Rehabilitating Or Regenerating Filter Medium Patents (Class 210/791)
  • Publication number: 20130026111
    Abstract: A filtering system that may include a backwashing unit that is arranged to clean the filter when the filtering system operates in a backwashing mode; a first pipe that is couples the first auxiliary input to a first auxiliary output of the at least one auxiliary outputs; a second pipe that couples the second auxiliary input to a second auxiliary output of the at least one auxiliary output; wherein at least one of the first and second pipe comprises an external portion that is external to the input chamber, the intermediate chamber and the backwash chamber; wherein when the filtering system operates at the backwash mode, the backwash chamber maintains a backwash pressure that is lower than (a) an input chamber pressure that is maintained in the input chamber, and (b) an intermediate chamber pressure that is maintained within the filter.
    Type: Application
    Filed: May 22, 2012
    Publication date: January 31, 2013
    Inventors: Shmuel Gil, Itzhak Barzuza
  • Patent number: 8361313
    Abstract: Plant for treating the leftover liquids of mechanical processing, comprising a filtering partition (9) for filtration of the fluid and means for cleaning the partition by washing of the layer of mud deposited hereon, comprises vibratory means suitable for causing a generally fast and continuous vibratory state at least in the active portion of the partition. The plant comprises at least one chamber (6) that is divided into two parts by the filtering partition (9), one part being intended for the exit of the filtered fluid, means suitable for causing a generally fast and continuous vibratory state at least in the active portion of the partition are associated with said chamber. Method for treating the leftover fluids of mechanical processing, comprising filtration of the fluid through a filtering partition and periodic cleaning of the partition through washing of the layer of mud deposited here; it foresees that at least the surface of the partition on which the mud deposits is subjected to vibratory motion.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: January 29, 2013
    Assignee: P.M.P.O. S.R.L.
    Inventors: Fabio Pancaldi, Vanni Gallocchio
  • Publication number: 20130020264
    Abstract: There is disclosed a trash rake system for use in clearing debris from an intake screen of an intake trash rack of a water intake port of a water use facility. The intake screen is configured to collect debris transported by water, for example, a river, to prevent the debris from entering the intake port of the water use facility. The trash rake system includes a track system, a movable support structure, a rack and pinion drive mechanism, and a controller configured to receive signals from an encoder on a drive motor and a proximity sensor system.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 24, 2013
    Inventor: Thomas J. Reiss, JR.
  • Publication number: 20120318755
    Abstract: Water filters which comprise a multitude of discrete filter media elements in a chamber require periodic cleaning. However, the elements tend to become adhered to one another and to the interior surface of the chamber. The invention provides a water filter for use with ponds, comprising a filter chamber for containing filter media, and a first movable cutting member provided substantially immediately adjacent the interior wall of the chamber for movement across the surface of the interior surface of the wall to break the adherence of filter media to the interior wall.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 20, 2012
    Applicant: INTERPET LTD
    Inventor: Andrew Paxton
  • Publication number: 20120312022
    Abstract: A fuel system comprising a liquid fuel tank, an engine, and a coalescing filter adapted to separate water from fuel, the filter having an inlet fluidically connected to the fuel tank, a first outlet fluidically connected to a fuel feed system for the engine, and a second outlet fluidically connected to the fuel tank, wherein the coalescing filter is adapted to discharge fuel filtrate from the second outlet and filtrand from the first outlet. Also, a method of removing water or ice from a fuel tank, the method comprising directing a flow of fuel from a fuel tank to a coalescing filter adapted to separate water from fuel, discharging filtrand from a first outlet of the coalescing filter to a fuel feed system for consumption by an engine, and discharging fuel filtrate from a second outlet of the coalescing filter and returning the fuel filtrate to the fuel tank.
    Type: Application
    Filed: March 17, 2011
    Publication date: December 13, 2012
    Inventors: Joseph K-W Lam, Franklin Tichborne, David Parmenter, Simon Masters
  • Patent number: 8329045
    Abstract: A method for filtering water or wastewater including the steps of filtering by gravity through a stationary cloth filter media supported in a treatment basin by a structure forming an effluent plenum, and cleaning the media by backwashing.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 11, 2012
    Assignee: Aqua-Aerobic Systems, Inc.
