Paper making and fiber liberation – Apparatus – White water or broke recovery – recirculation or treatment
Patent
1984-08-16
1990-03-13
Chin, Peter
Paper making and fiber liberation
Apparatus
White water or broke recovery, recirculation or treatment
162190, 162301, 162DIG7, D21F 166
Patent
active
049081020
ABSTRACT:
This device, preferably formed as a dual paper machine, has according to a preferred embodiment two endless screens, mainly a lower screen (21) and an upper screen (22). The lower screen (21), on which is formed a paper web, and the upper screen (22) are moved together in the lower part of a dehydration cylinder (25) arranged in the upper screen. Both screens (21,22) are unrolled from the rising lower quadrant of said cylinder (25) and are laid on the upper part of the support cylinder (26) arranged in the lower screen (21). The bandage of the dehydration cylinder (25) has hollows which absorb water from the screens along their arcs of contact with the cylinder and which project the water towards the inside of the loop formed by the screens of the cylinder. In the feed direction of the screens and downstream of the support cylinder (26), there is arranged a receiving container (36) for the projected water. The container has a curved covering wall (40) which extends opposite the feed direction of the screens up to the interstice formed between the dehydration cylinder (25) and the screens (21,22). The reception container (36) is divided into two chambers (44,45) which extend transversally to the screens and which have separate side discharge conduits. The water supplied into the main chamber (45) through the covering wall (40) is deviated by means of blades (52) towards the direction of the discharge conduit.
REFERENCES:
patent: 3846232 (1974-11-01), Kankaanpaa
patent: 4113556 (1978-09-01), Kankaanpaa
patent: 4207144 (1980-06-01), Meinecke et al.
patent: 4209360 (1980-06-01), Stenberg et al.
patent: 4220502 (1980-09-01), Levanen
patent: 4267017 (1981-05-01), North
patent: 4425187 (1984-01-01), Armstrong et al.
Csordas Elemer
Egelhof Dieter
Kolb Otmar
Meinecke Albrecht
Mullner Josef
Chin Peter
J. M. Voith GmbH.
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