Flow adjusting device, spraying system and unmanned aerial vehicle

Abstract

The invention provides a flow adjusting device, a spraying system and an unmanned aerial vehicle, the flow adjusting device comprises a shell, the shell comprises a guide rail, and a groove is formed in the guide rail; at least part of the hose is contained in the shell, and an included angle is formed between the extending direction of the hose and the extending direction of the guide rail; at least part of the adjusting wheel is contained in the guide rail, a contact face is arranged between the adjusting wheel and the hose, the adjusting wheel can slide relative to the shell in the extending direction of the guide rail, and when the adjusting wheel slides relative to the shell, the deformation quantity of the hose is changed under the extrusion action of the adjusting wheel. When the adjusting wheel slides to the position where the groove is located, at least part of the adjusting wheel is contained in the groove. According to the flow adjusting device, the spraying system and the unmanned aerial vehicle, the structure of the flow adjusting device can be simpler.

Description

Technical Field

[0001] The present application relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a flow regulating device, a spraying system and a UAV. Background Art

[0002] With the continuous development of science and technology, drones are gradually replacing manual work in plant protection. Drones can be equipped with spraying systems to spray pesticides, etc., to prevent and control pests and diseases and improve agricultural production efficiency and crop yields.

[0003] Drone spraying systems are usually equipped with throttle valves to adjust the flow rate of the sprayed liquid. In existing plant protection drones, the throttle valve is generally composed of a valve body, a valve core, a valve seat, a valve stem, a bracket, an actuator, a seal, and a mounting part. The structure is relatively complex and the processing technology is also relatively complex. Summary of the invention

[0004] The present application provides a flow regulating device, a spraying system and a drone, which can enable the flow regulating device to have a simple structure.

[0005] In a first aspect, a flow regulating device is provided, comprising: a shell, the shell comprising a guide rail, the guide rail being provided with a groove; a hose, at least a portion of the hose is accommodated in the shell, and an extension direction of the hose and an extension direction of the guide rail form an angle; an adjusting wheel, at least a portion of the adjusting wheel is accommodated in the guide rail, and a contact surface is provided between the adjusting wheel and the hose, the adjusting wheel can slide relative to the shell along the extension direction of the guide rail, and when the adjusting wheel slides relatively, the hose changes its deformation under the squeezing action of the adjusting wheel, and when the adjusting wheel slides to the position of the groove, at least a portion of the adjusting wheel is accommodated in the groove.

[0006] In the embodiment provided by the present application, the cross-sectional area of ​​the hose can be changed by changing the degree of squeezing of the hose during the sliding process of the adjusting wheel, so that the flow rate of the liquid flowing through the hose can be adjusted. The flow rate adjustment is achieved by the cooperation of the adjusting wheel and the hose, so that the flow rate regulating device has a simple structure and is easy to produce and implement. In addition, a groove is provided on the guide rail, and when the adjusting wheel slides to the position of the groove, at least part of the structure of the adjusting wheel can be accommodated in the groove. When the device is applied to products such as drones, when the drone is in a flight scenario such as acceleration or deceleration, the position of the adjusting wheel is not easy to change, and the flow rate of the liquid flowing through the device can be kept stable, which can enable the drone to have a good operating effect.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the groove is disposed on a side of the guide rail away from the hose.

[0008] In the embodiment provided by the present application, under the squeezing action of the adjusting wheel, the hose is deformed, and the adjusting wheel is subjected to the deformation recovery force from the hose. The groove is set on the side of the guide rail away from the hose, which can prevent the adjusting wheel from popping out of the groove under the force of the hose, and can make the setting position of the adjusting wheel more stable.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the device also includes a first magnet and a first magnetic component, the first magnet and the first magnetic component can attract each other, at least a portion of the first magnet is disposed in the groove, and the first magnetic component is disposed on the adjusting wheel.

[0010] In the embodiment provided in the present application, the device includes a first magnet and a first magnetic component. The first magnet is arranged in a groove, and the first magnetic component is arranged on an adjusting wheel. When the adjusting wheel slides to the position of the groove, the magnetic attraction cooperation between the first magnet and the first magnetic component can further improve the position stability of the adjusting wheel, thereby improving the flow stability of the device and improving the operation quality of the product.

[0011] In combination with the first aspect, in some implementations of the first aspect, the adjusting wheel includes a main body and a rotating portion, at least a portion of the rotating portion is accommodated in the guide rail, and the first magnetic attraction member is disposed on the rotating portion.

[0012] In the embodiment provided in the present application, the first magnetic attraction member is arranged on the rotating part of the adjusting wheel, which can make the sliding of the adjusting wheel smoother and enable the first magnetic attraction member and the first magnet to be in full contact when the adjusting wheel slides to the position of the groove, thereby further improving the position stability of the adjusting wheel.

[0013] In combination with the first aspect, in some implementations of the first aspect, there are multiple grooves, and the first magnets are respectively disposed in the multiple grooves.

[0014] In the embodiment provided in the present application, there are multiple grooves, and first magnets are respectively arranged in the multiple grooves, so that the adjusting wheel can maintain a stable position at multiple positions to achieve a stable flow rate. The user can slide the adjusting wheel to the corresponding position according to the actual spray flow requirements, so that the device can adapt to different usage scenarios.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the device also includes an electric drive assembly, the electric drive assembly includes a motor, a lead screw and a slider, the motor is connected to the lead screw, the slider is sleeved on the lead screw, and the slider is connected to the adjusting wheel, when the motor is running, under the transmission action of the lead screw, the slider slides relative to the lead screw and the slider can drive the adjusting wheel to slide relative to the housing.

[0016] In the embodiment provided by the present application, the device includes an electric drive assembly, and the flow rate is adjusted by changing the position of the adjustment wheel through the electric drive assembly, and the flow rate adjustment operation can be more convenient and quick. Moreover, when the motor stops running, the transmission structure of the lead screw can make the position of the slider less likely to change, so that the spraying flow of the device can be more stable.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the device further includes a second magnet and a second magnetic attraction member, the second magnet is disposed on a side of the slider close to the lead screw, and the second magnetic attraction member is disposed on the lead screw.

