CN221061537U - Positive pressure fire-fighting air respirator - Google Patents
Positive pressure fire-fighting air respirator Download PDFInfo
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- CN221061537U CN221061537U CN202322467345.5U CN202322467345U CN221061537U CN 221061537 U CN221061537 U CN 221061537U CN 202322467345 U CN202322467345 U CN 202322467345U CN 221061537 U CN221061537 U CN 221061537U
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims description 18
- 229920003023 plastic Polymers 0.000 claims description 18
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 65
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002341 toxic gas Substances 0.000 abstract description 3
- 239000000443 aerosol Substances 0.000 abstract 1
- 230000000241 respiratory effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses a positive pressure fire-fighting air respirator, which comprises a backboard bearing structure, wherein the surface of the backboard bearing structure is provided with a gas cylinder assembly, the bottom end of the gas cylinder assembly is provided with a gas cylinder valve, the gas cylinder valve is provided with two gas outlet ends, and one of the gas outlet ends of the gas cylinder valve is provided with a pressure reducer; the full face guard, the full face guard sets up in one side of gas cylinder assembly, the air inlet of full face guard is installed and is supplied air valve assembly. The utility model ensures that the pressure in the mask is always greater than the pressure of the external working environment, ensures that the external toxic gas, particles and aerosol cannot enter the mask, fully ensures the safety of a user, and ensures that the user opens the gas cylinder valve, so that the high pressure of high pressure air in the gas cylinder assembly is detected by the electronic residual air alarm device through the high pressure air pipe, and when the air pressure is too low, an alarm whistle in the respirator always gives out alarm until the air in the gas cylinder is exhausted, thereby reminding the user that the air margin is insufficient.
Description
Technical Field
The utility model relates to the technical field of respirators, in particular to a positive pressure type fire-fighting air respirator.
Background
A positive pressure fire air respirator is a device that protects firefighters or rescue workers from breathing in a hazardous environment. The function is to provide a clean air supply by maintaining a positive pressure and filtering harmful substances in the air, protecting the respiratory system from contaminants. The structure of this respirator includes face guard or respirator, filter core or canister, air feed system and wearing system, the theory of operation is that the compressed air in the gas cylinder is utilized as the air feed source, through regulator adjustment atmospheric pressure, and filter harmful granule and chemical in the air through filter core or canister, thereby provide clean air for the user, and establish positive pressure differential between face guard and face, prevent that harmful substance from getting into inside the respirator, including the braces main part if grant the multichannel positive pressure fire control air respirator that bulletin number is CN217448742U disclosed, the upper end surface of braces main part is provided with the gas cylinder, one side of gas cylinder is provided with the multichannel interface, one side surface of multichannel interface is provided with first pipe, one end of first pipe is provided with first respiratory mask, the upper end surface of braces main part is provided with the second respiratory mask, the front end surface of second respiratory mask is provided with the second pipe, one side surface of second pipe is provided with protection machanism, can conveniently carry the second respiratory mask, be convenient for install the multichannel interface, this can not lead to the fact the inside error in time and can't the inside the air cylinder to the difficult to judge the inside the air pressure of air cylinder, but can't be difficult to get into the accurate in the time and the difficult to get into the inside the difficult condition of the user, can's the difficult to judge the inside the difficult to get into the air pressure in the difficult condition, the inside the difficult to be difficult to get into the condition, the inside the user is difficult to the inside the air cylinder, the difficult to be measured and difficult to be used to the inside to be breathe easily to get out to the inside the air.
Disclosure of utility model
The utility model aims to provide a positive pressure type fire-fighting air respirator so as to solve the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a positive pressure fire air respirator comprising:
the gas cylinder assembly is arranged on the surface of the backboard bearing structure, a gas cylinder valve is arranged at the bottom end of the gas cylinder assembly, two gas outlet ends are arranged on the gas cylinder valve, and a pressure reducer is arranged at one of the gas outlet ends of the gas cylinder valve;
The full face mask is arranged on one side of the gas cylinder assembly, the gas inlet of the full face mask is provided with the gas supply valve assembly, the gas inlet of the gas supply valve assembly is connected with the gas outlet end of the pressure reducer through a hose structure, and the pressure head-up display device is arranged in the full face mask;
The high-pressure air pipe is arranged at the other air outlet end of the air cylinder valve, and an electronic residual air alarm device is arranged at one end, far away from the air cylinder valve, of the high-pressure air pipe.
