CN211410757U - Chemical oxygen breathing device - Google Patents

Abstract

The utility model relates to a chemical oxygen breathing device belongs to colliery, fire rescue technical field of fleing, has solved the problem that current breathing device is bulky, carry and use inconvenience, breathing temperature is high, product validity can't be judged. The breathing device of the utility model comprises a mouth-nose mask (1), a breathing tube (2), an oxygen generating part (3), an air bag (4) and an upper cover (5), wherein the oxygen generating part (3) comprises an oxygen generating tank (31), a three-way unit (32) and an initial oxygen generating device (33); one end of the breathing tube (2) is connected with the mouth-nose mask (1), the other end is connected with the oxygen generating tank (31) through a tee unit (32), the tee unit (32) and the initial oxygen generating device (33) are both connected with the air bag (4), and the air bag (4) is connected with the oxygen generating tank (31). The utility model discloses a respiratory device is small, and it is low to produce the oxygen temperature, carries convenient to use, can confirm directly perceivedly simultaneously whether produce the oxygen agent and become invalid, and the security is high.

Description

Chemical oxygen breathing device

Technical Field

The utility model relates to a colliery, fire rescue technical field that flees especially relate to a chemical oxygen breathing device.

Background

When fire accidents happen in places such as coal mines, buildings and the like, disaster victims trapped in the site can adopt self-rescue measures such as wet towels covering the mouth and the nose or wearing a filtering type breathing mask or a compressed gas cylinder breathing device, and can also adopt means such as wearing a chemical oxygen breathing device to evacuate and escape from the site for self-rescue. However, the oxygen content in the air after violent combustion is low, toxic and harmful components in smoke are very complex, the wet towel and the filtering type breathing mask can only filter a few specific toxic gases, the expected filtering and purifying effect is difficult to achieve, the compressed air bottle type breathing device is not suitable for the environment with the oxygen concentration lower than 17%, the life safety of escape personnel is difficult to guarantee practically, and dangerous accidents such as explosion are easy to generate because the compressed air bottle type breathing device belongs to a high-pressure container. Therefore, the chemical oxygen breathing device is ideal breathing protection rescue equipment in the operation scenes of fire fighting, chemical engineering, coal mines, closed spaces and the like at present.

The chemical oxygen rescue breathing device is based on an air regenerant and CO which take superoxide as main components₂、H₂The device is developed by taking the principle that fresh air for breathing is generated by the O reaction, is not limited by the gas components of the surrounding atmosphere environment in use, and is an ideal emergency escape self-rescuer. However, when oxygen is generated by chemical oxygen, heat is released, so that the gas regeneration tank of the chemical oxygen rescue breathing apparatus generates local high temperature, which easily causes secondary damage to the wearing person. How to reduce the temperature of a gas regeneration tank of a chemical oxygen rescue breathing device and prevent the damage of local high temperature to human bodies in the using process becomes one of key technologies for the application and popularization of the chemical oxygen rescue breathing device.

Meanwhile, most of the existing chemical oxygen breathing devices are in square box type designs, so that the breathing device is uncomfortable to carry, complex to wear and use, poor in safety, large in influence of pipelines and masks on actions, and incapable of visually judging whether the products fail or reach the upper limit of protection time.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention aims to provide a chemical oxygen breathing apparatus for solving the problems of large volume, inconvenient carrying and use, high breathing temperature and incapability of judging the effectiveness of the existing breathing apparatus.

The purpose of the utility model is mainly realized through the following technical scheme:

a chemical oxygen breathing device comprises an oronasal mask, a breathing tube, an oxygen generating part, an air bag and an upper cover, wherein the oxygen generating part comprises an oxygen generating tank, a three-way unit and an initial oxygen generating device; one end and the oronasal mask of respiratory tube are connected, and the other end passes through the tee bend unit and is connected with oxygen generating tank, and tee bend unit and initial stage oxygen generating device all are connected with the gasbag, and the gasbag is connected with oxygen generating tank.

Furthermore, the oxygen generating tank is of a flat hemispherical structure and comprises an air inlet pipe, an air outlet pipe and a partition plate;

the air inlet pipe and the air outlet pipe are respectively arranged at two ends of the top of the oxygen generating tank, the partition plates are arranged in the oxygen generating tank, and the plurality of partition plates are arranged in a vertically staggered mode.

Further, the three-way unit comprises a first channel, a second channel and a third channel; the first channel and the second channel are communicated to form a pipeline; the third channel is arranged on the pipeline;

a first one-way valve is arranged in the second channel, and a quick connector is arranged at a port of the third channel.

Furthermore, the air bag is of a U-shaped structure, and the oxygen generating part is embedded in the U-shaped space;

and the air bag is provided with a one-way pressure release valve.

