CN113546775B

CN113546775B - Atomizing disk, sprinkler and unmanned aerial vehicle

Info

Publication number: CN113546775B
Application number: CN202010333472.4A
Authority: CN
Inventors: 陈章; 李志勇
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2022-08-16
Anticipated expiration: 2040-04-24
Also published as: CN113546775A

Abstract

The invention discloses an atomizing disc, a spraying device and an unmanned aerial vehicle. Atomizing disk includes: the carousel, the carousel has the face of accepting, and the middle part of accepting the face is equipped with the feed liquor space, accepts to be equipped with many sand grips along the circumference interval on the face, accepts all to form centrifugal channel between face and arbitrary two adjacent sand grips, and every centrifugal channel all has inlet and hydrojet mouth, and the inlet is linked together with the feed liquor space, and the hydrojet mouth is close to the border setting of carousel in order to spill atomizing liquid. Wherein, the value range of the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space is Ra0.2-50 um. The atomizing disk provided by the invention has the advantages that the value range of the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space is Ra0.2-50 um. Thereby, the friction force of the liquid contacting with the inner surface of the centrifugal channel and/or the surface of the liquid inlet space can be improved, the atomization effect is improved, and the formation of fog drops is avoided.

Description

Atomizing disk, sprinkler and unmanned aerial vehicle

Technical Field

The invention relates to the field of unmanned aerial vehicles, in particular to an atomizing disc, a spraying device and an unmanned aerial vehicle.

Background

In recent years, with the development of multi-rotor aircrafts, the multi-rotor aircrafts have the advantages of flexibility, quick response, unmanned flight, low operation requirement and the like, so that the multi-rotor aircrafts are applied to a plurality of fields, particularly the field of agricultural plant protection. The rotation that sprinkler passes through atomizing disk and then atomizes the pesticide, makes the pesticide after the atomizing spray the plant again on, however, because atomizing disk's atomization effect is not good, easily produces and does not have atomizing droplet to the precision that the influence was sprayed.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides an atomizing disk to avoid generating fog drops and improve the atomizing effect.

The invention also provides a spraying device with the atomizing disk.

The invention further provides an unmanned aerial vehicle with the spraying device.

According to the embodiment of the invention, the atomizing disk comprises: the carousel, the carousel has the face of accepting, the middle part of accepting the face is equipped with the feed liquor space, it is equipped with many sand grips along the circumference interval on the face to accept, accept face and arbitrary adjacent two all form centrifugal channel, every between the sand grip centrifugal channel all has inlet and hydrojet mouth, the inlet with the feed liquor space is linked together, the hydrojet mouth is close to the border setting of carousel is with spilling atomizing liquid. Wherein, the value range of the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space is Ra0.2-50 um.

According to the atomizing disk provided by the embodiment of the invention, along with the rotation of the rotary disk, the liquid in each centrifugal channel is atomized after being split under the action of centrifugal force and gravity, and meanwhile, the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space ranges from Ra0.2 to 50 um. Thereby, the friction force of the liquid contacting with the inner surface of the centrifugal channel and/or the surface of the liquid inlet space can be improved, the atomization effect is improved, and the formation of fog drops is avoided.

In some embodiments of the invention, the roughness of the inner surface of the centrifugal channel and/or the surface of the inlet space is in the range of ra2.5-11 um.

In some embodiments of the invention, the roughness of the inner surface of the centrifugal channel and/or the surface of the inlet space is in the range of ra4.8-5.5 um.

In some embodiments of the present invention, the rotating disc and the plurality of ribs are integrally formed.

In some embodiments of the present invention, the material of the rotating disc and/or the protruding strip is polypropylene.

In some embodiments of the present invention, in a rotation direction of the turntable, each of the convex lines is formed as an arc-shaped plate that protrudes downstream in the rotation direction.

In some embodiments of the present invention, an atomization block for atomizing the liquid in the centrifugal channel is disposed on one side of each centrifugal channel close to the edge of the rotating disk.

In some embodiments of the present invention, each of the protruding strips includes a stopper and a flow guiding strip, the stopper is disposed near the liquid inlet space to divide the liquid flowing into the centrifugal channel, and the height of the flow guiding strip is greater than that of the stopper.

In some embodiments of the present invention, an extension path of each stopper in a radial direction of the turntable is curved.

In some embodiments of the present invention, each of the flow guiding strips includes a stopping portion and a flow guiding portion, the stopping portion is disposed near the liquid inlet space, the flow guiding portion is disposed near an edge of the rotating disc to guide a spraying trajectory of the atomized liquid, and a height of the stopping portion is greater than a height of the flow guiding portion.

In some embodiments of the invention, a side of the stopping portion away from the receiving surface has a first top surface, a side of the flow guiding portion away from the receiving surface has a second top surface, and the first top surface and/or the second top surface are/is arranged obliquely relative to the receiving surface.

A spraying device according to an embodiment of the present invention includes: the atomizing disc is the atomizing disc according to the embodiment of the invention, the motor assembly is matched with the atomizing disc to drive the atomizing disc to rotate, and the liquid inlet pipe conveys liquid towards the liquid inlet space.

