Abstract: An apparatus may include: a shaker body; a shaker screen disposed within the shaker body; and one or more air nozzles disposed within the shaker body, wherein the one or more air nozzles is positioned below the shaker screen, and wherein the one or more air nozzles is operable to deliver a pressurized stream of air to at least a portion of a bottom of the shaker screen.

Abstract: A pair of filter cloths is wound around a first roll a plurality of times by being wound around the first roll, then being wound around a second roll to return to a space between the first roll and the pair of filter cloths wound around the first roll, and being wound around the first roll again. The pair of filter cloths wound around the first roll the plurality of times applies a pressing force to the first roll.

Abstract: An apparatus for separating solids from solids laden drilling fluid, the apparatus comprising a skid and a basket resiliently suspended thereto and a vibratory mechanism to vibrate the basket, the basket having at least one screen deck for receiving at least one screen, the basket having a feed end at which solids laden drilling fluid is introduced and a discharge end at which solids are discharged through a solids discharge opening, the apparatus further comprising a hood encompassing at least a discharge end of the basket and at least one extraction outlet arranged at the discharge end to remove fume laden air from the basket.

Abstract: The invention relates to a method and apparatus to continuously monitor and control acoustic energy and vacuum pressure to maintain a net unidirectional flow of multi-phase heterogeneous fluids through a porous filter or membrane. The heterogenous fluid may come form a variety of sources including biological sources such as, blood, bone marrow aspirate (BMA), adipose tissue (lipoaspirate), urine, saliva, etc.

Abstract: The invention relates to a screen frame adapted for use in a shaker to separate solids from a liquid/solid mixture and to which woven wire mesh is to be attached, comprising an outer perimeter and a plurality of plastics ribs extending between opposing regions of the perimeter, the plastics ribs together forming an upper face and a lower face, wherein the frame further comprises at least one metal rib extending between opposing regions of the perimeter and extending from the upper face to the lower face, and to a shaker comprising at least one such screen frame.

Abstract: An aqueous delivery system is described including at least one surfactant and at least one water insoluble wetting agent. Further described are low surface energy substrates, such as microporous polytetrafluoroethylene, coated with such an aqueous solution so as to impart a change in at least one surface characteristic compared to the surface characteristics of the uncoated low surface energy substrate.

Abstract: A screen media element having at least one apertured section. The apertured section has a first surface intended to receive and carry material to be screened, a second surface opposite the first surface, apertures extending from the first surface to the second surface and a circumferential surface connecting the first and second surfaces. The apertured section is surrounded by an outer frame along the circumferential surface, characterized in that the apertured section is made from ceramic material and that the outer frame is made of elastomeric material. The invention further relates to a method for manufacturing such a screen media element, and a screen comprising such screen media elements.

Abstract: A vibrating centrifuge having a separation screen that is rotated and vibrated to separate a material, typically slurry (e.g. coal slurry). The separation screen is vibrated by a vibrator, such as an unbalanced motor. One or more constraint members, preferably leaf springs, are provided that restrict vibration generated by the vibrator to a single degree of freedom that is parallel to the drive shaft axis. The vibrating centrifuge has a biasing member in the form of a compression spring to tune the vibration frequency. Optionally a tuning mass can also be used to tune the vibration frequency.

Abstract: There is provided a screen frame adapted for use in a shaker to separate solids from liquid/solid mixture and to which woven wire mesh is to be attached, comprising a plurality of intersecting elongate members (12) defining a plurality of openings (10), or cells, wherein at least one protrusion (26) in the form of an elongate rib extends partway across each opening (10).

