Abstract: The present invention relates to a filtering device for preventing passing and blocking of unwanted particles in a suspension, which filtering device comprises an inlet and an outlet and a defined space between the inlet and the outlet, wherein the device comprises a filter means arranged in the outlet, that the filter means is arranged with openings, that the size of the openings permit particles of a size smaller than the openings to pass through, and at least one nozzle connected to a pressurised liquid source, capable of delivering a liquid jet, and arranged adjacent said outlet, wherein the said at least one nozzle is arranged such and directed such that particles that engage said filter means are removed therefrom by the liquid jet.

Abstract: According to the apparatus, removables 12 trapped by a first filter film 10 are used as a second filter film 13, and clogging of the first filter film 10 is prevented, and an external force such as bubbles is applied to the second filter film 13 to maintain filtering capacity. And when removables are mixed with the filtered water, the filtered water is recirculated again to the tank in which the wastewater is stored, and after it is checked that a desired inclusion rate has been reached filtration is started again.

Abstract: A vortex mechanical power filter includes a filter unit 12 arranged within a vortex tank 10 such that water to be filtered, e.g. flowing from a from a fish pond via gravity supply line 22, impinges upon a side of the filter unit at an angle to cause rotation thereof. The filter unit can also include a polyurethane ring float 121 so that the filter unit is self-adjusting within the vortex tank. Within the filter unit, a vortex disrupter 20 can be provided to aid in rotation thereof. As the system operates, a water jet assembly 18 sprays a plurality of water jets onto the filter screen to gently clean waste therefrom so that filtered water can be continuously provided.

Abstract: A self-cleaning water filter assembly including a body having inlet and outlet portions and a filter housing portion defining a cavity disposed therebetween so that water entering the inlet must flow through an inner surface to an outer surface of a filter then to the outlet. A piston disposed concentrically within the filter is biased in an upward resting position by a spring in the absence of water pressure. A scraper extends radially from a piston sidewall and into contact with the inner surface of the filter. Apertures extend through the sidewall and into a central bore extending through a bottom end of the piston. In the presence of water pressure, the piston is forced downwardly into the cavity, and the scraper and apertures cooperatively dislodge and flush filtered particulate matter from the housing. As water pressure is reduced, the piston is biased into its upward resting position, dislodging and flushing filtered particulate matter again.

Abstract: A method of operating a plant for filling containers by moving a liquid such as water through an apparatus with at least one portion for receiving the liquid before it is filtered and at least one portion for receiving the liquid after it is filtered, so that the liquid moves from at least an upper area of apparatus to lower area of the apparatus to be transferred to bottles or other containers.

Abstract: Steaming filter aid cakes in-place in a pressure leaf filter is a simple, inexpensive, and reliable technique for insuring that all collected pathogens are destroyed and never released back into the environment. Filter aids including diatomaceous earth reduce giardia and cryptosporidium by at least 6 logs. D.E. filtration allows the flexibility to adjust the dosage for bodyfeed and the grade to suit changing water conditions, and the process of bodyfeeding filter aids is the only technology that seals its own leaks. After sterilization, the filter aids can be recycled. With hydrocyclones the contaminants can be separated from the filter aids and up to 90% of the filter aid can be recovered. This makes filter aid treatment a very cost effective treatment for large plants as well as the smaller plants where this technology has been used in the past.

Abstract: A large percentage of solids are removed from a manure slurry when the slurry is run across a sloped screen separator. The sloped screen on the separator has very small openings. In addition, the separator has a water line with spray heads formed across the sloped screen. The spray heads direct water under pressure onto the sloped screen. Further, the separator controls the air flow through the sloped screen.

Abstract: Described is a continuous liquid filtering apparatus having a preliminary filtering chamber 9, a filtering chamber 3, a filtered liquid chamber 12, and an electromechanical cleaning system. In operation, after entering inlet 1, liquid passes through coarse screen 2 into the filtering chamber 3. The liquid then passes through a multi-layer sintered filtering element 4 before exiting the apparatus through the outlet 6. The electromechanical cleaning system includes a hollow connector unit 10 having dirt suctioning members 5 and spraying nozzles 11 for cleaning the sintered filter element. The cleaning system is activated whenever the liquid differential pressure exceeds a predetermined valve indicating that the cylindrical filter requires a cleaning treatment. The spraying nozzles 11 are in fluid communication with the filtered liquid chamber 12 via booster pump 13.

