Abstract: Disclosed is an underbalanced drilling vibrating screen integrated with automatic drainage and vacuum chucks, and belongs to the technical field of solid-phase control of petroleum drilling. The underbalanced drilling vibrating screen comprises a base, a screening device and a negative pressure generating device, wherein the screening device and the negative pressure generating device are arranged on the base; the screening device comprises a shell, an exciting motor arranged on the shell, a plurality of screens arranged in the shell, and at least one drainage component; and the drainage component communicates with at least one screen through the vacuum chuck, the negative pressure generating device communicates with the vacuum chuck, and the drainage component is integrally formed with the vacuum chuck.

Abstract: A laboratory sample container carrier cleaning apparatus is provided comprising a revolving device, being adapted to move a sample container carrier supplied to the revolving device along a circular path, and a cleaning device, being adapted to clean the sample container carrier being moved along the circular path.

Abstract: The technology disclosed relates to moisture removal from wood materials. In particular, it relates to a press that includes a continuous and liquid permeable sheet metal band that makes use of viaways, grooves, perforations, or combinations thereof allowing liquid to permeate therethrough. The press can also include a first pressing roller located above the sheet metal band and a first anvil roller located below the sheet metal band and forming a first nip with the first pressing roller and the sheet metal band, such that the sheet metal band being located between the first pressing roller and the first anvil roller.

Abstract: A system for measuring volume flow of a material includes: an imaging receiver for receiving images of a screen deck of a vibratory shaker from an overhead position; at least one illumination device for projecting a line of light onto the screen deck from an angle different than a viewing angle of the imaging receiver to the screen deck; and a mounting bracket for holding the imaging receiver and the at least one illumination device in a substantially fixed relative position to one another and to the screen deck. The system is determines the volume flow of the material based on the images of the screen deck.

Abstract: Apparatus and methodologies are provided for pumping fluids from a body of fluids. Herein, an apparatus operably connected to at least one pump for pumping fluids from a body of fluids is provided, the apparatus having a pump hose with a first intake end for receiving the pumped fluids and a second outlet end operably connected to the pump, a pump intake assembly, fluidically connected to the intake end of the pump hose, the pump intake assembly having at least one fluid control valve, a rotatable filter cage, centrally disposed about the pump intake assembly, and at least one fluid injection pipe centrally disposed within the pump hose for supporting the at least one fluid control valve, and for injecting fluids to drive the rotation of the rotatable filter cage. Herein, methods of utilizing the fluid pumping apparatus are provided.

Abstract: An attachment and retaining mechanism is described for removably attaching a rotating filter element to a rotating shaft. The rotating filter element includes a filter media that is driven by a drive mechanism that rotates the rotating shaft. The filter element is removably attached to the rotating shaft such that the filter element and filtration system can be periodically replaced and/or serviced. In some arrangements, the drive shaft includes a D-shaped section that interacts with a mating section of the filter element sleeve of the rotating filter element. In other arrangements, the drive shaft includes at least one flat drive surface.

Abstract: Method for detecting an analyte of interest in a sample. The method can include providing a container including a microstructured surface, and centrifuging the container toward the microstructured surface to form a sediment and a supernatant of the sample. Following centrifugation, the container can be inverted to decant at least a portion of the supernatant of the sample from the second portion, such that a concentrate (e.g., including the sediment) of the sample is retained in the microstructured surface. The concentrate can then be interrogated in the microstructured surface for the analyte of interest. In some embodiments, at least a portion of the second portion can be substantially transparent, such that the concentrate can be interrogated from the outside of the container, without requiring that the container be opened prior to interrogation.

Abstract: Provided is a method of producing a wet master batch, including the step of: solid-liquid separating and dehydrating a coagulum slurry obtained by mixing a rubber latex with a carbon black slurry containing a carbon black dispersed in water and coagulating the mixture, the solid-liquid separating and dehydrating step including gravity filtering and vacuum filtering the coagulum slurry on a filtration filter and then pressurizing, by means of a pressurizer, the coagulum slurry on the outer peripheral surface of a drum, to thereby pressure dehydrate the coagulum slurry. Also provided is a solid-liquid separating and dehydrating apparatus for wet master batch production, which includes: a filtration filter; a filtration portion; a drum; and a pressurizer.

