Disclosed is a mobile shredding and material handling and feed system, preferably for use in the handling and shredding of paper and other office related feedstock. An embodiment of the system on the input side utilizes an input hopper, a first conveyor, a feed aperture, and a second conveyor which moves excess feedstock away from the entry to the shredder feed aperture to avoid jamming the feed aperture. An embodiment of the invention on the output side utilizes a compactor, preferably one or more augers, to compact the shredded material exiting the shredder, and moving said compacted shredded material to the discharge or system output. An embodiment of this material handling and feed system also applies for balers.
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0. 7. A shredded system, comprising:
(a) an input hopper with a hopper inlet and a hopper outlet, the hopper disposed to receive feedstock to be shredded;
(b) a first conveyor with a first conveyor inlet and a first conveyor outlet, the first conveyor inlet disposed to receive feedstock from the hopper outlet;
(c) a shredder feed aperture disposed to receive feedstock from the first conveyor outlet;
(d) a second conveyor with a second conveyor inlet disposed to receive excess feedstock from the first conveyor outlet, the second conveyor having a conveyor surface moving away from the shredder feed aperture, wherein the second conveyor moves excess feedstock away from the shredder feed aperture; and
(e) a shredder disposed to receive feedstock from the feed aperture, the shredder having a shredder inlet and a shredder outlet.
1. A mobile shredding system, comprising:
(a) an input hopper with a hopper inlet and a hopper outlet, the hopper disposed to receive feedstock to be shredded;
(b) a first conveyer conveyor with a first conveyor inlet and a first conveyor outlet, the first conveyor inlet disposed to receive feedstock from the hopper outlet;
(c) a shredder feed aperture disposed to receive feedstock from the first conveyor outlet;
(d) a second conveyor with a second conveyor inlet disposed to receive excess feedstock from the first conveyor outlet, the second conveyor having a conveyor surface moving away from the shredder feed aperture, wherein the second conveyor moves excess feedstock away from the shredder feed aperture; and
(e) a shredder disposed too receive feedstock from the feed aperture, the shredder having a shredder inlet and a shredder outlet.
0. 13. A feedstock feed system, comprising:
(a) an input hopper with a hopper inlet and a hopper outlet, the hopper disposed to receive feedstock;
(b) a first conveyor with a first conveyor inlet and a first conveyor outlet, the first conveyor inlet disposed to receive feedstock from the hopper outlet;
(c) a feed aperture disposed to receive feedstock from the first conveyor outlet; and
(d) a second conveyor with a second conveyor inlet disposed to receive excess feedstock from the first conveyor outlet, the second conveyor having a conveyor surface moving away from the feed aperture, wherein the second conveyor moves excess feedstock away from the feed aperture;
a shredder disposed to receive feedstock from the feed aperture, the shredder having a shredder inlet and a shredder outlet; and
wherein the first conveyor is a belt conveyor.
2. A mobile shredding system as recited in
a shredded material compactor disposed to receive shredded material from the shredder outlet, the shredded material compactor having a compactor outlet;
a reciprocating ram, with a stroke of the reciprocating ram defining a discharge area, the discharge area disposed to receive shredded stock from the shredded material compactor, the discharge area having an outlet.
3. A mobile shredding system as recited in
4. A mobile shredding system as recited in
5. A mobile shredding system as recited in
6. A mobile shredding system as recited in
0. 8. A shredding system as recited in
a shredded material compactor disposed to receive shredded material from the shredder outlet, the shredded material compactor having a compactor outlet;
a reciprocating ram, with a stroke of the reciprocating ram defining a discharge area, the discharge area disposed to receive shredded stock from the shredded material compactor, the discharge area having an outlet.
0. 9. A shredding system as recited in
0. 10. A shredding system as recited in
0. 11. A shredding system as recited in
0. 12. A shredding system as recited in
0. 14. A feedstock feed system as recited in
a shredded material compactor disposed to receive shredded material from a shredder outlet, the shredded material compactor having a compactor outlet;
a reciprocating ram, with a stroke of the reciprocating ram defining a discharge area, the discharge area disposed to receive shredded stock from the shredded material compactor, the discharge area having an outlet.
0. 15. A feedstock feed system as recited in
0. 16. A feedstock feed system as recited in
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This invention pertains to a mobile shredding and material handling system, preferably for use in the handling and shredding of paper and other office related feedstock.
Mobile paper shredders have been used for many years to shred paper and other office related feedstock. One example of such a prior mobile paper shredder is U.S. Pat. No. 5,542,617, issued to David E. Rajewski on Aug. 6, 1996, which is hereby incorporated by this reference into this application as though fully set forth herein.
An important part of any paper shredding operation is the material handling aspects, i.e., how the feedstock is received, controlled and delivered to the shredder, and also how it is discharged and handled after it is shredded. This becomes more important in mobile shredding applications where space and other time limitations affect operations more.
