Abstract: A device is described for continuously pressing liquid out of a suspension, in particular a screw press, which may have a rotationally-driven rotor, which may rotate in a tubular screw housing and support a conveyor screw. The screw housing may be at least partially formed as a first filter jacket, which may at least partially interact with the conveyor screw and which may have radial passages for discharging the filtered liquid and which may supply a filter cake, made of retained solids, in the conveyance direction of the conveyor screw to a discharge. To provide advantageous filter conditions, a ring-shaped first sleeve, which coaxially encloses the rotor, for peeling off an outer filter cake layer from the filter cake may be associated with the rotor, downstream from the conveyor screw. A conveyance channel for the remaining inner filter cake layer may be provided between sleeve and rotor.

Abstract: A screw press includes a press chamber in which a screw shaft is mounted such that the screw shaft is surrounded by a screen jacket and is rotatable about a screw shaft axis. The screen jacket is fastened to a screen jacket holding device including at least one beam running through the press chamber. The screen jacket is formed of a plurality of multipart screen baskets configured to receive a plurality of screen basket inserts, each multipart screen basket of the plurality of multipart screen baskets includes a semi-cylindrical first screen basket half shell and a semi-cylindrical second screen basket half shell. At least one pivot hinge is disposed between the first screen basket half shell and the second screen basket half shell. A basket lug is disposed on the first screen basket half shell and the second screen basket half shell.

Abstract: A compressor arrangement for automatically compressing ground coffee includes a housing having an inlet opening and an outlet opening with a retention flap which adjusts a bulk density of the ground coffee, conveying and compressing elements arranged in the housing which are driven by a first drive device, and an adjustment device which pre-adjusts the bulk density of the ground coffee. The adjustment device includes a second drive device, a retention flap shaft, a retention flap arranged on the retention flap shaft, a transmission which is operatively connected to each of the second drive device and the retention flap shaft, and an automatic dynamic pressure adjustment apparatus which enlarges or reduce a preset of the opening angle dependent on a higher dynamic pressure or a lower dynamic pressure being exerted on the retention flap. The transmission includes a transmission device which limits an opening angle of the retention flap.

Abstract: An oil extractor that includes: a main body housing; a motor; a feed hopper detachably coupled to the upper end of the main body housing to feed grain; a shell that communicates with the lower end of the feed hopper to receive the grain and is detachably coupled to one side of the main body housing; a screw shaft inserted into the shell and having an end portion that passes through one side of the main body housing and is coupled to the motor; a fastening means for detachably coupling the shell to the main body housing; and a shell cover surrounding the shell. The shell cover has a groove formed on its lower portion for receiving the shell and is supported by the main body housing and moves between a first position at which the shell is covered and a second position at which the shell is exposed.

Abstract: The invention relates to a screw press (1) comprising a shaft (4) and a spiral helix (5) provided thereon, wherein the helix (5) goes over in the inlet region (2) of the screw press (1) into a freely projecting helix (8). It is principally characterized in that a tube (9) is provided in the inlet region (2) of the screw press (1). As a result, on the one hand the screen area can be increased greatly in size, on the other hand the co-rotation of the suspension with the shaft can be reduced or avoided.

Abstract: A screw conveyor for transporting lignocellulose-containing material, including a housing containing a screw for transporting the lignocellulose-containing material from the inlet to the outlet of the housing, the screw including a screw core disposed along the screw axis and a screw thread surrounding the screw core, the screw thread including a screw depth defined by the distance between the periphery of the screw and the screw core, the inlet including at least one transverse plate dividing the inlet into at least two axial compartments for evenly distributing the lignocellulose-containing material at the inlet. A method for transporting lignocellulose-containing material by the screw conveyor, in which the axial length of the screw inlet being equal to or greater than the screw depth times the quotient between the axial speed of the screw and the incoming speed of the lignocellulose-containing material at the inlet.

Abstract: A screw separator for separating solids out of suspensions, having at least one housing and at least one feed pipe for the suspension, at least one discharge pipe for liquids, and at least one outlet for the at least partially dewatered solids. At least one strainer basket is provided in the housing in which a screw is rotatably mounted where at least one press basket is mounted downstream of the strainer basket, and the strainer basket is received in the housing radially floating and the press basket, radially fixed.

Abstract: A system for adjusting the output of a densifier that includes a compression screw. The system may include a pressure system that includes a frame that at least partially surrounds at least a portion of a rail section of an extruder module associated with the densifier, at least one fluid spring associated between the frame and a wall of the rail section, and a compression system associated with the at least one fluid spring, wherein adjustment of the compression system is adapted to increase or decrease the compression force applied by the at least one fluid spring to the wall of the rail section.

