Adjustable solid material continuous feeding and discharging grinding method and device

Abstract

The invention discloses an adjustable solid material continuous feeding and discharging grinding method and device. A feeding shaft is driven by a driving mechanism to rotate, a feeding strip on the feeding shaft coarsely crushes materials entering a shell, and then the coarsely crushed materials are fed into a grinding disc and an adjustable grinding disc through feeding holes; and the materialsare further crushed through relative rotation of the grinding disc and the adjustable grinding disc. The adjustable solid material continuous feeding and discharging grinding method and device provided by the invention are applied to the preparation process of coal or mineral particles and used for obtaining the coal or mineral particles with a certain particle size. Collision between metal objects is avoided in the preparation process of a coal sample, and the device is small in size, low in noise in the working period and high in sample preparation efficiency. By accurately adjusting the distance between grinding faces, collision between the grinding faces is avoided, and meanwhile the maximum particle size of ground material particles can be accurately controlled.

Description

technical field [0001] The invention relates to crushing, grinding or crushing equipment, in particular to a grinding method and device for coal or mineral particles. Background technique [0002] In the process of coal analysis and detection, it is usually required to prepare a certain quality of coal samples to a specific particle size. The Chinese invention patent with the publication number CN109499731A discloses an automatic grinding machine applied to ore or coal raw materials. It consists of a lifting and conveying component used in conjunction with a vibrating grinding component used in conjunction with the lifting and conveying component, and a material receiving component used in conjunction with the vibrating grinding component. The beneficial effect of the automatic grinding machine applied to ore or coal raw materials of the present invention is that its design is reasonable, and the crushing assembly, rotating shrinking assembly, lifting and conveying assembly...

AI Technical Summary

Problems solved by technology

[0003] The existing crushing and grinding equipment, including the above two patented technologies, all have the problems of large volume, cumbersome operation, collision between metals in the sample preparation process, huge noise, obvious heat generation, and excessive crushing

The huge noise in the sample preparation process has a certain impact on the hearing health of the personnel; the metal collision in the sample preparation consumes a lot of energy, and the temperature of the sample rises significantly, which may affect the quality of the coal and affect the accuracy of the analysis results; The particle size control of the traditional sample preparation method is inaccurate, often in order to ensure the sieving rate of the prepared sample, there is a phenomenon of excessive crushing

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