▎ 摘　　要

NOVELTY - The utility model claims an air flow type powder drying and collecting device, comprising a spiral feeder, a hot air furnace, a feeding pipe, a collecting pipe, a cyclone separator, a distributing pipe, an electric valve, a drying pipe and a controller, the feeding pipe is a three-way pipe and the two feeding ports are respectively connected with the discharging port of the spiral feeder and the air outlet of the hot air furnace, and the discharging port is connected with the feeding port of the collecting pipe, the discharging port of the collecting pipe is connected with the feeding port of the spiral feeder through the wavy drying pipe, the distributing pipe is a three-way pipe and the feeding port is connected with the discharging port of the spiral feeder, and the two air outlets are respectively provided with an electric valve, one discharging port of the distributing pipe is connected with the material returning port of the collecting pipe through the extending pipe, the spiral feeder, hot-blast stove, the cyclone separator and the electric valve are respectively electrically connected with the controller, the oxygen-containing group of the graphene oxide can be better protected at the same time of taking away the moisture in the oxidized graphene powder, and the drying quality is ensured.