CN2881241Y - Biecentric bidirection sealing butterfly valve - Google Patents
Biecentric bidirection sealing butterfly valve Download PDFInfo
- Publication number
- CN2881241Y CN2881241Y CN 200520117350 CN200520117350U CN2881241Y CN 2881241 Y CN2881241 Y CN 2881241Y CN 200520117350 CN200520117350 CN 200520117350 CN 200520117350 U CN200520117350 U CN 200520117350U CN 2881241 Y CN2881241 Y CN 2881241Y
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- Prior art keywords
- valve
- sealing
- valve body
- valve plate
- cylinder surface
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- Expired - Fee Related
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Abstract
The utility model relates to a bieccentric bidirection sealing butterfly valve, which comprises a circular valve body; wherein, a valve seat is positioned at the inner wall of the valve body or around a valve plate; a superior and an inferior valve stem are arranged inside the valve body and connected with the valve plate. The utility model is characterized in that: the circumference of the valve plate or the inner wall of the valve body consists of arc surface, cylinder surface and circular arc surface; the cylinder surface is matched with the inner hole or outerwall of the valve seat made of nonmetal material; the center part of the circumference of the valve plate or the inner wall of the valve body of the art scheme is a cylinder surface (changing the circular conical surface of prior art) and both side end faces are connected through a circular arc. When the valve is closed and either side of the sealing cylinder surface of the metal valve plate is filled with pressure medium, the sealing effect of the valve will not changed by axial displacement from the valve palate distortion because the relative displacement between the metal sealing cylinder surface and the nonmetal valve seat causes no change of sealing pressure, thereby reaching the goal of meeting set pressure requirement by both sides pressure sealing.
Description
Technical field
The utility model relates to valve, particularly relates to two eccentric two-way seal butterfly valves, is applicable to various water, oil, gas pipeline controls.
Background technique
In all kinds of water pipes that oil, chemical industry, pharmacy, food etc. are produced, oil pipe, tracheae, be extensive use of butterfly valve.The main structure of butterfly valve is a valve body, is connected the valve seat of valve interior wall or valve plate periphery, and valve rod is installed in the valve body, and valve rod connects valve plate, is metal valve plate and nonmetal valve seat so form the sealing pair of butterfly valve.And the sealing surface of existing resultant metal valve plate periphery or valve interior wall is shaped as conical surface, and the both sides end face is sentenced circular arc and is connected.This butterfly valve if add pressure medium in big end one side of metallic seal conical surface, makes valve plate axial displacement and seals reinforcement under the situation of cutting out, and reaches the authorized pressure requirement; If but, also make valve plate produce axial displacement from adding pressure medium in metallic seal conical surface small end one side, but this displacement but makes sealing weaken, and causes seal failure, and therefore, existing valve is referred to as the one-way sealing butterfly valve.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming that prior art exists, provide a kind of valve under the situation of closing, no matter the either side to metallic sealing section adds pressure medium, impregnable pair of eccentric two-way seal butterfly valve of the sealing effect of metallic sealing section and valve seat.
The technological scheme of the two eccentric two-way seal butterfly valves of the utility model is: the valve body that a circle is arranged, at valve interior wall or valve plate periphery valve seat is installed, install in the valve body, lower valve rod, upper and lower valve rod connects valve plate, it is characterized in that the periphery of valve plate or the inwall of valve body are that arc shaped surface, cylndrical surface and arc surface are formed, matches with valve seat endoporus or outer wall that nonmetallic material are made in the cylndrical surface.The valve plate periphery core of the technical program or the inwall of valve body are cylndrical surface (having changed the conical surface of prior art), and the both sides end face is sentenced circular arc and is connected.This valve is under the situation of closing, no matter any side adds pressure medium in the metallic seal cylndrical surface, its sealing effect does not change because of the axial displacement that the valve plate distortion produces.This is because the relative displacement of metallic seal cylndrical surface and nonmetal valve seat does not cause the change of actual seal pressure, thereby has realized that bilateral wiper seal can reach the purpose of authorized pressure requirement.
The valve seat of the two eccentric two-way seal butterfly valves of the utility model is that rubber material is made.
