CN108464291B - Pulse combustion diffuse spraying device and flying pesticide diffuse sprayer - Google Patents
Pulse combustion diffuse spraying device and flying pesticide diffuse sprayer Download PDFInfo
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- CN108464291B CN108464291B CN201810476396.5A CN201810476396A CN108464291B CN 108464291 B CN108464291 B CN 108464291B CN 201810476396 A CN201810476396 A CN 201810476396A CN 108464291 B CN108464291 B CN 108464291B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 88
- 238000005507 spraying Methods 0.000 title claims abstract description 34
- 239000000575 pesticide Substances 0.000 title claims abstract description 30
- 239000003814 drug Substances 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 230000035939 shock Effects 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000013016 damping Methods 0.000 claims description 28
- 239000000446 fuel Substances 0.000 claims description 27
- 229940079593 drug Drugs 0.000 claims description 10
- 230000002572 peristaltic effect Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 21
- 239000000779 smoke Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 15
- 238000004880 explosion Methods 0.000 description 13
- 230000009471 action Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0025—Mechanical sprayers
- A01M7/0032—Pressure sprayers
- A01M7/0042—Field sprayers, e.g. self-propelled, drawn or tractor-mounted
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Mechanical Engineering (AREA)
- Insects & Arthropods (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Catching Or Destruction (AREA)
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The invention discloses a pulse combustion diffuse spraying device and a flying pesticide diffuse sprayer containing the same, wherein the spraying device forms a triple branch, the pulse combustion diffuse spraying device forms high-heat explosive gas flow in a combustion chamber, and the high-heat explosive gas flow is discharged to a surrounding area of an exhaust pipe, the exhaust pipe and a shell pipe and a discharge Kong Sanchong branch after being subjected to pressure reduction and shock absorption, so that the impact of the explosive gas flow on the device is reduced in the process, and the liquid medicine is properly heated, properly accelerated and directionally discharged, so that the liquid medicine is vaporized and then discharged along with the gas flow to form a directional diffuse liquid medicine smoke group; the structure of carburetor, ignition device, step-down shock attenuation shell is repacked adaptively, makes it more suitable for the application of this equipment, and adopts unique support and equipment structure, makes equipment overall stability, equilibrium good, and the structure is intensive, and equipment structure maintains stably and does not cause the influence to the flight process in the course of working, can realize the quick replacement assembly of all kinds of different specification rotor crafts.
Description
Technical Field
The invention relates to the field of pesticide spraying equipment, in particular to a pulse combustion diffuse spraying device and a flying pesticide diffuse sprayer containing the pulse combustion diffuse spraying device.
Background
For large-area agricultural crops, pesticide spraying needs to change the pesticide liquid into tiny fog liquid as far as possible, and forms a large-area covered pesticide liquid diffusing area, large-area pesticide application is carried out on the agricultural crops, currently adopted aircrafts drive pulse combustors to serve as heating sources and atomization action sources of the pesticide liquid, so that the pesticide liquid is heated by the combustors to form tiny vaporization liquid drops and is carried out by explosive airflow to form diffuse fog clusters, in the process, the heating time of the pesticide liquid needs to be controlled to avoid being overheated to be invalid, and the directional operation of the diffuse fog clusters and the influence of the explosive airflow on the flight control of the aircrafts need to be controlled.
The invention patent of application number 201110089183.5 discloses a pulse combustion driven hot water mist generation method and device, which is characterized in that liquid substances such as water or liquid medicine are led into a Laval nozzle to carry out secondary phase transformation to generate water mist and accelerate spraying, the device is characterized in that the liquid substances are led into an annular channel formed by a combustion chamber and a tail pipe directly, the liquid substances are instantaneously vaporized by high heat, and then fine liquid drops are formed in a Laval jacket at a lower temperature (the temperature in the Laval jacket is 120-130 ℃), and the mode is easy to destroy the effective components in the liquid medicine, so that the device is suitable for being used as a fire extinguishing device; when the device is used for being mounted on a rotor craft, the spray pipe needs to be mounted in a downward direction so as to avoid the influence of the sprayed high-speed air flow on the flight direction, so that the device can only be mounted in a mode of pointing to the right lower direction in work, and the directivity of the sprayed air flow is not obvious.
