US20020110427A1 - System and method for conveying loose material - Google Patents
System and method for conveying loose material Download PDFInfo
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- US20020110427A1 US20020110427A1 US09/782,903 US78290301A US2002110427A1 US 20020110427 A1 US20020110427 A1 US 20020110427A1 US 78290301 A US78290301 A US 78290301A US 2002110427 A1 US2002110427 A1 US 2002110427A1
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- Prior art keywords
- conduit
- opening
- frame assembly
- wall
- hopper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/44—Endless conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/14—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for moving bulk material in closed conduits, e.g. tubes
Definitions
- the present invention relates to apparatus, systems and methods for conveying quantities of loose material to a remote location.
- Loose material such as excavation dirt, soil mixtures, grains, bark, gravel and mulch
- heavy equipment such as front loaders and dump trucks.
- Heavy equipment typically must be transported to and from a location on a road, and requires a relatively flat surface on which to operate.
- shovels and wheelbarrows are not an optimal means for conveying large quantities of loose material, even over short distances.
- Conveyor belts can be useful in situations where a large amount of loose material must be conveyed over a long distance, even over steep or uneven terrain. Conveyor belts, however, are bulky, complicated and difficult to set up. Consequently, conveyor belts may not be economical for small jobs or other short-term work.
- blower systems can be extremely large and cumbersome. Accordingly, these systems require road access similar to heavy equipment. In addition, because blower systems use low pressure air to convey the loose material, the blower systems typically can only convey material over short distances (i.e., 250 ft. or less).
- blowers are ineffective at properly depositing the loose materials due to the low pressure air used to convey the material.
- the material exiting the distal end of the blower hose merely falls against the hillside. Consequently, after depositing the material with the blower hose, the worker must still manually compact the material against the hillside.
- the present invention relates to apparatus, systems and methods for conveying loose material between two locations, such as a truck or trailer and either a work site or a storage location.
- the apparatus comprises a hollow conduit made from a rigid material and having a fixed size and shape, and a mechanical conveyor having a plurality of spaced apart, interconnected conveyor elements that entrap the loose material and move it along a material path.
- the hollow conduit extends along a portion of the material path, and the conveyor elements-and with them the loose material-pass through the conduit.
- a first hole through the wall of the conduit is adapted to communicate with a source of high pressure air, and a second opening through the wall of the conduit is sized and shaped to allow the loose material in a fluent state to pass therethrough.
- the mechanical conveyor moves loose material to the delivery location
- the high pressure air entering the conduit through the first opening fluidizes the loose material and carries it out the second opening.
- the second opening is adapted to be connected to a hose for carrying the fluidized loose material to a remote location at a high rate of speed.
- the mechanical conveyor continues to transport loose material through the conduit, the loose material continues to be fluidized and transported along the hose to the remote location.
- the mechanical conveyor and conduit described above are incorporated into a system comprising a hopper.
- the mechanical conveyor communicates with the hopper to convey large quantities of loose material to the conduit for substantially constant delivery to the remote location.
- the hopper, mechanical conveyor and conduit described above are fixedly coupled to a first frame assembly.
- the first frame assembly is then movably coupled to a second frame assembly.
- the second frame assembly can be configured for transport, such as on a truck or trailer.
- the first frame assembly moves with respect to the second frame assembly between a first position for non-use and/or transport, and a second position for operation.
- FIG. 1 is an isometric view schematically illustrating a system for conveying loose material according to an embodiment of the present invention.
- FIG. 2 is a plan view schematically illustrating a portion of the system for conveying loose material of FIG. 1.
- FIG. 3 is a sectional view of a portion of the system for conveying loose material of FIG. 2, viewed along Section 3 - 3 .
- FIG. 4 is an elevation view schematically illustrating a system for conveying loose material according to another embodiment of the present invention.
- FIG. 5 is a plan view of the system for conveying loose material of FIG. 4.
- FIG. 6 is a sectional view of the system for conveying loose material of FIG. 5, viewed along Section 6 - 6 .
- the present invention is generally directed toward apparatus, systems and methods for conveying loose material. Many specific details of certain embodiments of the invention are set forth in the following description and in FIGS. 1 - 6 to provide a thorough understanding of such embodiments. One skilled in the art, however, will understand that the present invention may have additional embodiments, or may be practiced without several of the details described in the following description.
- FIG. 1 illustrates a material conveyance system 10 according to one particular embodiment of the present invention.
- the material conveyance system 10 generally incorporates a hopper 20 , a compression tube 30 , a conveyor belt 40 , an air compressor 60 and a delivery hose 70 .
- the hopper 20 is configured to retain a quantity of loose material 12 for introduction into the material conveyance system 10 .
