Backwash Or Blowback Patents (Class 210/411)
  • Publication number: 20130256236
    Abstract: The invention is directed to a purifying device for sludge under water and a method for operating the same. The device includes a main fixing frame having an accommodating portion assess to the outside, a hollow liquid container in the accommodating portion, wherein the liquid container is provided with a liquid-flow hole and at least a backwash hole, multiple filters on the liquid container, and a pump connected to the liquid-flow hole at the liquid container through a liquid pipeline. The method includes steps: moving the liquid container having the filters to an area having a liquid to be filtered; leading the liquid to flow into the liquid container through the filters filtering out solid particles contained in the liquid; and leading a fluid to flow into the liquid container such that the filters can be backwashed accompanying with an external cleaning device if the filters are clogged.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 3, 2013
    Inventors: Chun-Ping Huang, Jamie Liao
  • Patent number: 8540079
    Abstract: A sludge filtration apparatus has a sludge tank configured to store sludge and at least one filter assembly. The filter assembly includes a filtration membrane for filtering the sludge and a pipe insertable in the filtration membrane to supply air to a secondary side of the filtration membrane for dislodging the sludge from the filtration membrane. The pipe has a plurality of holes for discharging gas, namely air, to an area in which the filtration membrane inclines downwardly with the secondary side thereof. The sludge filtration apparatus can prevent thickened sludge from remaining in an upper portion of the filter assembly.
    Type: Grant
    Filed: October 21, 2007
    Date of Patent: September 24, 2013
    Assignee: Metawater Co., Ltd.
    Inventors: Koji Yoshida, Mikimasa Yamaguchi
  • Patent number: 8524075
    Abstract: A fluid pressure vessel has a filter cartridge with spaced headers positioning cylindrical pleated filter media. The headers form an inlet chamber communicating with the inlet upstream side of the filter media and an isolated outlet chamber communicating with the downstream side of the filter media. A hollow piston with a toothed periphery having a circumferential slot is positioned closely adjacent the upstream side of the filter media. The piston hollow communicates with a drain chamber isolated from the inlet and outlet chambers. Upon opening of the drain chamber to atmospheric pressure, the pressure in the piston hollow and slot causes a lower pressure in a localized area of the media and back flushing of trapped material on the upstream side of the media to the drain chamber. An actuator is connected to selectively progressively move the piston and slot along the entire surface of the media.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 3, 2013
    Assignee: Eaton Corporation
    Inventor: Mark Anthony Quintel
  • Patent number: 8517182
    Abstract: A reflux backwashing mechanism for automatic fluid filtration, includes a hollow shaft sleeve (12) is located inside of the fluid inversion chamber (2); a blade (11) and a baffle plate (10) are connected with the hollow shaft sleeve (12) which is provided with an opening (9) at a position of the lower part of the baffle plate (10); a hollow core shaft (13) with an upward opening is located inside of the hollow shaft sleeve (12); and the shaft wall of the hollow core shaft (13) is distributed with through holes (14); and the hollow core shaft (13) is installed on an upper baffle plate (4).
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: August 27, 2013
    Inventors: Ye Zheng, Peng Zheng
  • Publication number: 20130213905
    Abstract: An unclogging filter apparatus has an irrigation outlet and a flushing outlet. A filtering element moves between at least an operational position and a flushing position. When the filtering element is in the operational position substantially all of the fluid flowing into the apparatus is directed out the irrigation outlet, while the filtering element is disposed for removing a particle from the fluid flowing into the apparatus. When the filtering element is in the flushing position, the filtering element is disposed for flushing the particle out the flushing outlet.
    Type: Application
    Filed: October 25, 2011
    Publication date: August 22, 2013
    Inventor: Amir Cohen
  • Patent number: 8512568
    Abstract: A method of cleaning a membrane filtration module (6), the module (6) including at least one membrane (8) located in a feed-containing vessel (7), the membrane (8) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprising the steps of: suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter therefrom into liquid surrounding the membrane (8); performing a high velocity sweep of the feed-containing vessel (7) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation. An improved gas scouring method is also disclosed.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: August 20, 2013
    Assignee: Siemens Industry, Inc.