The invention patent with application number 0214777.4 discloses a pulse jet smoke device and a pulse smoke insect killer, which also adopt a Laval nozzle structure as a nozzle structure, a medicine path interface is arranged at the outlet end of the Laval nozzle structure, and under the condition of avoiding damage of medicine molecules, liquid medicine is driven to be sprayed out in an atomized state by high-speed air flow, but because the medicine path interface is arranged at the tail end of the Laval nozzle, the contact time between the tail gas sprayed out after being accelerated by the Laval nozzle and the medicine is too short, and the liquid medicine is heated insufficiently for only one thousandth of seconds, so that vaporization is insufficient to a certain extent, and medicine diffusion is uneven, and the liquid medicine has the defect of unobvious directivity of sprayed air flow after being installed on a rotary wing aircraft.
Disclosure of Invention
The invention aims to provide a diffuse spraying device for pulse combustion, which ensures that liquid medicines form fine liquid drops after being fully heated and vaporized, and is driven by explosive airflow to form diffuse liquid medicine smoke clusters with directivity.
In order to achieve the above purpose, the invention is implemented by adopting the following technical means: the diffuse spraying device for pulse combustion comprises a combustion chamber, an exhaust pipe arranged at an outlet of the combustion chamber, a depressurization damping shell with a gap for wrapping the combustion chamber, and a shell pipe arranged at the outlet of the depressurization damping shell and with a gap for wrapping the exhaust pipe, wherein the spraying device forms a triple branch, and a first branch is led into the exhaust pipe with a roundabout horizontal section from the combustion chamber through the outlet of the combustion chamber; the exhaust port on the outer wall of the combustion chamber is horizontally discharged to form a third branch; the first branch outlet end is higher than the second branch outlet end, and the first branch outlet end and the second branch outlet end form a mixing zone with the outlet facing downwards; the medicine way port is led to a detour horizontal section between the inner wall of the shell pipe and the outer wall of the exhaust pipe.
In the technical scheme, the combustion chamber is in a cylindrical shell shape which is horizontally arranged, the inlet and the outlet of the combustion chamber are respectively positioned on two planes of the cylinder and are concentrically arranged along the axis of the combustion chamber, and the outlet of the combustion chamber is smaller than the inlet of the combustion chamber; the exhaust pipe horizontally extends from the outlet of the combustion chamber and then is bent back to form a roundabout horizontal section, and then is bent downwards; the combustion chamber and the pressure reducing and damping shell are coaxially arranged and mutually fixed, and the exhaust pipe and the shell pipe are coaxially arranged and mutually fixed; the exhaust holes of the decompression damping shell are circumferentially distributed along the axis of the combustion chamber.
Furthermore, a plurality of annular column fixing brackets which are annularly arranged are arranged between the outer wall of the inlet of the combustion chamber and the inner wall of the inlet of the pressure reducing and damping shell, so that the combustion chamber and the pressure reducing and damping shell are mutually fixed; the horizontal section of the exhaust pipe and the horizontal section of the shell pipe are mutually fixed through a plurality of exhaust pipe fixing columns.
The invention further aims to provide a flying pesticide diffuse sprayer comprising the pulse combustion diffuse spraying device, wherein after the pulse combustion diffuse spraying device is installed on a rotor craft, the air flow exhausted by an exhaust pipe can provide lift force for the rotor craft, and meanwhile, the directional air flow exhausted by an exhaust hole of a pressure reducing and shock absorbing shell can drive diffuse combustion smoke to form directional diffuse pesticide smoke clusters, and meanwhile, normal flight of the rotor craft is not influenced, so that the device is suitable for directional pesticide application to agriculture and forestry crops in a large area.
In order to achieve the above purpose, the invention is implemented by adopting the following technical means: the utility model provides a flight pesticide diffuse spray ware, it contains above-mentioned pulse combustion's diffuse spray equipment in addition, still include oil supply unit, medicine supply unit, ignition device, casing, support, aircraft, its ignition jet pipe of ignition device and the entry of step-down shock attenuation shell are through rigid transition pipeline connection, be provided with ignition device's spark plug between the carburetor passageway export of oil supply unit and the rigid transition pipeline, the pneumatic connection of air pump and oil supply unit's fuel economizer, and through fuel economizer unidirectional gas supply to ignition device; the fuel economizer is connected with the carburetor, and the fuel tank supplies fuel to the carburetor through the fuel pump; the medicine box of the medicine supplying device supplies liquid to the medicine path interface through the medicine path pump.
