Abstract: A co-rotating twin-screw kneader has a casing which has two axially parallel bores, defined by the casing wall and which intersect with one another in a region to form gussets in said casing wall adjacent the intersecting region. Two axially parallel shafts which are arranged to be driven in the same direction of rotation are each arranged in a respective one of the bores and multi-flight kneading disks having crests associated with the casing wall are mounted in non-rotary manner on at least part of the length of each shaft. Each kneading disk on one shaft is associated with another disk on the other shaft in a plane perpendicular to the axes of the shafts and the disks are arranged to be moved past one another in a virtually clearance-free manner in the intersecting region of the bores.

Abstract: A method and apparatus for removing stringy contaminants from a pulp in a wastepaper recovery system having a pulping vat with an elongate helically shaped rod in the vat with means for causing a relative rotation between the stock and the helical rod so that long slender contaminants will be captured and climb the rod. In one form, multiple helices are employed and the rods may be driven in rotation, or the stock caused to rotate about the helix by other means.

Abstract: The present invention comprises a pair of agitator blades which have a plurality of annular members connected to each other and which are provided in parallel in a cylindrical vessel body, the agitator blades being held so that the edges of one of the agitator blades enter the rotational region of the other agitator blade and pass therethrough. Consequently, the invention prevents liquid to be treated from adhering to and rotating together with rotational shafts and the agitator blades and deterioration in product quality due to scaling so as to enable the continuous treatment of a highly viscous material.

Abstract: A double-shaft forced-feed mixer, for example for building material mixtures, is proposed which is assembled according to the principle of movement of the batch-type mixer and is usable both for continuous and discontinuous operation.

Abstract: A closed mixer having rotors whose axial separation is adjustable, comprising an external casing containing a mixing chamber housing two rotors with projecting lobes operating at a limited distance from one another, and caused to rotate by a motor unit via transmission means, wherein the rotors are equipped with end shafts, having a relatively small diameter, rotatably supported within opposite heads of the external casing by means of supports housed within elements which can move and be locked in a number of positions, as a result of moving which elements the distance between the axes of the rotors can be varied, there being provided holding means between the rotors and the heads of the chambers across which they extend, in order to ensure that the axial separation of the rotors is held in the various positions.

Abstract: A viscous liquids feeder for an extruding machine including a first container having a pair of cone-shaped rotors and a second container having a screw, the first container being jointed to the second container at a given angle so that the mass of viscous materials in the first container can be extruded into the second container in which the material is fed by the screw toward the mold provided at the head of the second container.

Abstract: A screw conveyor type drying apparatus has a plurality of hollow drive shafts each having a plurality of hollow feed vanes located on the respective drive shaft along an imaginary helix positioned on the outer peripheral surface of the drive shaft. The drive shafts are driven so that adjacent drive shafts are rotated in mutually opposite directions, whereby a material to be dried is conveyed. A heating fluid supply device feeds heating fluid into the hollow internal of the feed vanes through the hollow drive shafts, whereby the material coming in contact with the feed vanes during conveyance is heated and dried.

Abstract: A conditioning device for an extruder includes two juxtaposed, frustocylindrical, intercommunicated chambers, one chamber of which has a greater cross sectional area than the other chamber. A mixing shaft centrally located within the small chamber carries a number of radially extending beaters which rotate at a speed twice that of the rotational speed of paddles mounted on a second mixing shaft located in the large chamber and material introduced into the vessel is passed from side-to-side between the two chambers while being advanced along the length of the vessel. The use of relatively fast moving beaters within a small mixing chamber in combination with relatively slow moving paddles in a larger mixing chamber enables flour-like materials to be properly blended with water with both sufficient agitation and proper retention times within the vessel.

Abstract: Material mixing apparatus and methods wherein a barrel defines a mixing chamber, a pair of parallel mixing shafts extend within the barrel chamber and are driven in the same direction of rotation and at the same speed of rotation, mixing elements are on each of the shafts in radial interwiping relation, the barrel has a pair of radially separated, reduced cross-section, annular discharge chambers through which the shafts extend, and one of the discharge chambers has a radial discharge port interjacent its ends, the barrel has a cross-sectionally enlarged end pass chamber through which the shafts further extend at the ends of the discharge chambers, the end pass chamber being of such cross-sectional volume relative to the conveying capacity of the other discharge chamber, as to operate in a partially starved mode at substantially atmospheric pressure, radially aligned paddle portions are on each of the shafts in the end pass chamber, shaped to wipe one another and the end pass chamber wall, one of the shafts h

Abstract: A mixing arrangement (113) for mixing volatile materials (118, 119) in a mixing container (114), including mixing blades (118, 119) and a drive mechanism (117), at least one of said blades (118, 119) holding a temperature detection arrangement (250) effective for detecting bulk temperature levels in said materials during mixing operation and thereby enabling control of the velocity of the mixing blades (118, 119) in the materials being mixed, said temperature detection arrangement being effective for external communication of information developed during detection operation.

