Isolated chemical oxygen self-rescue respirator
The self-contained chemical oxygen respirator, through its isolation design and multi-layer filtration structure, solves the problems of hypoxia and poisoning in existing self-contained respirators in hypoxic and toxic environments, achieving sufficient oxygen supply and full absorption of carbon dioxide, thus improving the user's breathing comfort and safety.
Patent Information
- Application Number
- CN202423247772.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-27
AI Technical Summary
When existing chemical oxygen self-rescue devices are used in oxygen-deficient and toxic environments, users may experience oxygen deficiency and poisoning, and carbon dioxide may not be fully absorbed.
This self-rescue respirator uses an isolation chemical oxygen respirator. It utilizes a gas channel and a built-in oxygen candle to isolate the respiratory system from the outside world. Oxygen is generated through the gas channel and the built-in oxygen candle, while ensuring full absorption of carbon dioxide. It employs a multi-layer filtration structure and a one-way exhaust valve to prevent harmful gases from entering.
In oxygen-deficient and toxic environments, it ensures a sufficient oxygen supply, avoids poisoning, improves breathing comfort, and has advantages such as small size, light weight, rapid oxygen generation, large oxygen generation capacity, and high oxygen purity.
Smart Images
Figure CN223716227U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to respirator technical field relates to the isolation type chemical oxygen self-rescue respirator. BACKGROUND
[0002] Chemical oxygen self-rescuer (hereinafter referred to as self-rescuer) is a personal breathing system protection device made by using the principle of chemical reaction oxygen generation. The chemical oxygen self-rescuer adopts a reciprocating breathing system, and the breathing system is isolated from the outside air during use, and is not affected by harmful gases in the external environment. The existing self-rescuer uses a circulating structure, and the carbon dioxide exhaled by the human body reacts with the chemical tank and potassium hyperoxide to generate oxygen, which enters the air bag, and the human body inhales oxygen from the air bag. In this way, the carbon dioxide is only passed through the chemical tank once, and the unabsorbed carbon dioxide mixed with oxygen is absorbed by the human body, and the user may appear hypoxia and poisoning phenomenon. SUMMARY
[0003] The utility model discloses an isolated chemical oxygen self-rescue respirator, which solves the problem that the user of the existing self-rescuer will produce hypoxia and poisoning when used in a dangerous environment with hypoxia and toxic substances.
[0004] The utility model discloses a technical scheme that an isolated chemical oxygen self-rescue respirator, including chemical tank, the chemical tank is connected with breathing hose, air bag respectively, the chemical tank includes jar body, the top layer is set to the top of the jar body, the middle layer is set to the upper middle part, the bottom layer is set to the bottom, and the top layer and the middle layer are filled with different specifications of oxygen generating agent between the middle layer and the bottom layer, the gas passage is surrounded by the gas-liquid filter screen in the jar body, the gas passage passes through the top layer and the middle layer, and the gas passage is not filled with oxygen generating agent, the upper half of the gas passage is connected with the air pipe, and the bottom is pressed against the bottom cover of the jar body, the air pipe is connected with the breathing hose, the built-in oxygen candle is arranged in the jar body, the top end of the built-in oxygen candle is connected with the oxygen candle starting device, the oxygen candle starting device is located at the top of the jar body, and the bottom end of the built-in oxygen candle is located between the middle layer and the bottom layer.
[0005] The utility model has the characteristics that:
[0006] The top layer includes filter cotton layer a, upper bearing plate, filter cotton layer a and upper bearing net which are sequentially attached from top to bottom, a pressing ring is fixed on the uppermost filter cotton layer a, and a pressing ring is also fixed below the upper bearing net;
[0007] The middle layer includes middle separation net, and a pressing ring is fixed below the middle separation net;
[0008] The bottom layer includes lower bearing net, filter cotton layer b, lower bearing plate and filter cotton layer b which are sequentially attached from top to bottom, and a pressing ring is fixed below the lowermost filter cotton layer b.
