Air jet flow dedusting device for drilling of mine

Abstract

The invention discloses an air jet flow dedusting device for drilling of a mine and belongs to the field of coal mine well equipment. The air jet flow dedusting device for drilling of the mine aims atachieving a great hole sealing effect and effectively exhausting dust. According to the technical scheme, the device includes an atomizing dedusting chamber, a jet flow pipe, a composite dust suctionhood for preventing hole jetting, a dust conveying pipe and a gas collector; the composite dust suction hood for preventing hole jetting comprises an upper cover body and a lower cover body, the twoopposite sides of the upper cover body are provided with a drill rod outlet and a drill rod inlet respectively, and the composite dust suction hood for preventing hole jetting is connected with the atomizing dedusting chamber and is in sealed connection with an expandable anti-jetting dust collecting pipe one end of which is provided with a steel wire rubber pipe; the outer wall of the expandableanti-jetting dust collecting pipe is provided with a water pipe communicated with the steel wire rubber pipe, the end, away from the steel wire rubber pipe, of the water pipe is provided with a quickconnector plug, and the steel wire rubber pipe is fixedly connected to the outer wall of the expandable anti-jetting dust collecting pipe in a sealed mode.

Description

technical field [0001] The invention relates to a dust collector, in particular to an air jet dust collector for mine drilling. Background technique [0002] Gas disasters are one of the main causes of coal mine safety accidents. With the expansion of the coal mining area and the increase in depth, some original low gas mines have also become high gas mines, so the situation of coal mine safety production is still severe. Accidents happen from time to time. Therefore, the prevention of gas disasters is of great significance to reduce coal mine accidents and ensure the healthy and sustainable development of the coal industry. Draining before mining is an important measure to reduce the gas content in the coal seam and prevent gas explosion accidents. Draining before extraction is the method of pre-extracting gas through drilling to reduce the gas content in the coal seam and improve the safety of mine production. At the same time, the collected gas can also be used as an en...

AI Technical Summary

Problems solved by technology

[0006] Through the above technical scheme, the above-mentioned expandable anti-blowout dust collection pipe is placed in the drill hole, and after being quickly connected with the external high-pressure water gun through the quick plug, high-pressure water is passed into the water pipe of the expandable anti-spray dust collection pipe, and the steel wire rubber tube Water-filled expansion makes the end of the expandable spray-proof dust-collecting tube with the steel wire rubber tube stuck in the drill hole, which improves the problem that the expandable spray-proof dust-collecting tube is easy to slip during the drilling process; and because the steel wire rubber tube has a certain The strength makes it difficult for water to flow out from the steel wire rubber tube and cause a gap between the expansion type anti-spray dust collection pipe and the drill hole, thereby reducing the gas leakage and improving the distance between the steel wire rubber tube and the expansion type anti-spray dust collection pipe. Excellent airtightness, no need to consume polymer foam material; by using a steel wire rubber tube to seal the gap between the drill hole and the expansion type anti-spray dust collection pipe, all the gas gas will be sucked into the expansion type anti-spray dust collection pipe In the process, solid particles such as gas, dust, and cinders are sprayed into the construction roadway from the gap between the drill hole and the expansion anti-spray dust collection pipe, which avoids gas exceeding the limit and improves the personal safety of workers in the mine roadway; and Through the sealing connection between the expansion anti-blowout dust collection pipe and the composite dust suction cover of the blowout hole, it can well cover the dust generated during the drilling process, effectively prevent the dust from gushing, and achieve the purpose of preventing the blowout hole; The high-pressure gas input into the pipe generates negative pressure in the jet pipe to provide the power to transport dust and gas outside, without static friction, which is safer; after the gas gas and dust are discharged from the drilling hole, they pass through the expansion dust collection pipe and the blowout prevention hole in sequence The composite dust collection hood and dust delivery pipe enter the atomization dust removal chamber, and the dust is atomized by the spraying of the annular sprayer, and the sewage is intercepted by the interceptor, and then discharged through the sewage pipe below the atomization dust removal chamber, and the purified The mixed gas of gas and air is sucked into the jet tube, and then discharged into the gas discharge pipe through the gas collector, effectively removing the dust generated during the drilling process, realizing the separation of dust and gas, and achieving the purpose of collecting gas , Improve the personal safety of workers during coal mining and drilling

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