Furthermore, the oxygen generating part also comprises a connecting pipe, the connecting pipe is in an inverted L shape, one end of the connecting pipe is connected with the air outlet pipe, and the other end of the connecting pipe is connected with the air inlet of the air bag; the oxygen generating device is connected with the connecting pipe.

Furthermore, the first channel is connected with one end of the breathing tube, the second channel is connected with the air inlet pipe, the third channel is connected with the air outlet of the air bag, and the air outlet pipe is connected with the air inlet of the air bag through a connecting pipe.

Further, the oxygen generating part also comprises a heat insulation sleeve, and the heat insulation sleeve is sleeved outside the oxygen generating tank.

Furthermore, the upper cover is of a flat hemispherical structure, and the upper cover is connected with the oxygen generating tank to enable the breathing device to be in a round cake shape.

Further, the oronasal mask comprises a bottom support, a sealing ring and a binding band.

Furthermore, the chemical oxygen breathing device also comprises a belt buckle which is connected with the oxygen generating tank and the upper cover and can automatically fall off along with the separation of the oxygen generating tank and the upper cover.

Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:

(1) the utility model has the advantages that the breathing tube, the air bag and the oxygen generating tank are communicated by the three-way unit provided with the one-way valve, the air exhaled by the human body enters the air bag through the oxygen generating tank by only using one breathing tube, and then the air bag bypasses the oxygen generating tank to directly enter the circulating oxygen generating system of the human body, so that the structure for realizing the circulating oxygen generating by the traditional two-tube or three-tube is simplified, the use process is more convenient, and the action influence on a user is less; all the gas flows from one end of the air bag to the other end before entering a respiratory system of a human body, the gas flow stroke reaches the longest, the heat dissipation effect is better, meanwhile, the gas temperature is prevented from rising through the oxygen generating tank twice in the breathing process caused by reciprocating gas flow, and the comfort level of oxygen inhalation is improved;

(2) the utility model discloses a mouth nose cup comprises stereoplasm collet and soft sealing washer, presss from both sides between collet and the sealing washer and is equipped with the head bandage, makes things convenient for fixed mouth nose cup to make it and human face driving fit, and the interface of collet and respiratory tube is down under the wearing state, makes things convenient for dangling of respiratory tube, and respiratory tube forward extension overlength when avoiding wearing influences the action, can save space when the product packaging simultaneously; the bandage on the oral-nasal mask is directly clamped between the hard bottom support and the soft sealing ring, so that a buckling hole part is not required to be additionally arranged on the hard bottom support, and the bandage is not required to be connected with the buckling hole part, thereby further reducing the volume of the oral-nasal mask;

(3) the oxygen generating tank is internally provided with the baffle plates which are staggered up and down, so that air flows into the oxygen generating tank from the air inlet pipe and then flows to the air outlet pipe along the continuous S-shaped curve, thereby avoiding the waste of the oxygen generating agent in other spaces caused by the air flowing only between the shortest connecting lines of the air inlet and outlet pipe ports; meanwhile, the partition plate is made of a heat pipe material and is in contact with the wall surface of the oxygen generating tank, so that the heat in the oxygen generating tank can be conducted to the outer wall, and the internal reaction temperature is reduced;

(4) the oxygen generating pot of the utility model is of a flat hemispherical structure, and is matched with the upper cover of the flat hemispherical structure, so that the breathing device is in a round cake shape in a packaging state, and is more comfortable when being hung at waist and the like or hung in front of the chest for use;

(5) the utility model discloses an oxygen generating tank is provided with the observation window, and the edge of observation window is provided with the scale mark, through the scale at observation window edge, can estimate the remaining guard time in the use, lets the user grasp the remaining guard time of respiratory device directly perceivedly, ensures the safety in utilization of respiratory device of saving oneself;

(6) the utility model discloses a set up the primary oxygen generating device, the primary oxygen generating device stores compressed oxygen, the primary oxygen generating device communicates with the air inlet of gasbag, in the respirator wearing initial stage, open the valve of the primary oxygen generating device, fill the inside compressed oxygen into the gasbag, supply the user to use earlier, improved the comfort level when the breathing device uses;

(7) the utility model discloses an oxygen generating tank outside cover is equipped with the radiation shield, is provided with the heat dissipation buffering hole on the radiation shield, not only can play the heat dissipation effect, can also play certain cushioning effect when oxygen generating tank receives the striking, avoids oxygen generating agent damage in oxygen generating tank to produce the dust, is unfavorable for fully reacting with the air of low oxygen concentration, causes the waste of oxygen generating agent, and the dust simultaneously easily gets into the respiratory track along with the air, causes the injury for the user;

(8) the utility model adopts the vest type breathing air bag design, the air bag adopts the U-shaped structural design, the oxygen generating tank is embedded in the U-shaped space, so that the main body of the breathing device is distributed in front of the chest, the structure after being folded is small and exquisite, the wearing and the use are more comfortable and convenient, and the vest is provided with the reflective material, thereby facilitating rescue workers to determine the position of a trapped person;

(9) the utility model discloses a set up belt buckle, belt buckle sets up between upper cover and oxygen production jar, when needs carry respiratory device, passes the bellying of belt buckle with the waistband, can carry respiratory device on one's shoulder or shoulder between the waist, and when using respiratory device, when the packing clamp was relieved back upper cover and oxygen production jar separation, belt buckle was automatic to break away from with the product, need not to relieve the waistband and can use product, convenient and fast.

