CN117044703A - A precision pesticide application mechanism for forestry pest control - Google Patents

Abstract

The invention discloses a precise pesticide application mechanism for preventing and controlling forestry diseases and insect pests. By arranging a liquid barrier plate in a liquid storage tank to separate it into an upper storage cavity and a lower storage cavity, differentiated spraying of pesticides to mixed trees can be achieved and discharged into The gas and liquid in the atomizer hood collide at high speed towards the collision part to produce atomized particles, which are accelerated and discharged from the corresponding nozzle on the nozzle frame through the venturi pipe section and conduit. At the same time, the activated carbon filling section connected to the negative pressure suction pipe is Improve the use effect and spraying range of atomized liquid medicine, and accurately spray the amount of liquid medicine; adjust the flow rate of the gas discharged from the air pump body, so that the lower arch shrapnel is purged and partially flipped upward, and the collision part is at the spring sleeve rod It moves upward under the action of , thereby extending the collision distance between the liquid medicine and the collision part, and pulling the spring piece outward will expand the elastic ring part, increasing the diameter of the outlet port of the matching gap, and increasing the amount of discharged liquid medicine, thereby Change the diameter of the atomized liquid particles produced.

Description

Precise pesticide application mechanism for forestry pest control

Technical Field

The invention belongs to the technical field of forestry pest control pesticide application, and particularly relates to a precise pesticide application mechanism for forestry pest control.

Background

In forestry, mixed planting is a common planting method which is widely applied to forest planting and forest management, mixed planting refers to a method of planting different tree species or tree species combinations together on the same land, mixed planting can bring various potential benefits, such as increasing biodiversity, improving the stability of an ecological system, improving the disease and pest resistance and soil holding capacity, and optimizing economic benefits, but when the forestry generates diseases and pests, the trees of different species have different tolerance to liquid medicine, so that the trees need to be applied according to the corresponding precision of the tree species, but the heights of the trees are generally higher, the high-altitude pesticide application is inconvenient, and meanwhile, when the pesticide is sprayed into the air, volatile organic compounds possibly interact with pesticide molecules, so that the evaporation of the pesticide molecules is reduced, and the effective concentration in the spraying liquid is affected;

the unmanned aerial vehicle pesticide application system provides a high-efficiency, accurate and controllable pesticide application mode through automatic and accurate flight control, can improve forestry protection effect and reduce pesticide waste and environmental pollution risk, and particularly comprises an unmanned aerial vehicle platform, a pesticide application device, a pesticide liquid supply system, a navigation and positioning system and a control system, wherein the pesticide application device is a component for spraying pesticide to a target area and generally comprises a spray head, a spray nozzle, a spray system, a transfusion pipeline and the like, the selection of the spray head and the spray nozzle is determined according to pesticide application requirements and characteristics of target crops, uniform spraying and covering effects are ensured, the pesticide liquid supply system is used for storing and conveying pesticide liquid and comprises a liquid storage tank, a pump, a flow controller, a pipeline and the like, and the pesticide liquid supply system can provide stable pesticide liquid flow and ensure accurate conveying of the pesticide liquid to meet pesticide application requirements;

however, the above scheme has the following disadvantages: to the forestry of mixed planting, only deposit a liquid medicine in the liquid reserve tank in unmanned aerial vehicle is administered medicine usually, can not distinguish according to the tree mixed planting condition and administer medicine, if set up two liquid reserve tanks, need set up two pump bodies again, use cost has been improved, also there is the influence to the atomizing liquid medicine granule size that sprays according to the drug resistance of tree kind, how to improve to the unmanned aerial vehicle precision administration mechanism that mixed planting forestry adopted, avoid the double pump body setting to realize carrying out distinguishing the medicine of mixed planting tree in, carry out adaptability adjustment to the particle diameter of atomizing liquid medicine.

