The present disclosure relates to a system and method for transferring material, and, more particularly, to a system and method for removing bulk solid biomass fuels from a storage container.
A large number of households, as well as businesses, utilize biomass heating fuel for their heating needs, rather than relying on heating oil, propane and/or electricity. Wood pellets, a type of biomass fuel, are generally made from compacted sawdust and produced as a byproduct of sawmilling and other wood transformation activities. The use of wood pellets as an alternative source of heating fuel has many benefits. Not only are wood pellets a clean, environmentally friendly, natural, and renewable fuel resource, but one ton of wood pellets has the heat value of about one and a half cords of wood and stacks easily in one third the space, making it possible to easily store fuel for an entire season. Pellet fired boilers require facilities for pellet storage, just as oil burners require oil tanks. Because the cost of wood pellets may be more expensive if purchased in small quantities, it is cost effective to purchase pellets more cheaply in larger quantities, and storing pellets in bulk storage systems in a household or business.
Features and advantages of the claimed subject matter will be apparent from the following detailed description of embodiments consistent therewith, which description should be considered with reference to the accompanying drawings, wherein:
The subject matter of the present disclosure may involve, in some cases, interrelated products, alternative solutions to a particular problem, and/or a plurality of different uses of a single system or article.
Aspects of the present disclosure relate to a self filling pellet hod configured for moving bulk, i.e., loose, pelletized and/or granularized fuels from a storage bin, which may be remote from an appliance, to an appliance. The fuel may include, but is not limited to, any pelletized and/or granularized solid fuel such as, but coal (e.g., anthracite coal) and biomass fuel. As used herein, biomass fuel is intended to refer to solid animal matter and/or solid fuel plant (such as, but not limited to, numerous types of plants including miscanthus, switchgrass, hemp, corn, poplar, willow, sorghum, sugarcane, a variety of tree species, and/or torrefied biomass fuel, e.g., e-coal or eco-coal) that can be combusted as fuel. The term biomass fuel is not intended to refer to fossil fuels which have been transformed by geological processes into substances, such as coal, petroleum or natural gas. Although fossil fuels have their origin in ancient biomass, they are not considered biomass fuel as used herein and by the generally accepted definition because they contain carbon that has been “out” of the carbon cycle for a very long time. Bulk as used herein may refer to a quantity loose of fuel that is not associated with a fixed size, e.g., forty pound bag. In other words, the material may be loose and not in bags. Although, in the exemplary embodiments described below, reference is made to biomass fuel (e.g., wood pellets, the systems and method may be used with any bulk solid biomass fuel.
Biomass heating fuel (e.g., wood pellets) may be purchased in fixed size bags, e.g., by weight or volume, or in bulk, i.e., loose. Bags may provide a convenient method for storing and/or manually moving a quantity of biomass heating fuel. Bags may generally be sized so that the contents of at least one bag may fit into a fuel reservoir of a biomass appliance, e.g., a pellet stove. Such bag sizing may provide convenience in that partial bags need not be accommodated. Standard bags are generally sized to contain about forty pounds of biomass heating fuel. However, forty pounds may be too heavy for some people to lift and/or carry.
A further disadvantage of bags is waste from packaging (i.e., the bags themselves). Providing bulk biomass heating fuels may eliminate such packaging waste. However, eliminating the bags may also eliminate a convenient way of transferring the biomass fuel from, e.g., a storage container to the appliance. It may therefore be desirable to provide a way to remove an adjustable quantity of biomass fuel from the storage container for transfer to the heating appliance.
The present disclosure relates to a system and method for transferring bulk solid biomass fuel from a storage container, the system comprising a bin defining a cavity sized and shaped for receiving a quantity of bulk solid biomass fuel, a trolley configured to engage and travel along a track configured to be generally horizontally mounted to a portion of the bin, a hose coupled to the trolley, at least a portion of the hose configured to be in motion with the trolley, a vacuum source coupled to the hose, and a means of driving the trolley along the track. It should be noted that in some embodiments, a trolley may not be necessary in order to transfer the bulk solid biomass fuel, particularly when transferring biomass fuel from a relatively small storage container. The present disclosure may also further comprise conveying the bulk solid biomass fuel through the hose and discharging the bulk solid biomass fuel to a desired receptacle, which may include a heating appliance, such as a wood pellet stove.
The present disclosure may eliminate the need to carry individual forty-pound bags of biomass heating fuel, or other material, to a desired appliance/receptacle, such as a wood pellet stove. The present disclosure may also eliminate any packaging waste resulting from the continual use of bagged biomass heating fuels. The present disclosure may provide a means of transferring an adjustable quantity of bulk solid biomass fuel from a storage container to a heating appliance.
The hose body 126 may define a first end 128 and a second end 130, wherein the first end 128 may be configured to be in fluid communication with second end 130. At least a portion of the first end 128 of the hose 124 may be coupled to a discharge port 138 defined on the bin 102. The system 100 may also include a driving mechanism 132 configured to drive the trolley 120 along the track 122.
In one embodiment, the driving mechanism 132 may be coupled to and powered by a motor 134. The motor 134 may be electric, non-electric, hydraulic, actuator, magnetic, pneumatic, or combinations thereof. In one embodiment, the track 122 may be coupled to and driven by the drive mechanism 132, wherein the track 122 may be configured to engage and drive the trolley 120 along the path (shown in
The track 122 and trolley 120 may be configured to operate with one another in any manner generally known to one skilled in the art. For example, the track 122 may include spaced flanges (not shown) defining a track slot (not shown), wherein the trolley 120 may include radial wheels mounted in laterally spaced tandem pairs on a trolley body for rotation about parallel horizontal axes, wherein the wheels may be rollingly engaging the track flanges. The trolley 120 may also include guide rollers positioned in the track slot and may guide the trolley 120 along the track 122. In other embodiments, the trolley 120 may include slide discs, canted rotatable wheels, wheels rotatable about vertical axes, spherical ball arrangements, radial wheel arrangements, or combinations thereof.
The system 100 of
The system 100 of
The bin 102 may contain a variable quantity of bulk solid biomass heating fuel 142. For example, early in a heating season or immediately following a delivery of biomass heating fuel, the bin may be relatively full. As the bulk solid biomass fuel is consumed, a relatively smaller quantity may remain in the bin 102. During operation, the end effector 136 may be dragged along the biomass material 132 by the hose 124. The end effector 136 may collect bulk solid biomass fuel 142 (e.g., wood pellets) that may then be conveyed from the bin 102 to the receptacle 140. The end effector 136 may be configured to collect bulk solid biomass fuel 142 within a volume based, at least in part, on a shape of the end effector. As the trolley 120 moves along the track 122, the end effector 136 may be dragged along a second path (not shown) that depends, at least in part, on the path (shown in
The system 100 may be configured such that the end effector 136 and at least a portion of the hose 124 may be “buried” during a delivery of bulk solid biomass fuel 142. In one embodiment, the system 100 may be configured to allow the end effector 136 to begin to collect bulk solid biomass fuel 142 while buried. In another embodiment, the system 100 may be configured to allow the end effector 136 to collect bulk solid biomass fuel 142 while positioned on a surface of the bulk solid biomass fuel 142 (shown in FIGS. 4 and 6-7). The end effector 136 may be configured to collect substantially all of the remaining bulk solid biomass fuel 142 when the bin 102 is nearly empty, i.e., may be configured to substantially clean the floor 108 of the bin 102.
In another embodiment, the end effector may include a feature, e.g. a tail (not shown), that provides a steering function to control the motion of the end effector. For example, the tail may be configured to steer the end effector based on a position of the end effector relative to the bulk solid biomass fuel 142. In another example, the tail may be configured to steer the end effector based on a position of the end effector relative to a direction of motion of a trolley 120. In this manner, the end-effector may more effectively cover a volume and/or area of the bin 102.
When pneumatically conveying solid material, such as bulk solid biomass fuel 142, it may be desirable to provide a pulsed flow of solids and/or air, which may increase a distance that the solids may be conveyed. The term “pulsed flow” may be understood as a periodic flow with an associated duty cycle. For example, a combination of air and solids may flow for a first portion of a cycle and substantially all air may flow for a second portion of the cycle. It may further be desirable to allow for reversing of flow in order to purge a hose containing solids.
In one embodiment, the system may be configured to provide a pulsed flow of bulk solid biomass fuel 142 and/or air. For example, while the end effector is in motion, i.e., while the end effector is being pulled by the hose and/or trolley, and the vacuum source is activated, the end-effector may collect bulk solid biomass fuel 142. The bulk solid biomass fuel 142 may then be pneumatically conveyed through the hose to an appropriate receptacle. Continuing with this example, if the trolley is paused on its path, the end effector may also substantially stop moving. The end effector may be configured to create a “pocket” within the bulk solid biomass fuel 142 (i.e., a volume of air without bulk solid biomass fuel 142) when it is not moving and when the vacuum source is activated. In this manner, a pulsed flow of bulk solid biomass fuel 142 may be generated. The duty cycle of the pulsed flow may depend on a configuration of the end effector and/or relative paused and in motion time intervals of the trolley and/or end-effector.
In one embodiment, the inner hose 146 may be configured to provide a negative pressure and/or suction at the end effector. The end effector may be configured to direct the bulk solid biomass fuel 142 toward the inner hose 146. The bulk solid biomass fuel 142 and/or air may then flow from the end effector into the inner hose and thereby be transferred through the hose to the receptacle.
The hose body 226 may define a first end 228 and a second end 230, wherein the first end 228 may be configured to be in fluid communication with second end 230. At least a portion of the second end 230 may be coupled to the trolley 220 by a coupling means 256. In one embodiment, the coupling means 256 may comprise a pulling wire. At least a portion of the first end 228 of the hose 224 may be coupled to a discharge port 238 defined on the bin 202. The hose 224 may be comprised of a flexible and durable material. The system 200 may also include a driving mechanism 232 configured to drive the trolley 220 along the track 222.
