Anti-suffocation safety helmet

Abstract

The invention relates to an anti-suffocation safety helmet. The anti-suffocation safety helmet comprises a shell, a mask, a breather valve, an oronasal mask, an air supply pipe and an air return pipe.The mask is provided with a stop block. The breather valve is fixed to the inner wall surface of the shell to allow airflow to flow from the air supply pipe to the oronasal mask during inhaling and from the oronasal mask to the return pipe during exhaling. The oronasal mask is connected to the breather valve through a short breath guide tube, and the oronasal mask is fixed to the face of a user through a binding band. A ventilation hole is formed in the oronasal mask. When a dangerous situation occurs, the mask is closed, the stop block on the mask completely shields the ventilation holes onthe oronasal mask, fresh air flows into the oronasal mask from an air source through the air supply pipe and the breather valve, and dirty air is discharged from the oronasal mask through the breathervalve and the air return pipe. The anti-suffocation safety helmet is simple and quick to operate, can well ensure the breathing safety and use comfort of the user, and is especially suitable for personal protection in an environment with collapse and burial risks.

Description

technical field [0001] The invention relates to the technical field of safety helmets, in particular to an anti-suffocation safety helmet. Background technique [0002] In production and living activities such as underground operations, tunnel construction, large granary operations, deep foundation pit construction, and climbing snow-capped mountains, personnel are faced with the danger of collapse of earth and rock structures. The mechanical suffocation caused by the burial of collapsed materials is one of the main causes of personal injury caused by collapse hazards. A person whose airway is completely blocked for more than a minute can cause cardiac arrest. Even if the airway is not completely blocked, suffocation may occur due to elevated carbon dioxide levels due to lack of adequate supplemental oxygen in the trapped space. Therefore, preventing suffocation is the primary task of personnel protection in collapse danger. [0003] At present, there is a lack of persona...

AI Technical Summary

Problems solved by technology

This scheme can prevent suffocation when the concentration of toxic and harmful gases such as carbon dioxide and gas in the ambient air is high, but the anti-suffocation ability is weak in the case of collapse, and it is difficult to ensure the anti-suffocation effect

Moreover, this mining self-rescuer has many steps to operate, such as loosening the sealing tape, removing the upper casing, and clamping the nose with a nose clip set. The operation time is long, and personnel need to be trained to master the use skills. These shortcomings often lead to Mine self-rescuer cannot protect personnel in time

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