Abstract: A method and apparatus for rejuvenating oil well drilling mud is provided by an endless filter which is supported by a pair of spaced driven drums; drilling mud is distributed onto a moving flight of the filter at spaced locations so as to provide layers of the drilling mud on the filter. Passage of the drilling mud through the filter is assisted by spraying the drilling mud with drilling mud which has passed through the system (filtrate) and by applying suction to the underside of the filter. The drilling mud, after passing through the filter is degassed in a second stage degasser. The filter is cleaned by a solution spray, and by back washing with air and either water or diesel oil.

Abstract: In a belt press of the type used to dewater heavy slurries, an improved belt drive system is provided. The upper belt is driven by at least two rollers, one of which is situated in the dewatering section wherein the upper and lower belts are squeezed and traveling together. The improved drive arrangement provides a more uniformly increasing tension in the belt as it passes through the dewatering section than in such presses heretofore. Further because the lower belt is at least partially driven by its frictional engagement with the upper belt, through the sandwiched slurry, the synchronization of the belt speeds is improved. Further improved control of the belt press performance is provided by means for sensing the speeds of the belts and responsive means for regulating the belt tensioning systems accordingly.

Abstract: A horizontal belt filter with incremental belt advance in which an endless belt is trained about a plurality of idler rollers to pass through an upper run which includes a filter section and a lower return run. The belt passes over only idler rollers. To index the belt for incremental advance through the filter section, a pair of idler rollers on a common shiftable frame are rapidly simultaneously shifted while the belt in the return run is braked against movement. The braking is accomplished by a pinch bar that presses against an idler roller with the belt between the bar and roller. After shifting, the belt is reset by slow retraction of the shiftable frame. All shifting of the frame is done by hydraulic rams. To assist in incremental belt advance, an air cushion may be introduced under the belt in the filter section. For feed distribution, and stage separation, inflatable dams are provided above the belt in the filtering section.

Abstract: Disclosed is a plow assembly adapted for use with an endless conveyor type filtering device. The assembly comprises an elongated support member and at least one plow depending therefrom. The plow comprises a shaft affixed to the support member, a plow body having a central bore through which the shaft partially extends, the body being capable of rotary movement on the shaft, and a stop retaining the plow body on the shaft.

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: Disclosed is a filtering device comprising an endless perforate conveyor belt adapted to carry a liquid-containing material and extract liquid from the material through the belt, and a plow assembly for disrupting the material carried by the belt. The plow assembly comprises a generally horizontally positioned cross-member extending across the width of the belt, the cross-member supporting at least one plow such that the plow is capable of contacting the material carried by the belt, the cross-member is mounted adjacent its ends on slide means that enable the cross-member to be raised and lowered with respect to the perforate belt. The device further includes selectively actuatable member for raising and lowering the cross-member with respect to the belt to thereby move the plows into and out of material contacting position.

Abstract: An apparatus for continuously removing waste materials from a water stream. The apparatus includes a rotating screen assembly formed by a plurality of articulated "L"-shaped links that form separate, laterally spaced closed loops. The space between the loops of links defines the maximum size of material that can pass through the apparatus without being removed from the stream. The respective truncate portions of the "L"-shaped links facilitate the lifting of the debris from the stream. The screen assembly is rotated by motor-driven sprocket segments that are positioned at the discharge end of the apparatus. These segments substantially occupy the spaces between the links when the links travel past the segments, and the occupation of the spaces by the segments displaces the waste materials from the spaces and dislodges the materials from the links as well so that the materials may fall under the influence of gravity to a receptacle.

Abstract: A horizontal endless belt vacuum filter comprises an endless belt pierced, in its central part, with holes moving above the upper opening of a longitudinal vacuum and extending beneath the upper side of the conveyor belt. An endless filtering medium passes over guide rollers and is applied on the upper side of the conveyor belt, in order to receive the mass to be filtered. The vacuum box is mounted to pivot, as a whole, about a longitudinal axis offset laterally on one side of the conveyor belt. This vacuum box is borne by the inner ends of transverse bars which are articulated on horizontally aligned bearings materializing the pivot axis and which bear, at their outer ends, a manifold. This manifold is connected on the one hand to the vacuum box, via at least one connecting pipe, and on the other hand to the source of vacuum, by at least one dismountable coupling member.

