CN105638617B - A kind of wind curtain type air-flow auxiliary flow guide system - Google Patents

A kind of wind curtain type air-flow auxiliary flow guide system Download PDF

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Publication number
CN105638617B
CN105638617B CN201610089475.1A CN201610089475A CN105638617B CN 105638617 B CN105638617 B CN 105638617B CN 201610089475 A CN201610089475 A CN 201610089475A CN 105638617 B CN105638617 B CN 105638617B
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China
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flow
air
wind
ventilating duct
rack
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CN201610089475.1A
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CN105638617A (en
Inventor
贾卫东
闻志勇
刘欢
张明
申彬
李信
颜杰
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Jiangsu University
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Jiangsu University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01MCATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/005Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
    • A01M7/0064Protection shields
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01MCATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/0025Mechanical sprayers
    • A01M7/0032Pressure sprayers
    • A01M7/0042Field sprayers, e.g. self-propelled, drawn or tractor-mounted

Abstract

The present invention relates to a kind of wind curtain type air-flows to assist flow guide system, belongs to field of plant protection machine.It is equipped with wind speed wind direction sensor in frame top, it is additionally provided with two transmission devices and two flow controlling bars, trepanning is respectively fitted on corresponding front two rows ventilating duct on two flow controlling bars, two transmission devices are separately mounted to rack both ends, it is connect respectively with one end of flow controlling bar, the flow controlling bar other end is mounted in rack, the direction of motion and speed of natural wind in working environment are measured according to the wind speed wind direction sensor, on the one hand adjustment frequency converter working frequency changes the rotating speed of axial flow blower, controls the air velocity of ventilating duct;On the other hand it drives flow controlling bar to be rotated in rack by transmission device, to drive ventilating duct to rotate, adjusts the air motion direction of ventilating duct.Present invention can apply on spray bar type spraying machine, to effectively improve the penetration capacity of droplet and reduce the drift of droplet.

