Apparatus for generating solidified foam fluid for coal mine fire preventing and extinguishing

Abstract

A disclosed apparatus for generating solidified foam fluid for coal mine fire preventing and extinguishing comprises an integrated main engine, an automatic adding liquid storage tank, a slurry stirring system, an injection gun and a corresponding pipeline connection system; corresponding valves, three-way valves, compression gauges and flow meters are arranged in a pipeline; the integrated main engine has a double-rack structure, the lower layer of the rack is provided with an air compressor, an intelligent control panel and a screw pump; and the upper layer of the rack is provided with a foaming pipe and a mixing pipe. Solidified foam fluid generated by the apparatus is uniform and fine in foams, high in foaming ratio and good in foam stability; and the apparatus is maturated in function, smooth in slurry circulation, simple in operation and reliable in usage, can be well adapted to coal mine on-site severe environment, can rapidly continuously generate the solidified foam fluid, is application to coal mine on-site leak-stopping oxygen-isolation fire preventing and extinguishing, and helps to effectively guarantee the safety and efficiency of coal mine fire preventing and extinguishing.

Description

technical field [0001] The invention relates to a generating device for fire prevention and extinguishing materials in coal mines, in particular to a solidified foam fluid generating device for fire prevention and extinguishing in coal mines, belonging to the technical field of fire prevention and extinguishing in coal mines. Background technique [0002] Spontaneous coal combustion is one of the most important disasters faced by my country's coal mine safety production, which seriously threatens the safety of underground workers and the normal mining of the working face, and will also cause major economic losses. Foam fluid is a kind of plugging, oxygen barrier and fire prevention material with good prospects, but there is no mature production device for the preparation of this kind of material. Most coal mine sites use foaming agent, foam stabilizer, and coagulation agent to add cement (Yellow mud, fly ash) slurry, the general mixing tank and grouting pump are used for pre...

AI Technical Summary

Problems solved by technology

[0002] Coal spontaneous combustion is one of the most important disasters faced by my country's coal mine safety production, which seriously threatens the safety of underground workers and the normal mining of the working face, and will also cause major economic losses

Foam fluid is a kind of plugging, oxygen barrier and fire prevention material with good prospects, but there is no mature production device for the preparation of this kind of material. Most coal mine sites use foaming agent, foam stabilizer, and coagulation agent to add cement (Yellow mud, fly ash) slurry, the general mixing tank and grouting pump are used for pressure injection, and the foaming quality and foam stabilization quality are not ideal

Such as: the Chinese patent with the publication number CN2721877 discloses a mobile solidified foam filling device for mines, which can realize the pressure injection of commonly used coal mine fire-fighting materials such as gel, foam, and mud, but its foaming and mixing process It is not ideal enough, and the device is complicated, and the foaming ratio of the solidified foam fluid produced is not high; the Chinese patent with the publication number of CN1417451 discloses a three-phase foam generating device for preventing spontaneous combustion of coal, which uses a barrier plate, a Venturi tube, a jet Regulators, impellers and other structures can produce high foaming rate, stable and delicate three-phase foam, but the principle is to integrate the core processes of foaming and mixing foam fluids into one, and the foaming agent and slurry are in the process of grouting After mixing in the pipeline, it flows through the foaming device, so that the foaming ability of the foaming agent is limited to a certain extent. At the same time, because the water-cement ratio and viscosity of the three-phase foam material are much lower than that of the solidified foam fluid material, the device Ineffective foaming of cured foam fluids

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