Air distribution breathing device and breathing air bag box

Abstract

The invention provides an air distribution breathing device and a breathing air bag box. The air distribution breathing device comprises a breathing mask, the breathing air bag box and an air inlet and outlet assembly. Wherein the breathing mask can accommodate the face and can be worn on the head. Gas can be introduced into the breathing mask and exhausted from the breathing mask. The gas includes at least oxygen and carbon dioxide, and the exhaust gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide. The air inlet and outlet assembly is connected to the breathing air bag box and the breathing mask, quantitative air generated by the breathing air bag box is input into the breathing mask through the air inlet and outlet assembly, and waste gas exhausted by the breathing mask is conveyed to the breathing air bag box. The breathing air bag box can be carried on the back, the breathing air bag box can adjust the air conveying amount in real time according to environment pressure to generate quantitative air and absorb waste gas generated in the breathing mask in time, and expiration and inspiration of the breathing mask and the breathing air bag box are matched to form a working mode meeting the expiration and inspiration rhythm of the human body.

Description

Technical Field

[0001] The present application relates to the technical field of oxygen preparation, and in particular to an air distribution breathing device and a breathing air bag box. Background Art

[0002] During deepwater operations or shield machine cutter change operations under pressure, operators need to wear air-distributing helmets to breathe mixed gas. Conventional respirators are usually metal helmets, which are relatively heavy. With the connected air supply pipelines, communications, etc., the whole set of equipment is very heavy. Carrying the whole set of equipment on the head will increase the burden on the operators. When working in deepwater pressure environments or changing cutters under pressure in the shield machine mud water compartment, it will affect their flexibility, work efficiency, and communication effects. At the same time, the helmet affects the operators' observation and judgment of the surrounding environment.

[0003] Therefore, how to improve the stability of the gas-distributed helmet while reducing the pressure of the gas-distributed helmet on the head to improve the comfort of wearing the gas-distributed helmet has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The present application provides a gas-distributed breathing device to solve the technical problem in the prior art of how to improve the stability of the gas-distributed helmet while reducing the pressure of the gas-distributed helmet on the head to improve the comfort of wearing the gas-distributed helmet. The present application also provides a breathing airbag box.

[0005] The present application provides an air distribution breathing device, comprising: a breathing mask, a breathing air bag box and an air intake and exhaust assembly;

[0006] The breathing mask can accommodate the face and can be worn on the head, and the breathing mask can take in and exhaust gas; the gas at least includes oxygen and carbon dioxide, and the content of the carbon dioxide is much smaller than the content of the oxygen; the exhaust gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide;

[0007] The air intake and exhaust assembly is connected to the breathing airbag box and the breathing mask, and the quantitative gas generated by the breathing airbag box is input into the breathing mask through the air intake and exhaust assembly, and the waste gas discharged from the breathing mask is transported to the breathing airbag box;

[0008] The breathing airbag box can be carried on the back, and the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate the quantitative gas, and absorb the waste gas generated in the breathing mask in time. The exhalation and inhalation of the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing rhythm of the human body.

[0009] Optionally, the breathing airbag box includes: a box body, an exhalation recovery device, an inhalation air distributor, a one-way connecting pipeline and a shoulder strap;

[0010] The exhaled air recovery device is arranged in the box body and is used to recover the waste gas discharged from the breathing mask;

[0011] The inhalation gas distributor is arranged in the box body and is located on the side of the exhalation recovery device, and the inhalation gas distributor is used to generate the quantitative gas;

[0012] In the working mode, at the first moment, the inhalation gas distributor delivers the generated quantitative gas to the breathing mask through the intake and exhaust assembly for human inhalation; at the second moment, the exhalation recovery device delivers the waste gas discharged from the breathing mask to the breathing airbag box through the intake and exhaust assembly for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body; the first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body, respectively;

[0013] The one-way connecting pipeline is connected to the exhaled air recovery device and the inhaled air distributor, and the one-way connecting pipeline can transport the waste gas recovered by the exhaled air recovery device to the inhaled air distributor;

[0014] The shoulder strap is arranged on the outside of the box body, and the box body can be carried by the shoulder strap.

[0015] Optionally, the exhalation recycler comprises: a recycle accommodating cavity, a first airbag assembly, a one-way exhalation interface, a first connecting support rod, a first exhalation ratio control port, and a second exhalation ratio control port;

[0016] The first airbag assembly is arranged inside the recovery accommodating cavity;

[0017] The one-way exhalation interface is provided between the first end of the recovery accommodating cavity and the first end of the first airbag assembly;

[0018] The first exhalation ratio control port is disposed at the second end of the first airbag assembly;

[0019] The second exhalation ratio control port is arranged at the second end of the recovery accommodating cavity;

[0020] The first connecting support rod is sequentially connected to the one-way exhalation interface, the first airbag assembly, the first exhalation ratio control port and the second exhalation ratio control port;

[0021] In the exhalation recovery mode, the one-way exhalation interface is opened, the first exhalation ratio control port is closed, and the first airbag assembly recovers the waste gas for expansion; in the exhalation exhaust mode, the one-way exhalation interface is closed, the first exhalation ratio control port is opened, and the first airbag assembly discharges the waste gas for compression.

[0022] Optionally, the air inhalation distributor comprises: an air distribution accommodating chamber, a second air bag assembly, a one-way air inhalation interface, a second connecting support rod and an air inhalation ratio control port;

[0023] The second airbag assembly is arranged inside the air distribution accommodating cavity;

[0024] The one-way air suction interface is provided between the first end of the air distribution accommodating cavity and the first end of the second airbag assembly;

[0025] The suction ratio control port is arranged at the second end of the second airbag assembly;

[0026] The second connecting support rod tube is sequentially connected to the one-way air suction interface, the second air bag assembly and the air suction ratio control port;

[0027] In the inhalation mode, the one-way inhalation interface is opened, the inhalation ratio control port is closed, and the exhaust gas of the second airbag assembly is compressed; in the gas distribution mode, the one-way exhalation interface is closed, the inhalation ratio control port is opened, and the second airbag assembly is gas-distributed and expanded.

