Abstract: A separating system and method, of which the separating system includes a lower vessel including an inlet configured to receive a mixed fluid comprising a solid and a liquid. The lower vessel is configured to separate at least some of the solid from the liquid so as to produce a partially-separated fluid. The system also includes a first screen vessel configured to receive at least a portion of the partially-separated fluid, the first screen vessel including a first shell, and a first screen that is positioned within the first shell and at least partially removable therefrom, and a second screen vessel spatially oriented parallel to the first screen vessel and configured to receive at least a portion of the partially-separated fluid. The second screen vessel includes a second shell and a second screen that is positioned within the second shell and is at least partially removable therefrom.

Abstract: A portable bubble water bottle includes a shell, a separation tank, a bottom cover, and a gas supply device. A liquid storage space and a gas supply space are individually defined on the upper and the lower sides of the separation tank. A hole is defined on the separation tank to connect the liquid storage space and the gas supply space. The gas supply device includes a gas cylinder and a control valve in the gas supply space. The opening of the gas cylinder is toward the bottom. The gas is transferred from the gas cylinder, through the control valve and the hole of the separation tank, to the liquid storage space. The invention has the advantages of increasing the dissolved gas in liquid, great safety in use, easy operation, reducing the gas escape rate, and customization in use.

Abstract: A method and apparatus for filtering fluid for a food processing system is disclosed and includes a fluid inlet, a filtered outlet, a drain outlet, two filters—each having inlets, inlet valves, drain outlets, drain valves, filtered outlets, and return valves. A first recycling flow path includes an inlet valve, an inlet, a filter, a return valve, and a filtered outlet. A first drain flow path includes the inlet valve, the inlet, the filter, the drain valve, and the drain outlet. A second set of like flow paths for the second filter is provided. A controller is connected to control each of valves, and the controller has a first filter purge module, a first filter filter module, a first filter power purge module, a first filter off module, second filter purge module, a second filter filter module, a second filter power purge module, and a second filter off module.

Abstract: An integrated fuel filter device for a vehicle includes a fuel filter disposed at a fuel feed line between a bombe and an engine, a pump for delivering fuel inside the bombe to the engine via the fuel feed line, a first fuel filling line connected to an inlet of the fuel filter and configured to guide fuel refueled from an outside of the vehicle to the inlet of the fuel filter, a second fuel filling line connected between an outlet of the fuel filter and the bombe and configured to guide the fuel passing through the fuel filter to the bombe, and a variable shut-off valve for controlling a flow of the fuel delivered from the pump to the inlet of the fuel filter and a flow of the fuel delivered from the outlet of the fuel filter to the bombe.

Abstract: The filtering apparatus includes: a casing having an inlet for a fluid from the outside and an outlet for the fluid having filtered therein; filter elements having opposite-end openings, provided in the casing, and each filtering the fluid by allowing the fluid to flow therethrough in inside-to-outside directions; backwashing pipes sequentially connected to the opposite-end openings at different timings between the opposite-end openings of each filter element so as to backwash the filter element by allowing the fluid to flow therethrough in outside-in directions; removers each axially moved in the corresponding filter element by the filtration or backwashing flow, while sliding in contact with the inner periphery of the filter element so as to remove trapped objects; and a backwashing fluid drain pipe coupled to the discharge side of the backwashing pipes and allowing the trapped objects removed by each remover to be discharged to the outside.

Abstract: A four-way valve for a backflush filter system comprises a valve body (3) and a rotating valve core (2) having a valve rod at one end of a central shaft. A valve core port IV (16) is arranged at the other end of the central shaft of the valve core (2). Three ports are arranged in the radial direction of the valve core (2): a valve core port I (13), a valve core port II (14) and a valve core port III (15). The valve body (3) encasing the valve core (2) also has four ports. Three radial ports are respectively a valve body port I (9), a valve body port II (10) and a valve body port III (11), and the other port is an axial valve body port IV (12). By increasing the sizes of the relevant ports and sealing end surfaces, the four-way valve solves the problems that a backflush effect is affected by insufficient inflow rate during backflush of a four-way valve in the prior art, the distribution of the relative positions of three ports of the valve body is single, and sealing is difficult.

Abstract: An apparatus and method prevent entrained solids from entering a pump by directing a process stream through an active upstream filter that removes the solids, and then through a downstream idle filter where the process stream purges the filter of previously retained solids. The flow path is periodically switched to exchange the roles of the filters, so that none of the filters is saturated, and the solids remain in the process flow but bypass the pump. Any need for a low pressure destination for purged solids and purging fluid and/or any environmental impact of dumping process fluid and solids into the environment is thereby avoided. Partially opened valves can be used to divert only part of the downstream flow for filter purging. Selectable paths can be included for which no filters are purged. The downstream flow can be divided and used to simultaneously purge a plurality of idle filters.

Abstract: A filtering unit includes a filtering component having inner and outer walls arranged around each other so as to define an inner space between the inner wall and the outer wall, a filtering mesh partitioning the inner space into a pre-filter chamber and a post-filter chamber, at least said pre-filter chamber being circumferentially compartmented in sectors, a divider arranged coaxially with the filtering component and having distinct distribution columns, and a rotary backwashing distributor having a shutter provided with a discharge opening, the rotary backwashing distributor being mounted to rotate so that said discharge opening is periodically and selectively put into communication with each distribution column, whereby each distribution column periodically and selectively establishes communication between the discharge opening and respective ones of the sectors. The rotary backwashing distributor is in direct contact with the divider.

Abstract: A filter housing can be configured to receive a filter media to form a filter assembly. Water filter media assemblies can be adapted for filter-as-you-pour filtration in the context of container (e.g., pitcher) systems where filtering is achieved as the user pours water from the container. The filter housing can have a frame and an optional casing securable about the frame. The filter assembly can include a filter media within, connected to, or associated with a filter housing. The filter media can be securable in an at least partially curved configuration and/or within, connected to, or associated with the filter housing.

Abstract: A pressure filtration system for cleaning residual quenching water of a gasifying device that gasifies carbon-containing fuels under elevated pressure is provided. The soot water from the quencher is passed to a filter system, which has pressure filter chambers operating alternately in filtering mode under gasifying pressure or in cleaning mode. The filtrate from these chambers is passed to a quenching water reservoir, from which the quencher is fed with quenching water. Only small temperature and pressure losses with respect to the residual quenching water leaving, and only a small additional amount of energy has to be expended to overcome the remaining pressure difference to bring the filtrate that is to be returned back to the gasifying pressure. The residual quenching water is cleaned substantially under gasifying pressure in a pressure filter, avoids flash evaporation of the residual quenching water into the vacuum area, with vapour cooling and a subsequent increase in pressure and reheating.

Abstract: 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.

Abstract: A device for filtering a liquid processing medium used in cutting has an intake and first filter cells with inlet, filter element, and outlet. The filter elements can be back-flushed. A disposal container as well as a suction conveying device are provided. For filtering, the intake is connected by first valves with first filter cell inlets and first filter cell outlets are connected to a discharge. For back-flushing, inlets of the first filter cells are connected through the first or a further valve to the disposal container. A second filter cell with filter element for contaminated processing medium of the disposal container is disposed above or inside the disposal container. The second filter cell, for filtering, is connected by the suction conveying device to the discharge. A cleaning device for the second filter cell is provided so that waste products removed during cleaning pass directly into the disposal container.

Abstract: A reflux backwashing mechanism for automatic fluid filtration, includes a hollow shaft sleeve (12) is located inside of the fluid inversion chamber (2); a blade (11) and a baffle plate (10) are connected with the hollow shaft sleeve (12) which is provided with an opening (9) at a position of the lower part of the baffle plate (10); a hollow core shaft (13) with an upward opening is located inside of the hollow shaft sleeve (12); and the shaft wall of the hollow core shaft (13) is distributed with through holes (14); and the hollow core shaft (13) is installed on an upper baffle plate (4).

Abstract: 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.

Abstract: A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members.

Abstract: A filter device for the insertion of filter elements (28) to be positioned in a filter housing (10) having a filter inlet (20) and a filter outlet (22) for the fluid to be filtered. The filter elements (28) are traversed in both directions for filtration or backwashing. Certain filter elements (28) perform the filtration in a filtration position and at least one additional filter element (28) can be backwashed in a backwashing position to clean its active filtration surface. As the individual filter elements (28) are brought into the backwashing position and are then returned to their filtration position in succession by a pivoting device (30), the filter elements are individually displaced into the backwashing position in a temporal sequence, in contrast to prior art, where an arm-type backwashing device is pivoted towards the individual filter elements to carry out the backwashing process.

Abstract: A filter device includes a plurality of filter elements (21) received in a filter housing having a filter inlet for a fluid to be filtered and a filter outlet for the filtered fluid. Flow through the filter elements (21) is possible in both directions for filtration or backwashing. Because the shut-off element (41) is a fast-closing plate valve (43) actuated by a hydraulic piston (53) and blocks the fluid connection so quickly, a feeding effect is created in the manner of a pressure blow on the backwashed filter element (21). The feeding effect increases the cleaning of pollution on the filter element (21), achieving an improved backwashing cleaning.

Abstract: The invention relates to a device for filtering a fluid, in particular a liquefied plastic, with a housing with backflush channel and screen carrier and filter element whereby, in order to accelerate and improve the backflush effect, one or more displacement cylinders are provided that guide material removed from the production at adjustable high pressure and speed to the screen to be cleaned from the clean screen side to the dirty screen side, whereby an additional pressure generator ensures constant process pressure.

Abstract: The invention relates to a filter for fluids in conduits, consisting of: a tubular filter housing (1); a filtering basket (9) that is coaxial with the filter housing (1) and that is positioned to rotate; a stationary flushing connection (16) for removing substances that have been retained by the filtering basket (9), said connection covering successive parts of the filtering basket (9) and being connected to means for removing the substances. To achieve a simple construction for the filter, increased operational safety for the drive components and the rotational mounting of the filtering basket (9), in conjunction with reduced production and maintenance costs, a fluid-proof drum motor (3) is coaxial with the filter housing (1) and the filtering basket (9) is fixed to the drum (4) of said motor.

Abstract: A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members.

Abstract: The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices, including improved cloth media filter backwashing using a rotating backwash arm assembly.

Abstract: A filter system includes a distribution valve operable to direct a received fluid stream to first and second outlets during respective first and second cycles. A filtering system filters at least some fluid output from the first outlet of the distribution valve during the first cycle with a first filter while back-flushing a second filter and filters at least some fluid output from the second outlet of the distribution valve during the second cycle with the second filter while back-flushing the first filter.

Abstract: A method and apparatus for a backwash system for cleaning an underwater intake filter assembly is disclosed. The backwash system includes an underwater tank coupled on one end to a source of compressed fluid and on the other end to the intake screen assembly. The backwash system includes a U-shaped release conduit that is adapted to release a predetermined quantity of fluid to the intake screen in order to clean the filter assembly of waterborne debris.

Abstract: 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.

Abstract: The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices, including improved cloth media filter backwashing using a rotating backwash arm assembly.

Abstract: A filter installation and method, especially a seawater filter installation and method, includes at least one fluid line (18,20) for transporting a biological fluid, a filter device (54) mounted in the fluid line with at least one filter element (22) in a filter housing (10), and a device for biological decontamination. The device for biological decontamination contains active substances that can be introduced into the filter housing (10), such as inert gases or special metals, ensuring that toxic impurities cannot enter. The active substances used are ecofriendly unlike chemically produced fungicides and herbicides.

Abstract: A backwashable filtering device for thermoplastic plastics material is disclosed. The device can filter thermoplastic plastics material through one or more nests of screens in the filtering position, while submitting some nests of screens to the backwashing process that cleans them. The filtering position and the backwashing position are selectable by displacing one or more carrying bodies with respect to a housing and/or by displacing one or more control bodies with respect to the carrying bodies. The backwashing can be performed over an entire nest of screens or over a portion of a nest of screens. The nests of screens can be straight or curved.

Abstract: A “polishing” water filter for the micro-filtration of fine particles comprises a porous ceramic substrate, having an average pore size in the range of about 0.2 to about 100 microns, which is coated with porous rice hull ash (RHA) particles that have an average particle size that is greater than the average pore size of the ceramic substrate. The ceramic substrate preferably has an average pore size of about 30 microns; the RHA has an average particle size in the range of about 120 to about 150 microns and an average pore size in the range of about 0.5 to about 10 microns.

Abstract: The disclosed method and apparatus involves the use of sequential filters for the purification of liquid. The sequential filters may each produce rejects that can be processed separately in their respective treatment apparatus, which can be fine-tuned to the specific reject that it treats. Alternatively, the first reject may be treated while the second reject may not be treated. The rejects (whether treated or not) may be combined into a combined flow and then be recycled in the sequential filters.

Abstract: A filter system includes a distribution valve operable to direct a received fluid stream to first and second outlets during respective first and second cycles. A filtering system filters at least some fluid output from the first outlet of the distribution valve during the first cycle with a first filter while back-flushing a second filter and filters at least some fluid output from the second outlet of the distribution valve during the second cycle with the second filter while back-flushing the first filter.

Abstract: A filtration apparatus including a tubular element (17) for purifying wastewater that flows from outside to inside, and a spray tube (21) for spraying cleaning water onto the external peripheral surface of the tubular element. In the first step, the external peripheral surface of the tubular element is cleaned and most of solid matter is removed. In the second step, compressed air is fed to the tubular element, and fine solid matter that is embedded in the filter is removed by backwashing.

Abstract: A quick countercurrent-type water purifier configured with two filters, two motors, a control circuit, a purified water storage tank and a waste water tank, wherein a pipe extends from the waste water tank. Moreover, a raw water inlet pipe connects to the pipe through one of the motors that thereon forces water through branch pipes into water inlets at bottoms of the two filters. A pipe branches out from each of the two water inlets, and connects to the waste water tank. A flowmeter is configured at a water outlet at a top portion of each of the filters. An electromagnetic valve subject to control by control circuit is configured at each of the water inlets and the water outlets of the two filters, thereby achieving quick reverse washing of contaminants from filter cores of the filters and providing large quantities of purified water for industrial usage.

Abstract: The invention concerns a method and an apparatus for producing a metal hydroxide, in particular magnesium hydroxide, from a salt solution, wherein the metal is firstly precipitated from the salt solution and the suspension produced in that way is then filtered. The object of the invention is to provide a method and an apparatus which permit simple inexpensive and rapid production of metal hydroxide, in particular magnesium hydroxide, in a high state of purity. According to the invention that is achieved in that the suspension is filtered through at least one filter (13-17) of a cross-flow filtration installation (13-17), and that a permeate produced by filtration of the suspension is fed to the cross-flow filtration installation (14-17) again.

Abstract: A gas/liquid reaction with a liquid containing at least one chemical compound in solution which can react with a gas in the presence of a solid catalyst maintained in suspension in the liquid, the reaction being carried out with separation (recovery) of said solid catalyst by filtering. Recirculating a fraction of the reacted solution without involving any additional pump or ejector, wherein the recirculated fraction provides for a primary filter for reacted solution being tangentially skimmed over.

Abstract: In the backflush filter (10) according to the invention, in which the flushing back of the filter inserts (15) which are received in several filter chambers takes place by means of flushing filtrate loaded by compressed air, the flush valve (35) and the mud drain valve (39) are actuated by a common drive, whereas the valves or the valve bores (45, 46) are dimensioned in such a manner that the flush valve only releases the connection to the filtrate chamber (19?) of the filter inserts (15?) to be flushed back, when the mud drain valve has already at least partially released the connection between the mud chamber (24?) of the affected filter chamber (14?) with a mud outlet (40). By this, it is ensured in a particularly simple manner that at the backflush process the pressure level in the mud chamber has already dropped before the filtrate for the backflush is loaded with compressed air (see FIG. 2).

Abstract: A filter has three filter elements, e.g., screens, for trapping particulate material while allowing passage of a fluid. The second sides of each of the first and second screens are connected to an intermediate passage, and the second side of the third screen, and the intermediate passage, are connected to a filter outlet port. The filter has two alternately selectable configurations. In a first configuration, the first side of the first screen is connected to a filter inlet port, and the first side of the second screen is connected to the first side of the third screen. In the second configuration the first side of the second screen is connected to the inlet port, and the first side of the first screen is connected to the first side of the third screen. The first and second screens alternately filter particulates which are subsequently flushed and then trapped by the third screen for periodic removal.

Abstract: A method and apparatus of purifying feedwater to remove impurities including suspended solids therefrom, the method suitable for using in-line water pressure to permeate water through hollow fiber membranes and to backflush the membranes to remove solids collected or deposited thereon.

Abstract: Modules of ultrafiltration or microfiltration membranes are arranged in a tank open to the atmosphere to substantially cover the cross sectional area of the tank. A filtration cycle has permeation steps and deconcentration steps. During permeation, supply of feed substantially equals feed removed and little if any aeration is used. During deconcentration, aeration with scouring bubbles is provided with one or both of backwashing and feed flushing. In feed flushing, feed water is supplied to the tank from below the modules. Excess tank water created during deconcentration flows generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank.

Abstract: Modules of ultrafiltration or microfiltration membranes are arranged in a tank open to the atmosphere to substantially cover the cross sectional area of the tank. A filtration cycle has permeation steps and deconcentration steps. During permeation, supply of feed substantially equals feed removed and little if any aeration is used During deconcentration, aeration with scouring bubbles is provided with one or both of backwashing and feed flushing. In feed flushing, feed water is supplied to the tank from below the modules. Excess tank water created during deconcentration flows generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank.

Abstract: A backflushing filter for filtering oil includes filter candles 22 which are open at both ends 24, 34 and disposed around a rotary shaft 1 in a filter housing. A cleaning device is moved in conjunction with the rotary shaft and includes upper and lower flushing cocks communicating with an outflow valve via the shaft for cleaning the candles during a backflushing operation. The upper flushing cock 27 is offset by an angle in the direction of rotation in relation to the lower flushing cock 37. A lower closure element 38 moves in conjunction with the upper flushing cock at the opposite end of a filter candle(s) selected for backflushing. Likewise, an upper closure element is associated with the lower flushing cock. The candles can be reverse-flushed in opposite directions and at different times by the flushing cocks and closure elements. The flushing cocks and closure elements are moved inside annular deflection hoods 60, 70.

Abstract: A spiral wound membrane module comprises a spiral wound membrane element including a separation membrane having high back pressure strength. The flow rate of permeate in filtration of the spiral wound membrane element is preferably set to 0.5 to 2.0 m3/m2/day, and the filtration time is preferably set to 10 to 300 minutes. The flow rate of wash water in washing is preferably set to 1.0 to 4.0 m3/m2/day, and the washing time is preferably set to 10 to 300 seconds. In such ranges, the ratio of the permeate volume in filtration to the permeate volume in back wash reverse filtration is set to be not more than 600.

Abstract: A filtering apparatus and method comprises parallel filtering elements backflushable with the pressure of the filtered flow. At least one washing organ connecting alternately to the different filtering elements, forms a discharge channel for the washing flow. A freewheel clutch is connected to a rotating axle of the washing organ, converting reciprocating movement generated with the pressure of flow in the filtering apparatus and with pressure alternating with it into a continuously parallel, stepping rotary movement of the washing organ. The mechanism containing the clutch may be outside the filtering room of the apparatus, and based on the alternation of the higher pressure of the flow filtered in the apparatus and the lower pressure from the discharge channel. The freewheel clutch is articulated to a piston in the cylinder, and is moved back and forth with the pressure difference, controlled by the channels relaying the pressure and by the valves.

Abstract: A backflush filter device for filter elements (22) is incorporated in a filter housing (10)having a filter inlet (18) and an outlet (20) for the liquid to be filtered. The filter elements (22) permit flow in both directions for a filtration, or backflush. One filter element (22) may be performing a filtration and, simultaneously, at least one other filter element (22) may be backflushed to clean its effective filtration surface. To assist the backflushing, a vacuum device (42) is provided. The vacuum device generates a vacuum at the filter element (22) to be backflushed. The efficacy of the ongoing backflush is increased to be able to remove even the toughest contaminants. The cleaning process uses little energy and occurs in a defined manner, such that the backflush volumes may be both specified and minimized.

Abstract: An apparatus is described for withdrawing filtered permeate from a substrate contained in a reservoir at ambient pressure. The apparatus includes a plurality of membrane assemblies. Each assembly has a plurality of hollow fiber filtering membranes, immersed in the reservoir, at least one permeating header with the membranes sealingly secured therein, and a permeate collector to collect the permeate sealingly connected to the at least one permeating header and in fluid communication with lumens of the membranes. The membranes of each assembly extend generally vertically upwards from a first header during permeation. One or more sources of suction are provided in fluid communication with the lumens of the membranes of each assembly through the permeate collectors and apply sufficient suction to withdraw permeate from the lumens of the membranes. An aeration system for discharging bubbles assists in keeping the membranes clean.

Abstract: A liquid filtration device having a backwashing feature in which liquid flow through the device is reversed with a plate being rotated under the filtration cartridges to allow reverse liquid flow into the individual filtration cartridges to produce the backwashing action.

Abstract: A backflushable filtering apparatus for fuel or luboil filter of a motor includes inlet and outlet flow channels, parallel filtering elements open from their ends, in which infiltration occurs from through their jackets, and washing organs at different ends of the filtering elements, the organs connecting alternately to different ends of the filtering elements to provide discharge channels for the backflushing of elements generated by the pressure of the filtered flow. Each of the filtering elements is divided in two by a solid partition or constriction between its ends so that the connected washing organ generates backflushing only to a part of the element length at a time. The parts of the filtering element are functionally independent, and the one part may be backflushed at the same time as the filtering goes on in the other part.

Abstract: A filter element assembly used to filter liquid-state process stream. The assembly includes first and second tubes. A ring is seated in one of the tubes. One or more filter elements extend from the ring into one of the tubes. The ring has a lip that extends beyond the outside of the tubes. Opposed open ends of the tube abut opposed surfaces of the ring lip. A seal surrounds the open ends of the tube and the ring lip. A clamp surrounds the seal. Liquid that flows between the ends of the tubes and the ring lip forces the seal against the clamp and the outer tubes to prevent the liquid from flowing beyond the seal.

Abstract: The aim of the invention is to improve the backwashing action of a backwashable filter for liquids comprising the following: a filter body which is located in a housing and which separates an incoming flow chamber from an outgoing flow chamber and a backwashing channel which lies adjacent to the filter body, is situated in the outgoing flow chamber and has a backwashing opening that faces towards the filter body, said backwashing channel also communicating with a source of a cleaning medium and said cleaning medium being subjected to pressure in the backwashing channel, and the filter body and the backwashing channel being moveable in relation to each other. To this end, the filter body has links on a side facing towards the backwashing channel which are set apart from each other in the direction of motion.

Abstract: A spiral wound membrane element is formed by covering a spiral membrane component prepared by winding a plurality of independent or continuous envelope-like membranes around the outer peripheral surface of a water collection pipe through raw water spacers with a separation membrane and further covering the same with an outer peripheral passage forming material. In washing, permeate containing a chemical is introduced from an opening end of the water collection pipe while the permeate derived from the outer peripheral surface of the water collection pipe is discharged from at least the outer peripheral side of the spiral wound type membrane element and raw water is axially fed along the outer peripheral portion of the spiral wound type membrane element. In filtration running, the raw water in which bubbles are diffused by an air diffuser may be supplied to the spiral wound membrane element stored in a pressure vessel.

Abstract: A backflushable filtering apparatus for fuel or luboil filter of a motor includes inlet and outlet flow channels, parallel filtering elements open from their ends, in which infiltration occurs from through their jackets, and washing organs at different ends of the filtering elements, the organs connecting alternately to different ends of the filtering elements to provide discharge channels for the backflushing of elements generated by the pressure of the filtered flow. Each of the filtering elements is divided in two by a solid partition or constriction between its ends so that the connected washing organ generates backflushing only to a part of the element length at a time. The parts of the filtering element are functionally independent, and the one part may be backflushed at the same time as the filtering goes on in the other part.