Isolated composite oxygen self-rescuer

Abstract

The utility model relates to an isolation type composite oxygen self-rescuer which comprises a lower shell, an upper cover, an opening mechanism and a composite oxygen self-rescue mechanism, and the self-rescue mechanism comprises a compressed oxygen bottle, a control valve group, a shifting piece, a pressure gauge, an air supplementing pressure plate, a carbon dioxide adsorption cavity, an oxygen mask, an expiration pipe, an upper filter screen, a breathable bottom plate, a threaded plug and an air guide pipe. According to the underground breathing self-rescuer, the shell is convenient to open, the oxygen valve group is convenient to open, oxygen is continuously and stably supplied, the harm of oxygen supply temperature to a human body is effectively reduced, the size is small, the weight is light, and the problems that the shell is inconvenient to open, the oxygen valve group is tedious to open, and a chemical oxygen self-rescuer is low in early-stage concentration; the compressed oxygen self-rescuer filled with a large amount of calcium hydroxide and oxygen is large in capacity and heavy in weight, and compared with the prior art, the compressed oxygen self-rescuer has good market prospects and development space.

Description

Technical Field

[0001] The utility model relates to the technical field of underground self-rescue equipment, in particular to an isolated composite oxygen self-rescuer. Background Technique

[0002] At present, some breathing self-rescuers on the market have problems of slow opening and complex operation due to design problems. There are mainly two types of breathing self-rescuers: isolated chemical oxygen self-rescuers and isolated compressed oxygen self-rescuers.

[0003] The isolated chemical oxygen self-rescuer generates oxygen by the reaction of potassium superoxide oxygen generator with carbon dioxide. However, in the early stage of use, due to the small amount of carbon dioxide, the oxygen generation reaction is slow, the oxygen concentration is low, and the generated oxygen cannot meet the breathing needs of people. An oxygen generation starter needs to be added to promote the oxygen generation reaction. After adding the oxygen generation starter, there are problems of large volume, heavy weight, and occupying the internal space of the self-rescuer. Moreover, when the potassium superoxide oxygen generator reacts with carbon dioxide to generate oxygen, a large amount of heat energy is also released, resulting in a high temperature of the generated oxygen. When people breathe, there is a burning sensation in the throat, which causes harm to the body.

[0004] The isolated compressed oxygen self-rescuer mainly adsorbs carbon dioxide by calcium hydroxide. A large amount of calcium hydroxide adsorbent needs to be added in the self-rescuer to meet the demand for adsorbing carbon dioxide within the rated protection time. Moreover, in order to increase the oxygen supply, the oxygen cylinder needs to be made very large and a large amount of oxygen needs to be filled, resulting in problems of large volume and heavy weight.

[0005] How to design an isolated composite oxygen self-rescuer with a shell that is convenient to open, continuously and stably supplies oxygen, effectively reduces the harm of the oxygen supply temperature to the human body, is small in volume and light in weight is a technical problem that needs to be solved in the prior art. Content of the Utility Model

[0006] In order to solve the technical problems existing in the existing underground breathing self-rescuers, such as the shell is not convenient to open, the oxygen valve group is cumbersome to open, the concentration of the chemical oxygen self-rescuer is low in the early stage, the high temperature of the oxygen causes harm to the human body, and a large amount of calcium hydroxide and a large oxygen capacity are filled in the compressed oxygen self-rescuer, resulting in heavy weight, etc., the utility model provides an isolated composite oxygen self-rescuer, which realizes the purposes of convenient opening of the shell, convenient opening of the oxygen valve group, continuous and stable oxygen supply, effectively reducing the harm of the oxygen supply temperature to the human body, small in volume and light in weight.

[0007] The technical solution adopted by the present utility model to solve the above technical problems is: an isolated composite oxygen self-rescuer, which includes a lower housing, an upper cover, an opening mechanism and a composite oxygen self-rescue mechanism. The composite oxygen self-rescue mechanism is arranged in the inner cavity of the lower housing, the upper cover is arranged at the upper end of the lower housing, buckles are arranged at the front and rear ends of the lower housing, and the opening mechanism is clamped on the buckles to fix the upper cover and the lower housing together; the self-rescue mechanism includes a compressed oxygen cylinder, a control valve group, a dial, a pressure gauge, a pressure compensation plate, a carbon dioxide adsorption chamber, an oxygen mask, an exhalation tube, an upper filter screen, a breathable bottom plate, a threaded plug, and a guide tube. The compressed oxygen cylinder is arranged at the bottom of the inner cavity of the lower housing, the control valve group is arranged at the upper end of the compressed oxygen cylinder, the dial is located on one side of the top of the compressed oxygen cylinder, the pressure gauge is located directly in front of the control valve group, the pressure compensation plate is arranged on the same side as the control valve group, the carbon dioxide adsorption chamber is arranged in parallel with the compressed oxygen cylinder at the bottom of the inner cavity of the lower housing, and a carbon dioxide adsorbent and an inlet pipe are arranged in the carbon dioxide adsorption chamber. The inlet pipe is connected to the outlet pipe inside the oxygen mask to adsorb the carbon dioxide exhaled in the oxygen mask through the outlet pipe and the inlet pipe into the carbon dioxide adsorption chamber and reduce part of the oxygen, which enters the oxygen mask through the return pipe; the upper filter screen is arranged in the upper part of the inner cavity of the lower housing, the breathable bottom plate is arranged in the lower part of the inner cavity of the lower housing, and there is a space left with the bottom of the lower housing to form an air flow channel for the exhaled carbon dioxide to pass through. The nozzle of the guide tube passes through the carbon dioxide adsorption chamber and extends below the breathable bottom plate; the threaded plug is fixed on the lower housing through a threaded hole preset at the bottom of the lower housing.