Preferably, one end of the surface of the gas cylinder assembly is provided with a gas pressure mark.
Preferably, the hose structure is a medium-pressure main pipe arranged at the air outlet end of the pressure reducer and a medium-pressure auxiliary pipe arranged at the air inlet end of the air supply valve assembly, and the ends of the medium-pressure main pipe and the medium-pressure auxiliary pipe close to each other are connected in a conducting manner.
Preferably, the air supply valve assembly comprises valve casing, plastics quick-operation joint and plastics apron, plastics quick-operation joint are installed on the both sides outer wall of valve casing, control switch is installed on the top of valve casing, the one end cover on plastics quick-operation joint surface is equipped with the sealing washer.
Preferably, the backboard bearing structure comprises an inverted T-shaped backboard arranged on the back of the gas cylinder assembly and side straps arranged on the outer walls of two sides of the inverted T-shaped backboard, a front chest strap is arranged on the back of the side straps, a waistband is arranged on the outer wall of the inverted T-shaped backboard below the side straps, the ends of the front chest strap and the waistband are provided with eye-splice structures, and connecting straps are arranged between the side straps and the waistband on the same side.
Preferably, the inverted T-shaped backboard is made of a member made of flame retardant nylon.
Compared with the prior art, the utility model has the beneficial effects that: the positive pressure fire-fighting air respirator is provided with the structures of the pressure reducer, the electronic residual air alarming device and the like which are matched with each other, high-pressure air in the air bottle assembly is subjected to primary pressure reduction through the air bottle valve and the pressure reducer, positive pressure air is provided for a user through the full face mask after secondary pressure reduction is performed through the air supply valve assembly, at the moment, because the air supply valve assembly provides positive pressure air, the pressure in the face mask is always higher than the external working environment pressure, the external toxic gas, particles and air mist can not enter the face mask, the safety of the user is fully ensured, the air bottle valve is opened by the user, the high-pressure air in the air bottle assembly is detected by the electronic residual air alarming device through the high-pressure air pipe, the electronic residual air alarming device sends alarming sound through the buzzer of the electronic residual air bottle assembly, and the alarming whistle always sends alarming sound until the air in the air bottle is exhausted, so that the user is reminded of insufficient air allowance.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a schematic diagram of the front view of the back plate carrying structure of the present utility model;
FIG. 3 is a schematic side view of an air supply valve assembly of the present utility model;
In the figure: 1. a gas cylinder assembly; 2. a back plate carrying structure; 201. an inverted T-shaped backboard; 202. a side brace; 203. a waistband; 204. a connecting belt; 205. a buckle structure; 206. a front chest strap; 3. a pressure reducer; 4. an electronic residual gas alarm device; 5. a medium voltage main pipe; 6. an air supply valve assembly; 601. a plastic cover plate; 602. a plastic quick connector; 603. a seal ring; 604. a valve housing; 605. a control switch; 7. a full face mask; 8. an air pressure mark; 9. a pressure head-up display device; 10. a high pressure gas pipe; 11. a medium pressure secondary pipe; 12. a gas cylinder valve.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, an embodiment of the present utility model is provided: the positive pressure type fire-fighting air respirator comprises a backboard bearing structure 2, wherein a gas cylinder assembly 1 is arranged on the surface of the backboard bearing structure 2, and a gas pressure mark 8 is arranged at one end of the surface of the gas cylinder assembly 1;
The backboard backpack structure 2 comprises an inverted T-shaped backboard 201 arranged on the back of the gas cylinder assembly 1 and side braces 202 arranged on the outer walls of the two sides of the inverted T-shaped backboard 201, wherein the inverted T-shaped backboard 201 is made of flame-retardant nylon members, and the flame-retardant nylon inverted T-shaped backboard 201 has certain structural strength, is not easy to damage and is light in weight;
The back of the side brace 202 is provided with a front chest strap 206, the outer wall of the inverted T-shaped backboard 201 below the side brace 202 is provided with a waistband 203, the ends of the front chest strap 206 and the waistband 203 are provided with a buckle structure 205, and a connecting strap 204 is arranged between the side brace 202 and the waistband 203 on the same side;
