CN110999892B - An air flow guide device for an orchard air-delivered sprayer - Google Patents

Abstract

The invention relates to an air flow guide device for an orchard air-supplied sprayer, comprising an axial guide vane, a middle guide plate, a rear guide plate, an upper guide plate, a lower guide plate and a mounting plate; The axial and rotating airflow generated by the rotation of the fan blade is rectified into an axial moving airflow within the circumference of the axial guide vane; the middle deflector guides the axial moving airflow within the circumference of the axial guide vane. The part of the airflow that is shielded by the plate is the first layer of radial air supply air flow; the rear guide plate guides the part of the airflow that is not shielded by the middle guide plate in the axial movement airflow within the circumference of the axial guide vane into the second layer. The upper and lower baffles make the angle between the upper boundary of the uppermost superimposed radial air supply and the vertical axis to be 20°, and the lowermost superimposed radial air supply The angle between the lower boundary of the airflow and the vertical axis is 125°.

Description

An air flow guide device for an orchard air-delivered sprayer

technical field

The invention belongs to the field of agricultural plant protection machinery, in particular to an air flow guiding device of an orchard air-driven sprayer.

Background technique

Chemical control of orchard pests and diseases is currently the fastest and most effective method to control pests and diseases. Among them, air-assisted spraying is an advanced and efficient application technology recommended by the United Nations Food and Agriculture Organization, and is internationally recognized as an efficient ground application technology. The orchard air-supplied sprayer is a sprayer with both a liquid pump and a fan. The liquid pressure is used to atomize the liquid into mist droplets, and then the mist droplets are transported by the airflow of the fan. The fan generates airflow to further atomize the mist droplets. At the same time, the leaves are blown to make the droplets penetrate into the interior of the canopy, and it can also blow the droplets to various parts of the fruit tree, and the front and back of the leaves can be well applied.

At present, the wind-generating devices of orchard air-driven sprayers basically use axial fans. The airflow generated by the rotation of the axial fan blades needs to be converted into radial airflow along the spray direction through the deflector, so the deflector is extremely large. An essential part of most orchard air blown sprayers. At present, the fan deflectors in the prior art are basically of simple design and convert the airflow into a 360° indistinguishable radial airflow. Such airflow does not match the wind field required for orchard spraying, which not only causes a lot of waste of wind energy, And it is not conducive to the airflow fully blowing into the canopy of the fruit tree and blowing the leaves to make the liquid medicine fully fall on the target.

SUMMARY OF THE INVENTION

In view of the above-mentioned technical problems, the purpose of the present invention is to provide an air flow diversion device of an orchard air-delivered sprayer, so as to realize that the diversion wind field is blown to the fruit trees more, and to better satisfy the effect of the wind force on the medicinal liquid in the spraying operation. The conveying function of the fan makes more full use of the wind energy generated by the fan, so that the wind blows more into the canopy and blows the leaves, so that the liquid medicine can fall on the target more fully and improve the utilization rate of the liquid medicine.

In order to achieve the above object, the present invention provides the following technical solutions:

An air flow guide device for an orchard air-delivered sprayer, the air flow guide device includes an axial guide vane 7, a middle guide plate 2, a rear guide plate 3, an upper guide plate 1, a lower guide plate 6 and an installation board 4;

The rear deflector 3 is fixed on the middle of the mounting plate 4; a pair of left-right symmetrical upper deflectors 1 and a pair of left-right symmetrical lower deflectors 6 are respectively fixed on the upper and lower parts of the mounting plate 4; The middle deflector 2 is arranged in front of the rear deflector 3, and is fixedly connected to the mounting plate 4 through the mounting plate connecting shaft 5, and the middle deflector 2 and the rear deflector 3 are concentric; the axial guide vane 7 is arranged in front of the middle deflector 2, and is located on the air outlet side of the fan blade 8 of the fan 10, and is fixed in the air duct 9 of the fan 10; the axial guide vane 7 rotates the fan blade 8 to generate The axial and rotating airflow is rectified into an axial moving airflow within the circumference of the axial guide vane 7;

The middle deflector 2 guides the part of the airflow that is shielded by the middle deflector 2 in the axial moving airflow within the circumference of the axial guide vane 7 into the first layer of radial airflow; the rear deflector 3. Guide the part of the airflow that is not shielded by the middle guide plate 2 in the axial moving airflow within the circumferential range of the axial guide vane 7 into the second layer of radial air supply airflow;

The middle deflector 2 and the rear deflector 3 both include a plurality of pairs of left-right symmetrical and inclined upward deflector channels composed of wind deflectors; the deflector channels of the middle deflector 2 and the rear deflector 3 The diversion channels are in one-to-one correspondence, so that the first layer of radial air supply air and the second layer of radial air supply air flow form multiple pairs of left-right symmetrical superimposed radial air supply air flows, and each superimposed radial air supply air flow is Corresponding to a droplet nozzle 13;

The upper air deflector 1 and the lower air deflector 6 further change the wind angle of the uppermost pair of superimposed radial air supply airflows and the lowermost pair of superimposed radial air supply air currents respectively, so that the uppermost superimposed diameter The included angle between the upper boundary of the windward airflow and the vertical axis is 20°, and the included angle between the lower boundary of the lowermost superimposed radial airflow and the vertical axis is 125°.

The middle guide plate 2 is in the shape of an incomplete annular shape with an opening at the bottom, including an arc-shaped guide plate 201 with an opening at the bottom and an arc-shaped guide plate fixed on the inner edge of the arc-shaped guide plate 201. The air guide side plate 202, and a plurality of pairs of middle air guide plates fixed on the arc-shaped air guide bottom plate 201 and the arc-shaped air guide side plate 202 in turn from top to bottom; The inner end of the arc-shaped air guide side plate 202 and the outer end away from the inner end, as well as the front edge and the rear edge; The vertical axis of the plate 202 is arranged symmetrically on the left and right; the arc-shaped air guide bottom plate 201 and the arc-shaped air guide side plate 202 are formed by the adjacent middle air guide plates on the left and the adjacent middle air guide plates on the right side. A plurality of left and right symmetrical radial guide flow channels.