Abstract: The invention relates to a filter for continuous filtration of a suspension under pressure, with a pressure vessel (1), rotating filter elements (2) disposed in the pressure vessel (1), where the filter element (2) passes through one filter cycle for each rotation, with filter zones in liquid and gaseous phase, also with filtrate channels (4?) that are connected between the filter elements (2) and separate filtrate outlets (14, 14?, 215) for each filter zone, as well as a device to control the individual filtrate zones by means of a control disc (44), where the control disc (44) has filtrate outlets (114, 115) for liquid and gaseous phase. It is primarily characterized in that a venting zone (46) is provided before the filtrate outlet of the liquid phase, viewed in the direction of the filter cycle. Thus, the compressed air in the filter elements (2) and filtrate channels (4?) can be carried off and pressure-relieved in a favorable manner.

Abstract: A screening system comprises a tank (20) containing a sewage screen (30), wherein the tank is configured for attachment to a sewage channel, and to receive sewage flow from an upstream point of the channel, and then to direct the sewage flow through the sewage screen (30), and then to return the screened sewage flow back into the channel, at a downstream point, or directly to a downstream treatment, and wherein the tank (20) is configured to decrease the velocity of the sewage flow in the tank relative to the channel, such that grit can settle at the bottom of the tank, and wherein the sewage screen (30) comprises a working screening surface (31), a portion of which lies in a substantially horizontal plane, and is positioned below the invert level of the sewage channel at the upstream point, when in use. Screen and tank used within the before mentioned system as well as the method of screening sewage using the system are also disclosed.

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 fluidized bed processor of the present invention includes an internal filter assembly with a rack and a cartridge-type filter supported at the lower end by a bracket. The rack includes an elongated rod extending through the filter. An end cap is provided on the lower end of the rod for normal sealing engagement with the filter bracket. During normal operation of the processor, the upper and lower ends of the filter are sealed. During or after cleaning of the filter, the rack is lowered, and a spring separates the filter and support bracket from the end cap so as to create a gap for drainage of cleaning fluid.

Abstract: A system for cleaning up an oil spill and recovering the spilled oil includes frames supporting superhydrophobic oil-absorbing nanowires. A first container supports the frames with the nanowires. A mixture of oil and water is pumped into the first container where the oil from the mixture is absorbed by the nanowires as water is separated from the mixture and deposited in the first container where it is then pumped therefrom. A second container supports the frames with the oil so-absorbed by the nanowires. The frames with the oil so-absorbed by the nanowires are heated whereby the oil so-absorbed separates from the nanowires and is deposited in the second container. The oil so-deposited in the second container is then pumped therefrom.

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: The invention is directed to a purifying device for sludge under water and a method for operating the same. The device includes a main fixing frame having an accommodating portion assess to the outside, a hollow liquid container in the accommodating portion, wherein the liquid container is provided with a liquid-flow hole and at least a backwash hole, multiple filters on the liquid container, and a pump connected to the liquid-flow hole at the liquid container through a liquid pipeline. The method includes steps: moving the liquid container having the filters to an area having a liquid to be filtered; leading the liquid to flow into the liquid container through the filters filtering out solid particles contained in the liquid; and leading a fluid to flow into the liquid container such that the filters can be backwashed accompanying with an external cleaning device if the filters are clogged.

Abstract: A system and method include a shaker configured to separate solids from a drilling fluid, the shaker having a screen assembly, and an actuated arm operatively coupled to the shaker, the actuated arm configured to interact with the screen assembly of the shaker. The actuated arm is configured to interact with the screen assembly of the shaker, with the actuated arm configured to remove, to inspect, to clean, to repair, or to replace the screen assembly of the shaker.

