CN213707744U - Portable oxygen-supplying respirator - Google Patents
Portable oxygen-supplying respirator Download PDFInfo
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- CN213707744U CN213707744U CN202022103590.4U CN202022103590U CN213707744U CN 213707744 U CN213707744 U CN 213707744U CN 202022103590 U CN202022103590 U CN 202022103590U CN 213707744 U CN213707744 U CN 213707744U
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Abstract
A portable oxygen supply respirator belongs to the technical field of molecular sieve pressure swing adsorption oxygen generation. The portable oxygen-supplying respirator comprises a first air pressurization cabin, a second air pressurization cabin, a compressed air buffer tank, a first adsorption cabin, a second adsorption cabin and an oxygen buffer cabin; the first adsorption cabin and the second adsorption cabin are both provided with oxygen generation molecular sieves, and the compressed air cache tank is respectively communicated with the two adsorption cabins through adsorption gas paths; the two adsorption cabins are respectively communicated with the oxygen cache cabin through a flushing gas circuit, the two adsorption cabins are respectively communicated with the oxygen cache cabin through an exhaust gas circuit, and the two adsorption cabins are respectively provided with a desorption gas circuit; each gas circuit is connected with the rotary gas circuit delay switch through an interface; the first air pressurizing cabin and the second air pressurizing cabin are respectively communicated with the compressed air cache tank through pipelines. The utility model discloses conveniently carry, can prepare oxygen in a flexible way.
Description
Technical Field
The utility model relates to a technology in the field of oxygen generation by molecular sieve pressure swing adsorption, in particular to a portable oxygen supply respirator.
Background
In the environment with thin air and oxygen deficiency, the normal activities of human beings are greatly limited, and for the mobility staff at high altitude and some patients with respiratory disorder, a timely and sufficient oxygen supply device is particularly important.
The oxygen-making principle of the oxygen-making equipment commonly used at present comprises a cryogenic method, a membrane separation method and a pressure swing adsorption method. Based on that the main components in the air are oxygen and nitrogen, the cryogenic separation method is to take the air as a raw material, compress, purify and exchange heat to prepare liquefied air, and obtain the oxygen after separating the nitrogen by rectification by utilizing the difference of the boiling points of liquid oxygen and liquid nitrogen in the liquefied air; the membrane separation method is to separate oxygen and nitrogen by using air as a raw material and utilizing different permeability of oxygen and nitrogen in a separation membrane under a certain pressure condition, so as to prepare oxygen; the pressure swing adsorption method is a cyclic process of separating oxygen and nitrogen by using air as a raw material and a zeolite molecular sieve as an adsorbent and utilizing the difference of the adsorption amounts of oxygen and nitrogen molecules in the air on the zeolite molecular sieve at normal temperature and low pressure.
However, the existing deep cooling method oxygen making equipment has larger volume and is inconvenient to carry; although the volume of the oxygen generator based on the membrane separation method can be reduced to a corresponding degree, the separation membrane has higher cost and is easy to damage, so the practicability is poor; the pressure swing adsorption oxygen production device has the advantages of simplicity, flexibility, low failure rate, easy maintenance, high automation degree, convenient operation, low energy consumption and the like, and is suitable for medium and small-scale air separation oxygen production occasions.
The land with wide range of members and over 3000 m altitude occupies about one sixth of the total area of the whole country. The plateau area has changeable climate, cold, strong wind and thin air, wherein the air is thin, the atmospheric pressure and the oxygen partial pressure are reduced, and the factors are the main factors influencing the human body by the plateau environment. The minority nationality living in the plateau area is adapted to the plateau environment, and for people living in low altitude areas for a long time, in the plateau area with the height of more than 3000 meters, as the oxygen content in the atmospheric pressure is reduced, the oxygen partial pressure of alveolar air and artery blood is correspondingly reduced, and the oxygen partial pressure gradient difference between capillary blood and cell mitochondria is reduced, thereby causing oxygen deficiency. The influence of oxygen deficiency on human body in plateau regions, in addition to cold, strong wind, rain and snow climate and strong ultraviolet irradiation in plateau regions, becomes a plurality of inducing and aggravating factors of plateau diseases. Timely oxygen supplement becomes an effective way to improve the adaptability of human body and relieve altitude stress, even save lives.