the staff winds the front chest belt 206 and the eye-splice structure 205 to the front of the body, and connects the two eye-splice structures 205 and the two front chest belts 206 through the eye-splice structure 205, so that the air bottle assembly 1 is stably carried on the back of a user through the backboard carrying structure 2;
The bottom end of the gas cylinder assembly 1 is provided with a gas cylinder valve 12, the gas cylinder valve 12 is provided with two gas outlet ends, and one gas outlet end of the gas cylinder valve 12 is provided with a pressure reducer 3;
The full face mask 7 is arranged on one side of the gas cylinder assembly 1, the gas supply valve assembly 6 is arranged at the gas inlet of the full face mask 7, the gas supply valve assembly 6 consists of a valve shell 604, a plastic quick connector 602 and a plastic cover plate 601, the plastic cover plate 601 and the plastic quick connector 602 are arranged on the outer walls of the two sides of the valve shell 604, a control switch 605 is arranged at the top end of the valve shell 604, and a sealing ring 603 is sleeved at one end of the surface of the plastic quick connector 602;
The air inlet of the air supply valve assembly 6 is connected with the air outlet end of the pressure reducer 3 through a hose structure, the hose structure is a medium-pressure main pipe 5 arranged at the air outlet end of the pressure reducer 3, and a medium-pressure auxiliary pipe 11 arranged at the air inlet end of the air supply valve assembly 6, and the ends of the medium-pressure main pipe 5 and the medium-pressure auxiliary pipe 11 close to each other are connected in a conducting way;
The plastic cover plate 601 and the valve shell 604 in the air supply valve assembly 6 are light in weight and compact in structure and are made of fireproof and impact-resistant materials, the air supply valve assembly 6 is connected with the pressure reducer 3 through the middle pressure main pipe 5 and the middle pressure auxiliary pipe 11 by virtue of the control switch 605 and the plastic quick connector 602, when the breathing of a user is blocked, the air supply valve assembly 6 automatically increases the air supply amount to 450 liters/minute, the air supply amount of the air supply valve assembly 6 can be reached within one tenth of a second, and the air supply safety is ensured;
connecting one end of the medium-pressure main pipe 5 to the air outlet of the pressure reducer 3, connecting the medium-pressure auxiliary pipe 11 to the air inlet of the air supply valve assembly 6, then wearing the full face mask 7 by a user, and sequentially opening the air cylinder valve 12 and the air supply valve assembly 6, so that high-pressure air sequentially passes through the air cylinder valve 12, the pressure reducer 3, the medium-pressure main pipe 5, the medium-pressure auxiliary pipe 11 and the air supply valve assembly 6, and finally enters the full face mask 7;
The high-pressure air pipe 10, the high-pressure air pipe 10 is installed at the other air outlet end of the air bottle valve 12, and an electronic residual air alarm device 4 is installed at one end of the high-pressure air pipe 10 far away from the air bottle valve 12;
When a user wears the respirator through the backboard carrying structure 2, the full face mask 7 is worn on the face of the user, in the process, the electronic residual gas alarming device 4 is connected with one gas transmission port of the gas cylinder valve 12 through the high-pressure gas pipe 10, once the user opens the gas cylinder valve 12, the high pressure of high-pressure air in the gas cylinder assembly 1 is delivered through the high-pressure gas pipe 10, and is 30MPa initially, and when the pressure in the gas cylinder is reduced to 5.5+/-0.5 MPa, the electronic residual gas alarming device 4 sends out alarming sound through a buzzer of the electronic residual gas alarming device 4, and an alarming whistle always sends out alarming sound until the air in the gas cylinder is exhausted, so that the user is reminded of insufficient air allowance;
the pressure head-up display device 9 is arranged in the full face mask 7, the pressure head-up display device 9 receives signals of the digital display type pressure sensing controller FZK06C in the electronic residual gas alarm device 4 through wireless matching, an indicator lamp is used for displaying pressure change of a gas source in a gas cylinder, at the moment, the pressure head-up display device 9 provides a visible gas cylinder assembly gas source monitoring system, the pressure head-up display device 9 is arranged in the face mask, and residual light of eyes of a user can be observed.
