Patent ID: 7213778
Filing Date: 2007-05-08
Classification: B02C

Abstract:
1. A tire size reduction/wire separation system for the safe and efficient size reduction and wire separation of scrap tire material, cable and wire which need to be separated for means of recycling and recovery, the system comprising, in combination: a drive shaft in a generally cylindrical configuration with a central section of an enlarged diameter and with end sections of a reduced diameter and with intermediate sections of an intermediate diameter located between the central section and end sections and with a pair of spaced bearings supporting the shaft at the intermediate sections for rotating the shaft about a horizontal axis of rotation; a plurality of generally cylindrical rotors mounted on the central section of the drive shaft for rotation therewith, the rotors having a common axis of rotation coextensive with the axis of rotation of the drive shaft, each rotor having a periphery with eight equally spaced axial slots, each axial slot having a shallow region and a deep region, a rotor mounted knife with teeth removably secured within each shallow region, each said slot having a primary wedge and secondary wedge, each primary wedge and deep region having threaded apertures with bolts for securement purposes, a replaceable wear plate between each primary wedge and the rotor mounted knife of the next adjacent slot, each wear plate and rotor there adjacent having threaded apertures with bolts for securement purposes, the knives of each rotor being offset from the knives of each other rotor to form a helix tending to move the material toward the axial center of the rotors during rotation of the rotors; an independent housing having a base plate supporting the bearings with the rotors within the independent housing and with the end sections of the drive shaft extending laterally from the independent housing; said independent housing also having a central region with stationary knives, each stationary knife having horizontally aligned fixed teeth, the stationary knives being matingly oriented with respect to the rotor mounted knives; said independent housing also having an upper region above the mid-plane of the rotors with a chamber for receiving material to be shredded by the rotor mounted knives and the stationary knives; said independent housing also having a lower region beneath the mid-plane of the rotors, the lower region including a semi-cylindrical screen concentric with the rotors for the passage there through of material passing between the rotatable and stationary knives; and said independent housing also having lateral regions adjacent to the axial ends of the rotors, each lateral region including an annular wear ring with an exterior diameter greater than the diameter of the rotors and vertically secured to the axial ends of the rotors for rotating therewith, each lateral region also including a wear liner vertically secured with respect to the chamber and positioned adjacent to the axial ends of the rotors and fixed with respect thereto, each wear liner having a circular opening with a diameter greater than the exterior diameter of the wear rings and concentrically receiving said annular wear rings there within and forming a gap there between for the passage of small particles, each lateral region also including a supplemental plate vertically secured with respect to the chamber and positioned laterally exterior of the wear liners and fixed with respect thereto, the supplemental plate and wear ring at each end of the rotors defining a passageway for the movement of small material from the upper region to the lower region, the gap and the passageway adapted to be kept clear by the use of replaceable wipers.