▎ 摘　　要

NOVELTY - The utility model claims a vacuum drying device for preparing graphene, comprising a bracket, a drying mechanism, a stirring mechanism, a cooling mechanism, a feeding and discharging mechanism; the cooling mechanism is located above the bracket; the drying mechanism is located above the cooling mechanism; the stirring mechanism is located above the drying mechanism; between the feeding and discharging mechanism is provided with a drying mechanism and a cooling mechanism; the drying mechanism comprises a heating ring, a cylinder body, a first vacuum pump, a first vacuum pump pipeline, a ball valve; the heating ring is located outside the cylinder body; the first vacuum pump pipeline is set at the front side of the cylinder body; the front side of the first vacuum pump is provided with a first vacuum pump; the ball valve is set below the cylinder body. The beneficial effects are as follows: the device is provided with a stirring rod; the graphene is stirred; the drying is more complete and uniform; the setting of the cooling chamber makes the graphene can be cooled in the vacuum environment; it avoids the occurrence of cooling and moisture regaining phenomenon in the external environment.