Fluid Cleaning Patents (Class 210/409)
  • Patent number: 10954682
    Abstract: A tool for cleaning a pool, particularly in a radioactive environment. The tool comprises a liquid filtering device, a pump, and a tank. The tank comprises an inlet for liquid from the pool. The tank at least partly houses the filtering device and the pump. The filtering device is arranged between the inlet and the pump so as to fluidically connect said inlet and pump.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 23, 2021
    Inventor: Thierry Blanc
  • Patent number: 10156370
    Abstract: An air conditioning (A/C) cover is provided that includes a mesh material configured as a cone. The cone has a lower base circumference that is designed to cover an exhaust fan opening of an A/C unit. The cover can be formed from metal or plastic mesh. In some embodiments a breathable material on a frame is configured as a cone with a lower base circumference that is designed to cover an exhaust fan opening of an A/C unit. A process of protecting an exhaust fan from debris infiltration includes the provision of a flat sheet of a mesh material to an end-user with instructions how to form a cone from the mesh material and how to use fasteners to retain the shape of the cone; and coupling the cone to a housing around the exhaust fan.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: December 18, 2018
    Inventor: Donald Maynard
  • Patent number: 10000880
    Abstract: Laundry wash water recycle system comprising a repressurization pump in fluid communication with a storage tank containing previously used wash water for pumping the used wash water sequentially through a lint filter, a cyclone, and a multi-media filter disposed in sequential series wherein the self-cleaning lint filter in sequential series combination with the cyclone removes insoluble solids with the multi-media filter providing a final filtration for obtaining an output of pressurized double filtered cyclonically processed water. An advanced oxidation combination is introduced into pressurized double filtered cyclonically processed water and mixing occurs for producing a double filtered cyclonically processed advanced oxidation treated water that is communicated to a clean water storage tank for providing on demand delivery to at least one washer and continuous delivery of a feedback flow to the inlet storage tank for providing constant recirculation of treated water through the system.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 19, 2018
    Assignee: New Wave Industries
    Inventors: Charles A. Borchard, Gregory W. Evans, Christopher M. Borchard, Steven M. Samudio
  • Patent number: 9659701
    Abstract: A common mode filter includes first and second wires wound around a winding core portion by the same number of turns. Each of the first and second wires is wound by a number m1 of turns in a first winding area and wound by a number m2 of turns in a second winding area. A distance D1 between an n1th turn (1?n1?m1?1) of the second wire and an n1+1th turn of the first wire is shorter than a distance D2 between an n1th turn of the first wire and an n1+1th turn of the second wire in the winding area. A distance D3 between an n2th (m1+1?n2?m1+m2?1) turn of the first wire and an n2+1th turn of the second wire is shorter than a distance D4 between an n2th turn of the second wire and an n2+1th turn of the first wire in the winding area.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 23, 2017
    Inventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu, Yuma Komaya
  • Patent number: 9388594
    Abstract: A swimming pool accessory that is placed into and adjacent a sidewall of the pool includes a staircase assembly constructed from opposing sidewalls that support a plurality of steps that define an interior portion in which a filter assembly is mounted that includes a filter cartridge housing for receiving a removable filter cartridge, a pool skimmer having an inlet that is mounted through one of the opposing sidewalls and an outlet coupled to the filter cartridge housing, and a pump assembly having one end coupled to the filter cartridge housing and a second end forming a water discharge outlet and mounted to the other sidewall. The pump assembly includes a submersible water pump for drawing water through a filter cartridge positioned on the housing and pumping filtered water through the water discharge outlet to create a circulation of water about the interior periphery of the pool.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: July 12, 2016
    Assignee: GJE Technology LLC
    Inventor: Giora J. Erlich
  • Publication number: 20150108072
    Abstract: The invention relates to a method for sealing a filter chamber of a filter device, comprising a sequence of steps, including moving the recess plate close to the adjacent recess plate for building the pack, and securing the recess plate to the adjacent recess plate, piping a suspension into the filter chamber on a cake side of a filter cloth, letting a solid content of the suspension settle on the filter cloth as a filter cake, and a liquid fraction of the suspension permeate the filter cloth to a filtrate side thereof, and discharging the filtrate out of the filter chamber. The invention further relates to a recess plate for use in a filter device, the recess plate comprising a recess, and a groove encircling the recess, the groove being adapted to receive a sealing ring for sealing a filter chamber.
