Ultrafine grinding machine particularly suitable for Chinese herbal medicine and bio-engineering industry ultra-fine powder. The device's features are as follows: 
 1, it is reflective of a vertical mill, it could also complete the powder grinding and sorting of the two powder processing operations; 
 2, air flow control valve with impeller stepless speed regulation and classification, do not stop to control the fineness of the product, the new pulse cleaning dust bag to collect more than 1um powder, powder full recovery, no pollution of the environment; 
 3, it has a cooling function, crushed when the temperature is low (if any special needs, may be an additional payment of the deepest water cooling structure), especially suitable for processing of fibrous materials (such as herbs, chitin, cellulose and other bio-engineering materials), the basic fiber of Chinese herbal medicine to overcome the strong, sensitive materials and bio-engineering products easy to stick the increase of the temperature problem of destruction of active ingredients, uniform particle size, narrow distribution. 
 Grinding fineness of the device has reached 1um - 300um. To normal continuous grinding, production of 50 kilograms per hour - 3000 kg.