▎ 摘　　要

NOVELTY - The utility model claims a graphene lubricating oil grading filtering device, relating to the technical field of filtering device, comprising a filtering cabin, a cabin cover, a feeding port, a grinding base, a grinding cavity, a grinding roller, a rotating unit, wherein the filtering cabin is provided with a first filter screen, the second filter screen, the aperture of the filter hole of the first filter screen is greater than the aperture of the filter hole of the second filter screen, the first filter screen is located below the grinding base, the bottom of the filter chamber is provided with a discharging port. through the rotation of the grinding roller, so as to grind the graphene lubricating oil entering the grinding cavity, reducing the particle size of the graphene, so as to improve the filtering precision of the graphene lubricating oil, through the ultrasonic generator, capable of the first filter screen, the graphene on the second filter screen for ultrasonic dispersion, because the graphene particle size after grinding substantially reaches the requirement, and the number of un-grinded graphene particles is less, so as to further reduce the size of the graphene particles by ultrasonic dispersion, improving the filtering precision of the graphene lubricating oil.