Novel rotary vacuum dryer

The utility model relates to the technical field of drying machines, and discloses a novel rotary vacuum drying machine which comprises a drying machine body arranged at the top of a base, two symmetrically-distributed connecting bases are arranged on the outer surface of the drying machine body, and two exhaust pipes symmetrically distributed up and down are arranged in the drying machine body. A filter screen is arranged on the outer surface of the exhaust pipe, a nitrogen inserting pipe is arranged in the connecting base, and one end of the nitrogen inserting pipe extends into the drying machine body. According to the novel rotary vacuum drying machine, dry dust in the drying machine body is not prone to entering the exhaust pipe through the filter screen, then the exhaust pipe is normally used in the drying machine body, the exhaust efficiency of the exhaust pipe is improved, the drying efficiency of the drying machine body is improved, and the nitrogen insertion pipe is additionally arranged, so that the