Abstract: High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve an overall filtration efficiency at 4 microns of 95% or higher and a ratio of filtration capacity to media caliper of 0.5 mg/in2/mils and greater. The filtration media is made by forming a wet laid sheet from a fibrous slurry blend of the synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, followed by drying the sheet to obtain the filtration media. Optionally, the filtration media may be provided with a resin binder and may be grooved and/or pleated.

Abstract: High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve a multipass dust holding capacity of 10 mg/in2 and greater, and a multipass filtration efficiency at 1.5 microns of greater than 50%. The filtration media is made by forming a wet laid sheet from a fibrous slurry blend of the synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, followed by drying the sheet to obtain the filtration media. Optionally, the filtration media may be provided with a resin binder and may be grooved and/or pleated.

Abstract: High efficiency and high capacity glass-free filtration media include a blend of synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, wherein the fibrillated cellulosic fibers are present in the media in an amount to achieve an overall filtration efficiency at 4 microns of 95% or higher and a ratio of filtration capacity to media caliper of 0.5 mg/in2/mils and greater. The filtration media is made by forming a wet laid sheet from a fibrous slurry blend of the synthetic non-fibrillated staple fibers and fibrillated cellulosic staple fibers, followed by drying the sheet to obtain the filtration media. Optionally, the filtration media may be provided with a resin binder and may be grooved and/or pleated.

Abstract: A filter element (2) for use in a disc filter (1), wherein a plurality of filter elements (2) are arranged on a rotor shaft (3) in a manner allowing liquid communication between the inside (4) of the filter elements (2) and the inside (5) of the rotor shaft (3), for the filtering of liquids. The filter element (2) includes a framework (6) carrying a filter cloth (7) on both its side surfaces (8), wherein the framework (6) and the filter cloth (7) are permanently joined forming a single use filter element (2) and the filter element has at least one passage (21) in each edge (22) for liquid communication between the inside (4) of adjacent filter elements. A disc filter (1) including a single use filter element (2) is also provided.

Abstract: An automatic strainer assembly for straining a slurry comprises an inlet for receiving the slurry, a horizontally disposed strainer body in fluid communication with the inlet, and a rotatable strainer member received within the body having an inner surface and an outer surface. One or more scrapers are positioned for removing material from the outer surface of the strainer assembly. A collection vessel is positioned substantially below the body for receiving material scraped from the outer surface of the strainer member. A transport member can be provided for returning the scraped material to the slurry supply for reprocessing thereof. An outlet expels the strained slurry. A manual or automatic washdown system is provided for removing the slurry from the strainer member. A radial bearing assembly and radial seal are associated with the drive shaft of the strainer member to prevent galling. A method for processing a slurry is provided.

Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.

Abstract: The automatic transmission fluid filter includes a plastic upper case having an outlet port, a plastic lower case having an inlet port , and a filter element including a filter medium and a plastic holder frame holding the periphery of the filter medium and held between the upper case and lower case, at least one of the upper case and lower case including a pair of joint portions respectively joined to opposite walls a of the holder frame, and a connecting wall connecting the pair of joint portions and having a circular arc longitudinal cross section protruding outward of one case.

Abstract: A method and apparatus for obtaining various components of a multi-component material. Generally, a component of a whole blood sample may be concentrated from a patient and re-introduced to the same patient. For example, a clotting component, such as thrombin, from a whole blood sample may be extracted and concentrated in an apparatus and collection to be reapplied or reintroduced into a patient.

Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.

Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.

Abstract: A solid-liquid mixture is electro-dewatered by apparatus having a conveyor belt for receiving an electric charge and having the mixture deposited thereon and an element above the conveyor belt receiving an opposite electric charge with the conveyor belt an element cooperating to apply a compressive force to the mixture and characterised by the conveyor belt including discrete electrically conducted segments which are permeable to the liquid. The upper element is preferably in the form of a rotary drum or second conveyor belt but it can be in the form of a pressure plate.

