Centrifugal atomizing nozzle for three-level variable spraying and unmanned aerial vehicle equipment thereof

Abstract

The invention relates to a centrifugal atomizing nozzle for three-level variable spraying and unmanned aerial vehicle equipment thereof, and belongs to the technical field of plant protection unmanned aerial vehicles. The device mainly comprises a brushless motor, a transmission assembly, an atomization assembly and a variable implementation assembly. The brushless motor transmits power to the atomization assembly through the transmission assembly, the atomization assembly is composed of a liquid conveying shaft, an upper atomization disc, a lower atomization disc and an atomization disc cover, the upper atomization disc and the lower atomization disc are each provided with rectangular atomization teeth, and liquid medicine atomization spraying is achieved through high-speed rotation. The variable implementation assembly comprises a stepping motor, a cylindrical cam and a sliding sleeve, the cylindrical cam is controlled to rotate through the stepping motor, the movement track of the sliding sleeve is adjusted, and the three-level variable spraying function of independent liquid feeding of the upper-layer atomizing disc, independent liquid feeding of the lower-layer atomizing disc and simultaneous liquid feeding of the upper-layer atomizing disc and the lower-layer atomizing disc is achieved. The sprayer can accurately adjust the pesticide application amount, improve the pesticide utilization rate and reduce environmental pollution, and is suitable for agricultural plant protection operation.

Description

Technical Field

[0001] The invention belongs to the technical field of plant protection UAVs, and in particular relates to a centrifugal atomizing nozzle for three-stage variable spraying and a UAV device thereof. Background Art

[0002] Plant protection drones are being widely used in agricultural pesticide application due to their high working efficiency, strong environmental adaptability, and good effect of spraying liquid settling in crop canopies. The nozzles commonly used in plant protection spraying devices are mainly divided into pressure nozzles and centrifugal nozzles. The pressure spraying system has the characteristics of wide atomization particle size spectrum, weak powder adaptability, and particle size and flow correlation. When the system pressure changes, the pressure at the pressure nozzle will also change, which will cause the change of droplet particle size. Therefore, there will be problems such as small system pressure change range and poor control accuracy under low pressure. The centrifugal spraying system has the characteristics of particle size adjustment and flow decoupling, large flow, and stronger powder adaptability. It has more advantages in fruit trees, high-dose powder operations, and large flow scenarios. Centrifugal nozzles are ultra-low volume atomizing nozzles. They use motors to drive the atomizing disk to rotate at high speed to generate centrifugal force to atomize the liquid. Combining plant protection drones with centrifugal atomizing nozzles is the main development direction of modern high-efficiency plant protection machinery and reduced-volume pesticide application technology.

[0003] At present, centrifugal atomizing nozzles mainly use large-capacity and constant-volume atomizing nozzles, which not only require a large amount of pesticide, but also cause the liquid to easily leak from the target, resulting in pesticide waste and environmental pollution. With the advancement of technology, the existing centrifugal atomizing nozzles have many inconveniences in use. Therefore, the demand for new atomizing nozzles for agricultural plant protection drones is growing. Changing the droplet size and droplet deposition distribution by adjusting the nozzle speed and flow rate, and achieving variable spraying of liquid by adjusting the nozzle structure have become issues that need to be urgently addressed. Summary of the invention

[0004] The present invention provides a three-stage variable spraying centrifugal atomizing nozzle and its unmanned aerial vehicle equipment, so as to solve the technical problems existing in the prior art that the centrifugal atomizing nozzle uses a large amount of pesticide, there is a waste of pesticides and environmental pollution, and the existing centrifugal atomizing nozzle is inconvenient to use.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A three-stage variable spray centrifugal atomizing nozzle comprises a transmission assembly, a brushless motor is arranged on the transmission assembly, the lower end of the transmission assembly is connected to an atomizing assembly, the atomizing assembly comprises an atomizing disc cover, an upper atomizing disc is arranged at the lower end of the atomizing disc cover, a first spraying space is formed between the atomizing disc cover and the upper atomizing disc, a lower atomizing disc is arranged at the lower end of the upper atomizing disc, and a second spraying space is formed between the upper atomizing disc and the lower atomizing disc; an infusion shaft passes through the transmission assembly and is connected with the first spraying space and the second spraying space in sequence, an inlet pipe of the infusion shaft is connected to a liquid supply device, and the brushless motor controls the rotation of the atomizing assembly through the transmission mechanism.

