| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210106000 | Filter cleaning | 39 |
| 20090283462 | FILTER ASSEMBLY FOR FRYING OIL OR OTHER LIQUIDS AND AN ASSOCIATED VALVE ASSEMBLY - A filter assembly is provided. Embodiments of the filter assembly allow for the continuous filtering of the frying oil, while the fryer is on-line. The filter assembly may include a dirty chamber, a clean chamber, a pump configured to suck the frying oil through the chambers, and a toggle clamp configured to move the filter assembly between a closed configuration and an opened configuration. In the opened configuration, the filter assembly is configured to seal a filter media portion between the two chambers. The pump is configured to suck oil into the dirty chamber and through the filter media and into the clean chamber in order to filter dirt from the oil. In the opened configuration, the filter assembly is configured to allow the removal of now dirty filter media portion from between the chambers and the insertion of a new clean filter media portion. | 11-19-2009 |
| 20100051523 | LoweFlow filter wastewater treatment system - The LoweFlow Filter wastewater treatment system is a recirculating filtering system intended to treat typical residential septic tank effluent. Septic effluent is continuously (or near continuously) dosed under pressure to the treatment media through pressure compensating drip irrigation emitters. | 03-04-2010 |
| 20110233117 | MULTI FILTER LUBRICANT PURIFICATION SYSTEM - A lubricant reclamation configuration includes a series of fluid inlets that distribute the fluid to a series of parallel arrangement of individual filter assemblies. A filter control valve assembly is assembled between the distribution manifold and each respective filter assembly individually controlling fluid flow between the distribution manifold and each respective filter assembly. The filter assembly processes the fluid. The processed fluid is collected and retuned to the system via a series of collection channels. The distribution manifold is preferably fabricated of a series of plates. | 09-29-2011 |
| 20110303591 | FILTERING APPARATUS FOR TREATING BALLAST WATER - Disclosed herein is a filtering apparatus for treating ballast water. The apparatus is constructed so that a housing cover plate and an exhaust unit are removably coupled to each other at an upper position of a housing. The exhaust unit includes a base flange on a portion thereof coupled to the housing cover plate and the base flange includes a projecting step that projects to be inserted into a core through hole formed in the housing cover plate. A core serving as a discharge passage of foreign substances includes a shaft coupling unit on a portion thereof coupled to the driving shaft, and is coupled at the shaft coupling unit to the driving shaft via a coupling means. The outer diameters of the coupling means and the shaft coupling unit are formed to be smaller than the outer diameter of the core. | 12-15-2011 |
| 20120305460 | APPARATUS FOR WASTE-WATER FILTRATION - A multi-step press apparatus for sludge dewatering and waste water filtration comprising: a tank, an inflatable membrane, a level sensor, and a nozzle assembly. | 12-06-2012 |
| 20130146514 | MEMBRANE TREATMENT/SEPARATION PLANT AND CONTROL SYSTEM - A membrane treatment plant having at least two stages ( | 06-13-2013 |
| 20130180901 | Strainer for Pump - A pool pump strainer having a rotatable trim assembly within a flooded housing cavity. A suction inlet and filtered suction outlet pair and a backwash inlet and backwash outlet pair are formed in and pass through opposite regions of a housing with at least 30 degrees between each part of a pair. A strainer disposed inside a conduit fixed between a pair of shutter plates makes up the trim assembly which is rotated between strainer and backwater positions by a stem extending through the housing. In the strainer position, water is drawn through the strainer to catch debris and then passes to the pump's suction side. In the backwash position, water is drawn through the flooded housing cavity to the suction side of the pump by a shunt. Thereafter, water discharged from the pump flows under pressure across the strainer to dislodge debris to be deposited into a catch box. | 07-18-2013 |
| 20130264251 | MEMBRANE MODULE PROTECTION - In accordance with aspects and embodiments, a filtration system is provided comprising a membrane module comprising an upper header and a lower header, a plurality of hollow fiber membranes having an upper end potted in the upper header and a lower end potted in the lower head, a cage at least partially surrounding the plurality of hollow fiber membranes, and a screen in contact with and surrounding the cage, the filtration system further comprising an aeration cap coupled to the lower header of the membrane module. The screen may protect the hollow fiber membranes from damage from coarse contaminants contained in the feed liquid, may improve module integrity, and may improve the efficiency of the filtration system. | 10-10-2013 |
| 210107000 | Rotary movement of filter or mechanical cleaner | 4 |
