Pneumatic type gas and slag separation device and method

Abstract

The invention discloses a pneumatic type gas and slag separation device and method which comprises a methane dust catcher, a connection flexible pipe, a high pressure pipe, a pneumatic ejector, a dust-removing nozzle, a dust-removing separation bucket, a methane connection pipe and a methane extraction pipe. The methane dust catcher is used for collecting dust in a drilling hole and gushing methane in the drilling construction process. The connection flexible pipe is used for connecting the methane dust catcher and the pneumatic ejector. The high pressure pipe is used for delivering high pressure air into the pneumatic ejector to enable negative pressure to be produced in an ejector suction chamber. The pneumatic ejector is used for increasing pressure difference between an inlet and an outlet of the connection flexible pipe and delivering suctioned gas water and slag mixing fluid to the dust-removing separation bucket, and the dust-removing separation bucket sediments dust through the dust-removing spraying nozzle and separates the gas water and slag mixing liquid into gas, liquid and solid. The pneumatic type gas and slag separation device and method is simple in structure and capable of effectively reducing working face methane and dust density, and simultaneously is high in spraying and dust removing efficiency and less in water usage.

Description

technical field [0001] The invention relates to a coal mine drilling dust removal device, in particular to a pneumatic gas slag separation device using compressed air in a coal mine as power. Background technique [0002] With the increase of coal mining depth, gas disasters are becoming more and more serious, and pre-extraction of gas through drilling has become an important means of controlling gas disasters. At present, the drilling pre-extraction of gas mainly uses tunnel drilling rigs with compressed air and slag removal. However, due to the high pressure of coal seam gas and high gas pressure, problems such as gas exceeding the limit and dust accumulation often occur during drilling. Gas exceeding the limit seriously restricts mine safety production. Excessive dust concentration in the air not only endangers the health of workers, but also affects mine safety production. [0003] In order to solve the problem of gas overrun and dust accumulation in the process of dry ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the potential safety hazards caused by the drilling slag and gas gushing out of the drilling in the roadway during the drilling process of dry drilling in the tunnel, and proposes to use the principle of compressed air ejection and spray dust removal technology to realize Dust is separated from gas and water slag, and its structure is simple, which can not only remove dust with high efficiency, but also effectively prevent the occurrence of gas exceeding the limit

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