Chemical oxygen generating medicine tank
Through the alternating layered structure of tic toe-shaped barbed wire mesh and Ball ring, combined with oxygen candles to provide initial oxygen and heat, the problems of uneven oxygen supply and slow start of the chemical oxygen medicine tank are solved, achieving sufficient oxygen supply within 4 hours.
Patent Information
- Application Number
- CN202421495611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The oxygen supply time of the existing fire respirator oxygen-generating medicine tank is short and uneven, and the heat loss leads to the reaction starting time being too long, affecting the task execution.
The alternating layered structure of tic toe-shaped barbed wire and Ball ring is adopted, combining oxygen candles to provide initial oxygen and heat to ensure uniform distribution of gases and rapid reaction.
The continuous oxygen supply of chemical student oxygen medicine tanks reaches more than 21% within 4 hours, avoiding task delays and meeting emergency needs.
Smart Images
Figure CN223143991U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of oxygen - generating medicine cans, and particularly relates to a chemical oxygen - generating medicine can. Background Technique
[0002] An accident occurred in previous years. When a fire - fighting officer participated in the rescue mission of a market fire, he got lost due to being in a dark and complex underground environment. At that time, the oxygen - generating medicine can of the fire - fighting respirator he carried could only maintain the oxygen - supply time for about 20 minutes. Eventually, the fire - fighting officer failed to evacuate the fire scene in such a pressing time and unfortunately sacrificed heroically. Therefore, the research and development of a fire - fighting respirator oxygen - generating medicine can that can maintain sufficient oxygen - supply duration has been put on the agenda. At the same time, since the situation is bound to be urgent when fire - fighting officers are dispatched to the fire scene, if the oxygen content of the oxygen - generating medicine can cannot reach the standard required for human breathing for a long time, it will also cause great difficulties in completing the mission. Therefore, this problem also needs to be solved together in the research of this utility model patent.
[0003] Now, the technical problems of the oxygen - generating medicine can part in a patent application named "Oxygen - generating can and respirator for respirator" applied by Dalian Shengmai New Materials Co., Ltd. on July 30, 2020 will be described in detail.
[0004] First, briefly describe the structure of the oxygen - generating medicine can. The outer shape of the medicine can is a cylinder, and the circular inlet and outlet are located at the centers of the upper and lower covers respectively. There are partitions in the medicine can, which are distributed in concentric circles with different diameters. The center of the circle is the central axis of the tank body, and its height is slightly less than the height of the tank body. In this way, the inside of the tank body is divided into multiple adjacent areas. Then, the oxygen candle is placed at the bottom of the innermost area, and the composite oxygen - generating agent is added above it to the top of the partition. Finally, the composite oxygen - generating agent and the cooling agent are alternately added to the top of the partition in the outermost areas in turn.
[0005] This structure has the following two problems:
[0006] 1. The gas exhaled by the human body enters the top of the chemical medicine can from the inlet. The height difference between the partition and the top of the medicine can at this place creates a small empty area. The exhaled gas is evenly distributed to the area at the lower end filled with the composite oxygen - generating agent through this empty area and reacts to generate oxygen. This is the design idea of this chemical oxygen - generating medicine can. However, this idea is obviously not perfect enough. The exhaled gas from the small - diameter inlet can evenly flow to the different large - diameter composite oxygen - generating agent areas at the lower end only through a small empty area at the top of the tank body. This situation is too idealistic. The actual result of its application is that the composite oxygen - generating agent in the central area has more opportunities to contact the exhaled gas, while the composite oxygen - generating agent farther away from the center has fewer opportunities to participate in the reaction. Eventually, the oxygen - generating reaction cannot occur evenly throughout the tank body, resulting in a shorter oxygen - supply duration of the chemical oxygen - generating medicine can or even insufficient oxygen generation and an oxygen content lower than 21%.
