▎ 摘　　要

NOVELTY - The utility model claims a grinding device for preparing graphene, solving the problem that the graphene grinding effect is not good in the prior art. The utility model comprises a machine frame, the machine frame is provided with a grinding cylinder, the grinding cylinder is provided with an inner grinding cylinder, the upper part of the grinding cylinder is provided with an upper cover body, the upper cover body is provided with a grinding mechanism, the grinding mechanism extends downwards into the grinding cylinder and is matched with the inner grinding cylinder; the lower part of the grinding cylinder is provided with a discharging hopper, the discharging hopper is located below the grinding mechanism. The grinding mechanism of the utility model adopts double-arc grinding, namely the first grinding ball and the first grinding cavity matched with the first level rough grinding material, the second grinding ball and the second grinding cavity matched with the material for secondary fine grinding, upper and lower two-stage grinding order set, improving the grinding efficiency and grinding effect.