In the technical scheme, the medicine path pump is a peristaltic pump, and the peristaltic pump controls the liquid pumping speed through the switching device.
Further, the oil supply device also comprises an air valve, and the air valve is controlled to be opened and closed by the switching device, so that the air pump can be opened and closed; the air pump supplies air to the ignition device in one way through a one-way valve arranged between the fuel economizer and the ignition device.
Further, the fuel economizer and the carburetor are connected with each other through a flange structure, and the elastic vibration valve plate is fixed between the flange of the fuel economizer and the flange of the carburetor.
Further, the bracket comprises a first frame-shaped bracket and a second frame-shaped bracket which are symmetrically arranged, and the medicine box and the oil tank are symmetrically arranged and the side frames of the first frame-shaped bracket and the second frame-shaped bracket are fixed through the fixing plate; the discharge pipe fixing column is provided with at least one central area which extends downwards to the first frame-shaped bracket and is mutually fixed; the damping support is bent upwards from the central area of the second frame-shaped support, extends and fixes the rigid transition pipeline, and the shell and the central area of the second frame-shaped support are mutually fixed.
Furthermore, the switch device controls the opening and closing of the air valve, the opening and closing of the drug path pump, the flow speed adjustment and the ignition flameout of the ignition device through an external remote control system.
Still further, the aircraft be the rotor craft, rotor craft bottom and first, second frame form support's roof-rack are fixed each other to through external control device control flight motion.
The invention has the following advantages:
1. the diffuse spraying device for pulse combustion forms high-heat explosive airflow in a combustion chamber, and is discharged to an exhaust pipe, an exhaust pipe and a shell pipe enclosing area and a discharge Kong Sanchong by branches after depressurization and shock absorption, so that the impact of the explosive airflow on the device is reduced in the process, and the medicine liquid is properly heated, properly accelerated and directionally discharged, so that the medicine liquid is vaporized and then forms directional diffuse medicine liquid smoke clusters along with the airflow to be discharged;
2. compared with the prior art, the flying pesticide diffuse sprayer with the pulse combustion diffuse spraying device adaptively refits the structures of a carburetor, an ignition device and a decompression damping shell, so that the flying pesticide diffuse sprayer is more suitable for the application of the equipment, and the explosion airflow formed after ignition can be smoothly discharged through triple branches without influencing the structural stability and the flying process of the equipment; the novel rotary wing aircraft has the advantages that the novel support and the novel equipment structure are adopted, so that the novel rotary wing aircraft has good intensive effect and balance on the overall stability among the shell, internal and external equipment, the pulse combustion diffuse spraying device, the aircraft and the support, does not cause operation influence on the flight process, and is suitable for replacement and assembly of various rotary wing aircraft with different specifications;
3. the peristaltic pump is adopted as a medicine feeding device, so that the controllability is high, the liquid feeding effect is uniform and stable, and the stable control effect on the output quantity of the liquid medicine is realized;
4. the flying pesticide diffuse sprayer can be mounted to a rotor craft by adopting a common fixed wing craft as a flying power source, and the impact of the explosive air flow on the device is reduced after the explosive air flow is depressurized and damped, so that the explosive air flow and the downward air flow of the rotor craft form an air flow which is directed obliquely downwards when being sprayed out from a third branch, and the explosive air flow after depressurization does not influence the flying action of the rotor craft when having a directed blowing action on diffuse liquid medicine smoke clusters.
Drawings
FIG. 1 is a schematic view of the invention in an expanded state of a housing;
FIG. 2 is a schematic partial cross-sectional view of the present invention;
FIG. 3 is a schematic view of the carburetor and economizer of the present invention;
fig. 4 is a schematic structural view of the installation aircraft of the invention.
