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: Screw press, with small dimensions, particularly suitable for the compaction of solid waste for disposal also by means of sorted-waste collection, of the type which 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 it and feed it to a following small-diameter screw section with a small-pitch helix, surrounded by an internally scored stator body so as to produce the feeding and compaction of the material which also occurs in conjunction with the action of constriction means which act on the discharge mouth of this latter screw section, a press of this type being characterized in that the two said aforementioned screw sections (3, 4) 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 said two screw sections, but which has a length corresponding to the

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: 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 movable stuffing machine for producing silage is disclosed wherein the silage is stored on the bottom and is used for filling a tubular film. The stuffing machine comprises a stuffing wall (1) which is disposed perpendicular to the longitudinal direction of the stuffing machine and the direction of stuffing. A driven worm-type compactor is mounted on the stuffing wall (1), is aligned at a right angle from a longitudinal direction of the stuffing machine, is disposed in a horizontal direction, and is embodied as a pronged rotor (3) encompassing conveying prongs (9) which are offset in a helical manner. A feeding device (4) encompassing a metering mechanism (6) is placed upstream of said worm type compactor. The stuffing machine also comprises a roll (7) of silo film, which is mounted thereabove and from which the silo film (30) is directed to the guiding wall through at least one deflection roller (8).

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: 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: A rotary press is supported on a frame allowing liquid and solid receivers to be placed underneath the rotary press. The rotary press has an outer ring and an inner drum. The inner drum has an upper and lower flange with a stripper ring retained between these flanges. The flanges form two sides of the cavity where the pressing takes place. The flanges carry the solids away from the pressing zone to a discharge zone where the stripper ring expels the solids. By transporting the solids away from the pressing zone where liquids are expelled, reabsorption of the liquid is avoided. The stripper ring can move relative to the two flanges and is biased against the outer ring by the inner ring. The stripper ring applies pressure to the material to be processed and also pushes solid material from between the upper and lower flanges to fall into a receiver for the solids.

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: An apparatus and method for cotton module building utilizing one or more augers on a compactor frame movable for compacting cotton in a cotton compacting chamber of the module builder. The auger or augers are rotatable for moving accumulated cotton in opposite directions therein, and are tiltable by contact with cotton accumulated unevenly in the chamber. A position or positions of the auger or augers are sensed for detecting tilting of the auger or augers. A controller responsively controllably operates the auger or augers for moving cotton in contact therewith in an appropriate direction for reducing the tilting and more evenly distributing the cotton. The cotton can then be compacted into a cotton module having desired dimensions.

Abstract: A machining waste metal recycling machine has an in-feed hopper. The hopper uses paired augers to move the waste metal through the hopper to a cutting and transporting auger. The hopper augers are powered independently from each other, and may be individually reversed or reversed as a group to clear jams. In the event a jam is not cleared through one or more reversal cycles, the remaining augers may be operated to clear the hopper, thereby avoiding the need for manual unloading. Within the hopper are one or more shear bars that are provided to sever bunches or bundles of machining waste and thereby clear tangles which might otherwise jam the augers. The cutting and transporting augers ultimately feed a reciprocating compactor having a movable gate with one or more grooves for controlled drainage of machining oil and other liquid, as the machining waste metal is compressed into pellets.

Abstract: The material compactor generally includes a feed apparatus and a final compaction apparatus. The final compaction apparatus generally includes a compaction chamber having confronting compression plates and an adjustably taperable portion. The area of the inner cavity of the final compaction chamber can be adjusted to become measurably smaller (tapered) or larger at the opened discharge or expelling end. Consequently, compacting movement of the material within the compaction chamber and through the chamber significantly subjects the material to restrictive compacting pressure which in turn compacts the material and performs liquid separation with each operationally continuous movement through the final compaction apparatus and out an open discharge port.

Abstract: A diverter valve is provided for an extruder, especially a twin-screw extruder, that allows for the replacement of the extruder screws without dismounting the same. The diverter valve includes a valve housing with a first flow passage, which can be fastened indirectly or directly to an extruder cylinder, whereby the valve housing can be arranged on the extruder cylinder with the first flow passage aligned with the screw area. The cross section of the first flow passage is constructed large enough to pass extruder screws arranged in the extruder through the flow passage.

