▎ 摘　　要

NOVELTY - The device has a constant speed motor (2) that is mounted on one end of a fixed bottom plate (1), and a grinding shaft that is disposed at the other end. The lower end of a grinding cylinder (4) is welded with a conical hopper. A secondary grinding cylinder (701) is arranged in the middle of the bottom of the conical hopper and equipped with a square cover (702). The grinding shaft passes up through the secondary grinding cylinder and is connected to an upper conical baffle through a bearing on a grinding plate. An integrated connecting plate is equipped on the grinding shaft and an outer side of the connecting plate is connected with three groups of grinding rollers. The bottom end surface of the grinding roller is in contact with the grinding plate. USE - Grinding device for use in alloying of graphene. ADVANTAGE - By providing two sets of grinding rolls, the graphene after one grinding falls into the secondary grinding cylinder and is ground by the secondary grinding roller, thus providing better grinding effect. The graphene powder after the secondary grinding can directly fall into the material bucket along the lower conical baffle, which saves energy and saves time. The setting of the cleaning brush can clean the secondary grinding roller during the grinding process to improve the grinding effect of the secondary grinding roller. DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of the grinding device. Bottom plate (1) Constant speed motor (2) Grinding cylinder (4) Secondary grinding cylinder (701) Square cover (702)