CN106390317A - Bottle head valve for breathing gas bottle - Google Patents
Bottle head valve for breathing gas bottle Download PDFInfo
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- CN106390317A CN106390317A CN201610128934.2A CN201610128934A CN106390317A CN 106390317 A CN106390317 A CN 106390317A CN 201610128934 A CN201610128934 A CN 201610128934A CN 106390317 A CN106390317 A CN 106390317A
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- valve
- pressure
- diaphragm
- valve body
- gas cylinder
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
- A62B9/022—Breathing demand regulators
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a bottle head valve for a breathing gas bottle. The valve comprises a valve body, a gas bottle mounting joint, a gas bottle inflation joint, a biting mouth connector and an exhaust opening are formed in the valve body, the interior of the valve body is divided into a valve body high-pressure area and a valve body low-pressure area through a matched membrane pressing type pressure reduction valve, the gas bottle mounting joint is provided with a gas conveying channel directly communicated with the valve body high-pressure area, the gas bottle inflation joint is provided with an inflation channel, and the inflation channel is communicated with the gas conveying channel through a one-way valve element; the exhaust opening is provided with an exhaust membrane assembly in a matched manner. Due to the fact that the membrane pressing type pressure reduction valve is adopted, the rhythm of autonomous respiration of a person can be used for controlling the pressure reduction valve to be opened and closed, under the condition that gas in a gas storage device is isolated from the exterior environment, the gas directly enters the human body, and survival and escape in the toxic environment and survival in the underwater and anaerobic conditions can be achieved.
Description
Technical field
The invention discloses a kind of breathing gas cylinder bottle valve, especially a kind of directly the bottle valve of secondary pressure can need not be carried out using high-pressure gas device.
Background technology
Common respiratory organ can only be supplied using low pressure（Oxygen）, can directly breathe use when high-pressure gas device uses it is necessary to after the secondary pressure of high pressure valve, pressure loading valve weight weight, volume big it is necessary to through relevant speciality training or reading over explanation and can operate with.
In addition, existing breathing apparatus, after opening, can only persistently supply, waste the source of the gas that caisson provides, shorten the service life of caisson.
Further, when existing breathing apparatus use it is necessary to according to men and women, old and young to oxygen demand different situation, adjust the valve in gas storage equipment manually, to control gas output size it is necessary to through relevant speciality training or reading over explanation and can operate with.
Content of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of biting type breathing gas cylinder bottle valve, it is by using the rhythm of people's autonomous respiration, venting one's pent-up feelings then close and the air-supplying valve of caisson, incoming call then utilizes the negative pressure of human body respiration, opens the valve of caisson, makes the gas in caisson（Air or oxygen）In the case of completely cutting off with external environment, be directly entered human body, thus reach in toxic environment existence escape, under water with anaerobic situation under existence.
For realizing above-mentioned technical purpose, the present invention will take following technical scheme：
A kind of breathing gas cylinder bottle valve, including valve body；Valve body is provided with gas cylinder erection joint, inflating gas cylinder joint, be difficult to articulate interface and air vent, in valve body, valve body higher-pressure region, valve body low-pressure area are separated into by equipped diaphragm pressing type air relief valve, and diaphragm pressing type air relief valve includes reduce pressure diaphragm and relief pressure valve cartridge；Decompression diaphragm is arranged on valve body, and connects with atmospheric environment outside the diaphragm that reduces pressure, and inner side is then valve body low-pressure area；Decompression diaphragm is connected with relief pressure valve cartridge by pressing mechanism simultaneously；Gas cylinder erection joint has the gas distribution channel directly connecting with valve body higher-pressure region, and inflating gas cylinder joint has filling channel, and filling channel is connected with gas distribution channel by nonreturn valve core；Air vent is fitted with aerofluxuss diaphragm unit；When by be difficult to articulate interface air-breathing when, decompression diaphragm can deform according to human body respiration, and then promote relief pressure valve cartridge to be moved by pressing mechanism, diaphragm pressing type air relief valve is caused to be in open mode, valve body higher-pressure region, valve body low-pressure area connect, and through aerofluxuss diaphragm unit from air vent unidirectional discharge excessive gas, meet inspiratory demand, conversely, diaphragm pressing type air relief valve is in closure state, valve body higher-pressure region, valve body low-pressure area is caused to be blocked.
