Abstract: A rotor (1) for use in a comminuting apparatus (100) is described and claimed. The rotor (1) includes a hub (2) rotatable about a first axis (A) and one or more disc members (4) for comminuting material. The disc members (4) are secured to the hub (2) and rotatable about a second axis (B), removed from the first axis (A). Drive means is provided to simultaneously rotate the hub (2) disc members (4) about their respective axes. Guides (11) may be provided below the disc members (4) to remove comminuted material after it has passed through a screen (10). The screen (10) may include base portion (10A) and side wall portion (10B), the side wall portion (10B) extending up to a level approximately level with the disc members (4). The guides (11) may include arms (11A) extending up beside the side wall portion (10B). A comminuting apparatus (100) including a rotor (1) is also claimed.

Abstract: The present invention relates to an impact crushing apparatus that mills grain between a milling cylinder and a screen. Each of a plurality of blades mounted along the circumference of the milling cylinder comprises a columnar body with a square cross section, cutting tools disposed on all ridges of the columnar body, and mounting parts formed at the top and bottom of the columnar body. Each blade is attached to the milling cylinder in such a way that any one of the four directions of the blade can be selected by rotating the blade around the central axis of the columnar body.

Abstract: A comminution machine has a machine housing and a closed working cylinder with comminution holes arranged therein. Tools are arranged on a coaxial shaft within the working cylinder. The tools have vanes revolving at a spacing of at most a diameter of the comminution holes practically contactless relative to the cylinder. The vanes have outer edges slanted counter to a relative rotational direction between cylinder and tools. The shaft orientation and the axial orientation of the cylinder deviate from a vertical line. The working cylinder has a first end face opening connected to a feed channel and a lower cylinder half connected to a removal channel. A second end face opening whose diameter is at least as large as the greatest diameter of the working cylinder, is closed by a freely accessible lid. The shaft extends from the feed channel to the lid but does not penetrate the lid.

Abstract: An apparatus for disintegrating waste matter preferably comprising a holding area for holding waste matter; and a fluid delivery mechanism for applying high pressure fluid to the holding area, wherein the high pressure fluid disintegrates the waste matter and applies a force sufficient to hydromechanically sever the waste matter. The holding area preferably includes a container bin having a bottom surface and an outer wall. Alternatively, the apparatus is a hand held device. An outlet port coupled to the bottom surface, wherein the disintegrated waste material exits the container bin via the outlet port. A fluid source coupled to the fluid delivery mechanism. The fluid delivery mechanism comprises at least one nozzle for applying a stream of highly pressurized fluid to the waste. The nozzle preferably includes a zero degree nozzle tip The fluid delivery mechanism comprises a column or a disk manifold, wherein the nozzle extends therefrom.

Abstract: Apparatus for screening pulp suspensions is provided, including a housing, a rotary screen within the housing, a screen chamber between the rotary screen and the housing, a reject outlet, an accept outlet, an outer screen surface defining the outer surface of the screen chamber, a bottom screen surface defining the lower surface of the screen chamber, a slot ring at the bottom screen surface and adjacent to a knob ring at the lower end of the rotary screen, and an adjustment screw for adjusting the size of the gap between the knob ring and the slot ring from outside of the housing.

Abstract: Size reduction machines including a screen holder that positions and secures a screen associated with the size reduction machine in place and also including an adjustable impeller for setting and changing a desired known gap between the size reduction machine impeller and frusto-conical screen.

Abstract: An ultra fine mineral compound and method of processing native Dead Sea minerals into this ultra fine mineral compound that can be used to manufacture all natural Dead Sea mineral compositions particularly compositions for use in bath and body products is disclosed. Even with the extreme ionic character of the Dead Sea minerals, the Dead Sea mineral compositions prepared remain in suspension creating a viable cosmetic preparation that can maintain adequate shelf life and provide a more pleasant feel for the consumer.