[0018] In the embodiment provided in the present application, the device includes a second magnet and a second magnetic attraction component. The second magnet is arranged on a side of the slider close to the screw, and the second magnetic attraction component is arranged on the screw. The magnetic attraction cooperation between the second magnet and the second magnetic attraction component can further improve the position stability of the adjusting wheel, thereby improving the flow stability of the device and improving the operation quality of the product.

[0019] In combination with the first aspect, in some implementations of the first aspect, when the second magnetic attraction component is attracted to the second magnet, the first magnetic attraction component is attracted to the first magnet.

[0020] In the embodiment provided in the present application, when the second magnetic component is adsorbed on the second magnet, the first magnetic component is adsorbed on the first magnet. Through the magnetic coordination of the two pairs of magnetic components, the position stability of the adjusting wheel can be further improved to achieve flow stability.

[0021] In combination with the first aspect, in certain implementations of the first aspect, an angle between an extension direction of the guide rail and an extension direction of the hose is in a range of 5° to 35°.

[0022] In the embodiment provided in the present application, the angle range between the extension direction of the guide rail and the extension direction of the hose is 5° to 35°, which can ensure that the adjusting wheel has sufficient contact with the hose during the sliding process to form an appropriate flow adjustment range, and within this angle range, the position of the adjusting wheel can remain relatively stable and is not easy to deviate under the action of acceleration.

[0023] In a second aspect, a spraying system is provided, which comprises a device as described in the first aspect or any possible implementation manner of the first aspect.

[0024] In combination with the second aspect, in certain implementations of the second aspect, the system further includes a plurality of nozzles, and after the liquid in the system flows out through the device, it is divided into a plurality of branches and flows to the plurality of nozzles respectively, and each of the plurality of nozzles is respectively connected in series with a solenoid valve.

[0025] In the embodiment provided in the present application, a plurality of nozzles are respectively connected in series with a solenoid valve, and flow regulation can be achieved by adjusting the number of opened nozzles, which can more fully meet the flow regulation requirements of the spraying system.

[0026] In combination with the second aspect, in some implementations of the second aspect, the solenoid valve is a proportional solenoid valve.

[0027] In the embodiment provided in the present application, the solenoid valve is a proportional solenoid valve, and flow regulation can also be achieved through the proportional solenoid valve itself, which can more fully meet the flow regulation requirements of the spraying system.

[0028] In a third aspect, a drone is provided, comprising a system as described in the third aspect or any possible implementation of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a spraying system provided in an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the main structure of the throttle valve provided in an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the side structure of a throttle valve provided in an embodiment of the present application;

[0032] Figure 4 is an enlarged structural schematic diagram of an adjustment wheel provided in an embodiment of the present application;

[0033] Figure 5 is an enlarged structural schematic diagram of a guide rail provided in an embodiment of the present application;

[0034] Figure 6 is a schematic diagram of the main structure of the throttle valve provided in an embodiment of the present application;

[0035] Figure 7 is a schematic diagram of the main structure of the throttle valve provided in an embodiment of the present application;

[0036] Figure 8 is a schematic cross-sectional structure diagram of an electric drive assembly provided in an embodiment of the present application;

[0037] Fig. 9 is a schematic diagram of the main structure of the throttle valve provided in an embodiment of the present application;

[0038] Fig.10 is a structural schematic diagram of a spraying system provided in an embodiment of the present application;

[0039] Fig.11 It is a schematic diagram of a nozzle arrangement structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0041] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0042] In various embodiments of the present application, the first, second, etc. are only used to indicate that multiple objects are different. For example, the first magnet and the second magnet are only used to indicate different magnets. They should not have any impact on the magnets themselves and their quantity, and the first, second, etc. mentioned above should not impose any limitations on the embodiments of the present application.

[0043] The terms "include", "comprising", "having" and variations thereof mean "including but not limited to", unless specifically emphasized otherwise.

[0044] Figure 1 1 is a schematic diagram of a spraying system provided in an embodiment of the present application, which may also be referred to as a drone spraying system. The spraying system may include a medicine box 101, a water pump 102, a water meter (WM) 103, a solenoid valve 104, a throttle valve 106, and a spray head 105.

[0045] The medicine box 101 can be used to store liquid to be sprayed. In order to ensure stability during the spraying process, a partition or a wave-breaking board can be used in the medicine box 101 to stabilize the liquid and reduce the shaking of the liquid during the operation of the drone.

[0046] The water pump 102 is a power source in the spraying system, and is used to suck and pressurize the liquid in the medicine box 101. The water pump 102 can be a centrifugal pump, which is a vane pump. The vanes interact with the liquid during rotation, and the vanes transfer mechanical energy to the liquid, so that the pressure of the liquid can be increased, thereby achieving the purpose of conveying the liquid.

[0047] The water meter 103 may also be called a flow meter. The water meter 103 may be used to monitor the flow rate of the liquid flowing through the pipeline so as to adjust the flow rate of the spraying system.

[0048] The electromagnetic valve 104 can generate a magnetic field by energizing the electromagnetic coil to attract or push the valve core inside the electromagnetic valve 104 to open or close the fluid channel. The electromagnetic valve 104 can also be used to adjust the flow area and control the flow rate. The electromagnetic valve 104 can be set at a position close to the nozzle 105.

[0049] The spray system may further include a throttle valve 106, which is used to control the flow of liquid. The throttle valve 106 usually adjusts the cross-sectional area of ​​the fluid passing through the valve by changing the position of the valve core, thereby controlling the flow and pressure of the fluid. The valve core may also be called a valve flap. The throttle valve 106 may be arranged on a side of the solenoid valve 104 close to the nozzle 105, or may also be arranged on a side of the solenoid valve 104 away from the nozzle 105.

