Normal-temperature preparation method of isatis root submicron powder and special bidirectional airflow sieving machine used by same

Abstract

The invention discloses a normal-temperature preparation method of isatis root submicron powder, which comprises: airing isatis root which is a Chinese medicine, cutting the isatis root into sections, and drying till water content is less than or equal to 10 percent; grinding the cut isatis root at normal temperature to coarse powder of 60 to 80 meshes; grinding the coarse powder into a rod mill, feeding the powder into a special bidirectional airflow sieving machine by wind to sieve the powder with a 500-mesh sieve, delivering the undersize submicron powder with a particle size of less than or equal to 25 micrometers to a cyclonic material collection device by an air flow generated by a draft fan, and collecting finished isatis root submicron powder; and collecting oversize powder by using a funnel and delivering the powder to the rod mill via a pipeline to grind the powder again circularly. The method has the advantages that: the whole preparation process is carried out at normal temperature, and need of low-temperature or special additional conditions is obviated; the particle size of the prepared finished isatis root submicron powder is less than or equal to 25 micrometers, the cell wall breakage rate and bioavailability are improved greatly, and the pharmacological effect of the medicine is enhanced; and the used bidirectional airflow sieving machine simplifies the preparation process of isatis root submicron powder.

Description

technical field [0001] The invention relates to a veterinary drug additive, in particular to a method for preparing superfine powder Radix Radix at normal temperature; the invention also relates to a special two-way airflow sieving machine used in the method. Background technique [0002] With the continuous expansion of the scale of poultry and livestock breeding, the bacterial resistance caused by the extensive use of antibiotics has been increasing, which has become one of the problems of common concern all over the world. Due to the continuous increase in the use of antibiotics, the intestinal flora of poultry and livestock is disturbed, which is easy to aggravate the primary infection, and the metabolism of the liver and kidney of poultry and livestock is disturbed, and the residues are aggravated, which is harmful to human health. [0003] Chinese herbal medicine additives have the characteristics and advantages of naturalness, multi-functionality, and no toxic and sid...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing ultrafine powder Radix Radix at room temperature, which effectively solves the problems in the production of traditional Chinese medicines such as large energy consumption, difficulty in accurately controlling the maximum particle size of the drug, inability to continuously produce, and much dust in the production process, so that the prepared Radix Radix isatidis Ultrafine powder has the advantages of fast onset of action, good curative effect, high bioavailability, and less additive dosage

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