Abstract: A system for adjusting the output of a densifier that includes a compression screw, wherein the system includes a pressure system. The pressure system may include a frame that at least partially surrounds at least a portion of a rail section of an extruder module associated with the densifier; at least one spring interposed between a first plate and the rail section, the first plate interposed between the frame and the spring, wherein the spring is associated with a face of the first plate; and a compression system associated with the first plate and the frame, wherein adjustment of the compression system is adapted to increase or decrease the compression force applied by the at least one spring to a side wall of the rail section.

Abstract: An apparatus is provided for compressing a loose solid feedstock. The apparatus includes a two stage compressor. The first compression stage is a screw compressor. The second compressor stage is a reciprocating compressor. The reciprocating compressor operates co-axially with, and receives its feed from, the screw compressor. A choke cone maintains pressure in the outfeed from the compressor stages. The reciprocating compressor includes a piston that is driven by a pair of hydraulic rams. The position and operation of the hydraulic rams, the screw conveyor, and the choke cone is monitored by sensors. The reciprocating compressor, the screw conveyor, and the choke cone are all adjustable in real time to control the compression of the feedstock according to a pre-programmed schedule that need not have equal compression and retraction strokes. The operation of the screw conveyor may be advanced or eased off depending on the motion of the reciprocating compressor.

Abstract: An apparatus is provided for treating a loose fibrous solid organic feedstock. The apparatus includes a reactor vessel and a compressor operable to introduce feedstock at elevated pressure into the reactor chamber. The apparatus includes means for controlling and modulating moisture level within the reactor. The apparatus includes an outflow or discharge assembly that has its own feeder or drive for packing feedstock into a discharge accumulator. The discharge accumulator feeds an outflow valve, in this case a uni-directional rotation ball valve operated by a servo motor. Discharge from the valve may be carried through a diffuser into a settling cyclone. In operation the ball valve is rotated to open and close the outflow passageway, the rate of rotation being variable in real time.

Abstract: The invention provides a continuous process for removing organic solvents from a marc including the steps of: continuously introducing the marc into a desolventiser; introducing an inert, gaseous stripping medium into the desolventiser; removing the organic solvents from the marc by maintaining a sub-atmospheric pressure inside the desolventiser, thus providing an organic solvent-desolventised material; and continuously extracting the organic solvent-desolventised material from the desolventiser; wherein step (a) and (d) comprise compacting the marc and the organic solvent-desolventised material into a first and second plastic, substantially gas-impermeable mass respectively and extruding the first and second plastic mass through an annular gap, the opening of which is controlled by the rate of supply of the first and second plastic mass. The invention also provides a device for compacting a moist organic material into a first plastic gas-impermeable mass which is useful for implementing this process.

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 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: 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: 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: An apparatus for removing air from finely divided particulate material comprises a housing including a vent; an inlet to the housing; an outlet from the housing; a helix, rotatably mounted in the housing, the helix being adapted upon rotation to feed a particulate material from the inlet to the outlet; a motor mounted to the helix for the purpose of rotating the helix; and a compression assembly mounted to the outlet for compressing the particulate material passing through the outlet.

Abstract: A screw press apparatus has frames, a screw shaft, an outside tube, a cylindrical screen, a screw blade, a supply pipe, and a cleaning pipe. The screen is fixed between the frames to the outside tube, and has a plurality of fine holes and covers the screw shaft. The screw shaft and the screen define a cylindrical space continuously extending from an upstream region to a downstream region. Raw liquid is fed from the supply pipe via an opening of the screw shaft to the upstream region of the cylindrical space. The cleaning pipe ejects cleaning water onto the screen. Sizes of the fine holes of the screen decrease gradually from the upstream region towards the downstream region.

Abstract: Moisture reduction press for the separation of liquid from substances, comprising a first container with an inlet opening through which the substance is fed to an inlet chamber, and with a discharge opening from an outlet chamber through which the moisture-reduced substance leaves the press, and also where inside the first container there is arranged a second container, so that between the surface of the first container and the outer surface of the second container a passageway is formed. The moisture reduction press further comprises means for building up a pressure at least in the passageway and feed the substance forward, and in that the wall of the first container, preferably for the whole of its periphery and at least between the two chambers, is produced with through-going holes. There is hereby achieved a uniform distribution and pressing of the substance to be drained, regardless of the moisture content in the substance.

