CN112601456A

CN112601456A - Centrifugal spray head, spraying system and movable platform

Info

Publication number: CN112601456A
Application number: CN201980034410.9A
Authority: CN
Inventors: 舒展; 周乐; 周万仁
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2021-04-02
Anticipated expiration: 2039-08-30
Also published as: CN115889014A; CN112601456B; WO2021035747A1

Abstract

A centrifugal spray head, a spraying system and a movable platform are provided, the centrifugal spray head comprises a liquid spraying device (10), a valve body device (20), a control device (30) and a driving device (40), the liquid spraying device (10) comprises a liquid inlet (11), a liquid outlet (12) and a cavity (13) communicated with the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel (131); the valve body device is connected with the cavity (13); the valve comprises a valve seat (21) and a valve core (22), wherein the valve core (22) can move relative to the valve seat to adjust the liquid flow of the liquid flow channel (131); the control device (30) is electrically connected with the valve body device (20) and is used for controlling the valve core (22) to move relative to the valve seat (21); the drive device (40) is connected to the liquid ejecting device (10) and drives the liquid ejecting device (10) to eject the liquid.

Description

Centrifugal spray head, spraying system and movable platform

Technical Field

The embodiment of the invention relates to the technical field of spraying systems for plant protection, in particular to a centrifugal type spray head, a spraying system and a movable platform.

Background

With the improvement of environmental requirements, the standards of spraying systems for preventing dripping are more strict in various countries, for example, the domestic requirement that the quantity of dripping is not more than 5 drops after 5 seconds of spraying stop is met, the Japan requirement that the spraying system can stop spraying within 1 second, and then 1 drop is not allowed to drip.

The traditional centrifugal nozzle can also generate the phenomenon of leakage after stopping spraying, thus not only wasting the liquid medicine, but also polluting crops and environment.

Disclosure of Invention

The embodiment of the invention provides a centrifugal spray head, a spraying system and a movable platform, which can effectively save liquid medicine and avoid environmental pollution caused by leakage.

A first aspect of an embodiment of the present invention provides a centrifugal nozzle, including:

the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated between the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel;

the valve body device is connected to the cavity; the valve body device comprises a valve seat and a valve core, and the valve core is movably arranged on the valve seat and is used for moving relative to the valve seat to adjust the liquid flow of the liquid flow channel;

the control device is electrically connected with the valve body device and is used for controlling the valve core to move relative to the valve seat; and the number of the first and second groups,

the driving device is connected with the liquid spraying device and can drive the liquid spraying device to discharge the liquid;

when the driving device does not drive the liquid spraying device to discharge the liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge the liquid any more.

The centrifugal sprayer provided by the embodiment comprises a liquid spraying device, wherein the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated with the liquid inlet and the liquid outlet, a liquid flow channel is formed in the cavity, a valve body device is connected to the cavity and comprises a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow of the liquid flow channel, a control device controls the valve core to move relative to the valve seat, a driving device is connected with the liquid spraying device, and the driving device can drive the liquid spraying device to discharge liquid; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, through the liquid flow of valve body device control centrifugal nozzle, because the state switching of valve body device is quick, and it is fast to the full-cut-off state switching by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment.

A second aspect of an embodiment of the present invention provides a spraying system, including a water pump, and a centrifugal nozzle communicated with the water pump;

wherein the centrifugal spray head comprises:

the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity which is connected and communicated between the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel;

when the driving device does not drive the liquid spraying device to discharge the liquid any more, the control device controls the valve core to block the liquid flow channel, so that the liquid outlet does not discharge the liquid any more.

In the spraying system provided by this embodiment, the spraying system includes a centrifugal nozzle, the centrifugal nozzle includes a liquid spraying device, the liquid spraying device includes a liquid inlet, a liquid outlet, and a cavity communicating the liquid inlet and the liquid outlet, the cavity forms a liquid flow channel, a valve body device is connected to the cavity, the valve body device includes a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow of the liquid flow channel, a control device controls the valve core to move relative to the valve seat, a driving device is connected to the liquid spraying device, and the driving device can drive the liquid spraying device to discharge; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, through the liquid flow of valve body device control centrifugal nozzle, because the state switching of valve body device is quick, and it is fast to the full-cut-off state switching by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment.

A third aspect of an embodiment of the present invention provides a movable platform, including a frame, and at least one spraying system disposed on the frame;

wherein the spraying system comprises: a water pump, a water tank, and a centrifugal nozzle; the water pump is respectively communicated with the water tank and the centrifugal spray head;

the centrifugal spray head comprises:

The movable platform provided by the embodiment of the invention comprises a rack and at least one spraying system arranged on the rack; the spraying system comprises a water pump, a water tank and a centrifugal sprayer, the centrifugal sprayer comprises a liquid spraying device and a control device, the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated with the liquid inlet and the liquid outlet, a liquid flow channel is formed in the cavity, the valve body device is connected to the cavity and comprises a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow of the liquid flow channel, the control device controls the valve core to move relative to the valve seat, the driving device is connected with the liquid spraying device, and the driving device can drive; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, through the liquid flow of valve body device control centrifugal nozzle, because the state switching of valve body device is quick, and it is fast to the full-cut-off state switching by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed 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 it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a centrifugal spray head according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a centrifugal spray head provided in accordance with one embodiment of the present invention;

FIG. 3 is a cross-sectional view of a centrifugal spray head provided in accordance with another embodiment of the present invention;

FIG. 4 is an electrical schematic diagram of a centrifugal spray head provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a movable platform according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. 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.

In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

Furthermore, the term "coupled" is intended to include any direct or indirect coupling. Thus, if a first device couples to a second device, that connection may be through a direct connection, or through an indirect connection via other devices.

It should be understood that the term "and/or" is used herein only to describe an association relationship of associated objects, and means that there may be three relationships, for example, a1 and/or B1, which may mean: a1 exists alone, A1 and B1 exist simultaneously, and B1 exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

With the improvement of environmental protection requirements, the standards of spraying systems from leaking are becoming stricter in various countries. The centrifugal nozzle throws the liquid medicine out by means of centrifugal force, and can be applied to a spraying system. For example, the centrifugal nozzle used in the movable platform may still have a leakage phenomenon after stopping spraying, but after stopping spraying, the movable platform may have a certain distance from the user, and it is difficult for the user to observe the leakage phenomenon after stopping spraying. Or, the user is inconvenient to observe the centrifugal nozzle when operating the movable platform, and further the phenomenon of drop leakage of the centrifugal nozzle after stopping spraying is difficult to observe. In addition, the leakage of the liquid medicine may cause damage to crops.

The inventor finds out the technical problem through creative work. Because the motor that the drive flail dish is rotatory slows down to the rotational speed and needs certain time when being 0 by high-speed rotation, simultaneously, because the flail dish has certain inertia, leads to traditional centrifugal nozzle still to take place to leak and drip the phenomenon after stopping spouting, so, not only wasted the liquid medicine to still cause the pollution to the environment.

The centrifugal spray head that this embodiment provided can be used for movable platform, for example unmanned aerial vehicle, pesticide spray truck, manpower sprinkler etc.. The drone may be an agricultural plant protection drone. When this centrifugal nozzle is used for unmanned aerial vehicle, centrifugal nozzle can be according to unmanned aerial vehicle's the fine flow of adjusting of speed, can drive hydrojet device discharge liquid, throws away the liquid medicine, forms the droplet. The size of the fog drops can be realized by adjusting the rotating speed and the structure of the nozzle turntable. Above-mentioned centrifugal nozzle is provided with above-mentioned valve body device, can realize just can driving a plurality of centrifugal nozzles with a water pump in unmanned aerial vehicle, and realizes the flow control of each centrifugal nozzle by drive arrangement independent control respectively between each centrifugal nozzle, has overcome the water pump quantity and the shower nozzle quantity phase-match on traditional unmanned aerial vehicle, redundancy, the high cost that causes.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example one

FIG. 1 is a schematic structural diagram of a centrifugal spray head according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a centrifugal spray head according to an embodiment of the present invention. As shown in fig. 1-2, the centrifugal nozzle provided in this embodiment includes: liquid ejecting apparatus 10, valve body apparatus 20, control apparatus 30, and driving apparatus 40.

