Fireproof rapid pumping and discharging device for underground coal mine gas

Abstract

The invention discloses a fireproof rapid pumping and discharging device for underground coal mine gas. The fireproof rapid pumping and discharging device for the underground coal mine gas comprises an air inlet pipe and a pumping and discharging pipe, an air inlet fan is arranged on the inner side of the air inlet pipe, and a first movable wind shield is arranged at the rear end of the air inletpipe. A dust fall bin is arranged at the tail end of the air inlet pipe, a second movable wind shield is disposed on the outer side of an air pumping port, a nozzle pipe is disposed on the inner sideof the dust fall bin, and a water return pipe is disposed below the dust fall bin. A pumping and discharging tube is located at the rear end of the dust fall bin. The coal mine underground gas fireproof rapid pumping and discharging device is provided with the first movable wind shield and the second movable wind shield, the movement adjustment of the first movable wind shield and the second movable wind shield is used for changing the air inlet amount of fresh air at the air inlet pipe and gas in a mine at the air pumping port during the use of the fireproof rapid pumping and discharging device, the gas entering the device is properly diluted, the gas concentration in the device is kept at the safe concentration, and the gas is prevented from burning and exploding during the discharge process.

Description

technical field [0001] The invention relates to the technical field related to coal mine mining, in particular to an underground gas fire prevention and rapid extraction device for coal mines. Background technique [0002] In the process of unoccupied mining, more gas is usually produced. The gas in the coal mine will not only affect the health of the staff, but also cause the danger of combustion and explosion when the gas concentration is high. Therefore, it is necessary to The gas in the mine is pumped out, and most of the existing underground gas pumping devices in coal mines only use ordinary exhaust fans to pump up the gas, but they cannot control the gas concentration during the pumping process. Pumping when the concentration is high is also prone to accidents, which affects the safety of coal mine production. [0003] In view of the above problems, an innovative design is carried out on the basis of the original coal mine underground gas fire prevention and rapid ex...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a fire-proof and rapid extraction device for underground gas in coal mines, so as to solve the problem that the gas extraction device is not convenient to control the gas concentration of the extraction gas and is prone to accidents in the background technology

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