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 (92, 94, 96, 98) and orifice plates (128, 130, 134, 136). The housing includes a feed chute (78) 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. Rotors extend along a rotatable shaft in the housing, each rotor including a polygonal shaped plate and radially extending vanes.
Abstract:
Old tires are cut into strips (49), cryogenically cooled in liquid nitrogen (60) to make the rubber brittle, and the frozen strips fed through a pair of pinch rollers (30A). One of the rollers has a grooved and knurled surface. The rollers are pushed together by hydraulic rams; the pinch force is large enough to shatter the surface of the rubber, but small enough to leave the bulk of the strip intact, and the pinch force remains the same even if the thickness of the strip varies. The strip passes progressively through successive pairs of rollers, each time the surface of the strip is shattered and the fragments fall clear. With this treatment, the steel wires and textile cords in the tire separate or delaminate very easily, and without being crushed or damaged. All the components of the material composite are recoved and separated for recycling. The rubber crumb thus separated is treated with a suitable chemical treatment for breaking down the molecular cross-links, mixed with plastic material and then repolymerised.
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 chopping-grinding mill for used objects and other waste materials includes a base, on which a disc-shaped vertical-axis rotor (2) is rotatably mounted, the rotor (2) having a plurality of cutting blades (5, 6) fixed to its upper surface. A disc-shaped coaxial stator (3) is associated with the rotor (2) and carries a plurality of cutting blades (II, 12) fixed to its lower surface. The stator (3) is fixed at an adjustable distance above the rotor (2), which together define a grinding chamber. Primary cutting blades (5, II) extend from the centre to the periphery of the rotor (2) and stator (3) and secondary cutting blades (6, 12) extend only in correspondence of a peripheral crown of the rotor (2) and of the stator (3), while a feeding window (10) of the material to be ground is provided in the stator (3), in the area inside to the peripheral crown.
Abstract:
The present invention is Micro-erosion Recovery System for separating recyclable tire materials (rubber, steel and fiber) and complying with quality standards governing the use of recovered tire materials. It is also a highly efficient apparatus and system for producing large amounts of high quality crumb rubber and steel. The system is controlled by selecting a micro erosion water jet nozzle with a specific cross-sectional area of the inlet and continually taking measurements of the inlet pressure until ideal mesh size of crumb rubber is met. Using the inlet pressure and cross-sectional area of the inlet, the remaining variables are able to be calculated by using an equation known in the art.
Abstract:
A process for producing a rubber powder from a vulcanized rubber material by the steps of: a) feeding a grinding device with the vulcanized rubber material; b) contacting the vulcanized rubber material with at least one liquid coolant; c) introducing at least one grinding aid additive into the grinding device; d) operating the grinding device so as to grind the vulcanized rubber material to form a rubber powder, and e) discharging the rubber powder from the extruder.
Abstract:
A system for preparing recyclable vehicular material may consist of a transportable enclosure including a storage space, at least one opening, and at least a portion of an intake loader, a tire shredder, a fragment conveyor, and a storage floor. The intake loader may receive at least one tire and transport the tire from a loading point to a shredder intake. The tire shredder may receive the tire at the shredder intake and convert the tire into several tire fragments. The fragment conveyor may receive the tire fragments and transport the tire fragments to the storage space. The storage floor may be oriented substantially planar within the storage space and include several moveable sections configured to convey the tire fragments from a first end of the storage space to a second end of the storage space, where the second end of the storage space is located proximate to the opening.
Abstract:
A system for preparing recyclable vehicular material may consist of a transportable enclosure including a storage space, at least one opening, and at least a portion of an intake loader, a tire shredder, a fragment conveyor, and a storage floor. The intake loader may receive at least one tire and transport the tire from a loading point to a shredder intake. The tire shredder may receive the tire at the shredder intake and convert the tire into several tire fragments. The fragment conveyor may receive the tire fragments and transport the tire fragments to the storage space. The storage floor may be oriented substantially planar within the storage space and include several moveable sections configured to convey the tire fragments from a first end of the storage space to a second end of the storage space, where the second end of the storage space is located proximate to the opening.
Abstract:
Used tires are chopped up in a punch press which progressively punches out areas of each tire lying flat in the press. The tire fragments are conveyed from the press to a collection container. An elevator mechanism may receive four tires stacked vertically, each used tire therein successively fed into the press by a feed mechanism receiving each tire from the elevator mechanism. An on-site enclosure houses all of the components and a container of collected fragments which is accessed for removal through a door in the enclosure.
Abstract:
This is a method for working and processing different materials, mainly elastomers, in different manufacturing processes. Moving cutting tools act upon the material to create ultrasonic-frequency oscillations of the material in a working zone. The power of the drive units is set at no less than 100–300 kW. The revolution speed of the tool is set in the range of 3,000–12,000 rev/min. The quantity of cutting edges for the tool is selected according to the relation ω×n is less than 800, where ω is equal to the angular velocity of the tool and n is equal to the number of cutting edges of tool. The attach angles of the tool are set in the range of 85–95 degrees. Separate particles of material embedded to the cutting portion of the tool are removed using a fluid flow containing gas and/or liquid. The effect is an enhanced efficiency of method, increased disposition degree and uniformity of ready product structures.