Abstract: Device for washing gluten, provided with at least one drum screen rotatably supported on a corrosion-resistant shaft, and equipped with means for supplying and discharging washing water and also with means for supplying the material to be treated at the one drum end and removing the treated gluten at the other drum end, at least two sets of spoke-type elements which are made of corrosion-resistant material and which support the circumferential wall of the drum screen being provided on the drum shaft at points disposed at a distance from one another in the longitudinal direction, which sets are each mounted, when viewed in the circumferential direction, on a bush which is made up of at least two parts made of corrosion-resistant material and attached to one another by flanges and which is to be firmly clamped to the shaft, the shaft being made of steel which is not corrosion-resistant and which has a high modulus of elasticity, and lining sleeves made of corrosion-resistant material being provided around the s

Abstract: An auxiliary filter for removing residual particles from already filtered cutting fluids used in metal cutting machines, the auxiliary filter including a hollow wheel member rotated in a sealed tank into which the filtered liquid flows. Pressurized liquid passes through a fine screen on the perimeter of the rotating wheel to capture any residual particles. A high pressure backwash jets are directed at the screen as it rotates past an array of nozzles, and a collection trough draws any dislodged material away and out of the tank.

Abstract: A method and apparatus for efficiently separating solids from liquid/solid slurries are disclosed. The slurry to be separated is retainably placed within a container having one or more lift paddles secured within its inner cavity. The container is supported for rotation about an axis and has drive means for slowly rotating the container. As the container rotates, the lift paddles lift a portion of the retained slurry, allowing the liquid portion to fall back into the primary slurry pool to be separated, and lifting coarse solids toward the top of the rotation path of the paddles. The separated solids slide by gravity from the lift paddles as they approach the top of their rotation paths and into a collection tray. A filter that rotates with the container filters fine solids from the liquid portion of the slurry and also deposits the fine solids on the collection tray. The filtered liquids can be readily pumped from or recirculated to the separator.

Abstract: A system wherein an ultrasound emitter, or gun, is provided which emits an ultrasound beam directed at filter media, on the opposite side of the filter media from where solids accumulate, in order to knock the solids from the filter media. Dislodged solids from the area targeted by the beam are driven upstream, away from the filter media. Gravity then draws the solids to a drain of a collection chamber, which allows for the solids to be safely removed from the system. A guide is provided upstream of the filter media, the guide having angled slats or vanes. These vanes are angled upwardly towards the filter media and downwardly towards the drain, such that as the solids are blasted from the filter media by the gun, they are jolted upstream, and impact the angled vanes upon their downstream return.

Abstract: The invention relates to a method and apparatus for cleaning the filter surface (2, 3) of a filter medium in a suction drier. According to the invention, in order to mark the surface to be cleaned, in contact with the surface to be cleaned there is set a sealing surface (4) that forms an essentially closed space for the surface to be cleaned, and that into said closed space, there is conducted cleaning liquid (7) in order to carry out the cleaning.

Abstract: The apparatus for removing bodies (41) from a liquid in which the apparatus includes a first container (1) which is provided with an inlet (13) through which the liquid is supplied to the first container, and a second container (2) which, in the lower region (35) of the apparatus, surrounds the first container. Between the wall (17) of the first container and the wall (27) of the second container, there is formed a space (26). The wall of the first container is provided with passages (15) through which liquid passes from the first container to the space (26). The passages (15) are dimensioned so as to separate bodies (41) transported by the liquid towards the inside of the wall (17) of the first container. A helix (3) is disposed in a path (7) which is formed by the wall of the first container and is oriented at an angle (&agr;) to the horizontal plane.

Abstract: The invention provides a clog-resistant filter for separating solids from liquids, of the type wherein the liquid is passed from a filter inlet through a circular-section hollow filter element the filter being provided with means for the discharge of collected solids during filter operation, the filter comprising a housing provided with an inlet for the liquid to be filtered and provided with a first outlet for filtrate and with a second outlet for liquid containing a high concentration of solids, a hollow filter element insertable into the housing, the internal side of the filter element being in fluid connection with the inlet and the external side of the filter element being in fluid connection with the first outlet, a textured volume reduction device inserted in the filter element and being of a size and shape so as to occupy a major portion of the hollow of the filter element, the volume reduction device having a textured outer surface, the outer surface of the volume reduction device and the internal si

Abstract: A materials treatment system which initially separates liquid and solid components with a separator. The system can be advantageously utilized for household sewage handling, however various components have other applications. Once the separator separates the solids and liquids, a fire tube combusts the solids with microwaves. The liquids exiting the separator are treated in a liquid treatment system which includes additional particle filtration/separation, treatment of the liquids with an oxidant liquid, and an ultraviolet treatment. An advantageous microwave cavity assembly is also provided for dehydration/combustion of solids exiting the separator and/or for solids filtered from liquids in the liquid treatment system.

