Pesticide spraying device for agricultural greenhouse

Abstract

The utility model belongs to the technical field of facility agriculture, and particularly discloses a pesticide spraying device for an agricultural greenhouse, which comprises a vehicle body, a ground track, wheels on the lower side of the vehicle body, a pesticide spraying mechanism and a sliding rod on the top of the vehicle body, a horizontal plate sliding on the sliding rod, the pesticide spraying mechanism fixed at the upper end of the horizontal plate, a threaded block connected with the horizontal plate, and an adjusting screw connected with the threaded block. A liquid medicine box, a liquid pump and a storage battery are fixedly connected into the vehicle body, the input end of the liquid pump is fixedly connected with a liquid inlet pipe, and the lower end of the liquid inlet pipe extends into the liquid medicine box. By arranging the horizontal plate, the sliding rod, the threaded block and the adjusting screw rod, the horizontal plate fixedly connected with the threaded block can be driven to move up and down by rotating the adjusting screw rod forwards or reversely, so that the height of the pesticide spraying mechanism fixedly connected to the horizontal plate is adjusted; the device can meet the pesticide spraying operation requirements of crops with different growth heights, and the problem that an existing pesticide spraying device cannot adapt to pesticide spraying operation with different heights is solved.

Description

Technical Field

[0001] This utility model belongs to the field of facility agriculture technology, specifically a spraying device for agricultural greenhouses. Background Technology

[0002] In agricultural greenhouse cultivation, pest and disease control is a crucial aspect of ensuring crop yield and quality. Traditional manual backpack sprayers suffer from low efficiency, high labor intensity, and uneven pesticide coverage, especially in high-density multi-span greenhouses where precise application is difficult. While track-mounted sprayers, which have emerged in recent years, can achieve automated movement via pre-set tracks, current technologies mostly employ top-suspended track structures. Their installation requires modifications to the greenhouse frame, leading to drawbacks such as reduced lighting and difficulties in periodic maintenance due to the need for climbing. Ground-based sprayers, on the other hand, do not have these drawbacks. However, existing ground-based sprayers generally suffer from fixed nozzle heights, limiting their applicability and making them unsuitable for continuously growing crops in greenhouses. Therefore, there is a need to design an agricultural greenhouse spraying device with adjustable nozzle height. Utility Model Content

[0003] To address the above technical problems, this utility model provides an agricultural greenhouse spraying device with an adjustable nozzle height, thus solving the problem that existing spraying devices with fixed nozzle heights cannot adapt to the continuous growth and increasing height of crops in greenhouses.

[0004] To solve the above technical problems, the technical solution of this utility model is as follows: an agricultural greenhouse spraying device, including a vehicle body and a ground track, with wheels rotatably connected to the underside of the vehicle body, the wheels moving along the ground track, a power mechanism fixedly connected inside the vehicle body, the wheels being driven by the power mechanism, a spraying mechanism and vertically arranged sliding rods fixedly connected to the top of the vehicle body, three sliding rods being provided, a horizontal plate slidably connected to the sliding rods, the spraying mechanism being fixedly connected to the upper end of the horizontal plate, a threaded block fixedly connected to the horizontal plate, and an adjusting screw threadedly connected to the threaded block. The screw and the slide rod are arranged parallel to each other. The upper end of the adjusting screw is fixedly connected to a rotating disk, and the smooth part at the lower end is rotatably connected to the top of the vehicle body. The vehicle body is fixedly connected to a liquid tank, a liquid pump, and a storage battery. The input end of the liquid pump is fixedly connected to an inlet pipe, and the output end is connected to the rotary joint of the spraying device through a pipe. The two sides of the spraying device are rotatably connected to the vehicle body through fixed rods. A flexible hose is wound around the spraying device, and the other end of the flexible hose is fixedly connected to the input end of the spraying mechanism. The lower end of the inlet pipe extends into the liquid tank. The storage battery is electrically connected to the power mechanism and the liquid pump respectively.

[0005] Furthermore, the ground track is laid horizontally on the ground, and two ground tracks are arranged in parallel. The ground track has grooves, and the wheel is located in the groove and moves along the groove.

