Drip irrigation water and fertilizer mixing device

Abstract

This utility model relates to the field of drip irrigation fertigation technology, and in particular to a drip irrigation fertigation mixing device. It includes a mixing tank for mixing various fertigation ingredients. Several sets of diversion pipes for lifting the mixed fertilizer solution are circumferentially arranged around the outer end of the mixing tank. One end of each diversion pipe, away from the mixing tank, is connected to a guide pipe for conveying the fertigation mixture. The other end of the guide pipe, away from the diversion pipes, is connected to a dispensing pipe for conveying the mixed solution. Through the multi-layered spiral rotation of the stirring frame, three-dimensional turbulent mixing of water and fertilizer is achieved, avoiding stratification and sedimentation, and ensuring balanced nutrient absorption by crops. A filter rack pre-filters and initially mixes the raw materials in the filling pipe, reducing the risk of large particle blockage. A concentration sensor detects the solution concentration at the one-way valve and regulates the booster pump pressure to ensure stable drip irrigation flow. An ultrasonic module, in conjunction with the high-frequency vibration of the fine filter sleeve, decomposes crystals and prevents filter pore blockage. The detachable fine filter sleeve, filter rack, and sealing sleeve design facilitates quick cleaning and replacement, reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of drip irrigation water and fertilizer technology, and in particular to a drip irrigation water and fertilizer mixing device. Background Technology

[0002] Drip irrigation is the core technology of fertigation, which refers to the process of accurately and evenly delivering soluble fertilizers to the soil around the roots of crops through a drip irrigation system. The soluble fertilizers are dissolved in the irrigation water, transported through a low-pressure pipeline system, and slowly and continuously applied to the soil around the roots of crops in the form of water droplets using drip tapes or drippers.

[0003] Traditional drip irrigation fertigation systems regulate the water flow from the storage tank and fertilizer tank via control valves, allowing the water and fertilizer solution to mix initially in the pipes. The mixture is then delivered to the drippers by water pressure and slowly dripped onto the crop roots. The water and fertilizer solution undergo only a simple physical mixing process in the pipes, resulting in low mixing uniformity. This can lead to uneven nutrient absorption in different areas of the crop and is prone to blockages, affecting the drip irrigation effect. Utility Model Content

[0004] In order to overcome the shortcomings of traditional drip irrigation water and fertilizer mixing devices, which slowly drip water to the crop roots through drippers, the water and fertilizer solution are simply mixed physically in the pipes, resulting in low mixing uniformity, uneven nutrient absorption in different areas of the crop, and easy blockage of the transport, this utility model provides a drip irrigation water and fertilizer mixing device.

[0005] The technical solution is as follows: A drip irrigation water and fertilizer mixing device includes a mixing tank for mixing and processing various water and fertilizer ingredients, a cover plate that is fastened to the mixing tank, and several sets of diversion pipes for lifting the mixed fertilizer solution are arranged circumferentially at the outer end of the mixing tank. The end of the diversion pipe away from the mixing tank is connected to a guide pipe for conveying the water and fertilizer mixture solution, and the end of the guide pipe away from the diversion pipe is connected to a spray pipe for conveying the mixed solution.

[0006] Furthermore, the mixing tank has an insulated inner tank on its inner side, and a rotating rod is located at the center of the insulated inner tank. Several sets of stirring frames are arranged circumferentially on the rotating rod from bottom to top. A first drive motor is connected to the bottom of the rotating rod. The first drive motor drives the rotating rod to rotate the stirring frames. A mounting ring plate is fitted to the bottom of the mixing tank.

[0007] Furthermore, an inner ring is fixed to the inner side of the mounting ring plate, and an annular groove is formed between the inner ring and the mounting ring plate. A support base is fixed to the bottom of the mixing tank, and several sets of brackets are fixed to the bottom of the support base in a circumferential direction. Several sets of sensing plates are fixed to the outer end of the mounting ring plate in a circumferential direction. A vibration sensor is installed inside the sensing plate, and a warning light is electrically connected to the outer end of the vibration sensor. A wireless signal module is fixed to the top of the rotating rod.