    Inventors: Peter G. Baumann, Lloyd W. Johnson, David Smith, Eugen O. Bergmann
  • Patent number: 8324377
    Abstract: A water-soluble cellulose ether is separated from its suspension by passing a suspension of water-soluble cellulose ether particles in water through a filter of perforated metallic or ceramic filter medium under pressure, removing the filter cake of water-soluble cellulose ether from the filter medium, and cleaning the filter medium with steam, compressed air or water under pressure. The invention enables to separate a water-soluble cellulose ether, especially having a high dissolution temperature, avoids the filter from being clogged, and extends the operative time of the filter.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: December 4, 2012
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Kazuhisa Hayakawa, Shinichi Kurotani, Mitsuo Narita
  • Patent number: 8323499
    Abstract: Biologically treated wastewater is directed as mixed liquor from a treatment tank to a downstream filtration tank having a having a submerged membrane module extending across the cross-sectional area of the filtration tank. Mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. A permeate stream is produced. A portion of a non-permeate stream is recirculated to the treatment tank. The filtration tank is sized such that there is no substantial recycle of mixed liquor in the filtration tank. Once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled to the treatment tank and generally not permitted to be recycled through the membrane module without first returning to the treatment tank.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: December 4, 2012
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Hong W. Zhao, Martin Brockmann, Heribert Moeslang, Pierre Girodet
  • Patent number: 8318021
    Abstract: A water or liquid substance filtration device is disclosed which removes microorganisms and organic contamination and sterilizes the containers and water lines after the unit. The unit is portable, or can be mounted stationary. The unit has a five-stage filtration and sterilization system controlled by an independent onboard computer system that can link to a central computer system to keep track of all independent units. The unit will physically filter out of the water contaminants that can be reused, destroyed, or flushed down a safe drain. It can also be modified to filter for a certain size of particulate, making recovery of certain substances possible. The unit has a self-diagnostic system that can determine if the unit is operating properly and can shut down a part thereof if one of the capillary units fails. The system is hydrophilic, can run at low pressures and can be designed from low to extremely high volumes. The unit uses ozone to disinfect containers and water lines.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 27, 2012
    Inventor: John A. Armour
  • Patent number: 8313649
    Abstract: A method of starting up a filtration plant for the filtration of a process liquid, after cleaning of the filtration plant, and a filtration plant which is arranged to be able to started up in accordance with this method. A secondary liquid supply unit connected to the post-treatment equipment during the starting up of the plant provides a flow of e.g. sterilized water to the post-treatment equipment, so that this can be held in a condition in which it is ready for operation. Thereafter, the process liquid is led to the filtration equipment, and the flow of liquid from the secondary liquid supply unit to the post-treatment equipment is shut off when a flow of filtered process liquid is obtained, and which thereafter replaces the liquid from the secondary liquid supply unit.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: November 20, 2012
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Svend Emil Himmelstrup Hansen
  • Patent number: 8302780
    Abstract: An industrial separator and dewatering plant has a filtering portion using an inclined conveyor belt for carrying away a watery cake from an aqueous mixture containing solid matter. The filtering portion further has a wash water spray nozzle directed at the conveyor belt so as to dislodge the watery cake penetrated within the conveyor belt. A dewatering portion has a compression auger screw positioned for receiving the dislodged watery cake and the wash water. An auger screw receives the wash water and cake which is transported to a compression cage where compression drives water out of the cake leaving a semi-solid cake which is pressed against a door where it exits the plant.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 6, 2012
    Assignee: M2 Renewables, Inc.
