Large-section expanded-base anti-abrasion and anti-blocking draw shaft structure for underground connection with crushing cave group

Abstract

The invention discloses a large-section expanded-base anti-abrasion and anti-blocking draw shaft structure for underground connection with a crushing cave group. The large-section expanded-base anti-abrasion and anti-blocking draw shaft structure comprises a draw shaft; one side, far away from a section, of the inner wall of the draw shaft protrudes outwards to form an expanded storage bin; the draw shaft is smoothly connected with the top of the expanded storage bin through a transition section; a bidirectional stepped material distribution structure is arranged at the bottom of the draw shaft; a feeder cave is arranged at the bottom of the material distribution structure; the end, close to the expanded storage bin, of the feeder cave communicates with a crushing cave; and a sealing-tape machine footrill is arranged at the bottom of the crushing cave. The bottom expansion structure of the draw shaft is used for avoiding extrusion arches generated at the bottom during full-well production, so that blocking is prevented; and a conventional inclined plane structure is replaced by the stepped material distribution structure, and abrasion of movable materials to the surface of the structure is reduced through accumulating the materials in steps.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a large-section bottom-expanding anti-wear and anti-blocking chute structure connecting crushing chamber groups underground. Background technique [0002] As an efficient and environmentally friendly vertical transportation method, the chute is often used in mining. The diameter of the commonly used chute is 3m to 4m, and some projects have a super-large cross-section chute with a diameter of 8m. During the operation of the chute structure, the bottom storage bin is prone to wear and tear on the bottom lining structure due to the wool falling at high speed. Wear and plugging will affect the operating efficiency during the operation of the well slide, and will cause production interruption or safety accidents in severe cases. Therefore a kind of chute structure with anti-wear and anti-blocking ability is very necessary. [0003] Based on the above situation, the prese...

AI Technical Summary

Problems solved by technology

During the operation of the chute structure, the bottom storage bin is prone to wear and tear on the bottom lining structure due to the high-speed falling wool, and at the same time, when the well is running at full capacity, it is easy to form an extrusion arch, resulting in well blocking

Wear and plugging will affect the operating efficiency during the operation of the well slide, and in serious cases will cause production interruption or safety accidents

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