Mining foam generator for preventing and extinguishing fire

Abstract

The invention discloses a mining foam generator for preventing and extinguishing fire. The foam generator is characterized in that a Venturi tube is (2) is arranged in a foaming cylinder (1), a liquid pipeline (4) penetrates the wall of the foaming cylinder to extend into the Venturi tube, an atomizing nozzle (3) is arranged at the throat of the Venturi tube and connected to the extending end of the liquid pipeline, the other end of the liquid pipeline is connected with a foaming agent container (6), a pump (5) is mounted on the liquid pipeline, a gas nozzle (10) is arranged at the rear of the atomizing nozzle and connected with an air compressor (7) through a gas inlet pipeline (9), a first foaming screen (11) is disposed at the front end of the Venturi tube, an impeller (13) is disposed in front of the first foaming screen and rotationally connected with an impeller support (14) which is fixedly connected with the wall of the foaming cylinder, and a second foaming screen (12) is fixed at the front end of the impeller support. The mining foam generator is small in size, simple in structure and high in foaming efficiency, the generated foam is fine, even and high in stability, and fire extinguishing effect is increased.

Description

technical field [0001] The invention relates to a foam generating device, in particular to a mine-used fire-fighting foam generator. Background technique [0002] At present, the foamer used to prepare two-phase foam is the most widely used mesh foamer, which is widely used in fire protection, petroleum and other industries. This type of network foamer is mainly composed of fan, foaming network, nozzle, pressure pump, proportional mixer and liquid supply pipe. Its working principle is: water and foaming agent pass through the proportional mixer, and are transported to the nozzle of the foam generator through the pressure pump, and the aqueous solution of the foaming agent is evenly sprayed on the foaming net, with the fan as the air source, under the action of high-pressure airflow , It can continuously generate high-expansion foam in large quantities. This kind of mesh foamer uses a single foaming net, so the foam is generated at one time. Because it is formed at one time...

AI Technical Summary

Problems solved by technology

This kind of mesh foamer uses a single foaming net, so the foam is generated at one time. Because it is formed at one time, the foam produced will be of different sizes and very uneven. When extinguishing the fire, the fire extinguishing effect of the used area is quite different. ; In addition, the foam produced by the existing mesh foamer has a large water content and a short liquid analysis time, which leads to poor stability of the foam, thereby affecting the fire extinguishing effect; and this foamer has a large volume and a complex structure

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