NOZZLE FOR AN AGRICULTURAL SPRAYING IMPLEMENT, AGRICULTURAL SPRAYING IMPLEMENT AND METHOD OF OPERATING AN AGRICULTURAL SPRAYING NOZZLE

Abstract

Hydraulic spray nozzle. The present invention relates to a hydraulic spray nozzle for an agricultural implement comprising at least one of a bleed valve and an annular valve. The bleed valve is configured to control the flow of a bleed portion of the liquid supplied to the spray nozzle. The bleed portion may be directed back to a supply tank for later use. The bleed valve may be an annular valve. A spray valve within the nozzle may also be an annular valve.

Description

NOZZLE FOR AN AGRICULTURAL SPRAYING IMPLEMENT, AGRICULTURAL SPRAYING IMPLEMENT AND METHOD OF OPERATING AN AGRICULTURAL SPRAYING NOZZLE CROSS-REFERENCE TO RELATED REQUESTS

[0001] This application claims the benefit of U.S. Provisional Application No. 62 / 861,816, filed June 14, 2019, entitled HYDRAULIC SPRAY NOZZLE, the description of which is incorporated herein by reference in its entirety. BACKGROUND

[0002] The present invention relates generally to spray nozzles. More particularly, the present invention relates to annular valves in hydraulic spray nozzles for use in agricultural spraying systems.

[0003] Spray nozzles emit liquid sprays for application to various surfaces. Spray nozzles emit the liquid through a spray orifice. The spray characteristics of the liquid spray, such as fan shape and droplet size, vary based on the dimensional characteristics of the spray orifice, such as size and shape, and the flow characteristics of the liquid, such as flow rate and pressure. The pressure and flow rate of the liquid through the nozzle also affect the spray characteristics. Spray nozzles include internal valves to control the flow of liquid to the spray orifice. SUMMARY

[0004] According to one aspect of the invention, a nozzle for an agricultural spraying implement includes a nozzle body configured to be mounted on a distribution line extending from a supply tank that maintains a supply of spraying liquid; a Petition 870250093322, dated 10 / 13 / 2025, p. 18 / 67 2 / 43 flow path extending through the nozzle body between the distribution line and a spray outlet, wherein the flow path includes an inlet path extending from the distribution line to an intersection, a bleed path extending from the intersection, and a spray path extending from the intersection; a bleed valve located in the bleed path and configured to control the flow of a bleed portion of liquid through the bleed path; an orifice valve located in the spray path and configured to control the flow of a spray portion of liquid through the spray outlet; a pressure sensor located in the spray path and configured to generate pressure data relative to the spray portion; and a flow meter located in the nozzle body and configured to generate flow data relative to the spray portion.

[0005] According to another aspect of the invention, a nozzle for an agricultural spraying implement includes a nozzle body configured to be mounted on a distribution line extending from a supply tank that maintains a supply of sprayable liquid; a flow path extending through the nozzle body between the distribution line and a spray outlet; a flow control valve located in the flow path and configured to control the flow of liquid through the flow path; an orifice valve located in the flow path and configured to control the flow of a spray portion of liquid through the spray outlet; a pressure sensor located in the flow path between the flow control valve and the orifice valve, the pressure sensor configured to generate pressure data relative to the liquid. The flow control valve is an annular valve.

[0006] According to yet another aspect of the invention, a Petition 870250093322, dated 10 / 13 / 2025, p. 19 / 67 3 / 43 An agricultural spraying implement includes a storage tank supported by the agricultural spraying implement and configured to store a supply of spray liquid; a plurality of nozzles configured to receive the spray liquid from the storage tank; and a bleed line extending from the nozzle to the storage tank. One of the plurality of nozzles includes a nozzle body configured to be mounted on a distribution line extending from the supply tank; a flow path extending through the nozzle body between the distribution line and a spray outlet, wherein the flow path includes an inlet path extending from the distribution line to an intersection, a bleed path extending from the intersection, and a spray path extending from the intersection;A flow control valve located in the inlet path upstream of the intersection, the flow control valve configured to control the flow of liquid through the inlet path to the intersection; a bleed valve located in the bleed path and configured to control the flow of a bleed portion of liquid through the bleed path; an orifice valve located in the spray path and configured to control the flow of a spray portion of liquid through the spray outlet; a pressure sensor located in the spray path and configured to generate pressure data relative to the spray portion; and a flow meter located in the nozzle body and configured to generate flow data relative to the spray portion. The bleed line is fluidically connected to the bleed path to receive the bleed portion from the bleed path.

[0007] According to yet another aspect of the invention, a method includes Petition 870250093322, dated 10 / 13 / 2025, page 20 / 67 4 / 43 to activate, by a controller, a first spray valve of an agricultural spray nozzle to a first spray position; to detect, by at least one of a pressure sensor and a flow meter, a flow parameter of a spray portion of liquid flowing to the first spray valve; and to activate, by the controller, a bleed valve of the agricultural spray nozzle to a bleed position based on the detected flow parameter, the bleed valve allowing a bleed portion of liquid to flow out of the nozzle without being sprayed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic block diagram of a spraying system.

[0009] Figure 2 is a schematic block diagram of a spray nozzle.

[0010] Figure 3 is a schematic block diagram of a spray nozzle.

[0011] Figure 4 is a cross-sectional view of a spray nozzle.

[0012] Figure 5A is a cross-sectional view showing an annular valve in a first state.

[0013] Figure 5B is a cross-sectional view showing an annular valve in a second state.

[0014] Figure 5C is a cross-sectional view showing an annular valve in a third state. DETAILED DESCRIPTION

[0015] Figure 1 is a schematic block diagram of the spraying system 10. The spraying system 10 includes a supply tank 12, lances 14, distribution lines 16, nozzles 18, bleed lines 20, sensors Petition 870250093322, dated 10 / 13 / 2025, page 21 / 67 5 / 43 of system 28, a control module 24 and a user interface 26. Each nozzle 18 includes sensor(s) 28, spray valve(s) 30, a bleed valve 32 and a nozzle controller 34. The control module 24 includes control circuits 36 and a memory 38.

[0016] The spraying system 10 is configured to apply liquid sprays onto a target surface through the nozzles 18. For example, the spraying system 10 can be configured as part of an agricultural spraying system configured to apply liquid sprays to fields. The spraying system 10 can be configured to apply herbicides, pesticides, fungicides, and liquid fertilizers, among other options. In some examples, the spraying system 10 can be integrated into a self-propelled agricultural sprayer. In other examples, the spraying system 10 can be attached and towed by another agricultural implement. Although the spraying system 10 is described as implemented in an agricultural sprayer, it should be understood that the spraying system 10 can be operated according to the techniques described in this document in various environments and in a variety of applications.The sensors of system 22 are configured to generate data about the spraying system 10 during operation. For example, the sensors of system 22 can be configured to generate any one or more geolocation data, ground speed data, and wheel deflection data, among other types of data.

[0017] Control module 24 is configured to generate and provide spray commands to nozzles 18 to cause nozzles 18 to eject liquid sprays according to the commanded application rate and droplet size. Control module 24 can be configured to provide individual commands for each nozzle 18. For example, control module 24 can generate individual spray commands for each nozzle 18 and Petition 870250093322, dated 10 / 13 / 2025, page 22 / 67 6 / 43 communicate each individual spray command to each nozzle controller 34 in order to control the spray parameters of the liquid spray ejected by each nozzle 18. In one example, the spray commands cause each nozzle 18 to eject a spray of liquid with a specified droplet size at a specified application rate. The spray command can be based on any desired input parameter. For example, a prescription map for a field can be stored in the memory 38 of the control module 24, and the control module 24 can generate the spray commands based on the prescription map. The control module 24 can be configured to generate the spray commands based on geolocation data. For example, the system sensors 22 can include a geolocation receiver communicatively connected to the control module 24.The control module 24 can be configured to generate commands based on location data from GPS (Global Positioning System), GNSS (Global Navigation Satellite System), GPS / RTK (GPS / Real-time Kinematic) or equivalent systems.

[0018] The control module 24 can be of any configuration suitable for controlling the operation of spraying system components 10, data collection, data processing, etc. For example, the control module 24 can generate spray commands, send spray commands to nozzles 18, and receive data from nozzles 18. As such, the control module 24 can be of any type suitable for operating in accordance with the techniques described in this document. In some examples, the control module 24 can be implemented as a plurality of distinct circuit subsets. In some examples, the control module 24 can be integrated into the control system for the Petition 870250093322, dated 10 / 13 / 2025, page 23 / 67 7 / 43 agricultural implement. In other examples, control module 24 may be separate and in communication with the agricultural implement's control system.

