CN109187292A - A kind of device of test droplet transmitting behavior - Google Patents
A kind of device of test droplet transmitting behavior Download PDFInfo
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- CN109187292A CN109187292A CN201811089699.8A CN201811089699A CN109187292A CN 109187292 A CN109187292 A CN 109187292A CN 201811089699 A CN201811089699 A CN 201811089699A CN 109187292 A CN109187292 A CN 109187292A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Catching Or Destruction (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of devices of test droplet transmitting behavior, it include: outer housing, charging system, air devider, atomization system, axial flow blower and test macro, air devider, atomization system and axial flow blower are all set in inside outer housing, air inlet is offered on outer housing, and one end of outer housing and atomization system forms cavity, forms air exhaust passage with the other end of atomization system；Charging system is connected to by feed liquid pipe with atomization system, and air devider one end is connected with cavity, and the other end is connected with atomization system；Axial flow blower is set to the rear of cavity, and atomization system is connected by axial flow blower with air exhaust passage；Atomization system includes spray chamber and atomizer, and atomizer is set in spray chamber；Test macro is located at the spray direction of atomizer.The present invention passes through while the system and device and test method of the droplets behavior such as measure medical fluid droplet size, speed and rebound, conveniently realizes the real time measure to float of mist droplet rate.
Description
Technical field
The invention belongs to be administered field of measuring technique, more particularly to a kind of dress of test droplet transmitting behavior
It sets.
Background technique
The drift problem and droplet viscoplasticity of pesticide droplet are always one of agricultural engineering field issues that need special attention.It is real
In the operation process of border, because the pesticide droplet that drift and evaporation are lost accounts for whole sprinkling medicine drop ratio up to 50% to 70%, and
One of an important factor for mist droplet particle size size is influence float of mist droplet；In addition when droplet hits crop surface with certain speed, by
Wax coat structure and blade face difference gradient in blade face, easily cause droplet to tumble, and as a result reduce connecing for effective droplet and target
Touching reduces drug effect.Pesticide droplet partial size is the principal element for influencing pesticide deposition and distributing homogeneity on target, it is general and
Say that the suitable droplet size of spraying droplet is 150-350um, the droplet less than 150um is mist drop, and being greater than 350um is thick mist
Drop.Existing research shows that mist drips relatively crude droplet and is easier to be attached on target and be more evenly distributed, but mist drop is easy
Drift and evaporation with the wind, and although anti-drift ability is strong for thick droplet, but easily tumbles on hydrophobic target surface, and be suitble to big
Small droplet is easy to rebound and tumble from target surface under kinetic energy effect when hitting crop surface.Therefore test droplet is big
The rebound behavior of small and droplet, can effectively improve the accurate adjustment to pesticidal preparations formula system, improve pesticide utilization rate.
CN20160475271.1 discloses a kind of portable mist droplet particle size detection device and method based on image procossing,
Color spot is formed in test card using image processing techniques test landing, then droplet size is tested by image analysis technology.Because surveying
The crop surface difference of test paper and tool wax coat is big, and can sprawl after droplet engaged test paper, sprays with reality from spray head
Dynamic operation droplet differ greatly, not can accurately reflect practical droplet size；CN201510769664.9 discloses a kind of base
In the method for laser technology test spraying droplet three-dimensional space droplet, droplet size and the distribution of different cross section are tested, but from spray
What mouth sprayed is moved down by spraying with certain speed, while mist drop is also possible to form turbulent flow, causes to the test of spectrum of fog drop
Interference；CN201621481690.8 discloses droplet drift distribution situation in a kind of measurement wind-tunnel, but uses water-sensitive paper displaing color
As the method for droplet acquisition, the size for reflecting droplet that water sensitive paper can not be authentic and valid can only feed back droplet shock out
Color spot is formed after water-sensitive developing paper, while the material of water sensitive paper itself and the body surface of target have very big architectural difference, it cannot
The authentic and valid droplet that reflects is the target body surface the case where) and test the sedimentation of droplet and drift using water sensitive paper and have one
A problem is exactly that water sensitive paper is very sensitive to moisture, it is easy to which aging hypersaturated state is rarely used in wind-tunnel.It is just used in the invention
The mode of rotating contact, still there are three obvious drawback: the spray process process that is a serialization first, using rotation water-sensitive
Paper acquire this mode of flashy colour developing color spot be it is inaccurate, Pcnten-1 yne-4 is continuous when water sensitive paper is unable to measure spraying
Change data；Secondly rotation water sensitive paper be exposed to the time in droplet be difficult to control, cause water sensitive paper saturation degree be difficult to control, hold
Easily there is subsequent droplet to overlap in water sensitive paper, error occurs so as to cause the colour developing area of water sensitive paper, also do not have in the invention
It is described the time range for understanding water sensitive paper acquisition.Furthermore it is known that dry colour developing of the droplet in water sensitive paper needs centainly
Time can just be completely dried, if quickly rotating water sensitive paper after droplet contact water sensitive paper, be easy to causeing water sensitive paper surface incomplete
Dry droplet contacts wiping with the protection sponge on device, causes color spot area change, causes deviation.And this method is only capable of point
Analyse droplet drift value number, it is difficult to count the distribution of different-grain diameter in space, and can realize for large tunnel, it is inconvenient
Examination in laboratory to different pesticidal preparations formula systems or spray head etc. to droplet transmitting behavior.
