Hot-air drum and flight dryer

Abstract

The application discloses a hot air type roller scraper dryer and belongs to the technical field of scraper dryers, which comprises a roller, a hot air machine communicated with the roller, the hot air machine being used for providing hot air for the roller, and a graphene coating arranged on the inner wall of the roller; the roller is provided with a cylinder air inlet and a cylinder air outlet; the hot air machine is provided with a natural air inlet, a circulating air inlet and a machine air outlet; the machine air outlet is communicated with the cylinder air inlet through a first pipeline, and the cylinder air outlet is communicated with the circulating air inlet through a second pipeline. The application efficiently utilizes electric energy, the electric energy is converted into kinetic energy through a motor, the kinetic energy is used for rotating the impeller at high speed to rub air to generate high-temperature hot air, the high-temperature hot air is transmitted to the graphene coating in the roller, the high-heat-conducting property of the graphene is utilized to rapidly transmit heat to the outer surface of the roller, the material on the outer surface of the roller is heated to be dried, and the energy-saving rate of the application reaches 50% compared with the traditional roller dryer which utilizes an electric furnace wire, an electric heating rod, steam or a heat-conducting oil boiler.

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