CN216419824U - Centrifugal nozzle, sprinkling system and plant protection unmanned aerial vehicle - Google Patents

Abstract

The utility model provides a centrifugal spray head, sprinkling system and plant protection unmanned aerial vehicle, centrifugal spray head includes the motor, the liquid supply subassembly, a valve core, the centrifuge disc subassembly, liquid outlet opening assembly and liquid outlet seal assembly, the motor includes motor main part and rotatable subassembly, the liquid supply subassembly is installed in motor main part, the liquid supply subassembly is equipped with inlet and liquid outlet, the centrifuge disc unit mount is in rotatable subassembly, when the liquid outlet is opened, liquid enters into the centrifuge disc subassembly through the liquid outlet and spouts through the centrifuge disc subassembly, liquid outlet opening assembly swing joint is in rotatable subassembly, the liquid outlet opening assembly directly or indirectly acts on the case, make the case can keep away from the liquid outlet, the liquid outlet seal assembly is used for providing the case and is close to the restoring force of liquid outlet, make the case can be close to and seal the liquid outlet. The utility model provides a centrifugal nozzle closes the subassembly through setting up the liquid outlet and drives the plug when the motor is closed and be close to and seal the liquid outlet, can solve the hourglass of centrifugal nozzle during stop work liquid well and drip the problem.

Description

Centrifugal nozzle, sprinkling system and plant protection unmanned aerial vehicle

Technical Field

The utility model relates to a shower nozzle technical field especially relates to centrifugal spray head, sprinkler system and plant protection unmanned aerial vehicle.

Background

Along with the promotion of plant protection requirement, plant protection equipment, for example plant protection unmanned aerial vehicle, also harsher to the requirement of environmental protection, need strict management and control shower nozzle in the place that need not to spray the operation, avoid appearing the shower nozzle liquid medicine hourglass, increase the harmful substance's in the soil the condition. Meanwhile, the leakage of the liquid medicine can cause waste and economic loss. In addition, in actual operation, variable spraying exists, the spray head can be closed in certain scenes without spraying operation, if the liquid medicine is leaked, the leaf burning phenomenon can be caused, the growth of crops is extremely unfavorable, and the yield of the crops can be reduced in severe cases.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a centrifugal spray head, sprinkler system and plant protection unmanned aerial vehicle.

The utility model discloses the centrifugal spray head that the first aspect provided, include:

a motor including a motor body and a rotatable assembly;

the liquid supply assembly is arranged on the motor main body and is provided with a liquid inlet and a liquid outlet;

the valve core is used for opening or closing the liquid outlet;

the centrifugal disc assembly is arranged on the rotatable assembly, and when the liquid outlet is in an opening state, liquid enters the centrifugal disc assembly through the liquid outlet and is sprayed out through the centrifugal disc assembly;

the liquid outlet opening assembly is movably connected to the rotatable assembly, and directly or indirectly acts on the valve core, so that the valve core can be far away from the liquid outlet, and the liquid outlet is in an opening state;

the liquid outlet sealing assembly is used for providing restoring force for the valve core to be close to the liquid outlet, so that the valve core can be close to and seal the liquid outlet, and the liquid outlet is in a closed state;

when the motor is turned off, the liquid outlet closing assembly provides restoring force to enable the valve core to be close to the liquid outlet, so that the liquid outlet is closed to prevent the liquid from flowing out.

The utility model discloses the sprinkling system that the second aspect provided, include:

a liquid storage tank;

the water pump is connected with the liquid storage tank;

the centrifugal nozzle is connected with the water pump.

The utility model discloses plant protection unmanned aerial vehicle that third aspect provided, include:

an unmanned aerial vehicle body;

foretell sprinkler system, sprinkler system install in the unmanned aerial vehicle body.

According to the above technical scheme, the utility model discloses centrifugal nozzle that the first aspect provided drives the valve element and is close to and seals the liquid outlet when the motor is closed through setting up liquid outlet seal assembly, can solve the hourglass problem of dripping of centrifugal nozzle during stop work liquid well.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic cross-sectional view of a centrifugal nozzle according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a centrifugal nozzle according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a centrifugal nozzle according to another embodiment of the present invention;

fig. 4 is a schematic view illustrating a first centrifugal plate and a rotating shaft according to an embodiment of the present invention;

FIG. 5 is a partial schematic diagram of the structure shown in FIG. 4;

fig. 6 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a centrifugal nozzle according to another embodiment of the present invention;

fig. 8 is a schematic structural view of a rotating shaft according to another embodiment of the present invention;

fig. 9 is a schematic view of a variant embodiment of the port closing assembly according to an embodiment of the present invention;

fig. 10 is a schematic sectional view of a centrifugal nozzle according to another embodiment of the present invention;

fig. 11 is a schematic sectional view of a centrifugal nozzle according to another embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a centrifugal nozzle according to another embodiment of the present invention;

FIG. 13 is a partial schematic structural view of the centrifugal nozzle shown in FIG. 12;

fig. 14 is a schematic view of a variant embodiment of a port opening assembly according to another embodiment of the present invention;

fig. 15 is a schematic structural view of a centrifugal plate according to an embodiment of the present invention;

