Abstract: A self-cleaning strainer which may be installed upstream of a heat exchanger to prevent debris greater than a critical size from reaching the heat exchanger. The strainer is preferably mounted just upstream of a heat exchanger in order to minimize the possibility of debris reaching the heat exchanger. The strainer comprises a screen element which can be advanced across the flow path of the fluid between two rollers. The screen element is placed so that the fluid must flow across the screen element face to continue through the process pipe; the screen may be perpendicular or parallel to the fluid flow axis of the strainer body or at an intermediate angle to it. Flow blocking members are used so as to direct the flow to pass through the screen element.

Abstract: The invention relates to a sieving device for mechanically separating and extracting solid bodies or solid matter from a liquid current, in particular, to sieve gratings for process or effluent currents or for use in sewage treatment plants or hydroelectric power stations. Said device comprises a number of sieving panels (2, 2′, 2″) which are substantially arranged in a transverse direction to the direction of flow of the liquid current, are linked together, and which form a revolving endless sieve belt (1) immersing into the liquid current (20). The device also comprises a drive for the endless sieve belt (1), whereby the sieving panels (2, 2′, 2″) are arranged successively in such a way that the revolving motion of the endless sieve belt (1) is comprised within one single plane which lies substantially perpendicular to the direction of flow of the liquid current (20).

Abstract: A filter screen that is used in filtering water and that includes a frame and a grid assembly that is supported by the frame for movement. The grid assembly includes a continuous unbroken drive chain having a guide link, and a screen panel. The screen panel is coupled to the guide link for selective movement between an operating condition and a maintenance condition. When the screen panel is in the operating condition the screen panel is fixed relative to the guide link for movement with the guide link and for filtering water. In the maintenance condition, the screen panel is pivotable relative to the guide link to permit access to the interior of the filter screen for inspection of chain components.

Abstract: A separator system for separating first material from second material, in one aspect for separating gumbo from drilling fluid, a combination of the first material and second material introducible to the separator system, the separator system having a screen conveyor having a plurality of spaced-apart rods or shafts, a plurality of wires, for each pair of adjacent rods or shafts of the plurality of spaced-apart rods or shafts a wire of the plurality of wires wrapped partially, once, or more around the rods of the pairs of spaced-apart rods, and portions of the rods and portions of the wires defining openings through which the first material is passable and through which the second material is not passable so that the screen conveyor separates the first material from the second material.

Abstract: A twin-wire belt press for dewatering of a fibre suspension and forming of a continuous web thereof comprises two dewatering tables (11, 12) forming a wedge-shaped pressure space (13) between the wire belts (5, 6) for initially pressing and dewatering the fibre suspension, whereby a web is formed between the wire belts. A roll arrangement (14) is situated after the dewatering tables, as seen in the direction of movement of the wire belts, for finally pressing and dewatering the web between the wire belts. The roll arrangement comprises at least on perforated hole roll (15) pressing against the wire belts. As a result, white-water that the hole roll presses out of the web between the wire belts is drained at least in part through the hole roll without rewetting the web.

Abstract: A filtering device for separating liquid and solid material from a mixture consists of an endless filter belt. Filtrate is separated off by means of the pressure difference above and below the filter belt. The device is placed in a high pressure space in order to keep liquid substances which at ambient temperature and atmospheric pressure would become gaseous. The applied pressures can rise to roughly 20 bar.

Abstract: A water treatment unit having: (a) a cooling tower; (b) a source of cooling water; (c) a main flow pipe for receiving the cooling water; (d) a source of fresh water connected to the source of cooling water; (e) a heat exchanger for heating the cooling water to form heated water; (f) a branched flow pipe for separating the heated water into a main stream of heated water and a partial stream of heated water; (g) a non-backwashable filter capable of separating waste contained in the partial stream of heated water into a compact waste residue and a first filtrate, in the absence of backwashing; and (h) a return pipe for transporting the main filtrate back to the cooling tower, wherein the cooling water is introduced through the main flow pipe into the heat exchanger where it is heated, after which it is split into a main stream of heated water and a partial stream of heated water, the main stream of heated water being transported back to the cooling tower, with the partial stream being transported, by way of the

Abstract: A waste water filter screen assembly that has a substantially open foot section to promote more efficient flow through. The rotating grid is generally free hanging. The present invention further provides a drive assembly with square, high friction drive drums mounted on the drive shaft. The present invention further provides idler roller assemblies mounted for guiding the rotating grid adjacent the filter screen assembly head. The open foot section, drive assembly and idler roller assembly are useable with filter grids of both the link element type and the panel type.

