Backwash Or Blowback Patents (Class 210/411)
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Patent number: 7841478Abstract: The disclosed self-cleaning filtration system and self-cleaning filter solves various problems by replacing a standard filter cartridge with an adapter screwed in place of the cartridge, a filter of limited size with a motor for rotating an inlet cover plate and an outlet cover plate over a body with a plurality of longitudinal channels inside of a circumferential filtration media where the different parts of the media are used alternately in forward and backward flow.Type: GrantFiled: October 26, 2007Date of Patent: November 30, 2010Inventor: Remy Mangano
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Publication number: 20100276377Abstract: A strainer system comprises a strainer housing having a first end portion and a second end portion, an inlet for raw fluid and an outlet for strained fluid, the outlet for strained fluid being disposed in the first end portion of the housing; a strainer basket having a strainer screen and disposed within the housing, the external surface of the strainer screen being in flow communication with the raw fluid inlet and the internal surface of the strainer screen being in flow communication with the strained fluid outlet; a backwash collector assembly comprising a backwash conduit having an opening disposed adjacent the outer surface of the strainer screen, the backwash conduit and the strainer basket being moveable relative to each other, so as to allow the opening to pass across the external surface of the strainer screen; a backwash outlet disposed in the second end portion of the strainer housing; and drive means for moving one of the backwash conduit and the strainer basket relative to one another, the driveType: ApplicationFiled: May 1, 2008Publication date: November 4, 2010Inventors: Brent Knox-Holmes, Ian Durdin, Andrew David Jackman
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Publication number: 20100276356Abstract: The invention relates to a filter device, comprising a plurality of filter elements (21), which can be received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid, wherein 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), which can be actuated by means of a hydraulic piston (53) and blocks the fluid connection mentioned above so quickly that a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21), said feeding effect increasing the cleaning of pollution on the filter element (21), an improved backwashing cleaning is achieved.Type: ApplicationFiled: November 10, 2008Publication date: November 4, 2010Applicant: HYDAC PROCESS TECHNOLOGY GMBHInventors: Ralf Wnuk, Jörg Hermann Gerstner, Bernhard Schlichter
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Patent number: 7807060Abstract: The invention relates to a method for extracting solids (23; 123) from a suspension (22; 122) containing the solids (23; 123) and suspension liquid (32; 132) in a continuously or virtually continuously operating filter device (10; 110) using a filtering material (26; 126), on the one side of which, the high-pressure side (30; 130), a higher pressure prevails than on its other side, the low-pressure side (42; 142), and which passes successively through a plurality of working zones (I-V; I-IV) of the filter device (10; 110) in a working direction (U), the suspension (22; 122) being supplied to the filtering material (26; 126) on its high-pressure side (30; 130) in a first working zone (I) and being filtered, the suspension liquid (22; 122) flowing through the filtering material (26; 126) on account of the difference in pressure between the high-pressure side (30; 130) and the low-pressure side (42; 142) while at least some of the solids (23; 123) are deposited on the filtering material (26; 126).Type: GrantFiled: July 6, 2005Date of Patent: October 5, 2010Assignee: BHS-Sonthofen GmbHInventor: Hans-Peter Schmid
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Patent number: 7799236Abstract: An apparatus for collecting soluble component-removed powder that collects soluble component-removed and poorly soluble component-containing powder to recycle by removing the soluble component from the powder through filtering using a vacuum pump after mixing soluble component-removed and poorly soluble component-containing powder and a solvent dissolving the soluble component, and a method of the same.Type: GrantFiled: August 29, 2006Date of Patent: September 21, 2010Assignee: LG Chem, Ltd.Inventors: Won Jae Moon, Dae Gon Han, Ick Soon Kwak, Jung Hyun Oh