[0006] Furthermore, the power mechanism includes a motor, a rotating rod, an infrared proximity sensor, and a controller. The two ends of the rotating rod are respectively fixedly connected to one of the wheels. A driven bevel gear is sleeved and fixedly connected to the rotating rod. A driving bevel gear is fixedly connected to the output end of the motor. The driven bevel gear and the driving bevel gear mesh and drive each other. The infrared proximity sensor is fixedly connected to both sides of the vehicle body. The infrared proximity sensor is communicatively connected to the controller. The motor is controlled by the controller.

[0007] Furthermore, the spraying mechanism includes a delivery pipe, a support frame, and a spray nozzle. The bottom of the support frame is fixedly connected to the upper end of the horizontal plate. The delivery pipe is fixedly connected to the support frame through a fixing ring. The input end of the spray nozzle is fixedly connected to the delivery pipe, and the output end is set downwards. The flexible hose is connected to the input end of the delivery pipe.

[0008] Furthermore, the top of the medicine tank is provided with a medicine inlet, and a waste liquid discharge pipe is fixedly connected to one side of the bottom. A valve is installed on the waste liquid discharge pipe.

[0009] This utility model has the following advantages compared with the prior art:

[0010] 1. This utility model, by setting up a horizontal plate, a sliding rod, a threaded block, and an adjusting screw, allows the horizontal plate, which is fixedly connected to the threaded block, to move up and down by rotating the adjusting screw in either the forward or reverse direction. This adjusts the height of the spraying mechanism fixedly connected to the horizontal plate, enabling the device to meet the spraying needs of crops at different growth heights. It solves the problem that existing spraying devices cannot adapt to spraying operations at different heights, thus improving the applicability of this device. By setting up a coiler and a hose, the hose can be extended while increasing the height of the spraying mechanism, and excess hose can be stored while decreasing the height of the spraying mechanism, preventing the hose from getting tangled or knotted. This allows for timely adjustment of the hose length to ensure the normal use of the device.

[0011] 2. By setting up an infrared proximity sensor, this utility model can monitor in real time whether there are obstacles in the direction of the device's operation. In addition to timely controlling the motor to cut off power when the device approaches the side of the greenhouse, so as to stop the device in time when it approaches the side, it can also prevent the device from colliding with people in the direction of operation and avoid injury to people. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0013] Figure 2 This is a side view of the structure of this utility model.

[0014] Figure 3 This is a top view of the horizontal plate of this utility model.

[0015] In the diagram: 1. Vehicle body, 2. Ground track, 3. Wheel, 4. Slide bar, 5. Level plate, 6. Threaded block, 7. Adjusting screw, 8. Rotary disc, 9. Liquid tank, 10. Liquid pump, 11. Battery, 12. Liquid inlet pipe, 13. Coiler, 14. Hose, 15. Motor, 16. Rotating rod, 17. Infrared proximity sensor, 18. Drug delivery pipe, 19. Support frame, 20. Spray nozzle, 21. Dosing port, 22. Waste liquid discharge pipe. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1 to 3 The agricultural greenhouse spraying device shown includes a vehicle body 1 and a ground track 2. Wheels 3 are rotatably connected to the underside of the vehicle body 1 and move along the ground track 2. A power mechanism is fixedly connected inside the vehicle body 1, driving the wheels 3. A spraying mechanism and vertically arranged slide rods 4 are fixedly connected to the top of the vehicle body 1. Three slide rods 4 are provided, and a horizontal plate 5 is slidably connected to each slide rod 4. Each of the four corners of the horizontal plate 5 has a through hole through which the slide rods 4 slide. The spraying mechanism is fixedly connected to the upper end of the horizontal plate 5. A threaded block 6 is fixedly connected to the horizontal plate 5, and an adjusting screw 7 is threaded into the threaded block 6. The adjusting screw 7 is parallel to the slide rods 4. The upper end of the rod 7 is fixedly connected to the rotating disk 8, and the smooth part without threads at the lower end is rotatably connected to the top of the vehicle body 1 through a bearing. The vehicle body 1 is fixedly connected to the liquid tank 9, the liquid pump 10, and the storage battery 11. The input end of the liquid pump 10 is fixedly connected to the inlet pipe 12, and the output end is connected to the rotary joint of the coil device 13 through a pipe. The two sides of the coil device 13 are rotatably connected to the vehicle body 1 through fixed rods. The coil device 13 is wound with a flexible hose 14, and the other end of the flexible hose 14 is fixedly connected to the input end of the spraying mechanism. The lower end of the inlet pipe 12 extends into the liquid tank 9, and the lowest end of the inlet pipe 12 is below the liquid level in the liquid tank 9. The storage battery 11 is electrically connected to the power mechanism and the liquid pump 10 respectively.