Therefore, the device for how providing a kind of test droplet transmitting behavior becomes those skilled in the art's urgent need to resolve
Problem.
Summary of the invention
In view of this, the present invention provides a kind of devices of test droplet transmitting behavior, by measuring medical fluid droplet simultaneously
The system and device and test method of the droplets behavior such as size, speed and rebound, conveniently realize the reality to float of mist droplet rate
When measure, in addition it can realize that atomizer type, hydrojet flow, atomisation pressure, medical fluid type, liquor strength, environment are warm and humid
In the case of one or more changes of conditions such as degree, to the orthogonal test analysis of float of mist droplet rate.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of device of test droplet transmitting behavior, comprising: outer housing, charging system, air devider, atomization system, axis stream
Blower and test macro, wherein the air devider, the atomization system and the axial flow blower are all set in the outer housing
Portion offers air inlet on the outer housing, and one end of the outer housing and the atomization system forms cavity, with the mist
The other end of change system forms air exhaust passage；The charging system is connected to by feed liquid pipe with the atomization system, described to divide wind
Device one end is connected with the cavity, and the other end is connected with the atomization system；The axial flow blower is set to the cavity
Rear, the atomization system are connected by the axial flow blower with the air exhaust passage；The atomization system include spray chamber and
Atomizer, the atomizer are set in the spray chamber；The test macro is located at the spray direction of the atomizer.
Preferably, further include air compressor machine and accumulator tank, the air compressor machine successively with the accumulator tank, the feed liquid pipe, institute
Atomizer is stated to be connected.After air compressor machine pressurizes, medical fluid is atomized through atomizer in charging system, is contacted with the air of fair current, downlink
Form spraying taper covering of the fan.
Preferably, the air compressor machine uses screw-rod air compressor.Using screw-rod air compressor, output pressure that can be stable
Power, screw-rod air compressor can effectively reduce 30% or more electric power, and noise compared with common piston type air compressor
Low, vibration very little, facilitates the stable operation of the precision instrument of whole system, and electric efficiency is high, the energy saving space is big.
It preferably, further include temperature sensor and humidity sensor, the temperature sensor and the humidity sensor are equal
It is set in the air exhaust passage, and the temperature sensor and the humidity sensor are electrically connected with controller.It can lead to
The temperature that controller adjusts whole system is crossed, for simulating the variation of temperature under Different climate environment；It can be adjusted by controller
The humidity for saving whole system, for simulating the variation of humidity under Different climate environment.
Preferably, high frame rate video camera is installed in the spray chamber, the high frame rate position for video camera in test macro with
Between the atomizer.High frame rate video camera shoots the fan-shaped surface that nozzle sprays, and can get droplet size and atomization speed, mist
Drip it is too small will form continuous fan-shaped surface, excessive to will form discontinuous face, this can reflect that pesticidal preparations are matched to a certain extent
Otherness between side can also test the influence that different surfaces activating agent forms droplet velocities and size.
Preferably, the test macro includes laser emitter and laser pickoff, the laser emitter and described is swashed
Optical receiver is respectively in the two sides of the spray chamber, and is oppositely arranged；Laser emitter and laser pickoff bottom end are provided with can
Mobile bracket, can be along movable supporting frame automatic position adjusting function.Laser emitter issues laser beam, passes through range of atomization, is connect by laser
It receives device and receives signal, droplet size and distribution are known after via controller processing, by adjusting laser emitter and laser pickoff
Test particle size data in different location section calculates the relative size of evaporation capacity.
