Silkworm chrysalis winnowing and impurity removing device

The utility model belongs to the technical field of silkworm chrysalis sex identification, and relates to a silkworm chrysalis winnowing and impurity removing device which comprises a U-shaped box, supporting legs are fixedly connected to the four corners of the bottom of the U-shaped box, and a driving assembly used for driving silkworm chrysalis to move is arranged in the U-shaped box. A side plate is fixedly connected to one side of the U-shaped box, a cylinder is slidably connected to one side of the side plate, a feeding port is formed in one side of the cylinder, a plurality of discharging ports are formed in the other side of the cylinder, a collecting box is arranged on one side of the U-shaped box and located under the discharging ports, and a plurality of vibrators are arranged at the bottom of the cylinder. In the prior art, when the silkworm chrysalis is subjected to impurity removal, the error rate is high, multiple times of screening are needed, the device meets the requirement that an optocoupl