The liquid spraying device 10 includes a liquid inlet 11 and a liquid outlet 12, and a liquid flow channel 131 communicating between the liquid inlet 11 and the liquid outlet 12, wherein the liquid flow channel 131 may be formed by a tube, or a cavity 13 in the liquid spraying device 10, and in this embodiment, it is preferable that the liquid flow channel 131 is formed by the cavity 13. The inlet port 11 may be adapted to communicate with a water pump 100 of a sprinkler system and the outlet port 12 may be adapted to communicate with a spray pan or nozzle. The water pump 100 may be in communication with a water reservoir, and the water pump 100 pumps liquid in the water reservoir toward the liquid inlet 11 of the liquid spraying device 10, then through the liquid flow channel 131 to the liquid outlet 12 and out through a spray plate or nozzle.

The valve body device 20 is connected to the cavity 13; the valve body assembly 20 includes a valve seat 21 and a valve core 22, wherein the valve core 22 is movably disposed on the valve seat 21 and is configured to move relative to the valve seat 21 to adjust a flow rate of the fluid channel 131. The valve body assembly 20 may be fixedly connected to the cavity 13 via a valve seat 21, for example, clamped or fixed to the cavity 13 via a fastener, and the valve core 22 is located in the valve seat 21 and can move inside the valve seat 21, and in particular, the valve core 22 may slide in a predetermined direction in the valve seat 21.

It should be noted that, the valve element 22 moves in the valve seat 21 to adjust the liquid flow rate of the liquid flow channel 131, and specifically, the valve element 22 directly or indirectly occupies the cross-sectional position of the liquid flow channel 131 during the movement process, so as to adjust the liquid flow rate of the liquid flow channel 131. When the spool 22 occupies the full cross-sectional position of the flow channel 131, the flow channel 131 is blocked and liquid cannot be discharged through the flow channel 131; when the spool 22 occupies a partial sectional position of the flow channel 131, the flow channel 131 is partially blocked, and the flow rate of the liquid passing through the flow channel 131 per unit time is reduced; when the spool 22 is completely withdrawn from the cross-sectional position of the flow channel 131, the flow rate of the liquid in the flow channel 131 is maximized.

The flow rate of the liquid flow channel 131 refers to the amount of liquid passing through per unit time. According to the different proportions of the liquid channel 131 occupied by the valve core 22, the corresponding liquid flow rate passing through the liquid channel 131 in unit time is different, so that the liquid flow rate of the liquid channel 131 can be adjusted by adjusting the movement of the valve core 22 in the valve seat 21.

Fig. 4 is an electrical control schematic diagram of a centrifugal nozzle provided in an embodiment of the present invention. As shown in fig. 4, the control device 30 according to the embodiment of the present invention is electrically connected to the valve body device 20 for controlling the movement of the valve element 22 relative to the valve seat 21. The driving device 40 is connected to the liquid ejecting apparatus 10, and the driving device 30 can drive the liquid ejecting apparatus 10 to discharge the liquid. Specifically, the liquid may refer to a drug solution, water, or other liquid. The driving device 30 can drive the liquid in the liquid spraying device 10 to generate a larger centrifugal force to be thrown out all around, taking the liquid medicine as an example, the liquid medicine can be dispersed into liquid drops with a smaller volume under the action of the centrifugal force, so that the contact area of the liquid medicine and crops is enlarged, the liquid medicine has a larger diffusion range, and a better liquid medicine spraying effect is realized.

When the driving device 30 no longer drives the liquid spraying device 10 to discharge liquid, the control device 30 can control the valve core 22 to block the liquid channel 131, so that the liquid outlet 12 no longer discharges liquid.

Specifically, the driving device 30 may be electrically connected to the control device 30, and when the driving device 30 is powered on, the driving device 30 can drive the liquid spraying device 10 to discharge the liquid. When the driving device 30 is de-energized, the driving device 30 no longer drives the liquid ejection device 10 to eject the liquid. In other embodiments, the driving device 30 may be capable of driving the liquid ejecting apparatus 10 to eject liquid when the driving device 30 receives a high level signal, and the driving device 30 may not drive the liquid ejecting apparatus 10 to eject liquid when the driving device 30 receives a low level signal.

When the liquid ejecting apparatus 10 is driven by the driving device 30 to discharge the liquid, the valve body 22 can be moved toward the valve seat 21. Specifically, when the driving device 30 drives the liquid ejecting apparatus 10 to discharge the liquid, the control device 30 can control the valve element 22 to move toward the valve seat 21.

The control device 30 may also adjust the liquid flow rate in the liquid flow path 131 by controlling the operating frequency of the valve body 22. It is understood that the faster the operating frequency of the spool 22, the greater the flow rate of the fluid in the fluid passage 131, and the slower the operating frequency of the spool 22, the less the flow rate of the fluid in the fluid passage 131. In one spraying operation, the valve core 22 may be operated at a high frequency for a certain period of time, and the valve core 22 may be operated at a low frequency for a certain period of time, thereby achieving variable frequency spraying. In the case of using one water pump, the control device 30 can control the valve body device 20 to independently control the flow rates of the plurality of centrifugal nozzles.

The driving device 30 can stop driving the liquid spraying device 10 to discharge the liquid after receiving the spray stopping command, and at this time, the control device 30 can synchronously control the valve core 22 to move to block the liquid flow channel 131, that is, when stopping spraying, the control device can immediately block the liquid flow channel 131 through the valve body device 20, thereby playing a role of preventing dripping leakage, wherein the spray stopping command can be triggered by a user or preset by a spraying system. The centrifugal sprayer provided by the embodiment comprises a liquid spraying device, wherein the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated with the liquid inlet and the liquid outlet, a liquid flow channel is formed in the cavity, a valve body device is connected to the cavity and comprises a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow of the liquid flow channel, a control device controls the valve core to move relative to the valve seat, a driving device is connected with the liquid spraying device, and the driving device can drive the liquid spraying device to discharge liquid; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, can be through the liquid flow of valve body device control centrifugal nozzle, and because the state switching of valve body device is quick, switch fast to the full-cut-off state by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment.

Example two

In this embodiment, further, as shown in fig. 1 and 2, the liquid ejecting apparatus 10 may include a head main body 101, and the valve body apparatus 20 and the liquid flow path 131 are provided in the head main body 101. The nozzle body 101 may include an outer housing 1011, the outer housing 1011 enclosing a cavity 1012, and the valve body assembly 20 and the fluid flow passageway 131 may be disposed within the cavity 1012. The driving device 30 may be specifically configured to provide a rotational force to generate a large centrifugal force to the liquid in the liquid flow channel 131, so as to atomize and spray the liquid droplets.

The liquid ejection device 10 may further include a tray 102, and the tray 102 may be formed with a spray passage 1021 inside thereof in communication with the liquid outlet 12. The driving device 30 is connected to the spray plate 102 for driving the spray plate 102 to rotate to discharge the liquid.

Further, the spray pan 102 may include an upper spray pan 1021 and a lower spray pan 1022, with the upper spray pan 1021 and the lower spray pan 1022 defining a spray path therebetween. The spraying channel can be curved or linear, the spraying channel is communicated with the outside, and the liquid enters the spraying channel from the liquid outlet 12 and then is discharged in the form of atomized small droplets. A liquid accumulation cavity 1025 is concavely formed in the middle of the lower spray tray 1022 towards the direction far away from the upper spray tray 1021, and the liquid accumulation cavity 1025 is communicated with the spray channel 1021. The design of the liquid accumulation cavity 1025 can be beneficial to the accumulation of liquid, and when the spray plate 102 rotates at high speed, the accumulated liquid in the liquid accumulation cavity 1025 is enough, so that liquid drops can be uniformly and sufficiently thrown out, and high-quality spraying is realized.

In addition, an electric adjusting plate 50 may be fixed in the cavity 1012, the electric adjusting plate 50 may be hermetically disposed in the liquid spraying device 10, and may be disposed in the cavity 1012 specifically by a fastener (e.g., a screw), the electric adjusting plate 50 is electrically connected to the driving device 30 for adjusting the rotation speed of the driving device 30, and when the driving device 30 is a motor, the electric adjusting plate 50 is specifically used for adjusting the speed of the motor. The electric tuning board 50 may be connected by a wire 60, one end of the wire 60 may be located inside the housing 1011 and connected to the electric tuning board 50, and the other end of the wire 60 may pass through the housing 1011 and pass out of the top of the head main body 101. The trimming board 50 may drive the motor by a PWM wave modulation scheme. And the motor can be an external rotor motor or an internal rotor motor, in this embodiment, preferably, the motor is an external rotor motor.

