CN113197185A - Unmanned aerial vehicle powder applying operation airborne device and spraying method - Google Patents
Unmanned aerial vehicle powder applying operation airborne device and spraying method Download PDFInfo
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- CN113197185A CN113197185A CN202110439221.9A CN202110439221A CN113197185A CN 113197185 A CN113197185 A CN 113197185A CN 202110439221 A CN202110439221 A CN 202110439221A CN 113197185 A CN113197185 A CN 113197185A
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- 239000000843 powder Substances 0.000 title claims abstract description 225
- 238000005507 spraying Methods 0.000 title claims abstract description 47
- 238000003860 storage Methods 0.000 claims abstract description 40
- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 21
- 238000005243 fluidization Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 239000000575 pesticide Substances 0.000 description 4
- 238000010410 dusting Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 241000607479 Yersinia pestis Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 241000221785 Erysiphales Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M9/00—Special adaptations or arrangements of powder-spraying apparatus for purposes covered by this subclass
- A01M9/0007—Pneumatic dusters
- A01M9/003—Pneumatic field dusters, e.g. self-propelled, drawn or tractor-mounted
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M9/00—Special adaptations or arrangements of powder-spraying apparatus for purposes covered by this subclass
- A01M9/0084—Undercarriages, frames, couplings, tanks
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M9/00—Special adaptations or arrangements of powder-spraying apparatus for purposes covered by this subclass
- A01M9/0092—Regulating or controlling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/16—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting
- B64D1/18—Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting by spraying, e.g. insecticides
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Insects & Arthropods (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses an airborne device and a spraying method suitable for an unmanned aerial vehicle powder spraying operation, the device comprises an airborne powder spraying device arranged outside the unmanned aerial vehicle, the airborne powder spraying device comprises a mixed flow fan, a mixed flow fan shell, a pressurizing powder feeding channel, a powder storage hopper, a fluidization structure, two powder outlets, a connecting frame and two communication modules, the mixed flow fan is arranged below the unmanned aerial vehicle, the mixed flow fan is connected with the unmanned aerial vehicle through the connecting frame, the pressurizing powder feeding channel is directly connected with the mixed flow fan, the two powder outlets are connected to the tail end of the pressurizing powder feeding channel in a forked mode, the forked angle alpha is 90-160 degrees, the two communication modules are respectively fixed on the mixed flow fan shell and the outer wall of the powder storage hopper, the connecting frame is used for fixing the airborne powder spraying device, and the upper end of the connecting frame is fixed at the bottom of the unmanned aerial vehicle. This be applicable to unmanned aerial vehicle spraying powder operation machine carries device, has improved the operating efficiency that unmanned aerial vehicle used the powder.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to an airborne device for powder applying operation of an unmanned aerial vehicle and a spraying method.
Background
The use of unmanned aerial vehicles to control plant diseases and insect pests is a popular technical means in the field of current plant protection. However, most unmanned aerial vehicles for plant protection and pesticide application at the present stage are developed for liquid medicaments, and the field of unmanned aerial vehicles for powder spraying has a huge blank. Compared with liquid medicaments, powder is more easily disturbed by airflow in the air and is more difficult to act on target crops. However, the powder is difficult to be replaced well in some special pests and diseases, and the effect of pesticide application is difficult to achieve by using ground machinery. For example, the sulfur powder has better control effect on the powdery mildew of oak.
The unmanned aerial vehicle powder spraying device at the present stage has the following problems: the structure is complex, the installation is difficult, and the powder output is small and uneven; meanwhile, pollution to non-target crops is not considered during powder application operation, so that powder waste is caused; when the device is large in size and high in weight, the unmanned aerial vehicle is short in endurance and difficult to work for a long time.
Disclosure of Invention
The invention provides an unmanned aerial vehicle powder applying operation airborne device and a spraying method aiming at the technical problems in the prior art, and solves the problems of complex structure, difficult installation, small and uneven powder output and low efficiency.