FIG. 16 is a partial schematic structural view of the centrifugal nozzle shown in FIG. 3;

fig. 17 is a schematic structural diagram of a spraying system according to an embodiment of the present invention;

fig. 18 is a schematic structural view of the plant protection unmanned aerial vehicle provided by an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

As shown in fig. 1, fig. 2 and fig. 13, an embodiment of the present invention provides a centrifugal nozzle, which includes a motor 10, a liquid supply assembly 20, a valve core 30, a centrifugal plate assembly 40, a liquid outlet opening assembly 50 and a liquid outlet closing assembly 60. The motor 10 includes a motor body 11 and a rotatable assembly 12. The liquid supply assembly 20 is mounted on the motor body 11, and the liquid supply assembly 20 is provided with a liquid inlet 21 and a liquid outlet 22. The valve core 30 is used for opening or closing the liquid outlet 22. The centrifuge disk assembly 40 is mounted to the rotatable assembly 12 such that when the discharge port 22 is in an open position, fluid enters the centrifuge disk assembly 40 through the discharge port 22 and is ejected through the centrifuge disk assembly 40. The opening assembly 50 is movably connected to the rotatable assembly 12, and the opening assembly 50 directly or indirectly acts on the valve element 30, so that the valve element 30 can be far away from the liquid outlet 22, and the liquid outlet 22 is in an open state. The port closing assembly 60 is configured to provide a restoring force to the valve element 30 close to the discharge port 22, so that the valve element 30 can close and close the discharge port 22, and thus the discharge port 22 is in a closed state. Wherein, when the motor 10 is turned on, the liquid outlet opening assembly 50 moves relative to the rotatable assembly 12 to move the valve element 30 away from the liquid outlet 22, thereby opening the liquid outlet 22 to allow liquid to be ejected from the centrifugal disk assembly 40, and when the motor 10 is turned off, the liquid outlet closing assembly 60 provides a restoring force to move the valve element 30 close to the liquid outlet 22, thereby closing the liquid outlet 22 to prevent liquid from flowing out.

The embodiment of the utility model provides a centrifugal nozzle closes subassembly 60 through setting up liquid outlet and drives valve core 30 and be close to and seal liquid outlet 22 when motor 10 closes, can solve the hourglass problem of centrifugal nozzle during stop work liquid well.

In some embodiments, the opening state comprises a plurality of sub-states which are continuously changed, and the opening degree of the liquid outlet is different in different sub-states, so that the flow rate of the liquid sprayed from the centrifugal spray head is different; wherein the open state is associated with the rotational speed of the rotatable assembly 12, the open state can be adjusted to different sub-states by adjusting the rotational speed of the rotatable assembly 12.

As shown in fig. 1, in some embodiments, the rotatable assembly 12 includes a shaft assembly 121, the motor body 11 includes a front end and a rear end opposite to the front end, and the shaft assembly 121 protrudes from the front end of the motor body 11. The liquid supply assembly 20 is installed at the front end of the motor main body 11, the liquid supply assembly 20 and the front end of the motor main body 11 are enclosed to form a liquid cavity 101, liquid inside the liquid cavity 101 directly contacts the front end of the motor main body 11 to dissipate heat of the motor main body 11, and with the arrangement mode, liquid inside the liquid cavity 101 can directly carry out water-cooling heat dissipation on the motor 10, and the heat dissipation effect of the motor 10 is good.

As shown in fig. 1, optionally, the liquid supply assembly 20 includes a first annular shell 23, a second annular shell 24 and an annular bottom plate 25, the first annular shell 23 includes a first end and a second end opposite to each other, the first end of the first annular shell 23 is connected to the front end of the motor body 11, the first annular shell 23 is provided with a liquid inlet 21, the second annular shell 24 is disposed inside the first annular shell 23 and sleeved outside the shaft assembly 121, the second annular shell 24 includes a first end and a second end opposite to each other, the annular bottom plate 25 is connected between the second end of the first annular shell 23 and the second end of the second annular shell 24, and the annular bottom plate 25 is provided with a liquid outlet 22, wherein the front ends of the first annular shell 23, the second annular shell 24, the annular bottom plate 25 and the motor body 11 are enclosed to form the liquid chamber 101.

As shown in fig. 1, optionally, the front end of the motor body 11 is provided with a boss 11a, the shaft assembly 121 passes through the boss 11a, the first end of the second annular shell 24 is connected with the boss 11a, the liquid supply assembly 20 further comprises a first sealing member 26 and a second sealing member 27, the first sealing member 26 is arranged between the first end of the first annular shell 23 and the front end of the motor body 11, and the second sealing member 27 is arranged between the first end of the second annular shell 24 and the boss 11 a. In this arrangement, the first and second seals 26, 27 provide a better seal between the motor body 11 and the liquid supply assembly 20, preventing liquid in the chamber 101 from leaking out of the connection between the first annular housing 23 and the motor body 11 to the exterior of the centrifugal spray head and preventing liquid in the chamber 101 from entering the interior of the motor body 11 from the second annular housing 24.

