Particle Reduction Device
AssigneeFibrecycle Pty Ltd
InventorDonald Barry Webb
Life of this patent
Estimating the term…
Abstract
A particle reduction device comprising: a housing containing an inlet for receiving material into a flow chamber, at least two adjacently spaced particle reduction stages through which material flows from one stage to the other for reducing the particle size of the material, and an outlet for outputting processed material with reduced particle size; each particle reduction stage having an impact member that rotates about a central shaft for impacting material into smaller particles; wherein at least one of the stages has a screen located downstream from the impact member, the screen having perforations through which particles of a sufficiently small size can pass.
Claims17
A particle reduction device comprising:
- a housing containing an inlet for receiving material into a flow chamber, at least two adjacently spaced particle reduction stages through which material flows from one stage to the other for reducing the particle size of the material, and an outlet for outputting processed material with reduced particle size;
- each particle reduction stage having an impact member that rotates about a central shaft for impacting material into smaller particles;
- wherein at least one of the stages has a screen located downstream from the impact member, the screen having perforations through which particles of a sufficiently small size can pass.
The particle reduction device claimed in any one of the preceding claims, wherein at the first stage the impact member is located above a shelf containing one large aperture, the impact member rotating close to the aperture's circumference on the shelf.
The particle reduction device claimed in any one of the preceding claims, wherein at the stages having a perforated screen the impact member comprises elongated beaters fixed to a beater plate that rotates around the central shaft.
The particle reduction device claimed in any one of the preceding claims, wherein the housing is an upright, multi-faceted enclosure such that the interior walls defining the flow chamber are multifaceted to promote circulation of particles.
A method of reducing the particle size of material including:
- introducing material into a particle reduction device comprising at least two adjacently spaced stages for reducing particle size;
- impacting material with an impact member at each stage as the material flows through the device to reduce the material particle size at each stage, and whereby at least one of the stages impacts material until it is of a sufficiently small size to pass through a perforated screen located downstream of the impact member;
- and
- conveying the material with reduced particle size out of the device.
Dependencies are inferred from the claim text.