1. Technical Field
this invention relates to recycling process machines used to process synthetic resin plastic waste material into reusable product.
2. Description of Prior Art
Prior art apparatus and methods have been developed to process waste plastic materials into usable compositional sizes and texture by shredding and grinding using machine means and multiple reduction steps. Such prior art apparatus typically have material infeed to movable cutting blades having cutting edges engageable on a stationary cutting blade engaging and shredding continuous infeed waste materials. Examples can be seen in U.S. Pat. Nos. 3,545,686, 4,004,738, 5,285,973, U.S. Publication 2012/0238650, International Patent WO95/34418.
U.S. Pat. No. 3,545,686 is directed to a shredder for shredding sheets of polymeric material by having a pair of cutting blades on a rotary arbor and an indexed fixed blade.
U.S. Pat. No. 4,004,738 claims a method and apparatus for shredding a web of plastic film having impellor blades movable on a rotating disk and aligned fixed blades to achieve shredding there between.
U.S. Pat. No. 5,285,973 illustrates a close tolerance shredding device having multiple rotating shafts with multiple disk shaped blades and spades placed there between.
U.S. Publication 2012/0238650 is directed to a plant and method for recycling PET type plastics having a first processing line to produce pellets and a second processing line for recycling plastic flakes.
International PCT Patent WO95/34418 discloses a plastic recycler for a mix of discarded materials by feeding shredded plastic into a rotating chopping blade that shreds material until heat is generated forming a viscous mass.
A plastic recycling process device for recycling a mixture of waste plastic materials into reusable uniform size product in a single stage including shredding, grinding and pulverization. The utilization of a unique multi-stage blade assembly with interchangeable blade segments on rotating and fixed blade support provides for a single pass combined stage processing product pulverization end use of reusable material eliminating multiple product processing and transfer during recycling with improved outflow product transfer speed and efficiency.
Referring to
A material processing infeed and outflow blade housing 18 is secured to the drive motor 17 via a riser 19. The blade housing 18 has a contoured upstanding sidewall 20 extending from a corresponding contoured support base 21.
A primary material processing blade disk 22 assembly is mounted to an output drive shaft D of the motor 17 for high speed rotation thereon as seen in
The mounting flywheel 24 has a central opening at 24B with an upstanding perimeter edge flange 24C. Accordingly, the multiple arcuate blade sections 23 are positioned for use on the flywheel 24 abutting the upstanding perimeter edge flange 24C thereby forming an annular continuous blade band thereabout.
Each of the hereinbefore described form registration slots S have effacing tapered edges for receiving a locking wedge bar 24 therein as best seen in
The wedge bars 65 each have a number of aligned apertures A for fixation fasteners there through and have corresponding interface interference surfaces along respective longitudinal edges 65A and 65B. The wedging bars 65 are driven into the defined slots S achieving a friction fit there between wedgeably retaining the so engaged multiple blade sections 23 radially against one another retained by the flywheel's perimeter edge flange 24A as illustrated. An annular apertured retainment plate 66 is fitted in this example onto the center of the flywheel 24 thereby abutting against the respective inner edge surfaces 61 of the inserts 23 which along with fixation fasteners F in the wedge bars 65 complete the annular blade assembly.
Multiple opposing primary shredding and grinding blades 27 are removably secured upstanding from the mounting disk 24 extending in spaced relation from a center axis C to the edge surface 61 of the respective annular blade sections 23 in abutment thereto. The primary blades 27 are in angular offset linear alignment to provide initial infeed product engagement as will be described.
The primary shredding and grinding blades 27 each have a plurality of replaceable blade sets 28, best seen in
Referring now to
The fixed bed blade engagement assembly 30 has a corresponding multiple arcuate segmented fixed replaceable annular surface blade 33 extending inwardly from an upstanding perimeter support edge 34 on a mounting support disk 35 which in turn is secured in spaced relation to the hereinbefore described closure lid 31, as seen in
The segmented replaceable annular blade surfaces 33 have a plurality of radially aligned parallel upstanding knife edges 33A milled therein that correspond to the hereinbefore described rotating annular blade milled surfaces 25 so as to systematically and progressively engage shredded and ground recyclable plastic product for pulverization as required for product consistency and desired final product use level.
The segmented annular surface blade 33 is secured to the fixed mounting disk 34 by an identical wedging assembly 36 of that of the rotating arcuate blade mounting sections 23, hereinbefore described.
In this example, the fixed bed blade assembly 30 has single fixed shredding bed blade 37 which extend radially from an inner edge of the segmented annular blade surface 33 as best seen in
Referring now to
The cooling also enables better material transfer as the now processed material in loose form will accumulate in the defined outflow housing areas 18A and 18B directly under the vacuum outflow opening lid mounts 32A and 32B so as to be drawn outwardly by a dual vacuum tube assembly 43, best seen in
Selected waste material for reprocessing defined as raw product RP for product inflow is delivered to the processing housing 18 from a supply hopper 44 supported on the vertical and horizontal support rails 12 and 13 of the support frame 11. The supply hopper 44 provides for metered and control release of raw product RP through a rotary control feed valving 45 delivering the raw product RP to a pair of vibrating conveyor trays 46 and 47 which move and separate raw product RP for delivery to an upstanding central infeed housing 48 extending from the closure lid infeed opening 31A. The raw product RP is transferred into the housing 18 rotating and fixed bed blade engagement assemblies for blade engagement and reduction as hereinbefore described.
As noted, once the raw product RP has been processed by the multiple stage blade assembly expelled by centrifugal force collecting in the cut flow areas 18A and 18B, it is drawn out of the housing 18 by a dual vacuum transfer assembly 48 having a first and second vacuum transfer nozzle conduits 49A and 49B which combine upstream into a single vacuum transfer tube 50.
A force vacuum flow of material entrained airstream AS is achieved by a vacuum blower assembly 51 which draws the material up into a cyclonic particle separator 52 as seen graphically in broken lines in
The finished and classified product FP is transferred out of the classifier 53 through, in this example, a magnetic metal separator 55 which achieves a final separation of any possible entrained ferrous metallic material assuring that only usable synthetic resin thermoplastic material now fully processed is passed on for recycling use.
Referring now to
It will be seen therefore that with the adaptability of the present recycling processing apparatus 10 of the invention, that a single material processing installation can replace multiple processing staged equipment overall installation and associated inner transport cost to independent processors heretofore required.
It will thus be seen that a new and useful adaptable plastic recycling processing apparatus 10 has been illustrated and described and it will be apparent to those skilled in the art that various changes and modification may be made therein without departing from the spirit of the invention, therefore:
Number | Name | Date | Kind |
---|---|---|---|
3545686 | Brown | Dec 1970 | A |
3899965 | Koch | Aug 1975 | A |
4004738 | Hawkins | Jan 1977 | A |
4395944 | Siepermann | Aug 1983 | A |
5285973 | Goforth et al. | Feb 1994 | A |
7451945 | Wollenhaupt | Nov 2008 | B2 |
7841552 | Frangenberg | Nov 2010 | B2 |
8297183 | Horster | Oct 2012 | B2 |
8795563 | Splinter | Aug 2014 | B2 |
9364834 | Wollenhaupt | Jun 2016 | B2 |
20120238650 | Reese et al. | Sep 2012 | A1 |
Number | Date | Country |
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WO9534418 | Dec 1995 | WO |
Number | Date | Country | |
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20170304839 A1 | Oct 2017 | US |