Abstract: A method and apparatus adapt a beater/whipper unit to be used in food processor bowls of varying diameter which have upstanding side walls wherein a revolving head of the beater/whipper unit is mountable on an upstanding central well of each working bowl. The revolving head carries a pair of closely spaced counter-rotating beaters which extend downwardly from the revolving head toward the bottom of the bowl so that the beaters are revolved around the central well by the revolving head. A deflector blade having an inclined front surface is detachably mounted on the revolving head when the beater unit is intended to be used on a working bowl having an upstanding side wall of a first predetermined large diameter. The deflector blade is inclined radially inwardly with respect to the direction of travel of the revolving head for deflecting ingredients in the bowl inward from the side wall toward the counter-rotating beaters.

Abstract: The discharge apparatus comprises an at least four-shaft screw pump having engaging shafts (1,2,3,4) which rotate in opposite directions in pairs. The viscous product to be processed is caught up over a large area and removed by the screws. A double shaft screw pump is connected downstream of the actual collection zone as a pressure build-up zone. The two center screws (2, 3) of the collection zone merge equiaxially into the screw shafts (2a, 3a) of the pressure build-up zone. The collection zone and the pressure build-up zone are combined into one constructional unit. At least one screw shaft is driven. The resulting high viscosity product strands (7) are caught up by the screws in the collection zone and are moved on into the pressure build-up zone. The double shaft screw pump is used for the build up of a high operational pressure and thus provides the prerequisite for the subsequent connection of further procedural stages.

Abstract: A roller-mill for mixing and plasticizing materials, comprises two tempered, rotatable rollers which are operable at different circumferential speeds. The rolls are long and are provided with angular grooves which are inclinedly disposed relative to the axis of rotation of the rolls. The grooves on the two rolls extend in opposite directions to one another. The grooves producing biaxial shearing in the nip between the rolls because material is reliably fed into the nip. The grooves also produce a simultaneous, axial conveying of the material. Along the roll nip, various materials which are to be mixed can feed-in simultaneously or successively and, depending upon the intended purpose of the end product, the materials are removed from the device for further processing in either a partially plasticized state or in a fully homogenized state, as desired.

Abstract: An apparatus for producing a homogeneous flexible layer of material such as butter or margarine, comprising an input portion for guiding blocks of said material into a central portion, in which two rotors 11, 12 are arranged in a horizontal plane, a central region 33 between said rotors 11, 12 lying beneath said input portion and are driven in opposite directions, each rotor being provided with a number of axial blades 22, 23 radially displaceable in slots and guided by guiding means at the ends thereof.

Abstract: A twin screw extruder drive system includes a pair of parallel juxtaposed output shafts each of which is fixed to a sun gear of a planetary gear set. Each gear set includes a plurality of planet idler gears which are only rotatable about their axes and engage both the sun gear and a ring gear. Symmetrically disposed about the circumference of the ring gear are at least two drive pinions. The two gear sets have parallel axes and are axially offset from one another with the output shafts extending through a space between the planet gears of the other gear set. In one embodiment each drive pinion is driven by a separate electric motor and all motors are electronically and mechanically speed synchronized. A single electric motor is employed to drive all drive pinions in an alternate configuration.

Abstract: Counter-rotating intermeshing rotors are employed to generate films of viscous material to enhance processing. The rotors are configured that they trap viscous material in open-ended chambers defined by the rotor surfaces. As rotation proceeds the chambers decrease in volume and the material is expelled through the ends of the chambers as a film. Longitudinally adjacent rotors each have a different angular orientation about their centers of rotation to provide a sawtooth stepped helix to convey material longitudinally.