[0007] 2. Cooling agent areas are interspersed among different composite oxygen - generating agent areas. While it is a necessary factor to dissipate the heat of the gas generated by the chemical oxygen - generating medicine tank to prevent firefighters from feeling a burning sensation when inhaling, directly dissipating heat inside the chemical oxygen - generating medicine tank is unreasonable. The working principle of the chemical oxygen - generating medicine tank is as follows: In the initial stage of operation, the heat generated by the preferential reaction of a small part of the oxygen - generating agent is conducted to the unreacted oxygen - generating agent in other parts, thus promoting the reaction of this part of the oxygen - generating agent. The heat generated by the new reaction is then conducted to the next part of the unreacted oxygen - generating agent, and so on, forming a virtuous cycle that promotes the rapid occurrence of the reaction. Therefore, the heat inside the chemical oxygen - generating medicine tank is an important condition for promoting the rapid occurrence of the reaction and then quickly achieving sufficient oxygen supply with an oxygen content reaching 21%. Dissipating the precious reaction heat in the initial stage inside the chemical oxygen - generating medicine tank will make the start - up time to reach sufficient oxygen supply (the time required for the oxygen content to reach 21%) very long, bringing trouble to the already very urgent fire - fighting tasks of firefighters. Summary of the Invention
[0008] To solve the above - mentioned existing problems, the present utility model proposes a chemical oxygen - generating medicine tank, which includes an air inlet, a spring, a wire mesh, a wire - mesh column, a cross - shaped wire mesh, an oxygen - generating agent, a Pall ring, an oxygen candle, a fine wire mesh, and an air outlet. The chemical oxygen - generating medicine tank has a cylindrical shape. The air inlet is arranged above the cylinder, and the air outlet is arranged below the cylinder. The circular fine wire mesh is laid flat at the bottom of the medicine tank, and the oxygen candle is arranged at the bottom of the medicine tank. The cross - shaped wire mesh is vertically placed into the medicine tank. The horizontal direction inside the medicine tank is evenly divided into 9 relatively independent areas. The wire - mesh columns formed by rolling wire meshes are respectively vertically placed in the 5 areas with the largest space in the middle in a cross - shaped distribution. The 3 - layer oxygen - generating agent and 2 - layer Pall rings are alternately and evenly filled into the 9 areas inside the medicine tank. A circular wire mesh is covered on the top of the top - layer oxygen - generating agent, and 3 springs are fixed on the wire mesh by copper wires, and the upper ends of the springs abut against the top of the chemical oxygen - generating medicine tank.
[0009] Further, after a silica - gel O - ring is sleeved on the threaded root of the oxygen candle, it passes through the small hole at the bottom of the tank body, and the nut is screwed tightly with the thread of the oxygen candle.
[0010] Further, the inner diameter of the chemical oxygen - generating medicine tank is 165 mm, the height is 150 mm, and the volume is about 3.2 L.
[0011] Further, the Pall ring is a cylinder with a diameter of 10 mm and a height of 10 mm, and the filling height is 10 mm.
[0012] Further, the filling height of the oxygen - generating agent is 40 mm.
[0013] Further, the spring has a wire diameter of 2 mm, an outer diameter of 25 mm, a height of 10 mm in the compressed state, and a length of 25 mm in the longest stretched state, and is evenly distributed in a triangular shape on the wire mesh.
[0014] Further, the height of the cross-shaped wire mesh is 130 mm, and the height of the wire mesh column is 135 mm.
[0015] The beneficial effects of the present utility model are as follows: In the oxygen - generating agent of the oxygen - generating medicine tank of the present utility model, in addition to KO2, it also contains a variety of slow - release agents such as Al2O3, which can prevent the oxygen - generating agent from caking and blocking the gas flow during the operation of the chemical oxygen - generating medicine tank, affecting oxygen generation. It also contains a certain proportion of absorbents to accelerate the reaction and improve the oxygen - production efficiency.
