Air-assisted centrifugal atomization apparatus, air guide cover and plant protection vehicle

Abstract

An air-assisted centrifugal atomization apparatus, an air guide cover and a plant protection vehicle. The air-assisted centrifugal atomization apparatus (100) comprises a centrifugal atomization device, an air guide cover (50) and an air supply device (60), wherein the centrifugal atomization device comprises a centrifugal atomization disk (10), the centrifugal atomization disk (10) having an axis of rotation, the centrifugal atomization disk (10) being provided with a plurality of atomization flow channels (101) that are distributed around the axis of rotation thereof, and the centrifugal atomization disk (10) being capable of rotating around the axis of rotation thereof to atomize a liquid and centrifugally eject same; and the air guide cover (50) comprises an air guide housing (51) and at least two air guide vanes, a rear opening (5101) being arranged at the rear end of the air guide housing (51), and a front opening (5102) being arranged at the front end of the air guide housing (51). In the air-assisted centrifugal atomization apparatus, the centrifugal atomization device uses the method of centrifugal ejection to atomize a liquid, such that the particle sizes of formed droplets are more uniform, and the atomization effect is better, thereby facilitating the improvement of a spray effect; and when the air guide cover is applied to the air-assisted centrifugal atomization apparatus, the expansion of a spray coverage area is facilitated.

Description

A wind-feeding centrifugal atomization device, a wind guide cover and a plant protection vehicle

[0001] The present disclosure claims priority to the following Chinese patent applications:

[0002] 1. The Chinese patent application with the application number 202411386484.8 and the patent application title "A wind-feeding centrifugal atomization device, a wind guide cover and a plant protection vehicle" filed on September 30, 2024 with the Chinese Patent Office.

[0003] 2. The Chinese patent application with the application number 202422416935.X and the patent application title "A wind-feeding centrifugal atomization device, a wind guide cover and a plant protection vehicle" filed on September 30, 2024 with the Chinese Patent Office.

[0004] 3. The Chinese patent application with the application number 202411386520.0 and the patent application title "A wind guide cover, a wind-feeding centrifugal atomization device and a vehicle-mounted spraying system" filed on September 30, 2024 with the Chinese Patent Office.

[0005] 4. The Chinese patent application with the application number 202422418135.1 and the patent application title "A wind guide cover, a wind-feeding centrifugal atomization device and a vehicle-mounted spraying system" filed on September 30, 2024 with the Chinese Patent Office.

[0006] The entire contents of the above patent applications are incorporated herein by reference. TECHNICAL FIELD

[0007] The present disclosure relates to the technical field of spraying devices, and in particular to a wind-feeding centrifugal atomization device, a wind guide cover and a plant protection vehicle. BACKGROUND

[0008] The main function of an atomization spraying device is to convert a liquid (such as water, pesticide, disinfectant, etc.) into fine droplets and spray them to a designated target area. In the related art, the main technologies of atomization spraying devices include pressure atomization, ultrasonic atomization, etc. The pressure atomization technology pressurizes the pesticide liquid through a liquid pump and atomizes it into fine droplets through a nozzle for spraying to the target area. However, the spraying effect of the spraying device in the related art is poor, the droplet size is uneven, which can easily lead to waste of pesticide and pollution to the environment. In the agricultural operation mode, the traditional spraying mode not only has low efficiency, but also causes serious harm to the soil, water source and surrounding ecosystem due to the excessive use or uneven distribution of pesticide, which is contrary to the development concept of green agriculture. SUMMARY

[0009] The purposes of the embodiments of the present disclosure include, for example, providing an air-borne centrifugal atomization device, a wind guide cover and a plant protection vehicle, which can realize the atomization of liquid by centrifugal throwing of a centrifugal atomization device, and the formed mist droplets have higher uniformity of particle size and better atomization effect, which is beneficial to improve the spraying effect and avoid damage to the environment caused by excessive use of pesticides, and at the same time meets the requirements of green technology and has significant environmental protection benefits.

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

[0011] An air-borne centrifugal atomization device includes a wind guide cover, a centrifugal atomization device and an air supply device; two ends of the wind guide cover in the axial direction are respectively provided with a rear opening and a front opening, and the end of the wind guide cover provided with the rear opening is connected with the air supply device; the centrifugal atomization device is used for spraying mist droplets to its outer periphery, and the centrifugal atomization device is located in front of the air supply device; the air supply device is used for blowing air flow to the front opening of the wind guide cover, so as to blow the mist droplets sprayed by the centrifugal atomization device forward.

[0012] The wind guide cover includes a wind guide shell and at least two wind guide pieces, the rear opening is arranged at the rear end of the wind guide shell, and the front opening is arranged at the front end of the wind guide shell.

[0013] The inner diameter of the wind guide shell gradually expands from the rear end to the front end, and the at least two wind guide pieces are respectively located on the upper and lower sides of the centrifugal atomization device and form an expanding air duct with the inner wall of the wind guide shell, so as to guide part of the air flow to diffuse in the upward and downward directions.

[0014] In an optional embodiment, the wind guide cover is configured to make the mist droplets sprayed by the air-borne centrifugal atomization device diffuse in the upward and downward directions under the action of the air flow with a greater amplitude than that in the horizontal direction.

[0015] In an optional embodiment, the included angle between the upper and lower inner wall surfaces of the front end of the wind guide shell and the horizontal plane is not zero.

[0016] In an optional embodiment, the upper and lower dimensions of the front opening are greater than the left and right dimensions of the front opening.

[0017] In an optional embodiment, the air deflector further comprises a first air deflector plate and a second air deflector plate arranged inside the air deflector shell, the first air deflector plate and the second air deflector plate are arranged in the up-down direction; the first air deflector plate and the second air deflector plate are configured to extend away from the center axis of the air deflector shell from one end close to the rear opening to one end close to the front opening; the side of the first air deflector plate away from the second air deflector plate is a first tongue outer side, and the first tongue outer side and the inner side of the air deflector shell define a first expansion air duct; the side of the second air deflector plate away from the first air deflector plate is a second tongue outer side, and the second tongue outer side and the inner side of the air deflector shell define a second expansion air duct.

[0018] In an optional embodiment, the air deflector shell comprises a first tongue-shaped plate portion and a second tongue-shaped plate portion; the first tongue-shaped plate portion is located on the side of the first air deflector plate away from the second air deflector plate, and the first expansion air duct is formed between the first tongue-shaped plate portion and the first air deflector plate; the second tongue-shaped plate portion is located on the side of the second air deflector plate away from the first air deflector plate, and the second expansion air duct is formed between the second tongue-shaped plate portion and the second air deflector plate; the first tongue-shaped plate portion and the second tongue-shaped plate portion are configured to extend away from the center axis of the air deflector shell from one end close to the rear opening to one end close to the front opening.

[0019] In an optional embodiment, the left side of the first air deflector plate and the left side of the second air deflector plate are spaced apart from each other, and a first blowing air duct is formed between the inner side of the air deflector shell, the left side of the first air deflector plate, and the left side of the second air deflector plate.

[0020] The right side of the first air deflector plate and the right side of the second air deflector plate are spaced apart from each other, and a second blowing air duct is formed between the inner side of the air deflector shell, the right side of the first air deflector plate, and the left side of the second air deflector plate.

[0021] In an optional embodiment, the front opening comprises an upper edge and a lower edge arranged on the upper and lower sides of the air deflector, and a left edge and a right edge arranged on the left and right sides of the air deflector; the left edge and the right edge are circular arc-shaped edges, and / or the upper edge and the lower edge are straight lines.

[0022] In an optional embodiment, a seat portion is arranged inside the air deflector shell; the first air deflector plate and the second air deflector plate are connected to the seat portion; and / or the air deflector shell is connected to the seat portion.

[0023] In an optional embodiment, the centrifugal atomization device is arranged on the side of the seat away from the air supply device, and the centrifugal atomization device is connected with the seat.

[0024] In an optional embodiment, the first air guide sheet and the second air guide sheet are connected with the seat near one end of the rear opening; and / or, the surfaces of the first air guide sheet and the second air guide sheet near one side of the central axis of the air guide cover are respectively connected with the seat through first connecting parts; and / or, the surfaces of the first air guide sheet and the second air guide sheet away from one side of the central axis of the air guide cover are respectively connected with the air guide shell through second connecting parts; and / or, the left and right sides of the first air guide sheet and the left and right sides of the second air guide sheet are respectively connected with the air guide shell through third connecting parts.

[0025] In an optional embodiment, the centrifugal atomization device comprises a device main body and a centrifugal atomization disc, and the device main body is connected with the air guide cover or the air supply device.

[0026] The device main body comprises a driving device and a flow guide device connected with each other, the flow guide device is used for conveying 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.

[0027] In an optional embodiment, the centrifugal atomization disc is located outside the air guide cover, and the centrifugal atomization disc is located on the side of the air guide cover away from the air supply device.

[0028] In an optional embodiment, the centrifugal atomization device further comprises a cover, the cover comprises a mounting ring and a plurality of barrier strips, the mounting ring is connected with the device main body, and the plurality of barrier strips are arranged around the outer periphery of the centrifugal atomization disc and are spaced apart between adjacent barrier strips.

[0029] An air guide cover suitable for being applied to the air supply centrifugal atomization device as described above;

[0030] The air guide cover comprises an air guide shell, a first air guide sheet and a second air guide sheet, both ends of the air guide shell in the axial direction are respectively provided with a rear opening and a front opening, the first air guide sheet and the second air guide sheet are arranged inside the air guide shell and are arranged in the up-down direction;

[0031] The first air guide sheet and the air guide shell define a first expansion air duct, and the second air guide sheet and the air guide shell define a second expansion air duct; the first expansion air duct and the second expansion air duct are both configured to be in communication with the rear opening at one end and in communication with the front opening at the other end, and to extend away from the central axis of the air guide shell from the one end near the rear opening to the one end near the front opening.

[0032] In an optional embodiment, the air deflector further comprises a wind gathering sheet arranged inside the air deflector shell, the wind gathering sheet extends from one end close to the rear opening to one end close to the front opening to a direction close to a first axis extending along the front-rear direction of the air deflector shell, so as to guide part of the air flow to the first axis.

[0033] In an optional embodiment, the wind gathering sheet has at least two pieces, wherein the two pieces of the wind gathering sheet are a first wind gathering sheet and a second wind gathering sheet, the first wind gathering sheet and the second wind gathering sheet are arranged along the left-right direction of the air deflector.

[0034] In an optional embodiment, the air deflector further comprises a seat arranged inside the air deflector shell, the first axis passes through the seat;

[0035] The first wind deflector sheet and the second wind deflector sheet are respectively connected with the seat;

[0036] The first wind gathering sheet is arranged spaced apart from the seat, a third air duct is formed between the first wind gathering sheet and the seat, the second wind gathering sheet is arranged spaced apart from the seat, a fourth air duct is formed between the second wind gathering sheet and the seat; the third air duct and the fourth air duct are both configured to communicate at both ends with the rear opening and the front opening respectively.

[0037] In an optional embodiment, the first wind gathering sheet is arranged spaced apart from the air deflector shell, a fifth air duct is formed between the first wind gathering sheet and the air deflector shell, the second wind gathering sheet is arranged spaced apart from the air deflector shell, a sixth air duct is formed between the second wind gathering sheet and the air deflector shell; the fifth air duct and the sixth air duct are both configured to communicate at both ends with the rear opening and the front opening respectively.