[0028] Optionally, the first airbag assembly and the second airbag assembly respectively include: an airbag, a connecting rod and a sliding shaft;

[0029] The airbags are respectively arranged in the recovery accommodating cavity and the gas distribution accommodating cavity;

[0030] The sliding shaft is respectively mounted on the first connecting support rod and the second connecting support rod, and can slide on the first connecting support rod and the second connecting support rod respectively;

[0031] One end of the connecting rod is connected to the airbag, and the other end of the connecting rod is connected to the sliding shaft; when the airbag shrinks, the opening angle of the connecting rod relative to the first connecting support rod and the second connecting support rod is reduced; when the airbag expands, the opening angle of the connecting rod relative to the first connecting support rod and the second connecting support rod is increased.

[0032] Optionally, the breathing airbag box also includes a gas regulating device, which is arranged on the outside of the box body and is connected to the air intake distributor, and is used to adjust the gas supply pressure of the air intake distributor according to the on-site environment and regulate the gas generated by the air intake distributor to generate the quantitative gas.

[0033] Optionally, the gas regulating device comprises: a shell, a gas containing cavity, a gas supply pipeline, a pressure reducing valve, a flow control valve and a control button;

[0034] The gas containing cavity is arranged in the shell; the gas containing cavity is used to contain gas;

[0035] The air supply pipeline is connected to the air containing cavity and the air inhalation distributor;

[0036] The pressure reducing valve is placed inside the housing, connected to the gas supply pipeline and connected to the control button, and the pressure reducing valve is controlled by operating the control button to adjust the gas provided by the gas containing cavity to the required pressure of the air inhalation distributor under the current environment;

[0037] The flow control valve is connected to the one-way inhalation interface and is used to adjust the gas of the required pressure that has been adjusted to the quantitative gas required by the breathing mask.

[0038] Optionally, the breathing airbag box further includes a carbon dioxide adsorber; the carbon dioxide adsorber is disposed on the one-way connecting pipeline, and the carbon dioxide adsorber is used to adsorb the carbon dioxide retained in the recovery accommodating cavity.

[0039] Optionally, the breathing mask comprises: a silicone oral and nasal mask body, an elastic strap, a three-way valve and a one-way control diaphragm;

[0040] The silicone oral and nasal mask body is used to accommodate the face;

[0041] The elastic band is connected to the silicone oral and nasal mask body, and the silicone oral and nasal mask body can be worn on the head through the elastic band;

[0042] The three-way valve is arranged at the bottom of the silicone oral and nasal mask body; the breathing mask is connected to the air inlet and outlet assembly through the three-way valve;

[0043] The one-way control diaphragm is arranged in each valve port of the three-way valve, and is used to control the gas passing through each valve port to flow in a single line.

[0044] Optionally, the air intake and exhaust assembly includes: a first connecting hose and a second connecting hose;

[0045] The first end of the first connecting hose is connected to the air inlet port of the three-way valve, and the second end of the first connecting hose is connected to the one-way air inlet port;

[0046] The first end of the second connecting hose is connected to the exhaust valve port of the three-way valve, and the second end of the second connecting hose is connected to the one-way exhalation interface.

[0047] The present application also provides a breathing air bag box, comprising: a box body, an exhalation recovery device, an inhalation air distributor, a one-way connecting pipeline and a shoulder strap;

[0048] The exhaled air recovery device is arranged in the box body and can be connected to an external breathing mask to recover the waste gas discharged from the breathing mask; the waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide;

[0049] The inhalation gas distributor is arranged in the box body and is located on the side of the exhalation recovery device, and can be connected to an external breathing mask. The inhalation gas distributor is used to adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, and deliver the gas to the breathing mask; the gas includes at least oxygen and carbon dioxide, and the content of the carbon dioxide is much smaller than the content of the oxygen;

[0050] In the working mode, at the first moment, the inhalation gas distributor delivers the generated quantitative gas to the breathing mask through the intake and exhaust assembly for human inhalation; at the second moment, the exhalation recovery device delivers the waste gas discharged from the breathing mask to the breathing airbag box through the intake and exhaust assembly for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body; the first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body, respectively;

[0051] The one-way connecting pipeline is connected to the exhaled air recovery device and the inhaled air distributor, and the one-way connecting pipeline can transport the waste gas recovered by the exhaled air recovery device to the inhaled air distributor;

[0052] The shoulder strap is arranged on the outside of the box body, and the box body can be carried by the shoulder strap.

[0053] Compared with the prior art, this application has the following advantages:

[0054] The present application provides a gas distribution breathing device, including: a breathing mask, a breathing airbag box and an air intake and exhaust assembly. Among them, the breathing mask can accommodate the face and can be worn on the head. The breathing mask can pass gas and exhaust gas. The gas includes at least oxygen and carbon dioxide, wherein the content of carbon dioxide is much less than the content of oxygen. For example, in one example, the content of carbon dioxide is 0.04%, and the content of oxygen is 21% to 45%. The waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide. The air intake and exhaust assembly is connected to the breathing airbag box and the breathing mask, and the quantitative gas generated by the breathing airbag box is input into the breathing mask through the air intake and exhaust assembly, and the waste gas discharged from the breathing mask is transported to the breathing airbag box. The breathing airbag box can be carried on the back, and the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate a quantitative gas, and absorb the waste gas generated in the breathing mask in time, and the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing rhythm of the human body.

