Abstract: A stormwater treatment device includes a tank defining an internal volume and having an inlet and an outlet, a rotatable screen unit mounted within the tank, the rotatable screen unit being barrel-shaped to define a through path with an inlet end and an outlet end. The rotatable screen unit includes a screen structure with a plurality of screening openings for allowing passage of at least some water from the through path outwardly through the screen structure while inhibiting passage of trash items through the screen structure such that trash items move along the through path from the inlet end to the outlet end. The rotatable screen unit includes a plurality of external drive paddles that rotate with the screen structure and that interact with water that has been screened by passing outwardly through the screen structure interacts with the external drive paddles to cause rotation of the rotatable screen unit.

Abstract: In a water treatment system, which may be a wastewater treatment plant, a single-inlet drum screen is installed with its rotation axis perpendicular to the pattern of flow in a channel. Retrofitting of an existing screening system with a different form of screen, residing in an existing concrete channel is described.

Abstract: A device for dewatering sewage sludge and a method for its use is provided. The device affords separation by causing a sludge concentrate to flow at sufficiently slow rates to cause the gel-like concentrate to fracture and release trapped water. Sewage sludge dewatered according to the method and utilizing the device can be directly burned or directly introduced into a landfill. Certain embodiments of the device can be transported to a site where the dewatering process is carried out and certain embodiments of the device can be further utilized to transport dewatered sludge from the dewatering site to a further disposal site.

Abstract: Method and apparatus for reducing the thickness of a precoat-layer accumulated on the filtering surface of a filter disc from a solids-containing suspension in a basin of a disc filter, said disc filter having two or more filter discs arranged on a shaft and between them at least one drop chute provided with a scraper on both sides, which scraper scrapes the cake filtered from the suspension on the filtering surfaces of the filter discs into the drop, the layer thickness of the precoat on the filtering surface is reduced by shortening the distance between the tips of the scrapers and the filtering surface, and the precoat thickness reduction is accomplished for the precoats on the filtering surface of the two filter discs on both sides of the drop chute non-simultaneously.

Abstract: A method and apparatus for separating liquid from food product includes a rotable drum mounted in a frame. The ends of the drum are comprised of rigid structural material, and each includes a sealing band. An inlet at the first end receives food product and liquid. Food product solids, with less water than received, are discharged from an outlet at the second end. One or more helical flights extend between the ends. The flights have an outer edge, and a flexible mesh screen is wrapped about and intermittently supported by the outer edge. The ends of the screen are held in the sealing bands, and the longitudinal edges of the screen are held by a seal extending between the sealing bands. Liquid can pass through the screen and food product is retained in the drum by the screen, and moved to the outlet by the flights.

Abstract: An apparatus for filtering a material from a medium includes a first housing having a wall with a plurality of openings formed therein, a conveyor disposed in the housing for moving the material therealong, and a conduit line communicating with the interior of the housing for supplying the medium to the apparatus. At least one of the first housing and the conveyor rotate relative to a central axis to direct the medium toward the wall so as to separate the material from the medium. A method for filtering a material from a medium includes supplying the medium to a first housing, spinning the medium within the housing, passing the medium through a wall of the housing to separate the material from the medium, moving the material along the housing, introducing a fluid into the material within the housing, and washing the material using the fluid.

Abstract: A pumped or gravity flow rotating drum screen removes unwanted solids from a flowing fluid. The drum screen may comprise: a housing having a fluid inlet end, a solid discharge end and an area between the two ends, the fluid inlet permitting a flow of influent containing unwanted solids into a hollow portion of a drum screen positioned lengthwise in the area between the two ends of the housing, the screen comprising a filter medium that retains at least a portion of the unwanted solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen, the retained solids being removable via the solid discharge end; a drive assembly configured to rotate the drum screen about an axis running the length of the drum screen; and one or more stabilization pad assemblies in contact with one or more rings circumscribing the outer surface of the drum screen at one or more locations.

