▎ 摘　　要

NOVELTY - The utility model claims a preparation method of graphene device, comprising a dosing feeder, a microwave resonant cavity, a fan, a filter and a collecting chamber, the microwave resonant cavity is provided with a reaction pipe; in the reaction pipe along the flow direction of the air flow of the fan is provided with a filter hole gradually varying multiple filter of small, adjacent can for containing material containing cavity of the diameter of the different materials is formed between two sheets, the feeder is set above the reaction pipe entrance, one end of the reaction pipe connected with the fan; the other end and the filter is connected between the blower and the reaction pipe is provided with a gas inlet, the collecting chamber is arranged below the filter, the filter is connected through pipe and the fan, the air pipe is provided with an air valve, the microwave cavity is provided with a microwave source. through this utility model solves the problem that the preparation method of graphene in the existing technology for preparing process is slow, the efficiency is low.