CN111388892B

CN111388892B - Mining respirator

Info

Publication number: CN111388892B
Application number: CN202010215238.1A
Authority: CN
Inventors: 刘亮; 黄启福; 贾彦翔; 鲁檬; 耿铭
Original assignee: Beijing Machinery Equipment Research Institute
Current assignee: Beijing Machinery Equipment Research Institute
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2021-11-02
Anticipated expiration: 2040-03-24
Also published as: CN111388892A

Abstract

The invention relates to a mining respirator, belongs to the technical field of coal mines and fire rescue escape, and solves the problems that an existing respirator device is large in packaging volume and inconvenient to carry. The mining respirator comprises a respirator (1), wherein the respirator (1) comprises a supporting part (11) and a sealing part (12), the supporting part (11) is arranged on the outer side of the sealing part (12) and used for supporting the sealing part (12), and the sealing part (12) is used for fitting the face of a user; the support (11) is part of the shell of the respirator package. The mask comprises the supporting part and the sealing part, wherein the supporting part is used as one part of the packaging shell of the respirator, so that the occupied space of the respirator in a packaging state is reduced, and the resource waste and potential safety hazards caused by discarding the packaging shell in the using process are reduced.

Description

Mining respirator

Technical Field

The invention relates to the technical field of coal mine and fire rescue escape, in particular to a mining respirator.

Background

Compressed oxygen or chemical oxygen respirators typically have an oronasal mask that fits over the face of the person and allows fresh air generated by the respirator to pass through a hose into the oronasal mask and then into the person's respiratory tract for breathing. Some products, such as the mining chemical oxygen self-rescuer, do not adopt an oral-nasal mask, but use a mouth tool and a nose clip for breathing, the nose clip closes the nostrils of the human body, and after the mouth tool is bitten by teeth, the respiratory system of the human body is connected with the trachea of the respirator for breathing, and the wearing mode has less influence on the action of a person.

The mouth-nose mask or the mouth piece of all respirator products are sealed in the packing box in a standby state, and the packing needs to be removed for reuse when the mouth-nose mask or the mouth piece is used. The traditional respirator needs to open the package when in use, can take out an oral nasal mask or oral appliance after opening the cover of the packaging box, and the cover of the packaging box is generally directly discarded, so that a large amount of product packaging covers are discarded on the ground in a large-scale escape self-rescue scene, and people are possibly tripped in the escape process to cause more serious accidents.

In conclusion, the existing chemical oxygen and compressed oxygen respirator oronasal mask or oral appliance occupies a large volume, the upper cover of the packaging box needs to be discarded when in use, and resource waste and potential safety hazards exist.

Disclosure of Invention

In view of the above analysis, the present invention provides a mining respirator, which is used to solve the problems of large package volume and inconvenience in carrying of the existing respirator device.

The invention provides a mining respirator, which comprises a mask, wherein the mask comprises a supporting part and a sealing part, the supporting part is connected with the sealing part, and the supporting part is arranged on the outer side of the sealing part; the supporting part is used for supporting the sealing part, and the sealing part is used for fitting the face of a user; the support portion is part of the respirator package housing.

Further, the inboard of supporting part is provided with first breathing portion and second breathing portion, and first breathing portion and second breathing portion intercommunication.

Furthermore, the first breathing part is sleeved in the sealing part and is butted with the mouth of a user; the second breathing part is connected with a breathing pipe of the respirator.

Further, the supporting part is of a cambered surface structure.

Further, the second breathing part is arranged at the lower end of the first breathing part.

Furthermore, the second breathing part is made of silica gel materials.

Further, the sealing part is made of a silica gel material.

Further, the front end of sealing part is provided with the through-hole, first breathing portion cover is established in the through-hole.

Further, first breathing portion and through-hole interference fit.

Further, the length of the first breathing part is greater than the thickness of the sealing part.