Abstract: The present invention relates to a washing apparatus for washing of cellulose pulp comprising: a rotatable drum (2), a stationary support (14), a stationary cylindrical casing (18), that encloses the drum, whereby an annular space (20) is defined between the casing and the drum, a number of seals (22) that are arranged on the casing and that seals between the casing and the drum, such that the annular space is divided in a formation zone (F), at least one washing zone (T1, T2), and a discharge zone (U), and at least a reinforcing frame rib (24), that is attached to the casing. The reinforcing frame rib (24) extends around the entire casing (18) for fixing the casing in a predetermined form, whereby detrimental deformation of the casing (18), when washing the paper pulp at overpressure, is prevented.

Abstract: The present invention relates to separating one or more of sand and other particulate matter from a mixture of animal waste and water. The present invention can help to control the discharge of noxious odors while processing material containing animal waste. An exemplary apparatus in accordance with the present invention includes a cylindrical housing and a non-rotating collection table. An exemplary apparatus in accordance with the present invention includes optional shield provided inside the cylindrical housing that can help to capture the particulate matter and that can also help to reduce the discharge of noxious gas and odors from the apparatus.

Abstract: The filter apparatus for an incoming liquid which includes a retentate and a permeate includes a housing with a frame and a hollow drum assembly mounted for rotation within the housing. An inlet assembly delivers the incoming liquid under pressure to the drum assembly. A filter assembly is mounted to the inside of the drum. A trough assembly is mounted so as to be in a fluid-tight relationship to the interior surface of the filter assembly as the drum rotates past the trough assembly. A manifold is fixedly mounted and configured to cover successive columns of openings of the drum wall as the drum rotates. Pressurized gas is directed to the manifold, so that as the drum turns, and retentate is collected on the interior surface of the filter, pressurized fluid from the manifold dislodges the retentate into the trough and out an outlet assembly.

Abstract: A waste separator apparatus is provided. The apparatus includes a first screen assembly for screening fluids from a waste stream where the first screen assembly defining an enclosure. A second screen assembly is provided for screening fluids from the waste stream and is disposed closely spaced-apart within the enclosure of the first screen assembly. A waste stream pathway is defined between the first screen assembly and the second screen assembly. A first separated fluids stream pathway is defined outwardly of the first screen assembly. A second separated fluids stream pathway is defined inwardly of the second screen assembly. One or more blades extends inwardly from the first screen assembly or outwardly from the second screen assembly for advancing the waste stream through the waste stream pathway. A related system is also provided.

Abstract: The present invention relates to separating one or more of sand and other particulate matter from a mixture of animal waste and water. The present invention can help to control the discharge of noxious odors while processing material containing animal waste. An exemplary apparatus in accordance with the present invention includes a cylindrical housing and a non-rotating collection table. An exemplary apparatus in accordance with the present invention includes optional shield provided inside the cylindrical housing that can help to capture the particulate matter and that can also help to reduce the discharge of noxious gas and odors from the apparatus.

Abstract: A liquid separating drum (1) for use with a separator (3) in order to separate liquid material (11a) from solid material (11b) in a mixture material (11) to be processed. The liquid separating drum (1) includes an elongated main body (5) having a longitudinal axis (7), the main body (5) being removably mountable about a base frame (9) of the separator (3) so as to be rotatable with respect thereto, the main body (5) having an inlet (5a) for receiving the mixture material (11) to be processed, and an outlet (5b) for releasing processed material.

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 self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage an outer surface of the annular ring to support the drum for rotation about a horizontal axis.

Abstract: A rotatable separator drum includes a vertical rotating axis of rotation and at least one flow channel having an inlet opening and an outlet opening. Also included is at least one retaining dam arranged in the at least one flow channel in a region between the inlet opening and the outlet opening.

Abstract: A filtration system for collecting bone fragments during surgery performed on a patient includes a cylinder having a rotating disk with circumferential arms extending radially in the cylinder to define pockets. The rotating disk includes a longitudinal hub that carries an outlet connected to a central passageway formed in the disk. A plurality of apertures on the disk permit the liquid to flow into the passageway and through the outlet while the pockets retain the bone fragments. The disk is rotated to align circumferential spaced pockets to align with the inlet and outlet ports. The disks includes bearing surfaces that permit the rotation thereof and the arms are spaced from the cylinder inner surface to allow the flow of fluid in the event the pockets fill and clog the apertures and prevent flow into the outlet passage.

