Abstract: A tank filtration and dispersion system is provided for use in tanks containing liquid chemicals for filtering, agitating and dispersing the liquid. A housing has an electric motor attached thereto and connected to an impeller located in the housing for rotation upon actuation of the electric motor. A filter is removably attached to the housing and a fluid output is provided for dispersing the fluid drawn through the filter responsive to the actuation of the impeller. The output has a dispersion tube in the tank. A separate dispersion output may be is provided having a venturi and a spaced aspiration sleeve therearound. The impeller has vanes with flat leading edges and curved trailing edges to enhance pumping action.

Abstract: An improved spiral-wound pressure membrane sorbent bed module is disclosed comprising a central permeate conduit around which said spiral is wound, said module also comprising a collection means for each membrane envelope in said module, said collection means communicating with the interior of said envelope along a substantial fraction of one edge of a permeate spacer in said envelope, all said collection means conveying permeate to the interior of said central permeate conduit at substantially the same cross-section of said conduit, the interior of said conduit containing sorbing means.

Abstract: Device for the ultrafiltration of a pressurized high-temperature liquid, having, inside a pressure resistant casing (1), a second casing (11) to which are fastened tube plates (15,16) carrying tubes (14) forming an ultrafiltration wall, and a first set of partitions inside the second casing (11) for channelling the flow of the filtrate. A second set of partitions (27) arranged in the casing (11) above the upper tube plate (16) and partitions placed in the casing (1) underneath the lower tube plate (15) make it possible to channel the fluid to be purified and the concentrate. The part of the filter which incorporates the tubes (14) can easily be removed. The fluid circulates at a constant rate in all parts of the filter.

Abstract: A multi stage oil filter assembly is disclosed characterized by a housing including base and cover members and at least one intermediate member arranged between the base and cover members. A first planar filter member is arranged between the cover and intermediate members and a second planar filter member is arranged between the intermediate and base members. The planar faces of the base and cover members adjacent the intermediate member each contain a plurality of concentrically spaced circular grooves and a radial conduit affording communication between the grooves, whereby fluid is distributed across the planar faces of the base and cover members adjacent the planar filter members. The intermediate member contains a plurality of segmented circular concentrically spaced slots corresponding with the grooves of the base and cover member planar faces.

Abstract: A mass transfer device (60) includes a hollow fiber bundle (10) comprising a generally cylindrical core (14) having opposed ends, a plurality of layers of hollow fiber (12) that have been wound around the core, and binding means (48a, 48b, 48c) such as double- sided pressure-sensitive tape that have been wound around the layers of hollow fiber in a plurality of longitudinally spaced locations along the core and intermediate the opposite ends of the core for providing longitudinally spaced support means for the hollow fiber bundle. The hollow fiber bundle is enclosed in a housing (62) having an inner wall (80) which defines a generally circular opening for receiving the hollow fiber bundle except that the inner wall adjacent a fluid outlet manifold (74) includes an expansion volume (82) for the hollow fibers that are adjacent that fluid outlet manifold.

Abstract: A center valve rotary drum filter includes radially disposed baffles or vanes which extend in the center valve opening from axial surface channels to a central drainage conduit. The baffles provide channels in the center valve opening which collect, direct, and accelerate filtrate flow toward the drainage conduit thereby improving the overall operating efficiency of the filter. The center valve rotary drum filter further includes a curved flow passage between the flow-confining walls. This flow passage is curved toward the central axis of the drainage conduit for directing filtrate flow to the drainage conduit. In a preferred case, the curved flow passage comprises a concavely curved, cone-like member having a broad proximal base and a narrow distal end. The base end is directed toward the one of the radial flow-confining walls opposite the entrance to the drainage conduit, the distal end being directed toward the central axis of the drainage conduit.

Abstract: An apparatus for drain-casting a slip comprises a mold including at least two divisible mating mold portions to form a mold cavity, a slip tank, a pump, air compressors, suction pumps, valves and tubings to connect them accordingly, supporting means of the mold portions, and a moving stand to receive the molded article thereon. The mold portion includes an air-tight vessel and a filter member inside the vessel, the filter member contains a water-drainage means, and the drainage means is communicated with the outside of the vessel. One of the mold portions has a slip supply duct and one other mold portion has an overflow duct, which ducts are communicated with the outsides of the vessels.

