CN201902575U - Double eccentric butterfly valve with composite butterfly plate seal ring - Google Patents
Double eccentric butterfly valve with composite butterfly plate seal ring Download PDFInfo
- Publication number
- CN201902575U CN201902575U CN201020611479XU CN201020611479U CN201902575U CN 201902575 U CN201902575 U CN 201902575U CN 201020611479X U CN201020611479X U CN 201020611479XU CN 201020611479 U CN201020611479 U CN 201020611479U CN 201902575 U CN201902575 U CN 201902575U
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- CN
- China
- Prior art keywords
- seal ring
- valve
- butterfly
- butterfly plate
- ring
- 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 discloses a double eccentric butterfly valve with a composite butterfly plate seal ring. The double eccentric butterfly valve comprises a valve body, a valve seat of an inner cavity of the valve body, and a valve shaft arranged on the valve body and communicated with the inner cavity of the valve body, wherein a butterfly plate is connected to the end of the valve shaft in the inner cavity of the valve body, a valve body seal ring is embedded on the valve seat, a seal ring groove is formed on the butterfly plate, the butterfly plate seal ring is embedded in the seal ring groove, and a ring-shaped pressure plate is arranged outside the seal ring groove on the butterfly plate and connected with the seal ring groove through a screw. The double eccentric butterfly valve is characterized in that the butterfly plate seal ring is formed by N nonmetallic seal rings taking the shape of circular ring sheets and N+1 metallic seal rings taking the shape of circular ring sheets which are overlapped and compounded in the axial direction in sequence, the inner diameters of the nonmetallic seal rings are identical to those of the metallic seal rings, and N ranges from two to six. When the butterfly plate seal ring is tightly clamped by the pressure plate, the nonmetallic seal rings can expand a little in the radial direction from the metallic seal rings, so that the composite butterfly plate seal ring has not only such advantages of the metallic seal rings as high strength and longer service life, but also the advantage of good sealing property of the nonmetallic seal rings.
Description
Technical field
The utility model relates to a kind of double eccentric butterfly valve, particularly relates to a kind of butterfly plate seal ring of double eccentric butterfly valve.
Background technique
The butterfly plate seal ring of existing double eccentric butterfly valve has metallic material to make, and also useful nonmetal sealing material is made.Longer with butterfly plate seal ring intensity height, working life that metallic material is made, but sealability is bad; The butterfly plate sealing ring tightness made from nonmetal sealing material can be good, but intensity is lower, working life is shorter.So it is bad with the butterfly plate seal ring combination property that homogenous material is made.
The model utility content
The purpose of this utility model is in order to overcome above-mentioned deficiency, to propose a kind of double eccentric butterfly valve that adopts metal-nonmetal compound butterfly plate seal ring, realizes the combination property of long, good seal performance of intensity height, working life.
The technological scheme that the utility model solution prior art deficiency is taked is: a kind of compound butterfly plate seal ring double eccentric butterfly valve, comprise valve body, the valve seat of body cavity, the valve shaft that communicates with body cavity on the valve body, valve shaft is connected with butterfly plate at an end of body cavity, be embedded with valve seals on the valve seat, seal groove is arranged on the butterfly plate, seal groove is embedded with the butterfly plate seal ring, the annular pressing plate that the outer useful screw of seal groove on the butterfly plate links to each other, it is characterized in that: the butterfly plate seal ring is by the identical nonmetal seal ring of N sheet toroidal ring piece shape of internal diameter and N+1 sheet toroidal ring piece shape metal o-ring is overlapping successively vertically is composited N=2～6.
Preferred version is N=3.
Wherein metal o-ring can be to make with steel plate, corrosion resistant plate or copper coin etc.; Nonmetal seal ring can be to make with rubber plate, flexible graphite plate, asbestos slate, asbestos packing sheet or plastic board etc.
During use, the butterfly plate seal ring is clamped in the butterfly plate seal groove with pressing plate, the nonmetal seal ring in the tight back of clamping can between the metal o-ring to expansion radially some, make this butterfly plate seal ring not only have long advantage but also have the advantage of the good seal performance of nonmetal seal ring in intensity height, working life of metal o-ring, so good combination property of the present utility model.