[0009] The self-rescuer further comprises an upper shell and a lower bottom shell in a buckling arrangement, the upper shell is provided with a left sealing belt group and a right sealing belt group on both sides respectively, and the upper shell and the lower bottom shell are locked and fixed through the left sealing belt group and the right sealing belt group; the medicine tank is arranged in a buckling space formed by the upper shell and the lower bottom shell.
[0010] The lower bottom shell is provided with a waist buckle on one side.
[0011] The upper shell and the lower bottom shell are both ABS engineering plastic injection shells.
[0012] The air bag is provided with an exhaust valve, the exhaust valve is a one-way valve, the opening pressure of the exhaust valve is 150-300 pa, and the valve plate of the exhaust valve is a silica gel valve plate.
[0013] The medicine tank is provided with a heat insulation pad on the outer side of the tank wall.
[0014] The medicine loading amount between the middle top layer and the middle layer in the medicine tank is 200g±5g, and the medicine loading amount between the middle layer and the bottom layer is 300g±5g.
[0015] The breathing hose is connected with a half mask, and the half mask is a silica gel injection mouthpiece.
[0016] The self-rescuer has the advantages that:
[0017] The self-rescuer has the advantages that: The self-rescuer has the advantages that:
[0018] Figure 1 is a structure schematic view of the self-rescuer;
[0019] Figure 2 is a structure schematic view of the medicine tank in the self-rescuer;
[0020] Figure 3 is Figure 2 a local enlarged view of the middle H;
[0021] Figure 4 is Figure 2 a local enlarged view of the middle W.
[0022] In the diagram, 1. Lower shell, 2. Airbag, 3. Exhaust valve, 4. Heat insulation pad, 5. Medicine canister, 6. Headgear assembly, 7. Breathing hose, 8. Half mask, 9. Left sealing belt assembly, 10. Upper shell, 11. Right sealing belt assembly, 12. Waist buckle, 13. Built-in oxygen candle, 14. Gas channel, 15. Air delivery tube, 16. Upper support plate, 17. Filter cotton layer a, 18. Upper support mesh, 19. High-density irregular KO2 oxygen generator, 20. Middle partition mesh, 21. Pressure ring, 22. 30-type φ8 KO2 oxygen generator, 23. Lower support mesh, 24. Filter cotton layer b, 25. Lower support plate, 26. Bottom cover. Detailed Implementation
[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Example 1
[0025] This embodiment provides a self-contained chemical oxygen respirator, such as... Figure 1 As shown, the device includes a medicine container 5, which is connected to a breathing hose 7 and an air bag 2. The medicine container 5 includes a container body, with a top partition near the top, a middle partition in the upper middle, and a bottom partition inside the container body. Different specifications of oxygen-generating agents are filled between the top partition and the middle partition, and between the middle partition and the bottom partition. A gas channel 14 formed by a gas-liquid filter screen is provided in the container body. The gas channel 14 passes through the top partition and the middle partition, and is not filled with oxygen-generating agents. The upper half of the gas channel 14 is connected to a gas guide tube 15, and the bottom abuts against the bottom cover 26 of the container body. The gas guide tube 15 is connected to the breathing hose 7. An internal oxygen candle 13 is provided in the container body. An oxygen candle activation device is connected to the top of the internal oxygen candle 13. The oxygen candle activation device is located at the top of the container body. The bottom of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0026] This embodiment represents only a preferred implementation of the self-rescue respirator for isolated chemical oxygen. Any self-rescue respirator designed with similar technical features to this invention will fall within the protection scope of the self-rescue respirator for isolated chemical oxygen.