As shown in fig. 2, the valve seat 21 may have a valve seat passage 211 therein, the valve seat passage 211 being capable of communicating with the flow passage 131, the valve seat passage 211 being capable of accommodating the spool 22. The control device 30 may be used to control the movement of the spool 22 relative to the valve seat 21 to control the opening degree of the valve body device 10, thereby regulating the flow rate of the liquid from the liquid flow channel 131, wherein the movement direction of the spool 22 intersects with the extension direction of the liquid flow channel 131. The valve body device 10 may include an inlet a and an outlet b, the valve seat passage 211 communicates with the inlet a and the outlet b, and the liquid enters the valve seat passage 211 through the inlet a and then flows out of the valve seat passage 211 through the outlet b. As shown in fig. 2, since the valve seat passage 211 communicates with the flow passage 131, the moving direction of the spool 22 intersects with the extending direction of the flow passage 131, thereby making it possible to occupy different positions of the valve seat passage 211 and thus different positions of the flow passage 131 during the movement of the spool 22 in the valve seat 21, and thus adjust the flow rate of the flow passage 131.

In the present embodiment, it is preferable that the movement direction of the spool 22 is substantially perpendicular to the extension direction of the liquid flow channel 131. This allows the spool 22 to occupy the cross-sectional position of the liquid flow path 131 more effectively, and the flow rate of the liquid flow path 131 to be controlled more efficiently, and the structure is designed more simply.

In the present embodiment, the material of the valve core 22 may be a corrosion-resistant material, that is, the entire valve core 22 is made of a corrosion-resistant material, or the outer surface of the valve core 22 is covered by a corrosion-resistant layer. Likewise, the material of the valve seat 21 may also be a corrosion resistant material; alternatively, the inner surface of the valve seat is coated with a corrosion-resistant layer. Therefore, the valve element 22 and the valve seat 21 are not corroded by the contact with the liquid in the liquid flow channel 131, and the service life of the valve body device 20 can be effectively prolonged.

EXAMPLE III

The present embodiment is based on the first embodiment, and provides a different embodiment from the second embodiment. FIG. 3 is a cross-sectional view of a centrifugal spray head according to another embodiment of the present invention. As shown in fig. 3, the liquid flow channel 131 in the centrifugal nozzle provided by this embodiment may be formed at least partially by a flexible tube, the valve seat 21 is fixed relative to the flexible tube, and the valve core 22 is located outside the flexible tube and is used for abutting against the flexible tube. It is understood that the cavity 13 forming the liquid flow channel 131 may be a hose entirely or partially, and specifically, the hose may be a silicone tube or a rubber tube, which is not limited in this embodiment.

The control device 30 can be used to control the movement of the valve core 22 relative to the valve seat 21 to squeeze or release the flexible tube, thereby regulating the flow of liquid from the liquid flow channel 131; when the valve core 22 moves towards the direction of the hose (moves leftwards as shown in fig. 3), the abutting force is applied to the hose, so that the hose is squeezed and then shrinks along the radial direction, the sectional area of the liquid flow channel 131 is reduced, and the liquid flow in the liquid flow channel 131 is reduced, and when the valve core 22 moves away from the direction of the hose (moves rightwards as shown in fig. 3), the abutting force applied to the hose is gradually withdrawn, so that the hose is loosened along the radial direction, and the sectional area of the liquid flow channel 131 is increased until the original sectional area is restored. Wherein, the moving direction of the valve core 22 is crossed with the axial direction of the hose, so that when the valve core 22 moves, force can be applied to the hose to press or loosen the hose.

It should be noted that, in the present embodiment, there may be one or at least two valve body devices 20.

When the valve body device 20 is one, the inner side wall 212 of one side of the valve seat 21 contacts with the first outer side wall p1 of the hose, and one end of the valve core 22 is used for abutting against the second outer side wall p2 of the hose, wherein the first outer side wall p1 and the second outer side wall p2 can be oppositely arranged. During the process of squeezing the hose, the valve core 22 abuts against the second outer side wall p2, so that the second outer side wall p2 is close to the first outer side wall p1, and the cross-sectional area of the liquid flow channel 131 is reduced; when the hose is loosened, the spool 22 moves in a direction away from the second outer side wall p2 to loosen the hose, so that the sectional area of the flow channel 131 is increased.

When the valve body devices 20 are two, the valve seats of the two valve body devices 20 are communicated, the valve cores 22 of the two valve body devices 20 are respectively positioned at the opposite sides of the hose, and when the hose is extruded, the two valve cores 22 are relatively close to clamp the hose, so that the sectional area of the liquid flow channel 131 is reduced. When the hose is loosened, the two spools 22 are moved away from each other to loosen the hose, so that the sectional area of the flow channel 131 is increased.

Preferably, the direction of movement of the spool 22 may be substantially perpendicular to the axial direction of the hose. This enables the valve body 22 to apply a force to the hose more effectively, and the flow rate of the liquid in the liquid flow path 131 to be controlled more efficiently, and the structure of the valve body can be designed more simply.

It should be noted that, in this embodiment, because the valve core 22 and the valve seat 21 are both located outside the hose, and the valve core 22 and the valve seat 21 do not contact with the liquid in the liquid flow channel 131, the corrosion phenomenon does not occur, and therefore, the valve core 22 and the valve seat 21 do not need to be made of corrosion-resistant materials, and any common materials are adopted, so that the limitation on the materials is less, and the cost is lower.

Example four

In this embodiment, based on any one of the first to third embodiments, further, the valve body device 20 may be a solenoid valve, the solenoid valve includes a valve seat 21, a valve core 22, an elastic member 23 and an electromagnet 24, the elastic member 23 is connected between the valve core 22 and the electromagnet 24, and the electromagnet 24 is electrically connected to the control device 30. It should be noted that, when the valve body device 10 is an electromagnetic valve, the valve core 22 may be made of corrosion-resistant magnetic material, such as ferromagnetic material, iron cobalt nickel, etc. When the electromagnet 24 is powered on, a magnetic force is generated, the valve core 22 can be attracted by the electromagnet 24 to move towards the electromagnet 24, namely move away from the liquid flow channel 131, the liquid flow channel 131 is opened, and the liquid flows through the liquid flow channel 131 to be sprayed out of the liquid outlet 12, so that spraying is finally realized.

In this embodiment, the elastic member 23 may be an axial spring or a rubber member. When the electromagnet 24 is powered, the valve core 22 moves towards the electromagnet 24 under the attraction of the magnetic force of the electromagnet 24, and overcomes the elastic force of the elastic member 23 during the movement. When the electromagnet 24 is powered off, the magnetic force of the electromagnet 24 disappears, the valve core 22 is in a free state, the elastic part 23 restores deformation to push the valve core 22 to move towards the liquid flow channel 131, and the initial length of the elastic part 23 can be set, so that when the elastic part 23 restores deformation, the valve core 22 can completely block the liquid flow channel 131, and the purpose of preventing dripping is achieved.

It should be noted that, when the present embodiment is based on the second embodiment, the elastic member 23 will contact with the liquid in the liquid flow channel 131, and the corrosion phenomenon is very easy to occur, therefore, the material of the elastic member 23 may be a corrosion-resistant material; for example, stainless steel or aluminum alloy, or the elastic member 23 is a rubber member having corrosion resistance. Alternatively, the outer surface of the elastic member 23 is covered with a corrosion-resistant layer. The purpose of corrosion resistance can be achieved by the above modes.

However, when the present embodiment is based on the third embodiment, since the elastic member 23 is located outside the hose, the elastic member 23 does not contact with the liquid in the liquid flow channel 131, and therefore, corrosion does not occur, and in this case, the material of the elastic member 23 may not be limited, and the cost is low.