[0019] Control circuit 36 ​​is configured to implement process functionality and / or instructions. Control circuits 36 may include one or more processors configured to implement process functionality and / or instructions. For example, control circuits 36 may be capable of processing instructions stored in memory 38. Examples of control circuits 36 may include any one or more of a microprocessor, a controller, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other distinct logic or equivalent integrated circuit.

[0020] In some examples, control circuits 36 may include communication circuits configured to facilitate wired or wireless communications. For example, the communication circuit may facilitate radio frequency communications and / or may facilitate communications on a network, such as a local area network, wide area network and / or the Internet.

[0021] Memory 38, in some examples, is described as a computer-readable storage medium. In some examples, a computer-readable storage medium may include a non-transient medium. The term non-transient may indicate that the storage medium is not embedded in a carrier wave or a propagated signal. In certain examples, a non-transient storage medium may store data that may, over time, change (e.g., in RAM or cache). In some examples, memory 38 is temporary memory, meaning that a primary purpose of memory 38 is not long-term storage. Petition 870250093322, dated 10 / 13 / 2025, page 24 / 67 8 / 43 Memory 38, in some instances, is described as volatile memory, meaning that memory 38 does not retain its stored contents when power to the spraying system 10 is turned off. Examples of volatile memories may include random access memories (RAM), dynamic random access memories (DRAM), static random access memories (SRAM), and other forms of volatile memories. In some instances, memory 38 is used to store program instructions for execution by the control circuits 36. For example, memory 38 may store instructions which, when executed by the control circuits 36, cause the control module 24 to generate spraying commands. Memory 38, in one instance, is used by software or applications running on the control circuits 36 to temporarily store information during program execution.

[0022] Memory 38, in some examples, also includes one or more computer-readable storage media. Memory 38 can be configured to store larger amounts of information than volatile memory. Memory 38 can also be configured for long-term storage of information. In some examples, memory 38 includes non-volatile storage elements. For example, the spraying system 10 may include non-volatile storage elements such as flash memories or forms of electrically programmable memories (EPROM) or electrically erasable programmable memories (EEPROM). In some examples, memory 38 may be external and may be received in a memory card slot of the spraying system 10. For example, memory 38 may be an external hard disk, flash drive, memory card, Secure Digital (SD) card, micro SD card, or other similar device. Petition 870250093322, dated 10 / 13 / 2025, page 25 / 67 9 / 43

[0023] The user interface 26 may be any graphical and / or mechanical interface that allows user interaction with the control module 24. For example, the user interface 26 may implement a graphical user interface displayed on a user interface display device 26 to present information to and / or receive input from a user. The user interface 26 may include graphical navigation and control elements, such as graphical buttons or other graphical control elements presented on the display device. The user interface 26, in some examples, includes physical navigation and control elements, such as physically actuated buttons or other physical navigation and control elements. In general, the user interface 26 may include any input and / or output devices and control elements that may allow user interaction with the control module 24.In some examples, user interface 26 can be integrated into a chamber of an agricultural spraying implement.

[0024] Supply tank 12 stores a supply of spraying liquid. Supply tank 12 may be mounted on a frame and / or supported by a surface. For example, supply tank 12 may be mounted on the frame of the agricultural spraying implement and / or supported on the bed of a truck or other vehicle. The spraying system 10 may include a motor device of any desired configuration to drive the liquid through the distribution lines 16. For example, supply tank 12 may be pressurized and / or a pump may be provided to pump the liquid from supply tank 12 through the distribution lines 16 to the nozzles 18.

[0025] Distribution lines 16 are fluidically connected to supply tank 12 to receive liquid from tank of Petition 870250093322, dated 10 / 13 / 2025, p. 26 / 67 10 / 43 Supply 12. Distribution lines 16 may be of any configuration suitable for transporting liquid from supply tank 12 to nozzles 18. Distribution lines 16 may be tubular supply manifolds projecting from an agricultural spraying implement. Distribution lines 16 may be supported by a boom 14 projecting laterally from the implement in relation to a direction of implement travel. Booms 14 may be employed as a single structure or multiple structures supported by the body of the agricultural spraying implement. For example, boom 14 may have two structural sections extending laterally from opposite sides of the implement. In some examples, several nozzles 18 may be connected to a common distribution line 16, so that the distribution line 16 feeds each of the several nozzles 18.In other examples, the distribution lines 16 may include several individual flow tubes that extend to the nozzles 18. In one example, the spray system 10 may include the same number of flow tubes as the nozzles 18.

[0026] Nozzles 18 are mounted on distribution lines 16 to receive liquid from distribution lines 16 and expel the liquid as a spray. Nozzles 18 generate liquid sprays for application onto the target surface, such as application in a field. Each nozzle 18 is configured to direct a portion of the spray liquid received from distribution line 16 through a spray outlet of that nozzle 18. Each nozzle 18 is further configured to direct a portion of the bleed liquid received from distribution line 16 through the bleed line 20.

[0027] Bleed lines 20 are fluidically connected to supply tank 12 and are configured to direct the bleed portion. Petition 870250093322, dated 10 / 13 / 2025, page 27 / 67 11 / 43 of each nozzle 18 to the supply tank 12. In one example, each bleed line 20 extends to the supply tank 12. In another example, several bleed lines 20 extend from and are fluidly connected with a common return line that directs the bleed portions back to the supply tank 12. It should be understood that the spraying system 10 may include as many or as few return lines as desired.

[0028] Sensors 28 are configured to generate spray data relative to nozzle 18. The spray data may include one or more valve position information and liquid parameter information. Sensors 28 may include one or more sensors of various configurations. For example, sensors 28 may include valve sensors associated with spray valves 30 and / or bleed valves 32 and configured to generate valve position information. Sensors 28 may also include parameter sensors configured to generate liquid parameter information. Each nozzle 18 may include several sensors 28 of different types. For example, nozzle 18 may include both valve sensors configured to generate valve position information and parameter sensors configured to generate liquid parameter information.The 28 sensors are configured to provide spray data to the control module 24 and / or nozzle controller 34.

[0029] Valve position information includes information relating to the positioning of the components of spray valves 30 and bleed valves 32. For example, one or both of the spray valves 30 and bleed valves 32 may be actuated by a stepper motor and the valve position information may be a count of Petition 870250093322, dated 10 / 13 / 2025, page 28 / 67 12 / 43 turns. In other examples, sensor 28 may be a transducer, such as a linear transducer, configured to detect the displacement of the valve element of the spray valve 30 and / or bleed valve 32. Thus, it should be understood that each nozzle 18 may include the same number of valve sensors, such as spray valves 30 and / or bleed valves 32.

[0030] Liquid parameter information includes information relating to the liquid flowing through nozzle 18. For example, liquid parameter information may include the volumetric flow rate of the liquid and / or the pressure of the liquid flowing through nozzle 18, among other options. Sensor 28 may thus include one or more flow sensors configured to detect liquid flow rates, may include one or more pressure sensors configured to detect liquid pressures, or may be of any other type suitable for generating liquid parameter information.

[0031] In some examples, sensors 28 may also include spray fan sensors. For example, a sensor 28 may be configured to detect the presence of the spray fan ejected by the nozzle 18 and the characteristics of this spray fan, such as droplet size and fan width. The spray fan sensor 28 may generate and provide information about the spray fan to one or both of the nozzle controller 34 and control module 24.

[0032] Spray valve 30 and bleed valve 32 are located on nozzle 18 and are configured to control the spray characteristics of the liquid spray ejected by nozzle 18. Spray valve 30 and bleed valve 32 are controlled in tandem to control the flow rate and pressure at the spray outlet, which flow rate and pressure affect the spray characteristics. Spray valve 30 and Petition 870250093322, dated 10 / 13 / 2025, p. 29 / 67 13 / 43 bleed valve 32 is actively controlled during operation. A flow path extends through each nozzle of the distribution line 16 to a spray outlet. The flow path splits into a bleed path and a spray path within the nozzle 18. The bleed path directs the bleed portion to the bleed line 20 and the spray path directs the spray portion to the spray outlet.

[0033] Bleed valve 32 is located at nozzle 18 and is configured to control the flow from the bleed portion of the liquid in the common flow path to bleed line 20. Bleed valve 32 can be actuated to a variety of open positions, with each position corresponding to a different sized flow path through nozzle 18 to bleed line 20. The positioning of bleed valve 32 controls the liquid flow rate through bleed line 20 and to supply tank 12. In one example, bleed valve 32 is an annular valve. It should be understood, however, that bleed valve 32 can be of any type suitable for controlling flow through bleed line 20, such as a needle valve, disc valve, or ball valve, among other options. The bleed portion of liquid flow through nozzle 18 reduces the flow rate and spray output.