- the hopper 20 has a generally rectangular cross-section as viewed from above, and is tapered from top to bottom such that the cross-section at the top is larger than that at the bottom.
- the hopper 20 is positioned on top of the compression tube 30 to allow the loose material 12 to enter the compression tube 30 from the hopper 20 .
- an opening 22 is located in the bottom of hopper 20 to allow loose material 12 (not shown in FIG. 2 for clarity) to pass from the hopper 20 to the compression tube 30 .
- the lower portion of the hopper 20 is actually saddled onto a pipe extending from the compression tube 30 , and accordingly, the opening 22 is cut into the extending pipe.
- the size, shape and orientation of the hopper 20 and the compression tube 30 can vary dramatically without diverging from the spirit of the present invention.
- a hole 24 is positioned in a wall of the hopper 20 to allow air to be introduced into the hopper to fluff the loose material 12 , if desired.
- the hole 24 is connected by tubing 26 to the compression tube 30 in the illustrated embodiment.
- pressurized air in the compression tube 30 that does not exit through the delivery hose 70 passes from the compression tube 30 , through the tubing 26 and into the hopper 20 through the hole 24 .
- the hole 24 could similarly be connected to an air compressor or blower, or otherwise configured to introduce air into the hopper 20 .
- the compression tube 30 comprises a first arm 32 , a second arm 34 and a leg 36 .
- the compression tube 30 is fabricated from a 6 x 6 piping “T.”
- the compression tube 30 can be manufactured from any rigid material suitable for the conditions discussed below, such as carbon steel, stainless steel, alloys, or other materials with similar characteristics.
- the compression tube 30 is fabricated from steel, and is lined on its interior surface with chrome. The size of the compression tube 30 can vary, as can the relative sizes of the first and second arms 32 / 34 with respect to the leg 36 .
- the compression tube 30 can be fabricated from a 4 ⁇ 4 T, a 6 ⁇ 4 T, an 8 ⁇ 6 T, an 8 ⁇ 8 T, or a wide variety of other variations.
- the compression tube 30 can have flanged ends, welded ends, or can otherwise be configured for attachment into the system as discussed herein.
- inlets 38 a / 38 b / 38 c / 38 d are located along the length of the first and second arms 32 / 34 of the compression tube 30 .
- the inlets 38 a / 38 b / 38 c / 38 d are staggered along the compression tube 30 , both longitudinally and radially.
- the centermost inlets 38 b / 38 c are positioned roughly opposite the leg 36 of the compression tube 30 .
- the outside inlets 38 a / 38 d are located outside the width of the leg 36 along first arm 32 and second arm 34 , respectively, and are angled toward the leg.
- the inlets 38 a / 38 b / 38 c / 38 d are fabricated from one inch pipe welded to the compression tube 30 .
- the inlets 38 a / 38 b / 38 c / 38 d can be fabricated from metal or other suitable materials, as generally understood in the art.
- the conveyor belt 40 consists of a number of resilient disks 42 connected to a flexible cable 44 .
- a stabilizer 46 retains the disks 42 in the proper alignment, and a plate 48 reinforces the strength of the disks 42 .
- the disks 42 are fabricated from a strong, resilient polymer, and the cable 44 is fabricated from a strand of flexible steel cable wrapped in a polymer sheet.
- the disks 42 are cylindrical and sized to fit closely within the compression tube 30 . It is understood, however, that the size and shape of the disks 42 can change to correspond with the size and shape of the compression tube 30 . For example, if the compression tube 30 were square conduit instead of tubular pipe, the disks 42 could instead be square sheets of resilient material sized and shaped to contact the walls of the conduit.
- the conveyor belt 40 is connected in a continuous loop with one end wrapped around a gear 50 and the other wrapped around a pulley 52 .
- the gear 50 has a number of teeth 54 configured to engage the disks 42 on the conveyor belt 40 , and to drive the conveyor belt 40 during operation.
- a drive shaft 56 at the center of the gear 50 is engaged with a hydraulic or other motor (FIG. 1) to rotate the gear 50 .
- a rotating shaft 58 at the center of pulley 52 is engaged with bearings to allow the pulley 52 to rotate freely in response to movement of the conveyor belt 40 under the power of the gear 50 .
- the relative positioning of the gear 50 and the pulley 52 retains the conveyor belt 40 in a taut state.
- a portion of the conveyor belt 40 passes through the hopper 20 under the opening 22 . Also, a portion of the conveyor belt 40 passes through the first and second arms 32 / 34 of the compression tube 30 .
- the compression tube 30 is butted against the hopper 20 . It is understood, however, that the relative positioning of the compression tube 30 with respect to the hopper 20 can be varied without diverging from the spirit of the present invention.
