Transfer suction roll for transfer of a material web

摘要

The subject of this invention is a transfer suction roll (21) for transferring a material web with a perforated suction roll shell (22) that is pivot-mounted in roller bearings (25) and a suction box (24) mounted inside the transfer suction roll (21). The suction box (24) defines a suction zone (37) on the perforated suction roll shell (22) by means of seals (32). According to the invention, a suction hood (26) is arranged on the outer circumference of the transfer suction roll (21) through which air can be sucked out of the suction box (24) through the perforated suction roll shell (22).

主权项

1. A transfer suction roll (21) including an outer circumferential surface for transferring a material web (17) from one machine section to a subsequent machine section, comprising: a perforated suction roll shell (22) that is rotatably supported at each end by a roller bearing (25); a suction box (24) mounted inside the suction roll shell (22); spaced apart seals (32) on the suction box (24) which delineate and define a position of a suction zone (37) on the perforated suction roll shell (22); and a suction hood (26) arranged on the outer circumference of the transfer suction roll (21) by which air can be sucked out of the suction box (24) through the perforated suction roll shell (22); wherein the seals (32) of the suction box (24) are formed by flexible sealing strips (34, 35) and wherein during initial installation or replacement the flexible sealing strips (34) are cured and pre-stressed against the roll shell (22) and subject to shortening to final sealing length by grinding against the perforated suction roll shell (22) when the transfer suction roll (21) is run.