The present invention relates generally to machines used to sort materials and mixed recyclable materials.
Ballistic separators are used to separate materials based on mechanical properties. A paddle is typically attached to two synchronized crankshafts such that the paddle moves in a circular or elliptical motion. The paddles form a bed that is typically angled upward, and angled cleats are added to the surface. Each adjacent paddle is typically rotationally offset so that the paddles move into the forward phase in series instead of moving together. The forward toss of the ballistic separator will move a fraction of the material—flat and flexible materials—up the paddle once per revolution, moving from cleat to cleat, while round, heavy or voluminous materials (a second fraction) will bounce off the paddles and not engage the cleats. This “rolling” fraction then bounces off the back lower edge of the inclined bed, separating the flat and rolling fractions. Typically, the paddles will also have sizing grates built in, such that materials smaller than the grate size will pass through the paddle rather than moving up or down.
Due to the need to engage the flat and flexible materials with the cleats and paddles, there is an upper limit to how quickly the paddles can rotate before the material disengages and no longer climbs the paddles. This limits the rotational speed of the paddles, which in turn limits the surface velocity of the flat fraction as it climbs the machine and moves forward once per revolution, putting an upper limit on the capacity of the machine to process flat material. In addition, the higher the bed is angled, the better it is at bouncing the rolling fraction backward, increasing separation efficiency. However, the higher the angle of inclination, the more difficult it is for flat material to climb, as it reduces the throw distance, and there is a chance that material will not climb to the next cleat with every rotation, further decreasing throughput. At some angle of inclination, flat material will no longer climb the bed, and all material will fall off the back.
Ballistic Separators are known to be of low cost to operate per hour in comparison to machines of similar function, such as disc screens. However, their limitations in throughput and efficiency limit their utility and increase their operational cost per volume processed rather than per hour operated. An invention to increase the throughput of the machine would allow for a combination of low operating cost, high throughput, and high separation efficiency.
For example, when processing recyclable packaging material consisting of a mixture of paper, corrugated containers, plastic bottles, and metal cans, glass and finds, and other residual items such as film plastics, a typical ballistic separator will have an input capacity of around 7 tons per hour, of which approximately 4 tons per hour is flat material such as paper and film plastic. Such a machine will typically have eight paddles, each of which is about a foot and a half or half a meter wide, for an overall width of around 12 feet or four meters. An equivalently sized disc screen, processing the same material, will have an input capacity of around 16 tons per hour.
Different paddles and cleat configurations can be used to attempt to increase either throughput or angle of inclination. For example, longer cleat spacing will allow material to move further up the paddle with each rotation, increasing throughput, but will also limit the angle of inclination of the paddles, decreasing separation efficiency. Taller cleats can be used to increase the angle of inclination of the paddles, but flat material will struggle to climb over the cleats, decreasing throughput.
There have been attempts to increase the travel speed of flat materials beyond what is generated by the rotation of the paddles. Most notably, fans are added to the back of the paddles in an attempt to blow flat materials forward, increasing throughput or angle of inclination, as the flat material moves further forward with each rotation. However, this has met with limited success, as paddles are typically around 20 feet or 6 meters long, and air pushed by a fan will disperse before reaching the upper end of the paddle, so that the throughput and separation efficiency of the machine is greater toward the back than toward the front, and material will tend to accumulate as it slows down, therefore limiting the machine to the mechanical properties of the unassisted region.
Other attempts have focused on making the machine wider. For example, there was a 10 meter wide machine produced. However, the amount of torque required from the output gearbox grows linearly with the number of paddles, while the diameter of the crankshaft is still limited to what will fit below the paddles. More room can be created by increasing the displacement radius of the crankshaft; however, this will increase radial forces and momentum on the mechanical components of the shaft. The above machine quickly destroyed itself due to the forces of the machine. Currently, the widest commercially available machine is about eight meters wide. Making a machine that wide creates further problems, as material must be fed to and gathered from the machine from multiple points, creating issues with integrating the machine and driving up the expense of installing the machine. Moreover, the crankshafts get much more expensive as they grow in diameter, creating further expense issues. The above eight-meter wide machine still has less throughput than a typical disc screen.
What is therefore needed is a novel ballistic separator that overcomes these deficiencies.
