CN106730465A - A kind of hand-held chemical oxygen emergency self-saving breathing equipment - Google Patents
A kind of hand-held chemical oxygen emergency self-saving breathing equipment Download PDFInfo
- Publication number
- CN106730465A CN106730465A CN201611219221.3A CN201611219221A CN106730465A CN 106730465 A CN106730465 A CN 106730465A CN 201611219221 A CN201611219221 A CN 201611219221A CN 106730465 A CN106730465 A CN 106730465A
- Authority
- CN
- China
- Prior art keywords
- breathing
- mask
- air
- mixed flow
- breathing bag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 97
- 239000000126 substance Substances 0.000 title claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000001301 oxygen Substances 0.000 title claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 238000011069 regeneration method Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 26
- 239000002131 composite material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 5
- 230000001172 regenerating effect Effects 0.000 claims description 5
- 230000000241 respiratory effect Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001815 facial effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 101100269850 Caenorhabditis elegans mask-1 gene Proteins 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/10—Valves
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a kind of hand-held chemical oxygen emergency self-saving breathing equipment, including：One-way breather valve A（4）, one-way breather valve B（5）, one-way breather valve C（8）, filtering sieve plate（9）, air regenesis agent（10）, breathing bag A（12）, breathing bag B（11）And relief valve（15）, also include：Breathing mask（1）, mixed flow surge tank（13）, handle（14）With air regenesis tank（7）.The present apparatus can effectively reduce device breathing back pressure using simple, and enhancing enters regeneration air consistence of composition in breathing bag, improves breathing quality, lifts the comfortableness of user of service.
Description
Technical field
The present invention relates to a kind of emergency self-saving breathing equipment, particularly a kind of hand-held chemical oxygen emergency self-saving breathing dress
Put.
Background technology
When fire accident occurs, the masses suffering from disaster for being stranded scene are simple except wet towel can be taken to cover mouth and nose etc.
Save oneself outside measure, can also be showed using filtering type breathing mask, chemical oxygen means such as breathing equipment of saving oneself are worn at this stage
Field is evacuated and escape is saved oneself.
Overanxious formula breathing mask can only filter a few specific toxic gas, be extremely difficult to expected filtration, purification effect
Really, the environment and to oxygen concentration less than 17% is not applied to yet, it is difficult to ensure the life security of escape personnel conscientiously.Chemical oxygen
Breathing equipment save oneself according to KO2It is the air regenesis agent of main component and CO2、H2O reaction generations can breathe and be with fresh air
Principle is developed, and it is a kind of ideal emergency escape self-rescuer using not limited by ambient atmosphere ambient gas composition.
But, wear-type chemical oxygen is saved oneself breathing equipment complex structure at this stage, device need to be assembled before, worn, sealed
Deng operation, process is cumbersome, and time is long, too high to non-pro masses suffering from disaster's use requirement, reduces product reality
With property, it is unfavorable for the popularization of product.
The content of the invention
Present invention aim at a kind of hand-held chemical oxygen emergency self-saving breathing equipment is provided, wear-type breathing equipment is solved
Assembled when using, worn, seal operation is complicated, practicality is low, the problem for being difficult to promote.
A kind of hand-held chemical oxygen emergency self-saving breathing equipment, including：One-way breather valve A, one-way breather valve B, unidirectionally exhale
Valve C, filtering sieve plate, air regenesis agent, breathing bag A, breathing bag B and relief valve are inhaled, is also included：Breathing mask, mixed flow are delayed
Rush tank, handle and air regenesis tank.
Breathing mask possesses 3 external interfaces, respectively mask air inlet A, mask air inlet B and mask gas outlet, face
Cover gas outlet and one-way sucting valve C, mask air inlet A are connected with one-way breather valve A, and mask air inlet B and one-way breather valve B connects
Connect.Breathing bag A air inlets and breathing bag B air inlets are connected with the side through hole of mixed flow surge tank two respectively.Breathing bag A outlets
Mouth is connected with mask air inlet A, and breathing bag B gas outlets are connected with mask air inlet B.Breathing mask is mouth and nose formula, inner side four
There is rubber blanket in week.
