公开(公告)号：US11560325B2

公开(公告)日：2023-01-24

申请号：US17276139

申请日：2019-09-04

申请人： N P Innovation AB

发明人： Nils-Åke Persson

IPC分类号： C02F3/06 ,  A01K61/10 ,  A01K63/04 ,  B01D24/46 ,  C02F103/20

摘要： Bio-filter unit (1) intended for a fish farming system, said bio-filter unit (1) comprising a container (2) with a filter media (3) and an inner architecture, said inner architecture comprising at least one vertical tube (5) having an open input end (6) and an open output end (7), wherein the bio-filter unit (1) is connected to a pump (8) enabling pumping liquid and filter media (3) from a bottom (9) of the container (2) against a top (10) of the container (2) through said at least one vertical tube (5), wherein an upper plate (15) is arranged inclined downwards from and around the open output end (7) of the at least one vertical tube (5) and ends at a distance from a wall (13) of the container, wherein the upper plate (15) Is perforated and wherein a regeneration water outflow (16) is arranged under the upper plate (15).

公开(公告)号：US12128335B2

公开(公告)日：2024-10-29

申请号：US17619703

申请日：2020-06-08

申请人： N P innovation AB

发明人： Nils-Åke Persson

IPC分类号： B01D33/067 ,  B01D29/03 ,  B01D33/073

CPC分类号： B01D33/067 ,  B01D29/03 ,  B01D33/073 ,  B01D2201/605

摘要： The present invention relates to a filter panel (1) intended for a drum filter (2), said filter panel (1) having multiple filter holes (3) wherein each filter hole (3) has a length L and a width W, wherein at least a substantial amount of the filter holes (3) has a length L which is at least 1.5 times the width W, wherein the filter panel (1) has a free surface area which is higher than 81%, preferably at least 83%, more preferably at least 85%, on a side of the filter panel (1) intended to be in contact with a filter cloth of the drum filter (2).