Coal dust screening device

By designing a combination of filter barrel, adjusting collar and crushing rod for the coal powder screening device, active crushing of large coal pieces and adjustment of screening particle size are achieved, solving the problems of clogging and low efficiency of existing devices, and improving production efficiency and equipment reliability.

CN224486649UActive Publication Date: 2026-07-14INNER MONGOLIA RONG XUXING ENVIRONMENTAL PROTECTION TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
INNER MONGOLIA RONG XUXING ENVIRONMENTAL PROTECTION TECH DEV CO LTD
Filing Date
2026-06-10
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing coal powder screening devices have low screening efficiency and are prone to clogging when processing coal containing large or hard lumps, resulting in reduced output, increased downtime frequency, and higher labor costs.

Method used

A coal powder screening device was designed, comprising a filter barrel, an adjusting collar, a rotating shaft, a crushing rod, a gear transmission system, and an adjusting mechanism. The rotating shaft is driven to rotate in reverse by a motor to achieve active crushing and avoid coal block jamming. The screening particle size is adjusted by adjusting the adjusting collar and the filter hole structure.

Benefits of technology

It improved the coal powder yield, reduced the frequency of shutdowns for cleaning, lowered energy consumption and labor costs, ensured the continuity and efficiency of the screening process, and extended the service life of the equipment.

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Abstract

This application provides a coal powder screening device, relating to the field of coal powder screening, including a filter barrel. The surface of the filter barrel has first filter holes, and an adjusting ring is slidably fitted onto the outside of the filter barrel. The surface of the adjusting ring has second filter holes adapted to the first filter holes, and an adjusting mechanism is provided on the surface of the adjusting ring. This application achieves active crushing and anti-clogging functions during the screening process through the cooperation of the filter barrel, adjusting ring, rotating shaft, first crushing rod, second crushing rod, first gear, second gear, protective cover, teeth, fixing ring, L-shaped fixing rod, motor, and other structures. The motor drives the rotating shaft to rotate in the opposite direction to the filter barrel, causing the first and second crushing rods to move alternately, effectively crushing large and harder coal pieces, preventing coal from getting stuck in the screen holes, significantly improving coal powder yield, reducing downtime for cleaning, and lowering energy consumption and labor costs.
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