CN108499763A - Static nozzle - Google Patents
Static nozzle Download PDFInfo
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- CN108499763A CN108499763A CN201810601585.0A CN201810601585A CN108499763A CN 108499763 A CN108499763 A CN 108499763A CN 201810601585 A CN201810601585 A CN 201810601585A CN 108499763 A CN108499763 A CN 108499763A
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- nozzle
- outlet tube
- drop
- atomizer
- gas
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- 230000003068 static effect Effects 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims description 42
- 239000007921 spray Substances 0.000 claims description 28
- 238000005507 spraying Methods 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 37
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000004110 electrostatic spray deposition (ESD) technique Methods 0.000 abstract 1
- 238000000889 atomisation Methods 0.000 description 20
- 239000002245 particle Substances 0.000 description 18
- 238000005520 cutting process Methods 0.000 description 13
- 239000003595 mist Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 6
- 239000000575 pesticide Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002663 nebulization Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009688 liquid atomisation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- RTKIYNMVFMVABJ-UHFFFAOYSA-L thimerosal Chemical compound [Na+].CC[Hg]SC1=CC=CC=C1C([O-])=O RTKIYNMVFMVABJ-UHFFFAOYSA-L 0.000 description 1
- 229940033663 thimerosal Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
Abstract
The present invention relates to atomizer more particularly to static nozzles；Including atomizer, the electrode and power supply that are arranged on atomizer, one end of the power supply is connected with electrode, the other end is grounded；The average grain diameter of the atomized drop of the atomizer is 30 120 μm, and the voltage of the electrode is 1000 6500V.The static nozzle of the present invention effectively reduces equipment cost, improves electrostatic spray deposition adsorption effect.
Description
Technical field
The present invention relates to atomizer more particularly to static nozzles.
Background technology
Atomizer generally includes two kinds of single fluid atomizer and Double-fluid atomization nozzle.It is with single fluid atomizer
Example, is widely used in medical industry, agricultural, environmental protection industry, operation principle is usually：Liquid is sent by pump pressurization
Then nozzle sprays from the aperture of nozzle, makes the liquid atomization into tiny drop.Its atomization characteristics depends on operating pressure and spray
The aperture of head, the in general higher spray orifice of the pressure difference inside and outside pore is smaller, and the drop of atomization is thinner, and the distribution of particle is more equal
It is even；Otherwise the lower spray orifice of pressure difference is bigger, and the drop of atomization is bigger, and the distribution of particle is more uneven.
Static nozzle is that positive or negative high-pressure electrostatic is connected on nozzle, and the droplet that nozzle sprays is made to carry and nozzle
The identical or different charge of polarity.After droplet is ejected, makees directed movement under electrostatic field and be adsorbed on object.It is high
Pressure electrostatic Spraying technique, which has many advantages, such as that deposition is high, sprinkling dead angle is few, saves pesticide, water source and environmental pollution, to be reduced.However,
It should be pointed out that the charge-mass ratio of the voltage of high-pressure electrostatic, the grain size of electrostatic spray and droplet how is controlled, to save
Balance is obtained in equipment cost and raising spray effect, becomes the technological core of static nozzle.
Invention content
In order to solve the above technical problems, effectively reducing equipment cost, raising electrostatic the object of the present invention is to provide a kind of
Mist deposits the static nozzle of adsorption effect.
The static nozzle of the present invention, including atomizer, the electrode and power supply that are arranged on atomizer, the electricity
The one end in source is connected with electrode, the other end is grounded；The average grain diameter of the atomized drop of the atomizer is 30-120 μm, described
The voltage of electrode is 1000-6500V.
Further, the average grain diameter of the atomized drop of the atomizer is 50-90 μm.
Further, the voltage of the electrode is 2000-4500V.
Further, the charge-mass ratio of the atomized drop of the atomizer is more than 1.4mc/kg.
It should be noted that atomizer generate atomization droplets diameter it is smaller, when encounter external environment it is more severe when,
If wind-force is larger, environment temperature is higher, drop will be caused to occur the case where evaporation, drift during push, influences sprinkling effect
Fruit.Therefore, further, the auxiliary wind of the air curtain for generating package sprinkling atomized drop is additionally provided on the atomizer
Send unit.Relatively simple, it is the wind turbine being arranged on rear side of nozzle body or other ventilation apparatus that auxiliary wind, which send unit, is passed through
The axis stream wind that wind turbine (or other ventilation apparatus) generates send atomized drop package wind.Alternatively, it is that setting exists that auxiliary wind, which send unit,
Auxiliary air port on the outside of atomizer, auxiliary air port is connected with gas pressurized equipment, by forming cyclic annular or fan-shaped air curtain,
Atomized drop wind is sent.