[0050] The nozzle 105 is the outlet of the liquid, and the nozzle 105 determines the spraying mode and effect. The above-mentioned medicine box 101, water pump 102, water meter 103, solenoid valve 104 and other structures can be arranged in the body of the drone, and the nozzle 105 can be arranged on the surface of the drone body and can be arranged under the drone body to spray the liquid on the crops.

[0051] The medicine box 101, the water pump 102, the water meter 103, the throttle valve 106, the solenoid valve 104 and the nozzle 105 can be connected by a conduit 107, so that the liquid can reach the nozzle 105 from the medicine box through the water pump 102. The conduit 107 can be a hard pipe, or a soft pipe, or can include both a hard pipe and a soft pipe. The hard pipe is a conduit that is not easily deformed by squeezing, and the soft pipe is a conduit that is easily deformed by squeezing. The conduit 107 can be corrosion-resistant and can withstand a certain pressure.

[0052] It should be noted that Figure 1 The structure of the drone spraying system is only used as an example to illustrate that the drone spraying system may include more or fewer components. For example, the drone spraying system may also include a filtering system to filter out solid particles in the liquid medicine to prevent impurities from clogging the nozzle; the drone spraying system may also include an electronic control system, including sensors, controllers, and actuators, etc., for monitoring and adjusting the working state of the spraying system, such as liquid medicine pressure, flow rate, etc. This application does not limit the specific structure of the drone spraying system.

[0053] Figure 2 and Figure 3 is a schematic diagram of a flow regulating device provided in an embodiment of the present application, which can be used to regulate the spraying flow of a drone. The flow regulating device can be applied to Figure 1 In the spray system shown, for example, Figure 1The throttle valve 106 in the spraying system shown. Figure 2 is a front view of the device, and Figure 2 (a) to (c) are schematic diagrams of the structure when the adjustment wheel 310 is located at different positions. Figure 3 can be a side view of the device, and Figure 3 (a) to (c) in the above table can be respectively Figure 2 Corresponding to (a) to (c) in the figure.

[0054] like Figure 2 or Figure 3 As shown, the flow regulating device may include a hose 340 and a shell 330, and at least a portion of the hose 340 may be accommodated in the shell 330. The hose 340 may be a structure that can be deformed under pressure, and illustratively, the material of the hose 340 may be rubber, silicone, etc. In the spraying system, under the action of a centrifugal pump, liquid can be drawn out from the medicine box and transmitted to the nozzle through the hose 340. By changing the cross-sectional area of ​​the hose 340, the flow rate of the liquid can be changed. Among them, Figure 2 The hose 340 indicated by a dotted line may be a portion of the hose 340 disposed in the housing 330 , and the hose 340 indicated by a solid line may be a portion of the hose 340 exposed outside the housing 330 .

[0055] The housing 330 may include a first through hole 331 and a second through hole 332. The first through hole 331 and the second through hole 332 may be arranged opposite to each other. The hose 340 may pass through the first through hole 331 into the housing 330 and pass through the second through hole 332. The length of the hose 340 may be greater than or equal to the distance between the first through hole 331 and the second through hole 332. The length of the hose 340 may also be less than the distance between the first through hole 331 and the second through hole 332. Both ends of the hose 340 may be connected to a hard pipe, and the hard pipe may be connected to the hose 340 in the housing 330. The present application does not limit this. It is only required that the adjusting wheel 310 can maintain contact with the hose 340 when sliding in the guide rail 320.

[0056] The shell 330 may be made of a hard material to protect structures such as the hose 340 disposed in the shell 330 , thereby preventing the hose 340 from changing its cross-sectional area under external impact and affecting the spraying effect.

[0057] Exemplarily, the material of the shell 330 can be a hard non-metallic material such as polycarbonate (PC) and polyvinyl chloride (PVC), or the material of the shell 330 can also be a metal material, such as steel, aluminum, magnesium or other metal or alloy materials.

[0058] The flow regulating device may further include an adjusting wheel 310. A guide rail 320 may be provided on the housing 330. An angle may be formed between the extending direction of the guide rail 320 and the extending direction of the hose 340. At least a part of the structure of the adjusting wheel 310 may be provided in the guide rail 320, and the adjusting wheel 310 may slide relative to the housing 330 along the extending direction of the guide rail 320. During the process of the adjusting wheel 310 sliding relatively in the guide rail 320 along the extending direction of the guide rail 320, the adjusting wheel 310 and the hose 340 may contact each other, and since an angle may be formed between the extending direction of the guide rail 320 and the extending direction of the hose 340, the cross-sectional area of ​​the hose 340 may change under the squeezing action of the adjusting wheel 310, or in other words, the deformation amount of the hose 340 may change under the squeezing action of the adjusting wheel 310.

[0059] For example, see Figure 2 or Figure 3 In the structure shown in FIG. 1 , the adjusting wheel 310 may include a main body 311 and a rotating part 312. At least a portion of the rotating part 312 may be disposed in the guide rail 320. The cross-sectional shape of the rotating part 312 along the xz plane may be circular, so that the adjusting wheel 310 can rotate and slide relative to the housing 330 in the guide rail 320. The cross-sectional shape of the main body 311 along the xz plane may also be circular, and the rotating part 312 may be disposed at the center of the main body 311.

[0060] It should be understood that the extension direction of the guide rail 320 can be a linear direction as shown in the figure, or a non-linear direction. For example, the guide rail 320 can be an arc-shaped linear structure, and it is only necessary to enable the adjusting wheel 310 to slide along the extension direction of the guide rail 320, and the adjusting wheel 310 can change the deformation of the hose 340.

[0061] When the adjusting wheel 310 is disposed at the first end of the guide rail 320, the contact area between the adjusting wheel 310 and the hose 340 is minimized, and the deformation amount of the hose 340 is minimized. Figure 2 (a) or Figure 3 As shown in (a) in FIG. 3 , the first end of the guide rail 320 may be an end of the guide rail 320 close to the first through hole 331. In this state, the flow rate of the liquid flowing through the flow regulating device is the largest.