[0055] It can be understood that the present application sets the breathing mask and the breathing airbag box separately, so that the weight of the breathing mask worn on the face is reduced, so that during deep-water operations or shield machine pressure tool change operations, the breathing mask can meet the breathing of mixed gases while increasing the comfort of facial wearing, thereby improving work efficiency. In addition, the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, that is, the breathing airbag box can automatically control the gas volume according to the ambient pressure to meet the breathing and exhaust needs of the workers under high pressure. Moreover, the breathing airbag box absorbs the waste gas generated in the breathing mask in time to avoid affecting the breathing oxygen, and realizes the effective use of the gas. The breathing and inhalation of the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing and inhalation rhythm of the human body, and meets the breathing and exhaust needs of workers in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a structural schematic diagram of an air distribution breathing device provided in the first embodiment of the present application.

[0057] Figure 2 It is a schematic structural diagram of the breathing airbag box provided in the first embodiment of the present application.

[0058] Figure 3 It is a schematic structural diagram of the first airbag assembly or the second airbag assembly provided in the first embodiment of the present application.

[0059] Figure 4 It is a structural schematic diagram of the one-way exhalation interface provided in the first embodiment of the present application.

[0060] Figure 5 It is a structural schematic diagram of the first exhalation ratio control port provided in the first embodiment of the present application.

[0061] Figure 6 It is a structural schematic diagram of the one-way air intake interface provided in the first embodiment of the present application.

[0062] Figure 7 It is a structural schematic diagram of the suction ratio control port provided in the first embodiment of the present application.

[0063] Reference numerals:

[0064] Breathing mask 1, silicone mouth and nose mask body 11, elastic lace 12, three-way valve 13, breathing airbag box 2, box body 21, exhalation recycler 3, recovery accommodating cavity 31, first airbag assembly 32, one-way exhalation interface 33, first main body 331, one-way exhalation channel 332, one-way exhalation control diaphragm 333, first connecting support rod 34, first exhalation ratio control port 35, second main body 351, first exhalation channel 352, first exhalation ratio control diaphragm 353, second exhalation ratio control port 36, inhalation air distributor 4, air distribution accommodating cavity 41, second airbag assembly 42, one-way air intake interface 43, fourth main body 431, one-way air intake channel 432, one-way air intake control diaphragm 433, second connecting support rod 44, air intake ratio control port 45, fifth main body 451, air intake channel 452, air intake ratio control diaphragm 453, one-way connecting pipeline 22, air bag 51, first local point 511, second local point 512, first connecting rod 52, second connecting rod 53, first sliding shaft 54, gas regulating device 6, pressure detection device 61, carbon dioxide adsorber 7, air intake and exhaust assembly 8, first connecting hose 81, second connecting hose 82. DETAILED DESCRIPTION

[0065] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0066] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] First embodiment

[0069] In the related technology, when performing deep-water operations or pressure-changing cutters in shield machines, operators need to wear air-distributing helmets to breathe mixed gas to perform operations. Conventional respirators are usually metal helmets, which are relatively heavy. With the connected air supply pipelines, communications, etc., the whole set of equipment is very heavy. Carrying the whole set of equipment on the head will increase the burden on the operators. When working in deep-water pressure environments or performing pressure-changing cutters in the mud water compartment of shield machines, it will affect their flexibility, work efficiency, and communication effects. At the same time, the helmet affects the operators' observation and judgment of the surrounding environment.

[0070] Based on this, the present application provides a gas-distributed breathing device, including: a breathing mask, a breathing airbag box and an air intake and exhaust assembly. Among them, the breathing mask can accommodate the face and can be worn on the head. The breathing mask can pass gas and exhaust gas. The gas includes at least oxygen and carbon dioxide, wherein the content of carbon dioxide is much less than the content of oxygen. For example, in one example, the content of carbon dioxide is 0.04%, and the content of oxygen is 21% to 45%. The waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide. The air intake and exhaust assembly is connected to the breathing airbag box and the breathing mask, and the quantitative gas generated by the breathing airbag box is input into the breathing mask through the air intake and exhaust assembly, and the waste gas discharged from the breathing mask is transported to the breathing airbag box. The breathing airbag box can be carried on the back, and the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate a quantitative gas, and absorb the waste gas generated in the breathing mask in time, and the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing rhythm of the human body.

[0071] It can be understood that the present application sets the breathing mask and the breathing airbag box separately, so that the weight of the breathing mask worn on the face is reduced, so that during deep-water operations or shield machine pressure tool change operations, the breathing mask can meet the breathing of mixed gases while increasing the comfort of facial wearing, thereby improving work efficiency. In addition, the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, that is, the breathing airbag box can automatically control the gas volume according to the ambient pressure to meet the breathing and exhaust needs of the workers under high pressure. Moreover, the breathing airbag box absorbs the waste gas generated in the breathing mask in time to avoid affecting the breathing oxygen, and realizes the effective use of the gas. The breathing and inhalation of the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing and inhalation rhythm of the human body, and meets the breathing and exhaust needs of workers in various environments.

[0072] Next, the air distribution breathing device provided by the present application will be described in detail with reference to the accompanying drawings. Figure 1 It is a structural schematic diagram of an air distribution breathing device provided in an embodiment of the present application. Figure 2 It is a schematic diagram of the structure of the breathing airbag box provided in an embodiment of the present application. Figure 3 It is a schematic diagram of the structure of the first airbag assembly or the second airbag assembly provided in an embodiment of the present application. Figure 4 It is a structural schematic diagram of the one-way exhalation interface provided in the first embodiment of the present application. Figure 5 It is a structural schematic diagram of the first exhalation ratio control port provided in the first embodiment of the present application. Figure 6 It is a structural schematic diagram of the one-way air intake interface provided in the first embodiment of the present application. Figure 7 It is a structural schematic diagram of the suction ratio control port provided in the first embodiment of the present application.