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 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: 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: 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: An improved twin screw extruder device (14) is provided which is capable of producing a wide variety of high quality extrudates having greatly varying final properties, without the need for extensive machine modifications. The extruder (14) includes a barrel (16) together with a co-rotating twin screw assembly (22). The assembly (22) is made up of a pair of screws (50, 52) having central, tapered shafts (54, 56) equipped with outwardly extending helical flighting (58, 60); the screws (50, 52) are non-parallel and are positioned so that the flighting (58, 60) thereof is intercalated along the length of the screws (50, 52). The fighting is of specialized configuration and tapers along the length of the screws (50, 52) preferably at an angle of taper different than that of the shafts (54, 56); moreover, the width of the outer flighting surfaces (70, 72) increases along the length of the shafts (54, 56).

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cilinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within the tumbler cilinder to raise moistured solids, wherein said water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cilinder and raised by the blades which comprises a separator to separate the remaining water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cilinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cilinder is mounted to, and which said collecting and recycling hopper collects and recycles the wastewater to the tu

Abstract: A juice extractor including a helical spindle connected to a power driven source, and a housing having an inlet in the upper part and an outlet in the lower part. The helical spindle includes a fine grinding portion and a refine grinding portion. At the end part of the helical spindle is a drum cap which includes a durable bushing element. The drum cap has a threaded tube portion formed in the lateral direction to join with a pressure control cap which has a squeezing flange formed on the inner part of the circumference thereof so as to press a circular protrusion of the bushing element in order to control the optimum squeezing pressure and maximize the effectiveness of the compression of foodstuff such as fruit or vegetables.

Abstract: A screw press inlet section comprises a housing defining a radial inlet opening leading to an axially extending chamber through which a screw is rotatably mounted for conveying and dewatering a solid-liquid mixture fed into the chamber through the inlet opening. The housing has an end wall extending in a plane normal to the screw and to which a perforated plate is integrated to provide the additional surface available for drainage at the inlet section. A pulsator is provided within the housing to generate hydraulic pulses against the perforated plate so as to prevent plugging thereof.

Abstract: A system for compacting organic material such as silage and inserting compacted material into an elongate plastic bag. A feed table delivers material to a rotor that propels and compacts material into an inlet of a tunnel. A proportional valve controlling the hydraulic motor of the feed table controls the rate of which the feed table delivers material. A speed sensor senses the speed of the rotor and transmits a signal to the control unit connected to the proportional valve of the feed table. Overfeeding of material to the rotor results in a reduction of the rotor speed. Such reduction is sensed and the feed table delivery rate adjusted accordingly to optimize filling of the bag.

Abstract: An apparatus for de-watering sludge. A main shaft is rotated about a longitudinal axis at a first rate. A screw shaft coupled to the main shaft is rotated about the longitudinal axis at the first rate. Screw flighting coupled to the screw shaft is rotated about the longitudinal axis at the first rate. A first and second stage drum are rotated about the longitudinal axis at a second rate. Sludge is introduced to a first area defined by an outer surface of the screw shaft and an inner surface of the first stage drum. Moisture is removed from the sludge through a first slot coupled to the first stage drum. The sludge is transported with the screw flighting from the first area to a second area defined by an outer surface of the screw shaft and an inner surface of the second stage drum, the second area being larger than the first area. Moisture is removed from the sludge through a second slot coupled to the second stage drum.

Abstract: Horizontal solids recycler to treat waste water comprising refuse solids from hog farms which comprises an intake and loading hopper adapted to establish a uniform curtain of the waste water, a mesh to which an over flow of the waste water is directed, a tumbler cylinder to which is mounted the mesh and which is mounted to a frame which rests on guide wheels, blades mounted within te tumbler cylinder to raise moistured solids, wherein said waste water of said moistured solids is passed through a mesh, a collecting bin to collect the solids coming from the tumbler cylinder and raised by the blades which comprises a separator to separate the remaining waste water from the solids, a screw to transport the solids, which is mounted to the collecting bin, a pressing section which comprises a perforated cylinder to which the solids are fed by the screw, a collecting and recycling hopper to which said perforated cylinder is mounted to, and which said collecting and recycling hopper collects and recycles the waste wat

Abstract: An apparatus for de-watering sludge. A main shaft is rotated about a longitudinal axis at a first rate. A screw shaft coupled to the main shaft is rotated about the longitudinal axis at the first rate. Screw flighting coupled to the screw shaft is rotated about the longitudinal axis at the first rate. A first and second stage drum are rotated about the longitudinal axis at a second rate. Sludge is introduced to a first area defined by an outer surface of the screw shaft and an inner surface of the first stage drum. Moisture is removed from the sludge through a first slot coupled to the first stage drum. The sludge is transported with the screw flighting from the first area to a second area defined by an outer surface of the screw shaft and an inner surface of the second stage drum, the second area being larger than the first area. Moisture is removed from the sludge through a second slot coupled to the second stage drum.

