Intelligent lump coal dry method inverted separation system

Abstract

The invention aims to provide an intelligent lump coal dry method inverted separation system. After supplied raw coal materials are screened through a raw coal classifying screen, raw lump coal enters an intelligent dry separation machine, and are identified by X-rays as clean coal, gangue and other things. The intelligent lump coal dry method inverted separation system is characterized in that conventional gangue blowing operation of intelligent dry separation is turned into coal blowing operation, and the intelligent dry separation machine enables an air spray nozzle which corresponds to the clean coal and is controlled by a high-frequency solenoid valve to be opened according to identifying information of the X-rays, so that the clean coal deviates from the raw coal movement trail, and the clean coal is separated from the gangue and the other things. The intelligent dry separation machine is a dry method separation device which utilizes the rays to conduct intelligent identifying separation on minerals, the clean coal and the gangue are identified according to the difference of the capacities of the clean coal and the gangue for absorbing the rays, and the air spray nozzle serves as an execution mechanism. According to the invention, the intelligent lump coal dry method inverted separation system can be applied to coal preparation plants with a large amount of gangue and a plurality of overlarge blocks and other things so that the problem that an existing conventional intelligent dry method gangue removal system is difficult to handle with overlarge blocks and other things can be solved, and the air consumption and the energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of dry method coal preparation, and in particular relates to an intelligent dry method reverse separation system for lump coal. Background technique [0002] Coal dry separation based on ray recognition has the advantages of no water, simple process, less investment and low production cost. Since 2005, this technology has gradually been applied in the coal industry, such as Shenhuo Liangbei Coal Mine, Beijing Muchengjian Coal Mine, etc. The existing coal gangue automatic sorting machine based on ray recognition, such as the coal gangue automatic sorting machine disclosed in Chinese patent CN101637765B, includes a raw material feeding hopper, a coal receiving hopper, a gangue receiving hopper, The conveyor belt conveyor between the coal and gangue receiving hoppers, the identification and sorting control mechanism and the execution mechanism, the identification and sorting control mechanism includes a gamma ...

AI Technical Summary

Problems solved by technology

Even if a high-frequency solenoid valve with a higher frequency is selected or the equipment selection of the air supply system is increased to adapt to this special situation, it will also increase the wind loss and energy consumption.

[0006] (2) It is difficult to deal with super large blocks

Due to the difference in hardness between coal and gangue, these super-large pieces are basically gangue. This part of super-large gangue has large volume, high density, and high quality. The injection force of the conventionally designed high-frequency electromagnetic valve is limited. It is more difficult to blow out in the medium

[0007] (3) Powerless against debris

If this part of debris is not separated and mixed in the coal, it will not only affect the quality of the product, but also cause consequences such as jamming the chute and winding the sprocket.

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