Abstract: A mud cleaning system for recovering barite from drilling mud coming from an oil well, the mud being made up essentially of barite particles having a specific gravity of 4.2 or more, and a particle size mostly finer than 200 mesh, drill cuttings having a specific gravity of 2-3, and varying particle sizes ranging from about 200 mesh to 1/2 inch or more, and water. This system includes a first sieve bend (32), a second screen member (10) in series therewith, and a spiral separator (54), in series with the screens. The sieve bend is provided with a vibrator (18, 20), and water sprays (16, 34) act in conjunction with the sieve bend and the second screen to aid in the separation. The slurry leaving the spiral separator is screened to remove the ultra fine particles and the water is recycled. The system inherently washes potentially environmentally hazardous substances off the drill cuttings prior to their discharge from the system.

Abstract: In vertical vessels, particularly continuous pulp digesters, fibrous material suspended in liquid passes downwardly past screens through which treatment liquid is withdrawn. The screens are reciprocated vertically up and down utilizing a piston and cylinder assembly, operatively connected by a two-way valve to a source of fluid under pressure or a vent. The piston and screen are connected by a universal joint, and the screen is positively guided during movement. The piston is vertically above the screen and the screen moves downwardly under pressure from the pump, and returns upwardly, under the influence of interior digester pressure, during normal digester operation.

Abstract: A filter press for the thickening of cellulose pulp or sludge in which the filter press is furnished with a feedbox to lead the sludge suspension to the wire. In order to increase the capacity of filter presses or the like, the sludge to be dried can be fed through a feedbox in accordance with the invention, in which box there is at least one surface penetrating the liquid to facilitate thickening of the sludge suspension before it is lead to the filter press wire.

Abstract: A separator for magnetical removal of solid particles from fluid media comprises a flow chamber filled with a rod-type ferromagnetic orienting packing, and a magnetic system for magnetizing the packing. The packing rods are arranged along the flow of the medium being purified and contact each other over lateral surfaces thereof.

Abstract: Liquid dispersions may be filtered, with a minimum of stopage, to remove coagulum with a pan assembly for a circular vibratory separator comprising a hollow cylindrical frame, having therein a discharge vertically spaced from the bottom of the frame, and a helical ramp commencing substantially in the bottom plane of the frame and travelling about the interior wall of the frame in a circular direction terminating in front of and substantially in the plane of said discharge.

Abstract: The washing efficiency of removal of cooking and bleaching chemicals from cellulose paper pulp on horizontal belt washing filters is improved by disrupting the filter mat adjacent the belt intermediately of soft, displacement wash liquor applications to the filter mat topside. The objective may be achieved by directing a line of low volume, high pressure jets of filtrate or wash liquor against the belt underside. Alternatively, sonicly vibrated foils extended transversely of and adjacent to the belt are effective to disrupt the filler mat pursuant to the invention objective.

Abstract: The present invention relates to a system and a method of extracting liquid from a humid mass by compressing same. The system comprises a conduit of linear, circular or other shape through which the humid mass is displaced. The conduit is of rectangular cross-section, which cross-section can be constant or variable. Further, the conduit has perforated side walls along at least a liquid extraction working section of the conduit. The system further comprises elements which cause an axial pressure at the interior of the humid mass as well as a mechanism to displace at least one of the perforated side walls to convey the humid mass along the working section of the conduit in such a way as to generate between the interior surface of the perforated side walls and the humid mass a dynamic friction force which defines a pressure zone which is less than the axial pressure created by the pressure creating elements.

Abstract: A diffusion washer and/or thickener assembly is provided that is greatly simplified. A number of withdrawal screens and fluid introducing structures are provided supported by spider arms which comprise conduits for introduction of liquid into and withdrawal of liquid from an elongated upright hollow vessel in which the assembly is disposed. The conduit means, with attached screen structures, is reciprocated up and down by a single linear actuator located preferably above the vessel and within the cross-sectional area thereof so that the wall of the vessel need not be penetrated by the conduits. The screens and fluid introducing structures remain stationary with respect to each other during reciprocation. A number of wiper blades, which may be operated by a single linear actuator, are provided at the top of the vessel for moving upwardly flowing pulp into withdrawal conduits surrounding the vessel periphery.