[0038] In an optional embodiment, the air deflector further comprises a first tongue side connecting plate, a second tongue side connecting plate, a third tongue side connecting plate and a fourth tongue side connecting plate;

[0039] The first wind deflector sheet has a first side and a second side on both sides in the circumferential direction, the first side is connected with the air deflector shell through the first tongue side connecting plate, and the second side is connected with the air deflector shell through the second tongue side connecting plate;

[0040] The second wind deflector sheet has a third side and a fourth side on both sides in the circumferential direction, the third side is connected with the air deflector shell through the third tongue side connecting plate, and the fourth side is connected with the air deflector shell through the fourth tongue side connecting plate;

[0041] One end of the first wind gathering sheet is connected to one side of the first lingual connecting plate away from the first amplification air duct, and the other end of the second wind gathering sheet is connected to one side of the third lingual connecting plate away from the second amplification air duct.

[0042] One end of the second wind gathering sheet is connected to one side of the second lingual connecting plate away from the first amplification air duct, and the other end of the second wind gathering sheet is connected to one side of the fourth lingual connecting plate away from the second amplification air duct.

[0043] In an optional embodiment, the air guide cover further comprises a rear shell, both ends of the rear shell are through in the axial direction, and the rear shell is connected to one end of the air guide shell provided with the rear opening.

[0044] The air guide shell and / or the rear shell are provided with a lateral opening, and the lateral opening is located at the rear side of the wind gathering sheet in the axial direction.

[0045] In an optional embodiment, the rear opening of the air guide shell comprises a first rear opening edge section and a second rear opening edge section.

[0046] Part of the rear shell is connected to the first rear opening edge section, part of the rear shell is concave relative to the second opening edge section in the direction close to the first axis, and the lateral opening is formed between the rear shell and the second opening edge section.

[0047] In an optional embodiment, the lateral opening comprises a first lateral opening and a second lateral opening, and the first lateral opening and the second lateral opening are arranged in the left-right direction.

[0048] A plant protection vehicle comprises a vehicle body and the air-borne centrifugal atomization device as described above, and the air-borne centrifugal atomization device is mounted on the vehicle body.

[0049] The air-borne centrifugal atomization device has the following advantages: the centrifugal atomization device adopts a centrifugal throwing mode to realize atomization of the liquid, the formed mist droplets have higher uniformity of particle size, and the atomization effect is better, which is beneficial to improving the spraying effect. In addition, the waste of liquid medicine can be reduced, the pollution to the environment can be reduced, and the requirements of green technology for efficient use of resources in many agricultural countries are met.

[0050] The air-borne centrifugal atomization device, through cooperation of the centrifugal atomization device, the air supply device and the air guide cover, is beneficial to expanding the spraying width of the device, expanding the mist field coverage range and improving the spraying efficiency, so as to reduce the spraying time and energy consumption per unit area, and meet the concept of energy saving and emission reduction in green agriculture.

[0051] The air guide cover is applied to the air conveying centrifugal atomization equipment, is favorable for expanding a spraying coverage area, and simultaneously enables mist drops to be more accurately attached to crops by optimizing air flow distribution, reduces pesticide loss and pollution to non-target areas caused by mist drop drift, and protects an agricultural ecological environment.

[0052] The plant protection vehicle body carries the air conveying centrifugal atomization equipment, can spray pesticide liquid to crops beside the vehicle body during vehicle body driving, has good spraying effect and high efficiency, can effectively reduce pesticide use amount, reduce pollution to soil and water sources, promotes sustainable development of agriculture, and meets long-term planning of green technology. BRIEF DESCRIPTION OF DRAWINGS

[0053] The present disclosure will be further described in detail below according to the drawings and embodiments.

[0054] Fig. 1 is a schematic diagram of the overall structure of the air conveying centrifugal atomization equipment according to the present disclosure.

[0055] Fig. 2 is a schematic diagram of spraying of the air conveying centrifugal atomization equipment according to the present disclosure.

[0056] Fig. 3 is a schematic diagram of the air conveying centrifugal atomization equipment according to the present disclosure with the air guide cover hidden.

[0057] Fig. 4 is a perspective view of the air guide cover according to the present disclosure (from the front side).

[0058] Fig. 5 is a perspective view of the air guide cover according to the present disclosure (from the rear side).

[0059] Fig. 6 is a front view of the air guide cover according to the present disclosure.

[0060] Fig. 7 is a schematic diagram of the air guide cover according to the present disclosure expanding the mist field in the air conveying centrifugal atomization equipment.

[0061] Fig. 8 is a schematic diagram of the air guide cover according to the present disclosure cut at a first position.

[0062] Fig. 9 is a sectional view of the air guide cover according to the present disclosure at the first position.

[0063] Fig. 10 is a schematic diagram of the air guide cover according to the present disclosure cut at a second position.

[0064] Fig. 11 is a sectional view of the air guide cover according to the present disclosure at the second position.

[0065] Fig. 12 is a schematic diagram of the three-dimensional structure of the driving device according to the present disclosure.

[0066] Fig. 13 is a schematic diagram of the structure of the centrifugal atomization device according to the present disclosure.

[0067] Fig. 14 is one of the application scenarios of the plant protection vehicle according to the present disclosure.

[0068] Fig. 15 is a second application scenario of the plant protection vehicle according to the embodiment of the present disclosure.

[0069] Fig. 16 illustrates the liquid droplet back suction phenomenon of the air-borne centrifugal atomization device in the development process.

[0070] Fig. 17 is a structural schematic view of the air guide cover provided with the air gathering sheet according to the embodiment of the present disclosure.

[0071] Fig. 18 is a schematic view of the cooperation between the air guide shell and the rear shell according to the embodiment of the present disclosure.

[0072] In the figures: 10, centrifugal atomization disc; 101, atomization flow channel; 20, flow guide device; 30, driving device; 40, outer cover; 41, mounting ring; 42, barrier strip; 50, air guide cover; 51, air guide shell; 5101, rear side opening; 5102, front side opening; 5103, upper edge; 5104, lower edge; 5106, left edge; 5107, right edge; 511, first tongue-shaped plate part; 512, second tongue-shaped plate part; 52, air guide sheet; 521, first air guide sheet; 522, second air guide sheet; 53, air gathering sheet; 531, first air gathering sheet; 532, second air gathering sheet; 501, first widened air channel; 502, second widened air channel; 503, first blowing air channel; 504, second blowing air channel; 5031, third air channel; 5032, fifth air channel; 5041, fourth air channel; 5042, sixth air channel; 54, seat part; 551, first connecting part; 552, second connecting part; 561, first tongue side connecting plate; 562, second tongue side connecting plate; 563, third tongue side connecting plate; 564, fourth tongue side connecting plate; 60, air blowing device; 61, rear shell; 70, lateral opening; 71, first side opening; 72, second side opening; 80, mounting seat; 100, air-borne centrifugal atomization device; 200, plant protection vehicle. DETAILED DESCRIPTION

[0073] To make the technical problems solved by the present disclosure, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present disclosure will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only 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 labor fall within the scope of protection of the present disclosure.

[0074] In the description of the present disclosure, unless explicitly defined and limited, the terms "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0075] In the present disclosure, unless explicitly defined and limited, the first feature "on" or "under" the second feature 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 "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0076] 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 through the spraying device. The spraying scheme in the related art often exposes the problem of poor spraying effect in actual application, for example, the problem of poor spraying effect caused by the concentrated spraying range and the relatively small coverage area of a single spraying equipment. At the same time, due to the uneven droplet size, it is easy to cause waste of pesticide and pollution to the environment. In the agricultural operation mode, the traditional spraying mode not only has low efficiency, but also causes serious harm to the soil, water source and surrounding ecosystem due to the excessive use or uneven distribution of pesticide, which is contrary to the development concept of green agriculture.

[0077] Exemplarily, for crop areas such as cotton fields, corn fields and dragon fruit fields, effective spraying of pesticides has become a key link to ensure the healthy growth of crops and prevent and control pests and diseases. The spraying scheme in the related art has the following problems: first, spraying from top to bottom, it is difficult for the pesticide to penetrate into the lower area of the crops, and the leaves in the lower area of the crops receive less pesticide. Second, a pressure atomizing nozzle is used to spray from the side of the crops, but the size and distribution of the droplets sprayed by the pressure atomizing nozzle are often not uniform, there may be large droplets and small droplets, and the large droplets may not be effectively attached to the target surface. Third, moreover, the spraying range of the pressure atomizing nozzle is relatively concentrated, and only a limited area around the nozzle can be covered, the spraying efficiency is low, in order to meet the requirement of large-area spraying, the number of nozzles has to be increased, and the structure is complex. Another problem caused by the concentrated spraying range is that there may be an excessive amount of pesticide sprayed in some areas.

[0078] With reference to FIGS. 1-18, based on this, the present disclosure provides a wind-feeding centrifugal atomization device 100, the front end of which sprays atomized droplets radially through a centrifugal atomization device, and a feeding device 60 feeds air behind the centrifugal atomization device to blow the atomized sprayed droplets to the target area. The wind-feeding centrifugal atomization device 100 can expand the coverage of the fog field, and has high spraying efficiency and good effect. The wind-feeding centrifugal atomization device 100 can be installed on a mobile 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 does not exclude handheld use.

[0079] The wind-feeding centrifugal atomization device 100 has the following effects: first, the atomized droplets are sprayed outward through centrifugal atomization, and the uniformity of the droplets is higher, and the droplet size can be controlled by the rotation speed of the centrifugal atomization disc 10. Compared with the pressure atomization method, the spraying is performed by 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. Second, the centrifugal atomization device cooperates with the feeding device 60, which is suitable for being carried on the plant protection vehicle 200 for application, so that after the centrifugal atomization device sprays the droplets outward, the feeding device 60 sprays the droplets to the crop area on the side of the plant protection vehicle 200. Third, cooperating with the wind deflector 50, the spray width can be effectively controlled, and the control effect of pesticide spraying is improved. Fourth, since the spray width and the coverage of the fog field of the device are expanded, the spraying efficiency is improved, thereby reducing the spraying time and energy consumption per unit area, which meets the concept of energy saving and emission reduction in green agriculture.

[0080] The present disclosure also provides a wind deflector 50, which, when applied to the wind-feeding centrifugal atomization device 100, is beneficial to expanding the spray width in the vertical direction of the device and improving the spraying effect. In the scenario of spraying pesticide liquid to crops in farmland, a larger spray width in the vertical direction can cover a higher range of crops, so that the crops on the upper, middle and lower layers can better receive the pesticide liquid, and the control effect of spraying the pesticide liquid is better. At the same time, by optimizing the airflow distribution, the droplets can be more accurately attached to the crops, reducing the loss of pesticide and pollution to non-target areas caused by droplet drift, and protecting the agricultural ecological environment.

[0081] The present disclosure also provides a plant protection vehicle 200, which carries the aforementioned wind-feeding centrifugal atomization device 100. The plant protection vehicle 200 can be, but is not limited to, an unmanned vehicle or a manned vehicle. The plant protection vehicle 200 can travel in farmland, orchards, vegetable gardens, etc., and spray pesticides to the crops from the side, which has good spraying effect, high spraying efficiency, is suitable for large-area farmland operation, can effectively reduce the amount of pesticide used, reduce pollution to the soil and water source, promote the sustainable development of agriculture, and meet the long-term planning of green technology.

