CN102705550B - Pressure relief valve of self-rescuer - Google Patents
Pressure relief valve of self-rescuer Download PDFInfo
- Publication number
- CN102705550B CN102705550B CN 201210209931 CN201210209931A CN102705550B CN 102705550 B CN102705550 B CN 102705550B CN 201210209931 CN201210209931 CN 201210209931 CN 201210209931 A CN201210209931 A CN 201210209931A CN 102705550 B CN102705550 B CN 102705550B
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- pressure
- pressure relief
- valve body
- pressure release
- release seat
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention a pressure relief valve of a self-rescuer, which includes a valve body, wherein a pressure relief seat, an O-shaped ring, a pressure reduction spring and a piston are arranged in the valve body, and the pressure relief seat is arranged at a gas inlet end of the valve body; an exhaust port is arranged at the gas inlet end on the valve body; the O-shaped ring is arranged at the exhaust port and is compacted through the pressure relief seat; the pressure reduction spring is mounted on the piston in a sleeving manner and is connected with the pressure relief seat; and when the output gas pressure achieves a set value, the pressure relief seat moves to the pressure reduction spring side and loosens the O-shaped ring. According the invention, a safety device is post-positioned, so that in case of overpressure gas relief, the exhausted gas can be discharged directly into the atmosphere, but not a breath used loop, and the pressure relief valve is safe and reliable and ensures that the human body breath is not influenced.
Description
Technical field
The present invention relates to a kind of decompressor.A kind of self-rescuer pressure regulator for the colliery compressed oxygen specifically.
Background technique
When the self-rescuer decompression of existing colliery compressed oxygen is exported, surpass the pressure that human body respiration can bear for preventing delivery pressure, be specially provided with a superpressure safety exhaust.But the structures shape of existing product this safety valve the gas of discharging still released breathing with in the pipeline, this just can not reach the safety exhaust effect, has affected normal use.
Structure such as Fig. 1 of existing self-rescuer pressure regulator, comprise valve body 11, SHAPE * MERGEFORMAT suction port A pressurized gas form stable low pressure output B through 13 effects of piston 12 and spring, enter air bag 14 and breathe for the people, but also can increase because of the low pressure that other fortuitous event causes exporting.For preventing after low pressure from increasing the human respiratory tract being injured, the special safety valve relief opening 15 that in device, increased, but when the super 0.8mpa of output low pressure, the safety valve exhaust enters in the air bag, that is to say that the gas or the pressure that enter when breathing are higher, reality is not effective.
Summary of the invention
The problem that exists in order to overcome prior art, the purpose of this invention is to provide a kind of self-rescuer pressure regulator, this safety valve is rearmounted with safety installations, when making overpressure relief gas, can directly enter the gas of discharging in the atmosphere, but not enter in the loop of breathing usefulness, safe and reliable, guarantee that human body respiration is unaffected.
The objective of the invention is to be achieved through the following technical solutions:
A kind of self-rescuer pressure regulator comprises valve body, it is characterized in that: be provided with pressure release seat, O shape circle, relief spring and piston in valve body, the pressure release seat is arranged on the inlet end of valve body; Be positioned at inlet end at valve body and be provided with relief opening, O shape circle is arranged on exhaust ports and compresses by the pressure release seat; Relief spring is sleeved on the piston and with the pressure release seat and is connected; The pressure release seat is to the relief spring side shifting and unclamp O shape circle when output pressure reaches setting value.
Among the present invention, the pressure release seat is to the relief spring side shifting and unclamp O shape circle when output pressure reaches 0.8mpa.
SHAPE of the present invention * MERGEFORMAT with the original safety valve relief opening cancellation that is arranged in the air bag, a pressure release seat and O shape circle have been added in the valve body of safety valve front position, then adopt relief spring, relief spring is by two large functions, spring at the beginning compress variation acts on the pressure release seat, and the pressure release seat is lived seal with O ring; When spring-compressed has begun decompression during to certain size.During use, need only the forward part pressure setting with spring, when output pressure was elevated to setting value, spring was pushed down the power of pressure release seat just less than output gas, and the pressure release seat moves to the spring direction, causes gas to be discharged from O shape circle, plays safety effect; And the gas of discharging can not enter in the air bag, can protect breathing unaffected.
