Abstract: The present invention is related to a water filter and particularly to a water filter with a rotary filter tube, comprising a water filter cylinder and a plurality of filter leaf thimbles so that there is a maximum filter course in a certain filter space for water filtering. It is very convenient to replace the filter leaves (thimbles) outside the water inlet pipe (port).

Abstract: The invention provides a novel apparatus and method for removing liquid contaminant from a well to decontaminate a contaminated aquifer. The apparatus includes a pump capable of moving water and contaminant from below ground surface to a location above ground surface, a motor connected to drive the pump and means connected to power the motor. A water and contaminant inlet are located between the pump and the motor to accept inward flow of water and contaminant to the pump. An outlet pipe connects to the pump and extends above ground surface. A sleeve surrounds the inlet and connects between the inlet and the motor and has an opening to receive water and contaminant. The sleeve is sized to slide in and out of the well and is larger than the outlet pipe. The sleeve creates an annular space around the outlet pipe to permit passage of water and contaminant from the open end to the inlet.

Abstract: A deep oil fryer and filtration system is disclosed wherein the filtration system (B) is disposed within a cabinet (16) of a deep oil fryer (A) having a plurality of vats (10, 12, and 14). Filtration system (B) includes a drawer having a reservoir (20) and an adjacent utility compartment (40). A pre-filter (34) is disposed in a filter basket (30) received in reservoir (20) and spaced above a bottom wall of a reservoir by the legs (32). A drain outlet (28) from the reservoir delivers cooking oil to a pump (70). A flow line system which minimizes retention of cooking oil in the lines includes a reservoir outlet line (74), a filter inlet line (78), a filter by-pass line (80), and a return line (86). Whenever by-pass valve (82) is open and pump (70) is on, pre-filtered oil from filter (36) passes through filter inlet (50) and exits filter outlet (64) without passing through a filter element ( 48) to preheat the filter. The by-passed oil is returned to the cooking vat for rinsing out the cooking vat.

Abstract: An elongated fluid filtering assembly includes an elongated hollow tubular housing and an elongated hollow filter element. The housing defines an elongated flow chamber, a pair of open end ports at opposite ends of the chamber, and an open side port at a side of the chamber between and spaced from the end ports. The filter element is removably inserted into the housing flow chamber through one end port and extends between the housing end ports. The filter element is pervious to fluid flow and impervious to solids, has opposite end openings, and defines an inner flow passage extending between its end openings and within the housing flow chamber.

Abstract: An oil filter for providing coarse and fine filtration of lubricating oil in an internal combustion engine is disclosed herein. The oil filter includes a cylindrical housing closed by a cover containing a coarse-filtering cartridge of pleated paper included between a lower plate and an upper plate, and a fine-filtering cartridge placed between the coarse-filtering cartridge and the cover. The fine-filtering cartridge is supported between a lower base plate and an upper base plate arranged to bear against the cover. Both filtering cartridges have a cylindrical shape with axial recesses extending therethrough. The fine-filtering cartridge is composed of a band of filtering paper disks, the band being bent as an accordion. The upper base plate is integrally formed with to a first end of a barrel with the barrel coaxially extending through the axial recess of said fine-filtering cartridge and partially into the axial recess of said coarse-filtering cartridge.

Abstract: The invention is an improvement in a known cylindrical, annular fluid filter cartridge of the type having a lower end cap supporting spaced, concentric filter elements. The spaced elements define an effluent path therebetween. In known cartridges of the foregoing type, the inner and outer perimeters of the end cap (or either of them) have a significant circumferential "Perimeter of engagement" which seats into a pocket with friction fit. As a result, significant force is required to remove a cartridge, especially a large cartridge, from the housing. The improvement comprises a channel (either a tube-like riser or a manifold) and a discharge port for receiving effluent, e.g., filtered water, from the effluent path. The discharge port (with its relatively small perimeter of engagement) is configured and arranged for attachment to and detachment from an outlet vent located near the bottom of the cartridge housing.

Abstract: Apparatus is disclosed for separation of liquid and solid waste materials from a mixture or other combination of such materials. A container is provided with a vertically disposed interior screen or perforated wall that is capable of retaining solid material while permitting liquid material to pass therethrough. The perforated wall divides the container into first and second portions. Waste material is provided to the first portion, and liquid material is removed from the second portion. Preferably disposed in the first portion is an onion bag or other porous, screening or filtering material for receiving the combination of liquid and solid material and retaining of the solid material. Liquid material can be removed from the second portion via a drain, or alternatively by a pump controlled by a liquid level sensor. The pump would be operated whenever the liquid level sensor sensed a sufficiently high predetermined level of liquid in the container.

