Water, fertilizer and pesticide integrated sprinkling irrigation device

Abstract

The application provides a water, fertilizer and pesticide integrated sprinkling irrigation device, which comprises a pipe body, a liquid inlet pipe, a shell, a mass ball, a spray pipe and a damping mechanism. The bottom end of the pipe body is provided with a sharp part for inserting into soil. The pipe body is connected with the shell through a connecting part at the top. The side surface of the pipe body is provided with a liquid inlet joint. The liquid inlet pipe is connected with the liquid inlet joint. The mass ball is freely hung and installed in the top of the shell through a swing rod. The spray pipes are oppositely arranged on the two sides of the shell. The damping mechanism is arranged in the spray pipe. The mass ball is connected with the damping mechanism on the two sides through pull ropes. The pull ropes are used for pulling the corresponding side damping mechanism to change the through-flow opening degree. The mass ball is arranged. After the water, fertilizer and pesticide liquid is divided into two sides and sprayed through the damping mechanism, when the shell is inclined, the mass ball remains stationary due to inertia. The corresponding side damping mechanism is pulled through the pull rope to change the opening degree, the jet reaction force is adjusted, and automatic deviation correction is realized.

Description

Technical Field

[0001] This invention relates to the field of fruit tree sprinkler technology, and in particular to an integrated water, fertilizer and pesticide sprinkler irrigation device. Background Technology

[0002] In large-scale fruit tree cultivation, the requirements for water, nutrients, and plant protection vary greatly at different phenological stages. During the fruit enlargement stage, high-frequency, low-concentration water and fertilizer supply is needed to promote cell enlargement and sugar accumulation, as well as to supplement calcium and potassium fertilizers. During the flower bud differentiation stage, moderate water control is required, along with gibberellin, growth regulators, and insecticides, achieving multiple effects with a single spray. Therefore, devices with integrated water, fertilizer, and pesticide spraying functions have become core equipment in modern orchards.

[0003] Currently, the widely used ground-mounted water, fertilizer, and pesticide integrated sprinkler irrigation devices in orchards mostly employ single-sided spray pipes and rotary or oscillating nozzle structures. When the equipment is operating, the high-pressure water, fertilizer, and pesticide solutions sprayed at high speed from the nozzles generate a continuous reverse force. This force easily causes the pipe body and head casing to vibrate periodically. Affected by factors such as installation gaps, soil loosening, and spray disturbance, the pipe body will gradually become tilted and displaced, ultimately causing the spraying direction to deviate from the target fruit trees. This not only significantly reduces the utilization rate of water, fertilizer, and pesticides but also results in material waste. Summary of the Invention

[0004] In view of this, the present invention proposes an integrated water, fertilizer and pesticide sprinkler irrigation device. A mass ball is suspended inside the shell, and spray pipes are arranged on both sides of the shell. A damping mechanism is installed inside the spray pipes. The mass ball is connected to the damping mechanism on both sides by pull ropes. When the sprinkler irrigation device is working, the liquid passes through the damping mechanism from both sides and is sprayed out from the spray pipes on both sides. When the shell is disturbed, the shell tilts to one side. Due to its large inertia, the mass ball remains stationary. Thus, the opposite side of the shell pulls the damping mechanism through the pull rope, which increases the opening of the damping mechanism and the reaction force of the spray pipe, thereby automatically straightening the shell and avoiding resonance of the shell, which would cause the fixed position of the sprinkler rod to shift, affecting the direction of the sprinkler irrigation and causing the pesticide to not be sprayed to the target fruit tree, resulting in waste.

