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).

公开(公告)号：US20240009599A1

公开(公告)日：2024-01-11

申请号：US18196885

申请日：2023-05-12

申请人： Ovivo Inc.

发明人： Steven J. Lahn ,  Gerald Wayne Howard

IPC分类号： B01D33/067 ,  B01D33/46

CPC分类号： B01D33/067 ,  B01D33/463 ,  B01D2201/184

摘要： A dual drum screen system for wastewater has a first, inner drum positioned within a second, outer drum. Wastewater is filtered first by a filter screen of the inner drum, then by a finer filter screen of the outer drum. Both drums rotate together on a central shaft with a common drive system.

公开(公告)号：US11713569B2

公开(公告)日：2023-08-01

申请号：US17397252

申请日：2021-08-09

申请人： CONTECH ENGINEERED SOLUTIONS LLC

发明人： Jordan Douglas Scott ,  Mathew Edward Bauer ,  Michael Benjamin Brooks

IPC分类号： B01D33/067 ,  E03F5/14 ,  B01D21/00 ,  B01D33/76 ,  B01D33/11

CPC分类号： E03F5/14 ,  B01D21/0042 ,  B01D33/067 ,  B01D33/11 ,  B01D33/76 ,  B01D2201/583 ,  B01D2221/12

摘要： A stormwater treatment device includes a tank defining an internal volume and having an inlet and an outlet, a rotatable screen unit mounted within the tank, the rotatable screen unit being barrel-shaped to define a through path with an inlet end and an outlet end. The rotatable screen unit includes a screen structure with a plurality of screening openings for allowing passage of at least some water from the through path outwardly through the screen structure while inhibiting passage of trash items through the screen structure such that trash items move along the through path from the inlet end to the outlet end. The rotatable screen unit includes a plurality of external drive paddles that rotate with the screen structure and that interact with water that has been screened by passing outwardly through the screen structure interacts with the external drive paddles to cause rotation of the rotatable screen unit.

公开(公告)号：US11465079B2

公开(公告)日：2022-10-11

申请号：US16214099

申请日：2018-12-09

申请人： MANN+HUMMEL GmbH

发明人： Neil Fletcher ,  James Eddiford ,  Robin Nash ,  Anthony W. Fell

IPC分类号： B01D33/067 ,  B01D33/11 ,  B04B5/00 ,  B04B1/00 ,  B01D35/30 ,  F01M11/03

摘要： A liner for a filter sub-assembly has a wall having an outermost surface and an innermost surface. The innermost surface bounds a cavity extending between opposing first and second ends of the liner. A portion of the outermost surface is textured. The liner may be used in a rotor of a filter assembly.

公开(公告)号：US11247236B2

公开(公告)日：2022-02-15

申请号：US16507495

申请日：2019-07-10

申请人： Derrick Corporation

发明人： James R. Colgrove ,  Clifford C. Smith

IPC分类号： B07B1/46 ,  B07B1/18 ,  B01D33/03 ,  B01D33/74 ,  B29C45/00 ,  B29D28/00 ,  B01D29/05 ,  B01D29/19 ,  B01D29/21 ,  B01D29/90 ,  B01D29/92 ,  B01D39/16 ,  B01D33/067 ,  B29K75/00

摘要： Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

公开(公告)号：US11213857B2

公开(公告)日：2022-01-04

申请号：US16151909

申请日：2018-10-04

申请人： DERRICK CORPORATION

发明人： James R. Colgrove ,  Clifford C. Smith

IPC分类号： B07B1/46 ,  B07B1/18 ,  B01D33/03 ,  B01D33/74 ,  B29C45/00 ,  B29D28/00 ,  B01D29/05 ,  B01D29/19 ,  B01D29/21 ,  B01D29/90 ,  B01D29/92 ,  B01D39/16 ,  B01D33/067 ,  B29K75/00

摘要： Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

公开(公告)号：US10913015B2

公开(公告)日：2021-02-09

申请号：US14026861

申请日：2013-09-13

申请人： Bilfinger Water Technologies, Inc.

发明人： Michael Richard Ekholm ,  Michael Pierotti ,  Garth Hayes Saul ,  Dean Brabec

IPC分类号： B01D33/11 ,  B01D33/067 ,  B04B7/18

摘要： A screen assembly including at least upper and lower portions each with screen elements having different orientations. The upper portion includes a first plurality of screen elements and the lower portion includes a second plurality of screen elements. The upper and lower portions are coupled together to form a truncated conical arrangement. At least one screen element of the first plurality of screen elements has a different angular orientation relative to a plane that is perpendicular to the central longitudinal axis than at least one screen element of the second plurality of screen elements has relative to the plane. In some such embodiments, the screen elements of the second plurality of screen elements are each oriented to be in a respective plane that is substantially perpendicular to the central longitudinal axis. The screen assembly may be configured to separate a liquid component and a solid component from a slurry.

公开(公告)号：US10603675B2

公开(公告)日：2020-03-31

申请号：US14928296

申请日：2015-10-30

申请人： Daritech, Inc.

发明人： David DeWaard

IPC分类号： B01D33/11 ,  B03B5/28 ,  B03B11/00 ,  B01D33/067

摘要： A separation system for separating solids from a slurry of waste material, the separation system comprising a housing, a drum assembly, and a drive assembly. The housing defines a collection chamber. Liquid within the collection chamber defines a liquid level. The drum assembly defines a perforated cylindrical wall and the drum assembly is supported such that at least a portion of the drum assembly is below the liquid level. The drive assembly rotates the drum assembly relative to the housing.

公开(公告)号：US20200094174A1

公开(公告)日：2020-03-26

申请号：US16681163

申请日：2019-11-12

申请人： Dari-Tech, Inc.

发明人： David DeWaard

IPC分类号： B01D33/11 ,  B01D33/80 ,  B01D33/067 ,  B01D33/72 ,  B01D33/50

摘要： A rotary screen separator includes a screen having a substantially cylindrical shape extending from a feed end to a discharge end along a horizontal longitudinal axis. The screen is perforated in a plurality of discrete regions. The regions including at least a first perforation region wherein the screen is perforated in a first perforation pattern and a second perforation wherein the screen is perforated in a second perforation pattern. The first perforation pattern is sized to allow liquid and finer particulate matter to pass through the perforations and the second perforation pattern is sized to allow liquid and coarser particulate matter to pass through the perforations in the second perforation pattern. A first vane structure is helically shaped at a first vane depth having a first vane pitch and handedness selected to advance feedstock within the screen as the screen is rotated in operation.

公开(公告)号：US10583379B2

公开(公告)日：2020-03-10

申请号：US15797046

申请日：2017-10-30

申请人： MACHINERIE AGRICOLE BOIS-FRANCS INC.

发明人： Camille Cote

IPC分类号： B01D33/11 ,  B01D33/067 ,  B01D33/50

摘要： A separator and method for separating a heterogeneous supply into a liquid and a solid material. The separator includes a casing in which the supply can collect, and which has an inlet for receiving the supply and an outlet for conveying the supply. The separator also includes a screen which rotates relative to the casing. The screen has perforated sections having a plurality of perforations which permit passage of the liquid. The screen allows for the accumulation of the supply within it, which rises to a level corresponding to a supply height. As this supply height, a screening pressure acts against the perforated sections so as to compact the solid material against the perforations while the liquid passes therethrough. A suction unit sucks the compacted solid material from the perforations, and is disposed higher than the supply height. A supply level regulator regulates the level of the supply within the screen.