• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    spray head. one agricultural sprayer includes a spray lance equipped with a plurality of spray heads, each head having a defined body a localized cavity in fluid communication with a fluid inlet and an arrangement of four outlets leading to four nozzle, reservoir having different flow rates. . a nozzle selection control member is mounted for rotation in the cavity and includes a fluid passage arrangement for establishing fluid connections between the inlet and different or four nozzle combinations when the control member is rotated between discrete positions previously selected by an electric stepper motor, with this motor being controlled in response to vehicle speed, so that the spray tip capacity decreases to effect a constant application rate when vehicle speed decreases from a maximum allowable speed.
    公开号:BR102012032806B1
    申请号:R102012032806-2
    申请日:2012-12-20
    公开日:2019-04-16
    发明作者:Richard A. Humpal；Travis G. Funseth；David S. Mercer
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    [0001] The present invention relates to agricultural sprayers and, more specifically, to the automatic spray rate control of a spray tip arrangement to compensate for changes in vehicle speed relative to the terrain in order to maintain an application rate constant.
    Background of the Invention [0002] Agricultural sprayers use nozzles to spray a liquid that can be a fertilizer, a pesticide, a fungicide or an insecticide, for example, on crops. Traditional nozzles consist of a hole with geometry controlling the flow, drop size and spray pattern for the target. The flow through the orifice is mainly a function of the orifice area and geometry, as well as the pressure of the fluid in the orifice (that is, the pressure just before the orifice). Since the size of the orifice is fixed, that is, the geometry of the orifice does not change, the most common way of influencing the flow through the nozzle is by changing the pressure.
    [0003] Changing the pressure of the fluid in the nozzle to influence flow changes has become common practice in sprayers, in order to allow variable vehicle speed. Systems change the flow proportionally to the speed of the vehicle to keep the application rate uniform.
    [0004] However, the use of a traditional fixed orifice nozzle has limitations. The pressure versus flow relationship is a square function. Doubling the flow requires increasing the pressure by a factor of four. Unfortunately, the pressure change also changes the dynamics of
    Petition 870180158833, of 12/05/2018, p. 9/31 / 19 atomization, resulting in an impact on spray quality. Spray characteristics, that is, droplet size and spray angle, become smaller when the pressure increases. These changes can negatively impact the spray deposit and spray diversion. Thus, the need arose for a variable flow nozzle with uniform pressure.
    [0005] US patent 7,124,964 discloses a nozzle arrangement including a flexible spray tip that can be manipulated by an actuated gauge member that acts to selectively change the spray tip configuration in response to changes in vehicle speed, from to change the spray tip flow to maintain a desired application flow. This nozzle arrangement has the disadvantage of requiring specialized nozzle construction instead of less expensive normal nozzle configurations.
    Summary of the Invention [0006] In accordance with the present invention, a new arrangement of spray tips including a nozzle arrangement is provided to maintain a desired application rate.
    [0007] An objective of the present invention is to provide a spray tip arrangement which automatically maintains a desired constant spray fluid application rate during changes in vehicle speed relative to the terrain and which overcomes the mentioned disadvantages of the spray arrangement. patented nozzle, while maintaining the advantage of allowing spray fluid to be supplied to the spray tip nozzle arrangement at constant pressure.
    [0008] The objective is achieved by a spray tip nozzle arrangement including a dispenser body defining a connected cavity in fluid communication with a spray fluid inlet arrangement and a spray fluid outlet arrangement, with the arrangement
    Petition 870180158833, of 12/05/2018, p. 10/31 / 19 exit defining a plurality of passages having entries defined as notches located in one or more circular patterns around an axis of vertical rotation of a nozzle selector disk containing a plurality of notches of the exit arrangement, with the outlet arrangement leading to a plurality of normal nozzles carried by the body and having, respectively, spray tips designed to have different spray rates for a certain pressure of the supplied spray fluid, whereby different spray rates are obtained by rotating the nozzle selector disc to different positions by a drive motor, as the engine is automatically controlled to rotate the nozzle selector disc to select one or more nozzles to effect a spray flow corresponding to the speed of the spray vehicle in order to maintain a constant spray fluid application rate.
    [0009] Structure and other objectives of the invention will become apparent from reading the description below, together with the attached drawings.
    Brief Description of the Drawings [00010] Figure 1 is schematic and shows a control system for automatically switching liquid spray fluid between a plurality of nozzles in a spray tip arrangement to control spray flow to maintain a constant application rate with varying travel speeds of the spray vehicle.