The following presents a simplified summary in order to provide a basic understanding of some aspects of the claimed subject matter. This summary is not an extensive overview, and is not intended to identify key/critical elements or to delineate the scope of the claimed subject matter. Its purpose is to present some concepts in a simplified form, as a prelude to the more detailed description that is presented later.
The apparatus, systems, and methods described herein elegantly solve the problems presented above. A novel ballistic separator for separating material is disclosed. The separator includes a separator bed adapted to contact the material, with the bed further comprising an agitator and an amplified agitator. The amplified agitator has a total lateral displacement. The separator also includes a crankshaft kinematically linked to the agitator and the amplified agitator. The crankshaft has a total lateral displacement. The amplified agitator total lateral displacement is larger than the crankshaft total lateral displacement.
A second crankshaft may be kinematically linked to the agitator and the amplified agitator. Optionally, a plurality of agitators and a plurality of amplified agitators may be kinematically linked to the crankshaft. The crankshaft may have multiple phase regions, and adjacent amplified agitators may be connected to different phase regions.
The agitator may have a total lateral displacement that is less than the amplified agitator total lateral displacement. The agitator's movement may trace a circle, while the amplified agitator's movement may trace a non-circle.
The amplified agitator comprises a saw tooth, and may wrap around a portion of the agitator. Also, the amplified agitator total lateral displacement may be at least 1.5 times larger than the crankshaft total lateral displacement.
The amplified agitator may also be kinematically linked to the crankshaft by a cam follower. The cam follower may include a notch, an agitator pivot connected to the agitator and an amplified agitator pivot connected to the amplified agitator. A cam may be disposed of in the notch, and the cam may be fixed relative to the movement of the crankshaft. Alternatively, the cam follower may include a notch, a fixed pivot and an amplified agitator pivot connected to the amplified agitator. A cam may be disposed of in the notch, and the cam may be connected to the agitator.
The separator may also have an alignment groove and an alignment pin disposed therein, wherein the alignment groove and alignment pin maintain a preset relative movement of the agitator relative to the amplified agitator.
A ballistic separator for separating material is also disclosed that includes a separator bed adapted to contact the material. The bed has an agitator with a top surface and a conveyor adapted to transport the material along the top surface. A crankshaft is kinematically linked to the agitator and has a rotation action. The conveyor is connected to the rotation action of the crankshaft so as to move the conveyor relative to the top surface.
The conveyor may be a belt, a chain, a plurality of rotating shafts or a disc screen. the conveyor may be connected to the rotation action via a belt or a chain or may be directly connected.
The separator may have a second agitator with a second top surface having a second conveyor adapted to transport material along the top surface. The crankshaft may be kinematically linked to the second agitator, and the second conveyor may be connected to the rotation action of the crankshaft so as to move the second conveyor relative to the second top surface. The second agitator may be positioned adjacent to the agitator. The second conveyor may be a belt, a chain, a plurality of rotating shafts or a disc screen. The crankshaft may have multiple phase regions, and the agitator and second agitator are connected to different phase regions.
The bed may be inclined. The bed may also have a lower edge and a higher edge, and the separator separates the material into a first fraction located adjacent to the higher edge and a second fraction located adjacent to the lower edge. The bed may be perforated to allow a third fraction of the material to travel through the bed.
Additional aspects, alternatives and variations, as would be apparent to persons of skill in the art, are also disclosed herein and are specifically contemplated as included as part of the invention. The invention is set forth only in the claims as allowed by the patent office in this or related applications, and the following summary descriptions of certain examples are not in any way to limit, define or otherwise establish the scope of legal protection.
The invention can be better understood with reference to the following figures. The components within the figures are not necessarily to scale, emphasis instead being placed on clearly illustrating example aspects of the invention. In the figures, like reference numerals designate corresponding parts throughout the different views and/or embodiments. It will be understood that certain components and details may not appear in the figures to assist in more clearly describing the invention.
