Centrifugal atomization device, centrifugal atomization spraying apparatus and movable platform

Abstract

Disclosed are a centrifugal atomization device, a centrifugal atomization spraying apparatus and an unmanned vehicle, belonging to the technical field of plant protection equipment. The centrifugal atomization device is used for forming an atomized gas flow which is blown to the front under the effect of an airflow. The centrifugal atomization device comprises a device body, a centrifugal atomization disk (10) and a cover (40). The cover comprises a plurality of blocking members (42), the plurality of blocking members surrounding the circumference of the centrifugal atomization disk and extending downstream of the airflow. Both the centrifugal atomization spraying apparatus and the unmanned vehicle comprise the centrifugal atomization device. The centrifugal atomization device sprays droplets generated by atomization from the centrifugal atomization disk to the periphery; the centrifugal atomization device has a good atomization effect; the plurality of blocking members of the cover surround the circumference of the centrifugal atomization disk, such that the cover achieves a protective function. The centrifugal atomization spraying apparatus uses the centrifugal atomization device to cooperate with a fan to blow and spray droplets, such that the droplets can be directly delivered to target areas. The unmanned vehicle carries the centrifugal atomization spraying apparatus, thereby achieving a good spraying effect and also meeting the requirements of green technology.

Description

Centrifugal atomization device, centrifugal atomization spraying equipment and movable platform

[0001] 1. The present disclosure claims priority to the Chinese patent application No. 202411386442.4, filed on September 30, 2024, and entitled "Centrifugal atomization device, centrifugal atomization spraying equipment and movable platform", the entire contents of which are incorporated herein by reference;

[0002] 2. The present disclosure also claims priority to the Chinese patent application No. 202422415766.8, filed on September 30, 2024, and entitled "Centrifugal atomization device, centrifugal atomization spraying equipment and movable platform", the entire contents of which are incorporated herein by reference;

[0003] 3. The present disclosure claims priority to the Chinese patent application No. 202411386465.5, filed on September 30, 2024, and entitled "Centrifugal atomization device, centrifugal atomization spraying equipment and movable platform", the entire contents of which are incorporated herein by reference;

[0004] 4. The present disclosure also claims priority to the Chinese patent application No. 202422416315.6, filed on September 30, 2024, and entitled "Centrifugal atomization device, centrifugal atomization spraying equipment and movable platform", the entire contents of which are incorporated herein by reference;

[0005] 5. The present disclosure claims priority to the Chinese patent application No. 202411386548.4, filed on September 30, 2024, and entitled "Centrifugal atomization device, air-assisted spraying equipment and vehicle-mounted spraying system", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0006] The present disclosure relates to the technical field of spraying equipment, and in particular to a centrifugal atomization device, a centrifugal atomization spraying equipment and a movable platform. BACKGROUND

[0007] Currently, unmanned aerial vehicles, unmanned vehicles and other plant protection machines can carry atomizing and spraying equipment to perform spraying operations, such as spraying pesticides to crops. However, in the related art, many atomizing and spraying equipment adopt pressure atomization, that is, the liquid pump pressurizes the pesticide liquid, and the pesticide liquid is atomized into fine droplets through a nozzle to form a spray that can be sprayed to the target object such as crops. However, the atomizing and spraying equipment based on the pressure atomization technology has poor atomization effect and poor applicability. In addition, the traditional pressure atomization and spraying equipment may cause waste of pesticide liquid and potential pollution to the environment due to uneven distribution of mist droplets or too large mist droplet size during operation.

[0008] Therefore, developing a spraying equipment capable of improving atomization effect, reducing waste of pesticide liquid and reducing environmental pollution is an important direction for the development of current green agricultural technology. SUMMARY

[0009] The purposes of the embodiments of the present disclosure include, for example: to provide a centrifugal atomization device, a centrifugal spraying equipment and a movable platform, and to improve the atomization and spraying effect.

[0010] To achieve the above purposes, the present disclosure adopts the following technical solutions:

[0011] A centrifugal atomization device for forming a forward blowing atomized airflow under the cooperation of airflow, the centrifugal atomization device comprising a device main body, a centrifugal atomization disc and an outer cover.

[0012] The device main body comprises a driving device connected with the centrifugal atomization disc, and the driving device is used to drive the centrifugal atomization disc to rotate.

[0013] The outer cover comprises a plurality of barrier pieces, and the plurality of barrier pieces are arranged around the outer periphery of the centrifugal atomization disc and extend in the downstream direction of the airflow.

[0014] In an optional embodiment, the outer cover comprises a cover mounting portion and a plurality of barrier pieces, and the adjacent barrier pieces are arranged at intervals, and the cover mounting portion is connected with the device main body.

[0015] In an optional embodiment, the device main body further comprises a flow guide device arranged on the side of the centrifugal atomization disc close to the driving device, and the flow guide device is used to deliver liquid to the centrifugal atomization disc.

[0016] In an optional embodiment, the outer cover is rotatably connected with the device main body.

[0017] In an optional embodiment, when the centrifugal atomization device is in a working state, the centrifugal atomization disc and the outer cover are both rotated relative to the flow guide device, and the rotation direction of the outer cover is opposite to the rotation direction of the centrifugal atomization disc.

[0018] In an optional embodiment, the cover comprises a cover mounting portion and a plurality of cover blades, the cover mounting portion is rotatably connected with the device body, and the plurality of cover blades are arranged around the cover mounting portion;

[0019] Alternatively, the centrifugal atomization device is provided with a driving device, the driving device is connected with the cover and used for driving the cover to rotate.

[0020] In an optional embodiment, the centrifugal atomization disc comprises a disc body and at least one set of atomization groups, the disc body has an atomization surface, and the atomization groups are arranged on the atomization surface; each set of the atomization groups comprises atomization protrusions arranged at intervals around a center line of the disc body, and an atomization flow channel is formed between adjacent atomization protrusions;

[0021] In the centrifugal atomization disc, the atomization flow channels in the atomization groups in the outermost circle have a width of d1; a through channel is formed between adjacent barrier pieces, and the through channel has a width of d2;

[0022] d2 / d1<8.

[0023] In an optional embodiment, the barrier pieces are atomization teeth, and the barrier pieces have a sharp end close to one side of the centrifugal atomization disc, and the sharp end is used for breaking droplets.

[0024] In an optional embodiment, the driving device, the flow guide device and the centrifugal atomization disc are arranged in an axial direction;

[0025] The cover mounting portion is located on a side of the centrifugal atomization disc close to the driving device, and the cover mounting portion is connected with the flow guide device.

[0026] In an optional embodiment, the cover has a front side opening, the front side opening is located inside the plurality of barrier pieces, and a side of the centrifugal atomization disc away from the flow guide device is completely exposed by the front side opening.

[0027] In an optional embodiment, the driving device is an electric motor, the electric motor comprises a fixed seat and a driving shaft; the fixed seat of the electric motor, the flow guide device and the centrifugal atomization disc are arranged in an axial direction; the fixed seat of the electric motor is fixedly connected with the flow guide device, and the driving shaft of the electric motor penetrates through the flow guide device to be connected with the centrifugal atomization disc;

[0028] And / or, the flow guide device is provided with a liquid inlet, a flow guide cavity and a liquid outlet which are in communication with each other, and the liquid outlet is located on a side of the centrifugal atomization disc;

[0029] And / or, the outer cover comprises a cover mounting portion, which is a mounting ring, the mounting ring is sleeved outside the flow guide device and connected with the flow guide device, the outer cover further comprises an outer ring, the outer ring surrounds the outside of the mounting ring, the outer ring is connected with the mounting ring, and a plurality of the blocking pieces are arranged on one side of the outer ring in the axial direction, and the blocking pieces are connected with the outer ring.

[0030] In an optional embodiment, the centrifugal atomization disc has a plurality of atomization flow channels arranged around the rotation axis thereof.

[0031] The blocking piece comprises a strip body portion and an extended end portion located at the front side of the strip body portion, the strip body portion is located outside the area where the atomization flow channel is located, and the extended end portion protrudes forward relative to the area where the atomization flow channel is located.

[0032] In an optional embodiment, the centrifugal atomization device is configured such that, when the centrifugal atomization device is in a working state of atomization spraying, the rotation axis of the centrifugal atomization disc is parallel to the horizontal plane or has an angle of less than 30 degrees with the horizontal plane.

[0033] A centrifugal atomization spraying device comprises the centrifugal atomization device as described above, and further comprises a fan.

[0034] The centrifugal atomization disc, the device body and the fan are arranged in the axial direction, and the fan is used to blow the mist droplets sprayed by the centrifugal atomization disc to a target area.

[0035] In an optional embodiment, a wind guide cover is further included, two ends of the wind guide cover are respectively provided with an air inlet and an air outlet, one end of the wind guide cover provided with the air inlet is connected with the fan, and the device body of the centrifugal atomization device is located inside the wind guide cover.

[0036] In the axial direction of the centrifugal atomization spraying device, the centrifugal atomization disc is located outside the wind guide cover, or the centrifugal atomization disc is located inside the wind guide cover.

[0037] In an optional embodiment, the wind guide cover is provided with a main air supply channel, and two ends of the main air supply channel are respectively in communication with the air inlet and the air outlet.

[0038] The centrifugal atomization spraying device has a central region, a transition region and an air supply region, the transition region surrounds the outer periphery of the central region, and the air supply expansion region surrounds the outer periphery of the transition region.

[0039] The centrifugal atomization disc is located in the central region, a plurality of the blocking pieces of the outer cover are located in the transition region, and the main air supply channel is located in the air supply region.

[0040] A movable platform comprises a moving body, and further comprises the centrifugal atomization spraying device as described above, which is installed on the moving body.

[0041] The centrifugal atomization device has good atomization effect, and the outer cover has a protection function.

[0042] The centrifugal atomization device of the present disclosure fully considers the requirements of green technology in design, can effectively reduce the waste of liquid medicine and reduce the pollution to the environment, and meets the requirements of green technology. Specifically, by optimizing the design of the atomization disc and the structure of the outer cover, the device can achieve more uniform distribution of mist droplets and reduce the generation of large-particle mist droplets, thereby reducing the waste of liquid medicine and the potential pollution to the environment. At the same time, the protection function of the outer cover can avoid the interference of the liquid medicine in the spraying process, further improving the precision and stability of the spraying effect.

[0043] The centrifugal atomization spraying device can directly send the mist droplets to the target area by the centrifugal atomization device cooperating with the fan to blow and spray the mist droplets, thereby reducing the drift and waste of the liquid medicine in the air, improving the spraying efficiency, and having a wider application range.

[0044] The movable platform carries the centrifugal atomization spraying device and has good spraying effect. When the movable platform is applied in the field of agricultural and forestry plant protection, it can travel in farmland, orchard, vegetable garden and other plots, and spray pesticides to crop plants from the side, thereby having good spraying effect.

[0045] The centrifugal atomization device, the centrifugal atomization spraying device and the movable platform can improve the atomization and spraying effect.

[0046] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0047] A centrifugal atomization device comprises:

[0048] The device body comprises a driving device;

[0049] The centrifugal atomization disc is used to rotate and throw out liquid, one surface of the centrifugal atomization disc is an atomization surface, the atomization surface has a plurality of atomization flow channels arranged around the rotation axis, and the driving device is used to drive the centrifugal atomization disc to rotate around the rotation axis;

[0050] The outer cover is arranged around the centrifugal atomization disc and at least partially located on the outer side of the atomization flow channel along the radial direction of the centrifugal atomization disc, so that the liquid thrown out from the atomization flow channel is scattered after hitting the outer cover.

[0051] In an optional embodiment, the outer cover comprises a cover mounting portion and a plurality of barriers; the plurality of barriers surround the atomization flow channel and comprise a strip body portion and an extended end portion located at the front side of the strip body portion, the strip body portion is located outside the atomization flow channel, and the extended end portion protrudes forward relative to the atomization flow channel.

[0052] In an optional embodiment, the cover mounting portion is connected to the device main body.

[0053] In an optional embodiment, the outer cover is at least partially located in the direction in which the atomization flow channel is radially away from the rotation axis of the centrifugal atomization disc.

[0054] In an optional embodiment, the centrifugal atomization disc is axially arranged with the outer cover and located at the front side of the device main body.

[0055] In an optional embodiment, the centrifugal atomization disc comprises a disc body and at least one ring of atomization groups, each ring of atomization groups comprises a plurality of atomization protrusions arranged around the rotation axis; one side of the disc body in the axial direction has an atomization surface, the atomization protrusions are arranged on the atomization surface, and the atomization flow channel is formed between adjacent atomization protrusions.

[0056] In an optional embodiment, the atomization surface is located on the side of the disc body close to the device main body, and the extended end portion protrudes forward relative to the atomization surface; or, the atomization surface is located on the side of the disc body away from the device main body, the atomization protrusion located at the outermost ring of the disc body is an outer ring protrusion, and the extended end portion protrudes forward relative to the outer ring protrusion.

[0057] In an optional embodiment, the distance by which the barrier protrudes forward relative to the atomization flow channel is a protruding distance d3; the atomization protrusion located at the outermost ring of the disc body is an outer ring protrusion, the height of the outer ring protrusion is d4; d3

[0058] In an optional embodiment, the outer circumferential surface of the centrifugal atomization disc in the radial direction is a disc outer circumferential surface, the barriers are arranged radially apart from the centrifugal atomization disc, and the radial distance between the barriers and the disc outer circumferential surface is d5; 0.1≤d3 / d5≤0.3.

[0059] In an optional embodiment, the distance by which the barrier protrudes forward relative to the atomization flow channel is a protruding distance d3, and 0.5mm≤d3≤1cm.

[0060] In an optional embodiment, the barrier is an atomization tooth, and the side of the barrier close to the centrifugal atomization disc has a pointed end for breaking up liquid droplets.

[0061] In an optional embodiment, the device body further comprises a flow guide device for delivering liquid to the plurality of atomization channels of the centrifugal atomization disc; the flow guide device and the centrifugal atomization disc are arranged in an axial direction; the cover mounting portion is a mounting ring, the mounting ring is sleeved on the outside of the flow guide device, and the mounting ring is rotatably connected or fixedly connected with the flow guide device; the outer cover further comprises an outer ring, the plurality of blocking pieces are arranged on one side of the outer ring in the axial direction, the mounting ring is located on the inner side of the outer ring, and the outer ring is connected with the mounting ring.

[0062] A centrifugal atomization and spraying device comprises the centrifugal atomization device as described in the above scheme, and further comprises a fan and a wind guide cover; the fan is arranged on the side of the device body away from the centrifugal atomization disc, the wind guide cover is connected with the fan, so that the wind blown by the fan enters the wind guide cover; the centrifugal atomization disc is located on the side of the wind guide cover away from the fan, or the centrifugal atomization disc is located inside the wind guide cover.

[0063] A movable platform comprises a platform body, and further comprises the centrifugal atomization and spraying device as described in the above scheme, and the centrifugal atomization and spraying device is mounted on the platform body.

[0064] The centrifugal atomization device has the advantages that: the centrifugal atomization device is used for atomization in a centrifugal manner; at least part of the outer cover is arranged around the centrifugal atomization disc, and has a protective effect on the centrifugal atomization disc; and at least part of the structure of the outer cover around the centrifugal atomization disc is located on the radial outside of the centrifugal atomization channel, so that the outer cover also has an effect of re-atomizing the mist droplets centrifugally thrown out of the centrifugal atomization disc, and the centrifugal atomization device has a good atomization effect. The centrifugal atomization and spraying device and the movable platform have good spraying effects in the scene of spraying liquid medicine on crops.

[0065] The centrifugal atomization device, the air-blowing spraying device and the vehicle-mounted spraying system have the advantages that: the atomization and spraying effects are good, and the devices are suitable for spraying liquid medicine on crops.

[0066] To achieve the above object, the disclosure adopts the following technical scheme:

[0067] A centrifugal atomization device comprises a centrifugal atomization disc, a device body and an outer cover; the device body comprises a driving device and a flow guide device connected with each other; the flow guide device is used for delivering liquid to the centrifugal atomization disc, the driving device is connected with the centrifugal atomization disc, and the driving device is used for driving the centrifugal atomization disc to rotate; the outer cover comprises a cover mounting portion and a plurality of blocking pieces; the cover mounting portion is sleeved on the outside of the device body, and the cover mounting portion is connected with the device body; the blocking pieces are all connected with the cover mounting portion, and the plurality of blocking pieces surround the outer periphery of the centrifugal atomization disc.

[0068] In an optional embodiment, the cover mounting portion is rotatably connected with the device body.

[0069] In an optional embodiment, the driving device comprises a fixed seat and a driving shaft, the fixed seat, the flow guide device and the centrifugal atomizing disc are arranged in an axial direction, the fixed seat is connected with the flow guide device, and the driving shaft is connected with the centrifugal atomizing disc; the cover mounting portion is sleeved outside the flow guide device, and the cover mounting portion is rotatably connected with the flow guide device.

[0070] In an optional embodiment, the device body is externally provided with a connecting track, and the cover mounting portion is rotatably connected with the connecting track.

[0071] In an optional embodiment, the cover mounting portion is detachably connected with the device body.

[0072] In an optional embodiment, the connecting track comprises a first track member and a second track member, the first track member is connected with the device body, and the second track member is detachably connected with the first track member.

[0073] In an optional embodiment, the first track member and the second track member are arranged in an axial direction at intervals, a mounting groove is defined between the first track member and the second track member, and an outer periphery of the connecting track forms a groove mouth of the mounting groove; the cover mounting portion is at least partially accommodated in the mounting groove, so that the cover mounting portion is rotatably mounted on the connecting track.

[0074] In an optional embodiment, the cover mounting portion comprises a ring body and a ring-shaped protrusion arranged inside the ring body, the ring-shaped protrusion is clamped into the mounting groove, part of the ring body surrounds an outer portion of the first track member, and part of the ring body surrounds an outer portion of the second track member.

[0075] In an optional embodiment, the connecting track further comprises a support portion arranged between the first track member and the second track member, the support portion is located inside the cover mounting portion, the first track member and the second track member are annular plates, and the first track member and the second track member are both sleeved outside the flow guide device or the fixed seat.

[0076] In an optional embodiment, the outer cover comprises a plurality of fan blades, the plurality of fan blades surround an outer portion of the cover mounting portion, and the fan blades are connected with the cover mounting portion; or, the centrifugal atomizing device is provided with a driver, the driver is connected with the cover mounting portion, and the driver is used to drive the outer cover to rotate.

[0077] In an optional embodiment, the flow guide device is provided with a liquid inlet, a flow guide cavity and a liquid outlet which are in communication with each other, and the liquid outlet is located on one side of the centrifugal atomizing disc; and / or, the outer cover further comprises an outer ring, the outer ring surrounds an outer portion of the cover mounting portion, the outer ring is connected with the cover mounting portion, and a plurality of blocking pieces are arranged on one side of the outer ring in an axial direction; one end of the blocking piece is connected with the outer ring, and the other end extends away from the outer ring in an axial direction.

[0078] The application discloses a wind-sending spraying device, which comprises a centrifugal atomization device, a fan and a wind guide cover.

[0079] The application further discloses a vehicle-mounted spraying system, which comprises the wind-sending spraying device and a plant protection vehicle.

[0080] The centrifugal atomization device can generate mist droplets in a centrifugal atomization mode, and the generated mist droplets are more uniform and have a good atomization effect. The centrifugal atomization device can generate mist droplets in a centrifugal atomization mode, and the generated mist droplets are more uniform and have a good atomization effect. The centrifugal atomization device can generate mist droplets in a centrifugal atomization mode, and the generated mist droplets are more uniform and have a good atomization effect. BRIEF DESCRIPTION OF DRAWINGS

[0081] The application will be further described in detail below with reference to the drawings and embodiments.

[0082] Fig. 1 is a structural schematic view of a centrifugal atomization device according to an embodiment of the application.

[0083] Fig. 2 is an enlarged view of part A in Fig. 1.

[0084] Fig. 3 is a structural schematic view of a centrifugal atomization device according to another embodiment of the application.

[0085] Fig. 4 is an enlarged view of part B in Fig. 3.

[0086] Fig. 5 is a sectional view of A-A in Fig. 3.

[0087] Fig. 6 is an enlarged view of part C in Fig. 5.

[0088] Fig. 7 is an exploded schematic view of a guide device, an outer cover and a centrifugal atomization device according to an embodiment of the application.

[0089] Fig. 8 is an exploded schematic view of a guide device, an outer cover and a centrifugal atomization device according to another embodiment of the application.

[0090] Fig. 9 is an enlarged view of part D in Fig. 8.

[0091] Fig. 10 is a structural schematic view of a centrifugal atomization disc in a centrifugal atomization device according to an embodiment of the application.

[0092] Fig. 11 is a structural schematic view of an outer cover in a centrifugal atomization device according to an embodiment of the application.

[0093] Fig. 12 is a structural schematic view of a wind-sending spraying device according to an embodiment of the application.

[0094] Fig. 13 is a structural schematic diagram of a centrifugal atomization spraying device according to an embodiment of the present disclosure (the part in bold dashed line is used to show the flow direction of the mist droplets);

[0095] Fig. 14 is a scene diagram of a spraying operation of a movable platform according to an embodiment of the present disclosure (the mist droplets are omitted in the diagram);

[0096] Fig. 15 is a front view of a centrifugal atomization spraying device according to an embodiment of the present disclosure;

[0097] Fig. 16 is a distribution diagram of various regions of a centrifugal atomization spraying device according to an embodiment of the present disclosure from the front;

[0098] Fig. 17 is an assembly schematic diagram of a flow guide device, an outer cover and a centrifugal atomization disc according to an embodiment of the present disclosure;

[0099] Fig. 18 is an enlarged view of part E in Fig. 17;

[0100] Figs. 1 to 18: 10 - centrifugal atomization disc; 11 - disc body; 1101 - atomization surface; 12 - atomization protrusion; 1201 - atomization flow channel; 20 - flow guide device; 21 - liquid inlet; 22 - flow guide cavity; 23 - liquid outlet; 30 - driving device; 31 - fixing seat; 32 - driving shaft; 40 - outer cover; 41 - cover mounting part; 42 - barrier; 4201 - through passage; 421 - tip; 43 - outer ring; 44 - fan blade; 61 - fan; 62 - air guide cover; 6201 - first widening air channel; 6202 - second widening air channel; 621 - air guide outer shell; 622 - first tongue; 623 - second tongue; 71 - connecting rail; 80 - mounting seat; 100 - centrifugal atomization spraying device; 200 - movable main body.