Abstract: This invention relates to a blood filter assembly in which blood enters at the bottom end of the assembly, is directed in spirally upward path and then passes through a filter medium. After passing through the filter medium, the blood flows downwardly out of an outlet in the bottom end of the assembly. A gas vent is provided at the top end of the assembly. In its preferred embodiment, the outer shell of the assembly tapers from the bottom end to a narrower diameter top end, the filter medium is generally shaped in the form of a cylindrical tube and a core member is provided radially inwardly of said filter medium and spaced therefrom. This filter assembly is particularly useful for the removal of particulate matter, gas and other foreign materials from blood.

Abstract: An oil filter assembly is disclosed, characterized by a sectional housing and a removable filter member arranged therein. The housing includes base and cover members having adjacent planar faces which contain a plurality of corresponding, circular, concentrically spaced grooves which define a plurality of ribs. A radial groove in the face of each member extends through each of the associated ribs to afford communication between the associated grooves. The radial grooves of the housing members extend diametrically radially outwardly in opposite directions and the housing contains inlet and outlet openings communicating with the radial grooves, respectively. The filter member has a planar configuration, is removably mounted between the base and cover members, and extends between the circular grooves contained in the base and cover members on opposite sides of the filter.

Abstract: A sludge thickening apparatus for dosing sludge with a cationic polyelectrolyte, allowing time for the development of a floc structure, placing the dosed sludge onto a surface through which liquid may drain freely by gravity in such a manner that the floc structure is retained, and removing the thickened sludge from said structure.

Abstract: The invention relates to a filtration apparatus with an upper casing part and a base part, each provided with a fluid chamber and an inlet or outlet respectively, for holding a flat filter plate cut to size which is enclosed between a permeable filter support associated with at least one casing part, and the other casing part, in which structure the two casing parts with inclusion of the flat filter plate cut to size are in the edge area sealed against each other in a leakproof manner and are connected by detachable tightening means.

Abstract: The pressurized chemical dispenser of the present invention is coupled to a conduit through which a supply of pressurized fluid is circulating. The system to which the invention is coupled must also include a device coupled in series with the conduit which creates a pressure differential across the input and output sides of the device such that the pressure on the input side exceeds the pressure on the output side. The chemical dispenser includes an offset cavity which is coupled to the conduit on the higher pressure side of the pressure differential device. A fluid tight reservoir stores a supply of fluid soluble chemical and includes an input and an output conduit. The input conduit has a first end which is coupled to the reservoir and a second end which is coupled to the offset cavity. The first end of the output conduit is coupled to the reservoir while a second end is coupled to the fluid conduit on the lower pressure side of the pressure differential device.

Abstract: A cell filter having a series of filtering cells and a distributor for collecting and adjusting the distribution of fluids passing through the cell filtering surface. Each cell has a planar filtering bed composed of a filtering cloth bearing on a rigid apertured support. Fluid passes through the cloth onto the cell bottom which slants toward a drain channel. The drain channel slants toward a discharge duct connected to a distributor. Guide members in the distributor fractionate, divide, and direct the fluid flowing towards the discharge duct into two parallel adjacent streams. The guide members are a series of baffle plates, located along the top length of the drain channel. The baffle plates are slanted, the plate farthest from the low end of the drain channel having the steepest slant.

Abstract: Apparatus for recovering solvents used for cleaning machine parts and the like from the water used to wash the cleaning solvent from the parts. A fluid-receiving tank has a screen covering the open top of the tank for supporting a part to be cleaned. A splash guard projects above the screen on the back and sides of the tank. A shallow tray is slidably mounted on the tank beneath and closely adjacent to the screen for collecting sludge during a cleaning operation with the water and cleaning solvent overflowing the tray and collecting in the tank below. An inverted U-shaped drain pipe is mounted on the bottom wall of the tank with the inlet of the pipe located closely adjacent to the bottom wall within the tank and the outlet being located externally of the tank beneath the bottom tank wall.