Abstract: An auger compactor is described in which a hopper is provided to feed vegetation into the intake end of a compression chamber which leads from the intake end opening into the hopper to a discharge end. A first helical auger flight extends along an auger axis, of a pitch that diminishes from a maximum pitch adjacent the intake end of the compression chamber to a minimum pitch adjacent the discharge end. A second helical auger flight is also situated within the compression chamber, circumscribing and slidably supporting the first helical auger flight. The second auger flight includes a second helical pitch that also diminishes from a point adjacent the intake end of the compression chamber to a point adjacent the discharge end of the compression chamber. A drive is provided to rotate one of the flights about the auger axis, to move and compact vegetation along a flow path from the hopper through the discharge end of the compression chamber.

Abstract: A coffee grinding, portioning, and pressing device (10) includes a coffee bean storage container (20) and coffee grinding mills (24) located under the storage container. Coffee ground by the mills is delivered from the grinding mills (24) into a ground coffee collection chamber (40) and then passes from the collection chamber through a motor-driven pressing tool (50) directly into a detachable delivery filter (14) which is temporarily attached to the device. The shape and rotational motion of the pressing tool cause the ground coffee to be directed through the tool and into the filter container. The pressing tool (50), which is biased downwardly by a spring tensioning mechanism (70) that transmits force to the pressing tool (50) through a tensioning drive axle (74), incrementally and uniformly tamps the coffee into the filter container as the tool rotates.

Abstract: The invention relates to a conical screw press for compressing and for removing liquid from bulk material, comprising a screw with a screw thread and a core in a housing, structure for rotating the screw in the housing, an inlet opening for the bulk material from which liquid is to be removed, an outlet opening for the bulk material from which liquid has been removed, and at least one outlet opening for the liquid which has been extracted. The characteristic features of the invention are that: a) the screw is dimensioned, for at least the greater portion of the length of the screw between the inlet opening for bulk material and the outlet opening for bulk material, such that the external diameter (D) of the screw thread and the diameter (d) of the screw core change axially in the screw press from a first axial position, where the external diameter of the screw thread=D.sub.1 and the diameter of the screw core=d.sub.

Abstract: Juice extractor, is disclosed, for crushing fruits or leaves, or root of green vegetable for extracting green juice, wherein, considering the incomplete juice extraction of the related art juice extractor, the present invention is provided with thread end portions and vacant portions at a rear portion of a screw for enhancing a crushing effect, and a fore end portion with reduced diameter at a fore end thereof, to which fore end a juice extracting member having detachable extracting net member and mounting member is coupled for secondary extraction, that improves a juice extraction efficiency, whereby further improving a pressing effect of the raw material for extracting juice, which provides a better yield, allowing an easy removal of remnants accumulated inside of the juice extracting components, to maintain the extractor clean, reducing a ratio of elasticity degradation caused by a prolonged use, and using in making noodle, as an alternative use.

Abstract: An apparatus for cleaning pasta presses, particularly for the "in situ" cleaning of the screws of screw-type machines, kneader mixers and the like in the pasta industry.This is effected without dismantling the machine by conveying cleaning liquids through the screw-type machines which are closed in liquid-tight manner. The cleaning liquids are preferably recycled and filtered.

Abstract: An enclosed type two-stage garbage compaction and storage structure, in particular a structure having both a hydraulic cylinder and a rotary inner cylinder provided with guide plates to compact garbage in two stages. The structure includes a housing, the hydraulic cylinder, and the inner cylinder. The housing is provided with a plurality of garbage slots to achieve quick collection of garbage. The housing has a front outlet and a lid. A slide plate is provided in front of the front outlet. The hydraulic cylinder is disposed horizontally, and has a piston rod at a front end and a push stop plate connected to the piston rod for pushing dumped-in garbage into the inner cylinder. The inner cylinder has a gate at an entrance thereof and a plurality of guide plates on its inner wall. When the inner cylinder rotates, a compaction effect is generated.