[0008] As a further optimized solution of the above isolated composite oxygen self-rescuer, the opening mechanism includes two fixed hooks, an opening buckle, a bandage and a pull wire in the front and rear. The fixed hook is a J-shaped structure, and the hook ends of the two fixed hooks are clamped on the buckles. The opening buckle is arranged above the fixed hook, and the front and rear ends of the bandage are respectively fixed on the upper end of the opening buckle and the fixed hook at the back; one end of the pull wire is fixed at the top inside the upper cover, and the other end is fixedly connected to the dial. When the upper cover is opened and the pull wire is pulled to drive the dial, the control valve group controls the opening of the compressed oxygen cylinder to release oxygen.

[0009] As a further optimized solution of the above isolated composite oxygen self-rescuer, the carbon dioxide adsorbent used is a potassium superoxide adsorbent.

[0010] Compared with the prior art, the beneficial effects of the present utility model are:

[0011] First, the present utility model includes a lower housing, an upper cover, an opening mechanism and a composite oxygen self-rescue mechanism. The composite oxygen self-rescue mechanism is arranged in the inner cavity of the lower housing, the upper cover is arranged at the upper end of the lower housing, buckles are arranged at the front and rear ends of the lower housing, and the opening mechanism is clamped on the buckle groove to fix the upper cover and the lower housing together.

[0012] Second, the housing is easy to open. The buckle and the bandage are designed with a one-key opening function. Just press the buckle once to easily open the self-rescuer.

[0013] Third, by adopting a reasonable matching and compound supply method of compressed oxygen and chemical oxygen, it solves the problems that the oxygen concentration is low in the initial stage of the reaction of the chemical oxygen self-rescuer and an oxygen generator starter needs to be added, and solves the problem that the temperature of chemical oxygen is high and causes harm to the human body.

[0014] Fourth, by adopting the method of adding potassium superoxide adsorbent in the compressed oxygen self-rescuer, the oxygen supply and rescue time of calcium hydroxide adsorbent of the same weight is effectively increased.

[0015] Fifth, by adopting the method of adding potassium superoxide adsorbent in the compressed oxygen self-rescuer, the filling amount of calcium hydroxide under the same adsorption capacity is effectively reduced, the equipment weight is reduced, and the ineffective labor of long-term load-bearing of employees is reduced.

[0016] Sixth, after the carbon dioxide is guided to the bottom of the self-rescuer, it spreads in the gas dispersion space and then returns to the adsorption cavity, reacts with the adsorbent, absorbs carbon dioxide, produces oxygen, increases the contact area of the adsorbent, improves the absorption rate, and further increases the rated protection time. Description of the Drawings

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the lower housing;

[0019] Figure 3 is a schematic diagram of the oxygen mask and the exhalation tube;

[0020] Figure 4 is a three-dimensional structural schematic diagram of the opening mechanism;

[0021] Figure 5 is a schematic diagram of the installation position of the opening mechanism;

[0022] Figure 6 is a schematic cross-sectional view of the composite oxygen self-rescue mechanism;

[0023] Figure 7 is a schematic diagram of the partial structure of the composite oxygen self-rescue mechanism;

[0024] Markings in the figure: 1. Lower housing, 101. Buckle, 2. Upper cover, 3. Opening mechanism, 301. Fixed hook, 302. Opening buckle, 303. Bandage, 304. Pull wire, 4. Composite oxygen self-rescue mechanism, 401. Compressed oxygen cylinder, 402. Control valve group, 403. Paddle, 404. Pressure gauge, 405. Air pressure compensation plate, 406. Carbon dioxide adsorption chamber, 407. Oxygen mask, 408. Exhalation tube, 409. Upper filter screen, 410. Ventilated bottom plate, 411. Threaded plug, 412. Air duct, 5. Return air duct. Specific embodiments

[0025] The following further elaborates on the specific embodiments of the present utility model in conjunction with the accompanying drawings.

