Centrifugal atomization device, air-assisted spraying equipment and vehicle-mounted spraying system

Abstract

The invention discloses a centrifugal atomization device, air-assisted spraying equipment and a vehicle-mounted spraying system, and belongs to the technical field of plant protection equipment. The centrifugal atomization device comprises a device body and a centrifugal atomization disc which are arranged in the axial direction, and the device body comprises a flow guiding device used for conveying liquid to the centrifugal atomization disc and further comprises a driving device used for driving the centrifugal atomization disc to rotate. The outer cover comprises a mounting ring and a plurality of barrier strips, the device body is sleeved with the mounting ring, and the centrifugal atomizing disc is surrounded by the barrier strips. According to the centrifugal atomization device, fog drops are generated in a centrifugal atomization mode, the generated fog drops are more uniform, the atomization effect is good, the outer cover can protect the centrifugal atomization disc, the outer cover is rotatably installed, the situation that liquid drops accumulate on the barrier strip is improved, and the use experience of a user is improved. The air-assisted spraying equipment and the vehicle-mounted spraying system are good in spraying operation effect.

Description

Technical Field

[0001] This invention relates to the field of plant protection equipment technology, and in particular to a centrifugal atomizing device, a pneumatic spraying device, and a vehicle-mounted spraying system. Background Technology

[0002] Currently, spraying systems are being mounted on drones for spraying operations, such as applying pesticides to crops. However, the spraying effect of atomizing spraying equipment in this technology is not ideal. Summary of the Invention

[0003] The purpose of this invention is to provide a centrifugal atomizing device, a pneumatic spraying device, and a vehicle-mounted spraying system, which have good atomization spraying effect and are suitable for spraying pesticides onto agricultural and forestry crops.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A centrifugal atomizing device includes a centrifugal atomizing disc, a device body, and an outer cover. The device body includes a drive device and a flow guiding device connected to each other. The flow guiding device is used to deliver liquid to the centrifugal atomizing disc. The drive device is connected to the centrifugal atomizing disc and is used to drive the centrifugal atomizing disc to rotate. The outer cover includes a mounting ring and a plurality of partition strips. The mounting ring is sleeved on the outside of the device body and is connected to the device body. The partition strips are all connected to the mounting ring, and the plurality of partition strips surround the outer periphery of the centrifugal atomizing disc.

[0006] Optionally, the mounting ring is rotatably connected to the main body of the device.

[0007] Optionally, the drive device includes a fixed base and a drive shaft. The fixed base, the flow guiding device, and the centrifugal atomizing disk are arranged axially. The fixed base is connected to the flow guiding device, and the drive shaft is connected to the centrifugal atomizing disk. The mounting ring is fitted around the outside of the flow guiding device and is rotatably connected to the flow guiding device.

[0008] Optionally, a connecting rail is provided on the outside of the main body of the device, and the mounting ring is rotatably connected to the connecting rail.

[0009] Optionally, the mounting ring is detachably connected to the main body of the device.

[0010] Optionally, the connecting track includes a first track component and a second track component, wherein the first track component is connected to the main body of the device; and the second track component is detachably connected to the first track component.

[0011] Optionally, the first track member and the second track member are arranged axially spaced apart, and a mounting groove is defined between the first track member and the second track member. The outer periphery of the connecting track forms the opening of the mounting groove. The mounting ring is at least partially inserted into the mounting groove so that the mounting ring is rotatably mounted on the connecting track.

[0012] Optionally, the mounting ring includes a ring body and an annular protrusion disposed on the inner side of the ring body, the annular protrusion being engaged in a mounting groove; a portion of the ring body surrounds the outside of the first track member, and a portion of the ring body surrounds the outside of the second track member.

[0013] Optionally, the connecting track also includes a support portion disposed between the first track member and the second track member; the support portion is located inside the mounting ring; the first track member and the second track member are annular plates, and both the first track member and the second track member are fitted onto the outside of the flow guiding device or the fixing seat.

[0014] Optionally, the outer cover includes a plurality of fan blades surrounding the mounting ring, and the fan blades are connected to the mounting ring; or, the centrifugal atomizing device is provided with a driver, the driver is connected to the mounting ring, and the driver is used to drive the outer cover to rotate.

[0015] Optionally, the flow guiding device is provided with an inlet, a flow guiding cavity and an outlet that are interconnected, with the outlet located on one side of the centrifugal atomizing disc; and / or, the outer cover also includes an outer ring, which surrounds the mounting ring and is connected to the mounting ring, with a number of baffles disposed on one side of the outer ring along the axial direction; one end of the baffle is connected to the outer ring, and the other end extends axially away from the outer ring.

[0016] A wind-driven spraying device includes a centrifugal atomizing device according to any of the above schemes, and also includes a fan and a wind guide hood; the centrifugal atomizing disc, the main body of the device and the fan are arranged along the axial direction, and the fan is used to blow the droplets sprayed by the centrifugal atomizing disc to the target area; the two ends of the wind guide hood are respectively provided with an air inlet and an air outlet, and the end of the wind guide hood with the air inlet is connected to the fan.

[0017] A vehicle-mounted spraying system includes the air-assisted spraying equipment as described above, and also includes a plant protection vehicle; the air-assisted spraying equipment is installed in the plant protection vehicle.

[0018] The beneficial effects of this invention are as follows: This centrifugal atomizing device generates droplets through centrifugal atomization, resulting in more uniform droplets and better atomization effect; the outer cover protects the centrifugal atomizing disc, improving the user experience. This air-assisted spraying equipment generates droplets through centrifugal atomization, which are then blown by a fan to spray the droplets onto the target area, resulting in good spraying effect. This vehicle-mounted spraying system also provides good spraying performance. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the centrifugal atomizing device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0022] Figure 3 This is a cross-sectional view of the centrifugal atomizing device described in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the flow guiding device, connecting track, outer cover, and centrifugal atomizing disc in the centrifugal atomizing device according to an embodiment of the present invention during assembly.

[0024] Figure 5 for Figure 4 Enlarged view of part B in the image;

[0025] Figure 6 This is a cross-sectional schematic diagram of the connecting track in the centrifugal atomizing device according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the flow guiding device, connecting track, and outer cover in the centrifugal atomizing device according to an embodiment of the present invention when they are in a disassembled state.

[0027] Figure 8 for Figure 7 Enlarged view of section C in the image;

[0028] Figure 9 This is a schematic diagram of the flow guiding device, connecting track, outer cover, and centrifugal atomizing disk in the centrifugal atomizing device according to an embodiment of the present invention when they are in disassembled state (the connecting track is in the assembled state in the figure);

[0029] Figure 10 for Figure 9 Enlarged view of part D in the image;

[0030] Figure 11 This is a schematic diagram of the flow guiding device, connecting track, outer cover, and centrifugal atomizing disk in the centrifugal atomizing device according to an embodiment of the present invention when they are in disassembled state (the connecting track is in the assembled state in the figure);

[0031] Figure 12 for Figure 11 Enlarged view of part E in the image;

[0032] Figure 13 This is one of the structural schematic diagrams of the air-assisted spraying device according to one embodiment of the present invention;

[0033] Figure 14 This is a second schematic diagram of the structure of the air-assisted spraying device according to one embodiment of the present invention (the bolded dotted line in the figure is used to indicate the direction of droplet flow);

[0034] Figure 15 This is a schematic diagram of the working scenario of the vehicle-mounted spraying system according to an embodiment of the present invention (the droplet diagram is omitted in the figure);

[0035] Figure 16This is a schematic diagram of the structure of the fan-bladed outer cover according to an embodiment of the present invention;

[0036] Figure 17 This is a front view of the centrifugal atomizing spraying device described in an embodiment of the present invention;

[0037] Figure 18 This is a diagram showing the distribution of various areas of the centrifugal atomizing spraying device described in this embodiment of the invention, viewed from the front.