Abstract: A screw press for separating liquids from solid-liquid mixtures, especially pulp suspensions, which has a casing 2 provided with liquid passages, especially divided into segments 3, 3', as well as having a screw 4 rotating inside the casing, a shaft 5, preferably hollow, and a suspension feed area 6. It is primarily characterized by the suspension feed area 6 extending lengthwise in an axial direction on the screw casing 2 with the length and position of the feed opening being adjustable.

Abstract: An apparatus for separating solid matter from a liquid has a rotatably driven conveyor spiral with one end projecting into a container, such as a gutter, in which a liquid containing solids flows. The spiral conveyor conveys the liquid from the container into a surrounding screen jacket so that liquid escapes from the jacket while the solids continue to be conveyed by the spiral. The spiral conveys the solids into a hollow, cylindrical jacket in which is supported a rotatable shaft drivingly connected to the conveyor spiral and extending longitudinally therefrom. The shaft and hollow, cylindrical jacket form a compression zone and the hollow, cylindrical jacket has a lateral opening through which the solids are conveyed to an outlet device extending laterally from the opening for discharge of the solids to a transport container, a sack filling machine or the like.

Abstract: A multi-slot closed type powerful garbage compression structure including a housing, an inner cylinder internally provided with guide plates and being inclined forwardly, and a push bar behind the inner cylinder. The housing is provided with four slots at a rear section adapted to receive garbage, and a garbage outlet at a front end, the outlet being provided with a slide plate, and a waste water receiving trough at a bottom side. When garbage is dumped into the housing via the slots, the push bar rotates to push the garbage into the inner cylinder which rotates to compress the garbage. When the garbage inside the inner cylinder is full, the push bar may prevent reverse flow of the garbage. By the use of both the push bar and the guide plates inside the inner cylinder, better compression effects are achievable to reduce garbage storage space and eliminate use of hydraulic cylinders and thrust devices.

Abstract: A device for detecting bone fragments in deboned poultry carried on a conveyor belt of flexible clear plastic material. Fluorescent lights are positioned under the conveyor. A second conveyor positioned above the first conveyor is made up of a linked series of rigid clear plastic slats which bear down on the deboned poultry passing over the light table in order to reduce the thickness to allow the light to show through and reveal bone fragments. A video camera positioned inside the conveyor and looking down on the flattened poultry parts is used to identify bone fragments. In another embodiment, the inspection may done by operators. In either embodiment filters, desirably rose colored, are used to enhance the visibility of the bone fragments. Computer image recognition may additionally be used to identify and reject parts with bone fragments.

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: A hydrolyzer system, apparatus, and method for effecting the continuous conversion of offal, feathers, hair, and other keratinaceous material into usable protein products for further commercial usage. The hydrolyzer system includes a feed screw conveyor, transfer conduit, feed substrate expansion chamber, hydrolyzer, product expansion means, and dryer. The hydrolyzer utilizes direct steam injection heat transfer in combination with a feed expansion chamber means and means for agitation and mixing within the hydrolyzer to fluidize a plug of feather feed substrate formed in the transfer conduit by the feed screw conveyor. The apparatus provides a means for heating and fluidizing the feather feed substrate at elevated temperatures while mixing same to effect its hydrolyzation while preventing the escape of back pressure therefrom via a feed substrate plug formed by the feed screw conveyor.

Abstract: Methods and apparatus are provided for the recovery of organic compounds from fibrous plant materials. Organic compounds which can be recovered from the fibrous plant materials include plant metabolites, such as arabinogalactan and phenols, which can be isolated from the wood, for example, of the Western Larch and Tamarack tree varieties. In addition to the recovery of organic compounds from wood, fibrous wood products also may be isolated, in the form of a clean fiber that can be used, for example, as raw material in wood processing applications or in the manufacture of high quality paper products. In one embodiment, a fibrous plant material first is compressed, to recover a liquid exudate and a first pressed plant fiber product. Optionally, the fibrous plant material, such as wood particles, is compressed in the substantial absence of any added solvent, to produce a pure normal liquid exudate and a first pressed plant product.

