Abstract:
A rotor assembly operable with anvil mechanism for comminuting waste wood and other fragmentable material has a rotating drive shaft with a series of rotors fixed in axially spaced relation thereon. A series of radially projecting hammers mechanisms are situated along the axis of the shaft and powered by the shaft. Fragmenting knives are removably secured to the leading outer portions of the hammer mechanisms. The hammer mechanisms include sidewisely reversible hammer legs having portions received by the rotors sidewisely contiguously.
Abstract:
An industrial shredder is described—designed to shred the most diverse materials, such as plastic, rubber, paper, wood, metals and the like—which comprises two counter-rotating shafts (1), parallel to each other, whereon are keyed disc-shaped blades (2) with one or more teeth (3), intercalated with spacers (4) having about the same thickness as the blades and a diameter smaller than the blades one, so that the spacers (4) of one shaft are blades and a diameter smaller than the blades one, so that the spacers (4) of one shaft are opposed to the blades (2) of the other shaft, said shafts (1) being so spaced that the blades of one shaft intersect with those of the other shaft to force the material poured into an upper cutting chamber (7) to be sheared between said blades. Beneath said blades (2) hollow supports (14) having a circular profile (15) at the top are provided, connected with which fixed blades (17) are disposed, which cooperate with said blades (2) to perform further cutting of the material already sheared between the opposed blades, said supports (14) extending until they almost come into contact with the spacers (4) of the other shaft to perform cleaning thereof.
Abstract:
FIELD: techniques for processing different materials, mainly elastomers, possibly in the different manufacturing processes. SUBSTANCE: method comprises steps of acting upon material by means of moving cutting tools for creating in working zone ultrasonic-frequency oscillations of material; setting power of drive units at working and processing materials no less than 100-300 kW; selecting revolution number of tool in range 3000-12000rev/min; selecting quantity of cutting edges of tool according to relation ωn, is less than 800, where ω is equal to the angular velocity of tool, n is equal to the quantity of cutting edges of tool; setting attach angles of tool in range 85-95 degrees; removing separate particles of material embedded to cutting portion of tool my means of fluid flow containing gas and (or) liquid; feeding fluid flow by excess pressure material is fed to tool or vise versa in mode of reciprocation motion or start-stop motion. EFFECT: enhanced efficiency of method, increased disposition degree and uniformity of ready product structures.
Abstract:
A hand-held device for shredding paper comprising a pair of rotary cutting wheels disposed within a housing between an inlet slot and an outlet slot. A motor is positioned in the handle to drive the cutting wheels through a gear assembly. One wheel serves as a drive wheel, which is coupled directly to the gear assembly, and the other wheel serves as an idler, driven from a spur gear attached to the drive wheel at the end opposite a gear case. Paper sheets are fed into the inlet slot and pulled between the wheels. Wheels are comprised of a stack of alternating discs of a large and small radius, and staggered so as to allow the two wheels to be interleaved while rotating in opposite (clockwise and counterclockwise) directions and maintain clearance. Large discs have a frictional edge to grab and feed the paper into the intersection of the wheels, tearing the paper into strips and forcing the strips into the outlet slot. A battery compartment in the handle contains the batteries for energizing the motor.
Abstract:
Fragmenting devices for shredding paper and breaking compact discs, comprising a compact disc cutting tool set configured at a side of and linked up by means of a connecting gear to a cutting tool set of a conventional paper shredder. The compact disc cutting tool set is constructed to include two juxtapositioned cylindrical rotary cutters, and pressed grains are defined on surfaces of the two rotary cutters. A compact disc is inserted between the two rotary cutters through a compact disc insertion opening defined in a top surface of a top cover, and thereupon the pressed grains on the surface of the cutting tools mash and break up the compact disc.
Abstract:
A rotary drum having a cutter extending outward from the outer diameter of the rotary drum. The rotary drum further includes a sleeve. The cutter is retained in a position relative to the drum by at least one block having a surface that wedges the cutter and/or interconnected member against the sleeve.
Abstract:
A primary reduction apparatus having a frame structure and at least one shaft mounted on the frame. The shaft is reversibly rotatable around an axis of rotation in a first direction of rotation or a second direction of rotation. A drive supplies rotation force to rotate the shaft. Protruding cutters are arranged on the shaft, each cutter having a stem portion which edges define shear edges, a first protruding wedge-shaped tooth arranged on the stem portion and facing the first direction of rotation and a second protruding wedge-shaped tooth facing the second direction of rotation. Cross members connect sides of the frame with cracker jaw plates removably attached to each cross member. The cracker jaw plates have a working surface with multiple pierce points forming a serrated edge to cooperate with the cutters. The cracker jaw plates have a relief on a surface of the cracker jaw plates facing the cutter and are removably attached to the cross members. The cross-members are similarly removably attached to the frame. The frame structure has an enclosure provided with a charging opening for material to be shredded, and a discharging opening for shredded material. The drive has either an internal combustion engine or an electric motor used as prime mover. The prime mover provides pressurized hydraulic fluid to a hydraulic motor, which provides the rotation force to the shaft. A pressure sensing means is connected to the drive to automatically reverse the shaft rotation directions when the pressure sensing means senses an over-pressure situation. The drive has a timer to periodically reverse the shaft rotation direction. A plurality of vertically extendible and contractible legs are attached to the frame and provide support for the shredding apparatus during shredding.
Abstract:
The present invention is related to a mixing machine which basically consists of a hopper, that has a main chamber within its housing, with a rotary member (rotor), where at said rotor ends there are cleaning elements for sweeping the floor and taking up the material, by feeding a secondary chamber, which is located in parallel adjacent to the main chamber, where said secondary chamber has a bottom worm conveying the material from one end of the mixing machine to the other end thereof, until collapsing with a loop found on its front portion and generating a material bubble; an upper worm to remove the material bubble and carrying it up to the middle part of the machine. At the middle part of the machine, the material is forced by a loop system having an upper worm to move towards the rotor area, such that the material is actually moving towards the back portion of the machine, completing a mixing cycle. Said upper worm has from the middle of its axis, a plurality of discs on which peripheral edge of each disc is mounted a series of exchangeable knives placed on a loop arrangement, which are passed through a counterplate, and which shows a series of exchangeable knives placed at the bottom part of the material collector chut, so when the upper worm discs plurality is rotating, it allows both, humid and dry fibers be efficiently crushed and/or ground and besides added to the other several common ingredients a unique and highly qualified mixing is achieved.
Abstract:
A device for compacting loosely packed materials, in particular synthetic materials, comprises a shredder/conveyor rotor body arranged in a casing and drivable with the rotation around an axis of rotation and a consecutively arranged extruder with an extruder screw that is arranged rotatably and coaxially to the shredder/conveyor rotor body. Materials supplied to the shredder/conveyor rotor body are conveyed to the extruder screw, whereby they optionally are shredded. According to the invention, the shredder/conveyor rotor body is configured as a hollow body open at the front side opposite the extruder and has at least one rotary bearing in its interior, which rotary bearing rests on an abutment body projecting from the open front side into the interior of the shredder/conveyor rotor body.
Abstract:
A rotary grinder having a cylindrical drum that includes a cylindrical surface. The cylindrical surface defines two holes. The drum receives opposite ends of a through-member at the two holes such that the opposite ends of the through-member comprise hammers when the cylindrical drum is rotated. A single retaining member is used to secure all of the through-members to the drum.