Abstract: Waste compaction apparatus has a screw conveyor which conveys material along a passage toward an exit nozzle which constricts the flow, to cause compaction. The screw conveyor is slidably mounted on a shaft, biased toward the nozzle. This allows the screw conveyor to move axially during compaction to help remove or avoid blockages within the apparatus.

Abstract: A press process and structure is disclosed for defluidizing earth drill cuttings, thereby extracting valuable drilling additives and returning them to the drilling system while producing a dense, drier material which may be chemically treated for distillation and/or better dissolution into the environment, thereby reducing, cost in transportation and environmental treatment chemicals thus reducing environmental contamination.

Abstract: A press process and structure is disclosed for defluidizing earth drill cuttings, thereby extracting valuable drilling additives and returning them to the drilling system while producing a dense, drier material which may be chemically treated for distillation and/or better dissolution into the environment, thereby reducing, cost in transportation and environmental treatment chemicals thus reducing environmental contamination.

Abstract: A device for treating a heterogeneous mixture and more particularly for separating wax and honey in a mixture obtained following an uncapping operation. The device includes a feed hopper (18) opening onto a sleeve (12) fitted with holes (26) in which an Archimedes screw (14) is disposed and driven in rotation by a motorized system (16), solid evacuation elements (20) and liquid recovery elements (22).

Abstract: A screw press in which a screw continuously dewaters a suspension. The screw has a threaded section and a downstream compression section with a variable squeeze, and the screw is powered to forward the suspension. A housing accommodates the threaded section and the compression section with the variable squeeze. The suspension is admitted in dilute form at an intake at one end of the press. At another end of the press, the suspension is delivered in dewatered form downstream of the compression section through an outlet. The housing is in the form of a wire basket permeable to liquids and impermeable to solids, and is axially displaceable back and forth adjacent the unthreaded compression section between a non-operating position and an operating position to vary an effective length of the basket. This effective length is zero in the non-operating position for emptying the press.

Abstract: An apparatus and method for treating oil-bearing material which includes an extruder having an elongated enclosure with an inlet end. The extruder also includes a worm assembly for working and advancing the material through the enclosure from the inlet end to the discharge end. A high pressure region is located adjacent the extruder inlet end. A force feeder provides material to the high pressure region at a specified supply rate. Oil in the material is liberated and drained in the high pressure region to a specified level prior to entry of the material into the extruder inlet end. The apparatus also includes an outlet in the high pressure region for drainage of the released oil, as well as a screen over the outlet to prevent material greater than a specified size from exiting the high pressure region through the outlet. The seed material is mechanically worked via the action of a rotating screw in the extruder. At the same time, steam is injected into the extruder to condition the worked seed material.

Abstract: An improved barrel extruder for extracting oil from seeds and other vegetable matter comprises a barrel screw that extends a substantial distance from the barrel downstream end and substantially through an extractor head. The extractor head is divided into three sections comprising a screen section and a port section where oil is extracted under extreme pressure and a tip section where the pulp is forced through a narrow gap to provide back pressure to the pulp in the port section. Under the extreme pressure developed in the port section, a substantial portion of the oil content of the oil seed or vegetable matter is extracted from the pulp. The extractor head is configured to permit the screen section and port section and separately the tip section to be easily exchanged for oil seeds and vegetable matter with different pulping characteristics and oil volume or percentage content.

Abstract: Apparatus for conveying and compacting material which includes fractions of different sizes, densities, elasticity, moisture-content, etc., wherein a shaftless spiral is disposed in a casing and the spiral is driven in rotation at an end of the casing where the material is fed into the casing. At the opposite end of the casing, i.e. a discharge end, the casing surrounds the spiral with slight play, and, moreover, the casing extends beyond the spiral to form a compaction zone. Counterpressure brakes the movement of the material to compact the material in the compaction zone. The casing is provided with drainage holes for discharge of liquid expressed from the material during passage through the casing. At the discharge end of the casing, the compacted material is cut into particles, preferably by a second spiral in a second casing which also serves to convey the cut material away from the casing.

Abstract: A multi-screw press for dewatering waste materials including a plurality of fixed filtering cylinders and a plurality of revolving filtering cylinders connected to the fixed filtering cylinders are installed within a single outer casing, and a plurality of tapered screws are located within the fixed and revolving filtering cylinders. The screws and the revolving filtering cylinders are driven by a single motor, so that the waste materials within the filtering cylinders are pressed by the screws and dewatered. A pressure adjusting device is located on the outlet of the screw press and is hydraulically driven. Any residue adhering to the filtering cylinders can be effectively washed away by the use of spray tubes.