It should be noted that the liquid supply assembly 20 is not limited to the above-mentioned manner, for example, in some other embodiments, as shown in fig. 3, the motor body 11 is a stator, the stator includes a fixed shaft 111, the rotatable assembly 12 includes a rotor 122, and the rotor 122 surrounds the fixed shaft 111. The liquid supply assembly 20 includes a hollow shaft 28, the hollow shaft 28 is disposed through the fixed shaft 111, the liquid inlet 21 and the liquid outlet 22 are respectively disposed at two ends of the hollow shaft 28, and the liquid flows out from the liquid outlet 22 after entering an inner cavity of the hollow shaft 28 from the liquid inlet 21. With this arrangement, the liquid outlet 22 is small, the sealing scheme can be relatively simplified, and the reliability of sealing is high.

As shown in fig. 1, 4 to 6, in some embodiments, the rotatable assembly 12 includes a shaft assembly 121, the centrifugal plate assembly 40 is movably sleeved on the shaft assembly 121, the valve element 30 is mounted on the centrifugal plate assembly 40, the liquid outlet opening assembly 50 is disposed on the centrifugal plate assembly 40, the liquid outlet opening assembly 50 includes a guide groove 102, the shaft assembly 121 is provided with a guide member 103, and the guide member 103 is movably embedded in the guide groove 102. When the motor 10 is turned on, the centrifugal disk assembly 40 and the shaft assembly 121 rotate relatively under the action of inertia, and the guide groove 102 moves along the axial direction of the shaft assembly 121 to drive the centrifugal disk assembly 40 to move along the axial direction of the shaft assembly 121, so that the valve core 30 is away from the liquid outlet 22. It should be noted that the positions of guide groove 102 and guide member 103 may be interchanged, that is, it is also possible that port opening assembly 50 includes guide member 103 and shaft assembly 121 is provided with guide groove 102.

As shown in fig. 4 and 5, optionally, the centrifugal plate assembly 40 includes a first centrifugal plate 41 and a cylinder 42, the valve core 30 is mounted on the first centrifugal plate 41, the cylinder 42 includes a first end and a second end opposite to each other, the first end of the cylinder 42 is connected to the first centrifugal plate 41, the cylinder 42 is provided with a first through hole, the shaft assembly 121 is movably disposed through the first through hole, the second end of the cylinder 42 is provided with a guide slot 102, and an outer side wall of the shaft assembly 121 is provided with a guide member 103.

As shown in fig. 4 and 5, alternatively, the guide groove 102 includes a first groove portion 104 and a second groove portion 105, the second groove portion 105 communicates with the first groove portion 104, the second groove portion 105 and the first groove portion 104 are arranged in the circumferential direction of the cylinder 42, and the first groove portion 104 and the second groove portion 105 are displaced in the axial direction of the cylinder 42. When the first centrifugal disk 41 and the shaft assembly 121 rotate relatively, the guide member 103 moves from one of the first slot portion 104 and the second slot portion 105 to the other, so that the first centrifugal disk 41 moves along the axial direction of the shaft assembly 121.

As shown in fig. 4 and 5, optionally, the guide slot 102 includes a first side 1021, a second side 1022, a first inclined surface 1023, a second inclined surface 1024, and a connecting surface 1025, the first side 1021 extends along the axial direction of the cylinder 42, the second side 1022 is spaced from and opposite to the first side 1021, the first inclined surface 1023 includes a first end and a second end opposite to each other, the first end of the first inclined surface 1023 is connected to the first side 1021, the second end of the first inclined surface 1023 extends obliquely toward the second side 1022 in a manner gradually away from the first centrifugal disk 41, the second inclined surface 1024 includes a first end and a second end opposite to each other, the first end of the second inclined surface 1024 is connected to the first inclined surface 1023, the second end of the second inclined surface 1024 extends obliquely toward the second side 1022 in a manner gradually approaching the first centrifugal disk 41, the connecting surface 1025 includes a first end and a second end opposite to each other, the first end of the connecting surface 1025 is connected to the second inclined surface 1024, the second end of the connecting surface 1025 extends along the circumference of the cylinder 42 and is connected to the second side surface 1022, wherein the first side surface 1021 and the first inclined surface 1023 enclose to form a first groove 104, and the second inclined surface 1024, the connecting surface 1025 and the second side surface 1022 enclose to form a second groove 105.

Taking the example of the second slot portion 105 being close to the liquid supply assembly 20 relative to the first slot portion 104, when the motor 10 is turned on, the shaft assembly 121 rotates, the first centrifugal disk 41 does not rotate due to inertia, the guide member 103 moves from the first slot portion 104 to the second slot portion 105 along the first inclined surface 1023, the first centrifugal disk 41 moves away from the liquid outlet 22 under the pushing of the guide member 103, the valve core 30 is driven to move away from the liquid outlet 22 to open the liquid outlet 22, and when the guide member 103 rotates to abut against the second side surface 1022, the guide member 103 pushes the first centrifugal disk 41 to rotate, and liquid is ejected from the first centrifugal disk 41. When the motor 10 is turned off, the shaft assembly 121 stops rotating, the first centrifugal disk 41 continues to rotate due to inertia, the guide member 103 runs from the second slot 105 to the first slot 104 along the second inclined surface 1024, and the first centrifugal disk 41 moves in the direction of the driving member of the liquid outlet closing assembly 60 toward the liquid outlet 22, so as to drive the valve element 30 to move in the direction of the liquid outlet 22 to close the liquid outlet 22, thereby preventing the liquid from flowing out.

