technical field
The utility model belongs to valve, relates in particular to a kind of rubber seal butterfly valve that can be applied on water treatment system, water service and the conveyance conduit circuit.
Background technique
The rubber seal butterfly valve mainly is used on water treatment system, water service and the conveyance conduit circuit.The easy corrosion of valve plate matrix employing spheroidal graphite cast iron and the wear-resisting property of present rubber seal butterfly valve are poor; Adopt pin to be connected between valve plate and the valve shaft,, make valve plate can't pass through the valve shaft carry-over moment often because of operation causes the pin loose or dislocation; General " O " type sealing adopted of valve sealing element very easily under the effect of pressure, deforms it, influences sealing, and is using on-the-spot being difficult for to change.Because the shortcoming that exists on the said structure, the rubber seal butterfly valve can cause injurious effects to water quality or rubber, so can not satisfy the requirement of water supply industry.
The model utility content
The utility model is in order to overcome deficiency of the prior art, a kind of rubber seal butterfly valve to be provided, realized double seal, can improving its sealing, wear resistance and rotproofness; Improve working life; Avoid water pollution.
The utility model for achieving the above object, be achieved through the following technical solutions, a kind of rubber seal butterfly valve, comprise valve body, valve plate, valve shaft and the valve rod that links to each other with transmission device, it is characterized in that: described valve body and valve rod junction are provided with self-packing U type or V-type combined seal ring, and described valve body axle journal is built-in with self lubrication bearing.
The U type or the V-type seat on described U type or the V-type combined seal ring outer lip limit by O RunddichtringO body with in having constitute, and U type or V-type seat and body constitute whole.
The matrix sealing surface of described valve plate is provided with wear-resisting and the rotproofness layer.
Be connected by the screw thread taper pin between described valve plate and the valve shaft.
Beneficial effect: double seal, sealing surface is wear-resisting, corrosion-resistant, and parent is very firm with contacting of wlding, has reached standard-required.Simulate the number of times (from 1000 times to 10000 times) of finishing enough operation cycle whole working life in design pressure, under suitable valve rating value, in complete test process, the two sides obtains sealing under different pressure differences, does not leak.Self lubrication bearing has self-lubricating function, non-corrosiveness, and working life is longer, and can not cause injurious effects to water quality or rubber, and when turning round under maximum bearing pressure, friction ractor is less than 0.25.Sealability is better; Long service life; Easy to operate.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of combined seal ring.
Embodiment
Below in conjunction with preferred embodiment, details are as follows: a kind of rubber seal butterfly valve to embodiment that foundation the utility model provides, comprise valve body 1, valve plate 2, valve shaft 3 and the valve rod 4 that links to each other with the transmission device (not shown), described valve body and valve rod junction are provided with self-packing U type or V-type combined seal ring 5, described valve body axle journal is built-in with self lubrication bearing, and the matrix sealing surface of described valve plate is provided with wear-resisting and the rotproofness layer.Be connected by the screw thread taper pin between described valve plate and the valve shaft.The U type or the V-type seat 5-2 on described U type or the V-type combined seal ring outer lip limit by O RunddichtringO body 5-1 with in having constitute, and U type or V-type seat and body constitute whole.The matrix sealing surface of described valve plate is provided with wear-resisting and rotproofness layer 6.
Have and have self-packing U type or V-type combined seal ring passing valve rod place design that valve body links to each other with transmission device, under pressure, can realize double seal, make sealability better, but very little and longer service life rubs.Seal ring need not on pipeline valve to be dismantled using on-the-spot also easily dismounting.Valve plate adopts composite material to make promptly, and the spheroidal graphite cast iron matrix sealing surface of valve plate is the stainless steel material with the wear-resisting and rotproofness of supersonic speed surfacing.Sealing surface is wear-resisting, corrosion-resistant, and parent is very firm with contacting of wlding, and having reached standard-required promptly exists: design pressure, the number of times (from 1000 times to 10000 times) of enough operation cycle is finished in simulation whole working life under the valve rating value that is suitable for, and in complete test process, the two sides all should seal under different pressure differences, does not leak; Any part must not damage.Also guaranteed to satisfy the stainless composition requirement that is equal to simultaneously.Self lubrication bearing is installed and is used in the valve body axle journal.It has the effect that the protection valve rod is avoided the lateral thrust of operating process machinery generation; Material adopts the stainless polytetrafluoroethylene backrest of F4 band SS316, and self lubrication bearing has self-lubricating function, non-corrosiveness, and working life is longer, and can not cause injurious effects to water quality or rubber, and when turning round under maximum bearing pressure, friction ractor is less than 0.25.Adopt corrosion resistant stainless steel screw thread taper pin to be connected between valve plate and the valve shaft, and fix, can not become flexible, come off because of operation makes pin and valve shaft with nut.
The design of rubber seal butterfly valve is the standard according to AWWA ANSI/AWWAC504 fully; On water treatment system, water service and the conveyance conduit circuit.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of the technical solution of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. a rubber seal butterfly valve comprises valve body, valve plate, valve shaft and the valve rod that links to each other with transmission device, and it is characterized in that: described valve body and valve rod junction are provided with self-packing U type or V-type combined seal ring, and described valve body axle journal is built-in with self lubrication bearing.
2. rubber seal butterfly valve according to claim 1 is characterized in that: the U type or the V-type seat on described U type or the V-type combined seal ring outer lip limit by O RunddichtringO body with in having constitute, and U type or V-type seat and body constitute whole.
3. rubber seal butterfly valve according to claim 1 is characterized in that: the matrix sealing surface of described valve plate is provided with wear-resisting and the rotproofness layer.
4. rubber seal butterfly valve according to claim 1 is characterized in that: be connected by the screw thread taper pin between described valve plate and the valve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203168969U CN201636347U (en) | 2009-12-09 | 2009-12-09 | Rubber sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203168969U CN201636347U (en) | 2009-12-09 | 2009-12-09 | Rubber sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636347U true CN201636347U (en) | 2010-11-17 |
Family
ID=43080839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203168969U Expired - Fee Related CN201636347U (en) | 2009-12-09 | 2009-12-09 | Rubber sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN106065884A (en) * | 2016-08-19 | 2016-11-02 | 龙工（上海）精工液压有限公司 | Effectively reduce the structure of foot valve fore-set abrasion |
-
2009
- 2009-12-09 CN CN2009203168969U patent/CN201636347U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405898A (en) * | 2014-11-24 | 2015-03-11 | 河南煜达阀门制造有限公司 | Low-maintenance-rate triple-eccentric butterfly valve |
| CN106065884A (en) * | 2016-08-19 | 2016-11-02 | 龙工（上海）精工液压有限公司 | Effectively reduce the structure of foot valve fore-set abrasion |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20111209 |