Disclosure of Invention

The invention aims to provide a precise pesticide application mechanism for forestry pest control, which solves the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the precise pesticide applying mechanism for forestry pest control comprises a liquid storage tank arranged on an unmanned body and a spray head frame arranged below a rotor wing, wherein an annular outer convex part is arranged on the outer side of the lower part of the liquid storage tank, a liquid separation plate is arranged on the upper part of the inner side of the liquid storage tank, an upper storage cavity and a lower storage cavity are respectively formed above and below the liquid storage tank, an outer annular sleeve is annularly arranged in each of the upper storage cavity and the lower storage cavity and extends to penetrate through the top wall of the corresponding storage cavity, an air inlet cylinder is inserted in the outer annular sleeve, a matching gap capable of accommodating negative pressure suction of liquid medicine in the storage cavity is formed between the air inlet cylinder and the outer annular sleeve, and an air pump body is arranged on the liquid storage tank and communicated with the air inlet end of the air inlet cylinder through a three-way valve;

the outer ring sleeve is sleeved with an atomization cover at the outer side of the extending end of the outer ring sleeve and the air inlet cylinder, the caliber of the outer ring sleeve extending to the atomization cover area is gradually reduced so as to generate tiny liquid medicine particles, an installation block positioned above the air outlet side of the air inlet cylinder is arranged in the atomization cover, a collision part is movably arranged at the bottom end surface of the installation block and used for being collided with high-speed flowing air discharged by the liquid medicine discharged by a fit clearance and discharged by the air inlet cylinder, so as to generate atomized liquid medicine particles, an elastic ring part is arranged at the outlet end of the outer ring sleeve, an air flow pushing assembly connected with the elastic ring part is arranged on the installation block, and the air flow pushing assembly drives the elastic ring part to be outwards expanded so as to increase the liquid discharge amount of the fit clearance along with the gradual increase of the discharged air flow of the air inlet cylinder, and simultaneously the collision part and the air flow pushing assembly is gradually close to the bottom end surface of the installation block;

and the exhaust side of the atomizing cover is connected with a corresponding nozzle on the nozzle frame through a guide pipe.

Preferably, the spray head frame comprises an upper cavity channel and a lower cavity channel, both sides of the bottom end surfaces of the upper cavity channel and the lower cavity channel are communicated with the spray head, an outer ring sleeve on the lower storage cavity extends to penetrate through the outer annular flange, and the control end of the air pump body is connected with the control end of the unmanned aerial vehicle body.

Preferably, the bottom end face of the liquid storage tank is provided with a lower annular air passage, an upper annular air passage is arranged in the liquid separation plate, the lower annular air passage is connected with the upper annular air passage and the air inlet cylinder through a first outlet of an electrically controlled three-way valve, a control end of the three-way valve is connected with the unmanned aerial vehicle body, and the exhaust side of the air pump body is respectively communicated with the lower annular air passage and the upper annular air passage.

Preferably, a venturi section is arranged between the conduit and the exhaust side of the atomization cover, a negative pressure air suction pipe is arranged on the side wall of the venturi section in a penetrating way, an active carbon filling section for adsorbing and filtering organic gas and volatile organic compounds in air is arranged at the air inlet end of the negative pressure air suction pipe, and a back flushing pipe is reversely inserted into the exhaust port of the active carbon filling section and is connected with a second outlet of the three-way valve.

Preferably, the installation piece upper portion has turns over a groove, is equipped with the movable groove on the lower part lateral wall, the air current promotes the subassembly and includes along vertical slip runs through in the spring loop bar of movable groove inner wall bottom surface, and spring loop bar bottom stretches out the end and is connected with the collision portion, can overturn the activity in turning over a inslot and be provided with down the arch shell fragment, down arch shell fragment and spring loop bar elastic connection setting, the gradual increase of inlet tube exhaust air can make down the arch shell fragment upwards overturn and indirectly drive the collision portion through the spring loop bar and upwards move.

Preferably, a top spring plate is arranged between opposite surfaces of the inner sides of the lower arch spring plates and movably penetrates through the movable groove, the top spring plates are always in pressing contact with the spring sleeve rod, an outward pulling spring plate is arranged between free ends of two sides of the bottom of the lower arch spring plates and the elastic ring part, and when the lower arch spring plates are turned upwards, the elastic ring part is flared through the outward pulling spring plate, so that the fit clearance is increased.

Preferably, the upper storage cavity and the lower storage cavity are provided with filling ports on the top walls corresponding to the upper storage cavity and the lower storage cavity.