At present, various oxygen generating and supplying apparatuses are available to supply oxygen at a fixed place, but for mobile people, the conventional oxygen supplying apparatuses mainly include an oxygen bag, a small oxygen cylinder, and the like. Such devices require constant oxygenation and have limited oxygen capacity, are not convenient to use, and cannot guarantee oxygen supply. Therefore, research and development of portable oxygen generators are being pursued at home and abroad. Considering that the Pressure Swing Adsorption (PSA) method is high in oxygen generation concentration and does not produce harmful gas, the method is adopted by most portable oxygen generators at home and abroad.
The existing PSA oxygen generating equipment basically adopts a miniature air compression pump and various electromagnetic valves for air path control, the equipment can not be powered off, and when the electric power is insufficient or no electric power exists in the field, the oxygen generating equipment is useless and cannot provide oxygen support in emergency.
In order to solve the above problems existing in the prior art, the utility model discloses come from this.
SUMMERY OF THE UTILITY MODEL
The utility model provides a portable oxygen respirator that gives to the above-mentioned not enough that prior art exists, conveniently carries, can be nimble prepare oxygen.
The utility model comprises a first air compression chamber, a second air compression chamber, a compressed air buffer tank, a first adsorption chamber, a second adsorption chamber, an oxygen buffer chamber and a rotary gas circuit delay switch;
the first air compression cabin and the second air compression cabin are respectively communicated with the compressed air cache tank through pipelines; a first piston is arranged in the first air pressurization cabin and connected with a first connecting rod; a second piston is arranged in the second air pressurization cabin and connected with a second connecting rod; the first connecting rod and the second connecting rod are in transmission connection with a power mechanism;
the first adsorption cabin and the second adsorption cabin are both provided with oxygen generation molecular sieves, and the compressed air cache tank is respectively communicated with the two adsorption cabins through adsorption gas paths; the two adsorption cabins are respectively communicated with the oxygen cache cabin through a flushing gas circuit, the two adsorption cabins are respectively communicated with the oxygen cache cabin through an exhaust gas circuit, and the two adsorption cabins are respectively provided with a desorption gas circuit; the adsorption gas circuit, the desorption gas circuit, the flushing gas circuit and the exhaust gas circuit are respectively connected with the rotary gas circuit delay switch through interfaces.
Preferably, the flushing air path and the exhaust air path of the two adsorption cabins are connected through a pressure equalizing air path, and the pressure equalizing air path is connected with the rotary air path delay switch through an interface.
Preferably, the rotary gas circuit time delay switch comprises a plurality of disc outer sleeves and inner rotary pieces which are correspondingly arranged in the disc outer sleeves in a penetrating mode one by one, the disc outer sleeves are provided with gas circuit connecting ports, and the inner rotary pieces are provided with gas circuit channels; the inner rotating piece is fixedly connected through an inner rotating piece connecting shaft; and in the rotating process of the inner rotating piece, when the air channel on the inner rotating piece is communicated with the air channel connecting port on the disk outer sleeve, the air channel is opened, and when the air channel on the inner rotating piece is staggered with the air channel connecting port on the disk outer sleeve, the air channel is closed.
Preferably, the power mechanism comprises a rocker arm, and the rocker arm is in transmission connection with the first connecting rod, the second connecting rod and the inner rotating sheet connecting shaft. Preferably, one end of the rocker arm is provided with a driving gear, the first connecting rod and the second connecting rod are respectively eccentrically fixed on a driven gear, the driving gear is meshed with the driven gear, and the driving gear is in transmission connection with the inner rotary sheet connecting shaft through two groups of bevel gears; so that oxygen can be continuously supplied by manual operation without electric power. The rotating plate connecting shaft can also directly drive the inner rotating plate connecting shaft to rotate through the rocker arm, the rotating plate connecting shaft drives a driving gear to rotate through two groups of bevel gears, the driving gear is meshed with two driven gears, one of the two driven gears is eccentrically fixed with the first connecting rod, and the other one of the two driven gears is eccentrically fixed with the second connecting rod respectively.
Further preferably, the power mechanism comprises a battery, the battery is connected with a motor, and the motor is in transmission connection with the inner rotary sheet connecting shaft.