Description

A kind of wind curtain type air-flow auxiliary flow guide system
Technical field
The present invention relates to a kind of wind curtain type air-flows to assist flow guide system, belongs to field of plant protection machine.
Background technology
Currently, with the fast development of science and technology, in the operation of crop field, large and medium-sized mechanization of agriculture dispenser equipment will be at For mainstream working equipment, since wind curtain type spray bar type spraying machine spraying swath is big, operating efficiency is high, spray effect is good, low in the pollution of the environment The features such as, starts to promote and try out on the farm of part.The air curtain air bag lower abdomen of existing wind curtain type boom sprayer is set There is the aperture towards ground, the air curtain blown out using aperture is delivered droplets on and is coerced to crop canopies, to reduce float of mist droplet, but Due to blocking for crop canopies, the mist droplet deposition in crop lower part stalk and blade is less, and dispenser uniformity is poor, and cannot be very The good interference for resisting natural wind, especially when natural wind speed is larger, float of mist droplet is serious and causes pesticide utilization rate low, because of medicine Environmental pollution is also than more serious caused by liquid stream is lost.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of wind curtain type air-flow auxiliary flow guide system, increase The big interference for resisting natural wind, makes droplet effectively be moved to crops and is covered on crop, efficiently solve droplet The big defect of drift, improves pesticide utilization rate, reduces the pollution to environment.
The present invention is as follows using specific technical solution:A kind of wind curtain type air-flow auxiliary flow guide system, including rack, axis stream wind Machine, frequency converter, air curtain air bag, the axial flow blower are fixed on the rack, and the air curtain air bag is mounted on the lower section of axial flow blower, Arrangement two rows of ventilating ducts in front and rear sides below air curtain air bag, axial flow blower gives air curtain airbag aeration when work, passes through wind-guiding tubular At twice air curtain air-flow to obstruct natural wind and increase droplet area coverage, rack-mounted frequency converter connects with axial flow blower It connects, it is characterised in that:It is equipped with wind speed wind direction sensor in frame top, is additionally provided with two transmission devices and two flow controllings Bar, on two flow controlling bars trepanning be respectively fitted on corresponding front two rows ventilating duct, two transmission devices are separately mounted to Rack both ends are connect with one end of flow controlling bar respectively, and the flow controlling bar other end is mounted in rack, according to the wind speed Wind transducer measures the direction of motion and speed of natural wind in working environment, on the one hand adjusts frequency converter working frequency and changes axis The rotating speed of flow fan controls the air velocity of ventilating duct;On the other hand drive flow controlling bar in rack by transmission device Rotation, to drive ventilating duct to rotate, adjusts the air motion direction of ventilating duct.
Further, the air inlet end of the air curtain air bag is solid by gland, gasket and clip and the axial flow blower Determine and is connected to.
The transmission device includes large and small gear and motor, and motor is fixed on the rack, and pinion gear is mounted on motor, The flow controlling bar by bearing be mounted on the rack both ends, gear wheel be mounted on flow controlling bar one end and with small tooth Wheel engagement, pinion gear adjust the rotation of flow controlling bar with the gear wheel on flow controlling bar by engaged transmission, Change ventilating duct air motion direction, to realize the purpose pushed crop canopies open and obstruct natural wind.
In said program, air curtain air bag bottom is plane, is fixedly connected, can effectively prevent with the Weight plate of lower section Only natural wind causes to swing to air curtain air bag.
In said program, the ventilating duct top is divided into cone, and lower part is divided into cylinder, and wherein conical portion joins Be connected on air curtain air bag, this frame mode can ensure air curtain air-flow from ventilating duct come out after be uniformly distributed.
In said program, the quantity in hole and the quantity of ventilating duct are consistent on the flow controlling bar;Flow controlling Bar one end is equipped with step, the other end is equipped with keyway and step, and one end set upper bearing (metal) for being equipped with step is connect with rack, is equipped with keyway It is connect with rack with upper bearing (metal) is covered again after one end of step installation gear wheel, realizes axial restraint.
In said program, the air curtain air bag and ventilating duct are soft material part, such as PVC.
The device have the advantages that:The wind curtain type air-flow of the present invention assists flow guide system, is sensed according to wind speed and direction Device measures the direction of motion and speed of natural wind, and air-flow is formed by the ventilating duct and flow controlling bar of air curtain air bag front and rear sides Uniform air curtain, can effectively resist the interference of natural wind, and can effectively improve the penetration capacity of droplet, be applicable to grow Intensive crop, reduces float of mist droplet, increases deposition of the pesticide on target, improves the effective rate of utilization of pesticide, Agroecological environment is improved, easy to operate, performance is stablized, and guarantee sprays operating efficiency, and being provided for agricultural sustainable development must The guarantee wanted.
Description of the drawings
Fig. 1 is that patent wind curtain type air-flow of the present invention assists flow guide system schematic diagram.