[0006] The transmission assembly comprises a motor support seat, and the brushless motor is fixed on the motor support seat.

[0007] The transmission assembly also includes a transmission gear and a transmission pinion. A connecting rod is arranged on the upper end of the transmission pinion. The output shaft of the brushless motor is connected to the transmission pinion through the connecting rod. The gears of the transmission gear and the transmission pinion are meshed.

[0008] A transmission bearing is arranged at the upper end of the transmission gear, a first upper sealing cover is arranged at the upper end of the transmission bearing, a first lower sealing cover is arranged at the lower end of the transmission bearing, and the infusion shaft passes through the interior of the transmission bearing and is connected with the atomization assembly.

[0009] A first upper O-ring is also provided at the upper end of the transmission bearing, and a first lower O-ring is provided at the lower end of the transmission bearing. The upper end of the transmission bearing is fixedly sealed with the first upper sealing cover through the first upper O-ring; the lower end of the transmission bearing is fixedly sealed with the lower sealing cover through the first lower O-ring.

[0010] An upper atomizer disk bearing is arranged between the atomizer disk cover and the upper atomizer disk, a second upper sealing cover is arranged at the upper end of the upper atomizer disk bearing through a second upper O-type sealing ring, and a second lower sealing cover is arranged at the lower end of the upper atomizer disk bearing through a second lower O-type sealing ring.

[0011] The upper atomizing disk and the lower atomizing disk are provided with a lower atomizing disk bearing, the upper end of the lower atomizing disk bearing is provided with a third upper sealing cover through a third upper O-type sealing ring, and the lower end of the lower atomizing disk bearing is provided with a third lower sealing cover through a third lower O-type sealing ring.

[0012] The upper atomizing disk and the lower atomizing disk are both bowl-shaped structures, and a plurality of rectangular atomizing teeth are evenly arranged on the inner side of the bowl of the upper atomizing disk and the lower atomizing disk, and the rectangular atomizing teeth are distributed in a circular array with the center of the upper atomizing disk and the lower atomizing disk as the center.

[0013] A variable implementation component is also provided at the upper end of the transmission component, which includes a stepper motor. The stepper motor is installed on a stepper motor support seat, and the stepper motor support seat is arranged above the transmission component. A cylindrical cam is provided at the lower end of the motor support seat. The cylindrical cam is coaxially arranged with the infusion shaft, and three layers of trajectory curves are arranged on the cylindrical cam.

[0014] A drone device with a centrifugal atomizing nozzle for three-stage variable spraying, wherein the infusion shaft is connected to a liquid supply device of the drone device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The centrifugal atomizing nozzle provided by the present invention transmits the power of the brushless motor to the atomizing disk through the transmission component, driving the atomizing disk to rotate at high speed. The liquid medicine enters the atomizing disk through the infusion shaft spirally connected to the plant protection drone, and is atomized by the high-speed rotation of the atomizing disk and the radial grooves processed on the inner wall of the atomizing disk. The atomized liquid medicine particles are sprayed out from the spray port under the action of centrifugal force to realize the spraying operation. The nozzle drives the cylindrical cam to rotate and control the motion trajectory of the sliding sleeve through the stepping motor, thereby controlling the liquid inlet of the upper and lower layers of the atomizing disk. When different atomizing disks are started, the operation coverage range is different. According to the requirements of the operation area, the two layers of atomizing disks can work together to achieve precise variable spraying of different application amounts. The high-speed rotating centrifugal nozzle can obtain droplets of different sizes by changing the rotation speed, which greatly improves the atomization effect of the liquid medicine, which is conducive to improving the effect of the plant protection drone on the control of crop pests and diseases. At the same time, by adjusting the nozzle structure, variable spraying of the liquid medicine can be achieved, so that the liquid medicine can accurately act on the target, improve the utilization rate of pesticides and reduce environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : A schematic diagram of the structure of a centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 2 : An exploded view of the parts of a centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 3 : A cross-sectional view of a transmission bearing of a centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 4 : A schematic diagram of the structure of the infusion shaft of the centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 5 : A schematic diagram of the structure of an atomizing disk of a centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 6 : A top view of an atomizing disk of a centrifugal atomizing nozzle for three-stage variable spraying provided in an embodiment of the present invention; Figure 7: A schematic diagram of the structure of a cylindrical cam of a centrifugal atomizing nozzle for three-stage variable spraying provided by an embodiment of the present invention; Figure 8 : A cross-sectional view of the sliding sleeve and the infusion shaft of a centrifugal atomizing nozzle for three-stage variable spraying provided in an embodiment of the present invention.