Abstract: An improved apparatus for removing magnetic material from a flowing fluid such as water by magnetic separation has a single set of electromagnets which are used with a plurality of magnetic filters for continuous magnetic separation operation alternately without obstructing the flow of the fluid being processed. A high-gradient magnetic filter arrangement which passes through a magnetic field generated by the magnets is made up of at least two magnetic filters separated by a watertight partition. When the fluid being processed is flowing through one of the magnetic filters, the other filter is removed from the flow of the fluid into a magnetic filter housing which is separated from the fluid flow through the magnetic filter by means of partitions. Backwashing of this other magnetic filter is carried out while purification of the fluid being processed by the former magnetic filter continues uninterrupted.

Abstract: A uniform area shower for use with a disc filter. The disc filter includes at least one disc and moving showers that periodically remove a precoat layer of solids from the surface of the disc. In one embodiment the uniform area shower comprises a oscillating shower that is pivotly mounted and travels radially over the disc. In an alternative embodiment the uniform area shower comprises a traversing shower that mounts to a carriage and travels radially over the disc. Each shower includes a controller controlling the drive mechanism to vary the speed of transport of the shower across the surface of the disc such that time spent by the shower cleaning the disc at each radial cleaning position is generally proportional to the radial distance of the cleaning position from the center of the disc so that a wash liquid is applied to a uniform area of the interior and exterior of the disc.

Abstract: A method and apparatus for extracting oil from water, particularly spillage water from gasoline stations and water that emanates from vehicle-washing plants. The method and apparatus utilize filters to which contaminated water from the vehicle-washing plant and other contaminated water is passed. The water is cleansed in one or more mutually sequential filters arranged in the flow direction of the water. The water is cleansed by first causing the water to flow through a collection filter in which oil and coarse particles are collected in a first cleansing stage. The water from the collection filter is passed through a fine filter adapted to lower the oil content of the water to a level below about 50 to 70 mg/l in a second cleansing stage. The water from the fine filter then flows through a membrane filter that is adapted to filter-off at least 75% of the oil remaining in the water during a third cleansing stage.

Abstract: A cartridge-filter cleaning spinner comprises a handheld spindle rod that can accommodate a variety of filter sizes. The spindle rod has two inward pointing slip-ring hand-tightened hubs. A cartridge filter is loaded on the spindle rod by removing one of the slip-ring hand-tightened hubs, slipping the cartridge filter onto the spindle snug against the other slip-ring hand-tightened hub, and then reinstalling the first slip-ring hand-tightened hub on the spindle rod. The cartridge filter is then free to spin around while the spindle rod handles themselves remain stationary. A water jet from a garden hose is then directed at one end of the cartridge filter to one side so the cartridge filter begins spinning. The water jet is then worked down slowly to the opposite end while keeping the spinning action going. The process is then repeated, but with the water jet directed to the other side so the cartridge filter spins in the opposite direction.

Abstract: In a continuous-feed filtering- or screening-type centrifuge, first dewatering a particulate material, then reslurrying the particulate material, and subsequently again dewatering the particulate material in a sequence along a cake flow path extending through the continuous-feed filtering- or screening-type centrifuge. The first dewatering, the reslurrying and the subsequent dewatering are performed in respective compartments disposed along the cake flow path. The compartments are defined in part by a plurality of gates, baffles, or weirs extending outwardly from a hub of the centrifuge. Outer ends of the gates are spaced from a bowl wall to define respective cake flow gaps which limit the thickness of a cake layer moving along the cake flow path.

Abstract: A centrifuge includes a conveyor for moving cake along a cake flow path towards a cake discharge opening and further includes a baffle mounted to the conveyor and disposed along the cake flow path. The baffle is provided on an upstream side, facing substantially away from the discharge opening, with a concave profile or surface. This concave profile or surface serves to direct a portion of the cake, which is headed downstream along the cake flow path, into a recirculation or churning path directed partly back towards a pool. The recirculation or churning of the particulate material facilitates an enhanced washing thereof and improves the removal of valuable solutes or undesirable impurities from the cake.

