A watering unit for outdoor agricultural planting in cold climate and a method of using the same

Abstract

This invention relates to the field of agricultural planting technology, and in particular to an irrigation unit for outdoor agricultural planting in cold climates and its usage method. The unit includes an irrigation device, a storage tank, and a conveying pipe A. The storage tank is located at the rear end of the irrigation device, and the conveying pipe A is located at the front end of the irrigation device. A conveying pipe B is fixedly connected to the bottom end of the conveying pipe A. This invention uses an embedded temperature and humidity composite sensor to monitor soil conditions in real time, initiating irrigation only when the soil is water-deficient and the temperature is suitable, avoiding ineffective watering and achieving on-demand water supply, significantly improving water resource utilization efficiency. In low-temperature environments, water injection is automatically prohibited, and a mechanical knocking de-icing mechanism is activated. A servo motor drives a knocking block to periodically impact the outer wall of the extension pipe, generating vibration to shake off ice or prevent icing. In extremely low temperatures, the servo motor adopts an intermittent operation mode, ensuring continuous de-icing while reducing energy consumption, minimizing mechanical wear, and extending equipment lifespan.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, and in particular to an irrigation unit for outdoor agricultural planting in cold climates and its method of use. Background Technology

[0002] Irrigation, or watering the land, is based on the principle that the amount, frequency, and timing of irrigation should be determined according to the water requirements, growth stage, climate, and soil conditions of the medicinal plant. Irrigation should be timely, appropriate, and rational. Types of irrigation include pre-sowing irrigation, seedling irrigation, growing season irrigation, and winter irrigation.

[0003] For example, patent number CN207897567U discloses an irrigation device for sweet potato seedling cultivation. By designing a first support plate, a second support plate, a first baffle and a support rod, the irrigation device can be retracted into the support column when not in use to prevent it from freezing in winter and being accidentally stepped on and damaged by passers-by. By designing an electric heating wire, the device can be kept warm and protected from freezing. For example, patent number CN206835640U discloses a saffron drip irrigation device. This device's water storage tank can be heated by a heating plate to prevent the water from freezing in winter, ensuring the normal operation of the irrigation system. It also ensures the water temperature meets the optimal growth requirements of saffron, preventing excessively low temperatures from affecting its growth. Furthermore, it is equipped with a temperature sensor for real-time monitoring of ambient temperature, enabling automatic heating of the irrigation water. A rainwater collection trough is designed to collect rainwater, saving water resources. The addition of a filter effectively prevents impurities from entering. The height of the fertilizer tank can be adjusted vertically to control whether drip irrigation water flows through the fertilizer tank, achieving automatic mixing of water and fertilizer.

[0004] However, while existing agricultural irrigation devices can prevent freezing, once the pipes have frozen in a low-temperature and high-humidity environment, the structure cannot actively remove the ice layer, and the irrigation function will still be interrupted. Furthermore, since the pipes are located in the soil, they cannot be manually de-iced after freezing, which leads to ice crystal blockage and affects irrigation efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an irrigation unit for outdoor agricultural planting in cold climates and its usage method. It solves the problems of existing agricultural irrigation devices, which, although able to prevent freezing, cannot actively remove ice once the pipes have frozen in a low-temperature and high-humidity environment, thus interrupting irrigation. Furthermore, pipes located in the soil cannot be manually de-iced after freezing, leading to ice crystal blockage and affecting irrigation efficiency.

[0006] The technical solution of this invention is as follows: an irrigation unit for outdoor agricultural planting in cold climates, comprising an irrigation device, a storage tank, and a conveying pipe A. The storage tank is located at the rear end of the irrigation device, and the conveying pipe A is located at the front end of the irrigation device. A conveying pipe B is fixedly connected to the bottom end of the conveying pipe A. A control valve is fixedly connected to one side of the conveying pipe B. A support frame is fixedly connected to the bottom end of the conveying pipe B. An insulation pipe is movably connected to the inner wall of the support frame. An adjustment component is provided at one end of the insulation pipe to adjust the position of the insulation pipe inside the support frame. An extension pipe is fixedly connected to the inner wall of the insulation pipe. A humidity monitoring mechanism is provided at the bottom end of the extension pipe. A striking seat is connected to both ends of the extension pipe inside the insulation pipe. A striking block is movably connected to the top of the striking seat. A contact block is provided above the striking block on the inner wall of the insulation pipe. The center of the two striking seats is located on the insulation pipe. A transmission assembly is fixedly connected to the inner side of the insulation tube. The transmission assembly is used to drive the two striking blocks to move inside the insulation tube. The adjustment assembly includes a knob. The output end of the knob is located inside the positioning pin and is equipped with a transmission gear. One end of the transmission gear meshes with the insulation tube. When the knob drives the transmission gear to rotate, the transmission gear drives the insulation tube to move inside the support frame. The transmission assembly includes a servo motor. The output end of the servo motor is fixedly connected to a transmission rod. One end of the transmission rod is rotatably connected to a lead screw A. Both ends of the lead screw A extend to the outside of the two striking blocks and are rotatably connected to the insulation tube. When the servo motor rotates, the servo motor, in conjunction with the transmission rod and lead screw A, drives the two striking blocks to move inside the insulation tube. During the movement of the striking blocks, the striking blocks on the top surface of the striking blocks contact the contact blocks, causing the contact blocks to drive the striking blocks to strike the outer wall of the extension tube.