[0101] Fig. 19 is an assembly schematic diagram of a flow guide device, an outer cover and a centrifugal atomization disc in a centrifugal atomization device according to an embodiment of the present disclosure;

[0102] Fig. 20 is an enlarged view of part A in Fig. 19;

[0103] Fig. 21 is a sectional view of a flow guide device, an outer cover and a centrifugal atomization disc in an assembled state in a centrifugal atomization device according to an embodiment of the present disclosure;

[0104] Fig. 22 is an enlarged view of part B in Fig. 21;

[0105] Fig. 23 is a structural schematic diagram of a centrifugal atomization disc in a centrifugal atomization device according to an embodiment of the present disclosure;

[0106] Fig. 24 is a structural schematic diagram of a centrifugal atomization disc in a centrifugal atomization device according to an embodiment of the present disclosure;

[0107] Figure 25 is an exploded view of the flow guide device, the outer cover, and the centrifugal atomization disc in the centrifugal atomization device according to an embodiment of the present disclosure;

[0108] Figure 26 is a structural view of the centrifugal atomization device according to an embodiment of the present disclosure;

[0109] Figure 27 is an enlarged view of part C in Figure 26;

[0110] Figure 28 is a sectional view of the centrifugal atomization device according to an embodiment of the present disclosure;

[0111] Figure 29 is a scene view of the movable platform performing spraying according to an embodiment of the present disclosure (the mist droplets are omitted in the figure);

[0112] Figure 30 is a structural view of the centrifugal atomization spraying device according to an embodiment of the present disclosure;

[0113] Figure 31 is a structural view of the centrifugal atomization spraying device according to an embodiment of the present disclosure (the bold dashed lines in the figure are used to show the flow direction of the mist droplets);

[0114] Figure 32 is a front view of the centrifugal atomization spraying device according to an embodiment of the present disclosure;

[0115] Figure 33 is a view of the distribution of various regions of the centrifugal atomization spraying device according to an embodiment of the present disclosure from the front;

[0116] In Figures 19-33: 10 - centrifugal atomization disc; 11 - disc body; 1101 - atomization surface; 1102 - disc outer peripheral surface; 12 - atomization protrusion; 121 - outer ring protrusion; 1201 - atomization flow channel; 20 - flow guide device; 21 - liquid inlet; 22 - flow guide cavity; 23 - liquid outlet; 30 - driving device; 31 - fixing seat; 32 - driving shaft; 40 - outer cover; 41 - cover mounting portion; 42 - barrier; 4201 - through passage; 421 - tip; 422 - extended end portion; 423 - strip body portion; 43 - outer ring; 61 - fan; 62 - air guide cover; 6201 - first widened air channel; 6202 - second widened air channel; 621 - air guide outer shell; 622 - first tongue; 623 - second tongue; 71 - connecting track; 80 - mounting seat; 100 - centrifugal atomization spraying device; 200 - platform body.

[0117] Figure 34 is a structural view of the centrifugal atomization device according to an embodiment of the present disclosure;

[0118] Figure 35 is an enlarged view of part A in Figure 34;

[0119] Figure 36 is a sectional view of the centrifugal atomization device according to an embodiment of the present disclosure;

[0120] Figure 37 is a schematic view of the flow guide device, the connecting track, the outer cover, and the centrifugal atomization disc in the centrifugal atomization device according to an embodiment of the present disclosure when assembled;

[0121] Fig. 38 is an enlarged view of part B in Fig. 37;

[0122] Fig. 39 is a sectional view of the connecting track in the centrifugal atomization device according to an embodiment of the present disclosure;

[0123] Fig. 40 is a schematic view of the flow guide device, the connecting track and the outer cover in the centrifugal atomization device according to an embodiment of the present disclosure in a disassembled state;

[0124] Fig. 41 is an enlarged view of part C in Fig. 40;

[0125] Fig. 42 is a schematic view of the flow guide device, the connecting track, the outer cover and the centrifugal atomization disc in the centrifugal atomization device according to an embodiment of the present disclosure in a disassembled state (the connecting track is in an assembled state in the figure);

[0126] Fig. 43 is an enlarged view of part D in Fig. 42;

[0127] Fig. 44 is a schematic view of the flow guide device, the connecting track, the outer cover and the centrifugal atomization disc in the centrifugal atomization device according to an embodiment of the present disclosure in a disassembled state (the connecting track is in an assembled state in the figure);

[0128] Fig. 45 is an enlarged view of part E in Fig. 44;

[0129] Fig. 46 is a schematic view of the air-blowing spraying device according to an embodiment of the present disclosure;

[0130] Fig. 47 is a schematic view of the air-blowing spraying device according to an embodiment of the present disclosure (the thick dashed line in the figure is used to show the flow direction of the mist droplets);

[0131] Fig. 48 is a schematic view of the working scene of the vehicle-mounted spraying system according to an embodiment of the present disclosure (the mist droplets are omitted in the figure);

[0132] Fig. 49 is a schematic view of the outer cover with fan blades according to an embodiment of the present disclosure;

[0133] Fig. 50 is a front view of the centrifugal atomization spraying device according to an embodiment of the present disclosure;

[0134] Fig. 51 is a front view of the centrifugal atomization spraying device according to an embodiment of the present disclosure;

[0135] Fig. 34 to Fig. 51: 10 - centrifugal atomization disc; 11 - disc body; 1101 - atomization surface; 12 - atomization protrusion; 1201 - atomization flow channel; 20 - flow guide device; 21 - liquid inlet; 22 - flow guide cavity; 23 - liquid outlet; 24 - mounting table; 30 - driving device; 31 - fixing seat; 32 - driving shaft; 40 - cover; 41 - cover mounting portion; 411 - ring body; 4111 - first matching surface; 4112 - second matching surface; 412 - annular protrusion; 42 - blocking piece; 4201 - through passage; 421 - tip; 43 - outer ring; 44 - fan blade; 61 - fan; 62 - air guide cover; 6201 - first widened air channel; 6202 - second widened air channel; 621 - air guide shell; 622 - first tongue; 623 - second tongue; 70 - connecting rail; 701 - mounting groove; 71 - first rail member; 711 - first limiting surface; 72 - second rail member; 721 - second limiting surface; 73 - support portion; 80 - mounting seat; 90 - device main body; 100 - air-blowing spraying equipment; 200 - plant protection vehicle. DETAILED DESCRIPTION

[0136] The present disclosure contains three inventive concepts, wherein the first inventive concept will be introduced in combination with Fig. 1 to Fig. 18; the second inventive concept will be introduced in combination with Fig. 19 to Fig. 33; and the third inventive concept will be introduced in combination with Fig. 34 to Fig. 51. The three inventive concepts support each other and together constitute the essence of the invention of the present disclosure. In the absence of conflicts, the above-mentioned three inventive concepts can be used in combination with each other.

[0137] The specific embodiments under the guidance of the first inventive concept will be introduced in combination with Fig. 1 to Fig. 18.

[0138] In order to make the technical problems solved by the present disclosure, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present disclosure will be further described in detail below in combination with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present disclosure.

[0139] In the description of the present disclosure, unless otherwise explicitly specified and limited, the terms "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected or integrated; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood according to the specific circumstances.

[0140] In the present disclosure, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0141] The centrifugal atomization device of the present disclosure fully considers the requirements of green technology in design, and aims to realize an efficient and environmentally friendly spraying process through intelligent and automated technical means. Specifically, a centrifugal force is generated by a high-speed rotating centrifugal atomization disc, and the liquid is thrown out by the centrifugal force. During the process of throwing out, the liquid is dispersed and atomized to form fine liquid particles, and then the atomized liquid droplets are sprayed out of the centrifugal atomization disc. Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, the atomization effect is better, the generated mist droplets are more uniform, the waste of liquid medicine can be effectively reduced, and the utilization rate of liquid medicine is improved.

[0142] Spraying equipment is widely used, for example: in the field of agricultural and forestry plant protection, liquid such as pesticide and growth liquid is sprayed to the target area through the spraying device; in the field of killing and disinfecting, bactericidal liquid and disinfectant liquid is sprayed to the target area through the spraying device; and the like. Many spraying equipment applied in the field of agricultural and forestry plant protection and the field of killing and disinfecting adopts pressure atomization technology, uses compressed air or high-pressure nitrogen as power, and sprays liquid (such as pesticide) out of the nozzle to split the liquid into fine mist droplets. However, the spraying equipment using the pressure atomization method generally has poor atomization effect and is applicable in some scenarios. For example: first, the mist droplets generated by the pressure atomization method may be large and unevenly distributed; second, the controllability is poor, and it is difficult to accurately control the atomization; third, the nozzle is easy to be blocked.

[0143] Based on this, the present disclosure provides a centrifugal atomization device which is suitable for being applied in a centrifugal atomization spraying equipment including a fan. The centrifugal atomization device generates a centrifugal force by a high-speed rotating centrifugal atomization disc, and uses the centrifugal force to throw out liquid. During the process of throwing out, the liquid is dispersed and atomized to form fine liquid particles, and then the atomized liquid droplets are sprayed out of the centrifugal atomization disc. Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, the atomization effect is better, and the centrifugal atomization method is suitable for being applied in the field of agricultural and forestry plant protection pesticide spraying.

[0144] The centrifugal atomization device of the present disclosure is also provided with an outer cover, which surrounds the outer periphery of the centrifugal atomization disc through a plurality of blocking pieces of the outer cover to protect the high-speed rotating centrifugal atomization disc. When the centrifugal atomization device is used to spray liquid (such as pesticide) on agricultural and forestry crops, foreign matters such as branches and leaves can be prevented from reaching the centrifugal atomization disc to cause damage to the centrifugal atomization disc. The outer cover can also prevent the crops from being damaged by the centrifugal atomization disc and prevent the centrifugal atomization disc from breaking to cause harm to the operator.

[0145] The present disclosure also provides a centrifugal atomization spraying device, which can be installed on a movable plant protection device such as an unmanned vehicle, an unmanned plant protection aircraft, etc., or fixed in the environment for use, and of course does not exclude the handheld use mode. The centrifugal atomization spraying device sprays atomized droplets radially at the front end through the centrifugal atomization device, and the fan blows air at the rear of the centrifugal atomization device to blow the atomized and sprayed droplets to the target area. The centrifugal atomization spraying device can expand the coverage range of the fog field, and has high spraying efficiency and good effect.

[0146] The present disclosure also provides a movable platform, which can be but is not limited to an unmanned vehicle or a manned vehicle.

[0147] It should be noted that in the drawings of the present disclosure, the y direction and the x direction are marked in the drawings for the convenience of describing the relative positions between the centrifugal atomization device and the various components inside the centrifugal atomization spraying device. The y-axis direction is consistent with the direction of the central axis of the centrifugal atomization spraying device and the central axis of the centrifugal atomization spraying device, and the x direction is the radial direction.

[0148] Please refer to FIGS. 1-14, the following detailed description of the structure of the centrifugal atomization device (as shown in FIGS. 1-11), the centrifugal atomization spraying device 100 (as shown in FIGS. 12 and 13), and the movable platform (as shown in FIG. 14, the movable platform in FIG. 14 is an unmanned vehicle).

[0149] Referring to FIGS. 1-11, the centrifugal atomization device is used to form a forward blowing atomized airflow under the cooperation of airflow. For example, in the earth coordinate system, if the centrifugal atomization device is located on the left side, the airflow blows from right to left at the rear of the centrifugal atomization device, and the mist droplets sprayed by the centrifugal atomization device can form a left blowing atomized airflow under the action of the airflow. For another example, in the earth coordinate system, if the centrifugal atomization device is located on the lower side, the airflow blows from back to front at the rear of the centrifugal atomization device, and the mist droplets sprayed by the centrifugal atomization device can form a downward blowing atomized airflow under the action of the airflow.

[0150] The centrifugal atomization device includes a device main body, a centrifugal atomization disc 10, and an outer cover 40, and the device main body includes a flow guide device 20. In an optional embodiment, the device main body further includes a driving device 30.

[0151] The flow guide device 20 is used to deliver liquid to the centrifugal atomization disc 10. The driving device 30 includes a fixed seat 31 and a driving part. The fixed seat 31 of the driving device 30 is connected with the flow guide device 20 and is relatively fixed. The driving part is connected with the centrifugal atomization disc 10. The driving device 30 is used to drive the centrifugal atomization disc 10 to rotate around the first axis, which is the central axis of the centrifugal atomization disc 10.

[0152] Exemplarily, the centrifugal atomization disc 10 is provided with a plurality of atomization flow channels 1201 distributed around the first axis. The flow guide device 20 provides a flow guide channel. The flow guide device 20 is used to be connected with a liquid supply device and is used to deliver liquid of the liquid supply device to the centrifugal atomization disc 10, so that the liquid can enter the plurality of atomization flow channels 1201. The driving device 30 can be, but is not limited to, a motor. The centrifugal atomization disc 10 is driven to rotate by the driving device 30. The liquid can be centrifugally thrown out, so that the atomized liquid droplets are sprayed to the periphery of the centrifugal atomization disc 10.

[0153] The cover 40 includes a plurality of barriers 42. The plurality of barriers 42 surround the outer periphery of the centrifugal atomization disc 10 and extend in the downstream direction of the airflow. The centrifugal atomization device is located at the air outlet of an air supply mechanism (such as a fan), so that the centrifugal atomization disc 10 is under the action of the airflow field. The outer periphery of the centrifugal atomization disc 10 is provided with a protective cover body (the protective cover body includes a plurality of barriers 42 surrounding the outer periphery of the centrifugal atomization disc 10). The barriers 42 of the protective cover body extend along the wind direction to form a long strip structure, so as to avoid the accumulation of liquid droplets on the barriers 42 of the protective cover body when the liquid droplets thrown out by the centrifugal atomization disc are blown onto the barriers 42 of the protective cover body by the airflow.

[0154] In an optional embodiment, the cover 40 includes a cover mounting part 41 and a plurality of barriers 42. The barriers 42 are connected with the cover mounting part 41. The cover mounting part 41 is connected with the device main body. Referring to FIGS. 1 to 6 and 12, the plurality of barriers 42 surround the outer periphery of the centrifugal atomization disc 10 and are arranged at intervals between adjacent barriers 42. In this way, the plurality of barriers 42 surround the outside of the centrifugal atomization disc 10, so as to protect the centrifugal atomization disc 10.

[0155] Among them, the barriers 42 extend away from the driving device 30. In an optional embodiment, the barriers 42 are strip structures extending in the axial direction. The centrifugal atomization disc 10 has a certain axial height. The barriers 42 extending along the axis by a certain distance surround the outer periphery of the centrifugal atomization disc 10. The effects of protection, deceleration of mist droplets, and secondary atomization of mist droplets are better.

[0156] The centrifugal atomization device can be applied to spraying pesticides on crops. Exemplarily, a centrifugal atomization spraying device 100 including the centrifugal atomization device and a fan 61 and the like is mounted on a movable platform, and when it is necessary to spray pesticides on pitaya plants, corn plants and the like, the unmanned vehicle travels in the field, the centrifugal atomization device works to throw and spray the atomized liquid droplets around the centrifugal atomization disc 10, and the fan 61 blows the atomized liquid droplets to the target plants.

[0157] The centrifugal atomization device generates centrifugal force through the high-speed rotating centrifugal atomization disc 10, uses the centrifugal force to throw out the liquid, and forms fine liquid particles after the liquid is dispersed and atomized during the liquid throwing process, and then sprays the atomized liquid droplets out of the centrifugal atomization disc 10. Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, the atomization effect is better, and the centrifugal atomization device is suitable for application in the field of agricultural and forestry plant protection pesticide spraying.

[0158] The centrifugal atomization device of the present disclosure has good atomization effect: first, the liquid can be dispersed to form liquid droplets with smaller particle size, and the droplet size can be controlled to be relatively uniform, avoiding the situation that some liquid droplets have large particle size and some liquid droplets have small particle size; second, a wider spraying coverage range can be formed, so that the pesticide solution can more uniformly cover the target area, and the spraying effect is good; third, the controllability is strong, the size of the droplets and the spraying amount can be controlled by adjusting the rotation speed, the liquid inlet amount and the like, different operation requirements can be met, and accurate atomization control can be realized; fourth, compared with the pressure nozzle, the flow channel inside the centrifugal atomization disc 10 is not easy to be blocked.

[0159] The cover 40 plays a role in protecting the centrifugal atomization disc 10. Exemplarily, if corn leaves or other leaves or foreign matters accidentally stretch to the area near the centrifugal atomization disc 10, they will be blocked by the blocking pieces 42 surrounding the centrifugal atomization disc 10, and the blocking pieces 42 of the cover 40 play a role in blocking leaves and foreign matters from approaching the centrifugal atomization disc 10. In the state that the centrifugal atomization disc 10 is rotating and working, the blocking pieces 42 can prevent leaves and the like from being sucked into the centrifugal atomization disc 10, and prevent the centrifugal atomization disc 10 from being damaged or the crops from being damaged. In the standby state that the centrifugal atomization disc 10 is not rotating, the blocking pieces 42 can block leaves and the like, and prevent the foreign matters from scratching or damaging the centrifugal atomization disc 10. It can be understood that the adjacent blocking pieces 42 are spaced from each other, and a through channel 4201 is formed between the adjacent blocking pieces 42, the atomized liquid droplets thrown out by the centrifugal atomization disc 10 can pass through the through channel 4201, and the setting of the cover 40 does not affect the function of the centrifugal atomization disc 10 in throwing out the atomized liquid droplets.

[0160] The centrifugal atomization device of the present disclosure, the centrifugal atomization disc 10 is matched with a plurality of blocking pieces 42 of the outer cover 40 outside the periphery, which can protect the centrifugal atomization disc 10 from being damaged by foreign matter, protect the crops from being damaged by the centrifugal atomization disc 10, and protect the personnel from being injured by the centrifugal atomization disc 10, and can solve the problem of direct exposure of the centrifugal atomization disc 10.

[0161] Referring to FIGS. 12-14, the centrifugal atomization spraying device 100 comprises the centrifugal atomization device of the present disclosure, and further comprises a fan 61. The centrifugal atomization disc 10, the device body and the fan 61 are arranged in the axial direction. The centrifugal atomization device is used for atomizing the liquid to be sprayed by the centrifugal atomization disc 10, and is used for spraying the atomized liquid by the centrifugal atomization disc 10 in the radial direction of the centrifugal atomization spraying device 100. The spraying effect of the centrifugal atomization disc 10 is similar to that shown in FIG. 13 (the thick dashed line in FIG. 13 is only used to provide a schematic of the path of the mist droplets, and cannot be used as the only limitation of the present disclosure). The fan 61 is located at the axial rear of the centrifugal atomization disc 10, and the fan 61 is used to blow the mist droplets sprayed by the centrifugal atomization disc 10 to the target area.

[0162] The centrifugal atomization spraying device 100 can atomize the pesticide by the centrifugal atomization disc 10 and the fan 61. Compared with the conventional pressure atomization spraying, the centrifugal atomization spraying device has the following effects: good atomization effect; finer atomized droplets can be obtained, and the fine mist droplets can penetrate the crop canopy more deeply, cover more leaf and fruit surfaces, and improve the utilization rate and control effect of the pesticide; the centrifugal atomization spraying device can control the rotational speed by adjusting the motor voltage, and then accurately control the droplet size. This flexibility allows precise adjustment of pesticide spraying according to different crop types, growth stages and pest conditions; the centrifugal atomization spraying is suitable for various pesticide formulations, including but not limited to powders, suspensions, emulsifiable concentrates and other poorly water-soluble pesticides, which expands the selection range of pesticides; the spraying efficiency can be improved, and the centrifugal atomization spraying combined with the fan 61 blowing can directly deliver the mist droplets to the target area, reducing the drift and waste of the pesticide in the air, and improving the spraying efficiency; not only suitable for pesticide spraying in large areas of farmland, but also suitable for fine management of small areas of crops such as orchards and vegetable gardens.

[0163] The movable platform of the present disclosure carries the centrifugal atomization spraying device 100, which can realize the walking of the unmanned vehicle in the field and the automatic spraying of the pesticide by the cooperation of the centrifugal atomization spraying device, the fan 61 and the unmanned vehicle body 200. The technology of the present disclosure has high application value in modern agriculture. This spraying method is suitable for various crops, has adjustable spraying amount and droplet size, good atomization spraying effect, improves the work efficiency and reduces the labor cost, etc.

[0164] The movable platform of the present disclosure is suitable for spraying pesticides on various types of crops. For example, for low plant crops (peanuts, sweet potatoes, etc.), the plant height of these crops is relatively low. By adjusting the angle of the centrifugal atomization spraying device 100, the various parts of the plants can be easily covered, ensuring uniform pesticide spraying. For medium-height plant crops (cotton, soybeans, shelf cucumbers, shelf eggplants, corn, lemons, wheat, etc.), the centrifugal atomization device can effectively blow pesticide droplets onto the leaves and stems of the crops with the cooperation of the appropriate fan 61, improving the spraying effect.

[0165] The movable platform is equipped with a centrifugal atomization spraying device 100. The movable platform can adjust the driving speed according to the height and density of the crops. The spraying angle can be adjusted by adjusting the angle of the centrifugal atomization spraying device 100, and the target area can be accurately sprayed.

[0166] The movable platform is an unmanned vehicle and is applied to the field of agricultural and forestry plant protection. It can drive in farmland, orchards, vegetable gardens, and other plots, as shown in FIG. 14. The vehicle sprays pesticides from the side to the plant, and the spraying effect is good. The centrifugal atomization spraying device 100 of the unmanned vehicle uses a design in which the centrifugal atomization device cooperates with the fan 61 to blow. The droplets have a certain penetration, and the droplets can more accurately reach the target plant crops. The droplet size is small and evenly distributed. The droplets can enter the interior of the plant with the airflow from the gaps between the leaves, which is beneficial to more completely cover the leaves, fruits, and other parts of the crops. It can improve the problem of uneven acceptance of pesticide solution by the outer and inner areas of the crops (for example, the outer end of the leaf can receive pesticide solution, but the root may not receive pesticide solution), improve the problem of uneven acceptance of pesticide solution by the top and bottom of the crops, and improve the prevention and control effect.

[0167] Optionally, in order to obtain a better spraying effect, the centrifugal atomization device is configured such that, in the working state of the atomization spraying, the rotation axis of the centrifugal atomization disc 10 is parallel to the horizontal plane or the included angle with the horizontal plane is less than 30 degrees. As shown in FIG. 14, in the working state of the centrifugal atomization device, the back of the centrifugal atomization disc 10 is substantially left or right, and the fan 61 can spray pesticide solution to the plants on the left or right side of the movable platform 200. In the figure, L1 indicates the rotation axis of the centrifugal atomization disc 10, and L2 indicates the horizontal plane. The rotation axis L1 of the centrifugal atomization disc 10 is substantially parallel to the horizontal plane L2, that is, the axial direction of the centrifugal atomization device is arranged in the approximate horizontal direction, and the rotation plane of the centrifugal atomization disc 10 is arranged in the approximate vertical plane perpendicular to the horizontal plane.

[0168] The inventor finds that, when the centrifugal atomization device is working, the centrifugal atomization disc 10 rotates to spin out the atomized droplets, and some droplets may be deposited on the blocking member 42. The deposited droplets are the droplets that are not sprayed out and are retained in the vicinity.

