Dry-type drilling dust removal system and dust removal method thereof

Abstract

The invention discloses a dry-type drilling dust removal system and a dust removal method thereof. The dry-type drilling dust removal system comprises a dust residue collector, a dust residue separator and a multi-stage dust collector which are sequentially communicated with the rear end of the dust residue collector and a negative pressure device used for driving gas with dust to flow; based on multiple kinds of sealing and dust removal principles such as flexible dynamic seal, ejecting drawing, inertial residue removal, cyclone dust removal and water bath dust suppression, firstly, the dustresidue collector is designed, under the condition that normal drilling is not affected, hard friction with a rotating drill pipe is avoided, and a sufficient sealing effect is guaranteed, slack coaland coal dust which are blown out by compressed air during drilling are effectively collected, dust residue separation, first-stage dust removal and second-stage dust removal are sequentially completed, inertial residue removal, cyclone dust removal and water bath dust removal are realized, and the collected coal dust is cleared off thoroughly. The unique power is downhole compressed air, and theproblems are solved that an existing dust collector is complex in structure, high in cost and poor in adaptability.

Description

technical field [0001] The invention relates to the field of drilling dust removal, in particular to a drilling dry drilling dust removal system and a dust removal method. Background technique [0002] Coal mine gas drainage is the main means to solve the large amount of mine gas gushing out and eliminate the danger of coal seam outburst. It is becoming more and more obvious that there are more and more spray holes, which are easy to cause injury accidents, and the accumulated water in the holes is not easy to discharge, and the problem of water blockage is extremely prominent, which seriously affects the gas drainage effect. More and more mines choose dry drilling technology to drill holes, so as to reduce the collapse and injection holes, and prevent the cleaning fluid from flowing into the holes during drilling construction. Dry drilling generally uses compressed air to remove slag. During the construction process, a large amount of coal slag and coal powder are blown ou...

AI Technical Summary

Problems solved by technology

At present, the orifice spray device and the downwind side hanging isolation net of the roadway are generally used to reduce dust. There are also some foam dust collectors based on the principle of foam dust removal, but most of them have the problems of too complicated structure, high cost, and poor applicability for underground environments. , some dust collectors also need to consume expensive additives, and the operation and maintenance costs are relatively high

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