Abstract: A dewatering structure includes a receptacle body, a dewatering unit and an operation apparatus. The receptacle body includes a receptacle tub and an assembling space, in which the receptacle tub and the assembling space are independent from each other. The operation apparatus includes an operation unit and a base. The operation unit includes an active pedal and a driven pedal, which are pivotally coupled to the base and are intersected with each other. The driven pedal includes a free end slidably coupled with a driving block having a threaded through hole. The threaded through hole is provided for connection with a threaded rod sheathed in a spring member. When the active pedal and the driven pedal are repetitively pressed each other and then released, the dewatering unit is driven to rotate, thus producing a centrifugal force for removing the water from the water-contained object.

Abstract: A self-cleaning screen for shallow water pumping includes a rotatable drum made of mesh material for removing debris from water passing into the drum, and a suction chamber within the drum for feeding water to a suction pipe connected to a centrifugal pump. Inlet openings are arranged across a bottom side of the suction chamber. A check valve assembly is provided to prevent water from back flowing through the inlet openings, to thereby maintain a prime in the suction pipe when the pump is off. The check valve assembly includes valve members that are slidably mounted above the inlet openings for movement between closed and open positions. The valve members move upwardly from their closed positions to their open positions upon movement of water through the inlet openings into the suction chamber, and return to their closed positions by force of gravity when water stops flowing into the suction chamber.

Abstract: A system and method for excavating a subterranean formation, according to which a slurry of liquid and a plurality of impactors are introduced into at least one cavity formed in a body member and are discharged from the cavity so that the impactors remove a portion of the formation. The impactors are separated from at least a portion of the fluid and the materials removed from the formation, so that the impactors can be reused.

Abstract: An apparatus serves for removing fine material to be screened from waste water. The apparatus includes a sieve grate (6) and a detaching device (16). The sieve grate (6) is cylindrical, and it is rotatingly driven. The sieve grate (6) allows for waste water to flow from its interior towards its exterior. The sieve grate (6) includes a supporting body (13) and a mesh sieve (7). The supporting body (13) is located at the exterior of the sieve grate (6). The supporting body (13) is made of a perforated sheet metal including comparatively large openings (37). The supporting body (13) provides for resistance and stability of the sieve grate (6). The mesh sieve (7) is located in the interior of the sieve grate (6). The mesh sieve (7) forms a separation surface (14) for the material to be screened. The mesh sieve (7) includes meshes of a comparatively small size. The mesh sieve (7) is fixedly connected to the supporting body (13). The detaching device (16) is arranged outside of the sieve grate (6).

Abstract: The filter apparatus for an incoming liquid which includes a retentate and a permeate includes a housing with a frame and a hollow drum assembly mounted for rotation within the housing about a fixed central cylinder. The drum assembly has openings in the drum wall. An inlet assembly delivers the incoming liquid under pressure to the drum assembly. A filter assembly is mounted to the inside of the drum. A trough assembly is mounted so as to be in communication with the central cylinder and is in a fluid-tight relationship to the interior surface of the filter assembly as the drum rotates past the trough assembly. A manifold is fixedly mounted but has a substantially fluid-tight relationship with the exterior of the drum, and is configured to cover successive columns of drum openings as the drum rotates.

Abstract: A drum filter assembly comprising a hollow drum filter having a longitudinal axis and an outer filter screen or mesh material, the drum filter being supported on external rollers for rotation about its longitudinal axis and an inlet for introducing liquid to be filtered into the interior of the drum filter. Rotation of the drum filter is effected by the liquid flowing into the drum filter. Alternatively, the drum filter may be driven by an external motor.

Abstract: An apparatus for removing material from a liquid flowing through a channel includes a sieve grate, a screw conveyor and a detaching device. The sieve grate has an inflow side, an inner side and an outer side. The sieve grate is designed to be cylindrical and to be rotatably driven. The sieve grate is arranged at an inclined orientation to be partially submerged in the liquid. The sieve grate at the inflow side includes an open face. The sieve grate at the inner side includes a plurality of guide plates. The sieve grate includes a shaping carrier element. The sieve grate includes a mesh fabric, the mesh fabric being designed and arranged to form a separation surface for the material. The screw conveyor includes a housing. The screw conveyor includes a driven conveying screw. The screw conveyor is coaxially arranged with respect to the sieve grate.