[0169] If the position of the outer cover 40 is fixed during the atomization work, for the case that the centrifugal atomization device is mounted on the unmanned aerial vehicle, the centrifugal atomization device generally sprays the liquid from above the crops, and when the unmanned aerial vehicle sprays the liquid downward, the blocking member 42 extends downward, and it is not easy for large droplets to accumulate on the blocking member 42, or the accumulated large droplets will fall to the ground along the blocking member 42 under the action of gravity.

[0170] However, for the case that the centrifugal atomization device is mounted on a movable platform, the centrifugal atomization device generally sprays the liquid to the crops from the side of the crops (for example, from the left side or the right side), and in most cases, the axis of the centrifugal atomization disc 10 is parallel to the ground (for example, when spraying horizontally to the left), or the axis of the centrifugal atomization disc 10 is at a certain angle with the ground (for example, when spraying upward to the left or downward to the left). In this way, the blocking member 42 is mostly parallel to the ground or is at an angle of 45 degrees with the ground, and at this time, the blocking member 42 may accumulate some droplets to form a deposit. The droplets accumulated on the blocking member 42 may cause one or more of the following problems:

[0171] First, the user sees the droplets deposited on the blocking member 42, which makes the user feel that this part of the droplets has not been blown out for spraying, which is a waste and affects the user experience;

[0172] Second, if the droplets fall downward after the centrifugal atomization device stops working, they may fall on the movable body 200 and contaminate the movable body 200;

[0173] Third, in some cases, these droplets accumulated on the blocking member 42 may also be sucked back by the fan 61, and the sucked back droplets contaminate the flow guide device 20, the driving device 30, and the fan 61.

[0174] Optionally, referring to FIGS. 1, 2, 5, 6, 7, and 8, the centrifugal atomization device configures the outer cover 40 to be rotatable. The outer cover 40 is rotatably connected with the flow guide device 20, or the outer cover 40 is rotatably connected with the fixed seat 31 (such as a motor seat) of the driving device 30.

[0175] In an optional embodiment, an annular connecting track 71 is arranged outside the flow guide device 20, and a cover mounting portion 41 of the outer cover 40 is rotatably mounted on the connecting track 71.

[0176] In optional embodiments, based on the rotatable installation of the outer cover 40, the outer cover 40 in the centrifugal atomization device and the centrifugal atomization spraying device 100 is configured to rotate in the opposite direction of the centrifugal atomization disc 10 when the centrifugal atomization device is in operation, that is, the centrifugal atomization disc 10 rotates in the first direction to spray the atomized liquid droplets outward, and the outer cover 40 rotates in the second direction, and the first direction is opposite to the second direction. For example, the first direction is clockwise and the second direction is counterclockwise, or the first direction is counterclockwise and the second direction is clockwise. It can be understood that when the centrifugal atomization device is in operation, the outer cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, and when the liquid droplets sprayed by the centrifugal atomization disc 10 hit the barrier 42, the barrier 42 has a movement trend opposite to the liquid droplets due to the opposite rotation of the outer cover 40, and the liquid droplets are more likely to leave the barrier 42.

[0177] When the centrifugal atomization device is in operation, the outer cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, which can bring at least one of the following effects:

[0178] First, it can reduce the liquid deposited on the barrier 42, avoid or reduce the formation of a small amount of large droplets on the barrier 42, and further improve the user experience, avoiding the subsequent dripping of the liquid droplets deposited on the barrier 42 from polluting other areas.

[0179] Second, in the centrifugal atomization spraying device 100 of the present disclosure, the barrier 42 of the outer cover 40 rotating in the opposite direction can reduce the speed of the centrifugal sprayed liquid droplets, so that the liquid droplets can be more easily controlled by the wind field blown by the fan 61, so that the atomized liquid droplets can be stably blown to the target area by the fan 61, and the mist field is more stable.

[0180] In optional embodiments, when the centrifugal atomization device is in operation, the outer cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, and the rotation speed of the outer cover 40 is lower than that of the centrifugal atomization disc 10.

[0181] It should be noted that the rotatable centrifugal atomization device of the outer cover 40 can be applied to unmanned vehicles and unmanned aerial vehicles.

[0182] In other embodiments, the outer cover 40 can also be configured to be non-rotatable, and the outer cover 40 is fixed relative to the flow guide device 20.

[0183] Wherein, for the rotatable scheme of the outer cover 40, the rotation of the outer cover 40 is driven by the driving device 30, at this time, the outer cover 40 is configured to be actively rotatable. Alternatively, the rotation of the outer cover 40 is driven by the blowing wind of the fan 61, at this time, the outer cover 40 is configured to be actively rotatable. Alternatively, the rotation of the outer cover 40 is driven by the liquid droplets splashed by the centrifugal atomization disc 10, so that the outer cover 40 rotates.

[0184] The following provides several ways of rotating the outer cover 40.

[0185] One of the rotating modes of the outer cover 40: the outer cover 40 includes a cover mounting portion 41 and a plurality of fan blades 44, the cover mounting portion 41 is rotatably connected with the device body, for example, the cover mounting portion 41 is rotatably connected with the flow guide device 20, and the plurality of fan blades 44 are arranged around the cover mounting portion 41. In this way, when the centrifugal atomization device is applied to the centrifugal atomization spraying equipment 100 with the fan 61, the wind blown by the fan 61 is used to blow the atomized liquid droplets splashed by the centrifugal atomization disc 10 to the target object, and the wind blown by the fan 61 can also act on the fan blades 44 of the outer cover 40 to drive the outer cover 40 to rotate. By controlling the rotation direction of the fan blades 44, the rotating direction of the outer cover 40 can be opposite to the rotating direction of the centrifugal atomization disc 10 when the centrifugal atomization device is in the working state.

[0186] The second rotating mode of the outer cover 40: the centrifugal atomization device includes a driver connected with the outer cover 40 and used to drive the outer cover 40 to rotate. Wherein, the driving device 30 used to drive the centrifugal atomization disc 10 to rotate can be but is not limited to a motor, and the driver used to drive the outer cover 40 to rotate can be but is not limited to a motor. The rotating speed of the outer cover 40 does not need to be too high.

[0187] In the optional embodiment, the centrifugal atomization device is configured such that the rotating direction of the outer cover 40 is opposite to the rotating direction of the centrifugal atomization disc 10 when the centrifugal atomization device is in the working state.

[0188] The third rotating mode of the outer cover 40: the driving device 30 of the centrifugal atomization device includes a fixed seat 31 and a driving portion, the driving portion is a driving shaft 32, and the centrifugal atomization disc 10 and the outer cover 40 are driven to rotate in opposite directions by the same driving shaft 32. For example, the end of the driving shaft 32 is connected with the centrifugal atomization disc 10, the outer cover 40 is sleeved on the driving shaft 32, and a transmission assembly is arranged between the outer cover 40 and the driving shaft 32. When the driving shaft 32 rotates in the positive direction, the centrifugal atomization disc 10 rotates in the positive direction, and the driving shaft 32 can drive the outer cover 40 to rotate in the opposite direction through the transmission of the transmission assembly.

[0189] Optionally, referring to FIG. 1, FIG. 2, FIG. 7, FIG. 10, the centrifugal atomization disc 10 comprises a disc body 11 and at least one set of atomization groups, the disc body 11 has an atomization surface 1101, and the atomization groups are arranged on the atomization surface 1101. Each set of atomization groups comprises atomization protrusions 12 distributed at intervals around the center line of the disc body 11, and atomization flow channels 1201 are formed between adjacent atomization protrusions 12.

[0190] The baffles 42 in the cover 40 also have the effect of reducing the speed of the spray droplets of the centrifugal atomization disc 10 and performing secondary atomization on the droplets. In the centrifugal atomization disc 10, the atomization groups in the outermost circle, as shown in FIG. 2, FIG. 10, the width of the atomization flow channel 1201 is d1. The through passages 4201 are formed between adjacent baffles 42, as shown in FIG. 2, the width of the through passage 4201 is d2.

[0191] The density of the baffles 42 in the cover 40 needs to be reasonably configured, and the density of the baffles 42 is controlled by d2 / d1<8, wherein the larger the value of d2 / d1, the more sparse the baffles 42 in the cover 40 are configured, and the smaller the value of d2 / d1, the denser the baffles 42 in the cover 40 are configured.

[0192] The density of the baffles 42 in the cover 40 has an effect on the effect of the centrifugal atomization device spraying outward, if the baffles 42 in the cover 40 are too dense, the spray amount will be reduced. If the baffles 42 in the cover 40 are too sparse, the protection effect of the baffles 42 is limited, and more atomized droplets sprayed from the centrifugal atomization disc 10 will directly pass through the through passage 4201 without contacting the baffles 42, and the effect of the baffles 42 on the droplets sprayed from the centrifugal atomization disc 10 is also limited. By controlling the density of the baffles 42 by d2 / d1<8, the cover 40 has the effects of protecting the centrifugal atomization disc 10, reducing the speed of the droplets to make the wind field easier to control the atomized droplets, performing secondary atomization on the droplets, and preventing large droplets or settled droplets from being formed at the baffles 42.

[0193] In an optional embodiment, 1≤d2 / d1<4. The spacing between the baffles 42 is not less than the spacing between the atomization protrusions 12 in the outermost circle, so as to avoid reducing the spray amount and affecting the effect of air-assisted spraying.

[0194] Optionally, referring to FIG. 8, FIG. 9, the baffles 42 are atomization teeth, and the inner side of the baffles 42 has a sharp end 421, the inner side of the baffles 42 refers to the side of the baffles 42 close to the centrifugal atomization disc 10, that is, the side of the baffles 42 close to the center axis of the cover 40. The sharp end 421 is used for dispersing droplets, when the droplets spun out by the centrifugal atomization disc 10 contact the sharp end 421 of the baffles 42, the droplets are dispersed again by the sharp end 421 of the baffles 42, thereby achieving the effect of secondary atomization on the droplets.

[0195] It should be noted that in the case of rotatable or non-rotatable installation of the outer cover 40, the liquid droplets thrown outward collide with the tip 421 of the barrier 42, which has the effect of re-atomizing the liquid droplets.

[0196] In other embodiments, the inner end of the barrier 42 can also not be the tip 421. The barrier 42 can also be cylindrical or the like.

[0197] Optionally, referring to FIGS. 12 and 13, the centrifugal atomization spraying device 100 further comprises a wind deflector 62, the two ends of the wind deflector 62 in the axial direction are respectively provided with an air inlet and an air outlet (shown in the figure but not labeled), and the end of the wind deflector 62 provided with the air inlet is connected with the fan 61. The wind deflector 62 can guide the surrounding airflow to flow along a predetermined path by virtue of its specific design shape. The wind deflector 62 cooperates with the fan 61 to enable the mist droplets to be blown more accurately to the target area under the action of wind, thereby reducing the drift and waste of mist droplets and reducing the power requirement of the fan 61.

[0198] The device main body of the centrifugal atomization device is located inside the wind deflector 62, that is, the wind deflector 62 at least covers the outside of the device main body. In the optional embodiment, the fixing seat 31 of the driving device 30 is connected with the fan 61, so that at least the driving device 30 is located inside the wind deflector 62. The position of the centrifugal atomization disc 10 can be in the following two ways:

[0199] First, as shown in FIGS. 12 and 13, in the axial direction of the centrifugal atomization spraying device 100, the centrifugal atomization disc 10 is located outside the wind deflector 62, that is, the centrifugal atomization disc 10 is located on the side of the wind deflector 62 away from the fan 61, and the wind deflector 62 does not shield the outer periphery of the centrifugal atomization disc 10.

[0200] It can be understood that when the centrifugal atomization spraying device 100 is applied to an unmanned vehicle, the centrifugal atomization spraying device 100 is used to spray liquid medicine to crops on the side of the unmanned vehicle, for example, to spray liquid medicine to crops on the left side, right side, front side, back side, etc. of the unmanned vehicle. By arranging the centrifugal atomization disc 10 outside the wind deflector 62, the wind deflector 62 is prevented from surrounding the outer circle of the centrifugal atomization disc 10. In this way, during spraying (for example, when the centrifugal atomization spraying device 100 is configured to spray liquid medicine to the left side or the upper left side of the unmanned vehicle), the small part of the mist droplets sprayed outward by the centrifugal atomization disc 10 is reduced or prevented from floating in the air and eventually settling on the inner wall of the wind deflector 62, thereby reducing the possibility of liquid droplets on the inner wall of the wind deflector 62, reducing pollution and waste, and improving user experience.

[0201] It can also be understood that in the case where the centrifugal atomization disc 10 is located outside the wind deflector 62, the several barriers 42 around the outer periphery of the centrifugal atomization disc 10 of the outer cover 40 play a protective role for the exposed centrifugal atomization disc 10.

[0202] Secondly, as shown in Fig. 13, the centrifugal atomization disc 10 is located inside the air guide cover 62 in the axial direction of the centrifugal atomization spraying device 100.

[0203] Optionally, the air guide cover 62 is provided with a main air duct, and two ends of the main air duct are communicated with the air inlet and the air outlet respectively. Referring to Fig. 13, the baffle 42 is located between the centrifugal atomization disc 10 and the main air duct in the radial direction of the centrifugal atomization spraying device 100. Referring to Fig. 13 again, the centrifugal atomization spraying device 100 can be divided into a central region, a transition region and an air supply region along the radial direction. The central region, the transition region and the air supply region all extend along the axial direction, and the transition region surrounds the outer periphery of the central region, and the air supply region surrounds the outer periphery of the transition region. The centrifugal atomization disc 10 is located in the central region, the baffles 42 of the outer cover 40 are located in the transition region, and the main air duct is located in the air supply region. For example, Fig. 16 shows the schematic diagram of each region in Fig. 15. In Fig. 16, S1 is the aforementioned central region, S2 is the aforementioned transition region, S3 to S8 surround the outer periphery of the transition region, S3 is the position blocked by the first tongue 622, S4 is the region blocked by the second tongue 623, S5 to S8 are air supply regions, S5 and S6 are air outlets of the main air duct (S5 and S6 are located on the upper and lower sides of the centrifugal atomization disc 10), and S7 and S8 are air outlets of the air ducts penetrating front and back (S7 and S8 are located on the left and right sides of the centrifugal atomization disc 10). After the mist droplets are sprayed from the central region S1, they pass through the transition region S2 where the baffles 42 are located, and are well blown forward when reaching the S5 to S8 regions. Of course, part of the mist droplets can also be blown forward after leaving the transition region. In other embodiments, the positions of the air duct air outlets can also be adjusted.

[0204] It can be understood that the baffles 42 are arranged in the transition region, which is conducive to reducing the speed of the mist droplets and facilitating the wind field to control the mist droplets and stabilize the mist field. The mist droplets sprayed outward by the centrifugal atomization disc 10 first pass through the transition region. When the mist droplets collide with the baffles 42 of the outer cover 40 in the transition region, the baffles 42 can reduce the speed of the mist droplets flying out along the radial direction. In this way, the mist droplets are more easily controlled by the wind field when reaching the air supply region, so that the wind field blows the mist droplets forward, and the mist field of the centrifugal atomization spraying device 100 is more stable.

[0205] It can also be understood that the barrier 42 is arranged in the transition area, which is conducive to the secondary atomization of the mist droplets. If a smaller particle size of the mist droplets is desired, the rotational speed of the centrifugal atomization disc 10 is generally considered to be increased, but the inventor finds that if the rotational speed of the centrifugal atomization disc 10 is increased, the mist droplets may still maintain a high radial centrifugal speed when reaching the air supply area, so that the fan 61 needs to be increased in speed in order to obtain a stable mist field. However, in the embodiment, the barrier 42 of the outer cover 40 surrounds the outer periphery of the centrifugal atomization disc 10, so that the barrier 42 can have the effect of dispersing and atomizing the mist droplets again and reducing the particle size of the mist droplets, and smaller particle size mist droplets can be obtained without increasing the rotational speed of the centrifugal atomization disc 10 and the speed of the fan 61.

[0206] In an optional embodiment, referring to FIG. 12, the air guide cover 62 includes an air guide shell 621 and a first tongue 622 and a second tongue 623 arranged inside the air guide shell 621, and the first tongue 622 and the second tongue 623 are located on opposite sides of the centrifugal atomization device. The main air supply channel includes a first expansion air channel 6201 and a second expansion air channel 6202, and the first expansion air channel 6201 is formed between the inner wall of the air guide shell 621 and the first tongue 622, and the second expansion air channel 6202 is formed between the inner wall of the air guide shell 621 and the second tongue 623. The first expansion air channel 6201 and the second expansion air channel 6202 are both configured to extend away from the central axis of the air guide cover 62 from one end of the air inlet to one end of the air outlet, so as to have the effect of expanding by about 180 degrees.

[0207] For example, the first tongue 622 and the second tongue 623 are located on the upper and lower sides of the centrifugal atomization device, and the first expansion air channel 6201 and the second expansion air channel 6202 are respectively an upper expansion air channel and a lower expansion air channel. When the centrifugal atomization spraying device 100 is in operation, the spraying range can be expanded upward and downward, so that the unmanned vehicle-mounted centrifugal atomization spraying device 100 can cover a larger area in the direction of crop height, thereby improving the spraying effect.

[0208] Optionally, referring to FIGS. 1-5, the outer cover 40 includes a cover mounting portion 41, and the outer cover 40 is connected to the device main body through the cover mounting portion 41; the cover mounting portion 41 is arranged on the side of the centrifugal atomization disc 10 close to the device main body. For example, the centrifugal atomization disc 10 is located on the front side of the flow guide device 20, and the part (cover mounting portion 41) where the outer cover 40 is connected to the device main body is located on the rear side of the centrifugal atomization disc 10, which has the following effects:

[0209] First, the centrifugal atomizing disc 10 can be detached from the front side of the device without disassembling the outer cover 40, for example, by removing the bolts connecting the centrifugal atomizing disc 10 and the motor shaft. In this way, when the centrifugal atomizing disc 10 needs to be repaired due to blockage, or needs to be replaced to adjust the atomization effect, etc., the centrifugal atomizing disc 10 can be quickly detached and replaced.

[0210] Second, the cover mounting portion 41 of the outer cover 40 is closer to the fan 61. In the case that the outer cover 40 is rotatably mounted on the flow guide device 20, the fan blade 44 is closer to the fan 61, and the outer cover 40 can rotate around the flow guide device 20 under the blowing action of the fan 61.

[0211] Third, the cover mounting portion 41 can be a mounting ring and is sleeved outside the flow guide device 20. In this way, the contact area between the outer cover 40 and the flow guide device 20 is large, the connection is more stable, the protection effect of the outer cover 40 on the centrifugal atomizing disc 10 is good, and the outer cover 40 is not easy to shake.

[0212] Optionally, referring to FIGS. 1, 7, and 8, the outer cover 40 has a front opening, the front opening is located inside the plurality of baffles 42, and the side of the centrifugal atomizing disc 10 away from the flow guide device 20 is completely exposed by the front opening.

[0213] For example, the fan 61, the driving device 30, the flow guide device 20, and the centrifugal atomizing disc 10 are arranged from back to front. The front ends of the plurality of baffles 42 are not connected by a connecting rib or a connecting plate, so as to avoid the mist sprayed by the centrifugal atomizing disc 10 from settling on the connecting rib or the connecting plate. In other words, the front opening of the outer cover 40 can reduce or avoid the situation of liquid droplets settling on the outer cover 40, and improve the user experience.

[0214] Optionally, the outer cover 40 includes a cover mounting portion 41, the cover mounting portion 41 is a mounting ring, the mounting ring is sleeved outside the flow guide device 20 and is rotatably connected with the flow guide device 20, or is fastened by a fastener, or is integrally connected. The outer cover 40 further includes an outer ring 43, the outer ring 43 surrounds the mounting ring, the outer ring 43 is connected with the mounting ring, and the plurality of baffles 42 are arranged on one side of the outer ring 43 in the axial direction, and the baffles 42 are connected with the outer ring 43.

[0215] Optionally, the centrifugal atomization disc 10 comprises a disc body 11 and at least one set of atomization groups, the disc body 11 has an atomization surface 1101, and the atomization groups are arranged on the atomization surface 1101; each set of atomization groups comprises atomization protrusions 12 arranged at intervals around the center line of the disc body 11, and an atomization flow channel 1201 is formed between adjacent atomization protrusions 12. For example, the atomization surface 1101 of the disc body 11 is close to one side of the flow guide device 20, and the atomization surface 1101 is provided with three circles / three sets of atomization groups from inside to outside, the atomization protrusions 12 of the first set of atomization groups are strip-shaped protrusions extending spirally from inside to outside, the atomization protrusions 12 of the second set of atomization groups are columnar protrusions, and the atomization protrusions 12 of the third set of atomization groups are atomization teeth. Liquid is dispersed multiple times by the multiple sets of atomization groups, and the atomization effect is good.

[0216] Optionally, the flow guide device 20 is used for conveying liquid to the side of the centrifugal atomization disc 10 provided with the atomization groups, so that the liquid can enter the atomization flow channels 1201. For example, the flow guide device 20 comprises a flow guide shell and a flow guide pipe, the flow guide shell has a flow guide cavity 22 formed therein, the flow guide pipe is connected to the flow guide shell, the flow guide pipe is provided with a liquid inlet 21, the flow guide shell is provided with a liquid outlet 23 close to the centrifugal atomization disc 10, the liquid inlet 21 is in communication with the liquid outlet 23 through the flow guide cavity 22, and the liquid inlet 21 is used for being connected to a liquid supply device (for example, a liquid storage tank). Under the action of a pump or other force, liquid is sent from the liquid supply device into the flow guide cavity 22 and then from the liquid outlet 23 to the centrifugal atomization disc 10, so that the liquid enters the atomization flow channels 1201.

[0217] Optionally, as shown in FIG. 14, two centrifugal atomization spraying devices 100 are arranged on the left and right sides of the vehicle body of the unmanned vehicle, the left centrifugal atomization spraying device 100 is used for spraying liquid medicine to the crop plants on the left side of the vehicle body, and the right centrifugal atomization spraying device 100 is used for spraying liquid medicine to the crop plants on the right side of the vehicle body. The direction of the centrifugal atomization spraying device 100 can be adjusted upward and / or downward, or adjusted toward the front and / or the tail of the vehicle.

[0218] Optionally, as shown in FIG. 14, the centrifugal atomization spraying device 100 comprises a mounting seat 80, the motor is adjustably or fixedly mounted on the mounting seat 80, and the mounting seat 80 is adjustably or fixedly mounted on the movable platform 200.

