CN102783476B - Spraying machine and air supply spraying device thereof - Google Patents

Spraying machine and air supply spraying device thereof Download PDF

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Publication number
CN102783476B
CN102783476B CN 201210322976 CN201210322976A CN102783476B CN 102783476 B CN102783476 B CN 102783476B CN 201210322976 CN201210322976 CN 201210322976 CN 201210322976 A CN201210322976 A CN 201210322976A CN 102783476 B CN102783476 B CN 102783476B
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axial flow
air
guide plate
plate
shunting guide
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CN102783476A (en
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周宏平
许林云
郁金
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Nantong Guangyi Electromechanical Co., Ltd.
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Nanjing Forestry University
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Abstract

The invention provides an air supply spraying device capable of improving uniformity of air speed of a whole outlet to reduce dispersion of (radial) air force of the outlet and accordingly improving an effective conveying distance of fogdrop. The air supply spraying device comprises a back plate opposite to an axial flow air barrel outlet, wherein a flow guiding cone coaxial with an axial flow air barrel is arranged on the back plate. A first branch guiding plate and a second branch guiding plate are further arranged between the axial flow air barrel and the back plate, axial flows flowing out of the axial flow air barrel form three parts of radial air flows under the drainage and guiding of the first branch guiding plate, the second branch guiding plate and the flow guiding cone. The three parts of radial air flows respectively flows out of the position between a casing of the axial flow air barrel and the first branch guiding plate, the position between the first branch guiding plate and the second branch guiding plate and the position between the second branch guiding plate and the back plate. A spray head for spraying is arranged between the first branch guiding plate and the second branch guiding plate.