It should be noted that in the present embodiment, the opening state and the closing state of the liquid outlet 22 are not continuously variable every time the centrifugal nozzle is used, and are not related to the rotation speed of the shaft assembly 121, that is, the liquid outlet 22 can only be switched between fully opened and fully closed. The arrangement can ensure that the flow rate of the liquid sprayed out by the centrifugal spray head is consistent every time the centrifugal spray head is used.

As shown in fig. 1, optionally, the centrifugal nozzle further includes a metal shaft sleeve 70, the metal shaft sleeve 70 is embedded in the first through hole, and the shaft assembly 121 is disposed through the metal shaft sleeve 70. Because the first centrifugal disk 41 has a high rotation speed when rotating, if the matching between the shaft assembly 121 and the first centrifugal disk 41 is not precise, the first centrifugal disk 41 is prone to shaking when rotating, in this embodiment, by providing the metal shaft sleeve 70, the precise matching between the shaft assembly 121 and the first centrifugal disk 41 can be realized, so that the first centrifugal disk 41 can keep dynamic balance when rotating at a high speed.

As shown in fig. 1, the centrifugal nozzle optionally further includes a first wear-resistant member 80, the first wear-resistant member 80 is disposed at an end of the liquid supply assembly 20 facing the valve core 30, and the liquid outlet 22 penetrates through the first wear-resistant member 80. Because the valve core 30 and the liquid supply assembly 20 can rotate relatively in a short time when the motor 10 is just started and in a short time after the motor 10 is stopped, the valve core 30 and the liquid supply assembly 20 are easily worn, and after long-time use, the valve core 30 is easily sealed to cause leakage, leakage and leakage of liquid.

As shown in fig. 1 and 6, the shaft assembly 121 may alternatively include an output shaft 1211 and a rotating shaft 1212, the output shaft 1211 is mounted on the motor body 11, the rotating shaft 1212 is detachably connected to the output shaft 1211, and the rotating shaft 1212 is provided with the guide member 103. Because axle subassembly 121 uses the back for a long time, probably need dismantle the change, in this embodiment, through setting up axle subassembly 121 to including output shaft 1211 and pivot 1212, pivot 1212 can dismantle with output shaft 1211 and be connected, so, can directly dismantle pivot 1212 and change, and need not carry out the dismouting to motor 10, has reduced the maintenance degree of difficulty.

As shown in fig. 1 and 6, the shaft assembly 121 optionally further includes a pin 1213, the output shaft 1211 and the rotating shaft 1212 are provided with a pin hole 1214 along a radial direction, and the pin 1213 is inserted into the pin hole 1214 and is in interference fit with the pin hole 1214 to fasten the rotating shaft 1212 to the output shaft 1211. Because the output shaft 1211 and the rotating shaft 1212 have a higher rotating speed when rotating, if the connection between the output shaft 1211 and the rotating shaft 1212 is not tight, the output shaft 1211 and the rotating shaft 1212 are easy to shake during operation, in this embodiment, the pin 1213 is arranged to penetrate through the pin hole 1214 and to be in interference fit with the pin hole 1214, so that the output shaft 1211 and the rotating shaft 1212 can be tightly connected, the output shaft 1211 and the rotating shaft 1212 are prevented from shaking during operation, and the reliability of the connection between the output shaft 1211 and the rotating shaft 1212 is improved.

It should be noted that the output shaft 1211 and the rotating shaft 1212 are not limited to being connected by the pin 1213, for example, in some other embodiments, the output shaft 1211 and the rotating shaft 1212 may be connected by other methods, such as a threaded connection.

As shown in fig. 7 and fig. 8, in some embodiments, the guide groove 102 is a spiral groove disposed on an outer side wall of the shaft assembly 121, and the guide member 103 is movably embedded in the spiral groove, when the motor 10 is turned on or turned off, under the action of inertia, the centrifugal disk assembly 40 and the shaft assembly 121 relatively rotate, and the spiral groove moves along an axial direction of the shaft assembly 121 to drive the centrifugal disk assembly 40 to move along the axial direction of the shaft assembly 121, so that the valve core 30 can move away from or close to the liquid outlet 22, thereby enabling the liquid outlet to be switched between the open state and the closed state.

It should be noted that, when the rotation speed of the motor 10 changes, under the action of inertia, the centrifugal disk assembly 40 and the shaft assembly 121 rotate relatively, and the spiral groove or the guide 103 moves along the axial direction of the shaft assembly 121 to drive the centrifugal disk assembly 40 to move along the axial direction of the shaft assembly 121, so that the valve core 30 can be far away from or close to the liquid outlet 22, so that the centrifugal nozzle can be switched between different opening states, and in the different opening states, the flow rate of the centrifugal nozzle is related to the rotation speed of the motor 10.

As shown in fig. 1, optionally, the liquid outlet closing assembly 60 includes a first spring 61, the centrifugal nozzle further includes a spring support 90, the spring support 90 is disposed on a side of the centrifugal plate assembly 40 opposite to the motor body 11 and is connected to the shaft assembly 121, the first spring 61 is interposed between the centrifugal plate assembly 40 and the spring support 90, and the spring is configured to provide a restoring force of the first centrifugal plate 41 near the liquid outlet 22.

