CN203169857U - Positive pressure type air breathing apparatus for emergency rescue - Google Patents
Positive pressure type air breathing apparatus for emergency rescue Download PDFInfo
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- CN203169857U CN203169857U CN2013201633252U CN201320163325U CN203169857U CN 203169857 U CN203169857 U CN 203169857U CN 2013201633252 U CN2013201633252 U CN 2013201633252U CN 201320163325 U CN201320163325 U CN 201320163325U CN 203169857 U CN203169857 U CN 203169857U
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Abstract
The utility model discloses a positive pressure type air breathing apparatus for emergency rescue. The air breathing apparatus can be connected with internal air source and external air source, an air storage bottle is used as the internal air source, a pressure reduction device is arranged in the air outlet of the air storage bottle, the pressure reduction device is provided with a high pressure end interface and a medium pressure end interface, wherein the medium pressure end interface is communicated with an air source converting device, the external air source prepared for the air breathing apparatus is further communicated with the air source converting device, the air source converting device is communicated with an air supplying valve through an air guide tube, the air source converting device is only communicated with one air source once, and the automatic conversion and regulation of the air source converting device is realized through the pressure contrast between the external air source and the internal air source. By the adoption of the air breathing apparatus, before the rescue staff enter into a rescue site, the external air source can be fully utilized, thus the internal air source is saved, effective using time of the air breathing apparatus is prolonged, the external air source can not be limited to use in working places allowed by conditions, the rescue quality is improved, and the danger of rescue is reduced.
Description
Technical field
The utility model relates to a kind of emergency management and rescue positive-pressure type air respiratorresuscitator, is specifically related to a kind of air respiratorresuscitator that can external source of the gas.
Background technology
The positive-pressure type air respiratorresuscitator be a kind of be the isolation type respirator of respiratory gas source with compressed air, employed compressed air is stored in the gas bomb that carries, plenum system is positive-pressure type, be personnel when wearing respirator and breathe, whole respiratory system is in all the time and is isolated from the outside and internal pressure is higher than ambient pressure environment, extraneous toxic and harmful can't enter respiratory system inside in respiratory, guarantees safe and reliable respiratory protection.This equipment has been widely used in fire-fighting, chemical defence, anti-terrorism, has located to dash forward, and various fields such as emergency management and rescue.
Along with taking place frequently of China's rapid development of economy in the last few years and natural calamity, that emergency management and rescue work also presents is inter-trade, cross-cutting, the complicated development trend of cross-region.Though a large amount of work has been done at aspects such as the construction of emergency management and rescue system, accident dealing with calamity and strick precautions by China, but also be in the stage at the early-stage in all many-sides such as rescue technology tactics researchs, especially the emergency rescue technology Equipment Development with also have very big gap abroad.How to utilize present China rescue team to lack advanced, supporting existence conditionses such as rescue outfit, performance is as the effect of these existing weaponry and equipments of positive-pressure type air respiratorresuscitator to greatest extent, improving the rescue level, is the top priority of fast lifting rescue team fighting capacity in a short time.
Traditional positive-pressure type air respiratorresuscitator, mainly formed by parts such as high-pressure gas cylinder, pressure reducer, high-pressure air duct, warning whistle Pressure gauge, middle pressure wireway, steam supply valve, face shield, backboard braces, pressure reducer is provided with high-pressure side and intermediate voltage terminal, high-pressure side is connected with warning whistle Pressure gauge through high-pressure air duct, wherein Pressure gauge is for detection of the pressure of gas in the gas bomb, 90dB(A will be sent in the warning whistle when the pressure of gas in the gas bomb is lower than (5.5 ± 0.5) MPa) more than chimes of doom, the prompting user withdraw the danger zone.