    [00011] Figure 2 is a perspective view of a spray tip arrangement including a switchable nozzle arrangement constructed in accordance with the present invention, but with the nozzles being removed from the nozzle connectors for simplicity.
    [00012] Figure 3 is a vertical section view taken through the spray tip arrangement in Figure 2 along a first plane passing through the entrance and a second plane passing through one of the four exits, with the planes meeting on an axis of rotation of the disk
    Petition 870180158833, of 12/05/2018, p. 11/31 / 19 nozzle selector of the nozzle arrangement.
    [00013] Figure 4 is a bottom view of the spray tip arrangement shown in figure 2.
    [00014] Figure 6 is a top view of preference, nozzle selector disc shown in figure 2.
    [00015] Figure 7 is a view in horizontal section taken through the flow direction control distributor body just above the lower flow direction control section of figure 2 is looking down and showing the passage arrangement. of fluid used to drive fluid from the selector disc flow direction selector slots to the four outlets leading to the nozzle connectors.
    [00016] Figure 8 is a vertical section view taken through the lower flow direction control section of the distributor body along line 8-8 of figure 7, but with the lower portion of the upper inlet and disc section. nozzle selector removed for simplicity. [00017] Figure 9 is a view in horizontal section taken through the distributor body along line 9-9 of figure 7, but showing the entire distributor body.
    [00018] Figure 10 is a horizontal section view taken through the distributor body along line 9-9 of figure 7, but showing the entire distributor body.
    [00019] Figures 11-25, respectively, illustrate the fifteen positions of the nozzle selector disc to obtain each of the fifteen spray rates of the spray tip arrangement.
    Description of the preferred embodiment [00020] Referring to Figure 1, a schematic drawing of a control system 10 is shown to maintain the rate of application of an agricultural sprayer to a substantially constant field at different spray vehicle speeds relative to to the ground. The system of
    Petition 870180158833, of 12/05/2018, p. 12/31 / 19 control 10 comprises a plurality of spray tip arrangements 12 (only one shown) that would be mounted in an equally spaced relationship between physical system along the length of a spray boom (not shown). Each of the spray tip arrangements 12 includes a dispenser body 14 having an inlet 16 coupled to receive spray fluid from a supply tube 18 carried by the spray bar and coupled to an outlet of a supply pump 20 having an inlet coupled to a spray fluid source contained within a spray fluid tank 22 carried by the spray vehicle. Four cylindrical tubular nozzle connectors 24, 26, 28 and 30 (shown not in actual locations for clarity), respectively, include upper ends attached to a lower surface of the distributor body 14 in fluid communication with four outlet openings, described below. Four conventional spray nozzles 32, 34, 36 and 38 are, respectively, coupled to lower ends two connectors 24, 26, 28 and 30, the distributor body and nozzles and can be configured in any other suitable way to establish a nozzle connection with the four outlet openings, for example, the nozzles can be snapped into the distributor body.
    [00021] A flow control valve is defined by a circular nozzle selector disc 48 and the distributor body 14 with the nozzle selector disc 48 being located inside the distributor body 14 and a location between inlet 16 and an arrangement flow direction control (described below) and mounted for rotation around a vertical axis of rotation. The flow direction control passage arrangement includes a plurality of notches (described below) that lead and cooperate with passages (also described below) to define an exit passage arrangement that leads to one or more of the nozzle connectors 24- 30 and thus to one or more of the spray nozzles 32-38.
    Petition 870180158833, of 12/05/2018, p. 13/31 / 19 [00022] The nozzle selector disc 48 is selectively positioned by automatic operation of an electric motor, which can be an electrically controlled pneumatic motor, hydraulic or electric, but preferably an electric stepper motor 52 mounted on a central location on a rear surface of the distributor body 14 and having a drive shaft 54 coupled, in a manner described below in more detail, to a central location of the nozzle selector disk 48. The motor 52 is electrically coupled, as per a motor control and signal wire 56 to receive electrical control pulses from a motor controller 58 controlled by an electronic controller 60 coupled to motor controller 58 by an output signal wire 82. Electronic controller 60 can be a microprocessor having a memory in which main chamber mapping data, for example, regarding potential production, soil type, soil nutrients, soil moisture content, herbs , disease and field topography can be stored together with corresponding spray fluid application rate. To accompany this mapping data, a GPS receiver 64 is coupled to the controller by an input signal wire of position 66. A look-up table is also stored in the memory of controller 60, containing data on application rates for spray tips 40-46 at the speed of the spraying vehicle. To follow these data, a spray vehicle speed sensor in relation to terrain 68 is coupled to controller 60 by a speed signal in relation to terrain 70. The type of spray being made and the corresponding spray tips Used spray nozzles can be put into the memory of the controller 60 by a manually operable data entry device 72 coupled to the controller by a data entry wire 74.