Preferably, the outer housing bottom end is provided with waste liquid bleed outlet, can be sprayed atomizer by waste liquid bleed outlet
Liquid is discharged by outer housing.
Preferably, manhole is offered on the outer housing, the maintenance hole site is corresponding with the spray chamber, and institute
It states and lid is installed on manhole.The setting of manhole carries out replacement and repair, maintenance convenient for the component of external enclosure interior
Lid is installed on hole, ensure that the leakproofness of outer housing.
Preferably, the air inlet is equipped with plate, passes through plate adjusting air inlet amount.
Preferably, the percent opening of the air devider is 95%, wind direction can be made to be uniformly distributed, improve the stabilization of air-flow
Property.
The beneficial effects of the present invention are:
The present invention is carried out temperature and humidity regulation and glitch-free laser testing droplet size and is divided by separate space
Cloth is able to reflect field climatic environment locating for droplet in actual use；And spray chamber is isolated with tester, can guarantee to survey
Try personnel safety；
It is adjusted by axial flow blower and is adjusted with the consistent circulated air of droplet traffic direction and wind speed, simulate airplane spray process
The wind pressure that middle vane is formed, it is not only high with actual production similarity, and reduce the turbulent flow that mist drop generates and droplet size is surveyed
Fixed influence；
Droplet through open type cycle air exhaust passage Liang Ge corner, is undergoing speed change and is changing direction, and droplet gathers and at bulky grain,
It punishes and separates at turning, the influence because of test to tester and environment of reduction；
Test macro can get in droplet transmittance process in the cross section of droplet different location test droplet size and distribution
The difference of Size, while can derive the size of droplet evaporation capacity, have to the quick screening of pharmaceutical formulation biggish practical
Property；
The fan-shaped surface that nozzle sprays is shot using high frame rate video camera, can get droplet size and atomization speed, droplet
Too small to will form continuous fan-shaped surface, excessive to will form discontinuous face, this can reflect pesticidal preparations formula to a certain extent
Between otherness, the influence that different surfaces activating agent forms droplet velocities and size can also be tested；
Using test macro and the joint debugging translocation of high frame rate video camera, can improve to pesticide solution interface data and droplet dispersion
The disposable acquisition precision of regular data, while reducing systematic error caused by multiple measurement respectively；
It can adjust corresponding different atomisation pressures using air compressor machine and accumulator tank, mist gone out by high frame rate video camera testing
The speed data of drop and by test system and test mist droplet particle size distributed data, and via high frame rate video camera and laser particle size
After the associated computer acquisition droplet velocities of instrument and particle size data, obtained by operation, it is automatic to export medical fluid drift rate.
To test out the droplet for adding different viscoelastic agents drop rebound rate after the shock on blade face.High frame rate video camera is to mist
Drop hits target surface shooting, can get droplet rebound degree, is beneficial to test different pesticidal preparations formulas, especially menu
The performance difference of face activating agent, the rebound time is shorter, or the speed of rebound droplet is slower, indicates that auxiliary agent viscoplasticity is better.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 attached drawing is main view of the invention.
Fig. 2 attached drawing is top view of the invention.
Wherein, in figure,
1- outer housing；2- charging system；3- air devider；4- atomization system；41- spray chamber；42- atomizer；5- axis stream wind
Machine；6- test macro；61- laser emitter；62- laser pickoff；63- movable supporting frame；7- air inlet；8- cavity；9- row
Wind channel；10- feed liquid pipe；11- air compressor machine；12- accumulator tank；13- temperature sensor；14- humidity sensor；15- controller；
16- high frame rate video camera；17- waste liquid bleed outlet；18- manhole；19- lid.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Attached drawing 1-2 is please referred to, the present invention provides a kind of devices of test droplet transmitting behavior, comprising: outer housing 1 adds
Material system 2, air devider 3, atomization system 4, axial flow blower 5 and test macro 6, wherein air devider 3, atomization system 4 and axis stream wind
Machine 5 is all set in inside outer housing 1, air inlet 7 is offered on outer housing 1, and outer housing 1 and one end of atomization system 4 are formed
Cavity 8 forms air exhaust passage 9 with the other end of atomization system 4；Charging system 2 is connected to by feed liquid pipe 10 with atomization system 4,
3 one end of air devider is connected with cavity 8, and the other end is connected with atomization system 4；Axial flow blower 5 is set to the rear of cavity 8, mist
Change system 4 is connected by axial flow blower 5 with air exhaust passage 9；Atomization system 4 includes spray chamber 41 and atomizer 42, atomizer 42
It is set in spray chamber 41；Test macro 6 is located at the spray direction of atomizer 42.