[0016] The layered structure of the cross - shaped wire mesh, oxygen - generating agent, and Pall rings alternating with each other, the wire mesh column, and the structure of the wire mesh spring at the top of the medicine tank in the present utility model realize the homogeneous flow of gas in the medicine tank, which is the key design to achieve sufficient oxygen supply and maintain it for a sufficient duration.
[0017] The oxygen candle of the present utility model enables the chemical oxygen - generating medicine tank to quickly generate sufficient oxygen supply.
[0018] Currently, the oxygen - generating medicine tanks used in fire - fighting respirators on the market generally can only maintain sufficient oxygen supply for about 20 minutes. This chemical oxygen - generating medicine tank can conservatively extend this time to 4 hours, showing significant advantages when performing fire - fighting tasks in difficult places such as basements.
[0019] Existing chemical oxygen - generating medicine tanks generally have a problem of slow startup. If sufficient oxygen supply is to be achieved, a long waiting time is required, which delays the opportunity in performing emergency tasks. This chemical oxygen - generating medicine tank takes at most 7 minutes from the start of work to reach sufficient oxygen supply, without delaying the execution of fire - fighting tasks. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is the side view of the chemical oxygen - generating medicine tank of the present utility model;
[0021] Figure 2 is the top view of the chemical oxygen - generating medicine tank of the present utility model;
[0022] Among them, the reference numerals are: 1, air inlet; 2, spring; 3, wire mesh; 4, wire mesh column; 5, cross - shaped wire mesh; 6, oxygen - generating agent; 7, Pall ring; 8, oxygen candle; 81, small hole; 9, fine wire mesh; 10, air outlet. SPECIFIC EMBODIMENTS
[0023] A chemical oxygen - generating medicine tank, such as Figure 1 - Figure 2As shown in the figure, it includes an air inlet 1, a spring 2, a wire mesh 3, a wire mesh column 4, a grid-shaped wire mesh 5, a chemical oxygen generation agent 6, a Pall ring 7, an oxygen candle 8, a fine wire mesh 9, and an air outlet 10. The chemical oxygen generation medicine tank is cylindrical in shape. An air inlet 1 is provided above the cylinder, and an air outlet 10 is provided below the cylinder. The circular fine wire mesh 9 is laid flat at the bottom of the medicine tank. The oxygen candle 8 is arranged at the bottom of the medicine tank. The grid-shaped wire mesh 5 is vertically placed into the medicine tank. The horizontal direction inside the medicine tank is evenly divided into 9 relatively independent areas. The wire mesh columns 4 made of wire mesh are respectively vertically placed in the 5 areas with the largest space in the middle in a cross shape. The 3 layers of chemical oxygen generation agent 6 and 2 layers of Pall rings 7 are alternately and evenly filled into the 9 areas in the medicine tank. A circular wire mesh 3 is covered on the top of the chemical oxygen generation agent 6 at the top layer. Three springs 2 are fixed on the wire mesh 3 through copper wires, and the upper ends of the springs 2 abut against the top of the chemical oxygen generation medicine tank.
[0024] Medicine tank filling: The chemical oxygen generation medicine tank is cylindrical in shape, with an inner diameter of 165 mm, a height of 150 mm, and a volume of approximately 3.2 L.
[0025] First step, first lay the circular fine wire mesh 9 with a mesh number of 100 and a diameter slightly smaller than the inner diameter of the medicine tank flat at the bottom of the medicine tank. A silicone O-ring with a wire diameter of 2 mm and an outer diameter of 11 mm is sleeved on the threaded root of the oxygen candle 8, and then it passes through the φ8 small hole at the bottom of the tank body. Finally, the nut is screwed tightly with the thread of the oxygen candle 8. Very strict sealing measures are taken for the installation position of the oxygen candle to prevent the clean gas generated by the reaction from discharging from other pores except the air outlet 10.