    [00023] With reference now to 2 and 3, an arrangement of spray tips 12 of figure 1 is shown, but with nozzles 32-38 and spray tips.
    Petition 870180158833, of 12/05/2018, p. 14/31 / 19 associated spraying being omitted for clarity. It can be seen that the stepper motor 52 includes a cylindrical housing 76 provided at its lower end with a horizontal mounting flange arrangement 78 secured to a top surface of the distributor body 14 by fastening screws 80. In addition, it can be seen that the dispenser body 14 includes an upper cylindrical spray fluid inlet section 82 and a lower cylindrical spray fluid outlet section 84, the two sections 82 and 84 being held between the physical system by a plurality of screw combinations and nut 86 arranged in a circular pattern. It should be understood that, instead of bolt and nut combinations 86, distributor body sections 82 can be secured between physical systems in any suitable manner, including threaded or interlocking connections, for example.
    [00024] As best seen in Fig. 3, a central location of the inlet section 82 of the distributor body 14 is provided with a stepped cylindrical through hole 88. The drive shaft 54 of the stepper motor 52 is arranged over a central axis of hole 88 and connected to the nozzle selector disk 48 by a stem coupler 80 having a blind hole 92 extending axially from an upper end of the coupler and receiving the drive shaft 54, with the coupler 9 being secured for rotation with the stem 54 for being keyed or having a grooved connection (not shown) in a well-known manner and being axially secured by an adjustment screw 94. A lower end section 96 of the stem coupler has a non-rounded section, which can be square or rounded with a plane, for example, received in an aperture of complementary shape 98 located in the axial center of the disc 48. The coupler 90 also includes an annular flange 100 engaging a surface top plate of the nozzle selector disc 48. One or more shims 102 are located on a top side of the flange 100 and occupy any space between a top surface 104 of a
    Petition 870180158833, of 12/05/2018, p. 15/31 / 19 annular fluid 106 defined by a circular recess formed at the bottom of the inlet section 82 and at the top of the outer section 84 of the distributor body 14, the chamber 106 being in fluid communication with the spray fluid inlet 16 and extending over the top of the nozzle selector disk 48. Leakage of fluid from chamber 106 along a flat interface established between inlet section 82 and outlet section 84 of distributor body 14 is prevented by an O-type seal ring located in an annular seal groove provided on the underside of the inlet section 82 outside the chamber 106. Leakage of fluid along an annular interface between the stem coupler 90 and the surface of the through hole 88 is prevented by a low friction annular stem seal 110 located in an annular seal receptacle 112 defined by the through hole 88. An annular seal retaining plate 114 engages with a surface ie on top of the stem seal 110 and is supported on an annular step surface 116 defined by the through hole 88. The retaining plate is held in place by a snap ring 118 which is received in a snap ring annular groove provided in a region of wall surrounding the through hole 88. Referring now also to figure 4, it can be seen that the base of the outlet section 84 of the distributor body 14 includes outlets 120, 122, 124 and 126, respectively, axially aligned with the tubular nozzle connectors 24, 26, 28 and 30.
    [00025] With reference now to figure 5, it can be seen that the outlet section 84 of the distributor 14 contains an arrangement of flow control slots. Considering a vertical line through the center of the plate as the loci of a position of 0 ° at the bottom of the exit section 84 and a position of 180 ° at the top of the section 84, then proceeding clockwise, first, second , third and four flow control slots 128, 130, 132 and 134, respectively, are angularly spaced from each other around the axis of outlet section 84 in an internal ring or circular arrangement of
    Petition 870180158833, of 12/05/2018, p. 16/31 / 19 locations at 0 °, 45 °, 202.5 ° and 225 °, while fifth, sixth, seventh and eighth flow control notches 136, 138 and 140, respectively, are angularly spaced from each other in one external ring or circular arrangement of locations at 0 °, 90 ° and 180 °.
    [00026] Referring now to figure 6, it can be seen that the nozzle selector disc 48 contains an arrangement of nozzle selector notches. Assuming that disk 48 is rotated clockwise for sequencing between positions to effect increasing spray flows through the arrangement of spray tips 12, the position shown is that which prevents flow to all flow control notches in the outlet section 84 In this “zero” flow or “off” position, the first, second, third and fourth nozzle selectors 142, 144, 156 and 148, respectively, are angularly spaced counterclockwise from each other around the disc axis 48 in an inner ring of locations that takes the 0 ° location of the outlet section 84 of the distributor 14 through respective angles of 22.5 °, 112.5 °, 202.5 ° and 292.5 °, while fifth, sixth, seventh and eighth nozzle selector slots 149, 150, 151 and 152, respectively, are angularly spaced clockwise from each other in an outer ring of locations that take the 0 ° location of the control board 50 through the respective angles 90 °, 112.5 °, 135 ° and 157.5 °.