Abstract: The present invention relates to a worm press for separating liquids from solids-liquid mixtures, in particular fibrous suspensions, more particularly under pressure, including a worm rotating inside a jacket comprising liquid passages. The worm press according to the invention is primarily characterized in that the shaft (13) of the worm (14) which is preferably of hollow construction, comprises in the axial conveying direction following onto the region which comprises at least one worm rib (14'), a smooth terminal region (13') in which the worm shaft (13) is designed as a jacket shaft, provided with a cavity (13") between a jacket (22) and a preferably hollow core (17), and that this jacket (22) comprises liquid passages, for example bores (3"), leading into the aforementioned cavity (13"), this cavity (13") being in communication with at least one liquid drainage outlet (18).

Abstract: Disintegrated material is supplied to a pressure chamber by a rotatable and axially translatable screw piston. The piston is rotated while in a first axial position to transport and compact the material in a receiving chamber against a closed output valve in front of the piston. The output valve is opened and the compacted material is moved into the pressure chamber by axial non-rotative motion of the piston. The output valve then is closed, and the piston is axially returned to its first axial position while rotating in the same direction as before. The operation cycle is repeated as above. An apparatus for carrying out a process comprises an axially movable guide piston rotationally carrying and guiding the screw piston for rotation and axial movement by action of a hydraulic cylinder and a mechanism for rotationally positioning the screw piston.

Abstract: The disclosure relates to an apparatus (1) and a method for compacting material, in which the apparatus comprises a path (10), an infeed device (40) which discharges in an opening (11) disposed in the path, and a spiral (30) which is rotary about its longitudinal axis and has no mechanical shaft. In connection with the discharge opening (12) of the apparatus, baffles (13) are provided which impede displacement of the material, Between the free end (39) of the spiral and the discharge opening (12) of the apparatus, the casing forms a compaction cell (15). The spiral is disposed to at least intermittantly abut against the path, in addition to which the spiral and the path form, in the region of the opening (11), a feed compartment (35) for supplied material, this compartment directly merging into the compaction cell (15).

Abstract: A process is proposed for the dewatering of compressibly dewaterable materials, in particular waste from the processing of paper material, which enables a very high degree of dewatering so that the waste can be readily disposed of, e.g. dumped. For this purpose, the material to be dewatered is initially pre-dewatered by gravity, and usually also by compression, in a transportation section (5). This pre-dewatering can take place in a continually operating feed section (7) through a perforated sieve jacket (10). The material then reaches a press section (6) in which a discontinuously working pressing device is in operation. Further improvements in the dewatering performance are possible by various embodiments of the corresponding pressing elements (13,14). The invention relates to both the process and the device for implemention of the process.

Abstract: A press for the mechanical dewatering of water-containing pulverised solid material is provided with a rotatable feed screw (3) which is so floatably mounted that it can perform a rotary pendular pivoting movement about a swivel point (D) lying in the area of the drive. Thereby, a high dewatering power is achieved with advantagous wear properties of the press. By special formation of the region where the solid material leaves the feed section (3), the effect and operating behavior can be further improved.

Abstract: A method and apparatus for conveying and compacting material which includes fractions of different sizes, densities, elasticity, moisture-content etc. wherein a shaftless spiral is disposed in a casing and the spiral is driven in rotation at an end of the casing where the material is fed into the casing. At the opposite end of the casing, i.e. the end located adjacent a discharge section of the casing, the casing surrounds the spiral with slight play, and, moreover, the casing extends in an end region below the spiral to form a correction zone. Counterpressure brakes the movement of the material to compact the material in the compaction zone. The casing is provided with drainage holes in the compaction zone for discharge of liquid expressed from the compacted material during passage through the compaction zone.

Abstract: A pretreating plastic waste device including a tank containing a liquid to which the plastic waste is introduced, a washing pump, a dripping drum, and a dewatering device comprising a press-screw adapted for separating the washed waste from the washing liquid and a drying drum fed by a hot air blower, and a filtration vat. A programmable controller receiving signals from various level and temperature sensors and various working parameters allows total control, at all stages, of the waste pretreatment cycle. The programmable controller is associated with a screen for displaying error messages and a control desk for allowing direct selective intervention at the level of the concerned elements.