[0018] It should be noted that the coiler 13 is an existing device, and its structure will not be described in detail.

[0019] In order for the device to move along the direction of the ground track 2, the ground track 2 is laid horizontally on the ground and the laying position is located in the middle of the land inside the greenhouse. That is, crops are planted on both sides of the ground track 2. There are two parallel ground tracks 2, and grooves are opened on the ground track 2. The wheels 3 are located in the grooves and move along the grooves.

[0020] To drive the movement of this device, the power mechanism includes a motor 15, a rotating rod 16, an infrared proximity sensor 17, and a controller. Both ends of the rotating rod 16 are fixedly connected to one of the wheels 3. A driven bevel gear is sleeved and fixedly connected to the rotating rod 16. A driving bevel gear is fixedly connected to the output end of the motor 15. The driven and driving bevel gears mesh and transmit power. Two infrared proximity sensors 17 are provided, fixedly connected to both sides of the vehicle body 1. After determining the direction of operation for spraying, only the infrared proximity sensor 17 located on the side in front of the direction of operation is activated, while the other infrared proximity sensor 17 is deactivated. The infrared proximity sensors 17 are communicatively connected to the controller. The motor 15 is controlled by the controller and is a reversible motor. The controller uses a PLC. The controller and battery power the motor 15, controller, and infrared proximity sensor 17. The infrared proximity sensor 17 has an infrared signal transmitter and receiver, with an effective detection distance of 0cm to 100cm. The transmitter sends infrared signals, and the receiver receives infrared signals reflected back from obstacles. This method confirms whether the device has moved to a position close to the sides of the greenhouse. By cutting off the power to the motor 15, the device can be stopped in time when it approaches the edge of the greenhouse. In addition, when there are people on the ground track 2 in front of the device's direction of travel, the infrared proximity sensor 17 can also detect that the device is close to an obstacle and stop it in time to avoid the device hitting people. If the device is accidentally stopped, the motor can be restarted on the controller to make the device move again and ensure the spraying operation can continue.

[0021] For spraying crops in the greenhouse, the spraying mechanism includes a delivery pipe 18, a support frame 19, and a spray nozzle 20. The bottom of the support frame 19 is fixedly connected to the upper end of the horizontal plate 5. The delivery pipe 18 is fixedly connected to the support frame 19 through a fixing ring. The input end of the spray nozzle 20 is fixedly connected to the delivery pipe 18, and the output end is set downwards. The hose 14 is connected to the input end of the delivery pipe 18. The support frame 19 can improve the stability of the delivery pipe 18.

[0022] To facilitate the addition of pesticides to be sprayed and the discharge of any unused pesticides into the pesticide tank 9, a pesticide addition port 21 is provided on the top of the pesticide tank 9, and a waste liquid discharge pipe 22 is fixedly connected to one side of the bottom. A valve is installed on the waste liquid discharge pipe 22.

[0023] The specific working process of this utility model is as follows:

[0024] Add the pesticide to be sprayed into the pesticide tank 9 through the inlet 21. Check and confirm that the wheels 3 of the device are in the grooves of the ground track 2. Then, turn on the power and start the liquid pump 10 and motor 15. The liquid pump 10 draws and pumps the pesticide solution in the pesticide tank 9 through the inlet pipe 12, passing it through the hose 14 and the delivery pipe 18 in sequence, and finally spraying it out through the spray nozzle 20. At the same time, the motor 15 rotates, driving the rotating rod 16 to rotate through the meshing of the driving and driven bevel gears, thereby rotating the wheels 3 and moving the vehicle body 1 along the ground track. The vehicle continuously sprays pesticide onto the crops, carrying out the spraying operation. The vehicle body 1 gradually moves from one side of the greenhouse to the other. When it approaches the edge of the greenhouse, the infrared proximity sensor 17 receives the signal reflected back from the side of the greenhouse and transmits the signal to the controller. The controller controls the motor 15 to stop, and the vehicle body 1 gradually stops after losing power, completing the spraying operation. Since the vehicle body 1 stays on one side of the greenhouse after each spraying operation, it can be used again by changing the rotation direction of the motor on the controller panel.

[0025] When the height of the spray nozzle 20 needs to be adjusted according to the height of the crops in the greenhouse, the rotating disc 8 can be turned manually to make the adjusting screw 7 rotate. Under the action of the screw 7 and the threaded block, the horizontal plate 5 gradually rises, thereby raising the spraying mechanism fixedly connected to it, thus increasing the height of the spray nozzle. Similarly, when the height of the spray nozzle 20 needs to be lowered, the rotating disc 8 can be turned in the opposite direction.

Claims

1. A spraying device for agricultural greenhouses, comprising a vehicle body (1) and a ground track (2), wherein wheels (3) are rotatably connected to the underside of the vehicle body (1), the wheels (3) move along the ground track (2), and a power mechanism is fixedly connected inside the vehicle body (1), the wheels (3) being driven by the power mechanism, characterized in that: The top of the vehicle body (1) is fixedly connected to a spraying mechanism and a vertically arranged slide rod (4). There are three slide rods (4). A horizontal plate (5) is slidably connected to the slide rod (4). The spraying mechanism is fixedly connected to the upper end of the horizontal plate (5). A threaded block (6) is fixedly connected to the horizontal plate (5). An adjusting screw (7) is internally threaded into the threaded block (6). The adjusting screw (7) is parallel to the slide rod (4). A rotating disk (8) is fixedly connected to the upper end of the adjusting screw (7), and the smooth part at the lower end is rotatably connected to the top of the vehicle body (1). The internal fixed connection includes a liquid tank (9), a liquid pump (10), and a storage battery (11). The input end of the liquid pump (10) is fixedly connected to an inlet pipe (12), and the output end is connected to the rotary joint of the coil (13) through a pipe. The two sides of the coil (13) are rotatably connected to the vehicle body (1) through fixed rods. A flexible hose (14) is wound around the coil (13), and the other end of the flexible hose (14) is fixedly connected to the input end of the spraying mechanism. The lower end of the inlet pipe (12) extends into the liquid tank (9). The storage battery (11) is electrically connected to the power mechanism and the liquid pump (10) respectively.

2. The agricultural greenhouse spraying device according to claim 1, characterized in that: The ground track (2) is laid horizontally on the ground. There are two ground tracks (2) arranged in parallel. The ground track (2) has grooves. The wheel (3) is located in the groove and moves along the groove.

3. The agricultural greenhouse spraying device according to claim 1, characterized in that: The power mechanism includes a motor (15), a rotating rod (16), an infrared proximity sensor (17), and a controller. The two ends of the rotating rod (16) are fixedly connected to one of the wheels (3). A driven bevel gear is sleeved and fixedly connected on the rotating rod (16). A driving bevel gear is fixedly connected to the output end of the motor (15). The driven bevel gear and the driving bevel gear mesh and drive each other. The infrared proximity sensor (17) is fixedly connected to both sides of the vehicle body (1). The infrared proximity sensor (17) is communicatively connected to the controller. The motor (15) is controlled by the controller.

4. The agricultural greenhouse spraying device according to claim 1, characterized in that: The spraying mechanism includes a delivery pipe (18), a support frame (19), and a spray nozzle (20). The bottom of the support frame (19) is fixedly connected to the upper end of the horizontal plate (5). The delivery pipe (18) is fixedly connected to the support frame (19) through a fixing ring. The input end of the spray nozzle (20) is fixedly connected to the delivery pipe (18), and the output end is set downward. The hose (14) is connected to the input end of the delivery pipe (18).

5. The agricultural greenhouse spraying device according to claim 1, characterized in that: The medicine tank (9) has a medicine inlet (21) at the top and a waste liquid discharge pipe (22) fixedly connected to one side of the bottom. A valve is installed on the waste liquid discharge pipe (22).

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