Dewatering device with adjustable force elements for the web-for

Details Dewatering device with adjustable force elements for the web-for Dewatering device with adjustable force elements for the web-for

1992-03-06

1993-11-16

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162301, 162354, D21F 154

Patent

active

052620107

ABSTRACT:
A dewatering device for the web-forming or wet section of a papermaking machine comprises foils arranged transverse to a forming wire, that is to say, extend in the cross-machine direction. Force or powering elements act upon the foils so as to exert a force or pressure upon the forming wire, and thus, bring about dewatering and sheet formation of a layer of fiber stock suspension reposing upon the forming wire. The force elements are constructed and positioned such that additional moments are generated which counteract tilting moments produced by the frictional force present between the foils and the forming wire. In certain arrangements, the force elements also can be interconnected with one another.

REFERENCES:
patent: 3585105 (1971-06-01), Stuebe
patent: 4523978 (1985-06-01), Pullinen
patent: 4648943 (1987-03-01), Malashenko et al.
patent: 4988408 (1991-01-01), Evalahti
patent: 5061347 (1991-10-01), Bubik et al.

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