[0005] The technical solution of this invention is implemented as follows:

[0006] A water, fertilizer, and pesticide integrated sprinkler irrigation device includes a pipe body, an inlet pipe, a shell, a mass ball, a spray nozzle, and a damping mechanism. The bottom end of the pipe body is provided with a spike for inserting into the soil. The pipe body is connected to the shell through a connecting part at the top. An inlet connector is provided on the side of the pipe body, and the inlet pipe is connected to the inlet connector. The mass ball is freely suspended and installed at the top of the shell by a pendulum rod. The upper end of the pendulum rod is hinged to the ball at the top of the shell. The spray nozzles are arranged opposite each other on both sides of the shell. The damping mechanism is disposed inside the spray nozzle. The two sides of the mass ball are respectively connected to the damping mechanism by pull ropes, which are used to pull the corresponding damping mechanism to change the flow opening.

[0007] Preferably, the damping mechanism includes a sleeve, a piston, a piston rod, a helical spring, and a conical sealing block. The sleeve is fixedly installed inside the nozzle and has a liquid passage hole in its radial direction. The piston is slidably and sealingly assembled inside the sleeve. The piston rod is fixedly connected to one side of the piston and extends out of the sleeve and is connected to a pull rope. The helical spring is sleeved on the outside of the piston rod, with one end abutting against the piston and the other end abutting against the end of the sleeve. The conical sealing block is fixed at the end of the piston away from the piston rod. A conical sealing hole is provided on the inner side of the nozzle corresponding to the position of the conical sealing block. The conical sealing block can move with the piston to block or move away from the conical sealing hole.

[0008] Preferably, multiple sets of liquid through holes are provided at intervals along the axial direction of the sleeve, and the diameter of each set of liquid through holes gradually increases outward along the sleeve axis, and the liquid through holes in each set are evenly distributed along the circumference of the sleeve.

[0009] Preferably, the top of the shell is provided with a spherical cavity, the bottom of the spherical cavity is provided with a conical through hole, the spherical cavity is connected to the inside of the shell through the conical through hole, a sphere is provided in the spherical cavity, and a pendulum rod is fixedly provided at the bottom of the sphere. The pendulum rod extends downward through the conical through hole and is connected to the mass ball, so that the mass ball swings freely inside the shell.

[0010] Preferably, it also includes locking nuts, the nozzle is threadedly connected to the housing, and two locking nuts are sleeved on the outside of the nozzle to lock the nozzle.

[0011] Preferably, it also includes an adjustment mechanism, which includes an electric push rod, a tension sensor, and a control unit. The mass ball has cavities on both sides, the electric push rod is respectively disposed on the inner wall of the cavity, the tension sensor is disposed on the telescopic end of the electric push rod, the pull rope is fixed to the tension sensor, and the control unit is disposed on the side of the housing and electrically connected to the electric push rod and the tension sensor.

[0012] Preferably, a sealing ring is nested around the outer ring of the piston, and the piston slides and seals against the inner wall of the sleeve through the sealing ring.

[0013] Preferably, the mass ball is made of lead-tungsten alloy, and the shell, nozzle, and sleeve are all made of water- and fertilizer-resistant engineering plastics.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] A mass ball is suspended inside the casing, and nozzles with damping mechanisms are symmetrically arranged on both sides of the casing. The mass ball is connected to the damping mechanisms on both sides via ropes. During operation, water, fertilizer, and pesticide solutions are sprayed simultaneously through the nozzles on both sides, forming a stable spray. When the casing tilts due to external disturbance, the mass ball remains stationary due to inertia. The rope on the tilted side pulls the corresponding damping mechanism, increasing the flow opening of the nozzle on that side, thereby increasing the spray reaction force on that side and achieving automatic correction and resetting of the casing. This structure effectively avoids casing resonance and sprinkler rod displacement caused by spray reaction force, prevents the spray direction from deviating from the target fruit tree, significantly improves the utilization efficiency of water, fertilizer, and pesticides, reduces material waste, and lowers the frequency of manual adjustments. It is suitable for large-scale, precision sprinkler irrigation operations in orchards. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of Example 2;

[0021] Figure 5 This is a schematic diagram of the structure of the mass sphere in Example 2;

