CN101349352A - Dustproof apparatus in high temperature butterfly valve - Google Patents
Dustproof apparatus in high temperature butterfly valve Download PDFInfo
- Publication number
- CN101349352A CN101349352A CNA2008100217183A CN200810021718A CN101349352A CN 101349352 A CN101349352 A CN 101349352A CN A2008100217183 A CNA2008100217183 A CN A2008100217183A CN 200810021718 A CN200810021718 A CN 200810021718A CN 101349352 A CN101349352 A CN 101349352A
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- CN
- China
- Prior art keywords
- dust
- valve
- dustproof
- valve shaft
- gland
- 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.)
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Abstract
The invention discloses an anti-dust device in a high-temperature butterfly valve, which is low in price and can avoid valve shafts locking. The anti-dust device comprises a valve body and a valve shaft, an anti-dust gland is fixedly arranged on the valve body, the valve shaft is movably arranged in the valve body and the anti-dust gland, the anti-dust gland is equipped with a ring-shaped anti-dust groove opposite to the valve shaft, an anti-dust baffle group sleeved on the valve shaft is embedded in the anti-dust groove, the front end face and the rear end face of the anti-dust baffle group are respectively pushed against on the front wall and the rear wall of the anti-dust groove, and anti-dust baffles can freely rotate along with the valve shaft in the anti-dust groove. The anti-dust device is low in price which resolves the anti-dust problem of the high-temperature butterfly valve and the locking problem of the valve shaft well.
Description
Technical field
The present invention relates to high temperature butterfly valve, refer more particularly to the dust guard in the high temperature butterfly valve.
Background technique
High temperature butterfly valve is used for the recovery and the recycling residual heat of blast furnace high-temperature flue gas usually as the valve of hot blast stove pre-heating system in the steel industry, meets the environmental protection and energy saving general plan of advocating in the whole world.Present high temperature butterfly valve for fear of under hot environment, because the breathing of valve shaft and valve body is asynchronous, and causes valve shaft stuck in valve body, leaves bigger movable space usually between valve shaft and valve body.But after the space between valve shaft and the valve body was big, the dirt ash in the flue gas will enter into the space between valve shaft and the valve body, and so same meeting causes valve shaft stuck in valve body because of the dirt ash stops up.And for the blast furnace that long-time continuous turns round, never allow butterfly valve to be in operation and break down.Therefore, preventing dust of valve shaft is very important, and is used for the dust-tight felt in the common butterfly valve owing to non-refractory, thereby it can not be applied in the high temperature butterfly valve; And the price of carbon fiber is very expensive, and the large blast furnace demand is limited, and seldom producer is ready supporting.
Summary of the invention
A technical problem to be solved by this invention is: the dust guard in the high temperature butterfly valve that a kind of low price, valve shaft can be not stuck is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the dust guard in the high temperature butterfly valve, comprise: valve body and valve shaft, be set with dustproof gland on the valve body, described valve shaft is movably arranged in valve body and the dustproof gland, the relative valve shaft of dustproof gland is provided with the dustproof groove of annular, and the dustproof catch group that is sleeved on the valve shaft embeds in the dustproof groove, and the front and rear end of dustproof catch group difference resilient abutment is on the front and back walls of dustproof groove.
Described dustproof catch group is made of the flexible sheet metal of being with of some thickness stacked together between 0.1～0.3 millimeter.
The invention has the beneficial effects as follows: low price of the present invention has solved the dustproof problem of described high temperature butterfly valve and the stuck problem of valve shaft well.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Among the figure: 1, valve body, 2, valve shaft, 3, dustproof gland, 4, dustproof catch group, 5, dustproof groove, 6, screw, 7, cross axis hole.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, dust guard in the high temperature butterfly valve of the present invention, comprise: valve body 1 and valve shaft 2, described valve body 1 is provided with dustproof gland 3, dustproof gland 3 is fixed on the valve body 1 by screw 6, described valve shaft 2 is arranged on crossing in the axis hole 7 of linking to each other in valve body 1 and the dustproof gland 3 and connect, leave bigger space because of crossing axis hole 7 between valve body 1 and dustproof gland 3 and the valve shaft 2, dustproof gland 3 relative valve shafts 2 are provided with the dustproof groove 5 of annular, be set with dustproof catch group 4 on the valve shaft 2, dustproof catch group 4 is made of the sheet metal of some thickness between 0.1～0.3 millimeter stacked together, every sheet metal and valve shaft 2 are transition fit, and dustproof catch group 4 embeds in the dustproof groove 5, and before the dustproof catch group 4, ear end face difference resilient abutment is before dustproof groove 5, on the rear wall.