As a further improvement on the present invention, valve body has air relief valve placing chamber；Diaphragm pressing type air relief valve also includes air relief valve core print seat body and spring；Air relief valve core print seat body is arranged on air relief valve and disposes intracavity；Relief pressure valve cartridge is movably positioned in the valve pocket of air relief valve core print seat body, and one end of relief pressure valve cartridge is touched with decompression diaphragm by pressing mechanism, and aforementioned pressing mechanism is installed on air relief valve core print seat body, and the other end then installs spring and air relief valve placing chamber between；When by be difficult to articulate interface air-breathing when, the air pressure of low-pressure area is less than atmospheric environment, decompression diaphragm caves in, so that thrust is applied to pressing mechanism, relief pressure valve cartridge is driven to move in air relief valve core print seat body, relief pressure valve cartridge and the valve pocket of air relief valve core print seat body is caused to there is annular gap, valve body low-pressure area is connected with valve body higher-pressure region.
As a further improvement on the present invention, described pressing mechanism is lever-type depression bar assembly, including long depression bar, short depression bar, long depression bar one end location and installation is in Pressure relief valve seat body, other end activity setting, and the movable end of long depression bar is touched with decompression diaphragm, and the location and installation end of long depression bar has and cuts somebody's hair；Short depression bar one end location and installation in Pressure relief valve seat body, the other end then activity setting, and the movable end of short depression bar touched with relief pressure valve cartridge, touch with cutting somebody's hair of duration depression bar and the movable end of short depression bar.
As a further improvement on the present invention, described short depression bar is arranged on air relief valve core print seat body by Double-layer elastic finger setting.
As a further improvement on the present invention, connected with atmospheric environment by the diaphragm protective case that reduces pressure outside described decompression diaphragm.
As a further improvement on the present invention, the outside of the filling channel of inflating gas cylinder joint is equipped with the dust-proof plug of inflation inlet, and inner side is then equipped with nonreturn valve core assembly.Thus reaching effect of gases at high pressure only import but no export.
As a further improvement on the present invention, described valve body higher-pressure region is fitted with pressure gauge.
As a further improvement on the present invention, described valve body is fitted with rupture disc assembly；This rupture disc assembly includes safety plate, and safety plate side is valve body higher-pressure region, and opposite side is connected with external environment；When the pressure extreme value that the air pressure of valve body higher-pressure region is higher than safety plate, disc rupture, realize the pressure release of valve body higher-pressure region.
As a further improvement on the present invention; described aerofluxuss diaphragm unit includes aerofluxuss diaphragm and aerofluxuss diaphragm protective case; described aerofluxuss membrane covered is in air vent; and aerofluxuss diaphragm protective case is arranged on outside aerofluxuss diaphragm; and the periphery of aerofluxuss diaphragm protective case is fixed on valve body, aerofluxuss diaphragm protection tackling has some through holes simultaneously.
As a further improvement on the present invention, the axis of gas cylinder erection joint is obliquely installed with respect to the relief pressure valve cartridge axis of diaphragm pressing type air relief valve, and inclination angle is 80 degree.
According to above-mentioned technical scheme, with respect to prior art, the present invention has the advantage that：
1., due to present invention employs air relief valve, therefore, it can directly carry out source of the gas using high-pressure gas device（Oxygen）Supply, needs not move through the secondary pressure of high pressure valve, easy to use；Meanwhile, bottle valve of the present invention is " overflow-type " structure, and therefore, unnecessary oxygen can be excluded from air vent automatically, without according to the user age, the difference of sex and control gas output size, expand the convenience that the present invention uses further；
2. the invention provides a kind of diaphragm pressing type air relief valve of special structure form, it carries out, by human body respiration, the Deformation control of diaphragm that reduces pressure, to reach the purpose controlling this decompression valve opening, therefore, avoid decompression or the throughput size of manual regulation and control caisson valve, avoid unnecessary waste, be effectively improved the Use Limitation of caisson, fully extend escape and the time of existence；In addition, eliminating conventional breathing apparatus after opening, the waste that can only persistently supply, make the problem that caisson service life substantially reduces；Further, present invention eliminates when conventional breathing apparatus use it is necessary to according to men and women, old and young to oxygen demand different situation, adjust the valve in gas storage equipment manually, to control gas output size.
