Farmland water and fertilizer integrated intelligent irrigation system

Abstract

The utility model relates to a farmland water and fertilizer integrated intelligent irrigation system which comprises a stirring tank and a stirring cleaning device. The stirring cleaning device comprises a stirring shaft, a stirring motor, telescopic cylinders and scrapers, the stirring shaft is rotationally arranged at the bottom of the stirring tank, the end, located on the outer side of the stirring tank, of the stirring shaft is connected with an output shaft of the stirring motor, and the telescopic cylinders are axially arranged on the outer circumferential face of the shaft section, located in the stirring tank, of the stirring shaft at intervals; the tail ends of piston rods of the telescopic cylinders are connected with a scraping plate, and a silica gel scraping piece is arranged on the scraping plate. The farmland water and fertilizer integrated intelligent irrigation system has the beneficial effects that the gap between the scraping plate and the pipe wall of the stirring tank can be adjusted through the telescopic cylinder, and the silica gel scraping sheet on the scraping plate is made of an elastic material, so that the abrasion of the silica gel scraping sheet to the pipe wall of the stirring tank is small.

Description

Technical Field

[0001] This utility model relates to the field of agricultural production equipment technology, and in particular to an intelligent irrigation system integrating water and fertilizer in farmland. Background Technology

[0002] The mixing tank of the existing water and fertilizer integrated irrigation and fertilization machine is prone to accumulating impurities, making it difficult to clean and easily leading to blockage or mixed pollution.

[0003] "Food Machinery and Equipment", edited by Hu Xiaobo and Li Qingming, published by China Agricultural University Press in September 2021, pages 138, 139 and 140 disclose: The mixing tank is composed of a tank body and various accessories welded on it. The tank body used for mixing low viscosity materials is generally a vertical cylindrical container, and its bottom is mostly dish-shaped and hemispherical, or it can be flat-bottomed. The tank body is installed on a foundation or platform by a support. The tank body provides a certain space for the material to complete its mixing process under normal pressure or specified temperature and pressure. The shaft seal is a sealing device between the mixing shaft and the tank body. Whether a shaft seal is needed depends on the pressure state of the mixing container and the requirements for the sealing performance of the material. There are two common types of shaft seals: packing seals and mechanical seals. (1) The packing seal consists of a bushing, packing box, packing ring, gland, clamping bolts, etc. (2) The mechanical seal is a rotating shaft seal with low power consumption, low leakage rate, reliable sealing performance and long service life, and is widely used in various technical fields.

[0004] Chinese patent document CN221816150U discloses a mixing tank for a slurry, with its authorization announcement date being October 11, 2024. Specifically, it discloses a vertically arranged reaction vessel tank with a reaction vessel cover at the top. The interior of the reaction vessel cover has a hollow cylindrical structure, and a rotating shaft is located at its vertical center. The upper end of the shaft passes through the reaction vessel cover and is connected to a first driving assembly that drives its rotation. The bottom of the rotating shaft is rotatably connected to the bottom of the reaction vessel tank. Multiple spiral-shaped first stirring blades are fixed on the rotating shaft. At least three support legs are installed at the bottom of the reaction vessel tank to support it.

[0005] Chinese patent document CN118556488A discloses a pomelo fertigation equipment, including a mixing tank, a top cover on the top of the mixing tank, and a mixing device on the top of the top cover; the mixing device includes a rotating component located on the top of the top cover, a rotating rod on the actuating end of the rotating component, the rotating rod being connected to the top cover by a screw thread nut, and multiple mixing rods arranged in an array on the outer wall of the rotating rod, with two scrapers symmetrically arranged on the outer wall of the rotating rod about the center axis. When it is necessary to clean the inside of the mixing tank, a certain amount of water is pumped into the mixing tank, and then the mixing motor is started to drive the scrapers to scrape and wash the inner wall of the mixing tank. The defects and deficiencies of this pomelo fertigation equipment are: (1) the scrapers clean the inner wall of the mixing tank by contact friction, which will wear down the equipment after long-term use. (2) a large amount of water resources are consumed when cleaning the inside of the mixing tank. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides an intelligent irrigation system for integrated water and fertilizer in farmland, which solves the technical problem that the mixing tank will be worn when the existing integrated water and fertilizer irrigation and fertilization equipment is cleaned by scraper.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] This utility model provides an intelligent irrigation system for farmland integrating water and fertilizer, including a mixing tank and a mixing and cleaning device;