EXAMPLE five

In this embodiment, on the basis of any one of the first to fourth embodiments, further, as shown in fig. 2 or fig. 3, the driving device 30 may include a hollow connecting shaft 31; the liquid ejection device 10 is provided with a water pump connection pipe 13a for connecting to the water pump 100. The water pump connection pipe 13a communicates with the hollow connection shaft 31 to form a liquid flow channel 131.

In addition to the second embodiment, as shown in fig. 2, the valve body device 20 may be disposed between the water pump connecting pipe 13a and the hollow connecting shaft 31, the inlet a of the valve seat 21 may communicate with the water pump connecting pipe 13a, and the outlet b of the valve seat 21 may communicate with the hollow connecting shaft 31. The valve body device 20 may be connected to the water pump connecting pipe 13a and the hollow connecting shaft 31 by a quick release joint, or may be directly and sealingly clamped together.

On the basis of the third embodiment, as shown in fig. 3, the valve seat 21 of the valve body device 20 may be directly fixed on the water pump connecting pipe 13a, at this time, the water pump connecting pipe 13a may be a hose, the valve core 22 may directly abut against the water pump connecting pipe 13a to realize the liquid flow adjustment of the liquid flow channel 131, and the water pump connecting pipe 13a is a hose, which may also facilitate the layout of the water pump connecting pipe 13 a.

Of course, in other embodiment modes, the water pump connecting pipe 13a may be a hard pipe, and may be specifically designed according to actual requirements, and this embodiment is not limited.

EXAMPLE six

In this embodiment, on the basis of the fifth embodiment, as shown in fig. 2 or fig. 3, the driving device 30 may further include a stator seat 32 and a rotor cover 33. The stator seat 32, the hollow connecting shaft 31 and the liquid spraying device 10 are fixedly connected, and the rotor cover 33 is fixedly connected with the spraying disc 102. The rotor cover 33 can be sleeved outside the hollow connecting shaft 31, when the driving device 30 is powered on, the hollow connecting shaft 31 and the stator seat 32 are kept stationary as a stator, the rotor cover 33 rotates at a high speed relative to the hollow connecting shaft 31, and then the spray disk 102 is driven to rotate at a high speed, and the liquid in the spray disk 102 generates a larger centrifugal force and is sprayed out in a mist shape in a larger area.

Wherein the material of the stator seat 32 may include at least one of aluminum alloy, stainless steel, and carbon fiber. The material of the hollow connecting shaft 31 may also include at least one of: aluminum alloy, stainless steel, carbon fiber. The aluminum alloy, the stainless steel, the carbon fiber and other materials have the characteristics of corrosion resistance, good strength and difficult damage.

The rotor cover 33 is detachably connected to the nozzle plate 102. Specifically, the connection mode of the rotor cover and the spray disk may include at least one of the following: clamping, screw connection and key connection. In a preferred embodiment, as shown in fig. 1, the rotor cover 33 and the spray disk 102 may be circumferentially fixed, and specifically, a protrusion 331 may be disposed on a sidewall of the rotor cover 33, and a groove 1024 engaged with the protrusion 331 may be disposed on a sidewall of an inner hole of the spray disk 102, thereby achieving the purpose of circumferentially fixing the rotor cover 33 and the spray disk 102. Of course, the protrusion 331 may be disposed on the nozzle plate 102, and the groove 1021 may be disposed on the rotor cover 33, as long as the circumferential fixation of the two can be achieved. In addition, the spray disk 102 and the rotor cover 33 may also be in interference fit, so that the spray disk 102 can be firmly fixed on the rotor cover 33. In other embodiments, the spray disk 102 may be removably coupled to the rotor cover 33 by fasteners, such as screws. Alternatively, the spray disk 102 may be keyed to the rotor cover 33 and fastened thereto by other fasteners. The connection between the nozzle plate 102 and the rotor cover 33 may be various, or may be any connection in combination, as long as the nozzle plate 102 and the rotor cover 33 can be fixed.

Further, as shown in fig. 2 or 3, the rotor cover 33 and the hollow connecting shaft 31 may be connected by a bearing 34, and the rotor cover 33 is rotatable with respect to the hollow connecting shaft 31. The rotor cover 33 can be rotated with respect to the hollow connecting shaft 31 by the bearing 34, and the rotation force is not imparted to the hollow connecting shaft 31, and the stability of the hollow connecting shaft 31 can be effectively maintained. The rotor cover 33 is detachably connected with the bearing 34, for example, the rotor cover 33 is screwed with the bearing 34 by a fastener, or the rotor cover 33 is detachably connected with the bearing 34 by a snap, when the spray plate 102 needs to be detached, the rotor cover 33 can be detached from the bearing 34 together with the spray plate 102.

The spray trays 102 can include a variety of types, and the spray device 10 can be selectively connected to one of the spray trays 102 for spraying, which is highly versatile.

Further, as shown in fig. 2 or 3, a sealing member 70 may be provided below the bearing 34 and between the rotor cover 33 and the hollow connecting shaft 31, the sealing member 70 serving to prevent the liquid from flowing back into the bearing 34. The sealing element 70 may be specifically a skeleton seal, and includes a rigid supporting body and an elastic sealing body, the rigid supporting body provides a supporting force, and the elastic sealing body is used for sealing a connection gap, so that while the structural strength is ensured, a better seal is realized, and the sealing element 70 prevents liquid from flowing back to the bearing 34, so that the bearing 34 can be effectively protected, and the bearing 34 is prevented from being damaged.

EXAMPLE seven

The embodiment provides a spraying system, which comprises a water pump and a centrifugal spray head communicated with the water pump; as shown in fig. 1 to 2, the centrifugal nozzle includes: liquid ejecting apparatus 10, valve body apparatus 20, control apparatus 30, and driving apparatus 40. Multiple centrifugal spray heads may be in communication with the same water pump.

The liquid spraying device 10 comprises a liquid inlet 11 and a liquid outlet 12, and a liquid flow channel 131 communicating between the liquid inlet 11 and the liquid outlet 12, wherein the liquid flow channel 131 may be formed by a pipe or a cavity 13 in the liquid spraying device 10, and in this embodiment, preferably, the liquid flow channel 131 is formed by the cavity 13. The inlet port 11 may be adapted to communicate with a water pump 100 of a sprinkler system and the outlet port 12 may be adapted to communicate with a spray pan or nozzle. The water pump 100 may be in communication with a water reservoir, and the water pump 100 pumps liquid in the water reservoir toward the liquid inlet 11 of the liquid spraying device 10, then through the liquid flow channel 131 to the liquid outlet 12 and out through a spray plate or nozzle.

It should be noted that, the valve element 22 moves in the valve seat 21 to adjust the liquid flow rate of the liquid flow channel 131, and specifically, during the movement of the valve element 22, the valve element directly or indirectly occupies the cross-sectional position of the liquid flow channel 131, so as to adjust the liquid flow rate of the liquid flow channel 131. When the spool 22 occupies the full cross-sectional position of the flow channel 131, the flow channel 131 is blocked and liquid cannot be discharged through the flow channel 131; when the spool 22 occupies a partial sectional position of the flow channel 131, the flow channel 131 is partially blocked, and the flow rate of the liquid passing through the flow channel 131 per unit time is reduced; when the spool 22 is completely withdrawn from the cross-sectional position of the flow channel 131, the flow rate of the liquid in the flow channel 131 is maximized.

The control device 30 is electrically connected to the valve body device 20 for controlling the movement of the valve element 22 relative to the valve seat 21. The driving device 40 is connected to the liquid ejecting apparatus 10, and the driving device 30 can drive the liquid ejecting apparatus 10 to discharge the liquid. Specifically, the liquid may refer to a drug solution, water, or other liquid. The driving device 30 can drive the liquid in the liquid spraying device 10 to generate a larger centrifugal force to be thrown out all around, taking the liquid medicine as an example, the liquid medicine can be dispersed into liquid drops with a smaller volume under the action of the centrifugal force, so that the contact area of the liquid medicine and crops is enlarged, the liquid medicine has a larger diffusion range, and a better liquid medicine spraying effect is realized.

Specifically, when the driving device 30 is powered on, the driving device 30 can drive the liquid ejection device 10 to discharge the liquid. When the driving device 30 is de-energized, the driving device 30 no longer drives the liquid ejection device 10 to eject the liquid. In other embodiments, the driving device 30 may be capable of driving the liquid ejecting apparatus 10 to eject liquid when the driving device 30 receives a high level signal, and the driving device 30 may not drive the liquid ejecting apparatus 10 to eject liquid when the driving device 30 receives a low level signal.

