CN211798344U - Respirator oronasal mask - Google Patents

Abstract

The utility model relates to a respirator oronasal mask belongs to colliery, fire rescue technical field of fleing, has solved the problem that current respirator oronasal mask is bulky, weight is heavy and inconvenient to use. The respirator mask comprises a bottom support (11), a sealing main body (12) and a binding belt (13); the bandage (13) is arranged between the bottom support (11) and the sealing main body (12), and the bandage (13) is used for wearing the mouth-nose mask; the bottom support (11) is of an L-shaped structure and comprises a first connecting part and a second connecting part; the bottom support (11) is used for supporting the sealing body (12), and the sealing body (12) is used for fitting the face. The utility model discloses an oronasal mask bandage clamp is established between collet and sealed main part, need not additionally to add the bandage and detains the hole part, and the connector of collet and respiratory tube down, has reduced the occupation space of gas circuit and oronasal mask's weight, compact structure, small, is convenient for store and use.

Description

Respirator oronasal mask

Technical Field

The utility model relates to a colliery, fire rescue technical field that flees especially relate to a respirator oronasal mask.

Background

When accidents such as fire disasters occur, the trapped people in the scene can adopt self-rescue measures such as wet towels to cover the mouth and the nose or wearing a filtering type breathing mask or a compressed gas cylinder respirator, and can also adopt means such as wearing a chemical oxygen respirator to evacuate the scene and escape 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 respirator 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 occur due to the fact that the compressed air bottle type respirator belongs to a high-pressure container. Therefore, the chemical oxygen respirator is the breathing protection rescue equipment in the operation scenes of fire fighting, chemical engineering, coal mines, closed spaces and the like which are ideal 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, the mouth nose cup of current self-rescue respirator adopts stereoplasm collet structure, and not only bulky weight is heavy, leads to wearing the inconvenience, and the respiratory tube after the installation extends forward moreover, influences user's action.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention is directed to a respirator mask for solving the problems of large size, heavy weight and inconvenient use of the existing respirator mask.

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

a respirator mask comprises a bottom support, a sealing main body and a binding belt; the bandage is arranged between the bottom support and the sealing main body and is used for wearing the mouth-nose mask; the bottom support is of an L-shaped structure and comprises a first connecting part and a second connecting part; the collet is used for supporting sealed main part, and sealed main part is used for laminating facial.

Further, the interface of the first connecting part faces downwards; the front end of first connecting portion is provided with the adapter, and a pot head of adapter is established in the interface of first connecting portion, and the other end is connected with the breathing pipe of respirator.

Further, the second connecting portion is connected with the sealing main body, the second connecting portion is of a cylindrical structure, and threads are arranged on the outer surface of the second connecting portion.

Further, a first gasket is arranged between the bottom support and the binding band, and the first gasket is sleeved on the second connecting part; the surface of the first gasket facing the binding band is provided with a spherical bulge.

Furthermore, the front end of the sealing main body is a plane, and a mounting hole is formed in the plane.

Further, the diameter of the mounting hole is equal to the outer diameter of a second connecting portion, and the second connecting portion is sleeved in the mounting hole.

Further, the respirator oronasal mask further comprises a nut, the nut is arranged in the sealing main body, and the nut is connected with the second connecting portion.

Further, a second gasket is arranged between the nut and the sealing body.

Further, the front end of the binding band is provided with a through hole, the diameter of the through hole is not larger than the outer diameter of the second connecting portion, and the second connecting portion is sleeved in the through hole.

Furthermore, the respirator oronasal mask also comprises a sealing plug, and one end of the sealing plug is arranged in the second connecting part.