    Type: Application
    Filed: April 19, 2012
    Publication date: April 23, 2015
    Applicant: OUTOTEC (FINLAND) OY
    Inventor: Bernd Böhnke
  • Patent number: 8997999
    Abstract: A rotating pressure washing stand for spa or pool filter that includes an open-topped cylindrical housing having a vertical rod centrally disposed therein, a buoyant base disc insertable around said rod, said buoyant base disc configured to releasably support an extant pool or spa filter thereon, wherein water pressurized through a pressure washer is forcibly ejected from a plurality of nozzles disposed in a spiral around the housing into the interior of the housing, said plurality of nozzles including a lowermost nozzle oriented to directionally jet water and rotationally engage a plurality of fin members disposed on a bottom surface of the base disc, whereby a filter is rotated and cleaned inside the housing without a user having to scrub the filter or bend over so to do.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: April 7, 2015
    Inventors: Robert DeRenzis, Sharon DeRenzis
  • Publication number: 20150076085
    Abstract: A screw press has a cylindrical screening section mounted to a frame. The screening section is able to rotate but can be prevented from rotating. A sprayer system is operable to spray water on the screening section. In a cleaning process, the screening section is rotated while water is sprayed against it. Optionally, the power required to rotate the screen may be provided by an auger drive mechanism. The screening section may have openings sized to retain flocculated solids. The screw press may be used to thicken a sludge from a waste water treatment plant.
    Type: Application
    Filed: April 18, 2013
    Publication date: March 19, 2015
    Inventors: Michael David Theodoulou, Juan Carlos Josse
  • Patent number: 8951423
    Abstract: A method for removing a filter cake from a filtering device having a housing that defines a filtration flowpath through which a filtrate flows, the housing having at least one inlet and at least one outlet, the filter cake being deposited on at least one cylindrical filter element disposed within the filtering device, the at least one cylindrical filter element comprises at least one filter material and at least one rebound element, the at least one rebound element having a first flange extending from a head region and a second flange extending from a foot region, the at least one rebound element having a structured surface with at least two recesses mutually parallel in the longitudinal direction of the at least one rebound element, the at least two recesses are formed extending between the first flange and the second flange.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: February 10, 2015
    Assignee: ETS Trade S.A.R.L.
    Inventors: Harald Schmidt, Frank Jonigkeit
  • Patent number: 8932459
    Abstract: A seal is brought into contact with a filter media, a filter pump is operated to start filtration, and a signal from a pressure sensor is received. When a predetermined value is exceeded by the signal from the pressure sensor, the filter pump is stopped, the seal is separated from the filter media, and take-up of one section of the filter by a filter collection roll is started. In finishing filter supply from a filter supply roll, drive of a motor is stopped, and an alarm signal is transmitted. If the supply is not to be finished, one section of the filter is taken up by the filter collection roll, and the next stage of filtration is entered.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: January 13, 2015
    Assignee: Fanuc Corporation
    Inventor: Hirotsugu Kasai
  • Publication number: 20150001166
    Abstract: Provided is a filter system including an exposed filtration media. The filter system further includes a raw liquid inlet flow path into a filtering side of the filtration media, a filtered liquid outlet flow path at a filtered side of the filtration media extending to a filtered liquid collecting port, a liquid pump for propelling liquid through the filtration media, and a rinsing mechanism for removing filtrate from the filtering side of the filtration media.
