CN201487252U - Sealing pair of double-eccentric butterfly valve - Google Patents
Sealing pair of double-eccentric butterfly valve Download PDFInfo
- Publication number
- CN201487252U CN201487252U CN2009201887568U CN200920188756U CN201487252U CN 201487252 U CN201487252 U CN 201487252U CN 2009201887568 U CN2009201887568 U CN 2009201887568U CN 200920188756 U CN200920188756 U CN 200920188756U CN 201487252 U CN201487252 U CN 201487252U
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- CN
- China
- Prior art keywords
- valve
- stainless steel
- seal ring
- double
- eccentric butterfly
- 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
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Abstract
The utility model relates to a sealing pair of a double-eccentric butterfly valve, which comprises a conical stainless seal ring arranged on the excircle of a valve plate, a rubber seal ring arranged on the valve seat of a valve, and a pressing sleeve; the stainless steel seal ring made of a stainless steel plate is blanked, rolled and finely processed, and pressed and fixedly welded on the prefabricated excircle of the valve plate; the valve seat in the valve is provided with a groove; the rubber seal ring is arranged in the groove, and pressed by the pressing sleeve; and the pressing sleeve is fixed on the valve seat through a screw. In the sealing pair of the double-eccentric butterfly valve, the stainless steel seal ring blanked, rolled and finely processed by the stainless steel plate, and pressed and fixedly welded on the prefabricated excircle of the valve plate, and the rubber seal ring fixed by the pressing sleeve form a valve. The sealing pair of the double-eccentric butterfly valve has the advantages of fewer material, low processing cost, level and smooth sealing surface, corrosion and wear resistance, no falling off, good sealing effect and longer service life.
Description
Technical field
The utility model relates to a kind of component of valve, especially refers to a kind of by casing pressure and be weldingly fixed on the valve plate cylindrical and the sealing pair that is located at the double eccentric butterfly valve that the O-ring seal on the valve seat forms.
Back of the body technology scape
Traditional butterfly valve especially double eccentric butterfly valve all has valve body, and having in the valve body with the eccentric shaft is center valve plate that rotates and the valve seat that is located in the valve body, is provided with sealing pair between valve seat and the valve plate.Sealing pair is formed with the metal o-ring that is fixed on the valve plate cylindrical by embedding O-ring seal in the valve seat that is installed in valve body.In the prior art, the seal ring of some butterfly valve is the metal o-ring made from copper or stainless steel.Metal o-ring all is to be installed on the boss of valve plate usually with locating, and the external diameter of valve plate boss and the internal diameter of metal o-ring must precision-fit.For metal o-ring being fixed on the boss of valve plate, need the screw positioning and fixing usually.Lost efficacy for the junction plane seepage that prevents metal o-ring and valve plate boss makes valve seal, also needed to install gasket seal.This seal ring must be made before installing in advance, must lathe, so materials be more from the thicker next annulus of steel plate cutting of monoblock during making again, and processing charges is bigger, and sealability is unsatisfactory, and the overall cost of product is also high.The technology that also has be on the valve plate metal o-ring directly with copper or stainless steel built-up welding on the valve plate cylindrical, the material consumption of this technique for overlaying is more, and machining allowance is big, so processing charges is higher unavoidably.So it is necessary that the sealing pair structural type of double eccentric butterfly valve is reformed.
The model utility content
The purpose of this utility model is: in order to overcome the deficiency of above-mentioned manufacturing technology, it is less to propose a kind of materials, processing and fabricating is easy, with the stainless steel sealing ring of the fixing double eccentric butterfly valve plate of welding after the stainless steel materials roll forming and the composition of the O-ring seal on the valve seat sealing pair.
The technological scheme that the utility model solves the problems of the technologies described above is: the sealing pair of double eccentric butterfly valve by the cone-shaped stainless steel seal ring that is located at the valve plate cylindrical, be located in the valve body O-ring seal on the valve seat and gland is formed, described stainless steel sealing ring is to be weldingly fixed on the valve plate cylindrical of making in advance through casing pressure after blanking, the roll forming fine finishing by stainless steel materials, valve seat in the described valve body is provided with groove, be provided with O-ring seal in the groove, O-ring seal is pushed down with gland, and gland is screwed on valve seat.