[0062] Exemplarily, in this state, the deformation amount of the hose 340 may be 0, and the valve opening corresponding to the flow regulating device may be 100%.

[0063] When the adjusting wheel 310 is disposed at the second end of the guide rail 320, the contact area between the adjusting wheel 310 and the hose 340 is the largest, the deformation amount of the hose 340 is the largest, and the cross-sectional area is the smallest. Figure 2(c) or Figure 3 As shown in (c) in FIG. 1 . In this state, the liquid flow through the flow regulating device is minimum. The second end of the guide rail 320 is the end of the guide rail 320 close to the second through hole 332 .

[0064] When the adjusting wheel 310 is located between the first end and the second end of the guide rail 320, the cross-sectional area of ​​the hose 340 is between the cross-sectional areas corresponding to the two end positions. Figure 2 (b) or Figure 3 As shown in (b) in FIG. 1 , correspondingly, the liquid flow rate flowing through the flow regulating device is also between the flow rates corresponding to the two end positions.

[0065] When the adjusting wheel 310 is located at any position on the guide rail 320 , at least a portion of the structure of the adjusting wheel 310 may be exposed from the housing 330 , so that the user can push the adjusting wheel 310 to adjust the spraying flow rate.

[0066] Continue to refer Figure 2 In the structure shown, the guide rail 320 may be provided with a groove 321, and at least part of the structure of the rotating part 312 may be accommodated in the groove 321. The number of the grooves 321 may be multiple, for example, it may be 3 as shown in the figure, including groove 321A, groove 321B and groove 321C. Among them, groove 321A may be arranged at the first end of the guide rail 320, groove 321C may be arranged at the second end of the guide rail 320, and groove 321B may be arranged at the middle position of the guide rail 320. The multiple grooves 321 may constitute different adjustment gears of the flow regulating device. When the rotating part 312 is accommodated in different grooves 321, the hose 340 is squeezed to different degrees by the adjusting wheel 310. Exemplarily, the above Figure 2 (a) to (c) and Figure 3 (a) to (c) in the figure are the corresponding side views when the adjusting wheel 310 slides to the positions of the groove 321A, the groove 321B and the groove 321C, respectively.

[0067] In this example, when the flow rate is increased, the adjusting wheel 310 can be rolled toward the direction close to the groove 321A, and when the flow rate is reduced, the adjusting wheel 310 can be rolled toward the direction close to the groove 321C.

[0068] It should be noted that Figure 2 and Figure 3 In the example shown, there are three grooves 321, forming three adjustment gears. The positions of the grooves 321 corresponding to the three gears are evenly distributed on the guide rail 320, and the corresponding valve openings can be, for example, 100%, 66.7% and 33.3%, respectively. Figure 2 and Figure 3The structure and adjustment principle of the flow regulating device provided by the present application are only used as an example to illustrate the number and distribution position of the adjustment gear that the flow regulating device can achieve. The flow regulating device can include more grooves 321 to form more adjustment gears. For example, the number of grooves 321 can also be 4, 5 or 6. In addition, the setting position of the groove 321 can also make the cross-sectional area of ​​the hose 340 0 under the extrusion of the regulating wheel 310, that is, the valve opening can reach 0%. The present application does not limit the number and distribution of the groove body. In addition, the regulating wheel 310 can be a symmetrical structure, and the number of rotating parts 312 can be 2, which are respectively arranged on both sides of the main body 311 along the y-axis direction shown in the figure. Correspondingly, the housing 330 can include two guide rails 320, and the two guide rails 320 can be symmetrically arranged on the two side walls of the housing 330, so that the two rotating parts 312 of the regulating wheel 310 can be respectively accommodated in the guide rails 320 and slide relative to each other along the extension direction of the guide rails 320. In the above example, the number of the grooves 321 being three may mean that three grooves 321 are provided on each guide rail 320 .

[0069] In the embodiment provided by the present application, flow regulation is achieved by the cooperation of the hose 340 and the regulating wheel 310, and the structure of the flow regulating device is relatively simple and easy to produce and process. The guide rail 320 is provided with a groove 321, and at least part of the structure of the regulating wheel 310 can be accommodated in the groove 321. The flow regulating device is applied to the drone spraying system, and when the drone is in a flying state, for example, during the acceleration or deceleration of the drone, the position of the regulating wheel 310 can be prevented from changing under the action of acceleration, so that the flow through the flow regulating device can be kept stable, thereby improving the operation quality of the drone.

[0070] In some embodiments, the groove 321 may be disposed on a side of the guide rail 320 away from the hose 340 , or in other words, the groove 321 may be disposed on an upper side of the guide rail 320 and may be in communication with an upper edge 3211 of the guide rail 320 .

[0071] When the groove 321 is arranged on the side of the guide rail 320 away from the hose 340, under the push of external force, the adjusting wheel 310 slides along the extension direction of the guide rail 320. When sliding to the position of the groove 321, the external force is removed, and under the elastic force of the hose 340, the adjusting wheel 310 can move upward and be accommodated in the groove 321.

[0072] Under the squeezing action of the adjusting wheel 310, the hose 340 is deformed, and the adjusting wheel 310 is subjected to the deformation restoring force from the hose 340, and the liquid in the hose 340 can also generate pressure. The groove 321 is arranged on the side of the guide rail 320 away from the hose 340, which can prevent the adjusting wheel 310 from popping out of the groove 321 under the action of the hose 340 and the liquid in the hose 340, so that the position of the adjusting wheel 310 is more stable during the operation of the device, thereby making the spraying flow more stable.

[0073] In some embodiments, there is a chamfer at the connection position between the groove 321 and the guide rail 320. For example, when the groove 321 is connected to the upper edge 3211 of the guide rail 320, the connection position between the groove 321 and the upper edge 3211 may be an arc surface, and similarly, when the groove 321 is connected to the lower edge 3212 of the guide rail 320, the connection position between the groove 321 and the lower edge 3212 may be an arc surface.