Compared with the prior art, the invention has the beneficial effects that:

1. different liquid medicines can be placed for mixed forestry by arranging a liquid separation plate in the liquid storage tank to be divided into an upper liquid storage cavity and a lower liquid storage cavity, on the basis of the arrangement of a single air pump body, the opening and closing of two outlets of a three-way valve are controlled, different pesticide spraying to mixed trees is realized, on the basis of Bernoulli principle, negative pressure suction force is generated at the outlet end of a fit clearance by air discharged by an air inlet cylinder, then the liquid medicine in the corresponding liquid storage cavity is sucked and discharged, finally, the gas discharged to an atomization cover and the liquid medicine collide at a high speed towards a collision part to generate atomized particles, the generated atomized particles are sequentially discharged from a corresponding spray head on a spray head frame through a venturi tube section and a guide tube, and meanwhile, the influence of organic waste gas and the like in the air on the atomized liquid medicine is avoided by an active carbon filling section connected with a negative pressure air, so that the use effect and the spraying range of the atomized liquid medicine are improved, and the application quantity of the refined liquid medicine is ensured;

2. the flow rate of the discharged gas of the air pump body is adaptively adjusted, so that the lower arch elastic sheet is purged and is subjected to upward local overturning, the top elastic sheet is firstly enabled to move upwards in the movable groove along with the continuous overturning of the lower arch elastic sheet, the collision part moves upwards under the action of the spring sleeve rod, the collision distance between the liquid medicine and the collision part is prolonged, the elastic ring part is flared by the external pulling elastic sheet, the caliber of the outlet end of the fit gap is improved, the amount of discharged liquid medicine is increased, and the diameter of the generated atomized liquid medicine particles is changed.

Drawings

FIG. 1 is a schematic view in partial cross-section of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the liquid storage tank of FIG. 1 in a partially cut-away state;

FIG. 3 is a schematic illustration of the backwash state air path of the activated carbon fill section of FIG. 2;

fig. 4 is a schematic diagram showing the distribution of atomized liquid medicine produced by the contact of the liquid medicine discharged from the fit gap and the air discharged from the air inlet cylinder with the collision part in fig. 2;

FIG. 5 is a schematic view showing a change in the state of the lower dome when the flow rate of the exhaust gas from the inlet cylinder of FIG. 4 is gradually increased;

FIG. 6 is a schematic view of the mating areas of the lower dome spring, impact portion, elastic ring portion, outer collar and air inlet cylinder of the mounting block of FIG. 4 in a half-cut-away state;

FIG. 7 is a sectional view of the interior of the shower head holder of the present invention.

In the figure: 1. an unmanned body; 2. a liquid storage tank; 3. a nozzle frame; 4. an annular outer flange; 5. a liquid separation plate; 6. an outer ring sleeve; 7. an air inlet cylinder; 8. a three-way valve; 9. an atomization cover; 10. a mounting block; 11. a collision part; 12. an elastic ring portion; 13. a conduit; 14. a lower annular air passage; 15. an upper annular air passage; 16. a venturi section; 17. a negative pressure suction pipe; 18. an activated carbon filling section; 19. a back flushing pipe; 20. a turnover groove; 21. a movable groove; 22. a spring sleeve rod; 23. a lower arch spring plate; 24. a top spring plate; 25. pulling out the spring plate; 26. a filler neck; 101. an upper storage chamber; 102. a lower storage chamber; 201. a fit gap; 301. a spray head; 401. an upper channel; 402. a lower channel; 601. an air pump body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution:

embodiment one:

the precise pesticide applying mechanism for forestry pest control comprises a liquid storage tank 2 arranged on an unmanned machine body 1 and a spray head frame 3 arranged below a rotor wing, wherein an annular outer convex part 4 is arranged on the outer side of the lower part of the liquid storage tank 2, a liquid separation plate 5 is arranged on the upper part of the inner side of the liquid storage tank 2, an upper storage cavity 101 and a lower storage cavity 102 are respectively formed below the liquid storage tank, different pesticide liquid ratios are placed in the upper storage cavity 101 and the lower storage cavity 102 according to the tree types of mixed seeds, an outer annular sleeve 6 is annularly arranged in each of the upper storage cavity 101 and the lower storage cavity 102 and extends to penetrate through the top wall of the corresponding storage cavity, a gas inlet cylinder 7 is inserted into the outer annular sleeve 6, a fit gap 201 capable of accommodating negative pressure suction of the pesticide liquid in the storage cavity is formed between the outer annular sleeve and can be filled with a plurality of non-illustrated isolation plates, the fit gap 201 is divided into a plurality of channels for flowing the pesticide liquid, a gas pump body 601 is arranged on the liquid storage tank 2 and is communicated with the gas inlet end of the gas inlet cylinder 7 through a three-way valve 8, and the gas pump body 601 selects any one of a high-pressure fan or a compressor according to actual use requirement;