[0034] Spray valve 30 is located on nozzle 18 and is configured to control the flow from the liquid spray portion of the distribution line 16 to the spray outlet of nozzle 18. In some examples, each nozzle 18 may include multiple spray valves that control the liquid flow. For example, a first spray valve 30 may be located at Petition 870250093322, dated 10 / 13 / 2025, page 30 / 67 14 / 43 upstream of the intersection between the bleed path and the spray path, and a second spray valve 30 may be located in the spray path downstream of the intersection between the bleed path and the spray path. The first spray valve 30 may control the liquid flow to each bleed valve 32 and a second spray valve 30, while the second spray valve 30 may control the flow from the spray portion. For example, the second spray valve 30 may be located at the spray outlet to control the characteristics of the spray outlet. As such, the first spray valve 30 may control the dimensions of a flow path through the nozzle body 18, and the second spray valve 30 may control the configuration of the orifice through which the liquid is ejected as a spray.

[0035] Although nozzle 18 is described as including multiple spray valves 30, it should be understood that nozzle 18 may include a single spray valve. For example, the single spray valve 30 may be located in the flow path through nozzle 18 upstream of the location where the flow path splits into the bleed path and the spray path. As such, liquid may flow through the spray valve 30 before encountering the bleed valve 32. In another example, the single spray valve 30 may be located in the spray path downstream of the location where the flow path splits into the bleed path and the spray path.

[0036] The spray valve 30 can be actuated to any desired position to generate a liquid spray with the desired flow rate and droplet size. In examples where nozzle 18 includes multiple spray valves 30, it should be understood that the spray valves 30 can Petition 870250093322, dated 10 / 13 / 2025, page 31 / 67 15 / 43 all have the same configuration or may have different configurations. In examples where nozzle 18 includes multiple spray valves 30, the spray valves 30 can be individually controlled to generate a spray with the desired flow rate and droplet size. In one example, one or more of the spray valves 30 include annular valves. It should be understood, however, that the spray valve 30 can be of any type suitable for controlling the flow, such as a needle valve, disc valve or ball valve, among other options.

[0037] In one example, each bleed valve 32 and spray valve 30 includes an annular valve. An annular spray valve 30 may be located in the flow path upstream of the intersection between the bleed line and the spray line. An annular bleed valve 32 may be a second annular valve that controls the flow from the bleed portion. The annular spray valve 30 controls the flow of liquid to the nozzle 18 from the distribution line 16. The annular bleed valve 32 controls the flow from the bleed portion to the bleed line 20. The annular spray valve 30 and the annular bleed valve 32 may be controlled in tandem to control the flow parameters of the sprayed portion of liquid.The tandem control of the annular spray valve 30 and the annular bleed valve 32 allows the spray system to control the pressure and flow rate of the spray portion flowing to the spray outlet.

[0038] Nozzle controller 34 is integrated with nozzle 18. Nozzle controller 34 is configured to actuate spray valve 30 and bleed valve 32 based on spray commands from control module 24, the state of the spray system 10, and feedback from sensors 28. Nozzle controller 34 is configured to make the Petition 870250093322, dated 10 / 13 / 2025, page 32 / 67 The spray valve 30 and the bleed valve 32 are actuated to positions so that the spray portion of liquid is ejected from the nozzle 18 at a desired application rate and droplet size. The nozzle controller 34 actively controls the positioning of each bleed valve 32 and spray valve 30 based on liquid parameter information from sensor 28, thus ensuring that the nozzle 18 ejects liquid according to the spray command. The nozzle controller 34 can be of any type suitable for controlling the actuation of the valve 26 based on commands from the control module 24 and / or spray data from sensor 28. The nozzle controller 34 may include control and memory circuits.For example, nozzle controller 34 may include a microprocessor, a controller, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other distinct logic or equivalent integrated circuit.

[0039] The application rate is a product of the liquid flow rate at nozzle 18 and the speed of nozzle 18 relative to the surface to be sprayed (i.e., the relative speed of nozzle 18). Nozzle controller 34 can be configured to determine the relative ground speed of nozzle 18 based on the location of nozzle 18 on distribution line 16 and the ground speed of the spraying system 10. For example, system sensors 22 may include ground speed sensors, such as speed sensors incorporating geographic positioning receivers. In one example, the ground speed sensors may be located at opposite ends of distribution lines 16. Nozzle controller 34 can determine the relative speed of its nozzle 18 based on the location of its nozzle 18 along distribution line 16 and the ground speed at each Petition 870250093322, dated 10 / 13 / 2025, page 33 / 67 17 / 43 end of distribution line 16. It should be understood, however, that the system sensors 22 may include any type of sensor suitable for generating ground speed data. The nozzle controller 34 can be configured to determine the relative speed of the nozzle 18 according to any suitable technique. The nozzle controller 34 can change the positions of the bleed valve 32 and the spray valve 30 based on the relative ground speed to eject the spray at the desired application rate.

[0040] It should be understood that the desired droplet size may include a spray consisting of a skewed distribution of various droplet sizes that are characterized by a representative diameter (e.g., a volume median diameter (VD0.5)) or in relation to droplet size categories (e.g., as defined by the American Society of Agricultural and Biological Engineers ASABE S-572.1). As such, the desired droplet size may be understood as a representative diameter and / or based on a standardized category.

[0041] During operation, system 10 generates liquid sprays and applies the liquid sprays onto a target surface. In one example, spraying system 10 is an agricultural spraying system that traverses a field and applies agricultural liquid sprays to the field. The liquid flows through distribution lines 16 to nozzles 18 at a pressure generated by the motor device, such as a pump, associated with the supply tank 12.

[0042] Control module 24 generates spray commands and transmits the spray commands to nozzles 18 to cause nozzles 18 to eject liquid sprays according to the application rate and droplet size commanded. The spray command is received Petition 870250093322, dated 10 / 13 / 2025, page 34 / 67 18 / 43 by nozzle controller 34. For each nozzle 18, nozzle controller 34 actuates spray valve 30 to a spray position and bleed valve 32 to a bleed position associated with the first application rate and a first droplet size based on the spray command. Sensors 28 generate spray data, including valve position information based on the positions of bleed valve 32 and spray valve 30, and liquid parameter information based on liquid flow and pressure through nozzle 18. Actuation of bleed valve 32 is detected by a sensor 28 associated with bleed valve 32. Actuation of bleed valve 30 is detected by a sensor 28 associated with spray valve 30. Sensors 28 generate valve position information based on the actuation state of bleed valve 32 and spray valve 30.The valve position information provides the position to which valve 26 is actuated based on the spray command. Other sensors 28, such as one or more flow meters and pressure sensors, detect the parameters of the liquid flowing through the nozzle 18 and generate information about the liquid parameters. The sensors 28 can transmit the spray data, including valve position information and liquid parameter information, to the control module 24 and / or nozzle controller 34.

[0043] The positions of the bleed valve 32 and spray valve 30 are actively controlled to ensure that the liquid spray has the desired spray characteristics. Varying the position of the spray valve 30 alters the size of the restriction associated with the spray valve 30. Varying the restriction size controls the pressure drop and flow rate through the spray valve 30. In examples where a spray valve 30 is located upstream of the location where Petition 870250093322, dated 10 / 13 / 2025, p. 35 / 67 19 / 43 The flow path splits into the bleed path and the spray path; the spray valve 30 controls the flow rate and pressure at the intersection.

[0044] Bleed valve 32 provides additional flow control for nozzle 18. Actuating bleed valve 32 to an open state directs the bleed portion of liquid back to supply tank 12 via bleed line 20. Bleeding the bleed portion out of nozzle 18 decreases the flow rate at the spray outlet of nozzle 18. As such, bleed valve 32 can be actively controlled to ensure that the spray portion of liquid has the desired flow rate.

[0045] For example, the liquid entering nozzle 18 from distribution line 16 may have an initial flow rate and pressure, such as a flow rate of 125 cubic centimeters per second (cm3 / s) (about 2 gallons / minute) and a pressure of 0.5 megapascal (MPa) (about 75 pounds per square inch (psi)). A first spray valve 30 may be located upstream of the intersection between the bleed path and the spray path. The nozzle controller 34 and / or the control module 24 actuate the first spray valve 30 to a desired position to control the pressure and flow rate of the liquid downstream of the first spray valve 30. For example, the first spray valve 30 may be positioned to create a desired pressure drop. The bleed valve 32 is actuated to a desired position to reduce the flow rate at the spray outlet of nozzle 18.For example, where the application rate requires a flow of 1.5 gallons / minute, bleed valve 32 can be positioned to direct 0.5 gallons / minute to perform bleed of line 20. The remaining 1.5 gallons / minute proceed through the spray path at nozzle 18 and are ejected through the spray outlet. Petition 870250093322, dated 10 / 13 / 2025, p. 36 / 67 20 / 43

[0046] The positions of the bleed valve 32 and each spray valve 30 can be continuously altered during operation to ensure that the spray pattern has the desired spray characteristics. For example, as the agricultural spraying implement decelerates or accelerates, the nozzles 18 need to eject the liquid at a lower or higher flow rate to ensure that the liquid is applied at the desired application rate. The nozzle controller 34 can actuate the bleed valve 32 to change the size of the flow path through the bleed valve 32, thus altering the flow rate at the spray outlet of the nozzle 18. In one example, as the agricultural implement rotates, some nozzles 18 will accelerate relative to the ground surface and some nozzles 18 will decelerate relative to the ground surface.In the 18 nozzles that accelerate, the bleed valve 32 can be actuated to a more closed state, narrowing the flow path through the bleed valve 32 and increasing the flow rate at the spray outlet. In the 18 nozzles that decrease speed, the bleed valve 32 can be actuated to a more open state, widening the flow path through the bleed valve 32 and decreasing the flow rate at the spray outlet.