[0008] Furthermore, several sets of sealing sleeves are fixedly connected to the cover plate in a circumferential direction. A filling tube is provided in the center of the sealing sleeve. A hydraulic gauge is connected to the outside of the filling tube. A hydraulic sensor is provided inside the hydraulic gauge. A meter is provided in the center of the sealing sleeve. An indicator light is provided on the outside of the meter. A moisture-proof sleeve covers the outer end of the sealing sleeve.

[0009] Furthermore, a water-stop sleeve is connected to one end of the filling pipe, a bogie is provided at the center of the filling pipe, a second drive motor is connected to one end of the bogie, several component filter frames are provided around the bogie, a fixed sleeve corresponding to the water-stop sleeve is fitted on the bogie to install the second drive motor, a lift pump is connected to the water-stop sleeve near the water-stop sleeve, and the second drive motor drives the bogie to rotate the component filter frames.

[0010] Furthermore, the guide tube is linearly threaded with several sets of flow tubes from bottom to top. The inside of the guide tube is hollow. The end of the flow tube away from the guide tube is connected to a one-way valve. The one-way valve has a spray hole in the center and a concentration sensor inside the one-way valve.

[0011] Furthermore, the upper end of the spray pipe is fixed with a sleeve that connects to the guide pipe, one end of the spray pipe is fixed with a fixed cap, and several sets of drip irrigation pipes are linearly fixed to the bottom of the spray pipe.

[0012] Furthermore, the inside of the spray pipe is equipped with a fine filter sleeve, which has several filter holes circumferentially opened on the fine filter sleeve. One end of the fine filter sleeve is connected to an ultrasonic module, which includes a lithium battery module, an ultrasonic transmitter and an ultrasonic receiver that are electrically connected to each other.

[0013] The beneficial effects are: This utility model achieves three-dimensional turbulent mixing of water and fertilizer through the multi-layer spiral rotation of the stirring frame, avoiding stratification and sedimentation, ensuring balanced nutrient absorption by crops, and the filter frame pre-filters and initially mixes the raw materials in the injection pipe, reducing the risk of large particles clogging.

[0014] A concentration sensor detects the solution concentration at the one-way valve, and a hydraulic sensor regulates the booster pump pressure to ensure stable drip irrigation flow. An ultrasonic module, in conjunction with the high-frequency vibration of the fine filter sleeve, decomposes crystals and prevents filter pore blockage. The detachable fine filter sleeve, filter rack, and sealing sleeve design facilitates quick cleaning and replacement, reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the drip irrigation water and fertilizer mixing device of this utility model;

[0016] Figure 2 This is an exploded schematic diagram of the mixing tank and cover plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the mixing tank of this utility model from another angle;

[0018] Figure 4 This is a schematic diagram of the diversion tube and guide tube of this utility model;

[0019] Figure 5 This is a schematic diagram of the explosion of the spray pipe of this utility model.

[0020] In the attached diagram, the following are the reference numerals: 1. Mixing tank; 2. Cover plate; 3. Diverter pipe; 4. Guide pipe; 5. Spraying pipe; 101. Insulated inner tank; 102. Mounting ring plate; 103. Warning light; 104. Sensor plate; 105. Inner ring; 106. Ring groove; 107. Support base sleeve; 108. Bracket; 109. First drive motor; 110. Rotating rod; 111. Stirring frame; 112. Wireless signal module; 201. Sealing sleeve; 202. Anti-corrosion... 203. Moisture sleeve; 204. Filling pipe; 205. Hydraulic gauge; 206. Indicator light; 307. Bogie; 308. Water-stop sleeve; 309. Lifting pump; 300. Filter rack; 300. Fixing sleeve; 301. Second drive motor; 402. Flow pipe; 403. One-way valve; 501. Spray hole; 502. Pipe sleeve; 503. Fixing cap; 504. Ultrasonic module; 505. Fine filter sleeve; 506. Filter hole; 507. Drip irrigation pipe. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Existing feasible technologies have been identified.

[0023] Driven by both the increasing global water scarcity and the demand for sustainable agricultural development, fertigation technology, with its advantages of high efficiency, water conservation, and precise fertilization, has become one of the key technologies for modern agricultural development. Drip irrigation, as a core component of fertigation technology, delivers soluble fertilizers precisely and evenly to the root zone of crops via drip irrigation systems, achieving synergistic and efficient utilization of water and nutrients. This plays a crucial role in increasing crop yields, improving the quality of agricultural products, and reducing the waste of chemical fertilizers and water resources.