[0082] 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 air-assisted centrifugal atomization equipment 100, the y direction and the x direction are marked in the drawings, taking the case that the center axes of the centrifugal atomization disc 10, the centrifugal atomization device, the air-assisted centrifugal atomization equipment 100, the outer cover 40, and the air supply device 60 are collinear as an example, L1 indicates the center axis. The left-right direction of the air-assisted centrifugal atomization equipment 100 is indicated by the x axis, the up-down direction is indicated by the z axis, and the front-rear direction is indicated by the y axis. When the air-assisted centrifugal atomization equipment 100 is applied, the air-assisted centrifugal atomization equipment 100 is generally assembled with the x axis direction being substantially parallel to the ground.

[0083] Referring to FIGS. 1-16, the air-assisted centrifugal atomization equipment 100 will be described below. The air-assisted centrifugal atomization equipment 100 includes a centrifugal atomization device, a wind guide cover 50, and an air supply device 60.

[0084] The centrifugal atomization device includes a centrifugal atomization disc 10 having a rotation axis, the centrifugal atomization disc 10 is provided with a plurality of atomization flow channels 101 distributed around the rotation axis thereof, and the centrifugal atomization disc 10 can rotate around the rotation axis thereof to atomize and centrifugally throw out liquid.

[0085] The centrifugal atomization device is located downstream of the air flow blown out by the air supply device 60. The center axis of the wind guide cover 50 is parallel or collinear to the rotation axis of the centrifugal atomization disc 10. The wind guide cover 50 is provided with a rear opening 5101 and a front opening 5102 at the two ends in the axial direction thereof, and the end of the wind guide cover 50 provided with the rear opening 5101 is connected to the air supply device 60, so that the air flow blown out by the air supply device 60 can flow to the front opening 5102 of the wind guide cover 50.

[0086] When the air-assisted atomization equipment is in operation, the centrifugal atomization device sprays mist droplets substantially radially outward, and the air supply device 60 blows air flow, which enters the wind guide cover 50 and flows forward under the guidance of the wind guide cover 50. The mist droplets diffused from the centrifugal atomization device to the outer periphery thereof can be blown forward under the action of the wind field. The mist droplets are initially provided with a certain area of mist field range by being centrifugally sprayed to the periphery thereof by the centrifugal atomization device, and under the action of the air flow blown out by the air supply device 60, the mist droplets can be blown to the target area in front of the equipment, so that the spray of the air-assisted centrifugal atomization equipment 100 can cover a larger target area and obtain a larger spray range.

[0087] The wind guide cover 50 includes a wind guide shell 51 and at least two wind guide pieces, the rear opening 5101 is arranged at the rear end of the wind guide shell 51, and the front opening 5102 is arranged at the front end of the wind guide shell 51; the inner diameter of the wind guide shell 51 gradually increases from the rear end thereof to the front end thereof, and the at least two wind guide pieces are respectively located on the upper and lower sides of the centrifugal atomization device and form an expanded wind channel with the inner wall of the wind guide shell 51 to guide and diffuse part of the air flow in the upward and downward directions.

[0088] The air guide cover 50 comprises an air guide shell 51 and at least two air guide sheets 52. A rear opening 5101 is arranged at the rear end of the air guide shell 51, and a front opening 5102 is arranged at the front end of the air guide shell 51. The internal space of the air guide shell 51 is used for airflow to pass through. The air guide shell 51 expands from the rear end to the front end, and the area of the front opening 5102 is smaller than that of the rear opening 5101. The internal space of the side of the air guide shell 51 close to the air supply device 60 is slightly smaller, which is convenient for concentrating air intake. The internal space of the side of the air guide shell 51 away from the air supply device 60 gradually increases, which is convenient for gradually diffusing the airflow outward.

[0089] The air guide shell 51 of the embodiment expands outward from the rear to the front. During the process of the airflow being blown from the rear opening 5101 to the front opening 5102 by the air guide shell 51, part or all of the airflow can be diffused outward under the guidance of the inner wall of the air guide shell 51. This not only has the effect of increasing the air outlet area and increasing the spraying range of the air supply centrifugal atomization device 100, but also is beneficial to improving the control of the air field on the mist droplets.

[0090] In the region of the air guide shell 51 that expands outward, the edge of the air field is farther away from the central axis of the device. In the process of the mist droplets being thrown away from the center, the centrifugal speed is reduced to a certain extent. The slower the centrifugal speed of the mist droplets, the easier it is to be controlled by the air field. The airflow at the edge of the air field is more likely to blow the mist droplets thrown by the centrifugal atomization forward. In this way, the requirement for the driving power of the air supply device is reduced, and the air supply device 60 does not need to increase the operating power, thereby reducing the operating noise and improving the user experience. If a nozzle that sprays by pressure from the rear to the front is used, the mist droplets sprayed by the pressure nozzle move more forward and only move a small range in the radial direction. Therefore, the pressure nozzle that sprays forward is matched with the air guide shell 51 that expands outward from the rear to the front, and the mist field expansion effect that can be achieved by the centrifugal atomization device and the air guide shell 51 that expands outward from the rear to the front cannot be achieved. If a plurality of pressure nozzles are arranged around the central axis at intervals and the pressure nozzles spray outward in the radial direction to match the air guide shell 51 that expands outward from the rear to the front, the structure is complex, the liquid supply mode of the pressure nozzle is also complex, and the pressure nozzle is prone to failure. Therefore, the mist field expansion effect that can be achieved by the centrifugal atomization device and the air guide shell 51 that expands outward from the rear to the front cannot be achieved. In addition, the use of the nozzle also has the problem of uneven mist droplet size.

[0091] In view of the problems of poor atomization effect and poor spraying effect of the current pressure atomization disc, the inventor considers using a centrifugal atomization device for spraying. The mist droplets atomized by the centrifugal atomization device have more uniform particle size, can better achieve the target mist droplet particle size, reduce some mist droplets with large particle size that cannot stay on the blade surface, reduce some mist droplets with small particle size that cannot reach the target area, have better atomization effect, and have good spraying effect.

[0092] Although the centrifugal atomization device can obtain good atomization effect. However, the conventional centrifugal atomization device is generally parallel to the ground plane of the rotation plane of the centrifugal atomization disc 10, that is, the rotation axis of the centrifugal atomization disc 10 is perpendicular to the ground plane, and the mist droplets centrifugally thrown out by the centrifugal atomization disc 10 at least partially reach the crops. If the centrifugal atomization device is directly mounted on the top of the vehicle body of the plant protection vehicle 200, the mist droplets are easy to fall on the vehicle body and cannot efficiently reach the crop area on the side of the vehicle body. For this purpose, it is considered to increase the rotation speed of the centrifugal atomization disc 10 and the like to increase the centrifugal throwing radius of the mist field and the centrifugal throwing speed of the mist droplets, so as to expect the mist droplets to penetrate into the inside of the crops, but there are still problems: first, the motor driving the rotation of the centrifugal atomization disc 10 is required to be high; second, the mist droplets flying to the left and right have a large speed and can reach the crop area on the left and right sides of the plant protection vehicle 200, but the mist droplets flying forward and backward are still not utilized, resulting in waste and pollution falling on the vehicle body; third, only a certain height area of the crops can be covered, which does not meet the spraying requirements. It is also considered to suspend a cantilever on the left and right sides of the vehicle body, the cantilever reaches above the crops, and the centrifugal atomization device is mounted on the cantilever, but in this way, the pesticide liquid sprayed by the centrifugal atomization device can only stay on the top layer of the crops. If the centrifugal atomization device is arranged perpendicular to the ground plane, the mist droplets thrown out by the centrifugal atomization disc 10 centrifugally fly in the vertical plane, so that the crops on the left and right sides of the vehicle body cannot be reached.

[0093] The wind-borne centrifugal atomization equipment 100 of the present disclosure is provided with a wind-borne device 60 at the rear side of the centrifugal atomization device. When the wind-borne centrifugal atomization equipment 100 is applied to the plant protection vehicle 200, the rotation plane of the centrifugal atomization disc 10 of the centrifugal atomization device is generally parallel to the vertical plane, that is, the rotation axis of the centrifugal atomization disc 10 is generally parallel to the ground plane (for example, the included angle between the rotation axis of the centrifugal atomization disc 10 and the horizontal plane is within 35 degrees), and the movement path of the mist droplets in the wind-borne centrifugal atomization equipment 100 is generally as shown in FIG. 2. The thick dashed line in FIG. 2 is only used to provide a schematic of part of the mist droplet path and cannot be the only limitation of the present disclosure. The centrifugal atomization device is arranged at the front side of the wind-borne device 60, and the centrifugal atomization device is used to atomize the liquid to be sprayed by the centrifugal atomization disc 10 and to spray the atomized liquid by the centrifugal atomization disc 10 generally along the radial direction of the wind-borne centrifugal atomization equipment 100. The wind-borne device 60 is located at the axial rear side of the centrifugal atomization disc 10 and blows the mist droplets to the target area by the action of the wind, changing the movement path of the centrifugally thrown mist droplets. In this way, the problem of poor atomization effect existing in the pressure atomization spraying equipment is improved, and the problems of waste of mist droplets and poor coverage of crops when the centrifugal atomization device is mounted on the vehicle body of the plant protection vehicle 200 are solved.

[0094] The air guide cover 50 is arranged to aggregate and guide the air blown by the air blowing device 60, so as to improve the air flow utilization efficiency, improve the accuracy of the spray coverage range, and control the amplitude and range of the mist field sprayed by the equipment through the shape of the rear opening 5101 of the air guide cover 50 and the shape of the internal air duct, so as to achieve the effect of expanding the spray coverage area, etc.

[0095] Exemplarily, the air guide cover 50 can be configured to make the upper and lower dimensions of the target area covered by the mist field sprayed by the air-borne centrifugal atomization equipment 100 greater than the left and right dimensions. Thus, when the air-borne centrifugal atomization equipment 100 is applied to the plant protection vehicle 200, the mist field sprayed by the air-borne centrifugal atomization equipment 100 can cover a higher plant height, and the mist droplets can cover the upper, middle and lower layers of the crop canopy as much as possible, so as to have a good pesticide protection effect. As shown in FIG. 7, the upper and lower diffusion degrees of the misted area are greater than the left and right diffusion degrees. It should be noted that the edges of the misted area shown in the figure are only examples.

[0096] Compared with conventional pressure atomization spraying, the air-borne centrifugal atomization equipment 100 can disperse liquid to form smaller droplets, and the droplet size can be controlled to be relatively uniform. The air-borne centrifugal atomization equipment 100 can form a wider spray coverage range, so that the pesticide liquid can uniformly cover the target area, and the spraying effect is good. The air-borne centrifugal atomization equipment 100 has strong controllability, and the droplet size and the spray amount can be controlled by adjusting the rotation speed, the liquid inlet amount, etc., so as to meet different operation requirements, realize accurate atomization control, and accurately adjust the pesticide spraying according to different crop types, growth stages and pest control situations. The flow channel inside the centrifugal atomization disc 10 is not easy to be blocked compared with a pressure nozzle. The mist droplets can penetrate the crop canopy more deeply under the action of wind blowing, so that more leaf surfaces and fruit surfaces can be covered, and the utilization rate and the control effect of the pesticide are improved. The air-borne centrifugal atomization equipment 100 can expand the pesticide coverage area and improve the spraying efficiency. The air-borne centrifugal atomization equipment 100 can directly send the mist droplets to the target area by combining with the air blowing device 60, so as to reduce the drift and waste of the pesticide liquid in the air, and improve the spraying efficiency. The air-borne centrifugal atomization equipment 100 is not only suitable for pesticide spraying in large-area farmland, but also suitable for fine management of small-range crops such as orchards and vegetable gardens. The air-borne centrifugal atomization equipment 100 has the advantages of adjustable spraying amount, adjustable droplet size, good atomization spraying effect, improved operation efficiency and reduced labor cost, etc.