The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.

FIG. 1 is a schematic structural view of a breathing apparatus in a use state;

FIG. 2 is a schematic diagram of the structure of an oronasal mask of the breathing apparatus;

FIG. 3 is a schematic view of the oxygen generating portion of the respiratory device;

FIG. 4 is a sectional view showing the construction of an initial oxygen generating apparatus for removing oxygen from an oxygen generating part of a breathing apparatus;

FIG. 5 is a sectional view of the structure of the upper cover of the breathing device in a connection state with the oxygen generating tank;

FIG. 6 is a schematic diagram of a packaged configuration of the respiratory device;

fig. 7 is a schematic view of the overall structure of the breathing apparatus.

Reference numerals:

1-an oronasal mask; 11-bottom support; 12-a sealing ring; 13-binding band; 2-a breathing tube; 3-an oxygen producing section; 31-an oxygen generating tank; 311-an air inlet pipe; 312-an air outlet pipe; 313-a spacer; 314-a tightening hanging ring; 315-a first card holder; 32-a tee unit; 321-a first channel; 322-a second channel; 3221-a first one-way valve; 323-a third channel; 3231-quick connector; 3232-a second one-way valve; 33-primary oxygen generating device; 34-a connecting tube; 35-a heat insulation sleeve; 351-a heat dissipation buffer hole; 352 — first projection; 4-air bag; 5, covering the upper cover; 51- "h" shaped port; 52-a buffer sleeve; 521-a slot; 522-a second protrusion; 53-packaging the collar; 6-belt buckle.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.

The utility model discloses a specific embodiment, as shown in fig. 1-7, discloses a chemical oxygen breathing device, which comprises an oronasal mask 1, a breathing tube 2, an oxygen generating part 3, an air bag 4, an upper cover 5 and an oxygen generating agent, wherein the oxygen generating part 3 comprises an oxygen generating tank 31, a three-way unit 32 and an initial oxygen generating device 33; one end of the breathing tube 2 is connected with the mouth nose mask 1, the other end is connected with the oxygen generating tank 31 through the tee unit 32, the tee unit 32 and the initial oxygen generating device 33 are respectively connected with the air bag 4, the air bag 4 is connected with the oxygen generating tank 31, the oxygen generating agent is arranged in the oxygen generating tank 31, and the upper cover 5 covers the oxygen generating part 3.

Compared with the prior art, in the embodiment, the three-way unit is adopted to communicate the expiration pipe, the air bag and the oxygen generating tank, the circulating oxygen generation that the gas exhaled by the human body enters the air bag through the oxygen generating tank and then directly enters the respiratory system of the human body from the air bag by bypassing the oxygen generating tank is realized by only using one breathing pipe, the structure for realizing the circulating oxygen generation by the traditional two-pipe or three-pipe is simplified, the use process is more convenient and the influence on the action of a user is less; meanwhile, the phenomenon that the temperature of the gas rises when the gas passes through the oxygen generating tank twice in the breathing process caused by reciprocating airflow is avoided, and the comfort level of oxygen inhalation is improved.

Oronasal mask 1 comprises stereoplasm collet 11 and soft sealing washer 12, it has head bandage 13 to press from both sides the dress between collet 11 and the sealing washer 12, convenient fixed oronasal mask 1 makes it with human facial driving fit, collet 11 makes things convenient for dangling of respiratory tube 2 down with respiratory tube 2's interface under the wearing state, respiratory tube 2 extends the overlength forward when avoiding wearing, influences the action, can practice thrift the space when product packaging simultaneously. Bandage 13 on the oral-nasal mask 1 directly presss from both sides between stereoplasm collet 11 and soft sealing washer 12, need not additionally set up on stereoplasm collet 11 and detain the hole and be connected with bandage 13, further reduces the volume of oral-nasal mask 1. In order to improve the clamping stability of the binding band, a gasket can be added between the hard bottom support 11 and the binding band 13, and the contact surface of the gasket and the binding band 13 is provided with a plurality of protruding micro points. The breathing tube 2 is a flexible hose so that the breathing apparatus can be bent and twisted during packaging and use.

