Hot air drying device for strip steel pickling

The hot air drying device comprises an operation box, a vertical partition plate is fixedly installed on the inner face of the operation box, a drying box is arranged between one side face of the partition plate and the inner side face of the operation box, and a first rotating shaft is rotationally connected between the inner faces of the drying box. The outer edge of the first rotating shaft is fixedly sleeved with a swing roller. According to the strip steel drying device, strip steel drying can be changed into assembly line type operation, the strip steel can be dried only by putting the strip steel in through transmission of the transmission box, the material taking and discharging steps in a traditional drying procedure are omitted, labor is saved, meanwhile, the working efficiency is greatly improved, and the production cost is reduced. The swinging roller can enable the strip steel to move up and down when the strip steel passes through the rotating roller on the outer edge of the swinging roller, wat