    Type: Application
    Filed: January 21, 2013
    Publication date: January 1, 2015
    Inventors: Ra'anan Ben-Horin, Shahar Nuriel, Omry Levin, Yuval Shamir, Ud Mussel
  • Publication number: 20150001165
    Abstract: A filter cleaning system and method utilizes stationary conduit frames to discharge a cleaning fluid onto a filter without requiring removal of the filter. An intake valve positions on a housing upper end for receiving the fluid from an external source. A primary conduit extends along a longitudinal axis of the housing to carry the fluid from the housing upper end to a housing lower end, and in proximity to the filter. A plurality of conduit frames join the primary conduit at predetermined intervals along the longitudinal axis of the housing. The fluid flows through the conduit frames. Each conduit frame includes a plurality of apertures oriented to face the filter and discharge fluid onto the filter. Throughout the process, the conduit frames remain stationary. Support rods provide longitudinal stability, while wedges provide lateral stability to the conduit frames. A release valve discharges fluid and debris after cleaning.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 1, 2015
    Inventor: Guillermo Duenas
  • Publication number: 20140305886
    Abstract: An apparatus for filtering dry film solvent includes a hollow vessel having a side wall, an open top end and a second end that includes a main outlet that allows fluid to flow out of a hollow interior of the vessel. A removable cover closes off the open top end of the vessel. The apparatus also includes at least one fluid inlet port formed along the side wall of the vessel and defining an entrance into the hollow interior of the vessel and at least one fluid outlet port formed along the side wall of the vessel and defining an exit from the hollow interior of the vessel. A removable filter member is disposed within the hollow interior and is defined by a frame and filter media that extends across the frame such fluid flowing into the hollow interior through the main inlet must flow through the filter media to reach the main outlet. The filter media is disposed at an angle other than 90 degrees relative to the frame of the filter member.
    Type: Application
    Filed: April 15, 2013
    Publication date: October 16, 2014
    Applicant: Solid State Equipment LLC
    Inventors: John Taddei, Laura Mauer, John Clark, Lev Rapoport
  • Patent number: 8858796
    Abstract: A membrane filtration assembly (10) including having a filtrate carrier (9) for minimizing backwash. The membrane filtration assembly includes a membrane module (5) having one or more permeable hollow membranes (6) supported therein by an upper header (7) and a lower header (8). The filtrate carrier (9) extends between the upper (7) and lower (8) headers to allow filtrate to be collected from either or both ends of membranes (6). A filtrate collection chamber (18) is associated with the upper (7) and lower headers (9) and in fluid communication with lumens of the membranes (6) for collecting filtrate withdrawn through said membrane lumens. A filtration chamber (11) is provided for receiving feed liquid to be applied to the surface of membranes (6) within the module (5). The filtration chamber (11) includes an open end for receiving the feed liquid. The open end is located beyond the height of the module (5) to enable gravity feed.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: October 14, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventors: David John Cox, Warren Thomas Johnson
  • Publication number: 20140299557
    Abstract: A device for venting a processing vessel (2) comprising: a separation unit (20) including a fluid permeable separator (26) for separating a solid from a fluid present in a fluidic solid dispersion, the separation unit (20) having an interface component (22) for attachment to a wall (8) of a processing vessel (2) in a manner so that the interface component generally integrates with the wall forming a substantially contiguous wall surface and a cleaning mechanism (50) that is in fluid communication with the separation unit (20) and that is adapted to extract the fluid that is separated from the fluidic solid dispersion from the processing vessel, and to periodically and/or continuously agitating the solids on the surface of the separation unit so that the fluid can pass through the separator.
    Type: Application
    Filed: August 9, 2012
    Publication date: October 9, 2014
    Inventors: Xindi Yu, James F. Koch, Jim M. Grider
  • Publication number: 20140246389
    Abstract: A filter arrangement with a top element and a bottom element and a filter element therebetween captures oversized particles on the upper surface of the filter element and tangentially rinses these particles using an elution fluid to provide a concentration of particles in a relatively low volume of fluid for further analysis. In an intermediate step, the particles captured by the filter may be rinsed with a rinsing fluid such as water to pass additional undersized particles through the filter, thereby providing a purer sample. To improve efficiency, check valves may be used for passageways with one-way flow. Additionally, a configuration of three-way stopcocks may also be utilized. Finally, a sandwich arrangement is possible, wherein a single bottom element is sandwiched between two opposing top elements.
    Type: Application
    Filed: February 4, 2014
    Publication date: September 4, 2014
    Applicant: POCARED Diagnostics LTD.