Abstract: A ship for treating a coal slurry comprising a pair of opposed trays disposed in the vicinity of the upper deck for causing the coal slurry supplied thereto to flow forward and delivering the slurry, a slanting dewatering screen disposed below each of the trays for dewatering the coal slurry delivered from the tray to separate a particulate coal fraction having relatively large particle sizes, and conveyors for transporting to a specified position on the upper deck the particulate coal fraction dewatered and falling off the screen.

Abstract: A pressure filter utilizes a vibratory impactor for imparting vertically directed high frequency shock waves to a rigid manifold from which a plurality of rigid filter tubes incorporate a fine mesh sleeve held tightly by spaced elastic bands against a unitary plastic core having inner and outer tubes interconnected by integral web portions.

Abstract: An apparatus for filtering solids suspended in a slurry has a housing divided by a horizontal partition into a lower filtrand chamber and an upper filtrate compartment, the partition serving as a vibratile suspension for a multiplicity of filter tubes depending therefrom into the filtrand compartment. An impactor disposed above the housing top has a vertical plunger, coupled with the partition, which is surrounded by or forms a discharge duct with a lower end closely overlying the bottom of a depression formed in the partition; this duct has an outlet opening above the housing top through which effluent present in the filtrate compartment is expelled by the pressure of incoming slurry in a working phase and by the pressure of a scavenger gas such as air in a purging phase.

Abstract: A sieve screen deck, the screen of which comprises a plurality of horizontal wedge wires connected to an array of backing bars running longitudinally of the screen parallel to its fall line. The screen is connected to a frame at its two ends, at least one end being connected by resilient means such that the screen may vibrate and flex under the influence of rapping or vibrating means. Side walls are provided along sides of the sieve screen, to prevent material flowing over sides of the screen, are also formed of a resilient material in order that they do not substantially impede the ability of the sieve screen to vibrate and flex under the influence of the rapping or vibrating means.

Abstract: Vibratory screening apparatus wherein a filtrating cradle incorporating screens is vibrated on a machine base, and wherein a bottom screen (56) in said cradle (12) can be withdrawn between an upper support (64) on said cradle and an intermediate support (54) on a bottom screen frame (52), which frame is also withdrawable from the machine on a lower support (62) on the cradle, hydraulic expander means (60) being provided to act on the lower support so that, in the inserted position of the bottom screen frame, the opposed sides of the bottom screen can be clamped between the upper and intermediate supports, locking the bottom screen and its support in position.

Abstract: A vibratory screening machine as described separating solid particles from liquid in which a fine mesh screen (30) includes an inclined region extending upwardly to a discharge edge (34) over which solid material (36) separated by filtration can pass. Vibration of the screen (30) causes the solid particulate material to move towards the discharge edge (34).The screen (30) forms the base of a reservoir having sides (10) and a weir or dam (46) at the opposite end to the discharge edge (34) and is slidable in and out to provide for cleaning and/or replacement.A suspension of liquid and solid particulate material is supplied to the machine along a pipeline (28) and is discharged onto the rear end of the screen (30) from a discharge head (24).One or more intermediate screens of similar design may be located above the main vibrating screen and above one another and the suspension of liquid and solid material discharged onto each of the screens overflows onto the rear end of the screen immediately therebelow.

Abstract: The present invention relates to a hoist to be used in combination with an apparatus for filtering molten metal. The hoist of the present invention is used both to position the filtering vessel, and to back-flushing metal through the filter element. The present invention also relates to the method of back-flushing. Back-flushing serves to dislodge particulate and thereby clean the filter element. When the filtering vessel is submerged in a molten metal bath back flushing serves to aid the exchange of the molten metal interior to the filtering vessel with the molten metal exterior to the filtering vessel, and in so doing aids in minimizing the temperature difference between molten metal interior and exterior to the molten metal filtering vessel. Periodic back-flushing significantly extends the life of the molten metal filtering apparatus.

