Abstract: An apparatus and process for separating drilling fluid from drill cuttings are disclosed.

Abstract: A device for dewatering bulk or free-flowing input material by compacting it is provided. The device has a housing arranged along an axis of rotation, which has an input area and a feed and compaction area following axially within a jacket pipe. In the housing, a coaxial drive shaft with circumferentially extending coils rotates, compacting the input material during transport from the input area through the feed and compaction area. In this process the residual water present in the input material is conducted through radial openings in the jacket pipe from the device. According to the invention it is provided that at least in a partial region the jacket pipe is provided with passages and inside the jacket pipe an inner pipe is arranged, which lies at least partially with its external circumference against the inner circumference of the outer jacket pipe and which at least in the area of the passages has passage openings that are several fold smaller than the passages in the jacket pipe.

Abstract: A sludge dehydrating apparatus (200) according to the present invention is configured such that power is provided at opposite sides of a rotating rod (243) of movable disks (230) so that even if the apparatus is comparatively large or is operated at low speed, the rotating rod of the movable disks (230) can be prevented from being deformed. Thereby, the movable disks (230) can be smoothly rotated at the same time, thus enhancing the efficiency of the dehydration operation. Furthermore, because power is provided on the opposite sides both of the rotating rod (243) of the movable disks (230) and of the drive shaft of a screw (210), even if the screw (210) is comparatively long, the drive shaft of the screw (210) can be preventing from bending, thus preventing malfunction of the apparatus such as deformation of a fixed disk or a movable disk.

Abstract: Screw press, with small dimensions, particularly suitable for the compaction of solid waste for disposal also using sorted-waste collection. The screw press comprises an initial large-diameter screw section with a wide-pitch helix, communicating laterally with the bottom opening of the loading hopper (1) in order to remove the material from the hopper and feed it to a following small-diameter screw section with a small-pitch helix, surrounded by an internally scored stator body. This produces the feeding and compaction of the material which also occurs in conjunction with the action of a constriction which acts on the discharge mouth of this latter screw section. A press of this type has the two screw sections (3, 4) which are separated and arranged parallel to each other and one above or around each other, so as to form overall a press which no longer has as its length the sum of the lengths of the two screw sections.

Abstract: A pre-separator for a screw press separator wherein the pre-separator increases the concentration of solid material in a water solid material mixture. The pre-separator is configured to have a frustoconical screen surface where a plurality of wiper blades engage the interior portion of the surface to provide de-watering action, and the plurality of blades are configured to reposition with respect to the center axis of the frustoconical surface to allow for engagement between the interior surface of the frustoconical screen, and the wiper blades.

Abstract: An exemplary embodiment of a screw crusher may utilize a cantilevered screw with an inverse tapered shaft with flighting for conveying the product up the length of the shaft for compression. The screw may include an end flight configured to provide thrust to the product for further conveyance beyond the end of the screw or additional compaction when utilized with a receiving container. An exemplary embodiment of the screw crusher may utilize a single moving element in relation to a cylindrical tube for compression of the product. Also, an exemplary screw compactor may utilize a fixed replaceable restrictor tube section and an efficient screw design making it more cost effective and efficient to operate than other known compactors. Furthermore, an example of the screw crusher may be fitted with perforated or the preferred “V” Slotted tube to perform liquid removal in addition to the compaction of the material.

Abstract: Screw press, preferably for removing liquid from a material to be conveyed, comprising a screw shaft (1) complete with a helical conveying flight (2) mounted on the screw shaft (1) and a housing shell (3) surrounding it, where a transport channel (4) is formed for the material to be conveyed between the screw shaft (1), the conveying flight (2), and the housing shell (3). In order to prevent conveyed material components from adhering to the screw shaft (1), and thus uneven filling of the transport channel (4), the invention provides for the screw shaft (1) to have a surface profile (5), at least in one section of the transport channel (4).

Abstract: A screw pipe unit intended to cooperate with and at least partly enclose a screw in a plug screw feeder for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings for filtrate dewatered from the chips/pulp in the screw pipe when the plug screw feeder is in operation. The screw pipe is, on at least a portion of its inner surface, provided with bars inclined with respect to the longitudinal axis of the screw pipe. The angle of inclination of the bars decreases in the longitudinal direction, from a first portion of the screw pipe unit with maximum inclination to a second portion of the screw pipe unit with bars substantially parallel to the axis, the second portion being further away from the inlet end of the screw pipe unit than the first portion.

