CN202420888U - Device for measuring mist quantity space distribution of variable sprayed mist - Google Patents
Device for measuring mist quantity space distribution of variable sprayed mist Download PDFInfo
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- CN202420888U CN202420888U CN 201120565057 CN201120565057U CN202420888U CN 202420888 U CN202420888 U CN 202420888U CN 201120565057 CN201120565057 CN 201120565057 CN 201120565057 U CN201120565057 U CN 201120565057U CN 202420888 U CN202420888 U CN 202420888U
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Abstract
A device for measuring mist quantity space distribution of variable sprayed mist comprises a mist spraying unit and a mist quantity collection unit. The mist spraying unit is used for spraying liquid. The mist quantity collection unit comprises a mist collection tank, a covering plate with a slit and a measurement container, wherein the covering plate is located at the upper portion of the mist quantity collection tank, the measurement container is located at the lower portion of the mist quantity collection tank, liquid on the mist quantity collection tank flows to the measurement container at the lower portion of the mist quantity collection tank through tank holes on the mist quantity collection tank, and the covering plate moves on the mist quantity collection tank to measure mist quantity at different positions on a mist spraying surface. According to the device for measuring the mist quantity space distribution of the variable sprayed mist, the covering plate with the slit moves on the mist collection tank to measure mist quantity at different positions on the mist spraying surface. In addition, mist quantity distribution diagrams of the variable sprayed mist in two-dimensional space and three-dimensional space can be established to visually display the mist quantity, so that a method and a basis are provided for evaluation of the pesticide spraying effect.
Description
Technical field
The utility model belongs to the spray technique field, specially refers to a kind of measurement mechanism of mist quantity space distribution of variable rate spray.
Background technology
Mist amount distribution situation is one of important parameter index of weighing atomization quality, and it directly influences possibility and the accuracy that arrives target behind the pesticide application, is the important evidence that improves the pesticide application utilization factor.The method that has many measurement mist amounts to distribute both at home and abroad, but adopt collection mist groove mostly as the receiving trap of measuring shower nozzle spraying distributing homogeneity.Through facts have proved; The classic method of measuring mist amount distribution situation is having certain limitation aspect the test comparison; Problem is test findings and the warranty test accuracy how to unify to obtain under the distinct methods, is difficult to the mist amount that comparison records and distributes under distinct methods and condition.For the accuracy of warranty test test, various test methods and means of testing should have unitarity and standard, to eliminate the deviation that different test conditions and human factor are brought to test result.The measurement mechanism that carries out one dimension mist amount at present mainly comprises collection mist groove, sprayer unit and measuring cup; Sprayer unit is to carrying out spraying liquid on the collection mist groove; Come measurement data through measuring cup; Thereby be used for analyzing the spraying abundance on the correspondence position, the measurement of the only suitable one dimension mist amount of this device can't be satisfied the measurement of multidimensional mist amount.
The spray pesticide process is a dynamic spatially-distributed processes; Having the certain thickness material that sprays covers with certain uniformity coefficient; Actual mist amount distribution situation in the one dimension mist amount distribution situation not illustrative spray process also far away; Need further deeply probe into it, thereby reference is provided for agriculture dispenser.
The utility model content
The technical matters that (one) will solve
The technical matters that the utility model will solve is: existing spraying measurement mechanism can only be fit to the measurement of one dimension mist amount, can not understand the actual mist quantity space distribution situation in the spray process, can't accomplish accurately to spray medicine.
(2) technical scheme
In order to solve the problems of the technologies described above the measurement mechanism that the utility model provides a kind of mist quantity space of variable rate spray to distribute.
Wherein, Said device comprises sprayer unit and mist amount collector unit; Said sprayer unit is used for spraying liquid, and said mist amount collector unit comprises collection mist groove, the cover plate that has the slit and measuring vessel, and said cover plate is positioned at the top of collection mist groove; Said measuring vessel is positioned at the bottom of collection mist groove; The liquid that said sprayer unit sprays flows in the collection mist groove through the slit on the cover plate, and the liquid on the collection mist groove flow in the measuring vessel of bottom through the slotted eye on it, and said cover plate is through moving the mist amount of diverse location on the spraying face of measurement on collection mist groove.