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Patent number: 7785480Abstract: A filter system has a first filter from which solvent is recovered in a cleaning cycle using a rinse fluid in forward flow, and from which particulates are removed using flush gas in reverse flow. At least part of the solvent and the flush gas are recycled to the system, and in still further preferred aspects, filtration of the solvent continues during the cleaning cycle via a bypass circuit through which the solvent is routed to a second filter.Type: GrantFiled: November 12, 2004Date of Patent: August 31, 2010Assignee: Fluor Technologies CorporationInventors: John Mak, Richard B. Nielsen
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Publication number: 20100176070Abstract: An apparatus and a method of rejuvenating capillary filters (2) using both gas agitation of the liquid about the surface of capillary filters (2) and backflushing the capillary filters (2) is disclosed. The gas agitation loosens residue on the surface of the capillary filters (2) and the backflush further loosens residue in an inside-out direction through the walls of capillary filters (2). The agitation of the liquid aids in dispersion, suspensions and transportation of the releases residue form the capillary filters (2).Type: ApplicationFiled: August 15, 2007Publication date: July 15, 2010Inventor: Hee Juan HAN
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Publication number: 20100176071Abstract: A water treatment apparatus includes a raw water supply tube, mixed raw water stream jet nozzles each communicating at one end thereof with the raw water supply tube and having at the other end thereof a raw water outlet from which mixed stream of raw water and air is jetted out, a filtering tank housing a filter layer disposed below the mixed raw water stream jet nozzles with a predetermined distance between the surface of the filter layer and the raw water outlet of the mixed raw water stream jet nozzles, a filtered water takeout tube provided in the filtering tank for taking out water filtered through the filter layer, a reverse stream cleaning water supply tube provided in the filtering tank for supplying reverse stream cleaning water to the filter layer, filter layer cleaning jet nozzles each communicating at one end thereof with a filter layer cleaning water supply tube and having at the other end thereof a cleaning water outlet from which cleaning water is jetted out, and an overflow outlet provided inType: ApplicationFiled: May 19, 2009Publication date: July 15, 2010Applicant: NAGAOKA INTERNATIONAL CORPORATIONInventors: Hitoshi Mimura, Kiyokazu Mukai
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Patent number: 7754074Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.Type: GrantFiled: July 16, 2008Date of Patent: July 13, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
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Publication number: 20100163480Abstract: 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: ApplicationFiled: July 22, 2008Publication date: July 1, 2010Inventors: Markus Pracher, Albert Schick, Dietrich Stötzer
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Patent number: 7713411Abstract: A filter-dryer apparatus employing a single container for both filtering and drying operations including a container holding a material to be filtered and dried, adapted to connect to a filter system and to connect to a fluid bed dryer system, and a process for separating particulates from liquids by the operations of filtration and drying, which includes the steps of providing a single container for both filtering and drying operations; introducing a mixture of particles and liquid to said container; connecting the container to a filter system and filtering the particulates from the liquid; detaching the container from the filter system; connecting the container to a fluid bed drying system and removing the liquid from the particulates to result in dry particulates.Type: GrantFiled: September 13, 2007Date of Patent: May 11, 2010Assignee: Applied Chemical Technology, Inc.Inventors: John Patrick Banister, Robert R. Garner, Jr.
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Publication number: 20100108620Abstract: 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: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Applicant: Fruit Growers Supply CompanyInventors: David Sorenson, Bruce Adams
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Publication number: 20100102010Abstract: A vortex generator for use in a fluid filter operable in both a normal filtering mode and a back flushing mode. The vortex generator including a flapper valve that moves between an open position and a closed position in correspondence to the direction of fluid flow through the fluid filter. In the open position, fluid is permitted to flow through openings formed in a base of the vortex generator. In the closed position, fluid is prevented from flowing through the openings.Type: ApplicationFiled: October 28, 2008Publication date: April 29, 2010Inventor: Alvin E. Nuckols, JR.