As shown in fig. 1, optionally, the centrifugal nozzle further comprises a second wear member 100, the second wear member 100 being sandwiched between the centrifugal plate assembly 40 and the first spring 61. Since the centrifugal plate assembly 40 and the first spring 61 are relatively rotated during a short period of time when the motor 10 is just turned on and during a short period of time when the motor 10 is turned off, which results in easy wear between the centrifugal plate assembly 40 and the first spring 61, in the embodiment, by disposing the second wear-resistant member 100 between the centrifugal plate assembly 40 and the first spring 61, the wear between the centrifugal plate assembly 40 and the first spring 61 can be reduced, the service life can be prolonged, and at the same time, the second wear-resistant member 100 can maintain the preload of the first spring 61 well constant due to less wear. Optionally, the second wear part 100 is a metal wear part.

As shown in fig. 1, optionally, the centrifugal nozzle further includes a bolt 110, a threaded hole is provided at an end of the shaft assembly 121 connected to the spring support 90, and the bolt 110 is inserted through the spring support 90 and the threaded hole to lock the spring support 90 to the shaft assembly 121.

As shown in fig. 1, optionally, the centrifugal nozzle further includes a locking washer 120 sleeved on the bolt 110, and the locking washer 120 is used for preventing the bolt 110 from loosening. As can be seen from the above, the shaft assembly 121 has a high rotation speed in the operation process, which easily causes the bolt 110 to loosen, resulting in the situation that the centrifugal disc assembly 40 falls off, in this embodiment, the loosening prevention gasket 120 is arranged, so that the bolt 110 can be well prevented from loosening.

As shown in fig. 1, optionally, the centrifugal nozzle further includes a locknut 130, one end of the shaft assembly 121 connected to the spring support 90 is provided with an external thread, one side of the spring support 90 facing the centrifugal disk assembly 40 is provided with a sunken groove, and the locknut 130 is embedded in the sunken groove and is in threaded fit with the shaft assembly 121. By providing the locknut 130, the bolt 110 can be further prevented from loosening.

It should be noted that the port closing assembly 60 is not limited to the manner of providing the first spring 61, for example, in other embodiments, as shown in fig. 9, the port closing assembly 60 includes a first magnet assembly 62 and a second magnet assembly 63, the first magnet assembly 62 is connected to the centrifugal plate assembly 40, the second magnet assembly 63 is mounted to the liquid supply assembly 20 or the shaft assembly 121, and the second magnet assembly 63 provides a restoring force for the first centrifugal plate 41 to approach the port 22 by a magnetic force acting on the first magnet assembly 62. That is, the liquid outlet closing assembly 60 adopts the magnetic force mode to drive the first centrifugal disc 41 to move towards the liquid outlet 22, and through the magnetic force driving mode, the resistance can be reduced to the greatest extent, so that the opening and closing of the liquid outlet 22 are smoother, and no abrasion is generated between the first magnet assembly 62 and the second magnet assembly 63, so that the service life can be effectively prolonged.

As shown in FIG. 9, for example, the second magnet assembly 63 is mounted to the liquid supply assembly 20 and the first magnet assembly 62 and the second magnet assembly 63 are attracted to each other to move the centrifuge disk assembly 40 toward the liquid outlet 22.

As shown in FIG. 9, for another example, the centrifugal nozzle further includes a first magnet holder 140, the first magnet holder 140 is disposed on a side of the centrifuge disk assembly 40 opposite to the liquid supply assembly 20 and connected to the shaft assembly 121, the second magnet assembly 63 is mounted on the first magnet holder 140, and the first magnet assembly 62 and the second magnet assembly 63 repel each other so that the centrifuge disk assembly 40 moves toward the liquid outlet 22.

It should be noted that the centrifugal nozzle is not limited to the above configuration, for example, in other embodiments, as shown in fig. 10 and 11, the rotatable assembly 12 includes a shaft assembly 121, the centrifugal nozzle further includes a valve core support 150, the valve core support 150 is movably sleeved on the shaft assembly 121, the valve core 30 is mounted on the valve core support 150, the liquid outlet closing assembly 60 includes a first magnet assembly 62 and a second magnet assembly 63, the first magnet assembly 62 is mounted on the valve core support 150, the second magnet assembly 63 is mounted on the liquid supply assembly 20 or the shaft assembly 121 or the centrifugal disk assembly 40, and the second magnet assembly 63 provides a restoring force for the valve core support 150 to approach the liquid outlet 22 through a magnetic force with the first magnet assembly 62. The outlet opening assembly 50 of the present embodiment may refer to the above embodiments, and will not be described herein.

When motor 10 opens, liquid outlet opening assembly 50 and rotatable component 12 relative motion for case support 150 keeps away from liquid outlet 22, drives case 30 and keeps away from liquid outlet 22, thereby opens liquid outlet 22 and makes liquid can spray away from centrifugal disc subassembly 40, and when motor 10 closed, second magnet subassembly 63 is through the magnetic force effect with first magnet subassembly 62, makes case support 150 be close to liquid outlet 22, drives the discovery and is close to liquid outlet 22, thereby closes liquid outlet 22 in order to prevent that liquid from flowing out. From the foregoing, by means of magnetic driving, the resistance can be reduced to the greatest extent, so that the liquid outlet 22 can be opened and closed more smoothly, and no abrasion is generated between the first magnet assembly 62 and the second magnet assembly 63, so that the service life can be effectively prolonged. Port opening assembly 50 may be referred to above and will not be described in detail herein.