    [00027] With reference again to figure 2 and also to figures 7 and 8, it can be seen that the outlet section 84 of the distributor body 14 includes first, second and third horizontal parallel blind holes 154, 156 and 158, respectively, if extending horizontally from an upper level region on the right side of exit section 84 and making a right angle with a vertical plane P passing through the center of section 84, with exits 124 and 126 being located on the other side of the plane P. As best seen in figure 9, blind holes 154, 156 and 158, respectively, have straight end portions sealed by first, second and third plugs
    Petition 870180158833, of 12/05/2018, p. 17/31 / 19 threaded 160, 162 and 164, respectively. The blind holes 154, 156 and 158 intersect the respective upper end regions of the spray fluid outlets 120, 122 and 126 that each extend vertically in the lower section 84 of the dispenser body 14. A fourth horizontal blind hole 166 is located also located at the upper level of the outlet section 84 of the dispenser body 14, the hole 166 intersecting an upper end region of the spray fluid outlet 124 and being oriented so as to intersect and cross the plane P, with the hole 166 making a approximately 45 ° angle to the P plane. A left end portion of blind hole 166 is provided with a four threaded plug 168. Blind hole 166 includes a reduced diameter section 170 starting at a location where hole 166 intersects the flow control output 124 and the P plane, resulting in an annular shoulder being formed, which defines a valve seat 172 for a one-way control valve ball 174 tend o a purpose explained below. Referring also to figure 10, it can be seen that a fifth horizontal blind hole 176 is located on a second level in the lower distributor body section 84 which is below the first level on which holes 154, 156, 158 and 166 are located , with blind hole 176 being centered along plane P, with an end region of hole 176 being arranged vertically below a final region of fourth hole 166 that traverses plane P. As shown in figure 7, a final base portion of the hole contains a threaded plug 178. Hole 176 is staggered, so as to have a top end section of reduced diameter 180 resulting in a shoulder that defines a valve seat 182 for a one-way control valve sphere 184 having the purpose explained below.
    [00028] As can be seen in figures 7, 8 and 9, of the four flow direction control notches 128, 130, 132 and 134 constituting the inner ring of the flow control notches of the outlet section 84, the notches 128
    Petition 870180158833, of 12/05/2018, p. 18/31 / 19 and 130 are both in fluid communication with blind hole 154 and thus outlet 120, while notches 132 and 134 are both in fluid communication with blind hole 156 and, thus, with outlet 122 The three flow control notches 136, 138 and 140, which make up the outer ring of the flow control notches, extend vertically into outlet section 84, with notch 136 intersecting blind holes 158 and 176, notch 138 intersecting the reduced diameter sections 170 and 180, respectively, of the blind holes 166 and 176. Thus, the notch 136 is in fluid communication with the outlet 126, noting that the control sphere 184 prevents flow to any other outlet, the notch 138 is connected in fluid communication with output 124, noting that control sphere 174 prevents flow to any other output, and notch 140 is coupled in fluid communication with both outputs 124 and 126, noting that the sphere control 184 p allows flow to outlet 126 through hole 176, notch 136 and hole 158. [00029] Table 1 below is a table showing the application rates obtainable for each of the fifteen different selected positions of the nozzle selector shown in the figures 11-25.
    Selector dial position Disc rotation angle (degrees) Output120 | 122 | 126 | 124Nozzle & spray tip capacity Sum of outlet spray rates (L / min)(3.8 L / min = 1 GPM) 321 342 384 368 0 0 0 1 22.5 1 3.8 2 45 2 7.6 3 67.5 1 2 11.4 4 90 4 15.2 5 112.5 1 4 19 6 135 2 4 22.8 7 157.5 1 2 4 26.6 8 180 8 30.4 9 202.5 1 8 34.2 10 225 2 8 38 11 247.5 1 2 8 41.8 12 270 4 8 45.6 13 292.5 1 4 8 49.4 14 315 2 4 8 53.2 15 337.5 1 2 4 8 57 16 360 0
    Referring now to table 1, a table is shown
    Petition 870180158833, of 12/05/2018, p. 19/31 / 19 correlating fifteen selection positions of the nozzle selector disk 58 that are respectively achieved by indexing the selector disk 58 clockwise through 22.5 ° increments from position 0 or “off”, shown in figure 6. Four nozzle spray rates of 3.8 are also listed; 7.6; 15.2; 30.4 L / min (1, 2, 4 and 8 gallons per minute - GPM), respectively, produced by the four tips 40, 42, 44 and 46 of the nozzles 32, 34, 36 and 38, respectively, receiving fluid from the four outputs 120, 122, 124 and 126. A column is also provided indicating the sum of the spray rates achieved by each selector disk position, noting that the application rate in milliliters per square meter (ml / m 2 ) (gallons per acre - GPA) (0.94 ml / m 2 = 1 GPA) for each selector disc position would depend on the travel speed of the spray vehicle.
