Chemical iron drum spraying device

The utility model discloses a chemical iron drum spraying device which comprises a sliding frame, sliding wheels are arranged in the sliding frame, the sliding wheels are horizontally arranged in sliding grooves in the sliding frame, and a connecting assembly is arranged in the middle of the lower portion of each sliding wheel. An inner supporting assembly is fixedly connected to the lower portion of the connecting assembly and comprises a mounting plate, a telescopic rod, a rotating seat and an abutting strip, the mounting plate is horizontally and fixedly connected to the lower end of the inner supporting assembly, mounting grooves are formed in the lower portion of the mounting plate and are in a strip shape, and the multiple mounting grooves are annularly formed; the upper ends of the multiple telescopic rods are arranged in the multiple mounting grooves correspondingly, the rotating bases are fixedly installed at the lower ends of the telescopic rods, and the abutting strips are rotationally arranged in