[0011] The mixing and cleaning device includes a mixing shaft, a mixing motor, telescopic cylinders, and scrapers. The mixing shaft is rotatably mounted at the bottom of the mixing tank. One end of the mixing shaft located on the outside of the mixing tank is connected to the output shaft of the mixing motor. Multiple telescopic cylinders are axially spaced on the outer circumferential surface of the shaft section inside the mixing tank. The piston rods of the multiple telescopic cylinders are connected to scrapers, and silicone scrapers are mounted on the scrapers.

[0012] Optionally, it may also include a control unit and a pressure sensor;

[0013] The pressure sensor is installed inside the silicone scraper, and the control unit is connected to the pressure sensor, the telescopic cylinder, and the stirring motor.

[0014] Optionally, a turbidity sensor is installed on the bottom wall inside the mixing tank, and the turbidity sensor is connected to the control host.

[0015] Optionally, it also includes a buffer mechanism, which includes a core, an outer cylinder, and a buffer spring;

[0016] The outer cylinder is fitted around the core. One end of the core is connected to the end of the piston rod of the telescopic cylinder, and the other end of the core is connected to one end of the buffer spring. The other end of the buffer spring is connected to the inner wall of the outer cylinder, and the outer wall of the outer cylinder is connected to the scraper.

[0017] Optionally, it also includes a ring-shaped mounting bracket, a high-pressure nozzle, a water supply pipe, and a high-pressure cleaning pump;

[0018] An annular mounting bracket is provided on the lower surface of the top cover of the mixing tank. Multiple high-pressure nozzles are spaced apart along the circumference of the annular mounting bracket. The inlet of the high-pressure cleaning pump is connected to an external water source, and the outlet of the high-pressure cleaning pump is connected to each high-pressure nozzle through a water supply pipe.

[0019] Optionally, the inner wall of the mixing tank is provided with a nano-coating.

[0020] Optionally, the top of the mixing tank is provided with a top cover, and the top cover is provided with a first inlet and a second inlet;

[0021] The bottom of the mixing tank is equipped with a liquid outlet, which is connected to the main irrigation pipeline.

[0022] Optionally, the telescopic cylinder can be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0023] Optionally, multiple stirring rods are provided on the outer circumferential surface of the shaft section inside the mixing tank, and the multiple stirring rods and multiple telescopic cylinders are staggered in the circumferential direction.

[0024] (III) Beneficial Effects

[0025] The beneficial effects of this utility model are as follows: The intelligent irrigation system for integrated water and fertilizer in farmland includes a mixing tank and a mixing and cleaning device. The mixing and cleaning device includes a mixing shaft, a mixing motor, a telescopic cylinder, and a scraper. The mixing shaft is rotatably mounted at the bottom of the mixing tank. One end of the mixing shaft located on the outside of the mixing tank is connected to the output shaft of the mixing motor. Multiple telescopic cylinders are axially spaced on the outer circumferential surface of the shaft section inside the mixing tank. The piston rods of the multiple telescopic cylinders are connected to the scraper, which is equipped with silicone scrapers. During cleaning, the piston rod of the telescopic cylinder extends and drives the scraper to unfold, so that the silicone scrapers on the scraper contact the pipe wall of the mixing tank. Then, the mixing motor drives the mixing shaft, telescopic cylinder, and scraper to rotate. The scraper drives the silicone scrapers to scrape and wash the pipe wall of the mixing tank. Compared with existing integrated water and fertilizer irrigation and fertilization equipment, the telescopic cylinder can adjust the gap between the scraper and the pipe wall of the mixing tank, and the silicone scrapers on the scraper are made of elastic material. Therefore, the silicone scrapers cause less wear on the pipe wall of the mixing tank when cleaning it. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the internal structure of the mixing tank in Embodiment 1 of the intelligent irrigation system for integrated water and fertilizer in farmland according to this utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of the stirring shaft, telescopic cylinder, and scraper in the process;

