coal crushing and screening machine

Abstract

The invention discloses a coal crushing and screening machine. The coal crushing and screening machine comprises a rack (1), and is characterized in that a vibration screening machine (2) is arranged on the rack (1); a crusher (3) and a vibration screen (6) are arranged on the upper portion of the vibration screening machine (2); coal passes through the vibration screen (6) to be screened for the first time and then enters the crusher (3) to be crushed; and after coming out of the crusher (3), the coal directly falls into the vibration screening machine (2) to be screened for the second time. According to the coal crushing and screening machine, the coal is screened two times, the coal obtained after preliminary screening enters the crusher to be crushed, and the crushing quantity can be reduced; the crusher and the screening machine are of an integrated structure, and belt transport is not needed in the middle; the coal directly coming out of the crusher is mixed uniformly, and the screening effect is good; and through the arrangement of a first rubber sleeve and a second rubber sleeve, it can be guaranteed that no dust flies in the work process.

Description

technical field [0001] The invention relates to the technical field of coal processing, in particular to a coal crushing and screening machine. Background technique [0002] Coal is the main source of energy for people's lives. It brings energy to our lives. In the process of coal mining, coal crushing, screening and drying are essential operations. The smaller the coal, the more fully it can be burned. High, in some combustion furnaces, the size of the coal is required to be high, so it needs to be screened. The coal in the prior art is first crushed and then screened. The coal is transported from the crusher to the vibrating screen by belt transport Screening, this kind of crushing and screening method is time-consuming, low in efficiency, and high in cost. In the prior art, the coal is uniformly fed into the crusher for crushing, but some coal in the raw coal is already finely crushed, and there is no need to crush all the coal. It is sent to the crusher for screening, w...

AI Technical Summary

Problems solved by technology

[0002] Coal is the main source of energy for people's lives. It brings energy to our lives. In the process of coal mining, coal crushing, screening and drying are essential operations. The smaller the coal, the more fully it can be burned. High, in some combustion furnaces, the size of the coal is required to be high, so it needs to be screened. The coal in the prior art is first crushed and then screened. The coal is transported from the crusher to the vibrating screen by belt transport Screening, this kind of crushing and screening method is time-consuming, low in efficiency, and high in cost. In the prior art, the coal is uniformly fed into the crusher for crushing, but some coal in the raw coal is already finely crushed, and there is no need to crush all the coal. It is sent to the crusher for screening, which wastes resources and reduces the efficiency. The crushers in the prior art generally only crush the coal through the crushing rollers in the crushing barrel, and the crushing effect is not very good, and it is difficult to obtain grains. Coal with a very uniform diameter, and the vibrating screen in the prior art

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