[0007] Preferably, there are four storage tanks, which are connected to the irrigation device through connecting pipes. A water pump is installed at the top of the connecting pipes. When the soil needs to be irrigated, the irrigation device, together with the connecting pipes, conveying pipe A, conveying pipe B, extension pipe and water pump, inputs the water inside the storage tanks into the soil. A connecting hose is installed at the top of the extension pipe, and the extension pipe is connected to the irrigation device through the connecting hose.

[0008] Preferably, a control panel is fixedly connected to the front end of the irrigation device. The control panel is electrically connected to the feed pipe B, the humidity monitoring mechanism, and the servo motor. When the device is started, the feed pipe B, the humidity monitoring mechanism, and the servo motor can be controlled separately through the control panel. The humidity monitoring mechanism includes a humidity sensor, which is electrically connected to the feed pipe B. The humidity sensor is used to monitor the moisture and temperature in the soil. If the moisture in the soil is greater than a preset value, the humidity sensor sends a signal to the control panel, and the control panel closes the control valve. If the moisture in the soil is less than the preset value, the humidity sensor sends a signal to the control panel, and the control panel opens the control valve to input water into the soil. When the temperature in the soil is below zero degrees Celsius, the humidity sensor sends a signal to the control panel, and the control panel starts the servo motor to drive the transmission rod to rotate.

[0009] Preferably, fixed seats are fixedly connected to both sides of the bottom end of the support frame, and positioning nails are fixedly connected to the inner side of the fixed seats. When the support frame is on the ground, it can be fixedly connected to the ground through the fixed seats and positioning nails. A scale is provided on the outer side of the support frame. The scale is used to observe the position of the extension tube penetrating into the soil.

[0010] Preferably, one end of the insulation pipe is provided with a rack seat, and one end of the rack seat is located on the inner wall of the support frame and has a guide groove. One end of the rack seat extends to the inner side of the guide groove. The knob and the transmission gear are an integral structure. The transmission gear meshes with the rack seat. When the knob drives the transmission gear to rotate, the knob, in conjunction with the transmission gear, drives the insulation pipe to move inside the support frame.

[0011] Preferably, a bevel gear is provided at one end of the transmission rod and at the center of the lead screw A. The transmission rod meshes with the lead screw A through the bevel gear. When the transmission rod rotates, the transmission rod, in conjunction with the bevel gear, drives the lead screw A to rotate.

[0012] Preferably, lead screw A is a double-threaded lead screw, and the threads at both ends of lead screw A are symmetrical to each other. When lead screw A rotates, lead screw A drives two striking seats to move relative to each other inside the insulation pipe. A through hole is provided at the center of the striking seat, and the two ends of the extension pipe are inserted into the inside of the through hole.

[0013] Preferably, the insulation pipe and the contact block are integrated into one structure. There are multiple sets of contact blocks and fourteen striking blocks. The number of contact blocks and striking blocks in each set is the same. The opposing surfaces of the contact blocks and striking blocks are all inclined surfaces. When the striking block contacts the contact block, the contact block cooperates with the inclined surface to squeeze the striking block.

[0014] Preferably, a movable groove is provided on the top surface of the striking seat below the striking block, and the bottom end of the striking block extends to the inner side of the movable groove. A connecting spring is fixedly connected to the inner wall of the movable groove. The striking block is movably connected to the striking seat through the connecting spring. When the striking block is not under force, the striking block cooperates with the connecting spring to perform a reset displacement.