    Inventors: John Christopher Mitchell, Ken M. Stedman, Glenn Edwin Walser
  • Publication number: 20120255918
    Abstract: The present invention relates to a water treatment system that uses rhamnolipids to prevent fouling and bio-film formation on the membrane and equipment and the method thereof.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 11, 2012
    Inventors: Keith DeSanto, Donald R Keer
  • Patent number: 8282828
    Abstract: A method and a system for regenerating a body fluid, such as a peritoneal dialysis fluid. The body fluid is removed into an extracorporeal circuit comprising an electrofilter for removing charged ions from the body fluid, a nanofilter for removing large molecules, such as Dextran 40, and a reverse osmosis filter for concentrating the body fluid, for producing a synthetic urine to be discarded. The removed ions and large molecules are returned to the patient together with pure water from the reverse osmosis filter through an ultrafilter.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: October 9, 2012
    Assignee: Triomed AB
    Inventor: Anders Wallenås
  • Patent number: 8276605
    Abstract: A device (11) for cleaning a pleated filter element, the device having; a body, a fluid inlet (13), a work face (14) having at least one pleat separating projection (19) and at least one fluid outlet (22) for directing fluid between pleats separated thereby.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: October 2, 2012
    Assignee: Pool Systems Pty Ltd.
    Inventors: Warwick Heathcote, Jeremy Smith
  • Publication number: 20120234775
    Abstract: A pressure filter for treating liquor suspensions of a cellulose pulp mill, the pressure filter including a container having tubular filtering elements suspended in a horizontal plate, through which elements filtrate flows and the interior of which communicates with a filtrate chamber located above. The filtering elements collect on their outer surface precipitate that is arranged to be periodically removed by making the filtrate in the filtrate chamber travel counter-currently through the filtration surface of the filtering elements. The filtering elements are cleaned by wash liquid passing from the filtrate chamber into the filtering elements and through their filtration surface. The interior of the filtering elements is provided with a flow distributor above the middle of a filtering element for distributing the flow from the filtrate chamber onto the filtration surface of the filtering element.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 20, 2012
    Applicant: ANDRITZ OY
    Inventors: Ilkka HOLOPAINEN, Jari PAYKKONEN
  • Publication number: 20120228239
    Abstract: A filter device operating method involves a plurality of filter elements (21) received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid. Flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43) actuated by a hydraulic piston (53) and blocks the fluid connection so quickly, a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21). The feeding effect increases the cleaning of pollution on the filter element (21), achieving an improved backwashing cleaning.
    Type: Application
    Filed: May 16, 2012
    Publication date: September 13, 2012
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Bernhard Schlichter
  • Publication number: 20120228235
    Abstract: The present invention describes a method and system for purifying water. The method includes filtering water in one or more filtering units. A filtering unit is configured within a tank of one or more tanks that collects the filtered water. The filtered water is then re-filtered by one or more filter turbines to obtain re-filtered water. The re-filtered water is then purified by one or more treatment units. A treatment unit is connected to a filter turbine. In an embodiment of the invention, the water purified may be a ballast water present in a water vessel.
    Type: Application
    Filed: June 16, 2010
    Publication date: September 13, 2012
    Inventor: Virendra J. Mehta
  • Patent number: 8262911
    Abstract: A method for treatment of sludge with a facultative-organism-adapted membrane bioreactor by providing a sludge treatment system comprising a facultative digestion tank, a membrane module, an aeration system, a sludge pump, and a drainage pump, pumping sludge into the facultative digestion tank via the sludge pump and allowing for digestion, synchronously aerating and scouring the membrane module by the aeration system, pumping the sludge by the drainage pump and filtrating by the membrane module so that sludge and water are separated, and draining the water via the drainage pump. The method can digest sludge completely in the digestion tank, and solves problems existing in conventional sludge treatment methods such as large investment and high transportation cost, even achieves a subject of zero discharge of sludge.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: September 11, 2012
    Assignee: Jiangxi JDL Environmental Protection Research Ltd.
    Inventors: Zhimin Liao, Jianzhong Xiong, Shengyun Yang, Jialin Zhou, Xingfu Jiang, Lingyun He, Qihu He, Dejin Ju, Aiguo Wan, Zhihua Yuan, Jiejun Cao, Kun Tao
  • Publication number: 20120223028
    Abstract: A suction nozzle assembly, comprising a tube coupled to a pressure sink at a distal side thereof, a nozzle, a resilient element which couples said nozzle to a proximal side of said tube and a deformable housing which bridges a gap between said proximal side of said tube and said nozzle. Optionally, a pressure equalizer, for example, a through aperture, is formed in said nozzle.
    Type: Application
    Filed: November 11, 2010
    Publication date: September 6, 2012
    Applicant: Filter Safe Ltd.