Reference is made herein to some specific examples of the present invention, including any best modes contemplated by the inventor for carrying out the invention. Examples of these specific embodiments are illustrated in the accompanying figures. While the invention is described in conjunction with these specific embodiments, it will be understood that it is not intended to limit the invention to the described or illustrated embodiments. To the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Particular example embodiments of the present invention may be implemented without some or all of these specific details. In other instances, process operations well known to persons of skill in the art have not been described in detail in order not to obscure unnecessarily the present invention. Various techniques and mechanisms of the present invention will sometimes be described in singular form for clarity. However, it should be noted that some embodiments include multiple iterations of a technique or multiple mechanisms unless noted otherwise. Similarly, various steps of the methods shown and described herein are not necessarily performed in the order indicated, or performed at all in certain embodiments. Accordingly, some implementations of the methods discussed herein may include more or fewer steps than those shown or described. Further, the techniques and mechanisms of the present invention will sometimes describe a connection, relationship or communication between two or more entities. It should be noted that a connection or relationship between entities does not necessarily mean a direct, unimpeded connection, as a variety of other entities or processes may reside or occur between any two entities. Consequently, an indicated connection does not necessarily mean a direct, unimpeded connection, unless otherwise noted.
The following list of example features corresponds to the figures and is provided for ease of reference, where like reference numerals designate corresponding features throughout the specification and figures:
Amplified Ballistic Separator 10
Separator Bed 12
Crankshaft 15, 15A
Second Crankshaft 17
Agitator (paddle) 20
Agitator (used with wrap-around) 20A
Perforations 22
Amplified Agitator (Saw Tooth) 25
Amplified Agitator (Wrap-Around, also Saw Tooth) 25A
Alignment Groove 26
Alignment Pin 27
Crankshaft total lateral displacement 30
Amplified Agitator Total Lateral Displacement 35
Cam 40
Cam Follower 45
Alternate Cam Follower 45A
Cam Follower Notch 47
Fixed Pivot 48
Agitator Pivot 50
Amplified Agitator Pivot 55
Travel Trace of Agitator Pivot 60
Agitator Total Lateral Displacement 62
Travel Trace of Amplified Agitator Pivot 65
Amplified Lateral Movement of Amplified Agitator 70
Crankshaft Saddle 75
Agitator Connection Structure 80
Crankshaft Phase 1 Region 85
Crankshaft Phase 2 Region 90
Mixed Material Load Position 100
First Fraction of Separated Material Movement 105
First Fraction of Separated Material Offload Position 110
Second Fraction of Separated Material Movement 115
Second Fraction of Separated Material Offload Position 120
Third Fraction of Separated Material Offload Position 122
Lower Edge of Bed 125
Higher Edger of Bed 130
Straight Shaft 135
Eccentric Discs 140
Straight Shaft/Eccentric Disc Mount 145
Rotation of Eccentric Disc Relative to Crankshaft Saddle 150
Ballistic Separator 200
Top Surface 205
Conveyor 210
Conveyor Movement Relative to Top Surface 212
Crankshaft Rotation Action 214
Sheave 215
Sheave Rotation 217
Belt/Chain 220
Adjacent (Second) Agitator 225
Conveyor (Rotating Shafts) 230
Space Between Rotating Shafts 235
Conveyor (Disc Screen) 240
Space Between Discs 245
Eccentric Conveyor Hub 250
Conveyor Hub Connecting Shaft 255
Conveyor Hub Bearing 260
Connecting Shaft Input 265
The amplified ballistic separator 10 may also have an alignment groove 26 and an alignment pin 27 disposed therein that maintain a preset relative movement of the agitator 20 relative to the amplified agitator 25. Instead of having only one agitator and/or one amplified agitator kinematically linked to the crankshaft 15 or 17, the separator bed 12 may comprise a plurality of agitators 20 and a plurality of amplified agitators 25, both pluralities kinematically linked to a crankshaft 15, 17. The amplified agitator 25 may comprise a saw tooth.
The kinematic linkage of the agitator 20 and the amplified agitator 25 to the crankshaft 15 may be achieved through a cam follower 45. The cam follower 45, which links the agitator 20 and the amplified agitator 25 to the crankshaft 15, may include a notch 47, an agitator pivot 50 connected to the agitator 20, and an amplified agitator pivot 55 connected to the amplified agitator 25. A cam 40 may be disposed of in the notch 47, and the cam 40 may be fixed relative to the movement of the crankshaft 15.