    Inventor: Gal Ingber
  • Patent number: 8808540
    Abstract: An aeration/backwash device (16) for use with a porous membrane filtration module (5) including one or more membranes (6) extending longitudinally between vertically spaced upper (7) and lower headers (8) into which the ends of the membranes are potted. The membranes (6) having a permeable wall which, in use, 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 aeration/backwash device (16) adapted to at least partially surround a portion of said membrane module (5) and including a communication chamber (17) having spaced through-openings (18, 19) in fluid communication with the chamber (17) and the membrane module (5).
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: August 19, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Warren Thomas Johnson
  • Patent number: 8777018
    Abstract: The present invention relates to a filtering device, facilitating the filtration of media to be cleaned, and also the cleaning of the filter material or filter elements in a filtering device. Said filtering device comprises at least one filter element arranged in a housing, with at least one filter material and at least one rebound element. The invention further relates to a cleaning device, comprising at least one nozzle, which is arranged perpendicularly and/or angularly in relation to the filter element for removing a filter cake on the filter material, wherein the cleaning medium at least partially penetrates the filter material during cleaning. The rebound element deflects the cleaning medium at least partially for renewed penetration through the filter material, while at least partially removing the filter cake at the same time.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: July 15, 2014
    Assignee: ETS Trade S.a.r.l.
    Inventors: Harald Schmidt, Frank Jonigkeit
  • Patent number: 8758622
    Abstract: A method of cleaning a membrane (6) in a membrane filtration system by flowing gas bubbles past the surfaces of the membrane (6) to scour accumulated solids therefrom. The method includes flowing a liquid past a supply of gas; creating a reduced pressure within the liquid flow to cause a flow of gas from the supply of gas (9) into the liquid flow and form gas bubbles therein and then flowing the liquid containing the gas bubbles past the surfaces of the membrane (6) to scour the surfaces thereof. Apparatus for performing the method is also disclosed.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: June 24, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Joachim Muller
  • Patent number: 8758621
    Abstract: A method of purifying impure water contaminated with a filterable impurity and a dissolved impurity, such as seawater, comprising the steps of: providing impure water to a primary microfiltration or ultrafiltration unit to remove the filterable impurity and produce impure filtered water contaminated with a dissolved impurity; providing the impure filtered water contaminated with a dissolved impurity to a reverse osmosis unit to produce a potable water stream and a residual reverse osmosis stream; and treating the residual reverse osmosis stream prior to reuse. The treatment may be in the form of passing through a secondary filter (such as another microfiltration or ultrafiltration membrane or a cartridge filter, and the subsequently treated reverse osmosis reject may be used to backwash the microfiltration or ultrafiltration unit.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: June 24, 2014
    Assignee: Evoqua Water Technologies LLC
    Inventor: Joseph Edward Zuback
  • Patent number: 8733375
    Abstract: A water conducting household appliance, particularly a dishwasher or a washing machine, having a hydraulic circuit, in which cleaning fluid can be recycled and in which at least one further filter is provided for filtering recycled washing liquor. In an exemplary embodiment, the appliance includes a filter in the hydraulic circuit for filtering recycled washing liquor. The filter may be disposed in a region of the hydraulic circuit in which the recycled washing liquor is rotated.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: May 27, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Egbert Classen, Helmut Jerg, Hans-Peter Nannt, Kai Paintner, Thomas Wachinger
  • Patent number: 8679335
    Abstract: The vacuum system (100) is mounted on a vehicle (102). It includes a dewatered solid matter compartment (142), a liquid matter compartment (144), a main flexible hose (130), and an immersible suction head (120) connected to a distal end of the main flexible hose (130). The suction head (120) includes a static dewatering screen filter (150) and a screen-washing arrangement (170) cooperating with the suction head (120). The screen-washing arrangement (170) is in fluid communication with the liquid matter compartment (144) through a high-pressure liquid circuit. The screen-washing arrangement (170) using the liquid matter from the liquid matter compartment (142) as a washing fluid. A method of separating solids and liquid fractions is also disclosed.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 25, 2014
    Assignee: Saniprotex Inc.
    Inventor: Denis Dufort
  • Publication number: 20140054212
    Abstract: System and method for replacing a resist filter in such a manner as to reduce filter-induced wafer defects are described. In one embodiment, the system comprises a filtration system connected to a dispenser, the filtration system comprising a filter; and a switch connected to the filter for selectively connecting the filtration system to throughput one of a first chemical solution and a second chemical solution.
