CN112517266A

CN112517266A - Plant protection unmanned aerial vehicle's atomizing device

Info

Publication number: CN112517266A
Application number: CN202011480928.6A
Authority: CN
Inventors: 廖芳; 邵霖文; 丁黎明; 舒薇; 张鎏波; 石佳慧; 贺达江; 米贤武; 黄利军; 许坤泰
Original assignee: Xupu Nongfeike Agricultural Technology Co ltd; Huaihua University
Current assignee: Xupu Nongfeike Agricultural Technology Co ltd; Huaihua University
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-03-19

Abstract

The invention relates to the technical field of atomization devices, and discloses an atomization device of a plant protection unmanned aerial vehicle, which comprises a mounting seat, a mounting head and a spray head cap which are sequentially arranged, wherein an air inlet pipe is arranged in the mounting head, a liquid inlet pipe is arranged on the periphery of the air inlet pipe, a mixing cavity is arranged below the air inlet pipe in the mounting head, the lower end of the liquid inlet pipe is provided with a plurality of guide pipes for guiding liquid medicine in the liquid inlet pipe into the mixing cavity, liquid outlets of the guide pipes are sharp nozzles with gradually reduced inner diameters, and the mixing cavity comprises a collision area; the atomization device of the plant protection unmanned aerial vehicle is simple and convenient, the size and the quality of a spraying system are reduced to a great extent, the cost is saved, the service life is long, spray holes are not easy to block, and the energy consumption is low.

Description

Plant protection unmanned aerial vehicle's atomizing device

Technical Field

The invention relates to the technical field of atomization devices, in particular to an atomization device of a plant protection unmanned aerial vehicle.

Background

Plant protection unmanned aerial vehicle's atomizer is one of plant protection unmanned aerial vehicle's core component, and the shower nozzle that the atomizing performance is good can effectively improve liquid medicine deposition volume, reduces and drifts, reduces the pesticide use amount, helps realizing accurate operation, improves agricultural environmental pollution. At present, the atomizing modes of the common nozzles of the plant protection unmanned aerial vehicle in China are direct-injection atomization, centrifugal atomization and rotary atomization. The direct-injection atomization mainly depends on the injection of water to achieve the aim of atomization, the water pressure requirement is high, and the larger the diameter of the spray hole is, the thicker the atomization is, so the diameter of the spray hole cannot be too large, and the flow regulation range is smaller; centrifugal atomization is to generate centrifugal force by high pressure water through a cyclone device to generate a liquid film, which is broken by air to be atomized. Centrifugal atomization is better than direct atomization, but it also requires higher water supply pressure, so the application conditions are limited; rotary atomization is the atomization of a liquid using high speed rotation. In recent years, under the support of local government's policy, agricultural plant protection unmanned aerial vehicle has obtained more and more extensive application, and the atomizing effect of shower nozzle is directly influencing plant protection unmanned aerial vehicle's work efficiency. Because the data quality of various plant protection unmanned aerial vehicles is uneven, the research on the atomizing nozzle is still in the primary stage.

In the prior art, in the atomization process, the droplet particle size of the atomization nozzle and the liquid medicine deposition are not easy to control, the drift amount is large, the control effect is influenced, the chemical injury is possibly caused, the nozzle orifice diameter of the pressure type atomization effect is smaller than that of a standard nozzle, the probability of nozzle blockage is higher, and the use cost is increased. The requirements of direct injection atomization and centrifugal atomization on water pressure are high, and the application conditions are limited. Rotary atomization requires high speed rotation to achieve atomization, but requires a motor to achieve high speed operation. The energy consumption is big, and all spare parts bear the pressure greatly in the water supply system, easily break down, the life-span is short. In order to avoid or reduce the influence of pesticide on non-target areas and environmental pollution, the key difficult problems to be solved in low-altitude spraying operation are to improve the atomization level of liquid medicine, reduce the drift of fog drops, improve the penetrability of the fog drops in crops and the deposition rate of the fog drops on leaf surfaces, and further improve the utilization rate of the pesticide.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the atomization device of the plant protection unmanned aerial vehicle, which is simple and convenient, greatly reduces the volume and the quality of a spraying system, saves the cost, has long service life, is not easy to block spray holes, and has low energy consumption.