[0017] Explanation of reference numerals: 1. Brushless motor; 2. Transmission assembly; 201. Motor support seat; 202. Connecting rod; 203. Transmission pinion; 204. Transmission gear; 205. Transmission bearing; 206. First upper sealing cover; 207. First lower sealing cover; 208. First upper O-ring; 209. First lower O-ring; 3. Atomizer assembly; 301. Infusion shaft; 302. Upper atomizer disk bearing; 303. Upper atomizer disk; 304. Lower atomizer disk shaft Bearing; 305, lower atomizer disk; 306, atomizer disk cover; 307, second upper sealing cover; 308, second lower sealing cover; 309, second upper O-ring; 310, second lower O-ring; 311, third upper sealing cover; 312, third lower sealing cover; 313, third upper O-ring; 314, third lower O-ring; 4, variable implementation component; 401, stepper motor; 402, stepper motor support seat; 403, cylindrical cam; 404, sleeve. DETAILED DESCRIPTION

[0018] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0019] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] Example 1 This embodiment provides a centrifugal atomizing nozzle for three-stage variable spraying, such as Figures 1 to 7 As shown, the centrifugal atomizing nozzle for three-stage variable spraying mainly includes a brushless motor 1, a transmission component 2 and an atomizing component 3; the brushless motor 1 transmits power to the atomizing component 3 through the transmission component 2. Figure 1 and Figure 2 As shown, the transmission assembly 2 includes a motor support seat 201, and the output shaft at the bottom of the brushless motor 1 is installed on the motor support seat 201; the transmission assembly 2 also includes a transmission pinion 203, and a connecting rod 202 is arranged at the middle part of the upper end of the transmission pinion 203. The output shaft at the lower end of the brushless motor 1 passes through the motor support seat 201 and is hinged to the connecting rod 202 on the transmission pinion 203, and the transmission gear 204 is meshed with the gear of the transmission pinion 203; the upper end center axis of the transmission gear 204 is hinged with a transmission bearing 205; Figure 3As shown in the figure, a first upper sealing cover 206 is provided at the upper end of the transmission bearing 205, and the upper end of the transmission bearing 205 is fixedly sealed with the first upper sealing cover 206 through a first upper O-ring 208; a first lower sealing cover 207 is provided at the lower end of the transmission bearing 205, and the lower end of the transmission bearing 205 is fixedly sealed with the first lower sealing cover 207 through a first lower O-ring 209, and the lower end of the transmission bearing 205 passes through the transmission gear 204 and is connected to the atomization assembly 3 by bolts.