[0028] Figure 3 for Figure 1 An enlarged schematic diagram of the mixing tank at point A;

[0029] Figure 4 for Figure 3 A schematic diagram of the internal structure of the buffer mechanism in the diagram;

[0030] Figure 5 This is a schematic diagram of the internal structure of the mixing tank in Embodiment 1 of the intelligent irrigation system for integrated water and fertilizer in farmland according to this utility model;

[0031] Figure 6 for Figure 5 A top view of the annular mounting bracket and high-pressure nozzle.

[0032] [Explanation of Labels in the Attached Image]

[0033] 1: Mixing tank; 2: Mixing shaft; 3: Mixing motor; 4: Telescopic cylinder; 5: Scraper; 6: Silicone scraper; 7: Mixing rod; 8: First inlet; 9: Second inlet; 10: Liquid outlet; 11: Pressure sensor; 12: Buffer mechanism; 13: Core; 14: Outer cylinder; 15: Buffer spring; 16: Annular mounting bracket; 17: High-pressure nozzle; 18: Water supply pipe; 19: Slip ring. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1:

[0036] Reference Figure 1 and Figure 4 This embodiment provides an intelligent irrigation system for farmland integrating water and fertilizer, including a mixing tank 1 and a mixing and cleaning device.

[0037] The stirring and cleaning device includes a stirring shaft 2, a stirring motor 3, a telescopic cylinder 4, and a scraper 5. The stirring shaft 2 is rotatably installed at the bottom of the stirring tank 1. One end of the stirring shaft 2 located on the outside of the stirring tank 1 is connected to the output shaft of the stirring motor 3. Multiple telescopic cylinders 4 are axially spaced on the outer circumferential surface of the shaft section of the stirring shaft 2 located inside the stirring tank 1. The piston rod ends of the multiple telescopic cylinders 4 are connected to the scraper 5, and a silicone scraper 6 is installed on the scraper 5.

[0038] The integrated water and fertilizer intelligent irrigation system for farmland in this embodiment includes a mixing tank 1. The bottom of the mixing tank 1 is equipped with a mixing and cleaning device, which includes a mixing shaft 2, a mixing motor 3, a telescopic cylinder 4, and a scraper 5. The scraper 5 is equipped with a silicone scraper 6. During the cleaning process, the piston rod of the telescopic cylinder 4 extends to drive the scraper 5 to approach the pipe wall of the mixing tank 1, thereby making the silicone scraper 6 on the scraper 5 contact the pipe wall. Then, the mixing motor 3 drives the mixing shaft 2, the telescopic cylinder 4, and the scraper 5 to rotate. The scraper 5 drives the silicone scraper 6 to scrape and wash the pipe wall of the mixing tank 1. Compared with existing integrated water and fertilizer irrigation and fertilization equipment, the telescopic cylinder 4 can adjust the gap between the scraper 5 and the pipe wall of the mixing tank 1, and the silicone scraper 6 on the scraper 5 is made of elastic material, so the silicone scraper 6 causes less wear on the pipe wall of the mixing tank 1.

[0039] Furthermore, the multiple telescopic cylinders 4 are divided into at least two groups, with each group of telescopic cylinders 4 arranged in the same circumferential position relative to the stirring shaft 2 and connected to the same scraper 5. For example, there are two scrapers 5, and the telescopic cylinders 4 are divided into two groups. One group of telescopic cylinders 4 is arranged in the same circumferential position relative to the stirring shaft 2 and connected to one scraper 5; the other group of telescopic cylinders 4 is arranged in another circumferential position relative to the stirring shaft 2 and connected to another scraper 5. Preferably, the two groups of telescopic cylinders 4 are arranged opposite to each other.