As shown in fig. 10, optionally, the second magnet assembly 63 is mounted to the liquid supply assembly 20, and the first magnet assembly 62 and the second magnet assembly 63 attract each other, thereby moving the valve cartridge holder 150 toward the liquid outlet 22 and moving the valve cartridge 30 toward the liquid outlet 22.

As shown in fig. 11, optionally, the second magnet assembly 63 is mounted on the shaft assembly 121, and the first magnet assembly 62 and the second magnet assembly 63 repel each other, thereby driving the valve element support 150 toward the liquid outlet 22 and driving the valve element 30 toward the liquid outlet 22. It should be noted that, in the present embodiment, the second magnet assembly 63 may be mounted to the centrifugal disk assembly 40.

As shown in fig. 11, optionally, the valve core holder 150 is provided with a second through hole 1501 and an annular groove 1502, the shaft assembly 121 is arranged through the second through hole 1501, the first magnet assembly 62 includes a first magnet 621, and the first magnet 621 is arranged in the annular groove 1502.

As shown in fig. 11, optionally, the second magnet assembly 63 includes a second magnet holder 631 and a second magnet 632, the second magnet holder 631 includes a first end and a second end opposite to each other, the first end of the second magnet holder 631 is mounted to the shaft assembly 121, the second end of the second magnet holder 631 is embedded in the annular groove 1502, and the second magnet 632 is mounted to the second end of the second magnet holder 631. It should be noted that the second magnet holder 631 may also be mounted to the centrifugal plate assembly 40.

It should be noted that, the centrifugal nozzle is not limited to the above-mentioned configuration, for example, in some other embodiments, as shown in fig. 12 and 13, the rotatable assembly 12 includes a shaft assembly 121, the centrifugal disc assembly 40 is mounted on the shaft assembly 121, the centrifugal nozzle further includes a valve core holder 150, the valve core holder 150 is movably sleeved on the shaft assembly 121, the valve core 30 is mounted on the valve core holder 150, the liquid outlet opening assembly 50 includes a first elastic member 51, the first elastic member 51 is mounted between the liquid supply assembly 20 and the valve core holder 150, and the first elastic member 51 is used for providing an elastic force to make the valve core holder 150 far away from the liquid outlet 22.

It should be noted that the port opening assembly 50 is not limited to the above configuration, for example, in other embodiments, as shown in fig. 14, the port opening assembly 50 includes a third magnet assembly 52 and a fourth magnet assembly 53, the third magnet assembly 52 is mounted to the valve core support 150, the fourth magnet assembly 53 is mounted to the liquid supply assembly 20 or the shaft assembly 121 or the centrifugal plate assembly 40, and the fourth magnet assembly 53 drives the valve core support 150 away from the liquid outlet 22 by magnetic force with the third magnet assembly 52.

As shown in fig. 13 and 15, the port closing assembly 60 optionally includes a centrifugal shell 64, a centrifugal ball 65 and a second elastic member 66, the centrifugal shell 64 is mounted on the shaft assembly 121, the centrifugal shell 64 is radially provided with a mounting groove 641, the centrifugal ball 65 is provided in the mounting groove 641, the second elastic member 66 is provided in the mounting groove 641, and the centrifugal ball 65 pushes the valve core support 150 to move toward the port 22 under the driving of the second elastic member 66.

As shown in fig. 13 and 15, optionally, the side of the valve core support 150 opposite to the liquid supply assembly 20 is provided with an inclined guide surface 1503, the centrifugal ball 65 abuts against the guide surface 1503, the valve core support 150 has a component force towards the liquid supply assembly 20 under the pushing of the centrifugal ball 65, and the valve core support 150 moves towards the liquid outlet 22 under the pushing of the component force. It should be noted that in this embodiment, the opening state of the liquid outlet 22 has a plurality of sub-states that can be continuously changed each time the centrifugal nozzle is used, and in different sub-states, the flow rate of the centrifugal nozzle is related to the rotation speed of the shaft assembly 121, specifically, the higher the rotation speed of the shaft assembly 121, the larger the opening degree of the liquid outlet 22. In actual use, the rotation speed of the shaft assembly 121 can be controlled to control the flow rate of the liquid ejected from the liquid outlet 22.

As shown in fig. 13 and 15, optionally, the centrifugal ball 65 and the second elastic member 66 are combined to form a centrifugal ball assembly, and the number of centrifugal ball assemblies is plural, and the plural centrifugal ball assemblies are symmetrically arranged around the valve core holder 150. Optionally, the number of centrifugal ball assemblies is three, and the three centrifugal ball assemblies are symmetrically arranged around the valve core carrier 150. In this arrangement, the valve core holder 150 is stressed in a balanced manner, so that the valve core 30 can achieve a good sealing effect.

