Air classifier works grader and cyclone dust collector, Fan consisting of a hierarchical system. The material in the fan pumping force down into the lower end of the spout by grader with updraft speed movement to the classification zone, under the strong centrifugal force generated by the turbine rotating at high speed grade, so that the thickness of the material separation, in line with the requirements of the fine particle size by grade round blade gap into a cyclone or dust collection, the role of gravity and centrifugal force coarse sinking, the rotor blades were thrown around and fell along the cylinder barrel, during landing but also by the impact of the secondary air flow, so coarse powder to break up the reunion and once again blown grading room, meal gravity discharged from the lower discharge valve. Air classifier Features 1. Vertical grade turbine unit, low speed, wear resistance, low system power configuration grader 2. Reasonable structure, size segments simultaneously produce multiple products, especially for 325 to 8,000 mesh (1.6 ~ 45 microns) large-scale industrial grade powder production 3. applicability, with ball mill, vibration mill, Raymond mill and other equipment used in series to form a closed loop system 4. vacuum operation, dust emissions of no more than 40mg / m, the device measures the noise through the use of silencers, not more than 75dB (A) 5. High degree of automation. The control system uses process control, real-time operating status display. Classifier impeller used in all levels of electronic inverter variable speed, automatic circulating dust collection boxes for electronic process control, automatic cleaning, air classifier to improve the stability of the whole vacuum applications 1. high hardness materials: silicon carbide, a variety of corundum, boron carbide, alumina, zirconia, garnet, zircon, diamond, etc. 2. Non-metallic Minerals: quartz, graphite, kaolin, calcium carbonate, mica, barite, mullite, stone, wollastonite, talc, pyrophyllite, etc. 3. Chemicals: aluminum hydroxide, silica, various dyes, epoxy resins, additives, etc. 4. Food and Medicine: pollen, hawthorn, pearl powder, Ganoderma lucidum, each species of vegetable powder, a variety of herbs, a variety of health care products, cosmetics, drugs such as antibiotics, 5. Metal material: aluminum, magnesium, zinc, tin powder, copper powder, etc. 6. Other materials: ceramic materials, refractory materials, electronic materials, magnetic materials, rare earth materials, phosphor, copy material powder