Equipment for drying lengths of materials

摘要

In equipment for drying lengths of materials, in particular lengths of paper, with the length being guided by means of a permeable belt in a semi-circle around a drying drum and being deflected by a guide roller toward a next drying drum which is enveloped in the same manner, with blow boxes being arranged between the drums to supply the drying medium, the improvement comprising means mounting blow-out sections (7) of the blow boxes (3) in a displaceable manner in the radial direction of the drying drums (1, 2) within a frame (12), and means whereby the sections can be returned into their initial positions.