Abstract: The present invention relates to an impact crushing apparatus that mills grain between a milling cylinder and a screen. Each of a plurality of blades mounted along the circumference of the milling cylinder comprises a columnar body with a square cross section, cutting tools disposed on all ridges of the columnar body, and mounting parts formed at the top and bottom of the columnar body. Each blade is attached to the milling cylinder in such a way that any one of the four directions of the blade can be selected by rotating the blade around the central axis of the columnar body.

Abstract: An apparatus that pulverizes feedstock material with crushers injects a liquefied inert gas into the feedstock material, evaporation of the gas causing the material to become very cold, brittle, facilitating further processing. Very fine finished particle sizes, passing −200 micron mesh screens, result from the use of the apparatus. The apparatus generally requires little maintenance to achieve such small particle size as compared to mechanical crushers. Because of the effect of the inert gas upon the feedstock material, pulverization generally occurs by impact only. A method for pulverizing is also described.

Abstract: An ultra fine mineral compound and method of processing native Dead Sea minerals into this ultra fine mineral compound that can be used to manufacture all natural Dead Sea mineral compositions particularly compositions for use in bath and body products is disclosed. Even with the extreme ionic character of the Dead Sea minerals, the Dead Sea mineral compositions prepared remain in suspension creating a viable cosmetic preparation that can maintain adequate shelf life and provide a more pleasant feel for the consumer.

Abstract: An impact grinding apparatus for grains capable of obtaining ground product having a desired granularity without sifting the product after grinding or changing a screen cylinder as a whole. The impact grinding apparatus comprises an inlet for introducing material to be ground, a rotary disk arranged rotatably under the inlet and having a plurality of vanes arranged at a periphery thereof and directed in an approximately radial direction of the rotary disk, a screen cylinder stationary arranged outside the vanes of the rotary disk, an annular discharging path arranged outside the screen cylinder for discharging ground product. Each of the screen faces of the screen cylinder comprises a plurality of superposed screen plates arranged slidable with each other. The screen cylinder is constituted by a plurality of screen units stacked in the vertical direction.

Abstract: A tearing mill for comminuting fruits (3) is equipped with a tearing bed (15) with tearing elements (4) and delivery vanes (5) for the fruits (3). Directly upstream of the tearing elements (4) in terms of the delivery direction (v), openings (16) for the comminuted pieces of fruit (8) are disposed in the tearing bed (15). As a result, low mechanical stress on the comminuted product (8) and a small proportion of fine particles are achieved, which improves the yield and output in an ensuing juice extraction operation.

Abstract: An apparatus for disintegrating or beating stalk-, stem- and/or sheet-type regenerative raw material that includes a stator and a rotor is provided. The stator is configured as a sieve drum on whose inner wall radially inwardly-directed, teeth-like projections are provided as disintegration tools. The rotor has a rotor hub and a plurality of radially outwardly-directed arms mounted on the rotor hub, a plurality of axially-directed support bars mounted to the ends of the arms, and a plurality of radially outwardly-directed disintegration tools mounted on the support bars.

Abstract: A separating or deboning machine, for separating soft material such as meat from hard material such as bone, includes a separating chamber through which a flighted auger extends. The separating chamber has a series of perforations in a side wall, through which soft material passes upon rotation of the auger. Pressure is maintained within a flow passage defined by the separating chamber, which forces the soft material through the separations to the exterior of the separating chamber. The separating chamber is preferably formed so as to have a parallel-type wall structure, to provide a high throughput of material. The perforations are in the form of specially configured slots which provide low pressure passages for enabling soft material to pass from the flow passage to the exterior of the separating chamber. The slots are inclined in the direction of auger rotation in an upstream-to-downstream direction.

Abstract: An ultra fine mineral compound and method of processing native Dead Sea minerals into this ultra fine mineral compound that can be used to manufacture all natural Dead Sea mineral compositions particularly compositions for use in bath and body products is disclosed. Even with the extreme ionic character of the Dead Sea minerals, the Dead Sea mineral compositions prepared remain in suspension creating a viable cosmetic preparation that can maintain adequate shelf life and provide a more pleasant feel for the consumer.