[0038] In the diagram: 10. Centrifugal atomizing disc; 11. Disc body; 1101. Atomizing surface; 12. Atomizing protrusion; 1201. Atomizing flow channel; 20. Flow guiding device; 21. Liquid inlet; 22. Flow guiding cavity; 23. Liquid outlet; 24. Mounting platform; 30. Drive device; 31. Fixing base; 32. Drive shaft; 40. Outer cover; 41. Mounting ring; 411. Ring body; 4111. First mating surface; 4112. Second mating surface; 412. Annular protrusion; 42. Spacer strip; 4201. Through channel; 421. Tip; 43, Outer ring; 44, Fan blade; 61, Fan; 62, Air guide cover; 6201, First expansion air duct; 6202, Second expansion air duct; 621, Air guide shell; 622, First tongue; 623, Second tongue; 70, Connecting rail; 701, Mounting groove; 71, First rail component; 711, First limiting surface; 72, Second rail component; 721, Second limiting surface; 73, Support part; 80, Mounting seat; 90, Main body of device; 100, Air-assisted spraying equipment; 200, Plant protection vehicle. Detailed Implementation

[0039] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] Spraying equipment has a wide range of applications, such as in agricultural and forestry plant protection, where pesticides and growth regulators are sprayed onto target areas; and in pest control, where disinfectants are sprayed onto target areas. However, the spraying equipment in these technologies has the following problems: First, most spraying methods use pressure atomization, employing compressed air as power to break the liquid into fine droplets that are then sprayed through nozzles. However, this results in uneven droplet size, with both large and small droplets present. Larger droplets may not effectively adhere to the target surface, leading to poor atomization and spraying effects. Furthermore, the spraying efficiency is low; for large-area spraying needs, it is generally necessary to extend the operation time using a single nozzle or increase the number of nozzles.

[0043] Secondly, in the field of plant protection, automatic spraying technology is mostly achieved by drones carrying spray nozzles. When spraying pesticides or growth solutions on some crops, it is difficult for the pesticide solution to reach certain areas of the crop.

[0044] Therefore, this application provides a centrifugal atomizing device that uses a high-speed rotating centrifugal atomizing disc to generate centrifugal force, which propels the liquid outward. During this process, the liquid is dispersed and atomized into fine droplets, which are then sprayed out of the centrifugal atomizing disc. Compared to pressure atomization, centrifugal atomization produces more uniform droplets and achieves better atomization, making it suitable for agricultural and forestry plant protection pesticide spraying. This centrifugal atomizing device can be used in conjunction with a fan for even better spraying results.

[0045] The outer cover of the centrifugal atomizing device of this application has a protective function. The outer cover can be rotated, which helps to improve or avoid the accumulation of large droplets on the baffle strip. The outer cover can be removed for easy replacement.

[0046] This application also provides a wind-driven spraying device that uses centrifugal atomization to generate droplets, which are then sprayed onto the target area by a blower. Firstly, the droplet uniformity is better, ensuring that most of the pesticide droplets adhere better to the crop surface when spraying pesticides, resulting in excellent spraying performance. Secondly, the blower accurately delivers the centrifugally ejected droplets to the target area, covering a large area with good spraying effect and high efficiency. This centrifugal atomizing spraying device can be installed on mobile plant protection equipment, such as unmanned vehicles or drones, or it can be fixed in the environment; handheld use is also possible.

[0047] This application also provides a vehicle-mounted spraying system, in which a wind-assisted spraying device is mounted on the body of a plant protection vehicle. This plant protection vehicle can travel in fields, orchards, vegetable gardens and other plots, spraying pesticides onto crop plants from the side, with good spraying effect and high spraying efficiency.

[0048] It should be noted that, in the accompanying drawings of this application, in order to facilitate the description of the relative positions between the various components inside the centrifugal atomizing device and the centrifugal atomizing spraying equipment, the y-direction and x-direction are marked in the drawings. The y-axis direction is consistent with the central axis of the centrifugal atomizing spraying device and the central axis of the centrifugal atomizing spraying equipment, and the x-direction is one of the radial directions. Figures 1 to 12 The diagram illustrates a partial or overall structure of the centrifugal atomizing device. Figure 13 , Figure 14 The diagram illustrates the structure of the pneumatic spraying equipment. Figure 15 The diagram illustrates the structure of the vehicle-mounted spraying system.

[0049] Please refer to Figures 1 to 12 The centrifugal atomizing device includes a main body 90, a centrifugal atomizing disc 10, and an outer cover 40.

[0050] The main body 90 of the device includes a flow guiding device 20 and a driving device 30. The flow guiding device 20 is used to deliver liquid to the centrifugal atomizing disk 10. The driving device 30 includes a fixed base 31 and a driving shaft 32. The fixed base 31 of the driving device 30 is connected to and relatively fixed to the flow guiding device 20, and the driving shaft 32 is connected to the centrifugal atomizing disk 10. The central axis of the centrifugal atomizing disk 10 is a first axis, and the driving device 30 is used to drive the centrifugal atomizing disk 10 to rotate around the first axis.

[0051] The centrifugal atomizing disk 10 is provided with a plurality of atomizing channels 1201 distributed around its first axis. The flow guiding device 20 is used to connect to the liquid supply device and to transport the liquid from the liquid supply device to the centrifugal atomizing disk 10 so that the liquid can enter the plurality of atomizing channels 1201. The driving device 30 can be, but is not limited to, a motor. By driving the centrifugal atomizing disk 10 to rotate, the liquid can be centrifugally thrown out, so that the atomized droplets are sprayed out around the centrifugal atomizing disk 10.

[0052] The outer cover 40 includes a mounting ring 41 and several partition strips 42. The mounting ring 41 is fitted around the outside of the device body 90 and is detachably and rotatably connected to the device body 90. The partition strips 42 are all connected to the mounting ring 41. Several partition strips 42 surround the outer periphery of the centrifugal atomizing disk 10 and are spaced apart from each other.

[0053] The centrifugal atomizing device of this application generates centrifugal force through a high-speed rotating centrifugal atomizing disk 10, and uses centrifugal force to throw out the liquid. During the process of throwing out the liquid, the liquid is dispersed and atomized into fine liquid particles, and then atomized liquid droplets are sprayed out of the centrifugal atomizing disk 10.

[0054] Compared to pressure atomization, centrifugal atomization offers superior atomization results and is suitable for agricultural and forestry plant protection pesticide spraying. The centrifugal atomization device described in this application exhibits excellent atomization performance in several ways: First, it disperses liquid into smaller droplets with more uniform droplet size, preventing some droplets from being too large and others too small. Second, it offers strong adjustability, allowing for control of droplet size and spray volume by adjusting parameters such as rotation speed and liquid flow rate, meeting diverse operational needs and achieving precise atomization control. Third, by cooperating with the fan 61, the centrifugal atomization device can deliver droplets to the target area via airflow, resulting in a wider spray coverage, more even coverage of the target area, and improved spraying efficiency and effect. Fourth, compared to pressure nozzles, the flow channels inside the centrifugal atomization disc 10 are less prone to clogging.

[0055] The outer cover 40 of the centrifugal atomizing device of this application has baffles 42 to protect the centrifugal atomizing disc 10. The outer cover 40 is rotatable to improve or prevent the accumulation of droplets on the baffles 42. The outer cover 40 is also removable for easy replacement. When the centrifugal atomizing device is used in a pneumatic spraying equipment, the rotatability of the outer cover 40 can reduce or prevent the accumulation of droplets on the baffles 42, thereby reducing the occurrence of droplets being drawn back onto the baffles 42 and making the fog field delivered by the wind more stable.

