Long-distance double-shaft self-synchronous double-layer vibrating flip-flow screen

By designing a long-distance dual-axis self-synchronizing double-layer vibrating tension screen, efficient multi-stage screening of complex particle size wet fine materials is achieved, solving the problems of low screening efficiency and clogging in existing technologies. It is particularly suitable for raw coal grading and screening in the coal preparation process.

CN122124976APending Publication Date: 2026-06-02XUZHOU COLLEGE OF INDAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XUZHOU COLLEGE OF INDAL TECH
Filing Date
2026-03-24
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing linear vibrating screens are inefficient when screening wet fine materials with complex particle sizes. Single-layer screening is prone to clogging, and the forced synchronous excitation device causes gear wear and stress concentration on the side plates, which cannot meet the screening requirements of the coal preparation process.

Method used

The system employs a long-distance dual-axis self-synchronizing double-layer vibrating tension screen. Through the design of the excitation device, the front and rear excitation devices form a spatial inclined plane to achieve self-synchronizing operation. The floating screen frame and the fixed screen frame move alternately. Combined with the different apertures and flexible structures of the upper and lower screens, multi-stage screening is achieved.

Benefits of technology

It improves the screening rate of moist fine materials and reduces the clogging rate, making it suitable for raw coal grading and screening in the coal preparation process, thus improving screening efficiency and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a long-distance dual-axis self-synchronizing double-layer vibrating tension screen, comprising an excitation device, an upper coarse-pore screen, a fixed screen frame, a floating screen frame, and a lower fine-pore flexible screen. The excitation device includes a rear excitation device mounted on a side plate corresponding to the feed inlet and a front excitation device mounted on the side plate corresponding to the fine slag outlet. The line connecting the central axis of the drive shaft of the front excitation device and the central axis of the drive shaft of the rear excitation device forms a spatial inclined plane, and the angle between the spatial inclined plane and the upper coarse-pore screen ranges from 20° to 45°. The center of mass of the entire screen body is located within the spatial inclined plane, and the distance between the central axis of the drive shaft of the front excitation device and the center of mass of the entire screen body is the same as the distance between the central axis of the drive shaft of the rear excitation device and the center of mass of the entire screen body. This invention can achieve dry screening of moist fine-grained materials with complex particle size distribution, and is particularly suitable for raw coal grading and screening in coal preparation processes.
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