Spinner for a particulate material spreader

Abstract

An apparatus for broadcasting particulate or granular material over a ground surface involves a variable speed spinner and a material conveyor. The spinner is positioned generally horizontally below a discharge end of a material conveyor. The spinner has a disk having a generally radially disposed fin fixed to an upper side of the disk and radiating outwardly from a center of the disk. The spinner is positioned to receive material from the material conveyor at a location about half way along a length of the fin. In a method broadcasting particulate or granular material over a ground surface, the spinner is preferably rotated at a speed of 900-1000 rpm. The apparatus and method provide for distribution of material over greater distances and can do so without pulverizing the material, creating a uniform pattern of distribution over a 50% wider swath.

Claims

1. An apparatus for broadcasting particulate or granular material over a ground surface, the apparatus comprising: a pair of variable-speed spinners and a material conveyor, the pair of variable-speed spinners being positioned below a discharge end of the material conveyor, wherein each of said pair of variable-speed spinners comprises a dish-shaped disk having a center that is below a horizontal plane defined by a periphery of the dish-shaped disk, a plurality of interchangeable radially-disposed fins positioned on an upper side of each dish-shaped disk and radiating outwardly from a center of the dish-shaped disk with an adjustable angle relative to a radial of the dish-shaped disk, each of the fins having a top edge portion that is angled relative to a portion of the fin that is attached to the dish-shaped disk, at least a portion of the fin extending beyond a periphery of the dish-shaped disk; and an adjustable flow divider between the material conveyor and the spinner for directing and adjusting a flow of the material from the material conveyor onto the pair of variable-speed spinners, wherein each of the pair of variable-speed spinners is able to spin at a variable rotational speed and is positioned to receive material from the flow divider at a selected location about half way along a length of the fins such that the material is caught by portions of the fins traveling at a speed of about 60 to 70 feet per second and is accelerated to a velocity of about 110 to 157 feet per second at an end of the fins' radial length.

2. The apparatus according to claim 1, wherein each of the fins comprises a distal end that extends radially beyond a periphery of the dish-shaped disk.

3. The apparatus according to claim 1, wherein each of the fins comprises a proximal end that is approximately flush with a center shaft of the dish-shaped disk.

4. The apparatus according to claim 1, wherein each of the fins is fixed in an upwardly projecting position that is generally perpendicular to a top surface of the dish-shaped disk.

5. The apparatus according to claim 1, wherein the selected location for depositing the material on each of the pair of rotating variable-speed spinners is about 7 inches to about 9 inches radially from the center of the dish-shaped disk.

6. An apparatus for broadcasting particulate or granular material over a ground surface, the apparatus comprising: one or more variable-speed spinners configured to be positioned generally horizontally below a discharge end of a material conveyor, wherein each of the one or more spinners comprises a dish-shaped disk having a diameter of about 24 inches to about 36 inches and having one or more generally radially-disposed fins fixed to an upper side of the dish-shaped disk and radiating outwardly from a center of the dish-shaped disk, wherein at least one of said one or more generally radially-disposed fins has an adjustable angle relative to a radial of the dish-shaped disk; and an adjustable flow divider configured to be positioned between the material conveyor and the one or more variable-speed spinners for directing and adjusting a flow of the material from the material conveyor onto the one or more variable-speed spinners at a selected location that is about 7 inches to about 9 inches radially from the center of the dish-shaped disk.

7. The apparatus according to claim 6, wherein each of the one or more fins comprises a distal end that extends radially beyond a periphery of the dish-shaped disk.

8. The apparatus according to claim 6, wherein each of the one or more fins comprises a proximal end that is approximately flush with a center shaft of the dish-shaped disk.

9. The apparatus according to claim 6, wherein each of the one or more fins has a length of about 7 inches to about 17 inches.

10. The apparatus according to claim 6, wherein each of the one or more fins is fixed in an upwardly projecting position that is generally perpendicular to a top surface of the dish-shaped disk.

11. The apparatus according to claim 6, further comprising a variably controllable motor for controlling a rate of rotation of the one or more variable-speed spinners.