Further, the atomizer includes nozzle body, air knife component and the end cap in nozzle body,
The outlet tube road for spraying atomized drop is provided in the nozzle body, the end cap surrounds in outlet tube terminal portion at gas
Room is simultaneously provided with nozzle corresponding with outlet tube road end position on it, and the air knife component in gas chamber for forming
The air-flow between outlet tube terminal portion and nozzle is sprayed, the nozzle is used to spray drop and gas.
Specifically, the aperture of the liquid outlet in outlet tube terminal portion is r, between outlet tube terminal portion and nozzle
Spacing is d, and the ratio of the d and r are 1:2 to 1.5:1.
It should be noted that with the increase of r and d, the grain size for spraying drop also gradually increases, when r increases to certain journey
When spending, the liquid that outlet tube road sprays is essentially water column, even if increasing the pressure of air-flow, it is also difficult to liquid is fully cut, it can not
Form atomized drop.In order to form the water mist of enough small particles, such as it is less than 150 μm, then the ranging from 0.75-1.25mm of the r,
The ranging from 0.75-1.25mm of d.
Simplify design air knife component to realize, further, the air knife component includes being set in nozzle body
And it for the gas grooves of input gas, the air flue for guiding gas flow into gas chamber and is set on the inside of end cap and is used for
Gas from gas grooves is reflected into the inclined-plane to outlet tube terminal portion.
It should be noted that the static nozzle of the present invention by gas grooves and need to can provide mesohigh gas when in use
Equipment is connected, such as air compressor；Outlet tube road is connected with output system liquid to be sprayed, such as liquid case and water pump.
The grain size for spraying drop is related with following factor：1) aperture of outlet tube terminal portion fluid hole；2) pressure inside and outside outlet tube road
Difference, i.e., it is related with the output pressure of water pump；3) gas is to the cutting effect of drop, and cutting effect by air pressure size and
Gas guiding is played in influence of the gas to the cutting angle of drop with the output pressure of air compressor and plenum interior
Structure is related.It is fixed in nozzle arrangements, in use, can be by adjusting water pump and air compressor or other gas supply
The output pressure of equipment or component, to obtain the atomized drop of different-grain diameter.
Further, cambered surface is additionally provided between inclined-plane and nozzle on the inside of the end cap.
It slides to form gas wrapping layer it should be noted that cambered surface can allow swirling eddy smoothly to prolong inner wall, protects atomized liquid
Body is pushed to nozzle direction, and inner cavity is made to dry, and is avoided hydrops interference air-flow or is caused electric pole short circuit.Such as without cambered surface, gas will
Multi-layer convection is formed in gas chamber, leads to liquid portion deposition gas chamber interior walls, atomized drop jet length is made to shorten.Due to cambered surface
Radian will influence to prolong the flow direction of inner wall air-flow, when radian is larger, air-flow inversely will mutually be cut with the drop of injection, it is difficult to shape
At gas wrapping layer, when radian is smaller, air-flow can not prolong inner wall movement well, but reflect to liquid line end,
And then form multi-layer convection.Therefore, specifically, the arc range of the cambered surface is 1.047-2.093rad.
It should be noted that since outlet tube road is inevitably set as prominent structure in gas chamber, portion gas exists
By the outer wall on directive outlet tube road after inclined-plane refraction, in order to avoid rebound is formed air-flow back and forth between inclined-plane and outlet tube outer wall
Multi-layer convection, further, the end set on the outlet tube road is round table-like.
In order to improve foregoing advantages, specifically, the taper of the round table-like part in outlet tube road is 1：30—1：4.
The atomized drop sprayed in order to prevent pools the drop of greater particle size at nozzle, even pools stream, into
One step, the nozzle includes inner segment and outer segment, and the internal diameter of the outer segment gradually increases from the inside to the outside.Relatively simple, it is described
The longitudinal section of nozzle outer segment is sector.
According to the above aspect of the present invention, the present invention has at least the following advantages：By adding electrode on atomizer, to suitable grain
The atomized drop of diameter carries out high-pressure electrostatic processing and makes its electrification, has the advantages that following 4：1) electrostatic atomization size droplet diameter smaller
And uniformly；2) drop strong adhesive force, deposition is big on Target crops and is evenly distributed；3) pesticide utilization rate is high；4) operation is imitated
Rate higher.Under the action of assisting air conveying device, the wind of atomized drop send distance to effectively improve.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, below with presently preferred embodiments of the present invention and after coordinating attached drawing to be described in detail such as.