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Patent number: 7704382Abstract: The present invention provides a gravity fiber filter, comprising: a filter tank placed in a portion of a large amount of running water; at least one unit filter disposed in the filter tank; a filtered water collecting tank disposed in a lower portion of the filter tank; a discharging pipe extended from the filtered water collecting tank to the height lower than a influent inlet of the filter tank, so that the height of the extended discharging pipe is defined as a height of starting filtration; a sensor; a air inflow pipe through which a backwash air flows in from outside to a lower portion of the filter tank; a control means controlling the operation of filtering and backwashing; and backwash water discharging pipe.Type: GrantFiled: May 13, 2005Date of Patent: April 27, 2010Assignee: Sungshin Engineering Co., Ltd.Inventors: Young Bae Kang, Gyu Tae Kim, Tae Gyu Park
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Patent number: 7662278Abstract: A self-cleaning assembly comprising an enclosed casing 1 with a movable piston 31 and filters 32,33 therein. The preferred assembly has a casing 1 with a dirty water inlet 5, a first outlet 6 for clean filtered water and a second outlet 7 for the removal of sludge from the casing. The filter assembly is constructed and arranged to provide, in its normal operating mode, a liquid flow path through the filter 32,33 in a first direction between the dirty water inlet 5 and the clean water outlet 6 and, in a cleaning mode, to provide a liquid flow path in a second direction between the dirty water inlet 5 and the sludge outlet 7. In the cleaning mode, the movable member 31 compresses the filters 32,33 during the liquid flow in the second direction and contaminant is released therefrom for removal from the filter assembly via the second outlet 7. In an alternative embodiment, the sludge outlet 7 is omitted and sludge is removed from the casing via the outlet 6.Type: GrantFiled: April 10, 2003Date of Patent: February 16, 2010Assignee: Pet Mate Ltd.Inventors: Steve Martin Brooks, Robert Ivan John Wiedemann, David Goodwin
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Publication number: 20090277848Abstract: A water recycling tank 40 for a filtration system 10 including a filter 30 and pump 20, the tank: (a) in communication with the filter and the pump; (b) that has a substantial height difference between the upper internal space and the lower internal space of the tank whereby the tank is adapted to permit water-borne sediments 47 to settle near the base 52 of the tank over time; (c) has a waste outlet 44 near or on the base; (d) has a recycling outlet 43 above the waste outlet and in communication with the pump; and (e) has an inlet 42 above the recycling outlet in communication with the filter.Type: ApplicationFiled: May 6, 2008Publication date: November 12, 2009Inventors: David A. Slade, Anthony P. Marchmont, Roland V. Burgers
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Patent number: 7608138Abstract: Provided is an apparatus 1 for measuring pressure loss in a filter 2, which apparatus includes filter holding means 3; fluid passing means; flow rate measuring means; pressure loss measuring means; and a flow path 6 which connects the four means such that a fluid can pass between the means. The apparatus further includes flow rate regulating means having a mainstream path 7; a tributary path 8 which is branched from the mainstream path 7 and communicates with the outside; and one or more flow path opening/closing members 9 capable of, in conjunction with the level of the fluid flow rate as measured through the flow rate measuring means, opening or closing the mainstream path 7 or the tributary path 8 such that the flow path opening ratio of each of the paths varies continuously or intermittently. The apparatus achieves reliable and convenient measurement of pressure loss with the flow rate of the fluid which passes through the filter 2 being maintained at a constant level by the flow rate regulating means.Type: GrantFiled: November 25, 2004Date of Patent: October 27, 2009Assignee: NGK Insulators, Inc.Inventors: Satoshi Sakashita, Mitsuo Takahashi
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Patent number: 7597784Abstract: Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.Type: GrantFiled: November 13, 2003Date of Patent: October 6, 2009Assignee: DEKA Products Limited PartnershipInventors: David F. Bednarek, Jason A. Demers, Timothy P. Duggan, James L. Jackson, Scott A. Leonard, David W. McGill, Kingston Owens
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Publication number: 20090236298Abstract: A wastewater filter assembly comprising a filter having an influent side and an effluent side, a backwash system adapted to control flow of backwash fluid from the effluent side to the influent side, and an agitation system adapted to control the flow of an agitating fluid (e.g., air) from the influent side to the effluent side. In one embodiment, the agitation system includes an agitating tank that stores the agitating fluid, and a series of valves to control the flow of backwash fluid and agitating fluid. In another embodiment, the assembly further includes a control system that controls the backwash system and the agitation system. Preferably, the control system is programmed to pulse the agitation system during operation of the backwash system.Type: ApplicationFiled: March 18, 2008Publication date: September 24, 2009Applicant: MUNICIPAL FILTRATION COMPANY, LLCInventor: Kurt M. Lindsley