Air regenesis tank is cylindrical structure, and air regenesis tank upper end is threadedly coupled with the mask gas outlet of breathing mask.
Air regenesis tank inner upper and bottom are both provided with filtering sieve plate, and air regenesis agent is filled between filtering sieve plate.Mixed flow is delayed
Tank material is rushed for glass fiber reinforced plastics composite material, upper surface junction is cone, there is thin rib in conical surface outside, has viscous between thin rib
Mixture, mixed flow surge tank upper end is Nian Jie with air regenesis tank lower end, realizes the sealing between air regenesis tank and mixed flow surge tank.
There is through hole mixed flow surge tank both sides, and mixed flow surge tank is tightly connected with breathing bag A and breathing bag B respectively, mixed flow surge tank
Lower end is connected with handle.The material of breathing bag A and breathing bag B is silicon rubber, in breathing bag A and breathing bag B
Between have relief valve.
During work, operating personnel hold handle, and breathing mask is placed at facial mouth and nose, compress upwards, make breathing mask
The rubber blanket of inner side surrounding is fitted with face, starts eupnea.The gas of characteristics of contaminated respiratory droplets is from mask gas outlet by unidirectionally exhaling
Valve C air inlet regenerating tanks are inhaled, airflow uniform distribution shunting after the filtering sieve plate of upper strata loose structure is flowed through, it is uniform to flow into air again
In the gap of raw agent, air regenesis chemical reaction is carried out.Regeneration air after lower floor's filtering sieve plate by entering mixed flow surge tank, glass
Glass steel composite material mixed flow surge tank has preferable heat-proof quality, and the chemical heat produced during air regenesis will not be by air
Conduct to handle.During regeneration air divides two-way to enter breathing bag by mixed flow in mixed flow surge tank and after buffering, tidal air
Relief valve on capsule is used to adjust gas pressure intensity in air bag.During air-breathing, the regeneration air in breathing bag A is by one-way breather valve
A enters mask air inlet A, enters back into breathing mask；Regeneration air in breathing bag B enters mask by one-way breather valve B
Air inlet B, enters back into breathing mask.
The present invention is for fire scene complex environment, there is provided the hand-held escape for being easy to masses suffering from disaster to use is aided and supported certainly
Anxious protective device.The present apparatus can effectively reduce device breathing back pressure using simple, and enhancing enters regeneration air in breathing bag
Consistence of composition, improves breathing quality, lifts the comfortableness of user of service.Effective guarantee personnel are in toxic and harmful environment
Or the life security under the severe scene of fire environment such as anaerobic environment, the escape that disaster affected people is met conscientiously saves oneself demand.
Brief description of the drawings
A kind of structural representations of hand-held chemical oxygen emergency self-saving breathing equipment of Fig. 1.
1. one-way breather valve B of 2. mask air inlet A of breathing mask, 3. 4. one-way breather valve A of mask air inlet B 5.
6. the filterings of 7. air regenesis tank of mask gas outlet, the 8. one-way breather valve C 9. air regenesis agent of sieve plate 10.
The relief valve of 11. breathing bag B, 12. breathing bag A, 13. mixed flow surge tanks, 14. handle 15..
Specific embodiment
A kind of hand-held chemical oxygen emergency self-saving breathing equipment, including：It is one-way breather valve A4, one-way breather valve B5, unidirectional
Breather valve C8, filtering sieve plate 9, air regenesis agent 10, breathing bag A12, breathing bag B11 and relief valve 15, also include：Breathing
Mask 1, mixed flow surge tank 13, handle 14 and air regenesis tank 7.
Breathing mask 1 possesses 3 external interfaces, respectively mask air inlet A2, mask air inlet B3 and mask gas outlet
6, mask gas outlet 6 and one-way sucting valve C, mask air inlet A2 are connected with one-way breather valve A, and mask air inlet B3 is exhaled with unidirectionally
Air valve B is connected.Breathing bag A12 air inlets and breathing bag B11 air inlets are connected with 13 liang of side through hole of mixed flow surge tank respectively.
Breathing bag A12 gas outlets are connected with mask air inlet A2, and breathing bag B11 gas outlets are connected with mask air inlet B3.Breathing
Mask 1 is mouth and nose formula, and inner side surrounding has rubber blanket.