The technical scheme for solving the technical problems is as follows: the utility model provides a be applicable to unmanned aerial vehicle spraying powder operation machine carries device, is including installing the machine-carried device of dusting at the unmanned aerial vehicle outside, and machine-carried device of dusting includes mixed flow fan, mixed flow fan shell, pressurization powder feeding channel, stores up powder fill, fluidized structure, two meal outlet, link and two communication module, the mixed flow fan is installed in the unmanned aerial vehicle below, the mixed flow fan passes through the link and links to each other with unmanned aerial vehicle, pressurization powder feeding channel and mixed flow fan directly link to each other, two meal outlet is forked type and connects at pressurization powder feeding channel end, and branching angle alpha is 90-160, two communication module is fixed in mixed flow fan shell respectively and stores up on the powder fill outer wall, the link is used for fixed machine-carried device of dusting, the upper end of link is fixed in unmanned aerial vehicle bottom, the lower extreme and the mixed flow fan shell welding of link.
The fluidization structure comprises a screw rod, fan blades and a motor, and the screw rod and the fan blades are driven to rotate through the motor.
The powder storage hopper comprises a powder discharging channel, the upper end of the powder discharging channel is positioned at the bottom of the powder storage hopper, the powder discharging channel is vertically inserted into the pressurizing powder feeding channel, and the fluidizing structure is arranged at the joint of the powder discharging channel and the powder storage hopper.
Further, the mixed flow fan comprises blades, guide vanes and a driving motor.
The blades are welded on the conical impeller of the guide vane; the blade design conforms to a meridian acceleration method and a quasi-ternary flow law.
The guide vane is fixed in the mixed flow fan shell.
The driving motor drives the blades to rotate; the driving motor is connected with the power supply of the unmanned aerial vehicle through a lead; the driving motor is connected with the communication module through a lead.
Further, the pressurizing powder feeding channel is directly connected with the mixed flow fan shell, the radius of the pressurizing powder feeding channel is smaller than that of the mixed flow fan shell, and the chamfer angle theta of the pressurizing powder feeding channel is 45-60 degrees.
Further, the powder storage hopper is in a funnel shape, the upper half part of the powder storage hopper is square, the lower half part of the powder storage hopper is in a conical shape, and the bottom of the powder storage hopper is directly communicated with the powder discharging channel.
Further, the motor is connected with a power supply of the unmanned aerial vehicle through a lead; the motor passes through the lead wire and links to each other with unmanned aerial vehicle communication module.
Further, go out the powder mouth end in unmanned aerial vehicle rotor below.
Further, communication module passes through wireless signal transmission ground instruction, two communication module can control respectively the rotational speed of driving motor, and then changes amount of wind, wind pressure, the control volume of powder down.
Furthermore, the mixed flow fan shell, the powder storage hopper, the powder discharging channel, the pressurizing powder feeding channel and the powder outlet are processed in a 3D printing mode and made of carbon fibers.
A spraying method suitable for an airborne device of an unmanned aerial vehicle spraying powder operation comprises the following steps:
firstly, mounting an onboard powder spraying device on an operating unmanned aerial vehicle, and adding sufficient powder into a powder storage hopper;
the powder storage hopper is designed into a hopper with a smooth inner wall, powder can easily fall into the powder discharging channel by means of self gravity, the powder discharging speed is regulated and controlled by the rotating speed of the screw rod, fine powder particles are easy to agglomerate, and the fan blades break agglomerated powder by rotating;
store up powder fill and not design vibrator, unmanned aerial vehicle can produce certain shake at flight in-process self, also can drop easily down to the powder passageway at the powder of storing up powder fill edge, compare with prior art and reduced certain cost, simplified the structure, reduced the unmanned aerial vehicle load.
Secondly, controlling the unmanned aerial vehicle to take off, and turning on the mixed flow fan and the driving motor when the unmanned aerial vehicle arrives at the target crop to ensure that the powder falls into the pressurized powder feeding channel gradually under the driving of the fluidized structure;
the blade design of the mixed flow fan accords with a meridian acceleration method and a quasi-ternary flow rule, the driving motor drives the blades to rotate to generate oblique air flow, and compared with other fans, the mixed flow fan has the characteristics of high air pressure and high ventilation quantity.
