Multi-stage screening device for commercial concrete production

By designing a multi-stage screening frame and intercepting net, the problem of traditional screening equipment being unable to meet the screening of multiple aggregate specifications is solved, realizing the fine grading and efficient screening of commercial concrete aggregates, preventing screen blockage, and improving production quality and efficiency.

CN224181350UActive Publication Date: 2026-05-01XINJIANG QUNYING CONCRETE CO LTD
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Patent Information

Application Number
CN202521379627.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-02
Publication Date
2026-05-01
Estimated Expiration
2035-07-02

AI Technical Summary

Technical Problem

Traditional single-stage screening equipment cannot meet the simultaneous screening needs of multiple aggregate sizes in commercial concrete production, and fine aggregates are prone to clogging the screen holes during the screening process, resulting in poor screening effect.

Method used

The multi-stage screening structure, which employs a two-layer screening frame and a bottom intercepting net, combined with the design of a spring frame and an electrically driven rotating rod, achieves multi-stage particle size classification and prevents clogging through the buffering effect of the spring frame and the reciprocating motion of the intercepting net.

Benefits of technology

It enables precise grading of commercial concrete aggregates, improves screening efficiency and accuracy, reduces equipment maintenance frequency, prevents screen clogging, and ensures smooth production processes.

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Abstract

The utility model relates to the technical field of commercial concrete production equipment, in particular to a multi-stage screening device for commercial concrete production, which comprises a screening box which is of a rectangular box structure, one side of the screening box is connected with a closing cover in a clamping manner, two layers of screening frames are vertically placed in the screening box, and the two layers of screening frames are connected with the closing cover in a clamping manner. An intercepting net is slidably connected to the bottom end of the screening box, and the intercepting net and the screening frame form a screening structure for commercial concrete production. According to the multi-stage screening type screening device for commercial concrete production, a three-stage screening structure is formed through the two layers of screening frames and the bottom intercepting net, the pore diameter of the upper-layer screening net is large, the pore diameter of the middle-layer screening net and the pore diameter of the middle-layer intercepting net are minimum, refined grading of commercial concrete aggregate is achieved, and on one hand, the production requirements of concrete of different grades are met; and the screening frame is obliquely arranged and staggered with the inclined direction of the splitter plate I, so that the retention time of the materials on the screen surface is prolonged, the materials are fully dispersed and are in contact with the screen, and the screening efficiency is improved.
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