[0047] The spraying system 10 offers significant advantages. Each nozzle 18 includes a bleed valve 32 that controls the flow of a bleed portion of liquid back to the supply tank 12. As such, the liquid is continuously circulating within the spraying system 10. In addition, the bleed valve 32 allows further control over the characteristics of the spray ejected by the nozzle 18. The position of the bleed valve 32 can be controlled to distinctly alter the characteristics of the spray portion. Some nozzles 18 may include a first spray valve 30 located upstream of the intersection between the bleed line and the spray line and a second spray valve 30 located at Petition 870250093322, dated 10 / 13 / 2025, page 37 / 67 21 / 43 downstream of the intersection. The first spray valve 30 can affect the pressure and flow rate of the liquid flowing to the intersection. The bleed valve 32 is controlled to close the bleed portion of this liquid, and the second spray valve 30 controls the spraying of the liquid. The first spray valve 30 and bleed valve 32 can be controlled in tandem to ensure a desired pressure and flow rate at the second spray valve 30. Furthermore, each of the spray valves 30 and bleed valve 32 can include annular valves. Annular valves allow distinct control over the pressure and flow through the valve. As such, annular valves allow greater control over the spray characteristics, permitting more precise adjustment during spraying. Additionally, the nozzle controller 34 and / or the control module 24 can individually control each of the spray valves 30 and bleed valve 32.Individual control of each spray valve 30 and bleed valve 32 allows for finer spray control, ensuring that the spray is applied at the desired application rate and droplet size. Both the application rate and droplet size affect the effectiveness of the applied liquid.

[0048] Figure 2 is a schematic block diagram of the 18''' nozzle. The 18''' nozzle includes orifice valve 30', bleed valve 32', flow meter 40, pressure sensor 42, nozzle body 44 and controller 46. The nozzle body 44 includes the flow path 48. The flow path 48 includes the inlet path 50, bleed path 52, spray path 54 and intersection 56. The supply tank 12, distribution line 16 and bleed line 20 of the spraying system 10 are shown (Figure 1).

[0049] The 18'' nozzle is substantially similar to the 18 nozzle (Figure 1) and can be operated according to the techniques described in this document. The Petition 870250093322, dated 10 / 13 / 2025, page 38 / 67 Controller 46 is substantially similar to nozzle controller 34 (Figure 1) and / or control module 24 (Figure 1) and can be operated according to the techniques described in this document. Controller 46 can be dedicated to nozzle 18''', similar to nozzle controller 34, or configured as a system-wide controller, similar to control module 24.

[0050] The 18''' nozzle is mounted on the distribution line 16 to receive liquid from the distribution line 16. The distribution line 16 is fluidically connected to the supply tank 12 to receive liquid from the supply tank 12. The nozzle body 44 can be connected to the distribution line 16 in any desired manner, such as via a mounting bracket. The flow path 48 extends through the nozzle body 44 to provide a flow passage for liquid to flow through the nozzle body 44. The inlet path 50 receives liquid from the distribution line 16 and extends to the intersection 56. The bleed path 52 extends from the intersection 56 and provides a flow path for a bleed portion of liquid to exit the 18''' nozzle without being applied as a spray.Bleed line 20 extends from nozzle body 44 to supply tank 12 and is configured to direct the bleed portion back to supply tank 12. Spray path 54 extends from intersection 56 to orifice valve 30'. Spray path 54 provides a flow path for a portion of liquid spray to flow to orifice valve 30' to be applied as a liquid spray.

[0051] Bleed valve 32' is located in nozzle body 44 in bleed path 52. Bleed valve 32' is configured to control the flow from the bleed portion of liquid through bleed path 52. Bleed valve 32' is communicatively connected to Petition 870250093322, dated 10 / 13 / 2025, p. 39 / 67 23 / 43 controller 46 to receive commands from controller 46 and provide feedback to controller 46. For example, the bleed valve 32' may include a position sensor, such as sensor 28 (Figure 1), which generates information about the position of the components of the bleed valve 32' and provides this information to controller 46. In one example, the bleed valve 32' is driven by a stepper motor, so the positional feedback may be a count of the stepper motor's revolutions. The bleed valve 32' is an actively controlled valve, so the dimensions of the flow path through the bleed valve 32' can be continuously adjusted during operation. The bleed valve 32' can be of any configuration suitable for actively controlling the flow from the bleed portion to the bleed line 20. For example, the bleed valve 32' can be an annular or needle valve, among other options.

[0052] The orifice valve 30' is located in the nozzle body 44 in the spray path 54. In the example shown, the orifice valve 30' is located at the spray outlet of nozzle 18'''. The orifice valve 30' controls the spray orifice setting at the spray outlet. The orifice valve 30' is communicatively coupled to the controller 46 to receive commands from the controller 46 and provide feedback to the controller 46. For example, the orifice valve 30' may include a position sensor, such as sensor 28, which generates information about the position of the orifice valve 30' components and provides this information to the controller 46. In one example, the orifice valve 30' is driven by a stepper motor, so the positional feedback may be a stepper motor revolution count.The 30' orifice valve is an actively controlled valve, so the flow path through the 30' orifice valve can be continuously adjusted during operation. Petition 870250093322, dated 10 / 13 / 2025, page 40 / 67 24 / 43

[0053] Flow meter 40 is located in the spray path 54 downstream of the intersection 56. Flow meter 40 is configured to detect the flow rate of the liquid spray portion flowing through the spray path 54. Flow meter 40 provides liquid flow information to the controller 46. Flow meter 40 can be of any type suitable for detecting liquid flow through the spray path 54. For example, flow meter 40 can be a cyclone meter or a gear meter, among other options.

[0054] Pressure sensor 42 is located in the spray path 54 downstream of the intersection 56. Pressure sensor 42 is configured to detect the pressure of the liquid flowing through the spray path 54. Pressure sensor 42 provides liquid flow information to the controller 46. Pressure sensor 42 can be of any type suitable for detecting liquid pressure in the spray path 54.

[0055] During operation, liquid is conveyed from supply tank 12 to nozzle 18 through distribution line 16. The liquid enters flow path 48 and flows through the inlet portion 50 of flow path 48 to intersection 56. Bleed valve 32' controls the flow of a bleed portion of liquid through bleed path 52 to bleed line 20. Bleed valve 32' may initially be in a closed state, so that bleed valve 32' prevents any liquid from flowing back to supply tank 12 through bleed line 20. Although bleed valve 32' is shown as located downstream of intersection 56, it should be understood that bleed valve 32' may be located at or near intersection 56, so that no portion or a minimal portion of the bleed line 20 is located upstream of the bleed valve 32'. A portion of liquid spray flows through the Petition 870250093322, dated 10 / 13 / 2025, page 41 / 67 25 / 43 spray path 54 to the 30' orifice valve. With the 30' orifice valve in an open state, the liquid is ejected through the 18'' nozzle spray outlet as a liquid spray.

[0056] The flow meter 40 detects the liquid flow rate in the spray path 54 and provides liquid flow data to the controller 46. The pressure sensor 42 detects the liquid pressure in the spray path 54 and provides liquid pressure data to the controller 46. The controller 46 is configured to actively control the spray from the nozzle 18''', so that the liquid spray is applied at a desired application rate with a desired droplet size. The controller 46 can determine the application rate and droplet size based on the liquid flow data, liquid pressure data, and the position of the orifice valve 30'.

[0057] Spraying can be initiated by controller 46 by providing controls to bleed valve 32' and orifice valve 30' to cause bleed valve 32' and orifice valve 30' to be actuated to the open positions. With bleed valve 32' open, the bleed portion of liquid flows through bleed path 52 to bleed line 20 and back to supply tank 12. With orifice valve 30' open, the spray portion of liquid flows through spray path 54 and out of nozzle spray outlet 18'''.