Although heretofore the amplified ballistic separator 10 has been described as comprising an agitator 20 and an amplified agitator 25, in some variations the separator 10 could conceivably be constructed with just an amplified agitator 25 with some mechanisms or mechanical support built into the amplified agitator 25 to replace some of the functions of the agitator 20. Such an amplified ballistic separator 10 for separating and sorting various materials could be constructed with a separator bed 12 adapted to contact the material, the bed comprising an amplified agitator 25 or 25A having an amplified agitator total lateral displacement 35, a crankshaft 15 or 15A having a crankshaft total lateral displacement 15 or 15A and kinematically linked to the amplified agitator 25 or 25A, wherein the amplified agitator total lateral displacement 35 is larger than the crankshaft total lateral displacement 30. Such a separator 10 could also comprise a second crankshaft 17 kinematically linked to the amplified agitator 25 or 25A. Indeed, the separator bed 12 in such a variant embodiment of the ballistic separator 10 may comprise a plurality of amplified agitators 25 or 25A kinematically linked to the crankshaft 15 or 15A. Moreover, the crankshaft 15 or 15A may have multiple phase regions and adjacent amplified agitators 25 or 25A connected to the different phase regions. The amplified agitator 25 or 25A may comprise a saw tooth and may be kinematically linked to the crankshaft 15 or 15A by a cam follower 45 or 45A. The amplified agitator total lateral displacement 35 may be at least 1.5 times larger than the crankshaft total lateral displacement 30. The separator bed 12 may be inclined. The bed 12 may have a lower ledge 125 and a higher edge 130, and the separator 10 may be constructed to separate the material into a first fraction located adjacent to the higher edge and a second fraction located adjacent to the lower edge. Also, the separator bed 12 may be perforated to allow a third fraction of the material being sorted to travel through the bed 12.
Having a second agitator 225 increases the surface area of the separator bed 12, therefore increasing the throughput of the ballistic separator 200. As in the embodiments disclosed previously in the present invention, the separator bed 12 may be inclined to separate rolling materials from flat materials. The inclined separator bed 12 may have a lower edge 125 and a higher edge 130, and the ballistics separator 200 may be constructed to separate the material being sorted into a first fraction located adjacent to the higher edge 130, as well as a second fraction located adjacent to the lower edge 125. As
The ballistic separator 200 previously implemented could be implemented with this variation shown in
The invention has been described in connection with specific embodiments that illustrate examples of the invention but do not limit its scope. Various example systems have been shown and described having various aspects and elements. Unless indicated otherwise, any feature, aspect or element of any of these systems may be removed from, added to, combined with or modified by any other feature, aspect or element of any of the systems. As will be apparent to persons skilled in the art, modifications and adaptations to the above-described systems and methods can be made without departing from the spirit and scope of the invention, which is defined only by the following claims. Moreover, the applicant expressly does not intend that the following claims “and the embodiments in the specification to be strictly coextensive.” Phillips v. AHW Corp., 415 F.3d 1303, 1323 (Fed. Cir. 2005) (en banc).
This application claims priority as the non-provisional of U.S. Patent Application 62/932,080 filed on Nov. 7, 2019, U.S. Patent Application 62/912,574 filed on Oct. 8, 2019, and U.S. Patent Application 62/814,107 filed on Mar. 5, 2019, all of which are assigned to the same assignee as the present application. Each of these applications is incorporated herein by reference. This application related to U.S. patent application Ser. No. 16/193,815 filed on Nov. 16, 2018, U.S. Pat. No. 8,517,181 issued on Aug. 27, 2013, U.S. Pat. No. 9,027,762 issued on May 12, 2015, U.S. Patent Application 62/037,038 filed on Aug. 13, 2014, U.S. patent application Ser. No. 14/797,088 filed on Jul. 11, 2015, U.S. Patent Application 62/153,901 filed on Apr. 28, 2015, U.S. patent application Ser. No. 14/797,090 filed on Jul. 11, 2015, U.S. Patent Application 62/60,219 filed on May 12, 2015, U.S. Patent Application 62/153,901 filed on Apr. 28, 2015, U.S. patent application Ser. No. 14/811,164 filed on Jul. 28, 2015, U.S. patent application Ser. No. 14/797,093 filed on Jul. 11, 2015, and U.S. Patent Application 62/238,805 filed on Oct. 8, 2015, all of which are assigned to the same assignee as the present application. Each of these applications is incorporated herein by reference.
Number | Date | Country | |
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62932080 | Nov 2019 | US | |
62912574 | Oct 2019 | US | |
62814107 | Mar 2019 | US |