    [00030] Consequently, with the nozzle selector disk 48 in position 0 or “off”, the disk is at a disk rotation angle of 0 °, in which none of the flow direction control notches 128-140 at the top of the outlet section 84 of the distributor body 14 is selected, that is, in alignment with any of the nozzle selection notches 142-152 of the selector disk 48. Consequently, the sum of the nozzle flows when the selector disk is in the “ off ”is 0 liters per minute (L / min). This relationship between the selector disk and the outlet section 85 is illustrated in figure 11. [00031] Position 1 of the selector disk 48 is achieved by indexing the selector disk 48 clockwise in relation to the outlet section 84 through an angle from 22.5 ° from position 0 °, to the position illustrated in figure 12, in which the selector notch 142 of the selector disk 48 is superimposed on the flow control notch 128 of the outlet section 84 of the distributor body
    14. As described above, flow control notch 128 is coupled in fluid communication with outlet 120 that supplies fluid to nozzle 32, with tip 40 of this nozzle having a spray rate of 3.8 L / min (1 GPM ). [00032] Position 2 of the selector disk 48 is reached by indexing the
    Petition 870180158833, of 12/05/2018, p. 20/31 / 19 selector disc 48 clockwise through an angle of 22.5 ° from position 22.5 °, to a position of 45 ° illustrated in figure 13, in which selector slot 148 of selector disc 48 is superimposed on the flow control notch 132 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 132 is coupled in fluid communication with the outlet 122 that supplies fluid to the nozzle 34, with the tip of this nozzle 42 having a spray rate of 7.6 L / min (2 GPM). [00033] Position 3 of selector disc 48 is achieved by indexing selector disc 48 clockwise through an angle of 22.5 ° from position 45 °., To a position of 67.5 ° illustrated in figure 14 , in which the selector slots 142 and 148 of the selector disk 48 are respectively superimposed on the flow control slots 130 and 134 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 130 is coupled in fluid communication with the outlet 120 that supplies fluid to the nozzle 32, this nozzle having the tip with a spray rate of
    3.8 L / min (1 GPM). Flow control notch 134 is coupled in fluid communication with outlet 122 which is coupled to nozzle 34, with tip 42 of this nozzle having a spray rate of 7.6 L / min (2 GPM). Thus, the sum of the spray rates of the spray tip arrangement 12 is 11.4 L / min (3 GPM).
    [00034] Position 4 of the selector disk 48 is achieved by indexing the selector disk 48 clockwise through one, to a 90 ° position illustrated in figure 15, in which the selector notch 149 of the selector disk 48 is superimposed on the notch. flow control valve 136 of outlet section 84 of distributor body 14. As described above, flow control slot 136 is coupled in fluid communication with outlet 126 that supplies fluid to nozzle 38, with tip 46 of this nozzle having a spray rate of 15.2 L / min (4 GPM). Thus, the spray rate of the spray tip arrangement 12 is 15.2 L / min (4 GPM).
    Petition 870180158833, of 12/05/2018, p. 21/31 / 19 [00035] Position 5 of selector disc 48 is achieved by indexing selector disc 48 clockwise through an angle of 22.5 ° from position 90 ° to a position of 112.5 ° illustrated in figure 16, in which the selector notches 144 and 150 of the selector disk 48 are respectively superimposed on the flow control notches 128 and 136 of the outlet section 84 of the distributor body 14. As described above, the control notch flow 128 is coupled in fluid communication with the outlet 120 that supplies fluid to the nozzle 32, this nozzle having the tip 40 with a spray rate of
    3.8 L / min (1 GPM), and the flow control notch 136 is coupled in fluid communication with outlet 126 that supplies fluid to nozzle 38, with tip 46 of this nozzle having a spray rate of 15.2 L / min (4 GPM). Thus, the total spray rate of the spray tip arrangement 12 is 19 L / min (5 GPM).