Preferably, on the said cover plate slit around be provided with baffle plate, be used to prevent that the outer spray film of measurement range from flowing in the slit.
Preferably, the height of said baffle plate is 1～4 centimetre.
Preferably, the width in slit is 1～5 centimetre on the said cover plate.
Preferably, the width in slit is 2 centimetres on the said cover plate.
Preferably; Said sprayer unit comprises air pump, gas-holder, pressure control unit, fluid reservoir, proportional valve control unit and nozzle; Said pressure control unit is used for controlling the gaseous tension of gas-holder, and said proportional valve control unit is used to control the flow of nozzle, and said gas-holder communicates with fluid reservoir; Be used for pressure being provided, thereby the liquid in the fluid reservoir is gone out from nozzles spray with certain pressure to fluid reservoir.
(3) beneficial effect
Technique scheme has following advantage: the spraying measurement mechanism of the utility model is through being provided with the cover plate in slit on collection mist groove; Utilize cover plate on collection mist groove, to move the mist amount of diverse location on the spraying face of measurement; Can set up variable rate spray comes intuitively visual at two-dimensional space and three-dimensional space-time mist amount distribution plan; Method with visualized graphs can be to the carrying out spatial analysis of visual pattern more of variable rate spray mist quantity space distribution; The progress of Along with computer technology and the development of modeling algorithm; The method can be used as prediction and analyzes a kind of effective analytical approach spray mist quantity space distribution characteristics, thereby method and foundation is provided for the pesticide application effect assessment.
Description of drawings
Fig. 1 is the overall schematic of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of a kind of embodiment of the utility model;
Fig. 3 is the synoptic diagram of the spraying face of a kind of embodiment of the utility model;
Fig. 4 is the sampled point synoptic diagram of a kind of embodiment of the utility model;
Fig. 5 is a 3-D space-time spraying distribution modeling stacking method synoptic diagram;
Fig. 6 (a) is a kind of 2-D spray model embodiment of the utility model, and dutycycle is the two-dimentional mist amount distribution schematic diagram of 50% spraying;
Fig. 6 (b) is a kind of 2-D spray model embodiment of the utility model, and dutycycle is the two-dimentional mist amount distribution schematic diagram of 60% spraying;
Fig. 6 (c) is a kind of 2-D spray model embodiment of the utility model, and dutycycle is the two-dimentional mist amount distribution schematic diagram of 70% spraying;
Fig. 6 (d) is a kind of 2-D spray model embodiment of the utility model, and dutycycle is the two-dimentional mist amount distribution schematic diagram of 80% spraying;
Fig. 7 (a) is a kind of 3-D spray model embodiment of the utility model, and dutycycle is 80% spraying, the three-dimensional mist amount distribution schematic diagram that stack is spaced apart 2cm;
Fig. 7 (b) is a kind of 3-D spray model embodiment of the utility model, and dutycycle is 80% spraying, the three-dimensional mist amount distribution schematic diagram that stack is spaced apart 4cm;
Fig. 7 (c) is a kind of 3-D spray model embodiment of the utility model, and dutycycle is 80% spraying, the three-dimensional mist amount distribution schematic diagram that stack is spaced apart 6cm;
Fig. 7 (d) is a kind of 3-D spray model embodiment of the utility model, and dutycycle is 80% spraying, the three-dimensional mist amount distribution schematic diagram that stack is spaced apart 8cm.
