CN2763645Y - Flushing proof device for stop valve - Google Patents
Flushing proof device for stop valve Download PDFInfo
- Publication number
- CN2763645Y CN2763645Y CN 200520033061 CN200520033061U CN2763645Y CN 2763645 Y CN2763645 Y CN 2763645Y CN 200520033061 CN200520033061 CN 200520033061 CN 200520033061 U CN200520033061 U CN 200520033061U CN 2763645 Y CN2763645 Y CN 2763645Y
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- stop valve
- diaphragm seal
- spool
- groove
- 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 - Lifetime
Links
Images
Landscapes
- Valve Housings (AREA)
Abstract
The utility model discloses a flushing proof device for a stop valve, which comprises a valve core and a sealing sheet, wherein the sealing sheet is fixed on the valve core through a clamping plate. The outer edge of the lower surface of the valve core and the clamping plate form a groove in which the sealing sheet is arranged. In the course of sealing, a sealing seat is pushed into the groove. Gas stream just can flush the outer edge of the valve core, which protects the edge of the sealing sheet. To lead solid impurities not to directly flush the surface of the sealing sheet and reduce the flushing speed of the solid impurities to the surface, the utility model alters the structure of the clamping plate, the outer edge of the lower surface of the clamping plate is processed to be inner concave arc-shaped for diversion. Then, transversal diversion for gas can be realized. Simultaneously, the sealing seat of the valve body is a little inwards sloped. When media flows, the speed of the sealing sheet is weakened by an arc-shaped flow passage and the sloped surface. Thus, the speed and the impact force of solid particles are reduced, and the surface of the sealing sheet is protected.
Description
Technical field
The utility model relates to a kind of valve, specifically, relates to a kind of stop valve protection against erosion device.
Background technique
In traditional stop valve diaphragm seal design, diaphragm seal is exposed in the air-flow, and air-flow directly impacts on the diaphragm seal.Valve is when work, granular solids is arranged in the medium unavoidably, under the drive of high velocity air, particle will wash away diaphragm seal, behind certain folding number of times, vestige will appear more significantly washing away in the surface of diaphragm seal and edge section, thereby destroyed diaphragm seal, caused leakage, had a strong impact on the sealability of valve, reduce the working life of diaphragm seal, disturb normally and produce.Address this problem, help prolonging life of valve, and improve sealability, for a long time, the protection of soft sealing face all is an a great problem on the stop valve spool.
Summary of the invention
Goal of the invention of the present utility model is to overcome above-mentioned deficiency, provides a kind of medium that prevents directly to wash away the stop valve protection against erosion device of diaphragm seal.
For achieving the above object, stop valve protection against erosion device of the present utility model comprises spool, diaphragm seal, and diaphragm seal is fixed on the spool by clamping plate, and on this basis, spool lower surface outward edge and clamping plate form groove, and diaphragm seal places groove; When airtight, sealing seat heads in the groove.
In the prior art, the edge section of diaphragm seal, because flow resistance is bigger, the easiest being washed away, and also the hardness of diaphragm seal neither be fine with wear resistance, and the time one is long, and seamed edge will be washed away.Flow resistance herein can not change, and the utility model adds a hardness with all far better spool outward edge of wear resistance outside diaphragm seal, and the edge section of diaphragm seal is all protected.Like this, air-flow can only be washed on the spool outer rim, has protected the seamed edge of diaphragm seal.
In order to make solid impurity directly not wash away the diaphragm seal surface; speed when reducing it and being washed into the surface; the utility model has changed the structure of clamping plate; the lower surface outer rim of clamping plate is processed into the indent arc of water conservancy diversion; gas is carried out horizontal water conservancy diversion; simultaneously; the sealing seat lower end water diversion part of valve body slopes inwardly; its upper edge is positioned at the vertical lower of clamping plate lower surface arc; medium can directly not wash away and lead the diaphragm seal surface when mobile, has been weakened the speed that arrives diaphragm seal by arc runner and plane of inclination; also just reduce the speed and the impact force of solid particle, protected the surface of diaphragm seal.
