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公开(公告)号：US12083703B2
公开(公告)日：2024-09-10
申请号：US17278162
申请日：2020-01-14
Applicant: Andritz AB
Inventor： Mats Engnell
CPC classification number: B27L11/005 , B02C18/18
Abstract: A wood chipper knife includes a knife body and, in relation to a vertical axis of the wood chipper knife, at least one cutter side, which comprises a top cutting edge portion and a bottom cutting edge portion that intersect to form a cutting edge. The bottom cutting edge portion includes a planar wood attacking portion, which begins at the cutting edge and towards the knife body is followed by a recess. The recess is a pressure release recess, which, from the wood attacking portion, abruptly falls to a bottom of the pressure release recess, and which stretches from the wood attacking portion to the knife body. The knife body comprises a chip guiding portion, which, from the pressure release recess, rises towards the knife body.
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公开(公告)号：US20240410109A1
公开(公告)日：2024-12-12
申请号：US18698077
申请日：2022-10-06
Applicant: ANDRITZ AB
Inventor： Ola LARSSON , Michael BERGMANN , Hannu PYYKÖNEN , Jussi PIIRA , Ari HANNIMÄKI , Vesa KAIPAINEN , Samuli KINNUNEN
Abstract: A method for chemical pulp production in a multi-stage process, comprising a first process stage, comprising a woodyard comprising steps such as debarking, chipping, pile storage and/or reclaim; a second process stage, comprising a fiberline comprising steps such as cooking and/or bleaching; and at least a third process stage; wherein a first set of data is gathered at least at the first and at the second process stage, wherein the first set of data for each process stage comprises measurement results and/or parameters calculated based on measurement results, wherein the measurements and/or parameters are related to raw material, equipment, process measurements and/or product properties; the first set of data is sent to the subsequent process stage, wherein the process steps of the subsequent process stage are adjusted based on the first set of data received; a second set of data is gathered at least at the second and at the third process stage, wherein the second set of data for each process stage comprises information related to availability of processing capacity, predicted availability of processing capacity and/or required material flow or quality; the second set of data is sent to the preceding process stage, wherein the process steps of the preceding process stage are adjusted based on the second set of data received.
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公开(公告)号：US20210347085A1
公开(公告)日：2021-11-11
申请号：US17278162
申请日：2020-01-14
Applicant: Andritz AB
Inventor： Mats Engnell
Abstract: A wood chipper knife includes a knife body and, in relation to a vertical axis of the wood chipper knife, at least one cutter side, which comprises a top cutting edge portion and a bottom cutting edge portion that intersect to form a cutting edge. The bottom cutting edge portion includes a planar wood attacking portion, which begins at the cutting edge and towards the knife body is followed by a recess. The recess is a pressure release recess, which, from the wood attacking portion, abruptly falls to a bottom of the pressure release recess, and which stretches from the wood attacking portion to the knife body. The knife body comprises a chip guiding portion, which, from the pressure release recess, rises towards the knife body.
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