Between 0.5 meter to 3 meters of height of spray chamber 41, preferably 1.5 meters, wind turbine apparatus has the reasonable guiding device of design,
It to solve the problems, such as the turbulent of tunnel airstream, is designed using 41 structure of spray chamber, realizes the effective of test simulation and tester
Isolation, during solving pesticide atomization measure, the injury that the medical fluid containing certain toxicity is likely to cause tester, and
And equipment itself can carry out the detection of multinomial data simultaneously, testing result has guidance meaning to comprehensive analysis medical liquid atomizing characteristic
Justice.The rational mixture that pharmaceutical agent combinations determined by application scheme are carried out to simulation actual use scene, using every detection data,
It can help we have found that the change that the droplet transfer performance of medical fluid occurs under high concentration, the progress tank-mix adjuvants of adaptation to local conditions
After addition, it is ensured that the accurate transmitting for flying anti-equal ultrahigh concentrations medical fluid improves the transmission efficiency of pesticide, promotes the hair of drug effect
It waves.
The invention also includes air compressor machine 11 and accumulator tank 12, air compressor machine 11 successively with accumulator tank 12, feed liquid pipe 10, atomizer
42 are connected.After the pressurization of air compressor machine 11, medical fluid is atomized through atomizer 42 in charging system 2, is contacted with the air of fair current, downlink shape
At spraying taper covering of the fan.
In order to further optimize the above technical scheme, air compressor machine 11 uses screw-rod air compressor.The atomization that the present invention controls
Pressure limit exists: 0-1.3MPa, and the air compressor machine 11 that can choose has piston type air compressor, screw-rod air compressor, twin-screw pneumatics
Machine, permanent-magnetic variable-frequency air compressor machine, oilless air compressor etc., the preferred screw-rod air compressor of the present invention, output pressure that can be stable, screw rod
Formula air compressor machine can effectively reduce 30% or more electric power, and low noise, vibration compared with common piston type air compressor
Very little facilitates the stable operation of the precision instrument of whole system, and electric efficiency is high, and the energy saving space is big.
In addition, the liquid tank of switching with pressure can be used in charging system 2 of the invention, user can test a sample
While, prepare another sample, guarantees an efficient test request.
The invention also includes temperature sensor 13 and humidity sensor 14, temperature sensor 13 and humidity sensor 14 are all provided with
It is placed in air exhaust passage 9, and temperature sensor 13 and humidity sensor 14 are electrically connected with controller 15,13 He of temperature sensor
Such as there is biggish temperature and humidity primarily to keeping the temperature and humidity environment of entire air ducting system consistent as far as possible in humidity sensor 14
Variation, we will stop testing, and axial flow blower 5 realizes airflow circulating, and system idle running to temperature and humidity is made to reach equilibrium-like
State.The temperature that whole system can be adjusted by controller 15, for simulating the variation of temperature under Different climate environment；In axis stream
Having heaters is used to improve system temperature before blower 5, and air inlet 7, which connects cold wind unit, to be used to reduce temperature, the control model of temperature
It is trapped among between 5 DEG C -50 DEG C.The humidity of whole system can be adjusted by controller 15, it is wet under Different climate environment for simulating
The variation of degree.Dynamic dehumidifier is connected in air inlet 7 to control humidity in spray booth, and humidity range controls between 5%-90%.
Temperature and humidity is controlled using controller, simulates the environment temperature of different regions, set temperature range；Corresponding humidity, if
Determine humidity range.Once system starts running, according to the requirement of set environment, by control of temperature and humidity in OK range.
High frame rate video camera 16 is installed, high frame rate video camera 16 is located at test macro 6 and atomizer 42 in spray chamber 41
Between, high frame rate video camera 16 is realized angle adjustment using bracket and the pedestal comprising clouds terrace system and is moved left and right, in favor of
The droplet spray pattern of shooting crawl different parts.Atomizer 42 uses modular nozzle, can install common all types of
Number plant protection nozzle, such as Fan spray head, conical nozzle, centrifugal energy nozzle, for simulating the difference selected under different work scene
Spray head.High frame rate video camera 16 shoots the fan-shaped surface that nozzle sprays, and can get droplet size and atomization speed, the too small meeting of droplet
Continuous fan-shaped surface is formed, excessive to will form discontinuous face, this can reflect the difference between pesticidal preparations formula to a certain extent
The opposite sex can also test the influence that different surfaces activating agent forms droplet velocities and size.
