▎ 摘　　要

NOVELTY - The utility model claims an efficient impurity removing auxiliary device for graphene preparation, comprising a blanking hopper, an electromagnetic block, a blanking plate, a cam and an axial flow fan, the lower end of the lower hopper is provided with a blanking plate, two ends of the bottom of the blanking hopper are provided with a mounting groove, the bottom of the blanking hopper and located between the mounting groove is provided with a cam, the edge of the cam is jointed with the bottom of the blanking plate, between the two ends of the bottom of the blanking plate and the mounting groove is provided with a spring, the top and respectively of the spring are welded with the bottom of the lower material plate and the inner wall of the lower hopper. The utility model has obvious effect, simple operation, durable, it can meet the working requirement, and it is suitable for popularization.