Fibre pulp water extn. roller for paper mfr. - comprises side sealing bars for suction chamber and shoe in perforated roller mantle for extn. at differing pressure points

摘要

Mechanism has a suction chamber with side sealing bars in a perforated roller mantle. The interior of the suction roller also contains an additional suction shoe. Pref. pressure point is formed by two lower press rollers. In the direction of travel, a zone is formed between the second press roller and the bar where the perforations are not covered in the roller mantle. ADVANTAGE - Water extn. between two pressure points and also at the entry or exit zones at the pressure points from the roller perforations or the blanket