▎ 摘　　要

NOVELTY - The utility model relates to the technical field of graphene production, especially relates to an outer circulating cooling mechanism for graphene microwave swelling cavity, which avoids overheating, which is good for normal operation and improves the reliability; It comprises a microwave machine body, a closing door, a hinge, a door handle, a placing table; a microwave tube and an operation panel; the upper part of the right side of the inner cavity of the microwave body is connected with the inner end of the closing door; the middle part of the bottom end of the inner cavity of the microwave body is connected with the bottom end of the placing table; the upper part of the right end of the inner cavity of the microwave body is connected with the inner end of the fan cover; the output end of the operation panel is connected with the power input end of the microwave body; further comprising a ventilation grid, a mounting plate, a hexagonal bolt, a magnetic column, a coil ring, a coil, a fan cover, a fan blade; a fan cover and a restraining shaft; and the coil is connected with the input end of the operation panel; the outer end of the coil ring is connected with the inner end ring side of the fan cover; the outer wall of the fan cover is connected with the inner end of the three groups of fan blades; the outer side of the ventilation grid is connected with the inner side of the mounting plate; the mounting plate is fixed on the upper side of the right part of the rear end of the microwave machine body through a hexagon bolt.