Abstract: This invention relates to a sieve cloth and a method of connecting the sieve cloth to a sieve apparatus of a type having an endless sieve cloth supported by a support belt which, in operation, is structured in a manner allowing it to rotate around at least two spaced-apart turning rollers. The method includes the steps of providing at least one sieve cloth sheet having an upper side, a lower side, two side portions and a first end portion and a second end portion extending between the side portions; bringing at least a portion of the sieve cloth sheet into engagement with a portion of the support belt; positioning the sieve cloth sheet against the support belt by moving the support belt around the turning rollers; bringing at least two adjoining end portions into engagement with each other until the at least one sieve cloth sheet forms an endless sieve cloth. A method of controlling the separation of solid particles from a fluid is also described.

Abstract: A water treatment apparatus includes a tank, a driving unit, a filtered-water pipe, a filtering unit and at least one scraping unit. The tank includes a wall, an inlet pipe extending through an upper portion, and an outlet pipe extending from a lower portion. The driving unit is located on an external side of the tank. The filtered-water pipe extends throughout the tank and is connected to the driving unit. The filtering unit includes flat filtering bags located around the filtered-water pipe. The flat filtering bags can be spun together with the filtered-water pipe. The scraping unit includes scrapper assemblies each located between and in contact with two adjacent ones of the flat filtering bags.

Abstract: The present invention relates to a pressurized filtration plant that includes: a sealed tank (1) in which discs (2) are provided including filtering sectors (20) carried by a rotary shaft (3) and connected to collectors within said shaft, a dispenser (10) enabling the egress of filtrates, the discharge of spinning air and the intake of blowing air for releasing the spun cakes, at least one duct for supplying a liquid laden with solid particles, at least one duct or discharging the filtrates, and a hopper (1b) for recovering the solid particles, characterized in that the discs (2) are vertically arranged so that the lower portion thereof is submerged in buckets (4) covered with deflectors (41) and including means for scrapping solid material deposits on the outer walls thereof.

Abstract: The present invention relates to a filtering device for fluids, in particular thermoplastics, comprising a screen carrier (2) which has a rotationally cylindrical outer face (41) and is mounted rotatably in a rotationally cylindrical recess (5), adapted to its circumference, of a stationary housing (3) and in which a number of screening nests (6) having filter arrangements (7) are formed along its circumference. According to the invention, there is provision whereby the screen carrier (2) is penetrated by a rotationally cylindrical core part (1) and is mounted rotatably on this, the core part (1) and the housing (3) being designed to be stationary and fixed in terms of rotation with respect to the rotatable screen carrier (2). (FIG.

Abstract: A system and method for concentrating samples. The system can include a first container adapted to contain a sample. The first container can include a first portion and a second portion adapted to be removably coupled to the first portion. The system can further include a second container comprising the second portion and a third portion adapted to be removably coupled to the second portion. The method can include centrifuging the first container in a first orientation toward the second portion of the first container; retaining a concentrate of the sample in the second portion of the first container; and centrifuging the second container in a second orientation toward the third portion of the second container, such that the concentrate retained in the second portion is moved into the third portion of the second container, the second orientation being different from the first orientation.

Abstract: A system for separating components from a slurry of drilling fluid and drill cuttings on a shaker screen having an upper side and a lower side within a shaker. The system also has a pressure differential generator to pull an effective volume of air through a section of the shaker screen to enhance the flow of drilling fluid through the section of the shaker screen and the separation of drilling fluid from drill cuttings and further maintain an effective flow of drill cuttings off the shaker. A method of separating components of a slurry of drilling fluids and solids has the steps of delivering the slurry to a shaker, flowing the slurry over a first screen and applying an effective amount of vacuum to a first portion of the first screen to remove the drilling fluids from the slurry without stalling the solids on the first screen.

