The eddy current separator is mainly used for the separation of coolant impurities in wet processing. The water-based dirty coolant enters the vortex separator at a certain speed from the entrance. When the liquid rotates downward into the conical separation chamber, the liquid velocity keeps increasing, and the solid impurities are thrown to the chamber wall and down to the bottom of the chamber and excluded by the outlet. And clean liquid to. The upper part flows out from the clean liquid mouth. This separation form has no filter material consumption and can be used in combination with other filters.