Coal mine down-hole foam dedusting system

Abstract

The invention relates to a foam dust removal system used for coal mine underground mining, mainly comprising a fixed quantity addition pump, a foaming agent reservoir, a compressed air pipeline, a clean water pipeline, a foam generator, a foam spray head and so on. By utilization of the prior water pipe in a dust removal place, foaming agents are added into the water pipe by the small-flow fixed quantity addition pump; mixed liquid and compressed air which contain the foaming agents pass through the foam generator simultaneously, and a great amount of foams are generated, conveyed to the foam spray head through a hose, ejected from the foam spray head in the form of an umbrella and cover dust producing points. The invention is particularly suitable for the coal mine underground mining work surface, traveling belt transfer points, a tunnel excavated section or other dust producing points with small space and effectively controls the dust producing sources. The foam dust removal system used has the advantages of simple structure, convenient operation, capability of operating continuously, high dust removal efficiency, no electric elements and safety and reliability.

Description

technical field [0001] The invention relates to a foam dust removal system used in underground coal mines, and is especially suitable for controlling dust disasters in places with narrow spaces such as underground mining working faces. Background technique [0002] In the process of coal mining, a large amount of dust will be produced, and the mining operation is the main process of dust production. The dust production accounts for more than 80% of the total dust, which seriously endangers the physical and mental health of coal miners. At present, there are about 260,000 pneumoconiosis patients in my country's coal mining industry, and the number is increasing at a rate of 5,000 per year. About 3,000 people die of pneumoconiosis every year, which has brought great pain to patients and their families. In order to prevent dust, spray dust removal and coal seam water injection are commonly used underground in coal mines, but they cannot prevent dust disasters well because of lo...

AI Technical Summary

Problems solved by technology

Patent No. CN87106798A discloses a rock-drilling foam dust collector, which is mainly composed of a foam premix liquid storage tank, compressed air pipeline and foam injector. It cannot work continuously and has a large volume. The foam net inside the foam ejector adopts a planar structure, which is not conducive to the formation of foam liquid film, and the foaming effect is not good. It is not suitable for continuous operation and dust removal on the mining face, and its application range is small.

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