Abstract: The present application is directed to the separation of a solid fraction from a fluid sample particularly a therapeutic cellular fraction from a biological sample such as a bone marrow sample by a porous filter which separates a filtration unit into an upper pre-filtration chamber into which a fluid sample requiring cell separation is introduced and a lower post-filtration chamber into which a fluid capable of transmitting an acoustic standing wave is introduced. An acoustic element is coupled to a substrate which is located within and at the bottom of the lower chamber and which resonates in response to the acoustic generating element and generates a standing wave through the two fluid phases and the filter to agitate the sample. Simultaneously, a cyclic process of vacuum draw, causes movement of the sample downwards through the filter. Vacuum pressure, fluid flow rate and frequency of vibration are controlled from a remote unit housing appropriate pumps and valves.

Abstract: The present invention describes an apparatus (1) for the sieving and fluid separation of a material containing fractions of a solid and fluid, the material being placed on an upper side of at least one sieving element (13), and the apparatus (1) being provided with at least one fluid-flow-generating device (5) for the production of a fluid flow through a portion of the material-carrying sieving element (13). The invention also describes a method of using the apparatus (1).

Abstract: A system for processing returned drilling fluid including a flow line configured to provide a return flow of drilling fluids and at least one vibratory separator having at least one screen, wherein the vibratory separator is fluidly connected to the flow low and is configured to receive at least a partial flow of fluids and separate the flow of fluids into a primarily fluid phase and a primarily solids phase. The system further includes a dual-trough configured to receive the primarily solid phase from the at least one vibratory separator and a slurry tank configured to receive the solids phase from the trough. Additionally, a method of processing a return drilling fluid including dividing the return drilling fluid into a primarily fluids phase and a primarily solids phase with a primary separatory operation.

Abstract: A solid-liquid separating system of a parallel plate conveying type can efficiently dehydrate sludge at an inlet and effectively dehydrate it at an outlet, and assures good solid-liquid separating performance. A filter is constituted by a first plate group and a second plate group which perform the parallel motion and displacement left and right, and up and down on the basis of the circular motion. The first plate group includes a plurality of plates A arranged with predetermined spaces. The second plate group includes a plurality of plates B which are as thick as the plates A, and plates C which are thicker than the plates B. The plates B and C are separated. A press unit (not shown) presses sludge at an outlet, where gaps between plates are narrowed. Even when the sludge is dehydrated by applying pressure, few solids will flow out.

Abstract: The present application is directed to the separation of—a solid fraction from a fluid sample particularly a therapeutic cellular fraction from a biological sample such as a bone marrow sample by a porous filter (2) which separates a filtration unit (1) into an upper pre-filtration chamber (3) into which a fluid sample (4) requiring cell separation is introduced and a lower post-filtration chamber (5) into which a fluid (6) capable of transmitting an acoustic standing wave is introduced. An acoustic element (8) is coupled to a substrate (7) which is located within and at the bottom of the lower chamber (5) and which resonates in response to the acoustic generating element (8) and generates a standing wave through the two fluid phases and the filter to agitate the sample (4). Simultaneously, a cyclic process of vacuum draw (9). causes movement of the sample (4) downwards through the filter (2).

Abstract: A method and device for separating particles from a liquid having particles therein, using a filter sized to permit the liquid to flow through pores, while retaining a substantial portion of the particles on the filter, with an absorbent layer contacting the back of the filter to facilitate liquid movement away from the particles.

Abstract: The device according to the invention serves for classifying or concentrating liquids laden with fibres or solids by means of screening or filtration. For this purpose, a cylindrical fine screen is arranged in a vertical position in a housing comprising an axially cylindrical vibrator being somewhat smaller than the fine screen so as to produce an annular gap between the screen and the vibrator. In the vibrator, there is a vibration motor with imbalances, which generates circular horizontal oscillations. The liquid to be treated is introduced into the annular gap, primarily from above, and the concentrated liquid is removed at the bottom. The cleaned liquid is discharged between the screen and the wall of the housing. The feature of the invention is that the vibrator is mounted on at least three rubber elements which primarily allow the vibrator to perform a circular horizontal movement.

Abstract: The present invention relates to semiconductor processing. In particular, it relates to a tunable ultrasonic filter and a method of using the same for more effective separation of large particles from slurry. In one embodiment a standing wave is produced in the filter and large particles are accumulated at the nodes of the standing waves while the slurry is flowed out of the filter.

