Abstract:
A roller-type reducing apparatus comprising reducing rollers mounted within a housing for rotation in opposite directions. The reducing rollers comprise a plurality of reducing discs having different diameters and placed in a side-by-side relationship. There are provided reducing discs with fine serrations and reducing discs with coarse serrations, with comminuting discs with fine serrations having a diameter smaller than that of reducing discs with coarse serrations.
Abstract:
A rubber grinding machine and method is provided for ambient temperature grinding of rubber material to form finely ground rubber particles. The rubber grinding machine includes a feed tube, a grinding module, a conveyor, a screening module and a vacuum system. Rubber material is placed in the feed tube which advances the rubber material into the grinding module using a plunger or auger. The grinding module includes a grinding wheel which grinds the rubber material into rubber particles. The grinding wheel is surrounded by a shroud which includes a water-cooled cooling jacket. The water is circulated through the cooling jacket to cool the shroud and its interior. Rubber particles ground by the grinding wheel fall through the bottom of the shroud onto a conveyor which deposits the rubber particles onto the screen module. The screen module includes at least one screen for separating the rubber particles by size. Rubber dust produced by the grinding wheel is processed by a vacuum system and may later be screened.
Abstract:
A rubber waste disposal apparatus processing rubber waste such as an old tire efficiently includes a casing, a rubber waste deformation unit provided in the casing to subject rubber waste to deformation, and an ozone-containing gas supply unit supplying ozone-containing gas into the casing. The rubber waste deformation unit includes a pair of cylindrical rollers having a plurality of protrusions projecting outwards, capable of sandwiching rubber waste at the gap therebetween, and a distance setting unit that can set the distance of the gap between the cylindrical rollers.
Abstract:
In rotary tire shredding machinery, cutter assemblies are built onto opposing rotary shafts timed together by meshed teeth of two gears, with spacer groups separating adjacent cutter assemblies, allowing two sets of cutter assemblies to intermesh, with cutter assemblies on one shaft interleaving with cutter assemblies on a parallel shaft in a shearing relationship. Each cutter assembly has a construction featuring a series of cutter sectors, with each sector having a separately demountable knife base, with a removable, radially outward knife top. Alternate spacers between cutter assemblies are segmented, with alignment rods running parallel to the axially rotating drive shafts, passing through both the knife bases of the cutter assemblies, spacers, retaining flanges and fixed registering spacer. The rods are secured at opposite ends and the center holding the cutter assemblies and spacers in place, but when pulled, allowing the cutter and spacer assemblies to be removed from the shaft. The knife tops, which experience the most wear may be easily removed for routine maintenance, since they are held in place by radially endwise bolts, but the knife bases if they are worn or damaged may also be removed and replaced by pulling the alignment rods. Some spacers are formed in halves which are offset from each other and welded for extra strength. Spacers and cutter sectors may be assembled and disassembled in-situ on a drive shaft without removing the drive shaft from its support bearings.
Abstract:
An apparatus pulverizes material composed of wet or dry discrete objects into relatively smaller particles with shock waves created by flowing the material through a housing having alternating rotors and orifice plates. The housing includes a first end having a feed chute for introducing the material into the housing, a second end having an opening for removing the smaller particles, and internal sides meeting in corners, which extend longitudinally between the first and second ends. A rotatable shaft extends substantially along a longitudinal central axis of the housing. Rotors each include a hub coupled to the shaft for rotation therewith, a substantially polygonal-shaped rotor plate centrally fixed to the hub and having apices, and a plurality of vanes each vanes extending approximately radially inward on a side of the rotor plate from an apex. Each orifice plate extends inwardly from the internal sides of the housing to a central aperture which provides an orifice around the shaft. Circumferentially spaced members are located proximate the rotors, wherein the members extend inwardly from the corners of the housing toward the rotors.
Abstract:
A machine (1) is serving the purpose of comminution for example domestic garbage, refrigerators, tires, furniture, carpets, mattresses, stubs, demolition timber and similar materials. The machine has a funnel (2) for accommodating the waste, a cutting table (4) placed at the bottom of the funnel with at least one set of fixed, parallel lower knives (9a,b) which mutually are separated by openings (10a,b) through the table, at least one rotatable axle (5a,b) of a drive unit (7) which axle is placed above the cutting table into a direction, which extends perpendicular to the lower knives, and a number of disc-shaped upper knives (8a,b) fixed to the axle, each of which knives is provided with a number of teeth (13a,b) and partly extends down into each their opening of the table. The lower knives are running into a direction, which intersects the axis (18) of the axle or an area around this. Thereby it is obtained that the teeth of the upper knives will have angle of action of about 90.degree., and the stress of forces, which they exercise, will have no substantial components into the radial direction of the upper knives and along the lower knives. The advantage of this construction is that the machine is able to securely, in a fast way and efficiently carry out a process of comminution by optimum utilizing the supplied energy, and with the given dimensions the machine has furthermore a larger capacity than known hitherto.
Abstract:
Apparatus for compacting and for cutting voluminous objects of strong elasticity, notably pneumatics.The apparatus includes shears; positioned at the extremity of a tunnel of arranging and compacting, the tunnel has a rectangular cross section, narrowing toward the extremity and the four walls of the tunnel being constituted of parallel and juxtaposed rollers. The rollers are disposed transversely. The rollers of the vertical walls and of the horizontal superior wall being put into rotation by a motor apparatus.
Abstract:
A device and method for both liberating rubber from other parts of a tire, and cutting the rubber and other parts to an appropriate size for recycling.
Abstract:
A tire-shearing machine capable of varying the size of tire chunks segmented. A primary shear segments a tire, along a longitudinal axis, into a plurality of longitudinal strips and feeds the strips into a secondary shear. The secondary shear segments, along an axis perpendicular to the longitudinal axis, each of the longitudinal strips into a plurality of chunks. The speed of each of the shears is controlled independently of the other, and on-the-fly, to allow producing tire chunks to a desired size.
Abstract:
A method and apparatus for separating and recovering rubber, fiber, and steel from tires cryogenically cools and grinds tire rubber. The method reduces by 45 to 60 percent the amount of nitrogen required to cool and embrittle the rubber prior to being ground. Only the surface of the rubber is embrittled prior to grinding.