    Type: Application
    Filed: November 8, 2013
    Publication date: February 27, 2014
    Inventors: Yao-Hwan Kao, Po-Chang Huang
  • Publication number: 20140048471
    Abstract: The invention consists in a disposable module (31) for purifying a fluid, in particular water, adapted to form part of a thud purification system and comprising fluid purification means (25, 28), a housing (35) in which the purification means are housed, and means for removably connecting the purification module (31) to the purification system to establish fluid communication between the purification system and the purification module (31), characterized in that the housing (35) contains from the outset a cleaning agent (36) disposed to come into contact with the fluid caused to circulate inside the housing (35) to clean at least a portion of the purification system, it also consists in the purification system and corresponding fabrication and cleaning methods,
    Type: Application
    Filed: September 11, 2013
    Publication date: February 20, 2014
    Applicant: EMD Millipore Corporation
    Inventors: Yves Gaignet, Ichiro Kano
  • Patent number: 8647516
    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: Grant
    Filed: September 3, 2010
    Date of Patent: February 11, 2014
    Inventor: Johnny Leon Love
  • Publication number: 20130319928
    Abstract: A filter candle for precoat filtration has an end piece for connecting the filter candle to a separating wall of a precoat candle filter, a candle wall which together with a precoated precoat layer forms the active filter layer, and a terminating piece for separating an interior candle space from an unfiltrate space. An immersion tube is arranged in the interior candle space and reaches from outside the end piece, through the separating wall and the end piece, into a lower end portion of the interior candle space. At least one opening is provided in the immersion tube within the lower end portion, and a gap is formed between the immersion tube and the end piece.
    Type: Application
    Filed: May 21, 2013
    Publication date: December 5, 2013
    Inventor: Jürg Zuber
  • Patent number: 8574436
    Abstract: A method and apparatus for filtering a slurry utilizing a displacement filtering principle. The filter apparatus desirably includes an inner filter and an outer filter. Both the inner and outer filters are preferably substantially annular in shape and positioned concentrically with respect to each other. A particulate collection volume is at least partially defined between the inner and outer filter. The method includes directing a flow of slurry into the particulate collection volume under sufficient pressure to force fluid within the particulate collection volume through one of the inner and outer filters and any particulate matter blocking a filtering surface of the inner and outer filters.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: November 5, 2013
    Inventor: Sean R. Duby
  • Patent number: 8518273
    Abstract: The method and arrangement is for cleaning at least one of filter sheets and filter cakes in a pressurized white liquor filter with spray nozzles and driving fluid. The white liquor filter is used in a causticizing process in which green liquor is causticized before the white liquor filter by the addition of lime and in which it forms during the process a lime mud slurry. The white liquor filter 101 is used to separate white liquor from the lime mud. The driving fluid for the spray nozzle is constituted principally by the filtrate that is obtained from the filter.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: August 27, 2013
    Assignee: Metso Paper Sweden AB
    Inventors: Patrik Lownertz, Magnus Ingelman
  • 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
  • Publication number: 20130206677
    Abstract: A self-cleaning fluid-filtering apparatus includes a container, a driving unit, a filtered-water pipe, a filtering unit and a connecting unit. The filtered-water pipe is inserted through the container, and formed with apertures. The filtering unit includes filtering bags co-axially provided on the filtered-water pipe, and each formed with an opening in communication with a respective aperture. The connecting unit includes water-guiding elements and bridging elements. Each water-guiding element is placed between two respective filtering bags, and formed with an annular body, an axial opening defined in the annular body, and radial channels in communication with the axial opening. Each bridging element connects a respective radial channel of a respective water-guiding element to a respective radial channel of another respective water-guiding element.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 15, 2013
    Inventor: Chi-Chang KUO
  • Publication number: 20130200006
    Abstract: The present invention discloses a system and method for self-cleaning filters without having to open the filter housing. Wash nozzles are integrated with the filter housings such that when the filters are clogged, both back-wash and regular washing can be performed with practically no down time. Moreover, without opening the filter housing, the hazardous components of the fluid to be filtered can be contained and dealt with before they escape the filter housing, thereby significantly reduces the environmental impact and harm to the working crew.
