CN201150728Y - Isolation type compressed air escape respirator - Google Patents
Isolation type compressed air escape respirator Download PDFInfo
- Publication number
- CN201150728Y CN201150728Y CNU2007201318820U CN200720131882U CN201150728Y CN 201150728 Y CN201150728 Y CN 201150728Y CN U2007201318820 U CNU2007201318820 U CN U2007201318820U CN 200720131882 U CN200720131882 U CN 200720131882U CN 201150728 Y CN201150728 Y CN 201150728Y
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- pressure
- low
- valve
- piston
- reducing valve
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- Expired - Fee Related
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Abstract
The utility model provides an isolated type compressed air escape breathing device, which comprises a piston reducing valve. The piston reducing valve is connected with an air bottle and a breathing device, the valve body of the piston reducing valve is provided with a high-bore-pressure area at the lower portion and a low-bore-pressure area at the upper portion, an oxygen bottle interface is arranged in the high-bore-pressure area and the high-bore-pressure area is connected with the low-bore-pressure area via a high pressure air inlet passage, a piston is supported on the valve body via a spring, a valve cover is covered on the top of the valve body, and a one way valve is convenient for filling and exchanging air. The high pressure reducing valve of the utility model employs piston vibration to increase the reducing precision, thereby the flow output stability is better, the +/-10%stability can surpass that of a diaphragm type high pressure reducing valve which is used in the Europe at the present, the interface of the valve and the air bottle employ manual fast connection, thereby enabling the exchanging of the air bottle to be simple, convenient and fast, and meeting daily maintenance.
Description
Technical field
The utility model relates to a kind of lifesaving appliance, specifically is a kind of isolation type compressed air EEBD, is mainly used in personnel's lifesaving of high-rise building when breaking out of fire.
Background technology
Along with the paces of social economy's construction are constantly accelerated, the expansion of urban construction scale, high-rise, high-rise building continues to bring out, urban development also should be paid attention to simultaneously the utilization and the renewal of the supporting with it equipment of preventing and reducing natural disasters, and wherein particularly how tackling skyscraper personnel lifesaving during breaking out of fire in disaster is the problem that can not ignore.Lesson is in the past told us, when fire takes place, most of personnel are because dense smoke is choked to death, and along with building art work upgrade day by day in case run into high temperature and fire they can discharge a large amount of before our multiple pernicious gases of not known, the incompatible people now of the filtering type escape apparatus equipped of past are one of solution routes so be equipped with the compressed air escape apparatus in skyscraper to the requirement of existence.
Existing compressed air escape apparatus mainly comprises: the respirator that gas cylinder, pressure-reducing valve, safety valve, Pressure gauge, low-pressure regulator and personnel wear, what wherein pressure-reducing valve adopted all is Diaphragm reducing valve, Diaphragm reducing valve mainly reduces pressure by the mobile of film, film is tired easily like this, thereby causes gas leak phenomenon.In addition, its output pressure fluctuation is bigger, need regulate pressure frequently between the operating period.
The utility model content
It is constant that technical problem to be solved in the utility model provides a kind of output pressure, need not to regulate pressure between the operating period, the air respiratorresuscitator of longer service life.
Isolation type compressed air EEBD described in the utility model, comprise the pressure-reducing valve that is connected with gas cylinder and personnel's respirator, described pressure-reducing valve is a piston reducing valve, comprise valve body, valve gap, piston, end socket and spring, described valve body has the high gun pressure district of bottom and the low gun pressure district on top, high gun pressure district is provided with the oxygen cylinder interface, and be connected with low gun pressure district by high pressure inlet port, be provided with spring base in the low gun pressure district, piston is supported on the valve body by the spring that is installed in the spring base, valve gap covers at the valve body top, and in top land formation low-pressure cavity, low-pressure cavity communicates with low gun pressure district, and the end socket that mates with the high pressure inlet port gas outlet is housed in the bottom of piston, is provided with two low-pressure channels that are communicated with low tension switch and safety valve in the low gun pressure district.
Above-mentioned end socket is the rubber end socket preferably.
Respirator can adopt thermal radiation resistant seal head shell type respirator.
If cylinder interface is installed manual fast interface, can shorten the time of changing oxygen cylinder, help safe handling.
Piston reducing valve and Diaphragm reducing valve difference:
1, output pressure is more constant, need not to regulate pressure between the operating period, open the pressure that switch just can obtain setting, and flow can be set as required also, regulate.
2, according to use experience: the piston reducing valve sealing property is relatively good.Diaphragm reducing valve causes film fatigue easily owing to mainly reduce pressure by the mobile of film, thus the phenomenon of leaking air.
High-pressure pressure-reducing valve in the utility model has adopted piston concussion mode that the precision of decompression is improved greatly; The flow output stability is better, and+/-10% stability surpasses the diaphragm type high-pressure pressure-reducing valve that use at present in Europe, and valve adopts manually to be connected fast with the interface of gas cylinder and makes gas cylinder change the more simple and efficient daily maintenance that satisfied.
Description of drawings
Fig. 1 is the structural representation of the utility model pressure-reducing valve;
Fig. 2 is the schematic diagram of the utility model throttling sheet and low tension switch.
