Rock screw breaking-resisting coal bunker

Abstract

The present invention relates to a rock helical groove anti-breaking bunker, including inlet guide device and coal-feeding machine, on the rock between upper tunnel and lower tunnel a vertical cylindrical bunker body is cut, and the upper circular hole of said bunker body is equipped with a sealing grate with inlet, and the lower end of said bunker body is equipped with a reduced cone hole whose bottom outlet is equipped with coal-feeding machine, said coal-feeding machine is equipped with helical groove cut into the inner wall of the cylindrical rock bunker body, and the upper end of the helical groove is connected with the inlet of the sealing grate. Said invention has good effect for preventing coal block from being broken, and its coal block breaking rate is low.

Description

technical field [0001] The invention relates to coal production, transportation and storage facilities, in particular to a coal storage bunker which is used in underground coal mines and has spiral grooves dug on the walls of circular vertical bins to prevent lump coal from breaking. Background technique [0002] Lump coal is a high value-added product of coal mines. Generally, the unit price of lump coal is about 100 yuan higher than that of the same type of coal. Increasing coal lump coal rate is an important way for coal enterprises to increase economic benefits. With the rapid development of the modern economy, the demand for lump coal at home and abroad has increased substantially, and lump coal occupies a large proportion in the coal market, and at the same time, there are stricter requirements on its quality. In the process of production, transportation and storage, anti-breaking has become an important way to ensure a certain lump coal rate. However, the key part o...

AI Technical Summary

Problems solved by technology

(1) Vertical coal bunker: it can be made into a circular shape, with high section utilization rate, convenient construction, low maintenance cost, not easy to block the bunker, and easy to use, but the lump coal breakage rate is high

(2) Inclined coal bunker: The crushing rate of lump coal is low, but the construction of the bunker body is difficult, the maintenance cost is high, the bunker is prone to blockage accidents, and it is inconvenient to use

(3) Horizontal coal bunker: there are many mechanical and electrical accidents, high transportation and storage costs, and few on-site use

(4) Mixed coal bunker: many twists and turns, inconvenient construction, easy to block the bunker, and the lump coal is easy to break, so it is rarely used on site

It is difficult for the above-mentioned coal bunkers to meet the requirements of not only convenient construction and use, but also the ability to increase the lump coal rate.

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