Abstract: The present invention provides a vibratory screening apparatus (1) for use in removing solids from a liquid feed, and a basket (4) therefore. The apparatus comprises a static outer housing (2), and a floating basket vibratable by a vibrator device (10). The basket mounts a stack (7) of screen assemblies (8) provided with respective flow directing trays (9) for receiving filtrates from the screen assemblies. A flow distributor (15) divides the feed into at least first and a second feed streams and directs them onto respective screen assemblies, and receives from the flow directing trays, filtrates from respective screen assemblies.

Abstract: A retention device for use with a filter apparatus having a main frame and an intermediate frame member, and a plurality of parallel filter elements in a filter zone being spaced one from another at a selected distance and forming a filter screen known as a harp screen, is disclosed. The filter screen is mounted to the main frame. The retention device includes a clamp disposed at an intermediate portion of the filter elements for clamping at least a clamped portion of the filter elements to the intermediate frame member, with the arrangement being such that a neutral region is provided adjacent or within the clamped portion of the filter elements, the neutral region being such that the filter elements may be manipulated within that region, and their relative spacing varied, within that region, without affecting spacing between filter elements outside the neutral region.

Abstract: A method and an apparatus for separating dry matter from liquid includes an enclosed separation environment capable of being pressure regulated. Within the enclosed separation environment, a suspension is brought into contact with at least one filter so as to accumulate dry matter on the at least one filter. The filter with the dry matter passes through at least one set of rollers such that liquid is removed from the dry matter on the at least one filter to form a substantially dry filter cake. Thereafter, the substantially dry filter cake is removed from the at least one filter. The above steps are performed in the enclosed separation environment either under vacuum or overpressure. The invention may be used in various fields such as the food industry.

Abstract: Filtering a dispersed phase (e.g. oil) from a continuous liquid (e.g. water) of a dispersion a filter, for filtering a dispersed phase from a continuous liquid of a dispersion, the filter including a substrate having a plurality of apertures each extending directly through the substrate between a first surface and a second surface and a layer of material applied over at least a portion of the first surface, wherein the material rejects the continuous liquid to a greater extent than the dispersed liquid.

Abstract: A horizontal vibratory centrifuge, which includes a slurry separating component; a drive motor; a drive unit for rotating the separating component; a feed pipe for feeding the slurry into the separating component; a product discharge for discharging the solid portion of the slurry from the separating component and a pipe for discharging the fluid portion from the separating component; at least one vibratory motor mounted onto the drive unit; a plurality of connecting rods moveably connecting the drive unit to a torsion bar assembly, the assembly including a plurality of torsion bars, each mounted on a first end to an upper fixed spring clamp and a lower fixed spring clamp, and on a second end to the connecting rods with bearings, so that the vibrations of the low energy vibrating motor is in resonance with the springs so as to provide in part maximum vibration to the vibrating assembly at low energy levels.

Abstract: The invention relates to a grit washer for separating organic pollutants from grit in wastewater treatment plants, said device comprising a container (2) which has a material supply inlet (5), a grit outlet (7), a separating water inlet (6) and a liquid discharging means (10). The container (2) has a vibrating means (8) arranged inside the container (2) in order to separate, while vibrating in cooperation with the supplied separating water, the grit from organic matter. The invention also relates to a device for separating solid matter in flowing liquids in wastewater treatment plants, the device comprising a screening unit (30) which is arrangeable in a duct with flowing liquid, the screening unit (30) having movably arranged discharging means (39) which feed the solid matter up to an unloading portion (35) having a vibrating means (46) which releases the solid matter from the unloading portion (35).