Abstract: A method and an apparatus for cleaning filters contaminated by hot-melting resins and polymers in situ, without removing the filtering elements. The method comprises a preliminary step, during which the circulation of the product to be filtered through the filter to be cleaned is interrupted, and a draining step, during which a pressurized draining fluid is passed through the filter in order to empty the filter of the residual product. A filter cleaning step is then performed during which a cleaning fluid, constituted at least partially by superheated steam, is passed through the filter. The fluids used to clean the filter are then subjected to treatments to eliminate pollutants.

Abstract: Liquid is drained from the cake in the beach section of a centrifuge bowl by providing a dedicated flow path or a series of flow paths from the beach section. The flow path or paths are designed to drain away expressed liquid while maintaining substantially the flow of cake up the beach to the cake discharge opening(s) irrespective of solid throughput. The expressed liquid is guided from the beach section back to the slurry pool in the cylindrical section of the centrifuge bowl. More specifically, one or more liquid guide channels may be provided in the beach area under the surface supporting the cake flow towards the cake discharge end of the centrifuge. The liquid guide channels may be established by providing a porous liner along the beach section of the centrifuge bowl. Preferably, the liner extends down the beach at least to the level of the pool.

Abstract: An improved apparatus for removing magnetic material from a flowing fluid such as water by magnetic separation has a single set of electromagnets which are used with a plurality of magnetic filters for continuous magnetic separation operation alternately without obstructing the flow of the fluid being processed. A high-gradient magnetic filter arrangement which passes through a magnetic field generated by the magnets is made up of at least two magnetic filters separated by a watertight partition. When the fluid being processed is flowing through one of the magnetic filters, the other filter is removed from the flow of the fluid into a magnetic filter housing which is separated from the fluid flow through the magnetic filter by means of partitions. Backwashing of this other magnetic filter is carried out while purification of the fluid being processed by the former magnetic filter continues uninterrupted.

Abstract: A method and apparatus to clean a filter drum used for thickening lime mud. The drum is rotated about a horizontal axis in a first direction so that the circumferential surface of the drum moves into contact with lime mud in a vat and a precoat layer formed on the drum, as well as an external layer of lime mud which forms a thickened lime mud cake when a vacuum is applied to the drum withdrawing liquid from the lime mud. The thickened external layer of lime mud cake is scraped from the drum at a second side of the vat, and at a first opposite side of the vat a first jet of liquid is directed onto the drum surface (e.g. at a pressure of about 30-100 bar) to remove a strip of the precoat layer, a third jet of liquid cleans the drum after removal of the precoat layer, and a second jet of liquid is directed onto the drum with sufficient intensity (e.g. a pressure of about 2-20 bar) to remove, by spreading and partially detaching, a strip from the thickened lime mud cake.

Abstract: A device for filtering fluid includes a hollow housing (10) having a fluid inlet (26) and a fluid outlet (28). A filter element (50) formed of fluid permeable material is disposed within the housing (10) for filtering fluid entering the fluid inlet (26), the fluid passing through the element (50) and out the fluid outlet (28). The element has a generally cylindrical configuration with the permeable material forming a plurality of elongated, radially extending pleats (98). The pleats are supported by spacers (81) having a plurality of blades (102) attached to a web (106) with channels (104) therebetween. The element (50) is used as a septum for supporting a diatomaceous earth precoat. A regeneration piston (76) creates fluid flows within the filter that cause the element (50) to flutter, thereby displacing the diatomaceous earth precoat from the septum for regeneration.

Abstract: The invention pertains to a tube filter device for the filtration of beer.In order to ensure a dependable, simple, time-saving and water-saving purification in a device of this kind, there is an inlet line underneath the tube filter with at least one rotary spray arm having upward directed spray nozzles, wherein the spray nozzles are arranged so that they generate concentric spray circles upon rotation of the spray arm, said circles are located essentially between the tube filters, and that also a drive unit is provided for rotating the spray arms.

Abstract: A coolant reclamation device for use in conjunction with a conveyor of a first width wherein the conveyor receives solid contaminants and coolant from a machine tool operation. The conveyor transports the solid contaminants and coolant to the coolant reclamation device. The coolant reclamation device includes an elongate body which defines a chamber and contains an elongate opening which provides direct access to the chamber. The device also includes an elongate screen located over the opening. The coolant reclamation device is positioned relative to the conveyor so that the solid contaminants and coolant discharged from the conveyor impinge the screen whereby the solid contaminants remain on the surface of the screen and the coolant passes through the screen into the chamber. The elongate body contains a return port through which the chamber is in fluid communication with the coolant reservoir via a conduit.

