Recovery connector for drilling

Abstract

The invention discloses a recovery interface device for drilling, which comprises two fastening shells which are buckled with each other and form a docking chamber, a joint pipe which is connected with one fastening shell and communicates with the docking chamber, and is arranged in the fastening shell The lower part of the installation pipe communicated with the docking chamber, wherein at least 2 bolt holes are provided on the pipe wall of the installation pipe, and fastening bolts are provided in each bolt hole, and the upper end of the fastening shell is provided with A drill pipe passage hole, and a drill pipe holding sleeve is arranged in the drill pipe passage hole. The present invention adopts a semi-joint structure, which can be easily matched with the drill pipe and the casing for installation and disassembly, and perfectly connected with the opening at the upper end of the casing, so that various solids, liquids, The gaseous mixed substances are recovered to avoid diffusion, pollute the environment and affect the health of operators.

Description

technical field [0001] The invention relates to the technical field of exploration and environmental protection, in particular to a recovery interface for drilling. Background technique [0002] Railway engineering survey occupies a very important position in railway construction and is the most basic work in the entire railway construction project. It not only directly affects the rationality of the entire design scheme, but also directly relates to the budget of the entire railway project. Therefore, it is particularly important to obtain complete, accurate and reliable core data from the borehole as much as possible. [0003] In the investigation of railway engineering, we often encounter accumulation strata formed by geological phenomena such as weathering and transportation, such as weathering, river bed, glacier ice water, landslide, engineering backfill and other accumulation strata. Accumulation of filling materials such as crushed stones and sand and mud, with loos...

AI Technical Summary

Problems solved by technology

[0005] However, when percussion drilling breaks rocks and formations, a large number of broken particles and dust appear, and a large amount of water is sprayed from the top of the casing in the formation with rich groundwater, which has a negative impact on the construction environment and the health of operators. , the lack of collection and treatment of these substances in the prior art leads to the destruction of the construction environment

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