CN2802209Y - Gas-solid two-phase flow valve - Google Patents
Gas-solid two-phase flow valve Download PDFInfo
- Publication number
- CN2802209Y CN2802209Y CN 200520018940 CN200520018940U CN2802209Y CN 2802209 Y CN2802209 Y CN 2802209Y CN 200520018940 CN200520018940 CN 200520018940 CN 200520018940 U CN200520018940 U CN 200520018940U CN 2802209 Y CN2802209 Y CN 2802209Y
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- valve
- ball
- gas
- hole
- radius
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Abstract
The utility model relates to a gas-solid two-phase flow valve which comprises a valve body, a valve rod, a valve ball, a compression spring, a screw plug and a valve sheet, wherein a valve cavity is formed by the mutual screw of the valve body and the screw plug. The valve body is provided with a valve hole and an air outlet hole which is communicated with the valve hole, and the screw plug is provided with an air inlet hole which is communicated with the valve cavity. The hole end of the valve hole in the valve cavity is provided with the valve sheet with a central hole. The central hole of the valve sheet is supported by the valve ball through the pressure of the pressure spring so that the valve hole is sealed, and the valve ball is supported by the valve rod from the other side. The utility model is characterized in that the curve radius of a concave spherical surface which is arranged on the valve sheet is larger than the radius of the valve ball. The utility model has the advantages of favorable preventing leakage and wear resistance.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of gas-solid biphase flow valve that is used for anti-riot sprayer trigger valve.
Background technique
Trigger valve on the anti-riot sprayer is the control sprayer vitals launching and stop, and its quality directly influences the Security and the reliability of anti-riot sprayer, therefore, requires that anti-riot sprayer trigger valve is wear-resistant, tightness good, the life-span is long.At present still do not have the trigger valve that is specifically designed on the anti-riot sprayer, adopt the air valve of Fig. 1 structure to be used as trigger valve usually.This air valve mainly is made up of valve body 1, valve rod 2, valve ball 4, stage clip 5, plug screw 6 and valve block 8.Wherein, valve body 1 screws togather mutually with plug screw 6 and forms valve pocket 11, the air outlet hole 3 that on valve body 1, is provided with valve opening 12 and communicates with valve opening 12, on plug screw 6, be provided with the inlet hole 7 that is communicated with valve pocket, the nose end of valve opening 12 is provided with and has the concave spherical surface identical with the valve ball radius and the valve block 8 of center hole in valve pocket 11, valve ball 4 is by the concave spherical surface of the pressure contact valve block 8 of stage clip 5 and center hole and valve opening is sealed, above-mentioned valve block 8, valve ball 4, stage clip 5 common formation spools, valve rod 2 is surveyed contact valve ball 4 from another, when external force greater than stage clip and gas during to the pressure of valve ball 4, service 4 will be left valve opening, and inlet hole 7 will communicate with air outlet hole, and air-flow will be discharged by air outlet hole by valve.Because what flow through anti-riot sprayer trigger valve is gas powder stream, is the fluid-mixing of gas and solid, solid particle causes easily and is held and leaks, and swiftly flowing powder is worn the valve block of standard valve and valve ball very soon.How therefore a kind of anti-leak, anti abrasive gas-solid biphase flow valve as the trigger valve on the anti-riot sprayer are provided is the difficult problem that those skilled in the art attack for a long time without any result.
Summary of the invention
Technical problem to be solved in the utility model is at the above-mentioned deficiency of prior art, and to provide a kind of anti-leak, anti abrasive gas-solid biphase flow valve as the trigger valve on the anti-riot sprayer.
Gas-solid biphase flow valve provided by the utility model is realized by following technological scheme.
A kind of gas-solid biphase flow valve, comprise: valve body, valve rod, valve ball, stage clip, plug screw and valve block, wherein, valve body and plug screw screw togather the formation valve pocket mutually, the air outlet hole that on valve body, is provided with valve opening and communicates with valve opening, on plug screw, be provided with the inlet hole that is communicated with valve pocket, the nose end of valve opening is provided with the valve block with center hole in valve pocket, valve ball seals valve opening by the center hole of the pressure contact valve block of stage clip, valve rod is surveyed the contact valve ball from another, it is characterized in that described valve block is provided with the concave spherical surface of radius of curvature greater than the valve ball radius.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
Described gas-solid biphase flow valve is characterized in that, the radius of curvature of concave spherical surface on the described valve block=(1.02 ~ 1.5) valve ball radius, the best are 1.1 ~ 1.2 valve ball radiuses.
Described gas-solid biphase flow valve is characterized in that, described valve ball is ceramic valve ball.
Described gas-solid biphase flow valve is characterized in that, described valve ball is silicon nitride (Si
3N
4) ceramic valve ball.
Described gas-solid biphase flow valve is characterized in that described valve block is a ceramic valve plate.
Described gas-solid biphase flow valve is characterized in that, described valve block is silicon nitride (Si
3N
4) ceramic valve plate.
Advantage of the present utility model is:
1, the radius of curvature of concave spherical surface makes greater than the valve ball radius that surface of contact reduces between valve ball and the valve block on the valve block, becomes non-ly to pay with camber line contact seal, and the width that makes surface of contact is less than particle diameter, reduces powder and is stuck in possibility on the sealing surface.