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Publication number: 20090223906Abstract: A liquid filter with multiple vertical filter tubes covered with a permanent filter septum that can be backwashed through an inner backwash tube with radial nozzles that rotate the tube and advances it up by a float in the top clean compartment and descends with liquid pressure.Type: ApplicationFiled: March 6, 2008Publication date: September 10, 2009Inventor: Gene Hirs
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Publication number: 20090218298Abstract: A strainer system comprises a strainer housing having an inlet for raw fluid and an outlet for strained fluid; a generally cylindrical strainer basket having a strainer screen and disposed within the housing, the external surface of the strainer screen being in flow communication with the raw fluid inlet and the internal surface of the strainer screen being in flow communication with the strained fluid outlet; a backwash collector assembly comprising a backwash conduit having an opening disposed adjacent the outer surface of the strainer screen, the backwash conduit and the strainer basket being moveable relative to each other, so as to allow the opening to pass across the external surface of the strainer screen. A method of straining a fluid, in particular a liquid, is also provided. Finally, a valve assembly for use in the selective opening and closing of a plurality of backwash conduits is disclosed.Type: ApplicationFiled: November 3, 2006Publication date: September 3, 2009Inventors: Brent Knox-Holmes, Ian Durdin, Andrew David Jackman
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Patent number: 7581649Abstract: In a liquid filter of the reverse-flow flush-cleaning type, the present invention provides the improvement of mounting the pack of discs (170) intermediate to an assembly including a seat member (200) and screw-thread split-ring (202).Type: GrantFiled: September 19, 2004Date of Patent: September 1, 2009Assignee: Arkal Filtration Systems C.S. Ltd.Inventor: Raanan Ben-Horin
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Patent number: 7563412Abstract: A Reactor (1) for solid phase synthesis comprises a vessel (2), a plurality of filters (3) arranged in the vessel (2) and a plurality of filtrate outlets (4) for evacuating the filtrate out of the filters (3). Each filter (3) is connected to one filtrate outlet (4). The reactor (1) comprises means (3, 4) for delivering a gas into the vessel (2) in a region of the vessel (2) near to the bottom (24) of the vessel (2) and beside the filters (3).Type: GrantFiled: November 17, 2004Date of Patent: July 21, 2009Assignee: Hoffmann-La Roche Inc.Inventors: Martin Blum, Gerald Zieres
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Publication number: 20090166276Abstract: Disclosed is a water treatment system including a raw water tank, a module which includes a filtration membrane, a feed pump, a filtered water tank, a backwash pump which flows filtered water backward from the filtered water tank to the module, a valve and a channel which switch the direction of the water flow between the forward and reverse directions, a controller which suspends the supply of raw water from the raw water tank to the module, switches the valve and channel to the reverse direction, makes the backwash pump to supply filtered water from the filtered water tank to the module thereby backwashing the filtration membrane, and washing drainage treatment line including which treats backwashing drainage generated by backwashing of the filtration membrane, and returns the water to the raw water tank.Type: ApplicationFiled: December 19, 2008Publication date: July 2, 2009Inventors: Norimitsu ABE, Seiichi Murayama, Takeshi Ide, Akira Morikawa, Shojiro Tamaki
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Publication number: 20090159524Abstract: In order to produce a filter cartridge for a reversible flow filter for filtering a fluid which comprises a filter cartridge interior surrounded by a filtering medium, whereby the filtering medium is adapted to be cleaned in a particularly effective and uniform manner during the back flushing phase, it is proposed that the filter cartridge should comprise a reverse flow damming body which is arranged in the interior of the filter cartridge and is movable in a longitudinal direction of the filter cartridge by the reverse flow when back flushing the filter cartridge and produces a local increase in the dynamic pressure of the reverse flow, whereby the reverse flow damming body does not abut against the filtering medium when back flushing the filter cartridge.Type: ApplicationFiled: January 22, 2009Publication date: June 25, 2009Inventor: Egon Kaske