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

(1) the bandage is clamped between the bottom support and the sealing main body, so that the mouth-nose mask can be conveniently fixed to be closely fit with the face of a human body, the first connecting part and the interface of the breathing tube face downwards, the breathing tube can be conveniently hung, the breathing tube is prevented from being extended forwards too long when being worn, actions are influenced, and meanwhile, the space can be saved when a product is packaged;

(2) the bandage of the utility model is directly clamped between the bottom support and the sealing main body, and no additional buckle hole is needed to be arranged on the hard bottom support to be connected with the bandage, thus further reducing the volume of the mouth-nose mask;

(3) the first gasket is arranged between the second connecting part and the binding band, the first gasket is provided with the spherical bulge, the binding band can be compressed when the collet is connected with the sealing main body, and meanwhile, the nut is connected with the second connecting part, so that the connecting strength of the binding band is further reinforced, and the safety and firmness of the binding band are ensured when the binding band is worn;

(4) the utility model discloses a set up the through-hole that the second connecting portion passed first gasket, bandage in proper order, the mounting hole of sealed main part, second gasket and nut are connected, and the sealing plug setting leaks gas when having avoided the oronasal mask to use in the second connecting portion, has avoided the external gas to get into the oxygen generating tank and has reacted with the oxygen generating agent when not using simultaneously, causes the waste of oxygen generating agent.

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 view showing the overall structure of the oronasal mask of the present embodiment;

FIG. 2 is an exploded view showing the entire structure of the oronasal mask of this embodiment;

FIG. 3 is a schematic view of the respirator of the present embodiment in use;

FIG. 4 is a schematic view of the overall structure of the oxygen generating section in the present embodiment;

FIG. 5 is a sectional view showing the structure of the oxygen generating unit for removing oxygen in the oxygen generating section according to the present embodiment.

Reference numerals:

1-an oronasal mask; 11-bottom support; a 111-adapter; 12-a sealing body; 121-mounting holes; 13-binding band; 131-a through hole; 14-a first gasket; 15-a nut; 16-a second gasket; 17-a sealing plug; 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; 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; 4-air bag.

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. 1-5, discloses a respirator mask for oral cavity and nasal cavity, the mask for oral cavity and nasal cavity 1 comprises a bottom support 11, a sealing main body 12 and a binding band 13, the binding band 13 is arranged between the bottom support 11 and the sealing main body 12, the interface of the bottom support 11 and the breathing tube 2 is downward; the shoe 11 is used for supporting the sealing body 12 and is connected with the breathing tube 2, the sealing body 12 is used for fitting the face, and the bandage 13 is used for wearing the oronasal mask 1.

Compared with the prior art, the oral-nasal mask 1 consists of a hard bottom support 11 and a soft sealing main body 12, a head binding band 13 is clamped between the bottom support 11 and the sealing main body 12, so that the oral-nasal mask 1 is conveniently fixed to be closely fit with the face of a human body, the interface of the bottom support 11 and the breathing tube 2 faces downwards in a wearing state, the breathing tube 2 is convenient to hang, the phenomenon that the breathing tube 2 extends forwards too long to influence the action during wearing is avoided, and meanwhile, the space can be saved during product packaging; bandage 13 on the oral-nasal mask 1 directly presss from both sides between stereoplasm collet 11 and soft sealed main part 12, need not additionally set up the knot hole on stereoplasm collet 11 and is connected with bandage 13, further reduces the volume of oral-nasal mask 1.

Specifically, the bottom support 11 is provided with a first connecting part and a second connecting part, the second connecting part is vertically arranged on the first connecting part, the first connecting part and the second connecting part are in an L-shaped structure, the first connecting part is connected with the breathing tube 2, and the second connecting part is connected with the sealing main body 12; in this embodiment, the first connecting portion is a square housing, the second connecting portion is a cylinder, the cylinder is vertically disposed on a side surface of the square housing, and the first connecting portion and the second connecting portion are communicated to form a two-way structure.

The front end of the first connecting part is provided with an adapter 111, one end of the adapter 111 is arranged in the first connecting part, and the other end of the adapter 111 is connected with the breathing tube 2; specifically, adapter 111 one end sets up to squarely, and the cover is established in the square interface of first connecting portion, in order to avoid gas leakage, sets up the sealing washer in adapter 111 and the square interface junction outside of first connecting portion, or uses the adhesive to bond, and adapter 111's the other end sets up to cylindric, for the convenience of control adapter 111 and 2 male lengths of breathing tube, is provided with circumference step in the upper end of drum.