Abstract: A vibration filter that eliminates the problems of polarization, blockage and fouling is disclosed to include a separation membrane for removing solid matter in a fluid, a base, a magnetic field generator controllable to provide a variable magnetic flux, and vibrators made by a magnetostrictive material and arranged in an array on the base and kept in close contact with the separation membrane for vibrating the separation membrane upon generation of a variable magnetic flux by the magnetic field generator.

Abstract: The present invention describes an apparatus (1) for the sieving and fluid separation of a material containing fractions of a solid and fluid, the material being placed on an upper side of at least one sieving element (13), and the apparatus (1) being provided with at least one fluid-flow-generating device (5) for the production of a fluid flow through a portion of the material-carrying sieving element (13). The invention also describes a method of using the apparatus (1).

Abstract: A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean associated filter media to allow substantially continuous filtration of process fluids. The filtration system may be satisfactorily used with process fluids having a relatively high concentrations of solids, particulate and colloidal matter.

Abstract: A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation. A receptacle aids in separation of the more dense material from the fluid medium. The receptacle defined in a part by a respective geometry and a respective shape. An opening extends from the void area to the outer surface to transport the more dense material to the containment zone. An excitation apparatus associated with the receptacle creates a vibration within the receptacle. The centrifuge may further include a valve ring including a valve orifice the valve ring having a first position which blocks the more dense material from exiting the receptacle and a second position that allows the more dense material to move into the containment zone.

Abstract: The invention relates to a method and apparatus for the automatic handling of bag systems in an installation. The method includes the steps of loading at least one bag system having a primary bag containing a body fluid such as blood and a secondary bag into a handling device, wherein the bag system is placed in a position such that no filtering of the body fluid takes place; automatically actuating the handling device so that the bag system is moved to a position wherein filtering occurs; and unloading the bag system from in the handling device when all the filtrate is received in the secondary bag.

Abstract: A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation. A receptacle aids in separation of the more dense material from the fluid medium. The receptacle defined in a part by a respective geometry and a respective shape. An opening extends from the void area to the outer surface to transport the more dense material to the containment zone. An excitation apparatus associated with the receptacle creates a vibration within the receptacle. The centrifuge may further include a valve ring including a valve orifice the valve ring having a first position which blocks the more dense material from exiting the receptacle and a second position that allows the more dense material to move into the containment zone.

Abstract: A filter device according to the present invention comprises: a filter portion having a fluid outlet at its axis, and a fluid inlet in a position away from the axis, in which a fluid containing particles is supplied at a predetermined flow speed from the fluid inlet to cause a swirl, particles are moved outward in a centrifugal state and the fluid from which the particles are separated is discharged from the fluid outlet, and the particles separated by slowing down the swirl are allowed to sink; and a settlement portion in which the particles that settle in the filter portion are allowed to settle. Thus, a fluid containing particles is supplied at a predetermined flow speed to cause a swirl, the particles are separated by a centrifugal force caused by the swirl and allowed to sink and settle, and the fluid from which the particles are separated is discharged. A large amount of particles can be allowed to settle and be reliably removed in a short time with this small-sized and simple device.

Abstract: A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powered to impose on the porous medium an acoustic field that is resonant to the chamber when filled with the fluid. Under the influence of the resonant acoustic field, the porous medium is able to trap particles substantially smaller than the average pore size of the medium. When the acoustic field is deactivated, the flowing fluid flushes the trapped particles from the porous medium and regenerates the medium. A collection circuit for harvesting the particles flushed from the porous medium is disclosed. Aluminum mesh, polyester foam, and unconsolidated glass beads are disclosed as porous media.

Abstract: A method of treating fluid body waste material includes, separating the material into factions, in which the solids content of one faction is increased substantially relative to the originating waste material, while a second faction has an increased liquid content. Material is pumped from a storage facility, passing through a first screen. Retained solid material is removed from the screen while partially cleansed liquid passes to a holding tank. The partially cleansed liquid is then passed through one or more cyclone separators. The output containing larger particles is passed to a second, finer screen with further removal of solids. A further output from the cyclone separator, of substantially clean liquid is fed partly back into the holding tank and partly back into the storage facility. Agitation of the waste material in the storage facility can be provided.