The specific embodiment
Isolation type compressed oxygen building EEBD as depicted in figs. 1 and 2, comprise the pressure-reducing valve that is connected with oxygen cylinder 11 and respirator, wherein pressure-reducing valve is a piston reducing valve, it comprises valve body 1, valve gap 2, piston 3, rubber end socket 4 and spring 5, described valve body 1 has the high gun pressure district of bottom and the low gun pressure district on top, high gun pressure district is provided with the oxygen cylinder interface, and be connected with low gun pressure district by high pressure admission passage 6, be provided with spring base in the low gun pressure district, piston 3 is supported on the valve body 1 by the spring 5 that is installed in the spring base, valve gap 2 covers at valve body 1 top, and in piston 3 tops formation low-pressure cavity 7, low-pressure cavity 7 communicates with low gun pressure district, and the rubber end socket 4 that mates with the high pressure inlet port gas outlet is housed in the bottom of piston 3, is provided with two low-pressure channels 10 that are communicated with low tension switch 8 and safety valve 9 in the low gun pressure district.
This product mainly by with have check valve, pressure is that the high-pressure oxygen cylinder of 20MPa connect to use.The hyperbaric oxygen pneumatic transmission to pressure reducer, oxygen is decompressed to the low oxygen of required pressure (as 0.35MPa) after, then by throttling sheet 12 and low tension switch 8 its output flows of control.
Its fundamental diagram is: when gases at high pressure flow into low gun pressure district by high pressure admission passage 6 (being the air inlet aperture) and when low-pressure channel 10 (being the low pressure aperture) is exported, being exported low-pressure channel 10 current limlitings because of gas raises low gun pressure district pressure, low gun pressure district is communicated with low-pressure cavity 7, so pressure is identical, piston overcomes spring under the effect of low-pressure cavity 7 pressure active force moves down, thereby make rubber end socket 4 close high pressure admission passage 6, because low-pressure channel 10 continues output gas, thereby low-pressure cavity 7 pressure are decreased, spring force upwards pushes away piston 3 again, thereby move on the rubber end socket 4 high pressure admission passage 6 is opened, so go round and begin again, make the low pressure output pressure remain on a constant scope, play depressurization.High pressure admission passage 6 communicates with Pressure gauge 13, to show the pressure in the high-pressure oxygen cylinder, low-pressure cavity 7 communicates with safety valve 9, safety valve 9 in the pressure limit of setting exhaust as (0.6 ± 0.05MPa), when low-pressure cavity 7 pressure rise so far pressure because of various factors, safety valve promptly moves exhaust, thereby has guaranteed the safe in utilization of product.Flow limits its maximum stream flow (as 30L/min) by throttling sheet 12, and low tension switch 8 is except working the effect of closing, can also 0 in the maximum stream flow scope free adjustment (as 0～30L/min).
Claims (4)
1, a kind of isolation type compressed air EEBD, comprise the pressure-reducing valve that is connected with gas cylinder and personnel's respirator, it is characterized in that: described pressure-reducing valve is a piston reducing valve, comprise valve body, valve gap, piston, end socket and spring, described valve body has the high gun pressure district of bottom and the low gun pressure district on top, high gun pressure district is provided with cylinder interface, and be connected with low gun pressure district by high pressure inlet port, be provided with spring base in the low gun pressure district, piston is supported on the valve body by the spring that is installed in the spring base, valve gap covers at the valve body top, and in top land formation low-pressure cavity, low-pressure cavity communicates with low gun pressure district, and the end socket that mates with the high pressure inlet port gas outlet is housed in the bottom of piston, is provided with two low-pressure channels that are communicated with low tension switch and safety valve in the low gun pressure district.
2, isolation type compressed air EEBD according to claim 1, it is characterized in that: described end socket is the rubber end socket.
3, isolation type compressed air EEBD according to claim 1 and 2 is characterized in that: described personnel's respirator is a thermal radiation resistant seal head shell type respirator.
4, isolation type compressed air EEBD according to claim 1 and 2, it is characterized in that: at cylinder interface is manual fast interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201318820U CN201150728Y (en) | 2007-12-24 | 2007-12-24 | Isolation type compressed air escape respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201318820U CN201150728Y (en) | 2007-12-24 | 2007-12-24 | Isolation type compressed air escape respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201150728Y true CN201150728Y (en) | 2008-11-19 |
Family
ID=40126410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201318820U Expired - Fee Related CN201150728Y (en) | 2007-12-24 | 2007-12-24 | Isolation type compressed air escape respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201150728Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106955431A (en) * | 2017-05-29 | 2017-07-18 | 东台市江海救生消防设备有限公司 | Eebd |
| CN110013589A (en) * | 2013-10-30 | 2019-07-16 | 卡多医疗技术有限公司 | Valve system device |
-
2007
- 2007-12-24 CN CNU2007201318820U patent/CN201150728Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110013589A (en) * | 2013-10-30 | 2019-07-16 | 卡多医疗技术有限公司 | Valve system device |
| CN110013589B (en) * | 2013-10-30 | 2021-09-03 | 卡多医疗技术有限公司 | Valve system device |
| CN106955431A (en) * | 2017-05-29 | 2017-07-18 | 东台市江海救生消防设备有限公司 | Eebd |
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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: 20081119 Termination date: 20100125 |