▎ 摘　　要

NOVELTY - The utility model claims a device for preparing graphene by CVD; the preparation mechanism is set on the upper end of the supporting plate; the lower end of the supporting plate is connected with the lifting mechanism; the lower end of the lifting mechanism is further provided with a rotating mechanism; the lifting mechanism comprises a lifting bottom plate; between the lifting bottom plate and the supporting plate is provided with a lifting cylinder; the rotating mechanism comprises a rotating main body, the rotating main body is set at the lower end of the lifting bottom plate; the outer side of the rotating main body is provided with a rotating handle; the rotating handle is fixedly connected with the rotating shaft; the other end of the rotating shaft is provided with a bevel gear one; the lower end of the lifting bottom plate is fixedly connected with the rotating rod; the rotating rod is provided with a bevel gear II engaged with the bevel gear I; the user rotates the rotating handle; the rotating shaft drives the bevel gear I and the bevel gear II to rotate; the rotation of the bevel gear II drives the rotation of the lifting bottom plate at the upper end; The device for CVD to prepare graphene can rotate and adjust the lifting, the rotating handle is provided with a friction piece.