- An air compressor 60 is coupled to the inlets 38 a / 38 b / 38 c / 38 d by a high-pressure air header 62 .
- a first valve 64 positioned between the air compressor 60 and the header 62 can be manipulated to isolate the header 62 from the air compressor 60 .
- each of the inlets 38 a / 38 b / 38 c / 38 d is fitted with a second valve 66 .
- the second valves 66 can be manipulated to adjust the flow of air between the header 62 and the respective inlet 38 a / 38 b / 38 c / 38 d .
- the various inlets can have four distinct flow rates, or can be adjusted to have the same flow rate.
- the delivery hose 70 is coupled to the leg 36 of the compression tube 30 .
- the delivery hose 70 is a four inch, flexible hose configured to direct the fluidized loose material 12 exiting the leg 36 of the compression chamber 30 to a deposition site 72 (FIG. 1).
- the delivery hose 70 can be of larger or smaller diameter, and can be connected to the leg 36 directly or with a reducer.
- the delivery hose 70 can be attached to the leg 36 by any suitable manner known in the art.
- the material conveyance system 10 is transported to a job site, such as by trailing the system on a trailer 14 having wheels 16 .
- the hopper 20 is then filled with loose material 12 , such as by shovel or front loader, and the air compressor 60 is activated to begin flowing high-pressure air through one or more of the inlets 38 a / 38 b / 38 c / 38 d in the compression tube 30 .
- the conveyor belt 40 is then turned on to drive the disks 42 through the hopper 20 and the compression tube 30 before returning again to the hopper 20 . As best illustrated in FIG.
- a trough 18 extends around the remaining portion of the conveyor belt 40 to return any remaining loose material 12 not expressed through the delivery hose 70 back to hopper 20 for recycling.
- the compression tube 30 is made from rigid material, the engagement between the conveyor belt 40 and the compression tube 30 can be designed such that no air escapes from the system 10 other than through the delivery hose 70 . Consequently, the system 10 can be highly efficient, while not requiring any adjustment as necessary in the prior art.
- the conveyor belt 40 can be removed from the gear 50 and pulley 52 , and can be quickly and easily replaced with a new conveyor belt. Because the new conveyor belt has disks 42 of a known size to correspond with the fixed size of the compression tube 30 , the user can be assured that the new disks will create the proper seal when passing through the compression tube, again without the need for adjustment.
- FIGS. 4 - 6 illustrate a material conveyance system 110 according to another embodiment of the present invention.
- the material conveyance system 110 is in many ways the same as the material conveyance system 10 described above, except for the distinctions discussed below. Consequently, any details not conflicting with the description of the above embodiment, as well as any omissions, can be assumed to be the same as that described above.
- a hopper 120 is positioned at an extreme end of a trailer 114 opposite a hook-up 118 for connection to a towing vehicle (not shown). Accordingly, the hopper 120 can be filled and the material conveyance system 110 operated without removing the trailer 114 from the tow vehicle.
- the material conveyance system 110 is configured for traveling or long-term storage. As illustrated in FIG. 6, the material conveyance system 110 is configured for operation. When traveling, the hopper 120 is raised above the ground to minimize obstructions to travel.
- a frame 123 to which a hopper 120 is attached, pivots with respect to a trailer 114 until the hopper 120 and/or the frame 123 contacts the ground.
- the operating parts of the material conveyance system 110 are attached to the frame 123 to pivot therewith about a hinge 125 between the traveling position and the operating position.
- a gear 150 and a drive shaft 156 are attached by a pair of opposing frame members 127 to the frame 123 .
- a pulley 152 and a rotating shaft 158 are attached by a pair of structural members 129 to the frame 123 .
- the compression tube 130 is similarly fixed to the frame 123 .
- the hopper 120 and other functioning elements of the material conveyance system 110 are rotated forward onto the trailer 114 so as not to obstruct the trailer's ability to travel.
- the functioning portions of the material conveyance system 110 are rotated upward and/or backward, away from the trailer 114 to position the hopper 120 in a more convenient position for being filled.
- a delivery hose 170 can be coupled to the compression tube 130 , and the material conveyance system 110 can be operated substantially the same as described above to deliver loose material to a deposition site.
- an opening 122 (FIG. 5) in the base of the hopper 120 passes between the hopper 120 and an extension of the compression tube 130 to allow loose material to pass from the hopper 120 to the conveyer belt 140 and, in turn, to the compression tube 130 .
- each of the above embodiments is specifically designed to operate with high-pressure air, i.e., air at pressures greater than 40 psi, the systems can deliver loose materials to locations significantly further than any material conveyance systems of the prior art.
- the loose material can be delivered at a velocity high enough to deposit the materials with force.