At least one pair of middle air guide plates has a curved surface portion, and the middle air guide plates transition from the inner end to the outer end curved surface, and from the front edge to the rear edge curved surface.

The lower opening angle of the arc-shaped guide bottom plate 201 and the arc-shaped guide side plate 202 is 40°.

Five pairs of middle air guide plates are arranged on the arc-shaped air guide bottom plate 201 and the arc-shaped air guide side plate 202 of the middle air guide plate 2, which are respectively the first middle air guide plate 203 and the second middle air guide plate from top to bottom. The second middle air deflector 204 , the third middle air deflector 205 , the fourth middle air deflector 206 and the fifth middle air deflector 207 ; The area between the second middle air guide plate 204 and the third middle air guide plate 205 constitutes the second middle air guide channel; the third middle air guide plate 205 and the fourth middle air guide plate 205 The area between the air guide plates 206 constitutes the third middle air guide flow channel; the area between the fourth middle air guide plate 206 and the fifth middle air guide plate 207 constitutes the fourth middle air guide channel;

The axis of the first middle air deflector 203 forms an included angle of 45° with the horizontal plane, and has a curved surface portion; On the vertical axis; the included angle _α15 between the rear edge of the outer end of the first middle air guide plate 203 and the vertical axis of the orthographic projection of the arc-shaped air guide side plate 202 is 30°;

The second middle air guide plate 204 is located on the extension line of the radius of the orthographic projection of the arc-shaped air guide side plate 202, and the angle _α13 between the second middle air guide plate 204 and the horizontal plane is 36°, which is 36° with the circle. The included angle α7 of the vertical axis of the orthographic projection of the arc _- shaped deflector side plate 202 is 54°;

The angle _α14 between the front edge of the third middle wind deflector 205 and the horizontal plane is 25°, and the horizontal height of the outer rear edge of the third middle wind deflector 205 is higher than the third middle wind deflector The horizontal height of the inner front edge of the plate 205; the inner front edge of the third middle air deflector 205 is located on the horizontal axis of the orthographic projection of the arc-shaped air deflector side plate 202, and the third middle air deflector 205 The connection line between the front edge of the inner end and the center of the orthographic projection of the arc-shaped deflector side plate 202 and the orthographic projection of the outer rear edge of the third middle air deflector 205 and the arc-shaped deflector side plate 202 The included angle α ₉ between the connecting lines between the centers of the circles is 12°;

The horizontal height of the outer rear edge of the fourth middle air deflector 206 is higher than the horizontal height of the inner front edge of the fourth middle air deflector 206; _The included angle α16 between the connecting line between the centers of the orthographic projections of the arc-shaped guide side plate 202 and the horizontal axis of the orthographic projection of the arc-shaped guide side plate 202 is 12°. The connecting line between the front edge of the inner end of the wind plate 206 and the center of the orthographic projection of the arc-shaped air guide side plate 202 and the outer rear edge of the fourth middle air guide plate 206 and the arc-shaped air guide side plate The included angle α ₁₀ between the connecting lines between the centers of the orthographic projections of 202 is 33°;

The horizontal height of the outer rear edge of the fifth middle wind deflector 207 is higher than the horizontal height of the inner front edge of the fifth middle wind deflector 207; The end of the lower opening of the arc-shaped air guide side plate 202 is fixedly connected, and the connection line between the front edge of the inner end of the fifth middle air guide plate 207 and the center of the orthographic projection of the arc-shaped air guide side plate 202 is the same as the circle. The angle α12 between the vertical axes of the orthographic projection of the arc-shaped air guide side plate 202 is ₂₀ °, and the front edge of the inner end of the fifth middle air guide plate 207 and the orthographic projection of the arc-shaped air guide side plate 202 are The included angle _α11 between the connecting line between the circle centers and the connecting line between the rear edge of the outer end of the fifth middle air deflector 207 and the center of the orthographic projection of the arc-shaped air deflecting side plate 202 is 38°.

The rear guide plate 3 includes a truncated truncated guide plate 301 and a guide cylinder 302 fixed on the inner edge of the truncated The rear air deflectors on the deflector 301 and the deflector cylinder 302; each pair of rear deflectors is arranged symmetrically with the vertical axis of the circular truncated deflector 301 or the deflector cylinder 302; It has an inner end fixed to the guide cylinder 302 and an outer end away from the inner end, as well as a front edge and a rear edge; It is arranged symmetrically on the left and right; the adjacent rear wind deflector on the left side of the circular truncated guide plate 301 and the guide cylinder 302 and the adjacent rear wind deflector on the right side form a plurality of left and right symmetrical radial rear diversion flows road.

At least one pair of rear air guide plates has a curved surface portion, and the rear air guide plates transition from the inner end to the outer end curved surface, and from the front edge to the rear edge curved surface.

