This device consists of a reducer, a box, a toothed magnetic roller, a scraper and other parts. The magnetic rollers are arranged in a comb-like manner, and the magnetism is extremely strong. A large amount of magnetic-absorbing impurities in the cooling liquid can be adsorbed on the surface of the toothed magnetic roller, scraped off by the scraper, and gradually accumulated into the dirt collection box. It is especially suitable for the processing of coolant for grinding machines with large flow and large particles and impurities.

This device adopts annular NdFeB permanent magnet material. It can fully adsorb the magnetic chips to the toothed magnetic roller to achieve a good separation effect. It has a stronger ability to adsorb magnetic powder impurities.