Down-the-hole drill pipe improvement structure

Abstract

The invention discloses a down-the-hole drill pipe improvement structure, and aims to provide the down-the-hole drill pipe being low in noise, small in vibration, less in energy consumption and high in construction efficiency. The down-the-hole drill pipe improvement structure comprises a drill pipe body. The drill pipe body is composed of a pipe body, a male thread joint fixed to one end of the pipe body and provided with an airflow channel, and a female thread joint fixed to the other end of the pipe body and provided with an airflow channel. The pipe body (2) is filled with a PVC lining pipe (4). The inner diameter of the PVC lining pipe is the same as the diameter of the airflow channel (6-1) of the male thread joint and the diameter of the airflow channel (1-2) of the female thread joint. Drilling is conducted through the down-the-hole drill pipe improvement structure, thus the construction operation efficiency can be improved by about 15%, fuel of an air compressor is saved by nearly 20%, noise can be reduced by 60% or above, and the down-the-hole drill pipe improvement structure is an improvement of the down-the-hole drill pipe.

Description

technical field [0001] The invention relates to a down-the-hole drilling pipe, in particular to an improved structure of the down-the-hole drilling pipe. Background technique [0002] The down-the-hole drill pipe is a hollow drill pipe used to connect the down-the-hole drill bit, provide it with high-pressure air, and can be combined and extended according to needs; it usually consists of a male threaded joint and a female threaded joint welded at both ends of the pipe body. In order to facilitate slag discharge and reduce weight, the body of the DTH drilling pipe widely used at present usually adopts a large-diameter thin-walled hollow steel pipe structure; although it can meet the requirements for the use of DTH drilling tools, it has high noise, insufficient fracture protection, and energy consumption. Advanced issues need to be improved urgently. Contents of the invention [0003] In view of the above-mentioned defects in the prior art, the present invention aims to p...

AI Technical Summary

Problems solved by technology

In order to facilitate slag discharge and reduce weight, the body of the DTH drilling pipe widely used at present usually adopts a large-diameter thin-walled hollow steel pipe structure; although it can meet the requirements for the use of DTH drilling tools, it suffers from high noise, insufficient fracture protection, and energy consumption. Advanced issues need to be improved urgently

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