Remote control swing device for nozzle of air-assisted sprayer in hilly and mountainous orchard and spraying method

Abstract

The present invention relates to a remote control swing device for the nozzles of an air-assisted sprayer in hilly and mountainous orchards and a spraying method. The swing device includes a wind shield plate fixedly arranged on the air outlet side of the fan, a coupling located between the wind shield plate and the fan, and a motor for driving the coupling to rotate. The axial direction of the coupling is consistent with the air outlet direction of the fan. A swing link extending radially is fixedly arranged on the coupling, and a water distribution pipe communicating with a liquid pumping device is fixedly arranged on the swing link. A plurality of nozzles are installed on the side surface of the water distribution pipe. The axis of the nozzle is parallel to both the wind shield plate and the end face of the air outlet of the fan. The angles between the spraying directions of the nozzles on the same water distribution pipe and the horizontal plane increase in sequence. The present invention reduces the labor intensity of fruit farmers while greatly improving the utilization rate of pesticides, can solve problems such as uneven spraying, small spraying area, over-spraying and missed spraying, increases the deposition rate of droplets on the back of leaves at the same time, reduces the waste of pesticides, and improves work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of agriculture, and particularly to a remote control swing device for the nozzle of an air-assisted sprayer in hilly and mountainous orchards and a spraying method. Background Art

[0002] In China, the introduction of air-assisted orchard sprayers from abroad began at the end of the 20th century. When the air-assisted orchard sprayer is working, first, a piston pump generates hydraulic force to atomize the liquid medicine, and then, the wind force generated by a rotary fan is used for secondary atomization. The powerful air flow carries the dispersed droplets to the target position. The wind air flow generated by the fan can disturb the crop leaves to turn over, so that both the front and back sides of the leaves can be covered with the medicine.

[0003] With the improvement and development of air-assisted sprayers, the spraying efficiency has been greatly improved. Chinese scientific research workers have made outstanding contributions in aspects such as droplet deposition rate, droplet penetration rate, droplet anti-drift, and target orientation. However, most of the existing sprayer nozzles are fixed-standard-angle spraying, and the spraying angle of the nozzle cannot be automatically adjusted, resulting in difficulty in adapting to crops of different heights. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a remote control swing device for the nozzle of an air-assisted sprayer in hilly and mountainous orchards and a spraying method, which realizes the change of the spraying angle of the nozzle through the forward and reverse rotation of the motor to meet the requirements of spraying crops of different heights.

[0005] The present invention is realized by the following technical solutions. There is provided a remote control swing device for the nozzle of an air-assisted sprayer in hilly and mountainous orchards, including a wind shield fixed on the air outlet side of the fan, a coupling located between the wind shield and the fan, and a motor for driving the coupling to rotate. The axial direction of the coupling is consistent with the air outlet direction of the fan. A swing link extending radially is fixed on the coupling, and a water distribution pipe communicating with a liquid pumping device is fixed on the swing link. A plurality of nozzles are installed on the side of the water distribution pipe. The axes of the nozzles are parallel to both the wind shield and the end face of the air outlet of the fan. The spraying directions of the nozzles on the same water distribution pipe with respect to the horizontal plane increase in sequence.

[0006] When this solution is in use, the motor drives the coupling to rotate. When the coupling rotates, it drives the swing link to swing, thereby driving the water distribution pipe and the nozzles to rotate as a whole, realizing the change of the spraying angle of the nozzles. By setting the swing link, it is convenient to increase the distance between adjacent water distribution pipes, which is beneficial to increasing the spraying area. By setting the wind shield, on the one hand, it is convenient for the installation of the motor, and on the other hand, an exhaust channel is formed between the wind shield and the air outlet of the fan, so that the air flow discharged from the fan changes the flow direction and is discharged along the exhaust channel, improving the atomization effect; the spraying directions of the nozzles are different from each other, further increasing the spraying area and improving the spraying uniformity.