Five pairs of rear air guide plates are arranged on the circular truncated air guide plate 301 and the guide cylinder 302 of the rear air guide plate 3, which are respectively the first rear air guide plate 303 and the second rear air guide plate from top to bottom. 304, the third rear air deflector 305, the fourth rear air deflector 306 and the fifth rear air deflector 307; the area between the first rear air deflector 303 and the second rear air deflector 304 constitutes the first rear air guide channel; the area between the second rear air guide plate 304 and the third rear air guide plate 305 constitutes the second rear air guide channel; the third rear air guide plate 305 and the fourth rear guide plate The area between the wind panels 306 constitutes the third rear guide flow channel; the area between the fourth rear wind guide plate 306 and the fifth rear wind guide plate 307 constitutes the fourth rear guide channel;

The front edge of the inner end of the first rear wind deflector 303 is located on the vertical axis of the orthographic projection of the guide cylinder 302 ; The included angle β ₁ between the connecting line between the centers of the circles and the vertical axis of the orthographic projection of the guide cylinder 302 is 20°;

The second rear wind deflector 304 is located on the extension line of the radius of the orthographic projection of the guide cylinder 302, and the angle β ₄ between the second rear wind guide plate 304 and the horizontal plane is 36°, which is 36° from the angle of the guide cylinder 302. The included angle β ₃ between the vertical axes of the orthographic projection is 54°;

The horizontal height of the outer end of the third rear wind deflector 305 is higher than the horizontal height of the inner end of the third rear wind deflector 305 ; The included angle β6 between the connecting line between the circle centers and the connecting line between the outer end of the third rear wind deflector 305 and the center of the orthographic projection of the guide cylinder 302 is 25°; _The angle β5 between the connection line between the outer end of the wind plate 305 and the center of the orthographic projection of the guide cylinder 302 and the vertical axis of the orthographic projection of the guide cylinder 302 is 84°;

The connecting line between the front edge of the inner end of the fourth rear air deflector 306 and the center of the orthographic projection of the air guide cylinder 302 and the center of the orthographic projection of the outer end rear edge of the fourth rear air deflector 306 and the air guide cylinder 302 The included angle β ₈ between the connecting lines is 32°; the connecting line between the front edge of the inner end of the fourth rear wind deflector 306 and the center of the orthographic projection of the guide cylinder 302 and the positive direction of the guide cylinder 302 The angle between the vertical axes of the projections is 36°;

The front edge of the inner end of the fifth rear wind deflector 307 is located on the vertical axis of the orthographic projection of the guide cylinder 302 ; The included angle β ₁₀ between the connecting line and the vertical axis of the orthographic projection of the guide cylinder 302 is 30°;

The included angle β ₁₁ between the front edge of the first rear air deflector 303 and the vertical plane where the rear end of the truncated air deflector 301 is located is 13°; The included angle between the vertical planes where the rear end of the flow plate 301 is located is 25°; the included angle between the front edge of the third rear air deflector 305 and the vertical plane where the rear end of the truncated air deflector 301 is located is 25°; The included angle between the front edge of the fourth rear air deflector 306 and the vertical plane where the rear end of the truncated air deflector 301 is located is 25°; The angle between the vertical planes where the ends lie is 13°.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention is combined with the relative position of the fan and the fruit tree during the spraying operation of the orchard air-driven sprayer. In the design of the airflow guide device, combined with the relevant theoretical knowledge of fluid mechanics, a new guide device is designed to change the airflow at the fan outlet. As shown in FIG. 8 , it converges in the range of γ1=20° to γ2=125° on the left side and γ3=20° to γ4=125° on the right side, so that the air flow will spray the medicines ejected from the droplet ejection head 13 . The liquid adheres to the canopy of the fruit tree 14 as much as possible, reducing the spraying to the space above the sprayer and the low area near the ground, thereby reducing the waste of liquid medicine and environmental pollution. In addition, the flow guiding device of the present invention can reduce the airflow velocity of the spray area of the airflow 15 near the upper boundary and the lower boundary, while the airflow velocity in the middle area can be increased by about 20%, which enhances the penetration of the airflow at the densest part of the canopy. penetration ability. In this way, the diversion wind field can blow more towards the fruit trees, which can better meet the conveying effect of the wind on the liquid medicine in the spray operation, and make more full use of the wind energy generated by the fan, so that the wind blows more into the canopy and blows the leaves. Thereby, the liquid medicine can fall on the target more fully, and the utilization rate of the liquid medicine can be improved.

2. The airflow guide device of the present invention has wide adaptability and portability, and can be applied to various mainstream air-driven sprayers by changing a small amount of adaptability parameters.

Description of drawings

Fig. 1a is the three-dimensional structure schematic diagram of the air flow guiding device of the orchard air-driven sprayer of the present invention;

Fig. 1b is the front view structure schematic diagram of the airflow guide device of the orchard air-driven sprayer of the present invention;

Fig. 1c is the side view structure schematic diagram of the air flow guiding device of the orchard air-driven sprayer of the present invention;

Fig. 1d is the exploded structure schematic diagram of the airflow guide device of the orchard air-driven sprayer of the present invention;

Fig. 2a is the three-dimensional structure schematic diagram of the middle deflector 2;

Figure 2b is a schematic front view of the structure of the middle deflector 2;

Figure 2c is a schematic side view of the structure of the middle deflector 2;

FIG. 3 a is a schematic three-dimensional structure diagram of the rear deflector 3;

FIG. 3b is a schematic front view of the rear deflector 3;

FIG. 3c is a schematic side view of the rear deflector 3;

FIG. 4 is a schematic structural diagram of the upper deflector 1;

5 is a schematic structural diagram of the lower deflector 6;

Fig. 6 is the assembly schematic diagram of the airflow guide device of the present invention, the fan blade 8 and the air duct 9;

7 is a schematic view of the assembly of the assembly composed of the airflow guide device of the present invention, the fan blade 8 and the air duct 9 on the sprayer frame 11;

FIG. 8 is a schematic diagram of the air-feeding spraying process of the orchard air-feeding sprayer equipped with the airflow guide device of the present invention.