- the system compresses soil or soil mixtures against a hillside. Therefore, deposition of soil mixtures for erosion control purposes using the present invention may eliminate the step of compacting the soil with a shovel or similar means.
- the high pressure and high energy of the present invention allows loose material to be delivered to a location more than 1,000 feet from the hopper. This distance is substantially greater than any known system of the prior art.
- This system can deliver loose materials through steep, rough and uneven terrain, and can therefore be used in substantially any situation.
- the material conveyance systems discussed above can be used to deliver materials to a work site, such as for erosion control as discussed above, or can be used to deliver materials from a particular site, such as removal of excavation materials, or delivery of grains or other commodities from a silo to a truck.
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Abstract
Description
- The present invention relates to apparatus, systems and methods for conveying quantities of loose material to a remote location.
- Loose material, such as excavation dirt, soil mixtures, grains, bark, gravel and mulch, are often transported between a storage location, a truck or other transport device, and/or a work site using heavy equipment such as front loaders and dump trucks. Heavy equipment, however, typically must be transported to and from a location on a road, and requires a relatively flat surface on which to operate. Where no road exists, where there is otherwise restricted access, or where the terrain is not suitable for operating heavy equipment, workers often resort to using shovels and wheelbarrows for moving loose material. For obvious reasons, shovels and wheelbarrows are not an optimal means for conveying large quantities of loose material, even over short distances.
- Systems incorporating conveyor belts or fans have been developed to convey loose material from a work site or truck to a remote road or other area. Two systems that incorporate fans can be seen at U.S. Pat. No. 5,181,804 to Wysong et al. and U.S. Pat. No. 5,556,237 to Rexius.
- Conveyor belts can be useful in situations where a large amount of loose material must be conveyed over a long distance, even over steep or uneven terrain. Conveyor belts, however, are bulky, complicated and difficult to set up. Consequently, conveyor belts may not be economical for small jobs or other short-term work.
- As illustrated in the above-referenced patents, known blower systems can be extremely large and cumbersome. Accordingly, these systems require road access similar to heavy equipment. In addition, because blower systems use low pressure air to convey the loose material, the blower systems typically can only convey material over short distances (i.e., 250 ft. or less).
- With respect to one particular application, i.e., erosion control on a hillside, the above methods prove to be particularly unsuited. Because erosion control problems are most commonly found on steep hillsides, often none of the heavy equipment or truck mounted equipment can get close to the work area. Belt conveyors and wheelbarrows can be used to convey the loose material to the site, but depositing the material in an effective manner is arduous work. The worker depositing the materials from the wheelbarrow or from the pile at the end of the belt conveyor must shovel the material into the proper location and compact the material to prevent it from eroding itself.
- Similarly, blowers are ineffective at properly depositing the loose materials due to the low pressure air used to convey the material. The material exiting the distal end of the blower hose merely falls against the hillside. Consequently, after depositing the material with the blower hose, the worker must still manually compact the material against the hillside.
- The present invention relates to apparatus, systems and methods for conveying loose material between two locations, such as a truck or trailer and either a work site or a storage location. In one embodiment, the apparatus comprises a hollow conduit made from a rigid material and having a fixed size and shape, and a mechanical conveyor having a plurality of spaced apart, interconnected conveyor elements that entrap the loose material and move it along a material path. The hollow conduit extends along a portion of the material path, and the conveyor elements-and with them the loose material-pass through the conduit. At a delivery location along the length of the conduit, a first hole through the wall of the conduit is adapted to communicate with a source of high pressure air, and a second opening through the wall of the conduit is sized and shaped to allow the loose material in a fluent state to pass therethrough. When the mechanical conveyor moves loose material to the delivery location, the high pressure air entering the conduit through the first opening fluidizes the loose material and carries it out the second opening. The second opening is adapted to be connected to a hose for carrying the fluidized loose material to a remote location at a high rate of speed. As the mechanical conveyor continues to transport loose material through the conduit, the loose material continues to be fluidized and transported along the hose to the remote location.
- In another embodiment of the present invention, the mechanical conveyor and conduit described above are incorporated into a system comprising a hopper. The mechanical conveyor communicates with the hopper to convey large quantities of loose material to the conduit for substantially constant delivery to the remote location.
- In yet another embodiment of the present invention, the hopper, mechanical conveyor and conduit described above are fixedly coupled to a first frame assembly. The first frame assembly is then movably coupled to a second frame assembly. The second frame assembly can be configured for transport, such as on a truck or trailer. The first frame assembly moves with respect to the second frame assembly between a first position for non-use and/or transport, and a second position for operation.
- FIG. 1 is an isometric view schematically illustrating a system for conveying loose material according to an embodiment of the present invention.
- FIG. 2 is a plan view schematically illustrating a portion of the system for conveying loose material of FIG. 1.
