A vibrating sieve device for multi-layer screening of impurities in Chinese medicinal materials

By introducing anti-clogging components such as rubber balls and limit frames into the multi-layer vibrating screen, the problem of screen hole clogging was solved, achieving stable screening of medicinal materials and dust control, and improving screening efficiency.

CN224423518UActive Publication Date: 2026-06-30HEBEI PROVINCIAL VETERANS GENERAL HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI PROVINCIAL VETERANS GENERAL HOSPITAL
Filing Date
2025-07-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

When screening Chinese medicinal materials, existing multi-layer vibrating screens tend to accumulate damp fine powder and sticky substances into clumps, causing blockage of the top screen holes, which affects the falling of qualified medicinal materials and screening efficiency.

Method used

An anti-clogging component, including a rubber ball and a limiting frame, was designed. The elasticity of the rubber ball is used to knock and clean the top screen, and the limiting frame prevents clogging. At the same time, an anti-overflow cover and a torsion spring are used to prevent dust from escaping.

Benefits of technology

It effectively avoids sieve clogging, ensures stable falling of medicinal materials and sieving efficiency, prevents dust from escaping, and improves sieving effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of vibrating sieving devices, and in particular to a multi-layer vibrating sieving device for screening impurities in Chinese medicinal materials. It includes an anti-clogging component, a rotary vibrating screen body, an upper frame at the top of the main body, a limiting component at the top of the upper frame, a top-layer screen for initial screening of impurities fixedly installed inside the upper frame, rubber balls for cleaning the screen holes at the top of the top-layer screen, a limiting frame for limiting movement inside the upper frame, and a discharge port fixedly installed outside the upper frame. Through the rubber balls and the limiting frame, the elasticity of the rubber balls causes them to bounce back and forth with the vibration of the rotary vibrating screen body. Under the limitation of the limiting frame, the rubber balls reciprocate to strike the top-layer screen, effectively cleaning the filter holes of the top-layer screen, preventing the sieving efficiency from being affected, and ensuring the stability of the qualified medicinal materials as they fall through the screen.
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