Safe and handheld type fire extinguisher

Abstract

The invention discloses a safe and handheld type fire extinguisher. When a spraying opening of a front cover is blocked by a dry powder extinguishing agent in a barrel body, consequently the dry powder extinguishing agent cannot be smoothly sprayed out, and enormous pressure is continuously generated in the barrel body; when the pressure exceeds a threshold value, the front cover is pushed out ofthe barrel body through the dry powder extinguishing agent, an explosive decompression ring is pulled to slide on the outer wall of the barrel body and is clamped and fixed to the end of the barrel body through a first limiting device and a second limiting device, and the condition that the front cover shoots off and accidentally injures others is avoided; meanwhile, the pressure inside the barrelbody is released, the dry powder extinguishing agent sequentially passes through an explosive decompression through hole, a dry powder guide cover and a guide opening to jet in the direction of the front cover, the dry powder extinguishing agent obtained after explosive decompression or pressure decompression is irregularly jetted or vertically jetted, and the fire extinguisher obtained after explosive decompression can be guided to the fire catching direction to achieve fire extinguishing operation; and by means of the above design, the safety of a fire extinguisher explosive decompression device is improved, resources are better saved, and the dry powder extinguishing agent is sufficiently used.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a safe hand-held fire extinguisher. Background technique [0002] Existing hand-held fire extinguishers are widely used, and although their structure is relatively small, there is a relatively large potential safety hazard. For example, when the powder column in the cylinder deflagrates or the nozzle is blocked, the fire extinguishing agent will accumulate rapidly in the cylinder, and the pressure in the cylinder will rise sharply, so the heat energy is converted into huge kinetic energy, which acts on the cylinder, and part of it along the The direction of the spout pushes the front cover forward, and at the same time, another part acts on the barrel to generate a recoil force in the opposite direction, which will cause serious personal injury to the operator. It will also cause accidental injury to people or things around after breaking away from the cylinder. [0003...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of potential safety hazards and waste of resources in the explosion venting device in the prior art, the technical solution of the present invention is as follows:

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