Abstract: This fuel filter device serves to eliminate the need for priming a fuel pump and bleed-air from fuel injectors, in the event that the fuel storage tank runs dry, or fuel filters are replaced on a fuel consuming device, which employs a fuel injecting system. Primarily, the device includes a housing, having a floating filter on its interior, which rides on a perforated fuel valve rod. The device also includes a floating ball valve attached to the armature of a solenoid, which is secured to a fuel output fitting in the bottom wall of the housing, and in the event of water in the fuel, the solenoid is actuated, and its armature will pull the ball valve down for positive shut-off of fuel flow.

Abstract: An apparatus for collecting, transporting and dewatering animal waste prior to its introduction into a press for separating the solids therein from the remaining liquid waste.

Abstract: An apparatus and method are provided for treating flowing suspensions, extracting liquid from the suspensions and, if desired, introducing a treatment liquid into the flowing suspensions. Suspension flows in an elongated container from an inlet to an outlet in a first direction, and a screen surface is mounted within the container for screening a portion of the liquid from the suspension. The screen body is elongated in the direction of elongation of the container and defines a screen cavity volume within it, the volume tapering inwardly in the first direction. A baffle is disposed within the screen cavity volume. During movement of the screen in a second direction, opposite the first direction, at a higher speed, backflushing of the screen takes place, substantially evenly over the whole of the screen surface.

Abstract: A device for filtering a liquid, particularly molten polymer, removes incompletely molten polymer, foreign matter, aggregates of various additives and the like from the molten polymer prior to further processing of the liquid such as extrusion through a spinneret plate. The device comprises a housing provided with a liquid inlet and a liquid outlet and, positioned between the inlet and the outlet, a filter pack built up of a number of filtering disks and supporting disks. The disks are so arranged the liquid to be filtered is caused to flow between a center portion and an outer surface of the filter pack. On the filter pack there is placed a piston for applying a compressive pressure to the pack. The piston is displaced and acts to compress the filter pack on a liquid supply side under the influence of the pressure of the liquid to be filtered.

Abstract: An improved method and apparatus for dewatering particulate coal is disclosed. The apparatus includes a trough having a sump extending longitudinally at the bottom thereof. The trough is mounted on coil springs and an eccentric weight vibratory drive unit acts to convey the mixture of coal and water down said trough. The sump is designed so that a portion of the coal passing down the trough circulates through said sump. The depth of the sump is substantially greater than the capillary rise of water, and the coal thus acts to draw capillary water from the coal supported above in the trough. The coal slowly circulates through the sump in order to avoid the build up of fines therein which would clog the drainage paths through the sump. The sump includes an underlying screen to allow the water to drain therefrom.

Abstract: A vibratory screening machine as described separating solid particles from liquid in which a fine mesh screen (30) includes an inclined region extending upwardly to a discharge edge (34) over which solid material (36) separated by filtration can pass. Vibration of the screen (30) causes the solid particulate material to move towards the discharge edge (34).The screen (30) forms the base of a reservoir having sides (10) and a weir or dam (46) at the opposite end to the discharged edge (34).A suspension of liquid and solid particulate material is supplied to the machine along a pipeline (28) and is discharged onto the rear end of the screen (30) from a discharge head (24).One or more intermediate screens of a similar design are located above the main vibrating screen and above one another and the suspension of liquid and solid material discharged onto the first screen overflows onto the rear end of the screen immediately therebelow. Trays (68) and (70) are provided to catch liquid draining through.

Abstract: A hydraulic system including a working-liquid pressure line and drain line communicated accordingly with an inlet and outlet of a housing into which a porous piezoelectric ceramic filtering element, such as barium titanate, is placed, connected to a generator of electric oscillations and separates said inlet and outlet.

