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Novel coal mine vertical air shaft explosion-proof door

A technology of explosion-proof doors and vertical air shafts, which is applied in the field of explosion-proof doors, can solve problems such as failure to restore ventilation, and achieve the effects of improving disaster resistance, avoiding expansion, and ensuring stability

Inactive Publication Date: 2015-11-25
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the problem that the explosion-proof door of the vertical wind shaft of the existing coal mine was lifted off when the coal mine exploded, and the ventilation could not be restored at the first time

Method used

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  • Novel coal mine vertical air shaft explosion-proof door
  • Novel coal mine vertical air shaft explosion-proof door
  • Novel coal mine vertical air shaft explosion-proof door

Examples

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Effect test

Embodiment Construction

[0011] 1. Add two fixing devices at both ends of the explosion-proof door, one end is fixed with a hinge, so that it can only be opened on one side like a common manhole cover, and the other end is provided with a hinge hole, which will not be dealt with temporarily. After the hinged end, a reinforced concrete wall is built. Two fixed pulleys are set at both ends of the upper part of the wall. The upper two pulleys are connected with steel wire ropes. One end of the steel wire rope is connected to the explosion-proof door, and the other end is connected to the counterweight through two fixed pulleys.

[0012] 2. A section of I-beam 7 is hinged at the center of the explosion-proof door, and a section of I-beam 8 is hinged above the center line of the wall. I-beam 7 and 8 are hinged, and a detachable spring is provided at the hinge.

[0013] 3. Parallel the two wire ropes of the counterweight to the hinged I-beam.

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Abstract

The invention relates to a coal mine vertical air shaft explosion-proof door and mainly relates to the field of the application of coal mine ventilating systems and in particular an explosion-proof door with one end fixed via a hinged way and other end equipped with a hinge hole. A reinforced concrete wall is built behind the hinged end; two ends of the upper end of the wall body are respectively provided with a fixed pulley; the explosion-proof door and a balance heavy hammer are connected via two steel ropes of the fixed pulleys; and I-shaped steel (7,8) is hinged and together with a detachable spring (1) forms a restorer for the explosion-proof door. Upon under-well explosion, pressure is released from one side with an action of blast wind; after pressure release, the explosion-proof door quickly restores with an action of the restorer; upon air reversing drill for a mining well, drill participants only need to insert a steel beam into a start end of the explosion-proof door after receiving a drill order; and the explosion-proof door can be quickly closed. The novel coal mine vertical air shaft explosion-proof door is rationally structured and possesses reliable performance, thereby meeting demands of air reversing drills and improving impact-resisting capability of the explosion-proof door.

Description

technical field [0001] The invention relates to the fields of coal mine safety protection and mine ventilation system adjustment, and uses a mechanical structure to realize an explosion-proof door that can be automatically closed in time after an explosion occurs in a coal mine. Background technique [0002] The explosion-proof door is a special sealed manhole cover installed on the exhaust wellhead where the main fan is installed. At present, most of the explosion-proof doors for vertical wind shafts used in coal mines are composed of manhole covers, steel wire ropes, and counterweights. During normal ventilation, it is used to isolate the downhole airflow from the ground atmosphere to prevent short-circuit of the airflow and ensure the normal ventilation system. When a gas or coal dust explosion accident occurs underground, the explosion-proof door is opened by the explosion airflow, so that the explosion airflow is directly discharged to the ground atmosphere, which play...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/16E21F17/12
Inventor 辛嵩陈兴波韩庆宇刘庆仁齐晓峰卜凡秀
Owner SHANDONG UNIV OF SCI & TECH
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