[0073] like Figures 1 to 7 As shown, the present application provides a gas-distributed breathing device, comprising: a breathing mask 1, a breathing airbag box 2 and an air intake and exhaust assembly 8. The breathing mask 1 can accommodate the face and can be worn on the head. The breathing mask 1 can take in gas and exhaust gas. The gas includes at least oxygen and carbon dioxide, wherein the content of carbon dioxide is much smaller than the content of oxygen. For example, in one example, the content of carbon dioxide is 0.04%, and the content of oxygen is 21% to 45%. The exhaust gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide. The air intake and exhaust assembly 8 is connected to the breathing airbag box 2 and the breathing mask 1, and a fixed amount of gas generated by the breathing airbag box 2 is input into the breathing mask 1 through the air intake and exhaust assembly 8, and the exhaust gas discharged from the breathing mask 1 is transported to the breathing airbag box 2. The breathing airbag box 2 can be carried on the back, and the breathing airbag box 2 can adjust the gas delivery volume in real time according to the environmental pressure to generate a fixed amount of gas, and absorb the waste gas generated in the breathing mask 1 in time. The exhalation and inhalation of the breathing mask 1 and the breathing airbag box 2 cooperate to form a working mode that meets the breathing rhythm of the human body.

[0074] Specifically, in the present embodiment, the breathing airbag box 2 includes: a box body 21, an exhalation recovery device 3, an inhalation air distributor 4, a one-way connecting pipe 22 and a shoulder strap. Among them, the exhalation recovery device 3 is arranged in the box body 21, and is used to recover the waste gas discharged from the breathing mask 1. The inhalation air distributor 4 is arranged in the box body 21, and is located on the side of the exhalation recovery device 3, and the inhalation air distributor 4 is used to generate a quantitative gas. In the working mode, at the first moment, the inhalation air distributor 4 delivers the generated quantitative gas to the breathing mask 1 through the intake and exhaust assembly 8 for human inhalation. At the second moment, the exhalation recovery device 3 delivers the waste gas discharged from the breathing mask 1 to the breathing airbag box 2 through the intake and exhaust assembly 8 for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body. Among them, the first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body, respectively. The one-way connecting pipe 22 is connected to the exhalation recovery device 3 and the inhalation air distributor 4. The one-way connecting pipe 22 can transport the waste gas recovered by the exhalation recovery device 3 to the inhalation air distributor 4. The shoulder strap is arranged outside the box 21, and the box 21 can be carried by the shoulder strap.

[0075] Furthermore, in the present embodiment, the exhalation recycler 3 comprises: a recovery accommodating cavity 31, a first airbag assembly 32, a one-way exhalation interface 33, a first connecting support rod 34, a first exhalation ratio control port 35 and a second exhalation ratio control port 36. Among them, the first airbag assembly 32 is arranged inside the recovery accommodating cavity 31. The one-way exhalation interface 33 is arranged between the first end of the recovery accommodating cavity 31 and the first end of the first airbag assembly 32, and the one-way exhalation interface 33 can only allow the exhaust gas discharged from the breathing mask 1 to be transported from the air intake and exhaust assembly 8 to the first airbag assembly 32, and the exhaust gas cannot be transported in the reverse direction. In one example, the one-way exhalation interface 33 includes: a first main body 331, a one-way exhalation channel 332 and a one-way exhalation control diaphragm 333, wherein the first main body 331 is arranged between the first end of the recovery accommodating cavity 31 and the first end of the first airbag assembly 32, the one-way exhalation channel 332 is arranged in the first main body 331, the one-way exhalation channel 332 is used for gas circulation, and the one-way exhalation control diaphragm 333 is arranged in the one-way exhalation channel 332 for controlling the one-way flow direction of the gas in the one-way exhalation channel 332.

[0076] The first exhalation ratio control port 35 is disposed at the second end of the first airbag assembly 32. In one example, the first exhalation ratio control port 35 includes: a second body 351, a first exhalation channel 352352 and a first exhalation ratio control diaphragm 353, wherein the second body 351 is disposed at the second end of the first airbag assembly 32, the first exhalation channel 352 is disposed in the second body 351, the first exhalation channel 352 is used for gas circulation, and the first exhalation ratio control diaphragm 353 is disposed in the first exhalation channel 352 to control the flow direction of gas in the first exhalation channel 352.

[0077] The second exhalation ratio control port 36 is disposed at the second end of the recycling accommodating cavity 31. The recycling accommodating cavity 31 can discharge the waste gas in the recycling accommodating cavity 31 to the outside of the cavity through the second exhalation ratio control port 36. In one example, the second exhalation ratio control port 36 includes: a third body, a second exhalation channel, and a second exhalation ratio control diaphragm, wherein the third body is disposed at the second end of the second airbag assembly 42, the second breathing channel is disposed in the third body, the second breathing channel is used for gas circulation, and the second exhalation ratio control diaphragm is disposed in the second breathing channel to control the flow direction of the gas in the second breathing channel.

[0078] In one example, taking the vertical placement of the first airbag assembly 32 as an example, the first end of the recovery accommodating cavity 31 and the first end of the first airbag assembly 32 are respectively above their respective main bodies, and correspondingly, the second end of the recovery accommodating cavity 31 and the second end of the first airbag assembly 32 are respectively below their respective main bodies. The first connecting support rod 34 is sequentially connected to the one-way exhalation interface 33, the first airbag assembly 32, the first exhalation ratio control port 35 and the second exhalation ratio control port 36. The first connecting support rod 34 supports the one-way exhalation interface 33, the first airbag assembly 32, the first exhalation ratio control port 35 and the second exhalation ratio control port 36 respectively.

[0079] In the exhalation recovery mode, the one-way exhalation interface 33 is opened, the first exhalation ratio control port 35 is closed, and the first airbag assembly 32 recovers the waste gas for expansion. In the exhalation exhaust mode, the one-way exhalation interface 33 is closed, the first exhalation ratio control port 35 is opened, and the first airbag assembly 32 discharges the waste gas for compression.