[0015] A method for using an irrigation unit for outdoor agricultural planting in cold climates is as follows: S: Place the support frame in the area to be irrigated, and firmly insert it into the ground with the fixing seat and positioning nail to ensure the stability of the overall structure. Turn the knob to adjust the up and down position of the insulation pipe in the support frame through the meshing of the transmission gear and the rack seat, so that the bottom of the extension pipe reaches the target soil depth. Ensure that the four storage tanks are connected to the irrigation device through the connecting pipes, the water pump is in standby mode, and the top of the extension pipe is connected to the conveying pipe B through the connecting hose. S2: When the control panel is powered on, the system completes a self-test. It collects soil moisture content and temperature data in real time through an embedded humidity sensor and transmits it to the control panel. If the soil temperature is ≥ 0℃ and the soil humidity is < preset threshold, the control panel issues a command to open the control valve and start the water pump. Water in the storage tank is injected into the soil sequentially through the irrigation device, delivery pipe A, delivery pipe B, and extension pipe. When the soil humidity is ≥ preset threshold, the control panel closes the control valve and stops irrigation. When the humidity sensor detects that the soil temperature is < 0℃, regardless of the humidity level, the system prioritizes entering the anti-freeze protection state. If the humidity is high at the same time, there is a risk of freezing. The control panel will prevent the control valve from being opened to prevent the injection of new water from causing freezing. S3: Start the knocking de-icing program. The control panel activates the servo motor, which drives the transmission rod to rotate. The transmission rod drives the lead screw A to rotate through the bevel gear. Since the lead screw A has a double-ended symmetrical thread, the two knocking seats move synchronously towards or away from each other along the extension tube. During the movement, the knocking block moves with the knocking seat, and its inclined surface contacts the inclined surface of the contact block and the insulation tube. The contact block squeezes the knocking block, causing it to overcome the elastic force of the connecting spring and move upward. When the knocking block passes the highest point of the contact block, it quickly resets under the action of the connecting spring and violently impacts the outer wall of the extension tube. This process is repeated periodically, generating high-frequency vibration, shaking off the ice layer on the pipe wall or preventing water from adhering and freezing, ensuring the smooth flow of the pipeline. S4: When the soil temperature is < -5℃, the servo motor adopts an intermittent working mode: running for 5–10 seconds and stopping for 30–60 seconds, repeating the cycle. This maintains the de-icing effect while avoiding motor overheating or structural fatigue. The insulation pipe relies on phase change energy storage material to absorb and slowly release heat, maintaining the internal temperature above the freezing point. The outer reflective insulation layer reduces the intrusion of ambient cold, and the inner hydrophobic coating prevents condensation from accumulating into ice.