Abstract: A scraper filter system, which comprises a screw-formed spiral impeller within a cylindrical filter element, and scraper means formed along the spiral end of the impeller for engagement with the internal surface of the filter element for scrapingly removing solid components deposited on the surface of the filter element.Further the present invention provides a filter system, which comprises a cylindrical filter element, a cylindrical casing allowing liquid components to flow from the inside to the outside through the filter element, a spiral impeller with the scraper means for engagement with the internal surface of the filter element for removing solid components, and further comprises a feed liquid inlet at one end of the cylindrical casing and filter cake discharge means including a cake discharge outlet at the outlet end of the casing.

Abstract: An apparatus for separating, by pressing, liquid and solid fractions intimately associated in a heterogeneous mixture, such as for example juices, pulps, stones, pits, pips, stalks and vegetable elements of fruits such as wine grapes is characterized in that a vessel (14) is provided having perforate side walls (15, 16) and bounded on its open upstream end by a piston-like member (10, 11) and on its open downstream end by a conical outlet member (50) defining an annular outlet passage, the vessel being filled with the heterogeneous mixture in an upstream-downstream direction thereof, and the vessel then being moved (30, 31) in the opposite, downstream-upstream direction so that the heterogeneous mixture is compressed between the piston-like member (10, 11) and the conical member (50), the pressing force being regulated and modulated for preventing deleterious over-pressing.

Abstract: Apparatus is described for forming fibrous bulk material or the like into a baled unit and binding it. The apparatus includes: (a) a rotatable auger, (b) a tubular housing surrounding the auger, (c) feeding mechanism for feeding bulk material to the housing, (d) a die adjacent the tubular housing, (e) a packing chamber adjacent the die, and (f) binding or tying mechanism to bind the baled unit without cessation of rotation of the auger.

Abstract: An apparatus for dewatering and squeezing a water containing material comprises a drum with a sieve mantle defining two co-operating drum sections, each comprising a feed screw extending therein. The first section of the drum in the feed direction is formed for dewatering of the material mainly by self-drainage. The first drum section is rotatable and is provided with means for cleaning the sieve mantle holes. The second section is formed for increased compression of the material, and has a thread height for the feed screw smaller at the outlet of the second section than at the inlet to this section.

Abstract: Apparatus for compacting and advancing a mass of particulate or fibrous material to a discharge end of a conduit combines an auger with a reciprocating annular piston. The improvement of the invention is in driving the piston by way of a flywheel equipped crankshaft which also drives a dynamically counter balancing member to reduce vibrations transmitted to the frame of the apparatus. Special hydrostatic guide sleeves are used to guide the reciprocating piston at a high speed. Further improvements include gas and liquid vents and a cooling jacket, both associated with the conduit to increase efficiency of the compacting. A density sensor controlled conical choke member at the discharge end assists in maintaining uniform density of the highly compacted plug of the material. Also, it breaks up the exiting plug to improve subsequent processing of the material.

Abstract: A liquid separator to extract liquid, usually water, from a water-solid mixture. The liquid separator has a housing with an inlet and an outlet separated by a liquid extraction chamber. The housing sidewalls defining the extraction chamber are porous, and are preferably comprised as a plurality of spaced apart rails or slats. The spacing between the rails provides a porosity for extraction of water. The rails are movable inwardly and outwardly relative to the housing in order to vary the volume of the extraction chamber. Bias means are provided that normally bias the rails inwardly of the chamber. A water-solids mixture is pumped through the chamber and tends to expand the chamber against the force of the biasing means. The combination of effects upon the subject mixture is to cause water extraction through both the squeezing by the slats and the friction occassioned by the dewatering of the subject mixture.

Abstract: An apparatus for the compaction and reduction of liquid content in a material includes at least one floating helix (3) rotatable about its axis by drive means (4, 30) and disposed in a casing (2) which, at least along a portion of its extent in the longitudinal direction, completely encloses the helix. In conjunction with the discharge portion of the apparatus, the casing encloses the helix with slight play. Seen in the direction of movement of the material, the discharge portion includes a helix-free region most proximal the discharge opening of the casing, intended for the formation of a counterpressure member which arrests the movement of the material. In this region, the helix is provided with an extension body (100) which reduces the available conveyor surface area. As a rule, the body is a cylindrical hollow body which as a rule is provided with drainage apertures.