12. The apparatus according to claim 6, wherein the one or more variable-speed spinners comprises two variable-speed spinners disposed adjacent to each other and configured to be positioned below the discharge end of the material conveyor.

13. The apparatus according to claim 6, wherein the material deposited on the spinners at the selected location is caught by a portion of the fins traveling at a speed of 60 to 70 feet per second.

14. The apparatus according to claim 12, wherein the material accelerates along a length of the fin to a distal end of the fin to achieve a velocity of 110 to 157 feet per second.

15. The apparatus according to claim 6, wherein a length of the fin is from about 14 inches to about 18 inches.

16. The apparatus according to claim 6, wherein each of the one or more fins has a top edge portion that is angled relative to a portion of the fin that is attached to the dish-shaped disk.

17. The apparatus according to claim 6, wherein each of the one or more fins has an adjustable angle relative to a radial of the dish-shaped disk.

18. A method of broadcasting particulate or granular material over a ground surface, the method comprising: conveying a material to a rotating variable-speed spinner via an adjustable flow divider, the variable-speed spinner comprising a dish-shaped disk having a generally radially-disposed fin on an upper side of the dish-shaped disk and radiating outwardly from a center of the dish-shaped disk, wherein the adjustable flow divider is configured to direct and adjust a flow of the material from a material conveyor onto the rotating variable-speed spinner, and wherein the generally radially-disposed fin has an adjustable angle relative to a radial of the dish-shaped disk; depositing the material on the rotating variable-speed spinner at a selected location that is about half way along a length of the fin, wherein the material deposited on the rotating variable-speed spinner at the selected location is caught by a portion of the fin traveling at a speed of 60 to 70 feet per second; and accelerating the material along the length of the fin to a distal end of the fin to achieve a velocity of 110 to 157 feet per second.

19. The method according to claim 18, wherein the selected location for depositing the material on the rotating variable-speed spinner is about 7 inches to about 9 inches radially from the center of the dish-shaped disk.

20. The method according to claim 18, wherein the rotating variable-speed spinner is rotated at a speed of 900-1000 rpm.

21. The method according to claim 18, wherein the distal end of the fin extends radially beyond a periphery of the dish-shaped disk, and wherein the fin further comprises a proximal end that is approximately flush with a center shaft of the dish-shaped disk, and wherein the fin is fixed in an upwardly projecting position that is generally perpendicular to a top surface of the dish-shaped disk.

22. The method according to claim 18, wherein the length of the fin is from about 14 inches to about 18 inches.

23. The method according to claim 18, wherein the rotating variable-speed spinner is adjacent a second rotating variable-speed spinner having a second dish-shaped disk, and wherein each of the dish-shaped disk and the second dish-shaped disk comprises a plurality of generally radially-disposed fins fixed to its upper side and radiating outwardly from its center.

24. The method according to claim 18, wherein the fin has a top edge portion that is angled relative to a portion of the fin that is attached to the dish-shaped disk.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) For clearer understanding, preferred embodiments will now be described in detail by way of example, with reference to the accompanying drawings. The components of the drawings are not necessarily to scale, emphasis instead being placed on clearly illustrating the principles of the present invention. Moreover, in the drawings, like reference numerals do not need corresponding parts throughout the several views.

(2) FIG. 1 is a perspective view of an exemplary embodiment of a spreader system of the present disclosure, taken from the rear of the system.

(3) FIG. 2 is a rear elevational view of the system of FIG. 1.

(4) FIG. 3 is a right side elevational view of the system illustrated in FIG. 1.

(5) FIG. 4 is a top plan view of the system of FIG. 1.

(6) FIG. 5 is a sectional perspective view of the spreader system illustrated in FIGS. 1-4.

(7) FIG. 6 is a top plan view of an exemplary pair of spinners of an embodiment of a spreader system of the present disclosure.

