CN102783476A - Spraying machine and air supply spraying device thereof - Google Patents
Spraying machine and air supply spraying device thereof Download PDFInfo
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- CN102783476A CN102783476A CN2012103229761A CN201210322976A CN102783476A CN 102783476 A CN102783476 A CN 102783476A CN 2012103229761 A CN2012103229761 A CN 2012103229761A CN 201210322976 A CN201210322976 A CN 201210322976A CN 102783476 A CN102783476 A CN 102783476A
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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
Technical field
The present invention relates to sprayer, relate in particular to the efficient air-assisted spraying device of orchard sprayer.
Background technology
Existing all kinds of orchards air-assisted type spraying machine is structurally relatively more traditional, single.Be generally single air outlet or two shunting air outlets.This structure wind loss is bigger, and the wind speed uniformity is relatively poor, and the blower fan wind-force fed distance of power of the same race is little, and penetration capacity is poor between wind-force conveying droplet leaf, and the agricultural chemicals availability is low, and control efficiency is poor.
Summary of the invention
The purpose of present technique provides a kind of uniformity that improves whole outlet wind speed, exports the scattering of (radially) wind-force with minimizing, thereby can improve the air-assisted spraying device of effective fed distance of droplet.
This air-assisted spraying device comprises and the relative backboard of axial flow air duct outlet, and the deflection cone coaxial with the axial flow air duct is set on the backboard; Between axial flow air duct and backboard, also be provided with the first shunting guide plate and the second shunting guide plate, the axial flow that flows 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 the backboard and flow out; The shower nozzle that is used to spray places between the first shunting guide plate and the second shunting guide plate.
The beneficial effect of present technique: present technique changes axial flow and forms the radial air flow that flows out from three outlets (the 3rd outlet between second outlet, the second shunting guide plate and the backboard between first outlet between the housing of axial flow air duct and the first shunting guide plate, the first shunting guide plate and the second shunting guide plate); The even performance of whole air outlet wind speed is significantly improved; And when nozzle component places the centre air vent place; Can be from the droplet of Conic nozzle ejection with certain cone angle ejection; Although under the higher wind effect; The cone angle that sprays is little when calm; But still having certain spray regime, the droplet that therefore gets into the both sides air outlet can be proceeded to carry under the big wind speed in both sides again, and the air-flow group that the higher wind speed in both sides also helps reducing interlude directly contacts the decay that the formation boundary layer causes air velocity with outside air.
Above-mentioned efficient air-assisted spraying device, the first shunting guide plate is identical with the second shunting guide board structure, includes the flat board perpendicular to the axial flow blower axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow blower axis coaxle; Join with flat board away from the revolution ring flat-plate of axial flow air duct axis is terminal, the minimum latitude circle of diameter is positioned at revolution ring flat-plate head end on the revolution ring flat-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 on the revolution ring flat-plate of the first shunting guide plate.
Above-mentioned efficient air-assisted spraying device, the water conservancy diversion element of a cone is a 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 spraying device and the axial flow blower that is arranged in the axial flow air duct.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is the overall construction drawing of orchard sprayer.
Fig. 2 is the front view of the first shunting guide plate.
Fig. 3 is the left view of the first shunting guide plate.
Fig. 4 is the front view of the second shunting guide plate.
Fig. 5 is the left view of the second shunting guide plate.
Fig. 6 is the front view of deep bead.
Fig. 7 is the left view of 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 spraying device 100 and the axial flow blower 200 that is arranged in the axial flow air duct.
The air-assisted spraying device comprises and the relative backboard 2 of axial flow wind air duct 1 outlet, and the deflection cone 3 coaxial with the axial flow air duct is set on the backboard.Backboard 2 is an integral body with deflection cone 3, forms deep bead.Between axial flow air duct and backboard, also be provided with the first shunting guide plate 4 and second and shunt guide plate 5, shunt guide plate 4, second from the axial flow of axial flow air duct outflow first and shunt formation three part radial air flows under the drainage guiding of 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 formation first air outlet 6 between the guide plate from the housing and first of axial flow air duct; Form between second air outlet, 7, the second shunting guide plates and the backboard between the first shunting guide plate and the second shunting guide plate and form the 3rd air outlet 8.The shower nozzle that is used to spray (assembly) 11 places in second air outlet 7.
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 the axial flow blower axis, the revolution ring flat-plate 10 that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow blower axis coaxle.Away from the revolution ring flat-plate end and dull and stereotyped tangent connection of axial flow air duct axis, the minimum latitude circle of diameter is positioned at revolution ring flat-plate head end on the revolution ring flat-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 on the revolution ring flat-plate of the first shunting guide plate.
Selecting the air duct diameter for use is 700mm, axial length 580mm, rotation speed of fan 1350rpm.Under the situation of air duct no any deep bead of outlet and shunting guide plate, measure the wind speed in air duct exit, measuring point is for being positioned on the terminal cross section of air duct apart from axle different distance place, center, i.e. different radii place.Measure the result and see table 1 and Fig. 8.Can find out that from measurement result near more apart from the axle center, wind speed is more little.Especially be in radius 10cm and be no more than 8m/s with interior wind speed.If directly adopt dull and stereotyped deep bead with axial shift of wind footpath aweather the time; When axial wind runs into deep bead; The high speed winds major part that is in than the long radius place can radially flow out from the exit of non-boundary constraint; Lower because of the wind speed of center position simultaneously, and the wind speed difference is bigger, has part air-flow group and flows to the center.And because of the center No way out, the air-flow group that the air-flow group of accumulation will inevitably forced disturbance long radius place 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 adopt Fig. 6, deep bead shown in 7 is placed on and axial flow air duct outlet opposite position; The axial distance of setting the outlet of deep bead to air duct is that axial flow air duct exit separation is 15cm; Do not have the shunting guide plate at the air outlet place, insert the 3rd shunting guide plate, insert the first and second two shunting guide plates, form single air outlet, two air outlet, three air outlets respectively.
The 3rd shunting guide plate is identical but vary in size with the second shunting guide board structure, includes the flat board perpendicular to the axial flow blower axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow blower axis coaxle; Away from the revolution ring flat-plate end and dull and stereotyped tangent connection of axial flow air duct axis, the minimum latitude circle of diameter is positioned at revolution ring flat-plate head end on the revolution ring flat-plate.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 simulation study, and simulation result is seen Fig. 9-11.Among Fig. 9-11 on the abscissa of three figure 0.3 (m) 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, when shower nozzle (assembly) places the air outlet middle, 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 the object far away effectively.For two air outlets,,, all can not utilize the wind speed of two air outlets preferably because of there is certain size in shower nozzle itself no matter which side air-out mouth shower nozzle (assembly) places.For three air outlets; Wind speed at whole air outlet is significantly improved obviously; And, shower nozzle (assembly) locates when placing second air outlet (centre air vent) between the first shunting guide plate and the second shunting guide plate; Can be from the droplet of Conic nozzle ejection with certain cone angle ejection; Although under the higher wind effect, the cone angle of injection is little when calm, but still has certain spray regime; Therefore the droplet that gets into both sides air outlet (first air outlet and the 3rd air outlet) can be proceeded to carry under the big wind speed in both sides again, and the air-flow group that the higher wind speed in both sides also helps reducing 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/ | 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 that soup droplet penetration power between the top fruit sprayer internal lobe is not enough; 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 with the three shunting wind-force steering diversion devices that are combined to form of deflection cone with the shunting guide plate; Avoid a formation of center position turbulent flow group; Can effectively axial wind-force be formed radially wind-force to guide than slight drag; And through three shunting wind-force steering diversion devices air quantity is carried out rationally effectively distributing, thereby improve fan efficiency greatly and wind-force is carried the droplet distance, finally reach droplet penetration capacity and the coverage that improves orchard sprayer and prevent and treat efficient.
The axial flow group that the employing deflection cone can effectively be avoided being produced by axial flow blower is in transferring the radial air flow process to, and the turbulent flow group phenomenon that causes in the backboard center reduces the wind energy loss.Because of being used in the axial flow blower air duct limited length on the 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; The highest near circle position wind speed in the air duct, and wind speed almost is linear attenuation along radial direction by air duct inwall to axle center.If directly adopt the flat back plate of no 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 the center part high velocity air can the turning center low regime cause the turbulent flow phenomenon; And turbulent flow group air-flow can't be accumulated at the center and also can flow out to the air outlet place, again disturbance the whole air-flow that flows to outlet, cause very big wind energy loss.Therefore adopt deflection cone; Can suitably improve air duct center air velocity; Adopting bus simultaneously is that the arc transition structure of camber line can flow out with less resistance guiding axial flow to air outlet radially; And can drive long radius place high velocity air by the air-flow that center position turns to through guiding 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.
Orchard air-assisted spraying machine adopts three shunting wind-force steering diversion devices, is the axial wind shunting that axial flow blower produces is guided into three parts footpath aweather, can effectively improve the wind speed uniformity of air outlet.Nozzle component places in the interlude air outlet; Drip except the air-flow in the interlude can further be atomized into mist by wind-force with the thick droplet of shower nozzle ejection, and rapidly shower nozzle is promptly 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 output is rolled into a ball and can the droplet in this wind ranges of entering further realized carrying in the section of both sides, 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, exports the radially scattering of wind-force with minimizing, thereby can improve effective fed distance of droplet.
The characteristics of this sprayer:
1. two shunting guide plates become three part radial air flows with 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; Promptly improve wind-force to the conveying capacity of droplet with penetrate the ability between closely knit tree crown leaf.
2. shower nozzle places interlude air outlet place; The droplet of shower nozzle ejection is further atomized through wind-force; And spray the taper droplet group that forms from each shower nozzle and radially forcing to make droplet to change direction under the wind, promptly consistently move along wind-force direction radially.Therefore, such structural design can make droplet snatch kinetic energy, improves the conveying capacity and the penetration capacity of droplet, reduces pesticide droplet and scatters to non-target area.
Claims (5)
1. an air-assisted spraying device is characterized in that: comprise and the relative backboard of axial flow air duct outlet, the deflection cone coaxial with the axial flow air duct is set on the backboard; Between axial flow air duct and backboard, also be provided with the first shunting guide plate and the second shunting guide plate, the axial flow that flows 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 the backboard and flow out; The shower nozzle that is used to spray places between the first shunting guide plate and the second shunting guide plate.
2. efficient air-assisted spraying device as claimed in claim 1; Its characteristic exists: the first shunting guide plate is identical with the second shunting guide board structure; Include the flat board perpendicular to the axial flow blower axis, the revolution ring flat-plate that bus is camber line, revolution ring flat-plate centre of gyration line and axial flow blower axis coaxle; Join with flat board away from the revolution ring flat-plate of axial flow air duct axis is terminal, the minimum latitude circle of diameter is positioned at revolution ring flat-plate head end on the revolution ring flat-plate.
3. efficient air-assisted spraying device as claimed in claim 2, its characteristic exists: 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 on the revolution ring flat-plate of the first shunting guide plate.
4. efficient air-assisted spraying device as claimed in claim 1, its characteristic exists: the water conservancy diversion element of a cone is a camber line.
5. sprayer, its characteristic exists: it comprises the described arbitrary air-assisted spraying device of claim 1-4 and is arranged on the axial flow blower in the axial flow air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210322976 CN102783476B (en) | 2012-09-04 | 2012-09-04 | Spraying machine and air supply spraying device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210322976 CN102783476B (en) | 2012-09-04 | 2012-09-04 | Spraying machine and air supply spraying device thereof |
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| Publication Number | Publication Date |
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| CN102783476A true CN102783476A (en) | 2012-11-21 |
| CN102783476B CN102783476B (en) | 2013-12-25 |
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| CN 201210322976 Active CN102783476B (en) | 2012-09-04 | 2012-09-04 | Spraying machine and air supply spraying device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2016150029A1 (en) * | 2015-03-20 | 2016-09-29 | 常州格力博有限公司 | Preposed structure of motor for axial flow air blower |
| CN106379241A (en) * | 2016-10-31 | 2017-02-08 | 北京新能源汽车股份有限公司 | rear-view mirror for vehicle |
| CN109329251A (en) * | 2018-11-19 | 2019-02-15 | 华南农业大学 | A kind of orchard air-assisted sprayer Wind cylinder structure |
| 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150029A1 (en) * | 2015-03-20 | 2016-09-29 | 常州格力博有限公司 | Preposed structure of motor for axial flow air blower |
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| CN106379241A (en) * | 2016-10-31 | 2017-02-08 | 北京新能源汽车股份有限公司 | rear-view mirror for vehicle |
| CN109329251A (en) * | 2018-11-19 | 2019-02-15 | 华南农业大学 | A kind of orchard air-assisted sprayer Wind cylinder structure |
| 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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| CN102783476B (en) | 2013-12-25 |
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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 License type: Exclusive License Record date: 20160302 |
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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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