| 摘要 |
Annular drying element (15) for mounting on a rotor axle in a drying apparatus, and where the drying element comprises at least two annular plate elements, a first (16') and a second plate element (16"), where at least the first plate element (16') is configured with a number of through-going openings (25) in the plate. The plate element with said openings (25) is lying opposite the non-broken through surface (51) of the adjacent plate element, and the plate elements are connected to one other by welding (52) along the edge (53) of the openings, and the non-broken through surface (51) lying in the bottom of an opening (25) is perced to provide through-going holes (54) through the annular plate element, extending from the one side to the other side of the drying element (15). There is hereby achieved an annular drying element, in that the substantially identical drying elements are assembled against each other by being welded together at the periphery and along the inner circumference, whereby a pressure-tight assembly is achieved. Moreover, welding is carried out along the whole periphery of the openings, so that this welding fastens partly agains the edge of the opening in the first plate and partly against the adjacent non-broken surface of the opposite plate element. There is hereby achieved a pressure-tight element, and where it is subsequently possible to carry out piercings corresponding to the earlier openings, insasmuch as here a piercing shall thus be carried out only through a single plate.
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