Brief description：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 axis view；
Fig. 3 is the C-C sectional view of Fig. 1；
Fig. 4 is the D-D sectional view of Fig. 1；
Fig. 5 is the R direction view in Fig. 2；
In accompanying drawing：Valve body 1；O-ring a2；Pressure gauge 3；Decompression diaphragm gland 4；Decompression diaphragm protective case 5；Relief chamber body 6；Decompression diaphragm 7；Aerofluxuss diaphragm protective cover 8；Aerofluxuss diaphragm 9；O-ring b10；Air relief valve core print seat body 11；Relief pressure valve cartridge 12；Spring 13；Air relief valve core print seat 14；O-ring c15；O-ring d16；Holding screw 17；Short depression bar 18；Double-layer elastic pin 19；Long depression bar 20；Plug 21 in inflation inlet；O-ring e22；Nonreturn valve core 23；O-ring f24；Inflation inlet plug 25；Pressure gauge 26；Rupture disc assembly 27.
Specific embodiments：
Enforcement to technical scheme is described in further detail below in conjunction with the accompanying drawings：
As shown in Fig. 1 is to 5, breathing gas cylinder bottle valve of the present invention, including valve body；Including valve body, valve body is provided with inflating gas cylinder joint, gas cylinder erection joint, be difficult to articulate interface and air vent；In valve body, valve body higher-pressure region, valve body low-pressure area are separated into by equipped diaphragm pressing type air relief valve；Wherein：
Inflating gas cylinder joint, for being connected with external gas source, to be inflated to gas cylinder；In accompanying drawing 1,3, inflating gas cylinder joint includes filling channel, inflation inlet plug, plug and nonreturn valve core in inflation inlet, the outside of filling channel is equipped with inflation inlet plug, and inner side is then equipped with plug in inflation inlet, nonreturn valve core is fitted in inflation inlet plug and inflation inlet between plug, and filling channel is connected with the gas distribution channel of gas cylinder erection joint by nonreturn valve core.
Gas cylinder erection joint, for gas cylinder, especially gas cylinder connect；As shown in Figure 1, Figure 2, Figure 5, gas cylinder erection joint has the external screw thread being connected with gas cylinder, simultaneously, gas cylinder erection joint has the gas distribution channel directly connecting with valve body higher-pressure region, in addition, described gas cylinder erection joint is obliquely installed with respect to the axis of diaphragm pressing type air relief valve, and inclination angle is 80 °.
It is difficult to articulate interface, is difficult to articulate for connecting, be easy to people and carry out breathing use.
Air vent, is fitted with aerofluxuss diaphragm unit, for excluding unnecessary gas；As shown in Figure 2; described aerofluxuss diaphragm unit includes aerofluxuss diaphragm and aerofluxuss diaphragm protective case; described aerofluxuss membrane covered is in air vent; and aerofluxuss diaphragm protective case is arranged on outside aerofluxuss diaphragm; and the periphery of aerofluxuss diaphragm protective case is fixed on valve body, aerofluxuss diaphragm protection tackling has some through holes simultaneously.
