Negative-pressure dust extraction micro-mist purification method and system for fully-mechanized mining face with large mining height

Abstract

The invention relates to the technical field of coal mine dust removal, in particular to a negative-pressure dust extraction micro-mist purification system and method for a fully-mechanized mining face with a large mining height. The negative-pressure dust extraction micro-mist purification method for the fully-mechanized mining face with the large mining height comprises the steps that the fully-mechanized mining face with the large mining height is divided into a plurality of areas; a position with the highest dust concentration in each area is obtained; and a controller controls the directions of an air inlet and an air outlet of a wet-type filter dust separator, so that the air inlet of the wet-type filter dust separator is aligned with the area with the highest dust concentration on the air inlet side for performing dust extraction and purification, and long-range micro-mist flow formed by the air outlet of the wet-type filter dust separator is aligned with the area with the highest dust concentration on the air outlet side for performing dust sedimentation. According to the negative-pressure dust extraction micro-mist purification system and method for the fully-mechanized mining face with the large mining height, long-time suspended fine dust in the upper-part space of the fully-mechanized mining face with the large mining height can be efficiently treated, the problemsthat the treatment effect of original spray and dust sedimentation measures aiming at a whole section is poor, the visibility of a working face is reduced, and the air humidity is increased are solved, and the working environment of borehole operation personnel is greatly improved.

Description

technical field [0001] The invention relates to the technical field of dust removal in coal mines, in particular to a negative-pressure dust extraction and micro-mist purification method and system for fully mechanized mining faces with large mining heights. Background technique [0002] The fully mechanized mining face is one of the most important dust-producing areas in coal mines. A large amount of dust will be generated in such processes as shearer drum cutting coal, hydraulic support lowering columns and moving frames, and scraper conveyor coal transportation and reloading. Rapidly spread to the overall fully mechanized mining face. Especially in the fully mechanized mining face with a mining height of 6-8m, the rotating coal shearer drum has a strong coal breaking power, the broken coal body has a large caving height, the dust source position of the falling column is high, and the scraper conveyor transports a large amount of coal. , dust pollution is more serious. T...

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Problems solved by technology

[0004] The present invention aims at the current problem that the effect of comprehensive spraying and dust removal on the working face of the fully mechanized mining face with large mining height is poor, and it is easy to cause the visibility of the working face to decrease and the humidity to increase. Dust and mist purification method and system

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