▎ 摘　　要

NOVELTY - The utility model claims a device for preparing graphene, belonging to the preparation graphene powder equipment field, aiming that the cooling effect of the equipment is more efficiency. The technical solution is as follows: comprising a reaction chamber, a first gas inlet, a second gas inlet, a material inlet, a sample collection chamber, a sample collection chamber and a sample channel and a final sampling chamber, the inner wall of the sample channel provided with a cooling mechanism for lengthening graphene fall travel. The utility model is suitable for the preparing graphene powder field.