Diaphragm pressing type air relief valve, as shown in Fig. 2 being arranged in set air relief valve placing chamber in valve body, including decompression diaphragm, pressing mechanism, air relief valve core print seat body, relief pressure valve cartridge and spring, pressing mechanism is lever depression bar assembly；Decompression diaphragm is arranged on valve body by the diaphragm gland that reduces pressure, and is connected with atmospheric environment by the diaphragm protective case that reduces pressure outside the diaphragm that reduces pressure, and inner side is then valve body low-pressure area；Relief pressure valve cartridge is movably positioned in the valve pocket of air relief valve core print seat body, and one end of relief pressure valve cartridge is touched with decompression diaphragm by depression bar assembly, and in air relief valve core print seat body, the other end then installs spring and air relief valve placing chamber between to aforementioned depression bar assembly location and installation；When by be difficult to articulate interface air-breathing when, the air pressure of low-pressure area is less than atmospheric environment, decompression diaphragm caves in, so that thrust is applied to depression bar assembly, relief pressure valve cartridge is driven to move in air relief valve core print seat body, relief pressure valve cartridge and the valve pocket of air relief valve core print seat body is caused to there is annular gap, valve body low-pressure area is connected with valve body higher-pressure region.In other words, when by be difficult to articulate interface air-breathing when, the decompression diaphragm of diaphragm pressing type air relief valve can deform according to human body respiration, and then promote the relief pressure valve cartridge of diaphragm pressing type air relief valve to be moved, diaphragm pressing type air relief valve is caused to be in open mode, valve body higher-pressure region, the connection of valve body low-pressure area, and through aerofluxuss diaphragm unit from air vent unidirectional discharge excessive gas, meet inspiratory demand, otherwise, diaphragm pressing type air relief valve is in closure state, causes valve body higher-pressure region, valve body low-pressure area to be blocked.
In addition, the decompression of described diaphragm pressing type air relief valve is by being equipped with air relief valve core print seat in air relief valve core print seat body, relief pressure valve cartridge is coordinated with air relief valve core print seat inner chamber, and relief pressure valve cartridge seat tool has throttling action simultaneously, so that diaphragm pressing type air relief valve has decompressing effect after valve.
Described depression bar assembly is lever-type structure, and including long depression bar, short depression bar, long depression bar one end location and installation is touched with decompression diaphragm in air relief valve core print seat body, other end activity setting, and the movable end of long depression bar, and the location and installation end of long depression bar has a that cuts somebody's hair；Short depression bar one end location and installation is in air relief valve core print seat body, the other end then activity setting, and the movable end of short depression bar is touched with valve element by the b that cuts somebody's hair, the a that cuts somebody's hair with duration depression bar is touched with the movable end of short depression bar, the b that cuts somebody's hair is fixed by screws on short depression bar, and adjusting screw can be passed through, to adjust cut somebody's hair b and the distance between the valve core that reduces pressure.
As shown in Fig. 1,4, described valve body higher-pressure region is fitted with pressure gauge；It is fitted with rupture disc assembly on described valve body；This rupture disc assembly includes safety plate, and safety plate side is valve body higher-pressure region, and opposite side is connected with external environment.
Operation principle
1st, high-pressure gas device（It is usually gas cylinder）Directly screw thread is connected with this device, by nonreturn valve core 23, O-ring f24, the unidirectional inflation inlet of inflation inlet plug 25, completes the inflation to high-pressure gas device, forms higher-pressure region.When depositing, higher-pressure region is locked by relief pressure valve cartridge 12, spring 13, air relief valve core print seat 14, and ensures the high pressure gas discharge under fortuitous event by rupture disc assembly 27.
2, during working condition, by being difficult to articulate or Enclosed mask is directly connected to human body respiration organ, the negative pressure being produced using human body air-breathing, make decompression diaphragm 7 to contract, press lever 20, touch short depression bar 18, Double-layer elastic pin 19, thus oppressing relief pressure valve cartridge 12 micro-shifting, open higher-pressure region, gases at high pressure slow release enters low-pressure area, short depression bar 18, Double-layer elastic pin 19, long depression bar 20 resets, relief pressure valve cartridge 12 is closed, reciprocal air demand every time, adjust suitably by Double-layer elastic pin 19 before dispatching from the factory, it is more than the gas of different human body use demand and the gas of characteristics of contaminated respiratory droplets during use, at any time by aerofluxuss diaphragm protective cover 8, the unidirectional discharge of aerofluxuss diaphragm 9.
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned technological means, also include the technical scheme being made up of above technical characteristic combination in any.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and modification completely in the range of without departing from this invention technological thought.The content that the technical scope of this invention is not limited in description it is necessary to determine its technical scope according to right.
