Feeding and discharging device for washing machine of milk transfer frame

The utility model discloses a feeding and discharging device for a washing machine of a milk transfer frame. The feeding and discharging device is arranged on a washing machine body. The feeding and discharging device comprises a feeding plate, a discharging plate and a material conveying support. The feeding plate is arranged between two transmission chains in the washing machine body. One end of the material conveying support is fixed at the feeding port position of the washing machine body, a plurality of material conveying rollers are sequentially fixed on the material conveying support, and the motor is connected with the material conveying rollers through chains. Supporting plates are arranged on the left side and the right side of the material conveying support. Each supporting plate is fixedly provided with a cylinder, and an infrared sensor is fixed on one cylinder. One end of the discharging plate is fixedly connected with the discharging end of the washing machine body, and the other end of the dis