Valmet Ab

Metso Paper Inc.

Tyco Electronics Amp Gmbh

Valmet Technologies Oy

Valmet Technologies, Inc.

Valmet Aktiebolag

Tyco Electronics Svenska Holdings Ab

Jörgen Lundberg

Heikki Kettunen

Johan Bylander

Rickard Andersson

Magnus Henriksson

Anders Bergdahl

Peter Kraemer

Markus Ofenloch

Fredrik Pontén

Olof Melander

Magnus Danielsson

Jonas Orgård

Stefan Mattsson

Anders Löfstrand

Leif Ödmark

Peter Nykvist

Jonas Magnusson

Fredrik Holmstrand

Anders Hedblom

Tomas Vikström

Torbjörn Henriksson

Åke Sundström

Christian Humann

Juha Ruotsi

Emma Sundling

Robert CARLSTRÖM

Tomas EDSTRÖM

Tomas HÖGLUND

Carlo Marrocco

A pulp-filter arrangement () comprises a rotatable drum () and a non-rotating valve arrangement (). The rotatable drum () has a cylindrical water-permeable pulp-supporting shell (), a plurality of drain pipes () and a rotating hollow shaft (). The plurality of drainpipes () connects the rotating hollow shaft () with a collecting channel () situated radially directly inside the cylindrical water-permeable pulp-supporting shell (). The non-rotating valve arrangement () is disposed within the rotating hollow shaft () for sealing off the rotating hollow shaft () from a radially inner outlet () of the drain pipes () when respective radially inner outlet () is situated within a sealed zone. The non-rotating valve arrangement () is further arranged to, in a transition zone immediately following the sealed zone, open a throttled passage between the rotating hollow shaft () and the radially inner outlet ().

Rotary drum vacuum filter with a throttling valve

Growing community of inventors

Uppsala, Sweden

Jörgen Lundberg