Claims (10)
1. a kind of breathing gas cylinder bottle valve, including valve body；Valve body is provided with gas cylinder erection joint, inflating gas cylinder joint, be difficult to articulate interface and air vent, it is characterized in that, in valve body, valve body higher-pressure region, valve body low-pressure area are separated into by equipped diaphragm pressing type air relief valve, and diaphragm pressing type air relief valve includes reduce pressure diaphragm and relief pressure valve cartridge；Decompression diaphragm is arranged on valve body, and connects with atmospheric environment outside the diaphragm that reduces pressure, and inner side is then valve body low-pressure area；Decompression diaphragm is connected with relief pressure valve cartridge by pressing mechanism simultaneously；Gas cylinder erection joint has the gas distribution channel directly connecting with valve body higher-pressure region, and inflating gas cylinder joint has filling channel, and filling channel is connected with gas distribution channel by nonreturn valve core；Air vent is fitted with aerofluxuss diaphragm unit；When by be difficult to articulate interface air-breathing when, decompression diaphragm can deform according to human body respiration, and then promote relief pressure valve cartridge to be moved by pressing mechanism, diaphragm pressing type air relief valve is caused to be in open mode, valve body higher-pressure region, valve body low-pressure area connect, and through aerofluxuss diaphragm unit from air vent unidirectional discharge excessive gas, meet inspiratory demand, conversely, diaphragm pressing type air relief valve is in closure state, valve body higher-pressure region, valve body low-pressure area is caused to be blocked.
2. breathing gas cylinder bottle valve according to claim 1 is it is characterised in that valve body has air relief valve placing chamber；Diaphragm pressing type air relief valve also includes air relief valve core print seat body and spring；Air relief valve core print seat body is arranged on air relief valve and disposes intracavity；Relief pressure valve cartridge is movably positioned in the valve pocket of air relief valve core print seat body, and one end of relief pressure valve cartridge is touched with decompression diaphragm by pressing mechanism, and aforementioned pressing mechanism is installed on air relief valve core print seat body, and the other end then installs spring and air relief valve placing chamber between；When by be difficult to articulate interface air-breathing when, the air pressure of low-pressure area is less than atmospheric environment, decompression diaphragm caves in, so that thrust is applied to pressing mechanism, relief pressure valve cartridge is driven to move in air relief valve core print seat body, relief pressure valve cartridge and the valve pocket of air relief valve core print seat body is caused to there is annular gap, valve body low-pressure area is connected with valve body higher-pressure region.
3. breathing gas cylinder bottle valve according to claim 2, it is characterized in that, described pressing mechanism is lever-type depression bar assembly, including long depression bar, short depression bar, long depression bar one end location and installation is in Pressure relief valve seat body, other end activity setting, and the movable end of long depression bar touched with the diaphragm that reduces pressure, and the location and installation end of long depression bar has and cuts somebody's hair；Short depression bar one end location and installation in Pressure relief valve seat body, the other end then activity setting, and the movable end of short depression bar touched with relief pressure valve cartridge, touch with cutting somebody's hair of duration depression bar and the movable end of short depression bar.
4. breathing gas cylinder bottle valve according to claim 3 is it is characterised in that described short depression bar is arranged on air relief valve core print seat body by Double-layer elastic finger setting.
5. breathing gas cylinder bottle valve according to claim 1 is connected it is characterised in that passing through decompression diaphragm protective case outside described decompression diaphragm with atmospheric environment.
6. it is characterised in that the outside of the filling channel of inflating gas cylinder joint is equipped with the dust-proof plug of inflation inlet, inner side is then equipped with nonreturn valve core assembly to breathing gas cylinder bottle valve according to claim 1.
7. breathing gas cylinder bottle valve according to claim 1 is it is characterised in that described valve body higher-pressure region is fitted with pressure gauge.
8. breathing gas cylinder bottle valve according to claim 1 is it is characterised in that be fitted with rupture disc assembly on described valve body；This rupture disc assembly includes safety plate, and safety plate side is valve body higher-pressure region, and opposite side is connected with external environment；When the pressure extreme value that the air pressure of valve body higher-pressure region is higher than safety plate, disc rupture, realize the pressure release of valve body higher-pressure region.