Abstract: A membrane module which includes a unitary, curved, backing support which retains all the U bends, serially connecting the membrane tubes, in a sealing relationship, and which includes an annular permeate-collector ring system at the end of each membrane tube and channels with a permeate manifold passageway, to provide efficient removal and easy cleaning of the permeate flow path.

Abstract: Improved dialyzer construction has elongated tubular casing with enlarged casing ends and longitudinally-extending partitioning that divides its interior into a plurality of generally parallel passageways containing hollow dialysis fibers, the casing ends containing dialyzate flow manifolding and directing means for receiving dialyzate from a supply thereof, directing it from one casing end to the other through one of the passageways around the fibers, and so to and fro through the successive passageways, finally directing the dialyzate out through a discharge opening. The dialyzate flow can in each fiber-containing passageway be counter-current to the flow within the fibers of the liquid being dialyzed. A gas by-pass can be provided in the partitioning at one end to bleed out gas that tends to accumulate at the high point of the to-and-fro dialyzate travel.

Abstract: A hemodialysis unit has an integral partition disposed across the length and width of the interior of the dialysate chamber separating the dialysate chamber into two subchambers. The first of the two dialysate subchambers has a blood perfusion unit floor and the second dialysate subchamber has a blood perfusion unit ceiling respectively, both subchambers having the opposed exterior length and width margins of the blood perfusion unit sealed to the opposed bonding edges of the dialysate chamber. The cross sectional areas of the two dialysate subchambers so formed are adaptively sized to provide a high velocity flow of dialysate solution over the length of the two subchambers, providing a more rapid sweep of the diffusional boundary layer from the exterior of the two opposed faces of the blood perfusion unit, providing a high rate of removal of waste excreta products from a patient's blood.

Abstract: An in-line fluid filter of the multi-piece type having a pair of body sections coaxially secured to each other. A filter element is fixedly disposed transversely across a filter chamber defined by the body sections intermediate a fluid filter inlet and outlet. This filter element includes an annular mounting flange interposed between mating annular body section end faces. A generally cup-shaped filter element support is fixedly located on at least the outlet side of the filter element and is dimensioned so that the filter element is at least partially received in the cup-shaped area thereof. This support includes an annular mounting rim which is also interposed between the body section end faces. The support allows the filter to experience greatly increased fluid pressure differentials across the filter element. The filter element mounting flange and the support mounting rim are dimensioned to at least extend to the outside diameter of the mating body section annular end faces.

Abstract: Periodically operating pressure filter for the concentration of a solid matter suspension, comprising a filtering tank with an input conduit for introducing the suspension to be filtered under pressure, and a drain conduit for removal of the concentrated sludge, and a number of filtering elements suspended from the ceiling, through which the filtrate flows and which are internally in communication with a filtrate collecting tank located above and which thereby collect sludge on their outer surface. The sludge has been arranged to be periodically detached by making the pressure inside the filtering element higher than on its outside. The filtrate is under atmospheric pressure in the collecting tank.

Abstract: A liquid treating unit includes a module comprising a channel member for collecting a product liquid for recovery; a semipermeable membrane member liquid-tightly joined to the channel member and made from a semipermeable membrane strip by alternately folding the strip longitudinally thereof to provide feed liquid passages and product liquid passages on the front and rear sides of the membrane respectively, each pair of product liquid passages defining leaf portions of the membrane being adhered at each end of the passage to liquid-tightly close the product liquid passage only; spacers inserted into the feed liquid passages; and a covering member surrounding the outer periphery of the membrane member. The feed liquid passages therefore have a regulated cross sectional area to permit the feed liquid to flow through the passages in parallel and straight direction at an increased speed relative to the membrane surface, ensuring a reduction in dead space and efficient use of the membrane.

Abstract: A disc filter assembly in which a plurality of filter discs are attached to a central shaft. The central shaft is a fabrication which has a central mandrel. Pipe segments are removably secured around the mandrel with their longitudinal axes parallel to the mandrel's longitudinal axis. The pipe segments have walls which define a trapezoid in cross-section. The walls are positioned such that two side walls define planes which converge relatively close to the longitudinal axis of the mandrel. Each pipe has at least one aperture through which filtrate from the interior of the disc filter segment passes to the interior of the pipe. The pipe is in fluid communication with an end piece having apertures therethrough. The end piece apertures have a trapezoidal cross-section corresponding to the trapezoidal shape of the pipe interior. A wear plate is attached to the outer end of the end piece and has trapezoidal apertures therethrough which are aligned with the apertures of the end piece.

