公开(公告)号：US11980837B2

公开(公告)日：2024-05-14

申请号：US17252429

申请日：2019-05-22

Applicant: VALMET AB

Inventor： Åke Sundström ,  Jonas Magnusson ,  Anders Löfstrand ,  Peter Nykvist ,  Jörgen Lundberg

IPC: B01D33/073 ,  B01D33/067 ,  B01D33/64 ,  B01D33/82 ,  D21C9/06

CPC classification number: B01D33/073 ,  B01D33/067 ,  B01D33/64 ,  B01D33/82 ,  D21C9/06

Abstract: A pulp-filter arrangement (1) comprises a rotatable drum (10) and a non-rotating valve arrangement (30). The rotatable drum (10) has a cylindrical water-permeable pulp-supporting shell (14), a plurality of drain pipes (16) and a rotating hollow shaft (18). The plurality of drainpipes (16) connects the rotating hollow shaft (18) with a collecting channel (22) situated radially directly inside the cylindrical water-permeable pulp-supporting shell (14). The non-rotating valve arrangement (30) is disposed within the rotating hollow shaft (18) for sealing off the rotating hollow shaft (18) from a radially inner outlet (24) of the drain pipes (16) when respective radially inner outlet (24) is situated within a sealed zone. The non-rotating valve arrangement (30) is further arranged to, in a transition zone immediately following the sealed zone, open a throttled passage between the rotating hollow shaft (18) and the radially inner outlet (24).

公开(公告)号：US09598818B2

公开(公告)日：2017-03-21

申请号：US14650781

申请日：2013-12-19

Applicant: Valmet AB

Inventor： Tobias Lööf ,  Patrik Pettersson ,  Jonas Orgård ,  Hans Lövgren ,  Per Wallin ,  Peter Nykvist ,  Jonas Magnusson

IPC: D21F1/66 ,  D21C9/06 ,  D21C9/18 ,  D21D1/40 ,  D21F1/74

CPC classification number: D21F1/66 ,  D21C9/06 ,  D21C9/18 ,  D21D1/40 ,  D21F1/74

Abstract: Apparatus for washing and/or dewatering cellulose pulp is disclosed including a movable permeable surface in a pulp transportation chamber having a chamber gap above the movable permeable surface, a pulp distributor for distributing pulp onto the movable permeable surface, a throttle having a throttle gap width and an adjustable throttle adjuster to remotely adjust the throttle gap width so that a volume of pulp flow into the pulp distributor is equal to or greater than the volume of pulp flow out of the distributor during operation.

公开(公告)号：US20150361617A1

公开(公告)日：2015-12-17

申请号：US14650781

申请日：2013-12-19

Applicant: VALMET AB

Inventor： Tobias Lööf ,  Patrik Pettersson ,  Jonas Orgård ,  Hans Lövgren ,  Per Wallin ,  Peter Nykvist ,  Jonas Magnusson

IPC: D21F1/66

CPC classification number: D21F1/66 ,  D21C9/06 ,  D21C9/18 ,  D21D1/40 ,  D21F1/74

Abstract: Apparatus for washing and/or dewatering cellulose pulp is disclosed including a movable permeable surface in a pulp transportation chamber having a chamber gap above the movable permeable surface, a pulp distributor for distributing pulp onto the movable permeable surface, a throttle having a throttle gap width and an adjustable throttle adjuster to remotely adjust the throttle gap width so that a volume of pulp flow into the pulp distributor is equal to or greater than the volume of pulp flow out of the distributor during operation.

Abstract translation: 公开了一种用于洗涤和/或脱水纤维素纸浆的设备，其包括在可移动可渗透表面上方具有腔室间隙的纸浆输送室中的可移动可渗透表面，用于将纸浆分配到可移动可渗透表面上的纸浆分配器，具有节流间隙宽度 以及可调节的节气门调节器，以远程调节节流间隙宽度，使得流入纸浆分配器的纸浆体积等于或大于在操作期间从分配器流出的纸浆流量。