- FIG. 3 is a sectional view of a portion of the system for conveying loose material of FIG. 2, viewed along Section3-3.
- FIG. 4 is an elevation view schematically illustrating a system for conveying loose material according to another embodiment of the present invention.
- FIG. 5 is a plan view of the system for conveying loose material of FIG. 4.
- FIG. 6 is a sectional view of the system for conveying loose material of FIG. 5, viewed along Section6-6.
- The present invention is generally directed toward apparatus, systems and methods for conveying loose material. Many specific details of certain embodiments of the invention are set forth in the following description and in FIGS.1-6 to provide a thorough understanding of such embodiments. One skilled in the art, however, will understand that the present invention may have additional embodiments, or may be practiced without several of the details described in the following description.
- FIG. 1 illustrates a
material conveyance system 10 according to one particular embodiment of the present invention. Thematerial conveyance system 10 generally incorporates ahopper 20, acompression tube 30, aconveyor belt 40, anair compressor 60 and adelivery hose 70. Thehopper 20 is configured to retain a quantity ofloose material 12 for introduction into thematerial conveyance system 10. In the illustrated embodiment, thehopper 20 has a generally rectangular cross-section as viewed from above, and is tapered from top to bottom such that the cross-section at the top is larger than that at the bottom. Thehopper 20 is positioned on top of thecompression tube 30 to allow theloose material 12 to enter thecompression tube 30 from thehopper 20. - As best illustrated in FIGS. 2 and 3, an
opening 22 is located in the bottom ofhopper 20 to allow loose material 12 (not shown in FIG. 2 for clarity) to pass from thehopper 20 to thecompression tube 30. In the illustrated embodiment, the lower portion of thehopper 20 is actually saddled onto a pipe extending from thecompression tube 30, and accordingly, theopening 22 is cut into the extending pipe. The size, shape and orientation of thehopper 20 and thecompression tube 30, however, can vary dramatically without diverging from the spirit of the present invention. - A
hole 24 is positioned in a wall of thehopper 20 to allow air to be introduced into the hopper to fluff theloose material 12, if desired. Thehole 24 is connected bytubing 26 to thecompression tube 30 in the illustrated embodiment. Thus, pressurized air in thecompression tube 30 that does not exit through thedelivery hose 70 passes from thecompression tube 30, through thetubing 26 and into thehopper 20 through thehole 24. Thehole 24 could similarly be connected to an air compressor or blower, or otherwise configured to introduce air into thehopper 20. - As best illustrated in FIG. 3, the
compression tube 30 comprises afirst arm 32, asecond arm 34 and aleg 36. In the illustrated embodiment, thecompression tube 30 is fabricated from a 6x6 piping “T.” Thecompression tube 30 can be manufactured from any rigid material suitable for the conditions discussed below, such as carbon steel, stainless steel, alloys, or other materials with similar characteristics. In the illustrated embodiment, thecompression tube 30 is fabricated from steel, and is lined on its interior surface with chrome. The size of thecompression tube 30 can vary, as can the relative sizes of the first andsecond arms 32/34 with respect to theleg 36. For example, thecompression tube 30 can be fabricated from a 4×4 T, a 6×4 T, an 8×6 T, an 8×8 T, or a wide variety of other variations. Likewise, thecompression tube 30 can have flanged ends, welded ends, or can otherwise be configured for attachment into the system as discussed herein. - Four
inlets 38 a/38 b/38 c/38 d are located along the length of the first andsecond arms 32/34 of thecompression tube 30. In the illustrated embodiment, theinlets 38 a/38 b/38 c/38 d are staggered along thecompression tube 30, both longitudinally and radially. Thecentermost inlets 38 b/38 c are positioned roughly opposite theleg 36 of thecompression tube 30. Theoutside inlets 38 a/38 d are located outside the width of theleg 36 alongfirst arm 32 andsecond arm 34, respectively, and are angled toward the leg. In the illustrated embodiment, theinlets 38 a/38 b/38 c/38 d are fabricated from one inch pipe welded to thecompression tube 30. The inventor appreciates, however, that theinlets 38 a/38 b/38 c/38 d can be attached to thecompression tube 30 by threaded nipples, flanges, or by any other structure generally known in the art. Theinlets 38 a/38 b/38 c/38 d can be fabricated from metal or other suitable materials, as generally understood in the art. - As best illustrated in FIG. 3, the