While there are still may mobile shredding units which utilize a hand feed by the operator, there are also automated feed units such as that disclosed in U.S. Pat. No. 5,542,617, wherein an effective lift system is used to provide the feedstock to the input hopper.
If feedstock is fed to the shredder too fast, the shredder tends to jam and breakdown, whereas if it is fed too slow, the shredding process takes an unnecessarily long time. On the output side, if the shredded material exiting the shredder is inefficiently handled while being moved to the storage area, it can result in delays in the operations and possibly clogging of the shredder.
Since there is limited storage area in mobile shredders, the more the shredded material may be compacted while it is being moved to the storage area, the more efficient the mobile operation will be and the higher capacity it will have for a given sized truck or storage area.
It is one object of this invention to provide a more efficient and effective feedstock and shredded material handling system for use in connection with a high speed shredder, from where the feedstock is received in the hopper, to where it stored in the storage compartment of the vehicle.
After exiting the shredder and being placed in the storage area, the shredded material must then be removed from the truck or other storage area and thereafter handled. In many situations, the shredded material is preferably placed in a baler and thereby compacted into bales of resale. The baler feedstock, i.e. the shredded material, has similar demands to the shredder application, i.e. efficient input, compacting and efficient delivery of the output material to the baler compartment.
The feedstock and shredded material handling system provided by this invention (without the shredder) has the additional feature of facilitating the efficient handling of shredded material as baler feedstock, into a baler compartment, such as a paper baling apparatus, as is more fully described below.
Preferred embodiments of the invention are described below with reference to the accompanying drawings, which are briefly described below.
Many of the fastening, connection, manufacturing and other means and components utilized in this invention are widely known and used in the field of the invention described, and their exact nature or type is not necessary for an understanding and use of the invention by a person skilled in the art or science; therefore, they will not be discussed in significant detail. Furthermore, the various components shown or described herein for any specific application of this invention can be varied or altered as anticipated by this invention and the practice of a specific application or embodiment of any element may already be widely known or used in the art or by persons skilled in the art or science; therefore, each will not be discussed in significant detail.
The terms “a”, “an”, and “the” as used in the claims herein are used in conformance with long-standing claim drafting practice and not in a limiting way. Unless specifically set forth herein, the terms “a”, “an”, and “the” are not limited to one of such elements, but instead mean “at least one”.
The term “input hopper” as used herein is broader than its typical meaning, and without limitation, includes hoppers and any other temporary storage or containment structure for receiving the feedstock material to be shredded. The hopper may then directly or indirectly provide the feedstock material to the feedstock handling system for feeding to the shredder.
It will be noted that the storage area may, but need not have a dust control system which is comprised of fluid nozzles 8 and fluid conduit 7. The dust control system can be activated to reduce and control the level of dust in the storage area which in turn controls the level of dust when the storage area is emptied.
In order to provide for a mobile shredding system in which the shredder may be operated while the truck or vehicle is being driven, this mobile shredding system preferably includes shredder engine 10 separate from the vehicle or truck engine, hydraulic pump 11, hydraulic lines 12 and 13, and hydraulic motors or drivers 14 and 15 for providing power to the various components of the shredding system, as will be described more fully below. The shredder engine 10 would include all the ancillary items necessary to operate it, such as a gas tank, an ignition system, and the like.
It should be noted that while the shredding system in
The shredder engine 10 may be a diesel or a gas engine, as no one particular type is required to practice this invention. The hydraulic components such as the hydraulic pump 11, hydraulic lines 12 & 13, and the hydraulic drives 14 and 15, are also well known in the art. Alternatively, an engine could drive a generator which would provide electricity to individual motors or drives for the various applications required by this invention, as described more fully below. An example of a preferred engine is a Cummins diesel engine, 3.3 liter 85 horsepower. Exemplary hydraulic motors/drives are those such as Eaton Hydraulic motor 101-1016-008, and a hydraulic pump such as Permco pump P3000 3 section.
It will also be noted by those of ordinary skill in the art that other types of conveyors or conveyor equipment may be used as the second conveyor, with the key being a moving surface spaced apart from the first conveyor and which moves excess feedstock from around the feed aperture. An example of a different conveyor of the excess feedstock at the feed aperture is a Feeder Beater Drum as produced and available from Cash Hardware Company, possibly with fingers, shields, heads and sprocket, and which are intended to be within the definition of conveyor. These may be similar to the feed drum, only with the finger and shield mechanism preferably included.
The feedstock 21 being fed into the hopper 3 is fed or output to first conveyor 35 where it is moved in conveyor direction 36 toward the feed aperture 40. In many situations there will be more material to shred than can easily or efficiently be passed through feed aperture 40 and the excess feedstock not passing through feed aperture 40 will come into contact with second conveyor surface 31 of second conveyor 30 and be pushed or pulled upwardly in conveyor direction 32. This has the effect of lifting the feedstock material away from feed aperture 40, and prevents jam through feed aperture 40, and further allows for more efficient and effective metering or feeding of feedstock through feed aperture 40. The feedstock 21 coming in contact with second conveyor surface 31 is lifted and eventually falls back toward feed aperture 40 and will eventually be fed through it at a time when it can more readily be received through feed aperture 40.