The driving device 30 can stop driving the liquid spraying device 10 to discharge the liquid after receiving the spray stopping command, and at this time, the control device 30 can synchronously control the valve core 22 to move to block the liquid flow channel 131, that is, when stopping spraying, the control device can immediately block the liquid flow channel 131 through the valve body device 20, thereby playing a role of preventing dripping leakage, wherein the spray stopping command can be triggered by a user or preset by a spraying system.

The spraying system provided by the embodiment comprises a centrifugal sprayer, wherein the centrifugal sprayer comprises a liquid spraying device, the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated with the liquid inlet and the liquid outlet, a liquid flow channel is formed in the cavity, a valve body device is connected to the cavity, the valve body device comprises a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow of the liquid flow channel, a control device controls the valve core to move relative to the valve seat, a driving device is connected with the liquid spraying device, and the driving device can drive the liquid spraying device to discharge the; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, can be through the liquid flow of valve body device control centrifugal nozzle, and because the state switching of valve body device is quick, switch fast to the full-cut-off state by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment.

Example eight

This embodiment is based on the seventh embodiment, and further, as shown in fig. 1 and 2, the liquid ejection apparatus 10 may include a head main body 101, and the valve body apparatus 20 and the liquid flow channel 131 are provided in the head main body 101. The nozzle body 101 may include an outer housing 1011, the outer housing 1011 enclosing a cavity 1012, and the valve body assembly 20 and the fluid flow passageway 131 may be disposed within the cavity 1012. The driving device 30 may be specifically configured to provide a rotational force to generate a large centrifugal force to the liquid in the liquid flow channel 131, so as to atomize and spray the liquid droplets.

Further, the spray pan 102 may include an upper spray pan 1021 and a lower spray pan 1022, with the spray passages 1023 formed between the upper spray pan 1021 and the lower spray pan 1022. In addition, an electric adjusting plate 50 may be fixed in the cavity 1012, the electric adjusting plate 50 may be hermetically disposed in the liquid spraying device 10, and may be specifically disposed in the cavity 1012, the electric adjusting plate 50 is electrically connected to the driving device 30 for adjusting the rotation speed of the driving device 30, and when the driving device 30 is a motor, the electric adjusting plate 50 is specifically used for adjusting the speed of the motor. As shown in fig. 2, the valve seat 21 may have a valve seat passage 211 therein, the valve seat passage 211 being capable of communicating with the flow passage 131, the valve seat passage 211 being capable of accommodating the spool 22. The control device 30 may be used to control the movement of the spool 22 relative to the valve seat 21 to control the opening degree of the valve body device 10, thereby regulating the flow rate of the liquid from the liquid flow channel 131, wherein the movement direction of the spool 22 intersects with the extension direction of the liquid flow channel 131.

The structure and function of the centrifugal nozzle in this embodiment are the same as those in the embodiment, and specific reference may be made to the description of the embodiment two, which is not repeated herein.

Example nine

The present embodiment is based on the seventh embodiment, and provides an embodiment mode different from the eighth embodiment on the basis of the seventh embodiment. FIG. 3 is a cross-sectional view of a centrifugal spray head according to another embodiment of the present invention. As shown in fig. 3, the liquid flow channel 131 in the centrifugal nozzle provided by this embodiment may be formed at least partially by a flexible tube, the valve seat 21 is fixed relative to the flexible tube, and the valve core 22 is located outside the flexible tube and is used for abutting against the flexible tube. The control device 30 can be used to control the movement of the valve core 22 relative to the valve seat 21 to squeeze or release the flexible tube, thereby regulating the flow of liquid from the liquid flow channel 131; when the valve core 22 moves towards the direction of the hose (moves leftwards as shown in fig. 3), the abutting force is applied to the hose, so that the hose is squeezed and then shrinks along the radial direction, the sectional area of the liquid flow channel 131 is reduced, and the liquid flow in the liquid flow channel 131 is reduced, and when the valve core 22 moves away from the direction of the hose (moves rightwards as shown in fig. 3), the abutting force applied to the hose is gradually withdrawn, so that the hose is loosened along the radial direction, and the sectional area of the liquid flow channel 131 is increased until the original sectional area is restored. Wherein, the moving direction of the valve core 22 is crossed with the axial direction of the hose, so that when the valve core 22 moves, force can be applied to the hose to press or loosen the hose.

The structure and function of the centrifugal nozzle in this embodiment are the same as those in the third embodiment, and specific reference may be made to the description of the third embodiment, which is not repeated herein.

Example ten

This embodiment is based on any one of the seventh to ninth embodiments, and further, the valve body device 20 may be a solenoid valve, the solenoid valve includes a valve seat 21, a valve core 22, an elastic member 23 and an electromagnet 24, the elastic member 23 is connected between the valve core 22 and the electromagnet 24, and the electromagnet 24 is electrically connected to the control device 30. In this embodiment, the elastic member 23 may be an axial spring or a rubber member.

The structure and function of the centrifugal nozzle in this embodiment are the same as those in the fourth embodiment, and specific reference may be made to the description of the fourth embodiment, which is not repeated herein.

EXAMPLE eleven

In this embodiment, on the basis of any one of the seventh to tenth embodiments, further, as shown in fig. 2 or 3, the driving device 30 may include a hollow connecting shaft 31; the liquid ejection device 10 is provided with a water pump connection pipe 13a for connecting to the water pump 100. The water pump connection pipe 13a communicates with the hollow connection shaft 31 to form a liquid flow channel 131.

The structure and function of the centrifugal nozzle in this embodiment are the same as those in the fifth embodiment, and specific reference may be made to the description of the fifth embodiment, which is not repeated herein.

Example twelve

In this embodiment, on the basis of the eleventh embodiment, as shown in fig. 2 or fig. 3, the driving device 30 may further include a stator seat 32 and a rotor cover 33. The stator seat 32, the hollow connecting shaft 31 and the liquid spraying device 10 are fixedly connected, and the rotor cover 33 is fixedly connected with the spraying disc 102. The rotor cover 33 can be sleeved outside the hollow connecting shaft 31, when the driving device 30 is powered on, the hollow connecting shaft 31 and the stator seat 32 are kept stationary as a stator, the rotor cover 33 rotates at a high speed relative to the hollow connecting shaft 31, and then the spray disk 102 is driven to rotate at a high speed, and the liquid in the spray disk 102 generates a larger centrifugal force and is sprayed out in a mist shape in a larger area.

The rotor cover 33 is detachably connected to the nozzle plate 102. Specifically, the connection mode of the rotor cover and the spray disk may include at least one of the following: clamping, screw connection and key connection. Further, as shown in fig. 2 or 3, the rotor cover 33 and the hollow connecting shaft 31 may be connected by a bearing 34, and the rotor cover 33 is rotatable with respect to the hollow connecting shaft 31. Further, as shown in fig. 2 or 3, a sealing member 70 may be provided below the bearing 34 and between the rotor cover 33 and the hollow connecting shaft 31, the sealing member 70 serving to prevent the liquid from flowing back into the bearing 34. The sealing element 70 may be specifically a skeleton seal, and includes a rigid supporting body and an elastic sealing body, the rigid supporting body provides a supporting force, and the elastic sealing body is used for sealing a connection gap, so that while the structural strength is ensured, a better seal is realized, and the sealing element 70 prevents liquid from flowing back to the bearing 34, so that the bearing 34 can be effectively protected, and the bearing 34 is prevented from being damaged.

The structure and function of the centrifugal nozzle in this embodiment are the same as those in the sixth embodiment, and specific reference may be made to the description of the sixth embodiment, which is not described herein again.

EXAMPLE thirteen

This embodiment provides a movable platform, and the structural diagram of fig. 5 explains for example movable platform is agricultural plant protection unmanned aerial vehicle. As shown in fig. 5, the agricultural plant protection unmanned aerial vehicle comprises a frame 2000, and at least one spraying system 1000 arranged on the frame; the sprinkler system 1000 includes: water pump 100, water tank 200, and centrifugal spray head 300; water pump 100 is in communication with water tank 200 and spinner 300, respectively. Multiple centrifugal spray heads 300 may be in communication with the same water pump 100.

