The invention discloses a steam device of a supercalender and a
paper sheet moisture regulation method therefor. In the steam device, a steam box and a spray box are arranged sequentially along
paper sheet conveying direction, air atomizers are arranged in the spray box, a steam header
pipe is connected with the steam box through steam
branch pipes, a
compressed air header
pipe is connected with the air atomizers through
compressed air branch pipes, and a low-pressure water header
pipe is connected with the air atomizers through low-pressure water
branch pipes. According to the
paper sheet moisture regulation method, steam is conveyed into the steam box by the steam header pipe through the steam branch pipes and is sprayed to the surface of a paper sheet through through holes in a bottom plate; and meanwhile,
compressed air is conveyed into the air atomizers by the compressed air header pipe through the compressed air branch pipes, low-pressure water is conveyed into the air atomizers by the low-pressure water header pipe through the low-pressure water branch pipes, and water mist is formed by the compressed air and the low-pressure water in the air atomizers and is sprayed to the surface of the paper sheet so as to further regulate the temperature and
humidity of the paper sheet. According to the steam device of the supercalender and the paper sheet
moisture regulation method therefor, the temperature and
humidity of the paper sheet can be effectively regulated so as to improve the
calendering effect.