    Type: Application
    Filed: February 4, 2013
    Publication date: August 8, 2013
    Inventor: Filtration Technology Corporation
  • Publication number: 20130168332
    Abstract: A filter apparatus for removing contaminants from a fluid and having an internal chamber with an adjustable volume is provided. Filter media priming to dislodge trapped gas is facilitated by the filter apparatus. A method of priming a filter cartridge containing a filter media is also provided.
    Type: Application
    Filed: December 30, 2012
    Publication date: July 4, 2013
    Applicant: DELCATH SYSTEMS, INC.
    Inventor: Delcath Systems, Inc.
  • Patent number: 8444862
    Abstract: A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: May 21, 2013
    Assignee: Veolia Water Solutions & Technologies Support
    Inventor: Ake Ralvert
  • Publication number: 20130082011
    Abstract: The invention relates to a device (10) for separating a heterogeneous mixture of matter into at least one retentate and one filtrate, comprising a housing (12) which is subdivided into a chamber for the heterogeneous mixture (20) of matter having at least one feed (14) and a filtrate chamber (21) having at least one outlet (16), a filter unit (22) which comprises at least one filter element (24), wherein the filter unit (22) is arranged in the chamber for the heterogeneous mixture (20) of matter, and a rinsing system (46, 47, 50, 50?) for cleaning the filter unit (22), wherein the rinsing system (46, 47, 50, 50?) has at least one rinsing port (46, 47) which is constructed so as to introduce a stream, oriented tangentially to the shell surface (54), of a first washing medium into the chamber for the heterogeneous mixture (20) of matter. The invention further relates to a method for cleaning a filter unit.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 4, 2013
    Inventors: Stefan WITTMER, Juergen Linder, Gerhard Welker, Marcus Wagner
  • Publication number: 20130069256
    Abstract: An aeration system has aerators that remain generally full of air when the supply of pressurized air is turned off or vented. Water does not reach the bubble discharging holes of the aerator, which are kept from plugging. The aerator has a body with a hole through a wall of the body to discharge bubbles. The hole is surrounded by a skirt at the wall of the body. The skirt extends to below the elevation of the hole. The aerator body is connected to a source of pressurized gas through an open bottomed chamber. An opening between the aerator body and the inside of the chamber is located below the elevation of the hole. When the supply of gas is off, water enters the chamber and possibly the skirt. However, the water can only rise until it has reached the skirt and the opening, both of which are below the hole, and the entire aerator body is kept dry. Aerator fouling is reduced, and the aerator begins to produce an even flow of bubbles quickly when the supply of gas returns.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Inventor: Stephen Hugh GARRIOCH
  • Publication number: 20130048560
    Abstract: A guide member for directing gas bubble flow along a membrane surface, the guide member having first and second side edges defining a channel for gas bubbles to flow along, the channel having an open bottom end through which the gas bubbles can enter the channel and an open top end through which the bubbles can exit the channel, and a diverting means adjacent the channel bottom end arranged to direct at least some of the incident gas bubbles in a first direction towards the channel bottom end. A membrane module assembly and a membrane filter system including the guide member.
    Type: Application
    Filed: March 23, 2011
    Publication date: February 28, 2013
    Inventor: Garfield R. Lord
  • Publication number: 20130043172
    Abstract: A screen intake apparatus has a concrete platform resting on a water source floor. A screen intake anchors on the platform and forms a half cylinder thereon. A barrier at one end of the platform in divides the flow of water. The screen intake has a half-cylindrical body and half-cylindrical screens. Transition walls in the screen intake divide the body's hollow and the screens' interiors, and at least one flow modifier communicates the interior with the hollow. These flow modifiers also form a half cylinder with the platform. A manifold in the screens receives a supply of air to clear debris. Forming a half-cylinder, the screen intake on the platform can have a much lower profile for the water source than the normal cylindrical screens, which require half of its diameter in clearance above and below.
    Type: Application
    Filed: October 23, 2012
    Publication date: February 21, 2013
    Applicant: Johnson Screens, Inc.