Abstract: The device for dehumidifying and compacting solids contained in sewage for disposal, is designed to be applicable to machinery (1) comprising: a tubular screen (2) having at least an inlet (4) for a product to be separated, at least an outlet (5) for a separated solid part, and at least a filtering wall (3) through which the separated liquid part exits; a transport organ (7) predisposed internally of the screen (2) for transporting the solid part to be compacted towards the outlet (5). The device comprises a contrast element (9), predisposed at the outlet (5) for interacting contactingly with the product, which in a rest position thereof occupies at least a part of a mouth of the outlet (5) and which, under an effect of a pushing action of the product to be compacted, can elastically deform in order to increase a size of a free mouth of the outlet.

Abstract: A juice extractor capable of extracting juice from vegetables, fruits or soymilk from beans is disclosed. The extractor includes a housing having a draff outlet port and a juice outlet port, a screw having an upper rotary shaft inserted in a rotary shaft hole of the housing and a lower rotary shaft with a plurality of screw spirals formed on an outer periphery thereof, and a mesh drum for extracting the juice toward the juice outlet port, and a rotary brush mounted between the housing and the mesh drum and having a brush holder. Various nutrients and intrinsic flavor contained in the vegetables or fruits are maintained to the fullest extent by employing a very low speed screw of a squeezing mode. Also, since the housing accommodating the screw is vertically fixed to an upper portion of a drive unit, the material is automatically moved downward without pressing the material down, and the draff is discharged while squeezing and grinding the materials put in an inlet port.

Abstract: The machine (4) having an improved drainage grid (1) for compacting humid waste (2) comprises at least an Archimedes screw (7) which rotates internally of a containing structure (11) in which a support structure (13) is afforded for the grid (1). The drainage grid (1) comprises a perforated structure (16) shaped and connected to the fixed structure (13) in such a way as to maintain the perforated structure (16) continuously in contact with the helix (10) of the Archimedes screw (7).

Abstract: A method and a device for pressing a liquid extract from a material to be pressed include a screw press which conveys the material to be pressed along a pressing route and applies pressure to it. In addition, at least one extracting agent is added to the material to be pressed and is removed, together with the extract, from the pressed material. The extracting agent is supplied to the material to be pressed in an amount that is no more than twice the weight of the extract contained in the material to be pressed. At least a portion of the extracting agent dissolves in the extract.

Abstract: Electronic supervision may be provided. First, a stock number may be sent to a database server. The stock number may correspond to a product comprising, for example, an electrical cable. In response to sending the database server the stock number, specification information corresponding to the product may be received from a database stored on the database server. The specification information may comprise, for an electrical cable, a number of wires, a weight per thousand feet, and a diameter. Next, product production may be monitored to determine faults occurring during production. Monitoring the production may comprise displaying a data monitoring screen to production personnel. The data monitoring screen may provide data regarding the product and product comparison against a standard maintained within the database for the product. Fault data corresponding to the determined faults occurring during the production may be saved to the database.

Abstract: A vertical cylindrical dewatering apparatus for dewatering fibrous slurries, slurry of manure and water, or other similar slurries. The apparatus includes a housing that includes a defined chamber having an enclosed top end with a slurry injector into the chamber, a centrally disposed first filtering element that includes first and second flightings, and a second vertical cylindrical filtering element including a support grid. The first and second filtering elements define the chamber. The slurry in-flow port at the top of the apparatus directs the slurry spiraling down between the flightings. The particles start building up at the bottom of the chamber as the water is filtered out from the housing through filtrate drains. Compressed air supplied through a rotating seal down through the centrally disposed filtering element moves through the filter, and through the particles forcing the water from between the particles out through the outer filter element.

Abstract: A pre-separator for a screw press separator wherein the pre-separator increases the concentration of solid material in a water solid material mixture. The pre-separator is configured to have a frustoconical screen surface where a plurality of wiper blades engage the interior portion of the surface to provide de-watering action, and the plurality of blades are configured to reposition with respect to the center axis of the frustoconical surface to allow for engagement between the interior surface of the frustoconical screen, and the wiper blades.