[0058] Controller 46 can actively control each of the bleed valve 32' and orifice valve 30' during operation to ensure consistent spraying. For example, if a reduction in flow through the spray path 54 is required, controller 46 can cause the bleed valve 32' to increase its opening. Increasing the opening of the bleed valve 32' increases the size of the Petition 870250093322, dated 10 / 13 / 2025, p. 42 / 67 26 / 43 flow path through the bleed valve 32', thus allowing a larger portion of the liquid entering the flow path 48 to be bled back to the supply tank 12 as the bleed portion. If an increase in flow through the spray path 54 is required, the controller 46 can cause the bleed valve 32' to reduce its opening. Reducing the opening decreases the size of the flow path, thus restricting the flow from the bleed portion, so as to allow a smaller portion of the liquid entering the flow path 48 to be bled back to the supply tank 12. The bleed portion can mix with the liquid in the supply tank 12. As such, the bleed portion can be recirculated through the distribution line 16 and back to a nozzle 18'''.

[0059] Figure 3 is a schematic block diagram of the 18'' nozzle. The 18'' nozzle includes a spray valve 30a, orifice valve 30b, bleed valve 32', flow meter 40, pressure sensor 42, nozzle body 44', and controller 46'. The nozzle body 44' includes the flow path 48. The flow path 48 includes the inlet path 50, bleed path 52, spray path 54, and intersection 56. The supply tank 12, distribution line 16, and bleed line 20 of the spraying system 10 are shown (Figure 1).

[0060] The 18'' nozzle is substantially similar to the 18 nozzle (Figure 1) and the 18'' nozzle (Figure 2) and can be operated according to the techniques described in this document. The 46' controller is substantially similar to the 34 nozzle controller (Figure 1), control module 24 (Figure 1) and / or controller 46 (Figure 2) and can be operated according to the techniques described in this document. The 46' controller can be dedicated to the 18'' nozzle, similar to the 34 nozzle controller, or configured as a controller. Petition 870250093322, dated 10 / 13 / 2025, page 43 / 67 27 / 43 of the entire system, similar to control module 24.

[0061] The 18'' nozzle is mounted on the distribution line 16 to receive liquid from the distribution line 16. The distribution line 16 is fluidically connected to the supply tank 12 to receive liquid from the supply tank 12. The nozzle body 44' can be connected to the distribution line 16 in any desired manner, such as via a mounting bracket. The flow path 48 extends through the nozzle body 44' to provide a flow passage for liquid to flow through the nozzle body 44'. The inlet path 50 receives liquid from the distribution line 16 and extends to the intersection 56. The bleed path 52 branches off from the flow path 48 at the intersection 56 and is configured to provide a path for a bleed portion of liquid to exit the 18'' nozzle without being applied as a spray.Bleed line 20 extends from nozzle body 44' to supply tank 12 and is configured to direct the bleed portion back to supply tank 12. Spray path 54 extends from intersection 56 to orifice valve 30b. Spray path 54 is configured to provide a path for a portion of liquid spray to flow to orifice valve 30b to be applied as a liquid spray.

[0062] Bleed valve 32' is located in nozzle body 44' in bleed path 52. Bleed valve 32' is substantially similar to bleed valve 32 (Figure 1) and bleed valve 32' (Figure 2). Bleed valve 32' is configured to control the flow from the bleed portion of liquid through bleed path 52. Bleed valve 32' is communicatively connected to controller 46' to receive commands from controller 46' and provide feedback to the controller. Petition 870250093322, dated 10 / 13 / 2025, page 44 / 67 28 / 43 46'. For example, the bleed valve 32' may include a position sensor, such as sensor 28 (Figure 1), which generates information about the position of the components of the bleed valve 32' and provides this information to the controller 46'. In one example, the bleed valve 32' is driven by a stepper motor, so the positional feedback may be a count of the stepper motor's revolutions. The bleed valve 32' is an actively controlled valve, so the flow path through the bleed valve 32' can be continuously adjusted during operation. The bleed valve 32' may be of any configuration suitable for actively controlling the flow from the bleed portion to the bleed line 20. For example, the bleed valve 32' may be an annular or needle valve, among other options.

[0063] The orifice valve 30b is located in the nozzle body 44' in the spray path 54. The orifice valve 30b is substantially similar to the spray valve 30 (Figure 1) and orifice valve 30' (Figure 2). In the example shown, the orifice valve 30b is located at the spray outlet of nozzle 18''. The orifice valve 30b is configured to set the dimensions of the spray orifice at the spray outlet. The orifice valve 30b is communicatively coupled to the controller 46' to receive commands from the controller 46' and provide feedback to the controller 46'. For example, the orifice valve 30b may include a position sensor, such as sensor 28, which generates information about the position of the components of the orifice valve 30b and provides this information to the nozzle controller 46'.In one example, the 30b orifice valve is actuated by a stepper motor, so the positional feedback can be a count of the stepper motor's revolutions. The 30b orifice valve is an actively controlled valve, so the flow path through the 30b orifice valve can be... Petition 870250093322, dated 10 / 13 / 2025, p. 45 / 67 29 / 43 continuously adjusted during operation.

[0064] Flow valve 30a is located in nozzle body 44' in inlet path 50. Flow valve 30a is substantially similar to spray valve 30 (Figure 1). Flow valve 30a is located upstream of intersection 56. Flow valve 30a is configured to control downstream liquid flow through flow path 48. As such, flow valve 30a controls all liquid flow to intersection 56 from distribution line 16. Flow valve 30a is communicatively connected to controller 46' to receive commands from controller 46' and provide feedback to controller 46'. For example, flow valve 30a may include a position sensor, such as sensor 28, which generates information about the position of the components of flow valve 30a and provides this information to controller 46'.In one example, flow valve 30a is actuated by a stepper motor, so the positional feedback can be a motor revolution count. Flow valve 30a is an actively controlled valve, so the flow path through flow valve 30a can be continuously adjusted during operation. Flow valve 30a can be of any configuration suitable for actively controlling the liquid flow to the 18'' nozzle. For example, flow valve 30a can be an annular valve or a needle valve, among other options. In one example, each of the 32'' bleed valve and flow valve 30a are annular valves.

[0065] Flow meter 40 is located in spray path 54 downstream of intersection 56. Flow meter 40 is configured to detect the flow rate of liquid flowing through spray path 54. Flow meter 40 provides liquid flow information to controller 46'. Flow meter 40 can be of any suitable type. Petition 870250093322, dated 10 / 13 / 2025, pp. 46 / 67 30 / 43 to detect liquid flow through the spray path 54.

[0066] Pressure sensor 42 is located in the spray path 54 downstream of the intersection 56. Pressure sensor 42 is configured to detect the pressure of the liquid flowing through the spray path 54. Pressure sensor 42 provides liquid flow information to the controller 46'. Pressure sensor 42 can be of any type suitable for detecting liquid pressure in the spray path 54.

[0067] During operation, liquid is conveyed from supply tank 12 to nozzle 18''' via distribution line 16. The liquid enters flow path 48 and initially encounters flow valve 30a. Flow valve 30a controls the pressure and flow rate of the liquid flowing downstream through flow valve 30a and through inlet path 50 to the intersection. Controller 46' provides a command to flow valve 30a to cause flow valve 30a to be actuated to a desired spray position. The liquid flows through inlet path 50 to intersection 56. At intersection 56, the bleeding portion flows through bleeding path 52 and the spray portion flows through spray path 54.

[0068] Bleed valve 32' controls the flow from the bleed portion of liquid through bleed path 52 to bleed line 20. Bleed valve 32'' may initially be in a closed state, so that bleed valve 32'' prevents any liquid from flowing back to supply tank 12 through bleed line 20. With bleed valve 32'' in an open state, the bleed portion flows through bleed valve 32'' and back to supply tank 12 through bleed line 20. Opening bleed valve 32'' reduces the flow rate through the Petition 870250093322, dated 10 / 13 / 2025, pp. 47 / 67 31 / 43 spray path 54 due to bleeding of the bleed portion back to the supply tank 12. Although the bleed valve 32' is shown as located downstream of intersection 56, it should be understood that the bleed valve 32' may be located at or near intersection 56, so that no portion or a minimal portion of the bleed line 20 is located upstream of bleed valve 32''. The orifice valve 30b controls the spraying of the liquid spray portion. With the orifice valve 30b in an open state, the liquid is ejected through the spray outlet of the nozzle 18''' as a liquid spray.

[0069] Flow meter 40 detects the liquid flow rate in the spray path 54 and provides liquid flow data to the controller 46'. Pressure sensor 42 detects the liquid pressure in the spray path 54 and provides liquid pressure data to the controller 46'. The controller 46' is configured to actively control the spray from the nozzle 18''', so that the liquid spray is applied at a desired application rate with a desired droplet size. The controller 46' can determine the application rate and droplet size based on the liquid flow data, liquid pressure data, and the position of the orifice valve 30b.