[0080] Furthermore, in this embodiment, the first airbag assembly 32 includes: an airbag, a connecting rod and a sliding shaft. The airbag is arranged in the recovery accommodating cavity 31. The sliding shafts are respectively mounted on the first connecting support rods 34 and can slide on the first connecting support rods 34. One end of the connecting rod is connected to the airbag, and the other end of the connecting rod is connected to the sliding shaft. When the airbag is contracted, the opening angle of the connecting rod relative to the first connecting support rod 34 decreases. When the airbag is expanded, the opening angle of the connecting rod relative to the first connecting support rod 34 increases.

[0081] In one example, two connecting rods are provided, including a first connecting rod 52 and a second connecting rod 53. Among them, the first connecting rod 52 and the second connecting rod 53 are symmetrically arranged relative to the first connecting support rod 34. One sliding shaft is provided, that is, the first sliding shaft 54. Specifically, one end of the first connecting rod 52 is connected to the first partial point 511 of the airbag, and the other end of the first connecting rod 52 is connected to the sliding shaft. One end of the second connecting rod 53 is connected to the second partial point 512 of the airbag, and the other end of the second connecting rod 53 is connected to the sliding shaft. The first partial point 511 and the second partial point 512 of the airbag are symmetric relative to the first connecting support rod 34. When the airbag contracts, one end of the first connecting rod 52 connected to the first partial point 511 of the airbag and one end of the second connecting rod 53 connected to the second partial point 512 of the airbag remain stationary, and the other ends of the first connecting rod 52 and the second connecting rod 53 connected to the sliding shaft move downward along the first connecting support rod 34 driven by the sliding shaft, and the opening angles of the first connecting rod 52 and the second connecting rod 53 relative to the first connecting support rod 34 gradually decrease, prompting the airbag to contract. Conversely, when the airbag expands, the other ends of the first connecting rod 52 and the second connecting rod 53 connected to the sliding shaft move upward along the first connecting support rod 34 driven by the sliding shaft, and the opening angles of the first connecting rod 52 and the second connecting rod 53 relative to the first connecting support rod 34 gradually increase, prompting the airbag to expand.

[0082] In this embodiment, the air intake valve 4 includes: an air distribution accommodating cavity 41, a second airbag assembly 42, a one-way air intake interface 43, a second connecting support rod 44, and an air intake ratio control port 45. Among them, the second airbag assembly 42 is arranged inside the air distribution accommodating cavity 41. The one-way air intake interface 43 is arranged between the first end of the air distribution accommodating cavity 41 and the first end of the second airbag assembly 42. In one example, the one-way air intake interface 43 includes: a fourth main body 431, a one-way air intake channel 452432, and a one-way air intake control diaphragm 433. Among them, the fourth main body 431 is arranged between the first end of the air distribution accommodating cavity 41 and the first end of the second airbag assembly 42, the one-way air intake channel 452432 is arranged in the fourth main body 431, the one-way air intake channel 452432 is used for gas flow, and the one-way air intake control diaphragm 433 is arranged in the one-way air intake channel 452432 to control the one-way flow of gas in the one-way air intake channel 452432.

[0083] The air intake ratio control port 45 is arranged at the second end of the second airbag assembly 42. The air intake ratio control port 45 includes: a fifth main body 451, an air intake channel 452, and an air intake ratio control diaphragm 453. Among them, the fifth main body 451 is arranged at the second end of the second airbag assembly 42, the air intake channel 452 is arranged in the fifth main body 451, the air intake channel 452 is used for gas flow, and the air intake ratio control diaphragm 453 is arranged in the air intake channel 452 to control the flow of gas in the air intake channel 452.

[0084] In one example, taking the second airbag assembly 42 as an example of being placed vertically, the first end of the air distribution accommodating cavity 41 and the first end of the second airbag assembly 42 are respectively above their respective bodies, and correspondingly, the second end of the air distribution accommodating cavity 41 and the second end of the second airbag assembly 42 are respectively below their respective bodies. The second connecting support rod 44 is sequentially connected to the one-way air suction interface 43, the second airbag assembly 42 and the air suction ratio control port 45, and the second connecting support rod 44 supports the one-way air suction interface 43, the second airbag assembly 42 and the air suction ratio control port 45.

[0085] In the inhalation mode, the one-way inhalation interface 43 is opened, the inhalation ratio control port 45 is closed, and the second airbag assembly 42 discharges compressed gas. In the distribution mode, the one-way exhalation interface 33 is closed, the inhalation ratio control port 45 is opened, and the second airbag assembly 42 is distributed and expanded.

[0086] Furthermore, in the present embodiment, the second airbag assembly 42 includes: an airbag, a connecting rod and a sliding shaft. The airbag is arranged in the air distribution accommodating cavity 41. The sliding shafts are respectively mounted on the second connecting support rods 44 and can slide on the second connecting support rods 44. One end of the connecting rod is connected to the airbag, and the other end of the connecting rod is connected to the sliding shaft. When the airbag contracts, the opening angle of the connecting rod relative to the second connecting support rod 44 decreases. When the airbag expands, the opening angle of the connecting rod relative to the second connecting support rod 44 increases. The second airbag assembly 42 has the same structure as the first airbag assembly 32.

[0087] In one example, two connecting rods are provided, including a first connecting rod 52 and a second connecting rod 53. The first connecting rod 52 and the second connecting rod 53 are symmetrically arranged relative to the second connecting support rod 44. One sliding shaft is provided, namely, the first sliding shaft 54. Specifically, one end of the first connecting rod 52 is connected to the first local point 511 of the airbag, and the other end of the first connecting rod 52 is connected to the sliding shaft. One end of the second connecting rod 53 is connected to the second local point 512 of the airbag, and the other end of the second connecting rod 53 is connected to the sliding shaft. The first local point 511 and the second local point 512 of the airbag are symmetrical relative to the second connecting support rod 44. When the airbag is deflated, one end of the first connecting rod 52 connected to the first local point 511 of the airbag and one end of the second connecting rod 53 connected to the second local point 512 of the airbag are fixed, and the other ends of the first connecting rod 52 and the second connecting rod 53 connected to the sliding shaft move down along the second connecting support rod 44 driven by the sliding shaft, and the opening angles of the first connecting rod 52 and the second connecting rod 53 relative to the second connecting support rod 44 gradually decrease, which promotes the deflation of the airbag. Conversely, when the airbag is expanded, the other ends of the first connecting rod 52 and the second connecting rod 53 connected to the sliding shaft move up along the second connecting support rod 44 driven by the sliding shaft, and the opening angles of the first connecting rod 52 and the second connecting rod 53 relative to the second connecting support rod 44 gradually increase, which promotes the expansion of the airbag.