Abstract: A filtration device for effecting separation of a blood cell-free liquid filtrate from a blood cell-containing liquid suspension in continuous laminar flow therethrough, employing a microporous filtration membrane. The filtration flow channels along the surface of the upstream side of the membrane wall are provided with a width across the membrane wall surface which gradually and uniformly increases from the inlet end to the outlet end of the flow channel, whereby the membrane wall shear rate of the suspension in laminar flow through the flow channel will gradually and uniformly vary along the length of the flow channel from a maximum value at its inlet end to a minimum value at its outlet end. Such variation in shear rate corresponds with the variation in the transmembrane pressure conditions along the length of the flow channel so as to enable better control of the filtration operating conditions to insure optimal filtration rates per area of membrane without damage to the blood cells.

Abstract: A refining vat for the separation of wort from spent grain comprises a sieve base and an impervious discharge base which lies below the sieve base and surrounds a central drain outlet. An intermediate base is substantially concentric with and is smaller in diameter than the sieve base, and is disposed between the sieve base and the discharge base and acts as an accumulator and guide element for the wort.

Abstract: An apparatus and method for dewatering rubber crumb in which a slurry of rubber crumb and fines overflowed from a feed tank onto a curved screen for dewatering is subjected to a change in direction away from the screen by a fixed baffle in the feed path upstream of the screen and is then redirected by a second, adjustable baffle onto the screen with the second, adjustable baffle also determining the spacing between the screen and the second baffle and thereby restricting flow from the curved screen onto a coated chute which delivers partially dewatered rubber crumb from the apparatus.

Abstract: A structure for dewatering solids utilizing a rotating cylindrical screen wherein the solids and water are directed to a portion of the rotating screen with the water passing into the interior of the screen and the solids adhering to the external surface of the screen. Doctor means remove substantially all of the solids from the external surface of the screen, after which the screen is washed by the water which has entered into the screen, the water being directed by a baffle into a flowing stream which strikes the screen and passes therethrough in a concentrated mass. The baffle is fixedly carried by a fixed shaft on which the screen is mounted for rotation.

Abstract: A water cleaner is formed of a hollow casing having a water inlet and a water outlet. An elongated tubing is secured to the interior of the casing and contains an inlet and an outlet and means for coupling the tubing inlet to the water inlet and the tubing outlet to the water outlet. A screen surrounds the exterior of the tubing and is secured thereto. A filter element surrounds the screen for removing impurities from the water passing from the casing inlet to the casing outlet.

Abstract: This device consists primarily of a coupling sleeve for a sewer pipe, and on the interior of the coupling sleeve is supported a cup or well, and on the interior of the cup is supported, a funnel tube beneath a water strainer. The water flows through the strainer, down through the funnel tube, upwards out of the cup portion, and finally, down the open end of the coupling sleeve, into the sewer pipe.

Abstract: A wash filter for tapping and filtering a portion of fluid in a moving stream has a plug mounted coaxially in a conduit receiving the stream. The plug includes a bullet-shaped nose similar to that in a conventional wash filter for accelerating the fluid through an annular passageway adjacent the conduit wall, and a porous frusto-conical screen or mesh body portion downstream of the nose and through which a portion of the accelerated fluid is tapped and filtered. Suspended particles in the fluid are driven toward the conduit wall by the plug nose while an inwardly located portion of the accelerated fluid passes inwardly through the porous screen and then through a base of the plug into a separate outlet line arranged coaxially of the conduit.

Abstract: A sewage treatment and recycling system is disclosed wherein effluent is initially treated in a septic tank and then flows over a perforated splash pan to be distributed evenly over a removable filter. The filtered effluent then passes through a second filter and into a holding tank from where it is pumped to a water tank and chlorinated before being sprayed over the land surface or used for other purposes.