Description of the embodiments
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1, the diffuse spraying device 1 for pulse combustion is shown, and comprises a combustion chamber 11 and an exhaust pipe 12 arranged at the outlet of the combustion chamber 11, wherein the combustion chamber 11 is in the shape of a cylindrical shell which is horizontally arranged, the diameter is 100mm, the width is 300mm, the diameter of the exhaust pipe is 30mm, and the total length is 500mm; the inlet and the outlet of the combustion chamber 11 are respectively positioned on two planes of the cylinder and are concentrically arranged along the axis of the combustion chamber 11, and the outlet of the combustion chamber 11 is smaller than the inlet of the combustion chamber 11; the exhaust pipe 12 is horizontally extended from the outlet of the combustion chamber 11, then is bent back to form a roundabout horizontal section, and is bent downwards; the pressure reducing and damping shell 13 surrounds the combustion chamber 11 with a space, and the pressure reducing and damping shell 13 and the combustion chamber 11 are coaxially arranged and fixed with each other, in the embodiment, the space between the inner wall of the pressure reducing and damping shell 13 and the outer wall of the combustion chamber 11 is 15mm; the shell pipe 14 is arranged at the outlet of the pressure reducing and shock absorbing shell 13 and wraps the exhaust pipe 12 with a space, the exhaust pipe 12 and the shell pipe 14 are coaxially arranged and mutually fixed, the space between the outer wall of the exhaust pipe 12 and the front of the inner wall of the shell pipe 14 is 15mm, and the height of the outlet of the exhaust pipe 12 is 120mm higher than that of the outlet of the shell pipe 14 and both are vertically oriented downwards; the exhaust holes 131 of the decompression damping shell 13 are circumferentially distributed along the axis of the combustion chamber 11; the medicine path port 33 is led to a detour horizontal section between the inner wall of the housing tube 14 and the outer wall of the exhaust tube 12.
By this arrangement, the combusted explosive gas flow can be discharged in triple branches in the spraying device 1, wherein the outlet from the combustion chamber 11 through the outlet of the combustion chamber 11 to the blast pipe 12 is the first branch; the gas is reversely led to the surrounding area of the outer wall of the combustion chamber 11 and the inner wall of the pressure reducing and damping shell 13 from the inlet of the combustion chamber 11, and then is shunted to the surrounding area of the outer wall of the exhaust pipe 12 and the inner wall of the shell pipe 14 to form a second shunt, and is horizontally discharged from the exhaust hole 131 on the outer wall of the combustion chamber 11 to form a third shunt; since the outlet of the stack 12 is higher than the outlet of the housing tube 14, i.e. the first branch outlet end is higher than the second branch outlet end and both form a mixing zone 15 with the outlet directed downwards; in the operation process, the oil-gas mixture in the combustion chamber 11 forms explosion gas flow after ignition, part of the explosion gas flows to the inlet of the combustion chamber 11 to reversely flow, and is shunted to the surrounding area of the outer wall of the combustion chamber 11 and the inner wall of the depressurization damping shell 13, so that the impact force of the explosion gas flow to the combustion chamber 11 and the return bending area of the exhaust pipe 12 is reduced, the gas pressure brought by the explosion gas flow in the exhaust pipe 12 is reduced to a certain extent, the spraying device 1 obtains the damping effect, in the process, the explosion gas flow in the exhaust pipe 12 fully heats the exhaust pipe 12, particularly the detour horizontal section, so that a thermal effect area is formed, and the medicine sprayed from the medicine path interface 33 can obtain the indirect first reheating effect in the thermal effect area formed by the detour horizontal section; the explosive gas flow which is split into the surrounding area of the outer wall of the combustion chamber 11 and the inner wall of the depressurization shock absorption shell 13 is split again to form a second split and a third split, and the explosive gas flows through the third split, namely is exhausted to the exhaust hole 131, so that the flow rate and the flow velocity of the gas flow flowing to the second split are reduced, the impact vibration of the explosive gas flow to the spraying device 1 is greatly reduced, and the directional explosive gas flow is brought to spraying equipment; and part of the explosive gas flowing to the second branch flows to the outlet through the surrounding area of the outer wall of the exhaust pipe 12 and the inner wall of the outer shell pipe 14, in the process, the explosive gas is shunted and decelerated through the third branch, after the back bending area of the outer shell pipe 14 is further decelerated, the explosive gas of the second branch is smaller than the flow speed of the explosive gas of the first branch, but in the process, the liquid medicine sprayed out of the medicine passage interface 33 is directly contacted with the explosive gas in the second branch, so that a second reheating effect is obtained, a first heavy gas acceleration effect is obtained, the liquid medicine obtains a direct and indirect double heating effect under the action of the explosive gas of a relatively low speed, the liquid medicine is brought out of the explosive gas of the second branch after being heated and gasified, a mixed area 15 formed at the tail end of the first branch outlet and the tail end of the second branch is converged with the explosive gas of the first branch, so that the liquid medicine obtains further acceleration and heating effect, and the diffuse liquid medicine smoke is sprayed out in a directional manner under the driving of the explosive gas of the third branch.