As shown in fig. 3 and 16, in some embodiments, the port opening assembly 50 includes a lever 54 and a weight 55, the lever 54 is rotatably coupled to the rotatable assembly 12, the lever 54 includes opposite first and second ends, the first end of the lever 54 is coupled to the valve cartridge 30, and the weight 55 is coupled to the second end of the lever 54, wherein when the motor 10 is activated, the weight 55 moves in the direction E toward the liquid supply assembly 20 under the influence of centrifugal force, and the second end of the lever 54 presses the valve cartridge 30 downward in the direction F to move the valve cartridge 30 away from the liquid outlet 22. It should be noted that in this embodiment, the opening state of the liquid outlet 22 has a plurality of sub-states that can be continuously changed each time the centrifugal spray head is used, and in different sub-states, the flow rate of the centrifugal spray head is related to the rotation speed of the shaft assembly 121, specifically, the higher the rotation speed of the shaft assembly 121 is, the larger the opening degree of the liquid outlet 22 is. In actual use, the rotation speed of the shaft assembly 121 can be controlled to control the flow rate of the liquid ejected from the liquid outlet 22.

Alternatively, the lever 54 and the weight member 55 are combined to form a plurality of lever assemblies, and the plurality of lever assemblies are symmetrically arranged around the valve core 30. Optionally, the number of lever assemblies is three, and the three lever assemblies are symmetrically disposed around the valve cartridge 30. In this arrangement, the spool 30 is evenly stressed such that the opening of the spool 30 is maintained uniform.

Optionally, the port closure assembly 60 includes a second spring 67, the second spring 67 being interposed between the centrifugal disc assembly 40 and the valve spool 30, the second spring 67 being configured to provide a restoring force to the valve spool 30 adjacent the port 22.

Optionally, the centrifugal plate assembly 40 includes a first centrifugal plate 41 and a mounting post 43, the mounting post 43 includes a first end and a second end opposite to each other, the first end of the mounting post 43 is connected to the first centrifugal plate 41, and the valve element 30 is movably sleeved on the mounting post 43.

It should be noted that the outlet closing assembly 60 is not limited to be disposed as the second spring 67, and may also be disposed as the first magnet assembly 62 and the second magnet assembly 63, which are described above, and the manner of disposing the first magnet assembly 62 and the second magnet assembly 63 may refer to the foregoing, which is not described herein again.

As shown in fig. 17, the embodiment of the present invention further provides a spraying system, the spraying system includes a liquid storage tank 201, a water pump 202 and the centrifugal nozzle, the water pump 202 is connected to the liquid storage tank 201, and the centrifugal nozzle is connected to the water pump 202. The connection between the water pump 202 and the liquid storage tank 201 may be the direct connection between the water pump 202 and the liquid storage tank 201, or the connection between the water pump 202 and the liquid storage tank 201 may be the connection between the water pump 202 and the liquid storage tank 201 through a pipeline. The centrifugal nozzle may be connected to the water pump 202 directly or via a pipeline to the water pump 202. Alternatively, the water pump 202 is a vane pump mounted to the bottom of the tank 201.

As shown in fig. 18, the embodiment of the utility model also provides a plant protection unmanned aerial vehicle, and the plant protection unmanned aerial vehicle who provides includes unmanned aerial vehicle body 301 and foretell sprinkler system, and sprinkler system installs in unmanned aerial vehicle body 301.

Optionally, unmanned aerial vehicle body 301 includes frame 3011, horn 3012 and power component 3013, and horn 3012 and frame 3011 mechanical coupling, and power component 3013 installs in horn 3012 for provide plant protection unmanned aerial vehicle's flight power, and wherein, liquid reserve tank 201 demountable installation is in frame 3011, and centrifugal spray installs in the below of power component 3013, and water pump 202 passes through the inlet 22 connection of pipeline and centrifugal spray. Alternatively, the duct may extend along an outer sidewall of the horn 3012. Alternatively, the horn 3012 is provided as a hollow tube, and the duct is provided inside the horn 3012.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (17)

1. A centrifugal spray head, comprising:

a motor including a motor body and a rotatable assembly;

the liquid supply assembly is arranged on the motor main body and is provided with a liquid inlet and a liquid outlet;

the valve core is used for opening or closing the liquid outlet;

the centrifugal disc assembly is arranged on the rotatable assembly, and when the liquid outlet is in an opening state, liquid enters the centrifugal disc assembly through the liquid outlet and is sprayed out through the centrifugal disc assembly;

the liquid outlet opening assembly is movably connected to the rotatable assembly, and directly or indirectly acts on the valve core, so that the valve core can be far away from the liquid outlet, and the liquid outlet is in an opening state;

the liquid outlet sealing assembly is used for providing restoring force for the valve core to be close to the liquid outlet, so that the valve core can be close to and seal the liquid outlet, and the liquid outlet is in a closed state;

when the motor is turned off, the liquid outlet closing assembly provides restoring force to enable the valve core to be close to the liquid outlet, so that the liquid outlet is closed to prevent the liquid from flowing out.

2. The centrifugal spray head according to claim 1, wherein said open state comprises a plurality of continuously variable sub-states, and the opening degree of said liquid outlet is different in different said sub-states, so that the flow rate of the liquid sprayed from said centrifugal spray head is different;

wherein the open state is associated with a rotational speed of the rotatable assembly, and the open state is adjustable to different sub-states by adjusting the rotational speed of the rotatable assembly.

3. The centrifuge nozzle of claim 1, wherein the rotatable assembly comprises a shaft assembly, the centrifuge disk assembly is mounted to the shaft assembly, the centrifuge nozzle further comprises a valve core holder, the valve core holder is movably sleeved to the shaft assembly, and the valve core is mounted to the valve core holder;

the liquid outlet opening assembly comprises a first elastic piece, the first elastic piece is arranged between the liquid supply assembly and the valve core support, and the first elastic piece is used for providing elastic force so that the valve core support is far away from the liquid outlet.

4. The centrifugal spray head of claim 1, wherein said rotatable assembly comprises a shaft assembly, said centrifuge disc assembly being mounted to said shaft assembly, said centrifugal spray head further comprising a valve core holder, said valve core holder being movably sleeved on said shaft assembly, said valve core being mounted to said valve core holder, said outlet opening assembly comprising:

a first magnet assembly mounted to the spool support;

the second magnet assembly is arranged on the liquid supply assembly or the shaft assembly or the centrifugal disc assembly and drives the valve core support to be far away from the liquid outlet through the magnetic action of the second magnet assembly and the first magnet assembly.

5. The centrifugal spray head of claim 3 or 4, wherein said port closure assembly comprises:

the centrifugal shell is arranged on the shaft assembly, and is provided with an assembling groove along the radial direction;

the centrifugal ball is arranged in the assembling groove;

the second elastic piece is arranged in the assembling groove;

the centrifugal ball is driven by the second elastic piece to push the valve core support to move towards the liquid outlet.

6. The centrifugal spray head of claim 5, wherein the centrifugal ball and the second resilient member combine to form a plurality of centrifugal ball assemblies, and the plurality of centrifugal ball assemblies are symmetrically disposed around the valve core support.

7. The centrifugal spray head of claim 1, wherein said port opener assembly comprises:

a lever rotatably coupled to the rotatable assembly, the lever including opposite first and second ends, the first end of the lever coupled to the valve cartridge;

a weight member connected to the second end of the lever;

when the motor is started, the counterweight part moves towards the direction of the liquid supply assembly under the action of centrifugal force, and the second end of the lever presses the valve core downwards, so that the valve core is far away from the liquid outlet.

8. The centrifugal sprayer according to claim 7, wherein the lever and the weight member are combined to form a plurality of lever assemblies, and the plurality of lever assemblies are symmetrically disposed around the valve core.

9. The centrifugal spray head of claim 7, wherein the port closure assembly comprises a second spring sandwiched between the spin plate assembly and the valve element, the second spring for providing a restoring force to the valve element adjacent the outlet port.

10. The centrifuge head of claim 7, wherein the centrifuge disk assembly comprises:

a first centrifugal disc;

the assembly column comprises a first end and a second end which are opposite, the first end of the assembly column is connected with the first centrifugal disc, and the valve core is movably sleeved on the assembly column.

11. The centrifugal spray head of claim 10, wherein said exit port closure assembly comprises:

the first magnet assembly is connected with the valve core;

and the second magnet assembly is arranged on the rotatable assembly or the centrifugal disc assembly and drives the first centrifugal disc to be close to the liquid outlet through the magnetic action of the second magnet assembly and the first magnet assembly.

12. The centrifugal spray head of claim 1 wherein said motor body is a stator, said stator including a stationary shaft, said rotatable assembly including a rotor, said rotor surrounding said stationary shaft;

the liquid supply assembly comprises a hollow shaft, the hollow shaft penetrates through the fixed shaft, the liquid inlet and the liquid outlet are respectively arranged at two ends of the hollow shaft, and liquid flows out of the liquid outlet after entering the inner cavity of the hollow shaft from the liquid inlet.

13. The centrifuge nozzle of claim 1, wherein said rotatable assembly comprises a shaft assembly, said motor body including a forward end and a rearward end opposite said forward end, said shaft assembly protruding from said forward end of said motor body;

the liquid supply assembly is arranged at the front end of the motor main body, a liquid cavity is formed by the liquid supply assembly and the front end of the motor main body in a surrounding mode, and liquid in the liquid cavity directly contacts the front end of the motor main body to dissipate heat of the motor main body.

14. The centrifugal spray head of claim 13, wherein the liquid supply assembly comprises:

the first annular shell comprises a first end and a second end which are opposite, the first end of the first annular shell is connected with the front end of the motor main body, and the first annular shell is provided with the liquid inlet;

the second annular shell is arranged on the inner side of the first annular shell and sleeved outside the shaft assembly, and comprises a first end and a second end which are opposite;

the annular bottom plate is connected between the second end of the first annular shell and the second end of the second annular shell, and the annular bottom plate is provided with the liquid outlet;

the first annular shell, the second annular shell, the annular bottom plate and the front end of the motor main body are enclosed to form the liquid cavity.

15. The centrifugal spray head of claim 14, wherein the front end of the motor body is provided with a boss through which the shaft assembly passes, the first end of the second annular housing being connected to the boss, the liquid supply assembly further comprising:

a first seal member provided between a first end of the first annular case and a front end of the motor main body;

a second seal disposed between the first end of the second annular shell and the boss.

16. A sprinkler system, comprising:

a liquid storage tank;

the water pump is connected with the liquid storage tank;

a centrifugal spray head as claimed in any one of claims 1 to 15, which is connected to the water pump.

17. A plant protection unmanned aerial vehicle, its characterized in that includes:

an unmanned aerial vehicle body;

the spraying system of claim 16, mounted to the drone body.

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