According to the spraying device provided by the embodiment of the invention, along with the rotation of the rotating disc, the liquid in each centrifugal channel is split and atomized under the action of centrifugal force and gravity, and meanwhile, the roughness of the inner surface of each centrifugal channel and/or the surface of the liquid inlet space ranges from Ra0.2 to 50 um. Thereby, the friction force of the liquid contacting with the inner surface of the centrifugal channel and/or the surface of the liquid inlet space can be improved, the atomization effect is improved, and the formation of fog drops is avoided.

The unmanned aerial vehicle provided by the embodiment of the invention comprises the spraying device provided by the embodiment of the invention.

According to the unmanned aerial vehicle provided by the embodiment of the invention, along with the rotation of the turntable, the liquid in each centrifugal channel is split and atomized under the action of centrifugal force and gravity, and meanwhile, the value range of the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space is Ra0.2-50 um. Thereby, the friction force of the liquid contacting the inner surface of the centrifugal channel and/or the surface of the liquid inlet space can be improved, the atomization effect is improved, and the formation of fog drops is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a spraying device according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of an atomizing disk according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a partial schematic view of a stop according to an embodiment of the invention;

FIG. 6 is a cross-sectional view of an atomizing disk according to an embodiment of the present invention;

FIG. 7 is a top view of an atomizing disk according to an embodiment of the present invention.

Reference numerals:

1000. a spraying device;

100. an atomizing disk;

1. a turntable; 11. bearing surface; 12. a liquid inlet space;

2. a convex strip; 21. a centrifugal channel; 22. a stopper; 221. a third top surface; 222. a flow guide surface; 223. a water-facing surface; 224. a third side; 23. a flow guide strip; 231. a stopper portion; 2311. a first top surface; 2312. a first side surface; 232. a flow guide part; 2321. a second top surface; 2322. a second side surface; 24. a transition bevel; 25. a liquid separation flow channel; 26. a transition end face;

3. an atomizing block;

4. a motor assembly;

5. a liquid inlet pipe.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-7, an atomizing disk 100 according to an embodiment of the present invention is described, wherein the atomizing disk 100 may be disposed on a motor assembly 4, and an output shaft of the motor assembly 4 is connected to a central position of the atomizing disk 100, so as to drive the atomizing disk 100 to rotate around its axis. The liquid inlet pipe 5 can convey liquid towards the atomizing disc 100, the atomizing disc 100 is driven by the motor assembly 4 to rotate, and the liquid in the atomizing disc 100 is atomized and thrown out under the action of centrifugal force generated by rotation of the atomizing disc 100, so that the liquid is sprayed. Specifically, one end of the liquid inlet pipe 5 may be connected to a peristaltic pump (not shown), and the other end of the liquid inlet pipe 5 may be connected to the motor assembly 4, and the liquid outlet (not shown) provided on the motor assembly 4 is used to guide the liquid delivered by the peristaltic pump to the atomizing disk 100. Preferably, the rotation speed of the atomizing disk 100 can be adjusted by controlling the input voltage of the motor assembly 4, so that the adjustment of the rotation speed of the atomizing disk 100 is simpler and more reliable.

The atomizing disk 100 according to an embodiment of the present invention includes: carousel 1, carousel 1 have and accept face 11, and the middle part of accepting face 11 is equipped with feed liquor space 12, accepts and is equipped with many sand grips 2 along the circumference interval on the face 11, accepts and all forms centrifugal channel 21 between face 11 and arbitrary two adjacent sand grips 2, and every centrifugal channel 21 all has inlet and hydrojet mouth, and the inlet is linked together with feed liquor space 12, and the hydrojet mouth is close to the border setting of carousel 1 with spilling atomizing liquid. Wherein the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 ranges from ra0.2 to 50 um.

It can be understood that liquid is carried to liquid inlet space 12 of carousel 1 by liquid inlet pipe 5, and liquid in liquid inlet space 12 is cut apart into stranded liquid by a plurality of sand grips 2 and flows into to a plurality of centrifugal channels 21 from a plurality of inlet respectively, and along with the rotation of carousel 1, liquid in carousel 1 splits the back atomizing under the effect of centrifugal force and gravity, and simultaneously, liquid in carousel 1 and the internal surface of centrifugal channel 21 and/or the surface contact of liquid inlet space 12, and liquid in carousel 1 promotes the liquid atomizing under the effect of frictional force, and the liquid after the atomizing spills out from the hydrojet of centrifugal channel 21 again to realize the atomizing of liquid.

And the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 is controlled to be in the range of Ra0.2-50 um. Thereby, the friction force of the liquid contacting with the inner surface of the centrifugal passage 21 and/or the surface of the liquid inlet space 12 can be improved, so that the splashing of the liquid in the atomizing disk 100 is avoided, the sprinkling of large-particle liquid drops is avoided, and the sprinkling effect is improved.

For example, when the roughness of the inner surface of the centrifugal channel 21 ranges from ra0.2 to 50um, the liquid in the centrifugal channel 21 can be better atomized under the action of friction force, thereby avoiding the large-particle liquid drops from being spilled, and further improving the spraying effect.