conveyor belt 40 consists of a number ofresilient disks 42 connected to aflexible cable 44. At the location where thedisks 42 are fixed to thecable 44, astabilizer 46 retains thedisks 42 in the proper alignment, and aplate 48 reinforces the strength of thedisks 42. In the illustrated embodiment, thedisks 42 are fabricated from a strong, resilient polymer, and thecable 44 is fabricated from a strand of flexible steel cable wrapped in a polymer sheet. Thedisks 42 are cylindrical and sized to fit closely within thecompression tube 30. It is understood, however, that the size and shape of thedisks 42 can change to correspond with the size and shape of thecompression tube 30. For example, if thecompression tube 30 were square conduit instead of tubular pipe, thedisks 42 could instead be square sheets of resilient material sized and shaped to contact the walls of the conduit. - As illustrated in FIG. 2, the
conveyor belt 40 is connected in a continuous loop with one end wrapped around agear 50 and the other wrapped around apulley 52. Thegear 50 has a number ofteeth 54 configured to engage thedisks 42 on theconveyor belt 40, and to drive theconveyor belt 40 during operation. Adrive shaft 56 at the center of thegear 50 is engaged with a hydraulic or other motor (FIG. 1) to rotate thegear 50. A rotatingshaft 58 at the center ofpulley 52 is engaged with bearings to allow thepulley 52 to rotate freely in response to movement of theconveyor belt 40 under the power of thegear 50. The relative positioning of thegear 50 and thepulley 52 retains theconveyor belt 40 in a taut state. - As described briefly above, a portion of the
conveyor belt 40 passes through thehopper 20 under theopening 22. Also, a portion of theconveyor belt 40 passes through the first andsecond arms 32/34 of thecompression tube 30. In the illustrated embodiment, thecompression tube 30 is butted against thehopper 20. It is understood, however, that the relative positioning of thecompression tube 30 with respect to thehopper 20 can be varied without diverging from the spirit of the present invention. - An
air compressor 60 is coupled to theinlets 38 a/38 b/38 c/38 d by a high-pressure air header 62. Afirst valve 64 positioned between theair compressor 60 and theheader 62 can be manipulated to isolate theheader 62 from theair compressor 60. Between theheader 62 and thecompression tube 30, each of theinlets 38 a/38 b/38 c/38 d is fitted with asecond valve 66. Thesecond valves 66 can be manipulated to adjust the flow of air between theheader 62 and therespective inlet 38 a/38 b/38 c/38 d. By selectively adjusting each of thesecond valves 66, the various inlets can have four distinct flow rates, or can be adjusted to have the same flow rate. - The
delivery hose 70 is coupled to theleg 36 of thecompression tube 30. In the illustrated embodiment, thedelivery hose 70 is a four inch, flexible hose configured to direct the fluidizedloose material 12 exiting theleg 36 of thecompression chamber 30 to a deposition site 72 (FIG. 1). Thedelivery hose 70 can be of larger or smaller diameter, and can be connected to theleg 36 directly or with a reducer. Thedelivery hose 70 can be attached to theleg 36 by any suitable manner known in the art. - During operation, the
material conveyance system 10 is transported to a job site, such as by trailing the system on atrailer 14 havingwheels 16. Thehopper 20 is then filled withloose material 12, such as by shovel or front loader, and theair compressor 60 is activated to begin flowing high-pressure air through one or more of theinlets 38 a/38 b/38 c/38 d in thecompression tube 30. Theconveyor belt 40 is then turned on to drive thedisks 42 through thehopper 20 and thecompression tube 30 before returning again to thehopper 20. As best illustrated in FIG. 3, as thecable 44 pulls thedisks 42 past thehopper 20, theloose material 12 in thehopper 20 passes through theopening 22 to be trapped between a pair ofadjacent disks 42. As thedisks 42 continue to move from thehopper 20 to thecompression tube 30, theloose material 12 between a particular pair ofdisks 42first encounters inlet 38 a andleg 36. The high-pressure air entering thecompression tube 30 throughinlet 38 a begins to fluidize theloose material 12 and force it through theleg 36 into thedelivery hose 70. As the pair ofdisks 42 continues along its constant path, it sequentially passescentral inlets central inlets 38b/38 c force the majority of theloose material 12 out theleg 36 and down thedelivery hose 70. Finally, before the pair ofdisks 42 passes theleg 36, afinal inlet 38 d forces substantially all of the remainingloose material 12 through theleg 36 and into thedelivery hose 70. - After the pair of
disks 42 has passed theleg 36, a residual amount of pressurized air remains between the disks. This residual pressurized air passes throughtubing 26 and intohopper 20 to fluff theloose material 12, as discussed briefly above. - In the illustrated embodiment, a
trough 18 extends around the remaining portion of theconveyor belt 40 to return any remainingloose material 12 not expressed through thedelivery hose 70 back tohopper 20 for recycling. - Because the