The oxygen generating part 3 comprises an oxygen generating tank 31, a three-way unit 32, an initial oxygen generating device 33 and a connecting pipe 34, wherein the three-way unit 32 and the connecting pipe 34 are respectively arranged at two ends of the top of the oxygen generating tank 31, the initial oxygen generating device 33 is arranged between the three-way unit 32 and the connecting pipe 34, the three-way unit 32 is respectively connected with the breathing pipe 2, the oxygen generating tank 31 and the airbag 4, the initial oxygen generating device 33 is connected with the connecting pipe 34, and the connecting pipe 34 is respectively connected with the oxygen generating tank 31 and the airbag 4; in this embodiment, the three-way unit 32, the initial oxygen generating device 33 and the connection pipe 34 are provided on a symmetrical cross section of the oxygen generating tank 31.

The oxygen generating tank 31 is of a flat hemispherical structure and comprises an air inlet pipe 311, an air outlet pipe 312 and a partition 313, the air inlet pipe 311 and the air outlet pipe 312 are symmetrically arranged at two ends of the top of the oxygen generating tank 31, and the partition 313 is arranged inside the oxygen generating tank 311. In order to ensure that the oxygen generating agents at each part inside the oxygen generating tank 31 fully react, the partition plates 313 are arranged in the middle space corresponding to the air inlet pipe 311 and the air outlet pipe 312, a plurality of partition plates 313 are arranged at the top and the bottom of the oxygen generating tank 31, and in order to avoid the waste of the oxygen generating agents in the rest spaces caused by the fact that air only flows between the shortest connecting lines of the pipe openings of the air inlet pipe 311 and the air outlet pipe 312, the partition plates 313 are arranged in a vertically staggered mode.

In this embodiment, after flowing into the oxygen generating tank 31 from the air inlet pipe 311, the air with low oxygen concentration contacts with the oxygen generating agent along the process to react, and is converted into the air with high oxygen concentration, and flows out from the air outlet pipe 312, the baffle plates 313 arranged in a staggered manner from top to bottom make the air flow inside the oxygen generating tank 31 uniform, so as to ensure that the oxygen generating agent at each place can fully react, and the baffle plates 313 arranged in a staggered manner from top to bottom make the air flow into the oxygen generating tank 31 from the air inlet pipe 311 and then flow to the air outlet pipe 312 along a continuous S-shaped curve, so that the waste of the oxygen generating agent in the rest space caused by the fact that the air only flows between the shortest; meanwhile, the partition 313 contacts the wall surface of the oxygen generating tank 31, so that the heat inside the oxygen generating tank 31 can be conducted to the outer wall, and the internal reaction temperature can be reduced.

Considering that the oxygen generating tank 31 of the breathing apparatus generates a local high temperature due to heat release when oxygen is generated by the chemical oxygen method, which is likely to cause secondary damage to a user, the partition 313 is made of a heat pipe material in order to improve safety during the use of the breathing apparatus and further improve heat dissipation efficiency. The heat pipe is a heat transfer element which realizes heat transfer by depending on the phase change of working liquid in the heat pipe, fully utilizes the heat conduction principle and the rapid heat transfer property of a phase change medium, and quickly transfers the heat of a heating object to the outside of a heat source through the heat pipe, for example, the heat pipe is a copper-water heat pipe, a carbon steel-water heat pipe or a sodium heat pipe. Through the inside baffle 313 of making by the heat pipe material that sets up of oxygen generating tank 31, can conduct the wall to oxygen generating tank 31 with the inside heat of oxygen generating tank 31 rapidly, dispel the heat by radiation sleeve 35 again, reduced oxygen generating reaction temperature in the oxygen generating tank 31, the comfort level of temperature when having improved gas breathing has avoided the user to take place the problem of secondary damage because of inhaling high temperature gas.

In order to prevent the powder in the oxygen generating agent from flowing into the respiratory system of the human body to cause harm to the human body, a filter screen is arranged at the connecting position of the oxygen generating tank 31 and the air inlet pipe 311 and the air outlet pipe 312 respectively, specifically, the filter screen is made of a metal mesh and a quartz cotton piece, so that the phenomenon that the powder of the oxygen generating agent leaks through the air inlet pipe 311 and/or the air outlet pipe 312 in the storage process of the respiratory device to cause the damage of local high temperature to other parts or the stimulation to the respiratory system of the human body is.

In order to facilitate a user or an inspector to determine whether the oxygen generating agent fails or reaches the rated protection time and enable the user to intuitively master the residual protection time of the breathing device, the oxygen generating tank 31 is made of a transparent material, the material for manufacturing the oxygen generating tank 31 cannot react with the oxygen generating agent and is high-temperature resistant, and the transparent material has good thermal conductivity in order to facilitate the conduction of heat in the oxygen generating process; to meet certain industry standard specifications, illustratively, the coal industry, the oxygen generating tanks 31 are fabricated from a metallic material. In order to facilitate the observation of the state of the oxygen generating agent through the heat dissipation buffer holes 351 on the outer side heat insulation sleeve 35, the oxygen generating tank 31 is provided with an observation window, the observation window can be a strip-shaped single window or a dispersed point-shaped window, the distribution direction is consistent with the airflow direction, and the oxygen generating tank is sealed by glass.