Compared with the prior art, the invention can realize at least one of the following beneficial effects:

(1) the mask comprises the supporting part, wherein the supporting part is connected with the mounting groove of the upper cover and can seal the mounting groove of the upper cover, and the supporting part is used as a part of the upper cover, so that the packaging volume of the respirator is reduced, materials are saved, and waste is avoided.

(2) The breathing tube, the air bag and the oxygen generating tank are communicated through the three-way unit provided with the one-way valve, 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 tube, the traditional two-tube or three-tube structure for realizing the circulating oxygen generation is simplified, the use process is more convenient, and the influence on the action of 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;

(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, and the waste of oxygen generating agent in other spaces caused by the fact that the air only flows between the shortest connecting lines of the air inlet and outlet pipe openings is avoided; 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 tank is flat and hemispherical, and is matched with the flat and hemispherical upper cover, so that the respirator is in a round cake shape in a packaging state, and is more comfortable when being hung between the waist and the like or hung in front of the chest for use;

(5) the oxygen generating tank is provided with the observation window, the edge of the observation window is provided with the scale lines, and the residual protection time can be estimated in the using process through the scale lines on the edge of the observation window, so that a user can intuitively master the residual protection time of the respirator, and the use safety of the self-rescue respirator is ensured;

(6) according to the respirator, the initial oxygen generation device is arranged, compressed oxygen is stored in the initial oxygen generation device, the initial oxygen generation device is communicated with the air inlet of the air bag, the valve of the initial oxygen generation device is opened at the initial wearing stage of the respirator, the compressed oxygen in the initial oxygen generation device is filled into the air bag and is firstly used by a user, and the comfort level of the respirator during use is improved;

(7) the heat insulation sleeve is sleeved outside the oxygen generating tank, and the heat dissipation buffer holes are formed in the heat insulation sleeve, so that the heat dissipation function can be achieved, a certain buffer function can be achieved when the oxygen generating tank is impacted, the situation that the oxygen generating agent in the oxygen generating tank is damaged to generate dust which is not beneficial to fully reacting with air with low oxygen concentration and wastes the oxygen generating agent is avoided, and meanwhile, the dust easily enters a respiratory tract along with the air to injure a user;

(8) the invention adopts a vest type breathing air bag design, the air bag adopts a U-shaped design, the oxygen generating tank is embedded in the U-shaped space, so that the main body of the respirator is distributed in front of the chest, the folded structure is small and exquisite, the wearing and the use are more comfortable and convenient, and the vest is provided with the reflective material, so that rescue personnel can conveniently determine the position of a trapped person.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. 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.

FIG. 1 is a schematic structural view of a packaged state of a respirator of an embodiment;

FIG. 2 is a schematic view of the entire structure of the mask of the embodiment;

FIG. 3 is an exploded view of the mask according to the embodiment;

fig. 4 is an exploded view of the mask according to the embodiment;

fig. 5 is an exploded view (iii) of the overall structure of the mask of the embodiment;

FIG. 6 is an exploded view of a portion of the structure of the respirator of the embodiment;

FIG. 7 is a schematic view of an embodiment of a respirator with a respirator removed;

FIG. 8 is a schematic view of the structure of an oxygen generating portion of the respirator according to the embodiment;

FIG. 9 is a cross-sectional view of the construction of the oxygen generating device with the oxygen generating portion removed from the primary oxygen generating portion of the respirator according to the embodiment;

FIG. 10 is a sectional view showing the structure of the upper cover of the respirator of the embodiment in a state of being connected with an oxygen generating tank.

Reference numerals:

1-mask; 11-a support; 111-a first respiratory portion; 112-a second respiratory portion; 12-a seal; 121-a through hole; 122-a nose clip; 123-pulling rope; 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-quick release snap ring; 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; 5, covering the upper cover; 51- "h" shaped port; 52-a buffer sleeve; 521-a slot; 53-packaging the collar; 6-waistband.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

The invention discloses a mining respirator, as shown in fig. 1-10, which comprises a respirator 1, wherein the respirator 1 comprises a supporting part 11 and a sealing part 12, the supporting part 11 is connected with the sealing part 12, the supporting part 11 is arranged on the outer side of the sealing part 12, the supporting part 11 is used for supporting the sealing part 12, the sealing part 12 is used for fitting the face, and the supporting part 11 is a part of a respirator packaging shell.