Description of the drawings
Fig. 1 be in first embodiment of the invention it is charged with it is non-it is charged under the conditions of lateral mist droplet particle size be distributed；
Fig. 2 be in first embodiment of the invention it is charged with it is non-it is charged under the conditions of longitudinal mist droplet particle size be distributed；
Fig. 3 is the sectional view of static nozzle in the present invention；
Fig. 4 is the stereogram of static nozzle in the present invention；
Fig. 5 is the stereogram of nozzle body in the present invention；
Fig. 6 is the partial enlarged view in the portions A in Fig. 3.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Embodiment one
As shown in Figures 3 to 6, a preferred embodiment of the present invention provides a kind of static nozzle, including atomizer, setting exist
Electrode 5 on atomizer and power supply；It should be noted that electrostatic atomization drop spray effect, mainly by grain size with
And the influence of charge-mass ratio, wherein the grain size of atomized drop is mainly influenced by atomizer structure, and charge-mass ratio is mainly by electricity
The influence of pole structure and electrode voltage, at the same time, the atomized drop of identical charge-mass ratio, grain size is bigger, required electricity
Pole tension is also higher.It should be noted that charge-mass ratio is the ratio between carrying capacity Q and atomized drop quality m, it is to weigh the charged effect of droplet
The important indicator of fruit.
Annular or other, which can be used, in electrode 5 can form the variously-shaped electrode of closed loop, and access height by connecting line 51
Volt circuit, the other end ground connection of high-tension circuit, since the voltage of electrode during the induction charging is higher, atomizer main body knot
Structure uses high pressure resistant insulation engineering material, such as tetrafluoroethene, nylon, to ensure the safety of induction charging effect and atomizer
Property.
In view of spray effect, the wind of atomized drop send the factors such as distance, the sprayed atomized liquid of atomizer of the invention
The parameter request of drop is 30-120 μm of average grain diameter, and the lower grain size dispersion the better.Under practical application scene, atomized drop grain
(it is less than 30 μm) when diameter is too small, drop is greatly reduced after spraying with windage generation evaporation, spray effect；Atomized drop
(it is higher than 120 μm) when too big, can not realizes saving liquid, to improve the effect of drop sprinkling, meanwhile, drop is too big, identical
The required voltage of drop of charge-mass ratio is also higher, and equipment cost is too big.
About the structure of atomizer, subsequent embodiment of the present invention will provide a kind of solution technical solution, and the present embodiment is not
It repeats again, all atomizers for being that by the parameter request should all fall into protection scope of the present invention.
1, the charged relationship with mist droplet particle size
In order to compare electrostatic with it is non-electrostatic under the conditions of mist droplet particle size size and its distribution, the present embodiment using phase it is how general
Particle analyzer (ranging from 0.5~13000 μm of grain size test) is strangled to test mist droplet particle size.In test, selection and spray
Mist field center line is perpendicular and is the Measure section of 300mm at a distance from nozzle, and it is Measure section and spray flow field to measure line then
Vertical intermediate cross-section intersection.
As a result as depicted in figs. 1 and 2, mutually isostructural atomizer, it is non-it is charged under the conditions of droplet cross direction profiles be averaged grain
Diameter is 108.48 μm, the coefficient of variation 11.96%；Under the conditions of charged, droplet cross direction profiles average grain diameter is 83.67 μm, is become
Different coefficient is 7.48%.It is non-it is charged under the conditions of, droplet genesis analysis average grain diameter be 97.61 μm, Cv 10.31%；Charged
Under the conditions of, droplet genesis analysis average grain diameter is 78.46 μm, Cv 10.02%.It is indicated above that compared with non-charged condition, lotus
Under electric condition mist droplet particle size smaller and be distributed it is more uniform.
2, the relationship of voltage and droplet charge-mass ratio
In order to detect the charge-mass ratio relationship of different voltages and atomized drop, use faraday's bucket method to atomized liquid in the present invention
Drop carries out charge-mass ratio measurement.The results are shown in Table 1, under not higher than 6500V voltages, with increasing for voltage, same particle size
The charge-mass ratio that droplet obtains is bigger；Under identical voltage, mist droplet particle size is bigger, and the charge-mass ratio of acquisition is gradually reduced.For average grain
The atomized drop of 30-120 μm of diameter, voltage are that can obtain the electrostatic spray of higher charge-mass ratio, most within the scope of 2000-4500V
Big value appears near 3500V, and when effectively spraying, the maximum charge-mass ratio of droplet can reach 2.92mc/kg.
