Coal mine gas extraction device

Abstract

The invention relates to a gas extraction device, and in particular, relates to a coal mine gas extraction device. The technical problem to be solved by the invention is to provide the coal mine gas extraction device. The coal mine gas extraction device comprises a connecting bottom frame, a real-time control screen, a right side connecting column, a right side supporting frame, a top plate, a coal mine sorting and separating mechanism, a coal briquette combined gas extraction mechanism and a pulverized coal compression extraction mechanism. A real-time control screen is arranged in the middleof the left end of the connecting bottom frame; the middle of the right end of the connecting bottom frame is connected with the right connecting column; the coal briquette combined gas extraction mechanism is arranged on the right side in the connecting bottom frame. According to the invention, coal briquettes and pulverized coal cinder of raw coal are efficiently separated, gas condensates attached to the surfaces of the coal briquettes are effectively removed, gas carried in gaps of combined gas and pulverized coal cinder in the coal briquettes is rapidly crushed and extracted, and the gasin the raw coal is removed in real time after the raw coal is taken out of the mine.

Description

Technical field [0001] The invention relates to a gas extraction device, in particular to a coal mine gas extraction device. Background technique [0002] Gas is formed by the decomposition of cellulose and organic matter by anaerobic bacteria in the early stage of coal accumulation by ancient plants. In a high temperature and high pressure environment, while coal is formed, gas continues to be generated due to physical and chemical effects. Gas is a colorless and odorless gas, but sometimes you can smell an apple-like scent. This is due to the fact that aromatic hydrocarbon gas and gas gush out at the same time. The relative density of gas to air is 0.554, and the density of gas under standard conditions is 0.716kg / m 3 The permeability of gas is 1.6 times that of air. It is insoluble in water, does not support combustion and cannot maintain breathing. When it reaches a certain concentration, it can suffocate people due to lack of oxygen, and can burn or explode. The rock exist...

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Problems solved by technology

[0004] The present invention overcomes the fact that the raw coal cannot be degassed in real time in the prior art. The raw coal in the mine carries a large amount of gas after excavation, and the subsequent degassing treatment often fails to remove the gas contained in the raw coal and the surface of the raw coal, which leads to a large amount of gas content in the mine. High, easy to explode, and the produced raw coal contains a large amount of gas, which will endanger human health when processed and used. At the same time, there is a danger of explosion when burned and used. The gas in the raw coal diffuses freely, resulting in waste of gas. The technical problem to be solved is to provide a coal mine gas extraction device

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