Abstract: The invention relates to a vertical rotor mill, especially to an impact pulverizer or to a hammer mill for grinding granular material using impact tools (8). Said tools are fixed to a rotating, vertically arranged rotor (7) which is enclosed by a screen (9). The grinding chamber (19) is in turn enclosed by a conic housing (6). The aim of the invention is to simplify access to the screen (9) and to the impact tools (8), and to improve the operating characteristics. To this end, the cone (6) can be lowered together with the screen (9).

Abstract: In order to further develop a circuit grinding apparatus with a roller mill or roller press for material bed disintegration of granular material and with at least one integrated sifter, where the mill and the sifter are disposed within two stationary side walls between which a material conveyor ring is rotatably seated and can be set into rotation for an internal circulation of material in such a way that the rotatably seated material conveyor ring, which has a very large diameter and rotates in operation, is as light as possible and the rotary actuator is configured as simply as possible, it is proposed in accordance with the invention to dispose around the bottom circumferential area of the material conveyor ring more than two, for example four rolls supporting the ring on the bottom, where two adjacent bearing rolls in circumferential direction of the ring are positioned at the ends of at least one common rocker lever which, in turn, is supported on the machine frame via a tilting joint.

Abstract: A crushing device in a crusher includes a bucket-shaped body frame; plural ring members provided in the body frame in such a manner as to form steps at predetermined spaced intervals while diminishing their sizes gradually from the upper position toward the lower position, thereby to form a sieve with gaps as a whole; a teeth plate provided at the bottom portion of the sieve and having recessed teeth and protrusive teeth alternately formed on the inner surface thereof; a crushing shaft provided at a central portion of the body frame; and an inclined screw belt member mounted on the crushing shaft, for crushing pieces of concrete on the teeth plate in combination with the teeth plate.

Abstract: The food refiner comprises a sieve, provided with an inlet for a produce to be processed and an outlet for a waste product, at a centre of which a rotor extends from the inlet to the outlet and bears a plurality of spatulas which interact with an internal surface of the sieve, and a casing which surrounds the sieve and which is provided with an outlet mouth for extracted product. The spatulas can be oriented contemporaneously and with different orientations with respect to an axial direction of the rotor which, for this purpose, comprises an external jacket and an internal jacket which can, on command, translate relatively to each other so as to cause a positioning of the spatulas, made possible by a guided rotatable coupling of the spatulas in relation to the rotor.

Abstract: An apparatus for processing polished cereal to obtain no-bran cereal having a reduced size. The apparatus comprises a polished cereal processing section for removing bran remaining on surfaces of polished cereal by mixing granular material with the polished cereal so that the remaining bran is captured by the granular material, and separating the polished cereal with bran removed and the granular material with bran captured; and a granular material reprocessing section for reprocessing the granular material with bran captured and feeding back the reprocessed granular material to the polished cereal processing section for recycling the granular material. The granular material reprocessing section includes a screen tube for separating the granular material within a predetermined granularity range and a removing roller arranged to rotate in the screen tube for removing the bran captured on surfaces of the granular material fed into the screen tube.

Abstract: The present invention is an improved rotary granular material cutting apparatus and knife blade assembly. The apparatus comprises a perforated drum that may receive granular material into its interior. The grains of material extend through perforations in the spinning drum where they encounter a series of knife blades. The blades are arranged to form angles of contact with tangents to the spinning drum. Those angles of contact are steeper on the side regions of the spinning drum than on the bottom regions. The apparatus also includes a grooved interior baffle to disburse input material within the drum, and knife-mounting wedges that include toe or base stops to help secure knife blades in arrangement about the drum.