[0097] The air-borne centrifugal atomization equipment 100 of the present disclosure can be applied to spray pesticides on crops.

[0098] Please refer to FIG. 11. The plant protection vehicle 200 of the present disclosure includes a vehicle body and the air-borne centrifugal atomization equipment 100, which is directly or indirectly mounted on the vehicle body.

[0099] Exemplarily, when it is needed to spray pesticides on cotton, corn, dragon fruit plants and other agricultural and forestry crops, the plant protection vehicle 200 walks between two adjacent rows of crops, and the centrifugal atomization device works to throw and spray the atomized droplets around the centrifugal atomization disc 10, and the air supply device 60 blows the atomized droplets to the left and / or right of the crop plants. As shown in FIG. 11, the plant protection vehicle 200 is an unmanned vehicle, and two air-borne centrifugal atomization devices 100 are arranged on the left and right sides of the vehicle body of the unmanned vehicle. The left air-borne centrifugal atomization device 100 is used to spray pesticide liquid to the left of the vehicle body, and the right air-borne centrifugal atomization device 100 is used to spray pesticide liquid to the right of the vehicle body. The orientation of the air-borne centrifugal atomization device 100 can be adjusted upward and / or downward, or adjusted toward the front and / or rear of the vehicle

[0100] When the plant protection vehicle 200 is applied to the field of agricultural and forestry plant protection, it can be driven in farmland, orchard, vegetable garden and other plots, and the pesticide is sprayed from the side to the crop plants, as shown in the figure, and the spraying effect is good. The air-borne centrifugal atomization device 100 of the plant protection vehicle 200 is designed with a centrifugal atomization device cooperating with an air supply device 60 to blow, and the mist droplets have a certain penetration, the mist droplets can more accurately reach the target plant crops, and the mist droplets have small particle size and uniform distribution. The mist 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 crop leaves, fruits and the like, can improve the problem of uneven acceptance of pesticide liquid by the outer and inner areas of the crops (for example, the outer end of the leaves can accept the pesticide liquid, but the roots may not accept the pesticide liquid), can improve the problem of uneven acceptance of pesticide liquid by the top and bottom of the crops, and improve the prevention and control effect.

[0101] The plant protection vehicle 200 of the present disclosure is suitable for spraying pesticides on various types of crops. For example, for medium-height plant crops (cotton, soybeans, shelf cucumbers, shelf eggplants, corn, lemons, wheat, etc.), the centrifugal atomization device cooperates with a suitable air supply device 60 to effectively blow the pesticide mist droplets onto the leaves and stems of the crops, improving the spraying effect. For low-height plant crops (peanuts, sweet potatoes, etc.), the plant height of these crops is relatively low, and by adjusting the angle of the air-borne centrifugal atomization device 100, it can easily cover all parts of the plants, ensuring uniform spraying of pesticides.

[0102] In an optional embodiment, the air-borne centrifugal atomization device 100 is configured such that the extent of the spread of the sprayed mist droplets in the up-down direction is greater than the extent of the spread in the horizontal direction. In an optional embodiment, the air-borne centrifugal atomization device 100 is configured by means of the design of the rear opening 5101 of the air deflector 50 or the design of the air channel inside the air deflector 50, etc. to guide the movement path and distribution range of the mist droplets, so that the mist droplets sprayed outward by the centrifugal atomization device under the action of the air field are sprayed to the front side of the air-borne centrifugal atomization device 100, and the mist droplets in the mist field sprayed by the air-borne centrifugal atomization device 100 exhibit a greater extent of spread in the up-down direction than in the horizontal direction.

[0103] It should be noted that when describing the direction of the air-borne centrifugal atomization device 100 or inside the device, the rotation axis of the centrifugal atomization disc 10 is taken as the central axis of the device, the central axis of the device extends in its own front-rear direction, and the mist droplets are generally blown to the front side of the device. When the air-borne centrifugal atomization device 100 is mounted on the vehicle body of the plant protection vehicle 200, if the rear opening 5101 of the air deflector 50 is directly opposite the left side of the plant protection vehicle 200, the air-borne centrifugal atomization device 100 is used to spray mist droplets to the front side of the device and the left side of the plant protection vehicle 200. Similarly, if the rear opening 5101 of the air deflector 50 is directly opposite the upper left side of the plant protection vehicle 200, the air-borne centrifugal atomization device 100 is used to spray mist droplets to the front side of the device and the upper left side of the plant protection vehicle 200.

[0104] By expanding the up-down spraying range of the air-borne centrifugal atomization device 100, the air-borne centrifugal atomization device 100 can be mounted on the vehicle body of the plant protection vehicle 200. Referring to FIGS. 11 and 12, when the plant protection vehicle 200 performs spraying operations, it walks on the land between two rows of crops. The plant protection vehicle 200 can adjust the driving speed according to the crop density. Due to the expansion of the up-down spraying range of the air-borne centrifugal atomization device 100, the air-borne centrifugal atomization device 100 can cover a larger height of crops. For many crops, the mist field sprayed by the air-borne centrifugal atomization device 100 of the present disclosure can cover the upper, middle and lower parts of the crops at the same time. In this case, the angle of the air-borne centrifugal atomization device 100 does not need to be adjusted during the driving process of the plant protection vehicle 200, i.e. the spraying requirements are met.

[0105] The reliable cooperation between the air-borne centrifugal atomization device 100 with an expanded up-down spraying range and the plant protection vehicle 200 can greatly improve the spraying efficiency. The air-borne centrifugal atomization device 100 can also be arranged on the left and right sides of the vehicle body of the plant protection vehicle 200. For some crops, the plant protection vehicle 200 can drive in one direction on the land between the first row and the second row of crops once, which can meet the spraying requirements.

[0106] In some other embodiments, the angle of the air-borne centrifugal atomization device 100 on the vehicle body can also be adjusted to adjust the spraying angle to accurately spray the target area.

[0107] In order to make the spraying range of the air-borne centrifugal atomization device 100 more scientific and make the crop receive liquid better when the plant protection vehicle 200 sprays liquid in the field, the structure of the air guide cover 50 is described below.

[0108] In an optional embodiment, the rear opening 5101 is circular to match the air outlet structure of the air supply device 60.

[0109] In an optional embodiment, the shape of the front opening 5102 is different from that of the rear opening 5101 to facilitate selection of different shapes of the front opening 5102 according to the needs of the mist field control, and the shape of the front opening 5102 affects the air outlet area.

[0110] In an optional embodiment, the front opening 5102 is circular, and the rear opening 5101 is symmetric about the center line thereof, and the center line of the front opening 5102 is collinear with the center line of the rear opening 5101, which is beneficial to improve the air flow utilization efficiency.

[0111] In an optional embodiment, the air guide cover 50 is configured to expand the up-down spraying range of the air-borne centrifugal atomization device 100. In this way, when the air-borne centrifugal atomization device 100 blows mist droplets directly at the target area, the up-down size of the range of the target area receiving the mist droplets is greater than the left-right size.

[0112] In an optional embodiment, referring to FIG. 5, the up-down size of the front opening 5102 is d1, and the left-right size of the front opening 5102 is d2, and d1 is greater than d2. By expanding the internal space of the air guide shell 51 from back to front and configuring the front opening 5102 of the air guide shell 51 to be expanded upward and downward, the airflow can be guided to diffuse upward and downward to a greater extent, thereby expanding the up-down range of the mist field sprayed forward by the device.

[0113] In this embodiment, when the up-down size d1 of the front opening 5102 is expanded, d2 is less than d1, that is, the left-right size d2 does not need to be expanded too much, which is beneficial to wind concentration and makes the airflow flow upward and downward to expand the height range of the mist droplets while reducing the excessive left-right size of the front opening 5102 to reduce the overall air outlet wind speed, so that the airflow blown out of the front opening 5102 of the air guide shell 51 ensures a certain flow rate and blows the mist droplets to the deep layer of the crops.

[0114] In an optional embodiment, the up-down size of the front opening 5102 is d1, and the left-right size of the front opening 5102 is d2; 0.5≤d2 / d1≤0.85.

[0115] In optional embodiments, the angle between the upper and lower inner wall surfaces of the front end of the air guide shell 51 and the horizontal plane is not zero. Referring to FIG. 2, the portion of the inner wall surface of the upper plate of the air guide shell 50 near the front end region does not extend forward in a horizontal manner like the uppermost dashed line, but continues to extend in a direction inclined relative to the horizontal plane to increase the widening effect of the upwardly blown mist airflow. Similarly, the portion of the inner wall surface of the lower plate of the air guide shell 50 near the front end region extends forward in a direction inclined relative to the horizontal plane to increase the widening effect of the downwardly blown mist airflow. Referring to FIG. 4, the portion of the inner wall surface of the plate 511 near the front end continues to extend upward and forward at an angle greater than 0 degrees, and the portion of the inner wall surface of the plate 512 near the front end continues to extend downward and forward at an angle greater than 0 degrees.

[0116] In optional embodiments, in order to obtain good upward and downward widening effects of the mist droplets, the air guide sheet 52 has at least two sheets, at least two of which are a first air guide sheet 521 (which can also be referred to as a first widening air guide sheet) and a second air guide sheet 522 (which can also be referred to as a second widening air guide sheet). The first air guide sheet 521 and the second air guide sheet 522 are at least partially arranged inside the air guide shell 51. The first air guide sheet 521 is located above the second air guide sheet 522, that is, the first air guide sheet 521 and the second air guide sheet 522 are arranged inside the air guide shell 51 and arranged in an upward and downward direction. The first air guide sheet 521 and the second air guide sheet 522 are both configured to extend in a direction away from the central axis of the air guide shell 51 from one end close to the rear side opening 5101 to one end close to the front side opening 5102. The side of the first air guide sheet 521 away from the second air guide sheet 522 is a first tongue outer side surface, and the first tongue outer side surface and the inner side surface of the air guide shell 51 define a first widening air duct 501. The side of the second air guide sheet 522 away from the first air guide sheet 521 is a second tongue outer side surface, and the second tongue outer side surface and the inner side surface of the air guide shell 51 define a second widening air duct 502.

[0117] The first and second expansion air ducts 501 and 502 have air inlets at their rear ends, which are in communication with the rear opening 5101. The first and second expansion air ducts 501 and 502 have air outlets at their rear ends, which are in communication with the front opening 5102. Please continue to refer to FIGS. 8-11, the first expansion air duct 501 extends upward from back to front, and the second expansion air duct 502 extends downward from back to front. The airflow blown by the air supply device 60 is blown forward along the axial direction, enters the inside of the air guide housing 51 through the rear opening 5101, part of the airflow enters the first expansion air duct 501 and is guided upward by the first tongue outer side, and the other part of the airflow enters the second expansion air duct 502 and is guided downward by the first tongue outer side. When the mist droplets thrown out by the centrifugal atomization device reach the front side area of the air outlets of the first and second expansion air ducts 501 and 502, they can be diffused upward and downward under the action of the airflow in the expansion air duct, thereby increasing the up-down size of the mist field coverage area.

[0118] It should be noted that the front opening 5102 of the air guide housing 51 can be in various shapes such as a shuttle shape or a circular shape, and under the arrangement of the first and second expansion air ducts 501 and 502, it can play a role in expanding the upward and downward spraying range.