    [00036] Position 6 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 135 °, to a position of 157.5 ° illustrated in figure 17, in which the selector slots 148 and 151 of the selector disk 48 are respectively superimposed on the flow control slots 128 and 136 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 128 is coupled in fluid communication with the outlet 122 that supplies fluid to the nozzle 34, with the tip 42 of this nozzle having a spray rate of 7.6 L / min (2 GPM), and the control notch 136 is coupled in fluid communication with the outlet 126 that supplies fluid to nozzle 38, with tip 46 having a spray rate of the spray tip arrangement 12 is 22.8 L / min (6 GPM).
    [00037] Position 7 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 135 °, to a position of 157.5 ° illustrated in figure 18, in which the selector notches 144, 148 and 152 of the selector disk 48 are respectively
    Petition 870180158833, of 12/05/2018, p. 22/31 / 19 superimposed on the flow control notches 130, 134 and 136 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 130 is coupled in fluid communication with the outlet 120 it supplies fluid to the nozzle 32, this nozzle having the tip with a spray rate of 3.8 L / min (1 GPM). The flow control notch 134 is coupled in fluid communication with the outlet 122 that supplies fluid to the 34, with the tip 42 of this nozzle having a spray rate of 15.2 L / min (4 GPM), and the control notch 136 is coupled in fluid communication with outlet 126 that supplies fluid to nozzle 38, with the tip 46 of this nozzle having a spray rate of 15.2 L / min (4 GPM), and control notch 136 is coupled in fluid communication with the outlet 128 that supplies fluid to the nozzle 38, with the tip 46 of this nozzle having a spray rate of 15.2 L / min (4 GPM). Thus, the total spray rate of the spray tip arrangement is 26.6 L / min (7 GPM).
    [00038] Position 8 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 157.5 °, to a position of 180 ° illustrated in figure 19, in which the selector notch 149 of the selector disk 48 is superimposed on the flow control notch 138 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 138 is coupled in fluid communication with the outlet 124 that supplies fluid to nozzle 38, this nozzle having tip 46 with a spray rate of 30.4 L / min (8 GPM). Thus, the total spray rate of the spray tip arrangement 12 is 30.4 L / min (8 GPM).
    [00039] Position 9 of selector disc 48 is achieved by indexing selector disc 48 clockwise through an angle of 22.5 ° from position 180 °, to a position of 202.5 ° illustrated in figure 20, in which the selector slots 142 and 150 of the selector disk 48 are respectively superimposed on the flow control slots 128 and 138 of the outlet section 84
    Petition 870180158833, of 12/05/2018, p. 23/31 / 19 of the dispenser body 14. As described above, flow control notch 128 is coupled in fluid communication with outlet 120 which supplies fluid to nozzle 32 having tip 40 with a spray rate of 0.94 ml / m 2 (1 GPA), and the flow control slot 138 is coupled in fluid communication with the outlet 124 that supplies fluid to the nozzle 38 having the tip 46 with a spray rate of 30.4 L / min (8 GPM). Thus, the spray rate of the spray tip arrangement 12 is 34.2 L / min (9 GPM).
    [00040] Position 10 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 202.5 °, to a position of 225 ° illustrated in figure 21, in which the selector slots 142 and 151 of the selector disk 48 are respectively superimposed on the flow control slots 132 and 138 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 132 is coupled in fluid communication with outlet 122 that supplies fluid to nozzle 34 having tip 42 with a spray rate of 7.6 L / min (2 GPM), and flow control notch 138 is coupled in fluid communication with outlet 124 that supplies fluid to the nozzle 38, the tip 46 of this nozzle with a spray rate of 30.4 L / min (8 GPM). Thus, the spray rate of the spray tip arrangement 12 is 38 L / min (10 GPM).
    [00041] Position 11 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 225 °, to a position of 247.5 ° illustrated in figure 22, in which the selector slots 142 and 146 and 152 of the selector disk 48 are respectively superimposed on the flow control slots 134, 130 and 138 of the outlet section 84 of the distributor body 14. As described above, the flow control notch flow 134 is coupled in fluid communication with the outlet 122 that supplies fluid to the nozzle 34 having the tip 42 with a spray rate
    Petition 870180158833, of 12/05/2018, p. 24/31 / 19 of 7.6 L / min (2 GPM), and the flow control notch 130 is coupled in fluid communication with the outlet 120 that supplies fluid to the nozzle 32 having a tip 40 that has a spray rate 3.8 L / min (1 GPM), and 138 is coupled in fluid communication with outlet 124 that supplies fluid to nozzle 38, with tip 46 of this nozzle having a spray rate of 30.4 L / min ( 8 GPM). Thus, the total spray rate of the spray tip arrangement 12 is 41.8 L / min (11 GPM).
