Spiral groove double-channel multi-stage pushing deslagging drill rod and use method

Abstract

The invention relates to a spiral groove double-channel multi-stage pushing deslagging drill rod. The spiral groove double-channel multi-stage pushing deslagging drill rod comprises a rod body, a flowinjection pipe, fixing devices and a flow outlet pipe, wherein a flow guide groove which is distributed around the axis of the rod body in a spiral structure is formed in the outer side surface of the rod body; the flow injection pipe is embedded in the rod body and is connected with the inner surface of the side wall of the rod body through the plurality of fixing devices; the flow injection pipe is uniformly distributed around the axis of the rod body; the two ends of the flow injection pipe are connected with the rod body and the flow injection pipe respectively; an inflow opening is formed in the pipe wall of the flow injection pipe corresponding to the flow outlet pipe; an outflow opening is formed in the outer side surface of the corresponding rod body; and the flow injection pipe communicates with the outer side of the rod body through the flow outlet pipe. A use method of the spiral groove double-channel multi-stage pushing deslagging drill rod comprises the two steps of equipment assembly and drilling operation. According to the spiral groove double-channel multi-stage pushing deslagging drill rod, the deslagging capacity of the drill rod is greatly improved, the probability of drill jamming, drill holding or drill breaking during the working of the drill rod is reduced, the advantages of being good in deslagging effect, deep in drilling, few in drilling residue, goodin heat dissipation effect and the like are achieved, and the spiral groove double-channel multi-stage pushing deslagging drill rod is suitable for drilling of soft coal seams and high-stress coal seams, and is worthy of popularization and application in coal mine enterprises.

Description

technical field [0001] The invention relates to a helical-groove double-channel multi-stage push slag discharge drill pipe and a use method thereof, which belong to the technical field of drilling machinery equipment. Background technique [0002] Gas is one of the main factors threatening the safe production of coal mines, and gas drainage by underground drilling is the main means of gas control in most mines in the country. During the drilling process of gas drainage drilling, the phenomenon of drill pipe sticking, sticking and breaking occurs from time to time. The drilling depth is shallow, the drilling efficiency is low, the drilling cost is high, and the hole formation rate is low. Inferior question. The weak slagging ability of the drill pipe is one of the main reasons for the above phenomena and problems. [0003] With the development of coal mine science and technology and the popularization of mechanization and automation, many experts and scholars have made a lo...

AI Technical Summary

Problems solved by technology

[0005] The technical problem in the prior art solved by the present invention is to solve the problem of weak slag discharge ability of drill pipes, combined with the shortage of grooved drill pipes and smooth drill pipes in practical applications, based on the principle of multi-beam fluid multi-stage push external slag discharge , providing a helically grooved dual-channel multi-stage pushing slagging drill pipe that can significantly improve the slagging ability of the drill pipe

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