Abstract: A machine lubrication system including an oil-lubricant pressure source communicated with a reservoir means and a means for maintaining the working properties of the lubricant, wherein the latter means constitutes a porous piezoelectric ceramic filtering element, such as barium titanate, connected to a generator of electric oscillations and placed into a housing which inlet and outlet are separated by said element.

Abstract: A method for concentrating and dewatering fine-grained materials wherein the material is delivered by a feeder to the central portion of a pressing chamber in an arcuately shaped housing. A profiled sieve is mounted in the housing. An electric motor imparts a vertical-elliptical oscillatory motion to the housing at a frequency up to 160 Hz and at an amplitude from up to 5 mm.An apparatus for performing the aforementioned method, comprising a frame on which an electric motor is secured. A housing is supported by springs on the frame. The housing is arcuately shaped and a sieve extends along the whole length of the arcuately shaped housing. The sieve divides the housing into a pressing chamber and a dewatering chamber. In the bottom portion of the dewatering chamber there is provided a pipe for discharging liquid from the dewatering chamber. In the axes of the springs supporting the housing there are provided regulator bolts for limiting the amplitude of the vibratory motion of the housing.

Abstract: A device and method for separating particulate material from earth drilling fluids is disclosed, wherein the earth drilling fluids containing such particulate material is introduced into a container. A major portion of the particulate material separates out of the earth drilling fluid, and the fluid then passes over a baffle and through a screen, with the movement past the screen being such, combined with the screen orientation, to provide a screen which is somewhat self-cleaning in nature. The screen is periodically scraped by carrying members, and is urged against the carrying members so that the initial contact of the carrying members with the screen causes vibrations which improve the self-cleaning characteristics of the screen.The particulate material which settles out of the drilling fluid, and the particulate material which is screened out of the drilling fluid, is collected in the bottom of the container and is removed therefrom by the carrying members up an inclined wall to a discharge point.

Abstract: Filtration apparatus in which the filter medium is mounted at a slope with respect to the horizontal and in which there are means to vibrate the medium in a horizontal direction to assist the cleaning of the medium. A single chamber may contain many sheets of media, one version of the apparatus comprises a plurality of separate modular structures each containing at least one filter medium and in another version modular structures are so designed that they assemble into a stack and when so assembled form the necessary conduits by which each filter medium communicates with the necessary inlets and outlets for the relevant materials.

Abstract: In a sifting machine having a driven vibratory screen assembly comprising a so-called sifting basket of which a screen forms the base, the screen is releasably located by a plurality of spaced bars which extend across the screen and project at their ends through side walls of the basket. The projecting end portions of the bars are bolted to external supports on the side walls, and the bars carry spring-loaded plungers which press the frame of the screen against internal ledges on the side walls.

Abstract: Extraction apparatus wherein solid and liquid phases are subjected to vibro-acoustical action in order to intensify the extraction process. The apparatus includes an enclosure forming a working perforated vessel, spring means mounting such vessel for vibratory movement, a vibrator mounted on the vessel to vibrate it, two laterally displaced feeding openings for receiving, respectively, solid particulate material and liquid, two spaced discharge outlets on the cell for discharging, respectively, solid material and liquid.

Abstract: In a substantially conventional system for receiving and conveying a fluid suspension of material there is an endless porous belt screen on which the material is spread and a tray beneath the belt to catch liquid which passes through the belt. A suction box beneath the belt near the area of deposition draws off some liquid. Superimposed on the conventional system is a resonant frequency energy source in the form of a roll assembly consisting in part of an outer shell in the form of an exterior cylindrical roll supported on shock mounts and in constant engagement with the underside of the belt. The exterior cylindrical roll is driven at a circumferential speed equal to the linear speed of travel of the belt.

Abstract: Apparatus for producing various construct materials and comprises a vertical container converging from the top down and a vibrator. The container has pipes for feeding a suspension thereinto and discharging a thickened suspension, respectively, and filtering side walls for the passage of filtrate. The vibrator is mounted outside the container and has vibration transmitting planes extending substantially along the filtering side walls of the container in such a manner that they cooperate, during operation of the vibrator, with the filtering side walls to impart vibrations thereto. This facilitates continuous dehydration of the suspension without formation of cake on the filtering surface, whereby a high degree of filtration and a greater filtering rate are ensured.