    Inventors: Fufang Zha, Anthony James Stubbs
  • Patent number: 8506667
    Abstract: Certain embodiments of the invention may include filters and methods for imparting structural support to a pleated filter material. According to an example embodiment, the method includes forming a filter structure from one or more sections of pleated filter media, wherein the filter structure comprises one or more filter pleats. The method also includes extruding a banding material to form one or more radial support regions in at least circumferential contact with at least one of an inner or an outer surface of the filter structure, and maintaining spacing between the one or more filter pleats of the filter structure with the one or more radial support regions.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: August 13, 2013
    Assignee: General Electric Company
    Inventors: Przemyslaw Krzysztof Nikolin, Jamison William Janawitz, Jason Mei
  • Patent number: 8501013
    Abstract: A system is provided for water purification for a recirculation shower in a transport with a filtration unit, a first backwash line and a second backwash line. The filtration unit is designed to filter used shower water. The first backwash line and the second backwash line are designed to clean the filtration unit with a backwashing. The first backwash line is designed to convey backwash water to the filtration unit. The second backwash line is designed to discharge backwash water from the filtration unit.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: August 6, 2013
    Assignee: Airbus Operations GmbH
    Inventors: Simone Guttau, Christiane Lindauer
  • Publication number: 20130168330
    Abstract: The invention relates to a process for filtration of fluids, especially of aqueous media, by means of a backflush filter apparatus consisting of a cylindrical housing, a cylindrical and perforated support body installed coaxially therein, a filter material, a support fabric, and a mobile backflush device present therein, said process enabling improved removal of fine and ultrafine particles, and of particles with greasy or compressible consistency, and allowing higher solid concentrations. The process according to the invention has the steps below. a) Formation of a filtercake in the perforation of the support body; b) deposition of the relatively fine particles or of the particles with greasy or compressible consistency on or in the filtercake; c) backflushing after attainment of the predefined filter loading or of the maximum permissible pressure differential, or when the filtrate volume flow goes below a minimum.
    Type: Application
    Filed: March 10, 2011
    Publication date: July 4, 2013
    Applicant: LENZING TECHNIK GmbH
    Inventors: Stefan Strasser, Roman Grösswang, Johannes Kneissl, Georg Eisl, Klaus Brandt
  • Publication number: 20130161252
    Abstract: Disclosed is an arrangement of distribution columns that can be used to discharge the declogging fluid from a filter with automatic declogging or backwashing. A stationary divider is arranged coaxially in a stack of filter elements and has distinct ducts, e.g. embodied by fins, the ducts establishing communication between a rotary distributor and groups of passages in the stack that are in alignment along generator lines of the stack.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 27, 2013
    Applicant: ALFA LAVAL MOATTI
    Inventor: Jean-Claude Chrupalla
  • Publication number: 20130134086
    Abstract: A filter system having a filter bed for filtering water or wastewater, where the filter bed is periodically washed between service runs by directing washing liquid and washing gas upwardly through the filter bed. The filter system includes a filter bed and at least one flume. The flume is in fluid communication with the filter bed. Preferably, the flume is configured such that no washing liquid and washing gas interface is present in the flume. The flume may be configured such that during washing of the filter bed between service runs the flume receives a washing gas and directs the washing gas upwardly through the filter bed to assist in cleaning the filter bed between service runs. The flume may further be configured such that during washing the only liquid directed from the flume to the filter bed is residual liquid that may be present in the flume from a prior service run.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 30, 2013
    Applicant: RG DELAWARE, INC.
    Inventor: RG DELAWARE, INC.
  • Publication number: 20130118999
    Abstract: A self-clearing filter for filtering a fluid, the self-clearing filter comprising a filter wall having a lumenous side and an external side and a pump for creating a flux of the fluid to impinge against the external side of the filter wall. Methods for filtering a fluid by diverting a portion of the fluid flux to impinge against the filter.