Abstract: A splatter shield is provided for use with a conventional portable mixer having a speed control switch and a pair of laterally spaced drive sockets. A pair of beaters each includes one end portion adapted to be detachably secured within the drive sockets, a shaft having a generally circular member for keeping the ingredients being mixed out of the drive sockets, and beater blades at the opposite end portion. A mixing bowl holds ingredients to be mixed by the beater blades and a splatter shield having a flat bottom is operably disposed on the rim of the bowl for preventing the escape of ingredients therefrom when the mixer is in operation. The shield is preferably made of polypropylene for ease of cleaning, unbreakability and chip-proof characteristics. A central portion of the top integral surface is raised and reinforcing ribs are disposed about the periphery of the top shield surface and radially in toward the raised portion.

Abstract: Multishafted, continuous mixing and kneading of plastifiable compounds using mutually engaging worm elements which rotate in the same sense, at a constant axial separation. Along the direction of advance, the worm elements have successive zones with different numbers of threads. Each zone with the smaller number of threads follows a zone with a larger number of threads. The worm elements mesh with one another in successive zones so that the worm element of one zone has a self-cleaning action upon one another, and the zone with the smaller number of threads has a housing with a larger interior bore and larger corresponding worms than the zone with the larger number of threads, so that, in the zone with the smaller number of threads, the free cross-section is larger than in the preceding zone. Both zones have fill openings that can be charged independently of one another.

Abstract: An apparatus for processing viscous substances or substances which can be made viscous during processing has a casing, in whose bore is arranged a rotatable disk rotor, which comprises a shaft provided with disks. The disks only have a limited clearance relative to the bore wall and define between them a chamber, which has an outlet in front of a damming-back point. In order to provide a self-cleaning construction of the disk rotors and particularly the damming-back points, at least two disk rotors are arranged in axially parallel, partly interpenetrating bores. The disks of one disk rotor project into the chambers of the other disk rotor and the outer circumference thereof is substantially clearance-free with respect to the shaft.

Abstract: An apparatus for mixing or homogenizing viscous material is disclosed. Stirrers, comprising multiple vane mixing blades are mounted on a pair of parallel shafts in corresponding spaced apart parallel tiers. Each vane has a working surface inclined relative to the shaft and offset relative to the vanes of an immediately adjacent blade. One shaft is advanced relative to the other so that the vanes intermesh. The inclination of the vanes in one blade is mirrored in sense to the other blade on the adjacent shaft, and the shafts are rotated in opposite sense so that the stirrers in each tier pump the material in the same relative direction when the shafts are so rotated.

Abstract: A mixing apparatus for blending one or more relatively viscous liquids into a homogeneous mixture, the apparatus including a fixed vessel, a pair of rotors rotatively housed in the vessel, each rotor rotating on its own rotary shaft, the rotary shafts being rotated in opposing directions, the rotors having helical mixing vanes thereon wound oppositely in directions and differently in number, wherein the outside diameters D.sub.1, D.sub.2 of the rotors, the distance A between the rotary shafts, the rotating angular velocities of the rotors, and the number of the helical vanes are defined by the numerical criterion: A is smaller than 1/2(D.sub.1 +D.sub.2), and the ratio between velocities of the rotors is equal to the inverse number of the ratio between the numbers of the helical mixing vanes.

Abstract: Pigment dispersion is manufactured by continuously flushing pigment press-cake. First and second troughs supply hydrophobic liquid organic media and the pigment wet-cake respectively at a constant rate to a twin screw co-rotating extruder having a L/D (length/diameter) value of 25 or more. The twin screw co-rotating extruder includes a feeding part where the hydrophobic liquid organic media and the pigment wet-cake are fed from the first and second troughs, a flushing part for flushing the pigment particles from water phase to form an organic medium phase, and a dehydrating part for removing water from the flushed mixture. The hydrophobic liquid organic media and the pigment wet-cake are fed to the twin screw co-rotating extruder, and the pigment press-cake is flushed and dehydrated continuously in the extruder to obtain the pigment dispersion.

Abstract: In a polymer finishing vessel of the type described by Pinney in U.S. Pat. No. 3,717,330 the vent opening is shaped so that its lower edge in the lid of vessel is continuously overlapped by the upper surfaces of the co-rotating screw elements within the vessel in each of their revolutions while leaving no part of the agitator tips continuously exposed to the open vent area.