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Publication number: 20090139939Abstract: A method for steam backwashing a filter assembly. The filter assembly has a housing for receiving contaminated liquid and discharging filtered liquid, a filter positioned within the housing for filtering the contaminated liquid, and a drain coupled with the housing. Steam is sent through the housing to remove contaminants from the filter without draining the contaminated liquid or the filtered liquid from the housing. The steam forces the contaminated liquid, the filtered liquid and the contaminants through the drain.Type: ApplicationFiled: December 4, 2007Publication date: June 4, 2009Inventors: Steven P. Franke, William B. Frauenberger, Michael J. Morgan
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Publication number: 20090120866Abstract: The invention relates to an improved self-cleaning filter for agricultural irrigation water having a support base (8) for the rings (3) traversed by perforated tubes (4) which clean them, allowing the axial movement of the tubes (4) having an integral upper cover (5) at the opposite end which presses them in an axial direction, whereas the lower base (6), also integral thereto, generates the axial thrust to separate and press them, acting as a blocker and allowing the flow path to the perforated tubes (4); incorporating a base (9) acting as a membrane and a spring pressing on the rings (3), with an adjustable separation and variable in number.Type: ApplicationFiled: November 18, 2005Publication date: May 14, 2009Inventor: Salvador Ros Roca
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Publication number: 20090107904Abstract: The disclosed self-cleaning filtration system and self-cleaning filter solves various problems by replacing a standard filter cartridge with an adapter screwed in place of the cartridge, a filter of limited size with a motor for rotating an inlet cover plate and an outlet cover plate over a body with a plurality of longitudinal channels inside of a circumferential filtration media where the different parts of the media are used alternately in forward and backward flow.Type: ApplicationFiled: October 26, 2007Publication date: April 30, 2009Inventor: Remy Mangano
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Publication number: 20090101601Abstract: 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: ApplicationFiled: September 5, 2008Publication date: April 23, 2009Applicant: DURR ECOCLEAN GMBHInventor: Egon Kaske
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Publication number: 20090101569Abstract: 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: ApplicationFiled: October 21, 2007Publication date: April 23, 2009Applicant: FUJI ELECTRIC SYSTEMS CO., LTD.Inventors: Koji YOSHIDA, Mikimasa YAMAGUCHI
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Patent number: 7517376Abstract: An air supply system and valve is disclosed which provides a reverse pulse of air for cleaning a filter element located in a filter house. A valve is also disclosed for use in the air supply system. The system includes a pressure vessel adapted to contain a volume of compressed air to be used for supplying the reverse pulse, the pressure vessel having a wall with at least one outlet aperture therein. The valve is mounted to the wall around the aperture to control the flow of air from the pressure vessel, the valve means comprising a valve body having an inlet, an outlet and a flow passage connecting the inlet and outlet, the inlet, the outlet and the flow passage generally extending axially through the valve body, a valve seat surrounding the flow passage, and a valve closure member movable towards and away from the valve seat into closed and open positions to thereby close or open the flow passage, and operating means for moving the valve closure member between the closed and open positions.Type: GrantFiled: December 18, 2002Date of Patent: April 14, 2009Assignee: Goyen Controls Co. Pty. Ltd.Inventor: Andrew John McCausland
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Publication number: 20090050582Abstract: A self-cleaning system for use with a filter having a fluid inlet station, including (a) a manifold mountable at least for reciprocation along an axis with respect to said filter and comprising at least one suction opening adapted to be in proximity to said station and connectable to a suitable suction source for enabling foreign material to be removed from said filter when said system is installed and in operation with respect to said filter; (b) fluid powered motive means for propelling said manifold along said axis; and (c) a reciprocating mechanism for alternately changing the direction of motion of said manifold along said axis.Type: ApplicationFiled: August 23, 2007Publication date: February 26, 2009Inventor: Shmuel GIL