In one embodiment, the driving mechanism 232 may be coupled to and powered by a motor 234. The motor 234 may be electric, non-electric, hydraulic, actuator, magnetic, pneumatic, or combinations thereof. In one embodiment, the track 222 may be coupled to and driven by the drive mechanism 232, wherein the track 222 may be configured to engage and drive the trolley 220 along the path (shown in
The system 200 of
During operation, the end effector 236 may be dragged along the bulk solid biomass fuel 242 by the coupling means 256, e.g. pulling wire. As the trolley 220 moves along the track 222, the end effector 236 may be dragged along a second path (not shown) that depends, at least in part, on the path (shown in
The system 300 may also include a hose 324 having a body 326 coupled to an S-pipe 358, wherein the S-pipe 358 has a proximal end 360 and a distal end 362. At least a portion of the proximal end 360 may be rotatably coupled to the trolley 320 and at least a portion of the distal end 362 may be coupled to at least a portion of the hose 324. The S-pipe 358 may be configured to rotate about an axis substantially perpendicular to the trolley 320. The shape of the S-pipe 358 may be substantially sigmoid, i.e., S-shaped and the S-pipe 358 may be comprised of a substantially rigid and durable material. In some embodiments, rotary couplings may be coupled to at least one of the ends of the S-pipe.
The hose body 326 may define a first end 328 and a second end 330, wherein the first end 328 may be configured to be in fluid communication with second end 330. At least a portion of the first end 328 of the hose 324 may be coupled to a discharge port 338 defined on the bin 302. The hose 324 may be comprised of a flexible and durable material. The system 300 may also include a driving mechanism 332 configured to drive the trolley 320 along the track 322.
In one embodiment, the driving mechanism 332 may be coupled to and powered by a motor 334. The motor 334 may be electric, non-electric, hydraulic, actuator, magnetic, pneumatic, or combinations thereof. In one embodiment, the track 322 may be coupled to and driven by the drive mechanism 332, wherein the track 322 may be configured to engage and drive the trolley 320 along the path (shown in
The system 300 of
During operation, the end effector 336 may be dragged along the bulk solid biomass fuel 342 by the hose 324. As the trolley 320 moves along the track 322, the end effector 336 may be dragged along a second path (not shown) that depends, at least in part, on the path (shown in
As shown in
As shown in
In one embodiment, as shown in
In one embodiment, the bearings 768 may be horizontally mounted to a portion of an interior surface (shown in
The system 700 of
The system 700 may also include a track and trolley system (shown in FIGS. 4 and 6-7), wherein at least a portion of the hose 724 may be coupled to the trolley, the trolley may be configured to engage and travel along a track defining a path (shown in
In other embodiments, the system 700 of
In one aspect, the present disclosure may feature an apparatus. The apparatus may comprise a hose having a body defining a first end and a second end, the first end configured to be in fluid communication with the second end, and a driving mechanism configured to move the hose in at least one direction.
In another aspect, the present disclosure may feature a transfer system for bulk solid biomass fuel. The system may comprise a bin having an interior cavity sized and shaped for receiving a quantity of biomass, the cavity defining a length, a width, and a height, a trolley configured to engage and travel along a track defining a path, the track configured to be horizontally mountable to a portion of the bin, a hose having a body coupled to the trolley, at least a portion of the hose configured to be in motion with the trolley, the body defining a first end and a second end, the first end configured to be in fluid communication with the second end, and a driving mechanism configured to move the hose in at least one direction.
In yet another aspect, the present disclosure may feature a method of transferring bulk solid biomass fuel. The method may comprise providing a trolley configured to engage and travel along a track defining a path, the track configured to be horizontally mountable, the trolley being coupled to a hose, the hose having a body defining a first end and a second end configured to be in fluid communication with the first end, wherein at least a portion of the hose is configured to be in motion with the trolley and configured to engage and convey a quantity of biomass material, providing a driving mechanism configured to drive the trolley along the track, driving the trolley along the track, and conveying the biomass material through the hose.
While several embodiments of the present disclosure have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the functions and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the present disclosure. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings of the present disclosure is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the disclosure described herein. It is, therefore, to be understood that the foregoing embodiments are presented by way of example only and that, within the scope of the appended claims and equivalents thereto; the disclosure may be practiced otherwise than as specifically described and claimed. The present disclosure is directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.
All definitions, as defined and used herein, should be understood to control over dictionary definitions, definitions in documents incorporated by reference, and/or ordinary meanings of the defined terms.
The indefinite articles “a” and “an,” as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean “at least one.”
The phrase “and/or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Other elements may optionally be present other than the elements specifically identified by the “and/or” clause, whether related or unrelated to those elements specifically identified, unless clearly indicated to the contrary.
All references, patents and patent applications and publications that are cited or referred to in this application are incorporated in their entirety herein by reference.
Additional disclosure in the format of claims is set forth below:
This application claims the benefit of the filing date of co-pending U.S. Provisional Patent Application Ser. No. 61/157,776, filed on Mar. 5, 2009 and entitled SYSTEM FOR REMOVING BULK MATERIALS FROM A STORAGE CONTAINER, the teachings all of which are fully incorporated herein by reference.
Number | Date | Country | |
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61157776 | Mar 2009 | US |