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Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave

An explosion shock wave, automatic closing technology, applied in mining installations, mining equipment, earthwork drilling and other directions, can solve problems such as hazards

Inactive Publication Date: 2009-09-16
樊铁山 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an explosion occurred especially in an air shaft service area of ​​Duofengjing Coal Mine. The explosion-proof cover (door) installed in the air shaft was opened by the explosion shock wave. The negative pressure of the air shaft disappears due to the opening of the explosion-proof cover (door), and the air shaft becomes an air inlet shaft due to the action of other air shafts. The area served by other wind shafts spreads, thereby causing the area served by other wind shafts to be endangered by the explosion accident

Method used

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  • Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave
  • Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave
  • Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave

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Experimental program
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Effect test

Embodiment 1

[0033] In embodiment one: the application of the method proposed by the present invention in the air shaft is a vertical shaft, including: the existing air shaft explosion-proof cover (1) and sealing groove (15), counterweight device (3), anti-wind device (4) and other auxiliary facilities basically do not change the structure and function, and increase the guide device (8) of the explosion-proof cover (8), the limit device of the explosion-proof cover (1) and the automatic closing device of the explosion-proof cover (1), which is characterized in that: the explosion-proof cover (1) The limit device installs four guide rods (6) of the explosion-proof cover (1) and four groups of counterweight device vertical rods (12) on a horizontal plane at the top; the guide device (8) of the explosion-proof cover (1) is installed on the explosion-proof cover (1) around, so that the opening and closing of the explosion-proof cover (1) can only move vertically along the center line of the wel...

Embodiment 2

[0038] Embodiment two: the method that the present invention proposes is the application in the inclined shaft of air shaft, and the rotation shaft (19) of this inclined shaft explosion-proof door (20) is at the top of explosion-proof door (20), comprises: existing air shaft explosion-proof door (20) and counterweight device (3), anti-wind device (4) and other ancillary facilities basically do not change the structure and function, increase the automatic closing device of the explosion-proof door (20), it is characterized in that: because the explosion-proof door (20) has guiding device and limit device, so do not increase the guide device and limit device when using the explosion-proof door (20); two sets of automatic closing devices for the explosion-proof door (20) are installed in total; the automatic closing device for the explosion-proof door (20), tension spring The snare end is directly installed on the shaft bottom plate (21) inside the explosion-proof door (20), and t...

Embodiment 3

[0040] In embodiment three: the method that the present invention proposes is the application in the inclined shaft, and the rotating shaft (19) of this inclined shaft explosion-proof door (20) is on the both sides of shaft, including: existing air shaft explosion-proof door (20 ) and ancillary facilities basically do not change the structure and function, and increase the automatic closing device of the explosion-proof door (20). Guide device and limit device; two sets of automatic closing devices for explosion-proof doors (20) are installed on each door, and four sets are installed crosswise in total; automatic closing devices for explosion-proof doors, the trap end and the edge of the explosion-proof door (20) Directly connected, the tension spring end is directly installed on the inner well wall (22) of the explosion-proof door (20), which only works when the explosion-proof door (20) is opened by the explosion shock wave, and does not affect the explosion-proof door (20) a...

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Abstract

Method for automatically closing coal mine explosion-proof cover (door) after opening by explosion shock wave belongs to the coal mine safety technical field. The method needs components of aa present ventilation shaft explosion-proof cover (door), a sealing groove, a counterweight device and an air reversing device which have unchanged structure and function, an additional guiding device of the explosion-proof cover, a stop device of the explosion-proof cover and an automatic closing device of the explosion-proof cover (door); the guiding device of the explosion-proof device makes the closing and opening of the explosion-proof cover vertically move along well center line; the stop device of the explosion-proof cover comprises an outer ring, a pressure reduction spring and an inner ring, is a lifting stop position of the explosion-proof cover for buffering; the automatic closing device of the explosion-proof cover (door) comprises a stretching spring, a safety belt and a coiler, is directly arranged on well wall or floor plate, and is directly connected with the explosion-proof cover (door), so that the automatic closing device can automatically close explosion-proof cover (door) after opening by explosion shock wave. In addition, the method does not influence functions of the explosion-proof cover (door) and auxiliary facility, and solves problem of ventilating current disorder after coal mine explosion.

Description

technical field [0001] The invention relates to a method for automatically closing an explosion-proof cover (door) of a coal mine after being opened by an explosion shock wave, in particular to a method for automatically closing an explosion-proof cover (door) of a multi-wind shaft coal mine after being opened by an explosion shock wave, and belongs to the technical field of coal mine safety. Background technique [0002] The explosion-proof cover (door) is a special facility installed on the wellhead of the wind shaft in the coal mine. It is called an explosion-proof cover installed on the vertical shaft, and is called an explosion-proof door installed on the inclined shaft. Its characteristics are: position: directly facing the wellhead; size: cover the entire section of the air shaft; function: when an explosion occurs underground in a coal mine, it will be opened by the shock wave to protect the fan from damage. At present, the explosion-proof cover (door) of coal mine a...

Claims

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Application Information

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IPC IPC(8): E21F17/12E05C19/00
Inventor 樊铁山
Owner 樊铁山
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