[0070] Controller 46' provides commands to each of the bleed valve 32'', orifice valve 30b, and flow valve 30a. Controller 46' can initiate spraying by causing each of the bleed valve 32'', orifice valve 30b, and flow valve 30a to be actuated to the open positions. With flow valve 30a open, liquid can flow downstream through flow valve 30a and through flow path 48. Flow valve 30a controls the liquid flow rate through inlet line 50 and the liquid pressure downstream of flow valve 30a. As such, the liquid a Petition 870250093322, dated 10 / 13 / 2025, pp. 48 / 67 32 / 43 The upstream fluid of flow valve 30a has a first pressure, while the fluid downstream of flow valve 30a has a second pressure. The positioning of flow valve 30a alters the flow rate and downstream pressure. Opening flow valve 30a increases the flow rate downstream of flow valve 30a and reduces the pressure drop across flow valve 30a. Closing flow valve 30a reduces the flow rate downstream of flow valve 30a and increases the pressure drop across flow valve 30a.

[0071] Bleed valve 32' controls the flow coming from the bleed portion through the bleed path 52 and to the bleed line 20. The positioning of bleed valve 32' affects the parameters of the spray portion flowing through the spray path 54 to the orifice valve 30b. For example, if a reduction in flow through the spray path 54 is required, controller 46' can cause bleed valve 32'' to increase the opening through bleed valve 32'. Increasing the opening of bleed valve 32' increases the size of the flow path through bleed valve 32', thus allowing a larger portion of the liquid entering flow path 48 to be bled back to supply tank 12 as the bleed portion. If an increase in flow through spray path 54 is required, controller 46' may cause bleed valve 32'' to reduce the opening through bleed valve 32'.Reducing the opening decreases the size of the flow path, thereby restricting the flow from the bleed portion, allowing a smaller portion of the liquid entering the flow path 48 to be bled back to the supply tank 12. The bleed portion can mix with the liquid in the supply tank 12. As such, the bleed portion can be recirculated through the distribution line 16 and back to a nozzle 18'''.

[0072] The 30b orifice valve controls the setting of the outlet of Petition 870250093322, dated 10 / 13 / 2025, pp. 49 / 67 33 / 43 spray pattern through which the liquid is ejected into the atmosphere from the 18'' nozzle. The positioning of the 30b orifice valve affects the characteristics of the spray pattern generated by the 18'' nozzle.

[0073] The controller 46' controls the opening of each of the flow valve 30a, orifice valve 30b, and bleed valve 32' to cause the nozzle 18''' to eject a spray with the desired characteristics. For example, the controller 46' can cause the flow valve 30a to be actuated to a position associated with a first flow and first pressure flow downstream of the flow valve 30a. The controller 46' can actuate the bleed valve 32' to a position to alter the characteristics of the liquid flowing through the spray path 54. As such, the flow through the spray path 54 will be less than the flow through the flow valve 30a with the bleed valve 32' in the open state. The controller 46' receives flow information from the flow meter 40 and pressure information from the pressure sensor 42.The 46' controller is configured to control each of the 30b orifice valve, 30a flow valve, and 32'' bleed valve to ensure that the liquid has the desired flow rate and pressure at the 30b orifice valve. As such, the 46' controller can actively control each of the 32' bleed valve, 30b orifice valve, and 30a flow valve throughout the operation to ensure consistent spraying.

[0074] Figure 4 is a cross-sectional view of the 18''' nozzle. The distribution line 16 of the spraying system 10 is shown. The 18'''' nozzle includes a flow valve 30a', orifice valve 30b', flow meter 40', pressure sensor 42', nozzle body 44', flow path 48', orifice 58 and support 60. The flow valve 30a' includes an inlet 62, outlet 64, valve chamber 66, valve seat 68, valve element 70a, actuator 72a, Petition 870250093322, dated 10 / 13 / 2025, pp. 50 / 67 34 / 43 arm 74a and seal 76. Valve element 70 includes free end 78. Orifice valve 30b' includes valve element 70b, actuator 72b and arm 74b.

[0075] The 18'' nozzle is substantially similar to the 18 nozzle (Figure 1), the 18'' nozzle (Figure 2) and the 18'' nozzle (Figure 3). It should be understood that the 18'' nozzle can be operated according to the techniques described in this document. It should also be understood that the 18'' nozzle may include a bypass path, such as the bleed path 52 (Figures 2 and 3), branching off from the portion of the flow path 48' located between the flow valve 30a' and the orifice valve 30b'.

[0076] The 18'' nozzle is mounted on the distribution line 16. The support 60 is connected to the nozzle body 44' and is configured to clamp onto the distribution line 16. The flow path 48' extends through the nozzle body 44' to the orifice 58. The orifice 58 generates the liquid spray when the liquid exits the flow path 48'.

[0077] Flow meter 40' is located in nozzle body 44' and is configured to generate volumetric flow data relative to the liquid flowing to nozzle 18''. In the example shown, flow meter 40' is a cyclonic flow meter that has a sphere that is rotationally driven by the liquid flowing through the body of flow meter 40'. A sensor detects the rotation of the sphere around an axis of flow meter 40' and can generate volumetric flow data based on this rotation. It should be understood, however, that flow meter 40' can be of any type suitable for detecting liquid flow through the flow path and generating volumetric flow data. Furthermore, although flow meter 40' is shown located upstream of flow valve 30a', it should be understood that flow meter 40' could be located in the flow path portion 48'. Petition 870250093322, dated 10 / 13 / 2025, pp. 51 / 67 35 / 43 between flow valve 30a' and orifice valve 30b'. As such, flow meter 40' can be located downstream of flow valve 30a' and upstream of orifice valve 30b'.

[0078] The flow valve 30a' is mounted on the nozzle body 44'. In the example shown, the flow valve 30a' is an annular valve. The valve chamber 66 is defined by the nozzle body 44'. The valve chamber 66 has a first diameter D1. The actuator 72a is mounted on the nozzle body 44'. In the example shown, the actuator 72a is an electric stepper motor. The number of revolutions is counted by a position sensor, such as sensor 28 (Figure 1), and can be communicated to a controller, such as nozzle controller 28 (Figure 1), control module 20 (Figure 1), controller 46 (Figure 2) and / or controller 46' (Figure 3). Valve position information for the flow valve 30a' can be generated based on the revolution count. Although actuator 72a is described as an electric stepper motor, it should be understood that actuator 72a can be of any type suitable for distinctly altering the position of valve element 70a.

[0079] Arm 74a extends from actuator 72a to valve element 70a. In the example shown, arm 74a is a shaft driven by actuator 72a to adjust the position of valve element 70a. It should be understood, however, that arm 74a can be of any type suitable for actuating valve element 70a. Actuator 72a can be configured to control arm 74a linearly or rotatably.

[0080] Valve element 70a is located in the flow path 48' between inlet 62 and outlet 64. Valve element 70a is an elongated cylindrical element configured to move along axis AA during operation. Valve element 70a has a diameter D2. Diameter D2 is smaller than diameter D1 so that liquid can flow around the Petition 870250093322, dated 10 / 13 / 2025, pp. 52 / 67 36 / 43 valve element 70a between the outer circumferential edge of valve element 70a and the wall defining the valve chamber 66.

[0081] The free end 78 of the valve element 70a is located opposite the end connected to the arm 74a. The free end 78 is located orthogonally to the portion of the nozzle body 44' that forms the valve seat 68. The free end 78 being located orthogonally to the sealing surface formed by the valve seat 68 ensures consistent sealing of the flow valve 30a' during operation. The seal 76 is located at the free end 78 of the valve element 70a. The seal 76 is configured to engage with the valve seat 68 with the flow valve 30a' in a closed state. The seal 76 may be a soft seal, such as an elastomeric sealing ring.

[0082] During operation, liquid enters flow valve 30a' through inlet 62, flows between valve element 70a and the wall defining the valve chamber 66, and exits flow valve 30a' through outlet 64. Flow valve 30a' controls the flow rate and pressure of the liquid downstream of flow valve 30a'. The pressure drop across flow valve 30a' is a function of the linear distance L between the free end 78 and outlet 64. As the linear distance L increases, the pressure drop increases and the flow rate decreases. As the linear distance L decreases, the pressure drop decreases and the flow rate increases.

[0083] The portion of the flow path 48' between the flow valve 30a' and the orifice valve 30b' forms a pressure chamber immediately upstream of the orifice valve 30b'. The pressure sensor 42' is associated with that portion of the flow path 48' and is configured to generate pressure data relative to the liquid pressure in this portion of the flow path 48'. The pressure sensor 42' can be of any configuration suitable for Petition 870250093322, dated 10 / 13 / 2025, pp. 53 / 67 37 / 43 detect the liquid pressure in the flow path 48' and generate pressure data relative to this liquid pressure. In one example, the pressure sensor 42' can be mounted on the diaphragm on a printed circuit board located in the nozzle body 44'. The diaphragm can be exposed to the flow path 48'.

