A multi-stage fine filtration device for pharmaceutical powder formulations

By combining multi-stage screening and dispersion components, the drug powder is gradually filtered from coarse to fine, solving the problem of insufficient filtration accuracy in existing devices, improving filtration efficiency and purity, and meeting the stringent requirements for drug quality.

CN224629298UActive Publication Date: 2026-08-14HOHHOT ZHONGMENG HOSPITAL
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Patent Information

Application Number
CN202521642860.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-04
Publication Date
2026-08-14
Estimated Expiration
2035-08-04

AI Technical Summary

Technical Problem

Existing pharmaceutical powder formulation filtration devices are unable to achieve multi-stage filtration and cannot effectively remove impurities of different particle sizes, resulting in filtration precision that cannot meet the needs of modern pharmaceutical manufacturing.

Method used

The design combines multi-stage screening components and dispersion components. The multi-stage screening components are driven by rotational motion to vibrate and screen. The multi-stage screening structure is formed by equally spaced filter hoppers, and the dispersion components ensure that the powder is evenly dispersed to avoid accumulation. The vibration design of pressing columns and springs prevents clogging.

Benefits of technology

It enables stepwise fine filtration of drug powder from coarse to fine, improving filtration accuracy and efficiency, ensuring the purity and particle size distribution of the powder, solving the problems of easy clogging and low efficiency of traditional devices, and meeting the strict requirements of drug quality.

✦ Generated by Eureka AI based on patent content.
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Abstract

This utility model discloses a multi-stage fine filtration device for pharmaceutical powder preparations, relating to the field of pharmaceutical powder preparation fine filtration technology. It includes a tank, inside which is a multi-stage sieving assembly for fine filtration of pharmaceutical powder; the tank also includes a dispersing assembly to facilitate uniform fine filtration of the pharmaceutical powder. The rotational motion of the dispersing assembly drives the multi-stage sieving assembly to vibrate and sieve up and down. A feed pipe is fixedly connected to the top outer wall of the tank, and a support base is fixedly connected to the bottom outer wall of the tank. This utility model achieves gradual fine filtration of pharmaceutical powder from coarse to fine through the multi-stage sieving assembly to improve filtration accuracy. The dispersing assembly uniformly disperses the powder and drives the sieving assembly to vibrate, thereby improving sieving efficiency. Furthermore, the structure is rationally designed, combining practicality and stability.
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