When the roughness of the surface of the liquid inlet space 12 is in the range of ra0.2-50um, the liquid in the liquid inlet space 12 can be atomized under the action of friction force and then enter the centrifugal channel 21, so that the splashing of the liquid in the atomizing disk 100 is avoided, the spilling of large-particle liquid drops is avoided, and the spraying effect is improved.

When the value ranges of the roughness of the inner surface of the centrifugal channel 21 and the surface of the liquid inlet space 12 are all Ra0.2-50um, the liquid in the liquid inlet space 12 can be atomized under the action of friction force and then enter the centrifugal channel 21, and the liquid in the centrifugal channel 21 is atomized again under the action of friction force, so that the atomization effect is improved, the formation of fog drops is avoided, and the spraying accuracy is improved.

According to the atomizing disk 100 of the embodiment of the present invention, with the rotation of the rotary disk 1, the liquid in the rotary disk 1 is atomized after being split under the action of the centrifugal force and the gravity, and the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 is controlled to be in a range of ra0.2 to 50 um. Thereby increasing the friction of the liquid against the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 and thus increasing the atomisation effect and avoiding the formation of droplets.

In some embodiments of the invention the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 is in the range of ra2.5-11 um. It will be appreciated that the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 can be varied from 2.5 to 11 um. Thereby ensuring that the liquid is fully atomized under the action of friction force, improving the atomization effect and avoiding the formation of fog drops.

In some embodiments of the invention the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 is in the range of ra4.8-5.5 um. It will be appreciated that the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 can be varied from a value of ra4.8 to 5.5 um. Thereby can guarantee that liquid fully atomizes under the effect of frictional force to improve atomization effect, avoid the formation of fog drop.

It should be noted that, the value of the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 may be limited according to the actual use condition as long as the formation of mist droplets can be avoided, and the value of the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 is not limited herein.

In some embodiments of the present invention, the turntable 1 and the plurality of ribs 2 are integrally formed. It can be understood that, by providing the rotary plate 1 and the plurality of ribs 2 as an integral molding, the structural strength of the atomizing disk 100 can be improved.

In some embodiments of the present invention, the material of the rotating disc 1 and/or the ribs 2 is polypropylene. It can be understood that the water absorption of the polypropylene in water is only 0. O1%, the molecular weight is about 8-15 ten thousand, and the moldability is good, so that the water absorption phenomenon of the rotating disc 1 and/or the convex strips 2 is avoided, and the stability of the atomized liquid of the rotating disc 1 and/or the convex strips 2 is improved. Meanwhile, the manufacturing cost of the atomizing disk 100 can be reduced, and the manufacturing of the atomizing disk 100 is simple and convenient. Preferably, the materials of the rotating disc 1 and the protruding strips 2 are polypropylene, so as to reduce the manufacturing cost of the atomizing disc 100.

It should be noted that, the material of the rotating disc 1 and/or the protruding strips 2 may be limited according to the actual use situation, as long as the liquid can be atomized by the rotation of the atomizing disk 100, and the material of the rotating disc 1 and/or the protruding strips 2 is not limited herein.

As shown in fig. 2 to 6, in some embodiments of the present invention, each of the ribs 2 is formed as an arc-shaped plate protruding toward the downstream of the rotation direction in the rotation direction of the turntable 1. It can be understood that, through making every sand grip 2 all bulge towards the low reaches of direction of rotation, and then along with the rotation of carousel 1, can improve the area of contact of the liquid that splashes and sand grip 2 to make sand grip 2 can fully accept the liquid droplet that splashes, avoid the liquid droplet spill.

It should be noted that each of the convex strips 2 protrudes toward the downstream in the rotation direction, and it is understood that when the rotary disk 1 rotates, an extending path of each convex strip 2 in the centrifugal direction is arc-shaped, that is, one side surface of each convex strip 2 for forming the centrifugal passage 21 is concave arc surface, and the other side surface is convex arc surface. Wherein can make the side of indent towards the direction of the side of evagination as the direction of rotation of carousel 1, and then along with the rotation of carousel 1, the liquid drop that splashes can fall to the side for sunken or evagination cambered surface to improve the area of accepting to the liquid drop that splashes, thereby avoid the liquid drop spill.

In some embodiments of the present invention, the direction of the convex side surface facing the concave side surface is used as the rotation direction of the turntable 1, and then the splashed liquid drops can fall onto the arc surface with the concave or convex side surface along with the rotation of the turntable 1, so as to increase the carrying area of the splashed liquid drops, thereby preventing the liquid drops from splashing. It should be noted that the rotation direction of the turntable 1 may be limited according to actual use conditions, as long as the receiving area for the splashed liquid droplets can be increased, thereby preventing the liquid droplets from splashing.