[0074] The connection position between the groove 321 and the guide rail 320 is chamfered, so that the adjusting wheel 310 can be pushed more easily to slide out of the groove 321 for gear switching.

[0075] In some embodiments, the flow regulating device may also include a first magnet 322 and a first magnetic component 313. At least a portion of the first magnet 322 may be disposed in the groove 321. The first magnetic component 313 may be disposed on the regulating wheel. The first magnet 322 and the first magnetic component 313 may be magnetically matched to form a pair of magnetic components.

[0076] Figure 4 yes Figure 2 The enlarged structural diagram of the adjustment wheel 310 shown in the figure, for example, the first magnetic member 313 can be an annular structure, and the first magnetic member 313 can be sleeved on the rotating part 312 of the adjustment wheel 310. The first magnetic member 313 can be stably connected to the rotating part 312 by bonding or other methods.

[0077] The first magnetic member 313 is an annular structure sleeved on the rotating portion 312 of the adjusting wheel 310, which can make the adjusting wheel 310 slide more smoothly on the guide rail 320 and make the first magnetic member 313 and the adjusting wheel 310 easier to process.

[0078] It should be understood that the first magnetic member 313 may also be other structures, such as an arc-shaped structure or an irregular structure. When the first magnetic member 313 is other structures and the first magnetic member 313 is disposed on the rotating portion 312, the rotating portion 312 may be circular in cross-section along the xz plane at the location of the first magnetic member 313, so that the sliding of the adjusting wheel 310 in the guide rail 320 can be smoother. In addition, the first magnetic member 313 may also be disposed at a location other than the rotating portion 312 of the adjusting wheel 310, such as at a location of the main body 311 close to the rotating portion 312. This is not limited in the present application. It is only required that when the adjusting wheel 310 slides to the position of the groove 321, the first magnetic member 313 and the first magnet 322 can attract each other, so that the position of the adjusting wheel 310 is not easily changed.

[0079] Figure 5 yes Figure 2 The enlarged structural schematic diagram of the guide rail 320 shown in the figure shows that when the number of the grooves 321 is multiple, the number of the first magnets 322 can also be multiple, and the number of the first magnets 322 can be the same as the number of the grooves 321. Exemplarily, when the number of the grooves 321 is 3 as shown in the figure, the number of the first magnets 322 can also be 3, for example, it can include the magnets 322A, 322B and 322C shown in the figure, at least part of the magnet 322A can be accommodated in the groove 321A, at least part of the magnet 322B can be accommodated in the groove 321B, and at least part of the magnet 322C can be accommodated in the groove 321C.

[0080] Therefore, when the adjusting wheel 310 slides to the groove 321, the first magnet 322 can attract the first magnetic member 313, so that the position of the adjusting wheel 310 is more stable. When the drone is in flight, the position of the adjusting wheel 310 is not easy to change under the action of acceleration, so that the spraying flow of the drone is more stable, and the operation quality of the drone is improved.

[0081] It should be understood that the first magnet 322 can be interchanged with the first magnetic member 313. For example, the first magnet 322 can be disposed on the adjustment wheel 310, and the first magnetic member 313 can be disposed in the groove 321. When the first magnet 322 is disposed on the adjustment wheel 310 and the first magnetic member 313 is disposed in the groove 321, the first magnet 322 can also be annularly sleeved on the rotating part 312, and the number of the first magnetic members 313 can be the same as the number of the grooves 321.

[0082] In some embodiments, the rotating portion 312 of the adjusting wheel 310 may be made of a magnetic material, such as iron. In this example, the rotating portion 312 may serve as a magnetic member, and when sliding to the position of the groove 321, the rotating portion 312 may attract the first magnet 322 disposed in the groove 321 to keep the position of the adjusting wheel 310 stable.

[0083] When the material of the rotating part 312 is a magnetic material, there is no need to set an additional magnetic part on the adjusting wheel 310, so that the structure of the flow regulating device is simpler and the processing technology is also simpler. The material of the main body 311 and the material of the rotating part 312 can be the same or different. When the material of the main body 311 is the same as that of the rotating part 312, the main body 311 and the rotating part 312 can be integrally formed by casting or other methods. When the material of the main body 311 is different from that of the rotating part 312, the main body 311 and the rotating part 312 can be fixedly connected by bonding, welding or screwing.

[0084] It should be noted that the groove 321 may also be disposed on a side of the guide rail 320 close to the hose 340, that is, it may be connected to the lower edge 3212 of the guide rail 320. Figure 6 As shown. For example, when the first magnetic member 313 and the first magnet 322 are provided in the device, the groove 321 can also be provided on the side of the guide rail 320 close to the hose 340, and the deformation recovery force of the hose 340 can be overcome by the magnetic attraction of the first magnet 322 and the first magnetic member 313, so that the position of the adjustment wheel 310 can be more stable during the operation of the device. When there are multiple grooves 321, the multiple grooves 321 can be provided on the same side of the guide rail 320, for example, the multiple grooves 321 can all be connected to the upper edge 3211 of the guide rail 320, or can also be connected to the lower edge 3212 of the guide rail 320.

[0085] In the above embodiment, the gear position of the flow regulating device can be adjusted manually by manually pushing the part of the regulating wheel 310 exposed from the shell 330 so that the position of the regulating wheel 310 changes under the action of thrust. The gear position of the flow regulating device can also be adjusted electrically. In this example, the flow regulating device can also include an electric drive component.

[0086] Figure 7 is a schematic diagram of the structure of another flow regulating device provided in an embodiment of the present application, wherein the regulating wheel 310 represented by a solid line is the position of the regulating wheel 310 in the current state, and the regulating wheel 310 represented by a dotted line is the position where the regulating wheel 310 can be set. Figure 7As shown, the flow regulating device can also include an electric drive component 350, which can include a motor 351, a screw 352 and a slider 353. The motor 351 is connected to the screw 352, and the slider 353 is sleeved on the screw 352. The slider 353 is connected to the adjusting wheel 310. When the motor 351 is running, under the transmission action of the screw 352, the slider 353 slides relative to the screw 352 and the slider can drive the adjusting wheel 310 to slide relative to the housing 330.