As shown in fig. 1 to 2, the centrifugal nozzle includes: liquid ejecting apparatus 10, valve body apparatus 20, control apparatus 30, and driving apparatus 40. Multiple centrifugal spray heads may be in communication with the same water pump.

The movable platform provided by this embodiment may be an agricultural plant protection unmanned aerial vehicle, and includes a centrifugal nozzle, where the centrifugal nozzle includes a liquid spraying device, where the liquid spraying device includes a liquid inlet, a liquid outlet, and a cavity communicating the liquid inlet and the liquid outlet, the cavity forms a liquid flow channel, the valve body device is connected to the cavity, the valve body device includes a valve seat and a valve core, the valve core can move relative to the valve seat to adjust the liquid flow rate of the liquid flow channel, the control device controls the valve core to move relative to the valve seat, the driving device is connected to the liquid spraying device, and the driving device can drive the liquid spraying device to discharge; when the driving device does not drive the liquid spraying device to discharge liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge liquid any more. Through set up the valve body device in centrifugal nozzle, can be through the liquid flow of valve body device control centrifugal nozzle, and because the state switching of valve body device is quick, switch fast to the full-cut-off state by opening wide, can stop spouting the back at the shower nozzle, plug up liquid flow channel rapidly through the case to effectively prevent the emergence of weeping phenomenon, effectively save unnecessary liquid medicine extravagant, and can not make the liquid medicine weeping in the non-environment of spraying, can effectively protect the environment. And the agricultural plant protection unmanned aerial vehicle can be generally provided with a plurality of centrifugal nozzles, the number of the centrifugal nozzles in the prior art must be matched with the number of the water pumps, the centrifugal nozzles in the invention can control a plurality of centrifugal nozzles by only using one water pump, and the flow control among all the nozzles is still independent.

Example fourteen

This embodiment is based on the thirteenth embodiment, and further, as shown in fig. 1 and 2, the liquid ejection apparatus 10 may include a head main body 101, and the valve body apparatus 20 and the liquid flow path 131 are provided in the head main body 101. The nozzle body 101 may include an outer housing 1011, the outer housing 1011 enclosing a cavity 1012, and the valve body assembly 20 and the fluid flow passageway 131 may be disposed within the cavity 1012. The driving device 30 may be specifically configured to provide a rotational force to generate a large centrifugal force to the liquid in the liquid flow channel 131, so as to atomize and spray the liquid droplets.

Further, the spray pan 102 may include an upper spray pan 1021 and a lower spray pan 1022, with the upper spray pan 1021 and the lower spray pan 1022 defining a spray path therebetween. In addition, an electric adjusting plate 50 may be fixed in the cavity 1012, the electric adjusting plate 50 may be hermetically disposed in the liquid spraying device 10, and may be specifically disposed in the cavity 1012, the electric adjusting plate 50 is electrically connected to the driving device 30 for adjusting the rotation speed of the driving device 30, and when the driving device 30 is a motor, the electric adjusting plate 50 is specifically used for adjusting the speed of the motor. As shown in fig. 2, the valve seat 21 may have a valve seat passage 211 therein, the valve seat passage 211 being capable of communicating with the flow passage 131, the valve seat passage 211 being capable of accommodating the spool 22. The control device 30 may be used to control the movement of the spool 22 relative to the valve seat 21 to control the opening degree of the valve body device 10, thereby regulating the flow rate of the liquid from the liquid flow channel 131, wherein the movement direction of the spool 22 intersects with the extension direction of the liquid flow channel 131.

Example fifteen

The present embodiment is based on the thirteenth embodiment, and provides an embodiment mode different from the fourteenth embodiment on the basis of the thirteenth embodiment. As shown in fig. 3, the liquid flow channel 131 in the centrifugal nozzle provided by this embodiment may be formed at least partially by a flexible tube, the valve seat 21 is fixed relative to the flexible tube, and the valve core 22 is located outside the flexible tube and is used for abutting against the flexible tube. The control device 30 can be used to control the movement of the valve core 22 relative to the valve seat 21 to squeeze or release the flexible tube, thereby regulating the flow of liquid from the liquid flow channel 131; when the valve core 22 moves towards the direction of the hose (moves leftwards as shown in fig. 3), the abutting force is applied to the hose, so that the hose is squeezed and then shrinks along the radial direction, the sectional area of the liquid flow channel 131 is reduced, and the liquid flow in the liquid flow channel 131 is reduced, and when the valve core 22 moves away from the direction of the hose (moves rightwards as shown in fig. 3), the abutting force applied to the hose is gradually withdrawn, so that the hose is loosened along the radial direction, and the sectional area of the liquid flow channel 131 is increased until the original sectional area is restored. Wherein, the moving direction of the valve core 22 is crossed with the axial direction of the hose, so that when the valve core 22 moves, force can be applied to the hose to press or loosen the hose.

Example sixteen

This embodiment is based on any one of the thirteenth to the fifteenth embodiments, and further, the valve body device 20 may be a solenoid valve, the solenoid valve includes a valve seat 21, a valve core 22, an elastic member 23 and an electromagnet 24, the elastic member 23 is connected between the valve core 22 and the electromagnet 24, and the electromagnet 24 is electrically connected to the control device 30. In this embodiment, the elastic member 23 may be an axial spring or a rubber member.

Example seventeen

In this embodiment, on the basis of any one of the thirteenth to sixteenth embodiments, further, as shown in fig. 2 or 3, the driving device 30 may include a hollow connecting shaft 31; the liquid ejection device 10 is provided with a water pump connection pipe 13a for connecting to the water pump 100. The water pump connection pipe 13a communicates with the hollow connection shaft 31 to form a liquid flow channel 131.

EXAMPLE eighteen

In this embodiment, on the basis of the seventeenth embodiment, as shown in fig. 2 or fig. 3, the driving device 30 may further include a stator seat 32 and a rotor cover 33. The stator seat 32, the hollow connecting shaft 31 and the liquid spraying device 10 are fixedly connected, and the rotor cover 33 is fixedly connected with the spraying disc 102. The rotor cover 33 can be sleeved outside the hollow connecting shaft 31, when the driving device 30 is powered on, the hollow connecting shaft 31 and the stator seat 32 are kept stationary as a stator, the rotor cover 33 rotates at a high speed relative to the hollow connecting shaft 31, and then the spray disk 102 is driven to rotate at a high speed, and the liquid in the spray disk 102 generates a larger centrifugal force and is sprayed out in a mist shape in a larger area.

The rotor cover 33 is detachably connected to the nozzle plate 102. Specifically, the connection mode of the rotor cover and the spray disk may include at least one of the following: clamping, screw connection and key connection. Further, as shown in fig. 2 or 3, the rotor cover 33 and the hollow connecting shaft 31 may be connected by a bearing 34, and the rotor cover 33 is rotatable with respect to the hollow connecting shaft 31. Further, as shown in fig. 2 or 3, a sealing member 70 may be provided below the bearing 34 and between the rotor cover 33 and the hollow connecting shaft 31, the sealing member 70 serving to prevent the liquid from flowing back into the bearing 34. The sealing element 70 can be specifically a skeleton seal, and comprises a rigid supporting body and an elastic sealing body, wherein the rigid supporting body provides supporting force, and the elastic sealing body is used for sealing a connection gap, so that the structural strength is ensured, better sealing is realized, liquid is prevented from flowing back to the bearing 34 through the sealing element 70, the bearing 34 can be effectively protected, and the bearing 34 is prevented from being damaged.