[0040] Preferably, a plurality of stirring rods 7 are arranged on the outer circumferential surface of the shaft section inside the mixing tank 1, and the plurality of stirring rods 7 and the plurality of telescopic cylinders 4 are staggered in the circumferential direction. The purpose of this arrangement is to prevent the stirring rods 7 from obstructing the telescopic cylinders 4 from extending and retracting.

[0041] Furthermore, the top of the mixing tank 1 is provided with a top cover, on which a first inlet 8 and a second inlet 9 are provided. During irrigation, the irrigation water enters the mixing tank 1 through the first inlet 8, and the fertilizer mother liquor enters the mixing tank 1 through the second inlet 9. Then, the stirring motor 3 drives the stirring shaft 2 to stir and mix the irrigation water and the fertilizer mother liquor.

[0042] Preferably, the integrated water and fertilizer intelligent irrigation system for farmland in this embodiment also includes a main irrigation pipeline. A liquid outlet 10 is provided at the bottom of the mixing tank 1, and the liquid outlet 10 is connected to the main irrigation pipeline.

[0043] In addition, the main irrigation pipeline is equipped with union ball valves in sections, and each section of the main irrigation pipeline is connected to a drain outlet and a backflushing outlet in sequence. It should be noted that the purpose of installing union ball valves in sections of the main irrigation pipeline is to isolate the pipeline in the event of a partial blockage, then introduce high-pressure water into the backflushing outlet for backflushing and cleaning, and finally discharge the water through the drain outlet.

[0044] Furthermore, a nano-coating is provided on the inner wall of the mixing tank 1. The purpose of providing the nano-coating is to improve the wear resistance and corrosion resistance of the mixing tank 1. For example, the nano-coating can be a nano-ceramic layer plus a polytetrafluoroethylene (PTFE) superhydrophobic layer.

[0045] Preferably, the telescopic cylinder 4 is an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. It should be noted that a slip ring 19 is provided at the bottom connection between the stirring shaft 2 and the stirring tank 1. The slip ring 19 is an electric slip ring, a pneumatic-electric hybrid slip ring, or an electro-hydraulic hybrid slip ring. The slip ring 19 is responsible for connecting and transmitting energy and signals to the electrical components of the telescopic cylinder 4, preventing pipes or wiring from becoming entangled when the telescopic cylinder rotates 360 degrees.

[0046] Please see Figure 3 and Figure 4 The integrated water and fertilizer intelligent irrigation system for farmland also includes a control host and a pressure sensor 11. The control host is located on the outside of the mixing tank 1, and the pressure sensor 11 is located inside the silicone scraper 6. The control host is connected to the pressure sensor 11, the telescopic cylinder 4, and the mixing motor 3, respectively.

[0047] It should be noted that when the telescopic cylinder 4 is an electric cylinder and the slip ring 19 is an electric slip ring, the control host connects the pressure sensor 11 and the electric cylinder through a physical circuit and the electric slip ring, and controls the action of the electric cylinder based on the pressure data monitored by the pressure sensor 11. When the telescopic cylinder 4 is a pneumatic cylinder and the slip ring 19 is a pneumatic-electric hybrid slip ring, on the one hand, the control host connects the pressure sensor 11 through a physical circuit and the pneumatic-electric hybrid slip ring, and the pressure sensor 11 sends the monitored pressure data to the control host; on the other hand, the control host connects to an external air source device through a physical circuit or wireless communication, and the air source device is connected to the cylinder through an air supply pipeline and the pneumatic-electric hybrid slip ring, thereby controlling the action of the cylinder by controlling the supply of compressed air to the cylinder by controlling the air source device. When the telescopic cylinder 4 is a hydraulic cylinder and the slip ring 19 is an electro-hydraulic hybrid slip ring, on the one hand, the control host connects to the pressure sensor 11 through a physical line and the electro-hydraulic hybrid slip ring, and the pressure sensor 11 sends the monitored pressure data to the control host; on the other hand, the control host connects to an external hydraulic pump station through a physical line or wireless communication, and the hydraulic pump station connects the rod chamber and rodless chamber of the hydraulic cylinder through a pipeline and the electro-hydraulic hybrid slip ring, thereby controlling the action of the hydraulic cylinder by controlling the flow of hydraulic oil supplied to the hydraulic cylinder by the hydraulic pump station.