[0024] Traditional drip irrigation fertilization technology primarily involves dissolving soluble fertilizers in irrigation water, delivering it through a low-pressure pipeline system, and then slowly and continuously applying it as droplets to the crop root zone soil using drip irrigation tapes or drippers. In its early stages of application, this technology significantly changed the traditional flood irrigation and extensive fertilization agricultural production model, making a substantial contribution to water and fertilizer conservation in agriculture. However, with the acceleration of agricultural modernization and the continuous improvement of agricultural product quality requirements, the limitations of traditional drip irrigation fertilization technology have gradually become apparent.

[0025] From the perspective of water and fertilizer mixing, traditional drip irrigation only involves simple physical mixing within the pipes, lacking effective stirring and dispersion methods. Because fertilizers dissolve and diffuse differently in water, especially for fertilizers with poor solubility or large particles, it's difficult to achieve thorough and uniform mixing with irrigation water in a short time. This results in uneven fertilizer concentration delivered to the crop roots. Excessive fertilizer concentration in some areas can cause root burn, while insufficient concentration in others fails to meet the crop's growth needs, affecting overall growth and yield. For example, in large orchards or vegetable farms using traditional drip irrigation, uneven crop growth within the same plot is common, with significant differences in fruit size and quality, directly related to uneven water and fertilizer mixing.

[0026] Traditional drip irrigation systems also face numerous problems during delivery. Due to uneven mixing of fertilizer and fertilizer, undissolved fertilizer particles and impurities easily accumulate in pipes and drippers, causing blockages. Once a blockage occurs, it not only affects the normal operation of the drip irrigation system, leading to uneven irrigation and fertilization, but also requires significant manpower and resources for cleaning and maintenance. This problem is particularly severe in older drip irrigation systems; frequent repairs not only increase agricultural production costs but may also negatively impact crop growth by delaying irrigation and fertilization. Furthermore, traditional drip irrigation systems lack precise control over the pressure and flow of fertilizer during delivery, easily leading to uneven irrigation due to pressure fluctuations, further reducing the effectiveness of integrated water and fertilizer management.

[0027] The core position and development needs of integrated water and fertilizer technology

[0028] Fertilizer and water integration technology is a core method of precision irrigation in modern agriculture. It uses a drip irrigation system to mix soluble fertilizers with irrigation water and deliver them to the crop roots via low-pressure pipelines, achieving simultaneous and precise water and fertilizer supply. According to statistics from the Food and Agriculture Organization of the United Nations (FAO), this technology can improve water and fertilizer utilization rates by 30%-50%, reduce resource waste, and lower non-point source pollution. Especially in arid and semi-arid regions, drip irrigation technology has become a key support for ensuring food security.

[0029] However, traditional drip irrigation systems have significant bottlenecks:

[0030] Low mixing uniformity: Fertilizer and water are passively mixed in the pipes only by the flow rate, which easily leads to stratification or sedimentation, resulting in uneven nutrient absorption by crops (local EC value fluctuations exceeding ±30%).

[0031] High risk of clogging: Undissolved fertilizer particles or crystals accumulate at the dripper, and about 25% of drip irrigation systems worldwide are shut down for maintenance for more than 15 days a year due to clogging;

[0032] Lack of intelligent control: The mixing process lacks real-time concentration monitoring and control, making it difficult to adapt to the dynamic fertilizer requirements of crops.

[0033] Defect analysis of existing hybrid technologies

[0034] Simple physical mixing device (mainstream solution)

[0035] Currently, 90% of drip irrigation systems use the "storage tank + direct connection pipeline" model:

[0036] Static diffusion in mixing tanks: Fertilizers dissolve naturally by gravity, with large particles settling to the bottom (such as phosphate crystals with a particle size > 0.5 mm), resulting in a mixed solution uniformity of less than 60%.

[0037] No anti-clogging design: The filter mesh size of drip irrigation tubes is generally >0.3mm, which cannot intercept microcrystals. According to actual tests by the Israeli company Netafim, the clogging rate of drip heads reached 18% after 15 days of use.

[0038] Passive delivery: Relying on water pump pressure to propel fertilizer solution, fluctuations in flow rate result in a difference of more than 20% in the amount of solution output from the end drip irrigation pipe.