Abstract: A self-contained sewage waste disposal system including a housing structure and a toilet bowl adapted to receive human waste and fluid for diluting the waste, transporting the waste and rinsing the bowl. A removable filter cassette is in the housing in communication with the toilet bowl. The bowl is flushed and the contents are dumped into the filter cassette and the bowl is subsequently refilled. Filters in the cassette separate the coarse and fine particles of solid material from the fluid received from the bowl. The solid material is stored in the cassette in a compact manner for subsequent disposal upon removal of the cassette. Fine filtering and decoloring is accomplished by a carbon canister. A reservoir is provided for storage of fluid after removal of solid material therefrom in the cassette.

Abstract: A portable, self-contained skimming apparatus having a rotatable drive wheel and a rotatable idler star wheel disposed in a spaced apart relationship. An endless belt is extended over the rotatable drive wheel and the rotatable idler star wheel, a portion of the endless belt descends downwardly into the liquid to be skimmed. One or more scraping devices are provided between the rotatable idler wheel and the rotatable drive wheel for removing fluid from the endless belt. A pressure roller is provided to bias a portion of the endless belt into engagement with the rotatable drive wheel so that the rotatable drive wheel may drive the endless belt. A collector is provided below the one or more scraping devices so as to collect fluid removed from the endless belt.

Abstract: The invention is concerned with the clarification of waters that contain usable sludge, fibres or equivalent. The objective is to recover the usable material, e.g., as fuel, and at the same time to prevent pollution of waters. According to the invention, the separation of the solids, such as fibres and any other utilizable material, from the water takes place so that the water containing solid material is fed into or onto a mobile and utilizable layer of material placed on a perforated moving base, e.g. a wire-bottom conveyor (5), so that this material layer functions as a filter.The invention is in particular suitable for the wood processing industry, wherein the water coming from the barking drum (1) is passed into a clarifier tank (7), from which the water containing fibres is pumped onto a layer of bark material carried on a wire-bottom conveyor (5), whereby the bark layer filters the water passing through the bark layer.

Abstract: A dual-belt method and apparatus for dewatering a water laden cake of material through the use of multiple primary dewatering rolls is disclosed. A pair of porous belts containing filter cake disposed between the belts are wrapped around a first and second primary roll so that the belts circumscribe more than a 180.degree. arc of each roll. The pressure applied to the belts, that is, to the filter cake, is greater on the second roll than on the first roll.

Abstract: In an apparatus for dewatering water-containing materials, endless sieve belts (1,2) are passed over rolls (8) bearingly supported within substantially mutually parallel frames (7, 11) one of which is movable in direction to the other and is additionally shiftable in a substantially parallel relation to the other and thus transversely to the direction of said adjusting movement and can be fixed in its position. For facilitating the coordination of said adjusting movement and said shifting movement, a gate-type guide (10) forming abutments is connected with one frame (7) and has its gate (12) shaped like a U having legs (13, 14) of different length, retaining bolts or, respectively, pins (26) of the other frame (11) engaging said gate (12).

Abstract: An endless moving filter belt of fine mesh, woven polymeric fibers is provided through which is passed a liquid containing particles, such as from an oil cooking bath. The particles are filtered from the oil bath, and deposited on the belt. The particles are then continuously scraped off the filter belt and onto an endless moving discharge belt where they are dried and carried to waste. The filter belt is continuously flushed by hot, filtered recycle oil.The system also may be used for filtering sewage, in water clean-up, for separating water and metal particles from milling machines, etc.

Abstract: In the treatment of a zeolite suspension to separate solids from the mother and/or washing liquor, a vibrator is used in the suction drying zone of a vacuum filter in order to partially liquefy the filter cake material through the introduction of shear forces into the solidified filter cake, so that further separation of the pure liquid phase can take place in the suction drying zone of the vacuum filter.