[0016] The beneficial effects of this invention are: This irrigation unit for outdoor agricultural planting in cold climates monitors soil conditions in real time through an embedded temperature and humidity composite sensor. Irrigation is only initiated when the soil is short of water and the temperature is suitable, avoiding ineffective watering and achieving on-demand water supply, which significantly improves water resource utilization efficiency. In low-temperature environments, water injection is automatically prohibited and a mechanical knocking de-icing mechanism is activated. A servo motor drives a knocking block to periodically strike the outer wall of the extension pipe, generating vibration to shake off the ice layer or prevent it from freezing. In extreme low temperatures, the servo motor adopts an intermittent operation mode, which ensures continuous de-icing effect while reducing energy consumption, reducing mechanical wear, and extending the service life of the equipment. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention; Figure 2 The diagram shown is a structural schematic of the support frame of the present invention; Figure 3 The diagram shown is a structural schematic of the thermal insulation pipe of the present invention. Figure 4 The diagram shown is a structural schematic of the lead screw A of the present invention; Figure 5 The diagram shown is a schematic representation of the structure of the striking base of the present invention. Figure 6 The diagram shown is a schematic representation of the internal structure of the striking base of this invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Irrigation device; 2. Storage tank; 3. Conveying pipe A; 4. Control panel; 5. Conveying pipe B; 6. Support frame; 7. Fixed base; 8. Positioning pin; 9. Knob; 10. Control valve; 11. Insulation pipe; 12. Rack seat; 13. Guide groove; 14. Transmission gear; 15. Extension pipe; 16. Contact block; 17. Striking seat; 18. Lead screw A; 19. Servo motor; 20. Transmission rod; 21. Bevel gear; 22. Striking block; 23. Movable groove; 24. Connecting spring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-6This invention provides an embodiment of an irrigation unit for outdoor agricultural planting in cold climates and its usage method, comprising an irrigation device 1, a storage tank 2, and a conveying pipe A3. The storage tank 2 is located at the rear end of the irrigation device 1, and the conveying pipe A3 is located at the front end of the irrigation device 1. A conveying pipe B5 is fixedly connected to the bottom end of the conveying pipe A3. A control valve 10 is fixedly connected to one side of the conveying pipe B5. A support frame 6 is fixedly connected to the bottom end of the conveying pipe B5. An insulation pipe 11 is movably connected to the inner wall of the support frame 6. An adjustment component is provided at one end of the insulation pipe 11 for adjusting the position of the insulation pipe 11 inside the support frame 6. An extension tube 15 is fixedly connected to the inner wall of the insulation pipe 11. A humidity monitoring mechanism is installed at the bottom end of the extension tube 15. Both ends of the extension tube 15 are connected to striking seats 17 inside the insulation pipe 11. A striking block 22 is movably connected to the top of the striking seat 17. A contact block 16 is installed above the striking block 22 on the inner wall of the insulation pipe 11. A transmission assembly is fixedly connected to the center of the two striking seats 17 inside the insulation pipe 11. The transmission assembly is used to drive the two striking seats 17 to move inside the insulation pipe 11. The adjustment assembly includes a knob 9. The output end of the knob 9 is located inside the positioning pin 8 and is equipped with a transmission mechanism. The drive gear 14 has one end meshing with the insulation tube 11. When the knob 9 drives the drive gear 14 to rotate, the drive gear 14 drives the insulation tube 11 to move inside the support frame 6. The transmission assembly includes a servo motor 19, the output end of which is fixedly connected to a transmission rod 20. One end of the transmission rod 20 is rotatably connected to a lead screw A18. Both ends of the lead screw A18 extend to the outside of two striking seats 17 and are rotatably connected to the insulation tube 11. When the servo motor 19 rotates, the servo motor 19, in conjunction with the transmission rod 20 and the lead screw A18, drives the two striking seats 17 to move inside the insulation tube 11. As the striking base 17 moves, the striking block 22 on the top surface of the striking base 17 comes into contact with the contact block 16, causing the contact block 16 to drive the striking block 22 to strike the outer wall of the extension tube 15. The insulation tube 11 is made of heat insulation material, and its outer wall or interlayer can integrate phase change energy storage material to maintain the internal temperature above the freezing point. The striking block 22 periodically strikes the outer wall of the extension tube 15 under the drive of the transmission component, and the mechanical vibration prevents the tube wall from freezing or shakes off the ice layer that has been formed, ensuring smooth water flow. The outer surface of the insulation tube 11 is covered with a reflective heat insulation layer, and the inner wall is coated with a hydrophobic coating to reduce heat loss and prevent condensate accumulation.

[0021] Please see Figures 1-2In this embodiment, four storage tanks 2 are provided. The four storage tanks 2 are connected to the irrigation device 1 through connecting pipes. A water pump is provided at the top of the connecting pipes. When the soil needs to be irrigated, the irrigation device 1, together with the connecting pipe, conveying pipe A3, conveying pipe B5, extension pipe 15, and water pump, inputs water from the storage tanks 2 into the soil. A connecting hose is provided at the top of the extension pipe 15, and the extension pipe 15 is connected to the soil through the connecting hose. A control panel 4 is fixedly connected to the front end of the irrigation device 1. The control panel 4 is electrically connected to the conveying pipe B5, the humidity monitoring mechanism, and the servo motor 19. When the device is started, the conveying pipe B5, the humidity monitoring mechanism, and the servo motor 19 can be controlled through the control panel 4. The humidity monitoring mechanism includes a humidity sensor, which is electrically connected to the conveying pipe B5. The humidity sensor is used to monitor the moisture and temperature in the soil. If the moisture in the soil is greater than a preset value, the humidity sensor transmits a signal to the control panel 4, and the control panel 4 closes the control valve 10. If the soil moisture content is less than the preset value, the humidity sensor sends a signal to the control panel 4. The control panel 4 then opens the control valve 10 to introduce water into the soil. When the soil temperature is below zero degrees Celsius, the humidity sensor sends a signal to the control panel 4. The control panel 4 then activates the servo motor 19 to rotate the transmission rod 20. The humidity sensor not only detects soil moisture content but also integrates a temperature sensing module, providing real-time feedback of soil temperature data to the control panel 4. When the temperature is below 0°C and the humidity is above the threshold, the system prioritizes the knocking de-icing program instead of continuing irrigation to prevent water from freezing and causing pipe blockage or soil compaction. The humidity sensor is an embedded composite sensor with its probe penetrating the soil to a depth of at least 20 cm to obtain real temperature and humidity data for the crop root zone. A delayed start module is provided between the servo motor 19 and the control panel 4. When the detected soil temperature is below -5°C, the servo motor 19 operates in an intermittent mode, running for 5-10 seconds each time with an interval of 30-60 seconds, to save energy and avoid excessive vibration that could damage the pipes.

