The production principle of the jet mill is mainly to crush the object by high-speed airflow impact. The crushing forms mainly include collision type, target type, fluidized bed type and the like. Widely used in chemical, mineral, metallurgy, abrasives, ceramics, refractory materials, medicines, pesticides, food, health products, new materials and other industries. Tuya Video Doorbell,Smart Doorbell Night Vision,Night Vision Doorbell,Camera Wireless Doorbell Shenzhen Zuomi Technology Co., Ltd. , https://www.nbbkvis.com
Compared with ordinary mechanical ultrafine pulverization, jet milling can pulverize the product very finely, and the particle size distribution range is narrow, that is, the particle size is more uniform. Moreover, because the gas expands at the nozzle to cool down, the pulverization process is not accompanied by heat, so the pulverization temperature rise is very low. This property is particularly important for ultrafine pulverization of low melting point and heat sensitive materials.
Experts said that the airflow pulverization technology is an advanced pulverization technology, and its application in the fine processing of traditional Chinese medicine has just started, and there are still many problems.
Airflow pulverization and grading technology is an ultra-fine pulverization technology that has developed rapidly in recent years. It has the advantages of large pulverization strength, fine particle size, narrow distribution, and low product pollution. It is prepared in medicine, chemical raw materials and special powders. The aspect has been widely used. 
Application of airflow pulverization and grading in the production of silicon carbide micropowder (1) Airflow pulverization The principle of jet pulverization is to pulverize particles by impact collision, friction and shear between particles or particles and under high-speed airflow. Airflow crushing has the following characteristics:
1 high-speed airflow will produce high speed on the particles, the impact strength of the particles is large, and ultra-fine powders of micron or even sub-micron level can be obtained;
2 granule products have high purity and low pollution;
3 The obtained product has a narrow particle size distribution, a smooth particle morphology and good particle dispersibility;
4 The airflow from the nozzle is reduced due to the throttling effect and can be used to pulverize heat sensitive materials. 
(2) Principle of airflow grading airflow classification: Under the action of wind turbine suction, the material is moved from the lower end of the classifier to the grading zone with the ascending airflow at high speed, and the coarse and fine materials are separated under the strong centrifugal force generated by the high-speed rotating grading turbine. The fine particles meeting the particle size requirements are collected into the cyclone or the dust collector through the gap of the grading wheel blades. The velocity of the fine particles entrained in the fine particles collides with the wall, and the velocity disappears along the wall of the cylinder to the secondary air outlet. The panning action separates the coarse and fine particles, the fine particles rise to the classification zone for secondary classification, and the coarse particles fall to the discharge port for discharge. What are the important factors that need to be grasped when the "superfine pulverizer" chooses the Chinese medicine ultrafine pulverizer?