Abstract: In order to further develop a circuit grinding apparatus with roller mill or roller press for comminution of the material bed of granular material and with at least one integrated sifter, in which mill and sifters are arranged within two fixed side face walls with an interlying turnably borne material conveyor ring settable into rotation for an internal material circuit, so that seals between the fixed side face walls and the interlying material conveyor ring that is settable in rotation are no longer necessary, it is proposed according to the invention to combine the two fixed side face walls over a housing part that houses the rotatable material conveyor ring, especially a ring housing part, into a housing tightly enclosing the entire working space of the circuit grinding apparatus, and to arrange on the underside of the housing part at least one grinding material leakage discharge from the working space of the circuit grinding apparatus.

Abstract: In order to further develop a circuit grinding apparatus with a roller mill or roller press for material bed disintegration of granular material and with at least one integrated sifter, where the mill and the sifter are disposed within two stationary side walls between which a material conveyor ring is rotatably seated and can be set into rotation for an internal circulation of material in such a way that the rotatably seated material conveyor ring, which has a very large diameter and rotates in operation, is as light as possible and the rotary actuator is configured as simply as possible, it is proposed in accordance with the invention to dispose around the bottom circumferential area of the material conveyor ring more than two, for example four rolls supporting the ring on the bottom, where two adjacent bearing rolls in circumferential direction of the ring are positioned at the ends of at least one common rocker lever which, in turn, is supported on the machine frame via a tilting joint.

Abstract: This invention relates to an improved airflow hammermill assembly for grinding materials. More particularly, this invention relates to an improved airflow hammermill assembly for processing vegetable meals and cereal grains. The improved airflow hammermill assembly incorporates one or more diverging ducts communicating with the hammermill housing to provide a more uniform negative pressure within the housing. The improved airflow hammermill assembly allows increased throughput and energy savings.

Abstract: Device for crushing foodstuffs. The device has a housing for a user hold; a motor installed inside the housing; a drum member has an inlet portion for introducing foodstuffs therein and an extended portion; an internal cylindrical member being formed with a plurality of screw knife-edges and being formed with a shoulder along a front portion thereof for blocking a sludge penetration; a screw member being formed with a transferring thread portion including cut portions for pre-crushing, and a crushing thread portion including jaws for increasing a frictional force; and a cap assembled to the drum member for fixing the internal cylindrical member. The internal cylindrical member and the screw member are surface treated for anti-fermentation. The foodstuffs are easily moved and crushed, resulting in a reliance of the defect-free structure, and the fermentation of the remaining sludge is restrained.

Abstract: Size reduction machines including a screen holder that positions and secures a screen associated with the size reduction machine in place and also including an adjustable impeller for setting and changing a desired known gap between the size reduction machine impeller and frusto-conical screen.

Abstract: Size reduction machines including a screen holder that positions and secures a screen associated with the size reduction machine in place and also including an adjustable impeller for setting and changing a desired known gap between the size reduction machine impeller and frusto-conical screen.

Abstract: An apparatus for disintegrating or beating stalk-, stem- and/or sheet-type regenerative raw material that includes a stator and a rotor is provided. The stator is configured as a sieve drum on whose inner wall radially inwardly-directed, teeth-like projections are provided as disintegration tools. The rotor has a rotor hub and a plurality of radially outwardly-directed arms mounted on the rotor hub, a plurality of axially-directed support bars mounted to the ends of the arms, and a plurality of radially outwardly-directed disintegration tools mounted on the support bars.

Abstract: A concrete reclaimer having a single meshed cylinder for separating concrete into its individual components. The reclaimer includes a hopper with a feed screw for feeding concrete aggregate into the reclaimer at a constant rate, a water spraying system for washing the concrete as it is being separated and flushing separated sand/cement components, heated inclined dewatering screws for separating the sand/cement slurry into its components, and settling ponds for removing cement from the water. The cylinder is made from coarse mesh which allows sand and cement to pass through, but not gravel, which is deposited onto an inclined conveyor adjacent the outlet the cylinder.