Abstract: A hemo(dia)filtration apparatus (10) is described comprising a dialyzer (12) and two sterile filters (38) and (60). The first chambers (42) and (64) of both sterile filters (38) and (60) may be switched at least intermittently during flow through, thereby flushing out membranes (40) and (62) of both sterile filters (38) and (60) and effectively preventing an accumulation of germs and pyrogens. This prevents an increase in the transmembrane pressure (TMP), which reduces the likelihood of a rupture, thereby ensuring sterility of the dialyzer fluid and improving the operating safety of the hemodiafiltration apparatus (10).

Abstract: A filtering device for use in a washing machine is disclosed. The filtering device has a filtering web disposed so that a planar direction thereof is equal with a flowing direction of the washing water in the pipe in which washing water circulates, and many ribs disposed on the filtering web to form a lattice. Longitudinal directions of the ribs have a predetermined angle against the flowing direction of the washing water. The washing water flowing in the pipe during a draining operation is guided toward the edge areas of the filtering web, so it is distributed to be in uniform contact with the filtering web. The dirt having been adhered to the filtering web during the washing operation is efficiently removed by the washing water guided by the ribs during the draining operation.

Abstract: Rolling solutions used in cold rolling are pressurized and filtered at working temperature using a filter of the scanning flush type in which flushing nozzles exhausting to a low pressure zone are scanned over an upstream surface of the filtration medium during flushing cycles triggered by a pressure drop across the filter exceeding a predetermined level. Flushing retentate exhausted during the flushing cycles is treated in a secondary filter. Harmful particulates can be removed without retaining wanted components of the rolling solution.

Abstract: A filter press for the filtration of suspensions has a frame, a support plate (1), a pressure plate (2) mounted in the frame and a set of vertically arranged filter plates (4) between the support plate (1) and the pressure plate (2). The filter plate (4) is provided with a single layer filter fabric (8) on the side that removes the liquid and collects the solids. The filter fabric runs over two filter cake removal rollers (6, 7) that are so positioned relative to each other and relative to the fabric (8) that an S-configuration is imposed on the filter fabric (8) as the rollers travel along the fabric. A pressure application device (5) presses the filter plates (4) together. A cleaning pipe (17) with spray nozzles (17A) for cleaning the filter fabric (8) is positioned between the cake removal rollers. The single layer fabric reduces the filtering resistance, thereby increasing the capacity of the filter press.

Abstract: In a rotatable filter, such as a disk filter, for separating solid particles from a liquid mixture, in which a filter material (3) is partially immersed, a cake-removal member (11) is designed to take off a layer of the formed cake of solid particles from the filter material, so that a liquid-permeable coating, which itself acts as a filter medium, is left on the filter material which is moved down into the liquid mixture which is to be separated. According to the invention, for renewing the coating a spraying apparatus (13-17) is designed to spray jets of liquid in at least one spray zone (18), through which only a part of the filter material passes upwards during the rotating movement of the filter material, so that the whole cake of coarse particles, including the coating, is removed from the part of the filter material by the jets of liquid.

Abstract: A soil separator and water distributor for a dishwasher having an annular screen facing into the dish compartment for screening wash water, and a rotating flush arm above the annular screen for flushing soil from an underside of the screen, and a separate wash water arm above the flush arm for spraying the dishes. The wash water arm can thus be flow separated from the flush water arm. Thus, the wash water arm can be operated intermittently while the flush water arm can be operated continuously.

Abstract: A method and apparatus is disclosed for draining used oil from a motor (M) having a drain hole (12). A valved drain plug (P) is removably mounted in the drain hole (12). A transportable lubricant drain container (C) is adapted to be positioned beneath the vehicle (V) to be drained. The drain container (C) has a handle (16) that is adjustable to correctly position the container (C) beneath the drain hole (12) of the motor (M) depending on the type of vehicle (V). The valved drain plug (P) can be remotely operated to open a passageway (22) through which the used oil drains from the motor (M).

Abstract: The invention relates to a method and to a device for carrying out the method for rinsing in a dish washer with a rinse water circuit, in which the rinse water is evacuated from the sump of the wash chamber by means of a circulating pump and, passing through a filter, is supplied to the spray devices in the wash chamber, the filter being cleaned in counterflow to the rinse water by means of introduced cleaning water. During the entire rinsing procedure the filter is cleaned in counterflow, the dirt particles in the filter being kept in suspension. The cleaning water is supplied to the rinse water circuit and preferably removed therefrom.

Abstract: A liquid-cleaning filtering system has at least one permanent filter assembly that is capable of being promptly backwashed thus minimizing the down time of machinery. Each filter assembly utilizes a wire mesh filter cartridge which is backwashed by a powered internal rotating sprayer nozzle assembly that is operable to deliver a plurality of high pressure streams of liquid to a surface of the wire mesh. Each filter assembly is capable of being repeatedly used and then backwashed in order to return it to a pristine state. The rotating spray nozzle assembly may be powered by hydraulics, pneumatics or an electric motor. A plurality of filter assemblies may be arranged together in a fluid processing center in order to process large volumes of industrial waste.

Abstract: A cross-flow filtration apparatus is able to produce cleaner liquid, especially in the filtration of green liquor, then is typically possible. A housing contains a number of vertical filter elements each having a filter surface with first and second sides which are substantially free of filter cake. A higher gas pressure is provided on the first sides of the filter surfaces than the second sides, and filtered liquid passes through the filter surface from the first side to the second side. A first conduit withdraws filtrate from the second side of at least one of the surfaces, and a second conduit withdraws suspension liquid from adjacent the bottom of the filter elements and typically (though not necessarily) recirculates it. Suspension is introduced--such as in a tray with a perforated bottom mounted above the filter elements, and/or the nozzles--so that the suspension flows in a falling film down the first sides and in contact with them, so that filter cake does not form during operation.

Abstract: A filtering method and apparatus pass the suspension (e.g. green liquor) to be filtered in a falling film down a first side of a filtering surface of a filter element at a different (higher) pressure than a second side, so that due to the pressure difference prevailing across the filtering surface the filtrate flows through the filtering surface and separated solids substantially remain in the suspension, without forming an undesirable solids layer on the filtering surface. A uniform liquid film falling on the filtering surface is generated by recirculating suspension from the bottom of the filter housing to an upper portion of the filter element. Nozzles may direct flow toward the filtering surface in localized areas. The method may be practiced continuously or in batches.

Abstract: A fractional filtration apparatus, used for obtaining cutting oils fractionally cleaned by using one filtration apparatus so as to reuse the separated cutting oils in accordance with the types of machining operations, includes a plurality of liquid tanks for fractionally storing the cleaned cutting oils, a filtration target cutting oil storage tank for temporarily storing a filtration target cutting oil charged through a charge port, rotatably driven filtration drums, dividing the liquid level of the cutting oil and being pivotal in the filtration target cutting oil storage tank, each drum having a side-surface opening in at least one surface thereof in order to let a filtered cleaned cutting oil flow into the cutting oil tanks, and each drum being provided with filters of different mesh sizes, injection nozzles for reversely washing the filters provided on the outer circumferential surfaces of the filtration drums, and dip-up members, disposed at a predetermined intervals, for continuously conveying the cutt

Abstract: An improved food debris filtering apparatus for a dishwasher and a method thereof capable of more effectively discharging food debris by separating the same from washing water and resupplying the filtered washing water so as to wash dishes, so that dish washing efficiency is increased, which includes a filtering apparatus for filtering washing water polluted during a dish washing operation; a washing water circulation unit for supplying the washing water filtered by the filtering apparatus to a spray arm; a washing water discharging unit, such as a discharging pump, for discharging pan of washing water lo containing food debris to the outside of the system; a flowing path opening/closing unit disposed at a washing water discharging path for selectively opening/closing the washing water discharging path in cooperation with the washing water circulation unit or the washing water discharging unit; and a food debris gathering and storing unit disposed between the washing water circulation unit and the washing wat

Abstract: A screening chamber for filtering paper coatings is cleaned with the use of a plurality of water sprays. The water sprays are provided by nozzles located on spray bars positioned transversely across the width of the screening chamber. The nozzles are oriented to direct selected spray patterns tangentially against the screens, and against the interior surfaces of the screening chambers, to remove particulates, debris and other contaminates which collect on the screen during the filtering process.

Abstract: A filtration apparatus and method having a housing, a filter element, an inlet, a first discharge outlet and a second discharge outlet. The housing includes a bottom and an upwardly extending surrounding wall. The filter element is disposed in the housing and spans the surrounding wall with the filter element spaced above the bottom of the housing to define an upper chamber and a lower chamber, and the filter element being angled, preferably 45 degrees from the horizontal, so that one end of the filter element is lower relative to the other end. The inlet is in fluid communication with the upper chamber for receiving waste water containing particulate contaminants. A first discharge outlet is in fluid communication with the lower chamber for discharging filtered waste water. The second discharge outlet is in fluid communication with the upper chamber adjacent the lower end of the filter element for discharging filtered particulate contaminants.

Abstract: A filter-dryer unit has an agitator having an agitator arm provided with gas discharge nozzles directed at the bottom wall, which includes a liquid discharge filter element, of the vessel of the filter-dryer unit. High pressure, high velocity gas is discharged through the nozzles to break up and remove the heel, consisting of finished product not expelled by agitator action. Product particles from the heel, after the heel has been broken up, are removed by agitator action and by the pressure of the gas discharged through the nozzles, through a standard product discharge opening. A separator/filter unit is provided to separate particles from the gas being discharged through the vessels discharge opening. The agitator arm is provided with a nozzle directed at the side wall of the vessel to remove any residual product on the side wall and a nozzle directed at an angle to the side wall to facilitate removal of the heel adjacent the side wall.

Abstract: A self-cleaning fluid filtration system is presented and which includes a tank having a bottom wall and a side wall together forming a fluid chamber. An inlet is located in the bottom wall for receiving fluid to be filtered. A tube extends from the inlet upwardly into the chamber for directing fluid upwardly through the tube. The tube has perforations therein for directing fluid to flow outwardly therefrom. A platform is carried by the tube intermediate its ends and extends radially outward therefrom toward the side wall of the tank. A perforated rigid basket in the chamber surrounds the tube and has an open lower end mounted to the upper surface of the platform and a closed upper end located above the upper end of the tube. A collapsible fluid-permeable filter bag is located in the chamber intermediate the tube and the basket.

Abstract: The present invention relates to a filter apparatus for separating solids from a liquid, said apparatus comprising an outer shell (1), a pipe (2) attached thereto for liquid infeed, a filter cartridge (3) formed by ring-shaped elements placed inside said outer shell, the rings being spaced at a distance from each other so as to provide horizontally outward flaring slits (4) between the rings, through which slits the liquid is adapted to flow, a discharge pipe (5) for the removal of the liquid from the space between the outer shell and the filter cartridge, and a second discharge pipe (6) for the removal of solids from inside the filter cartridge. Conventional filter equipment have a complicated construction and require the use of separate cleaning equipment.

Abstract: A liquid-cleaning filter system with distillation capability has twin permanent filter assemblies, each utilizing a wire mesh filter cartridge which is backwashed using an internal sprayer nozzle assembly. During the normal operation of the filter cartridge, which is located in a pressurizable inverted bell housing, contaminates are filtered through a sheet of wire mesh arranged in a star configuration on a frame structure within the filter cartridge. The liquid filtering system is especially adapted for use in dry cleaning operations where a layer of diatomaceous earth and a layer of activated carbon deposited are on the wire mesh at the start of normal forward flow. Contaminates collect on this filter bed, thus cleaning the dry cleaning solvent.

Abstract: Organohalides are dehalogenated by bringing an organohalide or a mixture of two or more organohalides into contact with an alkali hydroxide in an alcoholic solution and in the presence of a catalytically effective amount of a heterogeneous transfer hydrogenolysis catalyst. The process can be carried out at relatively low temperatures (50.degree.-150.degree. C.) and at low pressures. No added hydrogen is employed, in excess of that contained in the ambient atmosphere.

Abstract: A filtration device comprises a housing, a filtering apparatus, a first guide tube, a second guide tube, an impurities discharging tube and a valve. The filtering apparatus is provided therein with a swiveling spray tube pivoted thereto. The swiveling spray tube is provided in the wall thereof with bevel through holes. The housing is provided therein with a high pressure guide tube which has an inner end aligned with an axial hole of the swiveling spray tube and further has an outer end that is connected with a source of a high pressure washing fluid so as to allow the high pressure washing fluid to be injected into the swiveling spray tube for washing away impurities deposited on the inner wall surface of the filtering apparatus.