CN201391655Y - Positive pressure explosion-proof relief valve - Google Patents
Positive pressure explosion-proof relief valve Download PDFInfo
- Publication number
- CN201391655Y CN201391655Y CN200920041766U CN200920041766U CN201391655Y CN 201391655 Y CN201391655 Y CN 201391655Y CN 200920041766 U CN200920041766 U CN 200920041766U CN 200920041766 U CN200920041766 U CN 200920041766U CN 201391655 Y CN201391655 Y CN 201391655Y
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- China
- Prior art keywords
- valve
- valve body
- explosion
- positive pressure
- proof
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- Expired - Fee Related
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Abstract
The utility model discloses a positive pressure explosion-proof relief valve, comprising a valve body, an air inlet guard shield with a downward air inlet is arranged at an air inlet end of the valve body, a guard shield cover is arranged at the outer side of an exhaust opening of the valve body, exhaust holes are arranged on the guard shield cover. A fire-resistant net is arranged at the inner side of the exhaust opening of the valve body, a valve plate device which is controlled to open and close by air pressure is arranged in the valve body. The structure of the utility model is reasonable, the positive pressure explosion-proof relief valve can provides an over-voltage protection for a leakage compensation type explosion-proof positive pressure system. The positive pressure explosion-proof relief valve is provided with the fire-resistant net, scorching particles in the explosion-proof positive pressure system is prevented from discharging through the valve to cause an outer explosion. The operation pressure is adjustable, the requirements of different positive pressure systems can be met. The valve is a gravity structure, and can realize the quantitative exhaust, thereby the operation pressure is not needed to be adjusted in two times.
Description
Technical field:
The utility model relates to a kind of explosion-proof relief valve.
Background technique:
On permissible electrical equipment, usually can be because malleation is worth excessive destruction that cause equipment.The tradition Decompression valves is a spring structure, can not realize quantitative exhaust, and needs secondary to adjust working pressure.
Summary of the invention:
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, and the positive-pressure explosion-proof Decompression valves of overvoltage protection can be provided for the explosion-proof positive pressure system of leakage compensation type.
Technical solution of the present utility model is:
A kind of positive-pressure explosion-proof Decompression valves, it is characterized in that: comprise valve body, the inlet end of valve body is provided with the downward air inlet guard shield of suction port, the relief opening arranged outside cover cap of valve body, exhaust port is set on the cover cap, relief opening inboard at valve body is provided with the back-fire relief net, and the valve block device that air pressure control opens and closes is set in the valve body.
The exhaust port of cover cap is arranged on the below of valve body relief opening end.
The valve block device that air pressure control opens and closes comprise be arranged on the valve inner gas channel, valve block that the control gaseous passage opens and closes, valve block is connected with the axis of guide in being arranged on axle sleeve, axle sleeve is contained in the top of the intermediate tubular projection of valve base, the bottom of tubular protrusion is provided with vent, and valve base is provided with air chamber.
The utility model is rational in infrastructure, can provide overvoltage protection for the explosion-proof positive pressure system of leakage compensation type; Have the back-fire relief net, prevent that the hot particle in the explosion-proof positive pressure system from discharging by this valve, cause extraneous explosion; Working pressure is adjustable, can satisfy different positive pressure system needs; This valve is that gravity structure can be realized quantitative exhaust, need not secondary and adjusts working pressure.Simple in structure, convenient for installation and maintenance; Outward appearance is small and exquisite, attractive in appearance.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an embodiment's of the utility model a configuration diagram.
Embodiment:
A kind of positive-pressure explosion-proof Decompression valves comprises valve body 5, and the inlet end of valve body 5 is provided with the downward air inlet guard shield 10 of suction port, the relief opening 2 arranged outside cover caps 1 of valve body, exhaust port 12 is set on the cover cap, back-fire relief net 3 is set, the valve block device that air pressure control opens and closes is set in the valve body in the relief opening inboard of valve body.The exhaust port 12 of cover cap is arranged on the below of valve body relief opening end.