Abstract: A method and apparatus for recovering embryos from embryonated eggs wherein the egg is cracked open the shell discarded and the contents dropped onto a continuously vibrating screen which separates the embryo from the yolk sac and accompanying fluid. This associated material, which is less cohesive than the embryo, passes through the screen. The screen itself is tilted at a compound angle from the horizontal and its vibrating action causes the embryos to move along the upper surface of the screen toward a discharge chute located at the lower corner of the screen.

Abstract: A self-cleaning filter and vortexer is provided in which a filter rotates over the clean fluid outlet port of a vortexer cannister in the direction of the flow of fluid into the tangential inlet port of the vortexer. The peripheral velocity of a freely rotating filter will approximate the flow velocity of the fluid into the tangential inlet port to enhance the centrifugal acceleration effect of the vortexer and the dynamic cleaning of the filter medium. This acceleration enhances centrifugal separation of the heavier particulates in the vortexer and enhances the dynamic cleaning of the fines and other particulates from the filter medium. The drive mechanism for rotating the filter may be designed to be uneven so as to shake the filter medium as it rotates. The flow of fluid will pass thru the filter medium and be exhausted as a cleaned fluid into the outlet port of the vortexer cannister.

Abstract: A vibrating centrifuge provided with a rotary support body has mounted thereon a basket receiving the granular material to be dehydrated and is operatively connected with a vibrating mechanism and also with a rotary drive, as well as thrust spring elements which yieldably connect the rotary drive with the support body. These thrust spring elements are arranged in an annular space between the outer circumference of said support body and the inner circumference of a drive sleeve forming a part of the rotary drive, and variable adjusting member engaging said thrust spring elements are employed for carrying the radial height of said thrust spring elements.

Abstract: A liquid separating screen member is continuously oscillated, with an amplitude larger than the apertures in the screen member face, from a middle position with substantially the same speed in first and second opposite directions. The screen member separates liquid from the suspension of finely comminuted fiber material and the liquid, which suspension is flowing in the first direction. The oscillation prevents fiber mat build-up on the screen face during movement of the screen face either in the first or the second direction. The amplitude of oscillation may be about one-tenth of an inch, and the frequency of oscillations may be about 6 cycles/sec. with the average speed of oscillation of the screen member in both the first and second directions about 2.4 inches per second, and the maximum speed in both directions about 3.8 inches per second. The frequency of oscillation, which is below the natural frequency of the screen member and associated structures, is about at least two cycles per second.

Abstract: Apparatus for the separation of particulate solids from a liquid and comprising a container, a first declivous draining screen located within the container to separate upper and lower regions of the container, means including a subsidiary declivous draining screen steeper than the first screen for feeding a mixture of particulate solids and liquids on to the upper end of the first screen, baffles on the underside of the first screen to discourage adherence of liquid beneath the first screen, a weir disposed at the lower end of the first screen for allowing the controlled passage of solids thereover, means for withdrawing liquid from the lower region of the container, and means for vibrating the container to move solids along the first screen and over the weir.

Abstract: A method and apparatus for the thickening of a suspension of comminuted fiber material and liquid. A reciprocal screen assembly having a variable volume interior chamber is mounted for movement along the axis of a container through which suspension to be dewatered flows. Mechanical apparatus, such as a hydraulic cylinder actuated rod, moves the screen assembly in either the direction of flow of suspension in the container, or in the direction opposite thereto, and the screen assembly is relatively rotatable with respect to the container. During movement of the screen assembly in the direction of flow of the suspension (at about the same velocity as the suspension flow), liquid passes through the screen assembly into the interior chamber, and is expelled from the container. The screen assembly is moved more quickly in the direction opposite to the direction of suspension flow, and the variable volume of the interior chamber thereof decreases quickly so that backflushing of the screen assembly is effected.

