Paper making and fiber liberation – Apparatus – Apparatus repair – cleaning or conditioning
Patent
1990-03-08
1991-09-17
Hastings, Karen M.
Paper making and fiber liberation
Apparatus
Apparatus repair, cleaning or conditioning
162273, 1623601, D21F 304
Patent
active
050492390
ABSTRACT:
Frame construction for a press section of a paper machine which comprises, in a direction of running of a paper web, first a front frame and then a separate rear frame. On the front and rear frame, press rolls are mounted, at least some of which belonging to a compact press roll combination in which there are press nips between the press rolls and through which press fabrics are passed. With a view to facilitating replacement of press rolls and fabrics, the frame construction comprises a space which is situated between the front frame and the rear frame which are not connected together, and above the press roll combination. This space is constantly at least partially open, through which the different press rolls in the combination can be replaced. This space also facilitates replacement of the press fabrics provided in conjunction therewith. Another embodiment of the invention discloses an openable connection between the front and an intermediate frame.
REFERENCES:
patent: 4608125 (1986-08-01), Autio
patent: 4657634 (1987-04-01), Autio
patent: 4909905 (1990-03-01), Ilmarinen et al.
patent: 4919762 (1990-04-01), Laapotti et al.
Hastings Karen M.
Valmet Paper Machinery Inc.
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