• 09 Oct, 2022
• By EPIC Powder
• 2 Comments

Advantages and Disadvantages of Different Sealing Methods of Air Flow Classifier

The air classifier is the key to the production of ultra-fine powder, because the particle size of the final product is controlled by the classifier. In addition to its cutting particle size, the classification efficiency is very important to measure the working quality of the air classifier. If the efficiency of air flow classifier is high, the quality of classified products will be good. The energy consumption of grinding operation can also be greatly reduced, and its processing capacity can be significantly improved< Br/>Air classifier is a kind of equipment that uses the centrifugal force of impeller rotation and the drag force generated by air flow to classify materials. The seal between the rotating cage rotor and the stationary housing is an important part of the structure of the eddy current air classifier, and the failure of the seal is an important reason for the coarsening of the product fineness or the mixing of some coarse particles in the finished product

Sealing method of air flow classifier:
, The gas consumption increases with time< Br/>(2) Mechanical seal
Mechanical seal can be divided into concave convex inlaid seal, adjustable clearance seal and labyrinth seal< Br/>The main principle of labyrinth seal is to control the seal clearance to ensure the sealing effect. However, because the clearance always exists, some coarse or even millimeter sized particles are directly mixed into the finished product without being sorted by the rotor. Therefore, the sealing effect of mechanical labyrinth seal in the ultra-fine classifier is not good< Br/>The differential pressure air classifier adopts the differential pressure air flow seal structure, which has the characteristics of high classification accuracy, energy saving, high efficiency and low production cost. It is widely used in the classification and purification process of quartz, feldspar, mica, kaolin, magnesium oxide, etc