Rock screw breaking-resisting coal bunker

Abstract

A rock spiral anti-breaking coal bunker, including an inlet diversion device, a coal feeder, a vertical cylindrical bin body is set on the rock between the upper and lower roadways, and the upper round hole of the bin body is provided with a belt inlet hole The lower end of the bin body is provided with a tapered hole, and the outlet at the bottom of the taper hole is equipped with a coal feeder. The coal feeder is excavated on the inner wall of the cylindrical rock of the bin body with a spiral concave inward. Groove, the upper part of the spiral groove communicates with the entrance of the sealing grate mounted on the round hole, the lower part of the spiral groove leads to the entrance of the coal feeder, and an inlet guide device is installed in the upper roadway. The invention has a good effect of preventing coal from being broken, has a low breaking rate, and has the function of preventing blockage of a circular vertical bin.

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

[0005] 1. Formwork is required to make reinforced concrete, and it needs to be prefabricated in the factory or cast on site. The manufacturing process is complicated, the construction period is long, the investment is large, and the cost is high

[0006] 2. The wear resistance of reinforced concrete is small and the service life is short

[0007] 3. After the reinforced concrete silo body and the screw groove are worn out, it cannot be repaired or regenerated, and can only be scrapped

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