Wherein high-pressure gas cylinder is the critical piece that stores the high pressure air that can supply breathing usefulness, the water capacity 6.8L, the nominal operation pressure 30MPa that press gas cylinder calculate, gas-storing capacity in the gas cylinder should be about 2000L under standard atmosphere condition, proportionately respiratory capacity 50L/min calculates under people's work state, and then personnel's theory of wearing this respirator also only is 40min the longest service time.But in actual use, gas bomb is after filling Compressed Gas, dressing when wearing, checkout procedure can be wasted certain tolerance, and should withdraw the disaster area according to national standard personnel when overbottom pressure in the gas bomb reaches 5～6MPa by force can not continue to use, then the actual of gas cylinder effectively uses pressure only as about 22MPa, add in personnel's rescue process because nervous, frightened, factors such as the acting amount is big, can sharply increase the human body respiration amount, thereby significantly reduced the effective storage life of respirator, many professional rescue personnels in the rescue process because the tolerance deficiency causes suffocating the example of injures and deaths of common occurrence.
The utility model content
Deficiency at above-mentioned prior art existence, the purpose of this utility model is to provide a kind of positive-pressure type air respiratorresuscitator that can external source of the gas, this respirator is in order to remedy the limited problem of inner source of the gas gas-storing capacity that carries, connect external air source by automatic transfer equipment, before the rescue personnel enters rescue site, can take full advantage of external air source, thereby saved inner source of the gas, prolonged the effective storage life of air respiratorresuscitator, external air source all can be used without restriction in operation place in conditions permit, improved the rescue quality, it is dangerous to have reduced rescue.
In order to achieve the above object, the utility model adopts following technical scheme to realize:
Emergency management and rescue positive-pressure type air respiratorresuscitator, described air respiratorresuscitator is provided with the face shield of wearing for the rescue personnel, face shield is provided with steam supply valve, described air respiratorresuscitator can connect inner source of the gas and external air source, this air respiratorresuscitator arranges gas bomb as inner source of the gas, the gas outlet of gas bomb is provided with pressure reducer, described pressure reducer is provided with high-pressure side interface and intermediate voltage terminal interface, described high-pressure side interface is communicated with warning whistle Pressure gauge, described intermediate voltage terminal interface is communicated with the source of the gas conversion equipment, the external air source that is equipped with for this air respiratorresuscitator also is communicated to described source of the gas conversion equipment, the source of the gas conversion equipment is communicated with described steam supply valve by wireway, this source of the gas conversion equipment is once only connected a kind of source of the gas, realizes the automatic conversion adjusting of source of the gas conversion equipment by the pressure contrast of external air source and inner source of the gas.
Further, described source of the gas conversion equipment is provided with valve body, valve body is to being outside equipped with three interfaces, connect the steam supply valve on inner source of the gas, external air source and the face shield respectively, the interface of inner source of the gas and external air source is oppositely arranged, between is provided with spool slip chamber, is provided with the spool that can reciprocatingly slide along two gas source interface directions in this chamber, and the compression area that described spool and external air source act on a side mutually is greater than acting on the compression area of a side mutually with inner source of the gas.
Further, the interface of described inner source of the gas and external air source, by the steam supply valve interface on the gas channel connection valve body, described spool is selected one by move left and right and is opened wherein gas channel, and closes another gas channel simultaneously respectively for both; Path at every gas channel is provided with check valve, check valve open direction be respectively inner source of the gas to steam supply valve, external air source to steam supply valve.
Further, when described inner source of the gas and external air source all were in operate as normal pressure, described spool slided towards inner source of the gas, closed inner gas source interface to the gas channel of steam supply valve interface, open the gas channel that external air source is interfaced to the steam supply valve interface, external air source namely flows into steam supply valve.
Further, when described external air source is lower than operate as normal pressure and inner source of the gas pressure greater than external air source pressure, described spool slides towards external air source, close external air source and be interfaced to the gas channel of steam supply valve interface, open inner gas source interface to the gas channel of steam supply valve interface, inner source of the gas namely flows into steam supply valve.
