Vacuum belt conveying device for guiding a moving web

Details Vacuum belt conveying device for guiding a moving web Vacuum belt conveying device for guiding a moving web

B - Operations, Transporting

65

H

B65H 20/10 (2006.01) B65G 15/58 (2006.01) D21F 7/00 (2006.01)

Patent

CA 2569924

Vacuum belt conveying device for guiding a moving web, in particular a web threading strip of a paper or board web, having an air-permeable transport belt guided endlessly in a loop with an upper run and a lower run, and a device arranged within the loop for applying a vacuum to the inner side of one of the runs of the transport belt in order to hold the web firmly on the transport belt, in which the device for applying a vacuum is formed by means of at least one long-gap ejector, which in each case has an air jet injector having a large number of air outlet nozzles along the inlet side of the long gap and, on the inlet side, is positioned at a distance under the inner side of the run which is provided to hold the web firmly.

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