When the embodiment of the application is used, firstly, one end of the medium pressure main pipe 5 is connected to the air outlet of the pressure reducer 3 by a user, the medium pressure auxiliary pipe 11 is connected to the air inlet of the air supply valve assembly 6, then the user wears the full face mask 7, and sequentially opens the air bottle valve 12 and the air supply valve assembly 6, so that high-pressure air sequentially passes through the air bottle valve 12, the pressure reducer 3, the medium pressure main pipe 5, the medium pressure auxiliary pipe 11 and the air supply valve assembly 6 and finally enters the full face mask 7, in the process, the high-pressure air in the air bottle assembly 1 is subjected to primary pressure reduction through the air bottle valve 12 and the pressure reducer 3, the pressure is reduced to 0.4-0.9 MPa and then is conveyed to the medium pressure main pipe 5 and the medium pressure auxiliary pipe 11, and then positive-pressure air is provided to the user through the full face mask 7 after the air supply valve assembly 6 is subjected to secondary pressure reduction, and at the moment, the pressure in the face mask 6 always provides positive-pressure air, the pressure in the face mask is higher than the external working environment pressure, the external toxic gas, particles and gas mist cannot enter the full face mask, the safety of the user can be ensured, the positive pressure treatment can ensure that the high-pressure output is in a proper pressure range and the proper pressure state. This helps to prevent harmful substances from entering the respirator from the outside, protects the respiratory system of the user from contaminants, while maintaining a proper internal pressure helps to provide a comfortable breathing environment, reducing discomfort and dyspnea for the user.
Claims (6)
1. Positive pressure fire air respirator, its characterized in that includes:
The gas cylinder comprises a back plate bearing structure (2), wherein a gas cylinder assembly (1) is arranged on the surface of the back plate bearing structure (2), a gas cylinder valve (12) is arranged at the bottom end of the gas cylinder assembly (1), two gas outlet ends are arranged on the gas cylinder valve (12), and a pressure reducer (3) is arranged at one of the gas outlet ends of the gas cylinder valve (12);
The full face mask (7), the full face mask (7) is arranged on one side of the gas cylinder assembly (1), an air supply valve assembly (6) is arranged at an air inlet of the full face mask (7), the air inlet of the air supply valve assembly (6) is connected with an air outlet end of the pressure reducer (3) through a hose structure, and a pressure head-up display device (9) is arranged in the full face mask (7);
The high-pressure air pipe (10), the other end that gives vent to anger at gas cylinder valve (12) is installed to high-pressure air pipe (10), the one end that gas cylinder valve (12) was kept away from to high-pressure air pipe (10) is installed electron residual gas alarm device (4).
2. The positive pressure fire air respirator of claim 1, wherein: one end of the surface of the gas cylinder assembly (1) is provided with a gas pressure mark (8).
3. The positive pressure fire air respirator of claim 1, wherein: the hose structure is a medium-pressure main pipe (5) arranged at the air outlet end of the pressure reducer (3), and a medium-pressure auxiliary pipe (11) arranged at the air inlet end of the air supply valve assembly (6), wherein the ends of the medium-pressure main pipe (5) and the medium-pressure auxiliary pipe (11) close to each other are connected in a conducting manner.
4. The positive pressure fire air respirator of claim 1, wherein: the air supply valve assembly (6) comprises a valve casing (604), a plastic quick connector (602) and a plastic cover plate (601), wherein the plastic cover plate (601) and the plastic quick connector (602) are arranged on the outer walls of the two sides of the valve casing (604), a control switch (605) is arranged at the top end of the valve casing (604), and a sealing ring (603) is sleeved at one end of the surface of the plastic quick connector (602).
5. The positive pressure fire air respirator of claim 1, wherein: the backboard backpack structure (2) comprises an inverted T-shaped backboard (201) arranged on the back of the gas cylinder assembly (1) and side straps (202) arranged on the outer walls of two sides of the inverted T-shaped backboard (201), a front chest strap (206) is arranged on the back of the side straps (202), a waistband (203) is arranged on the outer wall of the inverted T-shaped backboard (201) below the side straps (202), inserting and buckling structures (205) are arranged at the ends of the front chest strap (206) and the waistband (203), and connecting straps (204) are arranged between the side straps (202) and the waistband (203) on the same side.
6. The positive pressure fire air respirator of claim 5, wherein: the inverted T-shaped backboard (201) is made of a member made of flame retardant nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467345.5U CN221061537U (en) | 2023-09-12 | 2023-09-12 | Positive pressure fire-fighting air respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467345.5U CN221061537U (en) | 2023-09-12 | 2023-09-12 | Positive pressure fire-fighting air respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221061537U true CN221061537U (en) | 2024-06-04 |
Family
ID=91272420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322467345.5U Active CN221061537U (en) | 2023-09-12 | 2023-09-12 | Positive pressure fire-fighting air respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221061537U (en) |
-
2023
- 2023-09-12 CN CN202322467345.5U patent/CN221061537U/en active Active
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