Cleaning and repairing equipment for heavy metal or organic matter polluted pebbles

The utility model discloses cleaning and repairing equipment for heavy metal or organic matter polluted pebbles, which is characterized in that a belt conveyor conveys materials into a roller sand washer; the roller wall of the roller sand washer is of a grid structure, the lower portion of the roller sand washer is immersed in the cleaning tank, pebbles cleaned by the cleaning tank are conveyed to the improved pipe chain conveyor, and small-particle-size gravels screened out from the bottom of the cleaning tank are discharged through the discharging spiral conveyor in a raising mode. The improved pipe chain conveyor comprises a feeding section, a cleaning section, an upward raising section, a discharging section and a rotation section which are connected in sequence to form a closed rotation structure, the cleaning section sinks into the cleaning tank, and the water treatment system collects and treats cleaning liquid in the cleaning tank. According to the technical scheme, cleaning and repairing treatment o