[0027] Example 2
[0028] This embodiment provides an isolation-type chemical oxygen self-rescue respirator, including a medicine canister 5, which is connected to a breathing hose 7 and an air bag 2, respectively. Figure 2As shown, the medicine tank 5 comprises a tank body, a top partition is arranged in the tank body near the top, a middle partition is arranged in the upper middle part, and a bottom partition is arranged at the bottom, different specifications of oxygen generators are filled between the top partition and the middle partition and between the middle partition and the bottom partition, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top partition and the middle partition, and the gas passage 14 is not filled with oxygen generators, a gas guide pipe 15 is connected to the upper half of the gas passage 14, and the bottom of the gas guide pipe 15 abuts against the bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an internal oxygen candle 13 is arranged in the tank body, the top end of the internal oxygen candle 13 is connected with an oxygen candle starting device, the oxygen candle starting device is located at the top of the tank body, and the bottom end of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0029] As shown in the drawings, Figure 3 The top partition comprises, from top to bottom, a filter cotton layer a17, an upper supporting plate 16, a filter cotton layer a17, and an upper supporting net 18, a pressing ring 21 is fixed on the uppermost filter cotton layer a17, and a pressing ring 21 is also fixed below the upper supporting net 18.
[0030] The middle partition comprises a middle partition net 20, and a pressing ring 21 is fixed below the middle partition net 20.
[0031] As shown in the drawings, Figure 4 The bottom partition comprises, from top to bottom, a lower supporting net 23, a filter cotton layer b24, a lower supporting plate 25, and a filter cotton layer b24, and a pressing ring 21 is fixed below the lowermost filter cotton layer b24.
[0032] This embodiment only represents a preferred embodiment of the sealed chemical oxygen self-rescuer of the utility model, and any self-rescuer designed by using similar technical features of the utility model will fall within the protection scope of the sealed chemical oxygen self-rescuer of the utility model.
[0033] Embodiment 3
[0034] The embodiment provides a sealed chemical oxygen self-rescuer, which comprises a medicine tank 5, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2, as shown in the drawings, Figure 2As shown, the medicine tank 5 comprises a tank body, a top partition is arranged in the tank body near the top, a middle partition is arranged in the upper middle part, and a bottom partition is arranged at the bottom, different specifications of oxygen generators are filled between the top partition and the middle partition and between the middle partition and the bottom partition, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top partition and the middle partition, and the gas passage 14 is not filled with oxygen generators, the upper half of the gas passage 14 is connected with a gas guide pipe 15, the bottom of the gas guide pipe 15 abuts against the bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an internal oxygen candle 13 is arranged in the tank body, the top end of the internal oxygen candle 13 is connected with an oxygen candle starting device, the oxygen candle starting device is located at the top of the tank body, and the bottom end of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0035] Further comprising an upper shell 10 and a lower bottom shell 1 arranged in a buckling mode, the upper shell 10 and the lower bottom shell 1 are both ABS engineering plastic injection shells with flame retardant performance, the upper shell 10 is provided with a left sealing tape group 9 and a right sealing tape group 11 on both sides respectively, the left sealing tape group 9 and the right sealing tape group 11 are both made of 304 stainless steel and are corrosion resistant, the upper shell 10 and the lower bottom shell 1 are locked and fixed through the left sealing tape group 9 and the right sealing tape group 11 to isolate external air from entering the shell, and the medicine tank is arranged in the buckling space formed by the upper shell 10 and the lower bottom shell 1.
[0036] The lower bottom shell 1 is provided with a waist buckle 12 on one side and is made of 304 stainless steel, so that the self-rescuer can be conveniently fixed on the waist for carrying.
[0037] The embodiment only represents the preferred embodiment of the isolation type chemical oxygen self-rescuer, and any self-rescuer designed by using similar technical features of the self-rescuer will fall within the protection scope of the isolation type chemical oxygen self-rescuer.