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Publication number: 20090014379Abstract: A filtration faucet system includes a filter housing for mounting underneath a faucet countertop and a filter cartridge. The filter housing has a filter compartment, a water inlet adapted for operatively linking to a water source, a filtered water outlet adapted for operatively linking to a first water opening of a faucet device, and an unfiltered water outlet adapted for operatively linking to a second water opening of the faucet device. The filter cartridge is supported in the filter compartment and is adapted not only for filtering water flowing from the water inlet to the filtered water outlet before the water exits at the first water opening but also for guiding the water directly flowing from the water inlet to the unfiltered water outlet before the water exits at the second water opening.Type: ApplicationFiled: March 27, 2008Publication date: January 15, 2009Inventors: David C. Kwan, Teri Q. Kwan
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Publication number: 20090008343Abstract: 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: ApplicationFiled: July 1, 2008Publication date: January 8, 2009Inventor: Jason D. Gilmour
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Patent number: 7473356Abstract: An object of the invention is to provide a wastewater treatment system using a superconducting magnetic separator that can wash the magnetic filter efficiently. The system comprises in a bore of a superconducting magnet a removably built-up multiunit magnetic filter consisting of a plurality of single-unit magnetic filters. The multiunit magnetic filter has a total longitudinal length at least equal or greater than that of the superconducting magnet. During excitation of the superconducting magnet, a single-unit magnetic filter is removed from the upstream side (sewage side) of the multiunit magnetic filter by pushing in another single-unit magnetic filter from the downstream side (clean water side), and washed and returned to the downstream side again.Type: GrantFiled: August 5, 2004Date of Patent: January 6, 2009Assignees: Niki Glass Co., Ltd, Tatsumi Air Engineering, Ltd, Futaba Shoj, Co., LtdInventors: Takefumi Niki, Yasuhiro Noda, Tatsuo Fukunishi
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Patent number: 7468082Abstract: A self cleaning gas filtration system for filtering contaminants from a flow of gas. A filter element is disposed within a housing and configured to receive a first flow of gas from an inlet in the housing. A pressurized gas source is fluidly coupled to at least one tube having a plurality of perforations. The perforations are configured to backflush the filter with a second flow of gas from the gas source. An outlet is configured to receive at least a portion of the second flow of gas.Type: GrantFiled: April 28, 2004Date of Patent: December 23, 2008Inventor: Robert R. Gordon
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Patent number: 7442295Abstract: The present invention provides a water purification and treatment apparatus using a combination of sedimentation, filtration, and bio-contact aeration processes, which comprises at least one rapid water purification filter having a hopper base for settled sludge and a filtering tank; at least one cylindrical settling basin for sedimentation and filtration; and at least one aeration basin having an under water and an over water bio-film contact parts, for rapidly filtering raw water or wastewater contacted with bio-contact aeration, and performing water purification and treatment.Type: GrantFiled: July 14, 2006Date of Patent: October 28, 2008Inventors: Jian-Rung Cheng, Tong-Fu Hsiao
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Publication number: 20080251466Abstract: A waste water recovery system to filter and recirculate waste water to a wash system including a fluid recovery line, a fluid supply line and a fluid backwash line comprising a filter assembly including a water filtering section to receive waste water from the wash system and to recirculate filtered water to the wash system and a filter backwash section to selectively clean the water filtering section when a system condition exists, and a fluid control including a plurality of valve assemblies operatively coupled between the wash system, the water filtering section and the filter backwash section to selectively control the circulation of water through the water filtering section to recirculate the recovery water to the wash system and to periodicallyType: ApplicationFiled: June 20, 2008Publication date: October 16, 2008Applicant: CONSERV MANUFACTURINGInventor: James C. Keller
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Patent number: 7431165Abstract: A liquid/solids waste separator apparatus for use in separating animal waste or waste water into filtered liquid and collected solid particles. It has an elongated housing having a pair of support legs attached to the rear end of the housing for varying the inclination angle of the housing. Positioned downwardly from the top edge of the housing is an elongated mesh screen that extends substantially the length of the housing. A plurality of nozzles are laterally spaced from each other and connected to the top of a spray tube that extends transversely beneath the mesh screen. A separate slide pad supports each of the opposite ends of the spray tube and they travel along their respective tracks formed on the inner surface of the respective right and left side walls of the housing beneath the mesh screen. An electric motor drives a chain passing around a pair of longitudinally spaced sprocket gears in the housing.Type: GrantFiled: December 19, 2005Date of Patent: October 7, 2008Inventor: Henry Svehaug