[0056] The outer cover 40 provides protection: its several baffles 42 protect the high-speed rotating centrifugal atomizing disc 10, protect crops from damage by the disc, and protect personnel from injury caused by a broken disc. This addresses the problem of the centrifugal atomizing disc 10 being directly exposed. For example, if corn leaves or other leaves or foreign objects accidentally extend into the vicinity of the centrifugal atomizing disc 10, they will be blocked by the baffles 42 surrounding it. The baffles 42 of the outer cover 40 prevent leaves and other foreign objects from approaching the disc. When the centrifugal atomizing disc 10 is rotating, the baffles 42 prevent leaves and other foreign objects from being drawn into it, thus preventing damage to the disc or crops. When the centrifugal atomizing disc 10 is in standby mode, the baffles 42 prevent leaves and other foreign objects from scratching or damaging the disc. It is understandable that the adjacent baffles 42 are spaced apart from each other, and a passage 4201 is formed between the adjacent baffles 42. The passage 4201 allows the atomized droplets thrown out by the centrifugal atomizing disc 10 to pass through. The setting of the outer cover 40 does not affect the function of the centrifugal atomizing disc 10 to throw out atomized droplets.

[0057] In one embodiment, to achieve better spraying effect, the centrifugal atomizing device is configured such that, when the centrifugal atomizing device is in the atomizing spraying working state, the rotation axis of the centrifugal atomizing disk 10 is parallel to the horizontal plane or the angle between the rotation axis and the horizontal plane is less than 30 degrees. That is, the axial direction of the centrifugal atomizing device is arranged in an approximately horizontal direction, and the rotation plane of the centrifugal atomizing disk 10 is set approximately along a vertical plane perpendicular to the horizontal plane.

[0058] The inventors discovered that when an outer cover 40 is provided in the centrifugal atomizing device, during operation, the centrifugal atomizing disc 10 rotates to spin and eject atomized droplets, and some droplets may settle on the baffle 42. These settled droplets are those that were not sprayed out and remain nearby. If the outer cover 40 is fixed in position during atomization, in the case of a centrifugal atomizing device mounted on a drone, where the device typically sprays from above the crop, the baffle 42 extends downwards as the drone sprays the pesticide. Large droplets are less likely to accumulate on the baffle 42, or the accumulated large droplets will drip down to the ground under their own weight. However, when centrifugal atomizing devices are installed on unmanned vehicles, they typically spray pesticides onto crops from the side (e.g., left or right). In many cases, the axis of the centrifugal atomizing disc 10 is parallel to the ground plane (e.g., when spraying horizontally to the left), or the axis of the centrifugal atomizing disc 10 is at an angle to the ground plane (e.g., when spraying towards the upper left or lower left). Thus, the baffle strip 42 is mostly parallel to the ground plane or at an angle within a certain degree. In this case, some droplets may accumulate on the baffle strip 42, forming sediment. The sedimented droplets accumulated on the baffle strip 42 may cause one or more of the following problems: First, the sedimented droplets on the baffle strip 42 are visible to the user, making them feel that these droplets are not being blown away, resulting in a waste and affecting the user experience. Second, if the droplets only fall after the centrifugal atomizing device has stopped working, they may drip onto the vehicle body, contaminating it. Third, in some cases, these droplets accumulated on the baffle strip 42 may be drawn back, and the drawn-back droplets may contaminate other structural components.

[0059] In the centrifugal atomizing spraying device 100 of this application, while a plurality of baffles 42 of the outer cover 40 surround the centrifugal atomizing disk 1010, the outer cover 40 is configured to be rotatably installed on the main body 90 of the device. This can reduce the liquid settling on the baffles 42, avoid or reduce the accumulation of large droplets on the baffles 42, and prevent the user from seeing large droplets deposited on the outer cover 40.

[0060] In addition, the outer cover 40 of this application is detachable, making it convenient to replace worn or damaged outer cover 40, or to change the model of outer cover 40 according to different needs. Among them, the density of the partition strips 42 or the length of the partition strips 42 are different for different models of outer cover 40.

[0061] When installing the outer cover 40, the mounting ring 41 of the outer cover 40 can be sleeved on the outside of the guide device 20 or the fixing seat 31 of the drive device 30. While enabling the outer cover 40 to be rotatably installed: First, the outer cover 40 does not occupy the space between the guide device 20 and the centrifugal atomizing disk 10, and does not affect the cooperation between the guide device 20 and the centrifugal atomizing disk 10; Second, the contact area between the outer cover 40 and the guide device 20, or between the outer cover 40 and the fixing seat 31 of the drive device 30, is large, the connection is more stable, the outer cover 40 has a good protective effect on the centrifugal atomizing disk 10, and the outer cover 40 is not easy to shake.

[0062] In one embodiment, the drive device 30 includes a fixed base 31 and a drive shaft 32. The fixed base 31, the flow guiding device 20, and the centrifugal atomizing disk 10 of the drive device 30 are arranged axially. The fixed base 31 is connected to the flow guiding device 20, and the drive shaft 32 is connected to the centrifugal atomizing disk 10. Exemplarily, the drive device 30 is a motor, the fixed base 31 is a motor base, and the drive shaft 32 is a motor shaft. Other structures of the motor (such as a stator and rotor) are arranged inside the motor base.

[0063] Optionally, the mounting ring 41 is fitted onto the outside of the flow guiding device 20, and the mounting ring 41 is rotatably connected to the flow guiding device 20. Fitting the mounting ring 41 onto the flow guiding device 20 brings the mounting ring 41 closer to the centrifugal atomizing disc 10, making it easier for the baffle strip 42 to surround the outside of the centrifugal atomizing disc 10. This results in a smaller volume and weight for the outer cover 40, and makes it easier for the outer cover 40 to rotate during spraying operations.

[0064] In one embodiment, a connecting rail 70 is provided on the outside of the device body 90, and a mounting ring 41 is rotatably mounted on the connecting rail 70 so that the outer cover 40 is rotatably connected to the device body 90 through the mounting ring 41. By configuring the connecting rail 70, on the one hand, it enables the outer cover 40 to be rotatably mounted and prevents the outer cover 40 from detaching from the device body 90; on the other hand, the connecting rail 70 plays a role in axially limiting and positioning the mounting ring 41. When an external force causes the outer cover 40 to rotate, the mounting ring 41 can rotate around the device body 90 along a predetermined trajectory. The rotation of the outer cover 40 is stable and not prone to shaking. The baffle strip 42 of the outer cover 40 can perform secondary atomization on the droplets ejected from the centrifugal atomizing disc 10. The baffle strip 42 can also block and slow down the droplets ejected from the centrifugal atomizing disc 10, making the droplets easier to control by the wind field.

[0065] Optionally, the connecting track 70 has a first limiting surface 711 facing the centrifugal atomizing disk 10 and a second limiting surface 721 facing away from the centrifugal atomizing disk 10. The first limiting surface 711 engages with the mounting ring 41, restricting the mounting ring 41 from moving away from the centrifugal atomizing disk 10. The second limiting surface 721 engages with the mounting ring 41, restricting the mounting ring 41 from moving towards the centrifugal atomizing disk 10. Through the engagement of the first limiting surface 711 and the second limiting surface 721, the mounting ring 41 is confined within a certain axial space. When the outer cover 40 rotates, the outer cover 40 rotates stably along a certain trajectory in the engagement direction of the two limiting surfaces.