Working principle of the present invention is: every sheet metal and valve shaft 2 are transition fit, can avoid the dirt ash to pass along valve shaft 2; Because being the shape that looses, dustproof catch group 4 piles up, its ductility and slight elasticity slightly, make itself and dustproof groove 5 front and back walls surfaces in the dustproof gland 3 be that elasticity is loosening to be contacted, can in dustproof groove 5, freely rotate with valve shaft 2, simultaneously, the front and back walls surface of the dustproof groove 5 in dustproof catch group 4 and dustproof gland 3 forms the two seals face, has stoped the end face invagination of dust from dustproof gland 3 effectively; The dustproof problem of described high temperature butterfly valve and the stuck problem of valve shaft have been solved like this, well; And the cost of whole dust guard is very cheap.
Claims (2)
1. the dust guard in the high temperature butterfly valve, comprise: valve body and valve shaft, be set with dustproof gland on the valve body, it is characterized in that: described valve shaft is movably arranged in valve body and the dustproof gland, the relative valve shaft of dustproof gland is provided with the dustproof groove of annular, the dustproof catch group that is sleeved on the valve shaft embeds in the dustproof groove, and the front and rear end of dustproof catch group difference resilient abutment is on the front and back walls of dustproof groove.
2. the dust guard in the high temperature butterfly valve as claimed in claim 1 is characterized in that: described dustproof catch group is made of the flexible sheet metal of being with of some thickness stacked together between 0.1～0.3 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100217183A CN101349352B (en) | 2008-08-11 | 2008-08-11 | Dustproof apparatus in high temperature butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100217183A CN101349352B (en) | 2008-08-11 | 2008-08-11 | Dustproof apparatus in high temperature butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101349352A true CN101349352A (en) | 2009-01-21 |
| CN101349352B CN101349352B (en) | 2011-05-18 |
Family
ID=40268250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100217183A Expired - Fee Related CN101349352B (en) | 2008-08-11 | 2008-08-11 | Dustproof apparatus in high temperature butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101349352B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759026A (en) * | 2013-12-30 | 2014-04-30 | 宁波市天基隆智控技术有限公司 | Butterfly valve |
| CN104565402A (en) * | 2013-10-29 | 2015-04-29 | 安徽红星阀门有限公司 | Valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320865Y (en) * | 1997-12-17 | 1999-05-26 | 王嘉铭 | Sealing ring group of intermediate shaft of valve |
| CN1554890A (en) * | 2003-12-22 | 2004-12-15 | 王秉勋 | High temperature resistant high pressure elastic ball seat ball valve |
| CN101216118B (en) * | 2008-01-14 | 2012-07-18 | 沈阳恒屹实业有限公司 | Hollow butterfly plate butterfly valve |
| CN201293113Y (en) * | 2008-08-11 | 2009-08-19 | 江苏省鑫通阀门制造有限公司 | Dustproof apparatus in high-temperature butterfly valve |
-
2008
- 2008-08-11 CN CN2008100217183A patent/CN101349352B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565402A (en) * | 2013-10-29 | 2015-04-29 | 安徽红星阀门有限公司 | Valve |
| CN103759026A (en) * | 2013-12-30 | 2014-04-30 | 宁波市天基隆智控技术有限公司 | Butterfly valve |
| CN103759026B (en) * | 2013-12-30 | 2015-12-02 | 宁波市天基隆智控技术有限公司 | Butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101349352B (en) | 2011-05-18 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20150811 |
|
| EXPY | Termination of patent right or utility model |