Coal mine underground fan anti-reversing device

An anti-reversal, air duct technology, applied in mine/tunnel ventilation, mining equipment, earth-moving drilling, etc., can solve the problems of suffocation and death, personal safety of crisis personnel, etc., to ensure personal safety and prevent secondary disasters. Effect

Pending Publication Date: 2018-10-09
GUIZHOU PANJIANG REFINED COAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide an anti-reversal device for the air duct used in underground coal mines, which is used to solve the problem that when a gas explosion accident occurs underground in a coal mine, the high-concentration gas flows back into the fresh air flow through the iron air duct, endangering the personnel in the fresh air flow. Personal safety, causing death by suffocation

Method used

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  • Coal mine underground fan anti-reversing device

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Embodiment Construction

[0014] The present invention will be further introduced below in conjunction with the accompanying drawings. An air duct anti-reversal device for underground coal mines according to the present invention includes an iron air duct 1, a support rod 2, and two semicircular anti-reverse cover plates. 3. The retaining rod 4 and the rotating shaft 5, the supporting rod 2 is vertically arranged in the iron fan cylinder 1, and the two anti-reversal cover plates 3 are respectively arranged on both sides of the supporting rod 2 and pass through the rotating shaft 5 and the supporting rod 2 Hinged, the baffle rod 4 is arranged on the side of the anti-reversal cover plate 3 close to the air inlet of the iron wind cylinder 1 .

[0015] The rotating shaft 5 is also provided with a nut 6 for fixing the rotating shaft 5 .

[0016] Both the support rod 2 and the retaining rod 4 are round steel with a diameter of 12mm, which has better mechanical strength, ensuring that the support rod 2 can ef...

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Abstract

The invention discloses a coal mine underground fan anti-reversing device. The coal mine underground fan anti-reversing device comprises an iron fan, a support rod, two semi-circular anti-reversing cover plates, a stopping rod and a rotating shaft, wherein the support rod is vertically arranged inside the iron fan; the anti-reversing cover plates are arranged on both sides of the support rod and hinged to the support rod; the stopping rod is arranged on one side of the anti-reversing cover plates, which is closed to the air inlet of the iron fan. During normal ventilation under a coal mine, the anti-reversing cover plates inside the iron fan can be automatically opened under the air pressure of a local fan, and the iron fan normally supplies power; when a gas accident happens, abrupt gas pressure is higher than the air pressure generated by the local fan, and under the pressure of the abrupt gas, the anti-reversing cover plates can be closed to block the iron fan and further reversed gas. Therefore, the coal mine underground fan anti-reversing device can effectively solve the problem that, when gas explosion accidents under the coal mine take place, high-concentration gas can reversely flow into fresh air via the iron fan to result in death by suffocation, thereby ensuring personal safety to the maximum degree and avoiding secondary disasters caused by accident diffusion.

Description

technical field [0001] The invention relates to the technical field of coal mine safety, in particular to an anti-reverse device for an air duct used in underground coal mines. Background technique [0002] Coal and gas outburst is a safety accident that is prone to occur in coal mines. The high-concentration gas gushing out of coal and gas outburst will cause disasters such as gas combustion and explosion when it encounters a fire source. In this case, the outburst high-concentration gas passes through iron. The air duct counter-flows into the fresh air flow, endangering the personal safety of the personnel in the fresh air flow, and causing death by suffocation. Therefore, it is necessary to propose a new type of air duct anti-reversal device for underground coal mines, which is used for local ventilators in coal mine anti-outburst working faces On the air duct, it can prevent the coal and gas outburst accidents in the mine from causing the wind flow to reverse, and can qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/04E21F1/10
CPCE21F1/04E21F1/10
Inventor 纪绍思彭从庆路熙洲
Owner GUIZHOU PANJIANG REFINED COAL
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