    [00042] Position 12 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 247.5 ° to a position of 270 ° illustrated in figure 23, in which the selector notch 149 of the selector disk 48 is superimposed on the flow control notch 140 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 140 is coupled in fluid communication with both outlets 124 and 126 that supply fluid to nozzles 36 and 38, respectively. The nozzle 36 has the spray tip with a spray rate of 30.4 L / min (8 GPM), and the nozzle 38 has the spray tip 46 having a spray rate of 15.2 L / min, respectively. (4 GPM). Thus, the total spray rate of the spray tip arrangement 12 is 45.6 L / min (12 GPM).
    [00043] Position 13 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 270 ° to a position of 292.4 ° illustrated in figure 24, in which the selector notches 148 and 150 of the selector disk 48 are superimposed on the flow control notches 128 and 140 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 128 is coupled in fluid communication with the outlet 120 that supplies fluid to the nozzle 32 having a spray rate of 3.8 L / min (1 GPM). Flow control notch 140 is connected in fluid communication with both outlets 126 and 124, with outlet 126 supplying fluid to nozzle 38 having tip 46 with flow rate
    Petition 870180158833, of 12/05/2018, p. 25/31 / 19 spray rate of 15.2 L / min (4 GPM) and with the outlet 124 supplying fluid to the nozzle 36 with the tip 44 having a spray rate of 30.4 L / min (8 GPM). Thus, the total spray rate of the spray tip arrangement is 49.4 L / min (13 GPM).
    [00044] Position 14 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 292.5 ° to a position of 215 ° illustrated in figure 25, in which the selector notches 144 and 151 of the selector disk 48 are superimposed on the flow control notches 1232 and 140 of the outlet section 84 of the distributor body 14. As described above, the flow control notch 132 is coupled in fluid communication with the outlet 122 that supplies fluid to the nozzle 34, having the spray tip 42 with a spray rate of 7.6 L / min (2 GPM). Flow control notch 140 is connected in fluid communication with both outlets 126 and 124, with outlet 126 supplying fluid to nozzle 38 having tip 46 with a spray rate of 15.2 L / min (4 GPM) and with outlet 124 supplying fluid to nozzle 36 with tip 44 having a spray rate of 30.4 L / min (8 GPM). Thus, the total spray rate of the spray tip arrangement is 53.2 L / min (14 GPM).
    [00045] Position 15 of selector disk 48 is achieved by indexing the selector disk 48 clockwise through an angle of 22.5 ° from position 215 ° to a position of 237.5 ° illustrated in Fig. 26, in which the selector notches 144, 148 and 152 of the selector disk 48 are superimposed on the flow control notches 130, 134 and 140, respectively, of the outlet section 84 of the distributor body 14. As described above, the control control notch flow 130 is coupled in fluid communication with outlet 120 that supplies fluid to nozzle 32, having the spray tip with a spray rate of 3.8 L / min (1 GPM). Flow control notch 134 is connected in fluid communication with outlet 122 that supplies fluid to nozzle 34 having spray tip 42 with a spray rate of 7.6
    Petition 870180158833, of 12/05/2018, p. 26/31 / 19
    L / min (2 GPM). Flow control notch 140 is connected in fluid communication with both outlets 126 and 124, with outlet 126 supplying fluid to nozzle 38 having tip 46 with a spray rate of
    15.2 L / min (4 GPM) and with the outlet 124 supplying fluid to the nozzle 36 having the tip 44 with a spray rate of 30.4 L / min (8 GPM). Thus, the total spray rate of the spray tip arrangement is 57 L / min (15 GPM).
    [00046] It should be understood that, although the nozzle selector disc 48 and the flow direction control plate 50 are particularly suitable for making it possible to sequentially select different nozzles or nozzle combinations 32-38 to effect eleven ever-increasing spray rates , other selector disk control notch arrangements and outlet arrangements could be designed, which would operate according to the principles of the present invention to obtain satisfactory results for some spraying applications. Additionally, it should be understood that, for some spray application rates, it could be advantageous to provide a selector disk to be moved non-sequentially between the “on” positions of the selector disk, even requiring that the drive motor 52 be inverted sometimes.
    [00047] Having described the preferred embodiment, it is apparent that various modifications can be made without departing from the scope of the invention as defined in the appended claims.
    Petition 870180158833, of 12/05/2018, p. 27/31
    权利要求:
    Claims (6)
    [1]
    1. Arrangement of spray tips (12) for an agricultural sprayer supporting a spray bar carrying a plurality of arrangements of spray tips, characterized by: a distributor body (14) defining a fluid chamber (106) provided with a bottom section having a flat top surface region (104) provided with a plurality of flow control openings (128, 130, 132, 134, 136, 138, 140) having entrances arranged in a circular ring-shaped zone extending around a vertical axis; a plurality of nozzles (32, 34, 36, 38) having, respectively, inlets coupled to receive fluid from the plurality of flow control openings (128, 130, 132, 134, 136, 138, 140); a nozzle selector disc (48) located in the chamber (106) and having a flat bottom surface engaged with the flat top surface region (104) of the bottom section, the nozzle selector disc (48) being mounted for rotation around the axis and provided with a nozzle selection opening (142, 144, 146, 148, 149, 150, 151, 152) located to selectively register with the flow control openings (128, 130, 132, 134, 136, 138, 140) when the disc (48) is rotated in the chamber (106); and an electric motor connected to rotate the nozzle selector disc (48).
    [2]
    2. Spray tip arrangement (12) according to claim 1, characterized in that the plurality of flow control openings (128, 130, 132, 134, 136, 138, 140) are provided with an opening flow control (128, 130, 132, 134, 136, 138, 140) located in a second circular ring zone concentrically located to the first circular ring zone; and the control disc (48) is provided with a second nozzle selection opening (142, 144, 146, 148, 149, 150, 151, 152) located in order to be registered with a flow control opening (128, 130, 132, 134, 136, 138, 140), with the plurality of flow control openings (128, 130, 132, 134, 136, 138, 140) being
    Petition 870180158833, of 12/05/2018, p. 28/31
    2/3 thus located in relation to each other so that inlets of two of the plurality of nozzles are simultaneously coupled to receive fluid from the fluid chamber (106) when the control disc (48) is in a previously selected location in relation to the flow control openings (128, 130, 132, 134, 136, 138, 140).
    [3]
    3. Spray tip arrangement (12) according to any one of claims 1 to 2, characterized in that the plurality of nozzles (32, 34, 36, 38) are provided with first, second, third and fourth nozzles .
    [4]
    Spray tip arrangement (12) according to any one of claims 1 to 3, characterized in that the spray tip capacity of the first nozzle (32, 34, 36, 38), at a supply pressure constant, be 0.94n ml / m 2 , the spray tip capacity of the second nozzle (32, 34, 36, 38) is 7.6n L / min, the spray tip capacity of the third nozzle (32, 34, 36, 38) be 15.2n L / min and the spray tip capacity of the fourth nozzle (32, 34, 36, 38) is 30.4n L / min, with the plurality of nozzle selection openings (142, 144, 146, 148, 149, 150, 151, 152) being located so that the nozzle selector disc (48) and the flow control openings (128, 130, 132, 134, 136, 138, 140) are thus located in the outlet section of the fluid distributor (14) so that, by indexing the nozzle selector disc (48) sequentially between the fifteen given positions separated from each other by 22.5 °, results in the sum of the peak capacities of the first, second, third and four nozzles (32, 34, 36, 38), respectively, increasing by fifteen equal increases from 0n L / min to 57n L / min.
    [5]
    5. Spray tip arrangement (12) according to any one of claims 1 to 3, characterized in that the motor is an electric motor.
    [6]
    6. Arrangement of spray tips (12), according to
    Petition 870180158833, of 12/05/2018, p. 29/31
    3/3 claim 5, characterized by the fact that the electric motor is a stepper motor (52).
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    同族专利:
    公开号 | 公开日
    CA2798800C|2020-07-07|
    US8919676B2|2014-12-30|
    US20130161419A1|2013-06-27|
    BR102012032806A2|2013-11-26|
    EP2606722B1|2014-09-24|
    AU2012265592B2|2017-04-13|
    CN103170417A|2013-06-26|
    CA2798800A1|2013-06-21|
    EP2606722A1|2013-06-26|
    CN103170417B|2017-03-01|
    AR089366A1|2014-08-20|
    RU2012153578A|2014-06-20|
    AU2012265592A1|2013-07-11|
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    法律状态:
    2013-11-26| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-09-11| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2019-02-05| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2019-04-16| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/12/2012, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/12/2012, OBSERVADAS AS CONDICOES LEGAIS |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/333178|2011-12-21|
    US13/333,178|US8919676B2|2011-12-21|2011-12-21|Arrangement for switching nozzles on the go for controlling spray rate|
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