[0038] Embodiment 4
[0039] The embodiment provides an isolation type chemical oxygen self-rescuer which comprises a medicine tank 5, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2 respectively, the medicine tank 5 comprises a tank body, a top partition is arranged in the tank body near the top, a middle partition is arranged in the upper middle part, and a bottom partition is arranged at the bottom, different specifications of oxygen generators are filled between the top partition and the middle partition and between the middle partition and the bottom partition, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top partition and the middle partition, and the gas passage 14 is not filled with oxygen generators, the upper half of the gas passage 14 is connected with a gas guide pipe 15, the bottom of the gas guide pipe 15 abuts against the bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an internal oxygen candle 13 is arranged in the tank body, the top end of the internal oxygen candle 13 is connected with an oxygen candle starting device, the oxygen candle starting device is located at the top of the tank body, and the bottom end of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0040] The air bag 2 is provided with an exhaust valve 3, the shell of the exhaust valve 3 is made of ABS engineering plastic injection, has the performance of preventing fire resistance, the exhaust valve 3 is a one-way valve, has reverse air tightness, can effectively prevent the toxic and harmful gas from entering the human body from the exhaust valve 3 when inhaling, the opening pressure of the exhaust valve 3 is 150, the pressure in the air bag is kept in the comfortable range of human respiration, and the valve piece of the exhaust valve 3 is a silica gel valve piece, the silica gel material is non-toxic, non-irritating and non-allergic to the human body.
[0041] The embodiment only represents the preferred embodiment of the sealed chemical oxygen self-rescuer of the utility model, and any self-rescuer designed by using similar technical features of the utility model will fall within the protection scope of the sealed chemical oxygen self-rescuer of the utility model.
[0042] Embodiment 5
[0043] The embodiment provides a sealed chemical oxygen self-rescuer, which comprises a medicine tank 5, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2 respectively, the medicine tank 5 comprises a tank body, a top partition is arranged at the top of the tank body, a middle partition is arranged at the upper middle part of the tank body, and a bottom partition is arranged at the bottom of the tank body, different specifications of oxygen generators are filled between the top partition and the middle partition and between the middle partition and the bottom partition, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top partition and the middle partition, and the gas passage 14 is not filled with oxygen generators, a gas guide pipe 15 is connected to the upper half of the gas passage 14 and abuts against the bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an internal oxygen candle 13 is arranged in the tank body, the top end of the internal oxygen candle 13 is connected with an oxygen candle starting device, the oxygen candle starting device is located at the top of the tank body, and the bottom end of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0044] The filling amount of the high-density irregular KO2 oxygen generator 19 between the top partition and the middle partition in the medicine tank 5 is 205g, and the filling amount of the 30-type φ8 medicine KO2 oxygen generator 22 (protection time 30min, KO2 oxygen generator tablet with a diameter of 8mm) between the middle partition and the bottom partition is 305g.
[0045] The air bag 2 is provided with an exhaust valve 3, the shell of the exhaust valve 3 is made of ABS engineering plastic injection, has the performance of preventing fire resistance, the exhaust valve 3 is a one-way valve, has reverse air tightness, can effectively prevent the toxic and harmful gas from entering the human body from the exhaust valve 3 when inhaling, the opening pressure of the exhaust valve 3 is 150, the pressure in the air bag is kept in the comfortable range of human respiration, and the valve piece of the exhaust valve 3 is a silica gel valve piece, the silica gel material is non-toxic, non-irritating and non-allergic to the human body.
[0046] The embodiment only represents the preferred embodiment of the isolated chemical oxygen self-rescuer of the present application, and any self-rescuer designed by using similar technical features of the present application will fall within the protection scope of the isolated chemical oxygen self-rescuer of the present application.