    Type: Application
    Filed: January 10, 2013
    Publication date: May 16, 2013
    Applicant: ECKMAN ENVIRONMENTAL CORPORATION
    Inventor: Eckman Environmental Corporation
  • Patent number: 8419935
    Abstract: The present invention discloses a method and apparatus for separating particles and dissolved matter from an untreated fluid stream. Specifically, the present invention includes a first pressure source which transports untreated fluid or contaminated aqueous fluid into a separator annulus with a filter element disposed therein. The untreated fluid is placed under appropriate pressure sufficient to produce turbulent flow, increased particle kinetics and/or cavitation allowing the desired fluid to penetrate and pass into and through the filter media. The treated fluid is then transported to a collection tank. The contaminant matter retained by the filter media may be removed by the nearly instantaneous reverse pressurization of the separator annulus by a second pressure source thereby removing the contaminant particles away from contact with the filter media, and which may then be transported to a waste collection tank or a separator for further treatment.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 16, 2013
    Assignee: Tervita, LLC
    Inventor: Raymond Ford Johnson
  • Patent number: 8409429
    Abstract: In order to provide a filter device for filtering a fluid medium containing solids, comprising a backflushing filter and a flushing line, by means of which fluid backflushed during a backflushing phase from the backflushing filter can be supplied to a further treatment mechanism, in which the discharging of dirt from the backflushing filter is simplified, it is proposed that the backflushing filter should have a coarse dirt outlet which is connected to the flushing line so that coarse dirt which has arrived through the coarse dirt outlet into the flushing line can be supplied to the further treatment mechanism together with the backflushed fluid during the backflushing phase.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: April 2, 2013
    Assignee: Durr Ecoclean GmbH
    Inventor: Egon Käske
  • Publication number: 20130079508
    Abstract: The invention relates to a filter having a layer which is permeable to a medium to be filtered, comprising at least one nonwoven part, wherein the nonwoven part withstands higher mechanical loads. According to the invention the layer comprises, in addition to the nonwoven part, at least one sheet-like support part connected to at least one sub-region of at least one side of the nonwoven part.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 28, 2013
    Inventors: Enrico Mahlig, Dirk Stocker, Bernd Lubitz
  • Publication number: 20130068685
    Abstract: The present inventions relate to water and wastewater treatment devices including stationary cloth filter media support structures which support structures also form the effluent plenum for the filtered influent.
    Type: Application
    Filed: November 9, 2012
    Publication date: March 21, 2013
    Applicant: AQUA-AEROBIC SYSTEMS, INC.
    Inventor: Aqua-Aerobic Systems, Inc.
  • Patent number: 8398854
    Abstract: The present invention relates to a filter system (1) for removing impurities from a fluid, having a filter housing (2) enclosing a housing interior (3), and having at least one cylindrical filter body (9) provided in the filter housing (2), said filter body separating an uncleaned space (10) from a clean space (11) in the housing interior (3). In order to be able to more simply adapt the filter system (1) to different filtration levels, each filter body (9) has at least two cylindrical filter elements (12) that are designed as identical components and that are axially attached to one another.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: March 19, 2013
    Assignee: Mahle International GmbH
    Inventors: Udo Kübler, Dietrich Stötzer
  • Publication number: 20130048553
    Abstract: Provided are a suction apparatus for a fabric filter and a filtering device for liquid filtration using the same. A main suction slit and a sub-suction slit are provided in parallel by a partition. Thereby, pile threads undergo delayed straightening and fluctuation while going through the sub-suction slit and then are rapidly straightened in the main suction slit. Thus, a back-washing effect can be further improved.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 28, 2013
    Inventors: Younglong KUK, Jaeku KIM
  • Patent number: 8377291
    Abstract: A water recycling system that can be used for reclaiming and recycling water, waste water, or grey water, for providing landscape irrigation, or for recycling uses such as for sanitary facilities, as well as for pre-heating clean water to save energy. A water recycling system may include a sealable tank, an influx pipe, a self-clearing filter disposed within the tank, a pump, and an effluent pipe.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: February 19, 2013
    Assignee: Eckman Environmental Corporation
    Inventor: Noadiah S. Eckman
  • 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
    Applicant: ODIS IRRIGATION EQUIPMENT LTD.
    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
  • Patent number: 8348063
    Abstract: The invention relates to a backflush device (6) for a filter system (1) for removing impurities from a fluid, the backflush device (6) serving to backflush a filter body (3) in the filter system separating the clean side (5) from the inlet side (4), and comprising at least one backflush nozzle (7) for applying a rinse medium to the filter body (3), said nozzle comprising at least one opening (8) through which the rinse medium flows in a flow direction (9) during backflushing and exits the backflush nozzle (7). In order to improve the effectiveness of the backflushing, the at least one opening is designed as a slit opening (8) extending transverse to the flow direction (9) in a straight line having a constant cross-sectional profile (16) comprising a nozzle segment (17) expanding the flow direction (9).