According to table 1 as a result, and spray effect, the wind of atomized drop is combined to send the factors such as distance, the atomization of atomizer
The optimal average grain diameter of drop is 50-90 μm.The voltage of electrode is 2000-4500V.
Droplet charge-mass ratio comparing result under 1 different-grain diameter of table and voltage conditions
3, in order to further obtain compared with distant location electrostatic Pcnten-1 yne-4 information, RTss424 type Malvern laser grains are selected
Spectrometer (1~1500 μm of grain size test scope) tests mist droplet particle size.In test, fixed laser grain spectrometer determines position one
It sets, the machine is fixed on experiment guide rail, mobile the machine is to adjust spout at a distance from laser grain spectrometer.Test result such as table 2
It is shown, it is seen that the charge-mass ratio of electrostatic droplet is bigger, and the distance effectively sprayed is remoter, and droplet loss late is lower, the deposition of droplet
Effect is better.The charge-mass ratio of the atomized drop of atomizer is more than 1.4mc/kg, and optimal is more than 2mc/kg.
The different charge-mass ratio electrostatic droplets of table 2 spray distance results
4, auxiliary wind is sent
Atomizer generate atomization droplets diameter it is smaller, when encounter external environment it is more severe when, as wind-force is larger, ring
Border temperature is higher, and drop will be caused to occur the case where evaporation, drift during push, influence spray effect；In this regard, atomization spray
The auxiliary wind that the air curtain for generating package sprinkling atomized drop is additionally provided on head send unit.Relatively simple, auxiliary wind is sent
Unit is made of wind turbine or other air feed air feed equipments and the ventilating duct being placed in outside nozzle.By axial flow blower in the course of work
The high-speed flow of generation pushes droplet to fly to target by ventilating duct, the space motion speed of charged droplets is improved, to increase
The penetrability of droplet；Axial flow can play the role of disturbing branches and leaves, can make the blade face both sides of crop that can cover medicine-feeding
Liquid further increases the deposition of liquid droplet.
Embodiment two
1, the basic structure of atomizer
As shown in Figures 3 to 6, the present embodiment provides a kind of atomizers, including nozzle body 2, air knife component and peace
End cap 1 in nozzle body 2, is provided with the outlet tube road 4 for spraying drop in nozzle body 2, and end cap 1 is by outlet tube
Terminal portion surrounds into gas chamber 3 and is provided with nozzle 11 corresponding with outlet tube road end position on it, and air knife component is used for
Injection is formed in gas chamber to the air-flow between outlet tube terminal portion and nozzle, nozzle is used to spray drop and gas；Air knife
Component include be set in nozzle body 2 and for into gas chamber input gas gas grooves 21, for guiding gas flow
It air flue 13 and is set on the inside of end cap and for the gas from gas grooves to be reflected to the inclined-plane 12 to outlet tube terminal portion.
The gas piping connector being connected with gas grooves, the liquid line being connected with outlet tube road are provided in nozzle body
Connector, in order to prevent the impurity in gas or liquid block outlet tube road, can also connect in gas piping connector, liquid line
Filter device is arranged in fitting end.
The mounting means of the static nozzle of the present invention need to compress the equipment that can provide mesohigh gas or component such as air
Machine is connected on gas piping connector, and output system such as water pump liquid to be sprayed are connected on liquid line connector,
Water pump is connected on case liquid to be sprayed.
It should be noted that the usage scenario of nozzle is not limited to, for example, can be applied to the pesticide spraying in agricultural, answer
For thimerosal sprinkling in the medical liquid atomizing environment disinfected in pharmaceutical production processing or the extinguishing chemical in fire-fighting equipment
Sprinkling etc..It in the present embodiment, is only described further with the sprinkling of pesticide in agricultural, other application scene repeats no more.
Specifically, the static nozzle of the present invention can be mounted on the mechanical arm of agricultural machinery equipment such as working truck,
The gas piping connector of atomizer is connected with air compressor by hose, by liquid line connector by water pump with
Medicine-chest is connected.It is fixed in nozzle arrangements, it can be by the output pressure of adjusting water pump and air compressor, to obtain
The atomized drop of different-grain diameter and different sprinkling distances, realize the spraying operation of pesticide.
Inclined-plane 12 on the inside of gas chamber front end, that is, end cap need to be arranged and can reflect the gas from gas grooves to outlet tube road
The position of end carries out cutting mist in the end on outlet tube road in this way, refraction forms air knife after spraying high-pressure gas to droplet
Change.When bevel angle is too small, gas is swept along drop and is gone out, and can not play the role of cutting drop, when bevel angle is excessive
When, gas is reflected from inclined-plane, larger resistance is not only fed back to air compressor, while finally also will be in a manner of sweeping along drop
Go out from nozzles spray.