[0026] The isolated composite oxygen self-rescuer includes a lower housing 1, an upper cover 2, an opening mechanism 3, and a composite oxygen self-rescue mechanism 4. The composite oxygen self-rescue mechanism 4 is disposed in the inner cavity of the lower housing 1. The upper cover 2 is arranged at the upper end of the lower housing 1. Buckles 101 are provided at the front and rear ends of the lower housing 1. The opening mechanism 3 is clamped on the buckles 101 to fix the upper cover 2 and the lower housing 1 together. The self-rescue mechanism includes a compressed oxygen cylinder 401, a control valve group 402, a paddle 403, a pressure gauge 404, an air pressure compensation plate 405, a carbon dioxide adsorption chamber 406, an oxygen mask 407, an exhalation tube 408, an upper filter screen 409, a ventilated bottom plate 410, a threaded plug 411, and an air duct 412. The compressed oxygen cylinder 401 is disposed at the bottom of the inner cavity of the lower housing 1. The control valve group 402 is arranged at the upper end of the compressed oxygen cylinder 401. The paddle 403 is located on one side of the top of the compressed oxygen cylinder 401. The pressure gauge 404 is located directly in front of the control valve group 402. The air pressure compensation plate 405 is arranged on the same side as the control valve group 402. The carbon dioxide adsorption chamber 406 is arranged in parallel with the compressed oxygen cylinder 401 at the bottom of the inner cavity of the lower housing 1. And a carbon dioxide adsorbent and an intake pipe are provided in the carbon dioxide adsorption chamber 406. The intake pipe is connected to the outlet pipe inside the oxygen mask 407 to allow the carbon dioxide exhaled inside the oxygen mask 407 to enter the carbon dioxide adsorption chamber 406 through the outlet pipe and the intake pipe for adsorption and reduction of part of the oxygen, which then enters the oxygen mask 407 through the return air duct 5. The upper filter screen 409 is arranged in the upper part of the inner cavity of the lower housing 1. The ventilated bottom plate 410 is arranged in the lower part of the inner cavity of the lower housing 1 and has a space left with the bottom of the lower housing 1 to form an air flow channel for the exhaled carbon dioxide to pass through. The nozzle of the air duct 412 passes through the carbon dioxide adsorption chamber 406 and extends below the ventilated bottom plate 410. The threaded plug 411 is fixed to the lower housing 1 through a threaded hole preset at the bottom of the lower housing 1.

[0027] The opening mechanism 3 includes two fixed hooks 301 (front and rear), an opening buckle 302, a bandage 303, and a wire. The fixed hook 301 has a J-shaped structure, and the hook ends of the two fixed hooks 301 are clamped on the buckle 101. The opening buckle 302 is arranged above the fixed hook 301. The front and rear ends of the bandage 303 are respectively fixed to the upper end of the opening buckle 302 and the rear fixed hook 301. One end of the wire is fixed at the top inside the upper cover 2, and the other end is fixedly connected to the dial 403. When the upper cover 2 is opened and the wire is pulled to drive the dial 403, the control valve group 402 controls the opening of the compressed oxygen cylinder 401 to release oxygen.

[0028] The carbon dioxide adsorbent used is a potassium superoxide adsorbent.

[0029] The operation process of the present utility model is as follows:

[0030] Before use, first check whether the pointer of the pressure gauge 404 is within the normal range. Pass it through the belt hole and wear it on the user's belt, then fasten the belt around the waist to carry the self-rescuer with you. When a sudden situation occurs and the self-rescuer needs to be used, quickly unfasten the opening buckle 302, and the bandage 303 and the fixed hook 301 will immediately fall off automatically; remove the upper cover 2. The upper cover 2 is connected to the dial 403 through the wire 304. When the upper cover 2 is removed, the dial 403 will be pulled to open through the wire 304, and the control valve group 402 controls the opening of the compressed oxygen cylinder 401 to release oxygen; take out the oxygen mask 407 and quickly put the mask on the face, press the air replenishment plate 405, and the oxygen bag will be quickly filled with oxygen, and then start normal breathing and use.

[0031] The exhaled carbon dioxide is connected to the exhalation tube 408 through the air outlet tube built in the oxygen bag. The carbon dioxide enters the carbon dioxide adsorption chamber 406, where the carbon dioxide is adsorbed, and at the same time, part of the oxygen is restored and enters the oxygen bag, forming an isolation loop.