[0088] In this embodiment, in order to reasonably control the quantitative gas generated by the air intake distributor 4, the breathing airbag box 2 also includes a gas regulating device 6, which is arranged on the outside of the box body 21, and the gas regulating device 6 is connected to the air intake distributor 4, and is used to adjust the gas supply pressure of the air intake distributor 4 according to the on-site environment and regulate the gas generated by the air intake distributor 4 to generate a quantitative gas.

[0089] Specifically, in one example, the gas regulating device 6 includes: a shell, an air-containing cavity, an air supply pipeline, a pressure reducing valve, a flow control valve and a control button. Among them, the air-containing cavity is arranged in the shell, and the air-containing cavity is used to contain gas. The air supply pipeline is connected to the air-containing cavity and the air inhalation distributor 4. The pressure reducing valve is placed inside the shell, the pressure reducing valve is connected to the air supply pipeline, and is connected to the control button. The pressure reducing valve is controlled by operating the control button to adjust the gas provided by the air-containing cavity to the required pressure of the air inhalation distributor 4 under the current environment. Thereby, the gas provided by the air inhalation distributor 4 can be adjusted to meet the requirements of different environmental pressures. The flow control valve is connected to the one-way air inhalation interface 43, and is used to adjust the gas of the required pressure adjusted to the quantitative gas required by the breathing mask 1. That is, the flow control valve is used to adjust the gas of the required pressure adjusted to the flow required by the breathing mask 1.

[0090] In one example, in order to accurately know the pressure in the air distribution device 4, a pressure detection device 61 is further provided, and the pressure detection device 61 is arranged at the connection between the air supply pipeline and the air distribution chamber 41. The pressure detection device 61 is used to detect the pressure in the air distribution chamber 41.

[0091] In this embodiment, considering that the exhaust gas discharged from the breathing mask 1 contains carbon dioxide, the amount of carbon dioxide will increase during long-term use. If the exhaust gas is directly introduced into the inhalation distributor 4, it will affect the quality of the gas output by the inhalation distributor 4. Therefore, the breathing airbag box 2 also includes a carbon dioxide adsorber 7; the carbon dioxide adsorber 7 is arranged on the one-way connecting pipe 22, and the carbon dioxide adsorber 7 is used to absorb and recover the carbon dioxide retained in the accommodating cavity 31.

[0092] In this embodiment, the respiratory mask 1 includes: a silicone oral and nasal mask body 11, an elastic strap 12, a three-way valve 13 and a one-way control diaphragm. Among them, the silicone oral and nasal mask body 11 is configured to be compatible with the human face, and the silicone oral and nasal mask body 11 is used to accommodate the face. The elastic strap 12 is connected to the silicone oral and nasal mask body 11, and the silicone oral and nasal mask body 11 can be worn on the head through the elastic strap 12. The three-way valve 13 is arranged at the bottom of the silicone oral and nasal mask body 11, and the respiratory mask 1 is connected to the air intake and exhaust assembly 8 through the three-way valve 13. The one-way control diaphragm is arranged in each valve port of the three-way valve 13, and the one-way control diaphragm in each valve port is used to control the gas passing through each valve port to flow in a single line.

[0093] The air intake and exhaust assembly 8 is connected to the breathing airbag box 2 and the breathing mask 1, and the quantitative gas generated by the breathing airbag box 2 is input into the breathing mask 1 through the air intake and exhaust assembly 8, and the waste gas discharged from the breathing mask 1 is transported to the breathing airbag box 2. Specifically, in the present embodiment, the air intake and exhaust assembly 8 is connected to each valve port of the three-way valve 13 of the breathing airbag box 2 and the breathing mask 1. Among them, the air intake and exhaust assembly 8 includes: a first connecting hose 81 and a second connecting hose 82. The first end of the first connecting hose 81 is connected to the air intake valve port of the three-way valve 13, and the second end of the first connecting hose 81 is connected to the one-way inhalation interface 43. The first end of the second connecting hose 82 is connected to the exhaust valve port of the three-way valve 13, and the second end of the second connecting hose 82 is connected to the one-way exhalation interface 33.

[0094] The quantitative gas generated in the inhalation distributor 4 is introduced into the breathing mask 1 through the one-way inhalation interface 43, the first connecting hose 81 and the inlet valve port of the three-way valve 13. The waste gas in the breathing mask 1 is delivered to the exhalation recovery device 3 through the exhaust valve port of the three-way valve 13, the second connecting hose 82 and the one-way exhalation interface 33.

[0095] The present application provides a gas distribution breathing device, comprising: a breathing mask 1, a breathing airbag box 2 and an air intake and exhaust assembly 8. Among them, the breathing mask 1 can accommodate the face and can be worn on the head. The breathing mask 1 can pass gas and exhaust gas. The gas includes at least oxygen and carbon dioxide, wherein the content of carbon dioxide is much smaller than the content of oxygen. For example, in one example, the content of carbon dioxide is 0.04% and the content of oxygen is 21% to 45%. The waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide. The air intake and exhaust assembly 8 is connected to the breathing airbag box 2 and the breathing mask 1, and the quantitative gas generated by the breathing airbag box 2 is input into the breathing mask 1 through the air intake and exhaust assembly 8, and the waste gas discharged from the breathing mask 1 is transported to the breathing airbag box 2. The breathing airbag box 2 can be carried on the back, and the breathing airbag box 2 can adjust the gas delivery volume in real time according to the ambient pressure to generate a quantitative gas, and absorb the waste gas generated in the breathing mask 1 in time, and the breathing mask 1 and the breathing airbag box 2 cooperate to form a working mode that meets the breathing rhythm of the human body.