[0119] In an optional embodiment, the air guide housing 51 includes a first tongue-shaped plate portion 511 and a second tongue-shaped plate portion 512, where the tongue-shaped plate portion refers to a curved plate portion. The first tongue-shaped plate portion 511 is located on the side of the first air guide sheet 521 away from the second air guide sheet 522, and the first expansion air duct 501 is formed between the first tongue-shaped plate portion 511 and the first air guide sheet 521. The second tongue-shaped plate portion 512 is located on the side of the second air guide sheet 522 away from the first air guide sheet 521, and the second expansion air duct 502 is formed between the second tongue-shaped plate portion 512 and the second air guide sheet 522. The first and second tongue-shaped plate portions 511 and 512 are configured to extend away from the central axis of the air guide housing 51 from one end close to the rear opening 5101 to one end close to the front opening 5102. At the upper and lower ends of the air guide housing 51, the first and second tongue-shaped plate portions 511 and 512 have a certain width, so that when the airflow contacts the inner side of the air guide housing 51, it can be gradually guided forward and outward by the arc-shaped tongue-shaped plate portions, thereby reducing the airflow speed loss.

[0120] In an optional embodiment, referring to FIGS. 8-11, the first air guide 521 and the second air guide 522 are both outwardly curved arc-shaped plates, and the first air guide 521 and the second air guide 522 are arranged in a similar "8" shape from back to front to achieve a better up-and-down amplification effect. When the airflow flows along the first tongue outer side, the airflow is accelerated, and the airflow obtains a larger upward jet speed at the front end edge of the first air guide 521. Similarly, when the airflow flows along the second tongue outer side, the airflow is accelerated, and the airflow obtains a larger downward jet speed at the front end edge of the second air guide 522. In this way, when the airflow blows out of the air outlet of the first amplification air duct 501 and the second amplification air duct 502, a larger wind speed can be obtained, the mist droplets on the front side of the edge of the air guide shell 51 are blown forward, and the mist droplets that are not controlled by the wind field due to excessive centrifugal speed and fly out of the air guide shell 51 are reduced, so that the mist field is unstable. The situation is avoided, and the mist field is further avoided.

[0121] The inventor found that in the case where the first air guide 521 and the second air guide 522 are both outwardly curved arc-shaped plates, although the airflow obtains a larger wind speed when it leaves the first air guide 521 and the second air guide 522, if the curvature of the first air guide 521 and the second air guide 522 is increased, the tendency of the airflow to spread upward and downward is too large, and the mist droplets cannot be blown forward to a target area (such as corn) that is a certain distance away from the centrifugal atomizing disc 10. In some cases, if the centrifugal atomizing disc 10 rotates too fast, the mist droplets have too fast a centrifugal speed, or the crop requires a higher wind force for deep spraying, the air guide 52 with a larger curvature can cause insufficient forward sending distance of the mist droplets. For example, in some cases, the airflow can not be able to stably control the mist field. In order to make the wind sending centrifugal atomizing device 100 more adaptable, the inventor configures the air guide cover 50 as follows:

[0122] Referring to FIG. 11, the front end of the first air guide 521 and the front end of the second air guide 522 are a certain distance away from the front side opening 5102 of the air guide shell 51, and the first air guide 521 and the second air guide 522 are slightly shorter than the air guide shell 51. In this way, as shown in FIG. 11, as long as the shell part of the air guide shell 51 on the upper side of the first amplification air duct 501 and the shell part of the air guide shell 51 on the lower side of the second amplification air duct 502 are relatively flat near the front side opening 5102, the airflow can be blown forward. Satisfying the wind field to obtain the up-and-down amplification tendency of the mist droplets while obtaining a larger tendency to be blown forward is conducive to the stability of the mist field and the sending of the mist droplets to a farther target position.

[0123] Please continue to refer to Figure 11, in order to balance the first expansion air duct 501, the second expansion air duct 502, the outflow wind speed, the expansion of the mist droplets up and down blowing range, the performance of each item of the mist droplets forward blowing, on the basis of the structure described above in the embodiment, the first tongue-shaped plate part 511, the second tongue-shaped plate part 512 has a curved plate, two tongue-shaped plate parts are curved, the first tongue-shaped plate part 511 and the second tongue-shaped plate part 512 are configured as follows: the rear part is curved and the arc center is towards the outside of the air guide shell 51, the front part is curved and the arc center is towards the inside of the air guide shell 51. As shown in Figure 11, a part of the airflow obtains a larger flow rate under the guidance of the first air guide sheet 521 and the second air guide sheet 522, and a part of the airflow is blown outward and forward under the guidance of the first tongue-shaped plate part 511 and the second tongue-shaped plate part 512. The two airflows converge at the front side opening 5102 of the air guide shell 51, which can blow the mist droplets forward, upward and downward, obtain a better and more stable spraying mist field, and is suitable for spraying pesticide on crops to the side of the plant protection vehicle 200, and the spraying effect is good.

[0124] In other embodiments, the first air guide sheet 521 and the second air guide sheet 522 can also be inclined plates or other shapes, and the first shell part and the second shell part of the air guide shell 51 can also be inclined plates or other shapes.

[0125] In an optional implementation, the left side of the first air guide sheet 521 and the left side of the second air guide sheet 522 are spaced apart from each other, and the inner side of the air guide shell 51, the left side of the first air guide sheet 521 and the left side of the second air guide sheet 522 form a first blowing air duct 503. The right side of the first air guide sheet 521 and the right side of the second air guide sheet 522 are spaced apart from each other, and the inner side of the air guide shell 51, the right side of the first air guide sheet 521 and the left side of the second air guide sheet 522 form a second blowing air duct 504. The first blowing air duct 503 and the second blowing air duct 504 are configured to communicate with the rear side opening 5101 at the rear end and communicate with the front side opening 5102 at the front end.

[0126] In the air guide cover 50, the first expansion air duct 501 and the second expansion air duct 502 allow the mist droplets to diffuse upward and downward while being blown forward, covering a larger up-down area of the target area. Moreover, the first blowing air duct 503 and the second blowing air duct 504 are used for allowing the airflow to pass directly, which can be mainly used for blowing the mist droplets directly forward, which are thrown out by the centrifugal atomization disc 10, so as to allow the mist field to cover the middle part of the area opposite to the air guide cover 100. It should be noted that the airflow at the outer edge of the first blowing air duct 503 and the outer edge of the second blowing air duct 504 can also have a tendency to diffuse the mist droplets to the left and right for a certain distance under the guidance of the air guide shell 51.

[0127] In optional embodiments, in the case of the first widening air duct 501, the second widening air duct 502, the first blowing air duct 503, and the second blowing air duct 504 inside the air guide hood 50, referring to FIG. 6 and FIG. 7, the front side opening 5102 includes an upper opening edge 5103 and a lower opening edge 5104 on the upper and lower sides of the air guide hood 50, and includes a left opening edge 5106 and a right opening edge 5107 on the left and right sides of the air guide hood 50. The airflow blown by the first widening air duct 501 is at least partially sent out through the upper opening edge 5103, the airflow blown by the second widening air duct 502 is at least partially sent out through the lower opening edge 5104, the airflow blown by the first blowing air duct 503 is at least partially sent out through the left opening edge 5106, and the airflow blown by the second blowing air duct 504 is at least partially sent out through the right opening edge 5107.

[0128] In optional embodiments, the upper opening edge 5103 and the lower opening edge 5104 are linear or substantially linear, and have a certain width. Compared with the case where the front side opening 5102 is circular, the upper opening edge 5103 and the lower opening edge 5104 in this embodiment have a certain width, so that the uppermost region and the lowermost region of the mist field blown forward by the centrifugal atomization device 100 cover a wider crop distance.

[0129] In optional embodiments, the left opening edge 5106 and the right opening edge 5107 are circular arc-shaped opening edges, and the centers of the arcs of the left opening edge 5106 and the right opening edge 5107 are preferably located on the central axis of the centrifugal atomization disc 10. In this way, the radial distances from the centrifugal atomization disc 10 to each part of the left opening edge 5106 and the right opening edge 5107 are substantially uniform, so that the centrifugal speeds of the mist droplets in front of the left opening edge 5106 and the right opening edge 5107 are similar, and substantially all of the mist droplets can be captured by the airflow and blown together to the target area, so that the mist field is uniform and stable.

[0130] In other embodiments, the front side opening 5102 can also be in the shape of an ellipse or the like.

[0131] In optional embodiments, the seat portion 54 is further included, and the seat portion 54 is arranged inside the air guide shell 51, and the central axis of the air guide shell 51 passes through the seat portion 54. The first air guide sheet 521 and the second air guide sheet 522 are connected with the seat portion 54, and / or the air guide device 20 is directly or indirectly connected with the seat portion 54.

[0132] The seat 54 can support the air guide shell 51 from the middle to the outside, and strengthen the structural stability of the air guide cover 50. When the air supply centrifugal atomization device 100 is mounted on the vehicle body of the plant protection vehicle 200, the plant protection vehicle 200 often needs to climb over obstacles when driving in the farmland, which may cause a certain bump. Although the vibration of the air supply centrifugal atomization device 100 can be reduced through shock absorption design, the air guide cover 50 will inevitably vibrate during driving. By providing a support point in the middle through the seat 54, the deformation of the air guide shell 51 during the bumping vibration is reduced, or the deformation of each air duct is reduced, thereby facilitating the provision of a more stable wind field, and further obtaining a more stable mist field, and more accurately and stably blowing the liquid medicine to the target area.

[0133] In an optional embodiment, the rear end of the first air guide sheet 521 and the rear end of the second air guide sheet 522 are connected to the outer periphery of the seat 54. The seat 54 directly fixes the rear end of the air guide sheet 52, and ensures the structural stability of the air guide sheet 52 when the expanded air duct enters the airflow.

[0134] In an optional embodiment, the seat 54 also provides a centrifugal atomization device mounting position. The centrifugal atomization device is arranged on the side of the seat 54 away from the air supply device 60, and is fixed on the seat 54 by fastening, buckling, or the like. In an optional embodiment, the centrifugal atomization device includes a driving device 30, a flow guide device 20, and a centrifugal atomization disc 10, and the shell of the driving device 30 is fixed on the seat 54.

[0135] In an optional embodiment, the first blowing air duct 503 and the second blowing air duct 504 are located on the left and right sides of the seat 54.

[0136] In an optional embodiment, one end of the first air guide sheet 521 and the second air guide sheet 522 close to the rear side opening 5101 is connected to the seat 54, and the side of the first air guide sheet 521 and the second air guide sheet 522 close to the center axis of the air guide cover 50 is connected to the seat 54 through the first connecting part 551. It can be understood that the front end of the air guide sheet 52 needs to maintain a certain distance from the front end of the air guide shell 51 to form an expanded air duct air outlet. By arranging the first connecting part 551 on the inner side of the first air guide sheet 521 and the second air guide sheet 522, the ability of the first air guide sheet 521 and the second air guide sheet 522 to resist inward deformation can be improved, and the shape of the air guide sheet 52 can be maintained to diffuse the airflow upward and downward.

[0137] In an optional embodiment, the surfaces of the first air guide fin 521 and the second air guide fin 522 away from the central axis of the air guide cover 50 are connected to the air guide shell 51 through the second connecting portions 552. The second connecting portions 552 are arranged to connect the air guide shell 51, the air guide fin 52 and the seat portion 54 through the second connecting portions 552, thereby supporting the air guide fin and the air guide shell 51, improving the anti-deformation ability in the vibration condition, and improving the stability of the wind field and the fog field without affecting the air flow.