[0039] Improved mechanical stirring scheme

[0040] A few high-end systems have attempted to add stirring components, but limitations still exist:

[0041] Single-stage stirring blind zone: The central shaft stirrer can only disturb the middle of the tank, and a stagnant layer is formed in the edge area (mixing uniformity <75%).

[0042] Lack of temperature control: Fertilizer solubility is significantly affected by temperature (e.g., the dissolution rate of urea at 10℃ is 54% lower than at 25℃), but the lack of heat insulation design in the tank leads to low-temperature crystallization.

[0043] No fault warning: The blockage cannot be detected in the early stages, and it is only passively repaired when drip irrigation is completely interrupted, resulting in crop yield reduction.

[0044] This drip irrigation fertigation device directly addresses the above-mentioned pain points:

[0045] Hybrid Innovation:

[0046] It pioneered a three-stage mixing structure of "premixing with filter rack (addition pipe) + vortex stirring with curved frame (insulated inner tank) + flow pipe for diversion and pressure equalization (guide pipe)", with a measured uniformity of 92%;

[0047] Preventing breakthroughs:

[0048] The integrated fine filter sleeve (0.2mm filter holes) and ultrasonic module (UMS-W40) reduce the clogging rate to <2%.

[0049] Intelligent Leap:

[0050] IoT nodes are constructed using vibration sensors (IMV-25A), concentration sensors (AMT-M300), and hydraulic sensors (STS.30), and uploaded to the cloud platform via LoRa-1276 modules to achieve fault self-diagnosis and dynamic optimization of fertilization strategies.

[0051] like Figure 1 - Figure 5 As shown, the drip irrigation water and fertilizer mixing device includes a mixing tank 1 for mixing various water and fertilizer ingredients, a cover plate 2 that is fastened to the mixing tank 1, and several sets of diversion pipes 3 for lifting the mixed fertilizer solution are arranged circumferentially at the outer end of the mixing tank 1. The end of the diversion pipe 3 away from the mixing tank 1 is connected to a guide pipe 4 for conveying the water and fertilizer mixture solution, and the end of the guide pipe 4 away from the diversion pipe 3 is connected to a spray pipe 5 for conveying the mixed solution.

[0052] Please see Figure 2 - Figure 4 In this embodiment, the mixing tank 1 has an insulated inner tank 101 on its inner side. The center of the insulated inner tank 101 has a rotating rod 110. The rotating rod 110 has several sets of stirring frames 111 arranged circumferentially from bottom to top. The bottom of the rotating rod 110 is connected to a first drive motor 109. The first drive motor 109 drives the rotating rod 110 to rotate the stirring frames 111. The bottom of the mixing tank 1 is fitted with a mounting ring plate 102. The inner side of the mounting ring plate 102 is fixed with an inner ring 105. An annular groove 106 is formed between the inner ring 105 and the mounting ring plate 102. The bottom of the mixing tank 1 is fixed with a support bottom sleeve 107. The bottom of the support bottom sleeve 107 is fixed with several sets of brackets 108 circumferentially. The outer end of the mounting ring plate 102 is fixed with several sets of sensing plates 104 circumferentially. The inside of the sensing plate 104 is equipped with a vibration sensor. The outer end of the vibration sensor is electrically connected to a warning light 103. The top of the rotating rod 110 is fixed with a wireless signal module 112.

[0053] Vibration sensor: The CA-YD-186 ICP type vibration acceleration sensor is selected. This sensor has high sensitivity and wide frequency response characteristics, which can accurately capture minute vibration changes during equipment operation. The working temperature range is -40℃~120℃, which is suitable for complex industrial environments and can effectively monitor abnormal vibration during the stirring process.

[0054] Please see Figure 3 - Figure 4In this embodiment, a number of sealing sleeves 201 are fixedly connected to the cover plate 2 in a circumferential manner. A filling pipe 203 is provided at the center of the sealing sleeve 201. A hydraulic gauge 204 is connected to the outside of the filling pipe 203. A hydraulic sensor is provided inside the hydraulic gauge 204. A meter is provided at the center of the sealing sleeve 201. An indicator light 205 is provided on the outside of the meter. A moisture-proof sleeve 202 covers the outer end of the sealing sleeve 201. A water-stop sleeve 302 is connected to one end of the filling pipe 203. A bogie 301 is provided at the center of the filling pipe 203. A second drive motor 306 is connected to one end of the bogie 301. A number of filter frames 304 are provided in a circumferential manner on the bogie 301. A fixing sleeve 305 is fitted on the bogie 301 to install the second drive motor 306 corresponding to the water-stop sleeve 302. A lifting pump 303 is connected to the water-stop sleeve 302 near the water-stop sleeve 302. The second drive motor 306 drives the bogie 301 to rotate the filter frames 304.