Abstract: A method and device is disclosed for expelling liquid by squeezing of masses, having great liquid content and particularly highly re-absorbing masses, most particularly peat, said method comprising the steps of squeezing the mass between endless filter cloths running in a winding path around a plurality of press rollers acting on said filter cloths only and having progressively decreasing diameter and subjecting the mass to a more and more increasing squeeze pressure. According to the invention the filter cloths run from one press roller directly onto the subsequent roller in order to make the mass between said cloths subject to an uninterruptedly increasing squeeze pressure.

Abstract: A filter press having a main press with an after-pressing device spaced from the outlet end of the main press which device carries out the final pressing and is composed of at least two press roll pairs (1,2), made up of rolls (3,4,5,6) between which the wires (7,8) belonging to the main press pass with the pulp (9) being filter pressed interposed between the wires and pressed by action of a pressing force (F) directed against the topside rollers (3,5) of the press roll pairs and produced by a force applicator such as a pressure cylinder (10). The pressure ratio (F.sub.1 /F.sub.2) between the topside rollers (3,4) and the bottom side rollers (5,6) is adjustable by the aid of a control setup.

Abstract: The invention relates to an improvement in a dehydration machine for wood pulp, sludges, or similar fibrous material, composed of a lower strainer operating as a support strainer and an upper strainer operating as the cover strainer, which loop support and reversing rolls and are adapted to pass jointly with the material to be dehydrated coming from a material feed through a wedging section and through pairs of pressing rolls in a pressing section, the improvement comprising a laterally sealed wedging section arranged substantially vertically or at an incline, followed directly by a reversal means provided with a lateral seal, and the pressing section including a group of rolls which at the beginning contains a pair of first and second pressing rolls mounted next to each other, with a pressing roll contacting the second pressing roll.

Abstract: A filter apparatus for removing suspended matter from a suspension including a tank for receiving the contaminated liquid and a filtrate chamber. A perforate wall of the filtrate supports an endless and reusable filter media. The filter media is in the form of a closed loop having a run of the loop located outside and below the tank for the convenience of removing suspended solid collected on the media. The media is displaced along the length of the perforate wall to provide a solids free filter area by a movable conveyor. The conveyor serves to displace the media and hold the marginal edges in sealing engagement with edges of the perforate plate to prevent the contaminated liquid from bypassing the filter area.

Abstract: A filter belt is progressed stepwise over successive vacuum boxes by a guide roller at the forward end of the upper run being extended from its retracted position to its full line position while vacuum to the boxes is shut off. A displaceable roller permits this by taking up any slack in the belt and return movement of the belt upon retraction of the foremost guide roller is prevented by a unidirectional arrangement in at least one of the rollers guiding the lower return run of the belt. Slurry is fed onto the belt by a first nozzle, optional wash liquor is fed onto the resultant filter cake by a second nozzle and optional recirculated wash liquor is fed by a third nozzle all under the influence of a control which provides for such feed only for a predetermined period of time during the actual movement of the belt.

Abstract: A sieve belt press includes two endless sieve belts which pass over a number of rolls. In the area in which the two sieve belts return separately, drive rolls are provided so that each sieve belt is driven separately. In addition, at least one further drive roll is provided in an area within which the sieve belts are passed in common over such further drive roll.

Abstract: A dewatering apparatus is disclosed containing a pre-dewatering funnel possessing pervious walls over which there are guided two wires. Arranged after the pre-dewatering funnel are two dewatering cylinders over which both of the wires are guided along a substantially S-shaped path of travel. A press roll is arranged after the last dewatering cylinder, this press roll coacting with further press rolls.

Abstract: Disclosed are methods and apparatus for rinsing soluble materials from the filter cake formed in a double belt press. The belts with the filter cake therebetween are suspended between two spaced apart rollers to relieve pressure on the filter cake and the filter cake is simultaneously exposed to a rinse medium. Pressure is thereafter re-applied to the filter cake to extract the rinse medium therefrom.

