Chinese medicine ultrafine powder screening linkage system

Abstract

The invention discloses a Chinese medicine ultrafine powder screening linkage system. The system comprises a feeding device, a double-cylinder rod mill, a double air flow micro powder screening machine, two cyclone collectors and a pulse dust collector, wherein a discharge hole of the double-cylinder rod mill is communicated with a mixed powder inlet pipe of the double air flow micro powder screening machine through an electric pneumatic valve; a fine powder discharge hole of the double air flow micro powder screening machine is communicated with the other cyclone collector; a discharge hole of the cyclone collector is communicated with a feed inlet of the other powder mixing machine through a closed air discharger; and the top of the cyclone collector is communicated with an air inlet ofthe pulse dust collector through a pipeline. The system has the advantages that: the system is suitable for grinding a single cellulose-rich Chinese medicinal material or mixed cellulose-rich Chinesemedicinal materials; the double-cylinder rod mill is connected with the double air flow micro powder screening machine, so that screening efficiency is improved, and the maximum particle size of a finished product is effectively controlled; therefore, ultrafine powder with the particle size of more than 500 meshes is subjected to large-scale industrial production.

Description

technical field [0001] The invention relates to a traditional Chinese medicine fine powder sieving system, in particular to a traditional Chinese medicine superfine powder sieve linkage system. Background technique [0002] Traditional Chinese medicine ultrafine pulverization technology refers to the process of crushing the Chinese medicine powder with a diameter of more than 3mm to 10-15μm by mechanical or hydrodynamic means for the purpose of breaking the cell wall of the plant medicinal material (the cell wall breaking of the general medicinal material under this particle size condition rate greater than 95%). Its working principle generally includes impact, collision, friction, shearing, grinding and simultaneous fracture of traditional Chinese medicine powder. At present, mechanical pulverization and airflow sieving classification are commonly used in the preparation of traditional Chinese medicine ultrafine powder. Because traditional Chinese medicine has special req...

AI Technical Summary

Problems solved by technology

Because traditional Chinese medicine has special requirements on the drug and the part where it is used, the current commonly used air-feeding direct pulverization method is easy to separate the components of traditional Chinese medicine, which cannot meet the quality requirements of the product.

The airflow sieving classification method is a new type of classification method. The biggest advantage of the airflow sieving machine is to use the airflow carrying the powder to impact through the screen for effective separation, but for some micron-sized materials with light weight and small particle size Sometimes it will accumulate on the screen to form agglomerates, which will cause the screen to be blocked, resulting in the failure of the screening work, which greatly affects the screening efficiency and cannot meet the needs of large-scale industrial production.

Although the multi-stage ultra-fine classification technology is currently an effective method to achieve fine powder classification and reduce energy consumption, the equipment occupies a lot of space and personnel investment, and is not suitable for continuous large-scale production

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