[0022] Please see Figures 3-4 In this embodiment, fixed seats 7 are fixedly connected to both sides of the bottom end of the support frame 6, and positioning nails 8 are fixedly connected to the inner side of the fixed seats 7. When the support frame 6 is on the ground, it can be fixedly connected to the ground through the fixed seats 7 and positioning nails 8. A scale is provided on the outer side of the support frame 6. The scale is used to observe the position of the extension tube 15 penetrating into the soil.

[0023] Please see Figures 5-6In this embodiment, a rack seat 12 is provided at one end of the heat insulation pipe 11. A guide groove 13 is opened at one end of the rack seat 12 on the inner wall of the support frame 6. One end of the rack seat 12 extends to the inner side of the guide groove 13. The knob 9 and the transmission gear 14 are an integral structure. The transmission gear 14 meshes with the rack seat 12. The knob 9 is a self-locking knob (according to CN223536707U, a knob-type mechanical self-locking mechanism, by rotating the knob, the bottom of the knob is pressed against the top of the sliding buckle. Due to the special shape of the bottom of the knob and the top of the sliding buckle, when the bottom of the knob is pressed against the top of the sliding buckle, the bottom of the knob is pressed against the top of the sliding buckle. When the force generated when the top of the sliding buckle contacts is sufficient, it will cause the sliding buckle to move downwards. The sliding buckle drives the positioning block to move synchronously, so that the outer wall of the positioning block is inserted into the inner wall of the positioning hole, thereby completing the self-locking and preventing the sliding rod from continuing to slide on the inner wall of the fixed rod, thus achieving the self-locking effect. When the knob 9 drives the transmission gear 14 to rotate, the knob 9, in conjunction with the transmission gear 14, drives the insulation tube 11 to move inside the support frame 6. A bevel gear 21 is provided at one end of the transmission rod 20 and at the center of the lead screw A18. The transmission rod 20 meshes with the lead screw A18 through the bevel gear 21. When the transmission rod 20 rotates, it engages with the bevel gear 21 to drive the lead screw A18 to rotate. The lead screw A18 is a double-threaded lead screw with symmetrical threads at both ends. When the lead screw A18 rotates, it drives the two striking seats 17 to move relative to each other inside the insulation pipe 11. A through hole is provided at the center of the striking seat 17, and the two ends of the extension tube 15 are inserted into the inside of the through hole. The insulation pipe 11 and the contact block 16 are an integral structure. There are multiple sets of contact blocks 16 and fourteen striking blocks 22. Each set of contact blocks 16 interacts with the striking blocks 22. The number of blocks 22 is the same. The opposing surfaces of the contact block 16 and the striking block 22 are both inclined. When the striking block 22 contacts the contact block 16, the contact block 16 presses the striking block 22 with the inclined surface. The bottom of the striking block 22 is provided with a movable groove 23 on the top surface of the striking seat 17. The bottom end of the striking block 22 extends to the inside of the movable groove 23. A connecting spring 24 is fixedly connected to the inner wall of the movable groove 23. The striking block 22 is movably connected to the striking seat 17 through the connecting spring 24. When the striking block 22 is not under force, the striking block 22 moves back to its original position with the connecting spring 24.

