Powder Separator

Working Principle

1.The raw material is fed into the separator from the hopper and directly falls on the combined-spiral-blade scattering disk integrated with rotor; those material can be scattered around due to the centrifugal force created by the high speed rotation of scattering disk, and also raised by the lifting air flow produced by the blade at the same time, so there will be constant mixed-boiling in the space, those fine particle will be floated in the space, but those coarse and heavy material will be separated by scattering disk and fall through the

wall, the primary separation is completed.

2.Lower cage-rotor is installed below the scattering disk, it can be rotated along with main shaft and produce vortex air flow, those heavy or coarse material and powder falling through the wall can be broken up, those fine powder will be lifted up and come into the recirculating wind for re-gradation; the coarse powder will be discharged from the inner cone body through a drip device.

3.Upper cage-rotor is installed above the scattering disk. In the powder separating chamber, the air flow near the surface of grading ring of upper cage-rotor and those material mixed in the air flow will rotate at a high speed driven by grading ring, so there will be an uniform and powerful vortex air flow produced around the grading ring; the centrifugal force can be reached by adjusting governing speed motor and main shaft, when RPM increases, the force will increase, if the air quantity doesn’t change, the material diameter to be cut will be small and fine, otherwise, coarse. Therefore, the granularity (fineness) can be flexibly controlled according to specified procedure, grading quality is improved and separating efficiency is enhanced.

4.Those fine powder graded by upper cage rotor will come into each single whirlwind dust collector together with the circulation air, two air outlets are installed on the new collector and an air guide plate is added to the snail angle of air inlet, also there is a reflection shield added to the inner conical tube, one air brake is added to the lower end of whirlwind drum liner, so the flow resistance of whirlwind dust-collector is greatly reduced. The circulation air enters the collector at a high speed supported by the air guide plate. The air speed will suddenly reduce at the opening location of snail angle, the particle settlement will be quickened and thus the dust-collecting efficiency is improved; the air discharged from the lower air outlet directly enter the high-efficiency dust-collector, which can greatly reduce the dust content mixed in the circulation air and the granularity(fineness).