[0026] Second step, vertically place the made grid-shaped wire mesh 5 with a height of 130 mm into the medicine tank. In this way, the inside of the medicine tank is evenly divided into 9 relatively independent areas in the horizontal direction. Then, 5 wire mesh columns 4 with a height of 135 mm and made of 40-mesh wire mesh are respectively vertically placed in the 5 areas with the largest space in the middle in a "cross" shape.
[0027] Third step, alternately and evenly fill the 9 areas in the medicine tank with 3 layers of chemical oxygen generation agent 6 and 2 layers of Pall rings 7. Among them, the filling height of the chemical oxygen generation agent 6 is 40 mm, and the main component is KO2. Its reaction with the dirty gas exhaled by the human body is 4KO2 + 2H2O = 4KOH + 3O2, 4KOH + 2CO2 = 2K2CO3 + 2H2O, so as to achieve the purpose of oxygen generation. The chemical oxygen generation agent 6 also contains an absorbent mainly composed of molecular sieve, which can absorb CO2 and H2O generated by the reaction, promote the reaction to proceed quickly, and improve the reaction efficiency. In addition, the chemical oxygen generation agent 6 also contains a small amount of corrosion inhibitor, including but not limited to Al2O3, and its main function is to prevent the chemical oxygen generation agent 6 from sintering into blocks and blocking the gas path during the oxygen generation process. The Pall ring 7 is a cylinder with a diameter of 10 mm and a height of 10 mm, and the filling height is 10 mm.
[0028] Step 4: Cover the top of the oxygen - generating agent 6 with a circular wire mesh 3 with a mesh size of 40 and a diameter slightly smaller than the inner diameter of the medicine can. Above the wire mesh 3, 3 springs 2 are fixed by copper wires. The wire diameter of the spring is 2mm, the outer diameter is 25mm, the height of the spring 2 in the compressed state is 10mm, and the length of the spring 2 in the longest stretched state is 25mm. They are evenly distributed in a triangular shape on the wire mesh 3. Finally, cover it, and the filling is completed.
[0029] Working principle:
[0030] The gas containing a large amount of CO2 and H2O exhaled by the human body (hereinafter referred to as "dirty gas") first comes to the space formed by the wire mesh 3, the springs 2 and the cover through the air inlet 1 at the top of the medicine can. Here, the dirty gas is preliminarily dispersed so that it can then fully and evenly contact the oxygen - generating agent 6 at different horizontal positions. However, it is unrealistic to expect that the dirty gas can still maintain a uniform horizontal distribution when it reaches the bottom of the medicine can only through this step of dispersion. Therefore, we use 5 wire - mesh columns 4, which stand in the middle of the oxygen - generating agent 6, and the pores at the upper end can further improve the uniform horizontal distribution of the gas after the dirty gas penetrates to the bottom of the medicine can. On the other hand, the oxygen - generating agent 6 is interspersed with layers of fluffy Pall rings 7, ensuring unobstructed penetration of the dirty gas in the vertical direction. The grid - shaped wire mesh 5 realizes the uniform filling of the oxygen - generating agent at each position by dividing the inside of the oxygen - generating medicine can into small areas. In this way, through the above - mentioned various structures and designs, the dirty gas can fully contact and react with the oxygen - generating agent in all directions and at all positions after entering the medicine can, achieving a sufficient oxygen supply with an oxygen content of more than 21% and a sufficient duration of more than 4 hours.
[0031] As mentioned above, the oxygen - generating agent 6 achieves the purpose of sufficient oxygen supply with an oxygen content of more than 21% by first reacting in some areas to generate heat to promote the continuous reaction in other areas, layer by layer, in a virtuous cycle. However, if this is the case, there is no heat inside the oxygen - generating medicine can at the initial stage of operation, which will make the start - up time to reach sufficient oxygen supply (the time required for the oxygen content to reach more than 21%) very long. Therefore, we use an oxygen candle 8 to help. The oxygen candle 8 is automatically started by a program as the chemical oxygen - generating medicine can starts to work. It releases a large amount of oxygen in a short time (1 minute) to fill the initial oxygen - generating gap. More importantly, it also releases heat intensively, quickly starting the reaction between the dirty gas and the oxygen - generating agent 6 and shortening the start - up time to reach sufficient oxygen supply (the time required for the oxygen content to reach 21%).