Preferably, the power mechanism comprises a battery, the battery is electrically connected with a motor, the motor is in transmission connection with a crankshaft, the crankshaft is connected with the first connecting rod and the second connecting rod, and meanwhile, the crankshaft is in transmission connection with the inner rotating sheet connecting shaft; the transmission connection can adopt any one of the existing methods, preferably, the transmission connection is in gear mesh. The rocking arm can also be arranged corresponding to the crankshaft or the inner rotating sheet connecting shaft, one of the crankshaft or the inner rotating sheet connecting shaft is driven to rotate by hand, and the other structure of the crankshaft or the inner rotating sheet connecting shaft is driven to rotate, so that the manual operation and the continuous oxygen supply are realized.
The time required by the opening and closing of the air channel in one rotation period can be adjusted by the proportion of the length of the designed air channel to the perimeter, and if a plurality of air channel channels are arranged on the inner rotating sheet, the opening and closing times of a single air channel can be controlled, and a plurality of air channels with the same opening and closing time sequence can also be controlled.
Preferably, the first adsorption cabin is communicated with the compressed air cache tank and is provided with a compressed air one-way valve and an outside air one-way valve; the second adsorption cabin is communicated with the compressed air cache tank and is provided with a compressed air one-way valve and an outside air one-way valve. Through setting up compressed air check valve and outside air check valve, it is one-way in the outside air suction air pressurization cabin, and it is also one-way that the air is impressed the compressed air buffer tank, consequently utilizes inside and outside pressure differential can work, does not need electric drive, also does not need sequential control.
The molecular sieve is preferably a lithium type molecular sieve, specifically an ultra-high efficiency lithium type molecular sieve, or a binder-free type fully zeolitic lithium type molecular sieve.
The battery can be various portable batteries, such as lithium ion rechargeable battery, nickel cadmium rechargeable battery, alkaline battery, hydrogen fuel cell, and the like.
Technical effects
Compared with the prior art, the utility model discloses following technological effect has:
1) through the arrangement of the rotary gas circuit delay switch, the first adsorption cabin and the second adsorption cabin sequentially perform adsorption, flushing, pressure equalizing, exhaust, desorption and other operations, so that continuous oxygen generation is realized;
2) the power can be provided by a plurality of modes such as a battery, a rocker arm and the like to prepare oxygen;
3) the portable type;
4) the oxygen production efficiency is 1-100L per minute.
Drawings
Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural view of the manual oxygen generation of the embodiment of the present invention;
fig. 3 is a schematic view of a connection structure between the rotary gas circuit delay switch and each gas circuit in embodiment 1;
fig. 4 is a schematic view of controlling the opening and closing of one air path in embodiment 1;
fig. 5 is a schematic view of controlling the opening and closing of two gas paths simultaneously in embodiment 1;
fig. 6 is a timing chart of the rotary gas circuit delay switch controlling each gas circuit in embodiment 1;
in the figure: the device comprises a crankshaft 1, a first driving wheel 2, a second driving wheel 3, a first connecting rod 4, a second connecting rod 5, a first piston 6, a second piston 7, a first air pressurization cabin 8, a second air pressurization cabin 9, a first one-way valve 10, a second one-way valve 11, an outside air one-way valve 12, an outside air one-way valve 13, a compressed air cache tank 14, a first adsorption valve 15, a second adsorption valve 16, a first desorption valve 17, a second desorption valve 18, a first adsorption cabin 19, a second adsorption cabin 20, a pressure equalizing valve 21, a first flushing valve 22, a second flushing valve 23, an oxygen cache cabin 24, a first exhaust valve 25, an oxygen outlet 26, a second exhaust valve 27, a rotary air path delay switch 28, a third driving wheel 29, a motor 31 and a fourth driving wheel 32;
a drive gear 40, a first driven gear 41, and a second driven gear 42;
a disk outer cover 281, an inner rotary plate 282 and an inner rotary plate connecting shaft 283.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, the present embodiment includes a first air compression chamber 8, a second air compression chamber 9, a compressed air buffer tank 14, a first adsorption chamber 19, a second adsorption chamber 20, an oxygen buffer chamber 24, and a rotary air path delay switch 28.
The compressed air buffer tank 14 is communicated with the first adsorption cabin 19 through a first adsorption gas path, the first adsorption gas path is provided with a first adsorption valve 15, the first adsorption cabin 19 is provided with a first desorption gas path, and the first desorption gas path is provided with a first desorption valve 17; the first adsorption cabin 19 is communicated with the oxygen cache cabin 24 through a first flushing gas path and a first exhaust gas path, the first flushing gas path is provided with a first flushing valve 22, and the first exhaust gas path is provided with a first exhaust valve 25.