[0024] During operation, the support frame 6 is placed in the area to be irrigated and firmly inserted into the ground using the fixing seat 7 and positioning nails 8 to ensure overall structural stability. The knob 9 is rotated to adjust the vertical position of the insulation pipe 11 within the support frame 6 through the meshing of the transmission gear 14 and rack seat 12, ensuring the bottom of the extension pipe 15 reaches the target soil depth. This ensures the four storage tanks 2 are connected to the irrigation device 1 via connecting pipes, the water pump is in standby mode, and the top of the extension pipe 15 is connected to the delivery pipe B5 via a connecting hose. The power to the control panel 4 is turned on, and the system completes a self-test. The embedded humidity sensor collects soil moisture and temperature data in real time and transmits it to the control panel 4. If the soil temperature is ≥ 0℃, and the soil moisture is < a preset threshold: the control panel 4 issues a command to open the control valve 10, starting the water pump. Water from the storage tanks 2 is injected into the soil sequentially through the irrigation device 1, delivery pipe A3, delivery pipe B5, and extension pipe 15. If the soil moisture is ≥ a preset threshold: the control panel 4 closes the control valve 10, stopping irrigation. If the humidity sensor detects that the soil temperature is < a preset threshold: At 0℃, regardless of humidity, the system prioritizes entering antifreeze protection mode. If humidity is high at the same time, there is a risk of icing: Control panel 4 prohibits the opening of control valve 10 to prevent new water injection from causing freezing. The knocking defrosting program is initiated: Control panel 4 activates servo motor 19, which drives transmission rod 20 to rotate. Transmission rod 20 drives lead screw A18 to rotate via bevel gear 21. Since lead screw A18 has a double-ended symmetrical thread, the two knocking seats 17 move synchronously towards or away from each other along the extension pipe 15. During the movement, the knocking block 22 moves with the knocking seat 17, and its inclined surface contacts the inclined surface of the contact block 16 and the insulation pipe 11. The contact block 16 presses against the knocking block 22, causing it to overcome the elastic force of the connecting spring 24 and move upwards. When the knocking block 22 passes the highest point of the contact block 16, it quickly resets under the action of the connecting spring 24, violently impacting the outer wall of the extension pipe 15. This process repeats periodically, generating high-frequency vibrations to shake off ice layers on the pipe wall or prevent moisture from adhering and freezing, ensuring unobstructed pipe flow. When the soil temperature is < -5℃ At this time, the servo motor 19 adopts an intermittent working mode: running for 5-10 seconds and stopping for 30-60 seconds, and repeating the cycle. This maintains the de-icing effect and avoids motor overheating or structural fatigue. Meanwhile, the insulation pipe 11 relies on phase change energy storage material to absorb and slowly release heat, maintaining the internal temperature above the freezing point. The outer reflective insulation layer reduces the intrusion of ambient cold, and the inner wall hydrophobic coating prevents condensation from accumulating into ice. Compared with the prior art document CN207897567U, an irrigation device for sweet potato seedling cultivation, by designing a first support plate, a second support plate, a first baffle and a support rod, the irrigation device can be retracted into the support column when not in use to prevent it from being frozen in winter and damaged by accidental trampling by passers-by. By designing an electric heating wire, the device can be kept warm and protected from freezing. CN206835640U describes a saffron drip irrigation device. This device's water storage tank can be heated by a heating plate to prevent freezing in winter, ensuring the normal operation of the irrigation system. It also ensures the water temperature meets the optimal growth requirements of saffron, preventing excessively low temperatures from affecting its growth. Furthermore, it is equipped with a temperature sensor for real-time monitoring of ambient temperature, enabling automatic heating of the irrigation water. A rainwater collection trough is designed to collect rainwater, conserving water resources. The addition of a filter effectively prevents impurities from entering. The height of the fertilizer tank can be adjusted vertically to control whether drip irrigation water flows through the fertilizer tank, achieving automatic mixing of water and fertilizer. This application uses an embedded temperature and humidity composite sensor to monitor soil conditions in real time, and only starts irrigation when the soil is short of water and the temperature is suitable, avoiding ineffective watering, realizing on-demand water supply, and significantly improving water resource utilization efficiency. In low-temperature environments, water injection is automatically prohibited and a mechanical knocking de-icing mechanism is activated. A servo motor drives a knocking block to periodically strike the outer wall of the extension pipe, generating vibration to shake off the ice layer or prevent icing. In extreme low temperatures, the servo motor adopts an intermittent operation mode, which ensures continuous de-icing effect, reduces energy consumption, reduces mechanical wear, and extends the service life of the equipment.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An irrigation unit for outdoor agricultural planting in cold climates, comprising an irrigation device (1), a storage tank (2), and a conveying pipe A (3), wherein the storage tank (2) is located at the rear end of the irrigation device (1), and the conveying pipe A (3) is located at the front end of the irrigation device (1), characterized in that: A conveying pipe B (5) is fixedly connected to the bottom end of the conveying pipe A (3). A control valve (10) is fixedly connected to one side of the conveying pipe B (5). A support frame (6) is fixedly connected to the bottom end of the conveying pipe B (5). An insulation pipe (11) is movably connected to the inner wall of the support frame (6). An adjustment component is provided at one end of the insulation pipe (11). The adjustment component is used to adjust the position of the insulation pipe (11) inside the support frame (6). An extension pipe (15) is fixedly connected to the inner wall of the insulation pipe (11). The bottom of the extension pipe (15) is... A humidity monitoring mechanism is provided at the end. Both ends of the extension tube (15) are connected to the inner side of the insulation tube (11) with a striking seat (17). The top of the striking seat (17) is movably connected to a striking block (22). Above the striking block (22) is a contact block (16) located on the inner wall of the insulation tube (11). The center of the two striking seats (17) is fixedly connected to the inner side of the insulation tube (11) with a transmission component. The transmission component is used to drive the two striking seats (17) to move inside the insulation tube (11). The adjustment assembly includes a knob (9), and the output end of the knob (9) is located inside the positioning pin (8) and a transmission gear (14) is provided. One end of the transmission gear (14) meshes with the insulation tube (11). When the knob (9) drives the transmission gear (14) to rotate, the transmission gear (14) drives the insulation tube (11) to move inside the support frame (6). The transmission assembly includes a servo motor (19), the output end of which is fixedly connected to a transmission rod (20). One end of the transmission rod (20) is rotatably connected to a lead screw A (18). Both ends of the lead screw A (18) extend to the outside of the two striking seats (17) and are rotatably connected to the insulation pipe (11). When the servo motor (19) rotates, the servo motor (19) works with the transmission rod (20) and the lead screw A (18) to drive the two striking seats (17) to move within the insulation pipe (11). During the displacement of the striking seats (17), the striking block (22) on the top surface of the striking seat (17) contacts the contact block (16), causing the contact block (16) to drive the striking block (22) to strike the outer wall of the extension pipe (15).