[0047] Embodiment 6
[0048] The embodiment provides an isolated chemical oxygen self-rescuer, which comprises a medicine tank 5, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2 respectively, the medicine tank 5 comprises a tank body, a top layer is arranged at a position close to a top of the tank body, a middle layer is arranged at a middle upper part of the tank body, and a bottom layer is arranged at a bottom of the tank body, different specifications of oxygen generators are filled between the top layer and the middle layer and between the middle layer and the bottom layer, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top layer and the middle layer, and the gas passage 14 is not filled with the oxygen generators, a gas guide pipe 15 is connected to an upper half of the gas passage 14 and abuts against a bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an inbuilt oxygen candle 13 is arranged in the tank body, the inbuilt oxygen candle 13 is connected with an oxygen candle starting device at a top end, the oxygen candle starting device is arranged at a top position outside the tank body, and a bottom end of the inbuilt oxygen candle 13 is located between the middle layer and the bottom layer.
[0049] A heat insulation pad 4 is arranged on an outer side of a tank wall of the medicine tank 5, so that high temperature generated by the tank wall during use of the product is effectively insulated, and the user is prevented from being scalded, the upper cover reflective sticker is made of 0.3mm PVC reflective strips, so that the user can be easily found in a dark environment, and a head-mounted group 6 in the form of a strip is further arranged on the medicine tank 5, the head-mounted group 6 is made of a flame-retardant material, and the user can conveniently wear the head-mounted group 6 on the neck during use.
[0050] The loading amount of the high-density irregular KO2 oxygen generator 19 between the top layer and the middle layer in the medicine tank 5 is 195g, and the loading amount of the 30-type φ8 KO2 oxygen generator 22 (protection time 30min, diameter 8mm) between the middle layer and the bottom layer is 295g.
[0051] The embodiment only represents the preferred embodiment of the isolated chemical oxygen self-rescuer of the present application, and any self-rescuer designed by using similar technical features of the present application will fall within the protection scope of the isolated chemical oxygen self-rescuer of the present application.
[0052] Embodiment 7
[0053] The embodiment provides an isolated chemical oxygen self-rescuer, which comprises a medicine tank 5, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2 respectively, the medicine tank 5 comprises a tank body, a top layer is arranged at a position close to a top of the tank body, a middle layer is arranged at a middle upper part of the tank body, and a bottom layer is arranged at a bottom of the tank body, different specifications of oxygen generators are filled between the top layer and the middle layer and between the middle layer and the bottom layer, a gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage 14 passes through the top layer and the middle layer, and the gas passage 14 is not filled with the oxygen generators, a gas guide pipe 15 is connected to an upper half of the gas passage 14 and abuts against a bottom cover 26 of the tank body, the gas guide pipe 15 is connected with the breathing hose 7, an inbuilt oxygen candle 13 is arranged in the tank body, the inbuilt oxygen candle 13 is connected with an oxygen candle starting device at a top end, the oxygen candle starting device is arranged at a top position outside the tank body, and a bottom end of the inbuilt oxygen candle 13 is located between the middle layer and the bottom layer. Figure 1As shown, including the medicine tank 5, the tank wall outside the medicine tank 5 is provided with a heat insulation pad 4, the medicine tank 5 is connected with a breathing hose 7 and an air bag 2 respectively, the air bag 2 is provided with an exhaust valve 3, the exhaust valve 3 is a one-way valve, the opening pressure of the exhaust valve 3 is 200pa, and the valve plate of the exhaust valve 3 is a silica gel valve plate, the breathing hose 7 is connected with a half mask 8, the breathing hose is added between the half mask and the air bag air path, the oxygen inhalation temperature is ensured to be comfortable, and the half mask 8 is a silica gel injection mouthpiece, which can form a chemical reaction environment isolated from air between the human body and the product.
[0054] The medicine tank 5 includes a tank body, a top partition is arranged in the tank body near the top, a middle partition is arranged in the upper middle part, and a bottom partition is arranged at the bottom. Different specifications of oxygen generators are filled between the top partition and the middle partition and between the middle partition and the bottom partition. A gas passage 14 surrounded by a gas-liquid filter screen is arranged in the tank body. The gas passage 14 passes through the top partition and the middle partition, and the gas passage 14 is not filled with oxygen generators. A gas guide pipe 15 is connected to the upper half of the gas passage 14 and abuts against the bottom cover 26 of the tank body. The gas guide pipe 15 is connected to the breathing hose 7. An internal oxygen candle 13 is arranged in the tank body. The top end of the internal oxygen candle 13 is connected to an oxygen candle starting device. The oxygen candle starting device is located at the top of the tank body outside. The bottom end of the internal oxygen candle 13 is located between the middle partition and the bottom partition.
