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| Number | Title | Issue Date |
| 7549957 | Screw-type solid bowl centrifuge A screw-type solid-bowl centrifuge including a rotatable drum having a tapering portion and a cylindrical portion. The rotatable screw includes a screw body, at least one main screw blade surrounding the screw body and forming a plurality of screw flights. The plura... | 06/23/2009 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7335312 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 02/26/2008 |
| 7320750 | Centrifuge with controlled discharge of dense material A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A recepta... | 01/22/2008 |
| 7311654 | Solid bowl helical conveyor centrifuge comprising an adjustable outlet for solids A solid bowl helical conveyor centrifuge, including a rotatable drum having a horizontally-oriented axis of rotation and a rotatable screw arranged in the rotatable drum. Also included is at least one discharge opening oriented at an angle with respect to the horizo... | 12/25/2007 |
| 7294274 | Filtration system with enhanced cleaning and dynamic fluid separation A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of proc... | 11/13/2007 |
| 7282019 | Centrifuge with shaping of feed chamber to reduce wear A centrifuge of the type having an outer bowl and an inner rotor both of which are generally cylindrical and rotate in the same direction but at slightly different rates separates slurry fed into the interior of the rotor into solids and liquid. An auger flight on t... | 10/16/2007 |
| 7282147 | Cleaning hollow core membrane fibers using vibration A filtration system is provided with hollow membrane filter elements operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and ultrasonic energy may be used to clean exterior portions of the hollow membrane filter elem... | 10/16/2007 |
| 7255670 | Three phase decanter centrifuge A three-phase decanting centrifuge is provided. Solids are removed from a slurry in the centrifuge in the conventional manner, as described above. The liquid separated from the slurry moves into a fluids reservoir. Centrifugal action classifies the fluids, with ligh... | 08/14/2007 |
| 7247133 | Decanter centrifuge with wear reinforcement inlet A decanter centrifuge has a hollow, rotatable drum with a screw conveyor comprising a core body (1), in which an inlet opening for material into the drum from an inlet chamber (3) is provided, the inlet opening having a delimitation surface (7) ... | 07/24/2007 |
| 7229399 | Screw conveyor for a decanter centrifuge A screw conveyor intended and formed for use in a decanter centrifuge for separation of solid particles from a fluid compound, comprising a central body, at least one conveyor thread and at least one baffle bridging a flow path formed between different parts of the ... | 06/12/2007 |
| 7189306 | Process of treating lignocellulosic material to produce bio-ethanol This invention relates to a process of treating a lignocellulosic material to produce bio-ethanol. The process includes the steps of: (a) exposing the lignocellulosic material to conditions including a pH not less than about 8, and steam at a first pressure, to prod... | 03/13/2007 |
| 7156801 | Decanter centrifuge with a screw conveyor having a varying pitch The decanter centrifuge comprises a screw conveyor having a body (4), which carries a screw comprising one or more flights (7, 7′) and having a nominal transport speed varying along the longitudinal axis. An inlet (6) is provided in the screw ... | 01/02/2007 |
| 7153255 | Screw centrifuge for the wet mechanical separation of solids A screw centrifuge for the wet-mechanical separation of a mixture of solids in a carrier liquid to produce sinks and floats, including a rotor which rotates about a horizontal axis, the rotor having a cylindrical wall and two conical walls, and a conveyor screw whic... | 12/26/2006 |
| 7083565 | Solid-bowl centrifuge having a disk stack on the drum cover The present invention is a solid-bowl screw centrifuge that includes a centrifugal drum. The drum has a drum casing and a screw with a screw body that is surrounded by a screw blade. The screw blade forms at least one screw spiral with a conveying path for transport... | 08/01/2006 |
| 7018326 | Centrifuge with impellers and beach feed A centrifuge for separating feed material into component parts, in one aspect primarily solid and primarily liquid parts, the centrifuge, in certain aspects, including a conveyor rotatably mounted in a rotatable housing, the conveyor having an interior and at least ... | 03/28/2006 |
| 6971525 | Centrifuge with combinations of multiple features A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation.... | 12/06/2005 |
| 6932913 | Method for vibration in a centrifuge A system and method for vibration in a centrifuge is disclosed. A centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a non-rotating sleeve. The fluid separation wall rotates around the axis of rotation and ... | 08/23/2005 |
| 6908423 | Screw for a solid-bowl centrifuge and a method of extracting oil using the centrifuge A screw for a solid-bowl screw-type centrifuge, comprising: a screw body having a circumference, a cylindrical section and a conical section; at least one screw blade surrounding the screw body several times and forming several screw spirals; a delivery path for con... | 06/21/2005 |
| 6790169 | Centrifuge with feed tube adapter Centrifuges and conveyor apparatuses for centrifuges, the conveyor apparatus, in one aspect, having a plurality of spaced-apart flight members spaced apart along the length of the conveyor apparatus, a plurality of support members extending between, and connected to... | 09/14/2004 |
| 6767461 | Separator A separator for separating particles entrained in a fluid is disclosed. The separator includes a sleeve adapted to be mounted over a rotatable shaft for forming a cavity therebetween, an inlet to the cavity, an outlet to the cavity and means for imparting a centrifu... | 07/27/2004 |
