CN100419312C - Vacuum butterfly valve - Google Patents
Vacuum butterfly valve Download PDFInfo
- Publication number
- CN100419312C CN100419312C CNB2006100913570A CN200610091357A CN100419312C CN 100419312 C CN100419312 C CN 100419312C CN B2006100913570 A CNB2006100913570 A CN B2006100913570A CN 200610091357 A CN200610091357 A CN 200610091357A CN 100419312 C CN100419312 C CN 100419312C
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- CN
- China
- Prior art keywords
- valve
- butterfly
- butterfly plate
- described valve
- valve seat
- 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
This invention relates to one vacuum butterfly valve, which comprises valve parts with valve socket, wherein, one butterfly board is fixed on one valve bar moving through one valve bar cover; the said valve bar driving, the butterfly board switches on socket with several T shape sealing rings on contact surface; it is characterized by setting several protruding blocks between T shape sealing ring and valve socket sealing surface.
Description
The name that the application requires on August 31st, 2005 to submit to Patent Office of the People's Republic of China is called the preference of the 200520044668.2nd utility application of " vacuum butterfly valve ".
Technical field
The present invention relates to a kind of vacuum butterfly valve.
Background technique
Vacuum butterfly valve is used for industries such as electric power, is on the vacuum line of steam or air especially for use in ducted medium, does through-flow or by using.In existing vacuum butterfly valve, adopt the seal ring of "T"-shaped section between butterfly plate and the valve seat, the operating mode that adapts to the high velocity vapor medium, adjust the degree that compresses of seal ring, can obtain optimal seal and operating effect, seal ring adopts specific rubber to make, and heatproof height, ageing resistance are good, long service life.
Yet,, higher for sealing requirements because butterfly valve is to work under the subatmospheric situation of ducted pressure.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of vacuum butterfly valve, and its sealing configuration is simple, good seal performance.
For this reason, vacuum butterfly valve proposed by the invention, comprise valve body, on described valve body, be provided with valve seat, one butterfly plate is installed on a valve rod, and described valve rod is arranged in the valve stem casing on the described valve body rotationally, and described butterfly plate opens and closes on valve seat under the drive of described valve rod, described butterfly plate and described valve base sealing surface of contact are provided with T shape seal ring, described T shape seal ring with that face that described valve seat contacts on be provided with a plurality of projections; Described valve outer wall corresponding to described valve seat and described butterfly plate sealing contact surface is provided with Electric heating appliance.
Preferably, be provided with many groups between described valve rod and the described valve body and prevent the V-arrangement filler, described V-arrangement filler is oppositely arranged with countercurrent direction.Compared with prior art, among the present invention,, can on sealing surface, form multiple-sealedly, and make sealability enhancing because the T shape seal ring on the butterfly plate is provided with a plurality of projections on that face that contact with valve seat.Preferable, between the gap between valve rod and the valve body, adopting many group V-arrangement fillers, the V-arrangement filler is oppositely arranged with countercurrent direction, also can form multiple-sealed.In addition, on corresponding to the valve outer wall between valve seat and the butterfly plate, also be provided with Electric heating appliance, can in cold environment, prevent the vapor condensation Cheng Shui in the pipeline, thereby prevent that valve opening moment from increasing, and damages sealing surface.
Description of drawings
Fig. 1 is the schematic partial cross-sectional view of vacuum butterfly valve of the present invention;
Fig. 2 is the local cut-away enlarged view of I portion among Fig. 1; And
Fig. 3 is the local cut-away enlarged view of II portion among Fig. 1.
Embodiment
As shown in Figure 1, vacuum butterfly valve of the present invention comprises valve body 1, on described valve body, be provided with valve seat 2, one butterfly plate 3 is installed on a valve rod 4, described valve rod 4 is arranged in the valve stem casing on the described valve body 5 rotationally, opens and closes on valve seat 2 at described butterfly plate 3 under the drive of described valve rod 4, and described butterfly plate 3 and described valve seat 2 surface of contact are provided with T shape seal ring 6, it is characterized in that, described T shape seal ring with that face that described valve seat contacts on be provided with a plurality of projections 61.T shape seal ring is made by rubber material, and these projections 61 form multiple-sealed, improve the sealability between butterfly plate and the valve seat significantly.
In the present invention, be provided with V-arrangement filler 7 between valve rod 4 and the valve body 1, V-arrangement filler 7 is provided with on the opposite direction that infiltrates with medium and flow out, infiltrate and flow out to prevent medium, the V-arrangement filler be provided with in pairs and direction relative.In the described embodiment of this specification, only show one group of V-arrangement filler 7 that is oppositely arranged, but one of ordinary skill in the art will appreciate that, the relative V-arrangement filler of many groups can also be set.