Abstract: The fluid filter (10) for fuel has a wound filter element (17) arranged in the housing (11) surrounded on its bottom end face (22) by a funnel-shaped welded-on cover cap (18). The cover cap (18) made of thermoplastic has an annular welding surface (25) which extends perpendicularly relative to the longitudinal axis of the filter and which is welded at least to the outermost complete turn (29) of the winding (17). An adhesive-free connection (32) between the wound filter element (17) and housing (11) thereby is formed. The preassembled wound filter element (17, 18) which can be handled easily is suitable for cold assembly on universal production lines and for different models.

Abstract: A system for purifying water is provided having a series of filtering systems connected in series in a predetermined order along a flow path of the water to be purified. The filtering systems used in the invention include air striping, aeration, gravity separation, inclined plate coalescing separation, diffused air floatation, metallic oil attraction, static solid separation, hydrocarbon adsorption and absorption, chemical flocking, ozone, and coalescing centrifugal separation. The combination and relative order of placement of these filtering system acheives an improved filtering result.

Abstract: A filter assembly for filtering the lubricating oil of an internal combustion engine includes a filter base, a cover for the filter base, and a spin-on filter cartridge attached to the filter base by way of a conventional threaded mounting stud. A filter screen is clamped between the cover and filter base and is of a sufficient mesh size to trap large particles that can be examined by tbe human eye, thereby permitting smaller particles to pass through the screen and to be trapped in the filter cartridge. When the screen becomes clogged, a relief valve opens a bypass passage permitting all lubricating oil to flow directly into the filter cartridge.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter element cartridge. The cartridge includes a dual stage filter system wherein fuel flows axially to a primary filter element for removing particulate matter and coalescing water droplets and axially to a secondary filter stage which functions as a water barrier. The filtered fuel flows axially and exits through an outlet passage in the base. Water may be collected in a sump. The cartridge is retained on the base by a collar which engages against a roll seam structure of the cartridge. In one embodiment the base has a cannister configuration for receiving the cartridge.

Abstract: A filter arrangement disposed in a fuel tank of an automotive vehicle has a flat upper section made of mesh. A lower section made of mesh is joined to the upper section to define a space between the upper and lower sections. The space is filled with fuel filtered by the upper and lower sections and communicates with a fuel pump. The upper and lower sections are different in shape and therefore deform differently under suction due to operation of the fuel pump. This prevents the filter arrangement from collapsing under suction, thereby effectively ensuring a fuel flow passage leading to the fuel pump.

Abstract: A fuel filter assembly employs a base which mounts a disposable filter element cartridge. The cartridge includes a dual stage filter system wherein fuel flows axially to a primary filter element for removing particulate matter and coalescing water droplets and axially to a secondary filter stage which functions as a water barrier. The filtered fuel flows axially and exits through an outlet passage in the base. Water may be collected in a sump. The cartridge is retained on the base by a collar which engages against a roll seam structure of the cartridge.

Abstract: The invention provides a faucet-mounted water filter comprising an upright tubular diverter body that is adapted to be secured to the open end of the water faucet. At the bottom of the diverter body is a water outlet through which unfiltered water can be dispensed. In the diverter body is a valve with a valve outlet duct projecting from one side of the diverter body. A manually movable valve handle projects from the diverter body and is connected to the valve for directing the flow of water either through the water outlet (when unfiltered water is required) or for diverting water through the outlet duct. A filter housing is mounted upon the duct and is preferably connected to the diverter by means of the duct. A carbon block filter element is provided in the filter housing which includes a vertical water inlet surface on an outside wall and a water outlet at the bottom. The filter housing includes an annular water distribution chamber for unfiltered water which surrounds the filter element.

Abstract: A device for a dishwasher comprising a collecting container (11) for dishwater, the container being situated at the bottom of the tub, the container communicating with the inlet side of a circulation pump and with the inlet side of a drain pump. The inlet sides of the circulation pump and of the drain pump are at least partly separated from each other by means of a filter (26). By this arrangement, a self-cleaning filter having a protected position is achieved.