high-pressure fan: the high-pressure fan is usually provided with a fan blade and a motor, and can generate higher air flow pressure, the air pump is provided with a high-pressure outlet, and can provide enough pressure to spray liquid medicine into fine particles, and the high-pressure fan is provided with a centrifugal fan, a side-opening fan and the like;

a compressor: the compressor is used for generating high-pressure air flow through mechanical compression of air and spraying liquid medicine into mist, and common compressor types comprise a piston compressor, a screw compressor and the like;

the outer ring sleeve 6 is sleeved with an atomization cover 9 at the outer side of the extending end of the outer ring sleeve 6, the caliber of the outer ring sleeve 6 and the caliber of the air inlet cylinder 7 extending to the area of the atomization cover 9 are gradually reduced so as to generate tiny liquid medicine particles, an installation block 10 positioned above the air outlet side of the air inlet cylinder 7 is arranged in the atomization cover 9, a collision part 11 is movably arranged at the bottom end surface of the installation block 10 and is used for colliding with liquid medicine discharged by a fit clearance 201 and high-speed flowing air discharged by the air inlet cylinder 7 so as to generate atomized liquid medicine particles, an elastic ring part 12 is arranged at the outlet end of the outer ring sleeve 6, the elastic ring part 12 is made of silicone rubber materials, a metal wire rib which is not shown is annularly embedded in the elastic ring part 12 so as to avoid larger deformation when air flows through, an air flow pushing component connected with the elastic ring part 12 is arranged on the installation block 10, and the air flow pushing component drives the elastic ring part 12 to be outwards expanded to increase the liquid quantity of the fit clearance 201 along with the gradual increase of the air flow of the discharged by the air inlet cylinder 7, and meanwhile, the collision part 11 is gradually close to the bottom end surface of the installation block 10;

the exhaust side of the atomizing cover 9 is connected with a corresponding nozzle 301 on the nozzle frame 3 through a conduit 13.

In another embodiment, the specific structural design of the liquid separation plate 5 can be adaptively deformed, so that the liquid storage tank 2 can be divided into storage cavities with corresponding numbers according to the actual tree species.

Embodiment two:

on the basis of the first embodiment, further description is made, the spray head frame 3 is composed of an upper cavity channel 401 and a lower cavity channel 402, both sides of the bottom end surfaces of the upper cavity channel 401 and the lower cavity channel 402 are communicated with the spray head 301, the spray head 301 is of a hollow cylindrical structure, a guide vane is arranged in the spray head 301 and used for limiting the discharge direction of atomized liquid medicine flowing through the spray head, an upper outer ring sleeve 6 of a lower storage cavity 102 of the spray head 301 extends to penetrate through an annular outer flange 4, and a power control end of an air pump body 601 is connected with a control end of the unmanned aerial vehicle body 1;

the bottom end face of the liquid storage tank 2 is provided with a lower annular air passage 14, an upper annular air passage 15 is arranged in the liquid separation plate 5, the lower annular air passage 14 is connected with a first outlet of the upper annular air passage 15 and the air inlet cylinder 7 through an electrically controlled three-way valve 8, the control end of the three-way valve 8 is connected with the unmanned aerial vehicle body 1, the air exhaust side of the air pump body 601 is respectively communicated with the lower annular air passage 14 and the upper annular air passage 15, and the opening and closing of the lower annular air passage 14 and the upper annular air passage 15 can be selectively controlled through the opening and closing control of the three-way valve 8.

Embodiment III:

further describing the first embodiment, a venturi section 16 is provided between the conduit 13 and the exhaust side of the atomization cap 9, a negative pressure air suction pipe 17 is inserted through the venturi section 16, the venturi section 16 is a fluid pipe, the venturi section 16 has a cross-sectional shape that is reduced before being enlarged, the discharge end of the atomization cap 9 is used as an expansion part before the venturi section 16 is reduced, when fluid passes through the constriction section of the venturi section 16, the cross-sectional reduction leads to the increase of the flow velocity in the pipe, while according to the bernoulli principle, the pressure is reduced while the flow velocity in the constriction section is increased, then when the fluid passes through the expansion section, the cross-sectional expansion leads to the decrease of the flow velocity, and the bernoulli principle indicates that the pressure is increased while the flow velocity in the expansion section is decreased;