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: January 8, 2013
    Assignee: Mahle International GmbH
    Inventors: Markus Pracher, Albert Schick, Dietrich Stötzer
  • Publication number: 20120285886
    Abstract: Periodically operating a forward osmosis (FO) semi-permeable membrane element in reverse osmosis (RO), to yield product extraction on a feed side of the membrane, to flush out a concentration polarization (salt concentration of the feed side and dilution of draw solution on the draw side) across the membrane. Utilizing treated waste water to generate the flushing solution of low osmotic pressure, and gauge pressurizing the flushing solution to the gauge pressure of the draw solution to keep a constant gauge pressure of the solutions. FO process is interrupted every 5-20 minutes for a 10-60 seconds long flushing RO process, thereby increasing the FO throughput five fold and recovering power from the increased throughput, i.e. from the osmotic pressure of the brine.
    Type: Application
    Filed: November 25, 2010
    Publication date: November 15, 2012
    Applicant: I.D.E. TECHNOLOGIES LTD.
    Inventor: Boris Liberman
  • Patent number: 8309711
    Abstract: The method of forming a filter cake from a slurry comprising the steps of feeding the slurry into a filter housing, wherein the filter housing includes a plurality of vertical filter elements; pressing the slurry into the filter housing against the filter elements resulting in i) a filtrate passing through the filter elements and exiting out an exhaust port of the filter housing; ii) forming a solid cake on the filter elements; feeding a wash liquid into the filter housing while draining out the slurry by opening the slurry drain valve; closing the slurry drain valve and then continually feeding wash liquid through the cake and into the filter tube of the filter housing; stopping the feed of wash liquid; introducing a gas into the filter housing and draining out the wash liquid by opening a bottom drain valve; stopping the gas flow and opening a drain to exit most of the gas and remaining wash liquid; opening the bottom cake discharge valve; and back pulsing by a gas to break and to release the filter cake fr
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: November 13, 2012
    Assignee: Corn Products Development Inc.
    Inventor: Nathan Wiley
  • Patent number: 8297447
    Abstract: A dual-side cleaning traversing screen filtration system which generally comprises a main trough water containment housing, a traversing manifold having a multitude of top and bottom disposed spray heads, flexible plumbing, a substantially planar, rectangular supported screen which is disposed over, and spans the opening of, the main trough water containment housing which, in the preferred embodiment, has a rectangular box like shape, with the combined assemblage functioning as a filter to separate unwanted debris from the water that passes through the screen into the slightly inclined main trough water containment housing where it can be continually removed and re-used.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 30, 2012
    Assignee: Fruit Growers Supply Company
    Inventors: David Sorenson, Bruce Adams
  • Patent number: 8287726
    Abstract: A system for removing sediment from water is disclosed. The exemplary embodiments described herein disclose a system comprising a filter chamber, having a deck positioned inside to divide it into an upper chamber and a lower chamber. The deck may have a plurality of holes to hold filtration elements and also may have a ridge or a skirt or both. An inlet line may be tangentially connected to the filter chamber and introduce influent liquid into the filter chamber below the deck and outside of the skirt.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 16, 2012
    Assignee: Monteco Ltd
    Inventors: Gregory Williams, Roland Dubois, Scott Perry, Joel Garbon, Bob Gallucci
  • 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
  • Patent number: 8221618
    Abstract: An apparatus, system, and method for removing sediment from water is disclosed. According to one embodiment of the present invention, the apparatus includes a tubular filter assembly comprising a support member; and a filtratable element surrounding the support member, the filtratable element comprising a backing mesh; and a fibrous batting. A system for removing sediment from water is disclosed. According to one embodiment, the system includes a filter chamber to receive a liquid having suspended particles therein; at least one filtration cartridge housed within the filter chamber, wherein the filtration cartridge comprises at least one elongated filtratable element, each filtratable element comprising a support member, and a filtratable media adapted to surround the inner core. A method for removing sediment from water is disclosed.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: July 17, 2012
    Assignee: Monteco Ltd.