The sealing pair of the utility model double eccentric butterfly valve is owing to the employing stainless steel materials, and with roll forming, the meticulous processing and fabricating of process is weldingly fixed on the valve plate cylindrical, forms with the O-ring seal of fixing with gland.Because materials are less, and processing charges is low, smooth smooth, the corrosion resistant, wear-resisting of sealing surface, never drop-off, so good sealing effect, long service life.
Description of drawings
Fig. 1 is a schematic representation of the present utility model;
Fig. 2 is the utility model key plan of (analyse and observe the side) in butterfly valve;
Each title and mark among the figure: 1. valve seat, 2. valve plate, 3. O-ring seal, 4. stainless steel sealing ring, 5. gland.
Embodiment
As depicted in figs. 1 and 2, the sealing pair of double eccentric butterfly valve comprises the cone-shaped stainless steel seal ring 4 that is located at the valve plate cylindrical, be located at O-ring seal 3 and fixing gland 5 on the valve body and valve seat 1, and stainless steel sealing ring 4 is to be weldingly fixed on valve plate 2 cylindricals of making in advance by the annulus casing pressure of stainless steel materials through the slightly taper after the blanking fine finishing.The valve seat 1 of described valve body is provided with groove, is provided with O-ring seal 3 in the groove, and O-ring seal 3 usefulness glands 5 are pushed down, and gland 5 is screwed on valve seat 1.When valve closing, the stainless steel sealing ring 4 on valve plate 2 cylindricals is close to the O-ring seal 3 on the valve seat 1, and water or other liquid mediums can not pass through, thereby can play good sealing effect.
Claims (1)
1. the sealing pair of double eccentric butterfly valve is made up of the cone-shaped stainless steel seal ring (4) that is located at valve plate (2) cylindrical, the O-ring seal (3), the gland (5) that are located on the valve seat (1), it is characterized in that described stainless steel sealing ring (4) be by stainless steel materials through casing pressure after blanking, the roll forming fine finishing, be weldingly fixed on valve plate (2) cylindrical of making in advance, described valve seat (1) is provided with groove, groove is embedded with O-ring seal (3), described O-ring seal (3) is pushed down with gland (5), and described gland (5) is screwed on valve seat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201887568U CN201487252U (en) | 2009-08-22 | 2009-08-22 | Sealing pair of double-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201887568U CN201487252U (en) | 2009-08-22 | 2009-08-22 | Sealing pair of double-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487252U true CN201487252U (en) | 2010-05-26 |
Family
ID=42426131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201887568U Expired - Fee Related CN201487252U (en) | 2009-08-22 | 2009-08-22 | Sealing pair of double-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487252U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022552A (en) * | 2010-12-03 | 2011-04-20 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN104405907A (en) * | 2014-12-08 | 2015-03-11 | 江苏明江阀业有限公司 | Valve seat of double-clip type butterfly valve for coal cinder pipeline |
| CN105090543A (en) * | 2014-04-26 | 2015-11-25 | 费希尔久安输配设备(成都)有限公司 | Protection assembly of valve seat sealing pad and pressure regulation device |
-
2009
- 2009-08-22 CN CN2009201887568U patent/CN201487252U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022552A (en) * | 2010-12-03 | 2011-04-20 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN102022552B (en) * | 2010-12-03 | 2012-08-08 | 浙江石化阀门有限公司 | Bidirectional sealing frictionless butterfly valve |
| CN105090543A (en) * | 2014-04-26 | 2015-11-25 | 费希尔久安输配设备(成都)有限公司 | Protection assembly of valve seat sealing pad and pressure regulation device |
| CN104405907A (en) * | 2014-12-08 | 2015-03-11 | 江苏明江阀业有限公司 | Valve seat of double-clip type butterfly valve for coal cinder pipeline |
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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: 20100526 Termination date: 20140822 |
|
| EXPY | Termination of patent right or utility model |