Air-foam fire extinguisher

Abstract

The invention discloses an air-foam fire extinguisher, comprising a double-head external connector (2), a liquid outlet control valve (3), a double-head joint (4), a collector (5), a liquid sucking chamber (6), a distributing baffle (7), a copper sleeve (8), a nozzle (9) and a foaming cylinder (11). A screen mesh (114) is fixed on the part of the circular cylinder (111) of foaming cylinder with a maximum inner diameter; the inner part of the nozzle (9) takes a shape of funnel, the outlet thereof faces the foaming cylinder (11) and the inlet thereof is embedded in the liquid sucking chamber (6) matching with the copper sleeve (8) and the distributing baffle (7); and the inner aperture shape of the cooper sleeve (8) is matched with the shape of the top of the distributing baffle. The outside of the liquid sucking chamber (6) is provided with a circular hole communicated with the inner part of the liquid sucking chamber. The fire extinguisher increases the flow rate greatly, the sprayed foam can reach father distance than the existing air foam nozzle, and the generated foam has better flame retardance with higher fire extinguishing efficiency. The fire extinguisher can further reduce injury and death of people and property loss, minimize the harm to fire personnel.

Description

technical field [0001] The invention relates to a portable fire extinguisher, in particular to an improvement in the structure of a backpack type air foam fire extinguisher. Background technique [0002] One of the methods for extinguishing fires in underground tunnels, coal mines, airports, underground oil depots, garages, ships, warships and limited spaces is to use an air foam fire extinguisher. The foam sprayed by this fire extinguishing tool is suitable for covering a large area of ​​water-insoluble flammable and combustible liquid. The so-called air foam fire extinguisher is a foam fire extinguishing agent mixed with water and air to produce foam, which covers the surface of the burning non-water-soluble flammable, combustible and dispersible liquid, so that it is isolated from the air containing oxygen that can support combustion, thus To extinguish the burning of non-water-miscible flammable, combustible and dispersible liquids. Said foam fire extinguishing agent h...

AI Technical Summary

Problems solved by technology

The so-called air foam gun does not spray far enough when in use. At the fire scene, due to the high temperature, it is difficult for firefighters to approach the scene that should be approached, which affects the efficiency of fire extinguishing. the scene, causing greater casualties and property damage, as well as damage to the firefighters themselves

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