Abstract: A device for cleaning large quantities of water (3) of rakings at overflow edges (2), especially from rain water reservoirs, rivers, etc., with a stationary separation area (10), which is formed as a section of a cylinder jacket (7) with an axis (8) parallel to the overflow edge, through which the quantity of water flows is provided. A takeover device (11), which is driven about an axis (8) of the cylinder jacket (7), is assigned to the separation area (10) for removing the rakings separated at the separation area (10).

Abstract: A sand filter for use in a well is provided employing a length of perforated tubing. A tubular wedge wire screen is telescopically positioned on the tubing covering the perforations. A plurality of tubular corrugated filter elements are then positioned on the wedge wire screen in end-to-end relationship. Each of the filter elements is formed of diffusion bonded multiple layers of wire mesh and each of the filter elements is corrugated to provide an external surface having an area at least three times the area of the cylindrical external surface of the tubular wedge wire screen that is encompassed by each filter element. The corrugated filter elements are secured on the wedge wire screen and welded in abutted end-to-end position.

Abstract: A screen assembly for use with a solids-liquid separation screen device that allows for simply replacement or adjustment of the screen assembly. The screen assembly includes an arcuately shaped screen held between pair of side panels. When installed, the screen assembly rest on a ledge formed on the inner walls of the solids-liquid separation device housing. The screen assembly is then securely held in position by a pair of clamps at the top of the screen and by a pair of springs at a lower rear portion of the screen.

Abstract: Compressible material is compacted into a plug by a device including a housing, solid outer wall, and restricting adjustable portion at an outlet. A root wall is rotated about an axis and conveys the material to be compressed in a channel having solid sidewalls. Without significant extraction of liquid from the material, the material is compressed until discharged in a compacted plug form from the housing outlet. A pneumatic cylinder provides an adjustable force for effecting the compaction adjacent the housing outlet. Examples of compressible materials that may be acted upon in the practice of various industrial processes include wood chips, high consistency paper pulp (cellulose pulp), wax and fibrous waste (for making artificial fireplace logs), and mud and straw (for producing building blocks or bricks).

Abstract: The device comprises a closed chamber (1) equipped with an inlet pipe (3) for the aerated liquid, an outlet pipe (4) for the deaerated liquid, and an air evacuation pipe (5); and a rotor having a shaft extending into the chamber. The shaft carries means (7) for centrifugation of the liquid and means (8,9,10) for intensive agitation of the centrifuged liquid.The device works according to the following process: continuously, the liquid is introduced into the closed chamber and it is vigorously centrifuged there in with the aid of mechanical means (7) and simultaneously subjected to intensive agitation with the aid of second mechanical means (8,9,10).The released air gathers freely at the center of the chamber whence it is evacuated, as the deaereated liquid is evacuated through the outlet pipe.

Abstract: Aqueous slurries of particulate materials, particularly wood pulp slurries produced during the recycling of newsprint and other paper products, are processed to recover an accepts fraction in a rotary filter having a hollow cylindrical rotor. The rotor is modified to prevent plugging by outwardly tapering the inner wall of the rotor from its upstream towards a downstream end, so as to cause heavy particles tending to accumulate on the wall to flow towards the downstream end and not accumulate. At the downstream end, vane-like hub supports are provided angularly offset from the axis of the rotor to impart motion to the slurry passing through the rotor to assist in circulation of the slurry within the filter housing.

Abstract: A drum filter is disclosed in which a filter media layer is applied over a section of a drum member disposed in a tank which receives a liquid to be filtered, the filter media layer constructed of a thin metal with a pattern of holes formed by chemical etching, with the diameters thereof increasing in the direction of flow. The diverging hole shape reduces the tendency for plugging of the hole. One or more scraper blades are urged against the filter media layer which is rotated past the scraper blade causing a flexing of each section of the filter media layer to unplug any holes which do become clogged.