Wherein, 100: sprayer unit; 101: air pump; 102: pressure control valve; 103: pressure control unit; 104: gas-holder; 105: fluid reservoir; 106: proportioning valve; 107: the proportional valve control unit; 108: nozzle; 200: mist amount collector unit; 201: collection mist groove; 202: cover plate; 203: the slit; 204: measuring cup; 205: the measuring cup support; 206: spraying face.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
As illustrated in fig. 1 and 2; It is the structural representation of a kind of embodiment of the utility model; Comprise sprayer unit 100 and mist amount collector unit 200, said sprayer unit is used for spraying liquid, and said mist amount collector unit 200 comprises collection mist groove 201, cover plate 202 and measuring cup 204; Said cover plate 202 is provided with slit 203; Said cover plate 202 is positioned at the top of collection mist groove 201, and said measuring cup 204 is positioned at the bottom of collection mist groove 201, and the liquid that said sprayer unit 100 sprays flows in the collection mist groove 201 through the slit on the cover plate 201 203; Liquid on the collection mist groove 201 flow in the measuring cup 204 of bottom through the slotted eye on it, and said cover plate 202 is through moving the mist amount of diverse location on the spraying face of measurement 206 on collection mist groove 201.The spraying measurement mechanism of the utility model is through being provided with the cover plate 202 in slit on collection mist groove 201; Utilize cover plate 202 on collection mist groove 201, to move the mist amount of diverse location on the spraying face of measurement 206; Through collecting the mist amount of diverse location on the spraying face; Can set up variable rate spray at two-dimensional space and three-dimensional space-time mist amount distribution plan, thereby method and foundation are provided for the pesticide application effect assessment.
The utility model collection mist groove 201 can be various suitable structures, and for example width is that 5cm, the degree of depth are the V-shaped groove of 4cm.The cover plate 202 that is positioned on the collection mist groove 201 can be various suitable materials such as stainless steel, and slit 203 sizes on it can be set as required, and generally its length is greater than the length of spraying face, and preferably, width is 1～5 centimetre.In order to prevent that the outer spray film of measurement range from flowing in the slit, preferably, on the cover plate slit 203 around be provided with baffle plate, more preferably, the height of baffle plate is 1～4 centimetre, the slit shown in the figure is 2cm.Also be provided with the measuring cup support 205 that is used to place measuring cup in the bottom of measuring cup 204 among the embodiment shown in the figure, thereby fix measuring cup 204.
The sprayer unit of the utility model can be taked various suitable structures, is used for to mist amount collector unit 200 spraying liquids.Sprayer unit 100 among the embodiment shown in Figure 2 comprises air pump 101, pressure control valve 102, pressure control unit 103, gas-holder 104, fluid reservoir 105, proportioning valve 106, proportional valve control unit 107 and nozzle 108; Said pressure control unit 103 is through the gaseous tension in the pressure control valve 102 control gas-holder 104; The flow of said proportional valve control unit 107 passing ratio valves, 106 control nozzles 108; Said gas-holder 104 communicates with fluid reservoir 105; Hold liquid to be sprayed in the fluid reservoir 105, gas-holder 104 provides pressure through gas wherein to fluid reservoir 105, thereby the liquid in the fluid reservoir 105 is sprayed from nozzle 108.Liquid in this fluid reservoir 105 is owing to receive certain pressure, thereby under the effect of pressure, sprays, and the size of pressure can be set as required.
The measurement that the mist quantity space that the utility model utilizes this device to carry out variable rate spray distributes, measuring method comprises the steps:
Step S1 installs the mist measuring device, on the top of collection mist groove the cover plate that has the slit is set, and is provided with the measuring vessel of collecting liquid in the bottom of collection mist groove, and sprayer unit is arranged at the top of collection thing groove;
Step S2 starts sprayer unit, and sprayer unit is spraying liquid on collection mist groove, on collection mist groove, moves cover plate, collects the mist amount through the measuring vessel that is positioned at collection mist groove bottom, thereby reaches the mist amount of diverse location on the spraying face of measurement.
Above measuring method also comprises the operation of adjustment sprayer unit flow; For example the passing ratio valve control unit, VCU is controlled the flow of nozzle; Duty through changing the PWM square-wave signal is recently adjusted nozzle flow; Thereby realized the flow of adjustment sprayer unit, utilized step S1 and S2 the sprayer unit of each flow to be carried out the mist measurement amount of diverse location on the corresponding spraying face.
In order further to show the data of the mist amount of spraying face, realize the visualization display of spraying face, obtain two dimension or three-dimensional effect directly perceived, thereby method and foundation are provided for the pesticide application effect assessment.The demonstration of the data of sampled point being carried out two dimension or three-dimensional can utilize EXCEL or MATLAB software to operate, and can show through space-time mist amount distribution plan intuitively.
