▎ 摘　　要

NOVELTY - The utility model claims a grading device for preparing graphene material, comprising a cover body, wherein the cover body is slidingly provided with a sliding plate I and a sliding plate II; a sliding mechanism is installed between the sliding plate I and the sliding plate II and the cover body; a filter plate I is fixedly installed between the sliding plate I and the sliding plate II; a filter plate II; a filter plate three and a filter plate four; a plurality of springs are fixedly installed between the sliding plate one and the cover body; the sliding plate one is fixedly installed with a pull rod; and the pull rod passes through and extends out of the cover body; the cover body is upper end with a feeding hole. The advantages are as follows: it can effectively reduce the filter plate one, filter plate two, filter plate three and filter plate four is blocked, improves the graphene taking efficiency, at the same time, it also reduces the probability of the original using flat plate set caused by the phenomenon of incomplete grading.