Abstract: A reverse osmosis water purification module has an enclosed cylindrical housing in which at least twelve purification elements are mounted in a uniform, spaced parallel fashion. Each element consists of a long flat member having a thermoplastic sheet backing formed into a slightly curved cross section and having a semi-permeable membrane disposed thereon. The backing has three-dimensional porosity for purified water such that water passing through the membrane portion of the element travels along the backing member to an end. The ends of the module are mounted in a collection manifold which is sealed off from the remainder of the housing interior. A method of manufacturing the elements continuously is also provided wherein a continuous length of flexible backing material is fed sequentially through a heater, a forming die to impart a curved cross-section to the backing material, an extruder wherein membrane forming fluid is extruded around the periphery of the backing, a chill bath and a heating bath.

Abstract: The inner assembly of a tube pressure filter comprises a supporting member or core (6) on which there is a facing assembled from laths (40). Each two adjacent laths (40) define between themselves a duct (42) and an aperture (44). In use, a filter element is provided on the outer surface of the facing. Filtrate passing through the filter element goes through the apertures (44) into the ducts (42) and then flow longitudinally of the inner assembly to a filtrate outlet. After filtration is complete, compressed air may be passed through the ducts (42) and apertures (44) to assist the discharge of filter cake from the filter element.In another embodiment (FIG. 6), a filter plate unit for a plate filter press comprises a recessed filter plate (102) of which the base of the recess is provided with a facing (112) made up, for example, of a plurality of laths (114).

Abstract: The disclosure sets forth blood processing apparatus of the general type which employs a cylindrical rotor with a semi-permeable membrane at its outer surface, rotatable within a surrounding stationary casing or housing, blood being supplied and discharged at angularly spaced loci of the casing, a secondary fluid being supplied to the interior of the rotor, effecting a cross-transfer of a component in the blood, and a secondary fluid, or a component thereof, across the membrane, sometimes referred to as a "journal machine" to distinguish such type from others which differ basically therefrom. The basic environment is like that of certain patents, identified hereinafter, and incorporates, by reference, features thereof insofar as they are applicable to the present disclosure.

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 multi-layer filter material assembly. The assembly includes a filter medium which consists of a single sheet formed of fibers of a glass having a low coefficient of thermal expansion. The filter medium is supported on each side by at least one sheet of bonded synthetic fibers and a sheet of metallic wire mesh. The two sheets of metallic wire mesh form the two outermost layers and the entire assembly is formed into a pleated configuration.

Abstract: An automatic self-cleaning liquid clarification system wherein suspended solids are removed from a contaminated liquid. A hollow drum carrying a plurality of brushing elements mounted on its outer periphery scrubs a strainer or screen and elevates the solid contaminants separated by the screen into a pitched auger conveyor which removes additional liquid from the solids materials which are then conveyed in a semi-dry or damp state for discharge.

Abstract: An apparatus for extracting components of solids, by means of a liquid contacting the solids in counter-current flow, comprises a rotating drum with a substantially horizontal axis, which drum has generally axial compartments extending from one end to the other. The materials to be extracted and the liquid are supplied to opposite ends of the compartments. The compartments have along a cross-section at right angle to the drum axis in the general shape of a circle sector the apex of which merges with the drum axis. At least those walls of the compartments extending generally radially are pervious to the liquid and the liquid level inside the drum is lower than the drum axis level.

Abstract: A process for liquid-liquid counterflow extraction based on the mixer-separator principle is disclosed. A dispersion of two liquid phases is fed to a separator and the clear phases are withdrawn therefrom. The dispersions to be separated are fed to the separator in two partial steams equal in rate of flow and flow through the separator in mutually opposite directions along respective paths each having a length equal to one-half of the diameter of the separator. Apparatus for carrying out the process includes inlets for the dispersion to be separated positioned at two opposite points of the periphery of the separator and outlets for the separated clear phases lying on the intervening diametral chord. The outlets and inlets can be reversed.