Abstract: The present invention concerns a method and an apparatus for separating dry matter from liquid, comprising providing an enclosed separation environment capable of being pressure regulated, and in said enclosed separation environment contacting at least one filter with a suspension accumulating dry matter on the at least one filter and passing the at least one filter through at least one set of rollers, whereby liquid is removed from the at least one filter, followed by removing the substantially dry filter cake from the at least one filter, wherein the above is performed in the same enclosed separation environment either under vacuum or overpressure.

Abstract: A liquid filter method includes use of a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via an inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air. A hose seal for the cover is mounted to the filter belt to be moved in and out by the belt movement, allowing cleaning of the seal. A double loop hose seal creates an intervening space into which liquid is directed to minimize air leaks.

Abstract: A fluid reclamation system is provided for separating large debris particles from a polluted fluid. The reclamation system includes a separation device with an endless screen installed onto driven cylinders. A basin is mounted within the screen for collecting the fluid after it passes through a top surface of the screen. A disposal mechanism discards large debris particles from the screen and discharges the large debris particles into a storage barrel.

Abstract: The present invention is a screening/washing/dewatering system which utilizes a solids handling pump to vacuum solids captured from a contaminated fluid stream from the system's screening mechanism and to convey them, in a concentrated form and through a closed conduit, to the washing/dewatering mechanism. The use of a solids handling pump enables a screening, washing and dewatering system to contain the captured solids in a completely closed system from their point of capture, through a conveyance system of unlimited length and configuration, to the point that the washed, dewatered screenings are finally discharged. Secondarily, the present invention offers the advantages of being able to capture as small of a solids particle size as is desirable and of providing effective washing and dewatering of the captured particles while minimizing the number of moving parts and maximizing the overall system reliability.

Abstract: An improved coolant cleaning method, system, and apparatus, are provided through the use of a filter disk assembly that defines and is rotatable about an axis of rotation of the disk, for removing particulate matter from a fluid flowing through the filter disk assembly in a direction substantially parallel to the axis of rotation of the filter disk assembly. A coolant cleaning system includes such a filter disk assembly, connected in fluid communication with an apparatus for circulating a flow of fluid through the filter disk assembly in a direction substantially parallel to the axis of rotation of the filter disk assembly.

Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another in a curved wedge section through which a material is progressively compressed, wherein the concavity of the wedge section is oriented toward gravity.

Abstract: A filter screen that is used in filtering water and that includes a frame and a grid assembly that is supported by the frame for movement. The grid assembly includes a continuous unbroken drive chain having a guide link, and a screen panel. The screen panel is coupled to the guide link for selective movement between an operating condition and a maintenance condition. When the screen panel is in the operating condition the screen panel is fixed relative to the guide link for movement with the guide link and for filtering water. In the maintenance condition, the screen panel is pivotable relative to the guide link to permit access to the interior of the filter screen for inspection of chain components.

Abstract: A method for filtering a liquid and an apparatus for carrying out the method in which at least one container is provided from which a filtering aid is fed to a dosing device by a delivery device, and the filter aid is supplied to an injecting container and/or to a filter element via the dosing device.

Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another and between which a material is progressively compressed, and a substantially cylindrically-shaped primary roller around which the belts are compressed having a longitudinal axis and ends, wherein the primary roller is provided with a plurality of radially extending fins, each of which has a wing at the free end thereof.