The reference numbers are:

1 upper deflector

2 middle deflector 201 arc-shaped deflector bottom plate

202 Arc-shaped air deflector side plate 203 The first middle air deflector

204 The second middle wind deflector 205 The third middle wind deflector

206 Fourth middle wind deflector 207 Fifth middle wind deflector

3 Rear deflector 301 circular conical deflector

302 guide cylinder 303 first rear wind deflector

304 Second rear wind deflector 305 Third rear wind deflector

306 Fourth rear wind deflector 307 Fifth rear wind deflector

4 Mounting plate 5 Mounting plate connecting shaft

6 lower deflectors 7 axial guide vanes

8 fan blades 9 fan ducts

10 Fan 11 Sprayer Rack

12 Fan 13 Droplet Nozzle

14 Fruit Trees 15 Airflow

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

As shown in Figures 1a to 1d, an air flow guide device for an orchard air-driven sprayer includes an axial guide vane 7, a middle guide plate 2, a rear guide plate 3, an upper guide plate 1, and a lower guide plate 6 and mounting plate 4.

The rear deflector 3 is fastened to the middle of the mounting plate 4 by bolts; a pair of left-right symmetrical upper deflectors 1 and a pair of left-right symmetrical lower deflectors 6 are respectively fastened to the upper part of the mounting plate 4 by bolts and the lower part; the middle deflector 2 is arranged in front of the rear deflector 3, and is fixedly connected to the mounting plate 4 through the mounting plate connecting shaft 5, and the middle deflector 2 and the rear deflector 3 are concentric; The axial guide vane 7 is arranged in front of the middle guide plate 2 , is located on the air outlet side of the fan blade 8 of the fan 10 , and is fixedly connected in the air duct 9 of the fan 10 . The axial guide vane 7 rectifies the axially rotating airflow generated by the rotation of the fan blade 8 into an axial moving airflow within the circumference of the axial guide vane 7 .

The middle deflector 2 guides the part of the airflow that is shielded by the middle deflector 2 in the axial moving airflow within the circumference of the axial guide vane 7 into the first layer of radial airflow; the rear deflector 3. Guide the part of the airflow that is not shielded by the middle guide plate 2 in the axial moving airflow within the circumferential range of the axial guide vane 7 into the second layer of radial airflow.

The middle deflector 2 and the rear deflector 3 both include a plurality of pairs of left-right symmetrical and inclined upward deflector channels composed of wind deflectors; the deflector channels of the middle deflector 2 and the rear deflector 3 The diversion channels are in one-to-one correspondence, so that the first layer of radial air supply air and the second layer of radial air supply air flow form multiple pairs of left-right symmetrical superimposed radial air supply air flows, and each superimposed radial air supply air flow is Corresponds to one droplet discharge head 13 .

The upper air deflector 1 and the lower air deflector 6 further change the wind angle of the uppermost pair of superimposed radial air supply airflows and the lowermost pair of superimposed radial air supply air currents respectively, so that the uppermost superimposed diameter The included angle between the upper boundary of the windward airflow and the vertical axis is 20°, and the included angle between the lower boundary of the lowermost superimposed radial airflow and the vertical axis is 125°.

As shown in FIG. 8 , the airflow guided by the airflow guide device of the present invention converges in the range of γ1=20° to γ2=125° on the left side and γ3=20° to γ4=125° on the right side , so that the air flow attaches the liquid medicine sprayed by the droplet nozzle 13 to the canopy of the fruit tree 14 as much as possible, reducing the spray to the space above the sprayer and the low area near the ground, thereby reducing the waste of liquid medicine and environmental pollution.

As shown in Fig. 2a, Fig. 2b and Fig. 2c, the middle deflector 2 is an incomplete annular shape with an opening below; The arc-shaped guide bottom plate 201 and the arc-shaped guide side plate 202 fixed on the inner circular edge of the arc-shaped guide base plate 201, and a plurality of pairs of arc-shaped guide plates are sequentially fixed on the arc-shaped guide from top to bottom. the middle air guide plates on the bottom plate 201 and the arc-shaped air guide side plate 202, the middle air guide plates each have an inner end fixed to the arc-shaped air guide side plate 202 and an outer end away from the inner end, and The front edge and the rear edge; and each pair of middle air guide plates is symmetrically arranged with the vertical axis of the arc-shaped guide bottom plate 201 or the arc-shaped guide side plate 202; the arc-shaped guide bottom plate 201 and the arc-shaped guide plate The adjacent middle air guide plates on the left side and the adjacent middle air guide plates on the right side of the air guide side plate 202 form a plurality of left-right symmetrical radial middle air guide flow channels.

Preferably, at least one pair of middle wind deflectors has a curved surface portion, and the middle wind deflectors transition from the inner end to the outer end curved surface, and from the front edge to the rear edge curved surface.

Preferably, the lower opening angle of the arc-shaped air guide bottom plate 201 and the arc-shaped air guide side plate 202 is 40°.

In the embodiment of the present invention, five pairs of center air guide plates are arranged on the arc-shaped air guide bottom plate 201 and the arc-shaped air guide side plate 202 of the middle air guide plate 2, from top to bottom: the first A middle air deflector 203 , a second middle air deflector 204 , a third middle air deflector 205 , a fourth middle air deflector 206 and a fifth middle air deflector 207 . The area between the first middle air deflector 203 and the second middle air deflector 204 constitutes the first middle air deflector; the area between the second middle air deflector 204 and the third middle air deflector 205 constitutes The second middle air deflector; the area between the third middle air deflector 205 and the fourth middle air deflector 206 constitutes the third middle air deflector; the fourth middle air deflector 206 and the fifth middle air deflector The area between 207 constitutes the fourth middle guide flow channel.

The angles formed by the middle air deflectors involved in the following are all described based on the schematic front view structure of the middle air deflector 2 shown in FIG. 2 b .

