▎ 摘　　要

NOVELTY - The puffing device has a hollow furnace portion (1). A rotatable sun wheel (2) is provided inside the furnace portion. The outer side of the sun wheel mesh is provided with a planetary gears (3). The sun wheel is fixedly connected with a sun shaft (4). A planet carrier (5) is rotatably connected to lower end of the sun shaft. The planet carrier is rotatably connected with planetary gears. A internal ring gear (6) is fixedly connected inside the furnace portion. The planetary gear mesh is provided with internal ring gear. A planet shaft (7) is fixedly connected to lower end of the planet gear. A hexagonal prism (8) is fixedly connected to lower end of the planet shaft. The outer circumference of hexagonal prism is connected with a stirring portion (9). The stirring portion has structure that can be lifted vertically. The lower end of hexagonal prism is fixedly connected with a stirring blade (10). The furnace portion is provided with a horizontally sliding box portion (11). USE - The puffing device is used for preparing graphene. ADVANTAGE - The puffing device solves the problems that the opening of door during heating process of furnace portion is easy to cause large amount of heat loss and stirring efficiency of stirring shaft is not high. DESCRIPTION OF DRAWING(S) - The drawing shows a whole structural schematic view of the puffing device. Hollow furnace portion (1) Support frame (12) Loading disc (13) Box portion (26)