The compressed air cache tank 14 is communicated with a second adsorption cabin 20 through a second adsorption gas path, the second adsorption gas path is provided with a second adsorption valve 16, the second adsorption cabin 20 is provided with a second desorption gas path, and the second desorption gas path is provided with a second desorption valve 18; the second adsorption cabin 20 is communicated with the oxygen cache cabin 24 through a second flushing gas path and a second exhaust gas path, the second flushing gas path is provided with a second flushing valve 23, and the second exhaust gas path is provided with a second exhaust valve 27.
The oxygen buffer chamber 24 is provided with an oxygen outlet 26 for supplying oxygen.
The first flushing air path, the first exhaust air path, the second flushing air path and the second exhaust air path are communicated through a pressure equalizing air path, and the pressure equalizing air path is provided with a pressure equalizing valve 21.
The adsorption gas circuit, the desorption gas circuit, the flushing gas circuit, the exhaust gas circuit and the pressure equalizing gas circuit are respectively connected with the rotary gas circuit delay switch through interfaces.
The rotary air path delay switch 28 comprises five disc outer sleeves 281 and inner rotary pieces 282 which are correspondingly arranged in the disc outer sleeves in a penetrating way one by one, the disc outer sleeves 281 are provided with air path connecting ports, and the inner rotary pieces 282 are provided with air path channels; the five inner rotary pieces 282 are fixedly connected through an inner rotary piece connecting shaft 283; and in the rotating process of the inner rotating piece, when the air channel on the inner rotating piece is communicated with the air channel connecting port on the disk outer sleeve, the air channel is opened, and when the air channel on the inner rotating piece is staggered with the air channel connecting port on the disk outer sleeve, the air channel is closed. The time required by the opening and closing of the air channel in one rotation period can be adjusted by the proportion of the length of the designed air channel to the perimeter, and if a plurality of air channel channels are arranged on the inner rotating sheet, the opening and closing times of a single air channel can be controlled, and a plurality of air channels with the same opening and closing time sequence can also be controlled.
The first air pressurization cabin 8 is communicated with a compressed air cache tank 14 through a pipeline, and a first one-way valve 10 is arranged on the pipeline; the first air pressurizing compartment 8 is also provided with an outside air check valve 12.
The second air pressurizing cabin 9 is communicated with a compressed air cache tank 14 through a pipeline, and a second one-way valve 11 is arranged on the pipeline; the second air pressurizing compartment 9 is also provided with an outside air check valve 13.
A first piston 6 is arranged in the first air pressurization cabin 8, and the first piston 6 is connected with a first connecting rod 4; a second piston 7 is arranged in the second air pressurization cabin 9, and the second piston 7 is connected with a second connecting rod 5; the first connecting rod 4 and the second connecting rod 5 are in transmission connection with a power mechanism.
The power mechanism comprises a motor 31 and a crankshaft 1, the motor 31 is electrically connected with a battery, the motor 31 is meshed with and drives the crankshaft 1 to rotate through a fourth transmission wheel 32 and a second transmission wheel 3, the crankshaft 1 is connected with a first connecting rod 4 and a second connecting rod 5, and meanwhile, the crankshaft 1 is meshed with and drives an inner rotating sheet connecting shaft 283 to rotate when the crankshaft rotates through a first transmission wheel 2 and a third transmission wheel 29.
Fig. 2 shows another power mechanism structure, which can be used for manual oxygen generation. The power mechanism comprises a rocker arm (not shown), wherein one end of the rocker arm is provided with a driving gear 40, a first connecting rod 4 is eccentrically fixed on a first driven gear 41, a second connecting rod 5 is eccentrically fixed on a second driven gear 42, the driving gear 40 is meshed with the first driven gear 41 and the second driven gear 42, and the driving gear 40 is in transmission connection with an inner rotary plate connecting shaft 283 through two groups of bevel gears; so that oxygen can be continuously supplied by manual operation without electric power. The power mechanism comprises a battery, the battery is connected with the motor 31, and the motor 31 is in transmission connection with the inner rotary sheet connecting shaft 283.
The first adsorption compartment 19 is used as the unit a, and the second adsorption compartment 20 is used as the unit B. The connection mode of the related gas circuits of the two units and the interface of the rotary gas circuit delay control switch is shown in figure 3.