[0022] Reference numerals: 1. Tube body; 2. Inlet connector; 3. Inlet pipe; 4. Spike; 5. Shell; 6. Connector; 7. Mass ball; 8. Spherical cavity; 9. Sphere; 10. Swing rod; 11. Conical through hole; 12. Nozzle; 13. Conical sealing hole; 14. Sleeve; 15. Liquid through hole; 16. Piston; 17. Piston rod; 18. Helical spring; 19. Conical sealing block; 20. Pull rope; 21. Locking nut; 22. Sealing ring; 23. Receiving cavity; 24. Electric actuator; 25. Tension sensor; 26. Control unit. Detailed Implementation

[0023] To better understand the technical content of this invention, specific embodiments are provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0024] Example 1

[0025] See Figures 1 to 3 This invention provides an integrated water, fertilizer, and pesticide sprinkler irrigation device, comprising a pipe body 1, an inlet pipe 3, a shell 5, a mass ball 7, a spray pipe 12, and a damping mechanism. The bottom end of the pipe body 1 is provided with a spike 4 for inserting into the soil. The pipe body 1 is hollow and is connected to the shell 5 through a connecting part 6 at the top. The pipe body 1 and the connecting part 6 are threaded or fixedly connected. An inlet connector 2 is provided on the side of the pipe body 1. Water, fertilizer, or pesticide solution enters the pipe body 1 from the inlet pipe 3 through the inlet connector 3. The inlet pipe 3 is connected to the inlet connector 2. The mass ball 7 is freely suspended and installed at the top of the shell 5 by a swing rod 10. The spray pipes 12 are arranged opposite each other on both sides of the shell 5. The damping mechanism is arranged inside the spray pipe 12. The two sides of the mass ball 7 are respectively connected to the damping mechanism by pull ropes 20. The mass ball 7 and the two damping mechanisms are at the same horizontal height. The mass ball 7 is located in the middle of the two spray pipes 12. The pull ropes 20 are used to pull the corresponding damping mechanism to change the flow opening.

[0026] Before the integrated water, fertilizer, and pesticide sprinkler system is put into operation, the spiked part 4 at the bottom of the pipe body 1 is first inserted into the soil for fixation, so that the sprinklers on both sides are aligned with the fruit trees. Then, the inlet pipe 3 is connected to the inlet connector 2. Water, fertilizer, or pesticide solution enters the shell 5 through the inlet connector 2 and the inlet pipe 3, and then flows into the symmetrically installed spray pipes 12 on both sides, and is sprayed outward through the damping mechanism inside each. When the device is working normally, the spray reaction forces of the two spray pipes 12 are balanced, and the shell 5 remains stable. When the soil loosens and the jetting disturbance causes the shell 5 to tilt, the mass ball 7, which is freely suspended inside the shell 5, has a large mass and a large inertia, resulting in a small displacement. However, the shell 5 is displaced relative to the mass ball 7. At this time, one of the pull ropes 20 connected to both sides of the mass ball 7 is released from the nozzle 12 on the same side, and the opening of the damping mechanism decreases. The other pull rope 20 tightens the damping mechanism, and the opening of the damping mechanism increases. The pull rope 20 pulls the damping mechanism on the corresponding side, changing the flow opening of the nozzle 12 on that side, causing a corresponding change in the jetting reaction force on that side. The jetting reaction forces on both sides thus form a difference, which generates a corrective torque opposite to the tilting direction, automatically correcting the shell 5 back to the equilibrium position. In addition, when the shell 5 shakes, the damping mechanism absorbs and dissipates the energy generated during the shaking process, reducing the swing amplitude of the shell 5, ensuring the stability of the device, avoiding the resonance of the shell 5 and the offset of the sprinkler rod caused by the reaction force of the spray, preventing the spraying direction from deviating from the target fruit tree, significantly improving the utilization efficiency of water, fertilizer and pesticide solutions, reducing material waste and the frequency of manual adjustment, and is suitable for large-scale and precise sprinkler irrigation operations in orchards.