Abstract: A method and apparatuses for expressing the liquid phase from a wet mixture such as a clay-like mixture includes a primary roll (12, 104) with a plurality of smaller pressure rolls (13, 112-118) biased against its surface at circumferentially spaced intervals and at increasing pressures. The primary roll and at least the upstream one (112) of the pressure rolls have a thick outer covering of a substantially deformable elastomeric material. A pair of opposed filter belts (22, 23 or 142, 144) are trained about the primary roll and means are provided to feed the wet mixture between the belts to carry the mixture successively through the nips between the primary roll and the pressure rolls. The mixture is initially subjected in the first nip to a relatively gradual rate of increase in pressure and in subsequent nips is subjected to progressively steeper rates of increase in pressure adapted to the different flow behavior of the mixture caused by the increasing solids content of the mixture.

Abstract: Slurry is fed (at 52) onto the upper run 46 of endless filter belt 48 and is dewatered by intermittently-operating means e.g. vacuum box 54, press assembly 56 and/or gravity box 66. The belt 48 is guided by a number of transverse guide bars 44, 76, 82, 84, 86, 88 and is progressed intermittently by a displaceable guide bar 74 whose forward movement extends the upper run 46. The bar 74 is coupled (e.g. by cables 106) with a slack-compensating guide bar 104 cooperating with the return run of the belt 48 and unidirectional means (e.g. arrester guide 94 and arrester roller 98) located therebetween allows movement of belt 48 only in the forward direction (arrow 114).Because this belt filter incorporates well supported guide bars instead of conventional rollers, the belt 48 can be much wider than has hitherto been practicable and the overall length of the filter may be correspondingly reduced, further obviating guiding problems.

Abstract: Press for removing water, wherein the material to be treated is led together with a wire which is pervious to water through a press nip zone formed by opposite surfaces. The press comprises compressible means for transporting the material to be treated. This means runs through the press nip and comprises several compression chambers which open out against the wire pervious to water. The compression chambers are preferably made so that they expand towards the water transmitting wire or felt, e.g. like a truncated pyramid.

Abstract: This invention relates to an apparatus for restratifying the filter cake in the strainer zone of strainer belt presses, in particular double strainer sludge dehydrating equipment, comprising one or more monofilament or multifilament cables (9) tensioned transversely or obliquely to the direction of advance of the strainer across the width of the strainer belt (6) and the filter cake (7).

Abstract: An apparatus for removing excess liquid and contaminants from a belt filter cake includes a perforated main belt extending over a separation drum. An anti-wear permeable belt has one portion lying against part of the main belt supported by the separation drum. There are exterior suction headers and chambers effective through the anti-wear belt and main belt and a main suction box within the separation drum for cake recovery where the main belt is in contact therewith. Wash water nozzles are within the separation drum directed toward the exterior suction headers and chambers.

Abstract: In order to progress belt 10 in stepwise manner without the need for a heavy tensioning roller towards the end of return run 19, ram 58 is displaced to the left thereby moving first stepping roll 55 to its dotted line position and extending bight 59 to draw the forward end of upper run 13 into said bight 59. Movement in the opposite direction of belt 10 is prevented by a unidirectional devices, e.g. pawl and ratchet mechanisms (not shown), on rollers 53, 54. Simultaneously, second stepping roll 56 is noved to its dotted line position to correspondingly reduce the extent of bight 60, thereby permitting part of return run 19 of belt 10 to move back into upper run 13. Subsequently, ram 58 is displaced to the right to return rolls 55 and 56 to their initial positions, reduce bight 59 and extend bight 60.

Abstract: This invention relates to a device at presses for dewatering materials such as peat, digested sludge and other fiber material, which device comprises a belt, which in cooperation with at least one press roll is arranged to apply a press pressure to a material introduced between belt an roll. Certain problems exist here in achieving a high and evenly distributed press pressure over the whole belt width, but this and other problems are solved according to the invention in such a way that the belt consists of a number of separate belt elements (19) located beside each other, each with a cross sectional form decreasing from the side (20) facing the material and with edge portions (23) being in contact with each other, which portions are so elastic that they are opened by the material exposed to the press pressure for discharge of water pressed out of the material.