compression tube 30 is made from rigid material, the engagement between theconveyor belt 40 and thecompression tube 30 can be designed such that no air escapes from thesystem 10 other than through thedelivery hose 70. Consequently, thesystem 10 can be highly efficient, while not requiring any adjustment as necessary in the prior art. Once thedisks 42 wear down to a point where they can no longer retain a sufficient seal, theconveyor belt 40 can be removed from thegear 50 andpulley 52, and can be quickly and easily replaced with a new conveyor belt. Because the new conveyor belt hasdisks 42 of a known size to correspond with the fixed size of thecompression tube 30, the user can be assured that the new disks will create the proper seal when passing through the compression tube, again without the need for adjustment. - FIGS.4-6 illustrate a
material conveyance system 110 according to another embodiment of the present invention. Thematerial conveyance system 110 is in many ways the same as thematerial conveyance system 10 described above, except for the distinctions discussed below. Consequently, any details not conflicting with the description of the above embodiment, as well as any omissions, can be assumed to be the same as that described above. - In this particular embodiment, a
hopper 120 is positioned at an extreme end of atrailer 114 opposite a hook-up 118 for connection to a towing vehicle (not shown). Accordingly, thehopper 120 can be filled and thematerial conveyance system 110 operated without removing thetrailer 114 from the tow vehicle. - As illustrated in FIG. 4, the
material conveyance system 110 is configured for traveling or long-term storage. As illustrated in FIG. 6, thematerial conveyance system 110 is configured for operation. When traveling, thehopper 120 is raised above the ground to minimize obstructions to travel. - During operation, a
frame 123, to which ahopper 120 is attached, pivots with respect to atrailer 114 until thehopper 120 and/or theframe 123 contacts the ground. - The operating parts of the
material conveyance system 110 are attached to theframe 123 to pivot therewith about ahinge 125 between the traveling position and the operating position. As best illustrated in FIG. 6, agear 150 and adrive shaft 156 are attached by a pair of opposingframe members 127 to theframe 123. Similarly, apulley 152 and arotating shaft 158 are attached by a pair ofstructural members 129 to theframe 123. Thecompression tube 130 is similarly fixed to theframe 123. - In the traveling configuration illustrated in FIG. 4, the
hopper 120 and other functioning elements of thematerial conveyance system 110 are rotated forward onto thetrailer 114 so as not to obstruct the trailer's ability to travel. When configured in the operating position, on the other hand, as illustrated in FIG. 6, the functioning portions of thematerial conveyance system 110 are rotated upward and/or backward, away from thetrailer 114 to position thehopper 120 in a more convenient position for being filled. In this position, adelivery hose 170 can be coupled to thecompression tube 130, and thematerial conveyance system 110 can be operated substantially the same as described above to deliver loose material to a deposition site. - Similar to that described above, an opening122 (FIG. 5) in the base of the
hopper 120 passes between thehopper 120 and an extension of thecompression tube 130 to allow loose material to pass from thehopper 120 to the conveyer belt 140 and, in turn, to thecompression tube 130. - Because each of the above embodiments is specifically designed to operate with high-pressure air, i.e., air at pressures greater than 40 psi, the systems can deliver loose materials to locations significantly further than any material conveyance systems of the prior art. In addition, because of the energy generated in the combustion tube of the present invention, the loose material can be delivered at a velocity high enough to deposit the materials with force. As a result, when used for erosion control purposes, for example, the system compresses soil or soil mixtures against a hillside. Therefore, deposition of soil mixtures for erosion control purposes using the present invention may eliminate the step of compacting the soil with a shovel or similar means. Still further, the high pressure and high energy of the present invention allows loose material to be delivered to a location more than 1,000 feet from the hopper. This distance is substantially greater than any known system of the prior art.
- This system can deliver loose materials through steep, rough and uneven terrain, and can therefore be used in substantially any situation.
- The material conveyance systems discussed above can be used to deliver materials to a work site, such as for erosion control as discussed above, or can be used to deliver materials from a particular site, such as removal of excavation materials, or delivery of grains or other commodities from a silo to a truck.
- From the foregoing it will be appreciated that, although specific embodiments of the invention have been described herein for purposes of illustration, various modifications may be made without deviating from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims.