[0007] As an optimization, the motor is fixedly connected to the windshield plate and is located on the side of the windshield plate away from the fan. A through hole for the output shaft of the motor to pass through is provided on the windshield plate; the windshield plate and the flange at the air outlet end of the fan are fixedly connected by a support rod. This optimization scheme uses the windshield plate to separate the motor from the fan, preventing the airflow discharged by the fan from directly spraying the liquid ejected by the nozzle onto the motor, thus improving the use safety; the windshield plate and the fan flange are fixedly connected as a whole through the support rod, enhancing the integrity of the device.

[0008] As an optimization, the output shafts of the fan, the coupling, and the motor are coaxial. The water distribution pipe is a hollow bent pipe, and the center of the water distribution pipe is located on the axis of the coupling. This optimization scheme improves the stability during the spraying operation, facilitating the reduction of the overall shaking of the device; setting the water distribution pipe as a bent pipe enables the nozzles on the same water distribution pipe to be arranged in a staggered manner.

[0009] As an optimization, it further includes a control mechanism. The control mechanism includes a controller electrically connected to the motor through a relay. The controller controls the forward and reverse rotation of the motor by controlling the presence or absence of the electrical signal of the relay. This optimization scheme significantly improves the automation level of the device by setting the control mechanism and using the controller to control the rotation of the motor.

[0010] As an optimization, it further includes a remote control mechanism. The remote control mechanism includes a transmitter and a receiver adapted to the transmitter. The receiver circuit is connected in series to the input end of the controller. The transmitter remotely transmits a signal to control the on / off of the receiver, thereby controlling the signal at the input end of the controller. This optimization scheme enables remote control of the motor, making it more convenient to use.

[0011] This solution also provides a spraying method using the above-mentioned nozzle remote control swing device for a wind-sending type sprayer in hilly and mountainous orchards, including the following steps:

[0012] Import the designed intermittent forward and reverse rotation cycle program of the motor into the PLC. By controlling the on / off of the relay, the rotation of the motor is controlled, enabling the motor to rotate intermittently forward and backward;

[0013] During the forward and reverse rotation of the motor, the swing link is driven to swing reciprocally through the coupling, thereby driving the entire nozzle to rotate reciprocally around the axis of the coupling. During the rotation of the nozzle, the spraying angle changes;

[0014] When using the remote control mechanism, the receiver is connected in series with the input end of the PLC to form a loop. There is a start button and a stop button on the transmitter. The start button controls the connection of the input end of the PLC, and the stop button controls the disconnection of the input end of the PLC. The connection and disconnection of the input end of the PLC cause a change in the internal signal of the PLC, thereby controlling the start and stop of the intermittent forward and reverse rotation of the motor.

[0015] The beneficial effects of the present invention are as follows: By the forward and reverse rotation of the motor, the up and down swing of the nozzle is realized, thereby realizing the adjustable spray angle of the nozzle, increasing the spray area, improving the spray uniformity, increasing the droplet deposition rate on the back of the leaves, greatly improving the utilization rate of pesticides, reducing the waste of pesticides, and meeting the spray requirements of crops at different heights; By remotely controlling the rotation of the motor through a remote control, the labor intensity of fruit farmers is reduced, which is more conducive to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of the swing mechanism of the present invention;

[0019] Figure 3 is a schematic diagram of the structure of the control mechanism of the present invention;

[0020] Figure 4 is a schematic diagram of the structure of the remote control mechanism of the present invention;

[0021] As shown in the figure:

[0022] 1. Lithium battery, 2. Intermediate relay, 3. Controller, 4. Receiver, 5. Transmitter, 6. Water distribution pipe, 7. Swing link, 8. Coupling, 9. Motor, 10. Nozzle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0024] Such as Figure 1A remote control swing device for the nozzle of an air-assisted sprayer in hilly and mountainous orchards is shown, which includes a swing mechanism, a control mechanism, and a remote control mechanism. Each mechanism is scientifically and reasonably installed at the corresponding position of the air-assisted sprayer in the orchard according to its own structure and function. The remote control mechanism is responsible for remote control and controls the on-off situation of the PLC signal input. The control mechanism takes the PLC as the core controller and controls the forward and reverse rotation of the motor by designing an intermittent periodic forward and reverse rotation program for the motor. The rotation of the motor in the swing mechanism drives the rotation of the swing link, thereby driving the up-and-down swing of the nozzle for spraying.