2, influence of the bevel angle to atomization droplets diameter
Atomized drop is measured in horizontal and vertical grain size using Winner318B laser particle size analyzers, to ensure
Laser particle size analyzer is fixed on determining position by the measuring precision, and nozzle is fixed on holder, and holder can be laterally accurate
It is mobile, the position of line is measured to adjust nozzle relative to laser particle size analyzer, the initial position of nozzle is positioned at laser particle size point
Analyzer emits at the surface 400mm with receiving terminal centre position, using nozzle initial position as coordinate origin, establishes X-Y plane
Rectangular coordinate system.Since nebulization region is symmetrical with Y-axis, research atomized drop cross direction profiles need to only select nebulization region on the left of Y-axis
Measurement selects 4 each coordinate points for nozzle transfer point in X-axis positive direction every 100mm, you can obtains 4 on the left of nebulization region
Each cross measure point.For the longitudinal atomization droplets diameter distribution of research, 4 each coordinate points are selected from bottom to up every 100mm in Y-axis
For nozzle transfer point, you can obtain 4 each longitudinal measurement points.
In order to detect under different bevel angles, to spraying the cutting effect of drop, the major parameter of atomizer is air-flow：
The aperture r of the liquid outlet in outlet tube terminal portion is 1mm, and the internal diameter on the inside of nozzle is 2mm, and outlet tube terminal portion is at a distance from nozzle
D is 1mm, and the output pressure on outlet tube road is 1.2Mpa, pressure-air output pressure 2.5Mpa.
Using aforementioned test methods, different bevel angle α are adjusted, the results are shown in Table 3, if bevel angle α is excessive, i.e. gas
Stream tend to drop sprinkling direction it is parallel when, air knife can not to drop cut be atomized, if bevel angle is too small, i.e., air-flow tend to
Drop sprinkling direction is vertical or even reverse, leads to not cut atomization to drop.At the same time, under the action of inclined-plane, one
Divide air-flow to prolong beveled walls and form eddy flow, until nozzle outlet portion forms package to the droplet after atomization, forward with cutting steam
Push forms wind and send effect, and spraying distance is made to increase.
Specifically, when bevel angle is 25-70 °, the effect of the atomized drop of atomizer has substantially exceeded currently
Existing atomizer on the market, when bevel angle is 40-60 °, effect is preferable, can most of air-flow be refracted to out liquid
It is atomized at pipe ends, when bevel angle is 50 °, can be taken in atomized drop average grain diameter and atomized drop ratio part
It obtains and preferably balances, best results.Moreover, it is noted that by taking bevel angle is 40 ° as an example, even if there is 32% drop
Not atomization completely, but found through measuring, for average grain diameter still less than 120 μm, this data is much better than existing atomization spray
Head.
Cutting effect of the different bevel angles of table 3 to drop
| Bevel angle α | 20° | 25° | 40° | 50° | 60° | 70° | 75° |
| Atomized drop average grain diameter | 130μm | 95μm | 65μm | 70μm | 72μm | 110μm | 154μm |
| Non- atomized drop ratio | 81% | 68% | 32% | 15% | 12% | 46% | 73% |
3, influences of the spacing d between the aperture r of liquid outlet, outlet tube terminal portion and nozzle to drop atomizing effect
In order to detect the spacing d between different outlet tube terminals portion and nozzle, air-flow is to the cutting effect of ejection drop, mist
Change nozzle major parameter be：The aperture r of the liquid outlet in outlet tube terminal portion is 1mm, and the internal diameter on the inside of nozzle is 2mm, goes out liquid
The output pressure of pipeline is 1.2Mpa, and pressure-air output pressure 2.5Mpa, bevel angle α are 50 °.
Outlet tube terminal portion and nozzle distance d are adjusted, the results are shown in Table 4, it is seen that when outlet tube terminal portion and nozzle
Distance d become hour, due to air knife with to spray drop contact insufficient, make partial drop grain size although can increase and cut intensity
Become smaller, but the ratio of non-atomized drop also can accordingly increase.In view of under practical application scene, when atomization droplets diameter is too small
(being less than 30 μm), drop are greatly reduced after spraying with windage generation evaporation, spray effect；When atomized drop is too big
(being higher than 90 μm), it can not realize saving liquid, to improve the effect of drop sprinkling, meanwhile, if drop is too big, if keeping drop logical
Induction charging is crossed, to improve adsorption effect, realizes that process is also relatively difficult, equipment requirement is higher.Thus, optimal outlet tube
Terminal portion is 0.75-1.25mm with nozzle distance d.