Compared with the prior art, the supporting part 11 of the mask in the embodiment provides external support for the soft sealing part 12 when in use, and is used as a part of the packaging shell, so that the internal space of the respirator in a packaging state is reduced, namely the volume of the respirator is reduced, meanwhile, the volume of the packaging shell is reduced, excessive discarding is avoided, and resources are saved.

The supporting part 11 is an arc surface structure with a certain thickness, is made of hard materials, can be excessively matched with a packaging shell of the respirator, and seals a corresponding mounting part in the packaging shell. In this embodiment, the mounting groove phase-match that sets up on supporting part 11 and the upper cover 5, when the respirator was in storage and carrying state, supporting part 11 set up in the mounting groove of upper cover 5 to can seal the mounting groove, avoid external adverse circumstances to the damage of respirator internals.

The inner side of the supporting part 11 is provided with a first breathing part 111 and a second breathing part 112, the first breathing part 111 is communicated with the second breathing part 112, the first breathing part 111 is sleeved in the sealing part 12 and is butted with the mouth of a user for breathing, and the second breathing part 112 is connected with a breathing pipe of a respirator. In this embodiment, the first breathing part 111 is made of a hard material and has a cylindrical structure, and the second breathing part 112 is disposed at the lower end of the first breathing part 111, is made of a soft silica gel material, and is connected to the breathing tube 2.

Sealing portion 12 is the silica gel material preparation, and sealing portion 12's front end is provided with plane portion, is provided with through-hole 121 on the plane portion, and first breathing portion 111 cover is established in through-hole 121, and first breathing portion 111 is interference fit with through-hole 121, avoids taking off gauze mask 1 and the supporting part 11 and sealing portion 12 breaks away from in the use. In order to allow the mouth of the user to contact the first breathing part 111, the length of the first breathing part is greater than the thickness of the sealing part. The part of the sealing part 12 close to the nose is provided with a nose clip 122 for clipping the nose when the respirator is used, a user breathes by relying on the mouth, the side part of the sealing part 12 is provided with a pull rope 123, the pull rope is connected with a valve of the initial oxygen generating device 33, when the mask 1 is taken down from the respirator, the valve of the initial oxygen generating device 33 is opened by the pull rope 123, so that the compressed oxygen in the initial oxygen generating device 33 is filled into the air bag 4, the structure is simple, and the operation is convenient.

When the second breathing part 112 is connected to the breathing tube 2, the second breathing part 112 does not extend into the sealing part 12 when passing through the sealing part 12 near the chin of the user. The mask 1 further comprises an elastic band, one end of the elastic band is arranged between the supporting portion 11 and the sealing portion 12, and the other end of the elastic band is worn on the head of a user to firmly fix the mask 1. In order to facilitate the mask 1 to be taken out, the outer contour of the support portion 11 is larger than the outer contour of the seal portion 12.

The respirator also comprises 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 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.

In the embodiment, the breathing tube, the air bag and the oxygen generating tank are communicated by the three-way unit, and only one breathing tube is utilized to realize that gas exhaled by a human body enters the air bag through the oxygen generating tank and then directly enters the circulating oxygen generating system of the human body by bypassing the oxygen generating tank from the air bag, so that the traditional two-tube or three-tube structure for realizing circulating oxygen generating 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.

In this embodiment, the breathing tube 2 is a flexible hose to facilitate bending and twisting of the respirator 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 connecting lines of the air inlet and outlet pipes is avoided; 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 generation device 33 is opened to charge the internal compressed oxygen into the air bag 4 at the initial wearing stage of the respirator, so that the oxygen is firstly used by the user, and the comfort level of the respirator during 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, causes the waste of producing the oxygen agent, and the dust is simultaneously along with the air admission respiratory track easily, 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.