As shown in fig. 2 to 5, in some embodiments of the present invention, a side of each centrifugal channel 21 close to the edge of the rotating disk 1 is provided with an atomizing block 3 for atomizing the liquid in the centrifugal channel 21. It can be understood that, by arranging the atomizing block 3 on one side of each centrifugal channel 21 close to the edge of the rotating disk 1, when the atomized liquid in the centrifugal channel 21 contacts the atomizing block 3, the atomized liquid is split again after colliding with the atomizing block 3, so as to improve the atomizing effect of the atomizing disk 100. Meanwhile, when the liquid which is not atomized is still stored in the centrifugal channel 21, the part of the liquid is atomized after colliding with the atomizing block 3, thereby avoiding the liquid drops with large particles from spilling, and further improving the spraying effect

As shown in fig. 2 to 5, in some embodiments of the present invention, each of the ribs 2 includes a stopper 22 and a guide bar 23, the stopper 22 is disposed near the inlet space 12 to divide the liquid flowing into the centrifugal passage 21, and the height of the guide bar 23 is greater than that of the stopper 22. It will be appreciated that by locating the stop 22 adjacent the inlet space 12, the stop 22 can be caused to extend from the end of the flow guide strip 23 towards the interior of the inlet space 12. When the rotary table 1 rotates, on the one hand, the liquid in the liquid inlet space 12 is swept and cut by the stop block 22 extending into the liquid inlet space 12 and then flows to the plurality of centrifugal channels 21, so that the liquid is uniformly divided, the sprayed liquid drops are more uniform when the rotary table 1 rotates, the particle size distribution of the liquid drops is more concentrated, and the purpose of improving the spraying effect can be achieved.

On the other hand, when the atomizing disk 100 has splashed liquid therein, the height of the flow guide strip 23 is greater than that of the stopper 22, so that the flow guide strip 23 can block the part of splashed liquid, large-particle liquid drops are prevented from spilling, and the spraying effect is further improved.

The height of the stopper 22 is the height of the stopper 22 relative to the receiving surface 11. The height of the guide strips 23 is the height of the guide strips 23 relative to the receiving surface 11. What the height of the guide strip 23 is greater than that of the stop block 22 means that the height of the guide strip 23 can be represented as that the height of the guide strip 23 relative to the lowest position of the bearing surface 11 is greater than that of the stop block 22 relative to the highest position of the bearing surface 11, the liquid is cut and swept by the stop block 22 with the lower height, the cutting and refining capacity for the liquid is guaranteed, and meanwhile, the influence of the stop block 22 on the guide effect of the guide strip 23 can be avoided.

As shown in fig. 2 to 5, in some embodiments of the present invention, a plurality of the flow guide strips 23 are disposed on the receiving surface 11 at intervals, and the plurality of the flow guide strips 23 are disposed at intervals along the circumferential direction of the turntable 1. Every water conservancy diversion strip 23 extends the setting from the outer periphery of carousel 1 towards the center of carousel 1 to the one end that water conservancy diversion strip 23 is close to carousel 1 center has certain interval with the center of carousel 1, thereby makes a plurality of dogs 22 of a plurality of water conservancy diversion strips 23 near the one end at carousel 1 center enclose into feed liquor space 12 with the receiving surface 11 of carousel 1 jointly, and the liquid outlet on the motor element 4 stretches into inside feed liquor space 12, and guides liquid to flow into in the feed liquor space 12, with the purpose of realizing leading liquid to feed liquor space 12.

In some embodiments of the present invention, the turntable 1 is substantially disc-shaped, and one side of the turntable 1 is provided with a receiving surface 11, and the receiving surface 11 is used for receiving liquid. The guide strips 23 and the stop blocks 22 are arranged on the bearing surface 11. Optionally, in this embodiment, when the liquid flows onto the receiving surface 11 of the turntable 1 and the turntable 1 rotates, after the stopper 22 cuts and refines the liquid, the liquid is guided by the guide strip 23, so that the liquid can perform centrifugal motion along the receiving surface 11 and flow to the outer periphery of the turntable 1 in the centrifugal direction of the receiving surface 11.

The centrifugal direction of the receiving surface 11 refers to a direction from the center of the turntable 1 toward the outer periphery of the turntable 1, and the centrifugal direction may be a direction extending along a straight line or a direction extending along a curved line. When liquid moves along the centrifugal direction of the bearing surface 11, the liquid can be cut into liquid drops with small particle size through the guide strips 23 and the stop blocks 22, and the liquid is enabled to be atomized when being sprinkled from the outer periphery of the rotary table 1 through the guiding and cutting effects of the plurality of stop blocks 22 and the plurality of guide strips 23 on the liquid, so that the liquid is atomized to be conveniently sprinkled onto designated crops.

As shown in fig. 2 to 7, in some embodiments of the present invention, the extending path of each stopper 22 along the radial direction of the turntable 1 is curved. It can be understood that, by making the extending path of the stop 22 in the radial direction of the rotating disk 1 be a curve, the stop 22 is convenient to cut the liquid, so that the sprayed droplets are more uniform in fog particles when the rotating disk 1 rotates, and the particle size distribution of the fog droplets is more concentrated, so as to improve the spraying purpose.

Further, when carousel 1 rotated, dog 22 was the curve along carousel 1 centrifugal direction's extension route to make the orientation of one side of dog 22 indent the same with carousel 1's rotation direction, and then can make dog 22 along with carousel 1 rotates, improved the cutting subdivision ability to liquid, so that the liquid drop fog grain that spills when carousel 1 rotated is more even, and the particle size distribution of fog drop is more concentrated, in order to improve the purpose of spraying.

As shown in fig. 2 to 5, in some embodiments of the invention the height of the end of the gib 23 close to the inlet space 12 is greater than the height of the end of the gib 23 remote from the inlet space 12. When liquid flows to the bearing surface 11 from the liquid inlet space 12, the liquid directly impacts the bearing surface 11 at a certain flowing speed, so that the liquid splashes, at the moment, the high-height guide strip 23 is arranged close to the liquid inlet space 12, the splashed liquid can fall onto the guide strip 23 and flows back to the centrifugal channel 21 along the guide strip 23, the liquid splashing can be avoided, the phenomenon that large-particle liquid drops are spilled is improved, and the spraying effect of the atomizing plate 100 is improved.

The height of the flow guide strip 23 near the end of the inlet space 12 refers to the height of the end of the flow guide strip 23 near the inlet space 12 relative to the receiving surface 11. Similarly, the height of the end of the flow guide strip 23 away from the inlet space 12 refers to the height of the end of the flow guide strip 23 away from the inlet space 12 relative to the receiving surface 11.

In addition, when the splashed liquid drops fall onto the flow guide strip 23, the liquid drops can flow along the flow guide strip 23, namely, the liquid drops flow from the end part of the flow guide strip 23 close to the liquid inlet space 12 to the end part of the flow guide strip 23 far away from the liquid inlet space 12, and the liquid drops are spilled from the end part of the flow guide strip 23 far away from the liquid inlet space 12.

As shown in fig. 2 to 5, in some embodiments of the present invention, each flow guiding strip 23 includes a stopping portion 231 and a flow guiding portion 232, the stopping portion 231 is disposed near the liquid inlet space 12, the flow guiding portion 232 is disposed near the edge of the rotating disc 1 to guide the spraying track of the atomized liquid, and the height of the stopping portion 231 is greater than that of the flow guiding portion 232. It can be understood that, when the liquid directly impacts on the receiving surface 11 at a certain flowing speed, the splashing of the liquid can be caused, and at this time, by arranging the stopping portion 231 with a higher height close to the liquid inlet space 12, the splashed liquid can fall onto the stopping portion 231 and flow back to the centrifugal channel 21 along the stopping portion 231, so that the splashing of the liquid can be avoided, the phenomenon that large-particle droplets are spilled is improved, and the spraying effect of the atomizing plate 100 is further improved. Meanwhile, the atomized liquid in the centrifugal channel 21 is guided to be sprayed out through the flow guide part 232, thereby ensuring the spraying precision,

the height of the stopper portion 231 represents the height of the highest position of the stopper portion 231 with respect to the receiving surface 11, and the height of the flow guide portion 232 represents the height of the highest position of the flow guide portion 232 with respect to the receiving surface 11. It should be understood that in other embodiments, the height of the stopping portion 231 may also refer to the height of the lowest position of the stopping portion 231 relative to the receiving surface 11; the height of the flow guide portion 232 may also refer to the height of the lowest position of the flow guide portion 232 relative to the receiving surface 11.

As shown in fig. 2 to 5, in some embodiments of the present invention, the flow guide strip 23 includes a stopping portion 231 and a flow guide portion 232 connected to each other. Wherein, the guiding part 232 is arranged near the outer circumference of the rotating disc 1, the stopping part 231 is arranged near the liquid inlet space 12, and the ends of the stopping part 231 and the guiding part 232 are connected with each other. By making the height of the stopping portion 231 greater than the height of the guiding portion 232, the splashed liquid droplets can be received by the stopping portion 231 when the liquid splashes, so as to achieve the purpose of preventing the liquid droplets from splashing.

As shown in fig. 2 to 5, in some embodiments of the invention, a side of the stopping portion 231 away from the receiving surface 11 has a first top surface 2311, a side of the guiding portion 232 away from the receiving surface 11 has a second top surface 2321, and the first top surface 2311 and/or the second top surface 2321 are disposed obliquely with respect to the receiving surface 11. It can be understood that the height of the stopping portion 231 and/or the guiding portion 232 is changed by obliquely disposing the first top surface 2311 and/or the second top surface 2321 with respect to the receiving surface 11, so that the structure of the guiding strip 23 is simpler and more reliable.

It should be noted that, the first top surface 2311 and/or the second top surface 2321 are obliquely arranged relative to the receiving surface 11, it is understood that the first top surface 2311 may be arranged as an inclined surface relative to the receiving surface 11, and the second top surface 2321 may be arranged parallel to the plane of the receiving surface 11; alternatively, the second top surface 2321 is disposed as an inclined surface relative to the receiving surface 11, and the first top surface 2311 is disposed parallel to the plane of the receiving surface 11; alternatively, the first top surface 2311 and the second top surface 2321 are both provided as inclined surfaces with respect to the receiving surface 11.