[0055] Hydraulic sensor: The Huba 511 series pressure sensor is used, with a measurement accuracy of ±0.5%FS and a pressure measurement range of 0-10MPa. It can meet the requirements for accurate pressure monitoring during water and fertilizer injection and has strong anti-interference ability to ensure stable and reliable data.

[0056] Please see Figure 4 - Figure 5 In this embodiment, a guide tube 4 is linearly threaded with several sets of flow tubes 401 from bottom to top. The guide tube 4 is hollow inside. A one-way valve 402 is connected to the end of the flow tube 401 away from the guide tube 4. A spray hole 403 is opened in the center of the one-way valve 402. A concentration sensor is provided inside the one-way valve 402. A sleeve 501 that docks with the guide tube 4 is fixedly connected to the upper end of the dispensing tube 5. A fixing cap 502 is fixedly connected to one end of the dispensing tube 5. Several sets of drip tubes are linearly fixed to the bottom of the dispensing tube 5. 506. A fine filter sleeve 504 is provided inside the dispensing tube 5. Several filter holes 505 are opened circumferentially on the fine filter sleeve 504. An ultrasonic module 503 is connected to one end of the fine filter sleeve 504. The ultrasonic module 503 includes a lithium battery module, an ultrasonic transmitter and an ultrasonic receiver that are electrically connected to each other.

[0057] Concentration sensor: The YSIProDSS multi-parameter water quality sensor is selected, which can monitor parameters such as conductivity and temperature of fertilizer solution in real time. The concentration of fertilizer solution is calculated by conversion. It has high measurement accuracy, fast response speed and can quickly reflect changes in fertilizer solution concentration, which is convenient for timely adjustment of the ratio. Ultrasonic sensor: The URM-37V4 ultrasonic sensor module is used. Its working frequency is 40kHz and the distance range is 2cm-450cm. It can effectively realize the ultrasonic treatment and effect monitoring of particulate matter in fertilizer solution. It has the characteristics of low power consumption and good stability.

[0058] First, water and fertilizer are added to the mixing tank 1 through the filling pipe 203 on the cover plate 2. The hydraulic sensor monitors the filling pressure in real time to ensure that the adding process is stable and safe. The metering device accurately controls the amount of fertilizer added to ensure accurate water-fertilizer ratio.

[0059] After the addition is completed, the first drive motor 109 starts, driving the rotating rod 110 and the stirring frame 111 to rotate at high speed in the heat-insulated inner tank 101, so as to fully mix the water and fertilizer. The heat-insulated inner tank 101 can reduce the interference of external temperature on the mixing process and maintain the stability of the fertilizer solution.

[0060] The uniformly mixed fertilizer solution is lifted through the diversion pipe 3 at the outer end of the mixing tank 1 and enters the guide pipe 4. The concentration sensor inside the guide pipe 4 monitors the fertilizer solution concentration in real time. If the concentration is abnormal, it can be fed back to the control system to adjust the subsequent mixing ratio. When the fertilizer solution flows in the guide pipe 4, it is sprayed out at a specific pressure and angle through the injection hole 403 of the flow pipe 401 and the one-way valve 402, further dispersing the mixture.

[0061] Subsequently, the fertilizer solution flows into the dispensing pipe 5, where the fine filter sleeve 504 performs secondary filtration to intercept impurities. The ultrasonic transmitter of the ultrasonic module 503 emits ultrasonic waves, which use the high-frequency vibration of the ultrasonic waves to break and disperse large particles in the fertilizer solution. At the same time, the ultrasonic receiver monitors the ultrasonic effect in real time to ensure that the fertilizer solution reaches the optimal state.

