CN1297769C - Metal butterfly valve for sealing - Google Patents
Metal butterfly valve for sealing Download PDFInfo
- Publication number
- CN1297769C CN1297769C CNB031337732A CN03133773A CN1297769C CN 1297769 C CN1297769 C CN 1297769C CN B031337732 A CNB031337732 A CN B031337732A CN 03133773 A CN03133773 A CN 03133773A CN 1297769 C CN1297769 C CN 1297769C
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- sealing surface
- butterfly valve
- center
- 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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- Lift Valve (AREA)
Abstract
The present invention discloses a metal seal butterfly valve which relates to a butterfly valve. In order to mainly solve the problems of the existing butterfly valve of laborious opening, easy wear, poor sealing performance, etc., the metal seal butterfly valve is designed. The metal seal butterfly valve mainly comprises a valve body, a valve seat, a valve rod, a valve plate, a support frame, a sealing ring, etc., wherein the sealing surface of the valve plate is deflected from the rotary center of the valve plate, the rotary center of the valve plate is deflected from the center of the valve body, and the center of the involute-shaped sealing surface of the valve plate is deflected from the rotary center of the valve plate. Both sides of the sealing surface of the valve seat made of stainless steel are respectively provided with an annular groove structure of 30 DEG and an oblique angle of 45 DEG. The metal seal butterfly valve has the advantages of labor-saving opening, attrition reduction and good sealing performance.
Description
Technical field: the present invention relates to a kind of butterfly valve.
Background technique: existing reed valve comprises double eccentric butterfly valve etc., and most efforts of opening are easy to wear, and poor sealing performance adopts nonmetallic material to make, and intensity difference is not wear-resisting, non-refractory, and application area is little.
Summary of the invention: it is laborsaving to the objective of the invention is to develop a kind of unlatching, reduces wear, and good seal performance, the intensity height, corrosion-resistant, the metallic sealing butterfly valve of applied range.
The object of the present invention is achieved like this: it comprises valve body, valve seat is contained on the valve body, valve rod is contained in the valve body, seal with seal ring between valve rod and the valve body, valve plate is contained on the valve rod, and the upper end that support is contained in valve body is connected with drive unit, and the sealing surface of valve plate and the rotating center of valve plate depart from, the rotating center of valve plate and the misalignment of valve body, the center of valve plate involute shape sealing surface and valve plate rotating center depart from here.
Be further to improve sealing effect, the both sides of the sealing surface of the valve seat of making of stainless steel 4 are respectively 30 degree ring channel structures and 45 degree oblique angles.
Advantage of the present invention is because center and its rotating center of valve plate involute shape sealing surface depart from, the movement locus of sealing surface is the bidirectional involute track during switch, and it is tight more to close Shi Yueguan, good seal performance, open laborsaving, reduce wear, the special construction of sealing surface of seat both sides makes its sealing effect better in addition, and intensity height, high temperature resistant, corrosion-resistant, applied range.
Description of drawings: Fig. 1 is a whole generalized section of the present invention:
Fig. 2 is the center of valve plate involute shape sealing surface and the schematic representation that the valve plate rotating center departs from;
Fig. 3 is the valve base sealing position generalized section of amplifying.
Embodiment: with reference to Fig. 1, valve seat 4 is contained on the valve body 1, valve rod 3 is contained in the valve body, seal with seal ring 5 between valve rod and the valve body, valve plate 2 is contained on the valve rod, and the upper end that support 6 is contained in valve body is connected with drive unit, and the sealing surface of valve plate and the rotating center of valve plate depart from, the rotating center of valve plate and the misalignment of valve body, the center and the valve plate rotating center of valve plate involute shape sealing surface depart from (with reference to Fig. 2); The both sides of the sealing surface of the valve seat of making of stainless steel 4 are respectively 30 degree ring channel structures and 45 degree oblique angles (with reference to Fig. 3).
Claims (2)
1. metallic sealing butterfly valve, comprise valve body (1), valve seat (4), valve rod (3), valve plate (2), support (6), seal ring (5), the sealing surface of valve plate and the rotating center of valve plate depart from, the rotating center of valve plate and the misalignment of valve body is characterized in that the center and the valve plate rotating center of valve plate involute shape sealing surface departs from.
2. according to the described metallic sealing butterfly valve of claim 1, it is characterized in that the both sides of the sealing surface of valve seat (4) are respectively 30 degree ring channel structures and 45 degree oblique angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031337732A CN1297769C (en) | 2003-07-23 | 2003-07-23 | Metal butterfly valve for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031337732A CN1297769C (en) | 2003-07-23 | 2003-07-23 | Metal butterfly valve for sealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1570434A CN1570434A (en) | 2005-01-26 |
| CN1297769C true CN1297769C (en) | 2007-01-31 |
Family
ID=34470100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031337732A Expired - Fee Related CN1297769C (en) | 2003-07-23 | 2003-07-23 | Metal butterfly valve for sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1297769C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963213A (en) * | 1973-10-15 | 1976-06-15 | Saab-Scania Aktiebolag | Butterfly valve |
| CN86200319U (en) * | 1986-01-23 | 1986-09-03 | 周建云 | Variable eccentricity-type butterfly valve |
| CN2086831U (en) * | 1991-01-09 | 1991-10-16 | 黄作兴 | spherical butterfly valve |
| CN2145896Y (en) * | 1992-12-22 | 1993-11-10 | 郑州蝶阀厂 | Eccentric butterfly bamper |
| CN2406115Y (en) * | 2000-01-27 | 2000-11-15 | 黄剑峰 | Three eccentric butterfly valve |
| JP2001059577A (en) * | 1999-08-20 | 2001-03-06 | Tomoe Tech Res Co | Valve element for butterfly valve of doubly eccentric structure |
-
2003
- 2003-07-23 CN CNB031337732A patent/CN1297769C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963213A (en) * | 1973-10-15 | 1976-06-15 | Saab-Scania Aktiebolag | Butterfly valve |
| CN86200319U (en) * | 1986-01-23 | 1986-09-03 | 周建云 | Variable eccentricity-type butterfly valve |
| CN2086831U (en) * | 1991-01-09 | 1991-10-16 | 黄作兴 | spherical butterfly valve |
| CN2145896Y (en) * | 1992-12-22 | 1993-11-10 | 郑州蝶阀厂 | Eccentric butterfly bamper |
| JP2001059577A (en) * | 1999-08-20 | 2001-03-06 | Tomoe Tech Res Co | Valve element for butterfly valve of doubly eccentric structure |
| CN2406115Y (en) * | 2000-01-27 | 2000-11-15 | 黄剑峰 | Three eccentric butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1570434A (en) | 2005-01-26 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |