Coal mine underground gas cyclic pumping and exhaust system

Abstract

The invention discloses a coal mine underground gas cyclic pumping and exhaust system which comprises an exhaust pipe, wherein the exhaust pipe is fixedly inserted and arranged in a soil and rock layer and extends into a mine; a gas inlet pipe is fixedly inserted and arranged in the exhaust pipe; and two exhaust branch pipes are symmetrically inserted and arranged at one end, positioned in the mine, of the exhaust pipe in a communicating way. Air circulation power is provided by an exhaust fan and a blast blower; both the exhaust fan and the blast blower are positioned on the ground outside the mine, so that the overhauling is convenient; when faults and the like occur, no influence can be generated in the mine; through the exhaust pipe, the exhaust branch pipes and gas inlet branch pipes,cyclic gas flow is formed in the mine; the gas exhaust speed is accelerated; through a gas inlet mechanism, a gas suction mechanism and air pipes, cyclic gas flow is formed in each region, so that the gas exhaust speed is further accelerated; the possibility of carbon monoxide poisoning of constructors is reduced through the gas inlet height of the gas inlet mechanism; impurities in gas are filtered through a dust filtering box; and the pipeline and exhaust fan blockage is avoided.

Description

technical field [0001] The invention relates to the field of coal mine mining safety, in particular to an underground gas circulation extraction system in coal mines. Background technique [0002] Coal mining needs to open a mine underground. When mining coal in the mine, there will be gas gas entering the mine through the coal seam, and the gas contains carbon monoxide gas, which is toxic and easily poses a threat to the life of the miners. And the gas in the gas Methane, etc., when the concentration reaches a certain level, it is easy to burn and explode, causing mine mining accidents. Therefore, in the process of coal mining, it is necessary to pump the gas in the mine to avoid the increase of the internal gas concentration. [0003] In the patent document with the patent application number 201811484832.X, a "quick extraction device for underground gas fire prevention in coal mines" is proposed, which includes an air inlet pipe and an exhaust pipe. The rear end of the pi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that electric equipment such as water pumps and motors need to be placed at the gas extraction point, and failure of the electric equipment can easily cause explosions and increase the risk. system

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