Fecha de publicación: 27/10/2020 Fuente: WIPO "circular economy" The utility model discloses a wheat straw three-element separation device. The utility model relates to the technical field of wheat straw treatment. The device comprises an input pipeline and a separation tank, the outlet end of the input pipeline is connected to the lower portion of the separation tank, a spiral upward rotating groove is formed in the inner straight wall of the separation tank,a plurality of twisting protruding blocks are integrally arranged in the rotating groove, and a baffle is arranged on the side, away from the bottom of the rotating groove, of the outlet end of the input pipeline; compact structure, reasonable design, novel and unique structure, conveying the wheat straw particles subjected to high-temperature and high-pressure cooking into a separation tank through an input pipeline; in the high-pressure spraying process of the wheat straw particles, the wheat straw particles rapidly move upwards along the rotating grooves and the protruding blocks in the rotating grooves along the rotating grooves, meanwhile, the wheat straw particles located in the grooves are rubbed and twisted by the protruding blocks, the wheat straw particles located in the groovescan spirally move upwards, and primary three-element separation of wheat straw is achieved.