Test macro 6 includes laser emitter 61 and laser pickoff 62, and laser emitter 61 and laser pickoff 62 divide
The two sides of spray chamber 41 are listed in, and are oppositely arranged；Laser emitter 61 and 62 bottom end of laser pickoff are provided with movable supporting frame
63, it can be along 63 automatic position adjusting function of movable supporting frame.Test macro 6 is mobile to complete transmitting terminal and receiving end by guide rail 63
It precisely aligns, guarantees that laser power meets test request enough, to improve measuring accuracy, laser particle analyzer is mounted on removable branch
On frame upper bracket, and there is no physical connection with spray chamber 41, equipment shakes the influence to detection accuracy when eliminating system operation,
There is setting yielding rubber pad between movable supporting frame and ground, it is therefore intended that eliminate earth shock caused by equipment and be transferred to test
System 6 causes test error, and for the test on droplet vertically height, then mainly by the adjustment up and down of atomizer 42 come real
Existing.
Laser emitter 61 issues laser beam, passes through range of atomization, signal is received by laser pickoff 62, at via controller 15
Droplet size and distribution are known after reason, by adjusting laser emitter 61 and laser pickoff 62 in the test in different location section
The relative size of particle size data calculating evaporation capacity.
1 bottom end of outer housing is provided with waste liquid bleed outlet 17, the liquid that can be sprayed atomizer 42 by waste liquid bleed outlet 17
It is discharged by outer housing 1.
Manhole 18 is offered on outer housing 1,18 position of manhole is corresponding with spray chamber 41, and installs on manhole 18
There is lid 19.The setting of manhole 18 is installed on manhole 18 convenient for carrying out replacement and repair to the component inside outer housing 1
There is lid 19, ensure that the leakproofness of outer housing 1.
In order to further optimize the above technical scheme, air inlet 7 is equipped with plate, passes through plate adjusting air inlet amount.
In order to further optimize the above technical scheme, the percent opening of air devider 3 is 95%, wind direction can be made to be uniformly distributed,
Improve the stability of air-flow.
Fresh wind enters spray chamber 41 through air devider 3 from air inlet 7, and through 5 extraction system of axial flow blower, wind speed passes through axis stream
The revolving speed of blower 5 realizes wind speed: the adjusting of 0-30m/s, and the present invention is the low-speed wind tunnel in pesticide spray field；The present invention uses
Axial fan 5, the blower fan structure of the structure type is simple, solid and reliable, at low cost, low in energy consumption, rapid heat dissipation, low noise,
The advantages that energy conservation and environmental protection, axial flow blower 5 are generally used for that traffic requirement is higher and the lower occasion of pressure requirements.With common centrifugation
Formula blower compares, and the axis of 5 wind direction of axial flow blower and fan blade is equidirectional air-flow, does not change the flow direction of medium in air hose, therefore
Air-flow is more stable when advancing.Axial flow blower 5 of the invention, by model investigation, is determined on the basis of similar product
Blower blade profile uses cylinder type wheel hub structure, while to motor having carried out Transform Type design, reduces flow losses, thus
Improve fan efficiency, noise is lower, and enhances the intensity at blade root, avoids leaf destruction phenomenon.By glass steel material
Manufacture, metal parts spray erosion resistant coating, each position of blower can be effectively prevent to be corroded, and meet wanting by spraying for pesticide droplet
Ask, can conveyer belt contain acidic and alkaline gas and high humility gas.
The present invention is carried out temperature and humidity regulation and glitch-free laser testing droplet size and is divided by separate space
Cloth is able to reflect field climatic environment locating for droplet in actual use；And spray chamber 41 is isolated with tester, can be guaranteed
Tester's safety.