Abstract: An apparatus (25) for use in screening a liquid and solids mixture feed (2) comprises a conduit (18), including a screening portion (22) that is formed and arranged to divide a liquid and solids mixture feed flowing through the conduit. The feed (2) is divided into a first, cleaned stream (C1) comprising liquid and solid particles of below a selected size limit, and a second, concentrated, stream (24) comprising liquid, and particles above the selected size limit. The apparatus (25) may be a stand alone module, part of a system with other solids and liquids separating equipment or an integral part of a solids and liquid separator such as a shale shaker. Methods of using the apparatus (25) are also described.

Abstract: A filtering apparatus has a filter tank, a conveyer having a scraper, a primary filter, and a cylindrical rotating secondary filter. The filter tank is divided into a first filter tank portion and a second filter tank portion by the primary filter. Sludge deposited at the bottom of the first filter tank portion is conveyed toward a sludge discharge portion by a first portion of the scraper. A liquid in the first filter tank portion is filtered by the primary filter and flows into the second filter tank portion. A liquid in the second filter tank portion is filtered by the secondary filter and supplied to a clean tank. The sludge adhering to the secondary filter is dropped onto the primary filter.

Abstract: Certain examples describe systems and methods for increasing plasma extracted from donor blood. An example method includes receiving blood extracted from a donor connected to a blood collection machine. The example method includes filtering the blood using a filtration device to remove at least a portion of plasma included in the blood to separate the plasma removed from remaining blood. The example method includes routing the plasma removed for collection. The example method includes re-filtering the remaining blood using a or the filtration device to remove additional plasma from the remaining blood. The example method includes routing the additional plasma removed for collection.

Abstract: Plant for treating drilling muds, which can be installed in building sites, for performing excavations or foundations, comprising: a main mud storage tank, containing the clean mud ready to be conveyed to the same excavation; a first grizzly screen; a mud processing hopper; at least one cyclone stage, provided with at least an inlet in which mud to be treated is introduced and with at least a first outlet from which lightened mud (Fa) exits having a lower density than the entering mud, and with at least a second outlet from which a high density mud (Fd) exits, such mud having a higher density than the entering mud; and a dewatering screen. Said devices are connected together through pipes in such a way that a mud filled with detritus coming from the excavation, is treated in order to be able to be reused once it is returned to the excavation.

Abstract: Systems and methods for separating fluids from drill cuttings, specifically, shakers that incorporate modifications including vacuum systems and/or partitions and methods of operating such shakers to affect a high degree of fluid separation. The systems and methods are effective across a variety of screen sizes, vacuum flows and vacuum designs. The systems are also particularly effective in assisting in the separation of gases from drilling fluids.

Abstract: A wastewater filtration device, the device including a tank having end walls, a first screen rotationally mounted adjacent one tank end wall, and a second screen rotationally mounted adjacent the other tank end wall, adjacent the fine screen. The device further includes an inlet in one end wall adjacent the fine screen and into the fine screen, and an outlet in the other end wall adjacent the second screen and out of the second screen. A dividing wall is between the first screen and the second screen, so that water in the inlet flows into the first screen, and then through the first screen out into the tank, around the dividing wall, and then through the second screen into the outlet.

Abstract: A filtering unit includes alternately arranged membranes and positioning rings. A seal is secured to each of the positioning rings. Each of the positioning rings includes an annular body, arched cutouts defined in an internal edge of the annular body, first and second engaging members formed on the annular body, and at least one slot defined in the annular body. Each of the first engaging members is located near an end of a related one of the arched cutouts. Each of the second engaging members is located near another end of a related one of the arched cutouts. The second engaging members can be engaged with the first engaging members of another positioning ring extending through the arched cutouts. Each of the seals includes two sealing portions extending on two opposite faces of the annular body and at least one connecting portion extending between the sealing portions through the slot.

Abstract: The invention relates to a filtration cell that comprises a tank with a bottom wall (2) and four side walls extending upwards from the bottom wall as well as an upward opening, the four side walls including two opposite longitudinal walls (3, 5) as well as a front facing wall (4) and a rear facing wall connecting them, a filtration bed (7) supported in the tank, an outlet opening for discharging the filtrate, and a covering flap (24) protruding outwards from the top of one of said longitudinal walls, the longitudinal wall (5) opposed to that fitted with the flap including a lower portion (25) extending upwards from the bottom wall (2) and an upper portion (26) extending slantedly upwards and inside the tank from the top of said lower portion (25), and/or the front facing wall (4) comprises a bottom portion (27) extending upwards from the bottom wall (2) and a top portion (28) extending slantedly upwards and inside the tank from the top of said bottom portion (27).