In the embodiments of the present invention, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

A centrifugal spray head, comprising:

the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated between the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel;

the valve body device is connected to the cavity; the valve body device comprises a valve seat and a valve core, and the valve core is movably arranged on the valve seat and is used for moving relative to the valve seat to adjust the liquid flow of the liquid flow channel;

the control device is electrically connected with the valve body device and is used for controlling the valve core to move relative to the valve seat; and the number of the first and second groups,

the driving device is connected with the liquid spraying device and can drive the liquid spraying device to discharge the liquid;

when the driving device does not drive the liquid spraying device to discharge the liquid any more, the control device can control the valve core to block the liquid flow channel, so that the liquid outlet does not discharge the liquid any more.
The centrifugal spray head of claim 1,

when the driving device is powered on, the driving device can drive the liquid spraying device to discharge the liquid;

when the driving device is powered off, the driving device does not drive the liquid spraying device to discharge the liquid.
The centrifugal spray head of claim 1 wherein said liquid spray means comprises a spray head body, said valve body means and said liquid flow passages being provided in said spray head body.
The centrifugal spray head according to claim 3, wherein the liquid spraying device further comprises:

the spraying disc is internally provided with a spraying channel communicated with the liquid outlet;

the driving device is connected with the spray disk and used for driving the spray disk to rotate so as to discharge the liquid.
The centrifugal spray head of claim 1 wherein the valve seat has a valve seat passage therein, the valve seat passage being communicable with the fluid flow passage, the valve seat passage being configured to receive the valve element;

the control device is used for controlling the valve core to move relative to the valve seat so as to control the opening degree of the valve body device, thereby regulating the liquid flow rate from the liquid flow channel; wherein the movement direction of the valve core is crossed with the extension direction of the liquid flow channel.
The sprayhead of claim 5 wherein the spool moves in a direction substantially perpendicular to the direction of extension of the flow channel.
The centrifugal spray head of claim 1 wherein the flow passage is formed at least in part by a flexible tube, the valve seat being fixed relative to the flexible tube, the valve element being located outside the flexible tube and adapted to abut against the flexible tube;

the control device is used for controlling the valve core to move relative to the valve seat so as to press or loosen the flexible pipe, thereby regulating the liquid flow from the liquid flow channel; wherein the movement direction of the valve core is crossed with the axial direction of the hose.
The centrifugal spray head of claim 7, wherein the direction of movement of the valve core is substantially perpendicular to the axial direction of the hose.
The centrifugal spray head according to claim 1, wherein the valve core is made of a corrosion-resistant magnetic material; or the outer surface of the valve core is wrapped by the corrosion-resistant layer; and/or the presence of a catalyst in the reaction mixture,

the valve seat is made of a corrosion-resistant material; alternatively, the inner surface of the valve seat is coated with a corrosion resistant layer.
The showerhead of claim 1, wherein the valve body assembly is a solenoid valve including the valve seat, the valve core, and a resilient member and an electromagnet, the resilient member being connected between the valve core and the electromagnet, the electromagnet being electrically connected to the control device.
The showerhead of claim 10, wherein the resilient member is a corrosion resistant material; or the outer surface of the elastic piece is wrapped by the corrosion-resistant layer; and/or the control device regulates the liquid flow of the liquid flow channel by controlling the action frequency of the valve core.
The centrifugal spray head of claim 4 wherein the drive means comprises a hollow connecting shaft; a water pump connecting pipe used for being connected with a water pump is arranged in the liquid spraying device;

the water pump connecting pipe is communicated with the hollow connecting shaft to form the liquid flow channel.
The centrifugal spray head of claim 12, wherein the water pump connection tube is a hose or a hard tube.
The centrifugal spray head of claim 12, wherein the drive means further comprises a stator base and a rotor cover;

the stator seat, the hollow connecting shaft and the liquid spraying device are fixedly connected, and the rotor cover is fixedly connected with the spraying disc.
The centrifugal spray head of claim 1,

when the driving device drives the liquid spraying device to discharge the liquid, the valve core can move towards the valve seat.
The showerhead of claim 15,

when the driving device drives the liquid spraying device to discharge the liquid, the control device can control the valve core to move towards the valve seat.
The centrifugal spray head according to claim 1, further comprising an electric tuning plate hermetically disposed in the liquid spraying device and electrically connected to the driving device for adjusting a rotation speed of the driving device.
The centrifugal spray head of claim 17 wherein the drive means is a brushless dc motor and the trimming plate drives the motor by PWM wave modulation.
The centrifugal spray head of claim 14, wherein the material of the stator seat and/or the hollow connecting shaft comprises at least one of: aluminum alloy, stainless steel, carbon fiber.
The spray head of claim 14 wherein the rotor cover is removably attached to the spray disk.
The spray head of claim 20 wherein the rotor cover is coupled to the spray disk in a manner that includes at least one of: clamping, screw connection and key connection.
The centrifugal spray head of claim 14 wherein the rotor cover is coupled to the hollow coupling shaft by a bearing, the rotor cover being rotatable relative to the hollow coupling shaft.
The spray tip of claim 22, wherein the rotor cover is removably coupled to the bearing.
The spray head of claim 22 wherein a seal is provided below the bearing and between the rotor cover and the hollow connecting shaft for preventing backflow of liquid into the bearing.
The spray head of claim 4 wherein the spray disk comprises an upper spray disk and a lower spray disk, the upper spray disk and the lower spray disk forming the spray passages therebetween.
The spray head of claim 25 wherein the lower disk intermediate portion is recessed away from the upper disk to form an accumulation chamber, the accumulation chamber communicating with the spray passages.
A sprinkling system is characterized by comprising a water pump and a centrifugal sprayer communicated with the water pump;

wherein the centrifugal spray head comprises:

the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity which is connected and communicated between the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel;

the valve body device is connected to the cavity; the valve body device comprises a valve seat and a valve core, and the valve core is movably arranged on the valve seat and is used for moving relative to the valve seat to adjust the liquid flow of the liquid flow channel;

the control device is electrically connected with the valve body device and is used for controlling the valve core to move relative to the valve seat; and the number of the first and second groups,

the driving device is connected with the liquid spraying device and can drive the liquid spraying device to discharge the liquid;

when the driving device does not drive the liquid spraying device to discharge the liquid any more, the control device controls the valve core to block the liquid flow channel, so that the liquid outlet does not discharge the liquid any more.
The spraying system of claim 27,

when the driving device is powered on, the driving device can drive the liquid spraying device to discharge the liquid;

when the driving device is powered off, the driving device does not drive the liquid spraying device to discharge the liquid.
The spraying system of claim 27,

the liquid spraying device comprises a nozzle body, and the valve body device and the liquid flow channel are arranged on the nozzle body.
The spraying system of claim 29, wherein the liquid spraying apparatus further comprises: the spraying disc is internally provided with a spraying channel communicated with the liquid outlet; the driving device is connected with the spray disk and used for driving the spray disk to rotate so as to discharge the liquid.
The sprinkler system of claim 27, wherein the valve seat has a valve seat passage therein, the valve seat passage being communicable with the fluid flow passage, the valve seat passage being configured to receive the valve element;

the control device is used for controlling the valve core to move relative to the valve seat so as to control the opening degree of the valve body device, thereby regulating the liquid flow rate from the liquid flow channel; wherein the movement direction of the valve core is crossed with the extension direction of the liquid flow channel.
The spraying system of claim 31 wherein the direction of movement of said valve element is perpendicular to the direction of extension of said fluid flow passageway.
The spraying system of claim 27 wherein said fluid flow passage is at least partially defined by a flexible tube, said valve seat being fixed relative to said flexible tube, said valve element being located outside of said flexible tube and adapted to abut against said flexible tube;

the control device is used for controlling the valve core to move relative to the valve seat so as to press or loosen the flexible pipe, thereby regulating the liquid flow from the liquid flow channel; wherein the movement direction of the valve core is crossed with the axial direction of the hose.
The spraying system of claim 33 wherein the direction of movement of said cartridge is substantially perpendicular to the direction of the axis of said hose.
The spraying system of claim 27, wherein the material of the cartridge is a corrosion resistant magnetic material; or the outer surface of the valve core is wrapped by the corrosion-resistant layer;

and/or the valve seat is made of a corrosion-resistant material; alternatively, the inner surface of the valve seat is coated with a corrosion resistant layer.
The spraying system of claim 27 wherein said valve body means is a solenoid valve comprising said valve seat, said valve cartridge, and a resilient member and an electromagnet, said resilient member being connected between said valve cartridge and said electromagnet, said electromagnet being electrically connected to said control means.
The spraying system of claim 36, wherein said resilient member is a corrosion resistant material; or the outer surface of the elastic piece is wrapped by the corrosion-resistant layer; and/or the presence of a catalyst in the reaction mixture,