Below in conjunction with embodiment this measuring method is described:
One, carries out the data acquisition of mist amount
The collecting method of 1-D mist amount distribution modeling is a prior art, does not need during measurement on collection thing groove, to add cover plate.The nozzle axle center is perpendicular to surface level and through collecting the central point of thing groove.Place measurement plane top 50cm highly to locate at nozzle, regularly collect hydrojet, utilize the mist amount in each measuring cup of ultrasound wave precision ranging commercial measurement, distribute with the mist amount of gathering each section of x direction spraying mist type with measuring cup, and record data.(the x direction is the X direction of spraying face)
The mist amount acquisition method that 2-D space mist amount distributes is at stainless steel cover plate of collection thing groove upper cap of gathering the mist amount, the slit that in the middle of cover plate, to open a width be 2cm.Being welded with a circle around the slit high is the baffle plate of 2cm, to prevent in the outer droplet inflow slit of measurement range.The stationkeeping of nozzle is motionless; Move cover plate (the y direction of principal axis is to direction perpendicular to the spraying over glaze) along the y direction of principal axis, make the slit on the cover plate be parallel to spraying over glaze line (x axle) all the time, as shown in Figure 3; The face of will spraying is divided parallel lines C1, C2, C3, C4, C5 along the x direction of principal axis; Through sampled point being set to being parallel to spraying over glaze line direction, utilize measuring cup to carry out the mist amount that acquisition stream is crossed place, cover plate slit, as shown in Figure 4.When the position in slit on the cover plate during respectively at the C1 of spraying face, C2, C3, C4, C5 line place, press 1-D mist amount distributed data acquisition method, measure the spray amount data of corresponding position respectively, and record data.
Two, carrying out data processing and mist amount distribution plan creates
(1) 1-D mist amount distributes
After each spraying distribution measuring finishes; With the volume of the liquid of being received in each measuring cup divided by liquid capacity sum in all measuring cups; Obtain the number percent number that amount of liquid that each locational measuring cup connects accounts for total mist flow; Defining this number percent number is the normalization spray amount, with it as the spraying abundance on the correspondence position in the statistical study.Is transverse axis as the longitudinal axis, with each mist amount collection position apart from the distance of point midway with the normalization spray amount, sets up spraying 1-D mist amount and distributes.
(2) mist amount in 2-D space distributes
At axial each cross-section of the x that is parallel to spraying face (C1, C2, C3, C4, C5 line place); Measure the mist amount distributed data of each sampled point respectively; Utilize Excel two dimension curved surface creation method (being not limited to the Excel mode, also can be that other modes are created), the measurement data of each sampled point is superposeed; Set up spraying 2-D distributed model, the constructive process of 2-D space mist amount distribution plan is following:
(1) dutycycle (promptly changing flow) of change PWM square-wave signal obtains the different operating situation.Measure and write down the mist amount data of each sampled point with the mist amount acquisition method of 2-D space mist amount distribution;
The mist amount data of each sampled point that (2) will measure change in the Excel document.With the embodiment dutycycle is that 60% spraying is an example, and the form in the data typing Excel document is as shown in the table:
Table 1 dutycycle is the form of 2-D mist amount data in Excel of 60% spraying embodiment
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 3.4 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 3.6 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 3.2 | 3.4 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 2.3 | 4.5 | 6.5 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 3.1 | 4.6 | 7.8 | 3.4 | 2.8 | 0 | 0 | 0 | |
| 0 | 0 | 3.3 | 6.8 | 11.6 | 7.8 | 5.4 | 2.4 | 0 | 0 | |
| 0 | 0 | 3.2 | 8.7 | 13.4 | 9.7 | 4.5 | 2.4 | 0 | 0 | |
| 0 | 0 | 5.9 | 11.5 | 16.9 | 12.8 | 6.8 | 2.5 | 0 | 0 | |
| 0 | 2.5 | 7.6 | 14.6 | 21.4 | 17.7 | 12 | 3.5 | 2.1 | 0 | |
| 0 | 4.9 | 7 | 15.3 | 23.7 | 18.3 | 13.8 | 4.9 | 2.6 | 0 | |
| 0 | 4.1 | 5.2 | 16.2 | 24.2 | 20.5 | 15.6 | 6.7 | 3.4 | 0 | |
| 0 | 3.3 | 7.2 | 9.8 | 19.1 | 17.3 | 14.3 | 5.4 | 2.9 | 0 | |
| 0 | 0 | 2.2 | 7.1 | 14.4 | 14.9 | 12.4 | 7.8 | 2.4 | 0 | |
| 0 | 0 | 0 | 4 | 10.1 | 10.7 | 8.9 | 5.5 | 6.9 | 0 | |
| 0 | 0 | 0 | 0 | 7.7 | 6.9 | 9 | 3.3 | 3.2 | 0 | |
| 0 | 0 | 0 | 0 | 3.3 | 5.4 | 5.6 | 3.2 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 3.7 | 6.2 | 5.2 | 3.2 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 2.3 | 6 | 5.1 | 3 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 0 | 3.7 | 5.8 | 2.5 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
(3) select to want data presented in surface chart, set up 2-D space-time mist amount distribution plan then according to the following steps: 1. in " insertion " menu, click " chart ".2. in " subtype " dialog box, click " surface chart ", click " next step ".3. in " graphics source data " dialog box, select in " series is created in " option " row ", click " next step ".4. in " Graph Options ", the title of customized justice " Chart Title ", " X axle " and " Y axle "; The scale of " X axle " and " Y axle "; Select whether to use the mesh lines of " X axle " and " Y axle " direction in the surface chart; Whether Data Identification is arranged in the surface chart.Click " next step ".5. select the insertion position of the surface chart of building, promptly generated the 2-D distribution plan shown in Fig. 6 (b).In like manner; Can generate dutycycle and be 50%, 70%, 80% o'clock mist amount 2-D static distribution figure; Fig. 6 (a)-(d) is that PWM continous way variable rate spray dutycycle is 50%, 60%, 70%, 80% o'clock a mist amount 2-D static distribution, and is visible by Fig. 6, and its 2-D mist amount distributes and is normal distribution; Along with the increase of dutycycle, flow increases, and the spraying coating ratio in the middle position zone increases.
(3) 3-D space-time mist amount distributes
Change the dutycycle (promptly changing flow) of PWM square-wave signal, obtain the different operating situation.Under different working conditions, according to the method for collection of 2-D space mist amount distributed data and modeling, the static space of the 2-D when being based upon different flow mist amount distributes.The static space of 2-D when superposeing different flow at random with certain interval (speed) as required mist amount distributes, and to set up the dynamic 3-D spatial and temporal distributions model of spraying, shown in Figure 5 is 3-D space-time spraying distribution modeling stacking method synoptic diagram.The constructive process of 3-D space-time spraying distribution plan is following:
(1) dutycycle (promptly changing flow) of change PWM square-wave signal obtains the different operating situation.The mist amount data of each sampled point when the mist amount acquisition method that distributes with 2-D space mist amount is measured the different operating situation, and write down the mist amount data of each sampled point;
(2) set up the 3-D space-time spray amount distributed model of variable rate spray by stacking method shown in Figure 5.In the drawings, directions X is a spraying over glaze line direction, and the Y direction is operation working direction (direction promptly superposes), and the Z direction characterizes the spray amount thickness after the modeling.The spraying face (distribution of 2-D space-time mist amount) that each elliptical area representative among the figure is a kind of when spraying operating mode; Spraying face during according to actual needs with different operating modes (mist flow) superposes with certain interval (or speed); To set up the dynamic 3-D spatial and temporal distributions model of spraying, as shown in Figure 5.In practical operation; Delegation or multirow one by one can move right the mist amount data in the Excel document; Carry out the stack of correspondence position data with move the data and the legacy data that form at every turn; Form three-dimensional Excel list data, utilize the method for building up of Excel surface chart to generate three-dimensional mist amount distribution plan automatically.
With the embodiment dutycycle is that 80% spraying operating mode is an example, with 4 dutycycles be 80% spraying 2-D mist amount distributed data respectively with 2,4,6 and the interval of 8cm superpose.Because of being 2cm in each displacement of cover plate on collection thing groove, in the Excel form, only need when being 2cm at interval the data correspondence delegation that moves right for stack, only need when being 4cm at interval data correspondence two row that move right for stack, the rest may be inferred.Schematic table is as shown in table 2.5 square frames are arranged in the table 2, represent the spraying face mist amount data of the 2cm that moves right successively from left to right respectively.It is superimposed that 5 21 * 14 ordered series of numbers that will contain 5 groups of spraying face mist amount data press correspondence position, just can obtain the correspondence 3-D space-time mist amount distributed data under the operating mode of spraying, as shown in table 3.
(3) select to want data presented in surface chart, set up 3-D space-time mist amount distribution plan then according to the following steps: 1. in EXCEL " insertion " menu, click " chart ".2. in " subtype " dialog box, click " surface chart ", click " next step ".3. in " graphics source data " dialog box, select in " series is created in " option " row ", click " next step ".4. in " Graph Options ", the title of customized justice " Chart Title ", " X axle " and " Y axle "; The scale of " X axle " and " Y axle "; Select whether to use the mesh lines of " X axle " and " Y axle " direction in the surface chart; Whether Data Identification is arranged in the surface chart.Click " next step ".5. select the insertion position of the surface chart of building, generating dutycycle automatically is 80% spraying, the three-dimensional mist amount distribution plan that stack is spaced apart 2cm.In like manner, can generate the three-dimensional mist amount distribution plan that stack is spaced apart 4cm, 6cm, 8cm.With dutycycle is that 80% spraying operating mode is an example, respectively with 2,4,6 and the interval of 8cm superpose, the cut-open view of the 3-D space-time mist amount distributed model of single fan nozzle is shown in Fig. 7 (a)-(d).Visible by Fig. 7, mist amount deposition distribution is more even when stack is spaced apart 6cm, this shows, selects suitable operation gait of march can make mist amount deposition distribution be tending towards even
Table 2 dutycycle is 80% spraying embodiment, the form that 2-D mist amount data superpose with 2cm at interval
Table 3 dutycycle is 80% spraying embodiment, the result data that 2-D mist amount data superpose with 2cm at interval
| OK | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | |
| Row | |||||||||||||||
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2 | 0 | 0 | 0 | 0 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 0 | 0 | 0 | 0 | 0 | |
| 3 | 0 | 0 | 0 | 0 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 0 | 0 | 0 | 0 | 0 | |
| 4 | 0 | 0 | 0 | 3.2 | 6.6 | 6.6 | 6.6 | 6.6 | 3.4 | 0 | 0 | 0 | 0 | 0 | |
| 5 | 0 | 0 | 2.3 | 6.8 | 13.3 | 13.3 | 13.3 | 11 | 6.5 | 0 | 0 | 0 | 0 | 0 | |
| 6 | 0 | 0 | 3.1 | 7.7 | 15.5 | 18.9 | 21.7 | 18.6 | 14 | 6.2 | 2.8 | 0 | 0 | 0 | |
| 7 | 0 | 0 | 3.3 | 10.1 | 21.7 | 29.5 | 34.9 | 34 | 27.2 | 15.6 | 7.8 | 2.4 | 0 | 0 | |
| 8 | 0 | 0 | 3.2 | 11.9 | 25.3 | 35 | 39.5 | 38.7 | 30 | 16.6 | 6.9 | 2.4 | 0 | 0 | |