Abstract: Device and process for separation of absorbent/floating material from product mixes by means of float/sink separation with a float/sink separator which exhibits a separator tank filled with a liquid separating medium, in which context there are provided devices for generation of a surface flow in the separating medium, which propel the absorbent/floating material as a floating fraction from a pickup point of the product mix to an output point for the floating fraction, along the surface of the separating medium, at such a speed as to inhibit absorption of the separating medium.

Abstract: A shale shaker or vibratory separator which, in one aspect, has a base, vibration isolation apparatus on the base, a basket, mount apparatus for mounting the basket on the base, and at least one of the base, basket, and the mount apparatus made of, encased in, or coated with composite material which, in certain aspects, is all or part flexible composite material; and methods of using such separators and shakers.

Abstract: A vibratory apparatus for separating a liquid from a liquid-laden solid material. The apparatus includes an inclined trough having a base with a first end and a second elevated with respect to the first end. A deck is attached to the trough base, the deck defining support points positioned above the base spaced from one another by a distance sufficient to support the solid material above the deck, and passages located between the support points to allow liquid to flow to the deck. A vibratory drive is attached to the trough and oriented impart a conveying motion toward the trough second end. Solid material deposited onto the deck is advanced toward the second end by the conveying motion while the liquid flows along the trough base toward the first end under gravity.

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 flow diverter and a vacuum blower for vibrating screen separator assembly. The flow diverter decelerates and increases the exposed surface of materials. The exhaust blower removes vapors from the materials.

Abstract: The invention is related to mining industry, namely to devices for dispersion of solid minerals in particular quartz sands and associated minerals.

Abstract: In a particularly noise-free and vibration-free operating precoated filter for filtering for example cooling lubricating means, a filter candle 12 surrounding a riser channel 16 is mounted by means of a riser tube 15 in a separating plate 5 in an axially moveable manner. A filter cake adhering to the outside of the filter candle 12 is loosened in such a manner that for example a disk-shaped rotary body 40 comprises a shoulder 42 between the track end 43 and the track start 44 along its track 41.

Abstract: The invention relates to a method for making the drying of materials, particularly finely divided materials, more effective, in which method, of a slurry containing liquid and solids there is made a filter cake (2,12,22) onto the surface of the filter medium (1,11,21). According to the invention, the filter cake (2,12,22) and the oscillator (6,15,25) are arranged, in relation to each other, so that in between the filter cake (2,12,22) and the oscillator (6,15,25), there is generated an acoustic field by virtue of a mechanical contact between the filter cake (2,12,22) and the oscillator (6,15,25) or a structural element (7,16,26) connected to the oscillator.

Abstract: An improved screen basket for use with a centrifuge includes two adjoining screen sections. The first screen section is formed from a wear resistant material and is located proximate to the point at which slurry is introduced into the basket. The length of the first screen section is chosen so that the majority of potential wear caused by the abrasive slurry occurs within the first section of the basket. The second screen section is preferably formed from less expensive materials, such as steel wedge wire. The second screen section smoothly joins the first screen section and provides for further dewatering or separation of the accelerated slurry so that a dry cake is produced by the centrifuge.

Abstract: A self-regenerating filter unit having a housing which carries an ultrasonic transducer periodically energizable to dislodge caked solids from a filter element in the housing. The removed solids collect in a storage zone where they are periodically removed.

Abstract: A filter having a device for countering the clogging of the filter for a fluid, in particular a liquid, includes a filtering element arranged in a filter cavity bounded by an outer casing, an ultrasound emitter coupled into the cavity, in the direction of the filtering element, in order to prevent the filtering element from becoming clogged during operation of the filter.