[0219] Optionally, referring to FIG. 17 and FIG. 18, the centrifugal atomization disc 10 has a plurality of atomization flow channels 1201 arranged around the rotation axis of the centrifugal atomization disc 10. The barrier 42 includes a strip body portion 423 and an extended end portion 422 arranged at the front side of the strip body portion 423. The strip body portion 423 is arranged outside the region where the atomization flow channels 1201 are arranged, and the extended end portion 422 extends forward relative to the region where the atomization flow channels 1201 are arranged. Please continue to refer to FIG. 2 and FIG. 4, the barrier 42 includes a strip body portion 423 and an extended end portion 422 connected to the front side of the strip body portion 423. The dashed lines in FIG. 18 represent the position of the barrier 42, which is not a solid structure and is used to divide the strip body portion 423 and the extended end portion 422 of the barrier 42. Referring to FIG. 2, FIG. 4 and FIG. 9, the strip body portion 423 is arranged outside the region where the atomization flow channels 1201 are arranged, and the extended end portion 422 extends forward relative to the region where the atomization flow channels 1201 are arranged.

[0220] The strip body portion 423 is arranged outside the region where the atomization flow channels 1201 are arranged, so that at least part of the first type of mist droplets (not shown in the figure) that move outward along the first trajectory (not shown in the figure) and leave the centrifugal atomization disc 10 can collide with the strip body portion 423. The first type of mist droplets are broken up and atomized again by the strip body portion 423, and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles. The first trajectory is a trajectory that moves radially from inside to outside, and the radial direction refers to the direction perpendicular to the rotation axis.

[0221] The extended end portion 422 extends forward relative to the region where the atomization flow channels 1201 are arranged, so that at least part of the second type of mist droplets (not shown in the figure) that move outward along the first trajectory (not shown in the figure) and leave the centrifugal atomization disc 10, and have larger mist droplet particle sizes, can collide with the strip body portion 423 and the extended end portion 422. The second type of mist droplets are broken up by the strip body portion 423 and the extended end portion 422, and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles.

[0222] The extended end portion 422 extends forward relative to the region where the atomization flow channels 1201 are arranged, so that at least part of the third type of mist droplets (not shown in the figure) that move outward along the second trajectory (not shown in the figure) and leave the centrifugal atomization disc 10 can collide with the extended end portion 422. The third type of mist droplets are broken up by the extended end portion 422, and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles.

[0223] It can be understood that in different cases, when the centrifugal atomization device is working, the mist droplets thrown out by the centrifugal atomization disc 10 are one or more of the first type of mist droplets, the second type of mist droplets, and the third type of mist droplets.

[0224] The at least one row of baffles 42 around the outer periphery of the centrifugal atomization disc 10 in the housing 40 of the present disclosure not only serves a protective function, but also serves to re-atomize the mist droplets, resulting in smaller and more uniform mist droplet sizes and better atomization. Furthermore, the strip body portion 423 of the baffle 42 cooperates with the extended end portion 422 to ensure the re-atomization effect on the mist droplets.

[0225] Optionally, referring to FIG. 18, the distance by which the baffle 42 protrudes forward relative to the atomization flow channel 1201 is a protrusion distance d3, in other words, the axial dimension of the extended end portion 422 is the protrusion distance d3 of the baffle 42. The atomization protrusions 12 at the outermost row of the disc body 11 are outer row protrusions 121, the height of the outer row protrusions 121 is d4, which is the axial dimension between the two ends of the outer row protrusions 121 in the axial direction. d3 < d4. 0.05 ≤ d3 / d4 ≤ 0.4, in other words, the length d3 of the extended end portion 422 of the baffle 42 is less than 40% of the height d4 of the flow channel. Exemplarily, d3 is 2 mm and d4 is 6.7 mm. Exemplarily, d3 is 5 mm and d4 is 2 cm. It can be understood that the atomization protrusions 12 are arranged on the atomization surface 1101, and the atomization flow channel 1201 can be cooperatively defined by the side surfaces of adjacent atomization protrusions 12 and the atomization surface 1101. The height of the atomization flow channel 1201 determines the height of the atomization flow channel 1201, and the mist droplets are sprayed outward from the atomization flow channel 1201. By controlling the ratio of the protrusion distance d3 of the baffle 42 to the height d4 of the atomization flow channel 1201, the reasonable length of the protrusion of the baffle 42 can be controlled. It can be understood that if the protrusion distance d3 of the baffle 42 is too small, the re-atomization effect on the mist droplets is limited, and if the protrusion distance d3 of the baffle 42 is too long, liquid bead chains are likely to form on the baffle 42 and large droplet phenomena are likely to occur.

[0226] In an optional embodiment, d3 / d4 ≤ 0.3, the length d3 of the extended end portion 422 of the baffle 42 is less than or equal to 30% of the height d4 of the flow channel. In an optional embodiment, 0.15 ≤ d3 / d4, the length d3 of the extended end portion 422 of the baffle 42 is greater than or equal to 15% of the height d4 of the flow channel.

[0227] Optionally, d3 / d4 = 0.3.

[0228] Optionally, the distance by which the baffle 42 protrudes forward relative to the atomization flow channel 1201 is a protrusion distance d3, and d3 is within a first threshold range, the first threshold range being 0.5 mm to 1 cm. In other words, 0.5 mm ≤ d3 ≤ 1 cm. In an optional embodiment, the first threshold range is 1 mm to 3 mm. In an optional embodiment, d3 is 2 mm.

[0229] The specific embodiments under the guidance of the second inventive concept are described in combination with FIGS. 19-33.

[0230] Spraying devices are widely used, for example, in the field of agricultural and forestry plant protection, liquid such as pesticide and growth solution is sprayed to the target area through the spraying device; in the field of disinfection, disinfectant is sprayed to the target area through the spraying device; and so on. Many spraying devices used in the field of agricultural and forestry plant protection and disinfection use pressure atomization technology, which uses compressed air or high-pressure nitrogen as power to spray liquid (such as pesticide) through a nozzle, and the liquid is broken into fine droplets. However, these spraying devices using pressure atomization technology have poor applicability in some scenarios and have some problems, for example: first, although the pressure atomization technology can break the liquid into droplets, the size and distribution of the droplets are often not uniform, and there may be large droplets and small droplets, the larger droplets may not effectively adhere to the target surface, and the smaller droplets may be blown away by the wind, causing waste and pollution. Second, the spraying efficiency is low, and for large-area spraying needs, it is generally necessary to extend the operation time of a single nozzle to spray more areas, or to increase the number of nozzles to cover a larger area.

[0231] Based on this, the present disclosure provides a centrifugal atomization device which is suitable for application in a centrifugal atomization spraying device comprising a fan. The centrifugal atomization device generates centrifugal force through a high-speed rotating centrifugal atomization disc, uses the centrifugal force to throw out the liquid, and forms atomized droplets after the liquid is broken into fine liquid particles during the process of being thrown out, and then the atomized droplets are sprayed out of the centrifugal atomization disc. Compared with the pressure atomization method, the spraying method using centrifugal atomization has better atomization effect and is suitable for application in the field of agricultural and forestry plant protection pesticide spraying.

[0232] The centrifugal atomization device of the present disclosure is also provided with an outer cover which at least partially surrounds the radial outer side of the area where the centrifugal atomization disc atomization flow channel is located, so as to protect the high-speed rotating centrifugal atomization disc. Moreover, the part of the outer cover surrounding the outer periphery of the centrifugal atomization disc also plays a role of secondary atomization of the droplets thrown out by the centrifugal atomization disc, which is conducive to improving the atomization effect.

[0233] The centrifugal atomization spraying device of the present disclosure sprays atomized droplets radially through the centrifugal atomization device at the front end, and the fan blows air at the rear of the centrifugal atomization device to blow the atomized and sprayed droplets to the target area. The centrifugal atomization spraying device can expand the coverage range of the mist field, has high spraying operation efficiency and good effect. The centrifugal atomization spraying device can be installed on a movable plant protection device such as an unmanned vehicle, an unmanned plant protection aircraft, etc., or can be fixed in the environment for use, and of course it is not excluded that it can be used in a handheld manner.

[0234] The present disclosure also provides a movable platform which can be but is not limited to an unmanned vehicle or a manned vehicle. The movable platform can drive or move in a land plot such as a farmland, an orchard, a vegetable garden, etc., and spray pesticide to the crop plants from the side, which has good spraying effect and high spraying efficiency.

[0235] It should be noted that, in the drawings of the present disclosure, in order to facilitate the description of the relative positions between the centrifugal atomization device and various components inside the centrifugal atomization spraying equipment, the y direction and the x direction are marked in the drawings, the y axis direction is consistent with the central axis direction of the centrifugal atomization spraying device and the central axis direction of the centrifugal atomization spraying equipment, and the x direction is one of the radial directions. The partial structure or the overall structure of the centrifugal atomization device is shown in FIGS. 19 to 28, FIGS. 30 and 31 show the structure of the centrifugal atomization spraying equipment 100, and FIG. 29 shows a movable platform on which the centrifugal atomization spraying equipment 100 is mounted.

[0236] Please refer to FIGS. 19, 21, 25, 26 and 28, the centrifugal atomization device includes a device body, a centrifugal atomization disc 10 and an outer cover 40. The axial direction of the centrifugal atomization device is its front-rear direction (the y direction in the drawings), the device body and the centrifugal atomization disc 10 are arranged in the axial direction, and the centrifugal atomization disc 10 is located at the front side of the device body.

[0237] The centrifugal atomization disc 10 has a rotation axis, and is used to rotate and throw liquid outward. One surface of the centrifugal atomization disc 10 is an atomization surface 1101, and the atomization surface 1101 is provided with a plurality of atomization flow channels 1201 distributed around the rotation axis. The device body includes a driving device 30, which is used to drive the centrifugal atomization disc 10 to rotate around the rotation axis.

[0238] The outer cover 40 is arranged around the centrifugal atomization disc 10 and at least partially located outside the atomization flow channels 1201 in the radial direction of the centrifugal atomization disc 10, so that the liquid centrifugally thrown away from the rotation axis from the atomization flow channels 1201 is broken up after hitting the outer cover 40. Exemplarily, the outer cover 40 includes a cover body, which surrounds the centrifugal atomization disc 10 and is located outside the atomization flow channels 1201 in the radial direction of the centrifugal atomization disc 10. In this way, the liquid thrown from the atomization flow channels 1201 is broken up after hitting the outer cover 40.

[0239] The centrifugal atomization device of the present disclosure adopts a centrifugal atomization mode and has good atomization effect. In addition, the outer cover 40 is configured to cooperate with the centrifugal atomization disc 10. In the case that the outer cover 40 is arranged at least partially around the centrifugal atomization disc 10 and the part is located radially outside the atomization flow channel 1201, the liquid can directly impact the cover body of the outer cover 40 after being flung outward from the atomization flow channel 1201, so as to be dispersed. The centrifugal atomization device of the present disclosure is suitable for being mounted on ground equipment such as plant protection vehicles, and in the case that the centrifugal atomization device is configured such that the rotation axis of the centrifugal atomization disc 10 is substantially parallel to the ground (the included angle with the ground is less than 40 degrees) and the rotation plane of the centrifugal atomization disc 10 is approximately in the vertical direction, in the geodetic coordinate system, the mist droplets flung outward by the centrifugal atomization disc 10 are sprayed substantially upward, downward, leftward and rightward, and based on the present disclosure, the outer cover 40 is arranged at least partially around the centrifugal atomization disc 10 radially outward, so that the liquid flung upward can impact the cover body.

[0240] In an optional embodiment, the device body comprises a flow guide device 20. The flow guide device 20 is used to deliver liquid to the centrifugal atomization disc 10. The driving device 30 comprises a fixed seat 31 and a driving shaft 32. The fixed seat 31 of the driving device 30 is connected with the flow guide device 20, and the driving shaft 32 of the driving device 30 is connected with the centrifugal atomization disc 10, so that the centrifugal atomization disc 10 can rotate around the rotation axis under the driving of the driving device 30.

[0241] In an optional embodiment, the cover body comprises a plurality of barrier strips 42 arranged around the outer periphery of the centrifugal atomization disc 10 and spaced apart in the circumferential direction. The outer cover 40 is mounted on the device body through the cover mounting portion 41, and the barrier strips 42 are connected with the cover mounting portion 41. Referring to FIGS. 19, 21, 25 and 26, a plurality of barrier strips 42 are arranged around the outer periphery of the centrifugal atomization disc 10. Referring to FIGS. 20, 24 and 27, adjacent barrier strips 42 in the circumferential direction are spaced apart from each other to form a through passage 4201 therebetween, through which the mist droplets can pass. The outer cover 40 comprises the cover mounting portion 41 and a plurality of barrier strips 42. It should be noted that the barrier strip can also be referred to as a barrier piece. In an optional embodiment, the scheme that the outer cover 40 of the present disclosure is arranged at least partially around the outer side of the centrifugal atomization disc and the part is located radially outside the atomization flow channel 1201 can be combined with the embodiments of the first inventive concept to achieve better atomization effect, and can also be combined with the embodiments of the third inventive concept.

[0242] The centrifugal atomization device of the present disclosure, the outer cover 40 at least partially surrounds the outer periphery, which can protect the centrifugal atomization disc 10. When the centrifugal atomization device is used to spray liquid (such as pesticide) on agricultural crops, it can avoid the foreign matter such as branches and leaves to stretch to the centrifugal atomization disc 10, causing the centrifugal atomization disc 10 to be damaged. The outer cover 40 can also prevent the crops from being damaged by the centrifugal atomization disc 10, and prevent the centrifugal atomization disc 10 from breaking and causing harm to the operator.

[0243] When the centrifugal atomization device is working, the flow guide device 20 delivers liquid to the center of the centrifugal atomization disc 10, the driving device 30 drives the centrifugal atomization disc 10 to rotate around the central axis of rotation, and the liquid in the central region of the centrifugal atomization disc 10 moves outward under the action of centrifugal force. When the liquid passes through the area where the atomization flow channel 1201 is located, it is dispersed and atomized, and finally the fine liquid droplets (i.e. mist droplets) are sprayed and thrown out in the radial direction around the centrifugal atomization disc 10. During the process of continuing to move under the action of inertia, the mist droplets thrown out of the centrifugal atomization disc 10 collide with the outer cover 40 arranged at the outer circle of the centrifugal atomization disc 10, and the mist droplets are scattered again by the outer cover 40, realizing the secondary atomization of the mist droplets. Exemplarily, in the case that the outer cover 40 is provided with a barrier strip 42 surrounding the outer periphery of the centrifugal atomization disc 10, the mist droplets collide with the barrier strip 42, realizing the secondary atomization of the mist droplets. The mist droplets atomized again by the outer cover 40 can continue to move outward through the passage 4201 on both sides of the barrier strip 42, realizing the outward spraying of the mist droplets by the centrifugal atomization device.

[0244] In the optional embodiment, the outer cover 40 is at least partially located in the direction away from the rotation axis of the centrifugal atomization flow channel 1201 along the radial direction of the centrifugal atomization disc 10. Among them, the end of the centrifugal atomization flow channel 1201 on the centrifugal atomization disc 10 away from the rotation axis is the flow channel tail end. In the case that the flow channel tail end is located outside the outer edge of the atomization surface 1101, the outer cover 40 is at least partially located on the radial outer side of the centrifugal atomization disc 10. In the case that the flow channel tail end is a certain distance away from the outer edge of the atomization surface 1101, the outer cover 40 is at least partially located outside the atomization tail end and can be located inside the outer edge of the atomization surface 1101.

[0245] In the optional embodiment, please continue to refer to FIG. 20 and FIG. 22, the barrier strip 42 includes a strip main body part 423 and an extension end part 422 connected to the front side of the strip main body part 423. The transverse dashed line in the position of the barrier strip 42 in FIG. 20 is a non-solid structure, which is used to divide the strip main body part 423 and the extension end part 422 of the barrier strip 42.

[0246] In an optional embodiment, referring to FIG. 20, FIG. 22, and FIG. 27, the strip body part 423 is located outside the area where the atomization flow channel 1201 is located, and the extended end part 422 protrudes forward relative to the area where the atomization flow channel 1201 is located. In FIG. 24, the part enclosed by the dashed line is used to schematically show the atomization space, and a plurality of atomization flow channels 1201 are located in the atomization space.

[0247] In the above embodiment, the strip body part 423 is located outside the area where the atomization flow channel 1201 is located, so that at least part of the first type of mist droplets (not shown in the figure) that move outward along the first trajectory (not shown in the figure) after leaving the centrifugal atomization disc 10 can collide with the strip body part 423, and the first type of mist droplets are broken and atomized again by the strip body part 423 and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles. The first trajectory is a trajectory that moves radially from inside to outside, and the radial direction refers to the direction perpendicular to the rotation axis.

[0248] The extended end part 422 protrudes forward relative to the area where the atomization flow channel 1201 is located, so that at least part of the second type of mist droplets (not shown in the figure) that move outward along the first trajectory (not shown in the figure) after leaving the centrifugal atomization disc 10 and have a larger particle size can collide with the strip body part 423 and the extended end part 422, and the second type of mist droplets are broken and atomized again by the strip body part 423 and the extended end part 422 and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles.

[0249] The extended end part 422 protrudes forward relative to the area where the atomization flow channel 1201 is located, so that at least part of the third type of mist droplets (not shown in the figure) that move outward along the second trajectory (not shown in the figure) after leaving the centrifugal atomization disc 10 can collide with the extended end part 422, and the third type of mist droplets are broken and atomized again by the extended end part 422 and then continue to move outward, thereby realizing the re-atomization of the mist droplets and obtaining finer mist droplet particles.

[0250] It can be understood that, in different cases, the mist droplets spun out by the centrifugal atomization disc 10 during the operation of the centrifugal atomization device are one or more of the first type of mist droplets, the second type of mist droplets, and the third type of mist droplets.

[0251] The at least one barrier strip 42 around the outer periphery of the centrifugal atomization disc 10 in the outer cover 40 of the present disclosure not only has a protection function, but also has a function of re-atomizing the mist droplets to make the particle size of the mist droplets smaller and more uniform, thereby achieving a better atomization effect. In addition, the strip body part 423 of the barrier strip 42 cooperates with the extended end part 422 to ensure the re-atomization effect of the mist droplets.

[0252] For the convenience of clear understanding the position relationship between the barrier strip 42 and the centrifugal atomization disc 10, the area where the atomization flow channel 1201 is located can also be understood as follows: a virtual first plane and a second plane are defined, the first plane and the second plane are spaced apart along the axial direction of the centrifugal atomization disc 10, and the first plane and the second plane are both perpendicular to the rotation axis of the centrifugal atomization disc 10. The area between the first plane and the second plane is the area where the atomization flow channel 1201 is located, and the atomization flow channels 1201 provided by the centrifugal atomization disc 10 are arranged between the first plane and the second plane. Exemplarily, the area where the atomization flow channel 1201 is located is a cylindrical virtual space.

[0253] The centrifugal atomization device generates centrifugal force through the high-speed rotating centrifugal atomization disc 10, uses the centrifugal force to throw out the liquid, and forms atomized liquid droplets after the liquid is dispersed and atomized into fine liquid particles during the liquid throwing process. Compared with the pressure atomization method, the centrifugal atomization method has better atomization effect and is suitable for application in the field of agricultural and forestry plant protection pesticide spraying. The centrifugal atomization device of the present disclosure has good atomization effect: first, the liquid can be dispersed to form liquid droplets with smaller particle size, and the droplet size can be controlled to be relatively uniform, avoiding the situation that some liquid droplets have very large particle size and some liquid droplets have very small particle size; second, a wider spraying coverage range can be formed, so that the pesticide solution can more uniformly cover the target area, and the spraying effect is good; third, the controllability is strong, and the size of the droplets and the spraying amount can be controlled by adjusting the rotation speed, the liquid inlet amount and other parameters, so as to meet different operation requirements and realize accurate atomization control; fourth, compared with the pressure nozzle, the flow channel inside the centrifugal atomization disc 10 is not easy to be blocked.

[0254] The cover 40 plays a role in protecting the centrifugal atomization disc 10. Exemplarily, if corn leaves or other leaves or foreign matters accidentally stretch to the area near the centrifugal atomization disc 10, they will be blocked by the barrier strips 42 surrounding the centrifugal atomization disc 10, and the barrier strips 42 of the cover 40 play a role in blocking leaves and foreign matters from approaching the centrifugal atomization disc 10. When the centrifugal atomization disc 10 is in a rotating working state, the barrier strips 42 can prevent leaves and other foreign matters from being sucked into the centrifugal atomization disc 10, so as to avoid damage to the centrifugal atomization disc 10 or the crop. When the centrifugal atomization disc 10 is in a non-rotating standby state, the barrier strips 42 can block leaves and other foreign matters, so as to avoid scratching or damaging the centrifugal atomization disc 10. It can be understood that the adjacent barrier strips 42 are spaced apart from each other, and a passing channel 4201 is formed between the adjacent barrier strips 42. The passing channel 4201 can allow the atomized liquid droplets thrown out by the centrifugal atomization disc 10 to pass through. The arrangement of the cover 40 does not affect the function of the centrifugal atomization disc 10 to throw out atomized liquid droplets.

[0255] The centrifugal atomization device of the present disclosure, the centrifugal atomization disc 10 is externally surrounded by the several blocking strips 42 of the outer cover 40, which can protect the centrifugal atomization disc 10 from being damaged by foreign matters, protect the crops from being damaged by the centrifugal atomization disc 10, and protect the personnel from being hurt by the broken centrifugal atomization disc 10, and solve the problems caused by the direct exposure of the centrifugal atomization disc 10.

[0256] In the optional embodiment, the centrifugal atomization disc 10 and the outer cover 40 are installed and arranged on the front side of the device body in the axial direction. The installation is convenient, and the outer cover 40 is close to the centrifugal atomization disc 10, which is convenient for the re-atomization of the centrifugal atomization disc 10 by the outer cover 40, and reduces the volume and weight of the outer cover 40.

[0257] Please continue to refer to FIGS. 19-24. Optionally, the centrifugal atomization disc 10 includes a disc body 11 and at least one circle of atomization groups, each circle of atomization groups includes several atomization protrusions 12, the several atomization protrusions 12 are arranged on the atomization surface 1101, the several atomization protrusions 12 are arranged around the rotation axis, the adjacent atomization protrusions 12 are spaced from each other, and the atomization flow channel 1201 is formed between the adjacent atomization protrusions 12. Exemplarily, the side of the disc body 11 close to the flow guide device 20 is the atomization surface 1101, the atomization surface 1101 is provided with three circles / three groups of atomization groups from inside to outside, the atomization protrusions 12 of the first group of atomization groups are bent wire protrusions extending from inside to outside, the atomization protrusions 12 of the second group of atomization groups are columnar protrusions, and the atomization protrusions 12 of the third group of atomization groups are atomization teeth with inner side sharp tips 421. The liquid is dispersed by the several groups of atomization groups, and the atomization effect is good.

