Oxygen supplementation filter type self-rescuer

Abstract

The invention discloses an oxygen supplementation filter type self-rescuer and relates to the technical field of mine self-rescue and escape. The oxygen supplementation filter type self-rescuer comprises a compressed oxygen cylinder, a filter medicine tank, a mouth device and an exhalation valve. When wearing the oxygen supplementation filter type self-rescuer, a user turns on a regulation switchof the compressed oxygen cylinder to release part of pure oxygen into the rescuer to be mixed with external air for human breathing. Meanwhile, the oxygen supplementation filter type self-rescuer is provided with a hopcalite agent and a drying agent. Carbon monoxide contained in the air is oxidized into carbon dioxide under the catalytic action of the hopcalite agent to ensure that the oxygen concentration of the air inhaled by the user is greater than 20%, the concentration of carbon monoxide inhaled by a human body within the specified protective time is lower than 200*10<-6> and the carbonmonoxide inhaled within the specified time in total is less than 200 ml. During exhaling, the exhaled gas is discharged from the exhalation valve. The oxygen supplementation filter type self-rescuer is designed by combining a compressed oxygen self-rescuer and a filter self-rescuer and is simple in structure, small in size and convenient to use.

Description

technical field [0001] The invention relates to the technical field of underground safe self-rescue and escape in mines, in particular to a filter-type self-rescuer with the function of supplementing oxygen. Background technique [0002] As we all know, coal mine self-rescuers have been widely used and promoted in domestic coal mines. The types of self-rescuers mainly include: filter self-rescuers and isolated self-rescuers. The characteristic of the filter self-rescuer is that the oxygen needed for human breathing comes from the outside air, and the poisonous gas is filtered out through the hopcalate agent inside the self-rescuer. The product has the advantages of small size, light weight, low cost, and long personal protection time. The disadvantage is that it requires The oxygen concentration in the ambient air is greater than 18%, and the carbon monoxide concentration must not be higher than 1.5%. Restricted by this condition, China terminated the use of filter self-resc...

AI Technical Summary

Problems solved by technology

The characteristic of the filter self-rescuer is that the oxygen needed for human breathing comes from the outside air, and the poisonous gas is filtered out through the hopcalate agent inside the self-rescuer. The advantages of the product are small size, light weight, low cost, and long personal protection time. The disadvantage is that it requires The oxygen concentration in the external ambient air is greater than 18%, and the carbon monoxide concentration must not be higher than 1.5%. Restricted by this condition, China terminated the use of filter self-rescuers in 2010; the characteristic of isolated self-rescuers is that the oxygen for human breathing does not need Provided by the outside world, the self-rescuer itself provides oxygen, including isolated chemical oxygen self-rescuer and isolated compressed oxygen self-rescuer. The working principle of the isolated chemical oxygen self-rescuer is that a chemical oxygen agent is installed inside to utilize The moisture in the water reacts with the oxygen generating agent to release oxygen for human breathing; the working principle of the isolated compressed oxygen self-rescuer is to equip a high-pressure oxygen tank, turn on the switch of the oxygen tank when in use, and release oxygen according to the specified amount for human breathing; the isolated compressed oxygen self-rescuer The advantage of the self-rescuer is that it is not affected by the external ambient air. The disadvantage is that it needs to be equipped with an airbag for people to breathe and a medicament for treating carbon dioxide, resulting in a large physical examination, heavy weight, inconvenient use for miners, and short protection time.

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