The technical scheme adopted by the invention is as follows:

an atomizing device of a plant protection unmanned aerial vehicle comprises a mounting seat, a mounting head and a nozzle cap which are arranged in sequence, an air inlet pipe is arranged in the mounting head, a liquid inlet pipe is arranged on the periphery of the air inlet pipe, a mixing cavity is arranged below the air inlet pipe in the mounting head, the lower end of the liquid inlet pipe is provided with a plurality of guide pipes for guiding the liquid medicine in the liquid inlet pipe into the mixing cavity, the liquid outlet of the flow guide pipe is a sharp nozzle with gradually reduced inner diameter, the mixing cavity comprises a collision area, the liquid outlet of the flow guide pipe is horizontally opposite to the collision area, the air inlet pipe is positioned right above the collision area, the spray head cap is of a conical structure, the inside of the spray head cap is an ultrasonic atomizing chamber, the mixing cavity is communicated with the ultrasonic atomizing chamber, the lower end of the spray cap is provided with a spray hole communicated with the ultrasonic atomization chamber, and a track disc used for changing the movement direction of the atomized liquid medicine is installed at the spray hole.

Among this technical scheme, the medicament passes through the flow that the pipeline flows in the medicament through float flowmeter control by the liquid reserve tank and gets into this atomizing device's income liquid mouth, and the medicament passes through the admission pipe, changes its liquid stream direction, gets into the honeycomb duct, and the honeycomb duct divide into a plurality of florets with the medicament, the sharp mouth that diminishes for the internal diameter gradually at the liquid outlet of honeycomb duct for the medicament that flows out has certain pressure, and the liquid outlet level of honeycomb duct is just to the collision zone, and the liquid medicine can get into the collision zone perpendicularly.

Meanwhile, the gas is compressed by an external air compressor, the gas compressed to 0.5MPa is guided into the atomization device through a guide pipe, the compressed air entering the air inlet pipe enters a collision zone, the compressed gas vertically collides with liquid flow entering the collision zone, the gas atomizes the liquid into small liquid beads at the moment of collision, the small liquid beads enter a mixing cavity, a large number of small liquid beads are gathered in the mixing cavity and jointly enter the mixing cavity, when the liquid beads reach the ultrasonic atomization chamber, the gathered large number of small liquid beads collide with the inner wall of the ultrasonic atomization chamber at an ultrahigh speed close to the sound velocity to generate ultrasonic reaction, the inner wall of the ultrasonic atomization chamber is collided by the small liquid beads in the ultrasonic reaction to break the cohesive force of the liquid beads, so that the liquid beads are dispersed into more and finer liquid beads, the liquid beads are changed into a thin surface from granular shape, the contact area with the air is increased by hundreds of times, and the atomized micro liquid beads enter a rapid trajectory disk through jet holes, the track disc changes the moving direction of the micro liquid beads, increases the spraying area of the medicament and finally sprays the medicament on crops.

In the technical scheme, no moving part is arranged at the jet hole, so that negative effects such as corrosion and abrasion are eliminated, and the service life is prolonged.

The track disc is arranged, so that all-directional spraying can be realized by a single spray head, the large-area coverage is realized, the device is simple and convenient, the volume and the quality of a spraying system are reduced to a great extent, and the cost is saved.

Because the liquid inlet pipe and the jet hole are relatively large, and the jet hole vibrates and the inner cavity is cleaned, the jet hole is not easy to block, and the product is durable in use. The atomized particles of the ultrasonic spray head are very small and reach 1-10 microns, which cannot be achieved by the traditional pressure atomization spray head or the conventional two-fluid atomization spray head, and the atomization effect is far better than that of the prior art.

The medicament is sprayed out at a high speed through the track disc, the influence of natural wind on the spraying effect is reduced to the greatest extent, the penetrating force and penetrability of the fog drops on plant blades are increased, the retention of the fog drops on the blades are increased, the utilization rate of the medicament is improved, and the pollution of pesticide to the environment is reduced.

The use of this device need not provide high water pressure, and the energy consumption is little, only need with the leading-in this atomizing device of medicament, through the change of simple liquid flow direction and the design of sharp mouth make the liquid stream can get into this device perpendicularly can.

This device utilizes ultrasonic atomization, two flow atomization, fluid dynamic formula atomizing, makes the pesticide reach better atomization effect, improves prevention and cure effect, has practiced thrift the pesticide cost when improving atomization effect, has still increased medicinal area, increases the utilization ratio, and the design operation is simple, does not have moving part almost, and multiple atomization mode combines, can obtain good atomization effect under lower water pressure to operating conditions can be adjusted at great within range.

Further, in order to realize the even feed liquor effect, the inlet line has two, and two inlet line symmetric positions are in the both sides of intake pipe.

Furthermore, in order to ensure unidirectional air inlet of the air inlet pipe, the lower end of the air inlet pipe is provided with a unidirectional air inlet.

Furthermore, in order to control the internal pressure of the device, a pressure release valve is arranged on the spray head cap.

Furthermore, for the convenience of installing the device on a spraying device, the device further comprises an installation frame, and the installation seat is installed on the installation frame.