[0066] Optionally, an annular mounting groove 701 is provided on the outer side of the connecting track 70. The groove opening of the mounting groove 701 is located on the outer periphery of the connecting track 70, and the two sidewalls of the mounting groove 701 serve as a first limiting surface 711 and a second limiting surface 721. Alternatively, a protrusion is provided on the outer side of the connecting track 70. The side of the protrusion facing away from the centrifugal atomizing disk 10 serves as the second limiting surface 721, and the side closer to the centrifugal atomizing disk 10 serves as the first limiting surface 711.

[0067] In one embodiment, a connecting rail 70 is provided on the outside of the flow guiding device 20, and a mounting ring 41 is sleeved on the outer periphery of the flow guiding device 20 and mounted on the connecting rail 70.

[0068] In one embodiment, when a connecting rail 70 is provided on the outside of the device body 90, the assembly between the mounting ring 41 and the device body 90 is achieved in the following manner:

[0069] Reference Figures 5 to 8 , Figure 10 , Figure 12 The connecting track 70 includes a first track component 71 and a second track component 72. The first track component 71 is connected to the device body 90, and the first track component 71 and the device body 90 can be a separate structure or an integral structure. The second track component 72 is detachably connected to the first track component 71. When the second track component 72 is assembled with the first track component 71, it cooperates with the first track component 71 to axially limit the mounting ring 41, preventing the mounting ring 41 from detaching from the device body 90, and enabling the mounting ring 41 to be detachably and rotatably mounted on the device body 90 via the connecting track 70. When the second track component 72 is detached from the first track component 71, the mounting ring 41 can be installed to the device body 90 from the outside, or the mounting ring 41 can be removed from the device body 90.

[0070] Figures 3 to 5The diagram illustrates that a connecting rail 70 is provided on the outer periphery of the flow guiding device 20, and the mounting ring 41 is rotatably connected to the connecting rail 70. Taking the connecting rail 70 being located outside the flow guiding device 20 as an example, the mounting ring 41 can be installed as follows: the first rail component 71 is installed on the outer periphery of the flow guiding device 20, then the mounting ring 41 is fitted onto the outside of the flow guiding device 20, and then the second rail component 72 is installed on the outer periphery of the flow guiding device 20. The second rail component 72 is then connected to the first rail component 71 by means of screw fastening, etc., thus completing the axial limiting of the mounting ring 41 and realizing the rotatable installation of the mounting ring 41.

[0071] In other embodiments, the centrifugal atomizing device can be configured to install the mounting ring 41 as follows: the mounting ring 41 is an elastic structure capable of certain deformation (not shown in the figure). When installing the outer cover 40, the mounting ring 41 is pulled to deform it and allow it to be fitted onto the outside of the device body 90; when it is necessary to remove the mounting ring 41, it is pulled to deform it and detach it from the device body 90. Alternatively, the main body structure of the flow guiding device 20 includes two detachable components to achieve a detachable connection between the mounting ring 41 and the flow guiding device 20. Furthermore, the mounting ring 41 includes two detachable components to achieve a detachable connection between the mounting ring 41 and the flow guiding device 20.

[0072] Understandably, configuring the connecting track 70 to include at least two detachable track components not only allows for the rotatable and detachable installation of the mounting ring 41, but also eliminates the need for the mounting ring 41 to possess elasticity for deformation, nor does it require it to be configured as multiple separate components. The mounting ring 41 can be configured as a one-piece molded structure, making it less prone to deformation, with higher structural strength. The mounting ring 41 is less likely to detach from the main body 90 of the device, reducing the likelihood of loosening and damage to the outer cover 40, resulting in a longer lifespan. The high structural strength of the outer cover 40 ensures reliable protection of the centrifugal atomizing disc 10. Similarly, it is unnecessary to configure the flow guiding device 20 as multiple separate components, avoiding the possibility of leakage from the flow guiding device 20 by configuring it as two or more separate components.

[0073] In one embodiment, reference is made to Figures 5 to 12When the connecting track 70 includes a detachably connected first track member 71 and a second track member 72: the first track member 71 and the second track member 72 are spaced apart axially. When the first track member 71 and the second track member 72 are in an assembled state, a mounting groove 701 is defined between them. The outer periphery of the connecting track 70 forms the opening of the mounting groove 701. The mounting ring 41 is at least partially inserted into the mounting groove 701 through the opening on the outer periphery of the connecting track 70, so that the mounting ring 41 is rotatably mounted on the connecting track 70, thereby realizing the rotatable mounting of the outer cover 40. By spaced apart axially by the first track member and the second track member, the detachable and rotatable mounting of the mounting ring 41 can be achieved simply by installing the first track member, the mounting ring 41, and the second track member sequentially axially. The installation steps are simple.

[0074] Optionally, refer to Figures 6 to 10 The first track component 71 is the first track plate, the second track component 72 is the second track plate, the aforementioned first limiting surface 711 is located on the side of the first track plate close to the second track plate, the aforementioned second limiting surface 721 is located on the side of the second track plate close to the first track plate, and the mounting ring 41 is at least partially located between the first limiting surface 711 and the second limiting surface 721.

[0075] Optionally, both the first track member 71 and the second track member 72 are annular structures arranged around the first axis, and the mounting groove 701 is an annular groove. In another embodiment, the connecting track 70 includes an annular first track member 71 and a plurality of arc-shaped second track members 72, the plurality of arc-shaped track members being arranged at intervals along the circumferential direction. In another embodiment, the connecting track 70 includes one or more arc-shaped first track members 71 and one or more arc-shaped second track members 72.

[0076] In other embodiments, when the connection track 70 is provided outside the device body 90 and the first track member 71 and the second track member 72 are detachably connected, and the figure is not shown, the connection track 70 can be configured in the following manner: The first track member 71 and the second track member 72 are arranged radially. When the second track member 72 and the first track member 71 are in an assembled state, the first track member 71 and the second track member 72 form an annular structure. When installing the mounting ring 41, first put the mounting ring 41 on the outside of the device body 90, then snap the first track member 71 onto the outside of the device body 90 from left to right, and then snap the second track member 72 onto the outside of the device body 90 from right to left, connect the first track member 71 to the device body 90, connect the second track member 72 to the first track member 71. The first track member 71 is provided with a convex portion, and the second track member 72 is provided with a convex portion. Both the first track member 71 and the second track member 72 are snapped into the annular groove on the outer periphery of the mounting ring 41 through the convex portions, so that the mounting ring 41 is detachably and rotatably mounted on the device body 90 through the connection track 70.

[0077] For the convenience of understanding, in the following embodiments, the example where the first track member 71 and the second track member 72 are arranged at an axial interval will be continued to be described.

[0078] Optionally, referring to Figure 5 、 Figure 8 , the cross-section of the mounting ring 41 is similar to a "mountain" - shaped structure. The mounting ring 41 includes a ring body 411 and an annular protrusion 412 provided on the inner side of the ring body 411. The annular protrusion 412 is snapped into the mounting groove 701; a part of the ring body 411 surrounds the outside of the first track member 71, a part surrounds the outside of the mounting groove 701, and another part surrounds the outside of the second track member 72. In other words, the axial dimension of the mounting ring 41 is greater than the axial dimension of the mounting groove 701. The inner wall of the ring body 411 includes a first mating surface 4111 and a second mating surface 4112. The two sides of the annular protrusion 412 in the axial direction are respectively connected to the first mating surface 4111 and the second mating surface 4112. The first mating surface 4111 surrounds the outer periphery of the first track member 71, and the first mating surface 4111 is used for radial limiting fit with the first track member 71. The second mating surface 4112 surrounds the outer periphery of the second track member 72, and the second mating surface 4112 is used for radial limiting fit with the second track member 72.