The valve block device that air pressure control opens and closes comprise be arranged on the valve inner gas channel, valve block 11 that the control gaseous passage opens and closes, valve block is connected with the axis of guide 7 in being arranged on axle sleeve 6, axle sleeve is contained in the top of the intermediate tubular projection 13 of valve base 8, the bottom of tubular protrusion is provided with vent 14, and valve base is provided with air chamber 15.Also has trim ring 4 among the figure.
The utility model positive-pressure explosion-proof Decompression valves is installed on the chamber wall of positive pressure system,, realizes the sealing of " valve body 5 " and " malleation chamber wall 16 " by rubber pad 9, and " air inlet guard shield 10 " suction port is downward, prevents that foreign matter falls in the malleation chamber.When the malleation cavity pressure surpasses preset pressure, air communication is crossed " air inlet guard shield 10 " and is entered the cavity of resorption of " valve body 5 " and the inner chamber of " base 8 ", by the common pressure effect of air pressure to " valve block 11 " and " axis of guide 7 ", whole " valve block axis of guide assembly " upwards lifted, valve port is opened, and air communication is crossed valve port and is continued upwards, filters the particle that may bring by " 3 back-fire relief net ", outwards turn to by " relief opening 2 " then, be discharged to outside the positive pressure system by " cover cap 1 ".In exhaust condition, when the malleation cavity pressure descends gradually, valve port constantly dwindles, and when cavity pressure dropped to authorized pressure, gap-closing between " valve block 11 " and " valve body 5 " stopped exhaust.
Claims (3)
1, a kind of positive-pressure explosion-proof Decompression valves, it is characterized in that: comprise valve body, the inlet end of valve body is provided with the downward air inlet guard shield of suction port, the relief opening arranged outside cover cap of valve body, exhaust port is set on the cover cap, relief opening inboard at valve body is provided with the back-fire relief net, and the valve block device that air pressure control opens and closes is set in the valve body.
2, positive-pressure explosion-proof Decompression valves according to claim 1, it is characterized in that: the exhaust port of cover cap is arranged on the below of valve body relief opening end.
3, positive-pressure explosion-proof Decompression valves according to claim 1 and 2, it is characterized in that: the valve block device that air pressure control opens and closes comprise be arranged on the valve inner gas channel, valve block that the control gaseous passage opens and closes, valve block is connected with the axis of guide in being arranged on axle sleeve, axle sleeve is contained in the top of the intermediate tubular projection of valve base, the bottom of tubular protrusion is provided with vent, and valve base is provided with air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041766U CN201391655Y (en) | 2009-04-03 | 2009-04-03 | Positive pressure explosion-proof relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041766U CN201391655Y (en) | 2009-04-03 | 2009-04-03 | Positive pressure explosion-proof relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391655Y true CN201391655Y (en) | 2010-01-27 |
Family
ID=41598480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920041766U Expired - Fee Related CN201391655Y (en) | 2009-04-03 | 2009-04-03 | Positive pressure explosion-proof relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391655Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922560A (en) * | 2010-08-18 | 2010-12-22 | 卢泉生 | Heat dissipation type anti-backfire butterfly valve |
| CN106855145A (en) * | 2015-12-09 | 2017-06-16 | 北京谊安医疗系统股份有限公司 | A kind of valve casing for safe valve exhaust |
| CN107237908A (en) * | 2017-03-16 | 2017-10-10 | 荆门宏图特种飞行器制造有限公司 | Transportable pressure vessel and its built-in safety valve |
-
2009
- 2009-04-03 CN CN200920041766U patent/CN201391655Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922560A (en) * | 2010-08-18 | 2010-12-22 | 卢泉生 | Heat dissipation type anti-backfire butterfly valve |
| CN106855145A (en) * | 2015-12-09 | 2017-06-16 | 北京谊安医疗系统股份有限公司 | A kind of valve casing for safe valve exhaust |
| CN107237908A (en) * | 2017-03-16 | 2017-10-10 | 荆门宏图特种飞行器制造有限公司 | Transportable pressure vessel and its built-in safety valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20140403 |