Thirdly, the mixed flow fan starts to rotate to generate strong airflow, and the airflow strengthens the air pressure through the cavity of the pressurizing powder feeding channel and acts on the powder particles;
the air current that is produced by the blade rotation is cut when passing through the water conservancy diversion leaf, makes the air current become more even, stable, and when the air current reachd the pressurization and send the powder passageway, the chamfer structure has further increased the wind pressure, and overall structure can make the powder granule receive more even, stable, powerful air current effect.
Fourthly, the powder particles reach the powder outlet under the pushing of the airflow, and the powder particles are acted on the target crops at the powder outlet by the pressing wind field of the rotor wing of the unmanned aerial vehicle and the wind field of the airborne powder spraying device;
the powder particles are easily disturbed by airflow in the air, so when the device is used for powder spraying operation, the operation is carried out in the early morning, evening or in the weather with stable airflow, and the device can regulate and control the powder spraying amount and the spraying range of the airborne powder spraying device in unit time by changing the rotating speed of the mixed flow fan and the fluidized structure according to the difference of target crops and action areas;
mixed flow fan shell, storage powder fill, lower powder passageway, pressurization send powder passageway and powder outlet in this device all adopt carbon fiber material, accord with the operation requirement under the different work condition, have reduced unmanned aerial vehicle self load by a wide margin.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
1. the mechanical structures such as the mixed flow fan and the pressurizing powder feeding channel are adopted, so that the airflow for pushing the powder is more uniform, stable and powerful, the powder particles have more kinetic energy, and a good pesticide application effect is achieved.
2. Compared with the prior art, the unmanned aerial vehicle has the advantages of simple structure and convenience in operation, reduces unnecessary structures, reduces the self load of the unmanned aerial vehicle, and enables the unmanned aerial vehicle to have longer cruising ability.
3. The invention uses the fluidization structure, can freely regulate and control the falling speed of the powder, further controls the powder yield, and is suitable for various different operation requirements.
4. According to the invention, the powder outlet is arranged below the rotor wing of the unmanned aerial vehicle, and the downward pressing wind field brought by the rotor wing of the unmanned aerial vehicle can be utilized to enable powder particles to reach target crops more quickly, so that the drift phenomenon of powder is reduced.
Drawings
FIG. 1 is an assembly view of the present invention;
FIG. 2 is a schematic view of the powder storage hopper according to the present invention;
FIG. 3 is a schematic structural view of a fluidization structure of the present invention;
FIG. 4 is a schematic view of the connection between the casing of the mixed flow fan and the pressurized powder feeding channel;
fig. 5 is a schematic structural diagram of the mixed flow fan of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the powder feeding device comprises a mixed flow fan, 2, a mixed flow fan shell, 3, a pressurizing powder feeding channel, 4, a powder storage hopper, 401, a powder discharging channel, 5, a fluidization structure, 502, a screw rod, 501, fan blades, 503, a motor, 6, a powder outlet, 7, a connecting frame, 8 and a communication module.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-5, the airborne device suitable for spraying powder to an unmanned aerial vehicle in the present embodiment includes an airborne powder spraying device installed outside the unmanned aerial vehicle, the airborne powder spraying device includes a mixed flow fan 1, a mixed flow fan housing 2, a pressurized powder feeding channel 3, a powder storage hopper 4, a fluidized structure 5, two powder outlets 6, a connecting frame 7 and two communication modules 8, the mixed flow fan 1 is installed below the unmanned aerial vehicle, the mixed flow fan 1 is connected to the unmanned aerial vehicle through the connecting frame 7, the pressurized powder feeding channel 3 is directly connected to the mixed flow fan 1, the two powder outlets 6 are connected to the end of the pressurized powder feeding channel 3 in a bifurcated shape, the bifurcation angle α is 90-160 °, the two communication modules 8 are respectively fixed to the outer walls of the mixed flow fan housing 2 and the powder storage hopper 4, the connecting frame 7 is used for fixing the airborne powder spraying device, the upper end of the connecting frame 7 is fixed to the bottom of the unmanned aerial, the lower end of the connecting frame 7 is welded with the mixed flow fan shell 2.