In order to improve the structural stability of the spraying device 1 in the operation process of the spraying device 1, a plurality of annular column fixing brackets 17 which are annularly arranged are arranged between the outer wall of the inlet of the combustion chamber 11 and the inner wall of the inlet of the pressure reduction damping shell, so that the combustion chamber 11 and the pressure reduction damping shell 13 are mutually fixed, explosion air flows reversely flow in the combustion process of the combustion chamber 11 and reversely flow to the area where the outer wall of the combustion chamber 11 with smaller space and the inner wall of the pressure reduction damping shell 13 are enclosed, and the explosion air flows bring larger impact to the inlet of the combustion chamber 11 and the inlet of the pressure reduction damping shell, and the annular column fixing brackets 17 are arranged, so that the structures of the combustion chamber 11 and the pressure reduction damping shell are more stable; also, the fixing of the exhaust pipe 12 and the horizontal section of the outer casing pipe 14 to each other by the plurality of exhaust pipe fixing posts 16 has a good effect in maintaining structural stability between the exhaust pipe 12 and the outer casing pipe 14 during the impact of the explosive gas flow.
As shown in fig. 1-3 (a part of oil supply device is omitted, and a soft conveying pipeline of a medicine supply device is omitted), the above-mentioned pulse combustion diffuse spraying device 1 is assembled with the oil supply device, the medicine supply device, an ignition device, a machine shell 2, a bracket and an aircraft to form a flying pesticide diffuse sprayer, and the spraying device has a good spraying effect on large-area agricultural and forestry crops, and in the embodiment, the following structure is adopted for setting: the carburetor 44, the fuel economizer 45, the ignition device, the drug path pump, the oil path pump 42, the air valve 47 and the switch device 5 are arranged in the machine shell 2 in a collecting way, the oil tank 41 of the oil supply device and the drug tank 31 of the drug supply device are arranged outside the machine shell 2, the ignition spray pipe 49 of the ignition device of the oil supply device is connected with the inlet of the pressure reduction damping shell 13 through the rigid transition pipeline 18 and is arranged between the machine shell 2 and the spraying device 1 as a connecting part, the ignition plug 491 of the ignition device is arranged between the rigid transition pipeline 18 and the channel outlet of the carburetor 44 of the oil supply device, and the high-pressure bag 46 supplies power to the ignition plug 491 of the ignition device for igniting; the air pump 43 is pneumatically connected with the fuel economizer 45 of the fuel supply device and supplies air to the ignition device in one way through the fuel economizer 45; the fuel economizer 45 is connected with the carburetor 44, and the fuel tank 41 supplies fuel to the carburetor 44 through the fuel pump 42; the medicine tank 31 of the medicine feeding apparatus supplies liquid to the medicine path interface 33 by the medicine path pump.
The peristaltic pump 32 is adopted as a medicine path pump, the liquid pumping speed is controlled through the switching device 5, the characteristic of stable liquid supply is realized by utilizing the characteristic that the peristaltic pump 32 adjusts the liquid supply flow rate through the rotating speed of the motor 321, and the characteristic of stable liquid supply is realized by controlling the rotating speed of the motor 321 through the switching device 5, so that the stable liquid supply flow of the peristaltic pump 32 is indirectly controlled, the liquid medicine flow flowing out of the medicine path interface 33 is kept stable and controllable in the heating and speed increasing process of explosive airflow, and the state that the liquid medicine heating effect is uncontrollable due to the change of the liquid medicine flow rate can be effectively reduced.
The oil supply device also comprises an air valve 47, wherein the air valve 47 is controlled to be opened and closed by the switch device 5, so that the air pump 43 can be opened and closed; the air pump 43 supplies air unidirectionally to the ignition device through a one-way valve arranged between the fuel economizer 45 and the ignition device, through the arrangement scheme, the air pump 43 supplies air unidirectionally to the fuel economizer 45, and the air valve 47 is controlled to be opened and closed through the switching device 5 so as to quickly realize the proceeding and stopping of the combustion process by switching on and off the air.