in this process, by inserting the negative pressure suction pipe 17 into the throat part, external air can be introduced into the constriction section of the throat part of the venturi tube section 16 through the negative pressure suction pipe 17, when the external air is sucked, it is mixed with fluid in the tube and added to flow, and the air in the venturi tube section 16 is also accelerated and forms a higher-speed air flow due to the increase of the flow speed and the decrease of the pressure of the constriction section, so that the flow speed of the air discharged from the venturi tube can be increased by sucking the external air;

the air inlet end of the negative pressure air suction pipe 17 is provided with an activated carbon filling section 18 for adsorbing and filtering organic gas and volatile organic compounds in the air, and the arrangement of the activated carbon filling section 18 avoids the following influence on atomized liquid medicine particles:

evaporation of volatile organic compounds: VOCs have higher volatility in the air, so that the VOCs can be subjected to competitive evaporation with pesticides, and when the pesticides are sprayed into the air, volatile organic compounds can interact with pesticide molecules, so that the evaporation of the pesticide molecules is reduced, and the effective concentration in spray liquid is affected;

diffusion and drift: the existence of VOCs can influence the diffusion and drift performance of pesticides, part of volatile organic compounds can interact with pesticide molecules to change the surface tension and fluidity of the pesticides, so that the dispersibility of spray liquid is reduced, the diffusion range is reduced, and the covering effect of the pesticides is influenced;

the partial volatile organic compounds are specifically:

solvent-based organic compound: for example, alcohols (such as ethanol and propanol), ketones (such as acetone), ethers and the like, and the solvent organic compounds have better solubility, can form a mutually soluble system with pesticide molecules, and can reduce the surface tension of the pesticide in water or soil so as to enable the pesticide to be more easily permeated and diffused.

Volatile solvents: volatile solvents like toluene, dimethylformamide (DMF) may also interact with pesticide molecules, which solvents may form films on the surface of the pesticide particles, changing their surface properties, e.g. reducing the surface tension of the pesticide particles.

Vapor phase of volatile solvent: some volatile organic compounds interact with pesticide molecules in the gas phase, which can alter the surface properties of the pesticide particles by forming a charged relatively adsorbed layer on the surface of the particles, thereby affecting surface tension and flowability.

Gaseous pollutants: gaseous contaminants present in the air, such as sulphur compounds, nitrogen oxides, etc., which may react with the pesticide molecules and change their properties, may form an adhesion layer on the surface of the pesticide particles, thereby affecting their surface tension and flowability;

the back flushing pipe 19 is reversely inserted into the exhaust port of the activated carbon filling section 18 and is connected with the second outlet of the three-way valve 8, and the air discharged by the air pump body 601 can be discharged towards the air outlet side of the activated carbon filling section 18 by closing the three-way valve 8, so that the purging and discharging of the organic waste gas and the like absorbed by the activated carbon filling section 18 are realized, in order to further improve the back flushing effect on the activated carbon filling section 18, an electric heating wire connected with an external temperature controller can be prefabricated in the back flushing pipe 19, the reverse hot air flow discharged into the activated carbon filling section 18 has a better purging and discharging effect on the organic waste gas absorbed by the electric heating wire, and an unillustrated activated carbon filter layer is preset at the air inlet end of the air pump body 601.

Embodiment four:

on the basis of the first embodiment, further description is provided, the upper portion of the installation block 10 is provided with a turnover groove 20, the turnover groove 20 is of a V-shaped structure which is caused, a fixed shaft is preset in the turnover groove 20, a movable groove 21 is arranged on the side wall of the lower portion, an air flow pushing assembly comprises a spring sleeve rod 22 which vertically slides and penetrates through the bottom end surface of the inner wall of the movable groove 21, the bottom extending end of the spring sleeve rod 22 is connected with the collision part 11, an upper spring of the spring sleeve rod 22 is fixedly connected with the installation block 10, further, spring thrust towards the installation block 10 is generated on the collision part 11 through the spring sleeve rod 22, a lower arch spring piece 23 is movably arranged in the turnover groove 20, the lower arch spring piece 23 is formed by steel elastic sheet materials, the lower arch spring piece 23 is of an inverted V-shaped structure, a through hole which accommodates the fixed shaft to slide and penetrates is arranged in the middle of the lower arch spring piece 23, meanwhile, in order to improve the restoration effect that the lower arch spring piece 23 deforms under the action of external force, a torsion spring is preset between the fixed shaft and the inner wall of the through hole of the lower arch piece 23, the torsion spring is adjusted according to the magnitude of the air flow thrust of the inlet 7, and then the flow of atomized particles is adjusted indirectly, the flow speed of the atomized particles can be adjusted, and the lower arch spring piece 23 is discharged and the air can be gradually moved up through the spring sleeve rod 22, and the upper arch spring piece 22 is connected with the upper arch spring piece 22, and the upper arch spring piece 11 is arranged and is gradually and is connected with the upper and is capable of being pushed and gradually and higher;