    Inventors: Christopher Adam Murray, Darren Francis Kevin Lawless
  • Patent number: 8216469
    Abstract: A filter device includes 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: Grant
    Filed: November 10, 2008
    Date of Patent: July 10, 2012
    Assignee: Hydac Process Technology GmbH
    Inventors: Ralf Wnuk, Jörg Hermann Gerstner, Bernhard Schlichter
  • 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
  • Patent number: 8202422
    Abstract: A fluid system for a pump circuit (10), in particular a hydraulic high-pressure pump circuit, has a function block (12). In the housing of the function block, fluid-conducting paths extend and are connected to valve components (32, 46) at least partially. A filter device is an at least partially integrated constituent part of the function block of the fluid system. The filter device (46) with its filter housing (56) can be connected to the function block (12) such that at least one filter element (70) is received in the installation space (72) of the function block.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: June 19, 2012
    Assignee: Hydac Process Technology GmbH
    Inventors: Ralf Wnuk, Markus Olschok, Jürgen Sauer
  • Patent number: 8201695
    Abstract: A lift type pore-controllable fiber filter includes a filter tank, a strainer coaxially formed as a porous tub in the filter tank, extending to an outside of the filter tank at a bottom thereof to communicate with a treated water drain pipe, and having a piston guide recessed in an axial direction at an upper portion thereof, a lifting driver including a cylinder and a piston, an upper filter material fixing plate having fixing means, fixed to the piston above the strainer, and working in collaboration with reciprocation of the piston, a lower filter material fixing plate having fixing means and fixed below the strainer, and at least one fiber filter material fixed to the fixing means of the upper and lower filter material fixing plates at upper and lower ends thereof respectively, and forming filtering pore layers on an outer circumference of the strainer.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: June 19, 2012
    Assignee: SSENG Co., Ltd.
    Inventors: Young Bae Kang, Gyu Tae Kim
  • Publication number: 20120141975
    Abstract: The present invention relates to a separation system and a separation material for easily and rapidly separating a red blood cell-rich fraction, a white blood cell-rich fraction, and/or a platelet-rich fraction from a biological fluid containing these blood cell components without the necessity of performing centrifugation. The separation of a red blood cell-rich fraction, a white blood cell-rich fraction, and/or a platelet-rich fraction from a biological fluid can be accomplished by capturing white blood cells and platelets on a blood cell separation material by contacting the biological fluid with the blood cell separation material, thereby providing a red blood cell-rich fraction; and recovering a white blood cell-rich fraction by separating white blood cells captured from the resulting blood cell separation material using a separation solution.
    Type: Application
    Filed: June 28, 2010
    Publication date: June 7, 2012
    Applicant: KANEKA CORPORATION
    Inventors: Nobuhiko Sato, Shinya Yoshida, Akira Kobayashi, Masaru Nakatani
  • Publication number: 20120125834
    Abstract: A filter device having a multiplicity of filter elements (2) which can be held in a filter housing (4) having a filter inlet (6) for a fluid (8) to be filtered and having a filter outlet (10) for the filtered fluid (12), wherein the filter elements (2) can be traversed by flow in both directions for filtration or back-flushing, is characterized in that, between at least a part of the filter elements (2) and the filter outlet (10), in each case one further filter element, in particular in the form of a fine filter element (14), is arranged in regions of the flow path of the fluid which is pre-filtered by the respective filter element (2) assigned to the further filter element (14).
    Type: Application
    Filed: June 12, 2010
    Publication date: May 24, 2012
    Inventors: Christian Gessner, Bernhard Schlichter
  • Patent number: 8177073
    Abstract: A quickly cleanable water processor includes a shell, a water pipe, at least one filtering unit and a cleaning unit. The shell includes a space defined therein, a water inlet, a water outlet and an air inlet. The water inlet and outlet and the air inlet and outlet are in communication with the space. The water pipe is disposed in the shell and made with slots in communication with the water inlet. The filtering unit is detachably provided around the water pipe. The filtering unit includes alternately arranged membrane bags and water-guiding discs. The cleaning unit includes an air pump and an air pipe extended into the shell from the air pump through the air inlet. The air pipe includes apertures through which air reaches the membrane bags from the air pipe.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: May 15, 2012
    Assignee: New Century Membrane Technology Co., Ltd.
    Inventor: Chi-Chang Kuo
  • Publication number: 20120103894
    Abstract: A reflux backwashing mechanism for automatic fluid filtration, includes a hollow shaft sleeve (12) is located inside of the fluid inversion chamber (2); a blade (11) and a baffle plate (10) are connected with the hollow shaft sleeve (12) which is provided with an opening (9) at a position of the lower part of the baffle plate (10); a hollow core shaft (13) with an upward opening is located inside of the hollow shaft sleeve (12); and the shaft wall of the hollow core shaft (13) is distributed with through holes (14); and the hollow core shaft (13) is installed on an upper baffle plate (4).