Air regenesis tank 7 is cylindrical structure, and the upper end of air regenesis tank 7 connects with the screw thread of mask gas outlet 6 of breathing mask 1
Connect.The inner upper of air regenesis tank 7 and bottom are both provided with filtering sieve plate 9, and air regenesis agent is filled between filtering sieve plate 9
10.The material of mixed flow surge tank 13 is glass fiber reinforced plastics composite material, and upper surface junction is cone, and there is thin rib in conical surface outside,
There is adhesive between thin rib, the upper end of mixed flow surge tank 13 is Nian Jie with the lower end of air regenesis tank 7, realizes air regenesis tank 7 and mixed flow
Sealing between surge tank 13.There is a through hole both sides of mixed flow surge tank 13, mixed flow surge tank 13 respectively with breathing bag A12 and breathing
Air bag B11 is tightly connected, and the lower end of mixed flow surge tank 13 is connected with handle 14.The material of breathing bag A12 and breathing bag B11 is equal
It is silicon rubber, there is relief valve 15 centre of breathing bag A12 and breathing bag B11.
During work, operating personnel hold handle 14, and breathing mask 1 is placed at facial mouth and nose, compress upwards, make respiratory surface
The rubber blanket for covering 1 inner side surrounding is fitted with face, starts eupnea.The gas of characteristics of contaminated respiratory droplets is from mask gas outlet 6 by single
To breather valve C8 air inlets regenerating tank 7, airflow uniform distribution shunting after the filtering sieve plate 9 of upper strata loose structure, uniform stream are flowed through
Enter in the gap of air regenesis agent 10, carry out air regenesis chemical reaction.Regeneration air after lower floor's filtering sieve plate 9 by entering mixed
Stream surge tank 13, glass fiber reinforced plastics composite material mixed flow surge tank 13 has preferable heat-proof quality, the change produced during air regenesis
Learning heat will not be by air transmitted to handle 14.Regeneration air enters in mixed flow surge tank 13 by a point two-way after mixed flow and buffering
Enter in breathing bag, the relief valve 15 on breathing bag is used to adjust gas pressure intensity in air bag.During air-breathing, in breathing bag A12
Regeneration air by one-way breather valve A4 enter mask air inlet A2, enter back into breathing mask 1；In breathing bag B11 again
Raw air enters mask air inlet B3 by one-way breather valve B5, enters back into breathing mask 1.
Claims (1)
1. a kind of hand-held chemical oxygen emergency self-saving breathing equipment, including：One-way breather valve A（4）, one-way breather valve B（5）, it is single
To breather valve C（8）, filtering sieve plate（9）, air regenesis agent（10）, breathing bag A（12）, breathing bag B（11）And relief valve
（15）, it is characterised in that also include：Breathing mask（1）, mixed flow surge tank（13）, handle（14）With air regenesis tank（7）；
Breathing mask（1）Possess 3 external interfaces, respectively mask air inlet A（2）, mask air inlet B（3）With mask outlet
Mouthful（6）, mask gas outlet（6）With one-way sucting valve C, mask air inlet A（2）It is connected with one-way breather valve A, mask air inlet B
（3）It is connected with one-way breather valve B；Breathing bag A（12）Air inlet and breathing bag B（11）Air inlet respectively with mixed flow surge tank
（13）Two side through hole are connected；Breathing bag A（12）Gas outlet and mask air inlet A（2）Connection, breathing bag B（11）Gas outlet
With mask air inlet B（3）Connection；Breathing mask（1）It is mouth and nose formula, inner side surrounding has rubber blanket；
Air regenesis tank（7）It is cylindrical structure, air regenesis tank（7）Upper end and breathing mask（1）Mask gas outlet（6）Spiral shell
Line is connected；Air regenesis tank（7）Inner upper and bottom are both provided with filtering sieve plate（9）, filter sieve plate（9）Between filling it is free
