Double filter papermaking machine

Details Double filter papermaking machine Double filter papermaking machine

1978-12-26

1979-11-27

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

Automatic control

162263, 162300, 162301, D21F 124, D21F 902

Patent

active

041760050

ABSTRACT:
A double filter papermaking machine comprising two filters guided over a dewatering cylinder. A first one of the filters contains a linear section or path located in front of the cylinder. A domed dewatering or slide shoe, shorter than such linear section, is arranged ahead of the cylinder. The second filter is equipped with an adjustable guide roll, by means of which it is possible to regulate the contact location of the second filter at the first filter, and specifically, between a location disposed at the starting region of the shoe and a location arranged after the shoe at the dewatering cylinder. A regulation device or regulator can be provided which contains a feeler for sensing the position of the water line at the dewatering cylinder. As a function of signals transmitted by the feeler the regulator adjusts the guide roll in a manner such that with a displacement of the water line from a reference position opposite the direction of movement of the filters the contact location is adjusted in the direction of movement of the filters and vice versa.

REFERENCES:
patent: 3201305 (1965-08-01), Webster
patent: 3846233 (1974-11-01), Kankaanpaa
patent: 3876498 (1975-04-01), Justus
patent: 4033812 (1977-07-01), Riihinen
patent: 4055461 (1977-10-01), Turunen
patent: 4071401 (1978-01-01), Babik et al.

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