Be provided with first gasket 14 between collet 11 and the bandage 13, first gasket 14 cover is established on the second connecting portion, and the internal diameter of first gasket 14 equals the external diameter of second connecting portion, and for making bandage 13 fixed firm, the upper surface of first gasket 14 is provided with globular arch, and globular protruding face and bandage 13 contact, plain noodles and first connecting portion contact.

The sealing body 12 is made of silica gel and is matched with the outline of the face. In order to facilitate the installation of the binding band 13, the front end of the sealing main body 12 is provided with a plane, the plane is provided with a mounting hole 121, the diameter of the mounting hole 121 is equal to the outer diameter of the second connecting portion, and the second connecting portion is sleeved in the mounting hole 121.

In order to further compress the bandage 13, the oronasal mask 1 further comprises a nut 15, the nut 15 is arranged in the sealing main body 12, the nut 15 is connected with the thread arranged on the outer surface of the second connecting part in a matching way, the nut 15 is matched with the thread, under the action of the spherical bulge of the first gasket 14, the bandage 13 arranged between the bottom support 11 and the sealing main body 12 is firmer, and the sealing main body 12 is attached to the face more tightly when the oronasal mask is worn.

It should be noted that a second gasket 16 is disposed between the nut 15 and the sealing body 12 to further seal the connection position of the second connection portion and the sealing body 12, so as to avoid air leakage from the mounting hole 121. To reduce manufacturing costs, the first gasket 14 and the second gasket 16 are formed using a mold, and the surface of the second gasket 16 is also provided with a spherical projection that contacts the front face of the seal body 12 when installed.

It should be noted that, the oronasal mask 1 still includes sealing plug 17, sealing plug 17 one end sets up in the second connecting portion, the other end passes through the rope and is connected with upper cover 5, when the respirator does not use, the second connecting portion of oronasal mask 1 is stopped up to sealing plug 17, make outside gas unable entering respirator, the waste of oxygen generating agent has been avoided, when using the respirator, when tearing down upper cover 5, sealing plug 17 is torn down in step, the respirator gets into available state, moreover, the steam generator is simple in structure, high durability and convenient use.

The bandage 13 is made of elastic material, so that the mask has elasticity, and can be worn on the head directly when the oronasal mask 1 is used, thereby being convenient and fast. It should be noted that the width of the binding band 13 gradually increases from the front end of the sealing main body 12 to the back head, slots capable of allowing ears to pass through are arranged on both sides, and the binding band 13 wraps the back head and does not exceed the top of the head, so as to support the binding band 13 tightly and not obstruct the view.

In order to facilitate the connection of the binding band 13 and the second connecting portion, the front end of the binding band 13 is provided with a through hole 131, the diameter of the through hole 131 is not greater than the outer diameter of the second connecting portion, the binding band 13 is sleeved on the second connecting portion through the through hole 131, and when the bottom support 11 is connected with the sealing main body 12, the binding band 13 is compressed between the bottom support 11 and the sealing main body 12.

In this embodiment, the front end of the binding band 13 is provided with the through hole 131, the diameter of the through hole 131 is not larger than the outer diameter of the second connecting portion, the binding band 13 is fixed on the second connecting portion through the elasticity of the binding band 13 and is connected with the second connecting portion through the nut 15, and the first gasket 14 and the second gasket 16 are compressed under the action of the first gasket 14 and the second gasket 16, so that the head binding band 13 is firmly fixed, the structure is simple, the assembly and disassembly are convenient, and the stability of the oronasal mask 1 in the wearing process is ensured.

In the embodiment, the oronasal mask 1, the breathing tube 2, the oxygen generating module 3 and the airbag 4 form a gas circulation system of the self-rescue respirator, and specifically, 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 adapter 111 of the oronasal 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, and the oxygen generating agent is arranged in the oxygen generating tank 31. The breathing tube 2 is a flexible hose so that the respirator can be bent and twisted when packaged and used.