2, adopt the silicon nitride ceramics valve ball, its hardness is HRA92, and abrasion resistance is higher 4 ~ 8 times than cemented carbide; Silicon nitride ceramics has self lubricity, reduces powder and adheres to.
For structure characteristic of the present utility model and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the structural drawing of existing trigger valve.
Fig. 2 is the valve core structure figure of existing trigger valve.
Fig. 3 is gas-solid biphase flow valve valve core structure figure of the present utility model.
Embodiment
Fig. 3 is gas-solid biphase flow valve valve core structure figure of the present utility model.Gas-solid biphase flow valve of the present utility model is basic identical in existing valve mechanism, formed by valve body 1, valve rod 2, plug screw 6 and by the spool that valve block 9, valve ball 10, stage clip 5 are formed, its difference is, replaces the radius of curvature of the concave spherical surface on the prior art middle valve plate 8 to equal the valve ball radius with radius of curvature greater than the concave spherical surface of valve ball radius on the described valve block 9.So the purpose of design is to make that surface of contact reduces between valve ball and the valve block, becomes non-ly to pay with camber line contact seal, and the width that makes surface of contact is less than particle diameter, with reduce powder be stuck on the sealing surface may, reach the purpose of the sealing that improves valve.
Specifically, the radius of curvature of concave spherical surface on the described valve block 9=(1.02 ~ 1.5) valve ball radius, the best is (1.1 ~ 1.2) valve ball radius.
For improving the wear resistance of spool, described valve block 9 and valve ball 10 all adopt the stupalith compacting, form through grinding and lappingout,
Specifically be to adopt silicon nitride ceramics valve block 9 and silicon nitride ceramics valve ball 10, the hardness of silicon nitride ceramics is HRA92, and abrasion resistance is higher 4 ~ 8 times than cemented carbide; Silicon nitride ceramics also has self lubricity, can reduce powder and adhere to.
Gas-solid biphase flow valve employing silicon nitride ceramic material of the present utility model-non-with the secondary spool of making of camber line contact seal has solved the sealing problem of high speed gas powder stream, and life of valve reaches 500 times.
Claims (6)
1, a kind of gas-solid biphase flow valve, comprise: valve body, valve rod, valve ball, stage clip, plug screw and valve block, wherein, valve body and plug screw screw togather the formation valve pocket mutually, the air outlet hole that on valve body, is provided with valve opening and communicates with valve opening, on plug screw, be provided with the inlet hole that is communicated with valve pocket, the nose end of valve opening is provided with the valve block with center hole in valve pocket, valve ball seals valve opening by the center hole of the pressure contact valve block of stage clip, valve rod is surveyed the contact valve ball from another, it is characterized in that described valve block is provided with the concave spherical surface of radius of curvature greater than the valve ball radius.
2, gas-solid biphase flow valve according to claim 1 is characterized in that, the radius of curvature of concave spherical surface on the described valve block=(1.02 ~ 1.5) valve ball radius, and the best is (1.1 ~ 1.2) valve ball radius.
3, gas-solid biphase flow valve according to claim 1 is characterized in that, described valve ball is ceramic valve ball.
4, gas-solid biphase flow valve according to claim 1 is characterized in that, described valve ball is the silicon nitride ceramics valve ball.
5, gas-solid biphase flow valve according to claim 1 is characterized in that, described valve block is a ceramic valve plate.
6, gas-solid biphase flow valve according to claim 1 is characterized in that, described valve block is the silicon nitride ceramics valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520018940 CN2802209Y (en) | 2005-05-16 | 2005-05-16 | Gas-solid two-phase flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520018940 CN2802209Y (en) | 2005-05-16 | 2005-05-16 | Gas-solid two-phase flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802209Y true CN2802209Y (en) | 2006-08-02 |
Family
ID=36846917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520018940 Expired - Lifetime CN2802209Y (en) | 2005-05-16 | 2005-05-16 | Gas-solid two-phase flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802209Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932584A (en) * | 2014-04-29 | 2014-07-23 | 绍兴市吉柏尼机电有限公司 | Sealing structure of electric pressure cooker with hemispherical valve element and manufacturing method of sealing structure |
| CN108254226A (en) * | 2018-03-23 | 2018-07-06 | 亚洲硅业（青海）有限公司 | A kind of pollution-free closed sampler |
-
2005
- 2005-05-16 CN CN 200520018940 patent/CN2802209Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932584A (en) * | 2014-04-29 | 2014-07-23 | 绍兴市吉柏尼机电有限公司 | Sealing structure of electric pressure cooker with hemispherical valve element and manufacturing method of sealing structure |
| CN103932584B (en) * | 2014-04-29 | 2016-08-31 | 绍兴市吉柏尼机电有限公司 | A kind of electric pressure cooker sealing structure of hemisphere face spool and preparation method thereof |
| CN108254226A (en) * | 2018-03-23 | 2018-07-06 | 亚洲硅业（青海）有限公司 | A kind of pollution-free closed sampler |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150516 Granted publication date: 20060802 |