In the present embodiment, taking the first top surface 2311 and the second top surface 2321 as inclined surfaces relative to the receiving surface 11 as an example, the height of the end of the first top surface 2311 close to the liquid inlet space 12 relative to the receiving surface 11 is greater than the height of the end of the first top surface 2311 close to the flow guide portion 232 relative to the receiving surface 11, that is, the height of the stopping portion 231 is gradually reduced from the end close to the liquid inlet space 12 to the end close to the flow guide portion 232. Therefore, when the liquid splashes, the splashed liquid drops can be received through one side of the stopping part 231 close to the liquid inlet space 12, and the purpose of preventing the liquid drops from splashing is achieved.

Similarly, the height of the end of the second top surface 2321 close to the stopping portion 231 relative to the receiving surface 11 is greater than the height of the end of the second top surface 2321 close to the outer periphery of the turntable 1 relative to the receiving surface 11, that is, the height of the flow guiding portion 232 gradually decreases from the end close to the stopping portion 231 to the end close to the outer periphery of the turntable 1. Therefore, when the liquid splashes, the splashed liquid drops can be received by one side of the flow guide part 232 close to the liquid inlet space 12, and the purpose of preventing the liquid drops from splashing is achieved.

As shown in fig. 2 to 5, in some embodiments of the invention, a side of the stopping portion 231 away from the receiving surface 11 has a first top surface 2311, a side of the guiding portion 232 away from the receiving surface 11 has a second top surface 2321, the first top surface 2311 and/or the second top surface 2321 are disposed in parallel with respect to the receiving surface 11, and the first top surface 2311 is located above the second top surface 2321. It can be understood that, by positioning the first top surface 2311 above the second top surface 2321, and further making the height of the stopping portion 231 greater than the height of the guiding portion 232, the splashed liquid droplets can be received by the stopping portion 231 when the liquid is splashed, so as to achieve the purpose of preventing the liquid droplets from splashing.

It should be noted that, when the first top surface 2311 is arranged to be parallel to the plane of the receiving surface 11, the height of the stopping portion 231 relative to the receiving surface 11 is kept constant from the end close to the liquid inlet space 12 to the end close to the flow guiding portion 232. Similarly, when the second top surface 2321 is disposed parallel to the plane of the receiving surface 11, the height of the flow guiding portion 232 relative to the receiving surface 11 is kept constant from the end close to the stopping portion 231 to the end close to the outer periphery of the rotating disc 1.

In some embodiments of the present invention, the first top surface 2311 and the second top surface 2321 are connected by a transition bevel 24. The transition inclined surface 24 is located between the first top surface 2311 and the second top surface 2321, and the transition inclined surface 24 is also a side surface of the gib 23 away from the receiving surface 11.

It should be noted that the transition inclined surface 24 may be disposed at one end of the stopping portion 231 close to the flow guiding portion 232; or may be disposed at one end of the flow guiding portion 232 close to the stopping portion 231; or a part of the guiding portion 232 may be disposed at an end of the stopping portion 231 close to the stopping portion 231, and a part of the guiding portion 231 may be disposed at an end of the stopping portion 231 close to the guiding portion 232.

Through the arrangement of the transition inclined plane 24, the first top surface 2311 with a higher height and the second top surface 2321 with a lower height can be smoothly connected, so that the whole streamline shape formed by the flow guide strip 23 is ensured, and the whole flow guide strip 23 is convenient to process and has a better appearance.

In some embodiments of the present invention, the slope of the transition slope surface 24 relative to the receiving surface 11 is greater than the slope of the first top surface 2311 relative to the receiving surface 11, and/or the slope of the transition slope surface 24 relative to the receiving surface 11 is greater than the slope of the second top surface 2321 relative to the receiving surface 11. That is, the relationship of the inclination between the first top surface 2311, the second top surface 2321 and the transition inclined surface 24 may be such that the inclination of the transition inclined surface 24 with respect to the receiving surface 11 is only greater than the inclination of the first top surface 2311 with respect to the receiving surface 11; alternatively, the slope of the transition slope 24 relative to the receiving surface 11 is only greater than the slope of the second top surface 2321 relative to the receiving surface 11; alternatively, the slope of the transition slope 24 relative to the receiving surface 11 is greater than the slope of the first top surface 2311 relative to the receiving surface 11, and the slope of the transition slope 24 relative to the receiving surface 11 is greater than the slope of the second top surface 2321 relative to the receiving surface 11.

The inclination of the transition slope 24 with respect to the receiving surface 11 indicates the inclination of the transition slope 24 with respect to the receiving surface 11. Similarly, the inclination of the first top surface 2311 relative to the receiving surface 11 refers to the inclination of the first top surface 2311 relative to the receiving surface 11, and the inclination of the second top surface 2321 relative to the receiving surface 11 refers to the inclination of the second top surface 2321 relative to the receiving surface 11.

In addition, when the inclination of the first top surface 2311 relative to the bearing surface 11 is the same as the inclination of the transition inclined surface 24 relative to the bearing surface 11, the transition inclined surface 24 may be regarded as a part of the first top surface 2311, and the arrangement of the transition inclined surface 24 may be regarded as being eliminated; alternatively, when the inclination of the second top surface 2321 with respect to the receiving surface 11 is the same as the inclination of the transition inclined surface 24 with respect to the receiving surface 11, it can be considered that the transition inclined surface 24 is a part of the second top surface 2321, and it can also be considered that the provision of the transition inclined surface 24 is eliminated.