It is adjusted by axial flow blower 5 and is adjusted with the consistent circulated air of droplet traffic direction and wind speed, simulate airplane spray mistake
The wind pressure that vane is formed in journey, it is not only high with actual production similarity, and reduce the turbulent flow of mist drop generation to droplet size
The influence of measurement；
Droplet undergoes speed change and changes direction, droplet is poly- and at big through 9 Liang Ge corner of open type cycle air exhaust passage
Grain is punished at turning and is separated, the influence because of test to tester and environment of reduction；
Test macro 6 can get droplet transmittance process in the cross section of droplet different location test droplet size and distribution
The difference of middle Size, while can derive the size of droplet evaporation capacity, there is biggish reality to the quick screening of pharmaceutical formulation
The property used；
The fan-shaped surface that nozzle sprays is shot using high frame rate video camera 16, can get droplet size and atomization speed, mist
Drip it is too small will form continuous fan-shaped surface, excessive to will form discontinuous face, this can reflect that pesticidal preparations are matched to a certain extent
Otherness between side can also test the influence that different surfaces activating agent forms droplet velocities and size；
Using test macro 6 and the 16 joint debugging translocation of high frame rate video camera, can improve to pesticide solution interface data and droplet
The disposable acquisition precision of Dispersion rules data, while reducing systematic error caused by multiple measurement respectively；
It can adjust corresponding different atomisation pressures using air compressor machine 11 and accumulator tank 12, surveyed by high frame rate video camera 16
Try out the speed data of droplet and mist droplet particle size distributed data tested by test macro 6, and via high frame rate video camera and
After the associated computer acquisition droplet velocities of laser particle analyzer and particle size data, obtained by operation, it is automatic to export medical fluid drift rate.
To test out the droplet for adding different viscoelastic agents drop rebound rate after the shock on blade face.High frame rate video camera 16 is right
Droplet hits target surface shooting, can get droplet rebound degree, is beneficial to test different pesticidal preparations formulas, especially function
The performance difference of surfactant, the rebound time is shorter, or the speed of rebound droplet is slower, indicates that auxiliary agent viscoplasticity is better.
Test droplet experiment is carried out using the device of the invention, wherein device parameter are as follows: the wind speed 0-30m/S of circulation；Temperature
Degree: 5 DEG C -50 DEG C；Humidity: 5%-90%；Atomisation pressure: 0-1.3MPa.
Experiment 1
25 degree of temperature, relative humidity 70%, it is 7 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is U.S. Teejet110-03
Fan-shaped pressure nozzle, medical fluid pressure tank 0.5MPa, 10% cyhalofop-butyl EC are diluted to 750 times, and addition polysorbas20, test difference add
The droplet size of dosage is shown in Table 1.
Table 1 adds different auxiliary agent spraying droplet particle diameter distributions
The addition of Small molecular surfactant is easy to increase small size droplet quantity, by test data can Continuous Particle Size
Mean data has obvious correlation with particle size distribution range data, is consistent with theory.The quantity of small size droplet increases and mist
The reduction for dripping average speed, promotes droplet drift rate to steeply rise, this illustrates that the equipment passes through measurement mist droplet particle size and speed
It is consistent to the determination data of float of mist droplet rate with actual measurement observation situation, and the equipment can convert data value for drift rate.
Experiment 2
30 degree of temperature, relative humidity 80, it is 5 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is U.S. Teejet110-15 fan
Shape pressure nozzle, medical fluid pressure tank 0.4MPa, 10% cyhalofop-butyl EC are diluted to 750 times, add hydroxypropyl guar gum, test is not
With the droplet size of additive amount, data output the results are shown in Table 2.
The distribution of 2 guar gum Different adding amount spraying droplet of table and rebound
The addition of high molecular polymer can be good at controlling small droplet generation of the mist droplet particle size lower than 150um, so that mist
The overall distribution of drop becomes larger, the performance generated with good inhibition easily drift droplet；The addition of high molecular polymer, effectively
Reduce the generation of blade face rebound phenomena.Equipment can acquire in real time mist droplet particle size and droplet velocities number in a spray process
According to, and it is converted into real-time droplet rebound rate, consecutive sample values may be output as average rebound rate.
Experiment 3
33 degree of temperature, relative humidity 55, it is 3 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is Germany Lecheler80-015
Conic nozzle, medical fluid pressure tank 0.8MPa, 34% Envidor SC are diluted to 4000 times, add PVP-VA64 (ethenyl pyrrolidone
Ketone and vinyl acetate co-polymer), the droplet viscoplasticity of Different adding amount is tested, data output the results are shown in Table 3.
Table 3, which adds viscoplasticity auxiliary agent, improves the droplet rebound time
The addition of high-molecular copolymer increases mist droplet particle size integrally, reduces droplet drift rate, and provides medical fluid mist
Good viscous-elastic behaviour is dripped, the medical fluid rebound time is shortened, effectively reduces the generation of blade face rebound phenomena, reduce medical fluid
A possibility that loss.Equipment can measure droplet average speed and droplet bounce time in a spray process, help to integrate
The relationship analyzed and researched between droplet velocities and droplet rebound can avoid systematic error caused by repeatedly measuring respectively.
