Roller type impurity removing machine

The utility model relates to a roller type impurity removing machine, which comprises a roller, a bracket and a motor. The roller comprises a plurality of transversely and uniformly distributed steel bars, a feed port is formed at the front end thereof, a roller gear is arranged on the outer side of the front end thereof, a discharge port is formed at the bottom of the tail end thereof, and the roller is arranged on the bracket at a slope of 25-35 degrees; the motor is arranged on the bracket on the same side of the gear, and a driving belt pulley is connected with one end of the motor; the driving belt pulley is connected with a driven belt pulley through a belt, and a gear is arranged on the driven belt pulley; and the gear is positioned at the bottom of the roller gear and is engaged with the roller gear. The roller type impurity removing machine can completely separate out dried onion skin, soil blocks, stone blocks and other impurities attached and entrapped on fresh onions, so as to greatly improve the