A mine compressed oxygen self-rescuer

Abstract

A compressed oxygen self-rescuer for mines is used for mine personnel to escape and self-rescue. It solves the problems that the mouth of the detergent tank is easily damaged when it is set at the bottom of the lower shell, the mouthpiece is not firmly contained in the mouth, and the volume of the breathing valve is large. The detergent inlet, the exhalation hose interface and the air bag interface are all on the same port, the mouthpiece base cover is sleeved with the breathing valve, the upper end of the base is provided with a mouthpiece neck, the upper end of the mouthpiece neck is provided with a U-shaped stopper, and the U-shaped stopper There are multiple pairs of tooth pads on the inner side of the piece, and the upper and lower teeth are occluded. The inner end of the tooth pad is provided with an internal stop. The end faces of the inhalation valve and the exhalation valve of the breathing valve are interlaced and not completely overlapped. The interlaced surfaces are closed and do not communicate with each other. The valve is embedded in the exhalation valve and connected tangentially to the inner wall of the exhalation valve. The end face of the shell of the exhalation valve is higher than the end face of the inhalation valve. The exhalation valve is connected tangentially to the end face of the shell of the exhalation valve. It communicates with the exhalation valve, and the end face space of the exhalation valve forms an inhalation channel and communicates with the inhalation valve.

Description

technical field [0001] The invention belongs to an escape self-rescuer for operators in dangerous environments, and in particular relates to a compressed oxygen self-rescuer for mines. It is mainly used for coal and gas outbursts, gas explosions, coal dust explosions, fires and other accidents in coal mines, or in other toxic and harmful gas environments, for personnel to escape and save themselves. Background technique [0002] Currently known mine self-rescuers can be divided into filter type self-rescuers, chemical oxygen self-rescuers and compressed oxygen self-rescuers according to their principles and purposes. Among them, the mine compressed oxygen self-rescuer is an oxygen self-rescue device with an isolated closed-circuit breathing and circulatory system that pre-fills oxygen into the oxygen bottle through the filling pump, which overcomes the filter-type self-rescuer that cannot be used in severe hypoxia and anaerobic environments. problem of use. It also overcom...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the mouth of the existing compressed oxygen self-rescuer filled with cleaning agent is arranged at the bottom of the lower casing, which may easily cause the cover to be damaged or leak due to external force, and the mouthpiece of the mouthpiece set The sheet is not made according to the shape of the U-shaped gap between the inside of the lips and the outside of the teeth. The tooth pads on both sides of the block can only allow the upper and lower pairs of teeth on both sides of the mouth to bite. The damage of the teeth in the position seriously affects the reliability of the mouthpiece contained in the mouth, and the relatively large volume of the exhalation valve combined in parallel on a plane, a new design of a mine-used compressed oxygen self-rescuer

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