Abstract: The method relates to the recovery of fine sand on floating production equipment in the form of a floating grab-bucket type excavator or floating bucket chain dredger. In this case, the dredged material is dewatered and transported to shore via floating conveyor belts. The dredged material is transferred to dewatering screening machine having a dewatering deck with a dewatering coating. Below the dewatering deck the screening machine has a blind bottom covering the entire surface area, whereby in the direction of conveyance the end zone is provided with a discharge. The discharge is directed at a hydro belt separator, which has a revolving endless conveyor belt with a washing trough as the separation bed, and an ascending part leading away from the washing trough. The running direction of the conveyor belt is in the direction of the ascent, whereby the dredged material is transferred at the discharge of the screening machine to the washing trough of the hydro belt separator.

Abstract: Device for the washing and dewatering a fibrous suspension, which device incorporates two hollow, circular cylindrical filter drums (1), which filter drums incorporate evacuation chambers inside the filter drums for evacuation of fluid. The filter drums rotate in opposite directions to create a pinch (2) where at least one of the said filter drums (1) is installed in a trough (7,8) which partly encloses the outer surface (3) of the filter drum and which, in the direction of rotation of the filter drum, converges towards the outer surface of the filter drum. At least one pulp inflow chamber (4) is installed at the highest point (1) of one or both of the filter drums each equipped with a trough for the introduction of pulp between the outer surfaces (3) of the filter drum and its trough (7,8) for the formation of a fibrous web.

Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another and between which a material is progressively compressed, and a belt washer for cleaning the belt of residual material, wherein the belt washer has at least one wiper holder and at least one belt wiper, wherein the at least one belt wiper is disposed against a first surface of one of the belts and removably retained thereagainst by the at least one wiper holder.

Abstract: Methods and corresponding devices are set forth for the continuous mechanical dewatering of aqueous suspensions or elutriations, particularly of waste-paper suspensions or slurries, between an endless mesh band and an endless compression surface having a closed, smooth surface and running in the direction of operation. The suspension cake to be dewatered is compressed between the mesh band and the compression surface. The requisite pressure is achieved by wrapping the mesh band around the cylindrical compression surface under longitudinal tension, whereby the expelled water is removed from the suspension cake by means of the mesh band. Devices are provided which both increase the operational duration of the dewatering pressure of the existing mesh band on the suspension cake, and at the same time increase the pressure substantially, without obstructing the runoff of the pressed-out water. The method of the invention increases the compression pressure from about 1 bar (heretofore) to a pressure of, e.g.

Abstract: A liquid filter apparatus includes a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via on inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air.

Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another and between which a material is progressively compressed, and a substantially cylindrically-shaped primary roller around which the belts are compressed having a longitudinal axis and ends, wherein the primary roller is provided with a plurality of radially extending fins, each of which has a wing at the free end thereof.

Abstract: A belt filter press for deliquifying a material comprises two endless filter belts disposed adjacent each other so that a portion of the belts travel together and converge towards one another in a curved wedge section through which a material is progressively compressed, wherein the concavity of the wedge section is oriented toward gravity.

Abstract: An apparatus for removing solids from a liquid/solid mixture disposed in a tank and rising to a mixture level, the apparatus including a suction assembly defining a suction opening, the suction assembly linked to a vacuum that causes suction at the opening, a support assembly formed about the suction surface including first and second essentially circular housing walls having wall edges and a filter belt loop sealed to the edges and sized such that the belt is slack and subject to deformation between the edges, a belt section disposed to cover the suction opening and a processor controlling a motivator to periodically alter belt position with respect to the suction opening.

Abstract: An auxiliary oil filtration system and method for filtering oil in an engine is provided. The auxiliary oil filtration system consists of an auxiliary filtration device, an integral oil transfer pump controlled by an electric motor and that is in electrical communication with an electrical control unit, an electronic pressure sensor, fluid conductors, and means for connecting hardware. The auxiliary filtration device is separate from the primary engine lubrication system, and includes a media supply reel having a roll of filtering media thereon which is moveable to a take-up reel. A media indexing system advances the media supply reel as the filtering media becomes plugged. An electronic pressure sensor dictates the advancement of the filtering media when a pre-determined differential pressure across the filtering media is attained. When all of the filtering media has been transferred from the supply reel to the take-up reel, the cartridge is replaced.

Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.