[0027] Preferably, the damping mechanism includes a sleeve 14, a piston 16, a piston rod 17, a helical spring 18, and a conical sealing block 19. The sleeve 14 is fixedly installed inside the nozzle 12, and a liquid passage hole 15 is radially opened in the sleeve 14. The piston 16 is slidably sealed and assembled inside the sleeve 14. The piston rod 17 is fixedly connected to one side of the piston 16. The piston rod 17 extends out of the sleeve 14 and is connected to the pull rope 20. The helical spring 18 is sleeved on the outside of the piston rod 17, with one end abutting against the piston 16 and the other end abutting against the end of the sleeve 14. The conical sealing block 19 is fixed at the end of the piston 16 away from the piston rod 17. A conical sealing hole 13 is provided on the inner side of the nozzle 12 corresponding to the position of the conical sealing block 19. The conical sealing block 19 can move with the piston 16 to block or move away from the conical sealing hole 13.

[0028] The sleeve 14 is fixedly installed inside the nozzle 12, and the sleeve 14 has a radially opened liquid passage 15 for the liquid to pass through. The piston 16 is slidably sealed and assembled inside the sleeve 14. The piston rod 17 is fixedly connected to one side of the piston 16. The piston rod 17 extends out of the sleeve 14 and is connected to the pull rope 20 led out from the mass ball 7. The helical spring 18 is sleeved on the outside of the piston rod 17, with one end abutting against the piston 16 and the other end abutting against the end of the sleeve 14, providing the piston 16 with pre-tightening and reset force. The conical sealing block 19 is fixed on the end of the piston 16 away from the piston rod 17. A conical sealing hole 13 is provided at a corresponding position on the inner side of the nozzle 12. The conical sealing block 19 can selectively block or move away from the conical sealing hole 13 as the piston 16 moves. When the housing 5 is in a balanced state, the helical spring 18 maintains a fixed flow gap between the conical sealing block 19 and the conical sealing hole 13, and the nozzle 12 has a stable jet flow rate. When the housing 5 tilts or is disturbed, the mass ball 7 pulls the piston rod 17 via the pull rope 20. The piston 16 overcomes the elastic force of the helical spring 18 and drives the conical sealing block 19 to move axially, thereby changing the flow opening between the conical sealing block 19 and the conical sealing hole 13, and realizing real-time adjustment of the spray reaction force of the nozzle 12. The damping mechanism adopts a conical surface mating structure, which has the characteristics of good adjustment linearity, reliable sealing, and rapid response. At the same time, the preload of the helical spring 18 can ensure that the nozzle 12 has a stable basic flow under normal conditions, avoiding the vibration deviation problem caused by the inability to dynamically compensate for the spray reaction force in traditional sprinkler irrigation devices, and significantly improving the stability of the sprinkler irrigation direction and the utilization rate of water, fertilizer and pesticide solutions.

[0029] Preferably, multiple sets of liquid through holes 15 are provided at intervals along the axial direction of the sleeve 14, and the diameter of each set of liquid through holes 15 gradually increases outward along the axis of the sleeve 14, and each set of liquid through holes 15 is evenly distributed along the circumference of the sleeve 14.