In specific application, the opening and closing of one air path can be controlled, for example, only one air path in the unit a is controlled to be opened and closed, the air path is controlled to be opened for 2 seconds and closed for 8 seconds in sequence after one rotation for 10 seconds, and the opening and closing state is shown in fig. 4.
The two gas paths can be controlled to be opened and closed simultaneously, the gas path rotates for one circle within 10 seconds, one gas path in the unit A is sequentially controlled to be opened for 4.5 seconds and closed for 5.5 seconds, and then one gas path in the unit B is opened for 4.5 seconds and closed for 5.5 seconds; the combination of the open and closed states is shown in fig. 5.
The process of controlling the opening and closing of the multiple air paths simultaneously and controlling according to the time sequence is shown in fig. 6.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (4)
1. A portable oxygen-supplying respirator is characterized by comprising a first air pressurizing cabin, a second air pressurizing cabin, a compressed air buffer tank, a first adsorption cabin, a second adsorption cabin, an oxygen buffer tank and a rotary air path delay switch;
the rotary gas circuit delay switch comprises a plurality of disc outer sleeves and inner rotary pieces which are correspondingly arranged in the disc outer sleeves in a penetrating mode one by one, the disc outer sleeves are provided with gas circuit connecting ports, and the inner rotary pieces are provided with gas circuit channels; the inner rotating piece is fixedly connected through an inner rotating piece connecting shaft; in the rotating process of the inner rotating piece, when the air channel on the inner rotating piece is communicated with the air channel connecting port on the disk outer sleeve, the air channel is opened, and when the air channel on the inner rotating piece is staggered with the air channel connecting port on the disk outer sleeve, the air channel is closed;
the first air compression cabin and the second air compression cabin are respectively communicated with the compressed air cache tank through pipelines; a first piston is arranged in the first air pressurization cabin and connected with a first connecting rod; a second piston is arranged in the second air pressurization cabin and connected with a second connecting rod; the first connecting rod and the second connecting rod are in transmission connection with a power mechanism; the power mechanism comprises a rocker arm, and one end of the rocker arm is provided with a driving gear; the first connecting rod and the second connecting rod are respectively eccentrically fixed on a driven gear, a driving gear is meshed with the driven gear, and the driving gear is in transmission connection with the inner rotary sheet connecting shaft through two groups of bevel gears; oxygen is continuously supplied by manually operating the rocker arm under the condition of no electric power;
the first adsorption cabin and the second adsorption cabin are both provided with oxygen generation molecular sieves, and the compressed air cache tank is respectively communicated with the two adsorption cabins through adsorption gas paths; the two adsorption cabins are respectively communicated with the oxygen cache cabin through a flushing gas circuit, the two adsorption cabins are respectively communicated with the oxygen cache cabin through an exhaust gas circuit, and the two adsorption cabins are respectively provided with a desorption gas circuit; the adsorption gas circuit, the desorption gas circuit, the flushing gas circuit and the exhaust gas circuit are respectively connected with the rotary gas circuit delay switch through interfaces.
2. A portable oxygen-supplying respirator is characterized by comprising a first air pressurizing cabin, a second air pressurizing cabin, a compressed air buffer tank, a first adsorption cabin, a second adsorption cabin, an oxygen buffer tank and a rotary air path delay switch;
the rotary gas circuit delay switch comprises a plurality of disc outer sleeves and inner rotary pieces which are correspondingly arranged in the disc outer sleeves in a penetrating mode one by one, the disc outer sleeves are provided with gas circuit connecting ports, and the inner rotary pieces are provided with gas circuit channels; the inner rotating piece is fixedly connected through an inner rotating piece connecting shaft; in the rotating process of the inner rotating piece, when the air channel on the inner rotating piece is communicated with the air channel connecting port on the disk outer sleeve, the air channel is opened, and when the air channel on the inner rotating piece is staggered with the air channel connecting port on the disk outer sleeve, the air channel is closed;
the first air compression cabin and the second air compression cabin are respectively communicated with the compressed air cache tank through pipelines; a first piston is arranged in the first air pressurization cabin and connected with a first connecting rod; a second piston is arranged in the second air pressurization cabin and connected with a second connecting rod; the first connecting rod and the second connecting rod are in transmission connection with a power mechanism;
the power mechanism comprises a rocker arm which directly drives the inner rotating sheet connecting shaft to rotate, the inner rotating sheet connecting shaft drives a driving gear to rotate through two groups of bevel gears, the driving gear is meshed with two driven gears, one of the two driven gears is eccentrically fixed with the first connecting rod, and the other driven gear is eccentrically fixed with the second connecting rod respectively; oxygen is continuously supplied by manually operating the rocker arm under the condition of no electric power;
the first adsorption cabin and the second adsorption cabin are both provided with oxygen generation molecular sieves, and the compressed air cache tank is respectively communicated with the two adsorption cabins through adsorption gas paths; the two adsorption cabins are respectively communicated with the oxygen cache cabin through a flushing gas circuit, the two adsorption cabins are respectively communicated with the oxygen cache cabin through an exhaust gas circuit, and the two adsorption cabins are respectively provided with a desorption gas circuit; the adsorption gas circuit, the desorption gas circuit, the flushing gas circuit and the exhaust gas circuit are respectively connected with the rotary gas circuit delay switch through interfaces.