Description

A kind of sprayer and air-assisted sprayer unit thereof
Technical field
The present invention relates to sprayer, relate in particular to the efficient air-assisted sprayer unit of orchard sprayer.
Background technology
Existing all kinds of orchards air-assisted type spraying machine is structurally more traditional, single.Be generally single air outlet or two shunting air outlets.This structure wind loss is larger, and the wind speed uniformity is poor, and the blower fan wind-force fed distance of power of the same race is little, and between wind-force conveying droplet leaf, penetration capacity is poor, and the agricultural chemicals availability is low, and control efficiency is poor.
Summary of the invention
The purpose of present technique is to provide a kind of uniformity that improves whole outlet wind speed, to reduce the scattering of outlet (radially) wind-force, thereby can improve the air-assisted sprayer unit of effective fed distance of droplet.
This air-assisted sprayer unit, comprise with the axial flow air duct and export relative backboard, and the deflection cone coaxial with the axial flow air duct is set on backboard; Also be provided with the first shunting guide plate and the second shunting guide plate between axial flow air duct and backboard, the axial flow flowed out from the axial flow air duct forms three part radial air flows under the drainage guiding of the first shunting guide plate, the second shunting guide plate and deflection cone; This three parts radial air flow respectively between the housing of axial flow air duct and the first shunting guide plate, between the first shunting guide plate and the second shunting guide plate, second shunt between guide plate and backboard and flow out; Shower nozzle for spraying is placed between the first shunting guide plate and the second shunting guide plate.
The beneficial effect of present technique: present technique changes axial flow to form from three outlets (the first outlet between the housing of axial flow air duct and the first shunting guide plate, the second outlet between the first shunting guide plate and the second shunting guide plate, the 3rd outlet between the second shunting guide plate and backboard) radial air flow flowed out, the even performance of whole air outlet wind speed is significantly improved, and when nozzle component is placed in the centre air vent place, can be with certain cone angle ejection from the droplet of Conic nozzle ejection, although under the higher wind effect, the cone angle sprayed is little when calm, but still there is certain spray regime, therefore the droplet that enters the both sides air outlet can be proceeded again to carry under the larger wind speed in both sides, and the air-flow group that the higher wind speed in both sides also is conducive to reduce interlude directly contacts the decay that the formation boundary layer causes air velocity with outside air.
Above-mentioned efficient air-assisted sprayer unit, the first shunting guide plate is identical with the second shunting guide board structure, includes the flat board perpendicular to axial flow air duct axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow air duct axis coaxle; Revolution ring flat-plate end and flat board away from axial flow air duct axis join, and on the revolution ring flat-plate, the latitude circle of diameter minimum is positioned at revolution ring flat-plate head end.On the revolution ring flat-plate of the first shunting guide plate, minimum latitude diameter of a circle is greater than minimum latitude diameter of a circle on the revolution ring flat-plate of the second shunting guide plate.
Above-mentioned efficient air-assisted sprayer unit, the water conservancy diversion element of a cone is camber line.
Present technique provides a kind of good uniformity of whole outlet wind speed simultaneously, the longer sprayer of effective fed distance of droplet.
This sprayer, it comprises above-mentioned air-assisted sprayer unit and is arranged on the axial flow blower in the axial flow air duct.
The accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
The overall construction drawing that Fig. 1 is orchard sprayer.
The front view that Fig. 2 is the first shunting guide plate.
The left view that Fig. 3 is the first shunting guide plate.
The front view that Fig. 4 is the second shunting guide plate.
The left view that Fig. 5 is the second shunting guide plate.
The front view that Fig. 6 is deep bead.
The left view that Fig. 7 is deep bead.
Fig. 8 is the anemobiagraph in air duct exit.
Fig. 9 is the analogous diagram of single air outlet air velocity.
Figure 10 is the analogous diagram of two air outlet air velocities.
Figure 11 is the analogous diagram of three air outlet air velocities.
Embodiment
Referring to the described sprayer of Fig. 1, it comprises air-assisted sprayer unit 100 and is arranged on the axial flow blower 200 in the axial flow air duct.
[0025]air-assisted sprayer unit, comprise the backboard 2 relative with 1 outlet of axial flow wind air duct, and the deflection cone 3 coaxial with the axial flow air duct is set on backboard.Backboard 2 is an integral body with deflection cone 3, forms deep bead.Also be provided with the first shunting guide plate 4 and the second shunting guide plate 5 between axial flow air duct and backboard, the axial flow flowed out from the axial flow air duct forms three part radial air flows under the drainage guiding of the first shunting guide plate 4, the second shunting guide plate 5 and deflection cone 3.This three parts radial air flow flows out from first, second and third air outlet 6,7,8 respectively.Shunt between guide plate and form the first air outlet 6 from the housing and first of axial flow air duct; Form between the second air outlet 7, the second shunting guide plates and backboard and form the 3rd air outlet 8 between the first shunting guide plate and the second shunting guide plate.Shower nozzle (assembly) 11 for spraying is placed in the second air outlet 7.
[0026]the first shunting guide plate is identical but vary in size with the second shunting guide board structure, includes the flat board 9 perpendicular to axial flow air duct axis, the revolution ring flat-plate 10 that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow air duct axis coaxle.Away from the revolution ring flat-plate end and dull and stereotyped tangent connection of axial flow air duct axis, on the revolution ring flat-plate, the latitude circle of diameter minimum is positioned at revolution ring flat-plate head end.On the revolution ring flat-plate of the first shunting guide plate, minimum latitude diameter of a circle is greater than minimum latitude diameter of a circle on the revolution ring flat-plate of the second shunting guide plate.
Selecting the air duct diameter is 700mm, axial length 580mm, rotation speed of fan 1350rpm.In the situation that the air duct outlet, without any deep bead and shunting guide plate, is measured the wind speed in air duct exit, measuring point is for being positioned at different distance place, air duct end cross section Shang Juzhou center, i.e. different radii place.Measurement result is in Table 1 and Fig. 8.Can find out that from measurement result the ,Ju Zhou center is nearer, wind speed is less.Especially be no more than 8m/s in radius 10cm with interior wind speed.If directly adopt dull and stereotyped deep bead by axial shift of wind footpath aweather the time, when axial wind runs into deep bead, high speed winds major part in the relatively large radius place can radially flow out from the exit of non-boundary constraint, simultaneously lower because of the wind speed of center position, and wind speed is poor larger, has part air-flow group and flow to center.The No way out of Qie Yin center, the air-flow group that the air-flow group of accumulation will inevitably the large radius of forced disturbance finds new outlets.Therefore adopt straight plate deep bead not only to make the center turbulization, and disturbance exit flow group, the wind energy loss caused.
When adopting deep bead shown in Fig. 6,7 to be placed on and axial flow air duct outlet opposite position, setting deep bead to the axial distance that air duct exports is that axial flow air duct exit separation is 15cm, at the air outlet place without the shunting guide plate, insert the 3rd shunting guide plate, insert the first and second two shunting guide plates, form respectively single air outlet, two air outlet, three air outlets.
The 3rd shunting guide plate is identical but vary in size with the second shunting guide board structure, includes the flat board perpendicular to axial flow air duct axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow air duct axis coaxle; Away from the revolution ring flat-plate end and dull and stereotyped tangent connection of axial flow air duct axis, on the revolution ring flat-plate, the latitude circle of diameter minimum is positioned at revolution ring flat-plate head end.First, second, the head end diameter (minimum latitude circular diameter) of the second shunting guide plate is respectively 600mm, 460mm, 540mm.
Single air outlet, two air outlet, three kinds of air outlet wind speed of three air outlets are carried out to simulation study, and simulation result is shown in Fig. 9-11.0.3(m on the abscissa of three figure in Fig. 9-11) correspond in the leftmost side air duct outlet of air outlet a bit, 0.45 (m) corresponds on the rightmost side deep bead of air outlet a bit.Corresponding single air outlet, place in the middle of shower nozzle (assembly) is placed in air outlet, widely different because of shower nozzle both sides wind speed, the left side that wind speed is lower can not be transported to the droplet of shower nozzle ejection on object far away effectively.For two air outlets, no matter which side air-out mouth shower nozzle (assembly) is placed in, because there is certain size in shower nozzle itself, all can not utilize preferably the wind speed of two air outlets.For three air outlets, wind speed at whole air outlet is significantly improved obviously, and when the second air outlet (centre air vent) that shower nozzle (assembly) is placed between the first shunting guide plate and the second shunting guide plate is located, can be with certain cone angle ejection from the droplet of Conic nozzle ejection, although under the higher wind effect, the cone angle sprayed is little when calm, but still there is certain spray regime, therefore the droplet that enters both sides air outlet (the first air outlet and the 3rd air outlet) can be proceeded again to carry under the larger wind speed in both sides, and the air-flow group that the higher wind speed in both sides also is conducive to reduce mid portion directly contacts the decay that the formation boundary layer causes air velocity with outside air.
The wind speed in table 1 air duct exit
Radius/cm 5 10 15 20 25 30
Wind speed/m/s 2.6 7.2 11.6 14.7 17.4 19.1
Present technique has solved axial flow that the orchard air-assisted type spraying machine produces by axial flow blower in transfer the radial air flow process to, the axle center position is understood turbulization group, air outlet place wind field wind speed is inhomogeneous, make liquid droplet penetration power deficiency between the top fruit sprayer internal lobe, cause that droplet carries less than fruit tree center and tree crown tip position place by wind-force, can not obtain comprehensively the effectively problem of control efficiency.Present technique is the three shunting wind-force steering diversion devices that are combined to form with the shunting guide plate by deflection cone, avoid the formation of axle center position turbulent flow group, can be effectively by axial wind-force than the slight drag guiding, to form radially wind-force, and by three shunting wind-force steering diversion devices, air quantity is carried out rationally effectively distributing, carry the droplet distance thereby greatly improve fan efficiency and wind-force, finally reach penetration of droplets ability and the coverage that improves orchard sprayer and prevent and treat efficiency.
Adopt deflection cone can effectively avoid the axial flow group produced by axial flow blower in transferring the radial air flow process to, the turbulent flow group phenomenon caused in the backboard center, reduce the wind energy loss.Because being used in the axial flow blower air duct limited length on orchard sprayer, the axial flow that the axial flow blower rotation produces is in the air duct exit, axle center position wind speed is minimum, approach air duct inner circle position wind speed the highest, and wind speed almost is linear attenuation along radial direction by air duct inwall Zhi Zhou center.If directly adopt the flat back plate without deflection cone, axial flow directly clashes into backboard, in forcing the air-flow steering procedure, because of air duct center position wind speed lower, near part high velocity air center can the turning center low regime cause the turbulent flow phenomenon, and turbulent flow group air-flow can't be accumulated at center and also can flow out to the air outlet place, again disturbance the whole air-flow flowed to outlet, cause very large wind energy loss.Therefore adopt deflection cone, can suitably improve air duct center air velocity, adopt bus is that the arc transition structure of camber line can be drawn the directed radial air outlet with less resistance by axial flow and flowed out simultaneously, and the air-flow turned to through guiding by center position can drive large radius high velocity air and turn to together, avoid high velocity air directly to clash into the wind energy loss that backboard causes, thereby can effectively improve the uniformity of air outlet wind speed and air flow direction.
The orchard air-assisted sprayer adopts three shunting wind-force steering diversion devices, is that the axial wind shunting that axial flow blower is produced guides into three part footpaths aweather, can effectively improve the wind speed uniformity of air outlet.Nozzle component is placed in the interlude air outlet, drip except the air-flow in interlude can further be atomized into mist by wind-force by the thick droplet of shower nozzle ejection, and rapidly shower nozzle is transferred out along wind-force direction radially with the droplet stream forcibly changing direction of the scattering of certain cone angle ejection.The air-flow of exporting in the section of both sides is rolled into a ball and the droplet entered in this wind ranges further can be realized carrying, and the direct formation boundary layer that contacts with outside air of air-flow group of avoiding interlude to be loaded with a large amount of droplets causes the quick relaxation phenomenon of air velocity.Such structure can improve the uniformity of whole outlet wind speed, with minimizing, exports the radially scattering of wind-force, thereby can improve effective fed distance of droplet.
The characteristics of this sprayer:
1, two shunting guide plates become three part radial air flows by the axial flow drainage.Such structural design can improve the wind speed uniformity at air outlet place greatly, thereby has improved the remote transmittability of wind-force; Improve wind-force to the conveying capacity of droplet and penetrate the ability between closely knit tree crown leaf.
2,shower nozzle is placed in interlude air outlet place, makes the droplet of shower nozzle ejection through the further atomization of wind-force, and sprays from each shower nozzle the taper droplet group formed and radially the wind-force effect, forcing to make droplet to change direction, unanimously along wind-force direction radially, moves.Therefore, such structural design, can make droplet obtain rapidly kinetic energy, improves conveying capacity and the penetration capacity of droplet, reduces pesticide droplet and scatter to non-target area.