Further, described spool middle part is provided with the air-flow through hole, the air-flow through hole is communicated with the interface of external air source and inner source of the gas, the arrival end of described air-flow through hole is positioned at external air source one side, sealed by check valve at arrival end, when inner source of the gas with when external air source does not all flow into or only inner source of the gas flows into the source of the gas conversion equipment, this closed check valve air-flow through hole, when only external air source flows into the source of the gas conversion equipment, one-way valve opens air-flow through hole, then flow into pressure reducer and flow into warning whistle Pressure gauge by the high-pressure side interface, start the warning whistle.
Further, but upper valve body and following valve body are arranged in described spool split, two valve bodies connect by screw, described slip chamber is arranged on down in the valve body, described inner source of the gas, external air source interface are oppositely arranged on down valve body, described steam supply valve interface is arranged on upper valve body, and described gas channel also split is arranged at upper valve body and following valve body.
Further, the operate as normal pressure of described external air source is 0.6～1.0MPa, and inner source of the gas is 0.6～1.0MPa through the post-decompression operate as normal pressure of pressure reducer.
Further, when described external air source pressure≤0.1～0.3MPa and inner source of the gas were operate as normal pressure, spool was to external air source one side shifting, and inner source of the gas enters steam supply valve.
Further, described spool slip chamber is the T type, and described spool is the T type adaptive with chamber; Described spool is provided with sealing ring, to constituting sealing between spool and the sliding cavity locular wall, smears lubriation material on the sealing ring.This lubriation material can adopt the silicone grease lubriation material.
Emergency management and rescue of the present utility model positive-pressure type air respiratorresuscitator has the following advantages:
1. this respirator be mainly used in that concentration of narmful substance higher (volumetric concentration 〉=1% o'clock), harmful substance kind are not clear, in the surrounding air oxygen concentration less than 16% and air in contain the occasion that filtering type mask such as a large amount of carbon monoxide can't play a role; This respirator type belongs to the isolated type protection mask, no matter its advantage is kind, state and the concentration of toxic agent, all can be protected effectively, and its scope of application is very extensive.
2. this respirator disposes the external air source automatic transfer equipment, make respirator connect inner source of the gas and external air source simultaneously by this device, and preferentially select external air source for use, external air source all can be used without restriction in operation place in conditions permit, thereby save the inside source of the gas that respirator carries, saved the rescue personnel in wearing the self check process of respirator, in the road that leads to the rescue disaster area, the gas a large amount of in the process of wearing of wear complicated protective gears such as heavy biochemical defence suit wastes.Breathe when requiring when the pressure of external air source can not satisfy, automatic transfer equipment can automatically switch and be communicated with inner source of the gas, does not influence rescue personnel's breathing.
3. the external air source automatic transfer equipment stable performance of this respirator configuration, reliable is convenient to be used in combination with equipments such as heavy biochemical defence suit, mobile air supply sources, has higher suitability.
4. this respirator have that volume is little, quality is light, characteristics such as simple to operate, easy to maintenance, comfortable wearing, especially when connection or disconnecting external source of the gas, easy and simple to handle, safe, reliable, the personal breathing that is specially adapted to emergency management and rescue work under the complex environment protects.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 adopts the cutaway view of source of the gas conversion equipment for the utility model;
Fig. 3 is the cutaway view of pressure reducer that the utility model adopts.
Among Fig. 1: 1. face shield, 2. steam supply valve is pressed wireway in 3., 4. high-pressure air duct, 5. warning whistle Pressure gauge, 6. source of the gas conversion equipment, 7. braces, 8. external air source connection pipe, 9. cylinder valve, 10. pressure reducer, 11. gas bombs, 12. backboards.
Among Fig. 2: 13. upper valve bodies, 13-1. gas channel, 13-2. turriform spring, 13-3. steel ball, 13-4.O type circle, 13-5. gas channel, 14. screw, 15. times valve bodies, 15-1. gas channel, 16. inner source of the gas pipe, 17. conversion piston bodies, 17-1. sealing ring, 17-2. the air-flow through hole, 17-3. spring, 17-4. steel ball, 17-5.O the type circle, 17-6. hollow screw, 18. external air source pipes.
