1. The high-efficiency three-part classifier divides the material into three parts: coarse powder (D > 150um), medium-coarse powder (60um < D < 150um) and fine powder. The coarse powder returns to the first bin, the medium coarse powder is sent to the grinding bin of the mill through the high-speed reamer (or it can enter the first bin with the coarse powder), and the fine powder, that is, the finished product, is directly transported to the warehouse.
2. Compared with centrifugal, cyclone and rotor classifier with similar size, Sepax high-efficiency three-point classifier has much higher output, so it is more suitable for mass production. The advanced and reasonable structure makes the air volume, output and powder feeding rate of the classifier change widely without affecting the efficiency of powder selection, and the classification performance is very stable.
3. The classification principle of efficient three-point classifier is put forward. Combined with various powder selection principles, the whole flow field is optimized by aviation aerodynamics analysis method, which significantly reduces the equipment resistance and improves the powder selection efficiency. Energy saving and consumption reduction are very obvious. The rotor of the classifier is equipped with an eddy current rectifier which has won the national patent. The airflow in the rotor only rises and does not rotate relative to the rotor. After the airflow enters the rotor, the driving force on the rotor is reduced due to the moment of momentum, which saves the driving power and reduces the wear. The classification accuracy is higher and more accurate by selecting materials in the powder selection area twice.
4. The spindle of high-efficiency three-point classifier adopts stepless high speed. The fineness adjustment is convenient, sensitive and reliable, and the adjustment range is wide.
5. The efficient three-point classifier re-optimizes the spatial range of the powder selection area and the lifting area, makes full use of the main space, increases the material-gas ratio and improves the powder selection efficiency.
6. Wear-resistant materials or wear-resistant technology are used to treat the vulnerable and wear-resistant parts of high-efficiency three-point classifier, such as distributor, cyclone, screw angle, air guide blade and rotor, with extremely low wear rate. The use of new manganese plate effectively prolongs its service life.
7. The new design scheme is adopted for the lower bearing seal of the high-efficiency three-point classifier spindle, which effectively solves the two major problems of bearing dust entry and lubricating oil leakage, and effectively prolongs the service life of the lower bearing.
8. When designing the foundation of high-efficiency three-point classifier, the principle of mechanical vibration reduction is adopted, so that the vibration frequency of classifier and foundation is not close to the natural frequency of classifier, which fundamentally solves the vibration problem of classifier that has troubled users for a long time.
9. The coarse powder tube, medium coarse powder tube and fine powder tube of the high-efficiency three-point classifier all adopt double interlocking air valves, which greatly reduces the air leakage rate of the system and overcomes the defect of large dust in the operation of the classifier in the past.