In this embodiment, the color and the form change of the oxygen generating agent inside the oxygen generating tank 31 can be seen through the observation window, the oxygen generating agent is yellow when not reacting, the oxygen generating agent is white after completely reacting, and the reaction process is advanced along the airflow direction, so that whether the oxygen generating agent fails can be judged by observing the color of the oxygen generating agent through the observation window, and the safe and effective self-rescue breathing device is ensured. The edge of the observation window is provided with scale marks, and the residual protection time can be estimated in the use process through the scale marks at the edge of the observation window, so that a user can visually master the residual protection time of the breathing device, and the use safety of the self-rescue breathing device is ensured.

The three-way unit 32 comprises a first passage 321, a second passage 322 and a third passage 323, the first passage 321 is communicated with the second passage 322 to form a pipeline, and the third passage 323 is arranged on the pipeline communicated with the first passage 321 and the second passage 322; specifically, the first channel 321 and the second channel 322 are communicated to form a straight pipeline, the third channel 323 is vertically arranged in the middle of the straight pipeline communicated with the first channel 321 and the second channel 322, the three-way structure is convenient for the circular flow of gas, the expiration hose and the inspiration hose are combined into one hose, and the wearing structure is simplified; meanwhile, since the third channel 323 is perpendicular to the straight line channel formed by the first channel 321 and the second channel 322, compared with the arrangement at other angles, the structure occupies the minimum space, and the whole volume of the breathing device is reduced.

Specifically, the first passage 321 is connected with the breathing tube 2, a port of the first passage 321 is set to be a first stepped cylinder, the inner diameters of the first stepped cylinder are consistent, the outer diameter far away from the third passage 323 end is smaller than the outer diameter close to the third passage 323 end, the outer diameter of a small cylinder of the first stepped cylinder is equal to the inner diameter of a connector of the breathing tube 2, the first stepped cylinder is in interference fit with the connector of the breathing tube 2, and a sealing ring is sleeved on the outer side of the connecting position to avoid air leakage.

Specifically, the second channel 322 is connected with the air inlet pipe 311, a port of the second channel 322 is set to be a second stepped cylinder, the outer diameter of the second stepped cylinder is consistent, the inner diameter far away from the end of the third channel 323 is larger than the inner diameter close to the end of the third channel 323, the large inner diameter of the second stepped cylinder is equal to the outer diameter of the air inlet pipe 311, the second stepped cylinder is in interference fit with the air inlet pipe 311, and a sealing ring is sleeved on the outer side of the joint to avoid air leakage.

In order to avoid that the air with low oxygen concentration and the air with high oxygen concentration and high temperature in the oxygen generating tank 31 directly enter the breathing tube 2 from the air inlet tube 311 to cause injury to the user, the first one-way valve 3221 is arranged in the second channel 322, so that the air can only enter the oxygen generating tank 31 from the second channel 322 and cannot enter the second channel 322 from the oxygen generating tank 31 through the air inlet tube 311, and the safety of the breathing device in the using process is ensured.

Specifically, a quick connector 3231 is arranged at a port of the third channel 323, the third channel 323 is connected with an air outlet of the air bag 4 through the quick connector 3231, the port of the third channel 323 is set to be a third-step cylinder, the inner diameters of the third-step cylinder are consistent, the outer diameter far away from the straight-line pipeline end is smaller than the outer diameter close to the straight-line pipeline end, the outer diameter of a small cylinder of the third-step cylinder is equal to the inner diameter of an interface of the quick connector 3231, and the third-step cylinder is in interference fit with the interface of the quick connector 3231; a circumferential groove is formed in the large outer cylindrical surface of the third stepped cylinder, a circumferential clamping jaw is arranged at one end of the quick connector 3231, when the quick connector 3231 is connected with the third channel 323, the circumferential clamping jaw is clamped in the circumferential groove, and a sealing ring is sleeved outside the quick connector 3231 and the third channel 323 in a connecting mode, so that air leakage is avoided.

In order to avoid that the oxygen concentration of the fresh air in the air bag 4 is reduced because the air with low oxygen concentration in the three-way unit 3 enters the air bag 4, a second one-way valve 3232 is arranged in the quick connector 3231, and the air can only enter the three-way unit 3 from the air bag 4 but can not directly enter the air bag 4 from the three-way unit 3 through a third channel 323, so that the air bag 4 only contains the air with high oxygen concentration, and the safety of the breathing device in the use process is ensured.

It should be noted that a circular thin rubber pad is arranged at the other end of the quick connector 3231, and the rubber pad is bonded at the air outlet of the air bag 4 to form a closed air passage.