Among Fig. 3: 10-1. intermediate voltage terminal passage, 10-2. high-pressure side passage.
The specific embodiment
Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to structure of the present utility model, feature and effect describe in detail as after.
As Fig. 1, Fig. 2, Figure 3 shows that one of designed embodiment of the utility model, in this embodiment, emergency management and rescue are provided with backboard 12 with the positive-pressure type air respiratorresuscitator, backboard 12 is provided with braces 7, high-pressure gas cylinder 11 as inner source of the gas relies on backboard 12 fixing, the gas outlet of gas bomb 11 is provided with pressure reducer 10, because the nominal operation pressure of gas bomb 11 is 30MPa, and rescue personnel's eupnea air pressure is 0.6～1.0MPa, so need pressure reducer 10 to reduce pressure, post-decompression air-flow is breathed for the rescue personnel by the steam supply valve 2 that middle pressure wireway 3 enters on the face shield 1.When personnel are air-breathing, steam supply valve 2 will be opened for personnel automatically under suction function and be breathed, and steam supply valve 2 has air feed and positive-pressure function as required, and namely gas enters face shield 1 when personnel are air-breathing, is kept above the pressure of ambient air simultaneously in the face shield 1; When personnel exhaled, steam supply valve 2 is air feed not, and the gas of exhalation is discharged from the outlet valve on the face shield 1, and rule forms reciprocal respiration cycle process according to this.
The structure of pressure reducer 10 as shown in Figure 3, be provided with intermediate voltage terminal path 10-1 and high-pressure side path 10-2, high-pressure side path 10-2 is communicated with warning whistle Pressure gauge 5 by high-pressure air duct 4,90dB(A will be sent in the warning whistle when the pressure of gas in the gas bomb 11 is lower than (5.5 ± 0.5) MPa) more than chimes of doom, the prompting user withdraw the danger zone.
In the structure of conventional air respirator, the intermediate voltage terminal path 10-1 of pressure reducer 10 directly is communicated with steam supply valve 2, in order to prolong the effective storage life of air respiratorresuscitator, intermediate voltage terminal path 10-1 at first is communicated with source of the gas conversion equipment 6 in the structure of the utility model air respiratorresuscitator, the external air source that is equipped with for the utility model air respiratorresuscitator also is communicated to source of the gas conversion equipment 6, the combination of the external air source gas bomb that normally gas-storing capacity is bigger though can't bear, can tow with towing dolly.Source of the gas conversion equipment 6 also is provided with the 3rd interface and is communicated with steam supply valve 2 by middle pressure wireway 3, source of the gas conversion equipment 6 is once only connected a kind of source of the gas, or inner source of the gas or external air source, the pressure contrast in source of the gas conversion equipment 6 inside by external air source and inner source of the gas realizes that conversion is regulated automatically.
As shown in Figure 2, the valve body of source of the gas conversion equipment 6 is arranged to upper valve body 13 and following valve body 15, valve body is to being outside equipped with three interfaces, connect inner source of the gas respectively, steam supply valve 2 on external air source and the face shield 1, the interface of inner source of the gas and external air source is oppositely arranged, be inside source of the gas pipe 16 and the external air source pipe 18 among Fig. 2, between is provided with spool slip chamber, in this chamber, be provided with the spool that can reciprocatingly slide along two gas source interface directions, be the conversion piston body 17 among Fig. 2, the compression area that spool and external air source act on a side mutually is greater than acting on the compression area of a side mutually with inner source of the gas.
As shown in Figure 2, connect by screw 14 between upper valve body 13 and the following valve body 15, spool slip chamber is arranged on down in the valve body 15, and inner source of the gas, external air source interface are oppositely arranged on down valve body 15, and the steam supply valve interface is arranged on upper valve body 13.Spool slip chamber is the T type, and conversion piston body 17 is the T type adaptive with chamber; Conversion piston body 17 is provided with sealing ring, to constituting sealing between spool and the sliding cavity locular wall, in order to guarantee sliding effect, smears lubriation material at sealing ring, and this lubriation material can adopt the silicone grease lubriation material.
