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Three-wall water injection hole packer for coal mines

A technology for hole sealers and coal mines, applied in mining equipment, sealing/isolation, safety devices, etc., which can solve problems such as high cost, complex structure, and poor internal water flow.

Active Publication Date: 2014-07-02
HENAN TIEFULAI EQUIP MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of complex structure, high cost and poor internal water flow existing in the prior art hole sealing device that uses a water valve to change the water flow channel to achieve hole sealing, the present invention provides a three-wall water injection hole sealing device

Method used

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  • Three-wall water injection hole packer for coal mines

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Embodiment Construction

[0013] As shown in the figure, a three-wall water injection hole sealer for coal mines includes an outer cavity 3 formed by a core 6 of the hole sealer and a capsule 5, wherein the core 6 of the hole sealer is the inner cavity 1 and the middle cavity Two-layer structure composed of 2, the two ends of the core 6 of the hole sealer are provided with the end channel I7 and the end channel II9, and the outer wall of the core 6 of the hole sealer is provided with a water injection channel 4 and the core of the hole sealer 6. The thread 10 connected with the capsule 5. The capsule 5 has a built-in sealing body 8 for sealing the water in the outer cavity 3. During operation, after the pressure water enters the intermediate cavity 2 from the end channel I7, a part of the water passes through The end channel II9 enters the next hole sealer connected to it, and another part of the water enters the outer cavity 3 through the water injection channel 4 to stretch the capsule 5 and fix t...

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Abstract

A three-wall water injection hole packer for coal mines comprises a core part of the hole packer, and an outer cavity formed by a capsule, the core part of the hole packer is of a two-layer structure formed by an inner cavity and a middle cavity, the two ends of the core part of the hole packer are provided with an end channel I and an end channel II respectively, the outer wall of the core part of the hole packer is provided with a water injection channel and threads for connecting the core part of the hole packer and the capsule, and a sealing body is arranged in the capsule and used for sealing water in the outer cavity. According to the three-wall water injection hole packer for coal mines, due to the fact that small holes are formed in the outer wall of the middle cavity, water flow enters the outer cavity through the outer wall of the middle cavity so that the capsule can be propped open and can also enters the middle cavity of the hole packer connected with the channels through the channels in the two ends of the middle cavity, the fixation and hole sealing effects are achieved, water injected into a coal seam can reach places needing water through the channels in the hole packer, the three cavities are formed by three walls, and therefore pressure water used for sealing holes and the water injected into the coal seam can be separated from each other and will not be mixed.

Description

technical field [0001] The invention relates to an auxiliary device used in the field of coal mining, in particular to a three-wall water injection hole sealing device for coal mines. Background technique [0002] Coal seam water injection hole sealing device is an ideal equipment for sealing dense shallow holes in mining face and gas drainage holes in low drainage lanes. It is mainly suitable for coal or rock mass grouting, water injection and subsequent hole plugging, coal water injection , Dust reduction, coal pressure reduction, coal cracking, gas emission, etc. After the water injection achieves the effect, it can reduce the dust by more than 80%, improve the working environment of workers, prevent dust explosion accidents, moisten the coal body, and prevent the spontaneous combustion of the coal body. The existing seam hole sealer uses a water valve to divert the water flow and then stretches the capsule of the hole sealer to seal the water injection hole. The hole se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/12E21F5/02
Inventor 张建国武国胜王晓平
Owner HENAN TIEFULAI EQUIP MFG CO LTD
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