In some embodiments of the present invention, the transition chamfer 24 is radiused between the first top surface 2311 and the transition chamfer 24 is radiused between the second top surface 2321. The connection between the transition inclined surface 24 and the first top surface 2311 and the connection between the transition inclined surface 24 and the second top surface 2321 can be ensured to be smoother through the round corners arranged between the first top surface 2311 and the second top surface 2321 and the transition inclined surface 24 respectively.

It should be noted that, when the inclination of the first top surface 2311 with respect to the receiving surface 11 is the same as the inclination of the transition inclined surface 24 with respect to the receiving surface 11, the provision of a rounded corner between the first top surface 2311 and the transition inclined surface 24 is eliminated; similarly, when the inclination of the second top surface 2321 with respect to the receiving surface 11 is the same as the inclination of the transition inclined surface 24 with respect to the receiving surface 11, the provision of the rounded corner between the second top surface 2321 and the transition inclined surface 24 is eliminated.

As shown in fig. 2 to 5, in some embodiments of the present invention, the end of the stopping portion 231 close to the inlet space 12 is provided with a transition end surface 26, and the stopper 22 extends from the transition end surface 26. Optionally, a fillet is arranged between the transition end surface 26 and the first top surface 2311, and through the arrangement of the fillet, one side of the opening of the liquid inlet space 12 is approximately flared, so that the condition that the diversion strip 23 rubs against other parts when the turntable 1 rotates can be avoided. It should be understood that a flat corner or an un-rounded or flat corner between the first top surface 2311 and the transition end surface 26 may be provided in other embodiments.

In some embodiments of the present invention, a stop 22 is disposed at an end of each stop portion 231, and a portion of the centrifugal channel 21 between two adjacent stop 22 defines the liquid separating channel 25, so that the droplets sprinkled by the rotation of the rotating disk 1 due to the arrangement of the stop 22 are more uniform, the particle size distribution of the droplets is more concentrated, and the purpose of improving the sprinkling effect can be achieved.

It should be understood that in other embodiments, the number of the stop blocks 22 may be less than the number of the stop parts 231, for example, one stop part 231 without the stop block 22 is disposed between every two stop parts 231 with the stop blocks 22, and each liquid-separating channel 25 communicates with two centrifugal channels 21. Further, the plurality of stoppers 22 may not be provided at equal intervals, and for example, the stoppers 22 may be provided on two stoppers 231 among any adjacent three stoppers 231.

In some embodiments of the present invention, the transition end surface 26 is disposed obliquely with respect to the axis of the rotating disk 1, so that the liquid inlet space 12 is flared, and the atomizing disk 100 is easy to be integrally molded during manufacturing.

In some embodiments of the present invention, each stopper 231 has two first side surfaces 2312 disposed opposite to each other, the two first side surfaces 2312 are respectively used for forming the centrifugal channels 21 on two sides of the stopper 231, and a flat corner or a round corner is formed between each first side surface 2312 and the first top surface 2311. Similarly, the flow guiding part 232 has two second side surfaces 2322 disposed oppositely, the two second side surfaces 2322 are also used for forming the centrifugal channels 21 on two sides of the flow guiding part 232, and a straight angle or a round angle is opened between each second side surface 2322 and the second top surface 2321.

Alternatively, in the present embodiment, the flow guide 232 and the stopper 231 connected to each other are used to connect the first side 2312 and the second side 2322 forming the same centrifugal channel 21 to each other.

It should be noted that, after the liquid flows from the liquid inlet space 12 to the receiving surface 11 and splashes are generated, the splashed liquid drops fall on the first side surface 2312, and the liquid drops falling on the first side surface 2312 can flow along the first side surface 2312 to the bottom of the centrifugal channel 21 and merge into the liquid flow inside the centrifugal channel 21. It should be appreciated that droplets falling on the first side 2312 may also flow along the first side 2312 to the second side 2322 and spill out of the end of the flow guide 232 remote from the stopper 231.

As shown in fig. 2 to 5, in some embodiments of the present invention, a third top surface 221 is disposed on a side of the stopper 22 away from the bearing surface 11, and the third top surface 221 forms a rounded corner with the transition end surface 26. That is, the transition between the transition end surface 26 and the third top surface 221 is also performed by a rounded corner, so that the stop 22 and the stop portion 231 are smoothly connected, and thus the processing of the guide strip 23 and the stop 22 is facilitated. Meanwhile, the third top surface 221 and the transition end surface 26 are connected through a fillet, so that an arc surface can be prevented from being formed between the third top surface 221 and the transition end surface 26, when part of liquid drops fall onto the third top surface 221, a certain guiding effect can be provided for the liquid drops through the fillet formed between the third top surface 221 and the transition end surface 26, and secondary splashing caused when the liquid flows onto the transition end surface 26 from the third top surface 221 is avoided.

As shown in fig. 2 to 5, in some embodiments of the present invention, the height of the stopper 22 gradually decreases from the end near the guide strip 23 to the end near the inlet space 12, and the end of the third top surface 221 near the inlet space 12 is connected to the receiving surface 11. The splashing of the liquid caused by the fact that the end, extending into the liquid inlet space 12, of the stop block 22 sweeps the liquid can be avoided, and meanwhile, the cutting and refining effects of the stop block 22 on the liquid can also be guaranteed.

In some embodiments of the present invention, the third top surface 221 is provided with flow guiding surfaces 222 on both sides, ends of the two flow guiding surfaces 222 away from the transition end surface 26 are connected to the bearing surface 11, and the two flow guiding surfaces 222 and the third top surface 221 together form an arched upstream surface 223. Through the setting of upstream surface 223, when liquid flows to dog 22, can accept liquid through upstream surface 223 to cut the separation to liquid, can make liquid flow to the centrifugal channel 21 of dog 22 both sides respectively.

It should be noted that the stopper 22 has two third side surfaces 224 disposed oppositely, the two third side surfaces 224 are respectively connected to the two first side surfaces 2312, and the diversion surface 222 can be regarded as a straight angle formed between the third side surfaces 224 and the third top surface 221. Through the arrangement of the flow guide surface 222, the liquid received through the third top surface 221 can be guided to the two sides of the stopper 22 through the flow guide surface 222, and then the liquid flows into the centrifugal channel 21 through the guidance of the two third side surfaces 224, so that the division and subdivision of the liquid are realized.

As shown in fig. 1 to 7, a spray apparatus 1000 according to an embodiment of the present invention includes: atomizing disk 100, motor assembly 4 and feed liquor pipe 5, atomizing disk 100 is atomizing disk 100 according to the above-mentioned embodiment of the present invention, motor assembly 4 cooperates with atomizing disk 100 to drive atomizing disk 100 to rotate, and feed liquor pipe 5 conveys liquid towards liquid inlet space 12.

According to the spraying device 1000 of the embodiment of the invention, with the rotation of the rotating disc 1, the liquid in each centrifugal channel 21 is split and atomized under the action of centrifugal force and gravity, and meanwhile, the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 is enabled to be in a range of Ra0.2-50 um. Thereby increasing the friction of the liquid against the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 and thus increasing the atomisation effect and avoiding the formation of droplets.

In some embodiments of the present invention, the spraying device 1000 may be directly fixed at a preset position to perform fixed spraying at a position to be sprayed; or fixed on a movable device for movable spraying. The mobile device may be an airplane, an automobile, a drone, etc. The liquid sprayed by the spraying device 1000 may be water, pesticide, etc.

As shown in fig. 1 to 7, the unmanned aerial vehicle according to the embodiment of the present invention includes the spraying device 1000 according to the above-described embodiment of the present invention.

According to the unmanned aerial vehicle provided by the embodiment of the invention, along with the rotation of the turntable 1, the liquid in each centrifugal channel 21 is split and atomized under the action of centrifugal force and gravity, and meanwhile, the value range of the roughness of the inner surface of the centrifugal channel 21 and/or the surface of the liquid inlet space 12 is Ra0.2-50 um. Thereby increasing the friction of the liquid against the inner surface of the centrifugal channel 21 and/or the surface of the inlet space 12 and thus increasing the atomisation effect and avoiding the formation of droplets.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An atomizing disk, comprising:

the rotary table is provided with a bearing surface, a liquid inlet space is arranged in the middle of the bearing surface, a plurality of convex strips are arranged on the bearing surface at intervals along the circumferential direction, centrifugal channels are formed between the bearing surface and any two adjacent convex strips, each centrifugal channel is provided with a liquid inlet and a liquid spraying port, the liquid inlet is communicated with the liquid inlet space, the liquid spraying port is arranged at the edge close to the rotary table to spray atomized liquid, and an atomization block for atomizing the liquid in the centrifugal channel is arranged at one side of each centrifugal channel close to the edge of the rotary table;

wherein the roughness of the inner surface of the centrifugal channel and/or the surface of the liquid inlet space ranges from Ra2.5 to 11 um.

2. An atomizing disk according to claim 1, characterized in that the roughness of the inner surface of said centrifugal channel and/or the surface of said inlet space ranges from 4.8 to 5.5 um.

3. The atomizing disk of claim 1, wherein said rotary disk and said plurality of ribs are integrally formed.

4. The atomizing disk of claim 1, wherein the material of said rotary disk and/or said ribs is polypropylene.

5. The atomizing disk according to claim 1, wherein each of said convex strips is formed as an arcuate plate projecting downstream in the rotational direction of said rotary disk.

6. The atomizing disk according to any one of claims 1 to 5, wherein each of the ribs comprises a stopper and a flow guide strip, the stopper is disposed near the liquid inlet space to divide the liquid flowing into the centrifugal channel, and the height of the flow guide strip is greater than that of the stopper.

7. A spraying device, comprising:

the motor assembly and the liquid inlet pipe;

an atomizing disk according to any one of claims 1 to 6, wherein the motor assembly is matched with the atomizing disk to drive the atomizing disk to rotate, and the liquid inlet pipe conveys liquid towards the liquid inlet space.

8. A drone, characterized in that it comprises a spraying device according to claim 7.