Abstract: Extraction apparatus wherein solid and liquid phases are subjected to vibro-acoustical action in order to intensify the extraction process. The apparatus includes an enclosure forming a working cell, spring means mounting such cell for vibratory movement, a vibrator mounted on the cell to vibrate, two laterally displaced feeding openings at the top of the cell for receiving, respectively, solid particulate material and liquid, two laterally spaced discharge outlets on the cell for discharging, respectively, solid material and liquid, and a screen mounted inside the cellacross the liquid discharge opening.

Abstract: A method and apparatus for dewatering a suspension of comminuted fiber material and liquid. A suspension is passed in a given direction in a container of generally circular cross-section having a hydraulic piston mounted generally concentrically therein. There are no movable components extending between the piston and the walls of the container in which it is disposed, therefore leakage from the container is minimized. The piston has screens for separating liquid from the suspension associated therewith, and is movable in the same direction as the suspension flow during removal of some liquid from the suspension, and is movable in a direction opposite to the direction of fluid flow to facilitate cleaning of the screens and to return the piston to a position wherein it can move in the direction of flow again.

Abstract: A vibratory coolant strainer for a cutting tool coolant supply system for a machine tool. A strainer screen assembly is rotatably mounted on a coolant system fixed supply pipe. A yoke is attached to the upper section of the strainer screen assembly and it is rapidly vibrated by a plural lobe cam which imparts a rapid vibratory or rotary oscillating motion to the strainer screen assembly so as to free it of metal chips and other dirt. The plural lobe cam is secured to a rotatably mounted shaft which is operatively supported in a housing attached to the supply pipe. The cam shaft may be driven by a suitable motor, or a belt or chain from a power source which is internal or external of the machine tool.

Abstract: An improved method for effective removal of collected materials, such as dust and fly ash, from the collecting plates of electrostatic precipitators and the like which induces simultaneous axial and transverse vibratory motions in each collecting plate with substantial coincidence of the maximum accelerations associated with the two motions. A natural frequency of the axial vibration 2n times the natural frequency of the transverse vibration for values of n in the range of 1 to 5 is most advantageous for material removal.

Abstract: A new and improved nonadjustable self-cleaning dewatering screen panel assembly suited to vibratory dewatering of fluid slurries containing fine particulate solid material is comprised of a rigid frame member and a substantially planar screen panel mounted within the frame and secured thereto under tension in both planar directions. The screen panel is a unitary one piece elastomeric sheet consisting of a plurality of pulsator portions and integral bordering stabilizer portions. The pulsator portions of the elastomeric panel are comprised of a multitude of substantially identical diaphram elements arranged in intimate, aligned and confronting relationship so as to present a smooth top screening surface.

Abstract: The invention relates to a method for separation of liquids from a mixture of solid matter and liquids by supplying said mixture to a separation member which is permeable by liquid, simultaneously applying a vacuum to the underside of said separation member, and subjecting said separation member to vibrations. The invention also includes a device for carrying out said method.

Abstract: A vertical vibratory liquid filter comprising a vertical shell with a manifold for feeding in the filtered suspension, a cake-discharge hole located in the lower part of said shell, and filter elements secured on a drain pipe which is set nearly vertical and communicates with the filtrate-discharge pipe connection. The filtering surfaces of the filter elements are inclined towards the discharge hole and their lower edges are located above the discharge hole. The filter elements interact with a vibrator which sets them in vibration for the removal of cake.

Abstract: Impacting devices are provided to strike the sway frame which supports the filtering bags in a bag house. The impacting devices each include a stationarily-mounted bracket, an externally-threaded sleeve that is adjustably received in the bracket, a bolt-like striker member slidable in the sleeve and a coil spring which biases the striker member to an extended position relative to the sleeve.

Abstract: A screening apparatus comprising a water receptacle, a screen frame mounted on the water receptacle with a screen covering the opening of the water receptacle, a sprinkler for sprinkling water into the screen frame and a vibrator for expanding and contracting air within the water receptacle to thereby vibrate the screen.