| 20090166273 | FLOW-CONTROL SUPPORTS FOR DISTRIBUTOR PLATES IN COMPOSITE PRESSURE VESSEL ASSEMBLIES - The present invention provides a flow-control support for a distributor plate in a composite pressure vessel. The distributor plate includes a thermoplastic polymeric disk having a top side, a bottom side, a perimeter edge and a central opening and a plurality of fluid flow passages through the disk. The flow-control support is disposed between the bottom side of the disk and an inner side of an end of a thermoplastic liner assembly. The flow-control support includes a spirally fluted upper surface that is adapted to direct fluid flowing from a supply pipe disposed in the central opening of a distributor plate that is supported by the flow control support such that the fluid swirls in a space between the bottom side of the distributor plate and an inner side of an end portion of a water treatment vessel. The swirling water insures that fluid is distributed to substantially all of the fluid flow passages through the disk during backwashing operations. | 07-02-2009 |
| 20100108582 | Wastewater screening device - A screening device for wastewater includes a perforate screening member through which wastewater in an associated channel flows from a bottom side thereof to a top side thereof. An overfall wall is positioned in the wastewater channel. A clearing member is shiftable relative to the screening member for cleaning screenings therefrom, and is positioned upstream of the overfall wall. A waterwheel is positioned in the wastewater channel at a location downstream of the overfall wall, and is operably connected with the clearing member for mechanically shifting the same to remove the screenings from the screening member without using external power. | 05-06-2010 |
| 20110000834 | SYSTEM FOR RECEPTION AND TRANSPORT OF LIME MUD FROM A WHITE LIQUOR FILTER - The system is for the reception and transport of dry lime mud from a continuously operating pressurized filter in a causticization process. A tube valve is used as an outlet from the pressurized process. The tube valve has a minimum length that is twice a diameter of the tube. A column of lime mud can be held within it as a pressure lock. The column of lime mud can be caused to descend through the tube valve by controlling a difference in pressure between an inner surface and an outer surface of the tube such that the diameter of the tube expands essentially uniformly along its length by 5-10% or by at least 4-6 millimeters. | 01-06-2011 |
| 20160129377 | ROTARY DISC FILTER WITH AUTOMATIC INTEGRATED BACKWASH AND CHEMICAL CLEANING SYSTEM - A rotary disc filter is provided with an integrated backwash and chemical cleaning system. In one mode of operation, backwash is directed through a control valve to one or more nozzles for spraying the backwash onto the filter media forming a part of a rotary disc filter. In a second mode, a chemical cleaning mode, the pump directs backwash through an eductor that induces a chemical into the inductor which is mixed with the backwash to form a backwash-chemical mixture that is sprayed onto the filter media. A control system is used in conjunction with the backwash and cleaning systems to monitor process information and/or filter media properties and to determine when to perform backwashes and regenerative cleanings in order to optimize the performance of the filter system. | 05-12-2016 |
| 210108000 | Backwash or blowback | 27 |
| 20080197061 | Device For Filtering A Liquefied Synthetic Material - A device for filtering a liquid synthetic material. The device has a housing, a feed channel, a discharge channel, and backflow channels. The feed duct is subdivided into split-feed channels ( | 08-21-2008 |
| 20080251433 | Hemodialyzer - Provided is a hemodialyzer in which deterioration in membrane performance of a hollow fiber with time can be grasped accurately during dialysis and the performance can be recovered quickly and positively. The hemodialyzer, constituted by connecting an artery side blood circuit ( | 10-16-2008 |
| 20080257801 | Device For Filtering Solid Particles For Liquids Containing Such Particles - A filtering device including (a) at least one surface filter element, each including: (i) first and second faces, the second face disposed substantially opposite to the first face, the faces having a first outer contour; (ii) a first opening through the faces, forming a first inner contour of the faces; (iii) a large plurality of grooves disposed on the faces, the grooves connecting between the outer and inner contour, the grooves adapted to trap solid particles; (b) at least one liquid-permeable filter element, each including: (i) third and fourth faces, the fourth face disposed substantially opposite to the third face, the third and fourth faces having a second outer contour; (ii) a second opening through the third and fourth faces, forming a second inner contour of the third and fourth faces, wherein the outer contour of the liquid-permeable element is larger than the outer contour of the surface element, and the third face of the liquid-permeable element is associated with the second face of the surface element to form an integrated filter element, in which: (i) the openings at least partially overlap, and (ii) the outer contour of the liquid-permeable element completely surrounds the outer contour of the surface element. | 10-23-2008 |
