Voith Patent Gmbh

Voith Paper Patent Gmbh

Wolfgang Mueller

Gert Gottschalk

Roland Reinhold

Andreas Steidele

Wolfgang Mannes

Jochen Krebs

Naoyuki Iwashige

A pulper is used to comminute and suspend paper stock. The pulper includes a container that is open at the top and has a cylindrical side wall and a driven rotor, which is arranged eccentrically with respect to the center of the container. The bottom of the container can be provided with one or more truncated cones.

Pulper for comminuting and suspending paper stock and its use

A screening device for the wet screening of a paper fiber suspension comprising at least one screen plate having a plurality of screen openings, a support structure being detachably attachable to the screen plate, a rotor movable adjacent the screen plate and an outlet opening for a portion of the paper fiber suspension passing the screen openings The support structure of the device is characterized by an outer support ring and an inner support ring and at least one middle support element arranged radially between the inner and outer support rings to support the at least one screen plate. Elastic pre-stressing against the screen plate is generated, and as a result of the elastic pre-stressing, the screen plate exerts compressive forces on at least one radially intermediate support element and respectively exerts tensile forces both on the inner support ring and on the outer support ring.

Screening device for wet screening of paper fiber suspensions

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Weingarten, Germany

Wolfgang Mueller