[0079] Referring to Figure 5The x-direction is the radial direction of the outer cover 40. When the first track component 71 and the second track component 72 are detachably connected axially, the service life of the outer cover 40 can be extended. The inventors discovered that if the mounting ring 41 is enlarged and fitted onto the connecting track 70, with the annular protrusion 412 of the mounting ring 41 engaging the mounting groove 701 of the connecting track 70, it becomes difficult to fit the mounting ring 41 onto the connecting track 70. The radial dimension of the annular protrusion 412 needs to be correspondingly reduced to facilitate fitting the mounting ring 41 by temporarily deforming it through enlargement. However, the inventors also discovered that during the rotation of the outer cover 40, the annular protrusion 412 will wear down. When the wear reaches a certain level, the annular protrusion 412 will dislodge from the mounting groove 701 of the connecting track 70. If the size of the annular protrusion 412 is small, the mounting ring 41 will detach from the connecting track 70 after a certain period of use, at which point the outer cover 40 needs to be replaced, and the user will need to replace the parts. The inventors faced a dilemma: the lifespan of the outer cover 40 conflicted with the difficulty of its installation. In this embodiment, the first track component 71 and the second track component 72 are detachably connected axially. When installing the mounting ring 41 onto the connecting track 70, it is not necessary to deform the mounting ring 41. This overcomes the installation difficulty of fitting the mounting ring 41 onto the connecting track 70 when the radial dimension of the annular protrusion 412 is too large. Based on this, with the connecting track 70 detachable axially, the radial dimension of the annular protrusion 412 on the inner side of the ring body 411 can be appropriately increased as needed. The larger the radial dimension of the annular protrusion 412, the longer the lifespan of the outer cover 40. Therefore, this embodiment is beneficial for extending the lifespan of the outer cover 40, and users do not need to frequently replace the outer cover 40 parts, resulting in a better user experience.

[0080] It should be noted that even if the mounting ring 41 includes the ring body 411 but does not include the annular protrusion 412, in the case that "the connecting rail 70 includes a first rail member 71 and a second rail member 72 that are detachably arranged along the axial direction, and the connecting rail 70 is provided with a mounting groove 701 on the outer side, and the mounting ring 41 is at least partially installed in the mounting groove 701", the radial dimension of the portion of the mounting ring 41 inserted into the mounting groove 701 can be increased, thereby helping to improve the service life of the outer cover 40.

[0081] It is understandable that when the centrifugal atomizing device is used in conjunction with the fan 61 on the agricultural protection vehicle 200, such as Figure 15 , Figure 14As illustrated, the outer cover 40 is vertical or approximately vertical relative to the ground. In this case, the engagement between the first mating surface 4111 and the first track component 71, and the second mating surface 4112 and the second track component 72, allows the track components to support the mating surfaces, thus providing support for the outer cover 40, enhancing its stability, and reducing vibration. Due to terrain undulations, the plant protection vehicle 200 may experience vertical vibrations. The limiting engagement between the first mating surface 4111 and the second mating surface 4112 and the connecting track 70 allows for more stable rotation of the outer cover 40, ensuring that the central axis of the outer cover 40 remains collinear or horizontal with the central axis of the centrifugal atomizing disc 10, minimizing the risk of the outer cover 40 flipping. It is also understandable that when the centrifugal atomizing device is used in conjunction with the fan 61, an airflow will be blown roughly axially to the outer cover 40. Through the limiting cooperation between the first mating surface 4111 and the second mating surface 4112 and the connecting rail 70, it is also beneficial to make the mounting ring 41 have the ability to resist the wind force and not easily undergo torsional deformation under the action of wind, so that the mounting ring 41 can rotate stably.

[0082] In other embodiments, the mounting ring 41 may also be a circular annular structure without protrusions on the inner side, and the mounting ring 41 may be directly assembled into the mounting groove 701, with the mounting ring 41 having no misalignment with the outer peripheral surfaces of the first track member 71 and the second track member 72.

[0083] In some embodiments, both the first limiting surface 711 and the second limiting surface 721 are provided with protruding rolling elements. These rolling elements are rotatable relative to the ring body 411, and the mounting ring 41 abuts against the outer peripheral surfaces of the first track member 71 and the second track member 72 via the rolling elements. This allows for smoother rotation of the mounting ring 41. When the outer cover 40 is equipped with fan blades 44 and rotates using airflow blown by the fan 61, the rolling elements make it easier for the airflow to rotate the outer cover 40. Optionally, the rolling elements are ball bearings rolled and mounted on the inner wall of the ring body 411. Optionally, the rolling elements are elastic ball bearings, providing a shock-absorbing effect.

[0084] In one embodiment, reference is made to Figures 5 to 7 , Figure 11 , Figure 12 The connecting track 70 also includes a support part 73, which is disposed between the first track member 71 and the second track member 72. The support part 73 is located inside the mounting ring 41. The first track member 71 and the second track member 72 are annular plates, and both the first track member 71 and the second track member 72 are fitted onto the outside of the flow guiding device 20 or the fixing seat 31.

[0085] Optionally, the support portion 73 is disposed on the side of the first track member 71 near the second track member 72, and the support portion 73 is integrally formed and connected to the first track member 71. For example, during assembly, after the first track member 71 and the mounting ring 41 are fitted onto the outside of the flow guide device 20, the second track member 72 is then fitted onto the outside of the flow guide device 20. When the support portion 73 abuts against the second track member 72, the second track member 72 is in place. At this time, the second track member 72 can be connected and fixed to the first track member 71 by means of screws or other methods, completing the rotatable installation of the mounting ring 41. Optionally, the support portion 73 can be an annular support plate, an arc-shaped support plate, or a support column. One or more support portions 73 are provided between the first track member 71 and the second track member 72, spaced apart around the central axis.

[0086] Optionally, refer to Figure 10 , Figure 11 The first track component 71, the support part 73 and the second track component 72 are all provided with axially through mounting holes to provide screw fastening positions, thereby realizing the locking fit between the first track component 71 and the second track component 72.

[0087] In one embodiment, reference is made to Figure 9 , Figure 11 Multiple mounting platforms 24 are spaced around the outer periphery of the flow guiding device 20 along the first axis. The mounting platforms 24 provide a support surface on the side near the centrifugal atomizing disk 10. The side of the first track component 71 facing away from the centrifugal atomizing disk 10 abuts against the support surface of the mounting platform 24. The second track component 72 is located on the side of the first track component 71 facing away from the mounting platform 24 and near the centrifugal atomizing disk 10. It can be understood that the end of the flow guiding device 20 near the centrifugal atomizing disk 10 is the front end of the flow guiding device 20. The outer periphery of the front end of the flow guiding device 20 is smaller than the outer periphery of its rear end, facilitating the flow of liquid to the centrifugal atomizing disk 10. In this embodiment, the first track component 71, the mounting ring 41, and the second track component 72 are sequentially fitted onto the flow guiding device 20 from the front end.

[0088] In one embodiment, with the outer cover 40 rotatably mounted, the outer cover 40 in the centrifugal atomizing device and the air-assisted spraying equipment is configured such that, when the centrifugal atomizing device is in operation, the rotation direction of the outer cover 40 is opposite to the rotation direction of the centrifugal atomizing disk 10. That is, the centrifugal atomizing disk 10 rotates around a first direction to spray atomized droplets outward, and the outer cover 40 rotates around a second direction, with the first direction and the second direction being opposite. For example, the first direction is clockwise and the second direction is counterclockwise, or vice versa. It can be understood that when the centrifugal atomizing device is working, the outer cover 40 and the centrifugal atomizing disk 10 rotate in opposite directions. When the droplets ejected by the centrifugal atomizing disk 10 hit the baffle 42, due to the counterclockwise rotation of the outer cover 40, the baffle 42 has a movement tendency opposite to that of the droplets, making it easier for the droplets to leave the baffle 42.