Abstract: Shown is a two stage filtration system for treatment of fibrous vegetable matter, particularly oilseed materials such as oil-extracted canola flakes to separate the low valued fibrous material from soluble material and small non-structural water-insoluble material of higher value. The filtration system receives a vegetable matter slurry and passes the slurry through first stage filter which is an impeller type filter that operates to separate the slurry into a filtrate and a moist retentate. The moist retentate is further filter in a second compression filtration stage or a centrifuge to remove additional water. Small non-structural insoluble matter is removed in the filtrate.

Abstract: Described is a screw filter press comprising a screw shaft, which has at least one coil turn and two screw shaft ends, the shaft axis of which is oriented parallel to the gravity vector and which is supported on one side via the upper screw shaft end thereof and which is connected to a rotary drive, and which is enclosed coaxially, at least in its lower partial area in a so-called filter area by a cylindrical filter tube, which is provided with openings and at which a filtrate space adjoins radially, to which underpressure can be applied.

Abstract: A screw press is provided having a radial gate valve and supported longitudinally-extending screw shaft. The screw shaft includes a central shaft and helical threads which is driven by a drive package. The screw shaft is encapsulated within a housing including a hopper portion, transition portion, bearing portion and screen portion. A transition portion includes a radial gate valve which is angled such that the radial gate valve's axis of rotation is substantially parallel to the screw shaft threads. In addition, the screw shaft is supported by a first support at its proximal extremity and a second support towards its distal extremity. The support at its distal extremity includes one or more wear bearings which concentrically support the threads of the screw shaft in a frictional engagement manner. Back flow of material is prevented by a radial gate valve. The angle of the radial gate valve with respect to the screw presses housing provides for greater pressure build up within the screen portion.

Abstract: A compactor for compacting and dewatering debris comprises a housing having an inlet for enabling debris to be delivered to forwarding augers which forward the debris to a compaction chamber at the discharge end of the housing. The chamber has an outlet opening of less cross-sectional area than that of the chamber, thereby ensuring compaction of the debris as it moves toward discharge. Debris enroute to discharge may be sprayed with water to remove sludge-like substances which otherwise would cling to some types of debris.

Abstract: A screw press (1) for removing liquid from a pulp suspension has a shell (2) which is provided with openings through which the liquid can pass. The shell (2) contains a rotating screw with a screw flight (4) to which wearing parts are attached. Wearing part (6) and support (7) are connected to one another in a substance-to-substance bond by means of a soldered joint and in a positive bond by means of a projection (8) located at one of the two parts and which meshes into a recess (9) in the other part.

Abstract: The invention provides a filtration apparatus for volume-reduced gel-state polystyrene resin which can remove foreign matter contained in volume-reduced gel-state polystyrene resin by continuously and effectively filtering the volume-reduced gel-state polystyrene resin.

Abstract: A press cage bar for a device for expressing liquids, which is bounded by at least one pressing edge in the area of a wear surface of a hard layer and which, in the area of at least one lateral face of the body of the cage bar, has at least one spacer that is raised above the lateral face. The spacer is formed as a deposit weld on the lateral face of the cage bar and is provided with a certain bottom clearance from the underside of the cage bar, which is on the opposite side of the cage bar from the wear surface. The spacer extends along the lateral face no farther than to the hard layer. The extent of the spacer transversely to a longitudinal axis of the lateral face is greater than its extent in the direction of the longitudinal axis of the lateral face. The spacer has increasing thickness perpendicular to the lateral face in a direction extending from the hard layer towards the underside of the cage bar.

Abstract: A barrel bar, for use in a barrel of a screw device having a screw rotatable in the barrel about an axis, has a generally trapezoidal cross-sectional configuration. The barrel bar may have arcuate inner and outer surfaces and a relief along one side surface.

Abstract: The machine (4) having an improved drainage grid (1) for compacting humid waste (2) comprises at least an Archimedes screw (7) which rotates internally of a containing structure (11) in which a support structure (13) is afforded for the grid (1). The drainage grid (1) comprises a perforated structure (16) shaped and connected in the fixed structure (13) in such a way as to maintain the perforated structure (16) continuously in contact with the helix (10) of the Archimedes screw (7).

Abstract: A choke for a screw device include a choking plug comprising a plurality of choking plug segments, and a choking ring cooperating with the choking plug, the choking ring comprising a plurality of choking ring segments. The plug segments may be releasably mounted to a hub is releasably mounted to a shaft of the screw device, and the choking ring segments releasably mounted to the barrel.