a top spring piece 24 is arranged between opposite surfaces of the inner side of the lower arch spring piece 23 and movably penetrates through the movable groove 21, the top spring piece 24 is always in pressing contact with the spring sleeve rod 22, along with the upward turning of the lower arch spring piece 23, the displacement of the top spring piece 24 in the movable groove 21 continuously moves upwards, an outward pulling spring piece 25 is arranged between free ends of two sides of the bottom of the lower arch spring piece 23 and the elastic ring part 12, the outward pulling spring piece 25 is formed by elastic steel sheets with radians, and when the lower arch spring piece 23 turns upwards, the elastic ring part 12 is flared through the outward pulling spring piece 25, so that the fit gap 201 is increased;

the upper storage cavity 101 and the lower storage cavity 102 are provided with a filling port 26 on the top wall corresponding to each other, so that the liquid medicine can be conveniently added.

The working principle is as follows: different liquid medicines can be placed for mixed forestry by arranging a liquid separation plate 5 in a liquid storage tank 2 to be divided into an upper storage cavity 101 and a lower storage cavity 102, different medicines are applied to mixed trees by controlling the opening and closing of two outlets of a three-way valve 8 based on the arrangement of a single air pump body 601, specifically, the types of the woods at different positions in a navigation path are determined according to the mapping of an unmanned aerial vehicle body 1 for the mixed forestry and the setting of the navigation path in advance, after the unmanned aerial vehicle body 1 flies to a proper height above the corresponding tree, the corresponding outlet of the three-way valve 8 is opened to enable the corresponding air inlet cylinder 7 in the upper storage cavity 101 or the lower storage cavity 102 to be in a communication state, air is discharged from an air pump body 601 to discharge the air to the air inlet cylinder 7 side at the corresponding position through a lower annular air passage 14 or an upper annular air passage 15 based on Bernoulli principle, the air discharged by the air inlet cylinder 7 generates negative pressure suction at the outlet end of the fit clearance 201, so that the liquid medicine in the corresponding storage cavity is sucked and discharged, the gas discharged into the atomizing cover 9 and the liquid medicine collide at high speed towards the collision part 11 to generate atomized particles, the generated atomized particles are sequentially discharged from the corresponding spray heads 301 on the spray head frame 3 through the venturi tube section 16 and the guide tube 13, in the process, the negative pressure air suction pipe 17 sucks the outside air and secondarily accelerates the discharged atomized liquid medicine particles based on the venturi effect, the spraying range of the atomized liquid medicine particles is improved, meanwhile, the active carbon filling section 18 connected with the negative pressure air suction pipe 17 avoids the influence of organic waste gas and the like in the air on the atomized liquid medicine, so that the use effect and the spraying range of the atomized liquid medicine are improved, and the discharge amount of the precise liquid medicine is increased;

according to the thickness degree of the tree crowns of the forest trees obtained through unmanned aerial vehicle mapping and the optimal diameter range of the atomized hydraulic particles needed by the corresponding forest trees, the flow rate of the discharged air of the air pump body 601 is adaptively adjusted, so that the lower arch elastic sheet 23 is purged and is subjected to upward local overturning, the top elastic sheet 24 is firstly enabled to move upwards in the movable groove 21 along with the continuous overturning of the lower arch elastic sheet 23, the collision part 11 moves upwards under the action of the spring sleeve rod 22, so that the collision distance between the liquid medicine and the collision part 11 is prolonged, the outer pulling elastic sheet 25 can carry out flaring operation on the elastic ring part 12, the caliber of the outlet end of the fit gap 201 is improved, the amount of discharged liquid medicine is increased, and the diameter of the generated atomized liquid medicine particles is changed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (7)