In this embodiment, when the respirator is in the packing state, gauze mask 1, breathing tube 2, gasbag 4 all place 3 tops on producing oxygen, are wrapped up by upper cover 5 and are cramped with producing oxygen jar 31, and upper cover 5 is flat hemisphere, and upper cover 5 and producing oxygen jar 31 make the product be the cake form under the storage state.

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 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 respirator, so that the appearance of the product in a packaging state is attractive. The upper cover 5 is also provided with an installation groove equipped with the support portion 11.

In order to facilitate the fixing of the upper cover 5, the oxygen generating tank 31 is further provided with quick-release retaining rings 313, the quick-release retaining rings 313 are arranged on two sides of the oxygen generating tank 31, and specifically, the quick-release retaining rings 313 are arranged in two and symmetrically arranged on the front and back of the oxygen generating tank 31. When upper cover 5 is connected with oxygen generating tank 31, the both ends of packing clamp 53 hang with quick detach buckle 313 and buckle, cramp upper cover 5, and packing clamp 53 sets up on gauze mask 1, has avoided breaking away from of gauze mask 1, and when needs use the respirator, open the connection position of quick detach buckle and packing clamp and can get into user state convenient and fast.

In order to facilitate the carrying of the respirator when the respirator is not used, the back of the respirator is provided with a waistband 6, the waistband 6 is connected with a quick-release buckle 313, the respirator is convenient to carry around when being carried around the waist, and the waistband is provided with a heat insulation pad to prevent heat generated by the respirator from scalding a user.

The respirator is under the storage state, and the mouth of pipe of first connecting portion 111 is equipped with the sealing plug, and the seal membrane has been pasted in the one-way relief valve outside of gasbag 4, and sealing plug and seal membrane all are connected to upper cover 5 through the rope, and the respirator opens the automatic upper cover that drops along with of back sealing plug and seal membrane, and the respirator gets into available state immediately.

The mining respirator is convenient to carry and use, comfortable in experience, and capable of visually determining whether the oxygen generating agent fails, and the respirator is used as a part of the respirator packaging shell, so that the size of the respirator is reduced, and waste is reduced.

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 are included in the scope of the present invention.

Claims

1. The mining respirator is characterized by comprising a 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), the oxygen generating tank (31) and the upper cover (5) are both flat hemispheres, the mask (1) comprises a supporting part (11) and a sealing part (12), the supporting part (11) is arranged on the outer side of the sealing part (12) and used for supporting the sealing part (12), and the sealing part (12) is used for fitting the face of a user; the supporting part (11) is a part of the respirator packaging shell, the supporting part (11) is of an arc surface structure with a certain thickness, the supporting part (11) is matched with an installation groove formed in the upper cover (5), and when the respirator is in a storage and carrying state, the supporting part (11) is arranged in the installation groove of the upper cover (5) and can seal the installation groove; when the respirator is in a packaging state, the mask (1), the breathing tube (2) and the air bag (4) are all placed above the oxygen generating part (3), and are wrapped by the upper cover (5) and are hooped with the oxygen generating tank (31) to enable the product to be in a round cake shape in a storage state;

a first breathing part (111) and a second breathing part (112) are arranged on the inner side of the supporting part (11), and the first breathing part (111) is communicated with the second breathing part (112);

the first breathing part (111) is sleeved in the sealing part (12) and is butted with the mouth of a user; the second breathing part (112) is connected with a breathing pipe of a respirator; the second breathing part (112) is arranged at the lower end of the first breathing part (111);

the front end of sealing portion (12) is provided with through-hole (121), first breathing portion (111) cover is established in through-hole (121), first breathing portion (111) and through-hole (121) interference fit.

2. The mining respirator of claim 1, wherein the second breathing portion (112) is made of a silicone material.

3. The mining respirator according to claim 1, characterized in that the sealing portion (12) is made of silicone material.

4. A mining respirator according to any of claims 1-3, characterized in that the length of the first breathing part (111) is greater than the thickness of the sealing part (12).