[0089] When the centrifugal atomizing device is working, the outer cover 40 rotates in the opposite direction to the centrifugal atomizing disk 10, which can bring at least one of the following effects: First, the movement trend of the centrifugally ejected droplets is opposite to the rotation trend of the baffle 42, making it easier for the droplets to leave the baffle 42; Second, the baffle 42 of the outer cover 40, which rotates in the opposite direction, can reduce the speed of the centrifugally ejected droplets, making it easier for the droplets to be controlled by the airflow blown by the fan 61, so that the atomized droplets can be stably blown to the target area by the fan 61, making the fog field more stable; Third, the baffle 42 has a good re-atomization effect on the droplets. Optionally, when the centrifugal atomizing device is in working condition, the rotation direction of the outer cover 40 is opposite to the rotation direction of the centrifugal atomizing disk 10, and the rotational speed of the outer cover 40 is lower than that of the centrifugal atomizing disk 10.

[0090] The following are several ways to rotate the outer cover 40°. One way to rotate the outer cover 40°: Refer to... Figure 16 The outer casing 40 includes a mounting ring 41 and several fan blades 44. The mounting ring 41 is rotatably connected to the device body 90. For example, the mounting ring 41 is rotatably connected to the flow guide device 20, and the several fan blades 44 surround the mounting ring 41. Thus, when the centrifugal atomizing device is applied in a wind-driven spraying device with a fan 61, the outer casing 40 can be driven to rotate by the air blown by the fan 61. A second method of rotating the outer casing 40: The centrifugal atomizing device includes a driver for driving the outer casing 40 to rotate. The driver can be, but is not limited to, a motor. Optionally, the outer casing 40 also includes ribs and connecting columns. The connecting columns are located at the central axis of the outer casing 40 and are connected to the mounting ring 41 via the ribs. The connecting columns are also connected to the motor shaft.

[0091] In other embodiments, when the centrifugal atomizing device is in operation, the outer cover 40 can also rotate in the same direction as the centrifugal atomizing disk 10 under conditions such as motor drive, wind blowing, or droplet impact. The rotation speed of the outer cover 40 is lower than that of the centrifugal atomizing disk 10. Although the effect of rotating the outer cover 40 in the same direction is not as good as that of rotating the outer cover 40 in the opposite direction, it is still beneficial to reduce the accumulation of droplets on the baffle strip 42 compared to the case where the outer cover 40 is fixed, thereby improving the situation where droplets on the baffle strip 42 are drawn back.

[0092] In one embodiment, the outer cover 40 includes an outer ring 43 surrounding the mounting ring 41. The outer ring 43 is connected to the mounting ring 41 by multiple connecting ribs. Several spacer bars 42 are disposed on one side of the outer ring 43 along its axial direction and are connected to the outer ring 43. In this embodiment, the outer ring 43 is provided so that all the spacer bars 42 are connected to the same outer ring 43, forming a cover surrounding the centrifugal atomizing disk 10. The outer ring 43 is then connected to the mounting ring 41 by connecting ribs, resulting in a simple and stable structure.

[0093] In one embodiment, the centrifugal atomizing disc 10 includes a disc body 11 and at least one set of atomizing groups. The disc body 11 has an atomizing surface 1101, and the atomizing groups are disposed on the atomizing surface 1101. Each atomizing group includes atomizing protrusions 12 spaced apart around the center line of the disc body 11, and an atomizing flow channel 1201 is formed between adjacent atomizing protrusions 12. Exemplarily, the side of the disc body 11 close to the flow guiding device 20 is the atomizing surface 1101. The atomizing surface 1101 is arranged with three rings / three sets of atomizing groups from the inside to the outside. The atomizing protrusions 12 of the first atomizing group are strip-shaped protrusions that extend spirally from the inside to the outside. The atomizing protrusions 12 of the second atomizing group are columnar protrusions. The atomizing protrusions 12 of the third atomizing group are atomizing teeth. The liquid is dispersed multiple times after passing through multiple sets of atomizing groups, resulting in a good atomization effect.

[0094] In one embodiment, the flow guiding device 20 is used to deliver liquid to the side of the centrifugal atomizing disk 10 where the atomizing group is provided, so that the liquid can enter a plurality of atomizing channels 1201. Exemplarily, the flow guiding device 20 consists of a flow guiding shell and a flow guiding tube. A flow guiding cavity 22 is formed inside the flow guiding shell. The flow guiding tube is connected to the flow guiding shell and has an inlet 21. An outlet 23 is provided on the side of the flow guiding shell near the centrifugal atomizing disk 10. The inlet 21 communicates with the outlet 23 through the flow guiding cavity 22. The inlet 21 is used to connect to a liquid supply device (e.g., a liquid storage tank). Under the action of a pump or other force, liquid is delivered from the liquid supply device to the flow guiding cavity 22 and from the outlet 23 to the centrifugal atomizing disk 10, so that the liquid enters a plurality of atomizing channels 1201. Optionally, the mounting ring 41 of the outer cover 40 is sleeved on the outside of the flow guiding shell.

[0095] In one embodiment, reference is made to Figure 2The baffle 42 has atomizing teeth, and its inner side has a tip 421. The inner side of the baffle 42 refers to the side of the baffle 42 that is close to the centrifugal atomizing disk 10 and the side that is close to the central axis of the outer cover 40. The tip 421 is used to disperse droplets. When droplets ejected by the centrifugal atomizing disk 10 come into contact with the tip 421 of the baffle 42, the droplets are dispersed again by the tip 421 of the baffle 42, thus achieving the effect of re-atomization of the droplets.

[0096] Please refer to Figures 13 to 15 The following describes the pneumatic spraying device 100 of this application. The pneumatic spraying device includes the aforementioned centrifugal atomizing device, as well as a blower 61 and an air guide shroud 62.

[0097] The centrifugal atomizing disc 10, the main body 90, and the fan 61 are arranged axially. Exemplarily, the fan 61, the main body of the drive device 30, the guide device 20, and the centrifugal atomizing disc 10 are arranged axially from rear to front. The centrifugal atomizing device is used to atomize the liquid to be sprayed through the centrifugal atomizing disc 10, and to spray the atomized liquid approximately radially along the air-assisted spraying device through the centrifugal atomizing disc 10. The spray effect of the centrifugal atomizing disc 10 is similar to that shown in the figure (the bold dashed lines in the figure are only used to provide a droplet path illustration and cannot be considered the sole limitation of this application). The fan 61 is located axially rear of the centrifugal atomizing disc 10, and the fan 61 is used to blow the droplets sprayed from the centrifugal atomizing disc 10 towards the target area.

[0098] Reference Figure 13 , Figure 14 The air guide shroud 62 has an air inlet and an air outlet (illustrated but not marked in the figure) at its two axial ends. The end of the air guide shroud 62 with the air inlet is connected to the fan 61. Through its specific design shape, the air guide shroud 62 can guide the surrounding airflow along a predetermined path. When used in conjunction with the fan 61, the air guide shroud 62 can more accurately deliver the mist droplets to the target area under the action of wind, reducing mist droplet dispersion and waste, and reducing the power requirements of the fan 61.

