▎ 摘　　要

NOVELTY - The device has a connecting rod (10) whose one end is rotatably mounted on two fixing blocks, and the other ends of two connecting rods are extended into a mixing box (4). An outer sleeve of a rotating rod is fixedly provided with a first gear. A rotating groove is formed on one side of two top plates. A mounting rod is rotatably mounted in the two rotating slots. The outer fixing sleeve of mounting rod is provided with two second gears. Two second gears are respectively meshed with the two first gears. A second rotating electrical machine is fixedly mounted on one side of one of the two top plates. The output shaft of the second rotating electrical machine is welded to one end of the mounting rod. Two buffer plates are fixedly mounted on the bottom of the mixing box. Two buffering grooves are opened at the top of a bottom plate (1). The buffer plate is slidably connected to the side wall of the buffer groove. USE - Device for preparing graphene. ADVANTAGE - The raw material is fully contacted and mixed, and the reaction efficiency is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of device for preparing graphene. (Drawing includes non-English language text) Bottom plate (1) Supporting rod (2) Slide plate (3) Mixing box (4) Connecting rod (10)