▎ 摘　　要

NOVELTY - The utility model belongs to the technical field graphene production, especially a preparation device of a few layers of graphene, comprising a box body, the outer wall of the top part of the box body is welded with a feeding hopper, and the middle part of the inner wall of the feeding hopper is fixed with a screen through a bolt, the outer wall of the bottom of the feeding hopper is welded with a hollow cylinder through a connecting pipe, and the inner wall of the bottom of the hollow cylinder is welded with a guide seat, the middle part of the outer wall of the bottom of the hollow cylinder is welded with a protective cover, and the outer wall of the bottom of the hollow cylinder is welded with a discharging pipe through the discharging pipe, the lower part of the outer wall of two sides of the discharging pipe is fixed with a first electromagnetic valve. The utility model can be used for collecting and recycling the chemical reagent after the reaction by setting the recycling tank when graphene out oxidation reaction, preventing damage to the surrounding environment, at the same time, the hollow cylinder can dry and wet the raw material when using, It can prevent the working staff of human body caused by directly taking it.