Abstract: An improved mixing apparatus involves a vessel having an interior surface in the shape of at least two intersecting conical frustums with axes parallel and substantially vertical. At least two interengaging helical screw elements are rotatably mounted within the vessel such that when co-rotated they interengage along their length and also conform to the interior surface of the vessel to effect a complete cleaning of each other and of the interior surface of the vessel. The bottom portion of the screw elements form a pressure generating zone and the upper portion of the screw elements form a mixing zone having a hollow center described by the co-rotating screw elements. In the mixing zone each screw element includes a continuous transition from a multilobal cross-section, e.g., trilobal cross-section (bounded by three equal arcs), to a circular cross-section. The circular cross-sections of the screw elements in the upper part of the mixing zone, i.e.

Abstract: A continuous mixing machine for mixing a material fed at one end and discharging the mixed material through a discharge orifice at another end in a continuous sequence which includes a plurality of rotors each provided with mixing blade members, a mixing chamber encircling the plurality of rotors and a throttle member defining a part of the mixing chamber at a position facing the blade members and adapted to be moved toward and away from the rotors so as to vary the space within the mixing chamber. In a modified machine, the mixing chamber is provided with a vent hole at a position intermediate the throttle member and discharge orifice.

Abstract: A two stage extruder comprising a first, vertical extruder and a second, horizontal extruder with the working chambers of the two stages connected by a connecting passage and off-set from one another so that each lies at a tangent to the other in a region which is a lower outlet region of the vertical stage and a drawing-in region of the horizontal stage; the vertical stage has a plasticizing portion with a planetary arrangement, a screw shaft supported in a lower axial pressure bearing and a butting ring for the planetary spindles disposed on the screw shaft. A lower cylindrical liner for the vertical stage has an aperture therein and the effective size of the connecting passage can be adjusted by rotating the liner.

Abstract: A throttle device for a twin-shaft screw machine having a housing with two mutually penetrating bores in which respective screw shafts are arranged. Each bore has an outer gap sleeve and each shaft has an inner gap sleeve, the sleeves being mutually axially displaceable in order to generate or modify a throttle gap therebetween. The throttle gaps are formed, in each case, between cylindrical outer circumference on the respective inner gap sleeve and a cylindrical internal bore on the respective outer gap sleeve to provide an annular cylindrical gap of constant width but variable length. Each outer gap sleeve is connected to at least one sliding bolt which passes through an associated slot in the housing and through which the outer gap sleeve can be moved axially from outside the housing.

Abstract: The present mixer for construction materials, such as a bituminous sludge, has a trough with an inlet and an outlet and two mixing shafts equipped with blades rotatably supported in the trough in parallel to each other. The blades are uniformly spaced along both shafts and staggered by 90.degree. around each shaft whereby the blades of each shaft follow one another in helical succession. Simultaneously the blades form four in line rows on each shaft. The arrangement of the blades is identical on each shaft except that the helix formed by the blades on one shaft has preferably a pitch direction opposite to that formed by the blades on the other shaft since the shafts rotate in opposite directions but convey in the same direction. The spacing between adjacent blades on both shafts is the same. However, blades located in the same plane extending perpendicularly to the longitudinal axes of the shafts are always spaced by 90.degree.

Abstract: A biaxial vent extruder for processing of slurry-like waste fluids or radioactive waste fluids having a hopper cylinder having a solidifying substance port and a solidified substance port. A plurality of vent cylinders each having a vent port are provided with a plunger type scraper. An extruding cylinder having a single opening for a main screw is connected to the assembled vent cylinders. The main screw extends to the upstream end of the extruding cylinder and a sub-screw extends to the extruding cylinder. The screws each having a full flight engaging the other and a set of rings are mounted on the screws near the respective vent port inlets. The screws are rotated in different directions and inwardly with respect to the vent ports. Rotors may be mounted on the screws to break down solid particles.

Abstract: An internal mixing apparatus for mixing plastic materials, especially raw rubber, has a mixing chamber defined by substantially parallel cylindrical individual chambers. Each of these chambers holds a rotating shaft and the two shafts rotate in opposite directions. In one embodiment of the invention, the shafts have a cylindrical outer surface on which is disposed at least one principal conveying and mixing vane. The vanes on the two parallel shafts are disposed in mirror symmetry so that the ridges of the vanes roll off against one another with or without contact. The principal vanes terminate ahead of the end faces of the mixing chamber, thereby defining free passages permitting the transverse motion of the material to be mixed. Within these passages, the shafts carry scraping vanes for preventing the accumulation of stationary material.