The different outlet tube terminal portions of table 4 at a distance from nozzle under drop atomizing effect compare
| d(mm) | 0.25 | 0.5 | 0.75 | 1 | 1.25 | 1.5 | 1.75 |
| Atomized drop average grain diameter | 18μm | 30μm | 45μm | 70μm | 90μm | 150μm | 220μm |
| Non- atomized drop ratio | 72% | 46% | 22% | 15% | 10% | 8% | 3% |
In order to detect different outlet tube terminals portion liquid outlet aperture r, air-flow to spray drop cutting effect, atomization
The major parameter of nozzle is：Outlet tube terminal portion is 1mm with nozzle distance d, and the internal diameter on the inside of nozzle is 2mm, outlet tube road
Output pressure be 1.2Mpa, pressure-air output pressure 2.5Mpa, bevel angle α are 50 °.
The aperture r of the liquid outlet in outlet tube terminal portion is adjusted, the results are shown in Table 5, it is seen that when going out for outlet tube terminal portion
The aperture r of liquid mouth becomes hour, and the grain size of atomized drop is not substantially reduced, but fountain height but significantly reduces, equipment cost
The case where increasing, while being also easy to happen blocking, when the aperture r of the liquid outlet in outlet tube terminal portion becomes larger, atomized drop
Although grain size becomes smaller to a certain extent, non-atomized drop ratio also will increase, while also occur that wind pressure valve nozzles
Phenomenon, for this purpose, the output pressure that will have no alternative but increase outlet tube road.
In conjunction with table 4 and table 5, it is seen that the hole in outlet tube terminal portion and the liquid outlet in nozzle distance d Yu outlet tube terminal portion
The ratio of diameter r is 1:2 to 1.5:1, optimal is 3:4 to 4:5；If being accurate to range, the ranging from 0.5-1.5mm of r, the model of d
It encloses for 0.5-1.5mm.Optimal, the ranging from 0.75-1.25mm of the ranging from 0.75-1.25mm of r, d.
Drop atomizing effect compares under the aperture of the liquid outlet in the different outlet tube terminals of table 5 portion
| r(mm) | 0.25 | 0.5 | 0.75 | 1 | 1.25 | 1.5 | 1.75 |
| Atomized drop average grain diameter | 77μm | 75μm | 73μm | 70μm | 62μm | 51μm | 40μm |
| Non- atomized drop ratio | 11% | 12% | 13% | 15% | 21% | 34% | 45% |
4, influence of the end cover structure to drop atomizing effect
In order to further increase spray effect, 1 inside of end cap is additionally provided with cambered surface 14 between inclined-plane 12 and nozzle 11.
Cambered surface 14 can allow swirling eddy smoothly to prolong inner wall and slide to form gas wrapping layer, and protection atomized liquid is pushed to nozzle direction, and
So that inner cavity is dried, avoid hydrops interference air-flow or causes electric pole short circuit.Such as without cambered surface, gas will form multilayer pair in gas chamber
Stream, leads to liquid portion deposition gas chamber interior walls, atomized drop jet length is made to shorten.
Mainly join to detect different cambered surfaces to spraying the cutting effect of drop and the effect of sprinkling, setting atomizer
Number is：The aperture r of the liquid outlet in outlet tube terminal portion is 1mm, and outlet tube terminal portion is 1mm, nozzle inside with nozzle distance d
Internal diameter be 2mm, the output pressure on outlet tube road is 1.2Mpa, and pressure-air output pressure 2.5Mpa, bevel angle α are 50 °.
Since the radian of cambered surface will influence to prolong the flow direction of inner wall air-flow, when radian is larger, air-flow by inversely with injection
Drop is mutually cut, it is difficult to form gas wrapping layer, when radian is smaller, air-flow can not prolong inner wall movement well, but roll over
Directive liquid line end, and then form multi-layer convection；
Concrete outcome is as shown in table 6, and it is control group that radian, which is 0, in table, when cambered surface is arranged between inclined-plane and nozzle,
With the increase of cambered surface, the average grain diameter of atomized drop and non-atomized drop ratio, there is no by more significant impact,
Only after radian is higher than 2.1, since air-flow is inversely mutually cut with drop, there is more significant difference.