[0021] The atomizing assembly 3 includes a plurality of Figure 4 The infusion shaft 301 shown in the figure has its upper end connected to the plant protection drone, and the infusion shaft 301 passes through the transmission assembly 2 and is connected to the atomizing disc at the lower end of the atomizing disc cover 306, and the atomizing disc includes an upper atomizing disc 303 and a lower atomizing disc 305. The lower atomizing disc 305 is arranged at the lower end of the upper atomizing disc 303, and a first spraying space is formed between the atomizing disc cover 306 and the upper atomizing disc 303, and a second spraying space is formed between the upper atomizing disc 303 and the lower atomizing disc 305; after the infusion shaft 301 on the transmission assembly 2 passes through the transmission assembly 2, it passes through the interior of the transmission bearing 205 and is connected to the first spraying space and the second spraying space in sequence. An upper atomizer disk bearing 302 is arranged between the atomizer disk cover 306 and the upper atomizer disk 303 , a second upper sealing cover 307 is arranged at the upper end of the upper atomizer disk bearing 302 via a second upper O-ring 309 , and a second lower sealing cover 308 is arranged at the lower end of the upper atomizer disk bearing 302 via a second lower O-ring 310 . The upper atomizing disk 303 and the lower atomizing disk 305 are hinged to the infusion shaft 301 through the upper atomizing disk bearing 302 and the lower atomizing disk bearing 304. The upper end of the lower atomizing disk bearing 304 is provided with a third upper sealing cover 311 through a third upper O-type sealing ring 313, and the lower end of the lower atomizing disk bearing 304 is provided with a third lower sealing cover 312 through a third lower O-type sealing ring 314. The upper end of the upper atomizing disk 303 is provided with an atomizing disk cover 306, and the transmission gear 204 and the transmission pinion 203 in the transmission assembly 2 are fixed to the upper end of the atomizing disk cover 306, as shown in FIG. Figure 5 As shown in , the upper atomizing disk 303 and the lower atomizing disk 305 are both bowl-shaped structures, and a plurality of rectangular atomizing teeth are evenly arranged in the inner sides of the bowls of the upper atomizing disk 303 and the lower atomizing disk 305. The rectangular atomizing teeth are distributed in a circular array with the center of the upper atomizing disk 303 and the lower atomizing disk 305 as the center. Figure 6 As shown in the figure, a center hole is provided at the bottom of the upper atomizer disk 303 and the lower atomizer disk 305, and four bolt holes are evenly arranged around the center hole. The infusion axis 301 passes through the center holes of the upper atomizer disk 303 and the lower atomizer disk 305, and the atomizer disk cover 306, the upper atomizer disk 303 and the lower atomizer disk 305 are connected and fixed by screws and four bolt holes.

[0022] The upper end of the motor support seat 201 in the transmission assembly 2 is also provided with a variable implementation assembly 4, which includes a stepper motor 401, a stepper motor support seat 402 is provided on the motor support seat 201, and the stepper motor 401 is installed on the stepper motor support seat 402. The lower end of the motor support seat 201 is provided with a cylindrical cam 403, such as Figure 7 As shown in , the cylindrical cam 403 is provided with three layers of trajectory curves, which correspond to the three-level variable spraying of the drone atomizing nozzle; the lower end of the cylindrical cam 403 is rotatably connected with the sliding sleeve 404, as shown in Figure 8 As shown in the figure, the infusion shaft 301 passes through the interior of the sliding sleeve 404 from the lower end of the motor support seat 201, and after the infusion shaft 301 continues to pass through the transmission bearing 205 of the transmission gear 204, the infusion shaft 301 is connected with the atomization component 3, and the sliding sleeve 404, the infusion shaft 301 and the transmission bearing 205 are all coaxially arranged.

[0023] Example 2 This embodiment proposes a UAV device with a centrifugal atomizing nozzle for three-stage variable spraying, and its specific implementation method is as follows: The technicians installed the centrifugal atomizing nozzle for three-level variable spraying on the plant protection drone, connected the infusion shaft 301 with the liquid supply device of the plant protection drone, and debugged it so that the liquid in the liquid supply device enters the infusion shaft 301. According to the operation requirements, the speed of the brushless motor 1 is set, and the brushless motor 1 transmits power to the atomizing component 3 through the transmission component 2, driving the upper atomizing disk 303 and the lower atomizing disk 305 to rotate at high speed. The first atomizing teeth arranged in the upper atomizing disk 303 and the lower atomizing disk 305 produce the first-level atomization in the process of collision and contact with the rectangular atomizing teeth, and then the upper atomizing disk 303 rotates at high speed to generate centrifugal force in the first confined space and the second confined space, and the centrifugal force makes the liquid medicine in the upper atomizing disk 303 and the lower atomizing disk 305 disperse and diffuse along the upper surface of the atomizing disk to the edge of the upper atomizing disk 303 and the lower atomizing disk 305, and when reaching the edge, the second-level atomization occurs in the process of collision and contact with the arc-shaped atomizing teeth at the edge, and the liquid medicine is thrown out to form tiny mist particles, which undergo the third-level atomization and then spray outward, so that droplets of smaller size can be obtained, which greatly improves the atomization effect of the liquid medicine. For areas with serious pests and diseases, the speed of the brushless motor 1 is adjusted to a higher value to produce finer droplets and enhance the coverage effect of pesticides; for areas with less pests and diseases, its speed is appropriately reduced. The liquid medicine is supplied to the infusion shaft 301 by the liquid supply device of the plant protection UAV, and enters the upper atomization disk 303 and the lower atomization disk 305 through the infusion shaft 301. The liquid medicine is atomized by the high-speed rotation of the upper atomization disk 303 and the lower atomization disk 305 and the radial grooves processed on the inner wall of the atomization disk. The atomized liquid medicine particles are sprayed out from the spray port under the action of centrifugal force to realize the spraying operation.