Description of drawings
Fig. 1 is the two eccentric two-way seal butterfly valve metallic sealing section structural representations on the valve plate periphery of the utility model;
Fig. 2 is that the two eccentric two-way seal butterfly valve A of the utility model are to schematic representation;
Fig. 3 is the valve plate periphery enlarged diagram of the two eccentric two-way seal butterfly valves of the utility model;
Fig. 4 is that the two eccentric two-way seal butterfly valve metallic sealing sections of the utility model are at the valve interior wall structural representation;
Fig. 5 is the valve interior wall enlarged diagram of the two eccentric two-way seal butterfly valves of the utility model.
Embodiment
The utility model discloses a kind of pair of eccentric two-way seal butterfly valve, as Fig. 1, shown in Figure 2, the valve body 3 that a circle is arranged, at valve interior wall or valve plate periphery valve seat 5 is installed, can valve seat be fixed on valve interior wall or valve plate periphery by fastening piece, install valve rod 1 and lower valve rod 11 in the valve body, Sealing 4 and Gland 2 are arranged between valve rod and the valve body, and end cap 12 etc., on, connect valve plate 9 in the middle of the lower valve rod, fixing straight pin 10 is arranged, its major technology is characterised in that (as Fig. 1, Fig. 3, Fig. 4, shown in Figure 5) periphery of valve plate 9 or the inwall of valve body 3 be arc shaped surfaces 6,6 ', cylndrical surface 7,7 ' and arc surface 8,8 ' three parts are formed, by cylndrical surface 7,7 ' match with valve seat 5 endoporus or outer wall that nonmetallic material are made.The material of its valve seat 5 mainly is that rubber material is made.Because the sealing pair after this improvement changes the sealing surface shape of original metal sealing surface of valve plate or valve interior wall the cylndrical surface of a proper width into by a conical surface, the both sides end face is sentenced circular arc and is connected.This valve is under the situation of closing, no matter any side adds pressure medium in the inner wall sealing cylndrical surface of metal valve plate or valve body, its sealing effect does not change because of the axial displacement that the valve plate distortion produces.This is because the relative displacement of the inner wall sealing cylndrical surface of metal valve plate or valve body and nonmetal valve seat does not cause the change of actual seal pressure.Thereby realized that bilateral wiper seal can reach the purpose of authorized pressure requirement.Because of this valve also is two eccentric structures, therefore be named as two eccentric two-way seal butterfly valves.
Claims (2)
1, two eccentric two-way seal butterfly valves, the valve body (3) that a circle is arranged, at valve interior wall or valve plate periphery valve seat (5) is installed, install in the valve body, lower valve rod (1,11), upper and lower valve rod connects valve plate (9), it is characterized in that the periphery of valve plate (9) or the inwall of valve body (3) are that arc shaped surface (6,6 '), cylndrical surface (7,7 ') and arc surface (8,8 ') are formed, match with valve seat (5) endoporus or outer wall that nonmetallic material are made cylndrical surface (7,7 ').
2, as claimed in claim 1 pair of eccentric two-way seal butterfly valve is characterized in that valve seat (5) is that rubber material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117350 CN2881241Y (en) | 2005-12-16 | 2005-12-16 | Biecentric bidirection sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117350 CN2881241Y (en) | 2005-12-16 | 2005-12-16 | Biecentric bidirection sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881241Y true CN2881241Y (en) | 2007-03-21 |
Family
ID=37881080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520117350 Expired - Fee Related CN2881241Y (en) | 2005-12-16 | 2005-12-16 | Biecentric bidirection sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881241Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278487A (en) * | 2011-06-22 | 2011-12-14 | 付永强 | Dual-seal butterfly valve with double valve plates |
| CN105090539A (en) * | 2015-09-17 | 2015-11-25 | 上海沪东造船阀门有限公司 | Two-way-sealed double-eccentric butterfly valve |
| CN108167455A (en) * | 2018-02-11 | 2018-06-15 | 上海阀门五厂有限公司 | A kind of bidirectional sealed butterfly valve using rubber valve seat structure |
-
2005
- 2005-12-16 CN CN 200520117350 patent/CN2881241Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278487A (en) * | 2011-06-22 | 2011-12-14 | 付永强 | Dual-seal butterfly valve with double valve plates |
| CN105090539A (en) * | 2015-09-17 | 2015-11-25 | 上海沪东造船阀门有限公司 | Two-way-sealed double-eccentric butterfly valve |
| CN108167455A (en) * | 2018-02-11 | 2018-06-15 | 上海阀门五厂有限公司 | A kind of bidirectional sealed butterfly valve using rubber valve seat 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: 20070321 Termination date: 20111216 |