[0055] The top partition includes filter cotton layers a17, upper bearing plates 16, filter cotton layers a17, and upper bearing nets 18 arranged in sequence from top to bottom. Pressure rings 21 are fixed to the uppermost filter cotton layers a17. The lower part of the upper bearing net 18 is also fixed with a pressure ring 21.
[0056] The middle partition includes a middle partition net 20, and the lower part of the middle partition net 20 is fixed with a pressure ring 21.
[0057] The bottom partition includes lower bearing nets 23, filter cotton layers b24, lower bearing plates 25, and filter cotton layers b24 arranged in sequence from top to bottom. Pressure rings 21 are fixed to the lowermost filter cotton layers b24.
[0058] The self-rescue breathing apparatus also includes an upper shell 10 and a lower bottom shell 1 arranged in sequence from top to bottom. The upper shell 10 and the lower bottom shell 1 are both ABS engineering plastic injection shells. Left and right sealing tape groups 9 and 11 are arranged on both sides of the upper shell 10. The upper shell 10 and the lower bottom shell 1 are locked and fixed by the left and right sealing tape groups 9 and 11. The medicine tank is arranged in the clamping space formed by the upper shell 10 and the lower bottom shell 1. The lower bottom shell 1 is provided with a waist buckle 12 on one side.
[0059] The high-density irregular KO2 oxygen generating agent 19 between the top partition and the middle partition in the medicine tank 5 is 200g, and the 30-type φ8 medicine KO2 oxygen generating agent 22 (protection time 30min, diameter of KO2 oxygen generating agent tablet 8mm) between the middle partition and the bottom partition is 300g, and the effective protection time is 33min after testing, which reaches the expected protection time and reserves 10% of the time.
[0060] The embodiment only represents the preferred embodiment of the sealed chemical oxygen self-rescuer of the utility model, and any self-rescuer designed by using similar technical features of the utility model will fall within the protection scope of the sealed chemical oxygen self-rescuer of the utility model.
[0061] The working principle of the sealed chemical oxygen self-rescuer of the utility model is as follows:
[0062] When the user uses, the half mask 8 is worn on the face, covering the mouth and nose, and the human body exhaled gas enters the medicine tank 5 through the air guide pipe 15, and the oxygen gas generated by the chemical reaction of the KO2 oxygen generating agent (potassium superoxide) in the medicine tank through the gas channel formed by the gas-liquid filter screen, part of the generated oxygen gas is in the medicine tank 5, and the other part enters the air bag 2, and when inhaling, the gas in the air bag 2 is inhaled into the human body together with the gas in the medicine tank 5, and oxygen is supplied to the user.
[0063] The exhalation path and the inhalation path are respectively:
[0064] The exhalation path is: lung exhalation→mouthpiece→mouthpiece radiator→exhalation hose→oxygen generating medicine tank (water vapor and CO2 in exhalation react with oxygen generating agent to generate O2)→medicine tank, air bag;
[0065] The inhalation path is: oxygen mixed gas in the air bag→medicine tank→breathing hose→mouthpiece radiator→mouthpiece→human lung.
[0066] The reaction formula of the oxygen generating agent (potassium superoxide) is as follows:
[0067] 2KO2+H2O→2KOH+1 O2+heat
[0068] 2KOH+CO2→K2CO3+H2O+heat
[0069] When the oxygen generated by the oxygen generating agent exceeds the oxygen consumption of the human body, the pressure in the air bag gradually increases, and when the exhaust valve opening pressure is reached, the valve of the exhaust valve is automatically opened, and the excess gas is discharged. When the pressure in the air bag is less than the exhaust valve opening pressure, the exhaust valve is automatically closed, and the breathing is ensured to be normal.