Abstract: A drum type paper stock refine screen is provided which is capable of efficiently filtering a refined paper stock to the outside of a laterally suspended rotary drum and efficiently discharging foreign matter to the outside of the drum while rotating the drum. The drum type paper stock refine screen includes a lower water infiltration zone formed by infiltrating a lower circular part on one end side of a laterally suspended rotary drum in a water tank, a non-water infiltration zone continuous with the lower water infiltration zone on the other end side of the rotary drum, and a paper stock injection port for injecting a paper stock in the lower water infiltration zone.

Abstract: A filtering system used on a meat injection machine that injects pickling into meat products. The filter consists of a tank and a first and second rotary filter. The first rotary filter uses a wedge wire wound cylinder and augers having flutes that rotate to catch and push away solid particles toward the second filter. The second filter then uses more wedge wire in a whirlpool effect to ensure all solid materials and foam are in the outside of the filter. Injector fluid is then taken from the center of the inside volume of the second filter to be used in injection needles.

Abstract: A filtering system used on a meat injection machine that injects pickling into meat products. The filter consists of a tank and a first and second rotary filter. The first rotary filter uses a wedge wire wound cylinder and augers having flutes that rotate to catch and push away solid particles toward the second filter. The second filter then uses more wedge wire in a whirlpool effect to ensure all solid materials and foam are in the outside of the filter. Injector fluid is then taken from the center of the inside volume of the second filter to be used in injection needles.

Abstract: The present invention provides a drum type refining or washing apparatus in which the refining or washing efficiency of a pulp suspension or a food suspension is remarkably enhanced by the filtration function of a rotary drum and by the filtrate sucking force of a filtrate receptive cell.

Abstract: A method for washing a fibre suspension with washing liquid, in which, in accordance with the invention, the fibre suspension is introduced into an annular treatment channel (24) that has an inlet end (72) and an outlet end (73) and is concentric with an axis of rotation (5) to form an inner annular layer (74), washing liquid simultaneously being introduced into the treatment channel to form an outer layer (75), which surrounds the inner annular layer. The fibre suspension and washing liquid are caused to rotate in the treatment channel whilst moving from said inlet end to said outlet end, fibres in the fibre suspension being caused to move into the outer layer of washing liquid, under the influence of the centripetal force, so that an accept (29), the liquid phase of which completely or mostly consists of washing liquid, is discharged at the outlet end of the treatment channel.

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cilinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within the tumbler cilinder to raise moistured solids, wherein said water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cilinder and raised by the blades which comprises a separator to separate the remaining water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cilinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cilinder is mounted to, and which said collecting and recycling hopper collects and recycles the wastewater to the tu

Abstract: In a screw press, an outer tube (5), over which a screen (4) is tensioned, is divided into a freely rotatable condensing zone at the front half thereof, and a filtering and dewatering zone at the rear half thereof, a freely rotatable screw shaft (7) is provided within the thus-divided outer tube (5a, 5b), filtered fluid is separated from sludge supplied to the starting end of the condensing zone by the screen (4) of the outer tube (5a), and a cake is removed at a discharge port (29) at the rear end of the outer tube (5b) of the filtering and dewatering zone. A sludge supply path (28) is provided in the screw shaft (7), a supply hole (28a) of this supply path (28) is formed at the starting end of the outer tube (5a) of the condensing zone, and a scraper (33) extends on the outer periphery of a screw vane (6) from the starting end to the ending end.

Abstract: Apparatus for cleaning a filter cloth in a filtering device with a rotatable drum having an inlet for the liquid to be filtered. The drum has in its circumferential surface openings through which the liquid to be filtered is conducted in a filtering direction out of the drum for filtering through a filter cloth. The cleaning apparatus includes at least one spray nozzle which is adapted to spray cleaning liquid onto a portion of the filter cloth in a direction opposite to the filtering direction. Moreover the apparatus comprises a driving device for providing a reciprocating motion of the spray nozzle. The driving device has a coupling which is adapted to transform the rotary motion of the drum into the reciprocating motion of the spray nozzle, with such a ratio that the rotary motion of the drum and the reciprocating motion of the spray nozzle are out of phase with each other.