    Type: Application
    Filed: August 23, 2010
    Publication date: May 3, 2012
    Inventors: Ye Zheng, Peng Zheng
  • Publication number: 20120074059
    Abstract: There is provided a cleaning method for a hydrophobic filtration membrane used for membrane filtration of water to be treated such as seawater, discharged water and ballast water including a jelly-like suspended substance and clogged with the suspended substance in the water to be treated, the filtration membrane being brought into contact with limonene-containing water, or backwashing of the filtration membrane with a cleaning liquid being done, and then, a flow having air taken therein being applied onto a surface of the filtration membrane or a water stream from an eductor nozzle being sprayed onto the filtration membrane. There is also provided a membrane filtration apparatus capable of efficiently performing the above-mentioned cleaning method.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shuji HAHAKURA, Hideki Kashihara, Satoshi Yahagi, Ryusuke Nakai
  • Publication number: 20120061333
    Abstract: A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.
    Type: Application
    Filed: November 17, 2011
    Publication date: March 15, 2012
    Applicant: SIEMENS INDUSTRY, INC.
    Inventors: Fufang Zha, Gerin James, Joseph Edward Zuback, Peter Zauner, Roger William Phelps
  • Publication number: 20120055887
    Abstract: A filter assembly and method of filtering a fluid containing particulates is provided having a filter element mounted on a horizontal mandrel, whereby the filter element and mandrel are rotatable within a housing during a self-cleaning step, wherein the filter element is immersed and agitated in a cleaning liquid followed by high speed rotation while a rinsing liquid is delivered to the core of the filter element. An ultrasonic transducer in the housing may be activated while the filter element is immersed in the cleaning liquid to assist in removing accumulated particulates from the filter element.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 8, 2012
    Inventor: Johnny Leon LOVE
  • Publication number: 20120048814
    Abstract: The invention relates to a method for cleaning filter structures of filtration installations for filtering liquid products containing a gas or gas mixture that is neutral to the product, in particular for filtering drinks containing the gas or gas mixture that is neutral to the product.
    Type: Application
    Filed: July 7, 2010
    Publication date: March 1, 2012
    Applicant: KHS GmbH
    Inventor: Ulrich Sander
  • Patent number: 8123047
    Abstract: The invention relates to a filter for fluids in conduits, consisting of: a tubular filter housing (1); a filtering basket (9) that is coaxial with the filter housing (1) and that is positioned to rotate; a stationary flushing connection (16) for removing substances that have been retained by the filtering basket (9), said connection covering successive parts of the filtering basket (9) and being connected to means for removing the substances. To achieve a simple construction for the filter, increased operational safety for the drive components and the rotational mounting of the filtering basket (9), in conjunction with reduced production and maintenance costs, a fluid-proof drum motor (3) is coaxial with the filter housing (1) and the filtering basket (9) is fixed to the drum (4) of said motor.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: February 28, 2012
    Assignee: Taprogge GmbH
    Inventors: Guido Keller, Dirk Trostmann
  • 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
  • Patent number: 8070963
    Abstract: A method for purifying fluids and a sedimentation tank, the sedimentation tank includes: a perforated plate spaced from an upper and of the sedimentation tank dividing the sedimentation tank into an upper chamber and a lower chamber; an inlet adapted to inlet fluid into the tank; a first outlet, positioned above the perforated plate for outletting a clarified fraction of the fluid; a second outlet positioned at a bottom of the tank, for outletting a concentrated sludge fraction of the fluid; a pump; and a washing mechanism, positioned at least partially above the perforated plate; wherein the pump is adapted to provide a washing fluid to the washing mechanism when a level of fluid in the sedimentation tank is below a predefined level; and wherein the washing mechanism washes an upper surface of the perforated plate by the washing fluid.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: December 6, 2011
    Assignee: Odis Irrigation Equipment Ltd.
    Inventor: Vladimir Bomze
  • Publication number: 20110253605
    Abstract: Systems and methods for filtering algae from fluid including a piston and pressurized air system to scrape and clean algae from the filter.