[0084] The liquid is ejected as a spray through orifice 58. Orifice valve 30b' is configured to control the size of orifice 58 during spraying. As such, orifice 58 is a variable orifice. Orifice valve 30b' is mounted on nozzle body 44'. Actuator 72b is mounted on nozzle body 44'. In the example shown, actuator 72b is an electric stepper motor. The number of revolutions is counted by a position sensor, such as sensor 28, and can be communicated to one of the nozzle controller 34, control module 24, controller 46 and / or controller 46'. Valve position information for orifice valve 30b' can be generated based on the revolution count. Although actuator 72b is described as an electric stepper motor, it should be understood that actuator 72b can be of any type suitable for distinctly altering the position of valve element 70b.

[0085] Valve element 70b defines orifice 58. In the example shown, valve element 70b is an impact element configured to rotate the liquid and generate the liquid spray. The liquid pressure upstream of valve element 70b and the size of orifice 58 control the droplet size of the liquid spray. As such, the position of valve element 70b is adjusted based on the command of the liquid spray pressure to generate a liquid spray with the desired droplet size. Although valve element 70b is described as an impact element, it should be understood that valve element 70b can be of any configuration suitable for generating the spray. Arm 74b is Petition 870250093322, dated 10 / 13 / 2025, pp. 54 / 67 38 / 43 extends from actuator 72b to valve element 70b. In the example shown, arm 74b is a shaft driven by actuator 72b to adjust the position of valve element 70b. It should be understood, however, that arm 74b can be of any type suitable for actuating valve element 70b. Actuator 72b can be configured to control arm 74b linearly or rotatably.

[0086] The 30a' flow valve, being an annular valve, allows distinct control of the flow rate through the 30a' flow valve and the pressure drop across the 30a' flow valve. Annular valves provide a linear relationship between the position of the valve element 70a and the pressure drop across the 30a' flow valve. The 30a' flow valve offers significant advantages due to the highly controllable linear relationship between flow and pressure drop. Furthermore, the free end 78 is located orthogonally to the valve seat 68. The orthogonal relationship allows the seal 76 to be located at the free end 78. The orthogonal relationship also prevents coining and other wear that may occur in other valves. In environments where no leakage is acceptable, such as in an 18''' spray nozzle, the soft seal 76 provides consistent sealing regardless of the movement of the valve element 70a.

[0087] Figure 5A is a cross-sectional view showing the annular valve 80 in a first state. Figure 5B is a cross-sectional view showing the annular valve 80 in a second state. Figure 5C is a cross-sectional view showing the annular valve 80 in a third state. Figures 5A-5C will be discussed together. The annular valve 80 includes the valve element 70a', actuator 72a', arm 74a', seal 76', body 82, and restrictive flow path 84. The valve element 70a' includes the free end 78' and the rim 86. The body 82 includes the inlet 62', outlet 64', and valve chamber 66'. Petition 870250093322, dated 10 / 13 / 2025, pp. 55 / 67 39 / 43

[0088] The annular valve 80 can be used as a bypass valve, such as bypass valve 32 (Figure 1), bypass valve 32' (Figure 2) and / or bypass valve 32'' (Figure 3). The annular valve 80 can also be used as a flow control valve, such as spray valve 30 (Figure 1), orifice valve 30' (Figure 2), flow valve 30a (Figure 3) and / or flow valve 30b (Figure 4). It should be understood that the annular valve 80 can be operated according to the techniques described in this document.

[0089] The annular valve 80 creates a restrictive orifice to control the characteristics of the liquid flowing through the annular valve 80. The annular valve 80 is used to control the flow rate and / or pressure of the liquid flowing from inlet 62' to outlet 64'. The annular valve 80 is actively controlled to control the size of the restrictive flow path between inlet 62' and outlet 64'. In some examples, the annular valve 80 is located on a spray nozzle, such as nozzle 18 (Figure 1), nozzle 18 (Figure 2), nozzle 18 (Figure 3), and / or nozzle 18 (Figure 4). In some examples, several annular valves 80 are used in parallel and / or in series to control a liquid spray generated by the nozzle.

[0090] The inlet 62' extends through the body 82 to the valve chamber 66'. The outlet 64' extends from the valve chamber 66' and through the body 82. The liquid flowing through the annular valve 80 enters the valve chamber 66' through the inlet 62' and exits the valve chamber 66' through the outlet 64'. In some examples, the valve body 82 is an annular valve body 80 that is separable and replaceable within a nozzle body, such as nozzle body 44 (Figure 2), nozzle body 44' (Figure 3) and / or nozzle body 44'' (Figure 4). In other examples, the valve body 82 is integral to the nozzle body, so that the valve body 82 and the nozzle body 82 are unitary. Petition 870250093322, dated 10 / 13 / 2025, pp. 56 / 67 40 / 43 For example, the inlet 62', the outlet 64' and the valve chamber 66' can be formed, at least in part, by removing material from the nozzle body, casting, manufacturing additives, molding and / or any other suitable way to form the inlet 62', outlet 64' and valve chamber 66'.

[0091] The valve element 70a' is located in the valve chamber 66'. The valve element 70a' is elongated along the valve shaft AA. The valve element 70a' extends between the arm 74a' and the free end 78'. In some examples, the valve element 70a' is cylindrical. The seal 76' is located at the first end 78'. The seal 76' is configured to form a fluid-tight seal between the valve element 70a' and the valve body 82. The seal 76' may be a soft seal, such as an elastomeric sealing ring. Although the seal 76' is shown as located at the first end 78', it should be understood that the seal 76' may be located in the valve body 82.

[0092] The arm 74a' extends from the valve element 70a' to the actuator 72a'. The arm 74a' can be of any type suitable for moving the valve element 70a' within the valve chamber 66'. For example, the actuating arm 74a' can be a piston, a shaft, or a screw. The actuator 72a' is configured to actuate the actuating arm 74a' to move the valve element 70a' within the valve chamber 66'. For example, the actuator 72a' can be an electric motor, a hydraulic motor, a pneumatic motor, or any other type suitable for the actuating arm 74a'. In some examples, the actuator 72a' is a stepper motor. The actuator 72a' can be configured to rotatably and / or linearly actuate the arm 74a'.

[0093] Valve element 70a' defines the restrictive flow path 84 within valve chamber 66'. Valve chamber 66' has a first Petition 870250093322, dated 10 / 13 / 2025, pp. 57 / 67 41 / 43 diameter D1. The valve element 70a has a diameter D2. The diameter D2 is smaller than the diameter D1, so that the liquid can flow around the valve element 70a between the outer circumferential edge of the valve element 70a and the wall defining the valve chamber 66. The restrictive flow path 84 is defined between the valve chamber 66' and the circumferential edge 86 of the valve element 70a'. The length L of the restrictive flow path 84 varies as the valve element 70a' is displaced within the valve chamber 66'.

[0094] During operation, actuator 72a' controls the displacement of valve element 70a' within valve chamber 66' to control the length L of the restrictive flow path 84. The pressure drop and flow rate of the fluid flowing from inlet 62' to outlet 64' is a function of the length L. A decrease in length L reduces the pressure drop, while an increase in length L increases the pressure drop.

[0095] Annular valve 80 is initially in the first state shown in Figure 5A. With annular valve 80 in the first state, the seal 76' forms a fluid-tight seal between the valve element 70a' and the body 82. As such, annular valve 80 prevents liquid from flowing to the outlet 64' when in the first state.

[0096] A position command is generated by a controller, such as nozzle controller 34 (Figure 1), control module 24 (Figure 1), controller 46 (Figure 2) and / or controller 46' (Figure 2), and is transmitted to actuator 72a'. Actuator 72a' feeds arm 74a' based on the position command, thus causing displacement of valve element 70a' along axis AA. Valve element 70a' is pulled away from body 82 and seal 76' disengages from valve body 82, thus opening a fluid path between inlet 62' and restrictive flow path 84. The Petition 870250093322, dated 10 / 13 / 2025, pp. 58 / 67 42 / 43 Fluid enters valve chamber 66' through inlet 62', flows through restrictive flow path 84 and exits valve chamber 66' through outlet 64'.

[0097] The length L of the restrictive flow path 84 controls the flow rate through the annular valve 80 and the pressure difference between the upstream liquid pressure at inlet 62' and the downstream liquid pressure at outlet 64'. For example, the length L is greater with the annular valve 80 in the second state shown in Figure 5B than with the annular valve 80 in the third state shown in Figure 5C. The flow rate through the annular valve 80 is greater with the annular valve 80 in the state shown in Figure 5C than in the state shown in Figure 5B due to the shorter length L of the restrictive flow path 84. The pressure drop across the annular valve 80 is greater with the annular valve 80 in the state shown in Figure 5B than in the state shown in Figure 5C due to the longer length L of the restrictive flow path 84.Therefore, the pressure at outlet 64' is higher with annular valve 80 in the position shown in Figure 5C than with annular valve 80 in the position shown in Figure 5B.