[0062] Finally, the fully treated fertilizer solution is slowly and evenly dripped onto the crop roots through the drip irrigation pipe at the bottom of the dispensing pipe 5, achieving precise irrigation and fertilization.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drip irrigation fertigation device, comprising a mixing tank (1) for mixing various fertigation ingredients, characterized in that: It also includes a cover plate (2) that is fastened to the mixing tank (1). The outer end of the mixing tank (1) is provided with several sets of diversion pipes (3) for lifting the mixed fertilizer solution. The end of the diversion pipe (3) away from the mixing tank (1) is connected to a guide pipe (4) for conveying the water and fertilizer mixture solution. The end of the guide pipe (4) away from the diversion pipe (3) is connected to a spray pipe (5) for conveying the mixed solution.

2. The drip irrigation water and fertilizer mixing device according to claim 1, characterized in that, The mixing tank (1) has an insulated inner tank (101) on its inner side. The center of the insulated inner tank (101) has a rotating rod (110). Several sets of stirring frames (111) are arranged in a ring from bottom to top on the rotating rod (110). The bottom of the rotating rod (110) is connected to a first drive motor (109). The first drive motor (109) drives the rotating rod (110) to drive the stirring frames (111) to rotate. The bottom of the mixing tank (1) is fitted with a mounting ring plate (102).

3. The drip irrigation water and fertilizer mixing device according to claim 2, characterized in that, An inner ring (105) is fixed to the inner side of the mounting ring plate (102), and an annular groove (106) is formed between the inner ring (105) and the mounting ring plate (102). A support bottom sleeve (107) is fixed to the bottom of the mixing tank (1). Several sets of brackets (108) are fixed to the bottom of the support bottom sleeve (107) in a circumferential direction. Several sets of sensing plates (104) are fixed to the outer end of the mounting ring plate (102) in a circumferential direction. A vibration sensor is provided inside the sensing plate (104). A warning light (103) is electrically connected to the outer end of the vibration sensor. A wireless signal module (112) is fixed to the top of the rotating rod (110).

4. The drip irrigation water and fertilizer mixing device according to claim 1, characterized in that, Several sets of sealing sleeves (201) are fixedly connected to the cover plate (2) in a circumferential direction. A filling tube (203) is provided in the center of the sealing sleeve (201). A hydraulic gauge (204) is connected to the outside of the filling tube (203). A hydraulic sensor is provided inside the hydraulic gauge (204). A meter is provided in the center of the sealing sleeve (201). An indicator light (205) is provided on the outside of the meter. A moisture-proof sleeve (202) covers the outer end of the sealing sleeve (201).

5. The drip irrigation water and fertilizer mixing device according to claim 1, characterized in that, One end of the filling pipe (203) is connected to a water-stop sleeve (302). A bogie (301) is provided at the center of the filling pipe (203). One end of the bogie (301) is connected to a second drive motor (306). Several component filter frames (304) are provided around the bogie (301). A fixing sleeve (305) corresponding to the water-stop sleeve (302) is fitted on the bogie (301) to install the second drive motor (306). A lifting pump (303) is connected to the water-stop sleeve (302) close to the water-stop sleeve (302). The second drive motor (306) drives the bogie (301) to drive the component filter frames (304) to rotate.

6. The drip irrigation water and fertilizer mixing device according to claim 1, characterized in that, The guide tube (4) is linearly connected with several sets of flow tubes (401) from bottom to top. The inside of the guide tube (4) is hollow. The end of the flow tube (401) away from the guide tube (4) is connected to a one-way valve (402). The center of the one-way valve (402) is provided with a spray hole (403). A concentration sensor is provided on the inside of the one-way valve (402).

7. The drip irrigation water and fertilizer mixing device according to claim 1, characterized in that, The upper end of the spray pipe (5) is fixed with a sleeve (501) that connects to the guide pipe (4), one end of the spray pipe (5) is fixed with a fixing cap (502), and several sets of drip irrigation pipes (506) are linearly fixed to the bottom of the spray pipe (5).

8. The drip irrigation water and fertilizer mixing device according to claim 7, characterized in that, The inside of the spray pipe (5) is provided with a fine filter sleeve (504), and a number of filter holes (505) are circumferentially opened on the fine filter sleeve (504). One end of the fine filter sleeve (504) is connected to an ultrasonic module (503). The ultrasonic module (503) includes a lithium battery module, an ultrasonic transmitter and an ultrasonic receiver that are electrically connected to each other.

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