▎ 摘　　要

NOVELTY - The utility model claims a reaction solution filtering device for preparing graphene quantum dot doped with nitrogen atom, comprising a filter box; the top of the filter box is provided with a cover plate; the top part of the cover plate is fixedly provided with a driving motor; the end part of the driving motor transmission shaft fixedly connected with with a rotating rod; the bottom of the rotating rod fixedly connected with with a U-shaped scraper; the driving motor can drive the U-shaped scraper to rotate; the U-shaped scraper is matched with the brush wire to clean the surface of the filter mesh enclosure it can prevent the filter hole from blocking the influence of filtering; by setting the filter mesh enclosure filtering the mesh enclosure in the reaction solution to filter; the reaction solution after filtering will flow out from the water outlet; the filtered impurity can be cleaned by the slag outlet; it is convenient to use, convenient to clean; by setting the hanging ring, it is convenient for lifting the cover plate to regularly clean and maintain the component of the inner cavity of the filter box.