Gas-water-slag separation buffer gas-proof gas injection device for coal mining

Abstract

The invention discloses a gas-water-slag separation buffer gas-proof gas injection device for coal mining. The device comprises an ore body, a drilling machine, a buffer tank and a gas coal dust collector, wherein the drilling machine is fixedly connected to the ore body through a connecting member; a first through hole and a second through hole corresponding to the position of the drilling machine are disposed on the ore body; the first through hole and the second through hole are in communication with each other; the lower end of the drilling machine is provided with a drill pipe; the lowerend of the drill pipe runs through the first through hole; the gas coal dust collector is located in the buffer tank; the inner bottom of the buffer tank is fixedly connected with two buffer mechanisms; and the upper ends of the two buffer mechanisms are fixedly connected with a support plate. The device is compact in structure, prevents a large number of gas from escaping along a drill hole in acoal seam mining process by pumping a gas mixture at a coal mining position, thereby improving the personal safety of workers to a certain extent, and is able to separate the pumped gas mixture to reduce a waste of a large amount energy.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a gas-water slag separation buffer type anti-gas injection hole device for coal mining. Background technique [0002] Mine gas accidents are one of the major underground disasters. Gas accidents are characterized by suddenness and strong destructiveness. Once they occur, they will cause casualties and property losses. With the increase of mining depth, the gas content in the coal seam increases gradually, and the gas pressure in the coal seam increases. During the drilling process, especially when the coal is drilled through the rock roadway construction, the gas in the injection hole sometimes exceeds the limit. The fundamental way to control gas in outburst coal seams is gas drainage. In order to obtain a better drainage effect, advanced drilling technology is required first. When it is discharged into the roadway, it is necessary to install gas and water slag separation a...

AI Technical Summary

Problems solved by technology

The fundamental way to control gas in outburst coal seams is gas drainage. In order to obtain a better drainage effect, advanced drilling technology is required first. When it is discharged into the roadway, it is necessary to install gas and water slag separation anti-gas spray hole device to realize the balance principle of "drilling while pumping". The treatment equipment that effectively separates the gas, water and slag, so the gas injection hole and the gas and water slag will still be released in the roadway during the drilling process, causing serious safety hazards such as gas exceeding the limit, and the mixture of drilling slag and water depositing and accumulating , it is difficult to meet the requirements of safe mining, and there is no gas pressure sensor in the traditional blowout preventer, so it is impossible to judge the internal gas pressure, which is dangerous

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