Experiment 4
10 degree of temperature, relative humidity 50, it is 5 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is Germany Lecheler120-03
The anti-spray head that floats of sector, medical fluid pressure tank 0.6MPa, 20% etoxazole SC are diluted to 2000 times, add the third hydroxyl melon rubber, test
The droplet viscoplasticity of Different adding amount, is shown in Table 4
The distribution of 4 guar gum Different adding amount spraying droplet of table and rebound
High molecular polymer, which is added with, to be conducive to control small droplet and generates and reduce drop rebound, can be with from the above test result
Find out, which outputs the Pcnten-1 yne-4 of droplet average speed, different particle size distribution range by a mist measuring respectively
Rate and corresponding droplet rebound rate.
Experiment 5
40 degree of temperature, relative humidity 20, it is 0.5 meter per second that axial flow blower, which adjusts wind speed, and nozzle is Italy ARAG120-05
Fan spray head, medical fluid pressure tank 0.3MPa, 0.5MPa, 0.6MPa are tested respectively, and the parallel wetting and spreading that compares improves auxiliary agent SP-
408 (SINVO modified organic silicons) increase medical fluid adherency and retention volume auxiliary agent SP-116B (SINVO high molecular polyether), droplet grain
Diameter controls analog assistant SP-4506 (SINVO methylation prosparol), tests different extension rate medical fluids in droplet infall process
The rate and change of size of middle droplet, by once spraying, it is that medical fluid drift rate data is shown in that measurement, which acquires multinomial data and exports,
Table 5
Table 5 adds different auxiliary agent spraying droplet particle diameter distributions
Switching is supplied using the medicine liquid tank of test equipment, atomisation pressure can be switched under continuous measuring state, pass through valve
Men Yike carries out convenient handover operation to medical fluid kind to be measured.By a kind of the continuous spraying of medical fluid in the above detection, can obtain
Obtaining the full item data of its particle diameter distribution, droplet velocities data, and output is droplet drift rate and rebound rate data.From the above number
It can be seen that the promotion with atomisation pressure in, the trend of reduction is presented in the particle diameter distribution of multiple-medicinal-liquid, has partial size control
The auxiliary agent SP-4506 of production has the effect for the mist droplet particle size that improves significantly, and significant under the conditions of same atomisation pressure
Medical fluid drift rate is reduced, has the auxiliary agent SP-116B for improving medical fluid adherency and liquid holdup function in same atomisation pressure condition
Under, have the function of significantly reducing drop rebound rate, it is possible to reduce medical fluid rebound is lost.
Experiment 6
45 degree of temperature, relative humidity 85, it is 28 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is UAV centrifugal energy nozzle, medical fluid
Pressure tank 1.2MPa, 2.5% penoxsuam OD are diluted to 1000 times, add Silwet 408 (organosilicon auxiliary agent), test is not
With the distribution of droplet in the droplet infall process of additive amount, detection data is shown in Table 6
Table 6 adds different auxiliary agent spraying droplet particle diameter distributions
Promote the auxiliary agent 408 of wetting and spreading under specific additive amount, tool is significantly reduced the effect of medical liquid surface tension,
The test under thermal extremes super-humid conditions, is tested under high-speed flow again using UAV swirl atomizer, droplet movement velocity, grain
The data of diameter distribution, and output float of mist droplet rate value and droplet is averaged rebound rate data.
Experiment 7
35 degree of temperature, relative humidity 80, it is 10 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is that P20 extremely flies UAV centrifugation spray
Head, medical fluid pressure tank 0.1MPa, 25% pymetrozine SC are diluted to 2000 times, and (organic silicon methyl esters oil helps addition dragonfly sudden -2
Agent), the distribution of droplet in the droplet infall process of Different adding amount is tested, is shown in Table 5
Table 7 adds different auxiliary agent spraying droplet particle diameter distributions
Gram victory dragonfly fly here -2 auxiliary agents be it is a kind of fly anti-builder with mist droplet particle size control action, the experiment utilize
Fly to prevent it is nozzle specially used, tested under the conditions of high wind speed low liquid stream centrifugal spray mist droplet particle size distribution and express delivery speed, pass through
Primary spraying, equipment outputs material drift rate and rebound rate data, illustrates that the addition of the sudden auxiliary agent of dragonfly is obviously improved
The ratio of effective biological partial size, and the drift rate of medical fluid and rebound rate be decreased significantly.