Feedstock passing through feed aperture 40 then encounters feed drum 41 rotating on shaft or feed drum axis 50. It is preferred but not required that feed drum 41 include feed projections 42 which assist in grabbing or engaging feedstock passing through to urge it to continue to flow toward shredder 43. Feed drum 41 is rotated by hydraulic drive 14 in the manner shown in
As is better illustrated in later figures and more fully described below, feed drum 41 is bias mounted on a pivot arm such that it may move in the direction indicated by direction arrow 70, the feed drum 41 being biased in the downward direction, as is described more fully below. Allowing movement of feed drum 41 allows for larger pieces of feedstock to pass through to the shredders without clogging or jamming the system in and around feed drum 41 and feed aperture 40, while continuing to feed or provide feedstock 21 to the shredder 43.
The shredder 43 may be any one of a number of different types of shredders within the contemplation of this invention, as no one in particular is required to practice this invention.
The shredder screen output 61 provides or delivers material to augers 62, which are disposed to receive the shredded material. Augers 62 are rotated by auger shafts 62a and move the shredded material in direction 63 and causes it to further move in direction 70. The material exiting the shredder typically includes a substantial amount of air and is very fluffy. Augers 62 serve to compact or pre-pack the shredded material before it is dropped into the area of the ram to be pushed through system output 5, i.e. to condense it or reduce the quantity of air in the volume of shredded material.
This pre-packing or compaction combined with the action of the ram 66 allows for more material to be moved through and handled by the shredding system. Hydraulic cylinder 64 pushes hydraulic cylinder shaft 65 which is attached to ram 66 to move material received from auger 62 out system output 5. Hydraulic cylinder 64 is mounted to housing 4 and provides the movement indicated by the arrows on a continuous basis during operation.
The shredded material received from augers 62 is received in discharge area 90, and ram 66 pushes the shredded material through discharge area outlet 90a. As more material passes through and is pushed through discharge area outlet 90a, it pushes the material through system output 5 and into storage area 6 with the truck enclosure (as shown more fully in FIG. 1).
The system output chute 5 can place or deliver shredded material into shredded material storage area 6 in any one of a number of different ways but all within the contemplation of this invention. One such way, a preferred way, is through the utilization of a movable wall system as disclosed in U.S. Pat. No. 5,542,617, previously incorporated herein by reference.
First drive chain 74 provides rotation to second conveyor drive gear 77 through second conveyor axis 51. Second drive gear 78 is operably connected to second drive chain 75 to provide rotation to third drive gear 79, which provides rotational drive to feed drum 41 via fourth drive gear 80.
While there are many different drive gearing and other arrangements which may be used to provide the rotation to the feed drum 41, the conveyor and the shredder 43, no one in particular is required to practice the invention. The preferred method as shown in
The two conveyors deliver balestock through feed aperture 140, and at the exit end of feed aperture 140 is feed drum 141, which provides or delivers balestock material to augers 162, which are disposed to receive the balestock material. Augers 162 are rotated by auger shafts 162a and move the balestock material in direction 163 and causes it to further move in direction 170. The material typically includes a substantial amount of air and is very fluffy. Augers 12 serve to compact or pre-pack the balestock material before it is dropped into the discharge area of the ram 166 to be pushed through system output 105, i.e. to condense it or reduce the quantity of air in the volume of balestock material.
This pre-packing or compaction combined with the action of the ram 166 allows for more material to be moved through and handled by the material handling system for balers 100. Hydraulic cylinder 164 pushes hydraulic cylinder shaft 165 which is attached to ram 166 to move balestock material received from auger 162 and move it out system output 105. Hydraulic cylinder 164 is mounted to housing 104 and provides the movement indicated by the arrows on a continuous basis during operation.
The balestock material received from augers 162 is received in discharge area 190, and ram 166 pushes the balestock material through discharge area outlet 190a. As more material passes through and is pushed through discharge area outlet 190a, it pushes the balestock through system output 1055 and into the baler input 119a of the baler 119.
The system output chute 105 can place or deliver balestock material into baler 119 in any one of a number of different ways but all within the contemplation of this invention, such as from the side as shown, or from the top.
As can be seen the material handling system for balers is very similar to the shredding system, absent the shredder. It also may or may not include the feed drum 141, depending on the application, all within the contemplation of this invention.
In compliance with the statute, the invention has been described in language more or less specific as to structural and methodical features. It is to be understood, however, that the invention is not limited to the specific features shown and described, since the means herein disclosed comprise preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted in accordance with the doctrine of equivalents.
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