Description of drawings
Fig. 1 is prior art stop valve structure figure;
Fig. 2 is a kind of embodiment structural drawing of the utility model stop valve protection against erosion device;
Fig. 3 is the another kind of embodiment structural drawing of the utility model stop valve protection against erosion device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model stop valve protection against erosion device is described in further detail and describes.
Fig. 1 is prior art stop valve structure figure.Among the figure, when airflow direction was high in and low out, no matter spool 5 was to open or closure, and air-flow all will wash away the edge A point of diaphragm seal 4 along the internal surface of valve body 1 high-end 11; When airflow direction is low in and high out, air-flow will wash away diaphragm seal 4 lower surfaces along valve body 1 low side, 12 internal surfaces and sealing seat 6 internal surfaces, also will wash away the edge A point of diaphragm seal 4.Clamping plate 2 among the figure just are used for fixing diaphragm seal 4 by set screws 3, and all the other do not bring into play any effect.
Fig. 2 is a kind of embodiment structural drawing of the utility model stop valve protection against erosion device.Among the figure, clamping plate 2 and set screws 3 are fixed on the spool 5, and diaphragm seal 4 is pressed on the spool 5, and there is metal coating circle 7 spool 5 outsides, with pin 8 it are circumferentially located.Metal coating circle 7 bottoms are a little more than spool 5 bottom surfaces, and formation groove 9 between the clamping plate 2, and diaphragm seal 4 places groove 9.The lower surface outer rim 21 of clamping plate 2 is processed into the indent arc of water conservancy diversion, and the sealing seat 6 of valve body 1 also has in some, and forms water conservancy diversion inclined-plane 61, and the upper edge on water conservancy diversion inclined-plane 61 is positioned at the vertical lower of clamping plate 2 lower surface arcs.
When air-flow was high in and low out, air-flow washed away the edge A point of metal coating circle 7 along the internal surface of valve body 1 high-end 11, the seamed edge of protection diaphragm seal 4; When the air-flow low in and high out, air-flow will be washed into along the water conservancy diversion inclined-plane 61 of valve body 1 low side, 12 internal surfaces and sealing seat 6 on the water conservancy diversion cambered surface of clamping plate 2, entering high pitched tune along the water conservancy diversion cambered surface again, promptly is the lower surface of some airflow scouring to diaphragm seal 6, and speed also is very little.
Fig. 3 is the another kind of embodiment structural drawing of the utility model stop valve protection against erosion device.In the present embodiment, the metal coating circle is directly accomplished promptly to make groove 9 at the lower surface edge of spool 5 on the spool 5, diaphragm seal 4 is contained in 9 li of grooves, protection effect and embodiment 2, and stop valve protection against erosion device promptly shown in Figure 2 is the same.
As valve, behind switch 100,000 times, the seamed edge of diaphragm seal will be washed away most, some less vestiges also will appear in the diaphragm seal surface, and behind switch 150,000 times, seamed edge thoroughly disappears, bigger hole, hole has also appearred in the surface, and at this moment, the sealability of valve reduces greatly.After having adopted our this protection against erosion structure, in our test, behind the switch more than 60 ten thousand times, the surface of diaphragm seal just begins to occur than obvious marks, and the metal coating circle has had comparatively tangible polishing effect, and its surperficial coating has been washed away; Behind switch 1,000,000 times, comparatively serious vestige just appears in the surface of diaphragm seal, the influence sealing.And from start to finish, the seamed edge of diaphragm seal is damage never.
In our test, after 1,000,000 times, it is smooth as the minute surface that the lower surface edge of the water conservancy diversion cambered surface of Fig. 2,3 middle clamp plates 2, the lower surface A point place fillet of metal coating circle 7 or spool 5 all is, and has and significantly wash away vestige.
Can significantly find out from these laboratory datas, experiment situation, after having adopted the structure that we invented, to improve greatly the working life of diaphragm seal, reduced the replacing frequency of diaphragm seal, promptly be to have reduced dead time, this is for the especially large-scale chemical enterprise of chemical enterprise, and its function and significance is self-evident.
