| 摘要 |
A drier drum, in particular for papermaking machines, for textile machines and the like, comprises a drum cylinder, end flanges carrying the drum cylinder, a drive system mechanically coupled to at least one of the flanges to rotate it and heating means. The drum comprises a fixed refractory material cylindrical sleeve covered with a heat reflecting coating disposed coaxially inside the drum cylinder and heating means comprising main electrical heating elements of elongate shape adapted to be energized continuously during functioning thereof and profile correcting electrical heating elements of elongate shape adapted to be energized selectively. At least some of the main heating elements are longer than any of the profile correcting heating elements. The electrical heating elements are carried by the cylindrical sleeve.
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