Medicinal spray drying device

The utility model relates to a medicinal spray drying device which comprises a drying tower and a cyclone separator, an air inlet pipe is arranged at the top of the drying tower, a discharge pipe is arranged at the bottom of the drying tower, and the drying tower is connected with the cyclone separator through a connecting pipe; a hollow rotating disc is arranged on the upper portion of the drying tower, a plurality of through via holes are vertically formed in the rotating disc, a plurality of atomizing nozzles are arranged at the bottom of the rotating disc, the center of the top of the rotating disc and a vertically-arranged hollow pipe are fixedly arranged together in a communicated mode, and a first gear is fixedly arranged on the upper portion of the hollow pipe after the upper portion of the hollow pipe penetrates out of the top of the drying tower. A gear motor is fixedly arranged at the top of the drying tower, a second gear meshed with the first gear is arranged on an output shaft of the gear motor,