Coal crushing and screening machine for coal preparation

Abstract

The invention belongs to the technical field of coal mine devices, and in particular relates to a coal crushing and screening machine for coal preparation. Comprising a coal block crushing mechanism, a coal block screening mechanism and a control system, the coal block crushing mechanism is used for crushing coal blocks, and the coal block screening mechanism is used for size screening of crushed coal blocks; The coal block crushing mechanism includes a first crushing mechanism and a second crushing mechanism arranged in mirror images, the upper mirror images of the first crushing mechanism and the second crushing mechanism are provided with a connecting piece connecting the two, and the first crushing mechanism The lower mirror image of the mechanism and the second crushing mechanism is provided with an adjusting member for adjusting the distance between the first crushing mechanism and the second crushing mechanism. The technical solution is used to solve the problem that the crushing specifications of the coal block crushing device are single, and the coal block screening device has incomplete screening specifications for the coal block, resulting in the problem that the coal block needs to be further processed in the subsequent use process.

Description

Technical field [0001] The invention belongs to the field of coal mining equipment technology, and in particular involves a coal block crushing and screening machine for coal preparation. Background [0002] Both domestic and industrial coal occupies an irreplaceable position, but the coal just found out from the mine is a large block, and it is necessary to crush the large piece of coal, and the crushed coal should be classified according to the size for life or industry. [0003] In the prior art, the coal crushing device after crushing the coal block is usually a specification, can not be adjusted, resulting in the crushed coal block in the subsequent use of the need for further crushing according to the use of the use of further crushing. [0004] The existing screening device for coal mining still has certain defects in use, because the volume of coal after crushing is generally uneven, there are large and small, when screening, the specifications of the screening are not co...

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned technologies, the object of the present invention is to provide a coal crushing and screening machine for coal preparation, which is used to solve the single crushing specifications of the coal crushing device in the prior art, and the coal screening device can screen the coal. The specifications are not comprehensive, causing the problem that the coal block needs to be further processed in the subsequent use process

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