▎ 摘　　要

NOVELTY - The utility model claims a grading filtering device for processing graphene coating, comprising a filtering tank; four corners of the bottom of the filtering tank are fixedly connected with with a supporting leg; the bottom of the supporting leg fixedly connected with spring shock absorber; the bottom of the spring shock absorber is fixedly connected with universal wheel the top of the filter tank is provided with a feeding port; the end part of the feeding port fixedly connected with with a hopper; the left and right sides of the inner part of the filter tank upper end with a slide rail fixedly connected with the inner part of the slide rail is slidingly connected with a filter screen seat; the top part of the filter screen seat is provided with a clamping groove. the filter screen base and the first filter screen are set; the second filter screen; when the graphene coating falls, the first filter screen primarily filters the graphene coating, firstly filtering the larger impurities; the graphene coating after filtering by the first filter screen falls on the second filter screen; the aperture of the second filter screen is small; the graphene coating can be finely filtered; so as to ensure the impurity is filtered.