[0025] Specifically, as Figure 2 shown, the swing mechanism includes a wind shield plate fixedly arranged on the air outlet side of the fan, a coupling 8 located between the wind shield plate and the fan, and a motor 9 for driving the rotation of the coupling. The wind shield plate is fixedly connected to the flange at the air outlet end of the fan through a support rod. The axial direction of the coupling is the same as the air outlet direction of the fan. The output shafts of the fan, the coupling, and the motor are coaxial. The motor is fixedly connected to the wind shield plate and is located on the side of the wind shield plate away from the fan. A through hole for the output shaft of the motor to pass through is provided on the wind shield plate. A swing link 7 extending radially is fixedly arranged on the coupling. A water distribution pipe 6 communicating with the liquid pumping device is fixedly arranged on the swing link. A plurality of nozzles 10 are installed on the side surface of the water distribution pipe. The axis of the nozzle is parallel to both the wind shield plate and the end surface of the air outlet of the fan. The spraying directions of the nozzles on the same water distribution pipe with respect to the horizontal plane increase in sequence. When the motor 9 rotates, it drives the swing link 7 to rotate, thereby driving the rotation of the nozzles on the hollow bent pipe.

[0026] In this embodiment, the water distribution pipe is a hollow bent pipe, and the center of the water distribution pipe is located on the axis of the coupling. Three nozzles are arranged on each water distribution pipe. Each water distribution pipe is fixedly connected to the coupling through two swing links. The two swing links connected to the same water distribution pipe are a group. The support rod is located between adjacent groups of swing links, which not only plays the role of connecting the wind shield plate and the fan flange, but also limits the maximum rotation angle of the water distribution pipe to prevent the spraying from deviating from the target crop due to excessive rotation angle. As an optimized solution, there are two water distribution pipes in this embodiment, and the nozzles on the two water distribution pipes are symmetric about the vertical plane where the support rod is located, simultaneously realizing spraying on the crops on both the left and right sides and improving the operation efficiency.

[0027] As Figure 3 shown, the control mechanism includes a controller 3 electrically connected to the motor through an intermediate relay 2. The controller controls the forward and reverse rotation of the motor by controlling the presence or absence of the electrical signal of the intermediate relay. The controller in this embodiment uses a PLC. First, a periodic program for the intermittent forward and reverse rotation of the motor is designed using PLC programming software and imported into the PLC. The forward and reverse rotation of the motor is controlled by controlling the presence or absence of the electrical signal of the intermediate relay. The Mitsubishi PLC and the intermediate relay in this control mechanism are both powered by a lithium battery 1.

[0028] AsFigure 4 As shown in the figure, the remote control mechanism includes a transmitter 5 and a receiver 4 adapted to the transmitter. The receiver circuit is connected in series to the input end of the controller. The transmitter remotely transmits a signal to control the on / off of the receiver, and further controls the signal at the input end of the controller. Specifically, the receiver is connected in series with the input end of the PLC to form a loop. There is a start button and a stop button on the transmitter 5. The start button controls the connection of the input end of the PLC, and the stop button controls the disconnection of the input end of the PLC. The connection and disconnection of the input end of the PLC cause a change in the internal signal of the PLC, and further control the start and stop of the intermittent forward and reverse rotation of the motor. The receiver 4 in this remote control mechanism is powered by a lithium battery 1.

[0029] A spraying method using the nozzle remote control swing device of the air-assisted sprayer for hilly and mountainous orchards in this embodiment includes the following steps:

[0030] Import the designed intermittent forward and reverse rotation cycle program of the motor into the PLC. By controlling the on / off of the intermediate relay, the rotation of the motor is further controlled to make the motor rotate intermittently forward and backward. During the forward and reverse rotation of the motor, the swing link is driven to swing reciprocally through the coupling, thereby driving the entire nozzle to rotate reciprocally around the axis of the coupling. During the rotation of the nozzle, the change of the water spraying angle is realized. When using the remote control mechanism, the receiver is connected in series with the input end of the PLC to form a loop. There is a start button and a stop button on the transmitter. The start button controls the connection of the input end of the PLC, and the stop button controls the disconnection of the input end of the PLC. The connection and disconnection of the input end of the PLC cause a change in the internal signal of the PLC, and further control the start and stop of the intermittent forward and reverse rotation of the motor.