[0138] In an optional embodiment, the left side of the first air guide fin 521, the right side of the first air guide fin 521, the left side of the second air guide fin 522 and the right side of the second air guide fin 522 are connected to the air guide shell 51 through the third connecting portions. The third connecting portions can be arranged to strengthen the structural stability of the air guide fin 52, and the third connecting portions are used in cooperation with the air guide shell 51 and the air guide fin 52 to form an expansion air duct, which is separated from the blowing air duct.

[0139] In an optional embodiment, the first connecting portions 551, the second connecting portions 552 and the third connecting portions are connecting rib plates.

[0140] In an optional embodiment, the centrifugal atomization device includes a device main body and a centrifugal atomization disc 10. The device main body includes a flow guide device 20 and a driving device 30 connected to each other. The flow guide device 20 is used to deliver liquid to the centrifugal atomization disc 10. The driving device 30 includes a fixed seat and a driving shaft. The fixed seat of the driving device 30 is connected to the flow guide device 20, and the driving shaft of the driving device 30 is connected to 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. The device main body is connected to the air guide cover 50 or the air supply device 60.

[0141] The driving device 30 can be, but is not limited to, a motor. The flow guide device 20 is a flow guide shell and a flow guide pipe. The flow guide shell has a flow guide cavity formed inside. The flow guide pipe is connected to the flow guide shell. The flow guide pipe is provided with a liquid inlet. The side of the flow guide shell close to the centrifugal atomization disc 10 is provided with a liquid outlet. The liquid inlet is in communication with the liquid outlet through the flow guide cavity. The liquid inlet is used to be connected to a liquid supply equipment (such as a liquid storage tank). Under the action of a pump or other force, the liquid is delivered from the liquid supply equipment to the flow guide cavity and then to the centrifugal atomization disc 10 through the liquid outlet, so that the liquid enters the plurality of atomization flow channels 101. The air supply device 60 includes a fan.

[0142] In an optional embodiment, the driving device 30 is installed on the side of the seat portion 54 inside the flow guide cover away from the air supply device 60.

[0143] In an optional embodiment, referring to FIG. 1 and FIG. 2, in the axial direction of the air-borne centrifugal atomization device 100, the centrifugal atomization disc 10 is located outside the air guide cover 50, i.e. the centrifugal atomization disc 10 is located on the side of the air guide cover 50 away from the air supply device 60, on the front side of the front side opening 5102 of the air guide cover 50. The air guide cover 50 does not shield the outer periphery of the centrifugal atomization disc 10.

[0144] It can be understood that when the air-borne centrifugal atomization device 100 is applied on the plant protection vehicle 200, the air-borne centrifugal atomization device 100 is used to spray pesticide liquid to the crops on the left 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 air guide cover 50, the air guide cover 50 is avoided to surround the outer periphery of the centrifugal atomization disc 10. In this way, during the spraying operation (for example, when the air-borne centrifugal atomization device 100 is configured to spray pesticide liquid 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 are reduced or avoided to float in the air and finally settle on the inner wall of the air guide cover 50, reducing the possibility of liquid droplets on the inner wall of the air guide cover 50, reducing the pollution and waste, and improving the user experience.

[0145] In other embodiments, not shown in the figure, in the axial direction of the air-borne centrifugal atomization device 100, the centrifugal atomization disc 10 is located inside the air guide cover 50, between the front side opening 5102 and the rear side opening 5101 of the air guide cover 51.

[0146] In an optional embodiment, referring to FIG. 1, FIG. 2, FIG. 12 and FIG. 13, the centrifugal atomization device is further provided with a cover 40, which includes a mounting ring 41 (also referred to as a cover mounting portion) and a plurality of barrier strips 42 connected with the mounting ring 41. The mounting ring 41 is connected with the device main body. The plurality of barrier strips 42 surround the outer periphery of the centrifugal atomization disc 10, and extend a certain distance from back to front, and are spaced apart between adjacent barrier strips 42. In this way, the plurality of barrier strips 42 surround the outside of the centrifugal atomization disc 10, which can protect the centrifugal atomization disc 10.

[0147] The outer cover 40 plays a role of protecting the centrifugal atomization disc 10. Exemplarily, if corn leaves or other leaves or foreign matters accidentally extend to the area near the centrifugal atomization disc 10, the leaves or foreign matters are first blocked by the blocking strips 42 surrounding the centrifugal atomization disc 10, and the blocking strips 42 of the outer cover 40 play a role of blocking the leaves or foreign matters from approaching the centrifugal atomization disc 10. In the state that the centrifugal atomization disc 10 is rotating, the blocking strips 42 can prevent the leaves or foreign matters 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 strips 42 can block the leaves or foreign matters, and prevent the centrifugal atomization disc 10 from being scratched or damaged. It can be understood that the adjacent blocking strips 42 are spaced from each other, and a passing channel is formed between the adjacent blocking strips 42, and the passing channel allows the atomized liquid droplets centrifugally thrown out by the centrifugal atomization disc 10 to pass through. The outer cover 40 is provided without affecting the function of the centrifugal atomization disc 10 to throw out the atomized liquid droplets outward.

[0148] In the centrifugal atomization device of the present disclosure, the blocking strips 42 of the outer cover 40 surrounding the centrifugal atomization disc 10 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 injured due to the rupture of the centrifugal atomization disc 10, and can solve the problems caused by the direct exposure of the centrifugal atomization disc 10.

[0149] In the optional embodiment, the mounting ring 41 of the outer cover 40 is sleeved on the outside of the flow guide device 20, and compared with the mounting ring 41 of the outer cover 40 mounted on the driving device 30, the blocking strips can be closer to the centrifugal atomization disc 10.

[0150] The inventor finds that for the centrifugal atomization device mounted on the unmanned vehicle, the centrifugal atomization device generally sprays liquid medicine to the crops from the crop side (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 plane (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 plane (for example, when spraying upward to the left or downward to the left). In this way, the blocking strips 42 are mostly parallel to the ground plane or within a certain angle with the ground plane, and at this time, a certain amount of liquid droplets may be accumulated on the blocking strips 42 to form a sediment. The liquid droplets accumulated in the sediment on the blocking strips 42 may cause one or more of the following problems:

[0151] First, the liquid droplets in the sediment on the blocking strips 42 are seen by the user, which makes the user feel that the liquid droplets are not blown out for spraying, and the liquid droplets are wasted, which affects the user experience; second, the liquid droplets on the blocking strips may be sucked back, and the liquid droplets sucked back pollute the air deflector 50, the centrifugal atomization device, the fan, and the like, which causes waste, pollution, and affects the user's visual experience.

[0152] In order to improve, reduce the accumulation of liquid droplets on the baffle 42 of the outer cover 40, in an optional embodiment, the centrifugal atomization device is configured to rotate the outer cover 40. Exemplarily, 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 (such as the motor seat) of the driving device 30. The plurality of baffles 42 of the outer cover 40 surrounding the outside of the centrifugal atomization disc 10 not only have a protective effect, but also can reduce the speed of the mist droplets, make the mist droplets more easily controlled by the wind field, reduce the power requirement of the fan, and make the mist field more stable. Moreover, the baffle 42 can also play a role in re-dispersing and atomizing the mist droplets, and the atomized particles are finer.

[0153] In an optional embodiment, an annular connecting track is arranged outside the flow guide device 20, and the mounting ring 41 of the outer cover 40 is rotatably mounted on the connecting track.

[0154] In an optional embodiment, the outer cover 40 is rotatably connected with the device body through the mounting ring 41, and on this basis, the outer cover 40 in the centrifugal atomization device and the air-laid centrifugal atomization equipment 100 is configured as follows: when 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 in a first direction to spray the atomized liquid droplets outward, and the outer cover 40 rotates in a 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 outer cover 40 and the centrifugal atomization disc 10 rotate in opposite directions, and when the liquid droplets thrown by the centrifugal atomization disc 10 hit the baffle 42, the baffle 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 easily separated from the baffle 42.

[0155] In the working state of the centrifugal atomization spraying device, when the outer cover 40 rotates reversely relative to the centrifugal atomization disc 10 (for example, the outer cover 40 rotates reversely at a lower speed), at least one of the following effects can be brought about: first, because the outer cover 40 rotates reversely, the barrier strip 42 has a movement trend opposite to the liquid droplets, the liquid droplets are more likely to leave the barrier strip 42, and large liquid droplets are less likely to be formed on the barrier strip 42. Second, taking the case where the centrifugal atomization disc 10 rotates clockwise and the outer cover 40 rotates counterclockwise as an example, the movement trend of the liquid droplets sprayed by the centrifugal atomization disc 10 is opposite to the rotation trend of the outer cover 40, and the liquid droplets in the air are less likely to settle on the barrier strip 42. In this way, the liquid settled on the barrier strip 42 can be reduced, thereby improving the user experience and avoiding the subsequent dripping of the liquid droplets settled on the barrier strip 42 from polluting other areas. Third, the barrier strip 42 of the reversely rotating outer cover 40 can reduce the speed of the liquid droplets sprayed by the centrifugal atomization disc, so that the liquid droplets can be more easily controlled by the air field blown by the fan, so that the atomized liquid droplets can be stably blown to the target area by the fan, and the mist field is more stable. Fourth, the barrier strip 42 of the reversely rotating outer cover 40 can better disperse the liquid droplets and better achieve the effect of secondary atomization of the liquid droplets.

[0156] In an optional embodiment, in the working state of the centrifugal atomization device, the outer cover 40 rotates reversely relative to the centrifugal atomization disc 10, and the rotation speed of the outer cover 40 is lower than that of the centrifugal atomization disc 10.

[0157] In the case of the outer cover 40 being rotatable, the rotation of the outer cover 40 is driven by the driving device 30, and 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 air blown by the fan, and 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 sprayed by the centrifugal atomization disc 10.

[0158] In an optional embodiment, the barrier strip 42 comprises a strip main body part and an extended end part connected to the front side of the strip main body part, the strip main body part is located outside the area where the atomization flow channel 101 is located, and the extended end part protrudes forward relative to the area where the atomization flow channel 101 is located.

[0159] The at least one circle of barrier strips 42 surrounding the outer periphery of the centrifugal atomization disc 10 in the outer cover 40 of the present disclosure not only plays a protection role, but also plays a role of re-atomizing the mist droplets, making the mist droplets smaller and more uniform, and achieving a better atomization effect. In addition, the cooperation of the strip main body part and the extended end part of the barrier strip 42 can ensure the effect of re-atomizing the mist droplets.

[0160] The present disclosure also provides a wind guide cover 50, which can be applied to the air-blast centrifugal atomization device 100 in any of the foregoing embodiments. The wind guide cover 50 comprises a wind guide shell 51, and a first wind guide sheet 521 and a second wind guide sheet 522 arranged in the wind guide shell 51.

[0161] The first wind guide sheet 521 and the wind guide shell 51 define a first expansion air channel 501, and the second wind guide sheet 522 and the wind guide shell 51 define a second expansion air channel 502; the first expansion air channel 501 and the second expansion air channel 502 are both configured to communicate with the rear side opening 5101 at one end and communicate with the front side opening 5102 at the other end, and extend away from the central axis of the wind guide shell 51 from the end close to the rear side opening 5101 to the end close to the front side opening 5102.

[0162] The provision of the wind guide cover 50 is conducive to the air-blast centrifugal atomization device 100 to obtain a larger spray coverage, and the distance between the upper and lower edges of the spray coverage is greater than the distance between the left and right edges of the spray coverage.

