Water washing tank structure for metal surface treatment

The utility model discloses a water washing tank structure for metal surface treatment, belongs to the field of water washing tanks, and solves the problems of water resource waste and environmental pollution caused by easy overflow of cleaning liquid in the conventional water washing tank. The device comprises a groove body, an overflow groove is formed in the periphery of the top of the groove body, a plurality of backflow holes communicated with the interior of the groove body are formed in the bottom of the inner wall of the overflow groove, a threaded pipe is in threaded connection with the interior of one end of each backflow hole, and a sponge pad covering an opening in the top of each threaded pipe is buckled to the top of the threaded pipe; a cleaning frame capable of moving up and down is arranged in the tank body, a rotating shaft is arranged in the tank body below the cleaning frame, a plurality of cams are arranged on the rotating shaft, a driving motor is arranged on the outer wall of the lower