Abstract: A filtering apparatus and method is disclosed adapted to filter suspended solids from a liquid, consisting of a filter housing which receives a flexible belt filtering element into a filter chamber, the liquid to be passed through the belt to filter out solids. The flexible belt is movably mounted to be passed through end openings on either side of a filter chamber to enable removal of accumulated solids after each filter cycle. The end openings are sealed during filtering cycles by flexible tube segments extending across the openings which are pressurized to effect a seal and evacuated to allow removal of the belt. A series of such filters may be stacked together with a traveling roller assembly utilized for simultaneously moving the belts of each filter in and out of the chamber.

Abstract: A spent flake drainer-conveyor for transferring spent flakes from a solvent extraction apparatus to a desolventizer-toaster apparatus, having a closed vapor tight housing extending from the desolventizer-toaster to the solvent extraction apparatus. A drainage section is formed in the housing and contains a screen section through which the flakes are moved. A vacuum source is attached to the drainage section causing a pressure differential across the screen in order to assist in separation of solvent from the flakes as they pass through the screen. A motor torque monitoring device is associated with the drive motor of the picker in the solvent extraction apparatus to provide an indication of the level of flakes in the trough portion of the solvent extraction apparatus.

Abstract: Disclosed is the preparation of micro-bits of expanded styrene-polymers and of expanded polyolefins by comminuting the styrene-polymer or polyolefin in a particular combination of comminuting steps in a suitable comminutor that can provide that combination of steps and in the presence of water as a cooling agent. The polymer micro-bits, which are produced as an aqueous slurry, may be rendered dry-to-the-touch by vacuum filtration followed by passage through a filter press.

Abstract: The disclosure concerns an apparatus for separating various sizes, shapes, and textures of solid particles from a liquid, comprising: a settling tank having an elongated ramp at one end with a scraper flight conveyor, driven at the upper end of the ramp, to scrape settlings from the bottom of the tank up the ramp out of the tank; and at least one cylindrical rotatable filter drum assembly snapped between spaced rigid guide and supporting brackets in the tank. An axial end of the filter drum has a ball duct seating in a socket duct connected to the intake of a continuously-operating pump for circulating filtered liquid to the machine tools with a bypass into a clean tank that overflows into the settling tank. The other end of the filter drum assembly is axially outwardly resiliently pressed, such as by a spring against an opposite wall of the tank, to urge the ball and socket joint together.

Abstract: A sludge thickening apparatus for dosing sludge with a cationic polyelectrolyte, allowing time for the development of a floc structure, placing the dosed sludge onto a surface through which liquid may drain freely by gravity in such a manner that the floc structure is retained, and removing the thickened sludge from said structure.

Abstract: An apparatus for pressing liquid out of suspensions containing liquid, comprising a screw feeder (5) adapted to feed the suspensions towards a dewatering zone (2) in which there are disposed two converging endless filter members (20, 21) adapted to be driven round a pair of back and front breaking rollers (18a, 18b). The pressing angle (.alpha.) between the filter members can be varied as can the speed of the filter members in relation to the material which is fed forwards in order to achieve an optimum flow resistance for each suspension. In certain cases, this can be very high. A worm wheel (13) is provided to prevent material from retreating in the screw thread (11).According to one form of embodiment, two or more dewatering zones are disposed in series one after the other, thus further increasing the possibilities for achieving optimum dewatering conditions.

Abstract: Contaminated liquid is filtered through a conveyor-driven endless loop filter belt which surrounds a filter box submerged in a tank of the liquid to be filtered. The liquid is caused to flow through the filter belt and into the perforated upper and lower walls of the box by means of pump-induced static pressure differential. After predetermined build-up of filter cake on the filter web over the filter box inlets, control means index the filter web to bring clean web into registry with the filter box inlets. Improved means for preventing contaminated liquid from by-passing the longitudinal edges of the filter belt comprise longitudinally extending expandable tubing which can be pressurized to firmly clamp the filter belt edges against a rigid reaction surface.

