Underground coal gangue multi-layer distributing and screening device based on layered vibration self-adaption

Through multi-layer screening components and an adaptive control system, efficient grading and screening of coal gangue in underground mines has been achieved, solving the problems of screening accuracy and efficiency of traditional equipment under changing operating conditions, and improving the adaptability and stability of the equipment.

CN122273791APending Publication Date: 2026-06-26CHINA UNIV OF MINING & TECH
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Patent Information

Application Number
CN202610714966.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-22
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing underground coal gangue screening devices have a narrow screening particle size range, non-adjustable vibration parameters, and lack a real-time feedback correction mechanism, resulting in low screening accuracy, loss of recovery rate, and inability to adapt to changes in geological conditions and coal mining process parameters. In particular, they are prone to clogging or reduced screening probability when the proportion of high-viscosity fine-particle materials increases or the feed rate is too large.

Method used

The system employs a multi-layer screening assembly, with the particle size decreasing progressively in each screening module. The drive assembly is independently controlled by a variable frequency vibration module, and the vibration frequency and amplitude of each module can be adjusted. Combined with real-time feedback from the detection module of the control assembly, a closed-loop adjustment mechanism is formed to achieve adaptive screening.

Benefits of technology

It improves the screening probability and overall screening efficiency of materials of different particle sizes, reduces the probability of coarse material passing through, enhances the adaptability and stability of the equipment, reduces the need for manual intervention, and reduces the labor intensity of underground workers.

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Abstract

The invention relates to the technical field of underground coal and gangue separation, in particular to an underground coal and gangue multi-layer distributing and screening device based on layered vibration self-adaption, which comprises a multi-layer screening assembly, a driving assembly and a control assembly, the multi-layer screening assembly is fixedly mounted on a rack, and the multi-layer screening assembly comprises a screening module longitudinally arranged on the rack; all the screening modules operate independently, and the screening particle sizes of the screening modules are gradually reduced from top to bottom; the driving assembly is fixedly mounted on the rack, and the driving assembly is in transmission connection with the screening module and provides screening power for the screening module; the control assembly comprises a control module and a detection module which are electrically connected, the control module is electrically connected with the driving assembly, and the detection module is used for detecting screening parameters of the coal gangue. According to the method, thick material layers are decomposed through multi-layer material distribution, vibration parameters of all the layers are configured in a differentiated mode, a real-time sensing and feedback adjusting mechanism is introduced, efficient and stable screening under the complex working condition is achieved, and clean utilization of coal is promoted.
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