Vacuum scraper drying device

The utility model relates to a vacuum scraper drier which comprises a shell of a communicating heat carrier, a vacuum pump, a supporting base and end covers with viewing mirrors, wherein, the shell is arranged in a jacket. A scraper pipe shaft of the communicating heat carrier is arranged in an internal cylinder and eccentrically penetrates through the two end covers. A row of hollow stay bars with equal length are arranged vertically and symmetrically on the scraper pipe shaft in an equidistant way. The back end of the hollow stay bars is fixed with a scraper at the end communicated with the scraper pipe shaft. A sprocket driven by a motor is arranged on the scraper pipe shaft at the head outside of the end cover. A sealing element is used for sealing between the scraper pipe shaft and the end covers. Both ends of the scraper pipe shaft are connected in sealing by rotary joints. The utility model with the advantages of large heat-exchange surface, even heat amount in a cavity, low power consumption and no noise can dry humid broken solid materials, mash materials and concentrated liquid materials.