In this embodiment, the compressed oxygen is stored in the initial oxygen generating device 33, the initial oxygen generating device 33 is connected to the connecting pipe 34, and one end of the connecting pipe 34 is communicated with the air inlet of the air bag 4; because fresh air does not exist in the air bag 4 before the breathing apparatus is used, and a user feels stuffiness due to no supply of the fresh air after wearing the oronasal mask 1, before the breathing apparatus is worn, the valve of the initial oxygen generating device 33 is opened, the internal compressed oxygen is filled into the air bag 4 and is firstly used by the user, and the comfort level of the breathing apparatus in use is improved.

The connecting pipe 34 is arranged in an inverted L shape, one end of the connecting pipe 34 is arranged to be a fourth stepped cylinder connected with the air outlet pipe 312, and the other end is connected with the air inlet of the air bag 4; specifically, the outer diameters of the fourth stepped cylinders are consistent, the inner diameter close to the end of the air outlet pipe 312 is larger than the inner diameter far away from the end of the air outlet pipe 312, the large inner diameter of the fourth stepped cylinder is equal to the outer diameter of the air outlet pipe 312, the fourth stepped cylinder is in interference fit with the air outlet pipe 312, and a sealing ring is sleeved on the outer side of the joint to avoid air leakage; the other end of the connecting pipe 34 has a flange, which is bonded to the air inlet of the airbag 4 to form a closed air passage.

It should be noted that in order to make the compressed oxygen in the initial oxygen generator 33 directly fill the air bag 4, rather than enter the oxygen generating tank 31 through the outlet pipe 312, which results in the waste of the compressed oxygen or the blowing of the oxygen generating agent powder into the air bag 4 by the high-speed gas flow, the outlet end of the initial oxygen generator 33 forms a straight passage with one end of the connecting pipe 34 and the inlet of the air bag 4.

In order to avoid the heating and burning of the oxygen generating tank 31 to the human body of the breathing apparatus in the using process, the oxygen generating part 3 further comprises a heat insulation sleeve 35, the heat insulation sleeve 35 is sleeved on the outer side of the oxygen generating tank 31, the heat insulation sleeve 35 is made of soft materials, and exemplarily, the heat insulation sleeve 35 is made of porous rubber.

Further, in order to rapidly dissipate heat generated in the oxygen production process, the heat dissipation buffer hole 351 has been all opened to the front side surface and the bottom surface of the heat insulation sleeve 35, and the heat dissipation buffer hole 351 can rapidly dissipate heat inside the oxygen production tank 31, thereby reducing the breathing temperature and avoiding scalding the human body.

The setting of radiation shield 35 not only can play the radiating effect, can also play certain cushioning effect when producing oxygen jar 31 and receiving the striking, avoids producing the damaged dust that produces of oxygen agent of oxygen jar 31 inside, is unfavorable for the air fully reaction with low oxygen concentration, can not cause the waste of producing the oxygen agent, avoids the dust to get into the respiratory track along with the air easily simultaneously and causes the injury for the user.

It should be noted that the top of the oxygen generating tank 31 is provided with two neck strap rings, which are respectively located at the outer sides of the air inlet 311 and the air outlet 312, and the neck strap rings are connected with the neck strap, so that the breathing apparatus can be hung in front of the chest of a human body for use, the operation is convenient, the occupied space is small, and the action of a user is not affected.

In the embodiment, the check valves are arranged at the second channel 322 and the third channel 323, the first channel 321 is connected with the breathing tube 2, the second channel 322 is connected with the air inlet tube 311, the air outlet tube 312 is connected with one end of the connecting tube 34, the other end of the connecting tube 34 is connected with the air inlet of the air bag 4, and the air outlet of the air bag 4 is connected with the third channel 323; when a human body exhales, the low-oxygen-concentration gas exhaled by the user flows through the second channel 322 and the air inlet pipe 311 from the first channel 321 to enter the oxygen generating tank 31, the gas reacts with an oxygen generating agent in the oxygen generating tank 31 to generate fresh air, and the fresh air enters the air bag 4 through the air outlet pipe 312, the connecting pipe 34 and the air inlet; when a human body inhales, fresh air in the air bag 4 enters the three-way unit 32 through the air outlet and the quick connector 3231, finally enters the first channel 321, and is supplied to a user for breathing through the breathing tube 2.

In this embodiment, only utilize a respiratory tube 2 to realize the gaseous menstruation oxygen production jar 31 entering gasbag 4 of human exhalation promptly, bypass oxygen production jar 31 directly to get into human respiratory's circulating oxygen production from gasbag 4 again, the structure of circulating oxygen production has been realized to traditional two pipes or three tubular, the use is more convenient, it is littleer to user's action influence, the problem of producing the twice heating gas of oxygen agent in the reciprocating type gas circuit product has been avoided simultaneously, the comfort level of breathing has been improved.