Abstract: The invention relates to a method for making the drying finely divided materials, more effective in a suction drier provided with a fine porous suction surface, where the radii of the fine pores of the suction surface are essentially within the range of 0.5-2 micrometers, and in which method, of a slurry containing liquid and solids there is made a filter cake (2,12,22) onto a fine porous liquid suction surface constituting the filter surface of the filter medium (1,11,21), According to the invention, the filter cake (2,12,22) and an oscillator (6,15,25) are arranged, in relation to each other, so that in between the filter cake (2,12,22) and the oscillator (6,15,25), there is generated an acoustic field by virtue of a mechanical contact between the filter cake (2,12,22) and the oscillator (6,15,25) or a structural element (7,16,26) connected to the oscillator.

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: A multi-functional linear motion shaker includes a rectangular outer support frame with a tank, often referred to as a "possum belly", for receiving the incoming drilling fluid flow. A set of adjustable louvers and a tray is positioned on the side of the tank. The adjustable louvers and tray serve to screen out the larger and stickier drill cuttings or solids. A vibrating deck assembly is positioned within the outer support frame adjacent the tank and tray assembly. The vibrating deck assembly is of a double deck design whose upper and lower decks include cross members to support the mud screens. The upper and lower decks are vertically spaced apart and connected together into one unit by vertical structural members. A moveable plate is positioned on the upper deck adjacent the adjustable louvers and tray. This moveable plate can be positioned to direct drilling fluid flow to the upper deck or repositioned to redirect fluid flow to the lower deck and bypass the upper deck.

Abstract: Method and apparatus are provided for separating coarse and ultrafine solids from a liquid stream to produce a substantially dry solids discharge and a clarified liquid. Apparatus is provided comprising a combination of a settling tank, a plurality of filter screens spaced along an endless link-chain conveyor, a screen vibrator and directed air streams. In operation, coarse solids settle preferentially to the tank bottom. Ultrafines solids remain in suspension. Relatively coarse filter screens are conveyed from a point outside the tank to traverse a prolonged path through the liquid. Ultrafine solids are captured on the screens, by filtering the liquid through an ever finer build-up of filter cake. The relatively large number of passes of the screens through the liquid provides effective filtering of suspended solids. Further, the screens dredge settled solids from the tank bottom.

Abstract: A new type of filter assembly which can be employed to retrofit an existing shaker or which can be built as an integral part of a new shaker. The assembly is comprised of a series of compartments arranged in cascading fashion within the shaker. Each compartment is provided with a removable hookless corrugated filter having no additional support backing which secures between a perforated bottom of the compartment and a removable and reclosable lid. Each filter is sealed and supported from below, at its front and rear edges and along its sides within its respective compartment upon removable corrugated lips provided in each of the compartments. Each lid is provided with a plurality of downwardly extending parallel blades which coincide with and engage valleys of the corrugated filters to seal and support the filters within their respective compartments when the lids are closed.

Abstract: A shale shaker has been developed which, in one aspect, has one or more upper screens and one or more lower screens with an upper screen at a discharge end of the shale shaker and a lower screen disposed to receive material discharged from a discharge end of one of the upper screens. In one aspect a portion of a lower screen underlies the discharge end of the upper screen. In another aspect a solid flowback pan prevents material falling through the upper screen(s) from falling onto the lower screen(s); and, in another aspect, the pan prevents material on a top of the lower screen(s) from falling into a bottom sump of the shale shaker which receives material which has fallen through the screen(s).

Abstract: A vibrating filter has a housing, a separation member, a filter, and a vibrator. The housing defines an outlet chamber and a filter chamber, and the separation member secures within the housing to separate the outlet chamber and the filter chamber. The filter secures within the filter chamber. The filter has an outlet matable with at least one hole in the separation member so that the filter is in fluid communication with the outlet chamber. The vibrator rigidly secures solely to the separation member for vibrating the separation member, thereby vibrating the filter. The vibrating filter also preferably has a cover for the outlet chamber and a vibration isolating structure secured between the separation member and the cover for dampening vibration to the cover which is imparted to the separation member by the vibrator.