▎ 摘　　要

NOVELTY - Graphene preparation device comprises constant temperature annealing cavity (1), air inlet pipe (2), mixed gas chamber (3), heater (4), cooling growth chamber (5), air cooling pipe (6), second valve (7), cooling cavity (8), feeding device (9), pressure release pipe (10), reaction chamber, cooling device, metal substrate, conveyor belt, discharging device, box body, first valve and separator. USE - Graphene preparation device. ADVANTAGE - The device is simple and has high production efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene comprising feeding metal substrate into constant temperature annealing chamber, introducing inert gas and reducing gas through air inlet pipe, annealing, feeding into cooling growth chamber, cooling, introducing inert gas through the cooling device, cooling to room temperature, and discharging. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of graphene preparation device. Constant temperature annealing cavity (1) Air inlet pipe (2) Mixed gas chamber (3) Heater (4) Cooling growth chamber (5) Air cooling pipe (6) Second valve (7) Cooling cavity (8) Feeding device (9) Pressure release pipe (10)