| 20090084717 | MODULAR HEMOFILTRATION APPARATUS WITH REMOVABLE PANELS FOR MULTIPLE AND ALTERNATE BLOOD THERAPY - An apparatus for performing blood therapy having a plurality of pumps for engaging blood and fluid tubing is characterized by a plurality of manually mounted and disengagable panels installed on the sides of the apparatus housing, the panels having pump engaging tubing mounted on the inside of the respective panels. | 04-02-2009 |
| 20090107897 | AUTOMATIC FLUSHING APPARATUS OF MEMBRANE FILTER IN WATER PURIFIER - A water purifier including a sediment filter ( | 04-30-2009 |
| 20090230035 | Advanced in-home water treatment system - A method and apparatus are provided for an advanced water treatment system that includes filtration, physical conditioning, and ultraviolet disinfection elements in a single unit. A control valve controls flow through the system in filtering, backwashing, cleaning, and rinsing modes of operation. | 09-17-2009 |
| 20090294340 | PRESSURE FILTER FOR PROCESSING A LARGE VOLUME OF FLUID WITH AUTOMATIC BACKWASHING BY LINEAR AND ROTATION OF THE BACKWASH TUBE - A pressure filter for processing a large volume of liquid containing multiple internal vertical cartridges that are backwashed through a central backwash tube that travels axially and rotates during backwashing. | 12-03-2009 |
| 20100072117 | Swirling air injected pool filter - An improved filter capable of operating in a backwash mode that creates an upward swirling flow in the hollow interior of the pool filter container. During the backwash cycle, water or air and water are injected into the pool filter container at an angle. In the preferred embodiment, a mixture of water and air are injected into the filter container through exit jets located within the hollow interior of the filter container proximate to the bottom of the filter container. This causes the filter media to swirl upward mixing thoroughly with the backwash water promoting the separation of the mineral deposits from the filter media. | 03-25-2010 |
| 20100170834 | Portable fluid filtration device - Portable apparatus, systems and methods for the selective removal of contaminants from a fluid medium through the use of hollow fiber media (“HFM”). Apparatus embodiments include a housing defining an inlet portion, an outlet portion and a chamber fluidly coupled there between for receiving hollow fiber media, in either bulk or cartridge form, wherein the media is hydrophilic and/or hydrophobic. Passive, i.e., gravity fed or active, i.e., mechanically pressurized versions are disclosed. Apparatus may further include user reversible/replaceable check valves, a receptacle fitting adaptor to allow the use of a variety of receiving containers with a single filtration device, and configurations wherein at least 80% of a maximum flow rate through the filter can be achieved when an inlet fluid pressure is about 0.2 bar. A buoyant pre-filter with an optional hydrophilic filter element may also be used to establish a system. | 07-08-2010 |
| 20100230332 | ADSORPTION APPARATUS FOR WASTEWATER - An adsorption apparatus for wastewater, having a reaction tank configured to allow adsorption of a resource substance contained in wastewater on an adsorbent to be carried out therein, a supplying device configured to supply wastewater containing the resource substance to the reaction tank, a charging device configured to charge the adsorbent into the reaction tank, a water discharging device configured to discharge a treated water, obtained after the wastewater is removed of the resource substance by the adsorption, from the reaction tank, a adsorbent discharging device configured to discharge the adsorbent having the resource substance adsorbed thereon, from the reaction tank, and an adsorbent flow out preventing device configured to prevent flow out of the adsorbent from the reaction tank during the adsorption. | 09-16-2010 |
| 20100258487 | HPLC schematic with integrated sample cleaning system - The disclosed HPLC flow schematic back-flushes the guard column with mobile phase once every operating cycle, the regular cleaning maintaining its effectiveness and useful life. This mobile phase flow reversal is accomplished by imposing a two position multiple port switching valve between the guard and separation columns. In one valve position, the mobile phase is pumped in one flow direction through both the separation and guard columns, but the switched valve maintains the same flow direction only through the separation column and reverses the mobile phase flow direction through the guard column, for effectively cleaning the guard column. Moreover, the mobile phase back flow is directed over the emptied sample drawing needle for cleaning it to reduce possible sample cross contamination. The improved flow circuits use basically only the typical HPLC system components, except for some insignificant modifications from existing injector designs. | 10-14-2010 |
| 20100270218 | Syphon Filtration System - A syphon filtration system is a low head, small foot print, long operating cycle, gravity filtration system for treatment of water and wastewater. | 10-28-2010 |