Abstract: An apparatus for breaking and separating particles preferably having a mathematical average length to diameter ratio of 1.0 to 4.0, and compositions comprising such particles. The apparatus comprises a cylindrical screen (1) and a hub (7). Upon relative rotation of the screen (1) and the hub (7), reject particles are flung radially outwardly and expelled through openings (4) in the screen (1).

Abstract: A system for handling erose materials including a tank for holding a liquid, and a tumbler mounted in the tank with at least an upper portion extending above the liquid level. The tumbler has a perforated or screen wall to allow materials of a selected size to pass through and fall toward the bottom of the tank. As the remaining materials pass along the tumbler, some will be broken down to the desired screen size by the tumbling action, and these too will pass through the tumbler wall and fall toward the tank bottom. The unselected materials will continue to be treated by tumbling until they pass out of the tumbler. A first conveyor mounted in the tank collects and conveys screened materials out of the tank. A second conveyor mounted in the tank collects and conveys unscreened materials that pass through the output end of the tumbler out of the tank.

Abstract: A material processor having an enclosure with an ingress to receive material into the enclosure, and a discharge to remove material from the enclosure. A spindle is located in the enclosure, has a longitudinal spindle axis, and is rotatable about the spindle axis. A drive is operatively connected with the spindle to rotate the spindle about the spindle axis. A centrifugal sieve is located in the enclosure and coupled with the spindle. The ingress feeds material into the sieve. A conveyor is connected with the discharge to transfer material from the enclosure. The conveyor further has a generally cylindrical tube with a tube diameter, two opposing ends, and a tube axis extending through the ends. A helical blade extends along the tube axis between the two ends and is rotated about the tube axis. More particularly, the helical blade may have a series of blade tips that are spaced along the tube axis.

Abstract: In a method and an apparatus for manufacturing chips for a thixomolding-process injection molding machine, primary crushed pieces obtained by fragmenting and crushing metal alloy wastes are cut and fragmented by a chip manufacturing apparatus having fixed blades, rotating blades, and a screen so as to obtain chips, with the result that the surfaces are polished, and a powder is eliminated by forced exhaust air, thereby making it possible to manufacture the chips while preventing ignition and explosion.

Abstract: Screening apparatus is disclosed for separating fiber suspensions including a housing having an inlet for the fiber suspension, a stationary tubular screen having an inlet end adjacent to the housing inlet and an outlet end, and dividing the interior of the housing into a central chamber for receiving the fiber suspension from the inlet, and an outer accept chamber for receiving an accept fraction of the fiber suspension, a rotor journalled on the housing for rotation within the central chamber coaxially with the stationary tubular screen, a reject passage for receiving a reject portion of the fiber suspension at the outlet end of the stationary tubular screen, and an annular reject passage which has a radial width and a cross-sectional area at the outlet end of the stationary tubular screen for discharging the reject portion of the fiber suspension from the central chamber to the reject passage, the annular reject passage including an annular flange attached to the inner wall of the passage, resilient tubing

Abstract: The invention relates to a device for dewatering and defibrating ligno-cellulose material using a screw. It is primarily characterized by a defibrating element (9) directly adjoining the body (2') of a first screw.

Abstract: A dehusking apparatus is provided having a fixed cage like housing and a conveyor within the housing for transporting produce from an inlet to an outlet. The conveyor has helical flights with an intermediate portion being covered by a flexible covering between which and the inside of the cage the produce may travel to be dehusked as the produce is conveyed through the apparatus.

Abstract: An apparatus for screening foreign matter from dry recycled paper includes a feed device with an outlet for discharging the recycled paper. A frustroconical shaped drum has an open wide end positioned adjacent to the discharge outlet for receiving the recycled paper and an open narrow end for discharging the recycled paper. The drum is rotatable during use about an axis of rotation and has a shell with a plurality of foils attached to an inside surface thereof for moving the recycled paper through the drum from the wide end to the narrow end. The shell has a plurality of holes therein which are sized to allow the foreign matter to fall therethrough via gravitational force and to prevent substantially all of the recycled paper from falling therethrough.