[0096] It can be understood that the present application sets the breathing mask 1 and the breathing airbag box 2 separately, so that the weight of the breathing mask 1 worn on the face is reduced, so that during deep-water operations or shield machine pressure tool change operations, the breathing mask 1 can meet the breathing of mixed gases while increasing the comfort of facial wearing, thereby improving work efficiency. In addition, the breathing airbag box 2 can adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, that is, the breathing airbag box 2 can automatically control the gas volume according to the ambient pressure to meet the breathing and exhaust needs of the operators under high pressure. Moreover, the breathing airbag box 2 absorbs the waste gas generated in the breathing mask 1 in time to avoid affecting the breathing oxygen, and realizes the effective use of the gas. The breathing and inhalation of the breathing mask 1 and the breathing airbag box 2 cooperate to form a working mode that meets the breathing and inhalation rhythm of the human body, and meets the breathing and exhaust needs of the operators in various environments.

[0097] Second embodiment

[0098] The present application also provides a breathing airbag box, including: a box body, an exhalation recovery device, an inhalation gas distributor, a one-way connecting pipeline and a shoulder strap. Among them, the exhalation recovery device is arranged in the box body, which can be connected to an external breathing mask to recover the waste gas discharged from the breathing mask; the waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide; the inhalation gas distributor is arranged in the box body and is located on the side of the exhalation recovery device, which can be connected to the breathing mask, and the inhalation gas distributor is used to adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, and deliver the gas to the breathing mask. The gas includes at least oxygen and carbon dioxide, and the content of carbon dioxide is much smaller than the content of oxygen. In the working mode, at the first moment, the inhalation gas distributor delivers the generated fixed amount of gas to the breathing mask for human body to inhale; at the second moment, the exhalation recovery device delivers the waste gas discharged from the breathing mask to the breathing airbag box for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body. The first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body, respectively. The one-way connecting pipeline is connected to the exhalation recovery device and the inhalation air distributor, and the one-way connecting pipeline can transport the waste gas recovered by the exhalation recovery device to the inhalation air distributor. The shoulder strap is arranged outside the box body, and the box body can be carried by the shoulder strap.

[0099] In this embodiment, the specific structure and description of the breathing airbag box can refer to the description of the breathing airbag box in the first embodiment above, and will not be repeated here.

[0100] It can be understood that the breathing airbag box of the present application can adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, that is, the breathing airbag box can automatically control the gas volume according to the ambient pressure to meet the breathing and exhaust needs of the workers under high pressure. Moreover, the breathing airbag box absorbs the waste gas generated in the breathing mask in time to avoid affecting the breathing oxygen, and realizes the effective use of gas. The breathing and inhalation of the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing and inhalation rhythm of the human body, meeting the breathing and exhaust needs of the workers in various environments.

[0101] It should be noted that, although several structures, components or units for realizing related functions are mentioned in the above detailed description, such division is not mandatory. In fact, according to the specific implementation of the present application, the features and functions of two or more structures, components or units described above can be concretized in one structure, component or unit. Conversely, the features and functions of one structure, component or unit described above can be further divided into multiple components, structures or units to be concretized.

[0102] In addition, although the components and the installation methods of the components or devices in the present application are described in a specific order in the drawings, this does not require or imply that the components or devices must be designed according to the specific components or the installation methods of the components, or that all the components shown must be included to achieve the desired results. Additionally or alternatively, some components can be omitted, multiple components can be combined into one component to achieve corresponding functions, and / or one component can be decomposed into multiple components to achieve corresponding functions, etc.

[0103] Although the present application is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

Claims

1. A gas distribution breathing device, characterized in that: include: Breathing masks, breathing bag boxes and air intake and exhaust assemblies; The breathing mask can accommodate the face and can be worn on the head, and the breathing mask can take in and exhaust gas; the gas at least includes oxygen and carbon dioxide, and the content of the carbon dioxide is much smaller than the content of the oxygen; the exhaust gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide; The air intake and exhaust assembly is connected to the breathing airbag box and the breathing mask, and the quantitative gas generated by the breathing airbag box is input into the breathing mask through the air intake and exhaust assembly, and the waste gas discharged from the breathing mask is transported to the breathing airbag box; The breathing airbag box can be carried on the back, and the breathing airbag box can adjust the gas delivery volume in real time according to the ambient pressure to generate the quantitative gas, and absorb the waste gas generated in the breathing mask in time. The exhalation and inhalation of the breathing mask and the breathing airbag box cooperate to form a working mode that meets the breathing rhythm of the human body.

2. The air-distributed breathing apparatus according to claim 1, characterized in that: The breathing airbag box comprises: a box body, an exhalation recovery device, an inhalation air distributor, a one-way connecting pipeline and a shoulder strap; The exhaled air recovery device is arranged in the box body and is used to recover the waste gas discharged from the breathing mask; The inhalation gas distributor is arranged in the box body and is located on the side of the exhalation recovery device, and the inhalation gas distributor is used to generate the quantitative gas; In the working mode, at the first moment, the inhalation gas distributor delivers the generated quantitative gas to the breathing mask through the intake and exhaust assembly for human inhalation; at the second moment, the exhalation recovery device delivers the waste gas discharged from the breathing mask to the breathing airbag box through the intake and exhaust assembly for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body; the first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body, respectively; The one-way connecting pipeline is connected to the exhaled air recovery device and the inhaled air distributor, and the one-way connecting pipeline can transport the waste gas recovered by the exhaled air recovery device to the inhaled air distributor; The shoulder strap is arranged on the outside of the box body, and the box body can be carried by the shoulder strap.