Compared with prior art, the present invention is rearmounted with emergency vent, when making overpressure relief gas, the gas of discharging directly can be entered in the atmosphere, but not enters in the loop of breathing usefulness, and is safe and reliable, guarantees that human body respiration is unaffected.
Description of drawings
Fig. 1 is the structural representation of existing self-rescuer pressure regulator.
Fig. 2 is structural representation of the present invention.
Embodiment
A kind of self-rescuer pressure regulator of the present invention is seen Fig. 2, comprises valve body 1, is provided with pressure release seat 2, O shape circle 3, relief spring 4 and piston 5 in valve body 1, and pressure release seat 2 is arranged on the inlet end of valve body 1; Be positioned at inlet end at valve body 1 and be provided with relief opening 6, O shape circle 3 is arranged on relief opening 6 places and compresses by pressure release seat 2.Relief spring 4 is sleeved on the piston 5 and with pressure release seat 2 and is connected; The pressure release seat is to the relief spring side shifting and unclamp O shape circle when output pressure reaches setting value.In the present embodiment, setting value is 0.8mpa, and the pressure release seat is to the relief spring side shifting and unclamp O shape circle when output pressure reaches 0.8mpa.
During use, with the forward part pressure setting of spring, spring at the beginning compress variation acts on the pressure release seat, and the pressure release seat is pushed down seal with O ring.When output pressure is elevated to setting value, flick the decompression that begun, spring is pushed down the power of pressure release seat just less than output gas, and the pressure release seat moves to the spring direction, causes gas to be discharged from O shape circle, plays safety effect; And the gas of discharging can not enter in the air bag 7, can protect breathing unaffected.
Claims (2)
1. a self-rescuer pressure regulator comprises valve body (1), it is characterized in that: be provided with pressure release seat (2), O shape circle (3), relief spring (4) and piston (5) in valve body (1), pressure release seat (2) is arranged on the inlet end of valve body (1); Be positioned at inlet end at valve body (1) and be provided with relief opening (6), O shape circle (3) is arranged on that relief opening (6) is located and compresses by pressure release seat (2); Relief spring (4) is sleeved on piston (5) and upward and with pressure release seat (2) is connected; Pressure release seat (2) is to relief spring (4) side shifting and unclamp O shape circle (3) when output pressure reaches setting value.
2. self-rescuer pressure regulator according to claim 1 is characterized in that: pressure release seat (2) is to relief spring (4) side shifting and unclamp O shape circle (3) when output pressure reaches 0.8mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210209931 CN102705550B (en) | 2012-06-25 | 2012-06-25 | Pressure relief valve of self-rescuer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210209931 CN102705550B (en) | 2012-06-25 | 2012-06-25 | Pressure relief valve of self-rescuer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705550A CN102705550A (en) | 2012-10-03 |
| CN102705550B true CN102705550B (en) | 2013-10-30 |
Family
ID=46898533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210209931 Expired - Fee Related CN102705550B (en) | 2012-06-25 | 2012-06-25 | Pressure relief valve of self-rescuer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705550B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6412484B1 (en) * | 2000-06-13 | 2002-07-02 | Mallinckrodt Inc. | Fluid control valve for pressure vessel |
| CN2468513Y (en) * | 2001-03-01 | 2002-01-02 | 王世福 | Automatic and quantitative oxygen supply type self saving device |
| CN2566881Y (en) * | 2002-04-19 | 2003-08-20 | 钮静江 | Constant-current pressure reducing valve for air respirator |
| CN201672120U (en) * | 2010-04-26 | 2010-12-15 | 长春航空液压控制有限公司 | Pressure-reducing valve with corrugated pipe |
| CN202629206U (en) * | 2012-06-25 | 2012-12-26 | 江苏亚希维医疗器械有限责任公司 | Pressure relief valve for self rescuer |
-
2012
- 2012-06-25 CN CN 201210209931 patent/CN102705550B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102705550A (en) | 2012-10-03 |
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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: 20131030 Termination date: 20150625 |
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| EXPY | Termination of patent right or utility model |