| 20120228201 | WORKING FLUID FILTRATION DEVICE OF ELECTRIC DISCHARGE MACHINE - An electric discharge unit of an electric discharge machine is disposed in a working tank, and a working fluid in the working tank is delivered to a filter tank by a pump. A filter for working fluid filtration wound off from a roll faces apertures in the bottom of the filter tank. When the internal pressure of the filter tank exceeds a predetermined value, the filter is moved a predetermined distance downward of the filter tank. In a position off the filter tank, that part of the filter which has been used for filtration is cleaned. | 09-13-2012 |
| 20120261317 | FLUSH SYSTEM WITH CONTROLLED VOLUME - An apparatus for use in a septic system such as an aerobic wastewater treatment plant connected to a drip irrigation system for dispensing wastewater from the septic system. The apparatus includes a pump having a pump outlet for a pumping treated wastewater from the septic system, a filter connected to the pump outlet, the filter having a first output for directing filtered water to the drip irrigation system and a second outlet for disposal of backwash water used to clean the filter. There is an accumulator or canister having a predetermined volume for receiving water from at least one of the drip irrigation systems and the second output of the filter. The accumulator has an outlet connected to a pressure actuated normally open flush valve, which closes in response to pressure from water in the accumulator and which moves to the normally open position when the pump is deactivated. | 10-18-2012 |
| 20130068675 | UNIT, ASSEMBLY AND APPARATUS FOR TREATING FLUID - A fluid treatment unit ( | 03-21-2013 |
| 20140091021 | FILTERING APPARATUS - A filtering apparatus with a plurality of filtering elements ( | 04-03-2014 |
| 20140102964 | MACHINE TOOL EQUIPPED WITH CUTTING FLUID FILTERING DEVICE - A filter which is used to remove chips and sludge produced by the processing using a machine tool is backwashed. At this time, a valve provided in an outlet of a filter container is opened based on an elapse time from the start of the supply of compressed air or a cutting fluid to the filter container or a detection value of a pressure inside the filter container. In this way, the supply pressure of the cutting fluid or the compressed air is sufficiently applied to the filter, so that chips adhering to a surface of the filter are sufficiently removed. | 04-17-2014 |
| 20140183110 | FILTER DEVICE - A filter device having a plurality of filter elements ( | 07-03-2014 |
| 20140190877 | ELECTRICITY-FREE WATER PURIFICATION INSTALLATION WITH A MEMBRANE FILTER AND A SYSTEM OF AUTOMATIC BACKWASHING OF THE FILTER - Electricity free operating water purification installation with a membrane filter and a system of automatic backwashing of that filter characterised in that during the operation a fixed percentage is diversed from the outflow of filtered water and is stored in a container under progressive pressure, which to a certain maximum pressure is cut of from a feedback to the membrane filter, so that consequently after filtration of a certain volume of polluted water through the membrane filter the pressure in the container will exceed the maximum resistible pressure by the one way closure, which then will open so that the contents of the container will be forced back through the membrane filter under higher pressure than the original filtration pressure, whereby is provided in automatic closure after the container is emptied. | 07-10-2014 |
| 20140202938 | FILTERING APPARATUS - A filtering apparatus with a plurality of filtering elements ( | 07-24-2014 |
| 20140216995 | APPARATUS FOR TREATING LIQUID CONTAINING IMPURITIES - An apparatus for treating a liquid containing impurities may comprise: a filtering chamber for receiving liquid containing impurities, the filtering chamber containing granular media and configured to permit the granular media to interact with the liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section in communication with the filtering chamber for receiving the filtrate, the filtrate section being in communication with a first outlet for outflow of the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; and a reject section in communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer. The reject section may be in communication with a second outlet for outflow of a portion of the reject mixture. | 08-07-2014 |
| 20140231320 | MULTICAGE-TYPE DEVICE FOR FILTERING BALLAST WATER FOR PREVENTING BACK PRESSURE - A device for filtering for treating ballast water and more particularly, to a multicage-type device for filtering ballast water to prevent back pressure, wherein the multicage-type device for filtering ballast water includes a back pressure prevention tank on a backwash line for backwashing and discharging foreign substances that are inside a filter of the device for filtering, so that backwash water and the foreign substances in the backwash line are preliminarily stored in the back pressure prevention tank thereby preventing increase of back pressure, prevents increase of the back pressure on the backwash line by always maintaining level of water inside the back pressure prevention tank at lower than an inlet port that is connected to the backwash line, and always maintains the level of water at lower than a specific level by artificially discharging the backwash water that is stored inside the tank. | 08-21-2014 |