[0087] The motor 351 and the lead screw 352 can be arranged outside the housing 330, and can be arranged above the adjusting wheel 310. When the motor 351 is running, the lead screw 352 can rotate with its extension direction as the rotation axis under the drive of the motor 351. The outer surface of the lead screw 352 can have an external thread structure, and correspondingly, the inner surface of the slider 353 can have an internal thread structure, and the external thread structure of the lead screw 352 can match the internal thread structure of the slider 353. When the lead screw 352 rotates, the slider 353 can slide relative to the lead screw 352 under the transmission effect of the thread structure. The outer surface of the lead screw 352 is also the side of the lead screw 352 close to the slider 353, and the inner surface of the slider 353 is also the side of the slider 353 close to the lead screw 352.

[0088] Exemplarily, when the lead screw 352 rotates in a counterclockwise direction, the slider 353 may slide in a direction away from the motor 351 , and when the lead screw 352 rotates in a clockwise direction, the slider 353 may slide in a direction close to the motor 351 .

[0089] Figure 8 yes Figure 7 The cross-sectional structure diagram of the slider 353 in the yz plane is as follows: Figure 7 and Figure 8 As shown, the slider 353 may include a sliding portion 3531 and a connecting portion 3532, wherein the connecting portion 3532 may be connected to a side of the sliding portion 3531 close to the adjusting wheel 310, and the sliding portion 3531 may be connected to the lead screw 352. Specifically, the sliding portion 3531 may be sleeved on the lead screw 352, and as described above, the inner wall shape of the sliding portion 3531 may be the same as the outer wall shape of the lead screw 352, so that the sliding portion 3531 can be sleeved on the lead screw 352 and can slide relative to the lead screw 352 under the transmission action of the lead screw 352.

[0090] The connecting portion 3532 may be connected to the adjusting wheel 310. For example, the connecting portion 3532 may include a through hole 3533. The shape of the through hole 3533 may be the same as the shape of the rotating portion 312 of the adjusting wheel 310. The rotating portion 312 may be disposed in the through hole 3533. When the motor 351 is running, under the transmission action of the lead screw 352, the sliding portion 3531 may slide along the extension direction of the lead screw 352. Accordingly, the connecting portion 3532 may drive the adjusting wheel 310 to slide relative to the housing 330 in the guide rail 320.

[0091] In the embodiment provided by the present application, the flow regulating device includes an electric drive component, and the flow gear of the flow regulating device is adjusted by electric drive regulation, which can make the flow regulation operation more convenient and quick. In addition, the lead screw 352 has an external thread, and the slider 353 has an internal thread. The cooperation of the threaded structure can not only realize the sliding of the slider 353, but also make it difficult for the slider 353 to move under the cover of the threaded structure when the motor 351 stops running, so that the position of the regulating wheel 310 can also be relatively stable, so that the flow regulating device can achieve a stable spraying flow.

[0092] In some embodiments, the extension direction of the lead screw 352 may be the same as the extension direction of the guide rail 320. When the extension direction of the lead screw 352 is the same as the extension direction of the guide rail 320, driven by the slider 353, the sliding track of the adjusting wheel 310 may be adapted to the extension track of the guide rail 320, so that the adjusting wheel 310 can slide relatively in the guide rail 320 along the extension direction of the guide rail 320.

[0093] Similar to the above-mentioned flow regulating device for manually adjusting the gear position, when the flow regulating device includes the electric drive assembly 350, the flow regulating device may also include a first magnetic member 313 and a first magnet 322, at least a portion of the first magnet 322 may be disposed in the groove 321, the first magnetic member 313 may be disposed on the adjusting wheel 310, and the first magnetic member 313 may be sleeved on the rotating portion 312 of the adjusting wheel 310. Alternatively, the first magnetic member 313 and the first magnet 322 may also be interchanged, at least a portion of the first magnetic member 313 may be disposed in the groove 321, and the first magnet 322 may be disposed on the adjusting wheel 310.

[0094] Continue to see Figure 8 As shown in the cross-sectional structure, in some embodiments, when the flow regulating device includes an electric drive component 350, the flow regulating device may also include a second magnet 3534 and a second magnetic component 3521, the second magnet 3534 may be arranged on the inner surface of the slider 353, and the second magnetic component 3521 may be arranged on the screw 352.

[0095] It should be understood that when the second magnet 3534 is disposed on the inner surface of the slider 353, the shape and the position of the second magnet 3534 enable the surface of the second magnet 3534 and the inner surface of the slider 353 to form a threaded structure together. Furthermore, when the second magnetic member 3521 is disposed on the surface of the lead screw 352, the shape and the position of the second magnetic member 3521 enable the surface of the second magnetic member 3521 and the surface of the lead screw 352 to form a threaded structure together, and the threaded structure formed by the lead screw 352 and the second magnetic member 3521 can match the threaded structure formed by the slider 353 and the second magnet 3534, so that the lead screw 352 can drive the slider 353.

[0096] The number of the second magnetic members 3521 can be multiple, and the number of the second magnetic members 3521 can be the same as the number of the grooves 321 set on the single-side guide rail 320.

[0097] The setting position of the second magnetic member 3521 may correspond to the setting position of the groove 321. The setting position of the second magnetic member 3521 corresponds to the setting position of the groove 321, which means that when the adjusting wheel 310 slides to the position where the second magnet 3534 and the second magnetic member 3521 are located, the rotating part 312 of the adjusting wheel 310 can move to the position where the groove 321 is located. In other words, when the second magnetic member 3521 is adsorbed on the second magnet 3534, the first magnetic member 313 can be adsorbed on the first magnet 322. When the setting position of the second magnetic member 3521 corresponds to the setting position of the groove 321, the groove 321 and the magnetic component can jointly constitute the adjustment gear of the flow regulating device, and when the flow regulating device is in the adjustment gear, the position of the adjusting wheel 310 can be more stable, and the flow passing through the flow regulating device can also be more stable.