The beneficial effects of the utility model are: adopt metal-nonmetal compound butterfly plate seal ring both to have the intensity height of metal o-ring, the advantage that grow working life, so the advantage that has the good seal performance of nonmetal seal ring again is good combination property of the present utility model.
Description of drawings
Fig. 1 is a main cross-sectional schematic of the present utility model;
Fig. 2 is the schematic side view of Fig. 1;
Fig. 3 is the I place enlarged diagram of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In Fig. 1～3, compound butterfly plate seal ring double eccentric butterfly valve has valve body 1, body cavity has valve seat 2, the valve shaft 3 that communicates with body cavity is arranged on the valve body, valve shaft is connected with butterfly plate 4 at an end of body cavity, be embedded with valve seals 5 on the valve seat, seal groove 6 is arranged on the butterfly plate, seal groove is embedded with butterfly plate seal ring 7, the annular pressing plate 8 that the outer useful screw of seal groove on the butterfly plate links to each other, the butterfly plate seal ring is by the identical nonmetal seal ring of N sheet toroidal ring piece shape of internal diameter and N+1 sheet toroidal ring piece shape metal o-ring is overlapping successively vertically is composited, N is 2～6, and preferred version is by the internal diameter identical nonmetal seal ring 10 of 3 toroidal ring piece shapes and 4 overlapping successively vertically being composited of toroidal ring piece shape metal o-ring 9.
Above-mentioned metal o-ring can be the toroidal ring piece shape metal o-ring made from steel plate, corrosion resistant plate or copper coin etc., and nonmetal seal ring can be the nonmetal seal ring made from rubber plate, flexible graphite plate, asbestos slate, asbestos packing sheet or plastic board etc. of toroidal ring piece shape.
Claims (3)
1. compound butterfly plate seal ring double eccentric butterfly valve, comprise the valve shaft that communicates with body cavity on the valve seat, valve body of valve body, body cavity, valve shaft is connected with butterfly plate at an end of body cavity, be embedded with valve seals on the valve seat, seal groove is arranged on the butterfly plate, seal groove is embedded with the butterfly plate seal ring, the annular pressing plate that the outer useful screw of seal groove on the butterfly plate links to each other, it is characterized in that: the butterfly plate seal ring is by the identical nonmetal seal ring of N sheet toroidal ring piece shape of internal diameter and N+1 sheet toroidal ring piece shape metal o-ring is overlapping successively vertically is composited N=2～6.
2. compound butterfly plate seal ring double eccentric butterfly valve according to claim 1 is characterized in that: described N=3.
3. compound butterfly plate seal ring double eccentric butterfly valve according to claim 1, it is characterized in that: described above-mentioned metal o-ring is the toroidal ring piece shape metal o-ring made from steel plate, corrosion resistant plate or copper coin etc., and nonmetal seal ring is the nonmetal seal ring made from rubber plate, flexible graphite plate, asbestos slate, asbestos packing sheet or plastic board etc. of toroidal ring piece shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020611479XU CN201902575U (en) | 2010-11-17 | 2010-11-17 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020611479XU CN201902575U (en) | 2010-11-17 | 2010-11-17 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201902575U true CN201902575U (en) | 2011-07-20 |
Family
ID=44273168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020611479XU Expired - Fee Related CN201902575U (en) | 2010-11-17 | 2010-11-17 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201902575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620000A (en) * | 2012-04-16 | 2012-08-01 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN109243630A (en) * | 2018-10-19 | 2019-01-18 | 江苏神通阀门股份有限公司 | A kind of containment isolating valve ring structure |
-
2010
- 2010-11-17 CN CN201020611479XU patent/CN201902575U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620000A (en) * | 2012-04-16 | 2012-08-01 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN102620000B (en) * | 2012-04-16 | 2014-02-26 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
| CN109243630A (en) * | 2018-10-19 | 2019-01-18 | 江苏神通阀门股份有限公司 | A kind of containment isolating valve ring structure |
| CN109243630B (en) * | 2018-10-19 | 2024-05-10 | 江苏神通阀门股份有限公司 | Containment isolation valve sealing ring structure |
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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: 20110720 Termination date: 20111117 |