CN102767628A - Super-low-temperature tri-eccentric butterfly valve - Google Patents
Super-low-temperature tri-eccentric butterfly valve Download PDFInfo
- Publication number
- CN102767628A CN102767628A CN2012102748624A CN201210274862A CN102767628A CN 102767628 A CN102767628 A CN 102767628A CN 2012102748624 A CN2012102748624 A CN 2012102748624A CN 201210274862 A CN201210274862 A CN 201210274862A CN 102767628 A CN102767628 A CN 102767628A
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- valve
- valve body
- center
- butterfly plate
- butterfly
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Abstract
The invention provides a super-low-temperature tri-eccentric butterfly valve which is applied to the field of a valve for stopping and adjusting a medium. The super-low-temperature tri-eccentric butterfly valve comprises a valve body, a valve rod and a butterfly plate, wherein the butterfly plate is fixedly connected with the valve rod; the valve rod is rotatably arranged in a shaft hole on the valve body in a penetrating manner; a sealing ring is arranged on a sealing face of the butterfly plate; and the sealing ring is fixed through a sealing pressing ring and a valve seat is arranged on the inner edge face of the valve body. The super-low-temperature tri-eccentric butterfly valve is characterized in that the upper end of the valve body is fixedly connected with an extension pipe and the valve rod in the valve body is arranged upwards in the extension pipe in a penetrating manner; the center of a sealing section of the valve seat deviates from a Y direction of a rotary center of the butterfly plate; the center of the valve body deviates from an X direction of the rotary center of the butterfly plate; and an eccentric angle is formed between the center of the sealing section of the valve seat and the center of the valve body. With the adoption of a tri-eccentric structure, the friction between the valve seat and the sealing face is reduced to realize that no friction is generated between the valve seat and the sealing face of the butterfly plate in the 90-degree stroke of the valve, so that the possibility of abrading and leaking is removed.
Description
Technical field
The present invention is applied to valve field that medium is ended and regulates, is specially a kind of ultralow temperature three eccentric butterfly valve.
Background technique
At present, the low temperature butterfly valve of domestic use is main with import all; But product price is very expensive; Because the particularity of low temperature environment makes the structure of valve have bigger technical difficulty, the existing reed valve product is owing to the unreasonable sealing material that makes of its structure can't satisfy low temperature environment.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can adapt to low temperature environment, and have the butterfly valve of fine sealing effect.
The technological scheme that realizes above-mentioned purpose is: the ultralow temperature three eccentric butterfly valve, comprise valve body, valve rod and butterfly plate, and said butterfly plate is fixedly connected with valve rod; Said valve rod is arranged in the axis hole on the valve body rotationally, and the sealing surface of said butterfly plate is provided with seal ring, and said seal ring is fixed through the sealing trim ring; The valve body inner edge surface is provided with valve seat; It is characterized in that: said valve body upper end is fixedly connected with extension pipe, and the valve rod in the valve body upwards is placed through in the extension pipe, the sealed section center of said valve seat and the biasing of butterfly plate gyration center Y direction; Said valve body center and the biasing of butterfly plate gyration center directions X, the sealing surface center and the valve body center of said valve seat have eccentric angle.
The sealed section center of valve seat of the present invention and the biasing of butterfly plate gyration center have guaranteed the complete of sealing surface.
Said valve body center and the biasing of butterfly plate gyration center have reduced valve in switching path, the friction between the sealing surface of valve seat and valve plate.
The sealing surface center and the valve body center of valve seat of the present invention have eccentric angle, make the sealing surface of valve seat and valve plate the whole switching path of valve, break away from fully from geometrical shape.The eccentric combination that this is unique had both been utilized cam effect, had eliminated friction again fully, thereby had realized in 90 ° of strokes of valve, did not have friction between the sealing surface on valve seat and the butterfly plate, had removed the possibility that wearing and tearing are revealed.
Valve body of the present invention upper end is fixedly connected with extension pipe, and extension pipe has guaranteed the low temperature of the seal arrangement of valve rod top away from medium, prolongs the working life of seal arrangement.
The sealing surface of valve seat of the present invention is provided with the STL alloy-layer, has improved low temperature resistant, the wear-resisting and antifraying property of sealing surface of seat.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 be among Fig. 1 A-A to sectional view.