Claims
1. An isolating chemical oxygen self-rescue respirator, comprising a medicine tank (5) connected with a breathing hose (7) and an air bag (2) respectively, characterized in that, The medicine tank (5) comprises a tank body, a top partition layer arranged in the tank body near the top, a middle partition layer arranged in the upper middle part, and a bottom partition layer arranged in the bottom, different specifications of oxygen generators are filled between the top partition layer and the middle partition layer and between the middle partition layer and the bottom partition layer, a gas passage (14) surrounded by a gas-liquid filter screen is arranged in the tank body, the gas passage (14) passes through the top partition layer and the middle partition layer, and the gas passage (14) is not filled with oxygen generators, the upper half of the gas passage (14) is connected with a gas guide pipe (15), and the bottom of the gas guide pipe (15) abuts against a bottom cover (26) of the tank body, the gas guide pipe (15) is connected with a breathing hose (7), an inbuilt oxygen candle (13) is arranged in the tank body, the top end of the inbuilt oxygen candle (13) is connected with an oxygen candle starting device, the oxygen candle starting device is arranged at the top outside the tank body, and the bottom end of the inbuilt oxygen candle (13) is located between the middle partition layer and the bottom partition layer.
2. The self-contained chemical oxygen inhalator according to claim 1, wherein The top partition layer comprises, from top to bottom, a filter cotton layer a (17), an upper supporting plate (16), a filter cotton layer a (17), and an upper supporting net (18) arranged in sequence, a pressing ring (21) is fixed on the uppermost filter cotton layer a (17), and a pressing ring (21) is also fixed below the upper supporting net (18). The middle partition layer comprises a middle partition net (20), and a pressing ring (21) is fixed below the middle partition net (20). The bottom partition layer comprises, from top to bottom, a lower supporting net (23), a filter cotton layer b (24), a lower supporting plate (25), and a filter cotton layer b (24) arranged in sequence, and a pressing ring (21) is fixed below the lowermost filter cotton layer b (24).
3. The self-contained chemical oxygen inhalator according to claim 1, wherein The self-rescue breathing apparatus further comprises an upper shell (10) and a lower bottom shell (1) arranged in sequence, left and right sealing belt groups (9) and (11) are arranged on the two sides of the upper shell (10) respectively, the upper shell (10) and the lower bottom shell (1) are locked and fixed through the left and right sealing belt groups (9) and (11), and the medicine tank is arranged in a clamping space formed by the upper shell (10) and the lower bottom shell (1).
4. The self-contained chemical oxygen inhalator according to claim 3, wherein One side of the lower bottom shell (1) is provided with a waist buckle (12).
5. The self-contained chemical oxygen inhalator according to claim 3, wherein The upper shell (10) and the lower bottom shell (1) are both ABS engineering plastic injection shells.
6. The self-contained chemical oxygen inhalator according to claim 1, wherein An exhaust valve (3) is arranged on the air bag (2), the exhaust valve (3) is a one-way valve, the opening pressure of the exhaust valve (3) is 150-300 pa, and the valve plate of the exhaust valve (3) is a silica gel valve plate.
7. The self-contained chemical oxygen inhalator according to claim 1, wherein A heat insulation pad (4) is arranged on the outer side of the tank wall of the medicine tank (5).
8. The self-contained chemical oxygen inhalator according to claim 1, wherein The loading amount between the top partition layer and the middle partition layer in the medicine tank (5) is 200g±5g, and the loading amount between the middle partition layer and the bottom partition layer is 300g±5g.
9. The self-contained chemical oxygen inhalator according to claim 1, wherein A half mask (8) is connected with the breathing hose (7), and the half mask (8) is a silica gel injection mouthpiece.