The working principle of the stainless steel grading wheel: Under the action of the fan's suction force, materials move upwards with the air flow to the grading area. Driven by the strong centrifugal force generated by the high-speed rotating grading turbine, coarse and fine materials are separated. Fine particles meeting the particle size requirements pass through the grading wheel into the cyclone separator and dust collector for collection, while coarse particles fall to the crushing area for further crushing.

The motor drives the stainless steel grading wheel to rotate at high speed (speed can be adjusted at will) within the grading housing, generating a strong centrifugal force within the grading machine.

The gas-powder mixture entering the grading machine first goes into the internal grading wheel. Under the force of centrifugal force, larger or heavier particles experience greater centrifugal force and are thrown to the outer edge of the grading wheel and the side wall of the grading machine, where they are no longer affected by centrifugal force and fall naturally into the crushing main unit for further crushing or drop to the discharge port for collection. Smaller or lighter materials, experiencing less centrifugal force, hover within the grading wheel and are carried to a higher position by the induced draft fan's force, flowing along the pipeline to the next component for grading or collection. By varying the speed of the grading wheel through frequency conversion, the size of the centrifugal force in the grading machine can be adjusted, achieving the goal of separating particles to the required size.