3. A portable oxygen-supplying respirator is characterized by comprising a first air pressurizing cabin, a second air pressurizing cabin, a compressed air buffer tank, a first adsorption cabin, a second adsorption cabin, an oxygen buffer tank and a rotary air path delay switch;
the rotary gas circuit delay switch comprises a plurality of disc outer sleeves and inner rotary pieces which are correspondingly arranged in the disc outer sleeves in a penetrating mode one by one, the disc outer sleeves are provided with gas circuit connecting ports, and the inner rotary pieces are provided with gas circuit channels; the inner rotating piece is fixedly connected through an inner rotating piece connecting shaft; in the rotating process of the inner rotating piece, when the air channel on the inner rotating piece is communicated with the air channel connecting port on the disk outer sleeve, the air channel is opened, and when the air channel on the inner rotating piece is staggered with the air channel connecting port on the disk outer sleeve, the air channel is closed;
the first air compression cabin and the second air compression cabin are respectively communicated with the compressed air cache tank through pipelines; a first piston is arranged in the first air pressurization cabin and connected with a first connecting rod; a second piston is arranged in the second air pressurization cabin and connected with a second connecting rod; the first connecting rod and the second connecting rod are in transmission connection with a power mechanism; the power mechanism comprises a battery, the battery is electrically connected with a motor, the motor is in transmission connection with a crankshaft, the crankshaft is connected with a first connecting rod and a second connecting rod, and meanwhile, the crankshaft is in transmission connection with an inner rotating sheet connecting shaft; the rocker arm is arranged corresponding to the crankshaft or the inner rotating sheet connecting shaft, and one of the crankshaft or the inner rotating sheet connecting shaft is driven to rotate manually, and then the other structure of the crankshaft or the inner rotating sheet connecting shaft is driven to rotate; oxygen is continuously supplied by manually operating the rocker arm under the condition of no electric power;
the first adsorption cabin and the second adsorption cabin are both provided with oxygen generation molecular sieves, and the compressed air cache tank is respectively communicated with the two adsorption cabins through adsorption gas paths; the two adsorption cabins are respectively communicated with the oxygen cache cabin through a flushing gas circuit, the two adsorption cabins are respectively communicated with the oxygen cache cabin through an exhaust gas circuit, and the two adsorption cabins are respectively provided with a desorption gas circuit; the adsorption gas circuit, the desorption gas circuit, the flushing gas circuit and the exhaust gas circuit are respectively connected with the rotary gas circuit delay switch through interfaces.
4. The portable oxygen-supplying respirator according to any one of claims 1 to 3, wherein the first adsorption compartment is in communication with a compressed air buffer tank and is provided with a compressed air check valve and an outside air check valve; the second adsorption cabin is communicated with the compressed air cache tank and is provided with a compressed air one-way valve and an outside air one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103590.4U CN213707744U (en) | 2020-09-23 | 2020-09-23 | Portable oxygen-supplying respirator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103590.4U CN213707744U (en) | 2020-09-23 | 2020-09-23 | Portable oxygen-supplying respirator |
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| CN213707744U true CN213707744U (en) | 2021-07-16 |
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| CN202022103590.4U Active CN213707744U (en) | 2020-09-23 | 2020-09-23 | Portable oxygen-supplying respirator |
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| CN (1) | CN213707744U (en) |
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