The utility model stop valve protection against erosion device is not limited to the scope of embodiment, and all innovation and creation that utilize the utility model design are all at the row of protection.
Claims (4)
1. a stop valve protection against erosion device comprises spool, diaphragm seal, and diaphragm seal is fixed on the spool by clamping plate, it is characterized in that, spool lower surface outward edge and clamping plate form groove, and diaphragm seal places groove: when airtight, sealing seat heads in the groove.
2. stop valve protection against erosion device according to claim 1, it is characterized in that, the lower surface outer rim of described clamping plate is processed into the indent arc of water conservancy diversion, gas is carried out horizontal water conservancy diversion, simultaneously, the sealing seat lower end water diversion part of valve body slopes inwardly, and its upper edge is positioned at the vertical lower of clamping plate lower surface arc.
3. stop valve protection against erosion device according to claim 1 is characterized in that, there is the metal coating circle described spool outside, and metal coating circle bottom is a little more than the spool bottom surface, and the described groove of formation between the clamping plate.
4. hand stop valve according to claim 1, stop valve protection against erosion device is characterized in that the lower surface edge of described spool is made described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033061 CN2763645Y (en) | 2005-01-31 | 2005-01-31 | Flushing proof device for stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033061 CN2763645Y (en) | 2005-01-31 | 2005-01-31 | Flushing proof device for stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763645Y true CN2763645Y (en) | 2006-03-08 |
Family
ID=36141190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033061 Expired - Lifetime CN2763645Y (en) | 2005-01-31 | 2005-01-31 | Flushing proof device for stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2763645Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291941A (en) * | 2012-02-24 | 2013-09-11 | 宋新建 | Valve lip |
| CN112392964A (en) * | 2020-10-29 | 2021-02-23 | 杭州良盛电气有限公司 | Self-control micro-pressure regulating valve |
-
2005
- 2005-01-31 CN CN 200520033061 patent/CN2763645Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291941A (en) * | 2012-02-24 | 2013-09-11 | 宋新建 | Valve lip |
| CN112392964A (en) * | 2020-10-29 | 2021-02-23 | 杭州良盛电气有限公司 | Self-control micro-pressure regulating valve |
| CN112392964B (en) * | 2020-10-29 | 2022-09-27 | 杭州良盛电气有限公司 | Self-control micro-pressure regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2763645Y (en) | Flushing proof device for stop valve | |
| CN102767631A (en) | Orifice-plate type adjustable throttle valve and manufacturing method thereof | |
| CA2525082A1 (en) | Valve | |
| CN108757991A (en) | A kind of water valve of scale-deposit-preventing | |
| CN208519205U (en) | Ceramic slide valve | |
| CN201351740Y (en) | Anti-leak self-cleaning ball valve | |
| CN202001625U (en) | Gas seal butterfly valve | |
| CN201155578Y (en) | Hydropower control valve | |
| CN201314386Y (en) | Throttle stop venting valve | |
| CN205260903U (en) | Hard ball sealer valve ball body of forked tail formula | |
| CN200986037Y (en) | High-temperature isolating valve | |
| CN204026655U (en) | CFBB rotary wind type blast cap | |
| CN201487248U (en) | Eccentric liner type wear-resistant dust-laden gas butterfly valve | |
| CN2885373Y (en) | Semi-elliptical fixing valve tower board | |
| CN202073770U (en) | Novel spring ball valve | |
| CN208074174U (en) | A kind of industrial pipeline valve | |
| CN205978571U (en) | Ball valve that gas -tight loses | |
| CN221170806U (en) | Ceramic lining plate knife gate valve | |
| CN104074988A (en) | Multi-angle combined and scouring-resistant slurry valve | |
| CN220633363U (en) | Filter element sealing structure | |
| CN201731097U (en) | High-pressure hard seal ball valve | |
| CN2828472Y (en) | Valve core of anti-washout periodic blowoff valve | |
| CN208565626U (en) | A kind of full-bore Mortar valve | |
| CN204437337U (en) | Four-way with special nozzle dusts ball valve | |
| CN212251289U (en) | Manual diaphragm valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150131 Granted publication date: 20060308 |