In the embodiment, under the shunting and guiding action of the first one-way valve, the waste gas exhaled by the human body can only flow into the oxygen generating tank after entering the three-way pipe, and the waste gas in the oxygen generating tank reacts again to become fresh air which flows into the air bag through the air outlet pipe; fresh air flows to the air outlet from the air inlet of the air bag and enters the three-way pipe from the air outlet, the fresh air flows into the breathing pipe for breathing under the action of the second one-way valve when a human body inhales, and gas in the oxygen generating tank cannot directly enter the breathing pipe. Through the internal airflow direction switching of the three-way unit, the purpose that one breathing tube replaces an expiratory tube and an inspiratory tube and the gas circulation regeneration is achieved.

The air bag 4 is in a U-shaped structure after being inflated, the oxygen generating part 3 is embedded in the U-shaped space, so that the main body of the breathing device is distributed in front of the chest, and the folded structure is small and exquisite, and is more comfortable and convenient to wear and use; the air bag 4 comprises an air inlet and an air outlet, the air stroke between the air inlet and the air outlet is long, the air can be fully radiated, the temperature of the air sucked by a human body is low, and the experience is comfortable; the air bag 4 is provided with a reflective mark, so that trapped people can be easily found by rescue workers; the two sides of the air bag 4 are provided with the waistbands, so that the air bag 4 can be fixed in front of the chest of a human body, the air bag 4 can not be separated from the trunk of the human body in the process of movement or stooping, and the use is convenient.

The air bag 4 is also provided with a one-way pressure relief valve, when the pressure of the gas in the air bag 4 reaches a specified value, the one-way pressure relief valve is opened, the air in the air bag 4 is discharged to the outside, but the outside air cannot enter the air bag; when the pressure in the air bag 4 is recovered to be within the specified value, the one-way pressure release valve is automatically closed, and the pressure release is stopped. When the pressure in the air bag 4 is overlarge, the one-way pressure release valve automatically discharges redundant gas to the outside, so that a user can wear the air bag comfortably.

In this embodiment, when respiratory device is in the packing state, the oronasal mask 1, breathing tube 2, gasbag 4 all place in the 3 tops of oxygen production portion, are wrapped up by upper cover 5 and are cramped with oxygen generating tank 31, and upper cover 5 is flat hemisphere structure, and upper cover 5 makes the product be the cake form under the storage state with oxygen generating tank 31.

A sealing ring is arranged at the joint of the upper cover 5 and the oxygen generating tank 31 to ensure that all components are not influenced by the outside in a storage state and the oxygen generating agent is not invalid due to exposure; the edge of the upper cover 5 is an h-shaped opening 51, the sealing rubber ring is embedded in the h-shaped opening 51, the wall surface of the oxygen generating tank 31 extends upwards at the edge of the upper cover 5, the tail end of the oxygen generating tank is outwards turned, and the oxygen generating tank is inserted into the h-shaped opening 51 of the upper cover 5 to be tightly pressed with the sealing ring during sealing; the outer surface of the upper cover 5 is provided with a buffer sleeve 52, the buffer sleeve 52 is made of materials such as soft silica gel and the like, the buffer sleeve 52 and the soft heat insulation sleeve 35 on the outer surface of the oxygen generating tank 31 play a role of product anti-collision buffer, the buffer sleeve 52 is provided with a slotted hole 521, and the slotted hole 521 and the heat dissipation buffer hole 351 are symmetrical about the cross section of the breathing device, so that the appearance of the product in a packaging state is attractive.

In order to facilitate the fixing of the upper cover 5, the oxygen generating tank 31 is further provided with a tightening hanging ring 313, the tightening hanging ring 313 is arranged at two sides of the oxygen generating tank 31, and specifically, the tightening hanging ring 313 is arranged in two, and is symmetrical about the symmetrical cross section of the small area of the oxygen generating tank 31. The plane of symmetry of upper cover 5 is provided with the recess, and packing clamp 53 sets up in the recess, and when upper cover 5 was connected with oxygen generating tank 31, the both ends of packing clamp 53 hung with lock ring link 313 and detained, connect packing clamp 53 buckle position, cramp upper cover 5.

In order to be convenient for carrying the breathing device when not in use, the belt buckle 6 is arranged on the back of the breathing device, so that the breathing device is convenient to carry around when being carried around the waist. The belt buckle 6 is arranged between the upper cover 5 and the oxygen generating tank 31, and when the upper cover 5 is separated from the oxygen generating tank 31 after the packaging clamp 53 is released, the belt buckle 6 is automatically separated from the product, so that the product can be used without releasing the belt.

Specifically, the back of the oxygen generating tank 31 is provided with a first clamping seat 314, the back of the upper cover 5 is provided with a second clamping seat, the belt buckle 6 is in the shape of a door handle, and two ends of the belt buckle are respectively clamped in the first clamping seat 314 and the second clamping seat.

In order to secure the buckle 6 in use, the first protrusion 352 is provided on the back surface of the heat insulating sleeve 35, the second protrusion 522 is provided on the back surface of the cushion sleeve 52, and when the upper cover is fastened to the oxygen generating tank 31, the length of the protruding portion of the buckle 6 is equal to the shortest distance between the first protrusion 352 and the second protrusion 522.

In order to facilitate the use of the breathing apparatus without releasing the belt, the back surfaces of the heat insulating sleeve 35 and the cushion sleeve 52 are provided with grooves, and when the upper cover 5 and the oxygen generating tank 31 are in a non-fastened state, the end parts of the belt buckle 6 can move in the grooves, namely when the breathing apparatus is required to be used, the packaging clamp 53 is released, and when the upper cover 5 is separated from the oxygen generating tank 31, the belt buckle 6 can be released without releasing the belt. When the breathing device needs to be carried, the waist belt passes through the convex part of the belt buckle 6, and then the breathing device can be carried on the waist, so that the use is convenient and quick.

In this embodiment, in order to increase the firmness of the breathing apparatus when the breathing apparatus is worn on the waist, two grooves are provided on the back of the belt buckle 6, the first clamping seat 314, the second clamping seat, the heat insulation sleeve 35 and the buffer sleeve 52.

The sealing plug and the sealing film are connected to the upper cover 5 through a rope, the sealing plug and the sealing film automatically fall off along with the upper cover after the breathing device is opened, and the breathing device immediately enters an available state.

The utility model discloses a waist carries portable breathing apparatus on arm, conveniently carries the use, experiences comfortablely, and whether can audio-visual definite oxygen production agent became invalid simultaneously, solved current breathing apparatus bulky, wear to use complicated, breathe the problem that temperature is high, product validity can't be judged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (10)

1. A chemical oxygen breathing device is characterized by comprising an oronasal mask (1), a breathing tube (2), an oxygen generating part (3), an air bag (4) and an upper cover (5), wherein the oxygen generating part (3) comprises an oxygen generating tank (31), a three-way unit (32) and an initial oxygen generating device (33); one end of the breathing tube (2) is connected with the mouth-nose mask (1), the other end is connected with the oxygen generating tank (31) through a tee unit (32), the tee unit (32) and the initial oxygen generating device (33) are both connected with the air bag (4), and the air bag (4) is connected with the oxygen generating tank (31).

2. The chemical oxygen breathing device according to claim 1, wherein the oxygen generating tank (31) is of a flat hemispherical structure and comprises an air inlet pipe (311), an air outlet pipe (312) and a partition plate (313);

the air inlet pipe (311) and the air outlet pipe (312) are respectively arranged at two ends of the top of the oxygen generating tank (31), the partition plates (313) are arranged in the oxygen generating tank (31), and the partition plates (313) are arranged in a vertically staggered mode.

3. The chemical oxygen breathing device according to claim 2, wherein the three-way unit (32) comprises a first passage (321), a second passage (322) and a third passage (323); the first channel (321) and the second channel (322) are communicated to form a pipeline; the third channel (323) is disposed on the conduit;

a first one-way valve (3221) is arranged in the second channel (322), and a quick connector (3231) is arranged at a port of the third channel (323).

4. The chemical oxygen breathing device according to claim 1, wherein the air bag (4) is of a U-shaped structure, and the oxygen generating part (3) is embedded in the U-shaped space;

and a one-way pressure release valve is arranged on the air bag (4).

5. The chemical oxygen breathing device according to claim 3, wherein the oxygen generating part (3) further comprises a connecting pipe (34), the connecting pipe (34) is of an inverted L shape, one end of the connecting pipe (34) is connected with the air outlet pipe (312), and the other end is connected with the air inlet of the air bag (4); the oxygen generating device (33) is connected with the connecting pipe (34).

6. The chemical oxygen breathing device according to claim 5, wherein the first passage (321) is connected to one end of the breathing tube (2), the second passage (322) is connected to the air inlet tube (311), the third passage (323) is connected to the air outlet of the air bag (4), and the air outlet tube (312) is connected to the air inlet of the air bag (4) through a connecting tube (34).

7. Chemical oxygen breathing device according to claim 1, wherein the oxygen generating section (3) further comprises a heat insulating jacket (35), the heat insulating jacket (35) being provided outside the oxygen generating tank (31).

8. The chemical oxygen respirator of claim 1, wherein the upper cover (5) is of a flat hemispherical structure, and the upper cover (5) is connected with the oxygen generating tank (31) to make the respirator in a round cake shape.

9. Chemical oxygen breathing device according to claim 1, characterized in that the oronasal mask (1) comprises a shoe (11), a sealing ring (12) and a strap (13).

10. The chemical oxygen respirator according to any one of claims 1 to 9, further comprising a belt buckle (6), wherein the belt buckle (6) connects the oxygen generating tank (31) and the upper cover (5) and can be automatically removed by separation of the oxygen generating tank (31) and the upper cover (5).

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