Guiding buffering anti-explosion device for vertical air shaft

Abstract

The invention discloses a guiding buffering anti-explosion device for a vertical air shaft. The device is mainly composed of an outer frame, an inner frame, a buffer umbrella, a central guiding column and a counter weight mechanism. Two vertical columns (201) of the outer frame are fixed on a shaft head base (1) respectively, a guiding cylinder (5) is arranged between two beams (202) of the outer frame, vertical columns (301) of the inner frame are mounted on the inner sides of the vertical columns of the outer frame in a vertical sliding mode, the bottom ends of the vertical columns of the inner frame are fixed with a door (12), ribs (601) of the buffer umbrella are fixed below the beams of the outer frame, a base plate (602) and a buffering block (603) are fixed below the ribs, and the central guiding column penetrates the guiding cylinder to be fixedly connected with the buffering umbrella and the door. According to the device, rigid guiding constraints and a buffering energy absorption apparatus are added, so that the reliability and the anti-explosion capacity of the anti-explosion door are improved, effects on normal ventilation of the shaft are small, and improvements of air shaft anti-explosion doors of production shafts are facilitated.

Description

Technical field [0001] The invention relates to a protective device for safe opening and resetting of a coal mine vertical air shaft explosion-proof door under the action of an explosion shock wave, and belongs to the technical field of mine ventilation safety. Background technique [0002] According to the requirements of my country's safety production regulations, explosion-proof doors should be installed at the mouth of the air shaft in the coal mine ventilation system. The function of the explosion-proof door is that when a gas and coal dust explosion occurs underground, the explosion shock wave rushes through the explosion-proof door to relieve the pressure, thereby ensuring that the main fan of the mine is not damaged. At present, the vertical air shaft of coal mines in our country uses an umbrella cover type explosion-proof door, which is composed of a door body, a sealed oil tank, a pulley frame, a counterweight, etc. Its explosion-proof pressure relief mechanism is: when...

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Problems solved by technology

[0004] The purpose of the present invention is to aim at the defects of the existing explosion-proof doors such as low anti-explosion ability and difficulty in reset, and propose a guiding buffer explosion-proof device on the basis of the existing explosion-proof doors, so as to improve the anti-explosion ability and reset reliability of the existing explosion-proof doors

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