Method for preparing ultrafine powder Qiangzhuang San at normal temperature and special bidirectional airflow sieving machine

Abstract

The invention discloses a method for preparing ultrafine powder Qiangzhuang San at normal temperature, which comprises the following steps of: selecting Chinese herbal medicine decoction pieces such as pilose asiabell root, medicated leaven, malt, stir-fried hawthorn fruit, astragalus, tuckahoe, largehead atractylodes rhizome and katsumade galangal seed; cleaning, and drying until water content is less than or equal to 10 percent; grinding the Chinese herbal medicines at normal temperature to obtain coarse powder with the particle size of 60 to 120 meshes; uniformly mixing the obtained coarsepowder in a ratio, putting into a rod mill for grinding, feeding into a special bidirectional airflow sieving machine through air, sieving with a 500-mesh screen, conveying powder which is obtained by sieving and has the particle size of less than or equal to 25 micrometers to a cyclone collector through airflow generated by a draught fan, and collecting to obtain a finished ultrafine powder Qiangzhuang San product; and collecting powder which does not pass through the 500-mesh screen by using a funnel, conveying to the rod mill through a pipeline, and performing cyclic grinding. The method has the advantages that: the whole preparation process is performed at normal temperature, the particle size of the prepared finished product medicine is less than or equal to 25 micrometers, and the cell wall breaking rate and bioavailability are greatly improved; and by the bidirectional airflow sieving machine used in the method, the preparation process for the ultrafine powder Qiangzhuang San is simplified.

Description

technical field [0001] The invention relates to the field of veterinary drug preparations, in particular to a method for preparing superfine powder Qiangqiang powder at normal temperature; the invention also relates to a special two-way airflow sieving machine used in the method. Background technique [0002] The main functions of Qiangqiang powder are to replenish qi and invigorate the spleen, digest food and dissolve food, that is, to regulate gastrointestinal function, promote digestion and absorption, and enhance immunity. At present, most of the Qiangqiang powders used in livestock are coarsely crushed powders, which have the disadvantages of large doses, coarse dosage forms, poor appearance, incomplete release of active ingredients, and low bioavailability, which seriously affect the quality and therapeutic effect of traditional Chinese medicines. [0003] Traditional Chinese medicine ultrafine pulverization technology is an update and development of traditional pulver...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing superfine powder Qiangqiang powder at room temperature, which effectively solves the problems of high energy consumption, difficulty in precise control of the maximum particle size of the drug, inability to continuously produce, and much dust in the production process in the current production, so that the prepared The finished drug has the effects of quick onset, good curative effect, high bioavailability, and less clinical dosage

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