Parameters

Structural design optimization

• Main structure optimization: 

The vortex casing, air guide blades and rotor structures are optimized by CFD engineering, so that the vortex in the powder selection area is more uniform and stable, the fluid resistance is reduced, and the material is ensured to be classified with high precision and high efficiency. This makes the movement of the material in the Powder Classifier more regular, and improves the accuracy and efficiency of powder selection.

• Improvement of the structure of the spreading plate: 

The spreading plate is modified to make the material fully and evenly dispersed in the entire circumferential sorting area. The more evenly the material is dispersed, the better the powder selection effect is, and the materials of different particle sizes can be separated more accurately.

• Improvement of the air inlet pipe form: 

The original multi-point air inlet mode of the tertiary air inlet pipe is changed to annular tangential air inlet, so that the secondary sorting effect of the tertiary air on the material sliding down the inner wall of the cone is significantly enhanced. This helps to reduce the content of qualified finished products, especially 3~30μm particles, in the regrinding material, thereby improving the particle size composition of the finished product and increasing the specific surface area and strength grade.

Transmission device improvement

• Reducer improvement: 

Imported hard-toothed reducer with sealing technology is selected. Its integrated lubricating oil design does not require an external lubricating oil station, simplifies the equipment structure, avoids oil leakage problems, and makes the equipment more reliable.

• Drive mode adjustment: 

The motor adopts the Y series variable frequency speed regulating motor, and the speed can be changed by the frequency converter, so that the motor speed can vary in a large range, so as to better meet the requirements of the powder classifier speed under different production conditions.

Internal wear-resistant treatment upgrade:

• Inner surface of the powder selection chamber: 

All inner surfaces of the powder selection chamber are pasted with wear-resistant ceramics, which improves the wear resistance of the powder selection chamber and reduces equipment failures and maintenance costs caused by wear.

• Key component materials: 

The spreading plate and baffle plate are made of medium wear-resistant white cast iron, which has high hardness and prolongs the service life; the wind guide blades and rotor blades are made of imported wear-resistant steel plates, with smooth surface and low resistance; the rotor support pipe is treated with wear-resistant surfacing, and the protective pipe is treated with carburizing and wear-resistant. These measures have improved the wear resistance of key components of the equipment.

Feeding device improvement

• Add pretreatment function: 

Some improved powder selectors have added a feeding device at the feeding end to perform secondary crushing on coarse powder materials with too large particle size, so as to facilitate the material to be fed into the feeding end of the powder selector body to realize powder selection operation. Such pretreatment can improve the smoothness of feeding, improve the powder selection efficiency, and obtain more fine powder.

• Speed limiting device: 

Some feeding devices are also equipped with a speed limiting device, which controls the speed of the rotating shaft through the action of centrifugal force to avoid the crushing and conveying effect of the material due to too fast or too slow speed, and ensure the stability of feeding.