When the wireless data module is used, the connection is simple and only needs direct connection, the transmission distance is ideal, and generally the transmission distance can reach more than 600 meters.
The fluidization structure 5 includes a screw rod 502, fan blades 501 and a motor 503, and the screw rod 502 and the fan blades 501 are driven to rotate by the motor 503.
The powder storage hopper 4 comprises a powder discharge channel 401, the upper end of the powder discharge channel 401 is positioned at the bottom of the powder storage hopper 4, the powder discharge channel 401 is vertically inserted into the pressurizing powder feeding channel 3, and the fluidizing structure 5 is arranged at the joint of the powder discharge channel 401 and the powder storage hopper 4.
Further, the mixed flow fan 1 includes a blade 101, a guide vane 102, and a driving motor 103.
The vanes 101 are welded on a conical impeller of the guide vane 102; the design of the vanes 101 conforms to the meridional acceleration method and the "quasi-ternary" flow law.
The guide vane 102 remains fixed within the mixed flow fan housing 2.
The driving motor 103 drives the blade 101 to rotate; the driving motor 103 is connected with the power supply of the unmanned aerial vehicle through a lead; the drive motor 103 is connected to the communication module 8 by a lead wire.
Further, the pressurizing powder feeding channel 3 is directly connected with the mixed flow fan shell 2, the radius of the pressurizing powder feeding channel 3 is smaller than that of the mixed flow fan shell 2, and the chamfer angle theta of the pressurizing powder feeding channel 3 is 45-60 degrees.
Further, the powder storage hopper 4 is in a funnel shape, the upper half part of the powder storage hopper 4 is square, the lower half part of the powder storage hopper 4 is conical, and the bottom of the powder storage hopper 4 is directly communicated with the powder discharge channel 401.
Further, the motor 503 is connected to the power supply of the unmanned aerial vehicle through a lead; the motor 503 is connected with the unmanned aerial vehicle communication module through a lead wire.
Further, go out 6 ends of powder mouth in unmanned aerial vehicle rotor below.
Further, the communication modules 8 transmit ground instructions through wireless signals, and the two communication modules 8 can respectively control the rotating speeds of the driving motor 103 and the motor 503, so that the air volume and the air pressure are changed, and the powder discharge amount is controlled.
Further, the mixed flow fan shell 2, the powder storage hopper 4, the powder discharging channel 401, the pressurizing powder feeding channel 3 and the powder outlet 6 are processed in a 3D printing mode and made of carbon fibers.
A spraying method suitable for an airborne device of an unmanned aerial vehicle spraying powder operation comprises the following steps:
firstly, installing an onboard powder spraying device on an operating unmanned aerial vehicle, and adding sufficient powder into a powder storage hopper 4;
the powder storage hopper 4 is designed into a hopper with a smooth inner wall, powder can easily fall into the powder discharging channel 401 by means of self gravity, the powder discharging speed is regulated and controlled by the rotating speed of the screw rod 502, fine powder particles are easy to agglomerate, and the fan blades 501 break agglomerated powder by rotating;
store up powder fill 4 and not design vibrator, unmanned aerial vehicle can produce certain shake at flight in-process self, also can drop easily in powder passageway 401 storing up 4 marginal powders of powder fill, compare with prior art and reduced certain cost, simplified the structure, reduced the unmanned aerial vehicle load.
Secondly, controlling the unmanned aerial vehicle to take off, and when the unmanned aerial vehicle arrives at the upper part of the target crop, turning on the switches of the mixed flow fan 1 and the driving motor 103, so that the powder gradually falls into the pressurized powder feeding channel 3 under the driving of the fluidized structure 5;
the design of the blade 101 of the mixed flow fan 1 conforms to a meridian acceleration method and a quasi-ternary flow rule, the driving motor 103 drives the blade 101 to rotate to generate oblique air flow, and compared with other fans, the mixed flow fan 1 has the characteristics of high air pressure and high ventilation quantity.