    Inventor: Johnson Screens, Inc.
  • 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: 20130026089
    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: Application
    Filed: September 26, 2012
    Publication date: January 31, 2013
    Inventors: David M. Sorenson, Bruce Adams
  • 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: 8357292
    Abstract: The present invention relates generally to an environmentally sensitive mobile cleaning system, and more specifically relates to a closed loop water recirculation system for high or ultra-high pressure mobile cleaning apparatus. The system includes a water tank sized to contain an established volume of fluid sufficient to circulate through the system, a pump to pressure the fluid to a cleaning head, a vacuum system to return the contaminated fluid to the system, and a filter means to remove the contaminants from the fluid so that clean fluid can be reintroduced to the cleaning head. The method comprises the steps of increasing the pressure of a fixed volume of fluid in a closed-loop system, jetting or blasting the surface with the pressurized fluid, vacuuming the blasted fluid into the system, and removing the contaminants from the fluid.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: January 22, 2013
    Inventor: James P. Crocker
  • Patent number: 8337627
    Abstract: A method of cleaning an screen in a manufacturing process step that employs a chamber including a drain line having a screen configured and disposed in the chamber above the drain line to trap soluble materials includes detecting a build-up of soluble material on the screen, ceasing a work operation in the chamber, and initiating a screen cleaning operation. The screen cleaning operation includes closing a computer operated valve fluidly connected to the drain line to fluidly isolate a portion of the chamber, automatically introducing an amount of solvent into the chamber once the computer operated valve is closed with the amount of solvent filling the chamber and/or the drain line to fully immerse the screen, and opening the operated valve after a predetermined amount of time to empty the chamber and the drain line of solvent once the soluble materials trapped on the screen are dissolved.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: December 25, 2012
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, Richard O. Henry
  • 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: 8313656
    Abstract: A variable wash flow filter assembly includes guide that is operable to guide a wash velocity control cone between a minimal position and a maximum position. The guide defines at least one activation deltaP window downstream of a conical gap between the wash velocity control cone and a frusto-conical wash filter. The fuel flow through the conical gap and the activation deltaP window is operable to position the wash velocity control cone between the minimal position and maximum position to selectively split a fuel flow through an inlet into a burn flow through a thru flow port and a filtered flow thru the frusto-conical wash filter and filtered flow port.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: November 20, 2012
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Kevin Gibbons, Francis P. Marocchini, Tomas R. Leutwiler
  • 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
  • Publication number: 20120279917
    Abstract: Systems for filtration are disclosed. A feed mixture including at least one liquid component and at least one solid component and a flow of gas may be directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Applicant: Pall Corporation
    Inventors: Toru UMEDA, Steven C. CHISOLM
  • 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: 20120273432
    Abstract: A filter device for filtering a suspension comprises at least one filter for continuous creation of a filter cake containing particles from the suspension; at least one dispensing device configured to apply at least one first wash liquid to the filter cake created by the at least one filter; and at least one steaming unit configured to steam the filter cake using steam, wherein the at least one dispensing device is integrated into a first process chamber and the at least one steaming unit is integrated into a second process chamber separated from the first process chamber by at least one partition wall. The at least one first wash liquid and a second wash liquid used for creating the steam may have boiling temperatures differing by at least 5° C.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 1, 2012
    Inventor: Urs Peuker
  • Patent number: 8282838
    Abstract: A method and apparatus is provided for removing fluids, particularly entrained and/or adherent fluids, from drill cuttings created during the well drilling process. An apron assembly collects drill cuttings and deposits such cuttings on a central rotor having multiple distinct chambers. A first chamber is loaded with drill cuttings. The central rotor thereafter cycles to a second position wherein a pressure seal is formed around the loaded first chamber. An air knife or similar device is used to blast compressed gas at the cuttings in the sealed chamber and force the cuttings against a screen. Solid components of the cuttings remain in the sealed chamber, while liquid components pass through the screen and are collected using an auger assembly. Following such separation, the rotor is cycled again, allowing dried cuttings to empty from the first chamber. The process is repeated for each chamber of the rotor.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 9, 2012
    Inventor: Michael David Billeaud
  • 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