Abstract: A screw feeder includes a pipe, feed screw, rotatory shaft, dewatering holes, anti-rotation bars extending inside the pipe and protruding towards the feed screw, an inlet to receive solid-liquid mixture, and an outlet to discharge partially dewatered solid. The pipe includes at least one pipe section having a first peripheral zone in a vertically lower area with dewatering holes but no anti-rotation bars and a second peripheral zone in a vertically upper area with anti-rotation bars. A pipe profile includes two differently shaped profiles, a first and second pipe profile are selected from a square-shaped, partly circular, and a partly elliptically-shaped profile. The first pipe profile is selected to enable outer edges of the feed screw to remove material overlying the dewatering holes, and the second pipe profile is selected to prohibit contact between the outer edges of the feed screw and the anti-rotation bars.

Abstract: A pressing apparatus having a strainer cage and at least two feeding screws, which are arranged one behind the other in the feeding direction on a common screw shaft, wherein a pressure zone with no screw helix is arranged between the feeding screws. In the region of the pressure zone, the pressing apparatus according to the invention has a plurality of scraper shells, and these provide for improved efficiency of the pressing operation.

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 a soldered joint and in a positive bond by a projection (8) located at one of the two parts and which meshes into a recess (9) in the other part.

Abstract: The present invention relates to a machine for manufacturing solid recovered fuel, to a process for obtaining solid recovered fuel and to the solid recovered fuel obtained from said process. The homogenization extruder machine comprises a main body (7) provided with a feed opening (6), an extruder screw (9) and an outlet (14), characterized in that it comprises a compression cone (11) arranged at the final end of the extruder screw (9) and opening and closing means (12) for opening and closing the outlet (14).

Abstract: An apparatus for compacting and dehydration of organic waste includes a first drawer, which is designed to receive organic material and/or kitchen-produced foodstuff waste and is equipped with mechanical elements for compacting and dehydration of the foodstuff waste, as well as a second drawer, underlying the first, which is designed to receive the compacted and dehydrated foodstuff waste that comes out of the first drawer.

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 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 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: 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: 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 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: A screw press with twin screws is provided with discontinuities or interruptions 7 in the flighting 8 of the screws 2. Stationary resistor teeth 9 protrude at these interruptions into the flow of material being pressed.

Abstract: An adjustable leveling glide assembly for attachment to the foot of a table leg. The glide assembly has a flat, floor engaging glide support positioned under the foot of the table. A threaded stem extends vertically from the support and engages a threaded bore in the foot. An adjusting knob is attached to the upper end of the stem. The adjusting knob is positioned above the foot, preferably recessed in a cavity formed in the top side of the foot. A user can readily manipulate the knob and rotate the stem to draw the support toward the foot or move the support away from the foot and thereby level the table.

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: 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: A spindle press (1) comprises a housing (3) with an upper part (2) and a lower part (5). A press spindle (16) is supported with an upper bearing (14) in a cover (11) of the upper part (2) and with a lower bearing (19) in the lower part (5) so as to be rotatable. The press spindle (16) comprises a hollow spindle body (27) with perforations (38) for pressed out fluid, compressor wings (56) and worm wings (57) being placed on the spindle body (27) externally. Interruptors (26), which are fastened at the housing (3), extend between these wings in a plurality of axial planes. The housing comprises a screen casing (22) permeable for the pressed out fluid and also a spray casing (21) at a distance outside of the latter. The pressed out fluid is guided away through a dewatering arrangement (30) of the lower part (5). The lower part (5) rests on a vertical frame (7) which encloses a telescoping drive pipe (52) and, further down, a drive arrangement (12) which drives the drive pipe (52) in a rotating manner.

Abstract: A screw press comprises a housing having a spray casing and a screen casing arranged within the spray casing and forming an annular space therebetween, at least one press spindle located within the screen casing and forming a pressing space therebetween, the at least one press spindle having a plurality of wing members and at least one axial zone free of the wing members, and at least one dewatering member which is supported by the housing and located in the at least one axial zone in the pressing space between the spindle body and the screen casing, the at least one dewatering member being hollow and provided with a plurality of perforations and also having an outlet which opens into the annular space between the screen casing and the spray casing, the at least one dewatering member being arranged at a radial distance from the spindle and the screen casing, and at least one carrier holding the at least one dewatering member.

Abstract: A spindle press comprises a housing with a circular cylindrical upper part and a lower part. A press spindle, which is drivable in a rotating manner via a drive pipe by a drive arrangement, is supported in an upper bearing and a lower bearing of the housing so as to be rotatable. A spindle body of the press spindle carries worm wings on the outside and compressor blades farther above, which all extend in the vicinity of a screen casing of the upper part. The screen casing is enclosed at a distance by a spray casing and provided with holes for pressed out fluid only from the compressor blades down. The spindle body also comprises perforations for the pressed out fluid only from the compressor blades down. Above the compressor blades a helically constructed front wall is welded in between an annular wall and the screen casing which is unperforated at that point. On the lower side of the front wall, wet pulp arrives tangentially through a filling opponent of the upper part.

