Abstract: A lift station maintenance device having as its essential features, a circular housing constructed from bars, interleaving self-centering augers for lifting flushable wipes through the system, spring snap options for retaining the bar in slots in top and base plates, and capability to remove large flushable wipes or equivalent materials from liquid sewage systems without clogging. Also disclosed is a lift station maintenance system.

Abstract: A self-cleaning multiple helical auger conveyor for a processor has an array of pairs of opposite-handed, counterroatating helical augers with flights intermeshed such that the front of every flight is cleaned by the back of another flight and the back of every flight is cleaned by the front of another flight. Optionally, the flights are shafted and the periphery of every flight and the shaft of an adjacent flight mutually clean one another. Rectangular and polar arrays of such paired flights are described, along with relationships among flight thickness, clearance, pitch and number of flights. A flight having a coined surface and a cleaning tab projecting therefrom is described. Support, gearing and housing for various embodiments of the conveyor are described.

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

Abstract: A cotton module building apparatus, utilizing imaging apparatus operable for capturing real-time images of the module building process, including accumulated cotton in the module building chamber, cotton inflow, and the in-process cotton module, and a method for building a cotton module using the images. The imaging apparatus includes a camera or cameras disposed at advantageous locations about the module building chamber, and cotton is distributed and moved within the chamber responsive to the images, for advantageous placement and distribution for forming a module having a desired consistency and top shape. Imaging apparatus can also be provided for observing unloading of a module from the chamber, and for facilitating maneuvering and positioning the unloading apparatus.

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

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

Abstract: A cotton receiving and densification apparatus for an upper region of a cotton module builder adapted for receiving a plurality of side-by-side flows of cotton and air and converging and densifying the cotton for distribution and conveyance downwardly into the module builder, including a cotton receiving chamber which tapers into a cotton densification chamber, both chambers being located above and downwardly opening into an upper region of a cotton compacting chamber of the module builder, the apparatus being capable of remaining intact when the module builder is collapsed for transport and storage.

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

Abstract: 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 flighting 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: 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: 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: This invention relates to a in-vivo diagnostic method based on near infrared ra ation (NIR radiation) that uses water-soluble dyes and their biomolecule adducts, each having specific photophysical and pharmaco-chemical properties, as a contrast medium for fluorescence and transillumination diagnostics in the NIR range, to new dyes and pharmaceuticals containing such dyes.

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 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 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 counter-rotation twin-screw extruder for extracting a juice by squeezing vegetables and/or fruits has mutually engaging screws mounted to two mutually parallel rotary shafts which rotate in mutually opposite directions. The screws are enclosed inside a screen structure made of a curved member made of a stainless steel plate and having slits through which juice is collected.

Abstract: A double-screw press for separating a liquid from a two-phase solid-liquid material includes a hollow barrel and two screws disposed in the barrel. The barrel comprises a plurality of detachable barrel plates and a plurality of spacers disposed between the barrel plates and cooperating with the barrel plates in defining slits. The screws are arranged side by side with a gap defined therebetween, and are rotated by a motor to move a material, which has been charged into the barrel, efficiently from an upstream end to a downstream end of the barrel. The barrel plates and the screws have respective passages connected to cooling water sources, which supply cooling water to keep the temperature in the screws and the barrel at a desired level. The charged material is crushed and mixed in the gap between the screws, and oil is expressed from the material when it is compressed in the barrel. The expressed oil is discharged through the slits and collected in a container.

Abstract: Described herein is an internal mixer of the type including a mixing chamber rotatably accommodating mixing rotors therein, a hopper frame erected on the mixing chamber, a charge hopper provided on one lateral side of the hopper frame for charging a mixing material therethrough, and a floating weight provided in the hopper frame for upward and downward movements therein, the floating weight being held in an upper lifted position when charging a mixing material into the mixing chamber and then lowered into a pressing position in a mixing stage to apply pressure on the charged material in the mixing chamber, wherein the floating weight is dimensioned to have an axial length sufficient for closing an inlet opening formed in the side wall of the hopper frame in communication with the charge hopper, when in the lower pressing position, and lift means for lifting the floating weight up and down in the hopper frame is provided separately from a pressing means with a function of pressing the floating weight resilient

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: Screw press with one or more screws having a sieve surface. The screw is fabricated to have a reinforced construction by way of a rigid main stem portion disposed radially inwards of a rigid sieve-forming surface portion and reinforcing ribs disposed between these portions. Screw threads of the screw are secured directly to the sieve-forming surface portion while a drainage duct for draining fluid from the latter portion is formed between this portion and the main stem portion.