[0098] It should be understood that the setting position of the second magnetic member 3521 may not correspond to the setting position of the groove 321, the second magnetic member 3521 and the second magnet 3534 together form an adjustment gear, and the first magnetic member 313 and the first magnet 322 and the groove 321 together form another adjustment gear, so that the flow regulating device has more adjustment gears to meet a wider flow regulation range. For example, when the number of the second magnetic members 3521 is 3, and the number of the first magnet 322 and the groove 321 is also 3, the flow regulating device can have 6 adjustment gears. When the device includes an electric drive component 350, the regulating wheel 310 can also stop at a position that does not correspond to the above-mentioned groove 321 and the magnetic suction component. As described above, the position of the regulating wheel 310 is stabilized by blocking the threaded structure. The regulating wheel 310 is more stable in the corresponding position of the groove 321 and the magnetic suction component than in other positions, and the spraying flow rate can be more stable.

[0099] It should be understood that the positions of the second magnet 3534 and the second magnetic member 3521 can also be interchanged, the second magnet 3534 can be arranged on the lead screw 352, and the second magnetic member 3521 can be arranged on the inner wall of the sliding part 3531. In this example, the number of the second magnet 3534 can be multiple.

[0100] Fig. 9 It is a schematic diagram of the structure of another flow regulating device provided in an embodiment of the present application. When the flow regulating device includes an electric drive component 350, the above-mentioned groove structure may not be provided on the guide rail 320, and the guide rail 320 may be a smooth guide rail. In this example, as described above, the lead screw 352 and the slider 353 may have a threaded structure that can cooperate with each other. When the motor 351 stops running, the slider 353 is not easy to slide relative to each other by blocking the threaded structure on the lead screw 352 and the slider 353. Alternatively, the flow regulating device may also use the magnetic suction component composed of the above-mentioned second magnet 3534 and the second magnetic suction member 3521 as the adjustment gear of the flow regulating device, and the flow of the flow regulating device is more stable through the magnetic suction cooperation of the second magnet 3534 and the second magnetic suction member 3521.

[0101] When the flow regulating device includes an electric drive component 350 and a groove 321 is provided on the guide rail 320, in order to allow at least a portion of the rotating portion 312 of the adjusting wheel 310 to be accommodated in the groove 321, a certain gap may be provided between the internal thread of the slider 353 and the external thread of the lead screw 352, so that when the motor 351 stops running, at least a portion of the rotating portion 312 can be accommodated in the groove 321, so that the position of the adjusting wheel 310 can be more stable.

[0102] Continue to see Figures 2 to 9 In the flow regulating device structure shown, in some embodiments, the angle between the extension direction of the guide rail 320 and the extension direction of the hose 340 can range from 5° to 35°.

[0103] Exemplarily, the angle between the extension direction of the guide rail 320 and the extension direction of the hose 340 can be 10°, 13°, 15°, 17°, 20°, 21°, 25°, 29°, 30°, etc.

[0104] The angle between the extension direction of the guide rail 320 and the extension direction of the hose 340 is in the range of 5° to 35°, which enables the adjusting wheel 310 to have sufficient contact with the hose 340 during the sliding process to form an appropriate flow adjustment range, and within this angle range, the position of the adjusting wheel 310 can remain relatively stable and is not easy to deviate under the action of acceleration.

[0105] The present application also provides a spraying system, which may include the flow regulating device described in the above embodiment. The structure of the spraying system may be as follows: Figure 1 As shown, the above flow regulating device can be used as Figure 1 Throttle valve 106 is shown.

[0106] In some embodiments, the spraying system may further include a one-way valve (not shown in the figure), which may be used to control the flow direction of the liquid and prevent the liquid from flowing back.

[0107] Exemplarily, the one-way valve member may include structures such as a valve body, a valve seat, a valve core and a spring. The valve core, valve seat and spring may be disposed in the valve body. The valve core may move in the valve body to control the flow direction of the liquid. When the liquid flows into the one-way valve member in the forward direction, the pressure of the liquid may overcome the elastic force of the spring, so that the valve core is opened and the liquid may pass smoothly. The flow rate may be adjusted by adjusting the regulating wheel 310. When the liquid flows in the reverse direction, the pressure of the fluid is insufficient to overcome the elastic force of the spring, and the valve core is pressed back to form a seal to prevent the reverse flow of the fluid.

[0108] When the spray system includes the above-mentioned flow regulating device, the one-way valve can be arranged at the end of the hose 340, and the one-way valve can be arranged at the end of the flow regulating device close to the nozzle 105, or at the end of the flow regulating device away from the nozzle 105. The one-way valve can be arranged inside the housing 330 of the flow regulating device, or outside the housing 330 of the flow regulating device. The one-way valve and the throttle valve can together constitute a one-way throttle valve.

[0109] In some embodiments, the spray system includes Figure 1 When the solenoid valve 104 is shown, the solenoid valve 104 may be a proportional solenoid valve, which can realize both electric switching and flow regulation. When the spraying system includes a proportional solenoid valve, the flow rate can also be adjusted to reach the target flow rate by adjusting the valve opening of the proportional solenoid valve.

[0110] When the spraying system includes both the flow regulating device and the proportional solenoid valve, the flow rate can be adjusted only by adjusting the position of the regulating wheel 310 in the flow regulating device, or the flow rate can be adjusted only by adjusting the valve opening of the proportional solenoid valve. Alternatively, both the position of the regulating wheel 310 in the flow regulating device and the valve opening of the proportional solenoid valve can be adjusted.

