Fecha de publicación: 30/10/2020 Fuente: WIPO "circular economy" The utility model discloses a wheat straw washing and evacuating device. The utility model relates to the technical field of straw treatment. Including a machine frame, wherein a water tank is mountedon the rack; bearing pedestals are symmetrically and inversely arranged on the inner wall of the top of the water tank. A transmission shaft is sleeved with the bearing pedestal, penetrates through the side wall of one end of the water tank and is further sleeved with a gear and a gear meshing gear ring, the gear rings are symmetrically sleeved with the two ends of a rotary drum, a high-pressurewater pipe led in from the outside is arranged in the rotary drum, a spraying head is arranged on the water pipe located in the rotary drum, and a plurality of small holes are formed in the rotary drum; simple and unique structure, novel design thought, wheat straws are fed into the contra-rotating drum; the wheat straws are dispersed by rotating the rotary drum; high-pressure water is sprayed ina matched mode to clean the wheat straw, impurities such as dust and fine sand and fine soil particles in the wheat straw are removed, the impurities are taken away from small holes through water falling into the inner bottom of the rotary drum, meanwhile, spiral ribs on the inner wall of the rotary drum can drive the wheat straw in the rotary drum to move forwards, and the purpose of continuous operation is achieved.