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Comprehensive treatment method of dust produced during coal cutting against wind by coal cutter in fully-mechanized coal mining working face

A technology of fully mechanized mining face and comprehensive treatment, applied in the fields of dust prevention, mining equipment, earthwork drilling, etc., can solve the problem of low dust reduction efficiency and achieve the effect of improving dust reduction efficiency

Active Publication Date: 2018-12-18
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem in the prior art that the coal mining machine is cutting coal against the wind to produce dust, and to provide a comprehensive dust control method for coal mining in a fully mechanized mining face.

Method used

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  • Comprehensive treatment method of dust produced during coal cutting against wind by coal cutter in fully-mechanized coal mining working face
  • Comprehensive treatment method of dust produced during coal cutting against wind by coal cutter in fully-mechanized coal mining working face

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Embodiment 1

[0022] Such as figure 1 , figure 2 as shown, figure 1 It is the front view when the coal shearer 8 mines the coal body 9, figure 2 For top view. The first spraying device 1 is arranged on the top of the shearer support 11, the second spraying device 3 is evenly arranged on the rigid cantilever beam 12, the dust curtain 2 is hung under the rigid cantilever beam 12, and the third spraying device 4 is evenly arranged On the side of the walking part of the coal mining machine that is close to the sidewalk. The dust curtain 2 and the rocker arm 10 of the windward side shearer can form a semi-closed space at the end of the shearer, which can accumulate the dust generated by the collapse impact. The fourth spraying device 5 is arranged on the side of the shearer face close to the coal wall, the fifth spraying device 6 is installed at the root of the rocker arm of the drum on the downwind side of the shearer, and the sixth spraying device 7 is arranged on the top of the shearer ...

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Abstract

The invention discloses a comprehensive treatment method of dust produced during coal cutting against wind by a coal cutter in a fully-mechanized coal mining working face. Firstly, a first spraying device is utilized to wet front and rear rollers of the coal cutter and nearby caved fragmentized coal bodies; then a dust blocking curtain, a second spraying device and a third spraying device are utilized to guide flying dust to move downward along one side of the coal wall; a fourth spraying device and a fifth spraying device are utilized to intensively and efficiently purify high-concentration dusty airflow guided to one side of the coal wall to move; and lastly, a sixth spraying device is utilized to settle the escaped dust. The whole dust falling efficiency reaches 90% or above, the respirable dust falling efficiency reaches 85% or above, and finally the effective treatment of the dust during coal cutting against wind by the coal cutter is achieved.

Description

technical field [0001] The invention relates to a method for controlling coal mine dust, in particular to a method for comprehensively controlling dust produced by coal shearers cutting against wind in fully mechanized working faces. Background technique [0002] When the coal shearer is cutting coal against the wind, the drum cutting and coal body caving impact dust production is the focus and difficulty of flour dust control in fully mechanized mining work. During the upwind coal cutting process of the shearer, the upper wind drum cuts the top coal, causing the area in front of it to collapse and impact the dust generation very seriously. Under the action of the wind flow, a high-concentration dust-laden air flow will be formed and quickly moved to the position of the rocker arm, and then After being blocked by the raised rocker arm, it turned over the cable trough, and finally diffused to the side of the sidewalk, causing the dust concentration in the shearer driver and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/04E21C35/22
CPCE21C35/223E21F5/04
Inventor 张设计李德文马威刘勇陈芳袁地镜吴国友黎志杨俊磊庄学安冉川杨桐陈玉涛
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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