Abstract: The apparatus comprises a plurality of stages having screw presses, the material passing out from the outlet side of the stages being passed by a transfer duct to the inlet side of the following stage. Each stage has a speed adjustable independently of the speed of the other stages. Compared with known screw presses, the advantage exists that following each treatment in a stage, by means of an opening in the transfer duct, the material can be measured, checked or subjected to an additional treatment. The number of stages can also be adapted to the material being processed and there is also a relatively large freedom with regards to the arrangement of the apparatus.

Abstract: A screw press for dewatering sludge and fiber suspensions, having a feed screw, a perforated drum surrounding the feed screw, an inlet or infeed aperture at one end of the drum, and an end wall section at the other end forming an annular outlet or outfeed aperture. The end-wall section includes a plurality of flaps located as an extension of the feed screw, the flaps being yieldably arranged to adjust the size of the outlet aperture. The end of each flap nearest the axis (9) of the feed screw (1) is pivotally mounted on an attachment connection (11), and the attachment connection (11) is arranged for movement along the axis of the feed screw (1). The flaps (7) are arranged to be pressed outwards under the influence of a first force generating arrangement (15,17,18) to form a larger angle with the screw axis (9), thereby causing the outlet aperture to decrease in size.

Abstract: A screw press for extracting liquids from liquid-solid mixtures continuously and in a single operation. The press comprises a barrel divided into a feed section and a pin-barrel section. A rotatable screw is disposed in the barrel. Grooves are provided in the feed section to ensure a good feed input and hence an economical throughput, the pin-barrel section including radial pins extending into the barrel which, together with the rotation of the screw cause a high pressure to build up in the barrel thereby comminuting the mixture. The screw has helical flights formed thereon, the flights defining ridges, radial bores being formed in the ridges which communicate with an axial bore formed in the screw permitting the draining away the extracted liquid directly from the region in which it is extracted.

Abstract: A new and improved auger-type ice-making apparatus preferably includes at least a pair of removable and interchangeable head assemblies adapted for preselectively producing either relatively dry flake or chip ice, cube ice or smaller nugget-sized ice pieces. A new and improved auger assembly preferably formed from a synthetic plastic material and a new and improved evaporator element are also disclosed, either or both of which can be incorporated into an ice-making apparatus, with or without the interchangeable head assemblies.

Abstract: A tunnel drier particularly for plastic materials has a screw-conveyor operated by an electric motor through a reducer.The shaft (11) of the screw is suspended rotatably in tapered roller bearings (9). The helical vanes (12) of the screw conveyor advance the material fed through a hopper (5), through a drying channel (4). Halfway between the last turn of the helical vane (12) and disposed at 90.degree. to the shaft (TR'), there is a semicircular section (13) to break up the material before it enters the high pressure area where the action of the advancing screw ends. This area is equipped with openings, in greater density in the high pressure area (6) than in the next section (6'). The shaft (11) is hollow downstream from the helical vane and has openings (6") in the final section. A truncated cone collar (14) and a flap door (7) with adjustable height, facilitate compression inside the channel (4).

Abstract: In a continuous press of a screw blade type, a driving shaft is rotatably secured to a frame by means of thrust bearings at both ends of the driving shaft, a screw drum having an increasing diameter towards center is disposed around the driving shaft to rotate therewith, a pair of screw blades are helically arranged around the screw drum symmetrically with respect to the center of screw drum, and an outer drum having a number of small filtering holes is arranged around the screw blades. A pair of inlets for introducing raw materials to be pressed are provided at both ends of the outer drum and an outlet from which the pressed raw materials are discharged is also provided in the outer drum at its center. Since repelling forces applied to the screw blades are cancelled each other, no thrust force is applied to the driving shaft and the bearing.

Abstract: The invention provides a helical screw press for processing grape crop in which a filter tube diverges from a predetermined section of its length in downstream direction such that the divergence enables the grapes to be released and prevents formation of an impermeable crust in the filtering tube thereby permitting total pressing and increased flow rate.

Abstract: Material obtained from animals, poultry, or fish and containing edible flesh along with normally inedible relatively hard or tough components, such as bone, gristle, tendons, etc., is fed in ground condition into one end of a perforated conduit that has a conveyor srew therein which progressively decreases in conveying capacity from the feed end of the conduit to an imperforate discharge end thereof. Such inedible components are compacted within the imperforate discharge end of the conduit by an extension of the conveyor screw prior to discharge following build-up and conveyance along the interior surface of the perforate portion of the conduit as a filter mat through which edible flesh is forced toward and through the perforations of the conduit to provide a substantially bone-free edible product. The discharge passage surrounding the .[.exeension.]. .Iadd.extension .Iaddend.