Superfine powder sieve linkage system

Abstract

The invention discloses a superfine powder sieve linkage system. The superfine powder sieve linkage system comprises a swirling air pump, a feeding device, a first whirlwind collector, a first powder mixer, a supersonic airflow device, a turbine classifier, a double-airflow micro-powder sieve, a second whirlwind collector, a second powder mixer, a wind-proof laying-off device and a pulsed deduster. An air outlet of the pulsed deduster is communicated with a draught fan. A dust collection hood is arranged above a feed inlet of a hopper. The top of the dust collection hood is communicated respectively with the first whirlwind collector, the second whirlwind collector and the air outlet of the pulsed deduster by pipes. The superfine powder sieve linkage system satisfies requirements on superfine powder large-scale production of low-fiber content traditional Chinese medicines and other materials, improves screening efficiency, effectively controls a maximum particle diameter of a finished product, and realizes large-scale industrial screening processing of superfine powder above 500 meshes. In working, the superfine powder sieve linkage system utilizes an airflow produced by the draught fan to guide a material to be sieved, produces air-drying effects on the material, does not need additional drying equipment, and saves energy.

Description

technical field [0001] The invention relates to a traditional Chinese medicine micropowder screening system, in particular to an ultrafine powder screening 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 requirements on the drug ...

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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