DETAILED DESCRIPTION

(8) Referring more specifically to the drawings in which like reference numerals refer to like elements throughout the several views, an exemplary non-limiting embodiment of a spreader system of the present disclosure is illustrated in FIGS. 1-6. An embodiment of a spreader system is illustrated for broadcasting particulate or granular material over a ground surface. In the figures the spreader system includes one or more spinners 10. Each spinner can be operated by a drive motor 10a. The drive motor can be a variable speed motor allowing for adjustment of the rate of operation of the its associated spinner 10 for distribution or broadcast of particulate material ingredients.

(9) As illustrated, spinners 10 are in the form of disks 10b positioned below and off the end of take away conveyor 6. The disks can be, but need not be, positioned substantially horizontally with respect to the conveyor 6. The disks 10b may be flat or, preferably, concave. Each disk 10b is mounted on a generally vertically disposed shaft 10c with the disk 10b positioned generally parallel to the surface on which the material ingredients are to be distributed. Disks 10b are designed for rotation about shafts 10c. Drive motors 10a are operably connected to shafts 10c for controlling the rate of rotation of spinners 10 and thereby the rate of distribution of material ingredients from spinners 10 over a ground surface below.

(10) Each disk 10b can include one or more fins 10d to assist in distributing material ingredients from spinners 10. The one or more fins 10d can be fixed to the top or upper side of the disk 10b. In various aspects, the one or more fins 10d can be fixed in an upwardly projecting or upright position. For example the one or more fins 10d can be positioned generally perpendicular to the top surface of the disk 10b. The one or more fins need not be positioned exactly perpendicular, i.e. at an angle of 90 to the top surface of the disk. An exemplary embodiment of a pair of spinners is depicted in FIG. 6. As illustrated in FIG. 6, their orientation can be positioned outwardly from the center to the outer diameter, advanced forward 17 or retarded back 17 in relation to a line perpendicular to the top surface of the disk, or anywhere in between, to provide additional versatility in pattern control. The disks 10b can be generally circular in shape and can have a diameter of about 24 to about 36. The one or more fins 10d can be radially positioned on the top of the disk 10a so the fins extend radially outwardly from the center of the disk 10b. At least one of the fins 10d radiates outwardly from the center of the disk 10b beyond the periphery of the disk. In one or more aspects the at least one fin can have a length of about 7 to about 17.

(11) In one or more embodiments, the aforementioned spreader system can be incorporated with a material bin system. The bin system can include a particulate material ingredient hopper 7. In one or more aspects, the bin system can include one or more additional hoppers as depicted for example in U.S. Pat. No. 7,380,733, which is incorporated by reference as if fully set forth herein. The additional hopper(s) can be and one or more secondary material ingredient hopper(s). For example, two secondary particulate material ingredient hoppers can be provided. The secondary material ingredient hoppers can be positioned rearwardly of hopper 7. Hopper 7 can be a primary particulate material ingredient hopper. The one or more hopper(s) can be supported by a frame 14 including support rails 15. Each hopper can have generally converging walls leading to a discharge port, allowing for gravitational feed and discharge of particulate material ingredients contained within each respective hopper. The hopper(s) can be generally designed for holding and discharging dry, bulk granular materials such as but not limited to fertilizer, fertilizer supplements, herbicides, insecticides, fungicides, soil pH adjusting materials, micronutrients, and the like. The hopper(s) can be fixed to rails 15 or can be selectively removable.

(12) A controllable metering system can be provided for any one or all hoppers provided. In a non-limiting example, the hopper 7 includes a transition box 4 into which its particular material flows. The material from the transition box 4 is discharged to take away conveyor 6, such as a bed chain conveyor or chain mesh conveyor that directs the particulate material to rear roller 1. Rear roller 1 can serve to deliver the material ingredients to the spreader system including the one or more spinners 10 that serve to distribute or broadcast the particulate material over a ground surface, such as an agricultural field, food plots within wooded areas, turf and golf course applications and vineyards.

(13) Rear roller 1 can be operated by a gear case and one or more hydraulic motors 1a. Rear roller 1 can serve to drive the take away conveyor 6. Thus, adjusting the speed of rotation of roller 1 by hydraulic motor 1a can serve to control the speed of the take away conveyor 6. In other aspects a plurality of take away conveyors can be provided, for example one for each hopper, when multiple hoppers are provided.

(14) FIG. 3 is a right side view of the system of FIGS. 1 and 2. This figure illustrates a side elevational view of hopper 7. In one or more aspects primary material ingredient hopper 7 can include a metering device comprising a gate (as shown in U.S. Pat. No. 7,380,733) for controlling the rate of discharge of particulate material therefrom. The gate may be lowered to a near closed position for minimal discharge of material from hopper 7, or alternatively may be fully opened, or positioned somewhere between fully opened and fully closed. In an exemplary embodiment the gate can be positioned by manual settings. The position of gate along with the speed of take away conveyor 6 affects the rate of discharge of material from hopper 7. Rail extensions 12 can be provided to facilitate the spinner motors 10a being mounted farther apart due to the longer fins and larger spinner system diameters.

(15) FIG. 2 illustrates a rear elevational view of the spreader system. Material discharged from the hopper 7 onto conveyor 6 is fed to rear roller 1. Spinners 10 can be fixed in position in relation to rear roller 1. Flow divider 13 can be positioned between rear roller 1 and spinners 10. The flow divider 13 serves to receive material from conveyor 6 and roller 1 and to direct the flow of the particulate material onto spinners 10. In an aspect where two spinners are provided as illustrated, flow divider 13 directs the material off of each of its sides to each of the spinners. Of course if only spinner is provided flow divider 13 may not be desired. The spreader system can also include a protective frame 17 fixed to the rear of the frame 14 of the bin system and positioned about the spreader system to protect the spreader system. The protective frame 17 can include a pan 18 positioned underneath the spinners 10 to collect overflow material not collected by the pinners 10.

(16) In one or more other aspects, one or more secondary material ingredient hoppers can be positioned rearwardly of a primary ingredient hopper 7. Their converging walls can lead to transition box 4 that can include metering rollers. Take away conveyor 6 can be positioned below hopper 7 for receiving materials discharged from the hopper, for example through the gate. In an exemplary embodiment conveyor 6 extends longitudinally underneath hopper 7 and beyond its gate to the rear of the frame 14. Metering rollers can be positioned longitudinally along the frame 14, rearward of the gate for hopper 7 and above conveyor 6. Thus, material discharged by the metering rollers from the one or more material ingredient hoppers can be received by conveyor 6. When material ingredients have been discharged from hopper 7 onto conveyor 6, ingredients discharged from the one or more secondary material ingredient hoppers can be discharged on top of the primary ingredients from hopper 7 onto the same conveyor 6, as described and illustrated in U.S. Pat. No. 7,380,733. Conveyor 6 can direct the particulate material to rear roller 1.

(17) Accompanying the systems typically would be either a simplified full hydraulic control system or an electronic control system, either of which is available from numerous sources. These systems are intended to control and adjust the discharge rate of the material from the one or more hoppers. The systems can optionally control parameters of the metering device and spinner rotational speed to achieve a desired spread pattern according to the density of material being spread and the material discharge rate. These controls control drive motor 1a for roller 1 that drives take away conveyor 6 and discharges materials to the one or more spinners 10, and in some cases may also control drive motor(s) 10a that serve to rotate spinner(s) 10. Additionally, these controls can control drive motors that control the rate of rotation of metering rollers of any one or more material ingredient hoppers provided. Thus, it can be seen the controller can control the rate of discharge of ingredients from any one or more secondary material ingredient hoppers and thus the ratio of the mixture of ingredients from secondary hoppers. Further, by controlling the rate of discharge of ingredients from secondary material ingredient hoppers, the ratio of secondary ingredients to the amount of primary ingredients discharged from hopper 7 can be controlled. By controlling the rate of rotation of rear roller 1, the rate of rotation of metering rollers, and/or the position of the gate on primary hopper 7, the overall rate of discharge of ingredients from all hoppers and the rate of broadcast of these ingredients onto a ground surface can be controlled.