1. The utility model provides a forestry pest control's precision mechanism of dosing, includes the liquid reserve tank that sets up on unmanned aerial vehicle body to and set up the sprayer frame in rotor below, its characterized in that: the lower outer side of the liquid storage tank is provided with an annular outer protruding part, the upper part of the inner side of the liquid storage tank is provided with a liquid separation plate, an upper storage cavity and a lower storage cavity are respectively formed above and below the liquid storage tank, an outer annular sleeve is annularly arranged in each of the upper storage cavity and the lower storage cavity and extends to penetrate through the top wall of the corresponding storage cavity, an air inlet cylinder is inserted into the outer annular sleeve, a fit clearance capable of accommodating negative pressure suction of liquid medicine in the storage cavity is formed between the air inlet cylinder and the outer annular sleeve, and an air pump body is arranged on the liquid storage tank and communicated with the air inlet end of the air inlet cylinder through a three-way valve;

the outer ring sleeve is sleeved with an atomization cover at the outer side of the extending end of the outer ring sleeve and the air inlet cylinder, the caliber of the outer ring sleeve extending to the atomization cover area is gradually reduced so as to generate tiny liquid medicine particles, an installation block positioned above the air outlet side of the air inlet cylinder is arranged in the atomization cover, a collision part is movably arranged at the bottom end surface of the installation block and used for being collided with high-speed flowing air discharged by the liquid medicine discharged by a fit clearance and discharged by the air inlet cylinder, so as to generate atomized liquid medicine particles, an elastic ring part is arranged at the outlet end of the outer ring sleeve, an air flow pushing assembly connected with the elastic ring part is arranged on the installation block, and the air flow pushing assembly drives the elastic ring part to be outwards expanded so as to increase the liquid discharge amount of the fit clearance along with the gradual increase of the discharged air flow of the air inlet cylinder, and simultaneously the collision part and the air flow pushing assembly is gradually close to the bottom end surface of the installation block;

and the exhaust side of the atomizing cover is connected with a corresponding nozzle on the nozzle frame through a guide pipe.

2. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 1, wherein: the shower nozzle frame comprises upper chamber way and lower chamber way, and upper chamber way and lower chamber way bottom both sides all set up with the shower nozzle intercommunication, lower store up the upper outer ring cover of chamber and extend and run through to the annular outer protruding portion, the air pump body control end is connected with unmanned aerial vehicle body control end.

3. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 1, wherein: the liquid storage tank bottom end face is equipped with annular air flue down, be provided with annular air flue in the baffle, through the first exit linkage of the three-way valve of electric control between annular air flue and the upper annular air flue and the inlet tube down, and three-way valve control end is connected with unmanned aerial vehicle body, the air pump body exhaust side sets up with annular air flue and upper annular air flue intercommunication respectively.

4. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 3, wherein: the air inlet end of the negative pressure air suction pipe is provided with an activated carbon filling section for adsorbing and filtering organic gas and volatile organic compounds in the air, and an air outlet part of the activated carbon filling section is reversely inserted with a backwashing pipe and connected with a second outlet of the three-way valve.

5. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 1, wherein: the installation piece upper portion has turns over a groove, is equipped with the movable groove on the lower part lateral wall, the air current promotes the subassembly and runs through in the spring loop bar of movable groove inner wall bottom end face including following vertical slip, and spring loop bar bottom stretches out the end and is connected with the collision portion, can overturn the activity in turning over a groove and be provided with down the arch shell fragment, down arch shell fragment and spring loop bar elastic connection setting, inlet tube exhaust air's gradual increase can make down the arch shell fragment upwards overturn and indirectly drive the collision portion through the spring loop bar and upwards move.

6. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 5, wherein: the lower arch spring piece is provided with a top spring piece between the opposite surfaces of the inner sides of the lower arch spring piece and movably penetrates through the movable groove, the top spring piece is always in pressing contact with the spring sleeve rod, an outward pulling spring piece is arranged between the free ends of the two sides of the bottom of the lower arch spring piece and the elastic ring portion, and when the lower arch spring piece is turned upwards, the elastic ring portion is flared through the outward pulling spring piece, so that the fit clearance is increased.

7. A precision pesticide delivery mechanism for forestry pest control as set forth in claim 1, wherein: and a filling port is arranged on the top wall of the upper storage cavity, which corresponds to the lower storage cavity.