2. The irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: There are four storage tanks (2). The four storage tanks (2) are connected to the irrigation device (1) through connecting pipes. A water pump is installed at the top of the connecting pipe. When the soil needs to be irrigated, the irrigation device (1) works with the connecting pipe, the conveying pipe A (3), the conveying pipe B (5), the extension pipe (15) and the water pump to input the water inside the storage tank (2) into the soil. A connecting hose is installed at the top of the extension pipe (15). The extension pipe (15) is connected to (5) through the connecting hose.

3. The irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: The front end of the irrigation device (1) is fixedly connected to the control panel (4). The control panel (4) is electrically connected to the conveying pipe B (5), the humidity monitoring mechanism, and the servo motor (19). When the device is started, the conveying pipe B (5), the humidity monitoring mechanism, and the servo motor (19) can be controlled by the control panel (4). The humidity monitoring mechanism includes a humidity sensor. The humidity sensor is electrically connected to the conveying pipe B (5). The humidity sensor is used to monitor the moisture and temperature in the soil. If the moisture in the soil is greater than the preset value, the humidity sensor transmits a signal to the control panel (4), and the control panel (4) closes the control valve (10). If the moisture in the soil is less than the preset value, the humidity sensor transmits a signal to the control panel (4), and the control panel (4) opens the control valve (10) to input water into the soil. When the temperature in the soil is below zero degrees, the humidity sensor transmits a signal to the control panel (4), and the control panel (4) starts the servo motor (19) to drive the transmission rod (20) to rotate.

4. The irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: The support frame (6) has fixed seats (7) on both sides of its bottom end. The fixed seats (7) have fixed positioning nails (8) on their inner sides. When the support frame (6) is on the ground, it can be fixedly connected to the ground through the fixed seats (7) and positioning nails (8). A scale is provided on the outside of the support frame (6). The scale is used to observe the position of the extension tube (15) in the soil.

5. An irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: One end of the insulation pipe (11) is provided with a rack seat (12). One end of the rack seat (12) is located on the inner wall of the support frame (6) and a guide groove (13) is provided. One end of the rack seat (12) extends to the inner side of the guide groove (13). The knob (9) and the transmission gear (14) are an integral structure. The transmission gear (14) meshes with the rack seat (12). When the knob (9) drives the transmission gear (14) to rotate, the knob (9) cooperates with the transmission gear (14) to drive the insulation pipe (11) to move inside the support frame (6).

6. The irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: A bevel gear (21) is provided at one end of the transmission rod (20) and at the center of the lead screw A (18). The transmission rod (20) meshes with the lead screw A (18) through the bevel gear (21). When the transmission rod (20) rotates, the transmission rod (20) cooperates with the bevel gear (21) to drive the lead screw A (18) to rotate.