Fig. 2 is the scheme of installation of patent axial flow blower and air curtain air bag of the present invention.
Fig. 3 is A direction views in Fig. 2.
Fig. 4 is float of mist droplet test device schematic diagram.
In figure:1. rack, 2. frequency converters, 3. wind speed wind direction sensors, 4. axial flow blowers, 5. air curtain air bags, 6. Weight plates, 7. motor, 8. flow controlling bars, 9. gaskets, 10. glands, 11. clips, 12. pinion gears, 13. gear wheels, 14. ventilating ducts.
Specific implementation mode
Further illustrate that the wind curtain type air-flow assists flow guide system below in conjunction with the accompanying drawings.
In specific implementation mode as shown in Figure 1, Figure 2, Figure 3 shows, a kind of wind curtain type air-flow assists flow guide system, by rack 1, Frequency converter 2, wind speed wind direction sensor 3, axial flow blower 4, air curtain air bag 5, Weight plate 6, motor 7, flow controlling bar 8, gasket 9, gland 10, clip 11, pinion gear 12, gear wheel 13 and ventilating duct 14 form;Frequency converter 2, wind speed wind direction sensor 3, axis stream Wind turbine 4 and motor 7 are mounted on by bolt in rack 1, and flow controlling bar 8 is mounted on by bearing in rack 1, air curtain air bag 5 Air inlet end fix and be connected to by gasket 9, gland 10 and clip 11 and axial flow blower 3, pinion gear 12 is installed by key On motor 7, gear wheel 13 is mounted on by key on flow controlling bar 8, and the hole on flow controlling bar 8 is sleeved on ventilating duct 14, And it corresponds.
The wind curtain type air-flow assists the flow guide system course of work:Working environment is measured according to wind speed wind direction sensor 3 first The wind speed and direction of middle natural wind, the working frequency (0~50Hz) that operating personnel manually adjust frequency converter 2 change axial flow blower 4 Rotating speed, change the air outlet wind speed (0~17m/s) of ventilating duct 14, pass through nibbling for pinion gear 12 on motor 7 and gear wheel 13 The rotation that transmission drives flow controlling bar 8 is closed, the air motion direction of ventilating duct 14 is changed;It determines the frequency of frequency converter 4 and leads Flow control bar 8 proceeds by operation after suitable position, by wind curtain type air-flow assist in flow guide system in ventilating duct 14 air-flow into Row sprays obliquely or downwards, and air-flow pushes crop canopies open and generates gap, while obstructing interference of the natural wind to droplet, on the one hand Droplet can be made to enter inside crop canopies out of crop canopies gap, droplet can on the other hand increased in the area coverage of crop Greatly, to effectively improve the penetration capacity of droplet and reduce float of mist droplet.
Experimental verification:A kind of air curtain airbag structure (agricultural mechanical journal was mentioned in one article at the peaks Wang Jun:Wind curtain type Strength auxiliary electrostatic sprayed deposit characteristic, 2 months 2012), the apparatus structure difference of documents:1, do not have below air curtain air bag There is Weight plate, air curtain can not be made to ensure the stability and spraying accuracy of air bag;2, the shape of ventilating duct is cylinder in document Shape, neither the ventilating duct top of the present invention is divided into cone, lower part is divided into cylinder, and this structure can more be such that ventilating duct comes out Air-flow it is more uniform;The comparison present invention and influence of the air curtain air bag to float of mist droplet in open source literature, experiment are tried by collection mist Measuring system and spraying system composition are tested, float of mist droplet rate can be detected;Collect what mist testing & measuring system was folded by one Mist type collecting tank, container and electronic balance composition, spraying system are sequentially connected by medicine-chest, diaphragm pump, pressure regulator valve and Fan spray head Composition;Refer to Fig. 4.
It is that 0.5MPa and natural wind blow to air curtain air bag front in atomisation pressure, under the influence of wind speed average out to 4m/s, surveys It measures the drift rate of droplet and carries out data comparison.The present invention manually adjusts frequency converter 2 according to the wind speed and direction for measuring natural wind Working frequency change axial flow blower 4 rotating speed, change ventilating duct 14 air outlet wind speed (0~17m/s), by motor 7 The engaged transmission of pinion gear 12 and gear wheel 13 drive the rotation of flow controlling bar 8, change the air motion side of ventilating duct 14 To wherein DfIt is total that the droplet gross mass that nozzle sprays is subtracted the droplet that the deposition for being collected into droplet divided by nozzle spray by expression Float of mist droplet rate obtained by quality;Q indicates that the droplet gross mass sprayed, the deposition of D droplets are expressed as:
The observation present invention and influence of the open source literature to float of mist droplet rate, table 1 is the float of mist droplet rate data measured.It is logical It crosses to compare and obtain:The float of mist droplet rate of the present invention is smaller than the float of mist droplet rate of open source literature, it is believed that:Apoplexy of the present invention Curtain air-flow is can preferably to improve float of mist droplet rate situation.
In summary:Air curtain air-flow can make the smaller that float of mist droplet rate becomes in this patent, illustrate that anti-drift performance is more preferable. Due to always having natural wind in field rotating medicine, the twice air curtain that the boom sprayer with air curtain apparatus is formed can have The interference for preventing to effect natural wind, to reduce drift;Air curtain air-flow plays perturbation action to crop blade face simultaneously, enhances mist The penetration performance and droplet area coverage of drop.
Table 1

Claims (4)

1. a kind of wind curtain type air-flow assists flow guide system, including rack, axial flow blower, frequency converter, air curtain air bag, the axis stream wind Machine is fixed on the rack, and the air curtain air bag is mounted on the lower section of axial flow blower, and front and rear sides arrangement is two rows of below air curtain air bag Ventilating duct, axial flow blower gives air curtain airbag aeration when work, twice air curtain air-flow is formed by ventilating duct with obstruct natural wind and Increase droplet area coverage, rack-mounted frequency converter is connect with axial flow blower, it is characterised in that:It is equipped in frame top Wind speed wind direction sensor is additionally provided with two transmission devices and two flow controlling bars, on two flow controlling bars trepanning cover respectively On corresponding front two rows ventilating duct, two transmission devices are separately mounted to rack both ends, respectively with the one of flow controlling bar End connection, the flow controlling bar other end are mounted in rack, are measured according to the wind speed wind direction sensor natural in working environment On the one hand the direction of motion and speed of wind adjust the rotating speed that frequency converter working frequency changes axial flow blower, control the gas of ventilating duct Flow velocity degree;On the other hand it drives flow controlling bar to be rotated in rack by transmission device, to drive ventilating duct to rotate, adjusts The air motion direction of ventilating duct;The air curtain air bag and ventilating duct are soft material part;The soft material part is PVC; The air inlet end of the air curtain air bag is fixed and is connected to the axial flow blower by gland, gasket and clip;The air curtain Air bag bottom is plane, is fixedly connected with the Weight plate of lower section, can be effectively prevented natural wind and cause to swing to air curtain air bag.
2. a kind of wind curtain type air-flow as described in claim 1 assists flow guide system, it is characterised in that:The transmission device includes Large and small gear and motor, motor are fixed on the rack, and pinion gear is mounted on motor, and the flow controlling bar is pacified by bearing Mounted in the both ends of the rack, gear wheel is mounted on and flow controlling bar one end and engage with pinion gear, and pinion gear is led with being mounted on Gear wheel on flow control bar adjusts the rotation of flow controlling bar by engaged transmission, changes ventilating duct air motion direction, To realize the purpose pushed crop canopies open and obstruct natural wind.
3. a kind of wind curtain type air-flow as described in claim 1 assists flow guide system, it is characterised in that:The ventilating duct top It is divided into cone, lower part is divided into cylinder, and wherein conical portion is connected on air curtain air bag, ensures air curtain air-flow from ventilating duct Being uniformly distributed after out.
4. a kind of wind curtain type air-flow as described in claim 1 assists flow guide system, it is characterised in that:The flow controlling bar The quantity in upper hole and the quantity of ventilating duct are consistent;Flow controlling bar one end is equipped with step, the other end is equipped with keyway and step, Equipped with step one end set upper bearing (metal) connect with rack, equipped with one end of keyway and step installation gear wheel after cover again upper bearing (metal) and Rack connects, and realizes axial restraint.
CN201610089475.1A 2016-02-18 2016-02-18 A kind of wind curtain type air-flow auxiliary flow guide system Active CN105638617B (en)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
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CN106359341B (en) * 2016-08-25 2020-07-07 南通黄海药械有限公司 Special pesticide applying machine for cotton
CN106386756B (en) * 2016-08-25 2019-11-15 南通黄海药械有限公司 A kind of air curtain for efficient spray machine
CN106417227A (en) * 2016-09-08 2017-02-22 江苏大学 Air feeding system for air curtain type boom sprayer
CN106417228B (en) * 2016-09-09 2019-07-09 东北农业大学 A kind of target spraying device with the anti-function of floaing of gas hood
CN107926615A (en) * 2017-12-18 2018-04-20 攀枝花环业冶金渣开发有限责任公司 A kind of soilless culture substrate containing the swollen pearl of high-titanium blast furnace slag
CN108184681A (en) * 2018-01-12 2018-06-22 佛山市辉华生物科技有限公司 A kind of Air System of pig house
CN108094218A (en) * 2018-01-12 2018-06-01 佛山市辉华生物科技有限公司 A kind of pig house hot wind air ducting
CN110972910A (en) * 2019-12-26 2020-04-10 安徽云中生态农业开发有限公司 Broccoli is planted and uses sprinkling irrigation equipment
CN111336641B (en) * 2020-03-18 2021-04-06 广州市鑫湖能源科技有限公司 Air curtain device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201732006U (en) * 2010-03-25 2011-02-02 江苏大学 Testing platform for air curtain type spray lance spraying gas and liquid two-phase flow system
CN202374930U (en) * 2011-12-02 2012-08-15 江苏大学 Two-purpose high-efficiency plant protection sprayer
CN203884522U (en) * 2014-06-20 2014-10-22 南通黄海药械有限公司 Air curtain for efficient sprayer
CN204579631U (en) * 2015-04-17 2015-08-26 苏州博田自动化技术有限公司 Caterpillar band self-propelled wind send high shoot range atomizing machine
CN205492226U (en) * 2016-02-18 2016-08-24 江苏大学 Diversion system is assisted to air curtain formula air current

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