[0030] When the sprinkler irrigation device is working, water, fertilizer, or pesticide solution flows from the inner cavity of the sleeve 14 through the various liquid through holes 15, exits the sleeve 14, enters the intermediate cavity between the sleeve 14 and the nozzle 12, and then is sprayed out from the nozzle 12. The axially spaced multiple sets of liquid through holes 15 allow each set to sequentially participate in or exit the flow path as the conical sealing block 19 moves with the piston 16, achieving a step-by-step, gradual adjustment of the flow opening. This results in different damping effects from the damping mechanism. By selecting different sets of liquid through holes 15 with different orifice diameters, different damping characteristics can be obtained, causing the entire sprinkler irrigation device to produce different damping effects when subjected to vibration. The uniform circumferential distribution of each set of through holes ensures the symmetry of pesticide flow around the sleeve 14, eliminates radial unbalanced forces on the piston 16, makes the piston 16 move more smoothly and steadily, and improves the response consistency and reliability of the damping mechanism. Furthermore, during device operation, when piston 16 moves to its limit position during the correction process, the liquid through-hole 15 with the largest orifice participates in the flow, flushing away particles accumulated at the orifice and achieving self-cleaning. This prevents blockage or flow rate reduction in the liquid through-hole 15 due to long-term use. By adjusting the liquid through-holes 15 with different orifice diameters to participate in the flow, the mass sphere 7 correction system becomes more sensitive to the tilt of the housing 5, further ensuring the long-term stable operation of the sprinkler irrigation device in the complex environment of the orchard and its automatic correction capability in the irrigation direction.

[0031] Preferably, the top of the shell 5 is provided with a spherical cavity 8, and the bottom of the spherical cavity 8 is provided with a conical through hole 11. The spherical cavity 8 is connected to the interior of the shell 5 through the conical through hole 11. A sphere 9 is provided inside the spherical cavity 8, and a swing rod 10 is fixedly provided at the bottom of the sphere 9. The swing rod 10 extends downward through the conical through hole 11 and is connected to the mass ball 7, so that the mass ball 7 swings freely inside the shell 5.

[0032] Utilizing the low-friction ball joint between the spherical cavity 8 and the sphere 9, the pendulum 10 has a certain amount of mobility within the conical through-hole 11, ensuring the flexible swing sensitivity of the mass sphere 7 in the horizontal direction. The conical through-hole 11 also prevents the pendulum 10 from excessively swinging and becoming stuck. When the shell 5 tilts or is disturbed due to soil loosening or the jet reaction force, the mass sphere 7, relying on its own inertia, can quickly and smoothly respond to the attitude changes of the shell 5 through the free rotation of the pendulum 10 and the sphere 9 within the spherical cavity 8. It accurately transmits the relative displacement to the pull ropes 20 on both sides, thereby driving the damping mechanism to adjust the flow opening of the nozzle 12, achieving real-time correction of the jet reaction force. The suspension method of the swing rod 10, which is matched with the spherical cavity 8 and the conical through hole 11, reduces frictional resistance and motion interference, and improves the response speed and reset accuracy of the mass ball 7. This enhances the anti-interference ability and long-term working reliability of the sprinkler irrigation device in complex field environments, effectively avoids the problem of correction failure caused by the jamming of the suspension mechanism, and further ensures the accurate spraying of water, fertilizer and pesticide solutions.

[0033] Preferably, it also includes locking nuts 21. The nozzle 12 is threadedly connected to the housing 5, and two locking nuts 21 are sleeved on the outside of the nozzle 12 to lock the nozzle 12.

[0034] During device assembly or maintenance, the nozzle 12 can be screwed into the side of the housing 5 first, and then the two locking nuts 21 can be tightened in sequence until they abut against the end face of the housing 5. The double-nut anti-loosening principle generates a counter-torque, which effectively prevents the nozzle 12 from becoming loose or shifting angle under long-term vibration or jet reaction force. When it is necessary to adjust the flow rate of the nozzle 12, first loosen the locking nuts 21, and then adjust the position of the nozzle 12 by rotating it. Because the damping mechanism is restricted by the pull rope 20, adjusting the position of the nozzle 12 can adjust the distance between the conical sealing block 19 and the conical sealing hole 13, thereby adjusting the opening of the nozzle 12. Under normal circumstances, the flow rate and velocity of the nozzles 12 on both sides are the same.

[0035] Preferably, a sealing ring 22 is nested around the outer ring of the piston 16, and the piston 16 slides and seals against the inner wall of the sleeve 14 through the sealing ring 22.