Abstract: A melt filter for cleaning a plastic melt issuing from an extruder has a wheel rotatable about an axis and having an outer rim and a plurality of spokes forming an annular array of axially open spaces, a pair of housing plates axially sandwiching and completely covering the wheel and forming offset from the axis a melt passage extending axially through the wheel at the spaces, and removable filter elements braced axially against the wheel at the spaces between the spokes and angularly movable with the wheel with the melt flowing through the filter elements when same are aligned with the passage. One of the plates being formed with an edge cutout. A part on the one housing plate that can cover and close the cutout during normal operation of the melt filter can open and uncover the cutout for changing the filter element aligned axially with the cutout.

Abstract: A fluid system for a pump circuit (10), in particular a hydraulic high-pressure pump circuit, has a function block (12). In the housing of the function block, fluid-conducting paths extend and are connected to valve components (32, 46) at least partially. A filter device is an at least partially integrated constituent part of the function block of the fluid system. The filter device (46) with its filter housing (56) can be connected to the function block (12) such that at least one filter element (70) is received in the installation space (72) of the function block.

Abstract: The invention relates to a filtering apparatus in which improvement of maintenance of a driving system, reduction of the number of components, and ease of assembly are achieved.

Abstract: A quickly cleanable water processor includes a shell, a water pipe, at least one filtering unit and a cleaning unit. The shell includes a space defined therein, a water inlet, a water outlet and an air inlet. The water inlet and outlet and the air inlet and outlet are in communication with the space. The water pipe is disposed in the shell and made with slots in communication with the water inlet. The filtering unit is detachably provided around the water pipe. The filtering unit includes alternately arranged membrane bags and water-guiding discs. The cleaning unit includes an air pump and an air pipe extended into the shell from the air pump through the air inlet. The air pipe includes apertures through which air reaches the membrane bags from the air pipe.

Abstract: Apparatus for recovering clean drilling fluid from fluid contaminated with entrained debris comprises an input conduit for the contaminated drilling fluid, the conduit being branched whereby a portion of the contaminated fluid is delivered to a preliminary separation stage and the remainder flows to a main separation stage, each said stage comprising a screen for separating debris from the fluid. The preliminary separation stage comprises a vibrating screen and conveyor means for conveying separated debris into the remainder flow to the main separator stage, thereby increasing the proportion of entrained debris in the remaining fluid.

Abstract: A system for extracting liquid from a mass comprising a portable platform having an upper surface, a system mass input, a polymer feeding and blending system on the upper surface, a liquid extraction assembly on the upper surface, and piping having a first section between the system mass input and the polymer feeding and blending system, and a second section between the polymer feeding and blending system and the liquid extraction assembly. The system is configured to have mass inputted into the system mass input, transport the mass to the polymer feeding and blending system through the first section of the piping, inject polymer into the mass in the polymer feeding and blending system, and transport the mass from the polymer feeding and blending system to the liquid extraction assembly. Pressure from mass forced into the liquid extraction assembly forces liquid in the mass to exit the mass.

Abstract: A system for extracting liquid from a mass comprising a portable platform having an upper surface, a system mass input, a polymer feeding and blending system on the upper surface, a liquid extraction assembly on the upper surface, and piping having a first section between the system mass input and the polymer feeding and blending system, and a second section between the polymer feeding and blending system and the liquid extraction assembly. The system is configured to have mass inputted into the system mass input, transport the mass to the polymer feeding and blending system through the first section of the piping, inject polymer into the mass in the polymer feeding and blending system, and transport the mass from the polymer feeding and blending system to the liquid extraction assembly. Pressure from mass forced into the liquid extraction assembly forces liquid in the mass to exit the mass.