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Patent number: 7419592Abstract: The invention relates to a device for filtering a fluid, especially a liquefied plastic, said device comprising a housing, a supply channel, a discharge channel and optionally backwash channels. At least two filter elements are arranged in corresponding filter regions in the flow path of the fluid, in a filter carrier which is mounted in such a way that in can be perpendicularly displaced in relation to the direction of flow, said filter elements being able to communication with the supply channel and the discharge channel. Each filter region comprises two supply partial channels which are worked in to the filter carrier or the housing and are oriented away from the filter regions towards the discharge channel. Said discharge channel comprises housing partial channels which flow together to form the discharge channel.Type: GrantFiled: July 18, 2003Date of Patent: September 2, 2008Assignee: Kreyenborg Verwaltungen und Beteilgungen GmbH & Co. KGInventors: Robert Middler, Stefan Wostmann
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Patent number: 7413649Abstract: A fluid treatment system that includes at least one treatment module (“pod”) with rigid and impermeable inner and outer surfaces, and an annular center passage which is designed to provide an alternative flow path during the pod backwashing process. At least one chemical treatment media disposed in the interior portion of the pod. A riser extends upwardly through the pod so that the outer surface of the riser and the inner surface of the pod define the annular passage. At least one valve assembly controls the movement of a fluid within the annular passage. The pod is serviced by directing the fluid into the riser and then directing the fluid through the pod, a portion of the fluid flowing through the annular passage.Type: GrantFiled: July 29, 2005Date of Patent: August 19, 2008Inventor: Gene Bittner
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Patent number: 7410569Abstract: A filtration system for metalworking fluids has panel filter elements arranged in cells in which the filter frames and panels are approximately parallel to one another. The filter frames are disposed such that the filter surfaces are oriented at an acute angle with respect to the longitudinal axis of the drag-out tank within which they are installed. The filter elements are constructed by affixing a microscreen filter to a wire mesh support structure. The wire mesh structure provides as much support as the perforated plates of the prior art, while featuring significant gains in effective filter area when compared with perforated plate constructions.Type: GrantFiled: November 18, 2005Date of Patent: August 12, 2008Inventors: Turhan A. Tilev, John Wayne Nowicki, Kenneth Frederick Packer
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Patent number: 7396460Abstract: A filter element (8), especially for use in backwash filtering systems, includes a filtering element through which a contaminated fluid flows in at least one direction (24). An intercepting device (62) has at least one rod-shaped permanent magnet or electromagnet (64) that at least partially removes magnetizable, especially ferritic portions from the fluid, before the fluid flows through the filtering element. A detaching device (68) removes the magnetizable portions from the intercepting device (62). The detaching device (68) is configured by a stripper ring (70) that travels along the rod-shaped magnet (64) and removes the portions retained by the intercepting device (62). When the filtering element is backwashed, the stripper ring (70), moved by the fluid flow, detaches the portions retained by the intercepting device (62).Type: GrantFiled: April 14, 2004Date of Patent: July 8, 2008Assignee: Hydac Technology GmbH.Inventors: Ralf Wnuk, Seddik Lahbib, Markus Olschok
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Patent number: 7390419Abstract: A waste water recovery system to filter and recirculate waste water to a wash system including a fluid recovery line, a fluid supply line and a fluid backwash line comprising a filter assembly including a water filtering section to receive waste water from the wash system and to recirculate filtered water to the wash system and a filter backwash section to selectively clean the water filtering section when a system condition exists, and a fluid control including a plurality of valve assemblies operatively coupled between the wash system, the water filtering section and the filter backwash section to selectively control the circulation of water through the water filtering section to recirculate the recovery water to the wash system and to periodically clean the water filtering section.Type: GrantFiled: February 17, 2005Date of Patent: June 24, 2008Assignee: Con-Serv ManufacturingInventor: James C. Keller