Abstract: An apparatus is provided and, in one example embodiment, includes a plurality of holes occupying a center region of the apparatus. The apparatus also includes a perimeter that surrounds the holes such that an end user can grasp the perimeter when utilizing the apparatus. An object may be placed in contact with the holes and the perimeter folded inward toward the center region such that twisting of the apparatus extracts liquid from the object. In more specific embodiments, the holes are substantially equidistant from each other or staggered. The apparatus can be square in shape. In still other embodiments, the apparatus includes a recessed cavity, where the object is placed in the cavity before the twisting operation occurs.

Abstract: The archimedes screw (1) for use in conveyors, compactors and the like, comprises a shaft (2) on which a helix (3) is coupled, which screw rotates internally of a containing structure, wherein the archimedes screw (1) comprises a plurality of sections (4a, 4b, 4c, 4d . . . 4n) which can be threaded coaxially and solidly in rotation on a central shaft which defines the shaft (2) of the archimedes screw, each of which plurality of sections exhibits different constructional and functional characteristics from other of the plurality of sections.

Abstract: The invention is directed to a device for converting free-flowing feed material by pressurization with a cylindrical compression chamber arranged around an axis and confined at its periphery by a ring element with passage openings, and accommodating a pressure element that rotates around the axis in the direction of rotation. The feed material is axially conveyed to the compression chamber and is radially supplied to the ring element by the pressure element. The pressure element includes at least one pressing blade, which extends to and interacts with the ring element, the front flank of said pressing blade in the direction of rotation being curved such that between pressure arm and ring element, a narrowing compression zone is formed, the end of which is formed by a pressure piece.

Abstract: A screw press for pressing fibrous material, in particular sugar beet pulp, having a pair of adjacent counter-rotating shafts parallel axes, the shafts each having a helical structure winding in the opposite direction to the helical structure of the other shaft, a perforated filtering cage enclosing said helical structures, a loading hopper for feeding the fibrous material to the press, a discharge aperture for the exit of the pressed material, the helical structures having a helix (22, 32) and a helical element (23, 33), which has at least one perforated surface and a helical interspace with the outer surface of the shaft, the perforated surface having a length (L) along the axis of the shaft which is less than the pitch (P) of the helix so as to receive the helix of the adjacent shaft.

Abstract: A sieve device for insertion in a shaft has a connection for wastewater arriving in a supply device, which supply device is connected to a sieve surface of the sieve device for separating material to be separated from the wastewater. A worm conveyor transports the material to be separated out of the shaft. A fastening device is arranged in the shaft for the vertical fastening of the sieve device. The fastening device comprises a guide for the sieve device. An intersection is provided between the supply device and the sieve device. The guide positions the sieve device in front of the intersection when the sieve device is moved relative to the supply device into the shaft for purposes of mounting.

Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.

Abstract: A press for the dehumidification of humid matter, in particular of residual waste is disclosed, which comprises a worm gear whereby the residual waste may be compressed mechanically. During transport with the aid of the worm gear, the humid matter is subjected to a drying medium, preferably pressurized air or a vacuum, whereby it is delivered from the press.

Abstract: A screw for a compression dewatering device comprising an elongated shaft having axially spaced apart first and second ends, a conveying section at the first end of the shaft, having a single helical screw flight rigidly projecting from the shaft, a flightless transition section axially adjacent the conveying section, and a dewatering section axially adjacent the transition section, having a double helical screw flight rigidly projecting from the shaft. Another embodiment is a compression screw with similar characteristics having a perforated tubular dewatering wall intermediate the ends, followed by an imperforate spool wall at the discharge end. A gravity feed device is operatively associated with the inlet end of the screw shaft for depositing bulk solids material through the feed opening onto the conveying screw, and a drive system is operatively connected to the inlet end of the screw for rotating the screw in the housing.

Abstract: Screw press for separation of liquid from solid liquid mixtures, especially pulp suspensions, with a casing with perforations for liquid and a screw shaft provided in it between which a circular gap is formed through which the solid liquid mixture is pressed. Furthermore, a counter pressure device in the area of the discharge end of the circular gap is provided. To reduce the space requirement in the discharge area at the discharge end of the circular gap, which makes it possible to reduce the size of the discharge casing and cut costs due to a less complicated design, the counter pressure device has a counter pressure surface, the radius of which is decreasing in the conveying direction of the solid liquid mixture.