[0032] Finally, the clean gas generated by the medicine can is discharged through the 100 - mesh fine wire mesh 9 from the air outlet 10, waiting to be used by the human body for breathing. The fine wire mesh 9 can filter out particulate matter that is not conducive to human breathing. In this way, a chemical oxygen - generating medicine can that can quickly reach sufficient oxygen supply and has a sufficient duration completes a working cycle.
[0033] Alternative
[0034] 1. The space for gas divergence separated by wire mesh and spring at the top of the medicine canister can adopt a structure such as a placed dish-shaped structure to achieve the same structure and purpose.
[0035] 2. The design of the well-shaped wire mesh can be changed in terms of material or even name (such as partition) without changing the shape.
[0036] 3. The design of alternately layered filling of oxygen-generating agent and Pall rings is an innovation point, and the filling height can be adjusted.
[0037] 4. The wire mesh columns vertically inserted into the oxygen-generating agent for achieving uniform gas distribution in the horizontal direction can be replaced by other columnar structures with holes.
[0038] As described above, it is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.
Claims
1. A chemical oxygen - generating medicine canister, characterized in that, It includes an air inlet (1), a spring (2), a wire mesh (3), a wire mesh column (4), a cross-shaped wire mesh (5), an oxygen-generating agent (6), a Pall ring (7), an oxygen candle (8), a fine wire mesh (9) and an air outlet (10). The outer shape of the oxygen-generating medicine tank is a cylinder. An air inlet (1) is arranged above the cylinder, and an air outlet (10) is arranged below the cylinder. The circular fine wire mesh (9) is laid flat at the bottom of the medicine tank. The oxygen candle (8) is arranged at the bottom of the medicine tank. The cross-shaped wire mesh (5) is vertically placed into the medicine tank. The horizontal direction inside the medicine tank is evenly divided into 9 relatively independent areas. The wire mesh columns (4) rolled from wire meshes are respectively vertically placed in the 5 areas with the largest space in the middle in a cross distribution. Three layers of oxygen-generating agents (6) and two layers of Pall rings (7) are alternately and evenly filled into the 9 areas in the medicine tank. A circular wire mesh (3) is covered on the top of the top-layer oxygen-generating agent (6). Three springs (2) are fixed above the wire mesh (3) through copper wires. The upper ends of the springs (2) abut against the top of the oxygen-generating medicine tank.
2. The chemical oxygen generating medicine canister according to claim 1, characterized in that, A silicone O-ring is sleeved on the thread root of the oxygen candle (8), and then it passes through a small hole (81) at the bottom of the tank body, and a nut is screwed tightly with the thread of the oxygen candle (8).
3. The chemical oxygen - generating medicine canister according to claim 1, characterized in that, The inner diameter of the oxygen-generating medicine tank is 165 mm, the height is 150 mm, and the volume is about 3.2 L.
4. The chemical oxygen generating medicine tank according to claim 1, wherein, The Pall ring (7) is a cylinder with a diameter of 10 mm and a height of 10 mm, and the filling height is 10 mm.
5. The chemical oxygen generating medicine canister according to claim 1, wherein, The filling height of the oxygen-generating agent (6) is 40 mm.
6. The chemical oxygen generating medicine canister according to claim 1, characterized in that, The wire diameter of the spring (2) is 2 mm, the outer diameter is 25 mm, the height of the spring (2) in the compressed state is 10 mm, and the length of the spring (2) in the longest stretched state is 25 mm. It is distributed on the wire mesh (3) in a uniform triangular shape.
7. The chemical oxygen generating medicine tank according to claim 1, characterized in that, The height of the cross-shaped wire mesh (5) is 130 mm, and the height of the wire mesh column (4) is 135 mm.