the control device adjusts the liquid flow rate of the liquid flow channel by controlling the action frequency of the valve core.
The spraying system of claim 30 wherein said drive means comprises a hollow connecting shaft; a water pump connecting pipe used for being connected with a water pump is arranged in the liquid spraying device;

the water pump connecting pipe is communicated with the hollow connecting shaft to form the liquid flow channel.
The spraying system of claim 38 wherein said water pump connection tube is a hose or a wand.
The spraying system of claim 38 wherein said drive means further comprises a stator base and a rotor cover;

the stator seat, the hollow connecting shaft and the liquid spraying device are fixedly connected, and the rotor cover is fixedly connected with the spraying disc.
The spraying system of claim 27, wherein the valve element is movable toward the valve seat when the drive mechanism drives the spray mechanism to discharge the liquid.
The spraying system of claim 41, wherein the control device is configured to control the valve element to move toward the valve seat when the drive device drives the spray device to discharge the liquid.
The spraying system of claim 27, further comprising an electrical tuning plate sealingly disposed in said liquid spraying apparatus and electrically connected to said drive apparatus for adjusting the rotational speed of said drive apparatus.
The spraying system of claim 43 wherein said drive means is a brushless DC motor and said trimming panel drives said motor by PWM wave modulation.
The spraying system of claim 40, wherein the material of the stator holder and/or the hollow connecting shaft comprises at least one of: aluminum alloy, stainless steel, carbon fiber.
The spraying system of claim 40 wherein said rotor cover is removably attached to said spray disk.
The spraying system of claim 46 wherein said rotor cover is coupled to said spray disk in a manner that includes at least one of: clamping, screw connection and key connection.
The spraying system of claim 40 wherein said rotor cover is coupled to said hollow coupling shaft by a bearing, said rotor cover being rotatable relative to said hollow coupling shaft.
The spraying system of claim 48 wherein said rotor cover is removably coupled to said bearing.
The spraying system of claim 48 wherein a seal is provided below said bearing and between said rotor cover and said hollow connecting shaft, said seal for preventing backflow of liquid into said bearing.
The spray system of claim 30, wherein said spray plate comprises an upper spray plate and a lower spray plate, said upper spray plate and said lower spray plate defining said spray channel therebetween.
The spray system of claim 51 wherein said lower spray tray is recessed at a middle portion thereof away from said upper spray tray to form a drip chamber, said drip chamber communicating with said spray channel.
The sprinkler system of claim 27, wherein a plurality of the spinner heads are in communication with the same water pump.
A movable platform is characterized by comprising a machine frame and at least one spraying system arranged on the machine frame;

wherein the spraying system comprises: a water pump, a water tank, and a centrifugal nozzle; the water pump is respectively communicated with the water tank and the centrifugal spray head;

the centrifugal spray head comprises:

the liquid spraying device comprises a liquid inlet, a liquid outlet and a cavity communicated between the liquid inlet and the liquid outlet, and the cavity forms a liquid flow channel;

the valve body device is connected to the cavity; the valve body device comprises a valve seat and a valve core, and the valve core is movably arranged on the valve seat and is used for moving relative to the valve seat to adjust the liquid flow of the liquid flow channel;

the control device is electrically connected with the valve body device and is used for controlling the valve core to move relative to the valve seat; and the number of the first and second groups,

the driving device is connected with the liquid spraying device and can drive the liquid spraying device to discharge the liquid;

when the driving device does not drive the liquid spraying device to discharge the liquid any more, the control device controls the valve core to block the liquid flow channel, so that the liquid outlet does not discharge the liquid any more.
The movable platform of claim 54,

when the driving device is powered on, the driving device can drive the liquid spraying device to discharge the liquid;

when the driving device is powered off, the driving device does not drive the liquid spraying device to discharge the liquid.
The movable platform of claim 54, wherein the liquid ejection device comprises a head body, and the valve body and the liquid flow channel are disposed in the head body.
The agricultural plant protection drone of claim 56, wherein the liquid spraying device further comprises:

the spraying disc is internally provided with a spraying channel communicated with the liquid outlet;

the driving device is connected with the spray disk and used for driving the spray disk to rotate.
The movable platform of claim 54 wherein the valve seat has a valve seat passage therein, the valve seat passage being communicable with the fluid flow passage, the valve seat passage being configured to receive the spool;

the control device is used for controlling the valve core to move relative to the valve seat so as to control the opening degree of the valve body device, thereby regulating the liquid flow rate from the liquid flow channel; wherein the movement direction of the valve core is crossed with the extension direction of the liquid flow channel.
The movable platform of claim 58 wherein the direction of motion of the spool is substantially perpendicular to the direction of extension of the flow channel.
The movable platform of claim 54 wherein the fluid flow channel is at least partially formed by a flexible tube, the valve seat being fixed relative to the flexible tube, the valve element being located outside the flexible tube and adapted to abut against the flexible tube;

the control device is used for controlling the valve core to move relative to the valve seat so as to press or loosen the flexible pipe, thereby regulating the liquid flow from the liquid flow channel; wherein the movement direction of the valve core is crossed with the axial direction of the hose.
The movable platform of claim 60 wherein the spool moves in a direction substantially perpendicular to the axis of the hose.
The movable platform of claim 54, wherein the material of the spool is a corrosion resistant magnetic material; or the outer surface of the valve core is wrapped by the corrosion-resistant layer;

and/or the valve seat is made of a corrosion-resistant material; alternatively, the inner surface of the valve seat is coated with a corrosion resistant layer.
The movable platform of claim 54, wherein the valve body device is a solenoid valve comprising the valve seat, the valve core, and an elastic member and an electromagnet, the elastic member is connected between the valve core and the electromagnet, and the electromagnet is electrically connected to the control device.
The movable platform of claim 63, wherein the resilient member is made of a corrosion resistant material; or the outer surface of the elastic piece is wrapped by the corrosion-resistant layer;

and/or the control device regulates the liquid flow of the liquid flow channel by controlling the action frequency of the valve core.
The movable platform of claim 57, wherein the drive means comprises a hollow connecting shaft; a water pump connecting pipe used for being connected with a water pump is arranged in the liquid spraying device;

the water pump connecting pipe is communicated with the hollow connecting shaft to form the liquid flow channel.
The movable platform of claim 65, wherein the water pump connection tube is a hose or a hard tube.
The movable platform of claim 65, wherein the drive further comprises a stator base and a rotor cover;

the stator seat, the hollow connecting shaft and the liquid spraying device are fixedly connected, and the rotor cover is fixedly connected with the spraying disc.
The movable platform of claim 54,

when the driving device drives the liquid spraying device to discharge the liquid, the valve core can move towards the valve seat.
The movable platform of claim 68,

when the driving device drives the liquid spraying device to discharge the liquid, the control device can control the valve core to move towards the valve seat.
The movable platform of claim 67, wherein the rotor cover is removably coupled to the bearing.
The movable platform of claim 65, further comprising an electrical tuning plate hermetically disposed in the liquid spraying device and electrically connected to the driving device for adjusting a rotation speed of the driving device.
The movable platform of claim 71, wherein the driving device is a brushless DC motor, and the electrical tuning board drives the motor by PWM wave modulation.
The movable platform of claim 70, wherein the material of the stator mount and/or the hollow connection shaft comprises at least one of: aluminum alloy, stainless steel, carbon fiber.
The movable platform of claim 70, wherein the rotor cover is removably coupled to the spray disk.
The movable platform of claim 74, wherein the rotor cover is coupled to the spray disk in a manner that includes at least one of: clamping, screw connection and key connection.
The movable platform of claim 70, wherein the rotor cover is coupled to the hollow coupling shaft via a bearing, the rotor cover being rotatable relative to the hollow coupling shaft.
The movable platform of claim 76, wherein a seal is provided below the bearing and between the rotor cover and the hollow connecting shaft, the seal for preventing backflow of liquid into the bearing.
The movable platform of claim 57, wherein the spray trays comprise an upper spray tray and a lower spray tray, the upper and lower spray trays forming the spray channel therebetween.
The movable platform of claim 78, wherein the middle portion of the lower spray tray is recessed away from the upper spray tray to form a drip chamber, the drip chamber being in communication with the spray channel.
The movable platform of claim 54, wherein a plurality of the centrifugal sprayers are in communication with the same water pump.