As shown in fig. 3, the fuel economizer 45 and the carburetor 44 are connected with each other through a flange structure, the porous elastic vibration valve plate 48 is fixed by the flange of the fuel economizer 45 and the flange of the carburetor 44, the impact force of the explosion air flow generated during ignition on the elastic vibration valve plate 48 is too large, the stable flange structure can maintain the structural stability among the carburetor 44, the fuel economizer 45 and the elastic vibration valve plate in the vibration process, and the stable speed regulation oil supply of the oil way pump 42 is matched, so that the gasoline can uniformly enter the carburetor 44 and the fuel economizer 45 after being dispersed through the porous structure and form oil-gas mixed smoke, and the oil-gas mixed smoke forms more constant explosion air flow in the combustion chamber 11 after being ignited, so that the explosion air flow is more stable and controllable.
In order to improve the weight balance and the structural stability among the bracket, the shell 2, the oil tank 41 and the medicine tank 31, the following structural arrangement is adopted in the embodiment: as shown in fig. 1 and 4, the first and second frame-shaped brackets (61, 62) are symmetrically arranged in front and rear, the medicine box 31 and the oil tank 41 are symmetrically arranged in left and right, the left side frames of the first frame-shaped bracket 61, the oil tank 41 and the second frame-shaped bracket 62 are fixed by a left side fixing plate 71, the right side frames of the first frame-shaped bracket 61, the medicine box 31 and the second frame-shaped bracket 62 are fixed by a right side fixing plate 72, the casing 2 and the air injection device are arranged in the middle, and the rear ends of the casing 2 and the air injection device are downwards extended to the connecting sheet 9 of the central area of the first frame-shaped bracket 61 through the discharge pipe fixing column 16 closest to the return bending area and are mutually fixed; the shock-absorbing bracket 82 is bent upwards from the connecting sheet 9 in the central area of the second frame-shaped bracket 62 and is used for extending and fixing the rigid transition pipeline 18, the shell 2 and the connecting sheet 9 in the central area of the second frame-shaped bracket 62 are mutually fixed, and the shock-absorbing bracket 82 can greatly absorb shock due to the large amplitude generated when the explosion air flow generated in the ignition process is ejected through the upward bending structure of the shock-absorbing bracket 82 with the bending structure, so that the vibration influence of the explosion air flow on the shell 2 and the internal components thereof can be greatly reduced.
In order to realize the control of the combustion process and the control of the drug supply process in the flying process of the flying pesticide diffuse sprayer, the switching device 5 controls the opening and closing of the air valve 47, the opening and closing of the peristaltic pump 32, the flow speed adjustment and the ignition flameout of the ignition device through an external remote control system, so that the opening and closing and the progressive adjustment of the drug application process in the flying process can be fully and effectively controlled.
The device is mounted on a fixed wing aircraft, and the directional airflow of the third branch is directed to the rear end of the flying direction, so that the effect of application can be realized, but more preferably, as shown in fig. 4, the hoverable rotor aircraft 10 is adopted as a flying power source, the directional airflow sprayed by the third branch can be better utilized, when the explosive airflow is sprayed out of the third branch, downward airflow of the rotor aircraft 10 is formed into downward airflow together with the downward airflow of the rotor aircraft 10, the diffuse liquid medicine smoke group has the directional blowing action, meanwhile, the explosive airflow after depressurization does not influence the flying action of the rotor aircraft 10, the operation effect is optimal, the rotor aircraft 10 can be almost replaced quickly with the rotor aircraft 10 which is independently operated through actual operation, the complex flying output parameter adjustment work is saved, the mounting process is simple and quick, and the bottom of the rotor aircraft 10 and the top frames of the first and the second frame-shaped brackets (61 and 62) are mutually fixed; more preferably, the flight remote control system of the rotary wing aircraft 10 is integrated with an external control device, so that the external control device can control the flight and the pesticide applying process, the operation difficulty of the remote control process can be greatly reduced, and the convenience of operating the flight pesticide diffuse sprayer is greatly improved.