[0036] When the liquid flows through the liquid passage 15 of the sleeve 14, the sealing ring 22 fits tightly between the piston 16 and the inner wall of the sleeve 14, forming a dynamic sealing interface to prevent leakage or cross-flow of the high-pressure water fertilizer liquid from the gap between the piston 16 and the sleeve 14, ensuring that all the liquid flows along the preset liquid passage 15 channel; at the same time, when the piston 16 slides back and forth along the inner wall of the sleeve 14 under the action of the pull rope 20 or the push action of the spiral spring 18, the sealing ring 22 maintains a reliable sealing effect while ensuring low frictional resistance, avoiding pressure loss and flow control failure caused by leakage, thereby ensuring accurate and sensitive adjustment of the flow opening between the conical sealing block 19 and the conical sealing hole 13.

[0037] Preferably, the mass ball 7 is made of lead-tungsten alloy, and the shell 5, nozzle 12, and sleeve 14 are all made of water- and fertilizer-resistant engineering plastic.

[0038] The lead-tungsten alloy has a density of 11.3 to 16.8 g / cm³, high self-weight and inertia, and is corrosion-resistant. As the counterweight sphere 7 for the pendulum suspension, the lead-tungsten alloy sphere 7 has a large inertial mass. When the shell 5 is tilted or disturbed, it can remain stationary due to its inertia, thus generating a more significant relative displacement. The pull rope 20 can more effectively drive the damping mechanism to adjust the flow opening, improving the response sensitivity and anti-interference ability of the automatic correction. The shell 5, nozzle 12, and sleeve 14 are made of water and fertilizer corrosion-resistant engineering plastic material, which can withstand the chemical erosion of water, fertilizer, and pesticide solutions for a long time, avoiding rust or corrosion of metal parts that could lead to flow channel blockage or seal failure.

[0039] Example 2

[0040] See Figures 4 to 5 The difference from Example 1 is as follows:

[0041] Preferably, it also includes an adjustment mechanism, which includes an electric push rod 24, a tension sensor 25, and a control unit 26. The mass ball 7 has accommodating cavities 23 on both sides. The electric push rod 24 is respectively disposed on the inner wall of the accommodating cavity 23. The tension sensor 25 is disposed on the telescopic end of the electric push rod 24. The pull rope 20 is fixed to the tension sensor 25. The control unit 26 is disposed on the side of the housing 5 and is electrically connected to the electric push rod 24 and the tension sensor 25.

