Abstract:
Waste such as combustible trash and prime garbage is mixed with rubber tires and shredded together to produce a compacted and combustible output product which can be used as a fuel or incinerated for further compacting.The apparatus involves interengaging rotary feeder-cutter wheels mounted on counterrotating shafts to pull materials through a feed path while shredding with the aid of shredder blades interspersed between the wheels. Feeding, mixing and conveying techniques through one or more shredder stages provide for attainment of high speed feed rates and handling of some degree solid debris such as steel belts in tires.
Abstract:
Scrap tires containing magnetic components and non-magnetic rubber and cord components are cooled in a cryogenic freezer to the embrittlement temperature, comminuted in a comminution device and passed through a series of screening and density classification operations followed by magnetic material separation and further cryogenic size reduction to produce a product rubber crumb having a particle size of about 1/20 inch or less.
Abstract:
Automobile tires and analogous articles of rubber or synthetic plastic material are frozen to make them brittle, and thereupon are fragmented in order to separate their rubber or synthetic plastic material from embedded reinforcements of textile or analogous fabrics. The fragmenting is carried out by dropping the articles into an impact mill in which a rotor equipped with striking elements turns about a horizontal axis, so that the articles are hit by the striking elements of the rotor and flung in circumferential direction of movement of the rotor against impact plates from which they drop back onto the rotor, whereby the articles are fragmented by the repeated hits and impacting. An apparatus for carrying out the method is also disclosed.
Abstract:
Disclosed is a mobile shredding machine for shredding vehicle tires. The machine has a rotating flywheel with a pair of projecting radially extending blades on one face thereof. The flywheel is mounted on a truck chassis and driven by an electric motor powered by a motor generator. The electric motor has controls so that the speed of rotation of the flywheel can be regulated. The flywheel is mounted in a frame on the truck chassis which supports a fixed blade in shearing relationship with said flywheel blades. Tires are fed to the flywheel by a feed conveyor which flattens the tire carcasses and feeds them to the blades in this condition. The flywheel is surrounded by a housing which fits with close tolerances the periphery of the wheel and the rotating blades on the face surface, so that shreds are carried in rotation with the flywheel after they are cut onto a shred discharge conveyor at the side of the truck chassis which carries them to a shred pile or into a hauling truck.
Abstract:
A tire grinding device comprising conveyor means for feeding a row of tires along a path of travel with converging feed roll means disposed adjacent one end of the conveyor means for squeezing a tire therebetween in a relatively flat configuration, and grinding means disposed adjacent one side of said feed roll means for pulverizing and grinding the tire as it is continuously fed between said feed roll means. The apparatus is provided with support means adjacent the lower portion of the feed roll means to support the edge of the tire as it is being pulverized by the grinding means.
Abstract:
A tire pulverizer adapted to receive and cut automobile, truck or other vehicle tires into small particles, wherein the pulverizer has a plurality of rows of interfitting abrading rotating blades disposed in substantially a V-shape and through which the tires are fed as they are cut into the small particles by the blades.
Abstract:
A secondary shredder can include a rotor assembly that employs a modular rotor design. Each rotor of the rotor assembly can include a number of blades that are symmetrical around a horizontal and a vertical axis. Each rotor can include a number of radial extensions forming gaps into which the blades insert. The blades can be secured within the gaps by wedges that apply an inward force against the blades when the wedges are secured into the gaps. The radial extensions and blades can include keyways into which keys insert to prevent the blades from escaping the gaps. The secondary shredder may also include a stationary knife assembly that includes multiple stationary knives that are positioned on the same side of the rotor assembly.
Abstract:
A machine or system and related method for breaking and reducing the bulk size of one or more objects and comprising: a frame, a reception chamber and a size reduction mechanism. The size reduction mechanism includes a drum rotatably coupled to the frame and configured to oscillate relative to the frame between a first position and a second position about a longitudinal rotational axis; a cutting member coupled to the drum and extending therefrom, the cutting member being configured to penetrate through one or more of the objects in the reception chamber during operation as the drum rotates from the first position to the second position during each oscillation cycle; and a breaking screen comprising a series of spaced breaking members configured to cause further breakdown of the one or more pieces of the one or more objects during operation as the drum rotates toward the second position during each oscillation cycle and forces the one or more pieces against the breaking members. An optional chute may be coupled to the outlet of the machine or system for further compacting and disposing of the bulk material output by the machine.
Abstract:
A cooling arrangement and system are provided for use in a process of producing brittle particles, and comprising: a first chamber comprising an air ingress for receiving air conveyed to the first chamber, and an air egress for introducing air leaving the first chamber to a second chamber; a second chamber comprising an air ingress for receiving air egressing the first chamber, and an air egress for discharging air leaving the second chamber; a solid particles feed ingress means; an enclosure formed by a space confined between the walls of the first and second chambers, through which solid particles fed via the solid particles feed ingress means fall downwardly towards the bottom part of the cooling arrangement; and a solid particles egress means. According to an embodiment, the cooling arrangement further comprises a shaft that is operative to enable movement of the first chamber.
Abstract:
The apparatus and method produces fine mesh crumb rubber and provides for independently driving two parallel rolls, with one roll turning at tip speeds far above conventional cracker mills. Turning the roll at a rate (rpms) that results in “hyper” outer roll surface speeds between 1000 ft/min and 1300 ft/min., which is four and a half times the normal maximum speed of conventional mills yields several unexpected and beneficial results. The previously expected effects of operating at surface speeds about 400 ft/min are reduced or eliminated.