[0024] The plant protection drone takes off and enters the orchard operation area according to the preset route. When the drone flies to an area with serious pests and diseases, the variable implementation component 4 starts working. The stepper motor 401 drives the cylindrical cam 403 to rotate and then controls the movement trajectory of the sliding sleeve 404. The sliding sleeve 404 controls the liquid outlet of the infusion shaft 301, so that the upper atomization disk 303 and the lower atomization disk 305 are filled with liquid at the same time. The different movements of the sliding sleeve 404 on the three-layer trajectory curve of the cylindrical cam 403 control the liquid inflow of the upper atomization disk 303 and the lower atomization disk 305. Since the upper atomizing disk 303 and the lower atomizing disk 305 work at the same time, the operation coverage range is increased, and the high-speed rotating upper atomizing disk 303 and the lower atomizing disk 305 fully atomize the pesticide, and a large number of fine droplets are sprayed from the spray port under the action of centrifugal force, and evenly cover the branches and leaves of the apple tree, which effectively increases the spraying amount and coverage effect of the pesticide and ensures the effective prevention and control of diseases and pests.

[0025] When the drone flies to an area with less pests and diseases, the variable implementation component 4 comes into play again. By controlling the stepper motor 401 to rotate the cylindrical cam 403 and change the motion trajectory of the sliding sleeve 404, the upper atomizing disc 303 is fed with liquid alone, and the lower atomizing disc 305 stops feeding liquid. In this way, the amount of pesticide applied is reduced, and at the same time, the atomization function of the upper atomizing disc 303 is utilized to ensure that the pesticide can act accurately on the target, avoiding the waste of pesticides and excessive pollution to the environment. During the entire orchard spraying process, the plant protection drone flexibly switches the liquid feeding mode of the upper atomizing disc 303 and the lower atomizing disc 305 through the variable implementation component 4 according to the pest and disease conditions in different areas, realizing accurate three-level variable spraying operations.

[0026] After the application of pesticides, after a period of observation, it was found that pests and diseases were effectively controlled. In areas with serious pests and diseases, the high spraying rate of pesticides and good atomization effect ensured a strong blow to pests and diseases; in areas with less pests and diseases, precise variable spraying not only ensured the prevention and control effect, but also reduced the amount of pesticides used and reduced the impact on the environment. At the same time, due to the efficient atomization performance of the nozzle, the utilization rate of pesticides was improved, the pesticide residue was reduced, and the quality and safety of the fruit were guaranteed.

[0027] Through the implementation method of the above-mentioned three-level variable spraying centrifugal atomizing nozzle, when different atomizing disks are started, the operation coverage is different. According to the needs of the operation area, the two layers of atomizing disks can work together to achieve precise variable spraying of different application amounts. The high-speed rotating centrifugal nozzle can obtain droplets of different sizes by changing the rotation speed, which greatly improves the atomization effect of the liquid medicine, which is conducive to improving the effect of plant protection drones on crop pest control operations. At the same time, by adjusting the nozzle structure, variable spraying of liquid medicine can be achieved, so that the liquid medicine can accurately act on the target, improve the utilization rate of pesticides and reduce environmental pollution.

[0028] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A three-stage variable spray centrifugal atomizing nozzle, characterized in that: The invention comprises a transmission assembly (2), wherein a brushless motor (1) is arranged on the transmission assembly (2), the lower end of the transmission assembly (2) is connected to an atomizing assembly (3), the atomizing assembly (3) comprises an atomizing disc cover (306), an upper atomizing disc (303) is arranged at the lower end of the atomizing disc cover (306), a first spraying space is formed between the atomizing disc cover (306) and the upper atomizing disc (303), a lower atomizing disc (305) is arranged at the lower end of the upper atomizing disc (303), and a second spraying space is formed between the upper atomizing disc (303) and the lower atomizing disc (305); an infusion shaft (301) passes through the transmission assembly (2) and is connected to the first spraying space and the second spraying space in sequence, an inlet pipe of the infusion shaft (301) is connected to a liquid supply device, and the brushless motor (1) controls the rotation of the atomizing assembly (3) through the transmission mechanism (2).