Abstract: Screw press arrangement having two or more screw threads arranged side-by-side in a relatively tightly fitting press basket having openings for the drainage of fluid from the material which is fed into the press. At the feeding-in portion the core of the screw element has a relatively small diameter while the screw threads have a large diameter and at the discharge portion the core of the screw elements has a relatively large diameter while the screw threads have a small diameter. Cylindrical sections of the press basket are employed over the largest part of the length of the press and conically tapered sections of the press basket serve as transition and discharge sections respectively. Provision is made for about 20% of the total length of the screw element in the form of the discharge portion to have a uniformly increasing core diameter towards the discharge end and a uniformly decreasing press basket inner diameter.

Abstract: In a refiner for treating cellulose pulp or similar material of the type comprising two intermeshing rotary screws operating in a housing having a material inlet and a material outlet, the surface of each screw comprises a feeding thread section merging into a feed-resisting surface section, the outlet being provided in a side-wall of the housing near the zone where the feeding thread sections on both screws end and the feed-reversing surface sections begin. The outlet opens into an outwardly flaring collar having a plane mouth opening oblique in relation to the direction of material discharge through the material outlet. The mouth opening cooperates with a closure element to restrict the outlet area to control working pressure conditions within the housing.

Abstract: A barrel assembly for a twin screw mixer or similar device is especially designed for ready access to a replaceable split liquid tight barrel liner which is accurately held in seated position within a housing block by a minimum number of bolts or other detachable connectors. Housing blocks are formed with liner half receiving recesses defined by flat surfaces which include inwardly convergent side walls and a flat inner wall. The liner half is of complementary shape and projects slightly from the recess, when seated in the recess so that closing of the housing blocks engages abutting surfaces on the two liner halves to clamp these surfaces against each other during operation of the machine. The housing blocks are mounted upon the machine frame by brackets for swinging movement about horizontal axes, meshing pinion gears couple the housing blocks to each other so that the weight of one housing block is counterbalanced by the other during opening and closing movements.

Abstract: A dual worm extruder includes a worm housing having a cavity and a wear resistant insert accommodated in the cavity. The insert has two parallel extruder bores defining, when viewed together in cross section, passages of circular areas having an overlap. The outer surface portions of the insert situated on opposite sides adjacent the overlap are peripherally concave, whereby the cross-sectional outline of the insert has the shape of an hourglass.

Abstract: The continuous treatment of a cellulosic material in the form of chips to produce at least partial delignification of the material without true mechanical grinding is effected in apparatus comprising two parallel meshing screws which are rotated in the same direction in a sheath and have identical threads providing a plurality of zones of different pitch. The material is passed in succession through a first zone for feeding the material downstream, a first braking zone for causing a first compression of the material, a second zone for feeding the material downstream and in which the material is brought into contact with a reagent, e.g. steam or a chemical reagent, and a second braking zone for causing a second compression of the material.

Abstract: Clarifier sludge is dewatered to a relatively low residual moisture content by passing it axially in one direction through an inner centrifuge drum in which initial dewatering takes place in a first centrifugal force field. Immediately thereafter the solids phase is introduced into an outer second drum having a diameter approximately twice that of the first and in which the solids are subjected to a centrifugal force field about twice as great as the first force field. In each drum the solids are displaced by wipers or scrapers (strippers) preferably of the worm type and the liquid is drawn from the drum at the opposite axial end from that at which the solids are removed.

Abstract: A screw extruder comprises a casing connected to a bed, the casing comprising two portions connected together longitudinally by connecting elements. At least one of the casing portions is articulated with respect to the bed, and the connecting elements are adapted to release the connection between the casing portions at a predetermined casing pressure to allow the casing portion to articulate to thereby open the casing.

Abstract: A spiral-line press with a double contra-screw arrangement fixed on a single shaft. Each of the screws on the spiral-line press have a length/diameter ratio of less than or equal to 14/1 and a combined L/D - ratio of less than or equal to 28/1. In addition, the phase depth of the metering zones are less than or equal to 1/25th of the spiral diameter and the peripheral speed of the spiral-line press is greater than or equal to 0.3 m/sec. The output from the metering zones of the spiral-line press are extruded by an outlet fitting which transforms the flows of the extruded matter so that one output is extruded concentrically around the other.

Abstract: A screw housing with a wearing insert for a two-shafted screw machine wherein the wearing insert has two spaced parallel bores to accommodate screw shafts located with their mutually parallel longitudinal axes in the principal plane of symmetry of the wearing insert. These shafts are spaced apart so as to form saddles at the connecting point of the bores. The insert housing has an external cross-section which is substantially constant along its axial length and is arranged in a cavity of the screw housing having the same cross-section.