Abstract: A pulp screening assembly where each support ring is weldlessly bonded to a perforate screen section by a bonding material that preferably is a brazing material. There is a joint between each ring and a screen section in which brazing material is disposed. The joint includes at least one set of mating faying surfaces that are offset relative to a longitudinal axis of the screening assembly. In a preferred embodiment, there is a tolerance between mated faying surfaces of no greater than 0.008 inches to ensure a good weldless bond is achieved. In another preferred embodiment, the tolerance is no greater than 0.004 inches. A weldless screen basket is produced having end rings, a plurality of slotted screen sections, and an intermediate ring having slots with back grooves within four millimeters of a ring at each end increasing screening open area.

Abstract: An apparatus for cleaning a rotating cylindrical wastewater screen of the type formed of tubular perforate wedgewire.

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cylinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within te tumbler cylinder to raise moistured solids, wherein said waste water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cylinder and raised by the blades which comprises a separator to separate the remaining waste water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cylinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cylinder is mounted to, and which said collecting and recycling hopper collects and recycles the waste wat

Abstract: A fine solids separator 10 including a hollow housing 12 having a generally cylindrical wall 11. Located within the housing 12 is a cylindrical screen member 15 that is preferably formed of expanded metal mesh. The screen member 15 encloses a chamber 22 to which a flocculated sewage is delivered by means of an inlet duct 23. Located within the chamber 22 is an impeller 26 which at least aids circulation of liquid within the chamber 22 about the longitudinal axis of the chamber 22. Liquid leaves the chamber 22 via the screen member 15 and an outlet 25 extending from an outlet chamber 24 located between the member 15 and housing 12.

Abstract: An arrangement comprising a filter cylinder (1) composed of an approximately horizontally extending alternately superposed array of fixed plates (8) having circular or approximately circular openings, and annular floating plates (9) having geometrically similar openings (13) slightly larger in diameter than the openings in the fixed plates and also having circular outer peripheries, with small filtration clearances defined, the row of openings in the fixed plates defining a cylindrical space having a fixed inner peripheral contour (3), it being arranged that when the row of openings in the floating plates is positioned outside the cylindrical space, at least two equi-level regions in the lower portion of the outer periphery of the floating plate are exposed beyond the outer edge of the fixed plate, a screw (2) extending through the cylindrical space, and eccentric shafts (12) contact-wise supporting the exposed outer peripheral portions of the floating plates and eccentrically rotated, so as to swing the floa

Abstract: A screen plate (1) for screening of pulp suspensions, comprises a number of elongated at least partially curved screen slots (3). According to the invention every screen slot has a width which is maximally 0.8 mm, and the screen slots bend in such a way that a straight rod, which has a breadth which is less than the width of the screen slot and the length which is 5 mm, is prevented from passing through the screen slot, when the rod extends along the screen plate, independently of how this rod is oriented in relation to the screen slot. At that elongated stiff shives may be separated more efficiently by means of the screen plate. This screen plate may also be used for separating a pulp suspension into a first fraction comprising comparatively stiff fibers and a second fraction comprising comparatively flexible fibers.

Abstract: A strainer with a screen at its outer periphery is rotatably supported on a casing. A hollow pipe with paddles on an outer periphery of the pipe is fitted in the strainer. The hollow pipe is rotated at a rotating velocity different from that of the strainer. Slurry introduced into the hollow pipe is discharged through slurry outlets on the hollow pipe into inside of the strainer. Then, the slurry is hydrated by the screen under centrifugal action and is moved by the paddles toward a slurry outlet.

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

Abstract: A filter cloth comprising at least a base layer and a filtering layer, characterized in that the ratio T/L of the thickness (T) of the filtering layer to the length (L) of fibers of fiber bundles constituting the filtering layer is 0.02 to 0.7 and the sum of a projected area of the fibers onto the base layer surface is 8 to 350 times the area of the base layer surface and, a filter cloth characterized in being constituted with at least a base layer and a filtering layer mainly composed of fiber bundles of crimped fiber ratio over 5%.