Furthermore, in order to facilitate installation of the track disc, threads are arranged at the injection hole, and the track disc is installed at the injection hole through the threads.

Furthermore, in order to better change the moving direction of the atomized liquid medicine, the track disc is disc-shaped and is internally provided with a spiral channel.

The invention has the beneficial effects that: among this technical scheme, the medicament passes through the flow that the pipeline flows in the medicament through float flowmeter control by the liquid reserve tank and gets into this atomizing device's income liquid mouth, and the medicament passes through the admission pipe, changes its liquid stream direction, gets into the honeycomb duct, and the honeycomb duct divide into a plurality of florets with the medicament, the sharp mouth that diminishes for the internal diameter gradually at the liquid outlet of honeycomb duct for the medicament that flows out has certain pressure, and the liquid outlet level of honeycomb duct is just to the collision zone, and the liquid medicine can get into the collision zone perpendicularly.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic diagram of the structure of the track disk of the present invention;

fig. 4 is a schematic diagram of the present invention.

In the figure: a mounting base 1; a mounting head 2; a spray cap 3; an air inlet pipe 4; a mixing chamber 5; a flow guide pipe 6; a sharp mouth 7; a collision zone 8; an ultrasonic atomization chamber 9; an injection hole 10; a track disk 11; a one-way air inlet 12; a pressure relief valve 13; a mounting frame 14; a liquid inlet pipe 15; a channel 16.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1-4, this embodiment provides an atomizing device for a plant protection unmanned aerial vehicle, which includes a mounting base 1, a mounting head 2, and a nozzle cap 3, which are sequentially disposed, an air inlet pipe 4 is disposed in the mounting head 2, a liquid inlet pipe 15 is disposed at the periphery of the air inlet pipe 4, a mixing chamber 5 is disposed below the air inlet pipe 4 in the mounting head 2, a plurality of flow guide pipes 6 for guiding liquid medicine in the liquid inlet pipe 15 into the mixing chamber 5 are disposed at the lower end of the liquid inlet pipe 15, a liquid outlet of the flow guide pipe 6 is a sharp nozzle 7 with an inner diameter gradually decreasing, the mixing chamber 5 includes a collision area 8, a liquid outlet of the flow guide pipe 6 is horizontally aligned to the collision area 8, the air inlet pipe 4 is disposed right above the collision area 8, the nozzle cap 3 is of a conical structure, an ultrasonic atomizing chamber 9 is disposed inside the nozzle cap 3, the mixing chamber 5 is communicated with the, a trace disk 11 for changing the moving direction of the atomized liquid medicine is installed at the injection hole 10.

Among this technical scheme, the medicament passes through the flow that the pipeline flows in the medicament through float flowmeter control by the liquid reserve tank and gets into this atomizing device's income liquid mouth, and the medicament passes through inlet tube 15, changes its liquid stream direction, gets into honeycomb duct 6, and honeycomb duct 6 divide into a plurality of florets with the medicament, for the sharp mouth 7 that the internal diameter gradually diminishes at the liquid outlet of honeycomb duct 6 for the medicament of outflow has certain pressure, and the liquid outlet level of honeycomb duct 6 is just to collision area 8, and the liquid medicine can get into collision area 8 perpendicularly.

Meanwhile, the gas is compressed by an external air compressor, the gas compressed to 0.5MPa is guided into the atomization device through a guide pipe, the compressed air entering the air inlet pipe 4 enters the collision zone 8, the compressed gas vertically collides with liquid flow entering the collision zone 8 due to the fact that the air inlet pipe 4 is positioned right above the collision zone 8, the gas atomizes the liquid into small liquid beads at the moment of collision, the small liquid beads enter the mixing cavity 5, a large number of small liquid beads are gathered in the mixing cavity 5 and jointly enter the mixing cavity 5, when the liquid beads reach the ultrasonic atomization chamber 9, the gathered large number of small liquid beads impact the inner wall of the ultrasonic atomization chamber 9 at an ultra-high speed close to the sound velocity to generate ultrasonic reaction, the small liquid beads impact the inner wall of the ultrasonic atomization chamber 9 in the ultrasonic reaction to break the cohesive force of the liquid beads, the liquid beads are dispersed into more and finer liquid beads, the liquid beads are changed into a thin surface shape from granular shape, and the, the atomized micro liquid beads quickly enter the track disc 11 through the jet holes 10, the track disc 11 changes the movement direction of the micro liquid beads, the spraying area of the pesticide is increased, and the pesticide is finally sprayed onto crops.

In the technical scheme, no moving part is arranged at the position of the injection hole 10, so that negative effects such as corrosion and abrasion are eliminated, and the service life is prolonged.