Abstract: To provide a solid-liquid separator in which a treatment object such as sludge can be transported without clogging, liquid can be efficiently separated from the treatment object, and a maintenance operation can be easily conducted. Movable plates 12 and fixed plates 13 are disposed alternately, two screws 21, 22 are disposed in recess sections 14, 15 formed in the movable plates 12 and fixed plates 13, parts of blade sections 25, 26 of the two screws 21, 22 overlap each other, the two screws 21, 22 are rotary driven, and the liquid is discharged from the gap between the movable plates 12 and fixed plates 13, while the treatment object is being transported. When the movable plates 12 are replaced, the two screws 21, 22 are lifted up and then the movable plates 12 are pulled up and replaced.

Abstract: An apparatus for treating sludge, comprises a press for dewatering the sludge, a compaction device for receiving and compacting sludge dewatered by the press, a shredder for receiving and shredding sludge compacted by the compaction device, and a tube conveyor for conveying shredded sludge from the shredder. The press is controlled to vary the flow rate of the sludge in response to at least one sensed operational parameter of the press, such as the momentary power for operating the press, pressure in the sludge in the press, sludge concentration in the press, sludge feed flow to the press or separated water flow from the press.

Abstract: A screw press (1) for pressing fibrous material, in particular sugar beet pulp, comprising: at least one pair of helical elements (30) which are disposed mutually parallel and side by side and comprise at least one helix (32, 33) disposed about a rotary shaft which extends along a predetermined axial direction; a perforated walled filtering cage (5) supported by equidistant hoops (13, 14) and enclosing the helical elements (30) as an exact fit; a loading hopper (8); a discharge opening (9) for the exit of the pressed material; a collection sump (10) positioned externally to the filtering cage (4); in which the filtering cage (5) presents a modular structure having a distance between the axes of each module (M) which is constant and is a sub-multiple of, or equal to, the dimension of the loading hopper (8) measured along the predetermined axial direction, the loading hopper (8) being shiftable by its replacing one or more modules (M) of the filtering cage (5).

Abstract: A system is provided with a solid-liquid separator which can transport sludge and other material for treatment without clogging and can efficiently separator liquid from such material for treatment. The system includes movable plates and fixed plates alternatingly disposed and two screws disposed in holes formed in the movable plates and fixed plates. The screws have blades that partially overlap. As the two screws rotate, the material for treatment is transported and the effluent is discharged through the gaps between the movable plates and fixed plates.

Abstract: A screw press is provided having a radial gate valve and supported longitudinally-extending screw shaft. The screw shaft includes a central shaft and helical threads which is driven by a drive package. The screw shaft is encapsulated within a housing including a hopper portion, transition portion, bearing portion and screen portion. A transition portion includes a radial gate valve which is angled such that the radial gate valve's axis of rotation is substantially parallel to the screw shaft threads. In addition, the screw shaft is supported by a first support at its proximal extremity and a second support towards its distal extremity. The support at its distal extremity includes one or more wear bearings which concentrically support the threads of the screw shaft in a frictional engagement manner. In operation, semi-solid materials are introduced to the screw press through the hopper portion inlet.

Abstract: The invention relates to a screw compressor for compressing matter that passes through the screw compressor. The screw compressor comprises a screw having an outer thread with a pitch that decreases in the longitudinal direction of the screw, and a casing that encases the screw. The casing has an inner side that faces the thread of the screw so that matter may be passed ahead through the screw compressor between the screw and the inner side of the casing in a direction from an inlet end of the screw compressor, where the pitch of the screw thread is greater, to an outlet end of the screw compressor, where the pitch of the screw thread is smaller. Appliances are arranged on the inner side of the casing to prevent matter that passes through the screw compressor from rotating along with the screw. Inside the screw, a conduit is arranged for introduction of liquid. The invention also relates to a method for compressing and dewatering.

Abstract: A system for transporting and dewatering solids in a fluid system. An auger is used to transport solids and provide first stage compaction. A dewatering plate having a restricted opening provides second stage compaction and dewatering. The auger maybe be shafted or shaftless. First stage compaction is achieved by a change in helical pitch of the auger immediately preceding the location of the dewatering plate.