[0163] It can be understood that the structure of the wind guide cover 50 can be the same as that of any wind guide cover 50 in the air-blast centrifugal atomization device 100.

[0164] In an optional embodiment, referring to FIG. 17, the wind guide cover 50 of the present disclosure is additionally provided with a wind gathering sheet 53 for guiding part of the airflow to the central region of the wind guide shell 51 to improve the air pressure condition of the central region of the wind guide shell 51. The wind gathering sheet 53 is arranged inside the wind guide shell 51 and extends towards the first axis from the end close to the front side opening 5102 to the end away from the front side opening 5102. The wind gathering sheet 53 extends towards the first axis from the end close to the rear side opening 5101 to the end close to the front side opening 5102. The wind guide shell 51 is provided with a first axis extending in the front-rear direction, and the region on the side of the wind guide sheet 52 close to the first axis is the inner side region of the tongue, and the wind gathering sheet 53 is used to guide part of the airflow to the inner side region of the tongue. Optionally, the first axis is the central axis.

[0165] In general, the wind guide sheet 52 expands outward from back to front, and the wind gathering sheet 53 converges inward from back to front. The wind gathering sheet 53 is used to guide part of the airflow towards the first axis, thereby supplementing a certain airflow to the middle region and improving the condition of liquid droplets being sucked back. In actual working scene experiments, basically no liquid droplets are sucked back.

[0166] In an optional embodiment, the inside of the air guide shell 51 is provided with two air gathering fins 53. For the sake of distinction, the two air gathering fins 53 are referred to as a first air gathering fin 531 and a second air gathering fin 532. The first air guide fin 521 and the second air guide fin 522 are arranged in the left-right direction, and the first air gathering fin 531 and the second air gathering fin 532 are arranged in the up-down direction. Compared with arranging the air gathering fin 53 only on the left side or the right side, the present embodiment arranges the first air gathering fin 531 and the second air gathering fin 532 in the left-right direction, so that the air flow can be guided forward to the middle from both left and right sides by the two air gathering fins 53, the air gathering effect is balanced, and the situation of liquid droplets being sucked back in the left and right areas inside the air guide shell 51 can be well avoided or reduced. Moreover, by gathering air from both left and right sides, the air gathering fin 53 does not need to be greatly inclined inward from back to front, but can be inclined inward by a small angle to achieve the improvement effect, so that most of the air flow can be diffused outward to achieve the effect of spraying outward diffusion.

[0167] In an optional embodiment, the first air guide fin 521, the first air gathering fin 531, the second air guide fin 522, and the second air gathering fin 532 are sequentially arranged along the direction around the first axis.

[0168] In the case where the seat 54 is arranged, the first air gathering fin 531 is arranged spaced apart from the seat 54, and a third air duct 5031 is formed between the first air gathering fin 531 and the seat 54. The second air gathering fin 532 is arranged spaced apart from the seat 54, and a fourth air duct 5041 is formed between the second air gathering fin 532 and the seat 54. The third air duct 5031 and the fourth air duct 5041 are both arranged to communicate with the rear opening 5101 and the front opening 5102 at both ends. The air flow blown forward in the third air duct 5031 and the fourth air duct 5041 is mainly blown forward under the guide of the inner side surface of the first air gathering fin 531 and the inner side surface of the second air gathering fin 532, and a part of the air flow is blown to the area in front of the seat 54, the first air guide fin 521, and the second air guide fin 522, thereby preventing the liquid droplets in the middle area from being sucked back. It can be understood that the third air duct 5031 and the fourth air duct 5041 also have the effect of blowing the mist droplets forward to the target area.

[0169] It can be understood that if the inner side surface of the first air gathering fin 531 and the inner side surface of the second air gathering fin 532 are sealed, although the air can be gathered to the middle area through the outer side surface of the first air gathering fin 531 and the outer side surface of the second air gathering fin 532, the air flow that can be supplemented to the central area is less, and the improvement effect on the liquid droplet suction is limited, which is not as good as the scheme of arranging the third air duct 5031 on the inner side of the first air gathering fin 531 and the fourth air duct 5041 on the inner side of the second air gathering fin 532.

[0170] In an optional embodiment, the first wind gathering sheet 531 is arranged spaced apart from the air guide shell 51, and the fifth air duct 5032 is formed between the first wind gathering sheet 531 and the air guide shell 51. The second wind gathering sheet 532 is arranged spaced apart from the air guide shell 51, and the sixth air duct 5042 is formed between the second wind gathering sheet 532 and the air guide shell 51. The fifth air duct 5032 and the sixth air duct 5042 are both configured to communicate with the rear side opening 5101 and the front side opening 5102 at two ends respectively.

[0171] Correspondingly, the part of the air guide shell 51 corresponding to the first wind gathering sheet 531 extends from back to front in a direction away from the first axis, and the part of the air guide shell 51 corresponding to the second wind gathering sheet 532 extends from back to front in a direction away from the first axis, so that the fifth air duct 5032 and the sixth air duct 5042 can at least diffuse a certain amplitude from left to right and right to left respectively under the guiding effect of the air guide shell 51 from back to front, so that the left and right sides of the spray spraying area are expanded.

[0172] In an optional embodiment, referring to FIGS. 5 and 6, the air guide cover 50 further includes a first tongue side connecting plate 561, a second tongue side connecting plate 562, a third tongue side connecting plate 563, and a fourth tongue side connecting plate 564. The first air guide sheet 521 has a first side and a second side on two sides in the circumferential direction. The first side is connected to the air guide shell 51 through the first tongue side connecting plate 561, and the second side is connected to the air guide shell 51 through the second tongue side connecting plate 562. The second air guide sheet 522 has a third side and a fourth side on two sides in the circumferential direction. The third side is connected to the air guide shell 51 through the third tongue side connecting plate 563, and the fourth side is connected to the air guide shell 51 through the fourth tongue side connecting plate 564.

[0173] One end of the first wind gathering sheet 531 is connected to the side of the first tongue side connecting plate 561 away from the first expansion air duct 501, and the other end of the second wind gathering sheet 532 is connected to the side of the third tongue side connecting plate 563 away from the second expansion air duct 502. One end of the second wind gathering sheet 532 is connected to the side of the second tongue side connecting plate 562 away from the first expansion air duct 501, and the other end of the second wind gathering sheet 532 is connected to the side of the fourth tongue side connecting plate 564 away from the second expansion air duct 502.

[0174] The first, the first and second wind guide vanes 521 and 522 are connected to the wind guide shell 51 on both sides, which strengthens the structural strength of the wind guide shell 51 and the wind guide vanes 52, so that the shape of the expansion air duct is stable during the driving of the plant protection vehicle 200, a relatively stable wind field and fog field are provided, and the spraying effect on the target area is good. The second, the two tongue side connecting plates fix the two ends of the first wind converging plate 531, and the other two tongue side connecting plates fix the two ends of the second wind converging plate 532, so that the wind converging plate 53 is spaced apart from the seat portion 54 to form the third air duct 5031 and the fourth air duct 5041, and the wind converging plate 53 is spaced apart from the seat portion 54 to form the fifth air duct 5032 and the sixth air duct 5042. The third is conducive to forming the first expansion air duct 501 and the second expansion air duct 502. The fourth, the first tongue side connecting plate 561, the second tongue side connecting plate 562, the third side tongue side connecting plate, and the fourth tongue side connecting plate 564 can be provided with a semi-hole type mounting hole by bending deformation, so as to provide a fastener locking position, and the wind guide cover 50 is conveniently installed on the shell of the air supply device.

[0175] In an optional embodiment, referring to FIG. 18, a rear shell 61 is further included, which can provide a fan mounting position. The rear shell 61 is penetrated at both ends in the axial direction, and is connected to one end of the wind guide shell 51 provided with the rear opening 5101. The wind guide shell 51 and / or the rear shell 61 are provided with a lateral opening 70, which is located at the rear side of the wind converging plate 53 in the axial direction. The lateral opening 70 is used as a gas supplement port, so that the gas outside the wind guide shell 51 can enter the inside of the wind guide shell 51 from the lateral opening 70 and be supplemented to the area in front of the wind converging plate 53 under the guidance of the inner side surface of the wind converging plate 53, so as to improve the negative pressure condition in front and make the liquid droplets less likely to be sucked back.

[0176] When the air flow blown forward by the fan passes the lateral opening 70, the space outside the space can enter the inside under the action of negative pressure due to the low air pressure and fast flow speed, so as to supplement the amount of gas and improve the negative pressure condition in front.

[0177] In an optional embodiment, the lateral opening 70 is used to guide the external gas to enter the inside of the wind guide shell 51 in a manner of flowing from back to front, so that the air supplemented by the lateral opening 70 can have a tendency to flow forward and reach the inner side of the wind converging plate 53, so as to achieve the wind converging effect.

[0178] In an optional embodiment, in order to provide the substantially forward lateral opening 70, the rear shell 61 is inwardly staggered relative to the air guide shell 51 in a manner that the lateral opening 70 is formed between the rear side of the rear shell 61 and the rear side of the air guide shell 51, on the basis of which the outer wall of the rear shell 61 also plays a guiding role, and the gas can more smoothly supplement into the air guide sheet 53 forwardly through the lateral opening 70. One configuration of the lateral opening 70 is that the rear side opening 5101 of the air guide shell 51 includes a first rear side opening segment and a second rear side opening segment; a portion of the rear shell 61 is connected with the first rear side opening segment, and a portion of the rear shell 61 is concave relative to the second opening segment in a direction close to the first axis, and the lateral opening 70 is formed between the rear shell 61 and the second opening segment.

[0179] In an optional embodiment, in the case that the rear shell 61 and / or the air guide shell 51 is provided with the lateral opening 70, referring to FIG. 18, the lateral opening 70 includes a first side opening 71 and a second side opening 72, the first side opening 71 is located corresponding to the third air duct 5031, and the second side opening 72 is located corresponding to the fourth air duct 5041, so that the gas supplemented from the two lateral openings 70 can be directly supplemented into the third air duct 5031 and the fourth air duct 5041, respectively. In an optional embodiment, the first air guide sheet 531 and the second air guide sheet 532 are arranged along the left-right direction, and the first side opening 71 and the second side opening 72 are arranged along the left-right direction.

[0180] In an optional embodiment, the air delivery centrifugal atomization device is installed on the plant protection vehicle 200 through the mounting seat 80.

[0181] 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 device or element 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 the description, and have no special meaning.

[0182] 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 connection 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.

[0183] 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.

[0184] The technical principles of the present disclosure are described above in combination 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 can think of other specific embodiments of the present disclosure without creative labor, and these ways will fall within the scope of protection of the present disclosure. Industrial applicability

[0185] The air-borne centrifugal atomization device of the present disclosure realizes the atomization of liquid by centrifugal throwing through the centrifugal atomization device, the uniformity of the particle size of the formed mist droplets is higher, the atomization effect is better, and it is beneficial to improve the spraying effect. In addition, it can also reduce the waste of liquid medicine and reduce the pollution to the environment, which meets the requirements of green technology for efficient use of resources in many agricultural countries.

