Principle of stainless steel grading wheel operation: Materials are moved to the grading zone with the ascending air flow under the force of the fan, and are separated into coarse and fine particles under the strong centrifugal force generated by the high-speed rotating grading turbine. Fine particles meeting the particle size requirements pass through the grading wheel into the cyclone separator and dust collector for collection, while the coarse particles descend to the crushing zone for further crushing.

The motor drives the stainless steel grading wheel to rotate at high speed within the grading shell (speed can be adjusted as desired), creating a strong centrifugal force within the grading machine.

The gas-powder mixture entering the classifier first goes into the classifier wheel interior. Under the force of centrifugal force, larger or heavier particles are subjected to greater centrifugal force and are thus thrown to the outer edge of the classifier wheel and the side wall of the classifier, where they no longer feel the effect of centrifugal force and naturally fall into the crushing main unit for further crushing or drop to the discharge port for collection. Smaller or lighter materials experience less centrifugal force and hover within the classifier wheel interior. Influenced by the suction force of the induced draught fan, they are carried to a higher position and then flow through the pipeline to the next component where they are classified or collected. By adjusting the speed of the classifier wheel through variable frequency control, the size of the centrifugal force in the classifier can be modified to achieve the separation of materials into the desired particle size.