Abstract: A washing system for washing a fiber suspension associated with a fiber stock preparation system, includes a plurality of rolls and a porous fabric carried by the plurality of rolls in a closed loop. The closed loop includes a lower run defining a washing zone, with the porous fabric moving in a running direction through the washing zone. The porous fabric has an upper surface in the washing zone which carries the fiber suspension thereon. A headbox is positioned with the closed loop and above the porous fabric at an upstream end of the washing zone. The headbox discharges a fiber suspension to be washed onto the upper surface of the porous fabric. An accept removal device is positioned within the closed loop and above the porous fabric at a downstream end of the washing zone. A plurality of showers, each having an inlet, are positioned within the closed loop and above the porous fabric in the washing zone between the headbox and accept removal device.

Abstract: A cleaning device for removing solid impurities from viscous material, in particular molten plastics material, comprising, inside a housing (1), a filter band (5) for separating out solid impurities which can be moved in the longitudinal direction of the housing. The filter band (5) is wrapped around a curved supporting area (7) of a fixed supporting member (3) at an angle of wrap of preferably approximately 180°, and is guided on both sides of the curved supporting area (7) in planar supporting areas (15, 17) which lie tangentially and flush against the curved supporting area (7). To reduce the kinetic resistance of the filter band (5), the curved supporting area (7) and at least partly the planar supporting areas (15, 17) are provided with channels (25) extending in the direction of transport of the filter band (5).

Abstract: A cleaning device (1), which is attached to a collecting device comprising a body and wheels (3) in which device a V-shaped brush (2) secured to a belt (7) moves in a groove, whereby the brushes flatten between the trough walls of the cleaning device (1) and a plough captures the detached oil, which drains into an oil receptacle (5). Moreover, a fork (6) for removing brash ice and debris can be mounted in front of the cleaning device (1).

Abstract: An apparatus for use in a sewage treatment plant comprises a settlement tank, an inlet channel for delivering an input sewage flow to the settlement tank, and a screen arrangement having a continuous belt screen for capturing screenings contained within the sewage flow to enable their subsequent removal therefrom. The screen arrangement is arranged within the settlement tank.

Abstract: An apparatus for thickening liquids or thin sludges by water extraction, having a bottom, a tub having an underside, stands supporting the tub on the bottom, a ripening time chamber for receiving the liquids or thin sludges, first devices for admixing a polyelectrolyte for flocculation in the ripening time chamber, a conveyor belt for further dewatering the liquids or thin sludges, and second devices for delivering liquid extracted from the conveyor belt and thick sludge discharges. At least the conveyor belt, the ripening time chamber and the second devices are accommodated in the tub, which thus acts as a frame and a lateral boundary for the conveyor belt, the ripening time chamber and the second devices. All connections required for operation are disposed on the underside of the tub, and the underside of the tub is spaced above the bottom by the stands.

Abstract: A device for dewatering solid/liquid suspensions, especially pulp suspensions, where the suspension is dewatered between two belts, with one dewatering zone being a wedge zone. A pair of rolls downstream of the wedge zone impart both area pressure and line pressure on the pulp web formed by the pulp suspension.

Abstract: The present invention is a screening/washing/dewatering system which utilizes a solids handling pump to vacuum solids captured from a contaminated fluid stream from the system's screening mechanism and to convey them, in a concentrated form and through a closed conduit, to the washing/dewatering mechanism. The use of a solids handling pump enables a screening, washing and dewatering system to contain the captured solids in a completely closed system from their point of capture, through a conveyance system of unlimited length and configuration, to the point that the washed, dewatered screenings are finally discharged. Secondarily, the present invention offers the advantages of being able to capture as small of a solids particle size as is desirable and of providing effective washing and dewatering of the captured particles while minimizing the number of moving parts and maximizing the overall system reliability.

Abstract: A magnetic separator apparatus having a configuration of barium ceramic magnets impregnated into polypropylene bars interspersed onto a conveyor belt which passes through an aqueous solution containing unwanted magnetic particulate. A plurality of spaced-apart magnet pairs embedded in each polypropylene bar are configured to provide maximum field penetration and holding strength of the magnets. Particulate attracted to the plurality of magnet pairs are scraped from the conveyor belt into a collection drawer.