(18) Electronic controls are available for controlling the system and can be supplied by many suppliers of computerized rate controllers, provided by companies such as Trimble, Ag-Chem Equipment Co., Inc., Mid-Tech, Raven Industries, or Micro-Track. Exemplary controls include the control systems disclosed in U.S. Pat. No. RE 35,100, U.S. Pat. Nos. 6,198,986, 6,089,743, Hydraulic controls are also available, such as disclosed in US 2011/0303312. Each of the foregoing references is incorporated by reference as if fully set forth herein.

(19) It can be seen from the above description that systems are provided that allow the operator, with the aid of any one of numerous control systems, to spread one or more material ingredients at independently varying or fixed rates. Farmers or commercial applicators may apply, for example, three material ingredients, such as N, P, K. (nitrogen, phosphorous and potassium), or at times two of these three and the third ingredient being one or more micronutrients such as trace elements (for example, boron, magnesium and/or sulfur), or a pH adjustment ingredient, such as lime. Further, the controls allow for different rates of discharging and broadcasting material ingredients at different rates at different locations on the field.

(20) The pattern of the particulate material broadcast from spinners 10 can be fine tuned or adjusted by adjusting one or more of the rate of rotation of the spinners 10, the position of the flow divider 13 that diverts a portion of the discharge of ingredients to one spinner and another portion to the other spinner, and the position of the fins 10d on the spinners 10.

(21) Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context dictates otherwise, between the upper and lower limit of that range and any other stated or intervening value in that stated range, is encompassed within the disclosure. The upper and lower limits of these smaller ranges may independently be included in the smaller ranges and are also encompassed within the disclosure, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both are also included in the disclosure.

(22) Ratios, geometric units (such as but not limited to a length, radius or diameter), amounts, and other numerical data may be expressed in a range format. It is to be understood that such a range format is used for convenience and brevity, and should be interpreted in a flexible manner to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-range encompassed within that range as if each numerical value and sub-range is explicitly recited. To illustrate, a ratio of one length to another length of about 0.1% to about 5% should be interpreted to include not only the explicitly recited ratio of about 0.1% to about 5%, but also include individual ratios (e.g., 1%, 2%, 3%, and 4%) and the sub-ranges (e.g., 0.5%, 1.1%, 2.2%, 3.3%, and 4.4%) within the indicated range. In an embodiment, the term about can include traditional rounding according to significant figure of the numerical value. In addition, the phrase about x to y includes about x to about y.

(23) Unless defined otherwise, all technical and scientific terms used have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although any methods and materials similar or equivalent to those described can also be used in the practice or testing of the present disclosure, the preferred methods and materials are now described.

(24) All publications and patents cited in this specification are incorporated by reference as if each individual publication or patent were specifically and individually indicated to be incorporated by reference as if fully set forth herein and are incorporated by reference to disclose and describe the methods and/or materials in connection with which the publications are cited. The citation of any publication is for its disclosure prior to the filing date and should not be construed as an admission that the present disclosure is not entitled to antedate such publication by prior disclosure. Further, the dates of publication provided could differ from the actual publication dates that may need to be independently confirmed.

(25) The afore-described systems are but exemplary embodiments of the present disclosure. Other embodiments may include as few as one hopper or more than three hoppers for discharging their respective material ingredients onto one or more take away conveyors 6. Additionally, metering rollers can be provided for controlling discharge material ingredients from any one or more secondary hoppers. Alternatively, each secondary hopper can have its own individual metering box and/or roller. One or more spinners 10 can be provided.

(26) It should be emphasized that the above-described embodiments of the systems, particularly any preferred embodiments are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the invention. One skilled in the art will readily recognize that many variations and modifications may be made to the above-described embodiment(s) without departing substantially from the spirit and principles of the invention. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claim(s).

(27) The novel features will become apparent to those of skill in the art upon examination of the description. It should be understood, however, that the scope of the claims should not be limited by the embodiments, but should be given the broadest interpretation consistent with the wording of the claims and the specification as a whole.