9. breathing gas cylinder bottle valve according to claim 1; it is characterized in that; described aerofluxuss diaphragm unit includes aerofluxuss diaphragm and aerofluxuss diaphragm protective case; described aerofluxuss membrane covered is in air vent; and aerofluxuss diaphragm protective case is arranged on outside aerofluxuss diaphragm; and the periphery of aerofluxuss diaphragm protective case is fixed on valve body, aerofluxuss diaphragm protection tackling has some through holes simultaneously.
10. according to claim 1 breathing gas cylinder bottle valve it is characterised in that the axis of gas cylinder erection joint is obliquely installed with respect to the relief pressure valve cartridge axis of diaphragm pressing type air relief valve, and inclination angle be 80 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128934.2A CN106390317A (en) | 2016-03-07 | 2016-03-07 | Bottle head valve for breathing gas bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128934.2A CN106390317A (en) | 2016-03-07 | 2016-03-07 | Bottle head valve for breathing gas bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106390317A true CN106390317A (en) | 2017-02-15 |
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ID=58007107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610128934.2A Pending CN106390317A (en) | 2016-03-07 | 2016-03-07 | Bottle head valve for breathing gas bottle |
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| Country | Link |
|---|---|
| CN (1) | CN106390317A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109045500A (en) * | 2018-07-23 | 2018-12-21 | 东莞市先马机电有限公司 | A kind of breathing equipment |
| CN109237292A (en) * | 2018-11-28 | 2019-01-18 | 广东瑞霖特种设备制造有限公司 | A kind of emergency escape gas source |
| CN110143267A (en) * | 2019-06-19 | 2019-08-20 | 彭亚兵 | Portable diving breathing device |
| CN114344752A (en) * | 2021-12-29 | 2022-04-15 | 南通通易航天科技股份有限公司 | Aviation oxygen suppliment is with breathing aggregate unit |
| CN114403853A (en) * | 2022-02-21 | 2022-04-29 | 中国人民解放军总医院第一医学中心 | Portable dispersion residual qi lung function tester |
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| US4996982A (en) * | 1989-04-25 | 1991-03-05 | Submersible Systems, Inc. | Emergency breathing apparatus with holster released regulator valve |
| CN201338720Y (en) * | 2009-01-19 | 2009-11-04 | 成茂兴实业有限公司 | Conformation of secondary decompression standby air bottle head aspirator |
| CN202052225U (en) * | 2011-04-28 | 2011-11-30 | 华瑞科学仪器(上海)有限公司 | Supply valve for respirator |
| CN202289250U (en) * | 2011-11-01 | 2012-07-04 | 东台市东方船舶装配有限公司 | Air supply valve for respirator |
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2016
- 2016-03-07 CN CN201610128934.2A patent/CN106390317A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996982A (en) * | 1989-04-25 | 1991-03-05 | Submersible Systems, Inc. | Emergency breathing apparatus with holster released regulator valve |
| CN201338720Y (en) * | 2009-01-19 | 2009-11-04 | 成茂兴实业有限公司 | Conformation of secondary decompression standby air bottle head aspirator |
| CN202052225U (en) * | 2011-04-28 | 2011-11-30 | 华瑞科学仪器(上海)有限公司 | Supply valve for respirator |
| CN202289250U (en) * | 2011-11-01 | 2012-07-04 | 东台市东方船舶装配有限公司 | Air supply valve for respirator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109045500A (en) * | 2018-07-23 | 2018-12-21 | 东莞市先马机电有限公司 | A kind of breathing equipment |
| CN109237292A (en) * | 2018-11-28 | 2019-01-18 | 广东瑞霖特种设备制造有限公司 | A kind of emergency escape gas source |
| CN110143267A (en) * | 2019-06-19 | 2019-08-20 | 彭亚兵 | Portable diving breathing device |
| CN114344752A (en) * | 2021-12-29 | 2022-04-15 | 南通通易航天科技股份有限公司 | Aviation oxygen suppliment is with breathing aggregate unit |
| CN114344752B (en) * | 2021-12-29 | 2023-09-26 | 南通通易航天科技股份有限公司 | Breathing linkage device for aviation oxygen supply |
| CN114403853A (en) * | 2022-02-21 | 2022-04-29 | 中国人民解放军总医院第一医学中心 | Portable dispersion residual qi lung function tester |
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Application publication date: 20170215 |
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