The first middle wind deflector 203 not only plays the purpose of changing the wind direction, but also plays the role of gathering the wind volume downward. The axis of the first middle air deflector 203 forms an included angle of 45° with the horizontal plane, and has a curved surface portion; On the vertical axis; the included angle _α15 between the rear edge of the outer end of the first middle air guide plate 203 and the vertical axis of the orthographic projection of the arc-shaped air guide side plate 202 is 30°.

The position of the second middle wind deflector 204 is the most required wind field position for spraying operations, so a straight wind deflector is used to change the direction of the wind field. The second middle air guide plate 204 is located on the extension line of the radius of the orthographic projection of the arc-shaped air guide side plate 202, and the angle _α13 between the second middle air guide plate 204 and the horizontal plane is 36°, which is 36° with the circle. The included angle α ₇ of the vertical axis of the orthographic projection of the arc-shaped flow guide side plate 202 is 54°.

The third middle wind deflector 205 adopts an oblique straight wind deflector, which not only serves the purpose of changing the wind direction, but also plays the role of gathering the air volume of the upper part to the upper part. The angle _α14 between the front edge of the third middle wind deflector 205 and the horizontal plane is 25°, and the horizontal height of the outer rear edge of the third middle wind deflector 205 is higher than the third middle wind deflector The level of the front edge of the inner end of the plate 205. The inner front edge of the third middle air deflector 205 is located on the horizontal axis of the orthographic projection of the arc-shaped air deflector side plate 202 , that is, the inner front edge of the third middle air deflector 205 and the arc-shaped The included angle _α8 between the connecting line between the centers of the orthographic projections of the air guide side plate 202 and the vertical axis of the orthographic projection of the arc-shaped air guide side plate 202 is 90°, and the third middle air guide plate 205 The connection line between the front edge of the inner end and the center of the orthographic projection of the arc-shaped deflector side plate 202 and the orthographic projection of the outer rear edge of the third middle air deflector 205 and the arc-shaped deflector side plate 202 The included angle α ₉ between the lines connecting the centers of the circles is 12°.

The fourth middle wind deflector 206 not only plays the purpose of changing the wind direction, but also plays the role of gathering the wind volume to the upper part. The horizontal height of the outer rear edge of the fourth middle wind deflector 206 is higher than the horizontal height of the inner front edge of the fourth middle wind deflector 206 . The connecting line between the outer rear edge of the fourth middle air deflector 206 and the center of the orthographic projection of the arc-shaped air deflector side plate 202 and the horizontal axis of the orthographic projection of the arc-shaped air deflector side plate 202 The included angle _α16 is 12°, and the connecting line between the front edge of the inner end of the fourth middle air deflector 206 and the center of the orthographic projection of the arc-shaped air deflector side plate 202 is the same as the fourth middle air deflector. The included angle α10 between the connecting line between the rear edge of the outer end of the plate 206 and the center of the orthographic projection of the arc-shaped guide side plate 202 is ₃₃ °.

The fifth middle wind deflector 207 not only plays the purpose of changing the wind direction, but also plays the role of gathering a large amount of wind to the upper part. The horizontal height of the outer rear edge of the fifth middle wind deflector 207 is higher than the horizontal height of the inner front edge of the fifth middle wind deflector 207 . The inner front edge of the fifth middle air deflector 207 is fixedly connected to the end of the lower opening of the arc-shaped air deflector side plate 202, and the inner front edge of the fifth middle air deflector 207 is connected to the arc-shaped air deflector. The included angle α12 between the connecting line between the centers of the orthographic projections of the side plates 202 and the vertical axis of the orthographic projection of the arc-shaped air guide side plates 202 is ₂₀ °, and the inner end of the fifth middle wind deflector 207 The connection line between the front edge and the orthographic center of the arc-shaped deflector side plate 202 and the outer rear edge of the fifth middle air deflector 207 and the orthographic center of the arc-shaped deflector side plate 202 The included angle α ₁₁ between the connecting lines is 38°.

As shown in Figure 3a, Figure 3b and Figure 3c, the rear deflector 3 includes a frustum-shaped baffle 301 and a guide cylinder 302 fixed on the inner circular edge of the frustum-shaped baffle 301, and There are multiple pairs of rear air guide plates that are sequentially fixed on the circular truncated guide plate 301 and the guide cylinder 302 from top to bottom. They are arranged symmetrically on the left and right; the rear air guide plates have an inner end fixed to the air guide cylinder 302 and an outer end away from the inner end, as well as a front edge and a rear edge; The vertical axes of the flow plate 301 or the guide cylinder 302 are arranged symmetrically on the left and right; A plurality of left-right symmetrical radial rear guide flow channels are formed.

Preferably, at least one pair of rear wind deflectors has a curved surface portion, and the rear wind deflectors transition from the inner end to the outer end curved surface, and from the front edge to the rear edge curved surface.

In the embodiment of the present invention, five pairs of rear air deflectors are provided on the circular truncated air deflector 301 and the air guiding cylinder 302 of the rear air deflector 3 , which are respectively the first rear air deflector 303 , the second rear wind deflector 304 , the third rear wind deflector 305 , the fourth rear wind deflector 306 and the fifth rear wind deflector 307 . The area between the first rear air deflector 303 and the second rear air deflector 304 constitutes the first rear air deflector; the area between the second rear air deflector 304 and the third rear air deflector 305 The area constitutes the second rear air guide channel; the area between the third rear air guide plate 305 and the fourth rear air guide plate 306 constitutes the third rear air guide channel; the fourth rear air guide plate 306 and the fourth rear air guide plate 306 The area between the fifth rear air guide plates 307 constitutes the fourth rear air guide flow channel.

The included angles formed by the rear air deflectors involved in the following are all described based on the schematic front view structure of the rear air deflector 3 shown in FIG. 3 b .

The first rear wind deflector 303 not only plays the purpose of changing the wind direction, but also plays the role of collecting the wind volume downward. The front edge of the inner end of the first rear wind deflector 303 is located on the vertical axis of the orthographic projection of the guide cylinder 302 ; The included angle β ₁ between the line connecting the centers of the circles and the vertical axis of the orthographic projection of the guide cylinder 302 is 20°.

The second rear air guide plate 304 adopts a straight air guide plate. The second rear wind deflector 304 is located on the extension line of the radius of the orthographic projection of the guide cylinder 302, and the angle β ₄ between the second rear wind guide plate 304 and the horizontal plane is 36°, which is 36° from the angle of the guide cylinder 302. The angle β ₃ between the vertical axes of the orthographic projection is 54°.

The third rear air deflector 305 adopts an arc air deflector. The horizontal height of the outer end of the third rear wind deflector 305 is higher than the horizontal height of the inner end of the third rear wind deflector 305 . The connecting line between the inner end of the third rear air deflector 305 and the center of the orthographic projection of the air guide cylinder 302 and the outer end of the third rear air deflector 305 and the center of the orthographic projection of the air guide cylinder 302 The included angle β6 between the connecting lines is 25°; the connecting line between the outer end of the third rear wind deflector 305 and the center of the orthographic projection of the guide cylinder 302 and the orthographic projection of the guide cylinder 302 The included angle β ₅ between the vertical axes of , is 84°.

The fourth rear wind deflector 306 not only plays the purpose of changing the wind direction, but also plays the role of gathering the air volume from the lower part to the upper part. The connecting line between the front edge of the inner end of the fourth rear air deflector 306 and the center of the orthographic projection of the air guide cylinder 302 and the center of the orthographic projection of the outer end rear edge of the fourth rear air deflector 306 and the air guide cylinder 302 The included angle β ₈ between the connecting lines is 32°; the connecting line between the front edge of the inner end of the fourth rear wind deflector 306 and the center of the orthographic projection of the guide cylinder 302 and the positive direction of the guide cylinder 302 The angle between the vertical axes of the projections is 36°.

The fifth rear wind deflector 307 not only plays the purpose of changing the wind direction, but also plays the role of gathering a large amount of wind to the upper part. The front edge of the inner end of the fifth rear air deflector 307 is located on the vertical axis of the orthographic projection of the air guiding cylinder 302 ; The included angle β ₁₀ between the connecting line and the vertical axis of the orthographic projection of the guide cylinder 302 is 30°.

As shown in FIG. 3c, the angle β ₁₁ between the front edge of the first rear air deflector 303 and the vertical plane where the rear end of the truncated air deflector 301 is located is 13°; the front edge of the second rear air deflector 304 The included angle with the vertical plane where the rear end of the truncated baffle 301 is located is 25°; the included angle between the front edge of the third rear air baffle 305 and the vertical plane where the rear end of the truncated baffle 301 is located is 25°; the included angle between the front edge of the fourth rear air deflector 306 and the vertical plane where the rear end of the truncated air deflector 301 is located is 25°; the front edge of the fifth rear air deflector 307 and the truncated truncated deflector The included angle between the vertical planes where the rear end of the flow disc 301 is located is 13°.

As shown in FIG. 4 , the upper deflector 1 is arranged above the middle deflector 2 and the rear deflector 3 in an adjustable manner through the inclination angle of bolts, so as to further change the uppermost pair of superimposed radial air supply. The air blowing angle of the airflow,

As shown in FIG. 5 , the lower deflector 6 is arranged below the middle deflector 2 and the rear deflector 3 in an adjustable manner through the inclination angle of bolts, so as to further change the lowermost pair of superimposed radial air supply. The wind angle of the airflow.

As shown in FIG. 6 , the air duct 9 of the fan 10 is fixedly connected to the mounting plate 4 through the mounting plate connecting shaft 5 . As shown in FIG. 7 , the fan 10 and the airflow guide device are fixed on the sprayer frame 11 through the mounting plate 4; the transmission shaft of the sprayer is connected with the central axis of the fan blade 8 to drive the fan blade to rotate.

Although the embodiment of the present invention is based on a specific air-driven sprayer model and a specific fan structure, it is not limited to this. Most of the air-driven sprayers use similar airflow guide devices, and this design has a wide range of Portability, wide adaptability, through the change of a small amount of adaptability parameters, the invention is suitable for all kinds of mainstream air-driven sprayers.

Claims (6)

1. The utility model provides an orchard air-assisted sprayer's air current guiding device which characterized in that: the airflow guiding device comprises an axial guide vane (7), a middle guide plate (2), a rear guide plate (3), an upper guide plate (1), a lower guide plate (6) and a mounting plate (4);

the rear guide plate (3) is fixedly connected to the middle part of the mounting plate (4); a pair of upper guide plates (1) which are symmetrical left and right and a pair of lower guide plates (6) which are symmetrical left and right are respectively fixedly connected with the upper part and the lower part of the mounting plate (4); the middle guide plate (2) is arranged in front of the rear guide plate (3) and is fixedly connected with the mounting plate (4) through a mounting plate connecting shaft (5), and the middle guide plate (2) and the rear guide plate (3) are concentric; the axial guide vane (7) is arranged in front of the middle guide plate (2), is positioned at the air outlet side of a fan blade (8) of the fan (10), and is fixedly connected in an air duct (9) of the fan (10); the axial guide vane (7) rectifies the axial and rotating airflow generated by the rotation of the fan blade (8) into axial moving airflow in the circumferential range of the axial guide vane (7);

the middle guide plate (2) guides part of the axial movement airflow in the circumferential range of the axial guide blade (7) which is shielded by the middle guide plate (2) into a first layer of radial air supply airflow; the rear guide plate (3) guides part of the axial movement airflow in the circumferential range of the axial guide blade (7) which is not shielded by the middle guide plate (2) into a second layer of radial air supply airflow;

the middle guide plate (2) and the rear guide plate (3) respectively comprise a plurality of pairs of guide channels which are formed by air guide plates, are symmetrical left and right and are inclined upwards; the flow guide channels of the middle flow guide plate (2) correspond to the flow guide channels of the rear flow guide plate (3) one by one, so that the first layer of radial air supply airflow and the second layer of radial air supply airflow form a plurality of pairs of superimposed radial air supply airflow which are symmetrical left and right, and each superimposed radial air supply airflow corresponds to one liquid drop spray head (13);

the upper guide plate (1) and the lower guide plate (6) further change the air supply angles of the uppermost pair of superposed radial air supply air flows and the lowermost pair of superposed radial air supply air flows respectively, so that the included angle between the upper boundary of the uppermost superposed radial air supply air flow and a vertical axis is 20 degrees, and the included angle between the lower boundary of the lowermost superposed radial air supply air flow and the vertical axis is 125 degrees;

the middle guide plate (2) is in an incomplete ring shape with an opening at the lower part and comprises an arc-shaped guide bottom plate (201) with an opening at the lower part, an arc-shaped guide side plate (202) fixedly connected to the inner circle edge of the arc-shaped guide bottom plate (201), and a plurality of pairs of middle guide plates fixedly connected to the arc-shaped guide bottom plate (201) and the arc-shaped guide side plate (202) from top to bottom in sequence; the middle air deflectors are respectively provided with an inner end fixedly connected with the arc-shaped air guide side plate (202), an outer end far away from the inner end, a front edge and a rear edge; each pair of middle air deflectors are symmetrically arranged in the left and right direction along the vertical axis of the arc-shaped air guide bottom plate (201) or the arc-shaped air guide side plate (202); the arc-shaped diversion bottom plate (201) and the adjacent middle air deflector on the left side of the arc-shaped diversion side plate (202) and the adjacent middle air deflector on the right side form a plurality of bilaterally symmetrical radial middle diversion flow channels;

five pairs of air deflectors are arranged on the arc-shaped air guide bottom plate (201) and the arc-shaped air guide side plate (202) of the middle air guide plate (2) from top to bottom: the wind power generation device comprises a first middle wind deflector (203), a second middle wind deflector (204), a third middle wind deflector (205), a fourth middle wind deflector (206) and a fifth middle wind deflector (207); the area between the first middle air deflector (203) and the second middle air deflector (204) forms a first middle flow guiding channel; the area between the second middle air deflector (204) and the third middle air deflector (205) forms a second middle diversion flow channel; the area between the third middle air deflector (205) and the fourth middle air deflector (206) forms a third middle diversion flow channel; the area between the fourth middle air deflector (206) and the fifth middle air deflector (207) forms a fourth middle guide flow channel;

the axis of the first middle air deflector (203) forms an included angle of 45 degrees with the horizontal plane and is provided with a curved surface part; the front edge of the inner end of the first middle air deflector (203) is positioned on the vertical axis of the orthographic projection of the circular arc-shaped air deflector side plate (202); an included angle alpha between the rear edge of the outer end of the first middle air deflector (203) and the vertical axis of the orthographic projection of the circular arc-shaped air deflector side plate (202)₁₅Is 30 degrees;

the second middle air deflector (204) is positioned on the radius extension line of the orthographic projection of the circular arc-shaped air guide side plate (202), and the included angle alpha between the second middle air deflector (204) and the horizontal plane₁₃Is 36 degrees and forms an included angle alpha with the vertical axis of the orthographic projection of the circular arc diversion side plate (202)₇Is 54 degrees;

the included angle alpha between the front edge of the third middle air deflector (205) and the horizontal plane₁₄The horizontal height of the outer end rear edge of the third middle air guiding plate (205) is 25 degrees, and the horizontal height of the inner end front edge of the third middle air guiding plate (205) is higher than that of the outer end rear edge of the third middle air guiding plate; the front edge of the inner end of the third middle air deflector (205) is positioned on the horizontal axis of the orthographic projection of the circular arc-shaped air deflector side plate (202), and an included angle alpha is formed between a connecting line between the front edge of the inner end of the third middle air deflector (205) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202) and a connecting line between the rear edge of the outer end of the third middle air deflector (205) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202)₉Is 12 degrees;

the horizontal height of the outer end rear edge of the fourth middle air deflector (206) is higher than that of the inner end front edge of the fourth middle air deflector (206); an included angle alpha between a connecting line between the rear edge of the outer end of the fourth middle air deflector (206) and the center of the orthographic projection of the arc-shaped air deflector side plate (202) and the horizontal axis of the orthographic projection of the arc-shaped air deflector side plate (202)₁₆The angle is 12 degrees, and the angle between a connecting line between the front edge of the inner end of the fourth middle air deflector (206) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202) and a connecting line between the rear edge of the outer end of the fourth middle air deflector (206) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202)Included angle alpha₁₀Is 33 degrees;

the horizontal height of the rear edge of the outer end of the fifth middle air deflector (207) is higher than that of the front edge of the inner end of the fifth middle air deflector (207); the front edge of the inner end of the fifth middle air deflector (207) is fixedly connected with the end part of the lower opening of the circular arc-shaped air guide side plate (202), and the included angle alpha between the connecting line between the front edge of the inner end of the fifth middle air deflector (207) and the circle center of the orthographic projection of the circular arc-shaped air guide side plate (202) and the vertical axis of the orthographic projection of the circular arc-shaped air guide side plate (202)₁₂The included angle alpha is 20 degrees, and the included angle alpha is formed between the connecting line between the front edge of the inner end of the fifth middle air deflector (207) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202) and the connecting line between the rear edge of the outer end of the fifth middle air deflector (207) and the center of the orthographic projection of the circular arc-shaped air deflector side plate (202)₁₁Is 38 deg..

2. The airflow deflector of an orchard air-assisted sprayer according to claim 1, characterized in that: at least one pair of middle air deflectors has a curved surface part, and the middle air deflectors are in curved surface transition from the inner end to the outer end and in curved surface transition from the front edge to the rear edge.

3. The airflow deflector of an orchard air-assisted sprayer according to claim 1, characterized in that: the lower opening angle of the circular arc diversion bottom plate (201) and the circular arc diversion side plate (202) is 40 degrees.

4. The airflow deflector of an orchard air-assisted sprayer according to claim 1, characterized in that: the rear guide plate (3) comprises a truncated cone-shaped guide plate (301), a guide cylinder (302) fixedly connected to the inner circle edge of the truncated cone-shaped guide plate (301), and a plurality of pairs of rear guide plates which are sequentially and fixedly connected to the truncated cone-shaped guide plate (301) and the guide cylinder (302) from top to bottom; each pair of rear air deflectors are symmetrically arranged in the left and right direction along the vertical axis of the circular truncated cone-shaped guide disc (301) or the guide cylinder (302); the rear air deflectors are respectively provided with an inner end fixedly connected with the flow guiding cylinder (302), an outer end far away from the inner end, a front edge and a rear edge; each pair of rear air deflectors are symmetrically arranged in the left and right direction along the vertical axis of the circular truncated cone-shaped guide disc (301) or the guide cylinder (302); the round table-shaped guide disc (301) and the adjacent rear air guide plate on the left side of the guide cylinder (302) and the adjacent rear air guide plate on the right side form a plurality of bilaterally symmetrical radial rear guide flow channels.

5. The airflow deflector of an orchard air-assisted sprayer according to claim 4, characterized in that: at least one pair of rear air deflectors has a curved surface portion, and the rear air deflectors are in curved surface transition from the inner end to the outer end and from the front edge to the rear edge.

6. The airflow deflector of an orchard air-assisted sprayer according to claim 4, characterized in that: five pairs of rear air deflectors are arranged on the circular truncated cone-shaped guide disc (301) and the guide cylinder (302) of the rear guide plate (3) from top to bottom: a first rear air deflector (303), a second rear air deflector (304), a third rear air deflector (305), a fourth rear air deflector (306) and a fifth rear air deflector (307); the area between the first rear air deflector (303) and the second rear air deflector (304) forms a first rear guide flow channel; the area between the second rear air deflector (304) and the third rear air deflector (305) forms a second rear guide flow channel; a third rear guide flow channel is formed in the area between the third rear air deflector (305) and the fourth rear air deflector (306); a fourth rear guide flow channel is formed in the area between the fourth rear air deflector (306) and the fifth rear air deflector (307);

the front edge of the inner end of the first rear air deflector (303) is positioned on the vertical axis of the orthographic projection of the flow guiding cylinder (302); an included angle beta between a connecting line between the rear edge of the outer end of the first rear air deflector (303) and the center of the orthographic projection of the flow guiding cylinder (302) and the vertical axis of the orthographic projection of the flow guiding cylinder (302)₁Is 20 degrees;

the second rear air deflector (304) is positioned on the extended radius line of the orthographic projection of the flow guiding cylinder (302), and the included angle beta between the second rear air deflector (304) and the horizontal plane₄Is 36 degrees and forms an included angle beta with the vertical axis of the orthographic projection of the guide cylinder (302)₃Is 54 degrees;

of the outer end of the third rear air deflector (305)The horizontal height is higher than that of the inner end of the third rear air deflector (305); an included angle beta 6 between a connecting line between the inner end of the third rear air deflector (305) and the center of the orthographic projection of the guide cylinder (302) and a connecting line between the outer end of the third rear air deflector (305) and the center of the orthographic projection of the guide cylinder (302) is 25 degrees; an included angle beta between a connecting line between the outer end of the third rear air deflector (305) and the center of the orthographic projection of the guide cylinder (302) and the vertical axis of the orthographic projection of the guide cylinder (302)₅Is 84 degrees;

an included angle beta between a connecting line between the front edge of the inner end of the fourth rear air deflector (306) and the center of the orthographic projection of the guide cylinder (302) and a connecting line between the rear edge of the outer end of the fourth rear air deflector (306) and the center of the orthographic projection of the guide cylinder (302)₈Is 32 degrees; an included angle between a connecting line between the front edge of the inner end of the fourth rear air deflector (306) and the center of the orthographic projection of the guide cylinder (302) and the vertical axis of the orthographic projection of the guide cylinder (302) is 36 degrees;

the front edge of the inner end of the fifth rear air deflector (307) is positioned on the vertical axis of the orthographic projection of the guide cylinder (302); an included angle beta between a connecting line between the rear edge of the outer end of the fifth rear air deflector (307) and the center of the orthographic projection of the guide cylinder (302) and the vertical axis of the orthographic projection of the guide cylinder (302)₁₀Is 30 degrees;

an included angle beta between the front edge of the first rear air deflector (303) and a vertical plane where the rear end of the truncated cone-shaped deflector disc (301) is located₁₁Is 13 degrees; an included angle between the front edge of the second rear air deflector (304) and a vertical plane where the rear end of the circular truncated cone-shaped deflector (301) is located is 25 degrees; an included angle between the front edge of the third rear air deflector (305) and a vertical plane where the rear end of the truncated cone-shaped deflector (301) is located is 25 degrees; an included angle between the front edge of the fourth rear air deflector (306) and a vertical plane where the rear end of the truncated cone-shaped deflector (301) is located is 25 degrees; the included angle between the front edge of the fifth rear air deflector (307) and the vertical plane of the rear end of the truncated cone-shaped deflector disc (301) is 13 degrees.

Images