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

Abstract: A reciprocating power sprayer for cleaning a rotating cylindrical wastewater screen of the type formed of tubular perforate wedgewire. The spray is reciprocated on an elongated pneumatic cylinder which is arranged in parallelism along the cylinder wastewater screen. Controls are provided for automatically controlling the reciprocation of the spray.

Abstract: The invention provides an apparatus for screening a fibrous slurry including a rotatable drum whose circumferential wall includes a screen. The screen has spaced openings with longitudinal axes or elongations which are large relative to the transverse axes or gaps defined by the openings. The openings are disposed with their longitudinal axes extending circumferentially of the rotatable drum. The drum has at least one open end. A slurry delivery conveyor terminates adjacent to the drum for delivery of slurry within the drum.

Abstract: The invention relates to a device for treatment of drilling mud and cuttings, comprising a screen, a centrifuge (10), a degassing system (6), a discharge system directing the drilling mud back to the active drilling mud system (13, 14), a transport system (17) transporting the cuttings. The screen is a rotating drum (3), and the drum is situated in a mainly enclosed housing (1) with the housing being connected to a vacuum suction system. The solid material discharge from the rotating drum (3) is connected to a downstream centrifuge (10), by a mainly enclosed pipe system (9). A weighing cell (16) for cuttings is connected to the centrifuge (10).

Abstract: A filtering device includes a screen including support rods extending in the axial direction of the screen and arranged generally cylindrically with a predetermined interval, and a cylindrical filter member attached fixedly on the outside of the support rods, a vibrator including a shaft provided in the central portion of the screen coaxially with the screen and at least one leaf spring which is fixed in one end portion thereof to the shaft and is capable of abutting in the other end portion against a part of each of the support rods, and a drive unit for rotating at least one of the screen and the vibrator.

Abstract: An apparatus for filtering liquids comprises a hollow body which is rotatable about a horizontal axis. Liquid to be filtered is supplied into the interior of the rotating hollow body so that filtrate flows by gravity through filter material of the hollow body into a filtrate container. A sealing structure seals between a stationary circumferential wall, which defines a liquid supplying chamber, and a circumferential liquid impervious wall of the hollow body. Wall structures are arranged to prevent unfiltered liquid leaking past the sealing structure from entering the filtrate container.

Abstract: A screen cylinder, screen, method of manufacture of the screen cylinder, and method of use of the screen cylinder, allow screen capacity to be maximized without sacrificing screen cylinder strength, and while achieving a clean accepts flow. A screen cylinder is constructed in a conventional manner except that at least one reinforcing ring is permanently fastened (typically by continuous or spot laser or electric beam welding, or direct resistance welding) to at least a majority of (and typically essentially all of) the land areas which separate grooves in a row from each other, at the outlet surface of the cylinder, or at least one spiral ring is applied. In this way effective slot length of screen cylinders may be about 65-90% of the total screen length, compared to only about 45-55% for conventional screen cylinders. The screen cylinders are particularly effective in screening cellulose pulps from the pulp and paper industry.

Abstract: A filtration unit for the separation of substances from liquids utilizes a rotatable cylindrical module with a permeable wall disposed within a housing. A filter element which has at least one band of microporous membrane adsorber having a specific adsorption affinity for the substances to be separated is disposed within the cylindrical module so that the membrane absorber is abutted to the cylindrical module. The filter element encircles the feed inlet and can be in the form of an endless loop. A permeate plenum lies between the cylindrical module and the housing. The cylindrical module includes a liquid impermeable end cap which is provided with a coupling member adapted for connection to a drive of variable rotational speed.

Abstract: A filtering device provided a horizontal drum in which a filter layer made of granular filter material and a space portion are formed in a vertical direction within its interior; a crude water introducing/dirty water discharging first water flow pipe which passes through an axial portion of the horizontal drum from the outside of the horizontal drum and whose a crude water introducing/dirty water discharging first water flow portion is located in the space portion; and a filtered water introducing/washing water discharging second water flow pipe which passes through an axial portion of the horizontal drum from the outside of the horizontal drum and whose a filtered water introducing/washing water discharging second water flow portion is located in an interior of the filter layer.