[0258] Optionally, referring to FIG. 19, FIG. 21, FIG. 25, and FIG. 28, the atomizing protrusions 12 in the centrifugal atomizing disc 10 are located on the side of the disc body 11 close to the device body. Exemplarily, the fixing seat 31 of the driving device 30, the flow guide device 20, and the centrifugal atomizing disc 10 are arranged in the axial direction, the atomizing surface 1101 of the disc body 11 is located on the side of the disc body 11 close to the flow guide device 20, and the atomizing protrusions 12 are located on the side of the disc body 11 close to the flow guide device 20. At this time, the baffle strip 42 is configured such that a part of the front end of the baffle strip 42 protrudes forward by a certain distance relative to the atomizing surface 1101, and the part of the baffle strip 42 protruding forward relative to the atomizing surface 1101 is the extension end portion 422. In this way, the mist droplets thrown from the edge of the atomizing surface 1101 can hit the baffle strip 42, forming a re-atomization effect. It should be noted that the disc body 11 has a certain thickness, and the baffle strip 42 can protrude forward relative to the side of the disc body 11 away from the device body, or the length of the baffle strip 42 can also be less than the side of the disc body 11 away from the device body. In the present embodiment, the side of the atomizing disc close to the flow guide device 20 is open, and the liquid flowing out of the liquid outlet 23 of the flow guide device 20 can directly enter the central area of the centrifugal atomizing disc 10, facilitating the flow guide. Moreover, the atomizing surface 1101 also has the effect of receiving liquid, ensuring that the liquid is thrown from the center of the centrifugal atomizing disc 10 to the periphery, and the atomization effect is good.

[0259] Optionally, referring to FIG. 28, the atomizing protrusions 12 in the centrifugal atomizing disc 10 are located on the side of the disc body 11 away from the device body. Exemplarily, the fixing seat 31 of the driving device 30, the flow guide device 20, and the centrifugal atomizing disc 10 are arranged in the axial direction, the atomizing surface 1101 of the disc body 11 is located on the side of the disc body 11 away from the flow guide device 20, and the atomizing protrusions 12 are located on the side of the disc body 11 away from the flow guide device 20. The atomizing protrusion 12 located at the outermost circle of the disc body 11 is the outer circle protrusion 121. At this time, the baffle strip 42 is configured such that the length of the front end of the baffle strip 42 is longer than the outer circle protrusion 121, that is, the extension end portion 422 of the baffle strip 42 protrudes forward relative to the outer circle protrusion 121.

[0260] For the sake of clearly understanding the position relationship between the barrier strip 42 and the centrifugal atomization disc 10 in different configurations, a virtual first plane and a second plane are taken as references for illustration: the first plane is tangent to the outer edge of the atomization face 1101, and the atomization protrusion 12 at the outermost circle of the disc body 11 is an outer circle protrusion 121; the second plane is tangent to the end of the outer circle protrusion 121 away from the atomization face 1101; the axial space between the first plane and the second plane is an atomization space, and the extended end portion 422 protrudes forward relative to the atomization space. In the case where the atomization protrusions 12 are located on the side of the disc body 11 close to the device main body in the centrifugal atomization disc 10, the first plane is farther away from the flow guide device 20 than the second plane, and the extended end portion 422 protrudes forward relative to the first plane. In the case where the atomization protrusions 12 are located on the side of the disc body 11 away from the device main body in the centrifugal atomization disc 10, the second plane is farther away from the flow guide device 20 than the first plane, and the extended end portion 422 protrudes forward relative to the second plane.

[0261] Optionally, referring to FIGS. 19 and 22, the distance by which the barrier strip 42 protrudes forward relative to the atomization flow channel 1201 is a protrusion distance d3, in other words, the axial dimension of the extended end portion 422 is the protrusion distance d3 of the barrier strip 42. The atomization protrusion 12 at the outermost circle of the disc body 11 is an outer circle protrusion 121, and the height of the outer circle protrusion 121 is d4, which is the axial dimension between the two ends of the outer circle protrusion 121 in the axial direction. d3 < d4. 0.05 ≤ d3 / d4 ≤ 0.4, that is, the length d3 of the extended end portion 422 of the barrier strip 42 is less than 40% of the height d4 of the flow channel. Exemplarily, d3 is 2 mm, and d4 is 6.7 mm. Exemplarily, d3 is 5 mm, and d4 is 2 cm. It can be understood that the atomization protrusions 12 are arranged on the atomization face 1101, and the atomization flow channels 1201 can be defined by the side surfaces of the adjacent atomization protrusions 12 and the atomization face 1101. The height of the atomization flow channel 1201 determines the height of the atomization flow channel 1201, and the mist droplets are sprayed out of the atomization flow channel 1201. By controlling the ratio of the protrusion distance d3 of the barrier strip 42 to the height d4 of the atomization flow channel 1201, the reasonable length of the protrusion of the barrier strip 42 can be controlled. It can be understood that the effect of re-atomization of the mist droplets by the barrier strip 42 is limited when the protrusion distance d3 of the barrier strip 42 is too small, and liquid bead chains are likely to be formed on the barrier strip 42 and large droplets are likely to be formed when the protrusion distance d3 of the barrier strip 42 is too large.

[0262] In an optional embodiment, d3 / d4 ≤ 0.3, and the length d3 of the extended end portion 422 of the barrier strip 42 is less than or equal to 30% of the height d4 of the flow channel. In an optional embodiment, 0.15 ≤ d3 / d4, and the length d3 of the extended end portion 422 of the barrier strip 42 is greater than or equal to 15% of the height d4 of the flow channel.

[0263] In an optional embodiment, referring to FIG. 21, FIG. 22, and FIG. 27, the baffle strip 42 is spaced apart from the centrifugal atomization disc 10 in the radial direction, and the baffle strip 42 does not interfere with the centrifugal atomization disc 10 during rotation of the centrifugal atomization disc 10, and the outer cover 40 has a good secondary atomization effect on the mist. In order to obtain a better secondary atomization effect, the radial spacing between the baffle strip 42 and the centrifugal atomization disc 10 is controlled: the outer circumferential surface of the centrifugal atomization disc 10 in the radial direction is a disc outer circumferential surface 1102, and the radial spacing between the baffle strip 42 and the disc outer circumferential surface 1102 is d5; 0.1≤d3 / d5≤0.3. By controlling the ratio of d3 to d4 and the ratio of d3 to d5, the extension distance of the baffle strip 42 is associated with the height of the atomization flow channel 1201, and the radial spacing between the baffle strip 42 and the centrifugal atomization disc 10 is associated with the extension distance of the baffle strip 42. After the mist is sprayed out of the atomization flow channel 1201, it can be well impacted on the baffle strip 42 to achieve a good secondary atomization effect, and the extension end portion 422 of the baffle strip 42 is prevented from being too long so that the liquid droplets can continue to fly away after being impacted on the baffle strip 42, and the baffle strip 42 is prevented from accumulating large liquid droplets.

[0264] In an optional embodiment, 0.7≤d4 / d5≤1, and the length of the extension end portion 422 of the baffle strip 42 extending forward is determined according to the height d4 of the atomization flow channel 1201.

[0265] A fan 61 is arranged at the rear of the centrifugal atomization device, and the fan 61 blows air forward to centrifugally spray mist out of the centrifugal atomization disc 10 in the radial direction. In the case that the air field blows the mist forward, the baffle strip 42 is controlled to extend a certain distance relative to the atomization flow channel 1201: on the one hand, the baffle strip 42 can reduce the centrifugal flying speed of the mist to make the mist more easily controlled by the air field, thereby making the mist field more stable; on the second hand, the baffle strip 42 can perform secondary atomization on the mist, and without the need to increase the rotation speed of the centrifugal atomization disc 10, the mist can have a smaller particle size, the mist can more easily enter the deep part of crops, and the spraying effect of the pesticide liquid is better; on the third hand, the distance d3 by which the baffle strip 42 extends forward is not too long, thereby avoiding or improving the accumulation of large liquid droplets on the baffle strip 42, avoiding the large liquid droplets on the baffle strip 42 from being sucked back, and improving the user experience.

[0266] Optionally, d3 / d4=0.3, d3 / d5=0.2073, and d4 / d5=0.8361.

[0267] Optionally, the baffle strip 42 extends a distance d3 forward relative to the atomization flow channel 1201, and the distance d3 is within a first threshold range, and the first threshold range is 0.5 mm to 1 cm. That is, 0.5 mm≤d3≤1 cm. In an optional embodiment, the first threshold range is 1 mm to 3 mm. In an optional embodiment, d3 is 2 mm.

[0268] Optionally, the barrier strip 42 is an atomizing tooth, and the inner side of the barrier strip 42 has a pointed end 421. The inner side of the barrier strip 42 refers to the side of the barrier strip 42 close to the centrifugal atomizing disc 10, i.e. the side of the barrier strip 42 close to the central axis of the outer cover 40. The pointed end 421 is used for dispersing droplets. When the droplets thrown out by the centrifugal atomizing disc 10 hit the pointed end 421 of the barrier strip 42, the droplets are dispersed again by the pointed end 421 of the barrier strip 42, thereby achieving the effect of re-atomizing the droplets. It should be noted that, in the case of rotatable or non-rotatable installation of the outer cover 40, when the droplets thrown out hit the pointed end 421 of the barrier strip 42, the effect of re-atomizing the droplets is achieved.

[0269] In an optional embodiment, the barrier strip 42 has a first side and a second side, and the first side is connected to the second side at an angle. The connection between the first side and the second side forms the pointed end 421. After the droplets hit the pointed end 421, the droplets are guided to the left and right sides of the barrier strip 42 under the guidance of the first side and the second side, so as to continue to fly out from the through channels 4201 on the left and right sides of the barrier strip 42.

[0270] Optionally, referring to FIG. 28, the driving device 30 includes a fixed seat 31 and a driving shaft 32. The fixed seat 31 of the driving device 30 is connected to and fixed relative to the flow guide device 20, and the driving shaft 32 is connected to the centrifugal atomizing disc 10. In an optional embodiment, the driving device 30 is a motor, which includes a motor seat and a motor shaft. The motor seat, the flow guide device 20, and the centrifugal atomizing disc 10 are arranged along an axial direction. The motor shaft penetrates or passes through the flow guide device 20, and the motor shaft is connected to the centrifugal atomizing disc 10.

[0271] Optionally, referring to FIGS. 19, 21, 25, and 28, the outer cover 40 includes a mounting ring arranged around the rotation axis thereof. The mounting ring is sleeved on the outside of the flow guide device 20, so as to connect the outer cover 40 to the device main body. The outer cover 40 is mounted in a sleeved manner: first, the outer cover 40 does not occupy the space between the flow guide device 20 and the centrifugal atomizing disc 10, and does not affect the cooperation between the flow guide device 20 and the centrifugal atomizing disc 10; second, the contact area between the outer cover 40 and the flow guide device 20 is large, the connection is more stable, the protection effect of the outer cover 40 on the centrifugal atomizing disc 10 is good, and the outer cover 40 is not easy to shake. In an optional embodiment, the outer cover 40 further includes an outer ring 43. The plurality of barrier strips 42 are arranged on one side of the outer ring 43 in an axial direction, and the mounting ring is located on the inner side of the outer ring 43. The barrier strips 42 are connected to the mounting ring through the outer ring 43. In an optional embodiment, the mounting ring is rotatably connected to the flow guide device 20.

[0272] In other embodiments, the portion of the cover 40 for connecting with the flow guide device 20 can also be arranged on one side of the flow guide device 20 in the axial direction. In other embodiments, the mounting ring is arranged outside the flow guide device 20, but the mounting ring is fixedly connected with the flow guide device 20.

[0273] Optionally, in order to obtain a better spraying effect, the centrifugal atomization device is configured such that, in a working state of the centrifugal atomization device for atomization spraying, the rotation axis of the centrifugal atomization disc 10 is parallel to the horizontal plane or the included angle with the horizontal plane is less than 30 degrees. As shown in FIG. 29, in the working state of the centrifugal atomization device, at this time, the back of the centrifugal atomization disc 10 is substantially left or right of the left or right side, and cooperates with the fan 61 to spray the plant on the left or right side of the movable platform 200 with liquid medicine. In the figure, L1 indicates the rotation axis of the centrifugal atomization disc 10, and L2 indicates the horizontal plane. The rotation axis L1 of the centrifugal atomization disc 10 is substantially parallel to the horizontal plane L2, that is, the axial direction of the centrifugal atomization device is arranged in an approximately horizontal direction, and the rotation plane of the centrifugal atomization disc 10 is arranged in an approximately vertical plane perpendicular to the horizontal plane.

[0274] The inventor found that, in the case where the centrifugal atomization device is provided with the cover 40, when the centrifugal atomization device is working, the centrifugal atomization disc 10 rotates to rotate and throw out atomized droplets, and part of the droplets may be deposited on the blocking strip 42. Among them, the deposited droplets are droplets that are not sprayed out and are retained nearby.

[0275] If the position of the cover 40 is fixed during the atomization work, for the case where the centrifugal atomization device is carried on the unmanned aerial vehicle, the centrifugal atomization device is generally arranged above the crops, and when the unmanned aerial vehicle sprays liquid medicine downward, the blocking strip 42 extends downward, and it is not easy for large droplets to accumulate on the blocking strip 42, or the accumulated large droplets will fall downward along the blocking strip 42 to the ground under the action of gravity.

[0276] However, for the case that the centrifugal atomization device is mounted on the unmanned vehicle, the centrifugal atomization device generally sprays the liquid medicine to the crops from the side of the crops (for example, the left side or the right side), and in most cases, the axis of the centrifugal atomization disc 10 is parallel to the ground (for example, when spraying horizontally to the left), or the axis of the centrifugal atomization disc 10 is at a certain angle with the ground (for example, when spraying upward to the left or downward to the left). In this way, the barrier strip 42 is mostly parallel to the ground or within a certain angle with the ground, and at this time, a certain amount of liquid droplets may accumulate on the barrier strip 42 to form a sediment. Among them, the liquid droplets accumulated on the barrier strip 42 may cause one or more of the following problems: first, the liquid droplets accumulated on the barrier strip 42 are visible to the user, which makes the user feel that this part of the liquid droplets has not been blown out by the spray, which is a waste and affects the user experience; second, if the liquid droplets do not fall downward until the centrifugal atomization device stops working, they may fall on the platform main body 200 and contaminate the platform main body 200; third, in some cases, these liquid droplets accumulated on the barrier strip 42 may also be sucked back by the fan 61, and the sucked liquid droplets may contaminate other parts.

[0277] Optionally, referring to FIGS. 21 and 28, the centrifugal atomization device is configured to rotate the outer cover 40. Exemplarily, the cover mounting portion 41 of the outer cover 40 is a mounting ring, which is sleeved on the flow guide device 20 and is rotatably connected with the flow guide device 20. In an optional embodiment, an annular connecting track 71 is arranged outside the flow guide device 20, and the cover mounting portion 41 of the outer cover 40 is rotatably mounted on the connecting track 71.

[0278] In an optional embodiment, on the basis of the rotatable mounting of the outer cover 40, the centrifugal atomization device and the outer cover 40 in the centrifugal atomization spraying equipment 100 are configured such that, in the case that the centrifugal atomization device is in a working state, the rotating direction of the outer cover 40 is opposite to the rotating direction of the centrifugal atomization disc 10, that is, the centrifugal atomization disc 10 rotates around a first direction to spray the atomized liquid droplets outward, and the outer cover 40 rotates around a second direction, the first direction being opposite to the second direction. For example, the first direction is the clockwise direction and the second direction is the counterclockwise direction, or the first direction is the counterclockwise direction and the second direction is the clockwise direction. It can be understood that, when the centrifugal atomization device is working, the outer cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, and when the liquid droplets sprayed by the centrifugal atomization disc 10 hit the barrier strip 42, the barrier strip 42 has a movement trend opposite to the liquid droplets due to the reverse rotation of the outer cover 40, and the liquid droplets are more likely to leave the barrier strip 42.

[0279] When the centrifugal atomization device is in operation, the outer cover 40 and the centrifugal atomization disc 10 rotate in opposite directions, which can bring at least one of the following effects: first, it can reduce the liquid deposited on the blocking strip 42, avoid or reduce the formation of a small amount of large droplets on the blocking strip 42, thereby improving the user experience, and avoiding subsequent dripping of the liquid droplets deposited on the blocking strip 42 from polluting other areas. Second, in the centrifugal atomization spraying device 100 of the present disclosure, the blocking strip 42 of the reversely rotating outer cover 40 can reduce the speed of the centrifugal sprayed droplets, so that the droplets can be more easily controlled by the wind field blown by the fan 61, so that the atomized droplets can be stably blown by the fan 61 to the target area, and the mist field is more stable.

[0280] Among them, for the scheme that the outer cover 40 is rotatable, the rotation of the outer cover 40 can be realized by motor driving, or the outer cover 40 can be provided with fan blades to realize the rotation of the outer cover 40 by blowing wind by the fan 61. In the optional embodiment, in the case that the centrifugal atomization device is in the working state, the rotation direction of the outer cover 40 is opposite to the rotation direction of the centrifugal atomization disc 10, and the rotation speed of the outer cover 40 is lower than that of the centrifugal atomization disc 10.

[0281] It should be noted that the centrifugal atomization device with a rotatable outer cover 40 can be applied to unmanned vehicles and unmanned aerial vehicles.

[0282] Please refer to FIG. 30 and FIG. 31, the centrifugal atomization spraying device 100 comprises the centrifugal atomization device in any of the foregoing embodiments, and further comprises a fan 61 and a wind deflector 62. Among them, the centrifugal atomization disc 10, the device main body and the fan 61 are arranged in the axial direction, the centrifugal atomization device is used for atomizing the liquid to be sprayed by the centrifugal atomization disc 10, and is used for spraying the atomized liquid by the centrifugal atomization disc 10 in the radial direction of the centrifugal atomization spraying device 100, and the spraying effect of the centrifugal atomization disc 10 is similar to the schematic diagram in the figure (the thick dashed line in the figure is only used to provide a schematic diagram of the droplet path, and cannot be the only limitation of the present disclosure). The fan 61 is located at the axial rear of the centrifugal atomization disc 10, and the fan 61 is used to blow the mist droplets sprayed by the centrifugal atomization disc 10 to the target area.

[0283] The centrifugal atomization spraying device 100 can spray pesticides by matching the centrifugal atomization disc 10 with the fan 61. Compared with conventional pressure atomization spraying, the centrifugal atomization spraying device has the following effects: good atomization effect; finer atomized droplets can be obtained; the fine droplets can penetrate the crop canopy more deeply, cover more leaf and fruit surfaces, and improve the utilization rate and control effect of pesticides; the centrifugal atomization spraying device can control the rotational speed by adjusting the motor voltage, thereby accurately controlling the droplet size; the flexibility of the device allows precise adjustment of pesticide spraying according to different crop types, growth stages, and pest conditions; the centrifugal atomization spraying device is suitable for various pesticide formulations, including but not limited to powders, suspensions, and emulsifiable concentrates, which have poor water solubility, thereby expanding the selection range of pesticides; the spraying efficiency can be improved; the centrifugal atomization spraying device combined with the fan 61 can directly deliver droplets to the target area, reducing the drift and waste of pesticide liquid in the air, and improving the spraying efficiency; the device is not only suitable for pesticide spraying in large areas of farmland, but also suitable for fine management of small areas of crops in orchards and vegetable gardens.

[0284] The centrifugal atomization spraying device 100 of the present disclosure can be applied to spraying pesticides on crops. For example, when it is necessary to spray pesticides on crops such as corn and cotton, the unmanned vehicle travels in the field, and the centrifugal atomization device works to throw and spray the atomized droplets around the centrifugal atomization disc 10, and the fan 61 blows the atomized droplets to the target plants.

[0285] Optionally, referring to FIGS. 30 and 31, the centrifugal atomization spraying device 100 further includes a wind deflector 62, both ends of the wind deflector 62 in the axial direction are respectively provided with an air inlet and an air outlet (not marked in the figure), and the end of the wind deflector 62 provided with the air inlet is connected with the fan 61. The wind deflector 62 can guide the surrounding airflow to flow along a predetermined path due to its specific design shape. The wind deflector 62 is used in combination with the fan 61 to allow the droplets to be blown more accurately to the target area under the action of wind, thereby reducing the drift and waste of droplets and reducing the power requirement of the fan 61.

[0286] The device main body of the centrifugal atomization device is located inside the wind deflector 62, i.e., the wind deflector 62 at least covers the outside of the device main body. In an optional embodiment, the fixing seat 31 of the driving device 30 is connected with the fan 61, so that at least the driving device 30 is located inside the wind deflector 62. The position of the centrifugal atomization disc 10 can be as follows:

[0287] First, as shown in FIG. 31, in the axial direction of the centrifugal atomization spraying device 100, the centrifugal atomization disc 10 is located outside the wind deflector 62, i.e., the centrifugal atomization disc 10 is located on the side of the wind deflector 62 away from the fan 61, and the wind deflector 62 does not cover the outer periphery of the centrifugal atomization disc 10.

[0288] It can be understood that when the centrifugal atomization spraying device 100 is applied to an unmanned vehicle, the centrifugal atomization spraying device 100 is used to spray liquid medicine to crops on the side of the unmanned vehicle, for example, to crops on the left side, the right side, the front side, the back side, etc. of the unmanned vehicle. The centrifugal atomization disc 10 is arranged outside the wind deflector 62, avoiding the wind deflector 62 from surrounding the outer circle of the centrifugal atomization disc 10. In this way, during spraying (for example, when the centrifugal atomization spraying device 100 is configured to spray liquid medicine to the left side or the upper left side of the unmanned vehicle), the small part of mist droplets sprayed outward by the centrifugal atomization disc 10 is reduced or avoided from floating in the air and finally settling on the inner wall of the wind deflector 62, reducing the possibility of liquid droplets on the inner wall of the wind deflector 62, reducing pollution and waste, and improving user experience.

[0289] It can also be understood that when the centrifugal atomization disc 10 is located outside the wind deflector 62, the outer cover 40 has several barrier strips 42 surrounding the outer periphery of the centrifugal atomization disc 10, which plays a protective role for the exposed centrifugal atomization disc 10.

[0290] Second, as shown in the figure, in the axial direction of the centrifugal atomization spraying device 100, the centrifugal atomization disc 10 is located inside the wind deflector 62.

[0291] Optionally, referring to FIG. 30, the wind deflector 62 includes a wind deflector shell 621 and a first tongue 622 and a second tongue 623 arranged inside the wind deflector shell 621. The first tongue 622 and the second tongue 623 are located on the opposite sides of the centrifugal atomization device. The inner wall of the wind deflector shell 621 and the first tongue 622 form a first expansion air duct 6201, and the inner wall of the wind deflector shell 621 and the second tongue 623 form a second expansion air duct 6202. The first expansion air duct 6201 and the second expansion air duct 6202 are both configured to extend away from the central axis of the wind deflector 62 from one end of the air inlet to one end of the air outlet, so as to play a role of roughly expanding.