Experiment 8
20 degree of temperature, relative humidity 60, it is 20 meter per seconds that axial flow blower, which adjusts wind speed, and nozzle is the spray of big boundary G-15UAV pressure
Head, medical fluid pressure tank 0.6MPa, 30% indoxacarb SC are diluted to 2000 times, and sudden -1 (the lecithin analog assistant) of addition dragonfly is surveyed
The rebound for trying droplet in the droplet infall process of Different adding amount, is shown in Table 5
Table 8 adds the anti-rebound auxiliary agent droplet rebound time
The experiment is typical for the medical fluid droplet evaluation test for flying anti-usage scenario, using big boundary G-15UAV pressure
Spray head tests influence of the lecithin analog assistant of Ke Sheng company offer to droplet behavior, test data under conventional atomisation pressure
The auxiliary agent is shown under the conditions of nozzle appropriate and atomisation pressure, has the function of being obviously improved effectively biological particle size range,
And medical fluid droplet drift rate is significantly reduced, since this analog assistant has effects that promote medical fluid adherency simultaneously and withholds, because
This can be seen that the auxiliary agent with certain viscous-elastic behaviour from the droplet rebound time, can be rebounded and is lost with effectively preventing medical fluid.
Test result is consistent with the theory of the auxiliary agent function
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of device of test droplet transmitting behavior characterized by comprising outer housing, charging system, air devider, atomization
System, axial flow blower and test macro, wherein the air devider, the atomization system and the axial flow blower are all set in institute
It states inside outer housing, air inlet is offered on the outer housing, and one end of the outer housing and the atomization system forms sky
Chamber forms air exhaust passage with the other end of the atomization system；The charging system is connected by feed liquid pipe and the atomization system
Logical, described air devider one end is connected with the cavity, and the other end is connected with the atomization system；The axial flow blower is set to
The rear of the cavity, the atomization system are connected by the axial flow blower with the air exhaust passage；The atomization system packet
Spray chamber and atomizer are included, the atomizer is set in the spray chamber；The test macro is located at the spray of the atomizer
Mist direction.
2. it is according to claim 1 it is a kind of test droplet transmitting behavior device, which is characterized in that further include air compressor machine and
Accumulator tank, the air compressor machine are successively connected with the accumulator tank, the feed liquid pipe, the atomizer.
3. a kind of device of test droplet transmitting behavior according to claim 2, which is characterized in that the air compressor machine uses
Screw-rod air compressor.
4. a kind of device of test droplet transmitting behavior according to claim 1, which is characterized in that further include temperature sensing
Device and humidity sensor, the temperature sensor and the humidity sensor are all set in the air exhaust passage, and the temperature
Degree sensor and the humidity sensor are electrically connected with controller.
5. a kind of device of test droplet transmitting behavior according to claim 1 or 4, which is characterized in that the spray chamber
High frame rate video camera is inside installed, the high frame rate position for video camera is between test macro and the atomizer.
6. a kind of device of test droplet transmitting behavior according to claim 1, which is characterized in that the test macro packet
Laser emitter and laser pickoff are included, the laser emitter and the laser pickoff are respectively in the two of the spray chamber
Side, and be oppositely arranged.
7. a kind of device of test droplet transmitting behavior according to claim 1, which is characterized in that the outer housing bottom end
It is provided with waste liquid bleed outlet.
8. a kind of device of test droplet transmitting behavior according to claim 1 or claim 7, which is characterized in that the outer housing
On offer manhole, the maintenance hole site is corresponding with the spray chamber, and is equipped with lid on the manhole.
9. a kind of device of test droplet transmitting behavior according to claim 1, which is characterized in that the air inlet installation
There is plate.
10. a kind of device of test droplet transmitting behavior according to claim 1, which is characterized in that the air devider
Percent opening is 95%.
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| CN110006614A (en) * | 2019-02-01 | 2019-07-12 | 北京农业智能装备技术研究中心 | A kind of monitoring system and method for aerial pesticide medical fluid droplet cloud cluster drift trend in aerial pesticide |
| CN113625807A (en) * | 2021-09-07 | 2021-11-09 | 上海领奢广告有限公司 | Temperature and humidity control system for indoor spray painting |
| CN117147391A (en) * | 2023-10-27 | 2023-12-01 | 北京市农林科学院智能装备技术研究中心 | Device and method for monitoring drug delivery drift |
| CN117282113A (en) * | 2023-11-24 | 2023-12-26 | 德州蓝力生物技术有限公司 | Albumin peptide production device and process |
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