| 9 | 0 | 0 | 5.9 | 17.9 | 34.8 | 47.6 | 54.4 | 51 | 39 | 22.1 | 9.3 | 2.5 | 0 | 0 | |
| 10 | 0 | 2.5 | 10.1 | 25.1 | 46.5 | 64.2 | 73.7 | 69.6 | 56.7 | 35.3 | 17.6 | 5.6 | 2.1 | 0 | |
| 11 | 0 | 4.9 | 11.9 | 26.9 | 50.6 | 68.9 | 77.8 | 75.7 | 63.3 | 39.6 | 21.3 | 7.5 | 2.6 | 0 | |
| 12 | 0 | 4.1 | 9.3 | 25.3 | 49.5 | 70 | 81.5 | 83 | 70.4 | 46.2 | 25.7 | 10.1 | 3.4 | 0 | |
| 13 | 0 | 3.3 | 10.5 | 20.3 | 39.4 | 56.7 | 67.7 | 65.9 | 59 | 39.9 | 22.6 | 8.3 | 2.9 | 0 | |
| 14 | 0 | 0 | 2.2 | 9.3 | 23.7 | 38.6 | 51 | 56.6 | 51.9 | 37.5 | 22.6 | 10.2 | 2.4 | 0 | |
| 15 | 0 | 0 | 0 | 4 | 14.1 | 24.8 | 33.7 | 39.2 | 42.1 | 32 | 21.3 | 12.4 | 6.9 | 0 | |
| 16 | 0 | 0 | 0 | 0 | 7.7 | 14.6 | 23.6 | 26.9 | 30.1 | 22.4 | 15.5 | 6.5 | 3.2 | 0 | |
| 17 | 0 | 0 | 0 | 0 | 3.3 | 8.7 | 14.3 | 17.5 | 17.5 | 14.2 | 8.8 | 3.2 | 0 | 0 | |
| 18 | 0 | 0 | 0 | 0 | 3.7 | 9.9 | 15.1 | 18.3 | 18.3 | 14.6 | 8.4 | 3.2 | 0 | 0 | |
| 19 | 0 | 0 | 0 | 0 | 2.3 | 8.3 | 13.4 | 16.4 | 16.4 | 14.1 | 8.1 | 3 | 0 | 0 |
| 20 | 0 | 0 | 0 | 0 | 0 | 3.7 | 9.5 | 12 | 12 | 12 | 8.3 | 2.5 | 0 | 0 | |
| 21 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The utility model is set up two-dimentional mist amount distribution plan and three-dimensional mist amount distribution plan according to above method, just can obtain mist amount distribution results intuitively from scheming to go up, and comparing with one dimension mist amount distribution plan has comparatively remarkable advantages, following to its effect analysis:
(1) mist amount in 2-D space distributes
Measure the mist amount data of each sampled point with the mist amount acquisition method of 2-D space mist amount distribution; Adopt Excel curved surface creation method; Superposition, set up the 2-D mist quantity space be sprayed in the unit interval and distribute, distribute and the deposition coverage condition with the mist quantity space of analysis and research variable rate spray.Fig. 6 is that PWM continous way variable rate spray dutycycle is 50%, 60%, 70%, 80% o'clock a mist amount 2-D static distribution; Shown in Fig. 6 (a)-(d); The x direction of its mean camber is the distance apart from nozzle center, and the y direction is spraying face width degree, and the z direction is the normalization spray amount.Can be found out that by Fig. 6 (a)-(d) the spraying 2-D mist amount during different flow distributes and is normal distribution, and along with the increase of dutycycle, flow increases, the spraying coating ratio in the middle position zone increases.
(2) 3-D space-time mist amount distributes
Change the dutycycle (promptly changing flow) of PWM square-wave signal, the spraying 2-D mist amount of setting up under each operating mode distributes.Each 2-D mist amount is distributed in the operation direct of travel superposes with certain interval, the 3-D space-time mist amount that obtains spraying distributes.With dutycycle is that 80% spraying operating mode is an example; Respectively with 2,4,6 and the interval of 8cm superpose; The cut-open view of the 3-D space-time mist amount distributed model of single-nozzle is shown in Fig. 7 (a)-(d); The x direction of its mean camber is the operation direct of travel, and the y direction is the distance of stack, and the z direction is the normalization spray amount.Mist amount deposition distribution is more even when stack is spaced apart 6cm, this shows, selects suitable operation gait of march can make mist amount deposition distribution be tending towards even.