Claims (27)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/782,903 US6425714B1 (en) | 2001-02-13 | 2001-02-13 | System and method for conveying loose material |
PCT/US2002/004747 WO2002064466A1 (en) | 2001-02-13 | 2002-02-13 | System and method for conveying loose material |
US10/153,471 US6491480B2 (en) | 2001-02-13 | 2002-05-21 | System and method for conveying loose material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/782,903 US6425714B1 (en) | 2001-02-13 | 2001-02-13 | System and method for conveying loose material |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/153,471 Division US6491480B2 (en) | 2001-02-13 | 2002-05-21 | System and method for conveying loose material |
Publications (2)
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US6425714B1 US6425714B1 (en) | 2002-07-30 |
US20020110427A1 true US20020110427A1 (en) | 2002-08-15 |
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US10/153,471 Expired - Fee Related US6491480B2 (en) | 2001-02-13 | 2002-05-21 | System and method for conveying loose material |
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US10/153,471 Expired - Fee Related US6491480B2 (en) | 2001-02-13 | 2002-05-21 | System and method for conveying loose material |
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US (2) | US6425714B1 (en) |
WO (1) | WO2002064466A1 (en) |
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US20080066911A1 (en) * | 2006-09-15 | 2008-03-20 | Rajesh Luharuka | Oilfield material delivery mechanism |
FR2912735A1 (en) * | 2007-02-21 | 2008-08-22 | Dussau Distrib Soc Par Actions | Pneumatic transporter for delivering e.g. cement, has control unit controlling movement of transport chain in normal displacement direction during determined duration given by temporization unit at end of temporization period |
US20140056653A1 (en) * | 2012-08-22 | 2014-02-27 | Christopher Scully | Method and Machine for Filling 3D Cavities with Bulk Material |
US9133701B2 (en) | 2009-03-31 | 2015-09-15 | Schlumberger Technology Corporation | Apparatus and method for oilfield material delivery |
US11266085B2 (en) | 2017-11-14 | 2022-03-08 | Ecovative Design Llc | Increased homogeneity of mycological biopolymer grown into void space |
US11277979B2 (en) | 2013-07-31 | 2022-03-22 | Ecovative Design Llc | Mycological biopolymers grown in void space tooling |
US11293005B2 (en) | 2018-05-07 | 2022-04-05 | Ecovative Design Llc | Process for making mineralized mycelium scaffolding and product made thereby |
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US11359074B2 (en) | 2017-03-31 | 2022-06-14 | Ecovative Design Llc | Solution based post-processing methods for mycological biopolymer material and mycological product made thereby |
US11420366B2 (en) | 2013-10-14 | 2022-08-23 | Ecovative Design Llc | Method of manufacturing a stiff engineered composite |
US11505779B2 (en) | 2016-03-01 | 2022-11-22 | The Fynder Group, Inc. | Filamentous fungal biomats, methods of their production and methods of their use |
US11920126B2 (en) | 2018-03-28 | 2024-03-05 | Ecovative Design Llc | Bio-manufacturing process |
US11932584B2 (en) | 2006-12-15 | 2024-03-19 | Ecovative Design Llc | Method of forming a mycological product |
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Cited By (17)
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US8844615B2 (en) * | 2006-09-15 | 2014-09-30 | Schlumberger Technology Corporation | Oilfield material delivery mechanism |
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US9133701B2 (en) | 2009-03-31 | 2015-09-15 | Schlumberger Technology Corporation | Apparatus and method for oilfield material delivery |
US20140056653A1 (en) * | 2012-08-22 | 2014-02-27 | Christopher Scully | Method and Machine for Filling 3D Cavities with Bulk Material |
US11277979B2 (en) | 2013-07-31 | 2022-03-22 | Ecovative Design Llc | Mycological biopolymers grown in void space tooling |
US11420366B2 (en) | 2013-10-14 | 2022-08-23 | Ecovative Design Llc | Method of manufacturing a stiff engineered composite |
US11505779B2 (en) | 2016-03-01 | 2022-11-22 | The Fynder Group, Inc. | Filamentous fungal biomats, methods of their production and methods of their use |
US11359074B2 (en) | 2017-03-31 | 2022-06-14 | Ecovative Design Llc | Solution based post-processing methods for mycological biopolymer material and mycological product made thereby |
US11266085B2 (en) | 2017-11-14 | 2022-03-08 | Ecovative Design Llc | Increased homogeneity of mycological biopolymer grown into void space |
US11920126B2 (en) | 2018-03-28 | 2024-03-05 | Ecovative Design Llc | Bio-manufacturing process |
US11293005B2 (en) | 2018-05-07 | 2022-04-05 | Ecovative Design Llc | Process for making mineralized mycelium scaffolding and product made thereby |
US11343979B2 (en) | 2018-05-24 | 2022-05-31 | Ecovative Design Llc | Process and apparatus for producing mycelium biomaterial |
US11359174B2 (en) | 2018-10-02 | 2022-06-14 | Ecovative Design Llc | Bioreactor paradigm for the production of secondary extra-particle hyphal matrices |
Also Published As
Publication number | Publication date |
---|---|
US6491480B2 (en) | 2002-12-10 |
US6425714B1 (en) | 2002-07-30 |
US20020131828A1 (en) | 2002-09-19 |
WO2002064466A1 (en) | 2002-08-22 |
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