Abstract: A deliquefying system including at least one drainage device having a wear surface and being connected to a source of suction open to the wear surface. A wet web of material to be deliquefied is passed over the wear surface so that liquid is removed from the wet web of material by the drainage device. A liquid deckle is at each exposed end of the drainage device in position to prevent air from entering the drainage device through the end zone and thereby restricting the flow of air to passage through the wet web into the drainage device.

Abstract: Method and apparatus for draining and expunging excess oil from delicate pizza crusts which have been fried in oil, adapted for association with discharge mechanism of a crust fryer, functioning in cooperation therewith to receive, drain, and manipulatively reposition the crusts for packing into shipping cartons. Crusts discharged from the fryer at the infeed end fall into slots formed by adjacent vertical flights provided at spaced intervals on an inclined drain conveyor. The delicate crusts are held against deformation in upright position by the flights during their traverse of the conveyor length thus allowing for dripping drainage of oil from their respective surfaces. The oil so drained is collected in a drain pan positioned beneath the conveyor and at an angle sloping towards the frying mechanism at the infeed end of the conveyor. Oil collected by the drain pan is thus directed into an associated catch tank for subsequent return to the fryer.

Abstract: Belt 21 on which a residual filter cake has been formed by the action of a suction box (16, FIG. 1) on a slurry, is brought over a filter grid 46 superimposed on a membrane 42 inflation of which causes the filter cake to be compressed upwards against stationary pressure plate 53 for further dewatering. The grid 46 has parallel grooves in its top surface and further parallel grooves in its under-surface, and intersecting with and communicating with those in the top surface, to permit suction to be applied by way of suction pipe 146 and drain duct 45. The belt 21 is intermittently driven, but the arrangement may be such that the belt moves continuously and the grid 46, membrane 42 and pressure plate 53 move in sequence, forwards from a starting position for a certain distance in contact with the belt while applying pressure to the filter cake and then backwards to the starting position out of contact with the belt.

Abstract: Slurry required to be filtered is supplied to a downwardly inclined feed section of intermittently-moving belt 25 by way of supply pipe 20. Inclination of succeeding vacuum section of belt 25, over vacuum boxes 17, ensures even distribution of thin layer of slurry over belt 25, dependent upon angle of inclination, in range 4.degree. to 20.degree. to horizontal (an angle of 8.degree. being illustrated).Subsequently resultant filter cake layer is subjected to mechanical dewatering by an expansible membrane of a lower pressure plate 23 being expanded to press belt 25 with filter cake thereon against underside of counterplate 24.

Abstract: A magnetic belt conveyor type magnetic particle separator comprises a storage tank for storing cutting oil containing magnetic particles, an endless belt conveyor extending sidewise from the storage tank in an upwardly inclined direction, and a magnet disposed beneath the forward run of the belt conveyor to extend in the direction of running thereof. Magnetic particles contained in the cutting oil are attracted by the forces of the magnet to the upper surface of the forward run of the belt conveyor to be conveyed up to the forward run end thereof and separated therefrom at the forward run end for being discharged.

Abstract: Apparatus for thickening sludge comprising a driven foraminous belt (10) having a conveying surface arranged at least substantially horizontally, a chute (14) for feeding a matt of sludge onto the belt (10) at one end of the conveying run, and a plurality of parallel flexible strips (21) of material attached at one end to the output end of the chute (14) and allowed to rest freely upon the belt (10) at the other end, whereby the sludge passes onto the belt in one or more strips whose width is substantially less than that of the belt, thus to leave one or more zones of the belt free of sludge to permit drainage of water therefrom through the belt, there being a plurality of deflecting members (22) disposed downstream of the output ends of the strips (21) and adapted to deflect a portion of each strip of sludge onto the next adjacent part of the belt left free of sludge thus to produce a matt thereof of substantially uniform thickness extending across the belt.

