Portable constant pressure water mist-gas dual-purpose fire extinguisher

Abstract

The invention discloses a portable constant-pressure fine water mist-gas dual-purpose fire extinguisher which comprises a gas storage bottle and a liquid storage bottle. A bottle opening of the liquid storage bottle is connected with a fine water mist spray gun through a pressure hose. A start valve is arranged at a bottle opening of the gas storage bottle. A pressure reducer and a constant-pressure output valve which communicate with each other are arranged at an outlet of the start valve. An outlet of the constant-pressure output valve enables the bottle opening of the gas storage bottle to communicate with the bottle opening of the liquid storage bottle through a gas output pipeline. A gas nozzle and a gas-liquid conversion valve are arranged on the gas output pipeline. By means of switching of the gas-liquid conversion valve, after high-pressure gas in the gas storage bottle is reduced to constant pressure through the pressure reducer and the constant-pressure output valve, gas can be selectively sprayed out through the gas nozzle for fire extinguishment, or a fire extinguishment agent in the liquid storage bottle is output through pressure of an internally-arranged siphon and is sprayed out through the fine water mist spray gun in a constant-pressure atomization manner for fire extinguishment. The portable constant-pressure fine water mist-gas dual-purpose fire extinguisher has the beneficial effects of being simple in structure, high in fire extinguishment efficiency, good and stable in electrification safety, comprehensive in fire extinguishment type and the like.

Description

technical field [0001] The invention relates to a portable fire extinguisher, in particular to a fire extinguisher capable of outputting fine water mist at a constant pressure and capable of switching between fine water mist and gas fire extinguishing. Background technique [0002] Portable fire extinguishers commonly used today include dry powder fire extinguishers, foam fire extinguishers and carbon dioxide fire extinguishers. Among them, the dry powder fire extinguisher is filled with inorganic salt dry powder fire extinguishing agents. The fire extinguishing principle includes the physical principle of isolating oxygen and suffocating flames, and the chemical principle of inhibiting combustion reaction free radicals and active groups to interrupt the burning flame. The foam fire extinguisher is filled with foam-type fire extinguishing agent, which is sprayed out by the pressure of the foam nozzle to produce a large amount of foam, which covers the surface of the burning ...

AI Technical Summary

Problems solved by technology

However, this structural design has high requirements on the quality of the fire extinguishing agent capsule. Once there is a slight damage, the entire fire extinguisher will lose its effectiveness

Simultaneously, the assembly of this fire extinguisher is more complicated, dismounting is inconvenient, and structure is not compact

Moreover, this design can only achieve a single water mist fire extinguishing function, and cannot realize the gas fire extinguishing function

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