CN201293112Y - 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
- CN201293112Y CN201293112Y CNU200820218915XU CN200820218915U CN201293112Y CN 201293112 Y CN201293112 Y CN 201293112Y CN U200820218915X U CNU200820218915X U CN U200820218915XU CN 200820218915 U CN200820218915 U CN 200820218915U CN 201293112 Y CN201293112 Y CN 201293112Y
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- China
- Prior art keywords
- valve
- butterfly
- butterfly plate
- plate
- seal ring
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- Expired - Fee Related
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Abstract
The utility model relates to a double-eccentric butterfly valve with a composite butterfly plate sealing ring, which is provided with a valve body, wherein a valve seat is arranged in a valve body inner cavity, and a valve shaft communicated with the valve body inner cavity is arranged on the valve body and connected with a butterfly plate at one end of the valve body inner cavity; a valve body sealing ring is embedded in the valve seat, a sealing ring groove is arranged on the butterfly plate, and a butterfly plate sealing ring is embedded in the sealing ring groove; a circular pressure plate connected by screws is arranged outside the sealing ring groove of the butterfly plate, and the butterfly plate sealing ring is formed by axially sequentially overlapping and compounding N circular sheet non-metal sealing rings and N+1 circular sheet metal sealing rings, wherein the non-metal sealing rings and the metal sealing rings have identical inside diameters, and N is equal to 2 to 12. The double-eccentric butterfly valve is tightly clamped in the butterfly plate sealing ring by the pressure plate, and the non-metal sealing rings can slightly expand among the metal sealing rings in the radial direction so that the utility model has the advantages that the metal sealing rings have high strength and long service life, and the non-metal sealing rings have good sealing performance, thereby the utility model has favorable comprehensive performance.
Description
Technical field
The utility model relates to the butterfly plate seal ring of a kind of double eccentric butterfly valve, particularly a kind of double eccentric butterfly valve.
Background technique
Double eccentric butterfly valve has valve body, body cavity has valve seat, the valve shaft that communicates with body cavity is arranged 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, double eccentric butterfly valve butterfly plate seal ring and valve seals have metal-metal, the sealing pair of metal-nonmetal or nonmetal-nonmetal combination, above-mentioned metal is the metal that can manufacture the butterfly valve seal circle, the metal that can manufacture the butterfly valve seal circle can be a steel, stainless steel or copper, nonmetal is can manufacture the butterfly valve seal circle nonmetal, can manufacture the nonmetal of butterfly valve seal circle can be rubber, Expanded graphite, asbestos slate, asbestos packing sheet or plastics, the butterfly plate seal ring has metallic material or nonmetal sealing material to make, the butterfly plate seal ring intensity height made from metallic material, working life is longer, 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, in the prior art, there is not the double eccentric butterfly valve of the good combination property of butterfly plate seal ring.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned deficiency, to propose a kind of compound butterfly plate seal ring double eccentric butterfly valve of butterfly plate seal ring good combination property.
The utility model is realized with the following method.
Compound butterfly plate seal ring double eccentric butterfly valve has valve body, body cavity has valve seat, the valve shaft that communicates with body cavity is arranged 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, 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=2～12.
Butterfly plate seal ring of the present utility model 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, metal o-ring can be to use steel plate, corrosion resistant plate or copper coin etc. are made, nonmetal seal ring can be to use rubber plate, flexible graphite plate, asbestos slate, asbestos packing sheet or plastic board etc. are made, during use, the utility model 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 the utility model promptly have the intensity height of metal o-ring, working life, long advantage had the advantage of the good seal performance of nonmetal seal ring again, so good combination property of the present utility model.
Below in conjunction with accompanying drawing, the utility model is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of compound butterfly plate seal ring double eccentric butterfly valve of invention scheme proposition 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
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, butterfly plate seal ring are by by the internal diameter identical nonmetal seal ring 10 of 4 toroidal ring piece shapes and 5 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, valve body is arranged, body cavity has valve seat, the valve shaft that communicates with body cavity is arranged 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=2～12.
2. by the described compound butterfly plate seal ring double eccentric butterfly valve of claim 1, it is characterized in that: described N=4.
3. by claim 1 or described compound butterfly plate seal ring double eccentric butterfly valve, 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 |
|---|---|---|---|
| CNU200820218915XU CN201293112Y (en) | 2008-11-06 | 2008-11-06 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820218915XU CN201293112Y (en) | 2008-11-06 | 2008-11-06 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293112Y true CN201293112Y (en) | 2009-08-19 |
Family
ID=41006589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820218915XU Expired - Fee Related CN201293112Y (en) | 2008-11-06 | 2008-11-06 | Double eccentric butterfly valve with composite butterfly plate seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293112Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
| CN103629374A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Butterfly plate for three-eccentric center butterfly valve |
-
2008
- 2008-11-06 CN CNU200820218915XU patent/CN201293112Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252105A (en) * | 2011-07-14 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Seal structure of three-eccentric cut-off butterfly valve for blast furnace |
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
| CN103629374A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Butterfly plate for three-eccentric center butterfly valve |
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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: 20090819 Termination date: 20121106 |