[0292] For example, the first tongue 622 and the second tongue 623 are located on the upper and lower sides of the centrifugal atomization device, and the first expansion air duct 6201 and the second expansion air duct 6202 are respectively an upper expansion air duct and a lower expansion air duct. When the centrifugal atomization spraying device 100 performs spraying, the spraying range can be expanded upward and downward, so that the centrifugal atomization spraying device 100 on the unmanned vehicle can cover a larger area in the height direction of the crops, improving the spraying effect.

[0293] Referring to FIG. 31, the baffle strips 42 are located between the first flared air duct 6201 and the second flared air duct 6202 in the radial direction of the centrifugal atomization spraying device 100. The centrifugal atomization spraying device 100 can be divided into a central region, a transition region, and a blowing region along the radial direction thereof, and the central region, the transition region, and the blowing region all extend along the axial direction, and the transition region surrounds the outer periphery of the central region, and the blowing region surrounds the outer periphery of the transition region. Among them, the centrifugal atomization disc 10 is located in the central region, and the baffle strips 42 of the outer cover 40 are located in the transition region, and the first flared air duct 6201 and the second flared air duct 6202 are located in the blowing region.

[0294] Exemplarily, FIG. 33 shows the schematic diagram of the various regions in FIG. 32, in which S1 is the aforementioned central region, S2 is the aforementioned transition region, S3 to S8 surround the outer periphery of the transition region, S3 is the position blocked by the first tongue 622, S4 is the region blocked by the second tongue 623, S5 to S8 are all blowing regions, S5 and S6 are air outlets of the main air duct (S5 and S6 are located on the upper and lower sides of the centrifugal atomization disc 10), and S7 and S8 are air outlets of the front-to-back air duct (S7 and S8 are located on the left and right sides of the centrifugal atomization disc 10). Among them, the mist droplets sprayed from the central region S1 pass through the transition region S2 where the baffle strips 42 are located, and are well blown forward when reaching the S5 to S8 regions. Of course, a part of the mist droplets can also be blown forward after leaving the transition region. In other embodiments, the positions of the air duct air outlets can also be adjusted.

[0295] It can be understood that the baffle strips 42 are arranged in the transition region, which is conducive to reducing the speed of the mist droplets and making the wind field more easily control the mist droplets and stabilize the mist field. The mist droplets sprayed outward by the centrifugal atomization disc 10 first pass through the transition region, and when the mist droplets collide with the baffle strips 42 of the outer cover 40 in the transition region, the baffle strips 42 can reduce the speed of the mist droplets flying outward along the radial direction. In this way, the mist droplets are more easily controlled by the wind field blowing forward when reaching the blowing region, so that the wind field blows the mist droplets forward, and the mist field of the centrifugal atomization spraying device 100 is more stable.

[0296] It can also be understood that the baffle strips 42 arranged in the transition region are conducive to secondary atomization of the mist droplets. If the centrifugal atomization spraying device 100 is expected to obtain mist droplets with smaller particle size, it is generally considered to increase the rotation speed of the centrifugal atomization disc 10. However, the inventors have found that if the rotation speed of the centrifugal atomization disc 10 is increased, the mist droplets may still maintain a relatively high radial centrifugal speed when reaching the blowing region. In this case, if a stable mist field is to be obtained, the fan 61 speed needs to be increased. However, in the present embodiment, the baffle strips 42 of the outer cover 40 surround the outer periphery of the centrifugal atomization disc 10, so that the baffle strips 42 can have the effect of dispersing and atomizing the mist droplets again and reducing the particle size of the mist droplets. In this way, smaller particle size mist droplets can be obtained without increasing the rotation speed of the centrifugal atomization disc 10 and the fan 61 speed.

[0297] Optionally, referring to FIG. 26 and FIG. 28, the outer cover 40 is connected with the device body through the cover mounting portion 41, and the cover mounting portion 41 is arranged on the side of the centrifugal atomization disc 10 close to the device body. Exemplarily, the centrifugal atomization disc 10 is located on the front side of the flow guide device 20, and the part (the cover mounting portion 41) where the outer cover 40 is connected with the device body is located on the rear side of the centrifugal atomization disc 10. When the centrifugal atomization disc 10 needs to be repaired due to blockage or needs to be replaced to adjust the atomization effect, the centrifugal atomization disc 10 can be quickly disassembled and replaced.

[0298] Optionally, the flow guide device 20 is used to transport liquid to the side of the centrifugal atomization disc 10 where the atomization group is arranged, so that the liquid can enter the plurality of atomization flow channels 1201. Exemplarily, the flow guide device 20 is a flow guide shell and a flow guide pipe. The flow guide shell has a flow guide cavity 22 formed inside. The flow guide pipe is connected with the flow guide shell. The flow guide pipe is provided with a liquid inlet 21. The side of the flow guide shell close to the centrifugal atomization disc 10 is provided with a liquid outlet 23. The liquid inlet 21 is in communication with the liquid outlet 23 through the flow guide cavity 22. The liquid inlet 21 is used to be connected with a liquid supply device (for example, a liquid storage tank). Under the action of a pump or other force, the liquid is sent from the liquid supply device into the flow guide cavity 22 and then from the liquid outlet 23 to the centrifugal atomization disc 10, so that the liquid enters the plurality of atomization flow channels 1201.

[0299] Optionally, as shown in FIG. 29, the movable platform is an unmanned vehicle, and the platform body 200 is a vehicle body. Two centrifugal atomization spraying devices 100 are arranged on the left and right sides of the vehicle body. The centrifugal atomization spraying device 100 on the left side is used to spray liquid medicine to the crop plants on the left side of the vehicle body, and the centrifugal atomization spraying device 100 on the right side is used to spray liquid medicine to the crop plants on the right side of the vehicle body. The direction of the centrifugal atomization spraying device 100 can be adjusted upward and / or downward, or adjusted toward the front and / or the tail of the vehicle.

[0300] Please refer to FIG. 29. The movable platform includes the centrifugal atomization spraying device 100 in any of the foregoing embodiments and further includes a platform body 200. The centrifugal atomization spraying device 100 is mounted on the platform body 200. The movable platform can be an unmanned vehicle or a manned vehicle.

[0301] The unmanned vehicle of the present disclosure is equipped with a centrifugal atomization spraying device 100. Through the cooperation of the centrifugal atomization spraying device, the fan 61 and the platform body 200, the movable platform can walk in the field and automatically spray pesticides. The technology of the present disclosure has high application value in modern agriculture. This spraying method is suitable for various crops, has the advantages of adjustable spraying amount, adjustable droplet size, good atomization spraying effect, improved work efficiency and reduced labor cost, etc. Among them, the movable platform of the present disclosure is suitable for spraying pesticides for various types of crops. For example, for low plant crops (peanuts, sweet potatoes, etc.), the plant height of these crops is relatively low. By adjusting the angle of the centrifugal atomization spraying device 100, it can easily cover all parts of the plant, ensuring uniform pesticide spraying. For medium-height plant crops (cotton, soybeans, shelf cucumbers, shelf eggplants, corn, lemons, wheat, etc.), the centrifugal atomization device cooperates with the appropriate fan 61 to effectively blow the pesticide droplets onto the leaves and stems of the crops, improving the spraying effect.

[0302] The movable platform is equipped with a centrifugal atomization spraying device 100. The movable platform can adjust the driving speed according to the height and density of the crops, and can adjust the spraying angle by adjusting the angle of the centrifugal atomization spraying device 100, to accurately spray the target area.

[0303] The movable platform is a plant protection vehicle. When the plant protection vehicle is applied in the field of agricultural and forestry plant protection, it can drive in farmland, orchard, vegetable garden and other plots, as shown in FIG. 29, spray pesticides from the side to the crop plants, and have good spraying effect. The centrifugal atomization spraying device 100 of the plant protection vehicle has a design of centrifugal atomization device cooperating with fan 61 for blowing, and the droplets have a certain penetration. The droplets can more accurately reach the target plant crops, and the droplet size is small and uniformly distributed. The droplets can enter the interior of the crop plants through the gaps between the leaves along with the airflow, which is beneficial to more completely cover the leaves, fruits, etc. of the crops, can improve the problem of uneven acceptance of pesticide solution by the outer and inner areas of the crops (for example, the outer end of the leaves can accept the pesticide solution, but the roots may not accept it), can improve the problem of uneven acceptance of pesticide solution by the top and bottom of the crops, and improve the prevention and control effect.

[0304] Optionally, the centrifugal atomization spraying device 100 includes a mounting seat 80, and the motor is adjustably or fixedly mounted on the mounting seat 80. The mounting seat 80 is adjustably or fixedly mounted on the platform body 200.

[0305] The specific embodiments under the guidance of the third inventive concept are introduced in combination with FIGS. 34-51. It should be noted that the embodiments under the guidance of the present inventive concept can be combined with the embodiments of the first and second inventive concepts described above to form alternative embodiments that support each other and achieve better technical effects.

[0306] Spraying equipment is widely used, for example, in the field of agriculture and forestry plant protection, liquid such as pesticide and growth solution is sprayed to the target area; in the field of disinfection, disinfectant is sprayed to the target area. However, the spraying equipment in the related art has the following problems: first, most of the spraying equipment uses pressure atomization, uses compressed air as power to split the liquid into fine mist droplets and sprays the mist droplets out through the nozzle. However, the size of the mist droplets is not uniform, and there are large and small mist droplets in the sprayed mist droplets. The large mist droplets may not effectively adhere to the target surface, and the atomization and spraying effect is poor. Moreover, the spraying efficiency is low, and for large-area spraying demand, it is generally necessary to extend the operation time by a single nozzle or increase the number of nozzles.

[0307] Second, in the field of plant protection, automatic spraying technology is mostly achieved by mounting a spray head on a drone. When spraying pesticide or growth solution on crops, it is difficult for the pesticide or growth solution to reach some areas of the crops.

[0308] Therefore, the present disclosure provides a centrifugal atomization device. A centrifugal force is generated by a high-speed rotating centrifugal atomization disc, and liquid is thrown out by the centrifugal force. During the process of being thrown out, the liquid is dispersed and atomized to form fine liquid particles, and then the atomized liquid droplets are sprayed out of the centrifugal atomization disc. Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, the generated mist droplets are more uniform, the atomization effect is better, and the centrifugal atomization device is suitable for application in the field of agriculture and forestry plant protection pesticide spraying. The centrifugal atomization device can be combined with a fan to perform spraying operation, and the spraying effect is better.

[0309] The outer cover of the centrifugal atomization device of the present disclosure has a protection function. The outer cover can be rotated to improve or avoid the accumulation of large liquid droplets on the blocking member. The outer cover can be removed for easy replacement.

[0310] The present disclosure also provides a wind-blowing spraying equipment. The mist droplets are generated by using the centrifugal atomization method, and the mist droplets are sprayed to the target area by blowing with a fan. On the one hand, the uniformity of the mist droplets is better, and when the pesticide mist droplets are sprayed on crops, most of the pesticide mist droplets can better adhere to the surface of the crops, thereby obtaining good spraying effect. On the second hand, the fan blowing can accurately blow the mist droplets thrown out by the centrifugal atomization to the target area, and can cover a larger range, thereby obtaining good spraying effect and high spraying efficiency. The centrifugal atomization spraying equipment can be installed on a movable plant protection equipment such as an unmanned vehicle, an unmanned plant protection aircraft, etc., or can be fixed in the environment for use. Of course, it is not excluded that the equipment is used in a handheld manner.

[0311] The present disclosure also provides a vehicle-mounted spraying system. The wind-blowing spraying equipment is mounted on the vehicle body of a plant protection vehicle. The plant protection vehicle can travel in farmland, orchard, vegetable garden, etc., and spray pesticide to the crops from the side. The spraying effect is good, and the spraying efficiency is high.

[0312] It should be noted that, in the drawings of the present disclosure, in order to facilitate the description of the relative positions between the centrifugal atomization device and the various components inside the centrifugal atomization spraying equipment, the y direction and the x direction are marked in the drawings, the y axis direction is consistent with the central axis direction of the centrifugal atomization spraying device and the central axis direction of the centrifugal atomization spraying equipment, and the x direction is one of the radial directions. The partial structure or the overall structure of the centrifugal atomization device is shown in FIGS. 34-45, the structure of the air-assisted spraying equipment is shown in FIGS. 46 and 47, and the structure of the vehicle-mounted spraying system is shown in FIG. 48.

[0313] Please refer to FIGS. 34-45, the centrifugal atomization device includes a device main body 90, a centrifugal atomization disc 10, and an outer cover 40.

[0314] The device main body 90 includes a flow guide device 20 and a driving device 30. The flow guide device 20 is used to deliver liquid to the centrifugal atomization disc 10. The driving device 30 includes a fixing seat 31 and a driving shaft 32. The fixing seat 31 of the driving device 30 is connected to and fixed relative to the flow guide device 20, and the driving shaft 32 is connected to the centrifugal atomization disc 10. The central axis of the centrifugal atomization disc 10 is a first axis, and the driving device 30 is used to drive the centrifugal atomization disc 10 to rotate around the first axis.

[0315] Among them, the centrifugal atomization disc 10 is provided with a plurality of atomization flow channels 1201 distributed around the first axis thereof, the flow guide device 20 is used to be connected to a liquid supply device and to deliver liquid from the liquid supply device to the centrifugal atomization disc 10, so that the liquid can enter the plurality of atomization flow channels 1201. The driving device 30 can be, but is not limited to, a motor. By driving the centrifugal atomization disc 10 to rotate through the driving device 30, the liquid can be centrifugally thrown out, and the atomized liquid droplets can be sprayed to the periphery of the centrifugal atomization disc 10.

[0316] The outer cover 40 includes a mounting ring 41 and a plurality of barrier strips 42. The mounting ring 41 is sleeved on the outside of the device main body 90, and the mounting ring 41 is detachably and rotatably connected to the device main body 90. The barrier strips 42 are all connected to the mounting ring 41, the plurality of barrier strips 42 are arranged around the outer periphery of the centrifugal atomization disc 10, and the adjacent barrier strips 42 are arranged at intervals. It should be noted that, in an optional embodiment, the mounting ring 41 can also be referred to as a cover mounting portion, which is mainly configured to cooperate with other components to connect the outer cover 40 to other components. It should be noted that the barrier strip can also be referred to as a barrier piece.

[0317] In optional embodiments, the scheme that the mounting ring 41 of the present inventive concept is detachably and rotatably connected to the device main body can be used in the embodiments of the first inventive concept and the second inventive concept.

[0318] The centrifugal atomization device of the present disclosure generates centrifugal force by the high-speed rotating centrifugal atomization disc 10, uses the centrifugal force to throw out the liquid, and forms fine liquid particles after the liquid is dispersed and atomized during the throwing-out process, and then sprays the atomized liquid droplets out of the centrifugal atomization disc 10.

[0319] Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, and the atomization effect is better, which is suitable for application in the field of agricultural and forestry plant protection pesticide spraying. The centrifugal atomization device of the present disclosure has good atomization effect: first, the liquid can be dispersed to form smaller liquid droplets, and the droplet size can be controlled to be relatively uniform, avoiding the situation that some liquid droplets are too large and some liquid droplets are too small; third, the controllability is strong, and the size and spraying amount of the droplets can be controlled by adjusting the rotation speed, liquid inlet amount and other parameters, meeting different operation requirements and realizing accurate atomization control; third, by cooperating the centrifugal atomization device with the fan 61, the droplets can be blown to the target area by the wind field, which not only can form a wider spraying coverage range and make the pesticide solution more uniformly cover the target area, but also can improve the spraying efficiency and have good spraying effect; fourth, compared with the pressure nozzle, the flow channel inside the centrifugal atomization disc 10 is not easy to be blocked.

[0320] The outer cover 40 in the centrifugal atomization device of the present disclosure has a barrier strip 42 that can protect the centrifugal atomization disc 10, the outer cover 40 can rotate to improve or avoid the situation that the barrier strip 42 accumulates liquid droplets, and the outer cover 40 can be disassembled for convenient replacement. When the centrifugal atomization device is applied to the air-assisted spraying equipment, the outer cover 40 can rotate to reduce or avoid the accumulation of liquid droplets on the barrier strip 42, thereby reducing the situation that the liquid droplets on the barrier strip 42 are sucked back, making the air-assisted mist field more stable.

[0321] The outer cover 40 has a protective effect on the centrifugal atomization disc 10, and can protect crops from being damaged by the centrifugal atomization disc 10, and can protect personnel from being injured by the centrifugal atomization disc 10. If corn leaves or other leaves or foreign matter accidentally extend to the area near the centrifugal atomization disc 10, the leaves or foreign matter will be blocked by the barrier strips 42 around the centrifugal atomization disc 10. The barrier strips 42 of the outer cover 40 can prevent leaves or foreign matter from approaching the centrifugal atomization disc 10. When the centrifugal atomization disc 10 is in a rotating working state, the barrier strips 42 can prevent leaves or foreign matter from being sucked into the centrifugal atomization disc 10, and prevent the centrifugal atomization disc 10 from being damaged or crops from being damaged. When the centrifugal atomization disc 10 is in an idle state, the barrier strips 42 can block leaves or foreign matter to prevent the centrifugal atomization disc 10 from being damaged. It can be understood that the adjacent barrier strips 42 are spaced apart from each other, and a through passage 4201 is formed between the adjacent barrier strips 42. The through passage 4201 allows the atomized droplets thrown out by the centrifugal atomization disc 10 to pass through. The outer cover 40 does not affect the function of the centrifugal atomization disc 10 throwing out atomized droplets.

[0322] Optionally, in order to obtain better spraying effect, the centrifugal atomization device is configured such that, in a working state of the centrifugal atomization device for atomization and spraying, the rotation axis of the centrifugal atomization disc 10 is parallel to the horizontal plane or the included angle with the horizontal plane is less than 30 degrees. That is, the axial direction of the centrifugal atomization device is arranged in the approximate horizontal direction, and the rotation plane of the centrifugal atomization disc 10 is arranged in the vertical plane perpendicular to the horizontal plane.

[0323] The inventor found that, when the centrifugal atomization device is working, the centrifugal atomization disc 10 rotates to spin out atomized droplets, and some droplets may settle on the barrier strip 42. The settled droplets are the droplets that are not sprayed out and are retained nearby. If the outer cover 40 is fixed during the atomization work, for the case that the centrifugal atomization device is mounted on a UAV, the centrifugal atomization device generally sprays liquid from above the crops, and when the UAV sprays liquid downward, the barrier strip 42 extends downward, and it is not easy for large droplets to accumulate on the barrier strip 42, or the accumulated large droplets will fall to the ground along the barrier strip 42 under the action of gravity. However, for the case that the centrifugal atomization device is mounted on a UAV, the centrifugal atomization device generally sprays liquid from the side of the crops (for example, from the left side or the right side), and in most cases, the axis of the centrifugal atomization disc 10 is parallel to the ground (for example, when spraying horizontally to the left), or the axis of the centrifugal atomization disc 10 is at a certain angle with the ground (for example, when spraying upward to the left or downward to the left). In this way, the barrier strip 42 is mostly parallel to the ground or within a certain angle with the ground, and at this time, the barrier strip 42 may accumulate some droplets and form a settlement. Among them, the droplets settled on the barrier strip 42 may cause one or more of the following problems: first, the droplets settled on the barrier strip 42 are seen by the user, which makes the user feel that this part of the droplets has not been blown out and sprayed out, feels wasted, and affects the user experience. Second, if the droplets fall downward after the centrifugal atomization device stops working, they may fall on the vehicle body and contaminate the vehicle body. Third, in some cases, these accumulated droplets on the barrier strip 42 can also be sucked back, and the sucked back droplets can contaminate other structural parts.

[0324] In the centrifugal atomization spraying device 100 of the present disclosure, while the barrier strips 42 of the outer cover 40 surround the centrifugal atomization disc 1010, the outer cover 40 is configured to be rotatably mounted on the device body 90, which can reduce the settlement of liquid on the barrier strip 42, avoid or reduce the accumulation of large droplets on the barrier strip 42, and avoid the user from seeing large droplets deposited on the outer cover 40.

[0325] In addition, the outer cover 40 of the present disclosure is detachable, which facilitates the replacement of worn or damaged outer covers 40, or facilitates the replacement of different models of outer covers 40 according to different needs. Among them, the barrier strips 42 of different models of outer covers 40 are different in density or length.

[0326] In the installation of the outer cover 40, the installation ring 41 of the outer cover 40 can be sleeved on the outside of the flow guide device 20 or the fixed seat 31 of the driving device 30, so as to realize the rotatable installation of the outer cover 40, and meanwhile: first, the outer cover 40 does not occupy the space between the flow guide device 20 and the centrifugal atomizing disc 10, and does not affect the cooperation between the flow guide device 20 and the centrifugal atomizing disc 10; second, the contact area between the outer cover 40 and the flow guide device 20 or between the outer cover 40 and the fixed seat 31 of the driving device 30 is large, the connection is more stable, the protection effect of the outer cover 40 on the centrifugal atomizing disc 10 is good, and the outer cover 40 is not easy to shake.

[0327] Optionally, the driving device 30 comprises a fixed seat 31 and a driving shaft 32, the fixed seat 31, the flow guide device 20 and the centrifugal atomizing disc 10 of the driving device 30 are arranged in the axial direction, the fixed seat 31 is connected with the flow guide device 20, and the driving shaft 32 is connected with the centrifugal atomizing disc 10. Exemplarily, the driving device 30 is a motor, the fixed seat 31 is a motor seat, and the driving shaft 32 is a motor shaft. Other structures (such as a stator and a rotor) of the motor are arranged in the inside of the motor seat.

[0328] In the optional embodiment, the installation ring 41 is sleeved on the outside of the flow guide device 20, and the installation ring 41 is rotatably connected with the flow guide device 20. The installation ring 41 is sleeved on the flow guide device 20, so that the installation ring 41 is closer to the centrifugal atomizing disc 10, it is easier to realize that the blocking strip 42 surrounds the outside of the centrifugal atomizing disc 10, the volume and the weight of the outer cover 40 are smaller, and it is easier to make the outer cover 40 rotate during the spraying operation.

[0329] Optionally, the device main body 90 is externally provided with a connecting track 70, and the installation ring 41 is rotatably installed on the connecting track 70, so that the outer cover 40 is rotatably connected with the device main body 90 through the installation ring 41. By configuring the connecting track 70, on the one hand, the rotatable installation of the outer cover 40 is realized, and the outer cover 40 is prevented from being separated from the device main body 90; on the other hand, the connecting track 70 plays a role in axially limiting and positioning the installation ring 41. When the external force tends to make the outer cover 40 rotate, the installation ring 41 can rotate around the device main body 90 along a predetermined track, the rotation of the outer cover 40 is stable, and the outer cover 40 is not easy to shake. The blocking strip 42 of the outer cover 40 can perform secondary atomization on the mist droplets flying out of the centrifugal atomizing disc 10, and the blocking strip 42 can also block and slow down the mist droplets thrown out of the centrifugal atomizing disc 10, so that the mist droplets are easy to be controlled by the wind field.

