Cleaning device for inner cavity of color sorting machine

The invention discloses a cleaning device for an inner cavity of a color sorting machine. The device comprises a sliding groove and a feeding hopper which is arranged above the sliding groove, whereina feeding vibrator is arranged at the bottom end of the feeding hopper, the two sides of the bottom end of the sliding groove are provided with a background lamp and a foreground lamp correspondingly, cameras are arranged on one sides of the background lamp and the foreground lamp correspondingly, a nozzle valve is arranged below the foreground lamp, a waste discharging hopper and a finished product discharging hopper are arranged at the bottom end of the sliding groove, and the device is characterized in that a mounting plate is arranged at the bottom end of the sliding groove, flow guidingplates are arranged in the sliding groove, containing cavities are formed between one sides of the flow guiding plates and the two sides of the sliding groove correspondingly, through pipes are inserted into the containing cav