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.

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 respirator generates a local high temperature due to the heat released 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 the safety of the respirator during the use process and further improve the 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 respirator to cause local high temperature damage or stimulation to the respiratory system of the human body in other parts is avoided.

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 visually master the residual protection time of the respirator, the oxygen generating tank 31 is made of transparent materials, the materials for manufacturing the oxygen generating tank 31 cannot react with the oxygen generating agent and are high-temperature resistant, and the transparent materials have 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 reacted, 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 respirator 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 on the edge of the observation window, so that a user can visually master the residual protection time of the respirator, and the use safety of the self-rescue respirator 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 respirator 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 the harm to the user caused by the fact that the air with low oxygen concentration in the oxygen generating tank 31 and the air with high oxygen concentration and high temperature directly enter the breathing tube 2 from the air inlet tube 311, the first one-way valve 3221 is arranged in the second channel 322, and 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, so that the safety of the respirator in the using process is guaranteed.

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 respirator 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 respirator is used, and a user feels stuffy due to no supply of the fresh air after wearing the oronasal mask 1, the valve of the initial oxygen generating device 33 is opened to charge the internal compressed oxygen into the air bag 4 in the initial wearing period of the respirator, so that the respirator is firstly used by the user, and the comfort of the respirator 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 heat of the oxygen generating tank 31 from burning the human body in the use process of the respirator, 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 straps, so that the respirator 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 actions of a user are 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 respirator is distributed in front of the chest, and the respirator is small in structure after being folded, 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.

The utility model discloses a respirator oronasal mask, compact structure, small is convenient for store and use, has solved the problem of current respirator oronasal mask bulky, heavy and inconvenient use of weight.

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 respirator mask for mouth and nose is characterized by comprising a bottom support (11), a sealing main body (12) and a binding belt (13); the bandage (13) is arranged between the bottom support (11) and the sealing main body (12), and the bandage (13) is used for wearing the mouth-nose mask; the bottom support (11) is of an L-shaped structure and comprises a first connecting part and a second connecting part; the bottom support (11) is used for supporting the sealing body (12), and the sealing body (12) is used for fitting the face.

2. The respirator oronasal mask of claim 1 wherein the interface of the first connection portion faces downward; the front end of the first connecting portion is provided with an adapter (111), one end of the adapter (111) is sleeved in the interface of the first connecting portion, and the other end of the adapter is connected with a breathing tube of the respirator.

3. Respirator oronasal mask according to claim 1, characterized in that said second connection portion is connected to the sealing body (12), said second connection portion being of cylindrical configuration and provided with a thread on the outer surface.

4. The respirator oronasal mask according to claim 1, characterized in that a first gasket (14) is arranged between the shoe (11) and the strap (13), the first gasket (14) being sleeved on the second connecting portion; the surface of the first gasket (14) facing the binding band (13) is provided with a spherical bulge.

5. Respirator oronasal mask according to claim 1, characterized in that the front end of the sealing body (12) is a plane on which the mounting holes (121) are provided.

6. Respirator oronasal mask according to claim 5, wherein the diameter of the mounting hole (121) is equal to the outer diameter of the second connecting portion, which is housed inside the mounting hole (121).

7. Respirator oronasal mask according to claim 1, further comprising a nut (15), the nut (15) being arranged inside the sealing body (12), the nut (15) being connected to the second connection portion.

8. Respirator oronasal mask according to claim 7, characterized in that a second gasket (16) is provided between the nut (15) and the sealing body (12).

9. Respirator oronasal mask according to claim 1, characterized in that the front end of the strap (13) is provided with a through hole (131), the diameter of the through hole (131) being not greater than the outer diameter of the second connecting portion, which is housed in the through hole (131).

10. Respirator oronasal mask according to any one of claims 1-9, further comprising a sealing plug (17), one end of the sealing plug (17) being arranged in the second connecting portion.

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