Drop atomizing effect compares under 6 cambered surface difference radian of table
5, influence of the outlet tube road end shape to drop atomizing effect
Since outlet tube road is inevitably set as prominent structure in gas chamber, portion gas will be penetrated after inclined-plane refraction
Go out liquid to the outer wall on outlet tube road in order to avoid rebound forms multi-layer convection to air-flow back and forth between inclined-plane and outlet tube outer wall
The end 41 of pipeline 4 is set as round table-like, optimal, as shown in fig. 6, being set as multistage round table-like, in this way, part can be made anti-
The air-flow reduction for being mapped to outlet tube terminal portion outer wall is directly reflected back inclined-plane, and guides the air-flow to be formed to nozzle direction, more preferably
Outside push droplet, in addition also reduce surface area and volume as far as possible, increase gas chamber volume, so that more high pressure gas ginsengs
With atomization.
In order to detect the different tapers of the round table-like part of liquid pipeline, to spraying the cutting effect of drop, setting atomization spray
Head major parameter be：The aperture of the liquid outlet in outlet tube terminal portion is 1mm, and outlet tube terminal portion is 1mm with nozzle distance d,
Internal diameter on the inside of nozzle is 2mm, and the output pressure on outlet tube road is 1.2Mpa, pressure-air output pressure 2.5Mpa, the angle of chamfer
It is 50 ° to spend α, and the cambered cambered surface for being 1.5 is arranged between inclined-plane and nozzle.In order to easy to detect, the taper of multistage round platform is consistent.
The results are shown in Table 7, and it is control group that taper, which is 0, in table, that is, is not provided with the atomizer of round platform.When in outlet tube
When the end set round platform of road, with the gradual increase of round platform taper, the average grain diameter of atomized drop tapers into, non-atomized drop
Ratio tails off, but after taper increases to certain numerical value, since air-flow rebound is tended to and is sprayed by outlet tube terminal portion's outer wall
Drop is parallel, influences cutting effect of the air knife to drop, thus atomized drop average grain diameter is caused to increase, non-atomized drop ratio
Increase.
Drop atomizing effect compares under 7 outlet tube road difference taper of table
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of static nozzle, it is characterised in that：Including atomizer, the electrode and power supply that are arranged on atomizer, institute
The one end for stating power supply is connected with electrode, other end ground connection；The average grain diameter of the atomized drop of the atomizer is 30-120 μm,
The voltage of the electrode is 1000-6500V.
2. static nozzle according to claim 1, it is characterised in that：The average grain diameter of the atomized drop of the atomizer
It is 50-90 μm.
3. static nozzle according to claim 1, it is characterised in that：The voltage of the electrode is 2000-4500V.
4. static nozzle according to claim 1, it is characterised in that：It is additionally provided on the atomizer for generating packet
The auxiliary wind for wrapping up in the air curtain of sprinkling atomized drop send unit.
5. static nozzle according to claim 1, it is characterised in that：The atomizer includes nozzle body, air knife group
Part and the end cap in nozzle body are provided with the outlet tube road for spraying atomized drop in the nozzle body,
Outlet tube terminal portion is surrounded into gas chamber and is provided with spray corresponding with outlet tube road end position on it by the end cap
Mouth, the air knife component are used to be formed injection in gas chamber to the air-flow between outlet tube terminal portion and nozzle, and the nozzle is used
It is sprayed in by drop and gas.
6. static nozzle according to claim 5, it is characterised in that：The aperture of the liquid outlet in outlet tube terminal portion is
R, the spacing between outlet tube terminal portion and nozzle are that the ratio of d, the d and r are 1:2 to 1.5:1.
7. static nozzle according to claim 6, it is characterised in that：The ranging from 0.75-1.25mm of the r, the range of d
For 0.75-1.25mm.
8. static nozzle according to claim 5, it is characterised in that：The air knife component includes being set in nozzle body
And it for the gas grooves of input gas, the air flue for guiding gas flow into gas chamber and is set on the inside of end cap and is used for
Gas from gas grooves is reflected into the inclined-plane to outlet tube terminal portion.
9. static nozzle according to claim 8, it is characterised in that：On the inside of the end cap between inclined-plane and nozzle also
It is provided with cambered surface.
