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Mechanical screw sealer for coal seam gas drainage

A mechanical, hole-sealing technology, which is used in gas discharge, safety devices, mining equipment, etc., can solve the problems of poor sealing quality and short sealing length in mines, so as to improve the sealing efficiency and simplify the sealing operation process. Effect

Inactive Publication Date: 2015-08-26
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In my country's gas drainage mines, about 2 / 3 of the mines have short sealing length and poor sealing quality

Method used

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  • Mechanical screw sealer for coal seam gas drainage

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specific Embodiment

[0014] Such as figure 1 As shown, the mechanical screw sealer for coal mine gas drainage includes a drainage pipe 01, a mechanical sealer 02, a nut 03, a gasket 04, a pressure gauge 05, a valve 06, and the like.

[0015] When in use, the discharge pipe 1 is placed in the discharge hole, and the mechanical hole sealer 02 to be connected is engaged with the end of the discharge pipe 01 near the discharge hole through threads, and the threads on the outside of the mechanical hole sealer 02 are in contact with the coal rock. The wall is occluded to complete the connection between the coal rock, the mechanical hole sealer and the hole sealer. In order to increase the sealing effect of the extraction pipe 01, a nut 03 and a sealing gasket 04 are provided in the front section of the mechanical hole sealer 02 and the extraction pipe 01, and the threaded pipe can be installed, disassembled and replaced through the installation and removal of the nut 03. In order to facilitate the cont...

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Abstract

The invention discloses a mechanical spiral hole packer used for draining coal seam gas. The mechanical spiral hole packer used for draining the coal seam gas comprises a draining pipe and a mechanical hole packer, wherein twin-line conical threads are arranged on the outer wall of the rear portion of the draining pipe, twin-line conical threads are arranged on the inner wall of the mechanical hole packer, multi-line conical threads are arranged on the outer wall of the mechanical hole packer, and the threads on the inner wall of the mechanical hole packer are meshed with the threads on the outer wall of the draining pipe. The threads at the rear portion of the draining pipe is meshed with a nut, a sealing gasket is arranged between the nut and the mechanical hole packer, and a valve and a pressure gauge are arranged at the rear end of the draining pipe. The mechanical spiral hole packer is used for draining the coal seam gas, can be reused, improves the hole-packing quality, and meets the requirement for gas drainage.

Description

technical field [0001] The invention relates to a device for preventing and controlling coal mine gas disasters, in particular to a mechanical screw sealer for coal mine gas drainage. Background technique [0002] Gas drainage is a fundamental measure to prevent and control gas disasters in coal mines. Government departments and coal mining enterprises attach great importance to gas drainage. Among them, drilling sealing is a key technical link of gas drainage. The quality of hole sealing directly affects the efficiency of gas drainage. In my country's gas drainage mines, about 2 / 3 of the mines have short sealing length and poor sealing quality. About 65% of mining faces in my country have a pre-drainage gas concentration lower than 30%, failing to meet the requirements of the "Regulations on the Prevention and Control of Coal and Gas Outbursts", which reflects to a certain extent the poor quality of drainage drilling and sealing. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00
Inventor 杨小彬秦跃平陶振翔刘伟蔡彬彬卢艳丽王博
Owner CHINA UNIV OF MINING & TECH (BEIJING)