Claims (9)
1. The diffuse spraying device for pulse combustion comprises a combustion chamber, an exhaust pipe arranged at an outlet of the combustion chamber, and is characterized by further comprising a depressurization damping shell and a shell pipe, wherein the depressurization damping shell is arranged at the outlet of the depressurization damping shell and is used for wrapping the exhaust pipe at intervals, the spraying device forms a triple branch, and a first branch is led into the exhaust pipe with a roundabout horizontal section from the combustion chamber through the outlet of the combustion chamber; the exhaust port on the outer wall of the combustion chamber is horizontally discharged to form a third branch; the first branch outlet end is higher than the second branch outlet end, and the first branch outlet end and the second branch outlet end form a mixing zone with the outlet facing downwards; the medicine path interface is led to a detour horizontal section between the inner wall of the shell pipe and the outer wall of the exhaust pipe;
the combustion chamber is in a cylindrical shell shape which is horizontally arranged, the inlet and the outlet of the combustion chamber are respectively positioned on two planes of the cylinder and are concentrically arranged along the axis of the combustion chamber, and the outlet of the combustion chamber is smaller than the inlet of the combustion chamber; the exhaust pipe horizontally extends from the outlet of the combustion chamber and then is bent back to form a roundabout horizontal section, and then is bent downwards; the combustion chamber and the pressure reducing and damping shell are coaxially arranged and mutually fixed, the exhaust pipe and the shell pipe are coaxially arranged and mutually fixed, and the height of the outlet of the exhaust pipe is higher than that of the outlet of the shell pipe and both are vertically oriented downwards; the exhaust holes of the decompression damping shell are circumferentially distributed along the axis of the combustion chamber.
2. The diffuse spraying device for pulse combustion according to claim 1, wherein a plurality of annular column fixing brackets which are annularly arranged are arranged between the outer wall of the inlet of the combustion chamber and the inner wall of the inlet of the pressure reduction and shock absorption shell, so that the combustion chamber and the pressure reduction and shock absorption shell are mutually fixed; the horizontal section of the exhaust pipe and the horizontal section of the shell pipe are mutually fixed through a plurality of exhaust pipe fixing columns.
3. A flying pesticide diffuse sprayer containing the pulse combustion diffuse spraying device in claim 1 or 2, which comprises a pulse combustion diffuse spraying device, an oil supply device, a drug supply device, an ignition device, a shell, a bracket and an aircraft, and is characterized in that an ignition spray pipe of the ignition device is connected with an inlet of a pressure reduction damping shell through a rigid transition pipeline, a spark plug of the ignition device is arranged between the rigid transition pipeline and a carburetor channel outlet of the oil supply device, an air pump is pneumatically connected with an oil economizer of the oil supply device, and unidirectional air supply is carried out to the ignition device through the oil economizer; the fuel economizer is connected with the carburetor, and the fuel tank supplies fuel to the carburetor through the fuel pump; the medicine box of the medicine supplying device supplies liquid to the medicine path interface through the medicine path pump.
4. A flying pesticide sprayer according to claim 3, wherein the drug path pump is a peristaltic pump, and the peristaltic pump controls the liquid pumping speed through the switching device.
5. A flying pesticide diffuse sprayer according to claim 3, wherein the oil supply device further comprises an air valve, the air valve is controlled to be opened and closed by the switching device, so that the air pump is opened and closed; the air pump supplies air to the ignition device in one way through a one-way valve arranged between the fuel economizer and the ignition device.
6. A flying pesticide sprayer according to claim 5, wherein the fuel economizer and the carburetor are connected to each other by a flange structure, and the elastic vibration valve plate is fixed between the fuel economizer flange and the carburetor flange.
7. A flying pesticide diffuser according to claim 5, wherein the support comprises first and second frame-like supports symmetrically arranged, the medicine box and the oil tank are symmetrically arranged and the side frames of the first frame-shaped bracket and the second frame-shaped bracket are fixed through the fixing plate; the discharge pipe fixing column is provided with at least one central area which extends downwards to the first frame-shaped bracket and is mutually fixed; the damping support is bent upwards from the central area of the second frame-shaped support, extends and fixes the rigid transition pipeline, and the shell and the central area of the second frame-shaped support are mutually fixed.
8. The diffuse flying pesticide sprayer according to claim 7, wherein the switch device controls the opening and closing of the air valve, the opening and closing of the drug path pump, the flow rate adjustment and the ignition flameout of the ignition device through an external remote control system.
9. A flying pesticide sprayer according to claim 8, wherein the aircraft is a rotary wing aircraft, and the bottom of the rotary wing aircraft is fixed with the top frames of the first and second frame-shaped brackets, and the flying movement is controlled by an external control device.
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| CN109329258B (en) * | 2018-12-19 | 2024-01-23 | 南京林业大学 | Pulse combustion smoke spraying system carried by unmanned aerial vehicle |
| CN109601522A (en) * | 2019-02-03 | 2019-04-12 | 南京林业大学 | The compound bird repellent method of physical chemistry based on unmanned aerial vehicle platform |
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| CN108464291A (en) | 2018-08-31 |
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