Claims (2)

1. an air-assisted sprayer unit, is characterized in that: comprise with the axial flow air duct and export relative backboard, the deflection cone coaxial with the axial flow air duct is set on backboard; Also be provided with the first shunting guide plate and the second shunting guide plate between axial flow air duct and backboard, the axial flow flowed out from the axial flow air duct forms three part radial air flows under the drainage guiding of the first shunting guide plate, the second shunting guide plate and deflection cone; This three parts radial air flow respectively between the housing of axial flow air duct and the first shunting guide plate, between the first shunting guide plate and the second shunting guide plate, second shunt between guide plate and backboard and flow out; Shower nozzle for spraying is placed between the first shunting guide plate and the second shunting guide plate.
2. air-assisted sprayer unit as claimed in claim 1, its feature exists: the first shunting guide plate is identical with the second shunting guide board structure, include the flat board perpendicular to axial flow air duct axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow air duct axis coaxle; Revolution ring flat-plate end and flat board away from axial flow air duct axis join, and on the revolution ring flat-plate, the latitude circle of diameter minimum is positioned at revolution ring flat-plate head end.
3. air-assisted sprayer unit as claimed in claim 2, its feature exists: on the revolution ring flat-plate of the first shunting guide plate, minimum latitude diameter of a circle is greater than minimum latitude diameter of a circle on the revolution ring flat-plate of the second shunting guide plate.
4. air-assisted sprayer unit as claimed in claim 1, its feature exists: the water conservancy diversion element of a cone is camber line.
5. a sprayer, its feature exists: it comprises the described arbitrary air-assisted sprayer unit of claim 1-4 and is arranged on the axial flow blower in the axial flow air duct.
CN 201210322976 2012-09-04 2012-09-04 Spraying machine and air supply spraying device thereof Active CN102783476B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204538894U (en) * 2015-03-20 2015-08-05 常州格力博有限公司 Axial-flow blower motor preposition structure
CN105240941A (en) * 2015-10-15 2016-01-13 珠海格力电器股份有限公司 Air conditioning device and control method thereof
CN106379241A (en) * 2016-10-31 2017-02-08 北京新能源汽车股份有限公司 Rearview mirror for vehicles
CN109329251B (en) * 2018-11-19 2023-10-20 华南农业大学 Air duct structure of orchard air-assisted sprayer
CN112154285A (en) * 2019-11-04 2020-12-29 深圳市大疆创新科技有限公司 Flow field adjusting assembly, flow meter, spraying device and movable platform

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CN202237659U (en) * 2011-07-25 2012-05-30 广东风华环保设备有限公司 Air supply type environment-friendly spraying deduster
CN202385650U (en) * 2011-12-27 2012-08-22 富士特有限公司 Pneumatic conveying type full-range uniform mist sprayer

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RU2017420C1 (en) * 1991-05-22 1994-08-15 Богданов Александр Викторович Liquid sprayer
CN2141738Y (en) * 1991-12-31 1993-09-08 江苏工学院 Axial flow air-assisted electrostatic spraying device
CN201510958U (en) * 2009-10-15 2010-06-23 南京林业大学 Double flow passage air-assisted sprayer unit
CN202237659U (en) * 2011-07-25 2012-05-30 广东风华环保设备有限公司 Air supply type environment-friendly spraying deduster
CN202385650U (en) * 2011-12-27 2012-08-22 富士特有限公司 Pneumatic conveying type full-range uniform mist sprayer

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Application publication date: 20121121

Assignee: Nantong Guangyi Electromechanical Co., Ltd.

Assignor: Nanjing Forestry University

Contract record no.: 2016320000083

Denomination of invention: Spraying machine and air supply spraying device thereof

Granted publication date: 20131225

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Effective date of registration: 20181210

Address after: 226631 No. 11 Baochang North Road, Libao Town, Haian City, Nantong City, Jiangsu Province

Patentee after: Nantong Guangyi Electromechanical Co., Ltd.

Address before: No. 159, dragon pan Road, Nanjing, Jiangsu

Patentee before: Nanjing Forestry University

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