Abstract: A screw extruder for processing rubber or plastics material, comprising a cylinder jacket with a feed hopper, a central geared shaft and geared planet shafts disposed between the central shaft and the cylinder jacket and drivably engaged with the central shaft and the cylinder jacket, wherein parts of at least some of the planet shafts are bare of gearing.Advantageously each alternate planet shaft is only partly geared, the gearing extending for only approximately half the length of the shaft, at one end or the other end or in two quarter length portions at the opposite ends. Alternatively each third planet shaft is only partly geared.Preferably each geared part of a planet shaft which is only partly geared overlaps with a geared part of the planet shaft which follows it in the direction of rotation.

Abstract: The invention relates to self-scraping mixers comprising a fixed case, at least two blades whose cross-sections are defined by at least two arcs of a circle of the same length and the same radius, and means for rotating said blades so that their edges scrape the whole area of inner face of the case as well as that of the outer faces of each blade. According to the invention, the mixers are of a conical type.

Abstract: A mixer and/or heat exchanger for flowable compositions includes dual, parallel, interconnected cylindrical mixing chambers through which intermeshing, counterrotating bladed mixer elements extend. The mixer blades sweep virtually the entire inner surface area of the chambers and the entire volume within the chambers. The interconnection between the chambers is designed to minimize unswept space within the chambers, and heat exchange medium is circulated around the chambers so the system can be used to heat or cool the composition moving through the mixer.

Abstract: An apparatus for automatically wetting and mixing glass batch immediately prior to its introduction into a glass melting furnace. This apparatus is an axillary extension of a typical glass furnace charger hopper and provides for complete glass batch wetting and mixing immediately adjacent the glass melting furnace so as to minimize the possibility of batch "dryout" and similarly thereby minimize atmospheric dust pollution and other associated problems. Mixing action is continuous and the apparatus is arranged such that a fluid, normally water, is added to and mixed with the batch responsive to charger operation. The apparatus is structured in such fashion to emphasize mixing rather than material conveyance, thus reducing wear upon the structural elements while at the same time providing complete and uniform wetting of the batch within same.

Abstract: This invention relates to a screw processor having multiple fully intermeshed co-rotating in-phase screws each provided with equal numbers of threads, each of said screws having longitudinally staged eccentric cross-sections preselected so that at least one thread of each screw spreads process material over the barrel bore and at least one other thread of each screw collects said process material and transfers it to a co-acting screw, which thereupon repeats the spreading-collecting-transfer cycle.

Abstract: The device for irradiating liquid and pasty substances with high energy electrons in order to pasteurize or sterilize the irradiated substances and to enrich them with one or more additives, comprises a pair of cylindrical circulation members rotatably mounted in said housing and having radially extending helical blades. The members are located in a housing which has the shape of a solid figure eight formed of two tubes connected together and the walls of the housing conform to the path of the movement of the radial tips of the blades with a close clearance. The housing has an inlet for the substances to be irradiated at one end, and an outlet at the other end of the housing which is located between the axes of the rotatable members. The top of the housing has an irradiation opening between the axes of the circulation members and an electron deflecting horn of an electron beam radiating means has an electron accelerator disposed over the irradiation opening for directing a sweeping electron beam thereover.

Abstract: A plurality of agitation spindles are disposed, and an agitation vane is attached to the lower portion of each agitation spindle. A mixing and kneading zone for mixing and kneading soft soil with a hardener is formed so that the hardener is supplied near these agitation vanes. The agitation spindles are supported by reinforcing members and connecting members to construct a multiple spindle kneading apparatus for improving ground. In one embodiment, blade-like excavating cutters are mounted on the agitation spindles. In another embodiment, hollow agitation spindles are used and the hollow portions are used as hardener passages. In still another embodiment, a tube for injecting the hardener into the mixing and kneading zone is disposed so that it can be moved up and down. A method for hardening soft ground by using this multiple spindle kneading apparatus in which the hardener feed position can be changed is provided.

Abstract: A novel method and several different unique modifications of apparatus are disclosed for manufacturing a novel adhesive product. The product which results from use of the foam is a pair of substrates adhered together by compressed foam. The adhesive foam is created by intimately mixing air or any relatively inert gas with thermoplastic adhesive while the adhesive is in the liquid state and then pressurizing the liquid/gas mixture so as to force the gas into solution with the liquid adhesive. The liquid adhesive is subsequently dispensed at atmospheric pressure with the result that the gas is released from the solution and becomes entrapped in the adhesive to form a homogenous closed cellular adhesive foam.