    Inventor: Etai Dagan
  • Patent number: 8252184
    Abstract: The present invention relates to a membrane separation method and a relevant equipment, in particular to a method and an equipment for membrane separation utilizing concentration polarization during membrane filtration process, especially, to a concentration process and equipment and a drawer special for drawing a concentration polarization layer. The direct removal of the concentration polarization layer from membrane surface not only decreases the adverse influence of concentration polarization on membrane separation but also obtains concentrated retention components, thereby significantly improving the ability to maintain membrane flux, solving the twinborn problems concerning concentration polarization and membrane fouling during the membrane separation process, and achieving a high-efficiency concentration for retention components.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: August 28, 2012
    Assignee: Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Yinhua Wan, Xiangrong Chen, Zhiguo Su, Guanghui Ma, Xiaoguang Jiao, Fei Shen, Zhanfeng Cui
  • Publication number: 20120211443
    Abstract: Methods and apparatus for filtering particulate matter from a liquid are provided. The apparatus comprise: a housing defining an internal volume; a liquid inlet port; a liquid outlet port disposed above the liquid inlet port; a filter medium support membrane housed within the housing and disposed between the liquid inlet port and the liquid outlet port; and a particulate filter medium loaded onto the filter medium support membrane. The apparatus are designed such that a flow of liquid introduced into the internal volume of the housing through the liquid inlet port and exiting the internal volume of the housing through the liquid outlet port will pass upward through the filter medium support membrane.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 23, 2012
    Inventor: Steven C. Suchanek
  • Patent number: 8246844
    Abstract: A method of folding a filter bag 10 made from a nonwoven fabric or stiff media to facilitate installation within a filter retainer basket and a folded filter bag 10 arrangement.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: August 21, 2012
    Assignee: Eaton Corporation
    Inventor: Mark Anthony Quintel
  • Patent number: 8231794
    Abstract: A water filtration system (60, FIG. 2) wherein pressured feed water (water with impurities to be filtered out) passes downstream from an upstream end of a passage (66) through a filter arrangement (74) in the passage, to a filtrate storage region (82), during filtrate production. Pressured water, such as at 50 psi (3 bars) from a tap water source (110), provides the pressured feed water during filtrate production, and also pressurizes the filtrate during backflushing. A filtrate pressurizing apparatus (90) includes a movable member or piston (92) that lies in a chamber (94), and that has a feed side (134) that is pressurized by tap water during a backflush and that has a filtrate side (132) that presses against filtrate, the feed side having a larger diameter (D2) than the filtrate side (D1) to produce an increased pressure during backflushing.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: July 31, 2012
    Assignee: SpinTek Filtration, Inc.
    Inventor: Jason D. Gilmour
  • Publication number: 20120187054
    Abstract: A filter device may include a filter unit including a first electrode and a second electrode that are arranged so as to be spaced apart and opposite to each other. At least one of the first and second electrodes may include an electrode material layer that is electrically conductive. The electrode material layer may include a metal-adsorbing material (metal adsorbent). A voltage applier for applying voltage to the first electrode and the second electrode for a desired amount of time based on the conditions after operation of the filter unit, and a method for driving the same.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 26, 2012
    Inventors: Chang Hyun Kim, Hyun Seok Kim, Hyo Rang Kang, Jae Eun Kim, Ho Jung Yang, Joo Wook Lee
  • Patent number: 8210042
    Abstract: A spiral wound module assembly comprising: a permeate collection tube, at least one membrane envelope wound about the permeate collection tube, an outer module housing, and at least one acoustic transducer located adjacent to the permeate collection tube. Several embodiments are disclosed including a stand-alone probe adapted for insertion into the permeate collection tube. In several other embodiments, one or more transducers are secured to the inner surface of the permeate collection tube.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: July 3, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: William E. Mickols, Michael S. Koreltz, David J. Moll, Donald B. Streeter