[0032] To avoid the problem that the air outlet hole is blocked and the exhalation is not smooth due to the direct insertion of the air guide tube into the carbon dioxide adsorbent 1, resulting in water vapor generated after the reaction between the adsorbent and carbon dioxide, the invention uses the air guide tube to pass through the adsorbent and insert it into the bottom of the lower shell 3. The bottom of the lower shell is equipped with a breathable bottom plate 4, and there is an air flow channel under the bottom plate. The carbon dioxide exhaled by people directly enters the bottom air flow channel through the air guide tube 5, and then enters the carbon dioxide adsorbent through the breathable bottom plate 4, which can greatly increase the contact area between carbon dioxide and the adsorbent, improve the absorption rate, and thus increase the rated protection time.

[0033] The housing of the present utility model is convenient to open, the oxygen valve group is convenient to open, and it can supply oxygen continuously and stably, effectively reducing the harm to the human body caused by the oxygen supply temperature. It is small in size and light in weight, solving the technical problems existing in the existing underground breathing self-rescuers, such as the housing is inconvenient to open, the oxygen valve group is cumbersome to open, the concentration of the chemical oxygen self-rescuer is low in the early stage, the high oxygen temperature causes harm to the human body, and the compressed oxygen self-rescuer is filled with a large amount of calcium hydroxide and has a large oxygen capacity and heavy weight. For the existing technology, it has good market prospects and development space.

[0034] The specific preferred embodiments and examples of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments and examples, and various changes can be made without departing from the concept of the present utility model within the scope of knowledge possessed by those skilled in the art.

Claims

1. Isolated composite oxygen self-rescuer, characterized in that: It includes a lower housing (1), an upper cover (2), an opening mechanism (3) and a composite oxygen self-rescue mechanism (4). The composite oxygen self-rescue mechanism (4) is arranged in the inner cavity of the lower housing (1), the upper cover (2) is arranged at the upper end of the lower housing (1), buckles (101) are arranged at the front and rear ends of the lower housing (1), and the opening mechanism (3) is clamped on the buckles (101) to fix the upper cover (2) and the lower housing (1) together; the self-rescue mechanism includes a compressed oxygen cylinder (401), a control valve group (402), a dial (403), a pressure gauge (404), a pressure compensation plate (405), a carbon dioxide adsorption chamber (406), an oxygen mask (407), an exhalation tube (408), an upper filter screen (409), a breathable bottom plate (410), a threaded plug (411), a conduit (412). The compressed oxygen cylinder (401) is arranged at the bottom of the inner cavity of the lower housing (1), the control valve group (402) is arranged at the upper end of the compressed oxygen cylinder (401), the dial (403) is located on one side of the top of the compressed oxygen cylinder (401), the pressure gauge (404) is located directly in front of the control valve group (402), the pressure compensation plate (405) is arranged on the same side as the control valve group (402), the carbon dioxide adsorption chamber (406) is arranged in parallel with the compressed oxygen cylinder (401) at the bottom of the inner cavity of the lower housing (1), and a carbon dioxide adsorbent and an intake pipe are arranged in the carbon dioxide adsorption chamber (406). The intake pipe is connected to the outlet pipe inside the oxygen mask (407) so that the carbon dioxide exhaled in the oxygen mask (407) enters the carbon dioxide adsorption chamber (406) through the outlet pipe and the intake pipe for adsorption and partial oxygen reduction, and then enters the oxygen mask (407) through the return pipe (5); the upper filter screen (409) is arranged in the upper part of the inner cavity of the lower housing (1), the breathable bottom plate (410) is arranged in the lower part of the inner cavity of the lower housing (1), and there is a space left from the bottom of the lower housing (1) to form an air flow channel for the exhaled carbon dioxide to pass through. The pipe orifice of the conduit (412) passes through the carbon dioxide adsorption chamber (406) and extends below the breathable bottom plate (410); the threaded plug (411) is fixed on the lower housing (1) through a threaded hole preset at the bottom of the lower housing (1).

2. The isolated composite oxygen self-rescuer according to claim 1, characterized in that: The opening mechanism (3) includes two front and rear fixed hooks (301), an opening buckle (302), a bandage (303), and a pull wire. The fixed hooks (301) are J-shaped structures, and the hook ends of the two fixed hooks (301) are clamped on the buckles (101). The opening buckle (302) is arranged above the fixed hooks (301), and the front and rear ends of the bandage (303) are respectively fixed to the upper end of the opening buckle (302) and the rear fixed hook (301); one end of the pull wire is fixed at the top inside the upper cover (2), and the other end is fixedly connected to the dial (403). When the upper cover (2) is opened and the pull wire is pulled to drive the dial (403), the control valve group (402) controls the compressed oxygen cylinder (401) to start discharging oxygen.

3. The isolated composite oxygen self-rescuer according to claim 2, characterized in that: The carbon dioxide adsorbent used is a potassium superoxide adsorbent.

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