10. static nozzle according to claim 5, it is characterised in that：The end set on the outlet tube road is round table-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810601585.0A CN108499763A (en) | 2018-06-12 | 2018-06-12 | Static nozzle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810601585.0A CN108499763A (en) | 2018-06-12 | 2018-06-12 | Static nozzle |
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Family
ID=63403097
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| CN201810601585.0A Pending CN108499763A (en) | 2018-06-12 | 2018-06-12 | Static nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395906A (en) * | 2018-12-19 | 2019-03-01 | 济南大学 | Adapt to the Venturi effect static nozzle and pesticide spraying device of crops sprinkling |
| CN111888510A (en) * | 2020-07-22 | 2020-11-06 | 青岛巉山环保科技有限公司 | Electrostatic aerosol spray disinfection machine and working method thereof |
| CN112604837A (en) * | 2020-12-24 | 2021-04-06 | 中国船舶重工集团长江科技有限公司 | Spray head capable of secondary atomization |
| CN113414020A (en) * | 2021-05-19 | 2021-09-21 | 山东省农业机械科学研究院 | Gas-liquid two-phase high-voltage electrostatic spray head and spray device |
| CN113646269A (en) * | 2019-03-29 | 2021-11-12 | 株式会社Ihi | Ozone water production device, ozone water production method, ozone water treatment device, and evaluation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343433A (en) * | 1977-09-29 | 1982-08-10 | Ppg Industries, Inc. | Internal-atomizing spray head with secondary annulus suitable for use with induction charging electrode |
| CN87205509U (en) * | 1987-12-02 | 1988-10-26 | 中国农业科学院植物保护研究所 | Agricultural hand-operated spray |
| WO1997004876A1 (en) * | 1995-07-26 | 1997-02-13 | University Of Georgia Research Foundation, Inc. | Electrostatic nozzles for abrasive and conductive liquids |
| CN102500487A (en) * | 2011-11-20 | 2012-06-20 | 江苏博际环境工程科技有限公司 | Far-range conical pneumatic nozzle |
| CN203860309U (en) * | 2014-06-19 | 2014-10-08 | 新疆农垦科学院 | Liquid atomization spraying charging device |
| CN104399613A (en) * | 2014-11-24 | 2015-03-11 | 江苏大学 | Air-assisted type sector-shaped electrostatic nozzle |
| CN204544524U (en) * | 2015-03-02 | 2015-08-12 | 农业部南京农业机械化研究所 | A kind of two wind send orchard electrostatic sprayer |
| CN208661447U (en) * | 2018-06-12 | 2019-03-29 | 静快省（苏州）智能科技有限公司 | Static nozzle |
-
2018
- 2018-06-12 CN CN201810601585.0A patent/CN108499763A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4343433A (en) * | 1977-09-29 | 1982-08-10 | Ppg Industries, Inc. | Internal-atomizing spray head with secondary annulus suitable for use with induction charging electrode |
| CN87205509U (en) * | 1987-12-02 | 1988-10-26 | 中国农业科学院植物保护研究所 | Agricultural hand-operated spray |
| WO1997004876A1 (en) * | 1995-07-26 | 1997-02-13 | University Of Georgia Research Foundation, Inc. | Electrostatic nozzles for abrasive and conductive liquids |
| CN102500487A (en) * | 2011-11-20 | 2012-06-20 | 江苏博际环境工程科技有限公司 | Far-range conical pneumatic nozzle |
| CN203860309U (en) * | 2014-06-19 | 2014-10-08 | 新疆农垦科学院 | Liquid atomization spraying charging device |
| CN104399613A (en) * | 2014-11-24 | 2015-03-11 | 江苏大学 | Air-assisted type sector-shaped electrostatic nozzle |
| CN204544524U (en) * | 2015-03-02 | 2015-08-12 | 农业部南京农业机械化研究所 | A kind of two wind send orchard electrostatic sprayer |
| CN208661447U (en) * | 2018-06-12 | 2019-03-29 | 静快省（苏州）智能科技有限公司 | Static nozzle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109395906A (en) * | 2018-12-19 | 2019-03-01 | 济南大学 | Adapt to the Venturi effect static nozzle and pesticide spraying device of crops sprinkling |
| CN113646269A (en) * | 2019-03-29 | 2021-11-12 | 株式会社Ihi | Ozone water production device, ozone water production method, ozone water treatment device, and evaluation method |
| CN111888510A (en) * | 2020-07-22 | 2020-11-06 | 青岛巉山环保科技有限公司 | Electrostatic aerosol spray disinfection machine and working method thereof |
| CN111888510B (en) * | 2020-07-22 | 2023-08-29 | 青岛巉山环保科技有限公司 | Electrostatic aerosol spray sterilizer and working method thereof |
| CN112604837A (en) * | 2020-12-24 | 2021-04-06 | 中国船舶重工集团长江科技有限公司 | Spray head capable of secondary atomization |
| CN112604837B (en) * | 2020-12-24 | 2024-01-26 | 中国船舶重工集团长江科技有限公司 | Spray head capable of secondary atomization |
| CN113414020A (en) * | 2021-05-19 | 2021-09-21 | 山东省农业机械科学研究院 | Gas-liquid two-phase high-voltage electrostatic spray head and spray device |
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