Abstract: A material processor having an enclosure with an ingress to receive material into the enclosure, and a discharge to remove homogenous material from the enclosure. A spindle is located in the enclosure, has a longitudinal spindle axis, and is rotatable about the spindle axis. A drive is operatively connected with the spindle to rotate the spindle about the spindle axis. A centrifugal sieve is located in the enclosure and coupled with the spindle. The ingress feeds material into the sieve. A conveyor is connected with the discharge to transfer mixed material from the enclosure. The conveyor further has a generally cylindrical tube with a tube diameter, two opposing ends, and a tube axis extending through the ends. A helical blade extends along the tube axis between the two ends and is rotated about the tube axis. More particularly, the helical blade may have a series of blade tips that are spaced along the tube axis.

Abstract: A concrete reclaimer having a pair of concentric mesh cylinders for separating wet concrete into its original components. The invention includes a hopper and feed screw for feeding wet concrete into the inner cylinder at a constant rate. The concrete is washed by a water spray as it passes through the cylinders. The inner cylinder is made from coarse mesh which allows sand and cement, but not gravel, to pass through. Gravel is deposited from the outlet end of the inner cylinder. The outer cylinder is made from fine mesh, allowing cement, but not sand, to pass through. Sand is deposited into the bottom of at least one dewatering screw, which allows water to drain as it elevates the sand. The dewatering screw is in thermal contact with a heated liquid tank to prevent the water from freezing. The cement is dropped through the outer cylinder into a series of settling ponds, where it is allowed to settle out of the water.

Abstract: The present invention relates to improvements in screen and blade assemblies for rotary mills as well as to the design of a rotary mill to promote air flow through the mill. A rotary mill incorporating these improvements has increased capacity and the ability to mill products such as rubber, coffee, meats, chemicals and herbs without detrimental effects on the quality of the milled product.

Abstract: A method for recycling a heat exchanger includes spreading the outer periphery of a metal pipe of a heat exchanger in a predetermined direction, and placing the heat exchanger in the rotary space of a crushing roll which rotates around the axis thereof while slanting at a predetermined angle in order to separate the heat exchanger to the metal pipe and radiating metal fins. The crushing apparatus is provided with a crushing assembly which incorporates a processing space extending at a downward slant at a predetermined angle, an inlet, and a crushing roll applied to the heat exchanger which is rotated about the axis thereof in the processing space and moving down the same.

Abstract: A cleaning system for non-ferrous metals for the removal of ash residue and dirt from metals derived from a municipal waste combustor includes an infeed chute for receiving the dirty metals and water from a clean water source. The water and metals are combined in a rotating tumbler for removal of the ash and dirt which is directed to a holding tank. The clean metal is engaged by a rotating upwardly angled drum that includes an internal helix. The metals are moved by the helix to an outlet and pass through a second spray of downwardly directed clean water for further cleaning of the metal. Motor-driven idlers and associated bearings provide for rotation and positioning of the apparatus. A water pump has an inlet from the holding tank and is used to maintain proper level control. An agitation pump prevents the collected ash and debris from settling in the tank.

Abstract: The height positioning of the rotor (4) and thus the play between the wings (3) of the rotor and the sieve (5) of the machine are adjustable by means of an adjusting system (20-26), even during operation of the machine. The drive of the rotor (4) by a belt (19) allows to omit gears as well as an oil bath for the drive. The risk of a contamination of the granulated material by residues is thus obviated. The sieve (5) is supported on a retaining ring (6) which allows to adjust the height of the sieve in such a manner that the internal surface of the sieve is always at the same position independently of the thickness of the sieve. It is thus possible to adjust the play between the sieve and the rotor with precision.