[0330] In an optional embodiment, the connecting rail 70 has a first limiting surface 711 facing the centrifugal atomizing disc 10, and a second limiting surface 721 facing away from the centrifugal atomizing disc 10. The first limiting surface 711 limits the movement of the mounting ring 41 away from the centrifugal atomizing disc 10, and the second limiting surface 721 limits the movement of the mounting ring 41 towards the centrifugal atomizing disc 10. The mounting ring 41 is limited in a certain axial space by the cooperation of the first limiting surface 711 and the second limiting surface 721. In the case of rotation of the outer cover 40, the outer cover 40 rotates along a certain trajectory stably towards the cooperation of the two limiting surfaces.

[0331] In an optional embodiment, the outer side of the connecting rail 70 is provided with an annular mounting groove 701, the groove opening of the mounting groove 701 is located on the outer periphery of the connecting rail 70, and the two groove side walls of the mounting groove 701 are divided into the first limiting surface 711 and the second limiting surface 721. Alternatively, the outer side of the connecting rail 70 is provided with a protrusion, the side of the protrusion facing away from the centrifugal atomizing disc 10 is the second limiting surface 721, and the side of the protrusion close to the centrifugal atomizing disc 10 is the first limiting surface 711.

[0332] Optionally, the outer side of the flow guide device 20 is provided with the connecting rail 70, the mounting ring 41 is sleeved on the outer periphery of the flow guide device 20, and the mounting ring 41 is mounted on the connecting rail 70.

[0333] Optionally, in the case that the outer side of the device main body 90 is provided with the connecting rail 70, the assembly between the mounting ring 41 and the device main body 90 is realized by the following way:

[0334] Referring to FIGS. 38-41, 43, and 45, the connecting rail 70 includes a first rail member 71 and a second rail member 72. The first rail member 71 is connected with the device main body 90, and can be a separate structure or an integral structure. The second rail member 72 is detachably connected with the first rail member 71. When the second rail member 72 is in an assembled state with the first rail member 71, it cooperates with the first rail member 71 to limit the axial movement of the mounting ring 41, prevents the mounting ring 41 from being separated from the device main body 90, and realizes the detachable and rotatable mounting of the mounting ring 41 on the device main body 90 through the connecting rail 70. When the second rail member 72 is in a state of being detached from the first rail member 71, the mounting ring 41 can be mounted to or removed from the device main body 90 from the outside.

[0335] In FIG. 36 to FIG. 38, the outer periphery of the flow guide device 20 is provided with a connecting track 70, and the mounting ring 41 is rotatably connected with the connecting track 70. For example, the connecting track 70 is arranged outside the flow guide device 20, and the mounting manner of the mounting ring 41 can be as follows: a first track member 71 is mounted to the outer periphery of the flow guide device 20, then the mounting ring 41 is sleeved outside the flow guide device 20, then a second track member 72 is mounted to the outer periphery of the flow guide device 20, and the second track member 72 is connected with the first track member 71 by screw locking or the like, so as to complete the axial limiting of the mounting ring 41 and realize the rotatable mounting of the mounting ring 41.

[0336] In other embodiments, the centrifugal atomization device can also be configured in the following manner to realize the mounting of the mounting ring 41: the mounting ring 41 is an elastic structure capable of being deformed (not shown in the figure), and when the outer cover 40 is mounted, the mounting ring 41 is deformed by being pulled to be capable of being sleeved outside the device main body 90; when the mounting ring 41 needs to be dismounted, the mounting ring 41 is deformed by being pulled to be separated from the device main body 90. Alternatively, the body structure of the flow guide device 20 includes two detachable members to realize the detachable connection between the mounting ring 41 and the flow guide device 20. Alternatively, the mounting ring 41 includes two detachable members to realize the detachable connection between the mounting ring 41 and the flow guide device 20.

[0337] It can be understood that the connecting track 70 is configured to include at least two detachable track members, which not only realizes the rotatable and detachable mounting of the mounting ring 41, but also does not require the mounting ring 41 to have elastic deformation, and does not require the mounting ring 41 to be configured to include multiple separate components. The mounting ring 41 can be configured as an integrally formed structure, the mounting ring 41 is not easy to deform and has higher structural strength, the mounting ring 41 is not easy to be separated from the device main body 90, the outer cover 40 is not easy to be loose and damaged, the outer cover 40 has a longer service life, and the outer cover 40 has high structural strength to ensure the reliable protection of the centrifugal atomization disc 10 by the outer cover 40. Similarly, the flow guide device 20 does not need to be configured to include multiple separate components, avoiding the flow guide device 20 from being configured as two or more separate components, thereby avoiding the flow guide device 20 from leaking liquid.

[0338] Optionally, as shown in FIGS. 38-45, when the connecting rail 70 comprises a first rail member 71 and a second rail member 72 that are detachably connected, the first rail member 71 and the second rail member 72 are arranged axially spaced apart, and the first rail member 71 and the second rail member 72 define a mounting groove 701 therebetween when they are in the assembled state. The outer periphery of the connecting rail 70 forms a groove for the mounting groove 701, and the mounting ring 41 is at least partially fitted into the mounting groove 701 through the groove of the outer periphery of the connecting rail 70, so that the mounting ring 41 is rotatably mounted on the connecting rail 70, thereby achieving the rotatable mounting of the outer cover 40. By arranging the first rail member and the second rail member axially spaced apart, only the first rail member, the mounting ring 41, and the second rail member need to be sequentially mounted axially, and the detachable and rotatable mounting of the mounting ring 41 can be achieved, and the mounting steps are simple.

[0339] In an optional embodiment, as shown in FIGS. 39-43, the first rail member 71 is a first rail plate, and the second rail member 72 is a second rail plate. The first limiting surface 711 is located on the side of the first rail plate close to the second rail plate, and the second limiting surface 721 is located on the side of the second rail plate close to the first rail plate. The mounting ring 41 is at least partially located between the first limiting surface 711 and the second limiting surface 721.

[0340] In an optional embodiment, the first rail member 71 and the second rail member 72 are both annular structures arranged around the first axis, and the mounting groove 701 is an annular groove. Optionally, the connecting rail 70 comprises one annular first rail member 71 and a plurality of arc-shaped second rail members 72 arranged in the circumferential direction. Optionally, the connecting rail 70 comprises one or more arc-shaped first rail members 71 and one or more arc-shaped second rail members 72.

[0341] In other embodiments, as shown in FIG. 38, the first track member 71 and the second track member 72 are arranged in a radial direction, and the second track member 72 is assembled with the first track member 71 to form a ring structure. When the mounting ring 41 is installed, the mounting ring 41 is first sleeved outside the device body 90, and then the first track member 71 is clamped from left to right outside the device body 90, and then the second track member 72 is clamped from right to left outside the device body 90. The first track member 71 is connected with the device body 90, and the second track member 72 is connected with the first track member 71. The first track member 71 is provided with a protrusion, and the second track member 72 is provided with a protrusion. The first track member 71 and the second track member 72 are clamped into the annular groove on the outer periphery of the mounting ring 41 through the protrusions, so that the mounting ring 41 is detachably and rotatably mounted on the device body 90 through the connecting track 70.

[0342] For the convenience of understanding, the following embodiments will continue to be described by taking the first track member 71 and the second track member 72 arranged in an axial direction as an example.

[0343] In an optional embodiment, as shown in FIG. 38 and FIG. 41, the cross section of the mounting ring 41 is similar to a "mountain" type structure. The mounting ring 41 includes a ring body 411 and a ring-shaped protrusion 412 arranged on the inner side of the ring body 411, and the ring-shaped protrusion 412 is clamped into the mounting groove 701. A part of the ring body 411 surrounds the outside of the first track member 71, a part of the ring body 411 surrounds the outside of the mounting groove 701, and a part of the ring body 411 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 matching surface 4111 and a second matching surface 4112, and the two sides of the ring-shaped protrusion 412 in the axial direction are connected with the first matching surface 4111 and the second matching surface 4112, respectively. The first matching surface 4111 surrounds the outer periphery of the first track member 71, and the first matching surface 4111 is used for limiting and matching with the first track member 71 in the radial direction. The second matching surface 4112 surrounds the outer periphery of the second track member 72, and the second matching surface 4112 is used for limiting and matching with the second track member 72 in the radial direction.

[0344] Referring to FIG. 38, the x direction is the radial direction of the outer cover 40, and in the case where the first rail member 71 and the second rail member 72 are detachably connected in the axial direction, the service life of the outer cover 40 can be prolonged. The inventor found that if the mounting ring 41 is sleeved on the connecting rail 70 in a way of expanding the mounting ring 41, and the annular protrusion 412 of the mounting ring 41 is clamped into the mounting groove 701 of the connecting rail 70, it will be difficult to sleeve the mounting ring 41 on the connecting rail 70, and the radial size of the annular protrusion 412 needs to be correspondingly reduced, so that the mounting ring 41 can be sleeved by expanding and temporarily deforming the mounting ring 41. However, the inventor found that during the rotation of the outer cover 40, the annular protrusion 412 will be worn out, and when the annular protrusion 412 is worn out to a certain extent, it will be out of the mounting groove 701 of the connecting rail 70. If the size of the annular protrusion 412 is small, the mounting ring 41 will be separated from the connecting rail 70 after a certain period of use, at which time the outer cover 40 needs to be replaced, and the user needs to replace the accessories. The inventor faces the problem of conflict between the service life of the outer cover 40 and the installation difficulty of the outer cover 40. In the embodiment, the first rail member 71 and the second rail member 72 are detachably connected in the axial direction, so that when the mounting ring 41 is installed on the connecting rail 70, the mounting ring 41 does not need to be expanded and deformed. Therefore, the problem of difficult installation of the mounting ring 41 on the outside of the connecting rail 70 due to the excessive radial size of the annular protrusion 412 can be overcome. Based on this, on the basis of the detachable connecting rail 70 in the axial direction, the radial size of the annular protrusion 412 on the inner side of the ring body 411 can be appropriately increased according to the needs. The larger the radial size of the annular protrusion 412, the longer the service life of the outer cover 40. Therefore, the embodiment is beneficial to prolong the service life of the outer cover 40, and the user does not need to frequently replace the outer cover 40 during use, and the use experience is good.

[0345] It should be noted that even if the mounting ring 41 includes the ring body 411 and does not include the annular protrusion 412, in the case where the connecting rail 70 includes the first rail member 71 and the second rail member 72 which are detachably arranged in the axial direction, and the mounting groove 701 is arranged on the outside of the connecting rail 70, and the mounting ring 41 is at least partially installed in the mounting groove 701, the radial size of the part of the mounting ring 41 inserted into the mounting groove 701 can be increased, thereby being beneficial to prolong the service life of the outer cover 40.

[0346] It can be understood that when the centrifugal atomization device with the fan 61 is applied to the plant protection vehicle 200, as shown in FIGS. 48 and 47, the outer cover 40 is vertical or substantially vertical relative to the ground. At this time, through the cooperation between the first matching surface 4111 and the first track member 71 and the second matching surface 4112 and the second track member 72, the outer cover 40 can be supported by the track member support matching surface, thereby supporting the outer cover 40, strengthening the stability of the outer cover 40, and reducing the vibration of the outer cover 40. Due to the undulation of the terrain, the plant protection vehicle 200 may vibrate up and down. Through the limiting cooperation of the first matching surface 4111 and the second matching surface 4112 with the connecting track 70, the outer cover 40 can rotate more stably, so that the central axis of the outer cover 40 is as collinear or horizontal as possible with the central axis of the centrifugal atomization disc 10, and the angle of the outer cover 40 is prevented from being overturned as much as possible. It can also be understood that when the centrifugal atomization device with the fan 61 is used, the airflow will be blown to the outer cover 40 along the axial direction. Through the limiting cooperation of the first matching surface 4111 and the second matching surface 4112 with the connecting track 70, it is also beneficial to enable the mounting ring 41 to resist wind force and not be easily deformed by torsion under the action of wind force, so that the mounting ring 41 can stably rotate.

[0347] In other embodiments, the mounting ring 41 can also be a circular ring structure without protrusions on the inner side, and the mounting ring 41 is directly assembled into the mounting groove 701, and the mounting ring 41 is not limitedly matched with the outer circumferential surface of the first track member 71 and the second track member 72.

[0348] In some embodiments, the first limiting surface 711 and the second limiting surface 721 are provided with protruding rolling members, which can rotate relative to the ring body 411, and the mounting ring 41 is matched with the outer circumferential surface of the first track member 71 and the second track member 72 through the rolling members. In this way, the rotation of the mounting ring 41 can be smoother. When the outer cover 40 is provided with the fan blade 44 and the outer cover 40 rotates by using the fan 61 to blow the airflow, the rolling members can make the wind more easily blow the outer cover 40 to rotate. In an optional embodiment, the rolling members are rolling balls installed on the inner wall of the ring body 411. In an optional embodiment, the rolling members are elastic rolling balls, which have a damping effect.

[0349] Optionally, referring to FIGS. 38 to 40, 44 and 45, the connecting track 70 further comprises a support portion 73, which is arranged between the first track member 71 and the second track member 72; the support portion 73 is located on the inner side of the mounting ring 41; the first track member 71 and the second track member 72 are annular plates, and the first track member 71 and the second track member 72 are sleeved on the outside of the flow guide device 20 or the fixing seat 31.

[0350] In an optional embodiment, the support portion 73 is arranged on the side of the first track member 71 close to the second track member 72, and the support portion 73 is integrally connected with the first track member 71. For example, in the assembly process, after the first track member 71 and the mounting ring 41 are assembled to the outside of the flow guide device 20, then the second track member 72 is assembled to 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 installed in place, at this time, the second track member 72 can be connected and fixed with the first track member 71 by screw locking or the like, and the rotatable installation of the mounting ring 41 is completed. In an optional embodiment, the support portion 73 can be a ring-shaped support plate, an arc-shaped support plate or a support column. One support portion 73 or a plurality of support portions 73 arranged around the central axis are arranged between the first track member 71 and the second track member 72.

[0351] In an optional embodiment, referring to FIGS. 43 and 44, the first track member 71, the support portion 73 and the second track member 72 are all provided with an axially through mounting hole to provide a screw locking position, so as to realize the locking fit between the first track member 71 and the second track member 72.

[0352] Optionally, referring to FIGS. 42 and 44, a plurality of mounting platforms 24 are arranged around the first axis on the outer periphery of the flow guide device 20, and the mounting platforms 24 provide a support surface close to the side of the centrifugal atomizing disc 10. The first track member 71 abuts against the support surface of the mounting platform 24 away from the side of the first track member 71, and the second track member 72 is arranged on the side of the first track member 71 away from the mounting platform 24 and close to the centrifugal atomizing disc 10. It can be understood that the end of the flow guide device 20 close to the centrifugal atomizing disc 10 is the front end of the flow guide device 20, and the outer periphery shape of the front end of the flow guide device 20 is smaller than that of the rear end, which facilitates the flow of liquid to the centrifugal atomizing disc 10. In this embodiment, the first track member 71, the mounting ring 41 and the second track member 72 are sequentially assembled to the flow guide device 20 from the front end of the flow guide device 20.

[0353] Optionally, based on the rotatable installation of the cover 40, the cover 40 of the centrifugal atomization device and the air-assisted spraying equipment is configured to rotate in the opposite direction of the centrifugal atomization disc 10 when the centrifugal atomization device is in the working state, that is, the centrifugal atomization disc 10 rotates in the first direction to spray the atomized liquid droplets outward, and the cover 40 rotates in the second direction, and the first direction is opposite to the second direction. For example, the first direction is clockwise and the second direction is counterclockwise, or the first direction is counterclockwise and the second direction is clockwise. It can be understood that when the centrifugal atomization device is working, the cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, and when the liquid droplets sprayed by the centrifugal atomization disc 10 hit the barrier strip 42, the barrier strip 42 has a movement trend opposite to the liquid droplets due to the opposite rotation of the cover 40, and the liquid droplets are more easily separated from the barrier strip 42.

[0354] When the centrifugal atomization device is working, the cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, which can bring at least one of the following effects: first, the movement trend of the centrifugal atomized droplets is opposite to the rotation trend of the barrier strip 42, and the droplets are more easily separated from the barrier strip 42; second, the barrier strip 42 of the counter-rotating cover 40 can reduce the speed of the centrifugal atomized droplets, so that the droplets can be more easily controlled by the air field blown by the fan 61, so that the atomized droplets can be stably blown by the fan 61 to the target area, and the mist field is more stable; third, the barrier strip 42 has a good re-atomization effect on the droplets. In an optional embodiment, when the centrifugal atomization device is in the working state, the cover 40 rotates in the opposite direction of the centrifugal atomization disc 10, and the rotation speed of the cover 40 is lower than that of the centrifugal atomization disc 10.

[0355] Several rotation modes of the cover 40 are provided below. One of the rotation modes of the cover 40: referring to FIG. 49, the cover 40 includes a mounting ring 41 and a plurality of fan blades 44, the mounting ring 41 is rotatably connected with the device body 90, for example, the mounting ring 41 is rotatably connected with the flow guide device 20, and the plurality of fan blades 44 surrounds the mounting ring 41. In this way, when the centrifugal atomization device is applied to the air-assisted spraying equipment with the fan 61, the fan 61 can be used to drive the cover 40 to rotate. The second rotation mode of the cover 40: the centrifugal atomization device includes a driver for driving the cover 40 to rotate, and the driver can be but is not limited to a motor; in an optional embodiment, the cover 40 further includes a rib and a connecting column, the connecting column is located at the central axis of the cover 40, the connecting column is connected with the mounting ring 41 through the rib, and the connecting column is connected with the motor shaft.

[0356] In other embodiments, the centrifugal atomization device is in a working state, and the outer cover 40 can also rotate in the same direction as the centrifugal atomization disc 10 under the driving of the motor, the blowing of the wind, the impact of the mist droplets, etc., and the rotating speed of the outer cover 40 is lower than that of the centrifugal atomization disc 10. Although the effect of the same direction rotation of the outer cover 40 is not as good as that of the direction rotation of the outer cover 40, compared with the case where the outer cover 40 is fixed, it is also beneficial to reduce the accumulation of liquid droplets on the blocking strips 42, thereby improving the back suction of the liquid droplets on the blocking strips 42.

[0357] Optionally, the outer cover 40 comprises an outer ring 43 surrounding the mounting ring 41, the outer ring 43 is connected to the mounting ring 41 by a plurality of connecting ribs, and a plurality of blocking strips 42 are arranged on one side of the outer ring 43 in the axial direction, and the blocking strips 42 are connected to the outer ring 43. In this embodiment, the outer ring 43 is arranged to connect the plurality of blocking strips 42 to the same outer ring 43, so that the outer ring 43 and the plurality of blocking strips 42 form a cover body surrounding the centrifugal atomization disc 10, and the outer ring 43 is connected to the mounting ring 41 by the connecting ribs, which is simple and stable in structure.

[0358] Optionally, the centrifugal atomization disc 10 comprises a disc body 11 and at least one set of atomization groups, the disc body 11 has an atomization surface 1101, and the atomization groups are arranged on the atomization surface 1101; each set of atomization groups comprises atomization protrusions 12 distributed at intervals around the center line of the disc body 11, and atomization flow channels 1201 are formed between adjacent atomization protrusions 12. Exemplarily, the side of the disc body 11 close to the flow guide device 20 is the atomization surface 1101, and three circles / three sets of atomization groups are arranged from inside to outside on the atomization surface 1101, the atomization protrusions 12 of the first set of atomization groups are strip-shaped protrusions extending spirally from inside to outside, the atomization protrusions 12 of the second set of atomization groups are columnar protrusions, and the atomization protrusions 12 of the third set of atomization groups are atomization teeth. The liquid is dispersed multiple times by the plurality of atomization groups, and the atomization effect is good.

[0359] Optionally, the flow guide device 20 is used to deliver liquid to the side of the centrifugal atomization disc 10 where the atomization groups are arranged, so that the liquid can enter the plurality of atomization flow channels 1201. Exemplarily, the flow guide device 20 comprises a flow guide housing and a flow guide pipe, the inside of the flow guide housing forms a flow guide cavity 22, the flow guide pipe is connected to the flow guide housing, the flow guide pipe is provided with a liquid inlet 21, the side of the flow guide housing close to the centrifugal atomization disc 10 is provided with a liquid outlet 23, the liquid inlet 21 communicates with the liquid outlet 23 through the flow guide cavity 22, the liquid inlet 21 is used to be connected to a liquid supply device (such as a liquid storage tank), under the action of a pump or other force, the liquid is delivered from the liquid supply device into the flow guide cavity 22, and then delivered from the liquid outlet 23 to the centrifugal atomization disc 10, so that the liquid enters the plurality of atomization flow channels 1201. In an optional embodiment, the mounting ring 41 of the outer cover 40 is sleeved on the outside of the flow guide housing.

[0360] Optionally, referring to FIG. 35, the barrier strip 42 is a spray tooth, and the inner side of the barrier strip 42 has a pointed end 421. The inner side of the barrier strip 42 refers to the side of the barrier strip 42 close to the centrifugal atomizing disc 10, i.e. the side of the barrier strip 42 close to the central axis of the housing 40. The pointed end 421 is used to break up droplets. When the droplets sprayed by the centrifugal atomizing disc 10 contact the pointed end 421 of the barrier strip 42, the droplets are broken up again by the pointed end 421 of the barrier strip 42, thereby achieving the effect of re-atomizing the droplets.

[0361] Please refer to FIGS. 46-48, which illustrate the air-blowing spraying device 100 of the present disclosure. The air-blowing spraying device comprises the aforementioned centrifugal atomizing device, and further comprises a fan 61 and a wind guide housing 62.

[0362] The centrifugal atomizing disc 10, the device main body 90, and the fan 61 are arranged in an axial direction. For example, the fan 61, the main body of the driving device 30, the flow guide device 20, and the centrifugal atomizing disc 10 are arranged in an axial direction from back to front. The centrifugal atomizing device is configured to atomize the liquid to be sprayed by the centrifugal atomizing disc 10, and to spray the atomized liquid by the centrifugal atomizing disc 10 substantially in a radial direction of the air-blowing spraying device. The effect of the spray emitted by the centrifugal atomizing disc 10 is similar to the schematic shown in the figure (the thick dashed line in the figure is only used to schematically show the path of the droplets, and cannot be used as the only limitation of the present disclosure). The fan 61 is located at the axial rear of the centrifugal atomizing disc 10, and is configured to blow the droplets emitted by the centrifugal atomizing disc 10 to a target area.

[0363] Referring to FIGS. 46 and 47, the wind guide housing 62 is provided with an air inlet and an air outlet at its two axial ends, respectively (the air inlet and the air outlet are schematically shown but not labeled in the figures). The end of the wind guide housing 62 provided with the air inlet is connected to the fan 61. The wind guide housing 62 is designed in a specific shape, which can guide the ambient airflow to flow along a predetermined path. The wind guide housing 62 is used in cooperation with the fan 61, which can make the droplets more accurately blown to the target area under the action of the wind, reduce the drift and waste of the droplets, and reduce the power requirement of the fan 61.

