Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1994-07-01
1996-08-13
Lacey, David L.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162343, 162336, 162258, 162300, 162252, D21F 108
Patent
active
055452930
ABSTRACT:
A method and device in the regulation of a headbox. The headbox includes a pulp inlet header, after the pulp inlet header, seen in the pulp flow direction, a distributor manifold whose pipes are opened into an intermediate chamber. The headbox comprises an attenuation chamber placed in connection with the intermediate chamber and, after the intermediate chamber, a turbulence generator having tubes which are opened, at their outlet end, into a discharge duct and, at their inlet end, into the intermediate chamber. In the method, into different positions along the width of the headbox, a pulp suspension flow is introduced, the concentration of this flow is adjustable by combining two component flows. In the method, in the regulation of the concentration of the flow passed into the pulp suspension, two component flows are combined by into the pulp suspension flow introducing an additional flow. The mixing ratio of the combined flow is regulated by adjusting the additional component flow. In the method, the additional component flow is passed into the pulp flow taken out of the inlet header.
REFERENCES:
patent: 3640063 (1972-02-01), Schmid et al.
patent: 3791918 (1974-06-01), Koskimies et al.
patent: 4146425 (1979-03-01), Gutzeit
patent: 4445974 (1984-05-01), Stenberg
patent: 4637439 (1987-01-01), Jeans
patent: 4804441 (1989-02-01), Lyytinen
patent: 4888094 (1989-12-01), Weisshuhn et al.
patent: 4909904 (1990-03-01), Kinzler
patent: 5022965 (1991-06-01), Pitkajarvi
patent: 5133836 (1992-07-01), Allen
patent: 5316383 (1994-05-01), Begemann
Huovila Jyrki
Linsuri Ari
Nyberg Petri
Odell Michael
Lacey David L.
Padgett Calvin
Valmet Corporation
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