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Mine drilling exhaust pipe traction non-return device

A gas extraction pipe and backstop technology, which is applied in the direction of drill pipes, safety devices, drill pipes, etc., can solve the problems that it is difficult to realize the interconnection between the bottom of the mine and the gas extraction device, it is difficult to reach the bottom of the borehole, and the gas extraction is unfavorable. , to achieve the effect of convenient production and installation, good cooperation, and smooth progress

Pending Publication Date: 2021-03-19
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, in order to meet the diverse shapes of boreholes, hoses are used for the exhaust pipes, and the hoses are very easy to exit when entering the borehole, and it is not easy to reach the bottom of the borehole. It is difficult to realize the connection between the mine bottom and the air extraction device. The interconnection between the gas extraction and discharge is very unfavorable

Method used

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  • Mine drilling exhaust pipe traction non-return device
  • Mine drilling exhaust pipe traction non-return device
  • Mine drilling exhaust pipe traction non-return device

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 It is a structural schematic diagram of the present invention, figure 2 for figure 1 sectional view of image 3 for figure 1 The bottom view of the bottom view, as shown in the figure, the mine drilling air extraction pipe traction backstop device in this embodiment includes a backstop thrust head 2 detachably installed at the end of the air extraction pipe 1, and the backstop thrust head 2 includes The main body 2a and the fastening sleeve 2b, the main body 2a communicates with the exhaust pipe 1, the fastening sleeve 2b is used to assist the tight connection between the main body 2a and the end of the exhaust pipe 1, and the reverse thrust head 2 includes a connecting component and backstop components.

[0021] In this embodiment, the connecting assembly includes a clamping part arranged on the body 2a and a fastening sleeve 2b sleeved on the outer end of the exhaust pipe 1, the fastening sleeve 2b is threadedly connected with the clamping part, and the ...

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Abstract

The invention discloses a mine drilling exhaust pipe traction non-return device. The mine drilling exhaust pipe traction non-return device comprises a non-return thrust head detachably installed at the end of an exhaust pipe, the non-return thrust head comprises a body and a fastening sleeve, the body communicates with the exhaust pipe, the fastening sleeve is used for assisting in fastening connection of the body and the end of the exhaust pipe, and the non-return thrust head comprises a connecting assembly and a non-return assembly. According to the mine drilling exhaust pipe traction non-return device, the connecting assembly and the non-return assembly are used for assisting a hose to enter and be fixed into a drilled hole, the hose is helped to communicate a mine with an exhaust device to achieve gas exhaust, the exhaust pipe is kept not to return, and smooth gas exhaust is guaranteed.

Description

technical field [0001] The invention relates to the technical field of gas exhaust technology, in particular to a traction backstop device for a mine drilling air extraction pipe. Background technique [0002] In the process of coal mining, a large amount of gas will be produced in the mine. In the safety operation of coal mining, the gas needs to be discharged from the mine in time. The conventional method is to use the drill pipe to drill directly to the bottom of the mine to directly contact the gas. Drill the hole and then put it into the extraction pipe to connect the mine and the extraction device, and then the gas in the mine is extracted by the external extraction device through the extraction pipe. Generally, in order to meet the diverse shapes of boreholes, hoses are used for the exhaust pipes, and the hoses are very easy to exit when entering the borehole, and it is not easy to reach the bottom of the borehole. It is difficult to realize the connection between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01E21B17/00E21F7/00E21B43/00
CPCE21B23/01E21B17/20E21F7/00E21B43/006
Inventor 刘国忠李尚国王正辉徐俊郝建国刘华锋王海生杜云峰赵晓夏闫凯梅勇谢强燕朱简庾萍
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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