[0099] This air-assisted spraying equipment uses a centrifugal atomizing disc 10 in conjunction with a blower 61 to spray pesticides. Compared with conventional pressure atomization spraying, it has better atomization and spraying effects. Specifically:

[0100] First, it produces finer atomized droplets. These fine droplets, combined with wind propulsion, penetrate deeper into the crop canopy, covering more leaves and fruit surfaces, thus improving pesticide utilization and control efficacy. Second, centrifugal atomizing sprayers can control the rotation speed by adjusting the motor voltage, thereby precisely controlling the droplet size. This flexibility allows for precise adjustments to pesticide spraying based on different crop types, growth stages, and pest and disease conditions. Third, it improves spraying efficiency. Centrifugal atomizing spraying combined with a blower delivers droplets directly to the target area, reducing pesticide dispersion and waste in the air, and increasing spraying efficiency. Fourth, it is suitable not only for large-scale farmland pesticide spraying but also for the intensive management of smaller crops such as orchards and vegetable gardens. Fifth, the centrifugal atomizing disc 10 sprays droplets roughly radially outward. The radial range of the mist field sprayed by the centrifugal atomizing disc 10 is larger than that of the mist field sprayed by the pressure nozzle. Thus, when the fan 61 blows air forward from the rear of the centrifugal atomizing disc 10, the airflow can propel the mist field forward, thereby allowing the wind-driven spraying equipment to spray a mist field that can cover a larger area. For example, when spraying pesticide onto crops located to its left using the wind-driven spraying equipment, the mist field sprayed by the equipment can cover a larger vertical and / or front-to-back area of ​​the crop.

[0101] In one embodiment, the air guide cover 62 includes an air guide housing 621 and a fixing part located at the center of the air guide housing 621. A tongue is provided between the fixing part and the air guide housing 621, and the fixing seat 31 of the driving device 30 is connected to the fixing part at the center of the air guide cover 62.

[0102] In one embodiment, such as Figure 14 As shown, in the axial direction of the air-assisted spraying equipment, the centrifugal atomizing disc 10 is located outside the air guide shroud 62, that is, the centrifugal atomizing disc 10 is located on the side of the air guide shroud 62 away from the fan 61, and the air guide shroud 62 does not cover the outer periphery of the centrifugal atomizing disc 10.

[0103] Understandably, when air-assisted spraying equipment is mounted on an unmanned vehicle, it is used to spray pesticides onto crops to the side of the vehicle, such as to the left, right, front, and rear. By placing the centrifugal atomizing disc 10 outside the air guide shroud 62, preventing the shroud 62 from surrounding the outer edge of the disc, during spraying operations (e.g., when the air-assisted spraying equipment is configured to spray pesticides to the left or upper left of the vehicle), this reduces or prevents a small portion of the droplets sprayed outwards from the centrifugal atomizing disc 10 from floating in the air and eventually settling on the inner wall of the air guide shroud 62. This reduces the possibility of droplets forming on the inner wall of the air guide shroud 62, minimizing pollution and waste, and improving the user experience.

[0104] It is also understandable that when the centrifugal atomizing disc 10 is located outside the air guide shroud 62, the outer cover 40 has several baffles 42 surrounding the outer periphery of the centrifugal atomizing disc 10, which serve to protect the exposed centrifugal atomizing disc 10.

[0105] In one embodiment, reference is made to Figure 13 , Figure 14 The air guide cover 62 includes an air guide shell 621. The cross-sectional area of ​​the air outlet end of the air guide shell 621 is larger than the cross-sectional area of ​​the air inlet end. In other words, the air guide shell 621 is used to expand the blowing area from back to front, which is conducive to expanding the coverage area of ​​the mist droplets sprayed by the air-assisted spraying equipment.

[0106] Optionally, the air guide shroud 62 further includes a first tongue 622 and a second tongue 623 disposed inside the air guide housing 621, with the first tongue 622 and the second tongue 623 located on opposite sides of the centrifugal atomizing device. A first widening air duct 6201 is formed between the inner wall of the air guide housing 621 and the first tongue 622, and a second widening air duct 6202 is formed between the inner wall of the air guide housing 621 and the second tongue 623. Both the first widening air duct 6201 and the second widening air duct 6202 are configured to extend from one end of the air inlet to one end of the air outlet in a direction away from the central axis of the air guide shroud 62, so as to achieve a general widening effect. For example, the first tongue 622 and the second tongue 623 are located on the upper and lower sides of the centrifugal atomizing device, and the first widening air duct 6201 and the second widening air duct 6202 are respectively the upper widening air duct and the lower widening air duct. When the centrifugal atomizing spraying equipment 100 performs spraying operations, it can expand the upward and downward spraying range, allowing the centrifugal atomizing spraying equipment 100 on the unmanned vehicle to cover a larger area in the direction of crop height, thereby improving the spraying effect. (Refer to...) Figure 14 In the radial direction of the centrifugal atomizing spraying device 100, the baffle 42 is located between the first expansion air duct 6201 and the second expansion air duct 6202.

[0107] The inventors discovered that when a centrifugal atomizing disc 10 is surrounded by several baffles 42, and the air guide shroud 62 is equipped with a first widening air duct 6201 and a second widening air duct 6202, if the outer cover 40 is fixed in position during spraying, droplets easily accumulate on the baffles 42, and these droplets are easily drawn back towards the fan 61. This affects the stability of the mist field, the atomization spraying effect, and the user experience. In this application, the outer cover 40 is configured to be rotatable, which helps to improve or avoid the situation where droplets are drawn back at the outer cover 40 during the operation of the air-assisted spraying equipment.

[0108] Reference Figure 14The air-assisted spraying equipment can be divided into a central area, a transition area, and an air supply area along its radial direction. The centrifugal atomizing disc 10 is located in the central area, several baffles 42 of the outer cover 40 are located in the transition area, and the first expansion air duct 6201 and the second expansion air duct 6202 are located in the air supply area.

[0109] For example, Figure 18 It indicated Figure 17 Schematic diagram of each region in the middle. Figure 18 In this diagram, S1 is the aforementioned central region, S2 is the aforementioned transition region, and S3 to S8 surround the outer perimeter of the transition region. S3 is the area blocked by the first tongue 622, S4 is the area blocked by the second tongue 623, and S5 to S8 are all air supply regions. Regions S5 and S6 are the air outlets of the first expansion air duct 6201 and the second expansion air duct 6202, respectively (S5 and S6 are located on the upper and lower sides of the centrifugal atomizing disk 10). S7 and S8 are the air outlets of the front-to-back through air ducts (S7 and S8 are located on the left and right sides of the centrifugal atomizing disk 10). After the droplets are ejected from the central region S1, they pass through the transition region S2 where the baffle 42 is located, and are effectively blown forward when they reach regions S5 to S8. Of course, some droplets may also be blown forward after leaving the transition region. In other embodiments, the position of the air duct outlets may also be adjusted.

[0110] The baffle strip 42 is positioned in the transition area, which helps to reduce the droplet velocity, making it easier for the airflow to control the droplets and stabilize the fog field. It can also be understood that the baffle strip 42 in the transition area facilitates secondary atomization of the droplets. In centrifugal atomizing spraying equipment 100, if smaller droplet size is desired, increasing the rotation speed of the centrifugal atomizing disc 10 is generally considered. However, increasing the rotation speed of the centrifugal atomizing disc 10 may cause the droplets to maintain a high centrifugal velocity even when they reach the expansion airflow area. Therefore, to obtain a stable fog field, the wind speed of the fan 61 needs to be increased. However, in this embodiment, the baffle strip 42 can further disperse and atomize the droplets, reducing their size. This allows for obtaining smaller droplet size without increasing the rotation speed of the centrifugal atomizing disc 10 or the wind speed of the fan 61.

[0111] Please refer to Figure 15 The vehicle-mounted spraying system of this application will now be described.

[0112] The vehicle-mounted spraying system includes the aforementioned wind-assisted spraying device 100, and also includes an agricultural vehicle 200, on which the wind-assisted spraying device 100 is installed. The agricultural vehicle 200 can be an unmanned vehicle or a manned vehicle.