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Patent number: 7381323Abstract: A filtration apparatus is provided which is easy to maintain, manage and which enables preservation of filtration characteristics due to the fact that filtration is carried out by use of a gelatinous filter apparatus. In the filtration apparatus, filtration characteristics can be maintained by providing a bubble supplying mechanism for removing a sedimentary layer comprising removables that is formed on a surface of a filtration film and a filtration characteristics restoring mechanism for restoring the filter film clogged by the removables by causing a back-flow of filtered water accumulated in a cistern. Filtration apparatus maintenance and management are facilitated by improving recovery efficiency of the precipitated removables by tapering a lower part inside a raw water tank and providing a recovery tank for recovering removables via a valve.Type: GrantFiled: August 4, 2006Date of Patent: June 3, 2008Assignees: Sanyo Aqua Technology Co., Ltd., Sanyo Electric Co., Ltd.Inventors: Hiroyuki Umezawa, Masahiro Iseki, Motoyuki Tsuihiji
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Patent number: 7371266Abstract: The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device includes a source of high pressure fluid and a mechanism transport the fluid to a nozzle or nozzles; an actuator for moving the nozzles; a controller with logic for instructing the actuator to automatically move the nozzle or nozzles across the surface of the filter; a collection device and suction device downstream of the filter; and ducting to transport the fluid between parts of the system. In one embodiment, a second collection device is used downstream of the suction device to provide additional particulate removal. There are three methods proposed for providing high pressure cleaning fluid to the filter face: 1) rotating the filter and rotating the jet about an axis outside of the filter; 2) moving a nozzle in two perpendicular directions (i.e., x-y); and 3) rotating a radial nozzle about the central axis of the filter.Type: GrantFiled: April 10, 2006Date of Patent: May 13, 2008Inventors: Michael Streichsbier, Richard G. Lemke, Dean Wehrley, Bradley L. Edgar, Marc D. Rumminger
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Publication number: 20080093277Abstract: 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: ApplicationFiled: June 29, 2007Publication date: April 24, 2008Inventor: John Armour
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Publication number: 20080072553Abstract: A method of fabricating a filter cartridge includes providing filtration media formed into a plurality of pleats, wherein the filtration media have a substantially tubular configuration with a pre-determined circumferential spacing between each of the plurality of pleats. The filter cartridge is configured to remove particulates from a particulate-laden fluid stream flowing in a direction through the filter cartridge. The filter cartridge is also configured to be periodically subjected to a cleaning fluid stream flowing in a substantially opposite direction of the particulate-laden fluid stream. The method also includes coupling at least one retention device to the filtration media, wherein the retention device is fabricated from a melt-extrudable polymer material that is configured to facilitate extending a life expectancy of the filter cartridge when operationally exposed to operating temperatures ranging from 135° C. (275° F.) to 204° C. (400° F.).Type: ApplicationFiled: September 25, 2006Publication date: March 27, 2008Inventors: Alan Smithies, Jason Mei
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Patent number: 7332007Abstract: A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is possible through the use of intensively acting multiple stream nozzles 33. The ventilator 11 is allocated to its own ventilator housing 18 that is connected to the dedusting device housing 10 and has a muffler 20 inserted downstream.Type: GrantFiled: June 14, 2004Date of Patent: February 19, 2008Assignee: CFT GmbH Compact Filter TechnicInventor: Reinhold Both
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Publication number: 20080023381Abstract: The present application relates to a filtration system (1) having at least one flexible filter (9) and cleaning apparatus (25) for projecting a flow of fluid onto the at least one flexible filter. The fluid to be filtered passes through the at least cone flexible filter (9) and causes the at least one flexible filter (9) to be deflected in a first direction. The flow of fluid projected onto the at least one flexible filter (9) from the cleaning apparatus (25) causes the at least one flexible filter (9) to be deflected in a second direction. The first and second directions are substantially opposite to each other. The present invention further relates to a filtration system (1) for filtering particulates from a liquid. The filtration system has a sealed vessel (2) suitable for supporting a pressure less than atmospheric pressure. A filter (9) is provided for filtering particulates from the liquid. The application also relates to a method of filtering fluid.Type: ApplicationFiled: November 15, 2004Publication date: January 31, 2008Inventors: Nicholas Jackson, Andrew Clark, Colin French