Claims

1. An air-blast centrifugal atomizing apparatus characterized by, The air guide cover (50), the centrifugal atomization device and the air supply device (60) are included. The air guide cover (50) is provided with a rear opening (5101) and a front opening (5102) at two ends respectively, and the end provided with the rear opening (5101) is connected with the air supply device (60); the centrifugal atomization device is used for spraying mist to the outer periphery, and is located in front of the air supply device (60); the air supply device (60) is used for blowing air flow to the front opening (5102) of the air guide cover (50) to blow the mist sprayed by the centrifugal atomization device forward. The air guide cover (50) includes an air guide shell (51) and at least two air guide pieces, the rear opening (5101) is arranged at the rear end of the air guide shell (51), and the front opening (5102) is arranged at the front end of the air guide shell (51). The inner diameter of the air guide shell (51) gradually expands from the rear end to the front end, and the at least two air guide pieces are respectively located on the upper and lower sides of the centrifugal atomization device and form an expanding air channel with the inner wall of the air guide shell (51) to guide part of the air flow to the upper and lower directions to diffuse.

2. The airblast centrifugal atomization apparatus of claim 1, wherein, The air guide cover (50) is configured to diffuse the mist sprayed by the air supply centrifugal atomization device in the upper and lower directions under the action of the air flow, and the diffusion amplitude in the upper and lower directions is greater than the diffusion amplitude in the horizontal direction.

3. The air-blast centrifugal atomizer according to claim 1 or 2, characterized in that The included angle between the upper and lower inner wall surfaces of the front end of the air guide shell (51) and the horizontal plane is not zero.

4. The air-blast centrifugal atomizer of claim 3, wherein The upper and lower dimensions of the front opening (5102) are greater than the left and right dimensions of the front opening (5102).

5. The air-blast centrifugal atomizer according to any one of claims 1 to 4, characterized in that The air guide cover (50) further includes a first air guide piece (521) and a second air guide piece (522) arranged inside the air guide shell (51), and the first air guide piece (521) and the second air guide piece (522) are arranged in the upper and lower directions. The first air guide piece (521) and the second air guide piece (522) are configured to extend away from the central axis of the air guide shell (51) from one end close to the rear opening (5101) to one end close to the front opening (5102). The side of the first air guide piece (521) away from the second air guide piece (522) is a first tongue outer side surface, and the first tongue outer side surface and the inner side surface of the air guide shell (51) define a first expanding air channel (501); the side of the second air guide piece (522) away from the first air guide piece (521) is a second tongue outer side surface, and the second tongue outer side surface and the inner side surface of the air guide shell (51) define a second expanding air channel (502).

6. The air-blast centrifugal atomizer of claim 5, wherein The air guide shell (51) includes a first tongue-shaped plate part (511) and a second tongue-shaped plate part (512). The first tongue-shaped plate part (511) is located on the side of the first air deflector (521) away from the second air deflector (522), and the first widened air channel (501) is formed between the first tongue-shaped plate part (511) and the first air deflector (521); the second tongue-shaped plate part (512) is located on the side of the second air deflector (522) away from the first air deflector (521), and the second widened air channel (502) is formed between the second tongue-shaped plate part (512) and the second air deflector (522); The first tongue-shaped plate part (511) and the second tongue-shaped plate part (512) are both configured to extend away from the central axis of the air deflector shell (51) from one end close to the back side opening (5101) to one end close to the front side opening (5102).

7. The air-blast centrifugal atomizer of claim 5, wherein The left side of the first air deflector (521) and the left side of the second air deflector (522) are spaced apart from each other, and a first blowing air channel (503) is formed between the inner side of the air deflector shell (51), the left side of the first air deflector (521), and the left side of the second air deflector (522). The right side of the first air deflector (521) and the right side of the second air deflector (522) are spaced apart from each other, and a second blowing air channel (504) is formed between the inner side of the air deflector shell (51), the right side of the first air deflector (521), and the left side of the second air deflector (522).

8. The air-blast centrifugal atomizer of claim 7, wherein, The front side opening (5102) includes an upper edge (5103) and a lower edge (5104) on the upper and lower sides of the air deflector cover (50), and a left edge (5106) and a right edge (5107) on the left and right sides of the air deflector cover (50); The left edge (5106) and the right edge (5107) are circular arc edges, and / or the upper edge (5103) and the lower edge (5104) are straight edges.

9. The airblast centrifugal atomizer of claim 5 wherein, The seat part (54) is arranged inside the air deflector shell (51); The first air deflector (521) and the second air deflector (522) are connected to the seat part (54); and / or the air deflector shell (51) is connected to the seat part (54).

10. The airblast centrifugal atomizer of claim 9, wherein, The centrifugal atomizing device is arranged on the side of the seat part (54) away from the air supply device (60), and the centrifugal atomizing device is connected to the seat part (54).

11. The airblast centrifugal atomizer of claim 9, wherein, The first air guide fin (521) and the second air guide fin (522) are connected to the seat (54) near one end of the rear opening (5101); and / or, the faces of the first air guide fin (521) and the second air guide fin (522) near one side of the central axis of the air guide cover (50) are connected to the seat (54) through first connecting parts (551); and / or, the faces of the first air guide fin (521) and the second air guide fin (522) away from one side of the central axis of the air guide cover (50) are connected to the air guide shell (51) through second connecting parts (552); and / or, the left and right sides of the first air guide fin (521) and the left and right sides of the second air guide fin (522) are connected to the air guide shell (51) through third connecting parts.

12. The airblast centrifugal atomization apparatus of any one of claims 1-11, wherein, The centrifugal atomization device comprises a device main body and a centrifugal atomization disc (10), the device main body is connected to the air guide cover (50) or the air supply device (60); The device main body comprises a driving device (30) and a flow guide device (20) connected to each other, the flow guide device (20) is used for conveying liquid to the centrifugal atomization disc (10), the driving device (30) is connected to the centrifugal atomization disc (10), and the driving device (30) is used for driving the centrifugal atomization disc (10) to rotate.

13. The airblast centrifugal atomization apparatus of claim 12, wherein, The centrifugal atomization disc (10) is located outside the air guide cover (50), and the centrifugal atomization disc (10) is located on the side of the air guide cover (50) away from the air supply device (60).

14. The airblast centrifugal atomization apparatus of claim 12, wherein, The centrifugal atomization device further comprises an outer cover (40), the outer cover (40) comprises a mounting ring (41) and a plurality of barrier strips (42), the mounting ring (41) is connected to the device main body, and the plurality of barrier strips (42) are arranged around the outer periphery of the centrifugal atomization disc (10) and are spaced apart between adjacent barrier strips (42).

15. A wind deflector, characterized by, Suitable for being applied to the air supply centrifugal atomization device as claimed in any one of claims 1-14; The air guide cover (50) comprises an air guide shell (51), a first air guide fin (521) and a second air guide fin (522); the air guide shell (51) is provided with a rear opening (5101) and a front opening (5102) at two ends in the axial direction, respectively; the first air guide fin (521) and the second air guide fin (522) are arranged inside the air guide shell (51) and are arranged in the up-down direction; The first air guide fin (521) and the air guide shell (51) define a first widened air channel (501), and the second air guide fin (522) and the air guide shell (51) define a second widened air channel (502); the first widened air channel (501) and the second widened air channel (502) are both configured to communicate with the rear opening (5101) at one end, communicate with the front opening (5102) at the other end, and extend away from the central axis of the air guide shell (51) from the one end near the rear opening (5101) to the one end near the front opening (5102).

16. The wind deflector of claim 15, wherein, The air deflector further comprises a wind gathering sheet (53) arranged inside the air deflector shell (51), the wind gathering sheet (53) extends from one end close to the rear opening (5101) to one end close to the front opening (5102) to a direction close to a first axis extending in the front-rear direction of the air deflector shell (51) for guiding part of the airflow to the first axis.

17. The wind cone of claim 16, wherein, The wind gathering sheet (53) has at least two pieces, wherein the two pieces of the wind gathering sheet (53) are a first wind gathering sheet (531) and a second wind gathering sheet (532), the first wind gathering sheet (531) and the second wind gathering sheet (532) are arranged along the left-right direction of the air deflector (50).

18. The wind deflector of claim 17, wherein, The air deflector further comprises a seat portion (54) arranged inside the air deflector shell (51), the first axis passes through the seat portion (54); The first air deflector sheet (521) and the second air deflector sheet (522) are respectively connected with the seat portion (54); The first wind gathering sheet (531) is arranged apart from the seat portion (54), a third air duct (5031) is formed between the first wind gathering sheet (531) and the seat portion (54), the second wind gathering sheet (532) is arranged apart from the seat portion (54), a fourth air duct (5041) is formed between the second wind gathering sheet (532) and the seat portion (54); the third air duct (5031) and the fourth air duct (5041) are both configured to communicate at both ends with the rear opening (5101) and the front opening (5102) respectively.

19. The wind deflector of claim 17, wherein, The first wind gathering sheet (531) is arranged apart from the air deflector shell (51), a fifth air duct (5032) is formed between the first wind gathering sheet (531) and the air deflector shell (51), the second wind gathering sheet (532) is arranged apart from the air deflector shell (51), a sixth air duct (5042) is formed between the second wind gathering sheet (532) and the air deflector shell (51); the fifth air duct (5032) and the sixth air duct (5042) are both configured to communicate at both ends with the rear opening (5101) and the front opening (5102) respectively.

20. The wind deflector of claim 17, wherein, The air deflector further comprises a first tongue side connecting plate (561), a second tongue side connecting plate (562), a third tongue side connecting plate (563), and a fourth tongue side connecting plate (564); The first air deflector sheet (521) has a first side portion and a second side portion on both sides in the circumferential direction, the first side portion is connected with the air deflector shell (51) through the first tongue side connecting plate (561), and the second side portion is connected with the air deflector shell (51) through the second tongue side connecting plate (562); The second air deflector sheet (522) has a third side portion and a fourth side portion on both sides in the circumferential direction, the third side portion is connected with the air deflector shell (51) through the third tongue side connecting plate (563), and the fourth side portion is connected with the air deflector shell (51) through the fourth tongue side connecting plate (564); One end of the first wind collecting sheet (531) is connected to one side of the first lingual connecting plate (561) away from the first flared air duct (501), and the other end of the second wind collecting sheet (532) is connected to one side of the third lingual connecting plate (563) away from the second flared air duct (502); One end of the second wind collecting sheet (532) is connected to one side of the second lingual connecting plate (562) away from the first flared air duct (501), and the other end of the second wind collecting sheet (532) is connected to one side of the fourth lingual connecting plate (564) away from the second flared air duct (502).

21. A wind scoop according to any one of claims 16-20, characterised in that The wind scooper further comprises a rear shell (61), both ends of the rear shell (61) in the axial direction are through, and the rear shell (61) is connected to one end of the wind scooper shell (51) provided with the rear opening (5101). The wind scooper shell (51) and / or the rear shell (61) is provided with a lateral opening (70), and in the axial direction, the lateral opening (70) is located at the rear side of the wind collecting sheet (53).

22. A wind scoop according to any one of claims 15 to 21, wherein, The rear opening (5101) of the wind scooper shell (51) comprises a first rear opening edge section and a second rear opening edge section. One part of the rear shell (61) is connected to the first rear opening edge section, and one part of the rear shell (61) is concave relative to the second opening edge section in the direction close to the first axis, and the lateral opening (70) is formed between the rear shell (61) and the second opening edge section.

23. The wind cone of claim 21, wherein, The lateral opening (70) comprises a first lateral opening (71) and a second lateral opening (72), and the first lateral opening (71) and the second lateral opening (72) are arranged in the left-right direction.

24. An agricultural protection vehicle (200), characterized in that, Comprise: A vehicle body; The air-blast centrifugal atomizing device (100) according to any one of claims 1-14 is installed on the vehicle body.

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