Abstract: A vapor deposition system includes a filter-diffuser device connected to a vapor inlet within a vacuum chamber for simultaneously filtering inflowing vapor to remove particulate matter while injecting vapor containing perfluordecanoic acid (PFDA) into the chamber through radially arranged porous metal filters to enable the deposition of a uniform monolayer of PFDA molecules onto the surfaces of a micromechanical device, such as a digital micromirror device.

Abstract: A system for extracting liquid from a mass comprising a portable platform having an upper surface, a system mass input, a polymer feeding and blending system on the upper surface, a liquid extraction assembly on the upper surface, and piping having a first section between the system mass input and the polymer feeding and blending system, and a second section between the polymer feeding and blending system and the liquid extraction assembly. The system is configured to have mass inputted into the system mass input, transport the mass to the polymer feeding and blending system through the first section of the piping, inject polymer into the mass in the polymer feeding and blending system, and transport the mass from the polymer feeding and blending system to the liquid extraction assembly. Pressure from mass forced into the liquid extraction assembly forces liquid in the mass to exit the mass.

Abstract: A strainer system comprises a strainer housing having a first end portion and a second end portion, an inlet for raw fluid and an outlet for strained fluid, the outlet for strained fluid being disposed in the first end portion of the housing; a strainer basket having a strainer screen and disposed within the housing, the external surface of the strainer screen being in flow communication with the raw fluid inlet and the internal surface of the strainer screen being in flow communication with the strained fluid outlet; a backwash collector assembly comprising a backwash conduit having an opening disposed adjacent the outer surface of the strainer screen, the backwash conduit and the strainer basket being moveable relative to each other, so as to allow the opening to pass across the external surface of the strainer screen; a backwash outlet disposed in the second end portion of the strainer housing; and drive means for moving one of the backwash conduit and the strainer basket relative to one another, the drive

Abstract: A rotatable water treatment device including a hollow shaft and multiple filtering units is provided. The hollow shaft has an axis hole, an external wall and a plurality of through holes defined through the external wall and communicating with the axis hole. The multiple filtering units watertightly mounted on the external wall of the hollow shaft, and each of the filtering units includes a center hole, two clipping nets, a supporting net and two filtering membranes. The supporting net is mounted between the clipping nets and two filtering membranes sandwiches the clipping nets such that the filtering membranes can be prevented from sinking into the meshes of the supporting net with the pump effect to accelerate the conducting of the water-filtering.

Abstract: A device for fluid assay comprising a carousel (12), mounted about a hub (14), disposed in a complementary shaped housing (16). The carousel (12) is divided into a plurality of chambers (20, 22, 24, 26, 28, 30) disposed radially about the hub (14). The chambers (20, 22, 24, 26, 28, 30) are arranged into pairs which are disposed diametrically opposite one another and which communicate with each other via the hub (14).

Abstract: A system (10) for extracting liquid from a mass comprising a portable platform (12) having an upper surface (14), a system mass input (16), a polymer feeding and blending system (18) on the upper surface (14), a liquid extraction assembly (40) on the upper surface (14), and piping (22) having a first section (24) between the system mass input (16) and the polymer feeding and blending system (18), and a second section (26) between the polymer feeding and blending system (18) and the liquid extraction assembly (40). The system is configured to have mass inputted into the system mass input (16), transport the mass to the polymer feeding and blending system (18) through the first section (24) of the piping, inject polymer into the mass in the polymer feeding and blending system (18), and transport the mass from the polymer feeding and blending system (18) to the liquid extraction assembly (40). Pressure from the mass forced into the liquid extraction assembly (18) forces liquid in the mass to exit the mass.