| 20140238911 | COMPACT AND OPERABILITY-ENHANCING MULTICAGE-TYPE DEVICE FOR FILTERING BALLAST WATER - A device for filtering for treating ballast water by way of a filtering method, and more particularly, to a compact and operability-enhancing multicage-type device for filtering ballast water, which distributes a lower portion of the device for filtering a discharge portion for discharging foreign substances after backwashing a filter and a backwash line, among features that are concentrated at an upper portion of the device for filtering, and communicates discharge tubes of each filtering unit in a single line, by considering the unique installation environment of the device for filtering that is coupled to a ship, thereby simplifying structure, reducing space required for installing the device for filtering in the upper portion of the device for filtering, allowing efficient maintenance by integrating foreign substance discharge and back pressure maintenance of each of the filtering units. | 08-28-2014 |
| 20140299527 | HIGH-EFFICIENCY CANDLE-TYPE DEVICE FOR FILTERING BALLAST WATER HAVING HIGH-DENSITY FILTER STRUCTURE - A device for filtering ballast water which performs filtering by installing a filter element having a conical shape in a concentric circle direction inside the device for filtering ballast water that accommodates a filter portion, and introducing ballast water from a lower end of the device for filtering and passing same through the filter element inside the device for filtering, and for discharging backwash water containing foreign substances that are inside a filter by way of differential pressure, which is created by a driving portion communicating with a filter element by rotating a suction portion that is located on a lower end of the device for filtering. Particularly, the present invention relates to a high-efficiency candle-type device for filtering ballast water having a high-density filter structure, wherein the driving portion is positioned on a lower portion of a housing so that more filter elements can be accommodated inside the housing. | 10-09-2014 |
| 20140326647 | CANDLE-TYPE FILTERING DEVICE FOR PREVENTING BACK PRESSURE - A device for filtering ballast water which performs filtering by installing a filter element having a conical shape in a concentric circle direction inside the device for filtering ballast water that accommodates a filter portion, and introducing ballast water from a lower end of the device for filtering and passing same through the filter element inside the device for filtering, and for discharging backwash water containing foreign substances that are inside a filter by ways of differential pressure, which is created by a driving portion communicating with a filter element by rotating an aspiration portion that is located on the lower end of the device for filtering. In particular, the present invention relates to a candle-type device for filtering ballast water, wherein the driving portion is positioned on a lower portion of the housing so that more filter elements can be accommodated inside the housing. | 11-06-2014 |
| 20150136667 | Biofiltration with Enhanced Sludge Handling - A water treatment system including a media filter having a filter chamber with a volume to accommodate filter media and a sludge outlet and a charge chamber for storing air. The charge chamber is fluidly connected to the filter chamber and has: (i) an air outlet for admitting air into the filter chamber; and (ii) an air inlet. The system also includes a trigger for selectively allowing the passage of air from the charge chamber air outlet into the filter chamber upon reaching a trigger release point and a sludge concentration/storage volume having at least one wall extending upward to form an upper opening. This wall has a height substantially above the trigger release point and substantially isolates the sludge volume from the charge chamber, except for the upper opening. Finally, an inlet to the sludge volume is at a height which allows pressure within the media filter during a filtration stage to move water above the wall height and into the sludge volume. | 05-21-2015 |
| 20160075578 | Biofiltration With Enhanced Sludge Handling - A water treatment system including a media filter having a filter chamber with a volume to accommodate filter media and a sludge outlet and a charge chamber for storing air. The charge chamber is fluidly connected to the filter chamber and has: (i) an air outlet for admitting air into the filter chamber; and (ii) an air inlet. The system also includes a trigger for selectively allowing the passage of air from the charge chamber air outlet into the filter chamber upon reaching a trigger release point and a sludge concentration/storage volume having at least one wall extending upward to form an upper opening. This wall has a height substantially above the trigger release point and substantially isolates the sludge volume from the charge chamber, except for the upper opening. Finally, an inlet to the sludge volume is at a height which allows pressure within the media filter during a filtration stage to move water above the wall height and into the sludge volume. | 03-17-2016 |