Abstract: A filtering device to be mounted in a water basin for aquarium fishes, comprises a vertically extending tubular filter case attached to the wall surface of the water basin and having a filtering chamber and closed upper and lower ends, a vertically extending filtering material accommodated in the interior of said filter case to divide the filtering chamber into an outer unpurified chamber and an inner purified chamber, a vertically extending suction pipe being fixedly secured to the filter case in the purified chamber and communicating with the lower end of the purified chamber, the filter case being perforated with a water intake port communicated to the unpurified chamber, and a pump unit being mounted on the filter case so as to circulate water in the suction pipe from the upper end of the suction pipe into the water basin.

Abstract: A drain pipe filter which includes a wire cage, first and second circular rims and a plurality of oil absorbing elongated fibers. The filter is placed within a drain pipe and functions to absorb oily contaminants exiting a storm drain. The first and second circular rims which are formed of a flexible material are molded integrally with the wire cage providing a water tight seal and flexibility within the environment of the drain pipe. The oil absorbing elongated fibers are adhered to the wire cage in a plurality of locations and are also adhered to an inner conical wire which is integrally formed with the second rim.

Abstract: A liquid filtration device includes a tubular container having an end wall at one end with an emptying orifice therein and a detachable cover closing the opposite end. A filling orifice is disposed in the container adjacent to the cover and a fixed filter is secured in the container immediately adjacent the emptying orifice. A movable filter is disposed in the container for movement between the cover and the fixed filter by means of an operating component connected to the movable filter and extending outwardly of the container.

Abstract: An axial oil filter including at least one pair of axially aligned filter elements includes an elongate filter body and a removable filter cartridge. The filter elements are mounted on an axial conduit which is a part of the filter cartridge, and the filter cartridge placed in the filter body so as to define upper and lower chambers, and a bypass flow path between the upper and lower chambers. Fluid to be filtered may flow into either of the chambers and will flow upward through the lower filter element and downward through the upper filter element. The filtered fluid is collected from a passage defined by a screen between the two filter elements, and passes outward from the filter through the outlet port.

Abstract: A completely sealed fuel filter comprises an open mesh support and a closed tubular perforate body covering the support of a material having openings there throughout its surface sufficiently small in the micron range so as to pass fuel therethrough, but not aqueous solutions present in fuel and contaminants. The body has an outlet. A connector surrounds the outlet and is secured to the body adapted for coupling the filter to the inlet of a fuel pump. An outlet patch of a material with openings in the micron range as the body spans and covers the outlet and is peripherally secured to the body to thereby completely seal the filter.

Abstract: A compact portable wastewater treatment apparatus for treating oil contaminated waste water having a support structure with a containment tank on said support structure for receiving waste water. A mixing means on the support structure is also provided for mixing the waste water with a desired amount of materials to form a flocculent with the oil of the oil contaminated waste water. Furthermore, filters are included on the support structure for filtering the flocculent from the waste water with a pump structure for transporting the waste water within the system.

Abstract: An apparatus and method are provided wherein liquid is removed from a liquid-solids mixture by employing both filtration and low pressures to achieve vaporization of liquid. The mixture is introduced to a vessel in which the mixture is filtered so that a substantial portion of the liquid is withdrawn from the vessel. The vessel is then depressurized to an extent necessary to vaporize a substantial portion of the remaining liquid. Such vapor is withdrawn from the vessel. During vaporization, the contents of the vessel are agitated and heated.

Abstract: A cartridge for a water filter system has a closed housing with only an inlet and an outlet formed in the lower surface thereof. A discharge tube extends from the outlet at the bottom, through the housing, to a position near the top of the housing. There, an elongated sleeve of filter material filters the water leaving the housing. The space between the inlet and the filter sleeve is filled with three different filter materials, most of which is activated charcoal.

Abstract: In a fluid filter having a filter medium comprising upper and lower layers defining therebetween a fluid receiving space into which the fluid to be filtered is introduced, a spacer is positioned between those layers in order positively to hold them apart, thereby significantly to increase the filtering capacity of the filter unit.

Abstract: A filtering system for use in coextrusion apparatus, and particularly for removing carbon particles from a core extrudate of thermally degradable barrier material which has been preencapsulated with a preencapsular material. The filter includes a casing and a frame mounted to the casing. A coarse filter screen through which the component streams can flow is also provided. The coarse filter screen is mounted to the frame and is composed of a web of woven strands having a sufficiently small diameter so as to permit the preencapsulated core extrudate to pass through and emerge from the coarse filter screen without substantial mixing of the barrier material and the preencapsular material. The fine filter screen is supported by the coarse filter screen upstream of the coarse filter screen.

Abstract: A filter device for a fuel tank includes a suction pump main body contained within a fuel tank, a generally cylindrical mounting member mounted upon a bottom portion of the pump main body, and a filter attached to the bottom portion of the pump main body through means of the mounting member. The filter comprises a net. The net is folded over upon itself such that an upper net piece and a lower net piece are vertically overlapped with respect to each other. The upper net piece is formed with a through hole for permitting an upper portion of the mounting member to pass therethrough. The peripheral portions of the net pieces are welded to each other so that the filter is formed as a flat, bag-shaped structure defining an inner enclosed space. The upper portion of the mounting member is connected with the bottom portion of the pump main after passing through the through hole. The inner enclosed space of the filter is in fluid communication with the pump main body by means of the mounting member.

Abstract: A fluid filtration apparatus is disclosed particularly usable with a perforate tubular fluid conduit as normally used for filtration of cleaning fluids and the like wherein the filtration apparatus includes a plurality of filter elements being generally cylindrical and defining a central channel therethrough to be adapted to receive the fluid conduit extending therebetween. Also included are a plurality of gasket assemblies positionable between adjacent filter elements to minimize passage of cleaning fluid therethrough to facilitate cleansing of the fluid. An outer retainer is utilized for compressing the individual filter element against the filter gaskets in such a manner as to provide a continuous filtration media along the entire length of the tubular fluid conduit and to prevent outlets for fluid emanating therefrom without passage through filtration media.

Abstract: A filtration system is provided for a dry well in the form of a buffer tank made of concrete to remove sediment and pollutants from water supplied from a header to an inlet pipe in the tank, so that the water exiting from an outlet pipe is free of particulate matter and pollutants. This is accomplished by providing a sediment pit and a baffle at the inlet side of the tank and then passing the water through a multiple stage set of filters having different aperture sizes. These filters remove particles and pollutants from the water as it passes through the buffer tank on its way to a dry well drain pipe attached to the outlet of the buffer tank.

Abstract: A method and apparatus for cleaning cooling tower basins. The apparatus includes a reservoir and large pipe extending from the tower basin to a lower level to act as a siphon. A water supply can fill the large pipe, and a valve can be opened to start the siphon. A cleaning tool remains below the water level in the basin to maintain the siphon while the basin is cleaned. The makeup water valve maintains the desired water level in the basin, so the tower can remain in operation during cleaning. The material removed from the basin is strained and the waste water is disposed of through conventional sewerage.

Abstract: A filter and water separator for use with liquid hydrocarbons such as aircraft fuel includes a horizontally directed housing and within the housing a first set of filtering and coalescing elements connected to the inlet port of the housing and a parallel arranged set of separating elements arranged parallel to the filtering elements and communicating with the outlet ports in the housing. Each separating element is provided in its interior with a coaxially arranged hollow cylinder communicating at one end with the outlet port and having an inlet opening at its opposite end. The cylindrical wall of the hollow cylinder is formed with a plurality of inlet openings, the combined cross-section of which increases from the end face inlet opening toward the outlet port.

Abstract: In a fluid filter having a filtering medium comprising upper and lower layers defining therebetween a fluid receiving space into which the fluid to be filtered is introduced, and in which the filter supporting structure comprises a part which extends through both of the layers of the filtering medium, a spacer surrounds that part and retains the filter medium layers spaced from one another thereat, thereby significantly to increase the filtering capacity of the filter unit.

Abstract: A dual filtering apparatus for filtering deep fat frying vat oil includes a remote filtering screen attached to a tub by a flexible conduit for conveying oil and includes a fine filtering assembly that is at least partially provided within the upper chamber of the tub to further treat the oil from the remote filtering screen.

Abstract: The disclosure concerns a hollow cylindrical filter cartridge composed of an annular pleated filter medium surrounding a central perforated plastic tube, the ends of which cartridge and tube are embedded into plastic annular discs for closing the ends of the pleats of the filter media and providing an internal centrally threaded socket adjacent the inside of said perforated tube, which socket has an inner integrally projecting shoulder. Continuous outwardly threaded plastic nipples having a length of slightly more than twice the depth of said sockets to their shoulders provide connections between adjacent axially aligned cartridges which are sealed together by the abutment of the ends of said nipples against said shoulders. A plastic internally threaded cap having a depth greater than half the length of said nipples, may be threaded on the outer end of a nipple extending from a cartridge for closing that end.

Abstract: A low-cost, mass-produced oil purifier of plastic, utilizing reverse internal currents to remove impurities, has a sealed housing with upper and lower parts that interfit. The lower housing part has a circular base and a central, upright standpipe open at top and bottom, that is provided with exterior ledges at different levels on which perforated discs are supported. The upper housing part comprises an inverted shell fitted to the base of the lower part, and having an inverted cup depending from its top wall and surrounding the top of the standpipe. At one side of the inverted cup is an oil inlet on the upper housing part. The top perforated disk imparts a swirl to the incoming oil, which passes downward through the disks to a settling chamber at the bottom, and then in a purified state upward through the disks again to the open top of the standpipe, thence down through the standpipe and out at the bottom of the latter.

Abstract: A comb filter including a first plurality of generally parallel grooves and a capillary including a second groove connected to the first plurality of grooves are integrally formed in a substrate such as by selective etching a surface of a semiconductor substrate. A cover is affixed to the surface and covers the etched grooves. An input line is connected to the filter and an output line is connected to the capillary. A second comb filter can be included in the output line.

Abstract: A pellet dryer is disclosed for removing plastic pellets from entraining water and drying the same. The rotating structure of the pellet dryer is essentially contained and supported on a door of a cabinet, so that the opening of the cabinet door exposes the pellet dryer structure and the interior of the cabinet for cleaning.

Abstract: An apparatus for filtering drilling mud that is being recirculated out of the drill hole, which substantially comprises the flow conveying tubular section having at its first end a flanged base portion sealably attachable to the top portion of the hydril and open-ended at its second end for allowing fluid flow therethrough. Also provided is an outer tank portion encapsulating substantially the upper half portion of said tubular section, the tank portion having an open-ended top portion for receiving flow out of the end portion of the flow conveying tubular section and integrally attached at its bottom portion to the outer surface of the flow conveying tubular section, the outer tank portion defining a container for receiving the flow from the tubular section.

Abstract: An electro-chemical system for liquid filtration for effecting removal of dissolved and suspended solids, undesirable ions, etc, therefrom, and decontaminating same, involving a basic electro-chemical filter device that comprises a canister of cylindrical form that in mounted position is vertically disposed and that defines a bore extending longitudinally of same, with the canister at its upper end being connectable to the source of liquid filrant and being closed off at its lower end. The canister adjacent its lower end is equipped with a cross tube extending therethrough and across the canister bore and having a width that is on the order of seventy-five percent of the width of the canister bore, with the cross tube having a tubular mandrel disposed in same and extending substantially coextensively thereof, and with the portions of the cross tube and mandrel disposed within the canister each being formed to define multiple liquid passing apertures thereabout.

Abstract: A fluid filtering device comprising a housing having an axis and defining an interior chamber. In one preferred embodiment a fluid inlet port is formed at one end of the housing which is open to the chamber while a fluid outlet port is formed on one side and is also open to the chamber. A filter element is positioned within the chamber between the inlet port and the outlet port. A first air bleed conduit within the housing has one end positioned within the outlet port and its other end positioned at the upper portion of the chamber when the housing is substantially vertically oriented. A second air bleed conduit within the housing also has one end within the outlet port and three openings at its other end. One of these three openings is at the uppermost portion of the chamber when the housing is in a corresponding one of three substantially horizontal positions.

Abstract: The disclosure is directed to apparatus for filtering a flow of melted plastic prior to use in an injection molding machine. The apparatus includes a cylindrical filter screen disposed in a cylindrical chamber to define an inner inlet chamber and outer outlet chamber. The incoming plastic enters the interior of the filter screen through an axial passage formed in the screen side wall. The material is thereafter forced radially outward through small filtration openings formed through the screen side wall, leaving filtered material and contaminants at the inner wall. Purging or cleaning of the filter screen is effected by a reciprocating shaft that passes through the cylindrical filter screen and partly defines the inner chamber. The shaft carries an imperforate cylindrical sleeve which slides axially through the inner chamber, wiping the inner cylindrical surface of the filter screen as it goes.

Abstract: A gas filter device, adapted to be installed between an exhaust emission control device and an intake manifold of an internal combustion engine for filtration of the intake manifold gases which pass to the control device upon variations in vacuum, is comprised of a filtering chamber having an inlet port for connection to the intake manifold and an outlet port for connection to the control device, a first filter element positioned in the chamber and including glass fiber, metallic wire, and sintered bronze, a second filter element positioned in the chamber between the outlet port and the first filter element and made of non-woven cloth having a fine texture, a retaining late located between the inlet port and the first filter element and having multiple passageways, and a hat-shaped separating disc having multiple passageways and a head portion installed between the first filter element and the second filter element for keeping the second filter element away from the first filter element.

Abstract: Disclosed is a fluid processing apparatus and method wherein a plurality of alternating, permanently magnetic cathode plates and anode plates having applied thereto frequency controlled, square wave pulses superimposed over a constant base voltage so as to create an electric field which is substantially perpendicular to the magnetic field of the cathode plates. An alternative embodiment includes a centrally disposed electromagnet for creating a second magnetic field. A downstream water coalescer and molecular sieve are optionally employed depending upon the intended use of the apparatus and method.

Abstract: A method and analysis system for the continuous on-stream chromatographic analysis of beverages such as beer. Also disclosed are novel bypass filter devices that are especially suitable for use in the analysis system.

Abstract: An oil-water mixture is introduced into a horizontal trough which is in a container and has baffles directing flow upwardly toward an opening in the container to a trap on the top of the container. Oil separates from the water as it flows along the baffles and moves by gravity separation up into the trap. An interface sensor in the trap opens an oil outlet from the trap whenever a sufficient quantity of oil accumulates. The water flows down from the upper part of the container through a coalescing filter to a water outlet located in the lower part of the container, being a three-stage separator.

Abstract: The present invention relates to a system for automatically recovering the entirety of the excavated materials in the order in which they are raised to the surface.The excavated materials being delivered through the central passage of a double pipe system pass into a strainer pipe 6 discharging into a perforated recovery sheath 5 which is closed at its base. A decompression sleeve 3 encloses the strainer pipe. Air and water are evacuated through the strainer slots 6 and all the excavated materials are deposited at 5 in the order in which they are brought up.The invention is applicable to any reverse circulation drilling system.

Abstract: A lubricating-oil filter with a filter pot arranged on a filter base, which is provided with an assembly opening adapted to be closed by a cover and in which a filter cartridge is adapted to be inserted by way of the assembly opening; a bolt retained at its upper end at the cover and at its lower end in the filter base is provided with an intermediate channel that connects a filtered-oil chamber of the filter pot with a base channel, itself connected with a filter base connection for the outflow of the filtered-oil; the fastening means for the cover are thereby structurally separate from the bolt and are arranged outside of the bolt axis while the mounting support for the upper end of the bolt is located at the bottom side of the cover and the mounting support for the lower end of the bolt is constructed as slide seat.

Abstract: In a separator for oil and water, successive separating stages are located within concentric chambers in a vertical cylindrical container, each chamber having at its upper end a collecting zone for separated oil, and the stages comprise respectively a first stage incorporating a plurality of concentric annular shells of which at least portions are inclined to the vertical and which are located within an open-ended annular chamber through which liquid flows in an upward direction, a second stage comprising a coagulator through which liquid from the first stage is directed upwardly, and a third stage comprising a filter housed within a cylindrical screen located above the coagulator.

Abstract: Apparatus and a method for gravity separating lighter and heavier liquids are disclosed, the apparatus including a vessel with its interior divided by a horizontal baffle into upper and lower spaces, which are in communication at one end. The horizontal baffle is shaped to provide a sloping floor in the upper space. Mixed lighter and heavier liquids are passed into the lower space, forming a heavier, lower phase, containing most of the heavier liquid and a lighter, upper phase containing the lighter liquid and a small amount of heavier liquid. The lighter phase passes into one end of the upper space. The opposite end of the upper space has a vertical baffle to retain the lighter phase above the sloping floor formed by the horizontal baffle. The minor portion of heavier liquid separates by gravity from the lighter phase and flows toward the lower portion of the sloping floor, and the lighter liquid is removed from the vessel through an outlet orifice located at the higher portion of the floor.

Abstract: A fluid dual filter having a primary fine mesh filter element, a secondary coarser mesh element in parallel with the main or primary element and a plurality of bypass valves which are normally closed to block flow through the secondary filter element but which open at an elevated fluid pressure caused by blockage of the main filter element thereby allowing flow through the secondary filter element. The valves are located downstream of the secondary filter element in order to prevent their contamination by any foreign matter in the fluid to be passed through the filter.

Abstract: A settler type separating apparatus comprises a tank for holding liquid having inlet and outlet ports; a plurality of horizontally disposed particle-receiving trays superposed parallel on each other at prescribed intervals, each having a plurality of cavities formed on the upper side; and a screen stretched over the upper open side of the cavities of the tray, wherein impure particles trapped in said cavities are obstructed from escaping by a boundary layer formed by the screen.