Coal-gangue multistage-separation system with impact mechanisms arranged on side wings of rubber belts

Abstract

The invention discloses a coal-gangue multistage-separation system with impact mechanisms arranged on side wings of rubber belts. The coal-gangue multistage-separation system with the impact mechanisms arranged on the side wings of the rubber belts comprises a grading conveying device and a coal-gangue separation device, wherein a roller screen frame arranged on the grading conveying device is installed at a coal outlet of a raw coal conveying system; a plurality of roller screens are installed on the roller screen frame; the diameters of rollers arranged on the roller screens are gradually increased from the feeding end to the discharging end, so that the roller screens roll to convey raw coal with different particle sizes to fall off from the roller screens; discharging ports of discharging hoppers are gradually increased by being matched with the sizes of the rollers of the roller screens, and coal blocking plates arranged on the coal-gangue separation device are installed at the discharging ports, so that the coal blocking plates are used for blocking the raw coal from falling onto belt conveyors below one by one from the discharging hoppers; a gangue conveying belt conveyor is installed below the belt conveyors; and a coal conveying belt conveyor is installed below the end parts of the belt conveyors. According to the coal-gangue multistage-separation system with the impact mechanisms arranged on the side wings of the rubber belts provided by the invention, raw coal with similar particle sizes can be placed on each grading conveyor belt in a straight line, so that coal and gangue separation can be realized conveniently; and secondly, the multiple impact mechanisms with the same power are used to prevent energy waste.

Description

technical field [0001] The invention relates to the technical field of coal mining equipment, in particular to a system in which an impact mechanism is arranged on the flanks of a belt and coal gangue is separated in multiple stages. Background technique [0002] Due to underground geological conditions, a large amount of gangue will be mixed in the coal seam. During the coal mining process, this part of gangue will be mined together; at the same time, during the production process of coal cutting, a small amount of gangue on the top and bottom plates will also be mined. At the same time mined out and mixed into the raw coal. The gangue produced above is all mixed in the mined raw coal, thereby greatly reducing the quality index of the raw coal; if these gangue can be separated from the raw coal, the quality of the raw coal can be greatly improved. [0003] The current relatively advanced coal gangue separation technology mainly uses the method of grabbing with a manipulato...

AI Technical Summary

Problems solved by technology

Therefore, there are many links in the process of grasping and the actuator is relatively complicated, resulting in a slow separation speed of grasping; and the robot hand and the machine puller will also encounter collisions with gangue on the conveyor belt during work.

Existing coal transportation equipment with hierarchical arrangement adopts multi-stage and multi-screen, resulting in waste of equipment and energy, high cost, complex structure and low efficiency

Therefore, there is an urgent need to design a system and working method in which the impact mechanism is arranged on the side of the belt and the coal gangue is separated in multiple stages, so as to solve the problems of complex mechanical structure and low work efficiency in the existing coal gangue separation equipment

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