Abstract: Device for the washing and dewatering a fibrous suspension, which device incorporates two hollow, circular cylindrical filter drums (1), which filter drums incorporate evacuation chambers inside the-filter drums for evacuation of fluid. The filter drums rotate in opposite directions to create a pinch (2) where at least one of the said filter drums (1) is installed in a trough (7,8) which partly encloses the outer surface (3) of the filter drum and which, in the direction of rotation of the filter drum, converges towards the outer surface of the filter drum. At least one pulp inflow chamber (4) is installed at the highest point (1) of one or both of the filter drums each equipped with a trough for the introduction of pulp between the outer surfaces (3) of the filter drum and its trough (7,8) for the formation of a fibrous web.

Abstract: A sewage screening apparatus which receives, in use, a sewage flow comprising a screen arrangement having a continuous belt screen for capturing screenings contained within the sewage flow to enable their subsequent removal therefrom. The apparatus also includes an impeller for generating a turbulence effect within the sewage flow to effect washing of the screenings contained within the sewage flow prior to their removal therefrom. The impeller is located within the screen arrangement.

Abstract: The invention relates to a revolving screening rack with a driveable endless screening belt formed by a plurality of screening elements which in each case have a plurality of elongate plates arranged parallel to and at a distance from one another, a bar-shaped connecting element engaging in each case through the plates at their two ends, said connecting element pivotably connecting the plates, engaging one into the other at least in regions, of two screening elements to one another in the manner of a link chain, with a pivotably mounted rack hook element which is capable of being pivotably displaced, at least partially, between two plates located next to one another, and with a steering lever for the rack hook element, said steering lever being pivotably articulated at one end on the rack hook element, said revolving screening rack being distinguished in that the other end (20) of the steering lever (17) is pivotably mounted on the screening belt (2).

Abstract: The invention discloses an improved apparatus for continuous purification of liquids, dewatering and drying of the separated non-filtering solids. The apparatus is intended to be applied for the purification of industrial or household waste liquids, as well water form natural sources, by separating and drying of non-filtering solids. The apparatus can be applied successfully for dewatering and drying of various slurries without the emitting of vapours, dust and other detrimental substances in the atmosphere. The apparatus includes a belt filter (1) with an incorporated filter sector and an elastic thermos-filter press (35). The belt filter ensures a continuous purification of water from different sources by separating the non-filtering solids and detrimental ion components comprised in the water, and ensures their bacterial sterility. The separated non-filtering solids are permanently accumulated in the belt filter, and are mixed with the water fed to be purified forming together a slurry.

Abstract: A filter incorporates a magnetic separator comprised of a series of side by side but spaced apart permanently magnetized bars interconnected to form a train, movably mounted through a tank into which is introduced liquid contaminated with ferromagnetic particles to be removed. The bar train includes a section overlying a vacuum box in the tank which also is overlain with a filter media to remove particles not removed by the separator. The bar train may be mounted to a flight conveyor included in the filter, or alternatively have its own support and drive. A scraper station is located at a discharge end of the tank for removal of accumulated particles from the bars. Scraper blocks are slidably mounted on the bars and remain there throughout the machine cycle, each of the blocks successly engaged with a plate on a band cylinder as the bars are moved into the scraping station. The cylinder is stroked to wipe the bars at the scraper station.

Abstract: A unitary membrane for use in a pressing apparatus includes a semipermeable portion structured and adapted to have a permeability which permits a predetermined fluid flow therethrough, which is positioned between a pair of longitudinal edge portions, wherein the unitary membrane includes a polymeric fabric. The unitary membrane has a thickness less than about 0.1 inches. A plurality of holes are formed through the polymeric fabric at the semipermeable portion. The semipermeable portion has a permeability greater than zero and less than about five CFM per square foot as measured by TAPPI test method TIP 0404-20.