3. The air-distributed breathing apparatus according to claim 2, characterized in that: The exhalation recycler comprises: a recycle accommodating cavity, a first airbag assembly, a one-way exhalation interface, a first connecting support rod, a first exhalation ratio control port and a second exhalation ratio control port; The first airbag assembly is arranged inside the recovery accommodating cavity; The one-way exhalation interface is provided between the first end of the recovery accommodating cavity and the first end of the first airbag assembly; The first exhalation ratio control port is disposed at the second end of the first airbag assembly; The second exhalation ratio control port is arranged at the second end of the recovery accommodating cavity; The first connecting support rod is sequentially connected to the one-way exhalation interface, the first airbag assembly, the first exhalation ratio control port and the second exhalation ratio control port; In the exhalation recovery mode, the one-way exhalation interface is opened, the first exhalation ratio control port is closed, and the first airbag assembly recovers the waste gas for expansion; in the exhalation exhaust mode, the one-way exhalation interface is closed, the first exhalation ratio control port is opened, and the first airbag assembly discharges the waste gas for compression.

4. The air-distributed breathing apparatus according to claim 3, characterized in that: The air inhalation distributor comprises: an air distribution accommodating cavity, a second air bag assembly, a one-way air inhalation interface, a second connecting support rod and an air inhalation ratio control port; The second airbag assembly is arranged inside the air distribution accommodating cavity; The one-way air suction interface is provided between the first end of the air distribution accommodating cavity and the first end of the second airbag assembly; The suction ratio control port is arranged at the second end of the second airbag assembly; The second connecting support rod tube is sequentially connected to the one-way air suction interface, the second air bag assembly and the air suction ratio control port; In the inhalation mode, the one-way inhalation interface is opened, the inhalation ratio control port is closed, and the exhaust gas of the second airbag assembly is compressed; in the gas distribution mode, the one-way exhalation interface is closed, the inhalation ratio control port is opened, and the second airbag assembly is gas-distributed and expanded.

5. The air-distributed breathing apparatus according to claim 4, characterized in that: The breathing airbag box also includes a gas regulating device, which is arranged on the outside of the box body and is connected to the air intake distributor. It is used to adjust the gas supply pressure of the air intake distributor according to the on-site environment and regulate the gas generated by the air intake distributor to generate the quantitative gas.

6. The air-distributed breathing apparatus according to claim 5, characterized in that: The gas regulating device comprises: a shell, a gas containing cavity, a gas supply pipeline, a pressure reducing valve, a flow control valve and a control button; The gas containing cavity is arranged in the shell; the gas containing cavity is used to contain gas; The air supply pipeline is connected to the air containing cavity and the air inhalation distributor; The pressure reducing valve is placed inside the housing, connected to the gas supply pipeline and connected to the control button, and the pressure reducing valve is controlled by operating the control button to adjust the gas provided by the gas containing cavity to the required pressure of the air inhalation distributor under the current environment; The flow control valve is connected to the one-way inhalation interface and is used to adjust the gas of the required pressure that has been adjusted to the quantitative gas required by the breathing mask.

7. The air-distributed breathing apparatus according to claim 3, characterized in that: The breathing airbag box also includes a carbon dioxide adsorber; the carbon dioxide adsorber is arranged on the one-way connecting pipeline, and the carbon dioxide adsorber is used to adsorb the carbon dioxide retained in the recovery accommodating cavity.

8. The air-distributed breathing apparatus according to claim 3, characterized in that: The breathing mask comprises: a silicone oral and nasal mask body, an elastic lace, a three-way valve and a one-way control diaphragm; The silicone oral and nasal mask body is used to accommodate the face; The elastic band is connected to the silicone oral and nasal mask body, and the silicone oral and nasal mask body can be worn on the head through the elastic band; The three-way valve is arranged at the bottom of the silicone oral and nasal mask body; the breathing mask is connected to the air inlet and outlet assembly through the three-way valve; The one-way control diaphragm is arranged in each valve port of the three-way valve, and is used to control the gas passing through each valve port to flow in a single line.

9. The air-distributed breathing apparatus according to claim 8, characterized in that: The air intake and exhaust assembly comprises: a first connecting hose and a second connecting hose; The first end of the first connecting hose is connected to the air inlet port of the three-way valve, and the second end of the first connecting hose is connected to the one-way air inlet port; The first end of the second connecting hose is connected to the exhaust valve port of the three-way valve, and the second end of the second connecting hose is connected to the one-way exhalation interface.

10. A breathing airbag box, characterized in that: include: Box, exhaled air recovery device, inhaled air distributor, one-way connecting pipe and shoulder strap; The exhaled air recovery device is arranged in the box body and can be connected to an external breathing mask to recover the waste gas discharged from the breathing mask; the waste gas includes unabsorbed oxygen and newly generated or unabsorbed carbon dioxide; The inhalation gas distributor is arranged in the box body and is located at the side of the exhalation recovery device, and can be connected to the breathing mask. The inhalation gas distributor is used to adjust the gas delivery volume in real time according to the ambient pressure to generate a fixed amount of gas, and deliver the gas to the breathing mask; the gas includes at least oxygen and carbon dioxide, and the content of the carbon dioxide is much smaller than the content of the oxygen; In the working mode, at the first moment, the inhalation gas distributor delivers the generated quantitative gas to the breathing mask for human body to inhale; at the second moment, the exhalation recovery device delivers the waste gas discharged from the breathing mask to the breathing airbag box for recovery, and in this way, the cycle is repeated to form a working mode that meets the breathing rhythm requirements of the human body; the first moment and the second moment can correspond to the moments corresponding to the breathing rhythm of the human body respectively; The one-way connecting pipeline is connected to the exhaled air recovery device and the inhaled air distributor, and the one-way connecting pipeline can transport the waste gas recovered by the exhaled air recovery device to the inhaled air distributor; The shoulder strap is arranged on the outside of the box body, and the box body can be carried by the shoulder strap.

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