Normal temperature preparation method of ultra-micro insecticide powder and special bidirectional airflow sieving machine therefor

Abstract

The invention discloses a normal temperature preparation method of ultra-micro insecticide powder. The preparation method comprises the following steps: 1, weighing decoction pieces of Pructus Carotae, Areca catechu, Fructus Ulmi Macrocarpae Preparatus, Omphalia, Rhizoma Dryopteris Crassirhizomae, dry ginger, processed Radix Aconiti Lateralis Preparata, Dark Plum Fruit, Rheum officinale, Stemona sessilifolia and Common Vladimiria Root and raw materials of Quisqualis indica, Medicine Terminalia Fruit and Chinese torreya according to certain proportions, drying above materials, and crushing thematerials into coarse powders; 2, extracting oil from Quisqualis indica, Medicine Terminalia Fruit and Chinese torreya; 3, mixing other coarse powders and medicinal residue, crushing the obtained mixture in a rod mill, sieving by a 500 mesh sieve through allowing the obtained crushed mixture to enter a special bidirectional airflow sieving machine through air blowing, conveying the powder which goes through the sieve through the airflow generated by a draught fan to a cyclone collecting machine, and collecting to obtain ultra-micro insecticide powder; 4, collecting the powder which does not go through the 500 mesh sieve by a funnel, and carrying out cycle crushing by conveying the collected powder to the rod mill through a pipeline; and 5, fully and uniformly mixing the ultra-micro insecticide powder obtained in step 3 with Quisqualis indica oil, Medicine Terminalia Fruit oil and Chinese torreya oil to obtain the finished ultra-micro insecticide powder. The preparation method has the following advantages: the whole preparation process is carried out at normal temperature, and the bidirectional airflow sieving machine used in the invention simplifies the preparation method of the ultra-micro insecticide powder.

Description

technical field [0001] The invention relates to the field of veterinary drug preparations, in particular to a normal-temperature preparation method of superfine powder Quchong powder; the invention also relates to a special two-way airflow sieving machine used in the method. Background technique [0002] Chinese herbal medicine has incomparable advantages over other chemically synthesized drugs in the prevention and treatment of diseases: high safety, less toxic and side effects, more active ingredients, less harmful residues, more targets of action, can play a combined effect, and is not easy to produce drug resistance It can regulate the body's immunity and enhance the body's disease resistance while antibacterial and antiviral. Under the background that countries around the world are increasingly emphasizing food safety and calling for green and ecological conditions, it is of great practical significance to promote the application of traditional Chinese veterinary drugs ...

AI Technical Summary

Problems solved by technology

At present, Quchong powder used for livestock and poultry is mostly coarsely crushed powder, which has the disadvantages of large dose, coarse dosage form, and poor appearance. Moreover, it cannot be evenly mixed with pellet feed, and cannot be directly added to drinking water for use.

[0004] Traditional Chinese medicine ultrafine pulverization technology is an update and development of traditional pulverization technology. It not only retains the advantages of traditional Chinese medicine preparation technology, but also injects new vitality into the modern production of Chinese medicine. It has broad application prospects, but there are still some problems in actual production. Problems and problems: (1) Low production efficiency and high energy consumption are the main factors restricting the large-scale production of veterinary traditional Chinese medicine ultrafine powder

In the traditional closed-circuit crushing process of the rod mill, when most of the materials have reached the fineness requirement, there is always a small part of coarse powder mixed in it, and the crushing time needs to be greatly extended to further crush this part of the coarse powder to the required particle size , so that the crushing efficiency is reduced, and the energy consumption is greatly increased; (2) There is a difference in particle size uniformity of the material after classification in winnowing classification and classifying wheel classification, which greatly affects the production quality of Chinese veterinary drug compound superfine powder, especially in the application of animal When using drinking water, it is difficult to meet the usage requirements due to the existence of a small amount of unbroken cells

(3) In the traditional unidirectional airflow screening, when Chinese medicine is ultrafinely pulverized, as the particle size decreases, the surface area and surface energy of the material particles increase, the adsorption increases, the fluidity becomes poor, and it is easy to aggregate into large particles It is difficult to sieve and classify powders with a fineness of more than 200 mesh

Images