In addition, because vacuum butterfly valve in most cases is applied in the cold environment, and because the medium temperature in the pipeline is higher, influence butterfly plate unlatching moment and damage sealing surface for the medium that prevents butterfly plate and valve seat contact seal place is condensed into water, in the present invention, valve body outside in butterfly plate and valve seat contact seal place is provided with Electric heating appliance 8, makes the ambient temperature rising of contact seal face partly and prevents that the medium of contact seal place is condensed into water.
Claims (2)
1. vacuum butterfly valve, comprise valve body, on described valve body, be provided with valve seat, one butterfly plate is installed on a valve rod, described valve rod is arranged in the valve stem casing on the described valve body rotationally, and described butterfly plate opens and closes on valve seat under the drive of described valve rod, and the described butterfly plate and the described contact surface of valve seat are provided with T shape seal ring, wherein, described T shape seal ring with that face that described valve base sealing contacts on be provided with a plurality of projections; It is characterized in that, be provided with Electric heating appliance corresponding to the described valve outer wall of described valve seat and described butterfly plate sealing contact surface.
2. vacuum butterfly valve as claimed in claim 1 is characterized in that, is provided with many group V-arrangement fillers between described valve rod and the described valve body, and described V-arrangement filler is oppositely arranged with countercurrent direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100913570A CN100419312C (en) | 2005-08-31 | 2006-06-15 | Vacuum butterfly valve |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520044668.2 | 2005-08-31 | ||
| CN200520044668 | 2005-08-31 | ||
| CNB2006100913570A CN100419312C (en) | 2005-08-31 | 2006-06-15 | Vacuum butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1924411A CN1924411A (en) | 2007-03-07 |
| CN100419312C true CN100419312C (en) | 2008-09-17 |
Family
ID=37817156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100913570A Expired - Fee Related CN100419312C (en) | 2005-08-31 | 2006-06-15 | Vacuum butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100419312C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620000B (en) * | 2012-04-16 | 2014-02-26 | 株洲南方阀门股份有限公司 | Electric vacuum butterfly valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492331A1 (en) * | 1990-12-21 | 1992-07-01 | Friatec Aktiengesellschaft Keramik- und Kunststoffwerke | Butterfly valve |
| CN2161794Y (en) * | 1993-05-31 | 1994-04-13 | 孙玉国 | Electronic insulating valve |
| CN2287234Y (en) * | 1996-11-20 | 1998-08-05 | 铁道部科学研究院金属及化学研究所 | Lip seal |
| CN1236422A (en) * | 1996-10-31 | 1999-11-24 | 费希尔控制国际公司 | Bushing-less stem guide control valve |
| CN2450450Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Valve for gas cylinder |
| CN2505653Y (en) * | 2001-09-06 | 2002-08-14 | 湖北洪城通用机械股份有限公司 | Anti-sand butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
-
2006
- 2006-06-15 CN CNB2006100913570A patent/CN100419312C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0492331A1 (en) * | 1990-12-21 | 1992-07-01 | Friatec Aktiengesellschaft Keramik- und Kunststoffwerke | Butterfly valve |
| CN2161794Y (en) * | 1993-05-31 | 1994-04-13 | 孙玉国 | Electronic insulating valve |
| CN1236422A (en) * | 1996-10-31 | 1999-11-24 | 费希尔控制国际公司 | Bushing-less stem guide control valve |
| CN2287234Y (en) * | 1996-11-20 | 1998-08-05 | 铁道部科学研究院金属及化学研究所 | Lip seal |
| CN2450450Y (en) * | 2000-10-26 | 2001-09-26 | 上海气体阀门总厂 | Valve for gas cylinder |
| CN2505653Y (en) * | 2001-09-06 | 2002-08-14 | 湖北洪城通用机械股份有限公司 | Anti-sand butterfly valve |
| CN2594565Y (en) * | 2002-12-24 | 2003-12-24 | 天津塘沽瓦特斯阀门有限公司 | Eccentric butterfly valve with flangeseal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1924411A (en) | 2007-03-07 |
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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 | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGNAN VALVES CO., LTD. Free format text: FORMER OWNER: HUANG ZUOXING Effective date: 20081107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081107 Address after: No. 616, Airport Avenue, Wenzhou, Zhejiang Patentee after: Jiangnan Valve Co., Ltd. Address before: No. 616, Airport Avenue, Wenzhou, Zhejiang Patentee before: Huang Zuoxing |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |