An automatic screening device for crushing coal gangue

Abstract

The invention provides an automatic sieving device for crushing coal gangues and belongs to the technical field of coal processing. The automatic sieving device for crushing the coal gangues comprises a feeding groove and a box body; the feeding groove is located on the box body; a first crushing roller and a second crushing roller are mounted at the lower end of the feeding groove; the first crushing roller is connected with a first hydraulic transmission device; the box body is internally provided with a vibration screen and a material receiving groove; the material receiving groove is located at the lower end of the vibration screen; a discharging hole is formed in a side face of the vibration screen; the discharging hole aligns to a first conveyor belt; the first conveyor belt is connected with a first driving mechanism; the box body is internally further provided with a first motor, a power transmission gear group and a reversing gear group; a second driving mechanism, a belt bracket, a second motor, a controller and a lifting mechanism are mounted outside the box body; the lifting mechanism is fixedly connected with a first steel wire rope and a second steel wire rope; the first steel wire rope and the second steel wire rope are connected with a material returning groove. According to the device provided by the invention, the crushing precision and sieving speed of the coal gangues can be adjusted according to requirements, the labor force is saved and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of coal processing, in particular to an automatic screening device for crushing coal gangue. Background technique [0002] At present, with the rapid development of society, human beings are increasingly dependent on nature, and their demand for energy is also increasing. For the coal industry, due to the considerable reserves of thin coal seams, the mining trend is already in full swing. However, due to the complex and unique structure of the thin coal seam, the ratio of coal gangue to coal in the mined coal rock can reach up to 1:3. Therefore, the secondary utilization of coal gangue has become the focus of attention of the country and many enterprises. . In recent years, the use of coal gangue mainly has three aspects: one is to recover coal and pyrite: through a simple process, the good coal is washed from the gangue, the inferior coal is selected from it by screening, and the pyrite is selected at the...

AI Technical Summary

Problems solved by technology

The above technologies have extremely high requirements on the crushing of coal gangue. At present, the crushing of coal gangue is carried out manually. This method makes the efficiency of coal gangue crushing low, and the labor intensity of workers is relatively high.

However, most of the existing crushing and screening machines in the market are large-scale equipment, and their crushing and screening accuracy for coal gangue is low, which is not conducive to the full utilization of coal gangue.

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