[0042] When the sprinkler system is working, the electric actuator 24 is activated first, and the telescopic end of the electric actuator 24 extends. The control unit 26 detects the tension detected by the tension sensor 25 in real time. When the tension sensor 25 detects that the tension of the pull rope 20 is zero, it stops. Then, the control unit 26 controls the electric actuator 24 to start, and the telescopic end of the electric actuator 24 continuously retracts. When the tension detected by the tension sensors 25 on both sides reaches the preset value, it stops. At this time, the flow rate of the nozzle 12 is the same, and the piston 16 is also in the same position in the sleeve 14. During the operation of the sprinkler irrigation device, the tension sensor 25 detects the static preload and dynamic tension changes of the pull ropes 20 on both sides in real time and transmits the signals to the control unit 26. When the control unit 26 determines that the tension deviation on both sides exceeds the set threshold, or that the pull ropes 20 have become loose or plastically elongated due to long-term use, it controls the extension and retraction of the electric actuator 24 on the corresponding side to precisely adjust the extension length of the pull ropes 20, ensuring that the pull ropes 20 on both sides maintain a consistent initial tension. Simultaneously, during tilting disturbances of the housing 5, the control unit 26 can assist in adjusting the damping force or extension / retraction stroke of the electric actuator 24 based on the instantaneous changes in the tension signal, optimizing the pulling response of the mass ball 7 to the pull ropes 20. This avoids problems such as the pull ropes 20 becoming loose after long-term stress, uneven tension on both sides leading to decreased correction sensitivity, and inability to adapt to different water pressure conditions and installation errors. It is suitable for large-scale sprinkler irrigation scenarios in orchards with large water pressure fluctuations and long continuous operation times. In this embodiment, the preset reference tension of the pull rope is 12N, and the threshold for the tension deviation on both sides is set at ±1.5N. During operation, the tension sensor collects tension data in real time. When the tension difference on both sides is greater than 1.5N, the control unit determines that the pull rope is slack / tension is unbalanced, drives the corresponding side electric actuator to extend or retract, compensates for the length of the pull rope, and maintains the tension on both sides in the range of 10.5-13.5N, which is suitable for the conventional water and fertilizer supply pressure of 0.2-0.6MPa in orchards.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water, fertilizer, and pesticide integrated sprinkler irrigation device, characterized in that, The device includes a pipe body, an inlet pipe, a shell, a mass sphere, a nozzle, and a damping mechanism. The bottom end of the pipe body is provided with a spike for inserting into the soil. The pipe body is connected to the shell through a connecting part at the top. An inlet connector is provided on the side of the pipe body, and the inlet pipe is connected to the inlet connector. The mass sphere is freely suspended and installed at the top of the shell by a pendulum rod. The upper end of the pendulum rod is hinged to the ball at the top of the shell. The nozzles are arranged opposite each other on both sides of the shell. The damping mechanism is disposed inside the nozzle. The two sides of the mass sphere are respectively connected to the damping mechanism by pull ropes, which are used to pull the corresponding damping mechanism to change the flow opening. The damping mechanism includes a sleeve, a piston, a piston rod, a helical spring, and a conical sealing block. The sleeve is fixedly installed inside the nozzle and has a liquid passage hole in its radial direction. The piston is slidably and sealingly assembled inside the sleeve. The piston rod is fixedly connected to one side of the piston and extends out of the sleeve and is connected to a pull rope. The helical spring is sleeved on the outside of the piston rod, with one end abutting against the piston and the other end abutting against the end of the sleeve. The conical sealing block is fixed at the end of the piston away from the piston rod. A conical sealing hole is provided on the inner side of the nozzle corresponding to the position of the conical sealing block. The conical sealing block can move with the piston to block or move away from the conical sealing hole.

2. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, Multiple sets of liquid through holes are arranged at intervals along the axial direction of the sleeve. The diameter of each set of liquid through holes gradually increases outward along the sleeve axis, and each set of liquid through holes is evenly distributed along the circumference of the sleeve.

3. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, The top of the shell is provided with a spherical cavity, and the bottom of the spherical cavity is provided with a conical through hole. The spherical cavity is connected to the inside of the shell through the conical through hole. A sphere is provided inside the spherical cavity, and a pendulum rod is fixedly provided at the bottom of the sphere. The pendulum rod extends downward through the conical through hole and is connected to a mass ball, so that the mass ball swings freely inside the shell.

4. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, It also includes locking nuts. The nozzle is threadedly connected to the housing, and two locking nuts are sleeved on the outside of the nozzle to lock it.

5. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, It also includes an adjustment mechanism, which includes an electric push rod, a tension sensor, and a control unit. The mass ball has cavities on both sides, the electric push rod is respectively located on the inner wall of the cavity, the tension sensor is located at the telescopic end of the electric push rod, the pull rope is fixed to the tension sensor, and the control unit is located on the side of the housing and is electrically connected to the electric push rod and the tension sensor.

6. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, The piston outer ring is nested with a sealing ring, and the piston slides and seals against the inner wall of the sleeve through the sealing ring.

7. The integrated water, fertilizer, and pesticide sprinkler irrigation device according to claim 1, characterized in that, The mass ball is made of lead-tungsten alloy, and the shell, nozzle, and sleeve are all made of water- and fertilizer-resistant engineering plastics.

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