Abstract: A method and system for separating human waste solids from liquid for a shipboard toilet system that allows for the separation of solid waste, compaction of the solid waste and storage of solid waste. Wastes are deposited into a shipboard toilet system that uses vacuum toilets to flush waste into a large, inclined solid waste separation tank. A vacuum pump is attached to the separation tank to maintain negative pressure within the tank and system and to move the separated liquid stream. The separation tank has a separating screen disposed across its entire width to retain solid wastes while allowing liquid to flow through. After separation from liquids, solid waste material is compacted and dewatered with a helical screw through an inclined tube, and packaged for later removal as landfill or burned in the ship incinerator.

Abstract: A method for washing a fibre suspension with washing liquid, in which, in accordance with the invention, the fibre suspension is introduced into an annular treatment channel (24) that has an inlet end (72) and an outlet end (73) and is concentric with an axis of rotation (5) to form an inner annular layer (74), washing liquid simultaneously being introduced into the treatment channel form an outer layer (75), which surrounds the inner annular layer. The fibre suspension and washing liquid are caused to rotate in the treatment channel whilst moving from said inlet end to said outlet end, fibres in the fibre suspension being caused to move into the outer layer of washing liquid, under the influence of the centripetal force, so that an accept (29), the liquid phase of which completely or mostly consists of washing liquid, is discharged at the outlet end of the treatment channel.

Abstract: A screw press provided with a rear excess fluid outlet is described herein. The rear excess fluid outlet includes a circular screen provided at a longitudinal end of the screw press body, near a material inlet. Scraper blade assemblies are provided to prevent the screen from clogging. The efficiency of excess fluid removal is thereby increased by the increased screen surface near the material inlet of the screw press.

Abstract: A device for extracting juice from one of various plants (e.g., grass, soybeans, or wheat) comprises a motor, a hollow container, a spindle in the container and is rotatably coupled to the motor, a strainer surrounded a portion of the spindle and fastened in the container, a cap secured to the other end of the container and including a drum tapered toward the other end, and an adjustment mechanism including a hollow, cylindrical member fixedly coupled to the cap, and a manipulation assembly. The manipulation assembly can either advance into a mouth of the spindle for decreasing a size of a residue outlet formed by the manipulation assembly and the drum or withdraw from the mouth for increasing the size of the residue outlet. Also, juice concentration is adjusted in the sliding movement of the manipulation assembly.

Abstract: The invention relates to a coal dewatering system, method and apparatus. The dewatering system includes a preheater vessel (82) comprising a chamber (101) for heating coal, an inlet means (84) to permit the passage of coal into the chamber (101), and an outlet means (86) for permitting the passage of coal from the chamber (101). The dewatering vessel also includes a heating means (98) associated with the preheater vessel (82) to heat coal contained in the chamber (101) and a non-return valve means (92) to substantially prevent heated coal removed from the preheater chamber (101) via the outlet means (86) from re-entering the preheater vessel (82) via the outlet means (86). The dewatering system further including a dewatering unit (60) adapted to receive the heated coal from the outlet means (86) via the non-return valve means (92) and to thereby dewater the coal.

Abstract: A screw press provided with a rear excess fluid outlet is described herein. The rear excess fluid outlet includes a circular screen provided at a longitudinal end of the screw press body, near a material inlet. Scraper blade assemblies are provided to prevent the screen from clogging. The efficiency of excess fluid removal is thereby increased by the increased screen surface near the material inlet of the screw press.

Abstract: The invention relates to a screw press for separating liquids from solid-liquid mixtures, especially pulp suspensions, which has a casing provided with liquid passages, especially divided into segments, a screw rotating inside the casing, a shaft, preferably hollow, and a suspension feed area. It is primarily characterised by a filtrate shell 3 being provided directly at one or several screen baskets 2, 2′ and by discharge openings 6, 10 being provided in the lower part of the shell 3.

Abstract: A system for transporting and dewatering solids in a fluid system. An auger is used to transport solids and provide first stage compaction. A dewatering plate having a restricted opening provides second stage compaction and dewatering. The auger maybe be shafted or shaftless. First stage compaction is achieved by a change in helical pitch of the auger immediately preceding the location of the dewatering plate.

Abstract: A screw press provided with a rear excess fluid outlet is described herein. The rear excess fluid outlet includes a circular screen provided at a longitudinal end of the screw press body, near a material inlet. Scraper blade assemblies are provided to prevent the screen from clogging. The efficiency of excess fluid removal is thereby increased by the increased screen surface near the material inlet of the screw press.