| 6615817 | Recycling system of wire saw abrasive grain slurry and centrifugal separators therefor A constitution comprises separated processing of an abrasive grain waste liquid into recycled abrasive grain and a fine abrasive grain mixed liquid in a first centrifugal separator, adding a fresh cutting liquid to the fine abrasive grain mixed liquid to ... | 09/09/2003 |
| 6241901 | Centrifuge with thickened-feed accelerator between inner and outer bowl sections A centrifuge has a hub and a first bowl section extending about the hub. The first bowl section has a given diameter at a downstream end of a heavy phase transport path along the first bowl section. The centrifuge further comprises a second bowl section h... | 06/05/2001 |
| 6206818 | Tile surfacing for a classifier or centrifuge scrool A wear and/or abrasive resistant tile e.g. for use on a scroll of a classifier, comprises a front, working face and a rear, mounting face defined by an upper face portion and a lower face portion spaced rearwardly from the upper face portion, the upper an... | 03/27/2001 |
| 6145669 | Centrifuge with cake churning A centrifuge includes a conveyor for moving cake along a cake flow path towards a cake discharge opening and further includes a baffle mounted to the conveyor and disposed along the cake flow path. The baffle is provided on an upstream side, facing substa... | 11/14/2000 |
| 6123656 | Decanter centrifuge A decanter centrifuge (1) has a rotor comprising a helical conveyor (2) and a drum (20). The conveyor (2) comprises a conveyor hub (3) and helical flights (4), and the drum comprises an inner shell (21) of steel and an outer shell (22) of fiber reinforced... | 09/26/2000 |
| 6059971 | Device and process for thickening and conveying waste water sludge The present invention relates to a device and a process for thickening and conveying waste water sludges, especially with a centrifuge. Here, the centrifuge has at least one lysis device for the breaking down of cells of organisms contained in the waste w... | 05/09/2000 |
| 6024686 | Decanter centrifuge with helical-rib baffle The decanter centrifuge has a bowl with a screw conveyor having a body (4) and a screw (7). Material to be separated into a light phase is supplied through inlet ports (6) in the body, and the heavy phase is discharged through discharge ports in the bowl ... | 02/15/2000 |
| 6004255 | Decanter centrifuge In a decanter centrifuge, which comprises an outer drum (1) and an inner drum (5) concentric therewith, the two drums being rotatable at different speeds around a common center axis, the inner drum (5) carries several blades (6, 7) arranged to convey axia... | 12/21/1999 |
| 5948256 | Centrifuge with cake churning A centrifuge includes a conveyor for moving cake along a cake flow path towards a cake discharge opening and further includes a baffle mounted to the conveyor and disposed along the cake flow path. The baffle is provided on an upstream side, facing substa... | 09/07/1999 |
| 5845764 | Wear element for screw presses or the like A wear element comprising a wear plate of a hard, typically ceramic material, locked in a dovetail recess of a bracket made of steel. The bracket consists of two initially separate parts comprising a respective one of the two inclined dovetail wedge surfa... | 12/08/1998 |
| 5792039 | Decanter centrifuge for separating feed suspension into fractions and method for operating same A decanter centrifuge for separating a feed suspension of a particular solid material in a liquid into two fractions, i.e. a heavy fraction containing heavy particles and a light fraction containing light particles, or no particles at all, is described. T... | 08/11/1998 |
| 5667681 | Flight tip extensions for centrifugal separator A vertical or horizontal centrifugal separator comprises a drive mechanism including a drive shaft. A flight assembly is attached to the drive shaft and is rotatably driven by it as is a screen assembly which includes a rotor that also is attached to the ... | 09/16/1997 |
| 5653673 | Wash conduit configuration in a centrifuge apparatus and uses thereof Centrifugal apparatus for the continuous separation of solids-liquid mixtures and the internal washing of separated solids is provided with one or more conduits to deliver washing liquid into centrifugally sedimented solids tumbling and suspending these s... | 08/05/1997 |
| 5584791 | Decanting centrifuges with improved compression A decanting type centrifuge comprising a bowl which rotates about a horizontal or vertical axis and contains a helical screw conveyor for separating a slurry fed to the bowl into its constituent solids and liquid, the scroll being arranged to rotate at a ... | 12/17/1996 |
| 5509882 | Decanter centrifuge having an offset conveyor flight to aid rinsing A liquid-solids separator, or centrifuge, of the type having a screw conveyor is provided with a series of offset conveyor flights. A spacer is positioned within the offset of the conveyor flights to form a channel therein. Rinse liquid is introduced into... | 04/23/1996 |
| 5429581 | Wear-resistant tile surfacing for a centrifuge conveyor A hard surfaced screw conveyor comprising a helical metal blade mounted for rotation about a longitudinal axis of the helix and radially extending to an end surface, the blade defining at least one female formation therein having a substantially dovetail ... | 07/04/1995 |
| 5403486 | Accelerator system in a centrifuge A liquid accelerator system for use in a centrifuge, the system comprising a conveyor hub rotatably mounted within a rotating bowl, the hub including an inside surface and an outside surface. At least one feed slurry or wash liquid passageway is disposed ... | 04/04/1995 |
| 5380434 | Centrifuge scroll with abrasion resistant inserts A scroll and screen centrifuge especially suited for processing abrasive materials in which the surfaces of the screw flights on the scroll members contain recessed abrasion resistant shields. The abrasion resistant shields have an upper exposed surface f... | 01/10/1995 |
| 5321898 | Centrifugal screen bowl dryer Rotary dryer having an enclosure surrounding a plurality of elongate blades positioned along an exterior portion of a fluid permeable sidewall. Rotation of the blades within the enclosure induces air to pass through the sidewall to improve drying characte... | 06/21/1994 |
