Mine dust grading combined dust fall method and device

Abstract

The invention discloses a mine dust grading combined dust fall device. A primary dust fall system is formed by an inner spraying device and an outer spraying device which are arranged in a coal cutter or a heading machine. The mine dust grading combined dust fall device comprises a secondary haze transform system formed by an ultrasonic wave dry haze generator and a tertiary drizzle wall haze fall system formed by a drizzle generating device. By means of the mine dust grading combined dust fall method and device, conventional instantaneous point dust fall is changed into segmental process dust fall, mine dust different size fraction can be inhibited and reduced by forming water mist particles or gas water mist particles different in particle diameter, and particle diameter grading, segmental inhibition and reduction and process transformation of mine dust in wind current of mining ports are achieved. The mine dust grading combined dust fall device can move along with pushing of the mining points and has functions of automatic control and rain stopping when people go out, dust fall efficiency is high, and dust inhibition, dust fall, explosion protection, fire protection, temperature reduction and drag reduction of return current are achieved by humidifying dirty wind. Compared with the conventional dust fall method, dust fall effect is obvious.

Description

technical field [0001] The present invention relates to a method for reducing dust in mine excavation working face, in particular to a method for reducing dust by classification and combination of mine dust. Background technique [0002] Mine mining face ventilation and sprinkler dust reduction is the key technology and important process to purify the air, protect the occupational health of workers, improve the equipment use environment, and reduce wind resistance. Currently, the commonly used dust suppression methods and devices include dry dust suppression and wet dust suppression systems. and wet dust suppression, all of which are arranged near the dust source on the working face. In order to meet the requirements of rapid mining advancement, the amount of sprayed water is large and the dust reduction time is short, which will interfere with the main production process, especially for the reduction of exhaled dust particles below 10 μm. The effect is not good, often resul...

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Problems solved by technology

[0002] Mine mining face ventilation and sprinkler dust reduction is the key technology and important process to purify the air, protect the occupational health of workers, improve the equipment use environment, and reduce wind resistance. Currently, the commonly used dust suppression methods and devices include dry dust suppression and wet dust suppression systems. Ventilation and dust removal and wet dust suppression are mainly arranged near the dust source point on the working face. In order to meet the requirements of rapid mining advancement, the amount of sprayed water is large and the dust suppression time is short, which interferes with the main production process, especially for the reduction of exhaled dust particles below 10 μm. The effect is not good, often resulting in excessive exhaled dust content in the dirty air flow, many dust particles in the return air shaft and large wind resistance, low fan efficiency, and dirty air in the air shaft industrial square

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