The track plate 11 is arranged, so that all-directional spraying can be realized by a single spray head, the coverage area is increased, the utilization rate is increased, the device is simple and convenient, the volume and the quality of a spraying system are reduced to a great extent, and the cost is saved.

Because the liquid inlet pipe 15 and the jet hole 10 are relatively large, and small liquid drops collide with the inner wall of the ultrasonic atomization chamber 9 in ultrasonic reaction, the jet hole 10 vibrates and simultaneously cleans an inner cavity, so that the jet hole is not easy to block, and the product is durable in use. The atomized particles of the ultrasonic spray head are very small and reach 1-10 microns, which cannot be achieved by the traditional pressure atomization spray head or the conventional two-fluid atomization spray head, and the atomization effect is far better than that of the prior art.

The medicament passes through the high-speed blowout of orbit dish 11, has reduced the influence of natural wind to spraying the effect to the at utmost, has increaseed the penetrating strength and the penetrability of droplet to the plant blade, has increased the amount of retention of droplet on the blade, has improved the utilization ratio of medicament, has reduced the pollution of pesticide to the environment.

The use of this device need not provide high water pressure, and the energy consumption is little, only need with the leading-in this atomizing device of medicament, through the change of simple liquid flow direction and the design of sharp mouth 7 make the liquid stream can get into this device perpendicularly can.

Example 2:

this embodiment is optimized based on embodiment 1 described above.

In order to realize the uniform liquid inlet effect, the number of the liquid inlet pipes 15 is two, and the two liquid inlet pipes 15 are symmetrically arranged on two sides of the air inlet pipe 4.

Example 3:

this embodiment is optimized based on embodiment 2 described above.

In order to ensure unidirectional air intake of the air inlet pipe 4, the lower end of the air inlet pipe 4 is provided with a unidirectional air inlet 12.

Example 4:

this embodiment is optimized based on embodiment 3 described above.

In order to control the internal pressure of the device, the nozzle cap 3 is provided with a pressure relief valve 13.

Example 5:

this embodiment is optimized based on embodiment 4 described above.

In order to facilitate the mounting of the device on a spraying device, the device further comprises a mounting frame 14, and the mounting base 1 is mounted on the mounting frame 14.

Adopt the screw to realize fixed mounting between mount pad and the mounting bracket, through the mounting bracket with this device ann dirty on sprinkler can.

When this device is installed on plant protection unmanned aerial vehicle, can the direct mount under plant protection unmanned aerial vehicle, if unmanned aerial vehicle's is bulky, also can install a plurality of this devices respectively in plant protection unmanned aerial vehicle's rotor below, the method of mount pad installation and mounting bracket direct mount can be adopted to the mounting means.

Example 6:

this embodiment is optimized based on embodiment 5 described above.

In order to facilitate the installation of the track disk 11, the injection holes 10 are provided with threads, and the track disk 11 is installed at the injection holes 10 through the threads.

Example 7:

this embodiment is optimized based on embodiment 6 described above.

In order to change the moving direction of the atomized liquid medicine, the track disk 11 is a disk shape and a spiral channel 16 is arranged in the track disk.

The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims

1. The utility model provides a plant protection unmanned aerial vehicle's atomizing device which characterized in that: including mount pad, installation head and the shower nozzle that sets gradually emit, be equipped with the intake pipe in the installation head, the periphery of intake pipe is equipped with the inlet tube, the below that is located the intake pipe in the installation head is equipped with the hybrid chamber, the lower extreme of inlet tube is equipped with a plurality of honeycomb ducts of leading-in to the hybrid chamber of the liquid medicine that will go into the liquid pipe, the liquid outlet of honeycomb duct is the sharp mouth that the internal diameter diminishes gradually, the hybrid chamber includes the collision area, the liquid outlet level of honeycomb duct is just to the collision area, the intake pipe is located the collision area directly over, the shower nozzle emits for the toper structure, the inside that the shower nozzle emits is ultrasonic atomization room, hybrid chamber and ultrasonic atomization room intercommunication, the lower extreme that the shower nozzle emits is equipped with the jet orifice that communicates with ultrasonic atomization room, jet orifice department installs the orbit dish that is used.

2. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: the inlet tube has two, and two inlet tube symmetries are located the both sides of intake pipe.

3. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: the lower end of the air inlet pipe is a one-way air inlet.

4. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: and a pressure release valve is arranged on the spray head cap.

5. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: still include the mounting bracket, the mount pad is installed on the mounting bracket.

6. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: the track disc is installed at the jet hole through threads.

7. The plant protection unmanned aerial vehicle's atomizing device of claim 1, characterized in that: the track disc is disc-shaped, and a spiral channel is arranged in the track disc.