Double-cone rotary vacuum dryer

The invention relates to the technical field of vacuum dryers, and provides a double-cone rotary vacuum dryer which comprises a support and a charging barrel, the charging barrel is movably connected to the interior of the support, a second motor is fixedly connected to the top of the outer surface of the charging barrel, and a second rotating rod is fixedly connected to the output end of the second motor. According to the embodiment of the invention, after materials are processed, a lot of material residues exist on the inner wall of the charging barrel, a second motor is started to drive the second rotating rod to rotate, the second rotating rod drives a fixed block to rotate, and the fixed block is driven by the second rotating rod to rotate; at the moment, a scraping plate is connected to the outer surface of a fixing block so that the scraping plate can rotate on the inner wall of the charging barrel, the inner wall of the charging barrel can be cleaned after rotation, and meanwhile, a water suction pump