Abstract: A filter with filter chambers disposed in an annular zone on a rotatable common disc has a multitude of separate flow passages, each flow passage containing within its flow stream at least one filter chamber on the common rotatable disc, and each identical flow passage is rotated around the axis of rotation of this common rotatable disc, thus multiplying the flow capacity of a rotatable disc filter by using the same disc to filter multiple streams. The rotatable common filter disc is disposed within a slot formed by body blocks and spacer blocks and rotates around a hub, the spacer blocks and hub controlling slot width such that rotatable metal to metal seals form between the disc and the body blocks in contact with a surface of the disc, forming leak free seals. The rotation of the rotatable common disc causes filter chambers, sealed within the slot, to change filter chambers as material accumulates within the filter chambers.

Abstract: The present invention relates to a method of treating lime mud slurry being generated in a causticizing process in a pulp mill in a disc filter, in which method the lime mud is fed in the filter, thickened on the filter discs and removed from the filter discs. The lime mud is treated in at least two stages in one and the same disc filter in such a way that the lime mud slurry entering the filter is fed onto only a part of the filter discs, on which lime mud is thickened and removed from the discs, and the removed lime mud is re-slurried in liquid, and the lime mud slurry thus obtained is fed onto a second part of the filter discs, on which lime mud is thickened and removed from the filter and led into a subsequent process stage. The invention also relates to an apparatus.

Abstract: A pool/spa skimmer includes a housing, a face plate, and a flexible weir gate. The housing and plate are dimensioned to allow water to flow in a vertical column. The interior of the housing has a curved wall so that when a column of water passes through the open gate and into the housing, a whirlpool effect is realized. A vertical filter cartridge is mounted on a rotational bearing so that it can spin about its axis. The inlet of a pump is coupled to the cartridge via the bearing and is also coupled to a second water inlet via a vacuum operated valve. When the filter is clean, water is drawn through it and the filter spins about its axis due to the whirlpool effect. When the filter reaches a threshold dirt covering, water is no longer drawn through it and the vacuum operated valve.

Abstract: The present invention realizes electronic commerce by providing a reception section that receives product information and service information and a barcode formation section that forms a barcode based on the received information, displaying the barcode formed by the barcode formation section on a display section and allowing a barcode reader provided at a shop terminal, etc. to read this barcode.

Abstract: A fluid filtering device includes a plurality of filtering wells and an angling mechanism which adjusts the angle of the membranes within the filtering wells relative to a line of a centrifuge where the line is perpendicular to the axis of rotation of a centrifuge and passes through the center of a major plane of the filtering device. The angling mechanism can include a wedge located between the center of rotation of a centrifuge and a swinging bucket of the centrifuge. The angling mechanism can also be located within each filtering well and can provide individually specified angles for each membrane, relative to the line of the centrifuge.

Abstract: A rotating drum pressure differential filter is provided whereby a layer of filter medium is continuously refreshed by a spray applicator device after the layer is utilized to filter components sample medium and a portion of the layer is subsequently scraped to remove sample medium waste from the layer. Methods of filtration using the device are also provided as are systems employing two or more such filters. A spray applicator device useful for refreshing a filter medium on the outer surface of a rotating drum pressure differential filter is also provided as is a retro fit kit useful in modifying existing rotating drum pressure differential filters to enable the continuous formation of a refreshed filter medium layer. The continuously refreshed filter and filter systems provide a minimized down time of the filter and system operations. Multiple-stage filtration processes are also provided and are particularly in the recovery of enzymes from fermentation broths.

Abstract: A sanitary filtration plant comprises an oblong, tubular pressure vessel (1), which includes one or more helical filter elements (2 to 4). Each helical filter element comprises a spiral-wound filter member (5 to 7) and a central tube (8 to 10). At the end being the outlet end, each helical filter element (2 to 4) comprises a supporting means (19, 20, 21) formed as a wheel with a hub (22), spokes and a rim (31) and centrally a transition means (35). The transition means is adapted to ensure a sealing flow connection between abutting ends of central tubes (8 to 10). In addition, each supporting means (18 to 21) comprises plane sides for abutment against the ends of the filter members of the respective helical filter elements (19 to 21), and along the external periphery they comprise a sealing means (39) for a sealing abutment against the inner side of the pressure vessel (1).