7. An irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: The lead screw A (18) is a double-threaded lead screw. The threads at both ends of the lead screw A (18) are symmetrical. When the lead screw A (18) rotates, the lead screw A (18) drives the two striking seats (17) to move relative to each other inside the insulation pipe (11). A through hole is provided at the center of the striking seat (17), and the two ends of the extension pipe (15) are inserted into the inside of the through hole.

8. An irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: The insulation pipe (11) and the contact block (16) are an integral structure. There are multiple sets of contact blocks (16) and fourteen striking blocks (22). The number of contact blocks (16) and striking blocks (22) in each set is the same. The opposite surfaces of the contact blocks (16) and the striking blocks (22) are all inclined surfaces. When the striking blocks (22) and the contact blocks (16) come into contact, the contact blocks (16) cooperate with the inclined surfaces to squeeze the striking blocks (22).

9. An irrigation unit for outdoor agricultural planting in cold climates according to claim 1, characterized in that: The bottom of the striking block (22) is provided with a movable groove (23) on the top surface of the striking seat (17). The bottom end of the striking block (22) extends to the inside of the movable groove (23). A connecting spring (24) is fixedly connected to the inner wall of the movable groove (23). The striking block (22) is movably connected to the striking seat (17) through the connecting spring (24). When the striking block (22) is not under force, the striking block (22) cooperates with the connecting spring (24) to perform a reset displacement.

10. A method of using an irrigation unit for outdoor agricultural planting in cold climates, characterized in that: The irrigation unit for outdoor agricultural planting in cold climates, as described in any one of claims 1-9, operates as follows: S1: Place the support frame (6) in the area to be irrigated, and firmly insert it into the ground through the fixing seat (7) and positioning nail (8) to ensure the overall structure is stable. Rotate the knob (9) to adjust the up and down position of the insulation pipe (11) in the support frame (6) through the meshing of the transmission gear (14) and the rack seat (12) so that the bottom end of the extension pipe (15) reaches the target soil depth. Ensure that the four storage tanks (2) are connected to the irrigation device (1) through the connecting pipe, the water pump is in standby mode, and the top end of the extension pipe (15) is connected to the conveying pipe B (5) through the connecting hose. S2: Connect the power supply of the control panel (4), the system completes self-test, collects soil moisture content and temperature data in real time through the embedded humidity sensor, and transmits it to the control panel (4). If the soil temperature is ≥ 0℃, when the soil humidity is < preset threshold: the control panel (4) issues an instruction to open the control valve (10) and start the water pump. The water in the storage tank (2) is injected into the soil through the irrigation device (1), the conveying pipe A (3), the conveying pipe B (5) and the extension pipe (15). When the soil humidity is ≥ preset threshold: the control panel (4) closes the control valve (10) and stops irrigation. When the humidity sensor detects that the soil temperature is < 0℃, regardless of the humidity, the system will first enter the anti-freeze protection state. If the humidity is high at the same time, there is a risk of freezing. The control panel (4) prohibits the opening of the control valve (10) to prevent the injection of new water from causing freezing. S3: Start the knocking de-icing program. The control panel (4) activates the servo motor (19). The servo motor (19) starts and drives the transmission rod (20) to rotate. The transmission rod (20) drives the lead screw A (18) to rotate through the bevel gear (21). Since the lead screw A (18) is a double-headed symmetrical thread, the two knocking seats (17) move synchronously towards or away from each other along the extension tube (15). During the movement, the knocking block (22) moves with the knocking seat (17). Its inclined surface contacts the inclined surface of the contact block (16) and the insulation tube (11). The contact block (16) squeezes the knocking block (22), causing it to overcome the elastic force of the connecting spring (24) and move upward. When the knocking block (22) passes the highest point of the contact block (16), it quickly resets under the action of the connecting spring (24) and violently hits the outer wall of the extension tube (15). This process is repeated periodically, generating high-frequency vibration, shaking off the ice layer on the pipe wall or preventing water from adhering and freezing, ensuring the smooth flow of the pipeline. S4: When the soil temperature is < -5℃, the servo motor (19) adopts an intermittent working mode: running for 5–10 seconds and stopping for 30–60 seconds, and repeating the cycle. This maintains the de-icing effect and avoids motor overheating or structural fatigue. The insulation pipe (11) relies on phase change energy storage material to absorb and slowly release heat, maintaining the internal temperature above the freezing point. The outer reflective insulation layer reduces the intrusion of ambient cold, and the inner wall hydrophobic coating prevents condensate from accumulating into ice.

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