Wind brush combined type fire hydrant

Abstract

A wind brush combined fire extinguishing head for extinguishing the fire accident in forest is composed of a motor driven axial-flow blower and a fire-extinguishing brush, which are integrated. Its advantages are high effect, simple structure and self-cooling function.

Description

Technical field: [0001] The invention relates to a wind brush combined fire extinguishing head, which is a component of a forest fire prevention and fire extinguishing machine. Background technique: [0002] Existing wind power sweeping type fire extinguisher (patent number: 92245918.5), fire extinguishing head is wind brush combined type, wind part and brush part are coaxial split structure, and rotating speed is different. The air part is a suction axial flow fan, which just sucks the tiny fire particles from the fire into the air duct, and extinguishes them through friction and stirring. The brush part is a ball table-shaped simple elastic steel wire brush, that is, except one end of the brush palm is fixed on the brush holder, the working part is in an unconstrained cantilever and free state. Wind fire extinguishing also has a common wind fire extinguisher that adopts a high-position centrifugal fan. [0003] The problems existing in the prior art are: 1. Firstly, the ...

AI Technical Summary

Problems solved by technology

[0003] The problems existing in the prior art are: 1. Firstly, the unconstrained cantilever and free-state brush palm part will be quickly dispersed into single brush filaments during work, and the deformation and force characteristics of the brush palm finished body will be lost. The wire is working in an overloaded state, and quickly breaks from the root of the fixed end; secondly, the ability of the scattered brush palms to stir and rub, remove combustibles and burning materials is reduced, and the fire extinguishing effect is reduced

To ensure a certain fire extinguishing effect, it is necessary to increase the downforce, which increases the number of overloaded brush filaments. In such a vicious circle, the fire extinguishing brush will soon be scrapped

2. Suction wind brush combination fire extinguishing head, the fire extinguishing head and the parts that directly drive it are under the grilling of the flame, the strength and elasticity of the material are reduced, and the life is shortened, especially the parts with lubricating oil are burned and exploded. Danger

3. The suction fire extinguishing method only sucks the tiny fire particles into the air duct, which is not very helpful for fire extinguishing

4. Especially for portable fire extinguishers, the air duct should not be too long, otherwise the wind energy loss will be too great, so the inhaled fire particles may fly out of the air duct without being extinguished, and fall outside the unburned fire site, forming new Fire source, causing new hidden dangers

5. The air duct of the suction fire extinguishing head is easy to be blocked

Because there are many and various combustibles in the fire scene, it is very troublesome and time-consuming to clean up after the blockage. It is not like the applicant said that it can be removed by properly lifting the fan. If it is light, it will increase the wind loss or have to shut down frequently for cleaning. Cleaning is not easy. in time and sometimes may even damage the fan

7. The coaxial fan and the sweeping head are separated with different speeds, the structure is complex and the lubrication is difficult

8. The air outlet of ordinary wind-powered fire extinguishers is too far away from the ground (fire source) to make full use of wind energy

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