2. A centrifugal atomizing nozzle for three-stage variable spraying according to claim 1, characterized in that: The transmission assembly (2) comprises a motor support seat (201), and the brushless motor (1) is fixed on the motor support seat (201).

3. A centrifugal atomizing nozzle for three-stage variable spraying according to claim 2, characterized in that: The transmission assembly (2) further comprises a transmission gear (204) and a transmission pinion (203); a connecting rod (202) is provided at the upper end of the transmission pinion (203); the output shaft of the brushless motor (1) is connected to the transmission pinion (203) via the connecting rod (202); and the transmission gear (204) is meshed with the gears of the transmission pinion (204).

4. A three-stage variable spray centrifugal atomizing nozzle according to claim 2, characterized in that: A transmission bearing (205) is disposed at the upper end of the transmission gear (204), a first upper sealing cover (206) is disposed at the upper end of the transmission bearing (205), a first lower sealing cover (207) is disposed at the lower end of the transmission bearing (205), and the infusion shaft (301) passes through the interior of the transmission bearing (205) and is in communication with the atomization assembly (3).

5. A three-stage variable spray centrifugal atomizing nozzle according to claim 4, characterized in that: A first upper O-type sealing ring (208) is also provided at the upper end of the transmission bearing (205), and a first lower O-type sealing ring (209) is provided at the lower end of the transmission bearing (205); the upper end of the transmission bearing (205) is fixedly sealed with the first upper sealing cover (206) via the first upper O-type sealing ring (208); and the lower end of the transmission bearing (205) is fixedly sealed with the first lower sealing cover (207) via the first lower O-type sealing ring (209).

6. A three-stage variable spray centrifugal atomizing nozzle according to claim 1, characterized in that: An upper atomizing disk bearing (302) is arranged between the atomizing disk cover (306) and the upper atomizing disk (303); a second upper sealing cover (307) is arranged at the upper end of the upper atomizing disk bearing (302) via a second upper O-type sealing ring (309); and a second lower sealing cover (308) is arranged at the lower end of the upper atomizing disk bearing (302) via a second lower O-type sealing ring (310).

7. A three-stage variable spray centrifugal atomizing nozzle according to claim 1, characterized in that: The upper atomizing disk (303) and the lower atomizing disk (305) are provided with a lower atomizing disk bearing (304); the upper end of the lower atomizing disk bearing (304) is provided with a third upper sealing cover (311) via a third upper O-type sealing ring (313); and the lower end of the lower atomizing disk bearing (304) is provided with a third lower sealing cover (312) via a third lower O-type sealing ring (314).

8. A three-stage variable spray centrifugal atomizing nozzle according to claim 7, characterized in that: The upper atomizing disk (303) and the lower atomizing disk (305) are both bowl-shaped structures, and a plurality of rectangular atomizing teeth are evenly arranged on the inner sides of the bowls of the upper atomizing disk (303) and the lower atomizing disk (305), and the rectangular atomizing teeth are distributed in a circular array with the center of the upper atomizing disk (303) and the lower atomizing disk (305) as the center.

9. A centrifugal atomizing nozzle for three-stage variable spraying according to claim 1, characterized in that: A variable implementation component (4) is also provided at the upper end of the transmission component (2). The variable implementation component (4) includes a stepper motor (401). The stepper motor (401) is mounted on a stepper motor support seat (402). The stepper motor support seat (402) is arranged above the transmission component (2). A cylindrical cam (403) is provided at the lower end of the motor support seat (201). The cylindrical cam (403) is coaxially arranged with the infusion shaft (301). Three layers of track curves are arranged on the cylindrical cam (403).

10. A UAV device with a centrifugal atomizing nozzle for three-stage variable spraying, based on a centrifugal atomizing nozzle for three-stage variable spraying according to any one of claims 1 to 9, characterized in that: The infusion shaft (301) is connected to a liquid supply device of the drone equipment.

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