Gas regenerative agent（10）；Mixed flow surge tank（13）Material is glass fiber reinforced plastics composite material, and upper surface junction is cone, conical surface
There is thin rib in outside, there is adhesive, mixed flow surge tank between thin rib（13）Upper end and air regenesis tank（7）Lower end is bonded, and realizes empty
Gas regenerating tank（7）With mixed flow surge tank（13）Between sealing；Mixed flow surge tank（13）There are through hole, mixed flow surge tank in both sides（13）
Respectively with breathing bag A（12）With breathing bag B（11）It is tightly connected, mixed flow surge tank（13）Lower end and handle（14）Connection；
Breathing bag A（12）With breathing bag B（11）Material be silicon rubber, breathing bag A（12）With breathing bag B（11）In
Between have relief valve（15）；
During work, operating personnel hold handle（14）, by breathing mask（1）It is placed at facial mouth and nose, compresses upwards, makes respiratory surface
Cover（1）The rubber blanket of inner side surrounding is fitted with face, starts eupnea；The gas of characteristics of contaminated respiratory droplets is from mask gas outlet（6）Through
Cross one-way breather valve C（8）Air inlet regenerating tank（7）, flow through the filtering sieve plate of upper strata loose structure（9）Airflow uniform distribution divides afterwards
Stream, it is uniform to flow into air regenesis agent（10）Gap in, carry out air regenesis chemical reaction；Regeneration air is filtered by lower floor
Sieve plate（9）Enter mixed flow surge tank afterwards（13）, glass fiber reinforced plastics composite material mixed flow surge tank（13）There are preferable heat-proof quality, air
The chemical heat produced in regenerative process will not be by air transmitted to handle（14）；Regeneration air is in mixed flow surge tank（13）Interior warp
Point two-way enters in breathing bag after crossing the gentle punching of mixed flow, the relief valve on breathing bag（15）For adjusting gas pressure in air bag
By force；During air-breathing, breathing bag A（12）In regeneration air by one-way breather valve A（4）Into mask air inlet A（2）, then enter
Enter breathing mask（1）；Breathing bag B（11）In regeneration air by one-way breather valve B（5）Into mask air inlet B（3）,
Enter back into breathing mask（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219221.3A CN106730465A (en) | 2016-12-26 | 2016-12-26 | A kind of hand-held chemical oxygen emergency self-saving breathing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219221.3A CN106730465A (en) | 2016-12-26 | 2016-12-26 | A kind of hand-held chemical oxygen emergency self-saving breathing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106730465A true CN106730465A (en) | 2017-05-31 |
Family
ID=58926260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219221.3A Pending CN106730465A (en) | 2016-12-26 | 2016-12-26 | A kind of hand-held chemical oxygen emergency self-saving breathing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106730465A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758658A (en) * | 2019-03-11 | 2019-05-17 | 赵秀芳 | A kind of emergency rescue breathing first aid device and method |
| CN111346310A (en) * | 2020-03-24 | 2020-06-30 | 北京机械设备研究所 | Pressure-controllable respirator |
| CN111494762A (en) * | 2020-04-22 | 2020-08-07 | 中国人民解放军陆军军医大学第二附属医院 | Intelligent oxygen control respirator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB754305A (en) * | 1954-10-08 | 1956-08-08 | Mine Safety Appliances Co | Improvements in or relating to oxygen breathing apparatus |
| RU2290235C1 (en) * | 2005-04-20 | 2006-12-27 | Открытое акционерное общество "Корпорация "Росхимзащита" ( ОАО "Корпорация "Росхимзащита") | Breathing organs protection device |
| CN201090240Y (en) * | 2007-10-29 | 2008-07-23 | 湖南煤矿安全装备有限公司 | Portable isolation type chemical oxygen self-saving device |
| CN103405861A (en) * | 2013-07-17 | 2013-11-27 | 陕西斯达煤矿安全装备有限公司 | Chemical oxygen self-rescuer |