As shown in Figure 2, inner source of the gas pipe 16 and external air source pipe 18, both are respectively by the steam supply valve interface on the gas channel connection valve body, gas channel is the symmetrical expression layout at valve body, constitute the gas channel of external air source as the gas channel 15-1 of the above-below direction among Fig. 2, oblique gas channel 13-1, be provided with the anti-backflow sealing device in the porch of gas channel 13-1, this device is constituted by turriform spring 13-2, steel ball 13-3 and sealing ring 13-4's, and the direction of opening of anti-backflow sealing device is that external air source is to steam supply valve.The gas channel of inner source of the gas is a symmetrical structure, is provided with the anti-backflow sealing device equally, and its direction of opening is that inner source of the gas is to steam supply valve.Conversion piston body 17 utilizes the valve body of self to select one by move left and right and opens wherein gas channel, and closes another gas channel simultaneously.
Because air respiratorresuscitator of the present utility model is the purpose of design of preferentially using external air source, and for security consideration, when the rescue personnel prepares to enter rescue site, must open inner source of the gas, to prevent the unexpected disconnecting of external air source, so when inner source of the gas and external air source are communicated to source of the gas conversion equipment 6 simultaneously, and all be operate as normal pressure, normal conditions are that inner source of the gas pressure equals external air source pressure, change piston body 17 and slide towards inner source of the gas this moment, close inner gas source interface to the gas channel of steam supply valve interface, open the gas channel that external air source is interfaced to the steam supply valve interface, external air source namely flows into steam supply valve 2.The parameter that air respiratorresuscitator of the present utility model designs for this reason is: the operate as normal pressure of external air source is 0.6～1.0MPa, in to connect source of the gas be 0.6～1.0MPa through pressure reducer 10 post-decompression operate as normal pressure.
If the gas storage of external air source also is exhausted or when unexpected disconnecting takes place, inner source of the gas pressure is greater than external air source pressure, change piston body 17 and slide towards external air source this moment, close external air source and be interfaced to the gas channel of steam supply valve interface, open inner gas source interface to the gas channel of steam supply valve interface, inner source of the gas namely flows into steam supply valve 2.The parameter that air respiratorresuscitator of the present utility model designs for this reason is: when external air source pressure≤0.1～0.3MPa, conversion piston body 17 is to external air source one side shifting, and inner source of the gas enters steam supply valve 2.
If inner source of the gas is not opened or that air feed takes place is unusual and can not be communicated to source of the gas conversion equipment 6 time, only have external air source to be communicated to source of the gas conversion equipment 6 this moment, warning can be pointed out in the whistle of then reporting to the police, and this purpose of design realizes by following technological means:
As shown in Figure 2, conversion piston body 17 middle parts are provided with air-flow through hole 17-2, air-flow through hole 17-2 is communicated with the interface of external air source and inner source of the gas, the arrival end of air-flow through hole 17-2 is positioned at external air source one side, pass through spring 17-3 at arrival end, steel ball 17-4, O type circle 17-5, the combination of hollow screw 17-6 is sealed, when inner source of the gas and external air source all do not flow into, or when only inner source of the gas flows into source of the gas conversion equipment 6, sealing combination closed gas flow through hole 17-2, when only external air source flows into source of the gas conversion equipment 6, promote steel ball 17-4 compression spring 17-3 and open air-flow through hole 17-2, then flow into pressure reducer 10 and flow into warning whistle Pressure gauge 5 by high-pressure side path 10-2, start the warning whistle, should report to the police and to remove until the normal air feed of inner source of the gas.
In order to guarantee to change the sealing effect of 17 pairs of inner sources of the gas of piston body, the port of export at air-flow through hole 17-2 is provided with sealing ring 17-1, sealing ring 17-1 can be pressed against the end of inner source of the gas pipe 16, conversion piston body 17 utilizes the body of rod closed interior source of the gas interface tube of self to the gas channel of steam supply valve interface on the one hand, utilize sealing ring 17-1 closed interior source of the gas pipe 16 on the one hand, dual seal approach can improve the sealing effectiveness to inner source of the gas, has improved the effective rate of utilization of inner source of the gas.
Air respiratorresuscitator of the present utility model is by the improvement to traditional positive-pressure type air respiratorresuscitator, do not do in basic structure under the prerequisite of great change, increase the external air source automatic transfer equipment, make respirator when the self-contained high-pressure gas cylinder of connection provides source of the gas, connect external air source synchronously by the external air source automatic transfer equipment.Preferentially select external air source when the rescue personnel uses for use, when external air source disconnection or hypotony, when namely external air source pressure was lower than 0.1～0.3MPa, the respirator source of the gas was automatically converted to the self-contained gas cylinder source of the gas of respirator.This respirator is specially adapted to natural calamity, large-scale industrial accident, emergency management and rescue personal protection under the complex conditions such as burst public safety event, the use of the external air source that provides by the external air source automatic transfer equipment is provided its meaning, the absolute guard time that prolongs respirator, especially saved the rescue personnel in wearing the self check process of respirator, in the road that leads to the rescue disaster area, wearing the gas a large amount of in the process of wearing of complicated protective gears such as heavy biochemical defence suit wastes, make self-contained limited respirator source of the gas more effective, be applied to the emergency management and rescue of complex conditions reliably, increase substantially the safety in utilization of respirator and rescue personnel's fighting capacity.
Above describedly be construed as the utility model and be not limited to above embodiment just for the utility model is described, meet the various flexible form of the utility model thought all within protection domain of the present utility model.
Claims (10)
1. emergency management and rescue positive-pressure type air respiratorresuscitator, described air respiratorresuscitator is provided with the face shield of wearing for the rescue personnel, face shield is provided with steam supply valve, it is characterized in that, described air respiratorresuscitator can connect inner source of the gas and external air source, this air respiratorresuscitator arranges gas bomb as inner source of the gas, the gas outlet of gas bomb is provided with pressure reducer, described pressure reducer is provided with high-pressure side interface and intermediate voltage terminal interface, described high-pressure side interface is communicated with warning whistle Pressure gauge, described intermediate voltage terminal interface is communicated with the source of the gas conversion equipment, the external air source that is equipped with for this air respiratorresuscitator also is communicated to described source of the gas conversion equipment, the source of the gas conversion equipment is communicated with described steam supply valve by wireway, and this source of the gas conversion equipment is once only connected a kind of source of the gas, realizes the automatic conversion adjusting of source of the gas conversion equipment by the pressure contrast of external air source and inner source of the gas.
2. air respiratorresuscitator as claimed in claim 1, it is characterized in that, described source of the gas conversion equipment is provided with valve body, valve body is to being outside equipped with three interfaces, connect the steam supply valve on inner source of the gas, external air source and the face shield respectively, the interface of inner source of the gas and external air source is oppositely arranged, between is provided with spool slip chamber, be provided with the spool that can reciprocatingly slide along two gas source interface directions in this chamber, the compression area that described spool and external air source act on a side mutually is greater than acting on the compression area of a side mutually with inner source of the gas.
3. air respiratorresuscitator as claimed in claim 2, it is characterized in that, the interface of described inner source of the gas and external air source, both are respectively by the steam supply valve interface on the gas channel connection valve body, described spool is selected one by move left and right and is opened wherein gas channel, and closes another gas channel simultaneously; Path at every gas channel is provided with check valve, check valve open direction be respectively inner source of the gas to steam supply valve, external air source to steam supply valve.