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 worm press for mechanically separating liquid/solid mixtures comprising a feed region and a pin-barrel pressing region. The worm has at least one flight, each of which flights is interrupted so as to enable the flight to pass the stationary pins in the pin-barrel region. The downstream ends or points of the worm flight portions formed by the interruptions are specially shaped in order to increase considerably the strength and service-life of the highly stressed points. This is achieved by reducing the size of the thrust flank, so that the flank subtends an angle of from 20.degree. to 50.degree. relative to the line perpendicular to the worm axis. Desirably, the thus-angled profiled tip region of the flight portions are interchangeable.

Abstract: The press installation includes a screw rotatably mounted in a cylinder. A very high pressure is produced to separate liquids from a mixture, with the separated liquid being drained off through bore holes in stationary pins at the location where it is released. In the discharge zone, the screw is devoid of threads whereby the annular cross sectional area between the screw core and the cylinder is increased. This extends the retention time and thus the amount of dehydration of the material as it passes through the discharge zone. Additionally provided in the discharge zone are annular offsets around the screw core in the vicinity of the pins, which prevent the penetration of solids into the drainage bore holes.

Abstract: A bark processing machine comprising a cylindrical tube with a driven screw disposed therein has a helical member on the screw formed by a plurality of highly abrasion-resistant and interchargeable segments. Preferably the segments have a stepped seat co-operating with a stepped seat on the pressure side of a base member of helical form welded to the core of the screw, the segments being secured to the base member by screws.

Abstract: An extraction device for extracting liquids from liquid-solid mixtures comprising a screw rotatable in a barrel the screw having at least one flight helically disposed thereon to define the screw thread, the flight having gaps formed therein, the gaps being dimensioned so as to correspond to the diameter of pins extending radially through the barrel towards the screw axis, the pins having axial bores formed therein for the discharge of liquid the bores being open in the direction of the axis of the screw. The bores are connected to a liquid discharge network.

Abstract: A worm press, especially for pressing vegetable matter, e.g. in the pressing of oil from oil-bearing seeds and fruits, comprises a worm having a plurality of worm sections and a housing within which the worm rotates and which is formed with rings defining axially spaced constrictions for the pressed mass between the worm sections. The worm has annular frustoconical shoulders juxtaposed with frustoconical flanks of the respective rings so that the flanks of each ring and shoulder define a respective constriction which is of a width adjustable by relative axial displacement of the worm and the housing, the rings being fixed in the housing and the shoulders being fixed on the worm.

Abstract: A chips-deoiling machine, which is characterized in that a group of separators consisting of a number of single separators being spaced controllably in equal intervals in relation to the neighboring separators, which group of separators is provided within a carrying passage through which chips thrown into a chips-charging port are carried toward a chips-discharging port with the aid of the rotation of a screw shaft, and that the cutting oil contained in said chips is separated through the respective gaps between said single separators in the process of said chips passing from one side of the interior of said group of separators toward the other side.

Abstract: A multistage continuous rotary screw press assembly with the helical or spiral collars, vanes or ribs of each stage within the casing separated from those of an adjacent stage in the direction of material feed through the casing by a transition zone in which fixed material impingement elements, for example, knives, are mounted for dividing the material as it is expressed from one stage to the next adjacent stage in the material feeding direction.

Abstract: A screw conveyor which is particularly used for feeding in and compressing ligno-cellulosic material, such as wood chips, shavings, bagasse, sawdust and similar compressable material. The screw conveyor comprises a casing having a bore which tapers conically from a material inlet and to a material outlet end. A screw feeder having helical flights and an intervening spiral groove rotates within the bore to advance the material fed into the casing towards the outlet end while being progressively compressed into a plug. The casing has an opening in which stopper means move in a closed circuit to successively engage the spiral groove during the rotation of the screw feeder, thereby preventing the material from rotating and thus allowing it to be continually advanced while being progressively compressed.

Abstract: A rotatable pressing spindle is mounted in a housing which surrounds it and which has an upper section, a lower section and a middle section. The middle section includes a self-supporting outer jacket and a tubular screen received with radial clearance in the outer jacket. Mounting elements are provided on the outer jacket, extending inwardly thereof and mounting the screen on the outer jacket, and connecting elements connect the outer jacket with the upper and lower housing sections, respectively. Other features are also disclosed.

Abstract: An interrupted flight screw press is provided, especially in regions of heavier wear, with one or more longitudinal split worm bodies. The bodies have axially extending end flanges which hook underneath flanges of adjacent collars to hold the worm in place. One or both of the worm bodies are keyed or otherwise fastened to the shaft for driving. Relatively slight longitudinal movement of one or both adjacent collars will release the parts of the worm body for repair and/or replacement without disassembling the entire worm-collar-shaft assembly.