    Type: Application
    Filed: May 31, 2011
    Publication date: October 20, 2011
    Applicant: Arizona Board of Regents for and on Behalf of Arizona State University
    Inventors: Qiang HU, Milton SOMMERFELD, Xuezhi ZHANG, Aniket KALE
  • Publication number: 20110253617
    Abstract: A cylindrical back washing purification apparatus comprises a main body (1), a cylindrical through hole (2) transversely provided in the main body (1), a plunger (4) slidably connected in the axial direction arranged in the through hole (2), a feed channel (6) and a discharge channel (8) connected with the through hole (2) on the main body (1). The outer peripheral portion of the foreside of the plunger (4) is concaved inward to form an annular cavity (10) with the inner wall of the through hole (2), the annular cavity (10) is connected with the feed channel (6), a “L”-type hole (12) which is connected with the discharge channel (8) is provided on the plunger (4) from fore to back in the axial direction, filtering holes (14) for connecting the annular cavity (10) with the “L”-type hole (12) are opened on the concaved peripheral face of the plunger (4) in the radial direction, a detachable filter screen (15) is coupled with the concaved peripheral face of the plunger (4).
    Type: Application
    Filed: August 25, 2009
    Publication date: October 20, 2011
    Inventors: Xun Wang, Zhenbao Wang, Zan Wang, Cao Wang
  • Patent number: 8028841
    Abstract: Apparatus and methods include an improved filter and cleaning processes for same. A rotating cleaning element is actuated by vacuum pressure, and relatively precise controls ensure that all portions of the filter's surface are vacuumed cleaned during cleaning cycles. Longitudinal pressure on the rotating cleaning element is balanced to reduce wear and improve performance.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: October 4, 2011
    Inventor: Donald O. Olson
  • Patent number: 8025795
    Abstract: A ballast water treatment system for treating ballast water for a vessel has a pathway for navigable raw water to the tank and a discharge for discharging water back to the body of navigable raw water. A back washable filter in the pathway receives the raw water and screens sediment from the raw water to produce initially processed water which contains at least some marine organisms. A UV or other biocidal device is connected between the filter and the ballast tank, for disabling or killing the marine organisms in the initially processed water to produce treated ballast water for the main outlet to the ballast tank.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: September 27, 2011
    Assignee: Maritime Solutions, Inc.
    Inventors: Jeffrey G. Miner, Richard E. Fredricks, Christopher P. Constantine, Gerard J. Lynch
  • Patent number: 8017010
    Abstract: A device for filtering a liquid synthetic material. The device has a housing, a feed channel, a discharge channel, and backflow channels. The feed duct is subdivided into split-feed channels (2A, 2B). The cross-section of the orifice of the split-feed channels, where they open into the filter chambers, is smaller than the normal cross-section of the feed channels.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: September 13, 2011
    Assignee: Kreyenborg Verwaltungen und Beteiligungen GmbH & Co., KG
    Inventor: Stefan Woestmann
  • Patent number: 8002983
    Abstract: A strainer device for a fluid flow circuit removes debris and solid particles from the fluid flow to prevent plugging and reduce fouling of the system. The assembly includes a chamber that can be hydrocyclonic, a collection area, a screen assembly and a distributor that allows selective connection to a flushing fluid. The fluid flows through the chamber past the strainer device, with large particles collecting in the collection area under the influence of gravity and smaller solid particles being collected in the screen assembly. Particles can be flushed from the system by selectively activating the distributor to back flush the screen assembly and sweep the collection area free of solid particles without disassembling the system.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: August 23, 2011
    Assignee: ExxonMobil Research & Engineering Company
    Inventors: Amar S. Wanni, Thomas M. Rudy, Claude A. Lafleur, Clifford A. Hay, Tomas R. Melli
  • Patent number: 7972505
    Abstract: Disclosed is a system for treating waste water. The system may be applied to any application for the treatment of waste water which benefits from an equalized flow into the waste water treatment processes, such as industrial batch discharges, storm water settling and screening, and septic receiving at a waste water treatment plant. The system comprises a single primary settling tank for the processes of grit removal, flow equalization, fine screening and primary clarification. The system further comprises the use of a flow measurement device on the discharge side of the primary settling tank to provide a uniform flow to downstream processes. The system further comprises placement of a fine screen on a discharge mechanism which controls the effluent flow from the primary settling tank.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: July 5, 2011
    Assignee: Trans Terra Corporation
    Inventor: Terry Wright