Embodiment
Like Fig. 1, shown in 2; The present invention includes valve body 1, valve rod 2 and butterfly plate 3, butterfly plate 3 is fixedly connected with valve rod 2, and valve rod 2 is arranged in the axis hole on the valve body 1 rotationally; The sealing surface of said butterfly plate 3 is provided with seal ring 4; Seal ring 4 is fixing through sealing trim ring 5, and valve body 1 inner edge surface is provided with valve seat 6, and the sealing surface of valve seat 6 is provided with STL alloy-layer 7.
Valve body 1 upper end is fixedly connected with extension pipe 8; Valve rod 1 in the valve body 1 upwards is placed through in the extension pipe 8; The sealed section center 13 of said valve seat 6 and 9 biasings of butterfly plate 3 gyration center Y directions; Said valve body 1 center 10 and 12 biasings of butterfly 3 plate gyration center directions Xs, the sealing surface center 11 and valve body 1 center 10 of said valve seat 6 have eccentric angle.
Claims (2)
1. the ultralow temperature three eccentric butterfly valve comprises valve body, valve rod and butterfly plate, and said butterfly plate is fixedly connected with valve rod; Said valve rod is arranged in the axis hole on the valve body rotationally, and the sealing surface of said butterfly plate is provided with seal ring, and said seal ring is fixed through the sealing trim ring; The valve body inner edge surface is provided with valve seat; It is characterized in that: said valve body upper end is fixedly connected with extension pipe, and the valve rod in the valve body upwards is placed through in the extension pipe, the sealed section center of said valve seat and the biasing of butterfly plate gyration center Y direction; Said valve body center and the biasing of butterfly plate gyration center directions X, the sealing surface center and the valve body center of said valve seat have eccentric angle.
2. ultralow temperature three eccentric butterfly valve according to claim 1 is characterized in that: the sealing surface of valve seat is provided with the STL alloy-layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102748624A CN102767628A (en) | 2012-08-03 | 2012-08-03 | Super-low-temperature tri-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102748624A CN102767628A (en) | 2012-08-03 | 2012-08-03 | Super-low-temperature tri-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102767628A true CN102767628A (en) | 2012-11-07 |
Family
ID=47095138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102748624A Pending CN102767628A (en) | 2012-08-03 | 2012-08-03 | Super-low-temperature tri-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836208A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Small-bore three-eccentric center butterfly valve and purpose thereof |
| CN106151550A (en) * | 2016-08-30 | 2016-11-23 | 盐城宝德冶金设备有限公司 | Raw coke oven gas pipeline shearing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220868A (en) * | 2008-01-25 | 2008-07-16 | 上海富地阀门有限公司 | Hard sealing butterfly valve |
| CN101382198A (en) * | 2008-10-13 | 2009-03-11 | 杭州杭氧工装泵阀有限公司 | Three eccentric metal hard sealed butterfly damper |
| CN101749438A (en) * | 2008-12-16 | 2010-06-23 | 陆平 | Hard-seal butterfly valve |
| CN201802886U (en) * | 2010-07-14 | 2011-04-20 | 成都欣国立低温科技有限公司 | Ultra-low temperature dual-eccentric sealing butterfly valve |
| CN202884061U (en) * | 2012-08-03 | 2013-04-17 | 扬州罗克特种阀门有限公司 | Ultralow temperature three-eccentric center butterfly vale |
-
2012
- 2012-08-03 CN CN2012102748624A patent/CN102767628A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220868A (en) * | 2008-01-25 | 2008-07-16 | 上海富地阀门有限公司 | Hard sealing butterfly valve |
| CN101382198A (en) * | 2008-10-13 | 2009-03-11 | 杭州杭氧工装泵阀有限公司 | Three eccentric metal hard sealed butterfly damper |
| CN101749438A (en) * | 2008-12-16 | 2010-06-23 | 陆平 | Hard-seal butterfly valve |
| CN201802886U (en) * | 2010-07-14 | 2011-04-20 | 成都欣国立低温科技有限公司 | Ultra-low temperature dual-eccentric sealing butterfly valve |
| CN202884061U (en) * | 2012-08-03 | 2013-04-17 | 扬州罗克特种阀门有限公司 | Ultralow temperature three-eccentric center butterfly vale |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836208A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气集团公司 | Small-bore three-eccentric center butterfly valve and purpose thereof |
| CN106151550A (en) * | 2016-08-30 | 2016-11-23 | 盐城宝德冶金设备有限公司 | Raw coke oven gas pipeline shearing device |
| CN106151550B (en) * | 2016-08-30 | 2019-05-24 | 盐城宝德冶金设备有限公司 | Raw coke oven gas pipeline disconnecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121107 |