  • Publication number: 20120160783
    Abstract: The water filtration device and method introduce raw water into a filtration barrel where the water is purified by filter elements inside the filtration barrel. A main frame is set up in the filtration barrel and a driving motor is mounted on the main frame. The driving motor engages a holding rack inside the main frame to spin at high speed. Filter elements are stacked and interleaved on the holding rack. When the filter elements require cleaning to remove the attached contaminants from the raw water, filter elements are rotated at high speed along with the holding rack so that the contaminants are thrown off by the centrifugal force. When the filter elements are cleaned, the high-speed rotation of the filter elements could be stopped and the filtration process could be continued or terminated.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 28, 2012
    Inventor: CHUN-MIN LIU
  • Patent number: 8206598
    Abstract: An adapter for the purging of lines is described that comprises a plate and an attachment mechanism. The plate includes a first side and an opposed second side that are connected by at least one edge. The plate has a first interface defined on the second side that is adapted to connect to a portion of a cap of a filter assembly in a close fitting relation. The first interface is also adapted to define an interior space between the portion of the cap and the plate. The interior space is in fluid communication with a first line that is connected to the filter assembly. The attachment mechanism secures the plate and the portion of the cap in the close fitting relation. The plate includes a second interface that is adapted to connect to an external source of pressure. The second interface is in fluid communication with the interior space.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: June 26, 2012
    Inventor: Gregory Wulffen
  • Publication number: 20120152861
    Abstract: A multi-stage method of reducing solids and contaminants from liquid waste and other suitable streams without the use of chemical flocculants or polymers is disclosed.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 21, 2012
    Inventors: Jay Vanier, Rick Simmons, Bryan Thibodeaux
  • Publication number: 20120152862
    Abstract: A non-blocking filtration system wherein the suspension filtered continuously scrubs the filter, keeping it free of deposits of solid deposits while the filtrate is removed in a variety of biological and chemical applications, substantially reducing the cost of unit operations.
    Type: Application
    Filed: February 23, 2012
    Publication date: June 21, 2012
    Applicant: Therapeutic Proteins International LLC
    Inventor: Sarfaraz K. Niazi
  • Patent number: 8201697
    Abstract: A variety of improved hydroclone based fluid filtering systems are described. The hydroclones generally include a tank having an internal chamber and a filter (preferably a surface filter) that is positioned within the internal chamber. The filter defines a filtered fluid chamber within the internal chamber of the tank. The hydroclone may be operated such that a vortex of flowing fluid is formed between the chamber wall and the filter with the filter being located in the center of the vortex. With this arrangement, the filter acts as a cross-flow filter. In one aspect of the invention, the filter is a stepped filter. In another aspect of the invention, the filter is an surface filter, as for example, an electroformed metal surface filter. In some preferred embodiments, the openings in the filter are arranged as slots that extend substantially vertically so that they are oriented substantially perpendicular to the flow path of fluid flowing in the adjacent portion of the vortex.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: June 19, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: David J. Levitt, Frank Dutro
  • Patent number: 8192625
    Abstract: A jet aeration apparatus for aerating a membrane bioreactor has a jet aerator and an air supply pipe. The jet aerator is disposed in the membrane bioreactor and includes a water inlet, a pump disposed below a liquid surface of the membrane bioreactor, an air inlet pipe whose air inlet is disposed above the liquid surface of the membrane bioreactor, and a jet pipe having a jet nozzle. The air supply pipe includes a connector; and the connector of the air supply pipe is connected to the jet nozzle of the jet pipe of the jet aerator. A method of using the jet aeration apparatus is also provided. The jet aeration apparatus is easy to install, quiet in operation, and features a high degree of integration.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: June 5, 2012
    Assignee: Jiangxi JDL Environmental Protection Research Ltd.
