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Drill rod hole sealing device for coal mine punching

A sealing device, drill pipe hole technology, applied in drill pipe, sealing/isolation, drill pipe, etc., can solve the problems of harsh punching site environment, affecting collection effect, poor sealing between drill pipe and collection device, etc. The effect of a good sealing effect

Inactive Publication Date: 2014-10-29
HENAN TIEFULAI EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the punching process, with the swing and rotation of the drill pipe, the seal between the drill pipe and the collection device is not good, and the mixed fluid composed of water, cinder and coal powder easily flows out of the collection device along the drill pipe, which affects the collection effect and makes the punching The hole site environment has become harsh

Method used

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  • Drill rod hole sealing device for coal mine punching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] Such as figure 1 As shown, a drill pipe hole sealing device for coal mine punching, the sealing device is composed of a sealing part 2 and a fixing part 3 connected around the sealing part 2, the fixing part 3 is fixedly connected with the drill pipe hole around, and the sealing part 2 is a corrugated structure made of elastic material with continuous crests and troughs. The sealing part 2 is provided with an annular sealing lip 1 for the punching drill rod 5 to pass through. The sealing surface of the sealing lip 1 and the punching drill rod 5 The outer circumferential surface of the sealing lip 1 is matched with a support frame 4 inside the sealing lip 1 .

[0009] The sealing device is connected with other collecting devices through the fixing part 3 for cooperative use, and the fixing part 3 may adopt a flange structure.

[0010] The sealing surface of the sealing lip 1 is provided with wear-resistant elements, which may be copper sleeves, packings and the like.

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PUM

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Abstract

The invention discloses a drill rod hole sealing device for coal mine punching and relates to a sealing device. The sealing device is composed of a sealing part and a fixing part connected to the periphery of the sealing part, wherein the fixing part is fixedly connected with the periphery of a drill rod hole, the sealing part is made of an elastic material and is of a ripple structure provided with continuous crests and troughs, an annular sealing lip allowing a punching drill rod to penetrate through is arranged on the sealing part, the sealing surface of the sealing lip is matched with the peripheral surface of the punching drill rod, and a supporting frame is arranged inside the sealing lip. The sealing device is used for punching of a coal mine, can seal the drill rod hole and is good in sealing effect.

Description

technical field [0001] The invention relates to a sealing device, in particular to a drilling rod hole sealing device for coal mine punching. Background technique [0002] As coal mining becomes more and more difficult, the problem of gas outburst is becoming more and more serious. In order to solve this problem, the most ideal method at this stage is to use punching technology. Drill holes in the coal seam first, and then inject high-pressure water into the drilled gas drainage holes to flush the inside of the coal seam into a cavity, which effectively increases the diameter of the drill hole, enhances the air permeability of the coal seam, and is conducive to gas release. However, a large amount of gas and mixed fluid of water, cinder and pulverized coal will be produced during the punching process, which requires a collection device to collect the above-mentioned gas and mixed fluid. During the punching process, with the swing and rotation of the drill pipe, the seal bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B17/00
Inventor 武国胜王晓平徐云辉
Owner HENAN TIEFULAI EQUIP MFG CO LTD
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