[0031] The swing device and spraying method of this embodiment solve the problems of uneven spraying, small spraying area, overspraying and missed spraying existing in the prior art due to the fixed spraying angle. At the same time, it increases the deposition rate of droplets on the back of the leaves, reduces the waste of pesticides, and improves the operation efficiency.

[0032] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments. The devices and structures not described in detail should be understood to be implemented in a common manner in the art. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A remote control swing device for the nozzle of an air-assisted sprayer in hilly and mountainous orchards, characterized in that: It includes a wind shield plate fixedly arranged on the air outlet side of the fan, a coupling (8) located between the wind shield plate and the fan, and a motor (9) for driving the coupling to rotate. The axial direction of the coupling is consistent with the air outlet direction of the fan. A swing link (7) extending radially is fixedly arranged on the coupling. A water distribution pipe (6) communicating with the liquid pumping device is fixedly arranged on the swing link. The water distribution pipe is a hollow bent pipe, and a plurality of spray nozzles (10) are installed on the side surface of the water distribution pipe. The axis of the spray nozzle is parallel to both the wind shield and the end face of the air outlet of the fan. The spraying directions of the spray nozzles on the same water distribution pipe with respect to the horizontal plane increase in sequence. The motor is fixedly connected to the wind shield plate and is located on the side of the wind shield plate away from the fan. A through hole for the output shaft of the motor to pass through is provided on the wind shield plate. The flange at the air outlet end of the wind shield plate and the fan is fixedly connected through a support rod. An exhaust passage is formed between the wind shield plate and the air outlet of the fan, so that the airflow discharged from the fan changes its flow direction and is discharged along the exhaust passage. Two swing links connected to the same water distribution pipe form a group, and the support rod is located between adjacent groups of swing links, which not only plays the role of connecting the wind shield plate and the fan flange, but also limits the rotation angle of the water distribution pipe to a limit.

2. The remote control swing device for the nozzle of the air-blast sprayer in hilly and mountainous orchards according to claim 1, wherein: The output shafts of the fan, the coupling and the motor are coaxial, and the center of the water distribution pipe is located on the axis of the coupling.

3. The remote control swing device for the nozzle of the air-assisted sprayer in hilly and mountainous orchards according to claim 1, characterized in that: It further includes a control mechanism. The control mechanism includes a controller (3) electrically connected to the motor through an intermediate relay (2). The controller controls the forward and reverse rotation of the motor by controlling the presence or absence of the electrical signal of the intermediate relay.

4. The remote control swing device for the nozzle of the air-assisted sprayer in hilly and mountainous orchards according to claim 3, characterized in that: It further includes a remote control mechanism. The remote control mechanism includes a transmitter (5) and a receiver (4) adapted to the transmitter. The receiver circuit is connected in series to the input end of the controller. The transmitter remotely transmits a signal to control the on-off of the receiver, and thus controls the signal at the input end of the controller.

5. A spraying method using the remote control swing device of the nozzle of the air-blast sprayer for hilly and mountainous orchards according to any one of claims 1 to 4, characterized in that, It includes the following steps: Import the designed intermittent positive and reverse rotation cycle program of the motor into the PLC, and control the rotation of the motor by controlling the on-off of the intermediate relay, so that the motor rotates intermittently in the positive and reverse directions. During the forward and reverse rotation of the motor, the swing link is driven to swing reciprocally through the coupling, thereby driving the entire spray nozzle to rotate reciprocally around the axis of the coupling. During the rotation of the spray nozzle, the change of the spraying angle is realized. When using the remote control mechanism, the receiver is connected in series with the input end of the PLC to form a loop. There is a start button and a stop button on the transmitter. The start button controls the connection of the input end of the PLC, and the stop button controls the disconnection of the input end of the PLC. The connection and disconnection of the input end of the PLC cause a change in the internal signal of the PLC, and thus control the start and stop of the intermittent positive and reverse rotation of the motor.

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