    Inventors: Zhimin Liao, Jianzhong Xiong, Shengyun Yang, Jialin Zhou, Xingfu Jiang, Lingyun He, Qihu He, Dejin Ju, Aiguo Wan, Zhihua Yuan, Jiejun Cao, Kun Tao
  • Publication number: 20120132597
    Abstract: A filtration and monitoring system includes an online monitoring device and a filter block having a chamber therein. An inlet pipe provides fluid to the filter block chamber and has an inlet valve located therein configured to shut off the flow of the fluid through the inlet pipe. An outlet pipe removes fluid from the filter block chamber. A filtered fluid conduit fluidically connects the filter block with the monitoring device. The outlet axis of the outlet pipe is offset from the inlet axis of the inlet pipe such that the fluid undergoes a change of direction while passing through the filter block chamber thereby causing turbulent flow within the filter block chamber. The turbulent flow within the filter block sweeps off particles that accumulate on the filter block chamber-side of the filter element to reduce the buildup of filter cake on the filter element.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Inventors: Mikhail Byalskiy, Brian Link
  • Patent number: 8187471
    Abstract: A method of operating an irrigation system includes providing a flow of irrigation water, forming a flow of filtered water by removing particulate matter from the flow of irrigation water by using a filter, and directing a first portion of the flow of filtered water to a control valve. The method also includes directing a second portion of the flow of filtered water to a pressure regulator, delivering a flow of water from the pressure regulator to one or more irrigation devices, and automatically cleaning the surface of a filter upon activation or deactivation of the irrigation system.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: May 29, 2012
    Assignee: Rain Bird Corporation
    Inventor: George Henry Lockwood
  • Publication number: 20120125867
    Abstract: A flushable filter for use in filtering water in a chemical dispensing system has a screen selectively placed in a water flow passage with water flowing from one side of the screen therethrough to a separate side and then to a filtered water outlet. In a flush mode, water is directed along and past the one side of the screen to flush filtrates therefrom and to a flush water discharge outlet.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 24, 2012
    Applicant: Delaware Capital Formation, Inc.
    Inventor: BRYAN ANDERSEN
  • Publication number: 20120103920
    Abstract: A filtration apparatus which has a filtration chamber, and the filtration chamber has a fluid inlet, a filtered fluid outlet, a residue outlet, and a filtering element. The filtering element is situated between the fluid inlet and the filtered fluid outlet. The apparatus also includes a wiping member which is situated within, or about, the filtering element and which is adapted to wipe the surface of the filtering element. The wiping member also wipes any residue toward the residue outlet when the apparatus is in use. The filtration apparatus includes a first pumping configured to create a flow toward the filtering chamber, and a second pumping situated within the filtering chamber and configured to induce a counter-flow back toward the first pumping.
    Type: Application
    Filed: July 1, 2010
    Publication date: May 3, 2012
    Inventor: Gregory Richard Morgan
  • Patent number: 8153012
    Abstract: The invention relates to a device for filtering a fluid, in particular a liquefied plastic, with a housing with backflush channel and screen carrier and filter element whereby, in order to accelerate and improve the backflush effect, one or more displacement cylinders are provided that guide material removed from the production at adjustable high pressure and speed to the screen to be cleaned from the clean screen side to the dirty screen side, whereby an additional pressure generator ensures constant process pressure.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 10, 2012
    Assignee: Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG
    Inventors: Stefan Woestmann, Dirk Bussmann
  • Publication number: 20120074074
    Abstract: A self-cleaning screen system and method removes contaminants from a fluid passed through a screen of the self-cleaning screen system. The self-cleaning screen system includes a cleaning mechanism used to remove contaminants which may have adhered to the screen. The self-cleaning screen system is self-powered by extracting energy from the fluid flow to cause rotation or other movement of either the screen and/or the cleaning mechanism.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 29, 2012
    Applicant: Palo Alto Research Center Incorporated
    Inventors: Meng H. Lean, Armin R. Völkel, Ashutosh Kole, Kai Melde, Huangpin Ben Hsieh
  • Patent number: 8128829
    Abstract: Cross flow filter device comprising a longitudinal first filter element (1) having a first width (w1) and a longitudinal central axis (8), a longitudinal second filter element (2) having a second width (w2) and being longitudinally installed substantially concentrically inside said first filter element (1), a housing (3) surrounding said first filter element (1), said cross flow filter device having respectively a raw material inlet (4), a concentrate outlet (5), and a first filtrate outlet (6) connected to said first filter element (1). The ratio between the second width (w2) and the first width (w1) is 65%, preferably at least 70% and more preferably about 75%.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: March 6, 2012
    Assignees: Bekaert Advanced Filtration
    Inventors: Martin Eurlings, Philippe Albert, Stefan Vandendijk
  • Patent number: 8123819
    Abstract: Systems and methods for dry cleaning articles using siloxane solvents are provided. In the systems and methods according to the present invention, the siloxane solvent suspends impurities extracted from the articles being cleaned, and the system filters off the impurities, thereby cleaning the articles.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: February 28, 2012
    Assignee: GreenEarth Cleaning, LLC.
    Inventors: James E. Douglas, Wolf-Dieter R. Berndt
  • Patent number: 8110114
    Abstract: A method for maintaining an efficiently working fuel system comprising: passing the fuel through a first filter of a multiple filter controller; monitoring a level of pressure established within the multiple filter controller as the fuel passes through the first filter, wherein monitoring comprises providing a pressure gage; detecting when the level of pressure has reached a predetermined level, wherein such detecting comprises providing a vacuum switch; redirecting the fuel from the first filter to a second filter when the predetermined level of pressure has been detected, wherein redirecting comprises manipulating an inlet valve of the multiple filter controller such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: February 7, 2012
    Inventor: Andrew D. Keenan
  • Publication number: 20120024801
    Abstract: A household laundry dryer has at least one filter container which includes a chamber with an inlet for condensate water to be cleaned. The chamber has a first outlet, a second outlet and a filter element which is arranged between the inlet and the first outlet and which divides the chamber into an inlet-side first chamber part and a second chamber part. The filter container can be configured in such a way that the inlet is arranged below the filter element and the filter element is arranged below the first outlet, and the second outlet opens into the first chamber part. Particles deposited on the filter element by water being pushed through the inlet into the chamber are detachable from the filter element by water flowing back into the chamber, when no water is being pushed through the inlet, and removable through the second outlet.
    Type: Application
    Filed: April 15, 2010
    Publication date: February 2, 2012
    Inventors: Klaus Grunert, Frank Kohlrusch, Andreas Ziemann
  • Publication number: 20110315641
    Abstract: The invention relates to a method and apparatus to continuously monitor and control acoustic energy and vacuum pressure to maintain a net unidirectional flow of multi-phase heterogeneous fluids through a porous filter or membrane. The heterogenous fluid may come form a variety of sources including biological sources such as, blood, bone marrow aspirate (BMA), adipose tissue (lipoaspirate), urine, saliva, etc.
    Type: Application
    Filed: July 24, 2009
    Publication date: December 29, 2011
    Applicant: SMITH & NEPHEW PLC
    Inventors: Stephen John Curran, Jonathan Nicholas Ridgway, Pei-Sheng Chen, Michael Pratt, Marc Tanner, Stephen Latham, Nick Reback
  • Patent number: 8083952
    Abstract: A support for supporting and positioning a filter bowl of a filter system may include a bracket body, a rod, an extension arm threadably connected to the rod and a support band connected to and rotatable with respect to the extension arm. The bracket body may include a top plate. The top plate may include an opening for receiving the rod. The rod may be rotatably positioned in the opening in the top plate and extend from the top plate in a direction away from the top plate of the bracket body. The extension arm may be operable to extend from the bracket body or retract towards the top plate of the bracket body when the rod is rotated. The support band may be configured for attachment to the filter bowl of the filter system.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: December 27, 2011
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Hughie C. Cole
  • Publication number: 20110309038
    Abstract: A filtering device uses a filtration unit for filtering raw water, and the filtration unit has a depth filter forming a filtration membrane thereof and a housing accommodating the depth filter. The housing includes a raw water inlet port for supplying the raw water to the depth filter, a filtrate water outlet port, a gas-supplying port for supplying compressed air into the filtration unit to clean the depth filter, and a drain port for discharging the compressed air together with the raw water. A pore diameter of the filtration membrane is designed within a range of 1 to 25 ?m. The filtering device includes a filtrate water supplying passage connected to the filtrate water outlet port, a discharge passage connected to the drain port, a communication passage for communicating filtrate water supplying passage with the discharge passage, and a motor valve for opening and closing the communication passage.
    Type: Application
    Filed: February 12, 2010
    Publication date: December 22, 2011
    Applicant: Kuraray Co., Ltd.
    Inventor: Keido Inoue
  • Publication number: 20110309039
    Abstract: A pre-separator for a screw press separator wherein the pre-separator increases the concentration of solid material in a water solid material mixture. The pre-separator is configured to have a frustoconical screen surface where a plurality of wiper blades engage the interior portion of the surface to provide de-watering action, and the plurality of blades are configured to reposition with respect to the center axis of the frustoconical surface to allow for engagement between the interior surface of the frustoconical screen, and the wiper blades.
    Type: Application
    Filed: August 2, 2011
    Publication date: December 22, 2011
    Applicant: DARITECH, INC.
    Inventor: David DeWaard
  • Publication number: 20110297625
    Abstract: A filter configured to separate the solid components and the liquid components from a slurry. The filter includes a plurality of filter plate assemblies that cooperate to define a plurality of filter chambers, each defining a perimeter having an open section when the filter plates are in a closed position relative to one another. Each filter plate assembly includes a closure configured to close the open section. Preferably, the closures are movable to an open position to permit a particulate cake to be removed from the filter chambers without separating the filter plates.
    Type: Application
    Filed: August 15, 2011
    Publication date: December 8, 2011
    Inventor: Sean R. Duby
  • Patent number: 8070948
    Abstract: A description is given of a sewage treatment plant, in particular a small sewage treatment plant, having at least one activation tank for wastewater and/or having at least one secondary clarification tank for wastewater, wherein the activation tank and/or the secondary clarification tank are charged with shaped bodies which are freely floating in the wastewater, which is distinguished in that it has at least one filtration appliance for wastewater purification, which filtration appliance comprises at least one ceramic-based membrane for separating off microorganisms.
    Type: Grant
    Filed: February 17, 2007
    Date of Patent: December 6, 2011
    Assignee: ItN Nanovation AG
    Inventors: Gerhard Braun, Kay Gunther Gabriel
  • Patent number: 8057685
    Abstract: A solid separator that uses a rotating screen, having spiral guides at its outer portion, over which a plurality of spiral-shaped scrapers are suspended. An inlet distributor including a plurality of apertures distributes a contaminated liquid flow over the screen, when rotated, permits the scrapers and guides to drive the deposited debris towards an outer edge of the screen and up a slight conical ramp and into a debris discharge sump. A level sensor may be included above the screen to activate the screen rotation based on the level of the contaminated liquid flow above the screen. An alternative embodiment uses individual scraper supports having respective jack mechanisms that permit the operator to independently lift and even rotate each scraper for additional cleaning or service. The alternative embodiment uses an assembly of two screens having an outer portion that also includes a slight conical ramp having spiral guides thereon.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: November 15, 2011
    Inventor: David A. Laing
  • Patent number: 8052878
    Abstract: A method for filtering out foreign particles from a cooling lubricant used in a process of machining a workpiece includes providing an inherently stable, flow-porous filter element. The filter element comprises a porous main body made of joined plastics particles and having an afflux surface and a porous coating on the afflux surface for surface filtration. The porous coating first component particles and/or fibres, second component anti-adhesion particles to mitigate the adhesion of filtered out material to the porous coating and to facilitate cleaning of the filter element, with the first component particles and/or fibres and the second component particles being mixed in the porous coating, a solidified inorganic binder, and a set adhesive. The solidified inorganic binder and the set adhesive bind the first component particles and/or fibres and the second component particles to each other and to the porous main body.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 8, 2011
    Assignee: Herding GmbH Filtertechnik
    Inventors: Stefan Hajek, Urs Herding, Kurt Palz, Wolfgang Raabe, Reiner Thuerauf, Bernd Meindl
  • Patent number: 8052879
    Abstract: A filter system and associated methods of filtering utilize a combination of ultrasonically enhanced backwashing and a modified filter media configurations for increasing the specific loading on a portion of the filter media, thereby tending to increase the total particulate holding capacity of the improved filter. Depending on factors such as the filter configuration, the particulate size distribution and the differential pressure that can be maintained across the filter, it is expected that the particulate holding capacity can be more than doubled relative to a conventional filter having similarly configured filter media.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: November 8, 2011
    Assignee: Dominion Engineering, Inc.
    Inventors: David J. Gross, David Arguelles