According to the drying characteristics of grain, a new type of recirculating grain dryer was optimized and designed. Used the method of thin layer drying, dynamic fault flow, on-line automatic weighing and water measuring and other methods, combined electric resistance water measuring method and oven water measuring method, the feasibility and accuracy of on-line automatic weighing and water measuring has been verified, which has realized the high quality energy saving and drying of grain. The drying characteristics of new type of grain recirculating dryer under different conditions were tested in the field, and the drying characteristic curves were obtained. The relative error between the on-line automatic weighing and water measuring and the electric resistance water measuring and the oven water measuring was compared.
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