Abstract: A media basket mill has stirring rods each having a length extending radially into a media bed over a major portion of the radius of the media bed, and static rods juxtaposed with counterpart stirring rods for interacting with the counterpart stirring rods to attain combined attrition and rolling shear within the media bed, the static rods extending radially inwardly from the side wall of the basket along a major portion of the radial length of the counterpart stirring rods, so as to tend to stabilize the media bed in radial directions while increasing the combined attrition and rolling shear attained between the static rods and the counterpart stirring rods, the static rods being affixed either directly to the side wall or to an insert selectively seated within the basket.

Abstract: The present invention relates to a rotary lump crusher/reclaiming drum for reclaiming lump materials such as aggregates, chemically-bonded sand lumps, dross, ferrous and non-ferrous scrap and slag. The rotary drum has an outer cylinder concentric with an inner cylinder both of which rotate simultaneously, the latter containing treatment compartments to reduce the lumps to smaller pieces which are in turn reduced to reclassifiable particulate matter in preparation for resuage.

Abstract: A crushing apparatus for processing of materials in bulk includes a cylindrical separator disposed rotatably in a crushing vessel almost coaxially therewith, wherein the separator partition on interior space of the vessel into an inner and an outer chamber one inside the other about the axis of the vessel. The apparatus also includes a cylindrical agitation unit disposed rotatably in the inner chamber and almost coaxial with the vessel. The separator comprises inner and outer annular rings and a plurality of steel studs in a mutually adjacent arrangement and extending between the inner and outer rings space, thereby defining a plurality of slits or openings therebetween for intercommunication of the inner and outer chambers. The agitation unit has a series of flutes and crowns in alternating orders on the peripheral wall thereof, and each of the flutes has a slit or through-bore intercommunicating the interior and the exterior of the unit.

Abstract: Apparatus for dispersing solid particles in a liquid vehicle utilizing a rotor separator mounted on an agitating shaft for rotation therewith, the rotor separator including one or more filter assemblies each of which comprises a plurality of axially spaced ring discs concentrically disposed about the agitator shaft and disposed between two or more agitator discs, the ring discs being spaced apart a predetermined distance to function as a filter to separate dispersing media from the product being processed.

Abstract: A revolving trommel situated adjacent to a shredder has an annular screen which intercepts oversized or elongated fragments in the outflow from the shredder for return to the shredder. A first fragment guide directs the shredder outflow into the trommel and vanes in the trommel lift the oversized fragments to another fragment guide which extends out of the trommel to the shredder intake. In the preferred form, the trommel rests upon and is turned by a motor driven flexible continuous belt which carries fragments that pass through the screen upward to an elevated discharge chute. The apparatus is particularly useful for fragmentizing sterilized medical wastes.

Abstract: A double screen (42) including a cylindrical screen (18) and a conical screen (23) is attached to an upper casing (3) into which a revolution shaft (11) is inserted and is provided with a supply opening (2). A rotary blade 12 is arranged within an annular space (15) having a nearly V-shaped section between the cylindrical screen (18) and the conical screen (23) so as to rotate keeping a desired gap relative to the respective screen surfaces. Since the annular space (15) having the nearly V-shaped section is spaced apart from the revolution shaft (11), the rotary blade (12) rotates at a high circumferential speed even in the bottom portion of the annular space (15).

Abstract: In an abrasive type vertical grain milling machine, there are mounted, on a main shaft extending generally vertically and disposed rotatably in an upright bran-removing cylinder, a screw roll for feeding grain, a plurality of abrasive milling rolls disposed below the screw roll in spaced relation to each other along the main shaft for abrading the grain, and a rotary roll disposed below the plurality of abrasive milling rolls for sending out the grain having been abraded to a grain discharge portion in such a manner that the plurality of abrasive milling rolls and the rotary roll are located within the bran-removing cylinder, a gap defined between the abrasive milling rolls adjacent to each other forming a jet-air slot, the bran-removing cylinder being communicated with a grain supply portion at an upper end thereof and with the grain discharge portion at a lower end thereof. A lower part of the bran-removing cylinder is extended downward so as to face horizontally to the rotary roll.