[0111] In some embodiments, the spray system may include a spray head 105, and the number of the spray head 105 may be multiple. Fig.10As shown in the structural schematic diagram of the spraying system, the conduit 107 may include a main line 1071 and a plurality of branches 1072, the plurality of branches 1072 are divided at one end of the main line 1071, a nozzle 105 may be provided on each branch 1072, and a solenoid valve 104 may be provided on each branch 1072. When the solenoid valve 104 on the branch 1072 is in an open state, liquid may be sprayed out from the nozzle 105 on the branch 1072, and when the solenoid valve 104 on the branch 1072 is in a closed state, the nozzle 105 on the branch 1072 cannot spray liquid.

[0112] When a solenoid valve 104 is provided on the branch 1072 where each nozzle 105 of the plurality of nozzles 105 is located, the solenoid valve 104 on the branch 1072 may also be a proportional solenoid valve. When a solenoid valve 104 is provided on each of the plurality of branches 1072, a solenoid valve may be provided on the bus or not, and when a solenoid valve is provided on the bus 1071, the solenoid valve on the bus 1071 may be a conventional solenoid valve or a proportional solenoid valve, which is not limited in the present application.

[0113] In this example, the flow rate can be adjusted by controlling the number of opened solenoid valves 104. The combination of multiple solenoid valves 104 and the nozzle 105 is equivalent to forming a throttle valve. The flow rate is adjusted by adjusting the number of opened solenoid valves 104. When the number of opened solenoid valves 104 is greater, the corresponding valve opening is greater and the flow rate is greater. When the number of opened solenoid valves 104 is less, the corresponding valve opening is smaller and the flow rate is smaller.

[0114] The plurality of nozzles 105 may be arranged in rows or columns. Fig.10 The multiple nozzles 105 can also form an array structure according to a certain rule, for example, they can be arranged in Fig.11 The array structure shown. Fig.10 and 11 The arrangement of the plurality of nozzles 105 is only used as an example, and the arrangement of the plurality of nozzles 105 can be reasonably designed according to other structural settings in the drone. According to the size of the spraying flow, the location of the operation area, etc., the number of nozzles 105 opened and the location of the nozzles 105 can be adaptively adjusted to flexibly meet the operation requirements.

[0115] For example, during the operation of the drone, during the outbound journey, the drone has sufficient power, the number of opened solenoid valves 104 can be more, and the drone can perform spraying operations at a large flow rate. During the return journey, a certain amount of power is consumed. In order to enable the drone to complete the operation, the number of opened solenoid valves 104 can be reduced, and the spraying operation can be performed at a small flow rate. For another example, when the area of ​​the operation area is large, the number of opened solenoid valves 104 can be more, and when the area of ​​the operation area is small, the number of opened solenoid valves 104 can be less to meet the operation accuracy.

[0116] The above-mentioned throttle valve, multiple nozzles and solenoid valves, proportional solenoid valves and other structures can be deployed together in a drone, so that the drone can adjust the flow rate through a combination of different flow regulation methods, so that the flow regulation method of the drone is more flexible and the flow rate of the drone can be kept stable.

[0117] An embodiment of the present application also provides a drone, which may include the above-mentioned spraying system.

[0118] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A flow regulating device, characterized in that: include: A housing, the housing comprising a guide rail, and the guide rail is provided with a groove; A hose, at least a portion of which is accommodated in the housing, and an extending direction of the hose and an extending direction of the guide rail form an included angle; An adjusting wheel, at least part of which is accommodated in the guide rail, and a contact surface is provided between the adjusting wheel and the hose, the adjusting wheel can slide relative to the shell along the extension direction of the guide rail, and when the adjusting wheel slides relatively, the hose changes its deformation under the squeezing action of the adjusting wheel, and when the adjusting wheel slides to the position of the groove, at least part of the adjusting wheel is accommodated in the groove.

2. The device according to claim 1, characterized in that The groove is arranged on a side of the guide rail away from the hose.

3. The device according to claim 1 or 2, characterized in that: The device also includes a first magnet and a first magnetic attraction member, the first magnet and the first magnetic attraction member can attract each other, at least a portion of the first magnet is disposed in the groove, and the first magnetic attraction member is disposed on the adjusting wheel.

4. The device according to claim 3, characterized in that The adjusting wheel comprises a main body and a rotating part, at least a part of the rotating part is accommodated in the guide rail, and the first magnetic attraction member is arranged on the rotating part.

5. The device according to claim 3 or 4, characterized in that There are multiple grooves, and the first magnets are respectively arranged in the multiple grooves.

6. The device according to any one of claims 3 to 5, characterized in that The device further comprises an electric drive assembly, which comprises a motor, a lead screw and a slider, wherein the motor is connected to the lead screw, the slider is sleeved on the lead screw, and the slider is connected to the adjusting wheel. When the motor is running, under the transmission action of the lead screw, the slider slides relative to the lead screw and the slider can drive the adjusting wheel to slide relative to the housing.

7. The device according to claim 6, characterized in that The device also includes a second magnet and a second magnetic attraction member, the second magnet and the second magnetic attraction member can attract each other, the second magnet is arranged on a side of the slider close to the lead screw, and the second magnetic attraction member is arranged on the lead screw.

8. The device according to claim 7, characterized in that When the second magnetic attraction component is attracted to the second magnet, the first magnetic attraction component is attracted to the first magnet.

9. The device according to any one of claims 1 to 8, characterized in that The included angle between the extending direction of the guide rail and the extending direction of the hose is in the range of 5° to 35°.

10. A spraying system, characterized in that: Comprising the device as claimed in any one of claims 1 to 9.

11. The system according to claim 10, characterized in that The system also includes a plurality of nozzles. After the liquid in the system flows out through the device, it flows to the plurality of nozzles in a plurality of branches. Each of the plurality of nozzles is connected in series with a solenoid valve.

12. The system according to claim 11, characterized in that The solenoid valve is a proportional solenoid valve.

13. A drone, characterized in that: Comprising a system as claimed in any one of claims 10 to 12.

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