[0364] The air-blowing spraying device, by the cooperation of the centrifugal atomizing disc 10 and the fan 61, can spray the pesticide with good atomization and spraying effects, specifically:

[0365] First, finer atomized droplets can be obtained, and the fine mist droplets can penetrate the crop canopy more deeply in combination with the wind blowing effect, covering more leaf and fruit surfaces, and improving the utilization rate and control effect of pesticides. Second, the centrifugal atomization spraying equipment can control the rotational speed by adjusting the motor voltage, and then accurately control the droplet size. This flexibility allows precise adjustment of pesticide spraying according to different crop types, growth stages, and pest conditions. Third, it can improve the spraying efficiency. The centrifugal atomization spraying combined with the fan 61 blowing can directly deliver the mist to the target area, reducing the drift and waste of pesticide in the air, and improving the spraying efficiency. Fourth, it is not only suitable for pesticide spraying in large-area farmland, but also suitable for fine management of small-area crops in orchards, vegetable gardens, etc. Fifth, the centrifugal atomization disc 10 sprays mist droplets roughly along the radial direction outward, and the radial range of the mist field sprayed by the centrifugal atomization disc 10 is larger than that of the mist field sprayed by the pressure nozzle. Therefore, the fan 61 blows air forward behind the centrifugal atomization disc 10, which can use the air field to blow the mist field forward, so that the wind-blowing spraying equipment sprays a mist field that can cover a larger area. For example, when the wind-blowing spraying equipment sprays pesticide to the crops on the left side of the equipment, the mist field sprayed by the equipment can cover a larger up-down area and / or front-back area of the crops.

[0366] Optionally, the wind guide cover 62 includes a wind guide shell 621, and a fixed part located at the center of the wind guide shell 621. A tongue is arranged between the fixed part and the wind guide shell 621. The fixed seat 31 of the driving device 30 is connected with the fixed part at the center of the wind guide cover 62.

[0367] Optionally, as shown in FIG. 47, in the axial direction of the wind-blowing spraying equipment, the centrifugal atomization disc 10 is located outside the wind guide cover 62, i.e. the centrifugal atomization disc 10 is located on the side of the wind guide cover 62 away from the fan 61, and the wind guide cover 62 does not shield the outer periphery of the centrifugal atomization disc 10.

[0368] It can be understood that when the wind-blowing spraying equipment is applied on the unmanned vehicle, the wind-blowing spraying equipment is used to spray pesticide to the crops on the side of the unmanned vehicle, for example, to the crops on the left side, right side, front side, back side, etc. of the unmanned vehicle. By arranging the centrifugal atomization disc 10 outside the wind guide cover 62, the wind guide cover 62 is avoided from surrounding the outer circle of the centrifugal atomization disc 10. In this way, during spraying operation (for example, when the wind-blowing spraying equipment is configured to spray pesticide to the crops on the left side or upper left side of the unmanned vehicle), the small part of mist droplets sprayed outward by the centrifugal atomization disc 10 is reduced or avoided from floating in the air and finally settling on the inner wall of the wind guide cover 62, reducing the possibility of liquid droplets on the inner wall of the wind guide cover 62, reducing pollution and waste, and improving user experience.

[0369] 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.

[0370] Optionally, referring to Figures 46 and 47, the air guide cover 62 includes an air guide housing 621. The cross-sectional area of ​​the air outlet end of the air guide housing 621 is larger than the cross-sectional area of ​​the air inlet end. In other words, the air guide housing 621 is used to expand the blowing area from back to front, which is beneficial to expanding the coverage area of ​​the mist droplets sprayed by the air-assisted spraying equipment.

[0371] In an optional embodiment, 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 device 100 performs spraying operations, it can expand the upward and downward spraying range, allowing the centrifugal atomizing spraying device 100 on the unmanned vehicle to cover a larger area in the crop height direction, thereby improving the spraying effect. Referring to Figure 47, 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.

[0372] 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 disclosure, 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.

[0373] Referring to FIG. 47, the air-blast spraying device can be divided into a central region, a transition region, and a blast region along a radial direction thereof, wherein the centrifugal atomizing disc 10 is located in the central region, the plurality of baffles 42 of the outer cover 40 are located in the transition region, and the first and second blast amplification air ducts 6201 and 6202 are located in the blast region.

[0374] Exemplarily, FIG. 51 shows a schematic diagram of the regions in FIG. 50, wherein S1 is the aforementioned central region, S2 is the aforementioned transition region, S3 to S8 are located around the periphery of the transition region, S3 is a position blocked by the first tongue 622, S4 is a region blocked by the second tongue 623, S5 to S8 are blast regions, S5 and S6 are air outlets of the first and second blast amplification air ducts 6201 and 6202 respectively (S5 and S6 are located on the upper and lower sides of the centrifugal atomizing disc 10), and S7 and S8 are air outlets of the front-to-back air ducts (S7 and S8 are located on the left and right sides of the centrifugal atomizing disc 10). After the mist droplets are sprayed out from the central region S1, they pass through the transition region S2 where the baffles 42 are located, and are well blown forward when reaching the S5 to S8 regions. Of course, a part of the mist droplets can also be blown forward after leaving the transition region. In other embodiments, the positions of the air outlets of the air ducts can also be adjusted.

[0375] The baffles 42 are arranged in the transition region, which is conducive to reducing the speed of the mist droplets and making the air field easier to control the mist droplets and stabilize the mist field. It can also be understood that the baffles 42 arranged in the transition region are conducive to secondary atomization of the mist droplets. If a centrifugal atomizing spraying device 100 is expected to obtain mist droplets with smaller particle sizes, it is generally considered to increase the rotational speed of the centrifugal atomizing disc 10. However, if the rotational speed of the centrifugal atomizing disc 10 is increased, the mist droplets can still maintain a high centrifugal speed when reaching the blast amplification region. Thus, if a stable mist field is to be obtained, the fan 61 needs to be increased in speed. However, in the present embodiment, the baffles 42 can have the effect of dispersing and atomizing the mist droplets again and reducing the particle size of the mist droplets. In this way, mist droplets with smaller particle sizes can be obtained without increasing the rotational speed of the centrifugal atomizing disc 10 or the speed of the fan 61.

[0376] Please refer to FIG. 48, the vehicle-mounted spraying system of the present disclosure will be described below.

[0377] The vehicle-mounted spraying system comprises the aforementioned air-blast spraying device 100, and further comprises a plant protection vehicle 200, wherein the air-blast spraying device 100 is installed on the plant protection vehicle 200. The plant protection vehicle 200 can be an unmanned vehicle or a manned vehicle.

[0378] When the vehicle-mounted spraying system is working, the fan 61 of the air-assisted spraying device 100 is oriented towards the side of the plant protection vehicle 200 for spraying pesticide to crops on the left side, right side, front side, back side, left front, right front, left back, right back, etc. of the plant protection vehicle 200. As shown in FIG. 48, two air-assisted spraying devices 100 are arranged on the left and right sides of the vehicle body of the plant protection vehicle 200, the left air-assisted spraying device 100 is used for spraying pesticide to crops on the left side of the vehicle body, and the right air-assisted spraying device 100 is used for spraying pesticide to crops on the right side of the vehicle body. The orientation of the air-assisted spraying device 100 can be adjusted upwards and / or downwards, or towards the front and / or back of the vehicle.

[0379] In the present disclosure, by mounting the air-assisted spraying device 100 on the plant protection vehicle 200, the unmanned vehicle can walk in the field and automatically spray pesticide. The technology of the present disclosure has high application value in modern agriculture. This spraying method is suitable for various crops, has the advantages of adjustable spraying amount, adjustable droplet size, good atomization spraying effect, improved work efficiency, reduced labor cost, etc.

[0380] The vehicle-mounted spraying system of the present disclosure is suitable for spraying pesticide to various types of crops. For example, for low plant crops (peanuts, sweet potatoes, etc.), the plant height of these crops is relatively low. By adjusting the angle of the air-assisted spraying device 100, it can easily cover all parts of the plant, ensuring uniform pesticide spraying. For medium-height plant crops (cotton, soybeans, shelf cucumbers, shelf eggplants, corn, lemons, wheat, etc.), the centrifugal atomization device cooperates with the appropriate fan 61 to 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-assisted spraying device 100, so as to accurately spray the target area.

[0381] When the vehicle-mounted spraying system is applied to the field of agricultural and forestry plant protection, it can drive in farmland, orchard, vegetable garden, etc. As shown in FIG. 48, the pesticide is sprayed from the side to the crop plants, and the spraying effect is good. Due to the design of the centrifugal atomization device cooperating with the fan 61 for blowing, the droplets have a certain penetration, and the droplets can more accurately reach the target plant crops. The droplet size is small and uniformly distributed, and the droplets can enter the interior of the crop plants through the gaps between the leaves along with the airflow, which is beneficial to more completely cover the leaves, fruits, etc. of the crops, can improve the problem of uneven acceptance of pesticide by the outer and inner areas of the crops (for example, the outer end of the leaf can receive pesticide, but the root may not receive pesticide), can improve the problem of uneven acceptance of pesticide by the top and bottom of the crops, and improve the prevention and control effect.

[0382] Optionally, as shown in FIG. 48, the air-assisted spraying device 100 comprises a mounting seat 80, the motor is adjustably or fixedly mounted on the mounting seat 80, and the mounting seat 80 is adjustably or fixedly mounted on the plant protection vehicle 200.

[0383] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", are only used to distinguish in description, and have no special meaning.

[0384] In the description of the present specification, the description referring to the terms "an embodiment", "an example", and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0385] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0386] The technical principles of the present disclosure are described above in conjunction with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present disclosure, and cannot be interpreted in any way as a limitation on the scope of protection of the present disclosure. Based on the explanations here, those skilled in the art do not need to make creative efforts to conceive other specific embodiments of the present disclosure, which will fall within the scope of protection of the present disclosure. Industrial applicability

[0387] The centrifugal atomization device of the present disclosure generates centrifugal force by the high-speed rotating centrifugal atomization disc, uses the centrifugal force to throw out the liquid, and forms fine liquid particles after the liquid is dispersed and atomized in the process of being thrown out, and then sprays the atomized liquid droplets out of the centrifugal atomization disc. Compared with the pressure atomization method, the spraying is performed by using the centrifugal atomization method, the atomization effect is better, the generated mist droplets are more uniform, the waste of the liquid medicine can be effectively reduced, the utilization rate of the liquid medicine is improved, and the green and environmental protection requirements are met.

Claims

1. A centrifugal atomization device characterized by, A centrifugal atomization device for forming a forward-blowing atomized airflow under air flow cooperation, the centrifugal atomization device comprising a device body, a centrifugal atomization disc (10) and a cover (40); The device body comprises a driving device (30) connected with the centrifugal atomization disc (10), the driving device (30) being used for driving the centrifugal atomization disc (10) to rotate; The cover (40) comprises a plurality of baffles (42) arranged around the periphery of the centrifugal atomization disc (10) and extending in the downstream direction of the airflow.

2. The centrifugal atomization device of claim 1, wherein The cover (40) comprises a cover mounting portion (41) and a plurality of baffles (42) arranged at intervals between adjacent baffles (42), and the cover mounting portion (41) is connected with the device body.

3. Centrifugal atomization device according to claim 1 or 2, characterized in that The device body further comprises a flow guide device (20) arranged on the side of the centrifugal atomization disc (10) close to the driving device (30) and used for delivering liquid to the centrifugal atomization disc (10).

4. The centrifugal atomization device of claim 2, wherein, The cover (40) is rotatably connected with the device body.

5. The centrifugal atomization device of claim 4, wherein, The centrifugal atomization device is configured such that, when the centrifugal atomization device is in a working state, the centrifugal atomization disc (10) and the cover (40) both rotate relative to the flow guide device (20), and the cover (40) rotates in the opposite direction to the centrifugal atomization disc (10).

6. Centrifugal atomization device according to claim 4 or 5, characterized in that The cover (40) comprises a cover mounting portion (41) and a plurality of fan blades (44) arranged around the cover mounting portion (41); Alternatively, the centrifugal atomization device is provided with a driver connected with the cover (40) and used for driving the cover (40) to rotate.

7. The centrifugal atomization device according to any one of claims 1 to 6, characterized in that The centrifugal atomization disc (10) comprises a disc body (11) having an atomization surface (1101) and at least one set of atomization groups arranged on the atomization surface (1101); each set of atomization groups comprises atomization protrusions (12) arranged at intervals around the center line of the disc body (11), and adjacent atomization protrusions (12) form atomization flow channels (1201); In the centrifugal atomization disc (10), the atomization flow channels (1201) in the outermost set of atomization groups have a width of d1; adjacent baffles (42) form through channels (4201) therebetween, and the through channels (4201) have a width of d2; d2 / d1<8.

8. The centrifugal atomization device according to any one of claims 1 to 7, characterized in that The baffles (42) are atomization teeth, and the baffles (42) have sharp ends (421) on the side close to the centrifugal atomization disc (10), and the sharp ends (421) are used for breaking up liquid droplets.

9. The centrifugal atomization device according to any one of claims 1 to 8, characterized in that The driving device (30), the flow guide device (20) and the centrifugal atomization disc (10) are arranged in the axial direction; The cover mounting portion (41) is arranged on the side of the centrifugal atomization disc (10) close to the driving device (30) and connected with the flow guide device (20).

10. The centrifugal atomization device according to any one of claims 1 to 8, characterized in that The cover (40) has a front opening located inside the plurality of baffles (42), and a side of the centrifugal atomization disc (10) away from the flow guide device (20) is completely exposed by the front opening.

11. The centrifugal atomization device according to any one of claims 1 to 8, characterized in that The driving device (30) is an electric motor, which comprises a fixed seat (31) and a driving shaft (32); the fixed seat (31) of the electric motor, the flow guide device (20) and the centrifugal atomization disc (10) are arranged in an axial direction; the fixed seat (31) of the electric motor is fixedly connected with the flow guide device (20), and the driving shaft (32) of the electric motor penetrates through the flow guide device (20) to be connected with the centrifugal atomization disc (10); The flow guide device (20) is provided with a liquid inlet (21), a flow guide cavity (22) and a liquid outlet (23) which are in communication with each other, and the liquid outlet (23) is located on one side of the centrifugal atomization disc (10). The cover (40) comprises a cover mounting portion (41), which is a mounting ring, the mounting ring is sleeved on the outside of the flow guide device (20) and connected with the flow guide device (20), the cover (40) further comprises an outer ring (43), the outer ring (43) surrounds the outside of the mounting ring, the outer ring (43) is connected with the mounting ring, a plurality of baffles (42) are arranged on one side of the outer ring (43) in the axial direction, and the baffles (42) are connected with the outer ring (43).

12. The centrifugal atomization device according to any one of claims 1 to 8, characterized in that The centrifugal atomization disc (10) has a plurality of atomization flow channels (1201) arranged around the rotation axis thereof; The baffle (42) comprises a strip body portion (423) and an extended end portion (422) located on the front side of the strip body portion (423), the strip body portion (423) is located on the outside of the region where the atomization flow channel (1201) is located, and the extended end portion (422) protrudes forward relative to the region where the atomization flow channel (1201) is located.

13. The centrifugal atomization device according to any one of claims 1 to 8, characterized in that The centrifugal atomization device is configured such that, when the centrifugal atomization device is in a working state of atomization spraying, the rotation axis of the centrifugal atomization disc (10) is parallel to a horizontal plane or has an angle of less than 30 degrees with the horizontal plane.

14. The centrifugal atomization device according to any one of claims 1 to 13, characterized in that The centrifugal atomization disc (10) is used for rotating to throw out liquid outward, one surface thereof is an atomization surface (1101), the atomization surface (1101) has a plurality of atomization flow channels (1201) arranged around the rotation axis, and the driving device (30) is used for driving the centrifugal atomization disc (10) to rotate around the rotation axis; the cover (40) surrounds the centrifugal atomization disc (10) and is located at least partially on the outside of the atomization flow channels (1201) in the radial direction of the centrifugal atomization disc (10), so that the liquid thrown out of the atomization flow channels (1201) is broken up after impacting the cover (40).

15. The centrifugal atomization device of claim 14, wherein, The cover (40) is located at least partially in the direction in which the atomization flow channels (1201) are away from the rotation axis in the radial direction of the centrifugal atomization disc (10).

16. The centrifugal atomization device of claim 14, wherein, The centrifugal atomization disc (10) and the cover (40) are arranged in an axial direction and located on the front side of the device body.

17. The centrifugal atomization device of claim 14, wherein, The cover (40) comprises a cover mounting portion (41) and a plurality of barrier pieces (42); the plurality of barrier pieces (42) are arranged around the outer periphery of the centrifugal atomization disc (10); the barrier pieces (42) protrude forward relative to the atomization flow channel (1201) by a protruding distance d3; the atomization protrusions (12) located at the outermost circle of the disc body (11) are outer circle protrusions (121), the height of the outer circle protrusions (121) is d4; d3 < d4, 0.05 ≤ d3 / d4 ≤ 0.

4.

18. The centrifugal atomization device of claim 17, wherein, The outer periphery of the centrifugal atomization disc (10) in the radial direction is a disc outer periphery (1102), the barrier pieces (42) are arranged at intervals in the radial direction of the centrifugal atomization disc (10), and the radial distance between the barrier pieces (42) and the disc outer periphery (1102) is d5; 0.1 ≤ d3 / d5 ≤ 0.

3.

19. The centrifugal atomization device of claim 17, wherein, The barrier pieces (42) comprise a strip body portion (423) and an extended end portion (422) located at the front side of the strip body portion (423), the atomization surface (1101) is located on the side of the disc body (11) close to the device main body, and the extended end portion (422) protrudes forward relative to the atomization surface (1101); Alternatively, the atomization surface (1101) is located on the side of the disc body (11) away from the device main body, the atomization protrusions (12) located at the outermost circle of the disc body (11) are outer circle protrusions (121), and the extended end portion (422) protrudes forward relative to the outer circle protrusions (121).

20. The centrifugal atomization device of claim 17, wherein, The distance by which the barrier pieces (42) protrude forward relative to the atomization flow channel (1201) is a protruding distance d3, and 0.5 mm ≤ d3 ≤ 1 cm.

21. The centrifugal atomization apparatus according to any one of claims 1 to 20, wherein The cover (40) comprises a cover mounting portion (41) and a plurality of barrier pieces (42), and the cover mounting portion (41) is detachably connected with the device main body (90).

22. The centrifugal atomization device of claim 21, wherein, A connecting track (70) is arranged on the outside of the device main body (90), and the cover mounting portion (41) is rotatably connected with the connecting track (70).

23. The centrifugal atomization device of claim 22, wherein, The connecting track (70) comprises a first track member (71) and a second track member (72), the first track member (71) is connected with the device main body (90), and the second track member (72) is detachably connected with the first track member (71).

24. The centrifugal atomization device of claim 23, wherein, The first track member (71) and the second track member (72) are arranged at intervals in the axial direction, and an installation groove (701) is defined between the first track member (71) and the second track member (72), and the outer periphery of the connecting track (70) forms the groove opening of the installation groove (701); The cover mounting portion (41) is at least partially arranged in the installation groove (701), so that the cover mounting portion (41) is rotatably mounted on the connecting track (70).

25. The centrifugal atomization device of claim 24, wherein, The cover mounting portion (41) comprises a ring body (411) and a ring-shaped protrusion (412) arranged on the inner side of the ring body (411), the ring-shaped protrusion (412) is clamped into the mounting groove (701); part of the ring body (411) surrounds the outside of the first track member (71), and part of the ring body (411) surrounds the outside of the second track member (72).

26. The centrifugal atomization device of claim 24, wherein, The connecting track (70) further comprises a support portion (73) arranged between the first track member (71) and the second track member (72); the support portion (73) is located on the inner side of the cover mounting portion (41); The first track member (71) and the second track member (72) are annular plates, and the first track member (71) and the second track member (72) are sleeved on the outside of the flow guide device (20) or the driving device (30).

27. The centrifugal atomization apparatus of any of claims 21 to 26, wherein, The outer cover (40) further comprises an outer ring (43), one end of the barrier (42) is connected with the outer ring (43), and the other end extends in the axial direction away from the outer ring (43).

28. A centrifugal atomizing spray apparatus characterized by, The centrifugal atomization device comprises the centrifugal atomization disc (10), the device body (90) and the fan (61), and the fan (61) is arranged on the side of the device body (90) away from the centrifugal atomization disc (10). The centrifugal atomization disc (10), the device body (90) and the fan (61) are arranged in the axial direction, and the fan (61) is used for blowing the mist droplets sprayed by the centrifugal atomization disc (10) to a target area.

29. The centrifugal atomizing spray apparatus of claim 28 wherein, The centrifugal atomization device further comprises a wind guide cover (62), both ends of the wind guide cover (62) are respectively provided with an air inlet and an air outlet; one end of the wind guide cover (62) provided with the air inlet is connected with the fan (61), and the device body of the centrifugal atomization device is located in the inside of the wind guide cover (62). In the axial direction of the centrifugal atomization spraying equipment (100), the centrifugal atomization disc (10) is located outside the wind guide cover (62), or the centrifugal atomization disc (10) is located inside the wind guide cover (62).

30. The centrifugal atomizing spray apparatus of claim 28 wherein, The wind guide cover (62) is provided with a main air supply channel, and both ends of the main air supply channel are respectively communicated with the air inlet and the air outlet. In the radial direction of the centrifugal atomization spraying equipment (100), the barrier (42) is located between the centrifugal atomization disc (10) and the main air supply channel.

31. Centrifugal atomizing spraying apparatus according to any of claims 28 to 30, characterized in that The fan (61) is arranged on the side of the device body (90) away from the centrifugal atomization disc (10).

32. Centrifugal atomizing spraying apparatus according to any one of claims 28 to 31, characterized in that The centrifugal atomization spraying equipment (100) is an air-assisted spraying equipment, and the air-assisted spraying equipment further comprises a fan (61) and a wind guide cover (62). The centrifugal atomization disc (10), the device body (90) and the fan (61) are arranged in the axial direction, and the fan (61) is used for blowing the mist droplets sprayed by the centrifugal atomization disc (10) to a target area; both ends of the wind guide cover (62) are respectively provided with an air inlet and an air outlet, and one end of the wind guide cover (62) provided with the air inlet is connected with the fan (61).

33. A movable platform, characterized by The mobile platform is a vehicle-mounted spraying system, the centrifugal atomization spraying device (100) is a pneumatic spraying device, and the mobile body (200) is a plant protection vehicle.

34. The moveable platform of claim 33, wherein, The mobile platform is a vehicle-mounted spraying system, the centrifugal atomization spraying device (100) is a pneumatic spraying device, and the mobile body (200) is a plant protection vehicle.

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