Abstract: Apparatus for cleaning cutting-laden drilling mud utilizes an upwardly inclined traveling belt screen. Successive portions of the screen are established as a planar screen surface supported by an underlying grille. A vibration unit attached to the grille imparts vibrating movement to the screen to more effectively separate cuttings from drilling mud deposited thereon. A vibratory plate is immersed in the puddle of mud which forms over an aft section of the inclined planar screen surface and acts to compact the mud and enhance its penetration therethrough. An auxiliary gas break-up screen disposed in the path of mud being directed toward the belt screen causes the release of gases contained in the cutting-laden drilling mud, and a blower driven vented enclosure hood placed over the gas break-up screen captures and exhausts released gases.

Abstract: The invention is relating to a method of removing fluid from a mixture of fluid and solid substance, in which the mixture is guided with the aid of a conveyor belt along the outer circumference of a drum which is surrounded at least over part of its circumference by the conveyor belt, whereby the conveyor belt is positively driven in order to obtain the intended displacement thereof, while the drum is braked as well as to a device for carrying out the method of aforementioned comprising a drum and a belt extending along part of the drum, the relative dispositions of the drum and the belt being such that the mixture can be carried along between the belt and the drum, which are each or both previous to fluid, whereby the device comprises furthermore means for driving the belt and means for braking the drum.

Abstract: The filter-press includes a framework having vertical guides. On the upper ends of the vertical guides is horizontally secured a stationary thrust plate. On the same vertical guides are horizontally mounted a movable pressure platen connected with a reciprocating drive and being capable of vertically moving along said guides, as well as filter plates and frames disposed above each other between the thrust plate and the pressure platen, with the frames being located each between the neighboring filter plates. Each filter plate has vertical side boards, a sieve fixed on the upper butt ends of the side boards and a sieve fixed on the lower butt ends thereof. Mounted on the side boards between the sieves is a horizontal partition dividing the inner space of the filter plate into an upper cavity and a lower cavity. Between said frames and filter plates is passed in zigzags an endless filter band connected with a stepping drive and running round each filter plate from above and from below.

Abstract: A portable machine for separating liquid from a slurry comprising an interconnected pair of beams cantilevered above the base with a plurality of rollers rotatably mounted between them. An endless belt is carried on and driven by the rollers to move upward from a slurry hopper, over a source of liquid-drawing vacuum, and back down under the hopper and collector tank. The belt and rollers are scraped and washed on the return run and, because of the cantilevered configuration, the belt is easily removed by sliding it off the rolls from one side of the machine.

Abstract: The invention relates to an apparatus for the purification of oily emulsions, solutions, industrial waste waters or the like. The apparatus includes a reaction container, at least one discharge connecting piece, an inflow trough and a band filter fitted with a fleece band, a filtrate container arranged under it and a sludge container provided at the discharge end of the band filter.

Abstract: A hinged doctor blade is biased to its operative position respecting the belt of a belt conveyor. Shoes at each end of the blade ride on the belt ahead of the blade respecting belt travel and are positioned and connected to the blade so that the forward clips of the belt joint lifts the blade upon the first approach of either end of the joint and the other end is effective to hold the doctor blade in its raised position until the forward portion of the seam is beneath the blade and the blade can safely ride over the seam and then resume its operative position respecting the filter belt. Adjustment means are provided so that the positions of the shoes relative to the doctor blade may be set as required by the length of the seam having reference to the direction of belt travel.

Abstract: The disclosure concerns an apparatus for separating various sizes, shapes, and textures of solid particles from a liquid, comprising: a settling tank having an elongated ramp at one end with a scraper flight conveyor, driven at the upper end of the ramp, to scrape settlings from the bottom of the tank up the ramp out of the tank; and at least one cylindrical rotatable filter drum assembly snapped between spaced rigid guide and supporting brackets in the tank. An axial end of the filter drum has a ball duct seating in a socket duct connected to the intake of a continuously-operating pump for circulating filtered liquid to the machine tools with a bypass into a clean tank that overflows into the settling tank. The other end of the filter drum assembly is axially outwardly resiliently pressed, such as by a spring against an opposite wall of the tank, to urge the ball and socket joint together.