Abstract: A sludge filtration apparatus having chain type belt press with fine fibers of synthetic resin joined thereon wherein a pressing belt (50) for pressing the sludge on and with the filtering belt makes the sludge into the sludge cake, said filtering belt includes a chain (20) being engaged with plural of sprockets of the rollers (40,41,42, 43) and a water absorbing and filtering portion (34) fixed on the chain (20), and wherein said absorbing and filtering portion (34) includes filtering units (33) and elongate grooves (12) for coupling detachably with the filtering units (33).

Abstract: A separator includes a continuous inclined screening belt that passes over an upper roller and a lower roller to screen debris from municipal wastewater. The debris is then conveyed to a debris discharge outlet. A puddle of debris-laden wastewater forms a hydrostatic pressure head on the upper surface of the screening belt to assist in forcing the wastewater through the screening belt. Wastewater that passes through apertures in the screening belt is deflected by a deflector plate that shields the return path of the screening belt. The screened wastewater is then directed to the wastewater outlet. In a preferred embodiment, a belt-cleaning brush is disposed along the return path and brushes clinging debris from the screening belt toward the debris discharge outlet. Additionally, the screening belt rides on and is supported by a perforated backing plate as it travels from the lower roller to the upper roller.

Abstract: A belt press having a frame with a first belt and a second belt rotatably mounted on the frame. A curved inlet guide is movably carried on the frame. The inlet guide has a decreasing radius of curvature from an inlet end to an exit end. A positioning assembly is mounted on the frame and is attached to the inlet end of the inlet guide to raise and lower the inlet end of the inlet guide.

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 flow divider box disposed beneath a continuous-loop scalper screen mud separation unit that is driven in a continuous loop conveying and discharging large amounts of drill solids at the end of the separation units end overboard or into a reserve pit. The flow divider box has a box-like housing with an array of openings to redistribute or separate the fluid flow stream, drilling fluid, or drilling mud, in the flow path of the separation unit and selectively supply drilling fluid or drilling mud to a sundry of shale shakers in the process of separating the sediments obtained from a well bore. The flow divider box has a series of collection divider boxes disposed below the separator unit that separate and redistribute drilling fluid or drilling mud, upstream of the conventional solids control equipment of the mud system of a drilling rig. The individual collector boxes are rectangular, baffled, and have adjustable gates parallel to the flow divider box, capable of 2′ head capacity.

Abstract: The invention relates to a process for the manufacture of photopolymer printing blocks, which are utilizable for producing printed matter by flexography, typography or dry offset, of the type including a stage for polymerizing areas by exposure to ultraviolet rays; a stage for engraving non-polymerized areas by immersion and brushing in an engraving bath contained in an engraving tank, the bath becoming loaded with dissolved particles or particles in suspension during the engraving stage; and a separation of the constituents of the engraving bath, with the liquid obtained at the time of separation being injected back into the engraving tank, characterized in that the separation consists of filtration, during which the particles are progressively eliminated. The invention also relates to an engraving device for carrying out the process.

Abstract: Methods for the concentration of a dilute material such as a fiber suspension are disclosed including enclosing the dilute material between a first straining belt and a second straining belt both moving through endless paths, and in which the width of the first straining belt is greater than the width of the second straining belt, and the method includes causing the longitudinal edges of the first straining belt to overlap the longitudinal edges of the second straining belt in an initial concentration stage, unfolding the longitudinal edges of the first straining belt and then further compressing the concentrated layer produced against the first straining belt in a further concentration stage. Apparatus for carrying out this method is also disclosed.

Abstract: Apparatus and process for separating components of a treatment mixture from a waste treatment system comprises feeding the treatment mixture to an endless filtering belt. The filtering belt has a mesh size selected to permit liquid components of the mixture to filter down through the belt while retaining particulate components thereon. The belt is moved by a drive system generally in a circuit between upstream and downstream ends of the apparatus as liquid components are separated from the mixture by filtering through the filtering belt. Unfiltered mixture is passed beneath a press disposed in opposed relation with the belt generally between the upstream and downstream ends of the apparatus. The press is capable of applying a squeezing pressure against the mixture to squeeze the mixture between the press and the filtering belt to separate water and liquified fatty components from the mixture for filtering through the belt.