Can be found out that by above embodiment the utility model embodiment has carried out visual Simulation through the experimental measurement result that variable rate spray mist amount is distributed, 1-D mist amount distributed model shows that the mist amount that reduces with flow distributes concentrated to central authorities; 2-D mist amount distributed model shows to distribute with fluctuations in discharge two dimension mist amount and is normal distribution all the time, and increases with flow, increases at the spraying coating ratio of middle section; 3-D space-time mist amount distributed model shows that mist amount deposition distribution is tending towards even when selecting suitable operation gait of march.Method with visualized graphs can be to the carrying out spatial analysis of visual pattern more of variable rate spray mist quantity space distribution; The progress of Along with computer technology and the development of modeling algorithm; The method can be used as prediction and analyzes a kind of effective analytical approach spray mist quantity space distribution characteristics, thereby method and foundation is provided for the pesticide application effect assessment.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (6)
1. the measurement mechanism that distributes of the mist quantity space of a variable rate spray; It is characterized in that comprise sprayer unit and mist amount collector unit, said sprayer unit is used for spraying liquid; Said mist amount collector unit comprises collection mist groove, the cover plate that has the slit and measuring vessel; Said cover plate is positioned at the top of collection mist groove, and said measuring vessel is positioned at the bottom of collection mist groove, and the liquid that said sprayer unit sprays flows in the collection mist groove through the slit on the cover plate; Liquid on the collection mist groove flow in the measuring vessel of bottom through the slotted eye on it, and said cover plate is through moving the mist amount of diverse location on the spraying face of measurement on collection mist groove.
2. mist measuring device according to claim 1 is characterized in that, on the said cover plate slit around be provided with baffle plate, be used to prevent that the outer spray film of measurement range from flowing in the slit.
3. mist measuring device according to claim 2 is characterized in that, the height of said baffle plate is 1～4 centimetre.
4. according to any one described mist measuring device of claim 1-3, it is characterized in that the width in slit is 1～5 centimetre on the said cover plate.
5. mist measuring device according to claim 4 is characterized in that, the width in slit is 2 centimetres on the said cover plate.
6. according to any one described mist measuring device of claim 1-3; It is characterized in that said sprayer unit comprises air pump, gas-holder, pressure control unit, fluid reservoir, proportional valve control unit and nozzle, said pressure control unit is used for controlling the gaseous tension of gas-holder; Said proportional valve control unit is used to control the flow of nozzle; Said gas-holder communicates with fluid reservoir, is used for to fluid reservoir pressure being provided, thereby the liquid in the fluid reservoir is gone out from nozzles spray with certain pressure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201120565057 CN202420888U (en) | 2011-12-29 | 2011-12-29 | Device for measuring mist quantity space distribution of variable sprayed mist |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201120565057 CN202420888U (en) | 2011-12-29 | 2011-12-29 | Device for measuring mist quantity space distribution of variable sprayed mist |
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| CN202420888U true CN202420888U (en) | 2012-09-05 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519685A (en) * | 2011-12-14 | 2012-06-27 | 福建龙净环保股份有限公司 | Device and method for testing dust collection polar liquid film of wet type electrostatic dust collector |
| CN102564790A (en) * | 2011-12-29 | 2012-07-11 | 北京农业智能装备技术研究中心 | Device and method for measuring spray volume spatial distribution of variable rate spray |
| CN111060276A (en) * | 2019-11-29 | 2020-04-24 | 北京农业智能装备技术研究中心 | Grading method and testing device for agricultural spray head drift performance |
| CN112179613A (en) * | 2019-07-04 | 2021-01-05 | 江苏科技大学 | Normal pressure spray flow intensity measuring device |
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2011
- 2011-12-29 CN CN 201120565057 patent/CN202420888U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519685A (en) * | 2011-12-14 | 2012-06-27 | 福建龙净环保股份有限公司 | Device and method for testing dust collection polar liquid film of wet type electrostatic dust collector |
| CN102564790A (en) * | 2011-12-29 | 2012-07-11 | 北京农业智能装备技术研究中心 | Device and method for measuring spray volume spatial distribution of variable rate spray |
| CN112179613A (en) * | 2019-07-04 | 2021-01-05 | 江苏科技大学 | Normal pressure spray flow intensity measuring device |
| CN111060276A (en) * | 2019-11-29 | 2020-04-24 | 北京农业智能装备技术研究中心 | Grading method and testing device for agricultural spray head drift performance |
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