[0098] The annular valve 80 allows distinct control of the liquid characteristics of the spray portion. The length L of the restrictive flow path 84 has a direct relationship with the flow rate and pressure of the liquid flowing through the annular valve 80. As such, using the annular valve 80 in a spray nozzle, such as a nozzle for an agricultural sprayer, allows greater control over the flow rate and pressure of the spray fluid flowing through the annular valve 80.

[0099] Although the invention has been described with reference to exemplary embodiment(s), it will be understood by those skilled in the art that various alterations may be made and equivalents may be substituted for its elements without departing from the scope of the invention. Furthermore Petition 870250093322, dated 10 / 13 / 2025, pp. 59 / 67 43 / 43 In addition, many modifications can be made to adapt a particular situation or material to the teachings of the invention, without departing from its essential scope. Therefore, it is intended that the invention is not limited to the particular embodiment(s) described, but that the invention includes all embodiments that fall within the scope of the appended claims.

Claims

1. Nozzle (18, 18', 18, 18') for an agricultural spraying implement, the nozzle comprising: a nozzle body (44, 44', 44'') configured to be mounted on a distribution line (16) to receive spray liquid; a flow path (48, 48') extending through the nozzle body (44, 44', 44'') between the distribution line (16) and a spray outlet (58); an orifice valve (30, 30b, 30') located in the flow path (48, 48') and configured to control the flow of a spray portion of liquid through the spray outlet (58);characterized in that: the flow path (48, 48') includes an inlet path (50) extending from the distribution line (16) to an intersection (56), and a spray path (54) extending from the intersection (56) to the spray outlet (58), through which the spray portion of liquid flows to the spray outlet (58), and a bleed path (52) extending from the intersection (56); the nozzle (18, 18', 18'', 18''') further comprises a first bleed valve (32, 32', 32'') located in the bleed path (52) downstream of the intersection (56) and configured to control the flow of liquid through the bleed path (52); at least one parameter sensor (28, 40, 42, 40', 42') configured to generate parameter data relative to the spray portion;and a controller (24, 34, 46, 46') communicatively coupled to the bleed valve (32, 32', 32'') and to at least one parameter sensor (28, 40, 42, 40', 42'), the controller (24, 34, 46, 46') being configured to control a flow rate of the liquid spray portion through the spray path (54) based on parameter data, actuating the bleed valve (32, 32', 32) to a bleed position to allow a bleed portion of liquid to flow through the bleed path (52).

2. Nozzle (18, 18', 18, 18'), according to claim 1, characterized in that at least one parameter sensor (28, 40, 42, 40', 42') includes a pressure sensor (28, 42, 42') located in the spray path (54) and configured to generate pressure data relative to the spray portion.

3. Nozzle (18, 18', 18'', 18'''), according to claim 2, characterized in that at least one parameter sensor (28, 40, 42, 40', 42') includes a flow meter (28, 40, 40') located in the nozzle body (44, 44', 44'') and configured to generate flow data relative to the spray portion.

4. Nozzle (18, 18', 18'', 18'''), according to any one of claims 1 to 3, characterized in that a flow control valve (30, 30a, 30a') is located in the inlet path (50) disposed in the flow path (48, 48') upstream of the intersection (56), and in that the flow control valve (30, 30a, 30a') is configured to control the flow of liquid through the flow path (48, 48') up to the intersection (56).

5. Nozzle (18, 18', 18'', 18'''), according to claim 4, characterized in that the flow control valve (30, 30a, 30a') comprises: an actuator (72a, 72a') mounted on the nozzle body (44, 44', 44''); an arm (74a, 74a') extending from the actuator (72a, 72a'); an elongated element (70a, 70a') connected to the arm (74a, 74a'), the elongated element (70a, 70a') located in a valve chamber (66, 66') within the nozzle body (44, 44', 44''); Petition 870250093322, dated 10 / 13 / 2025, p. 62 / 67 3 / 6 where the actuator (72a, 72a') is configured to actuate the arm (74a, 74a') to cause the elongated element (70a, 70a') to move axially within the valve chamber (66, 66').

6. Nozzle (18, 18', 18'', 18'''), according to claim 5, characterized in that: the valve chamber (66, 66') includes an inlet (62, 62') and an outlet (64, 64'); the elongated element (70a, 70a') includes a distal end (78, 78') located orthogonally to the inlet (62, 62'); and the distal end (78, 78') of the elongated element (70a, 70a') is configured to interface with a nozzle body portion (44, 44', 44'') located near the inlet (62, 62') when the flow control valve (30, 30a, 30a') is in a closed state.

7. Nozzle (18, 18', 18'', 18'''), according to claim 6, characterized in that the flow control valve (30, 30a, 30a') further comprises: a seal (76) located at the distal end (78, 78'), the seal configured to interface with the nozzle body portion (44, 44', 44'') when the flow control valve (30, 30a, 30a') is in the closed state.

8. Nozzle (18, 18', 18'', 18'''), according to claim 1, characterized in that the bleed valve (32, 32', 32'') includes an actuator (72a') operatively connected to an elongated element (70a'), the actuator (72a') configured to actuate the elongated element (70a') along a valve shaft.

9. Nozzle (18, 18', 18'', 18'''), according to claim 8, characterized in that the actuator (72a') is an electric motor.

10. Nozzle (18, 18', 18'', 18'''), according to claim 9, Petition 870250093322, dated 10 / 13 / 2025, page 63 / 67 4 / 6 characterized in that the actuator (72a') is a stepper motor.

11. Nozzle (18, 18', 18, 18'), according to any one of claims 4 to 7, characterized in that it further comprises: the controller (24, 34, 46, 46') is further coupled in a communicative manner to each of the flow control valves (30, 30a, 30a') and orifice valves (30, 30b, 30'); wherein the controller (24, 34, 46, 46') is configured to control the actuation of each of the bleed valves (32, 32', 32''), flow control valves (30, 30a, 30a') and orifice valves (30, 30b, 30').

12. Nozzle (18, 18', 18'', 18'''), according to any one of claims 1 to 11, characterized in that the controller (34, 46, 46') is a nozzle controller integrated into the nozzle (18, 18', 18'', 18''').

13. Nozzle (18, 18', 18'', 18'''), according to any one of claims 1 to 12, characterized in that the bleed valve (32, 32', 32'') is an annular valve.

14. Agricultural spraying implement, characterized in that it comprises: a storage tank (12) supported by the agricultural spraying implement and configured to store a supply of spraying liquid; a distribution line (16) extending from the supply tank; a plurality of nozzles configured to receive the spraying liquid from the storage tank (12), wherein at least one first nozzle of the plurality of nozzles is a nozzle (18, 18', 18'', 18''') defined in any one of claims 1 to 13, the nozzle body (44, 44', 44'') of the first nozzle of the plurality of nozzles being mounted on the line of Petition 870250093322, of 10 / 13 / 2025, p.64 / 67 5 / 6 distribution (16); a bleed line (20) extending from the first of the nozzles to the storage tank (12), the bleed line (20) being fluidically connected to the bleed path (52) to receive the bleed portion of the bleed path (52).

15. Method of operation of an agricultural spray nozzle (18; 18', 18'', 18''') mountable on a distribution line (16) to receive liquid for spraying, the nozzle (18, 18', 18, 18') having a spray outlet (58) and an orifice valve (30; 30b; 30b') to control the flow of liquid through the spray outlet (58), the method comprising: actuating, by a controller (24, 34, 46, 46'), the orifice valve (30; 30b; 30b') to a first spray position; detecting a flow parameter of a spray portion of the liquid flowing to the spray outlet (58);and characterized by the fact that it activates, via the controller (24, 34, 46, 46'), a bleed valve (32, 32', 32'') of the agricultural spray nozzle to a bleed position based on the detected flow parameter, in order to control a flow rate of the spray portion, the bleed valve (32, 32', 32'') allowing a bleed portion of liquid to flow out of the nozzle without being sprayed by the spray outlet (58).

16. Method according to claim 15, characterized in that the orifice valve (30; 30b; 30b') is a first spray valve, the method further comprising: actuating, by the controller (24, 34, 46, 46'), a second spray valve (30; 30a; 30a') of the agricultural spray nozzle to a second spray position in order to thereby control the flow and pressure of the downstream liquid through the second spray valve; wherein the second spray valve is located upstream of an intersection (56) between a bleed line (20) in which the bleed valve (32, 32', 32) is located, and a spray line (54), in which the first spray valve is located.

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