Handheld foam fire gun and application thereof

Abstract

The invention relates to a handheld foam fire gun and application thereof. The handheld foam fire gun comprises a foam adjusting section, a gas-liquid mixing section and a foaming pipe which are sequentially connected and mutually communicated, the foam adjusting section is provided with a first handle, the first handle is provided with a foam conveying pipe and an adjusting valve, the gas-liquid mixing section is provided with a water inlet pipeline and a flow dividing water pipe which are mutually communicated, and the water inlet pipeline is provided with a water valve and a pressure gauge. The water inlet pipeline is communicated with the gas-liquid mixing section, water is conveyed into the foaming pipe through the gas-liquid mixing section, the flow dividing water pipe and the foam conveying pipe are both connected with a Venturi pipe located in the foam adjusting section, and the Venturi pipe is provided with a mixed liquid pipe extending into the gas-liquid mixing section. The handheld foam fire gun has the beneficial effects that a foam liquid conveying assembly and a water supply assembly which can be independently adjusted are arranged on the foam adjusting section, so that the foam proportion is adjusted, the foam expansion is greatly increased, the pressure loss is greatly reduced, the fire extinguishing performance is improved, and the handheld foam fire gun is convenient to use and high in practicability.

Description

technical field [0001] The invention relates to a fire-fighting facility, in particular to a hand-held foam fire extinguisher capable of effectively adjusting the mixing ratio of water volume and foam volume and its application. Background technique [0002] Foam gun is one of the commonly used convenient fire extinguishing equipment. Generally, a Venturi tube is embedded in the water flow channel, and the foam liquid is sucked in by negative pressure to mix with water, and then mixed with air after being sprayed out from the nozzle to generate foam for fire extinguishing. The foam gun cannot effectively control the mixing ratio of the water volume and the inhaled foam volume. The reason is that the pressure of the water fluctuates when the foam gun is used. The ratio changes greatly, and sometimes it becomes a positive pressure, and the water flows into the foam storage tank in reverse, and after the water passes through the Venturi tube, the fluid pressure loss is large, r...

AI Technical Summary

Problems solved by technology

[0002] Foam gun is one of the commonly used convenient fire extinguishing equipment. Generally, a Venturi tube is embedded in the water flow channel, and the foam liquid is sucked in by negative pressure to mix with water, and then mixed with air after being sprayed out from the nozzle to generate foam for fire extinguishing. The foam gun cannot effectively control the mixing ratio of the water volume and the inhaled foam volume. The reason is that the pressure of the water fluctuates when the foam gun is used. The ratio changes greatly, and sometimes it becomes a positive pressure, and the water flows into the foam storage tank in reverse, and after the water passes through the Venturi tube, the fluid pressure loss is large, resulting in a low foaming ratio, which is not convenient to use

Images