| CN103706054A (en) * | 2014-01-07 | 2014-04-09 | 北京安氧特科技有限公司 | Chemical oxygen fire protection self-rescue respirator capable of achieving heat dissipation and cooling easily |
| CN105920753A (en) * | 2016-07-14 | 2016-09-07 | 北京机械设备研究所 | Chemical oxygenemergency self-rescue breathing device |
| CN205814901U (en) * | 2016-07-14 | 2016-12-21 | 北京机械设备研究所 | A kind of Self-saving breather of chemical oxygen |
-
2016
- 2016-12-26 CN CN201611219221.3A patent/CN106730465A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB754305A (en) * | 1954-10-08 | 1956-08-08 | Mine Safety Appliances Co | Improvements in or relating to oxygen breathing apparatus |
| RU2290235C1 (en) * | 2005-04-20 | 2006-12-27 | Открытое акционерное общество "Корпорация "Росхимзащита" ( ОАО "Корпорация "Росхимзащита") | Breathing organs protection device |
| CN201090240Y (en) * | 2007-10-29 | 2008-07-23 | 湖南煤矿安全装备有限公司 | Portable isolation type chemical oxygen self-saving device |
| CN103405861A (en) * | 2013-07-17 | 2013-11-27 | 陕西斯达煤矿安全装备有限公司 | Chemical oxygen self-rescuer |
| CN103706054A (en) * | 2014-01-07 | 2014-04-09 | 北京安氧特科技有限公司 | Chemical oxygen fire protection self-rescue respirator capable of achieving heat dissipation and cooling easily |
| CN105920753A (en) * | 2016-07-14 | 2016-09-07 | 北京机械设备研究所 | Chemical oxygenemergency self-rescue breathing device |
| CN205814901U (en) * | 2016-07-14 | 2016-12-21 | 北京机械设备研究所 | A kind of Self-saving breather of chemical oxygen |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758658A (en) * | 2019-03-11 | 2019-05-17 | 赵秀芳 | A kind of emergency rescue breathing first aid device and method |
| CN109758658B (en) * | 2019-03-11 | 2021-06-04 | 赵秀芳 | A kind of emergency rescue breathing first aid device and method |
| CN111346310A (en) * | 2020-03-24 | 2020-06-30 | 北京机械设备研究所 | Pressure-controllable respirator |
| CN111494762A (en) * | 2020-04-22 | 2020-08-07 | 中国人民解放军陆军军医大学第二附属医院 | Intelligent oxygen control respirator |
| CN111494762B (en) * | 2020-04-22 | 2023-03-21 | 中国人民解放军陆军军医大学第二附属医院 | Intelligent oxygen control respirator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105920753B (en) | A kind of chemical oxygen emergency self-saving breathing equipment | |
| GB2405349A (en) | Resilient mask with improved seal | |
| CN106730465A (en) | A kind of hand-held chemical oxygen emergency self-saving breathing equipment | |
| GB2453134A (en) | Compact filter mask | |
| CN1933875B (en) | Respirators | |
| CN203750046U (en) | Fire protection filtering type self-saving breathing apparatus | |
| CN205814901U (en) | A kind of Self-saving breather of chemical oxygen | |
| CN106139441A (en) | A kind of virus-proof mask of recycling | |
| US10080913B2 (en) | Filter box assembly and filter unit | |
| KR101531197B1 (en) | Air breathing apparatus for emergency escape | |
| CN208865074U (en) | A kind of portable gas supply device and respiration auxiliary system | |
| CN211301827U (en) | Liquid dustproof gas mask with air flowing in one direction | |
| CN111617397B (en) | Independent convenient renew cartridge self-rescuer | |
| CN110152217A (en) | Airflow self-regulating healthy air purifier | |
| CN105310141B (en) | Two points five highly-breathable masks of anti-PM, mask or mask | |
| CN104489969A (en) | Silk mask | |
| CN206252750U (en) | Nose cup with breather valve and the respiration filtering device including nose cup | |
| CN203029855U (en) | Water layer separated type air purification mask | |
| CN203105691U (en) | Self-breathing type liquid filter dust mask | |
| CN105595465A (en) | An air curtain protection mouth mask | |
| CN205948213U (en) | Can produce breathing mask of oxygen | |
| CN106422095A (en) | Anti-overload air slow release chemical oxygen emergency rescue breathing device | |
| CN104983095B (en) | A kind of haze apnea resistance mask | |
| CN203736741U (en) | Combined type purification device for air outside nose | |
| US8555883B2 (en) | Emergency breathing bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |