Centrifugal spraying equipment and plant protection equipment

Abstract

The embodiment of the invention provides centrifugal spraying equipment and plant protection equipment, and relates to the technical field of plant protection. The centrifugal spraying equipment comprises at least two centrifugal atomization modules, a fan and a guide shell, the guide shell is installed outside the fan, and the guide shell is provided with an air outlet so that airflow generated by the fan can be guided to the air outlet; the centrifugal atomization module is located at the air outlet and used for spraying fog drops, and the guiding shell is used for guiding airflow generated by the draught fan to the centrifugal atomization module, so that the fog drops are blown away outwards. The centrifugal atomization module of the centrifugal spraying equipment can throw out fog drops under the action of centrifugal force, meanwhile, the fog drops are blown away outwards through air flow generated by the fan, spraying of the fog drops can be achieved without high pressure, the pressure on the water pipe and the pump is reduced, and therefore the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of plant protection technology, and more specifically, to a centrifugal spraying device and a plant protection device. Background Technology

[0002] Unmanned agricultural equipment is widely used in agriculture. These equipment can be equipped with various operating systems, enabling agricultural spraying and sowing operations. Currently, when using unmanned agricultural equipment for spraying, the spraying device follows the movement of the equipment to achieve the spraying operation, thus quickly achieving large-area and high-volume spraying.

[0003] Existing spraying equipment generally uses pressure nozzles. Because pressure nozzles require high pressure to output liquid, they put a lot of pressure on the water pipes and pumps, resulting in a shorter lifespan. Summary of the Invention

[0004] This invention provides a centrifugal spraying device and a plant protection device, which can reduce the pressure on water pipes and pumps during spraying and improve their service life.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a centrifugal spray device, comprising:

[0007] Fan;

[0008] A guide shell, having an air outlet, is installed on the outside of the fan to guide the airflow generated by the fan to the air outlet;

[0009] At least two centrifugal atomizing modules located at the air outlet are used to spray mist droplets;

[0010] The guide shell is used to guide the airflow generated by the fan to the centrifugal atomizing module, thereby blowing the droplets outward.

[0011] Optionally, the guide shell has at least two air outlets facing different directions, and each air outlet is equipped with at least one of the centrifugal atomizing modules.

[0012] Optionally, the guide shell has at least two flow channels, the inlets of the at least two flow channels are connected to the fan, and the outlets of the at least two flow channels are connected to the air outlet. The airflow generated by the fan passes through the flow channels to the air outlet and is blown out of the centrifugal atomizing module.

[0013] Optionally, the number of flow channels corresponds one-to-one with the number of centrifugal atomizing modules.

[0014] Optionally, the centrifugal atomization module includes a centrifugal spray disk and a driving component. The driving component is connected to the centrifugal spray disk and is used to drive the centrifugal spray disk to rotate, so that the centrifugal spray disk sprays atomized droplets outward.

[0015] Optionally, the rotation plane of the centrifugal spray disk is arranged in the vertical direction.

[0016] Optionally, the centrifugal atomization module further includes a liquid storage tank and a water pump. The water pump is connected to both the centrifugal spray plate and the liquid storage tank, and the water pump pumps the liquid in the liquid storage tank into the centrifugal spray plate.

[0017] Optionally, the centrifugal atomization module further includes a reflux element, which is disposed outside the centrifugal spray disk and connected to the liquid storage tank. The reflux element is used to recover droplets during the spraying process of the centrifugal spray disk and send the recovered droplets back to the liquid storage tank.

[0018] Optionally, the reflux component includes an upper reflux shroud and a lower reflux shroud that are detachably connected to each other. The upper reflux shroud and the lower reflux shroud together form a reflux channel, and the reflux channel is connected to a portion of the edge of the liquid storage tank and the centrifugal spray plate.

[0019] Optionally, the centrifugal atomization module further includes a guide shroud, which is rotatably connected to the return element. The guide shroud covers a portion of the edge of the centrifugal spray disk and is used to rotate relative to the return element, thereby adjusting the range of the guide shroud covering the edge of the centrifugal spray disk and thus adjusting the spray angle of the centrifugal spray disk.

[0020] Optionally, the centrifugal atomization module further includes a reflux pipe, the two ends of which are connected to the reflux component and the water pump, respectively, so that the water pump pumps the atomized droplets recovered in the reflux component to the liquid storage tank.

[0021] Optionally, the fan is an axial flow fan or a centrifugal fan.

[0022] Embodiments of the present invention also provide a plant protection device, including a mobile platform and a centrifugal spraying device, wherein the centrifugal spraying device is mounted on the mobile platform.

[0023] The beneficial effects of the centrifugal spraying device and plant protection device according to embodiments of the present invention include, for example:

[0024] This centrifugal spraying device includes at least two centrifugal atomizing modules, a fan, and a guide shell. The guide shell is installed outside the fan and has an air outlet to guide the airflow generated by the fan to the air outlet. The centrifugal atomizing modules are located at the air outlet and are used to spray droplets. The guide shell guides the airflow generated by the fan to the centrifugal atomizing modules, thereby dispersing the droplets outward. In use, liquid enters the centrifugal spraying modules and forms droplets, which are then sprayed outward. The airflow generated by the fan is directed towards the centrifugal atomizing modules through the air outlet of the guide shell, thus dispersing the sprayed droplets. The centrifugal atomizing modules of this device can throw the droplets out under centrifugal force, while the airflow generated by the fan disperses the droplets. This allows for droplet spraying without high pressure, reducing pressure on water pipes and pumps, thereby extending their service life.

[0025] This plant protection equipment includes a mobile platform and a centrifugal sprayer, which is mounted on the mobile platform. During use, the centrifugal atomization module of the centrifugal sprayer throws droplets out under centrifugal force, while the airflow generated by a fan disperses the droplets. This eliminates the need for high pressure, reducing pressure on water pipes and pumps and thus extending their service life. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the plant protection equipment provided in this embodiment;

[0028] Figure 2 This is a first-view structural schematic diagram of the centrifugal spray device provided in this embodiment;

[0029] Figure 3 This is a second-view structural schematic diagram of the centrifugal spray device provided in this embodiment;

[0030] Figure 4 This is a third-view structural schematic diagram of the centrifugal spray device provided in this embodiment.

[0031] Icons: 10-Liquid storage tank; 20-Centrifugal atomization module; 21-Centrifugal spray disc; 22-Water pump; 23-Return component; 24-Guide cover; 30-Fan; 40-Guide shell; 41-Mounting base; 42-Outer shell; 100-Centrifugal spraying equipment; 200-Mobile platform; 1000-Plant protection equipment. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and 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 this invention.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Unmanned agricultural equipment is widely used in agriculture. These equipment can be equipped with various operating systems, enabling agricultural spraying and sowing operations. Currently, when using unmanned agricultural equipment for spraying, the spraying device follows the movement of the equipment to achieve the spraying operation, thus quickly achieving large-area and high-volume spraying.

[0039] Spraying equipment in related technologies generally uses pressure nozzles. Because pressure nozzles need to use high pressure to output liquid, they put a lot of pressure on water pipes and pumps, resulting in a short lifespan.

[0040] Please refer to Figures 1-4 This embodiment provides a plant protection device 1000, which includes a movable platform 200 and a centrifugal spraying device 100. The centrifugal spraying device 100 is mounted on the movable platform 200 and performs spraying operations as the movable platform 200 moves. This plant protection device 1000 can effectively improve the aforementioned technical problems, reduce the pressure on water pipes and pumps during spraying, and increase service life.

[0041] Specifically, existing spraying devices typically require manual carrying on the back for spraying. Due to the weight of the spraying device, this method consumes significant manpower and physical strength, and the spraying effect is poor. To address this technical problem, the plant protection equipment 1000 provided in this embodiment allows the centrifugal spraying device 100 to be mounted on a mobile platform 200 during use. The centrifugal spraying device 100 moves with the mobile platform 200 to perform spraying operations, freeing up manpower. The mobile platform 200 can carry a large-capacity centrifugal spraying device 100 for spraying operations, improving spraying efficiency and making it more convenient and flexible to use.

[0042] In this embodiment, the mobile platform 200 is an unmanned vehicle, specifically an agricultural unmanned vehicle. The centrifugal spraying equipment can be mounted on the unmanned vehicle and follow its movement to perform spraying operations. In other embodiments, the mobile platform 200 can also be a drone, specifically an agricultural drone, which generally carries spraying components, seeding components, etc., required for agriculture, enabling spraying irrigation, sowing, etc. Of course, the mobile platform 200 can also carry cameras, gaming devices, etc. Furthermore, the carrier is not limited to unmanned vehicles or drones; for example, the mobile platform 200 can also be a robot, an unmanned boat, etc.

[0043] Specifically, in this embodiment, the unmanned vehicle is a four-wheeled unmanned vehicle capable of carrying a centrifugal spraying device 100 to stably perform spraying operations, and is more stable and balanced during travel. In other embodiments, the unmanned vehicle may also be a two-wheeled or three-wheeled unmanned vehicle, etc., and no specific limitation is made here.

[0044] Please refer to Figures 1-4The centrifugal spraying device 100 includes a liquid storage tank 10, at least two centrifugal atomizing modules 20, a fan 30, and a guide shell 40. The at least two centrifugal atomizing modules 20 are connected to the liquid storage tank 10 and are respectively disposed at both ends of the liquid storage tank 10. The centrifugal atomizing modules 20 are used to spray mist droplets. The guide shell 40 is installed outside the fan 30 and has an air outlet to guide the airflow generated by the fan 30 to the air outlet. The centrifugal atomizing modules 20 are located at the air outlet, and the guide shell 40 is used to guide the airflow generated by the fan 30 to the centrifugal atomizing modules 20, thereby blowing the mist droplets outward.

[0045] In this embodiment, at least one centrifugal atomizing module 20 is installed on both sides of the movable platform 200, the liquid storage tank 10 is located at the front end of the movable platform 200, and the fan 30 and the guide shell 40 are located at the rear end of the liquid storage tank 10.

[0046] In this embodiment, the guide shell 40 has at least two air outlets facing different directions, and each air outlet is equipped with at least one centrifugal atomizing module 20.

[0047] In existing technologies, spraying devices generally use pressure nozzles for fixed spraying. For example, multiple pressure nozzles are directly installed in farmland, and multiple pressure nozzles spray simultaneously to achieve large-area spraying operations in farmland. However, since pressure nozzles need to use high pressure to output liquid, the pressure on water pipes and pumps is relatively high, resulting in a short lifespan. To address this technical problem, the centrifugal spraying device 100 provided in this embodiment is mounted on a movable platform 200, allowing it to move within farmland. This makes spraying more flexible and eliminates the need for numerous nozzles, saving costs. Furthermore, the centrifugal spraying device 100 includes at least two centrifugal atomizing modules 20, which can simultaneously spray droplets. During spraying, the airflow generated by the fan 30 is directed towards the centrifugal atomizing modules 20 through the air outlet of the guide shell 40, thus dispersing the sprayed droplets. The centrifugal atomizing modules 20 of the centrifugal spraying device 100 can throw the droplets out under centrifugal force, while the airflow generated by the fan 30 disperses the droplets. This eliminates the need for high pressure, reducing pressure on water pipes and pumps and thus extending their service life.

[0048] In this embodiment, the guide shell 40 has at least two flow channels. The inlets of at least two flow channels are connected to the fan 30, and the outlets of at least two flow channels are connected to the air outlet. The airflow generated by the fan 30 passes through the flow channels to the air outlet and is blown out of the centrifugal atomizing module 20. There are two flow channels, symmetrically arranged, with the inlets of the flow channels located below their outlets. After the fan 30 starts, the airflow enters the flow channel through the inlet, flows upward along the flow channel, and finally enters the air outlet through the outlet, blowing towards the centrifugal atomizing module 20, thus blowing the atomized droplets sprayed by the centrifugal atomizing module 20 to a farther location.

[0049] Specifically, the guide shell 40 includes a mounting base 41 and a housing 42, which are connected. The blades of the fan 30 are rotatably disposed within the housing 42. The mounting base 41 is detachably mounted on the movable platform 200 by bolts, thereby fixing the guide shell 40 and the fan 30 to the movable platform 200. The fan 30 is installed inside the housing 42. After the fan 30 is started, the air generated is concentrated at the air outlet through the flow channel, so that the air is concentrated and blown out of the air outlet and directed entirely towards the centrifugal atomizing module 20, thereby propagating the atomized droplets sprayed outward by the centrifugal atomizing module 20 to a farther location.

[0050] Understandably, the number of flow channels corresponds one-to-one with the number of centrifugal atomizing modules 20, and the number of air outlets corresponds one-to-one with the number of centrifugal atomizing modules 20. In this embodiment, there are two centrifugal atomizing modules 20, which are respectively disposed at both ends of the fan 30, and there are two air outlets, so that the airflow generated by the fan 30 can simultaneously pass through the flow channels to reach the air outlets and be blown towards the two centrifugal atomizing modules 20. In other embodiments, the number of centrifugal atomizing modules 20 may be three, four, or more, and no specific limitation is made here.

[0051] Specifically, the housing 42 includes a detachably connected upper cover and a bottom cover, with the fan 30 installed between the upper cover and the bottom cover. In order to ensure that the fan 30 can work continuously, stably and safely, the bottom cover is provided with an air inlet.

[0052] In this embodiment, the top cover and the bottom shell are detachably connected by bolts.

[0053] More often, fan 30 is an axial flow fan or a centrifugal fan.

[0054] It should be noted that the centrifugal atomization module 20 includes a centrifugal spray disc 21 and a drive unit. The drive unit is connected to the centrifugal spray disc 21, and the centrifugal spray disc 21 is connected to the liquid storage tank 10. The drive unit drives the centrifugal spray disc 21 to rotate, causing the centrifugal spray disc 21 to spray atomized droplets outward. During rotation, the centrifugal spray disc 21 throws the liquid out under centrifugal force, achieving 360° spraying. Furthermore, compared to pressure-type nozzles in existing technologies, the centrifugal spray disc 21 does not require a high-power motor or high-pressure water pipes. The centrifugal spray disc 21 can spray atomized droplets under centrifugal force while rotating, reducing the pressure on water pipes and pumps, increasing service life, reducing energy consumption, and lowering costs.

[0055] Specifically, in this embodiment, the rotation plane of the centrifugal spray disk 21 is arranged in the vertical direction.

[0056] In this embodiment, the driving component is a drive motor.

[0057] Furthermore, the centrifugal atomization module 20 also includes a liquid storage tank 10 and a water pump 22. The water pump 22 is connected to both the centrifugal spray plate 21 and the liquid storage tank 10, and pumps the liquid in the liquid storage tank 10 into the centrifugal spray plate 21. The number of water pumps 22 corresponds one-to-one with the number of centrifugal atomization modules 20. The water pump 22 pumps the liquid in the liquid storage tank 10 into the centrifugal spray plate 21, causing the centrifugal spray plate 21 to spray the liquid out under the action of centrifugal force.

[0058] It should also be noted that the centrifugal atomization module 20 further includes a return element 23. The return element 23 is located outside the centrifugal spray plate 21 and is connected to the liquid storage tank 10. The return element 23 is used to recover droplets during the spraying process of the centrifugal spray plate 21 and send the recovered droplets back into the liquid storage tank 10. Specifically, the return element 23 can recover a portion of the droplets and store them in the liquid storage tank 10, and then pump them back into the centrifugal spray plate 21 for spraying operations during the next spraying operation via the water pump 22.

[0059] Specifically, the reflux component 23 includes an upper reflux shroud and a lower reflux shroud that are detachably connected to each other. The upper and lower reflux shrouds together form a reflux channel, which is connected to the liquid storage tank 10 and part of the edge of the centrifugal spray plate 21. The upper and lower reflux shrouds are detachably connected by bolts.

[0060] Furthermore, the centrifugal atomization module 20 also includes a return pipe, the two ends of which are connected to the return component 23 and the water pump 22, respectively, so that the water pump 22 pumps the mist droplets recovered in the return component 23 to the storage tank 10. When the water pump 22 is started, it can draw the mist droplets in the return component 23 into the return pipe and pump them into the storage tank 10 for recycling.

[0061] It should also be noted that during the use of the centrifugal spray device 100, since the centrifugal spray disc 21 continuously performs 360° spraying while rotating, in some cases requiring directional spraying, the spray amplitude of the centrifugal spray disc 21 needs to be adjusted to adapt to different spraying scenarios. Therefore, the centrifugal atomization module 20 provided in this embodiment also includes a guide cover 24, which is rotatably connected to the return member 23. The guide cover 24 covers part of the edge of the centrifugal spray disc 21 and is used to rotate relative to the return member 23, thereby adjusting the range of the guide cover 24 covering the edge of the centrifugal spray disc 21, and thus adjusting the spray angle of the centrifugal spray disc 21.

[0062] Specifically, the guide cover 24 is connected to the end of the return member 23 away from the liquid storage tank 10 via a rotating buckle. The guide cover 24 can rotate relative to the return member 23 via the rotating buckle. When the guide cover 24 is completely in contact with the outer wall of the return member 23, the spray angle of the centrifugal spray disc 21 is the largest. When the guide cover 24 is rotated to the maximum position in the direction away from the return member 23, the spray angle of the centrifugal spray disc 21 is the smallest. By adjusting the angle at which the guide cover 24 covers the edge of the centrifugal spray disc 21, the spray angle of the centrifugal spray disc 21 can be adjusted, thereby achieving the purpose of directional spraying.

[0063] In this embodiment, the rotation angle of the guide cover 24 is between 0° and 135°. Specifically, the maximum rotation angle of the guide cover 24 is 135°. In other embodiments, the maximum rotation angle of the guide cover 24 may also be 130°, 125°, or 120°. No specific limitation is made here.

[0064] The centrifugal spraying device 100 and the plant protection device 1000 provided in this embodiment have at least the following advantages:

[0065] Existing spraying devices generally use pressure nozzles for fixed spraying, such as installing multiple pressure nozzles directly in the farmland. Multiple pressure nozzles spray simultaneously to achieve large-area spraying operations in the farmland. However, because pressure nozzles need to use high pressure to output liquid, the pressure on water pipes and pumps is relatively high, resulting in a short lifespan. To address this technical problem, the centrifugal spraying device 100 provided in this embodiment is mounted on a movable platform 200, allowing it to move within farmland. This makes spraying more flexible and eliminates the need for numerous nozzles, saving costs. Furthermore, the centrifugal spraying device 100 includes at least two centrifugal atomizing modules 20, which can simultaneously spray droplets. During spraying, the airflow generated by the fan 30 is directed towards the centrifugal atomizing modules 20 through the air outlet of the guide shell 40, thus dispersing the sprayed droplets. The centrifugal atomizing modules 20 of the centrifugal spraying device 100 can throw the droplets out under centrifugal force, while the airflow generated by the fan 30 disperses the droplets. This eliminates the need for high pressure, reducing pressure on water pipes and pumps and extending their service life.

[0066] In summary, the embodiments of the present invention provide a centrifugal spraying device 100 and a plant protection device 1000. The centrifugal spraying device 100 includes at least two centrifugal atomizing modules 20, a fan 30, and a guide shell 40. The guide shell 40 is installed outside the fan 30 and has an air outlet to guide the airflow generated by the fan 30 to the air outlet. The centrifugal atomizing modules 20 are located at the air outlet and are used to spray mist droplets. The guide shell 40 is used to guide the airflow generated by the fan 30 to the centrifugal atomizing modules 20, thereby blowing the mist droplets outward. When the centrifugal spraying device 100 is in use, the liquid enters the centrifugal spraying module and forms droplets, which are then sprayed outwards. The airflow generated by the blower 30 is blown towards the centrifugal atomizing module 20 through the air outlet of the guide shell 40, thereby dispersing the sprayed droplets. The centrifugal atomizing module 20 of the centrifugal spraying device 100 can throw the droplets out under the action of centrifugal force, and at the same time, the airflow generated by the blower 30 disperses the droplets outwards. The spraying of droplets can be achieved without high pressure, which reduces the pressure on water pipes and pumps, thereby improving service life.

[0067] The plant protection equipment 1000 includes a mobile platform 200 and a centrifugal spraying device 100, which is mounted on the mobile platform 200. When in use, the centrifugal atomization module 20 of the centrifugal spraying device 100 can eject droplets under centrifugal force, while the airflow generated by the fan 30 disperses the droplets outwards. This eliminates the need for high pressure, reducing pressure on water pipes and pumps and thus extending their service life.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A centrifugal spray device, characterized in that, include: Fan (30); A guide shell (40) having an air outlet is installed on the outside of the fan (30) to guide the airflow generated by the fan (30) to the air outlet; At least two centrifugal atomizing modules (20) located at the air outlet are used to spray mist droplets; The guide shell (40) is used to guide the airflow generated by the fan (30) to the centrifugal atomizing module (20), thereby blowing the mist droplets outward.

2. The centrifugal spray device according to claim 1, characterized in that, The guide shell (40) has at least two air outlets facing different directions, and each air outlet is equipped with at least one of the centrifugal atomizing modules (20).

3. The centrifugal spray device according to claim 2, characterized in that, The guide shell (40) has at least two flow channels. The inlets of the at least two flow channels are connected to the fan (30), and the outlets of the at least two flow channels are connected to the air outlet. The airflow generated by the fan (30) passes through the flow channels to reach the air outlet and is blown out of the centrifugal atomizing module (20).

4. The centrifugal spray device according to claim 3, characterized in that, The number of flow channels corresponds one-to-one with the number of centrifugal atomization modules (20).

5. The centrifugal spray device according to claim 1, characterized in that, The centrifugal atomization module (20) includes a centrifugal spray disk (21) and a driving component. The driving component is connected to the centrifugal spray disk (21) and is used to drive the centrifugal spray disk (21) to rotate, so that the centrifugal spray disk (21) sprays atomized droplets outward.

6. The centrifugal spray device according to claim 5, characterized in that, The rotation plane of the centrifugal spray disk (21) is arranged in the vertical direction.

7. The centrifugal spray device according to claim 5, characterized in that, The centrifugal atomization module (20) also includes a liquid storage tank (10) and a water pump (22). The water pump (22) is connected to both the centrifugal spray plate (21) and the liquid storage tank (10). The water pump (22) pumps the liquid in the liquid storage tank (10) into the centrifugal spray plate (21).

8. The centrifugal spray device according to claim 7, characterized in that, The centrifugal atomization module (20) also includes a return element (23), which is located outside the centrifugal spray plate (21) and connected to the liquid storage tank (10). The return element (23) is used to recover droplets during the spraying process of the centrifugal spray plate (21) and send the recovered droplets back to the liquid storage tank (10).

9. The centrifugal spray device according to claim 8, characterized in that, The reflux component (23) includes an upper reflux shroud and a lower reflux shroud that are detachably connected to each other. The upper reflux shroud and the lower reflux shroud together form a reflux channel. The reflux channel is connected to a portion of the edges of the liquid storage tank (10) and the centrifugal spray plate (21).

10. The centrifugal spray device according to claim 8, characterized in that, The centrifugal atomizing module (20) also includes a guide cover (24), which is rotatably connected to the return member (23). The guide cover (24) covers a portion of the edge of the centrifugal spray disk (21). The guide cover (24) is used to rotate relative to the return member (23) to adjust the range of the guide cover (24) covering the edge of the centrifugal spray disk (21), thereby adjusting the spray angle of the centrifugal spray disk (21).

11. The centrifugal spray device according to claim 8, characterized in that, The centrifugal atomization module (20) also includes a return pipe, the two ends of which are connected to the return component (23) and the water pump (22) respectively, so that the water pump can pump the atomized droplets recovered in the return component (23) to the liquid storage tank (10).

12. The centrifugal spray device according to any one of claims 1-11, characterized in that, The fan (30) is an axial flow fan or a centrifugal fan.

13. A plant protection device, characterized in that, It includes a mobile platform (200) and a centrifugal spray device (100) according to any one of claims 1-12, the centrifugal spray device (100) being mounted on the mobile platform (200).

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