4. air respiratorresuscitator as claimed in claim 3, it is characterized in that, when described inner source of the gas and external air source all are in operate as normal pressure, described spool slides towards inner source of the gas, close inner gas source interface to the gas channel of steam supply valve interface, open the gas channel that external air source is interfaced to the steam supply valve interface, external air source namely flows into steam supply valve.
5. air respiratorresuscitator as claimed in claim 3, it is characterized in that, when described external air source is lower than operate as normal pressure and inner source of the gas pressure greater than external air source pressure, described spool slides towards external air source, close external air source and be interfaced to the gas channel of steam supply valve interface, open inner gas source interface to the gas channel of steam supply valve interface, inner source of the gas namely flows into steam supply valve.
6. air respiratorresuscitator as claimed in claim 2, it is characterized in that, described spool middle part is provided with the air-flow through hole, the air-flow through hole is communicated with the interface of external air source and inner source of the gas, the arrival end of described air-flow through hole is positioned at external air source one side, sealed by check valve at arrival end, when inner source of the gas and external air source all do not flow into, or when only inner source of the gas flows into the source of the gas conversion equipment, this closed check valve air-flow through hole, when only external air source flows into the source of the gas conversion equipment, one-way valve opens air-flow through hole flows into pressure reducer then and flows into warning whistle Pressure gauge by the high-pressure side interface, starts the warning whistle.
7. air respiratorresuscitator as claimed in claim 3, it is characterized in that, but upper valve body and following valve body are arranged in described valve body split, two valve bodies connect by screw, described slip chamber is arranged on down in the valve body, described inner source of the gas, external air source interface are oppositely arranged on down valve body, and described steam supply valve interface is arranged on upper valve body, and described gas channel also split is arranged at upper valve body and following valve body.
8. air respiratorresuscitator as claimed in claim 2 is characterized in that, the operate as normal pressure of described external air source is 0.6～1.0MPa, and inner source of the gas is 0.6～1.0MPa through the post-decompression operate as normal pressure of pressure reducer.
9. air respiratorresuscitator as claimed in claim 8 is characterized in that, when described external air source pressure≤0.1～0.3MPa and inner source of the gas were operate as normal pressure, spool was to external air source one side shifting, and inner source of the gas enters steam supply valve.
10. air respiratorresuscitator as claimed in claim 2 is characterized in that, described spool slip chamber is the T type, and described spool is the T type adaptive with chamber; Described spool is provided with sealing ring, to constituting sealing between spool and the sliding cavity locular wall, smears lubriation material on the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201633252U CN203169857U (en) | 2013-04-03 | 2013-04-03 | Positive pressure type air breathing apparatus for emergency rescue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201633252U CN203169857U (en) | 2013-04-03 | 2013-04-03 | Positive pressure type air breathing apparatus for emergency rescue |
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| Publication Number | Publication Date |
|---|---|
| CN203169857U true CN203169857U (en) | 2013-09-04 |
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ID=49066614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201633252U Withdrawn - After Issue CN203169857U (en) | 2013-04-03 | 2013-04-03 | Positive pressure type air breathing apparatus for emergency rescue |
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| CN (1) | CN203169857U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182152A (en) * | 2013-04-03 | 2013-07-03 | 抚顺抚运安仪救生装备有限公司 | Positive pressure air respirator for emergency rescue |
| CN107131326A (en) * | 2017-07-06 | 2017-09-05 | 轩维技术（北京）有限公司 | Switching valve |
-
2013
- 2013-04-03 CN CN2013201633252U patent/CN203169857U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182152A (en) * | 2013-04-03 | 2013-07-03 | 抚顺抚运安仪救生装备有限公司 | Positive pressure air respirator for emergency rescue |
| CN103182152B (en) * | 2013-04-03 | 2016-01-20 | 抚顺抚运安仪救生装备有限公司 | Emergency management and rescue positive-pressure air respirator |
| CN107131326A (en) * | 2017-07-06 | 2017-09-05 | 轩维技术（北京）有限公司 | Switching valve |
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