D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/48 (2006.01)
Patent
CA 2118941
A saveall apparatus (10A) is disclosed for collecting water (WA) eject- ed from stock (SA) through a forming wire (12A) of a papermaking machine. The apparatus (10A) includes a box (14A) which is disposed closely adjacent to the forming wire (12A). The box (14A) defines an enclosure (18A) which is connected to a source of partial vacuum (20A) so that water ejected from the stock is collected within the enclosure (18A). A throat wall (22A) is rigidly se- cured to the box (14A) and has an upstream and a downstream end (24A, 25A). The upstream end (24A) of the throat wall (22A) slidingly engages the forming wire (12A). A movable throat wall (26A) cooperates with the throat wall (22A) for defining therebetween a vacuum slot (16A) which is connected to the enclosure (18A) such that the water ejected from the stock is drawn by the partial vacuum (20A) through the vacuum slot (16A) into the enclosure (18A). The throat wall (22A) is disposed in a first plane (P1), and the movable throat wall (26A) is disposed in a second plane (P2) such that when the mov- able throat wall (26A) is moved relative to the throat wall (22A), an angle de- fined between the planes (P1, P2) remains constant.
Metso Paper Inc.
Mitsubishi Heavy Industries Ltd.
Ridout & Maybee Llp
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