Thirdly, the mixed flow fan 1 starts to rotate to generate strong airflow, and the airflow strengthens the air pressure through the cavity of the pressurizing powder feeding channel 3 and acts on the powder particles;
the airflow generated by the rotation of the blades 101 is cut when passing through the guide vanes 102, so that the airflow becomes more uniform and stable, when the airflow reaches the pressurizing powder feeding channel 3, the air pressure is further increased by the chamfer structure, and the powder particles can be acted by more uniform, stable and powerful airflow through the whole structure.
Fourthly, the powder particles reach the powder outlet 6 under the pushing of the airflow, and the powder particles are acted on the target crops at the powder outlet 6 by the combined action of a wind field under the rotor wing of the unmanned aerial vehicle and a wind field of the airborne powder spraying device;
powder particles are easily disturbed by airflow in the air, so when the device is used for powder spraying operation, the operation is carried out in the early morning, evening or in the weather with stable airflow, and according to the difference of target crops and action areas, the device can regulate and control the powder spraying amount per unit time and the spraying range of the airborne powder spraying device by changing the rotating speed of the mixed flow fan 1 and the fluidized structure 5;
mixed flow fan shell 2, store up powder fill 4, lower powder passageway 401, pressurization send powder passageway 3 and go out powder mouth 6 in this device all adopt carbon fiber material, accord with the operation requirement under the different work condition, have reduced unmanned aerial vehicle self load by a wide margin.
Has the advantages that:
1. the mechanical structures such as the mixed flow fan 1 and the pressurizing powder feeding channel 3 are adopted, so that the airflow for pushing the powder is more uniform, stable and powerful, the powder particles have more kinetic energy, and a good pesticide application effect is achieved.
2. Compared with the prior art, the unmanned aerial vehicle has the advantages of simple structure and convenience in operation, reduces unnecessary structures, reduces the self load of the unmanned aerial vehicle, and enables the unmanned aerial vehicle to have longer cruising ability.
3. The invention uses the fluidization structure 5, can freely regulate and control the falling speed of the powder, further control the powder output, and is suitable for various different operation requirements.
4. According to the invention, the powder outlet 6 is arranged below the rotor wing of the unmanned aerial vehicle, so that powder particles can reach target crops more quickly by utilizing a downward pressing wind field brought by the rotor wing of the unmanned aerial vehicle, and the drift phenomenon of powder is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a be applicable to unmanned aerial vehicle spraying powder operation machine carries device which characterized in that: the airborne powder spraying device comprises an airborne powder spraying device arranged outside an unmanned aerial vehicle, wherein the airborne powder spraying device comprises a mixed flow fan (1), a mixed flow fan shell (2), a pressurizing powder feeding channel (3), a powder storage hopper (4), a fluidizing structure (5), two powder outlets (6), a connecting frame (7) and two communication modules (8);
the mixed flow fan (1) is installed below the unmanned aerial vehicle through a connecting frame (7), the upper end of the connecting frame (7) is fixed at the bottom of the unmanned aerial vehicle, and the lower end of the connecting frame (7) is welded with the mixed flow fan shell (2);
the pressurizing powder feeding channel (3) is directly connected with the mixed flow fan (1), the two powder outlets (6) are connected to the tail end of the pressurizing powder feeding channel (3) in a forked mode, the forked angle alpha ranges from 90 degrees to 160 degrees, and the tail end of each powder outlet (6) is arranged below the rotor wing of the unmanned aerial vehicle;
the fluidization structure (5) comprises a spiral rod (502), fan blades (501) and a motor (503), and the spiral rod (502) and the fan blades (501) are driven to rotate by the motor (503);
the powder storage hopper (4) comprises a powder discharging channel (401), the upper end of the powder discharging channel (401) is positioned at the bottom of the powder storage hopper (4), the lower end of the powder discharging channel (401) is vertically inserted into the pressurizing powder feeding channel (3), and the fluidizing structure (5) is arranged at the connecting part of the powder discharging channel (401) and the powder storage hopper (4);
the two communication modules (8) are respectively fixed on the outer walls of the mixed flow fan shell (2) and the powder storage hopper (4).