Abstract: A screw press for squeezing out liquid from a fibrous material including a screen cage having an inlet for the material to be pressed and an outlet for the pressed material, a pair of parallel Archimedean screws, rotatably arranged inside the screen cage, each of the Archimedean screws having a main thread extending around a shaft with a height and a pitch decreasing in the direction from the inlet towards the outlet. Around each shaft and between the turns of each main thread, an auxiliary thread is provided having a reduced height with respect to the height of the main thread, and the auxiliary thread of an Archimedean screw is arranged close to the main thread of the other Archimedean screw at least along the portion of the main thread having a lesser height.

Abstract: A system for separating liquid from material, particularly from metal chips, which comprises a housing with a material inlet opening, a material discharge opening, a spiral-shaped pressure member disposed in the housing, and a plurality of openings in the housing for removing extracted liquid.

Abstract: A waste food treatment apparatus including a screw rod turned in a container by a motor unit through a spindle to squeeze water from waste food, a scraper turned by the motor unit to scrape out food dreg, a circular block and a food dreg propelling block fixedly secured to the scraper at different elevations, and a handle coupled to the circular block by ball bearings and turned to lift the scraper and the food dreg propelling block without stopping them from being turned by the motor unit through the spindle, for permitting food dregs to be positively scraped out.

Abstract: The waste suction and storage device includes a box (3) which, on the one hand, comprises waste storage means and at least one separation compartment (6) whose lower part is open and connects with the waste storage means and which, on the other hand, is equipped with ventilation means and includes a waste introduction opening and an air discharge opening (15).

Abstract: A screw flight element of a mechanical screw press for expressing liquids from fibrous material such as may be found in rendering operations and a method of remanufacture thereof and the product produced by the method. The helical flight section is one of several having different pitches used in such screw presses and is equipped with carbide elements spaced at strategic points along the periphery of the helical section and further surrounded with plasma arch welded cladding, thereby providing wear and shear points which are harder than the surrounding cladding which is in turn harder than the base material.

Abstract: An apparatus for separating whey from a slurry-like material such as bean and dairy products, includes a screen, a jacket mantling the screen with a first space outside the screen and a second space inside the screen, wherein the first space provides a whey chamber of a size which allows the screen to be submerged in the whey staying therein after the whey is squeezed through the screen, a spiral screw rotatively housed in the screen, the blades of the screw being kept in contact with the wall surface of the screen such that the whey is prevented from reversely flowing; and a take-out port provided in the jacket so as to allow the whey in the first chamber to overflow therethrough.

Abstract: In an apparatus for separating off the liquid portion from the solid portion of two-phase systems, in particular ceramic slips, having a screw and having filter surrounding the screw, a two-stage construction of the apparatus is realized by a first filter and a second filter section.

Abstract: A cleaning device of a screw press for filtrating and dehydrating garbage in which a plurality of dehydrate liquid guide grooves are circumferentially formed on an inner surface of a support cylinder which supports an outer surface of the filtration cylinder so as to permit the support cylinder to be less in contact with the filteration cylinder. Moreover, a dehydrate fluid is discharged through discharging holes, thereby improving filtration efficiency. In addition, a compression air, a pressurized water or high pressure steam is injected from the circumferential surface of a screw being rotated within the filtration cylinder to enable garbage remaining at a plurality of filtrating holes to be completely and cleanly discharged outside, thereby enhancing filtration effectiveness.

Abstract: A food product finisher includes a finisher housing and screen supported by the housing. A rotor driven within the screen has an inlet section with inlet vanes of reduced diameter in a steep helical configuration. The inlet vanes are joined continuously into body vanes of full height and less steep helical configuration on the body of the rotor. Steps or transition sections may be provided in the vanes. The vane configuration provides uniform loading of the vanes, high efficiency and reduced power consumption.

Abstract: A tapered auger shredder which includes a frame defining a grinding chamber with a front wall having a centrally-located discharge opening and a rear wall mounting a powered auger screw having a flighted shaft extending through the chamber and into the discharge opening. The auger screw and shaft are tapered and the screw flight is correspondingly tapered so that the volume pumped by the screw along the length of the shaft remains substantially constant, or the rate of compression is substantially reduced, to provide consistent flow of material to the discharge opening and reduce build up of material against the front wall. In a preferred embodiment, the screw includes a torque transmission collar which extends between a disc-shaped base plate supporting the screw and the first flight turn and acts to prevent jamming of material between the base plate and underside of the first turn as well as transmit rotational torque from the disc to the shaft and flight.