[0113] When the vehicle-mounted spraying system is in operation, the fan 61 of the air-assisted spraying device 100 faces the side of the plant protection vehicle 200 to spray pesticide onto crops in the left, right, front, rear, left front, right front, left rear, and right rear directions of the plant protection vehicle 200. Figure 15 As shown, the plant protection vehicle 200 has two air-assisted spraying devices 100 installed on the left and right sides of the vehicle body. The air-assisted spraying device 100 on the left side of the vehicle body is used to spray pesticide on the crop plants on the left side of the vehicle body, and the air-assisted spraying device 100 on the right side of the vehicle body is used to spray pesticide on the crop plants on the right side of the vehicle body. The orientation of the air-assisted spraying device 100 can be adjusted upward and / or downward, or towards the front and / or rear of the vehicle.

[0114] This application utilizes a wind-driven spraying device 100 mounted on a plant protection vehicle 200, enabling unmanned vehicles to travel in fields and automatically spray pesticides. The technology presented here has high application value in modern agriculture. This spraying method is suitable for various crops and offers advantages such as adjustable spray volume, adjustable droplet size, good atomization spraying effect, improved operational efficiency, and reduced labor costs.

[0115] The vehicle-mounted spraying system of this application is suitable for spraying pesticides on various types of crops. For example, for low-growing crops (peanuts, sweet potatoes, etc.), whose plant height is relatively short, adjusting the angle of the air-driven spraying device 100 can easily cover all parts of the plant, ensuring uniform pesticide spraying. For medium-height crops (cotton, soybeans, trellis cucumbers, trellis eggplants, corn, lemons, wheat, etc.), the centrifugal atomizing device, in conjunction with an appropriate fan 61, can effectively blow pesticide droplets onto the leaves and stems of the crops, improving the spraying effect. The driving speed can be adjusted according to the height and density of the crops, and the spraying angle can be adjusted by adjusting the angle of the air-driven spraying device 100 to precisely spray the target area.

[0116] When applied to agricultural and forestry plant protection, this vehicle-mounted spraying system can travel in fields such as farmland, orchards, and vegetable gardens. Figure 15 The illustration shows that spraying pesticides onto crop plants from the side yields good results. Due to the use of a centrifugal atomizer combined with a blower (61), the droplets have good penetrability, allowing them to reach the target plants more accurately. The small, evenly distributed droplets can enter the plant interior through gaps between leaves, ensuring more complete coverage of leaves and fruits. This improves the uneven distribution of pesticides between the outer and inner areas of the crop (e.g., the outer edges of leaves may receive pesticides, but the roots may not), and also improves the uneven distribution between the top and bottom of the crop, thus enhancing the control effect.

[0117] In one embodiment, such as Figure 15As shown, the wind-driven spraying equipment 100 includes a mounting base 80, a motor that is adjustable in angle or fixedly mounted on the mounting base 80, and the mounting base 80 that is adjustable in angle or fixedly mounted on the plant protection vehicle 200.

[0118] In this description, it should be understood that the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning. In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on the explanation herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without any creative effort, and these embodiments will all fall within the protection scope of the present invention.

Claims

1. A centrifugal atomizing device, characterized in that, include: Centrifugal atomizing disc (10) is used to centrifuge and eject liquid by rotation; The main body (90) of the device includes a drive device (30) and a flow guide device (20) connected to each other; the flow guide device (20) is used to deliver liquid to the centrifugal atomizing disk (10), the drive device (30) is connected to the centrifugal atomizing disk (10), and the drive device (30) is used to drive the centrifugal atomizing disk (10) to rotate. The outer cover (40) includes a mounting ring (41) and several partition strips (42); the mounting ring (41) is fitted around the outside of the device body (90), and the mounting ring (41) is connected to the device body (90); the partition strips (42) are connected to the mounting ring (41), and several partition strips (42) surround the outer periphery of the centrifugal atomizing disk (10).

2. The centrifugal atomizing device according to claim 1, characterized in that, The mounting ring (41) is rotatably connected to the device body (90).

3. The centrifugal atomizing device according to claim 1, characterized in that, The mounting ring (41) is detachably connected to the device body (90).

4. The centrifugal atomizing device according to claim 2, characterized in that, The driving device (30) includes a fixed base (31) and a driving shaft (32). The fixed base (31), the flow guiding device (20), and the centrifugal atomizing disk (10) are arranged along the axial direction. The fixed base (31) is connected to the flow guiding device (20), and the driving shaft (32) is connected to the centrifugal atomizing disk (10). The mounting ring (41) is fitted around the outside of the flow guiding device (20), and the mounting ring (41) is rotatably connected to the flow guiding device (20).

5. The centrifugal atomizing device according to claim 2 or 4, characterized in that, A connecting rail (70) is provided on the outside of the main body (90) of the device, and the mounting ring (41) is rotatably connected to the connecting rail (70).

6. The centrifugal atomizing device according to claim 5, characterized in that, The connecting track (70) includes a first track component (71) and a second track component (72). The first track component (71) is connected to the main body (90) of the device; the second track component (72) is detachably connected to the first track component (71).

7. The centrifugal atomizing device according to claim 6, characterized in that, The first track member (71) and the second track member (72) are arranged axially spaced apart, and a mounting groove (701) is defined between the first track member (71) and the second track member (72). The outer periphery of the connecting track (70) forms the opening of the mounting groove (701). The mounting ring (41) is at least partially inserted into the mounting groove (701) so that the mounting ring (41) is rotatably mounted on the connecting rail (70).

8. The centrifugal atomizing device according to claim 7, characterized in that, The mounting ring (41) includes a ring body (411) and an annular protrusion (412) disposed on the inner side of the ring body (411), the annular protrusion (412) being engaged in the mounting groove (701); a portion of the ring body (411) surrounds the outside of the first track member (71), and a portion of the ring body (411) surrounds the outside of the second track member (72).

9. The centrifugal atomizing device according to claim 7, characterized in that, The connecting track (70) further includes a support (73), which is disposed between the first track member (71) and the second track member (72); the support (73) is located inside the mounting ring (41); The first track component (71) and the second track component (72) are annular plates, and both the first track component (71) and the second track component (72) are fitted onto the outside of the flow guiding device (20) or the driving device (30).

10. The centrifugal atomizing device according to claim 2 or 4, characterized in that, The outer cover (40) includes a plurality of fan blades (44), the plurality of fan blades (44) surrounding the mounting ring (41), and the fan blades (44) being connected to the mounting ring (41); Alternatively, the centrifugal atomizing device may be equipped with a driver connected to the mounting ring (41), the driver being used to drive the outer cover (40) to rotate.

11. The centrifugal atomizing device according to claim 1, characterized in that, The flow guiding device (20) is provided with an inlet (21), a flow guiding cavity (22) and an outlet (23) that are interconnected. The outlet (23) is located on one side of the centrifugal atomizing disc (10). And / or, the outer cover (40) further includes an outer ring (43) surrounding the mounting ring (41), the outer ring (43) being connected to the mounting ring (41), and a plurality of the spacers (42) being disposed on one side of the outer ring (43) in the axial direction; one end of the spacer (42) is connected to the outer ring (43), and the other end extends axially away from the outer ring (43).

12. A pneumatic spraying device, characterized in that, The centrifugal atomizing device according to any one of claims 1 to 11 further includes a fan (61) and an air guide shroud (62); The centrifugal atomizing disc (10), the main body of the device (90), and the fan (61) are arranged along the axial direction. The fan (61) is used to blow the droplets sprayed by the centrifugal atomizing disc (10) towards the target area. The two ends of the air guide hood (62) are respectively provided with an air inlet and an air outlet. The end of the air guide hood (62) with the air inlet is connected to the fan (61).

13. A vehicle-mounted spraying system, characterized in that, The system includes the wind-driven spraying equipment (100) as described in claim 12, and also includes a plant protection vehicle (200); the wind-driven spraying equipment is installed on the plant protection vehicle (200).

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