2. The on-board unit of claim 1, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the mixed flow fan (1) comprises a blade (101), a guide vane (102) and a driving motor (103);
the blades (101) are welded on a conical impeller of the guide vane (102); the design of the blade (101) accords with a meridian acceleration method and a quasi-ternary flow rule;
the guide vane (102) is fixed in the mixed flow fan shell (2);
the driving motor (103) drives the blades (101) to rotate and generate oblique air flow; the driving motor (103) is connected with a power supply of the unmanned aerial vehicle; the driving motor (103) is electrically connected with the communication module (8).
3. The on-board unit of claim 1, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the pressurizing powder feeding channel (3) is connected with the mixed flow fan shell (2), the radius of the pressurizing powder feeding channel (3) is smaller than that of the mixed flow fan shell (2), and the chamfer angle theta of the pressurizing powder feeding channel (3) is 45-60 degrees.
4. The on-board unit of claim 1, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the powder storage hopper (4) is in a funnel shape, the upper half part of the powder storage hopper (4) is square, the lower half part of the powder storage hopper (4) is in a conical shape, and the bottom of the powder storage hopper (4) is directly communicated with the powder discharging channel (401);
the powder storage hopper (4) is designed into a funnel with a smooth inner wall, and the powder falls into the powder falling channel (401) by means of the gravity of the powder storage hopper.
5. The on-board unit of claim 1, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the motor (503) is connected with a power supply of the unmanned aerial vehicle; the motor (503) is connected with the unmanned aerial vehicle communication module.
6. The on-board unit of claim 2, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the communication module (8) transmits a ground instruction through a wireless signal; and the two communication modules (8) respectively control the rotating speeds of the driving motor (103) and the motor (503), so that the air volume and the air pressure are changed, and the powder discharge amount is controlled.
7. The on-board unit of claim 1, adapted for unmanned aerial vehicle operation of spraying dusts, characterized in that: the mixed flow fan comprises a mixed flow fan shell (2), a powder storage hopper (4), a powder discharging channel (401), a pressurizing powder feeding channel (3) and a powder outlet (6), wherein the mixed flow fan is processed by 3D printing and is made of carbon fibers.
8. The spraying method suitable for the airborne device for unmanned aerial vehicle powder spraying operation is characterized by comprising the following steps of:
firstly, installing an onboard powder spraying device on an operating unmanned aerial vehicle, and adding sufficient powder into a powder storage hopper (4);
secondly, controlling the unmanned aerial vehicle to take off, and when the unmanned aerial vehicle arrives at the upper part of the target crop, turning on the switches of the mixed flow fan (1) and the driving motor (103), so that the powder is gradually dropped into the pressurizing powder feeding channel (3) under the driving of the fluidizing structure (5);
thirdly, the mixed flow fan (1) starts to rotate to generate strong airflow, and the airflow is used for enhancing the air pressure through the cavity of the pressurizing powder feeding channel (3) and acting on the powder particles;
and fourthly, the powder particles reach the powder outlet (6) under the pushing of the air flow, and the powder particles are pressed down by the rotor wing of the unmanned aerial vehicle at the powder outlet (6) and jointly act on the target crops with the wind field of the airborne powder spraying device.
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| CN202110439221.9A CN113197185A (en) | 2021-04-23 | 2021-04-23 | Unmanned aerial vehicle powder applying operation airborne device and spraying method |
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| CN202110439221.9A CN113197185A (en) | 2021-04-23 | 2021-04-23 | Unmanned aerial vehicle powder applying operation airborne device and spraying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113812390A (en) * | 2021-09-28 | 2021-12-21 | 海南大学 | Natural rubber tree system of dusting that unmanned aerial vehicle used |
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