[0048] Preferably, the pressure sensor 11 is a piezoelectric ceramic sensor. The piezoelectric ceramic sensor monitors the contact pressure in real time, and the control host controls the movement of the telescopic cylinder 4 according to the contact pressure to maintain the contact pressure at 5-10N. This ensures that the silicone scraper 6 is in close contact with the pipe wall of the mixing tank 1, while avoiding excessive contact pressure that could cause severe wear on the pipe wall.

[0049] Furthermore, the integrated water and fertilizer intelligent irrigation system for farmland also includes a buffer mechanism, which comprises a core 13, an outer cylinder 14, and a buffer spring 15. The outer cylinder 14 is fitted around the core 13. One end of the core 13 is connected to the end of the piston rod of the telescopic cylinder 4, and the other end of the core 13 is connected to one end of the buffer spring 15. The other end of the buffer spring 15 is connected to the inner wall of the outer cylinder 14, and the outer wall of the outer cylinder 14 is connected to the scraper 5. It should be noted that when the scraper 5 contacts the tank wall, the buffer spring 15 is compressed to provide elastic cushioning to prevent rigid collision damage.

[0050] Furthermore, a turbidity sensor is installed on the bottom wall inside the mixing tank 1, and the turbidity sensor is connected to the control host. In cleaning mode, the turbidity sensor monitors the turbidity of the liquid inside the mixing tank 1, and the control host determines whether to start the telescopic cylinder 4 and the stirring motor 3 for cleaning based on the turbidity information.

[0051] The cleaning process of the integrated water and fertilizer intelligent irrigation system for farmland in this embodiment is as follows:

[0052] Step S1: In the cleaning mode, the cleaning water enters the mixing tank 1 through the first inlet 8. The turbidity sensor monitors the turbidity of the liquid inside the mixing tank 1 and sends the turbidity data to the control host. The control host determines whether the turbidity data is greater than the first preset value. If so, the control host controls the telescopic cylinder 4 to extend.

[0053] In step S2, the telescopic cylinder 4 drives the scraper 5 to approach the pipe wall of the mixing tank 1, thereby making the silicone scraper 6 on the scraper 5 contact the pipe wall; at the same time, the buffer mechanism provides elastic cushioning for the scraper 5.

[0054] Step S3: Pressure sensor 11 monitors the contact pressure in real time and sends the pressure data to the control host. The control host determines whether the pressure data is greater than the second preset value. If so, the control host controls the telescopic cylinder 4 to stop extending.

[0055] Step S4: The host controller starts the stirring motor 3, which then drives the stirring shaft 2, telescopic cylinder 4 and scraper 5 to rotate. The scraper 5 drives the silicone scraper 6 to scrape and wash the pipe wall of the mixing tank 1.

[0056] Step S5: After cleaning is completed, the main control unit first controls the stirring motor 3 to stop working, and then controls the telescopic cylinder 4 to reset.

[0057] Example 2:

[0058] Reference Figure 5 and Figure 6 This embodiment provides another intelligent irrigation system for integrated water and fertilizer in farmland. Unlike embodiment 1, the intelligent irrigation system for integrated water and fertilizer in farmland in this embodiment also includes a ring mounting frame 16, a high-pressure nozzle 17, a water supply pipe 18, and a high-pressure cleaning pump.

[0059] An annular mounting bracket 16 is provided on the lower surface of the top cover of the mixing tank 1, and multiple high-pressure nozzles 17 are arranged at intervals along the circumference of the annular mounting bracket 16. The inlet end of the high-pressure cleaning pump is connected to an external water source, and the outlet end of the high-pressure cleaning pump is connected to each high-pressure nozzle 17 through a water supply pipe 18.

[0060] Preferably, the angle between the orientation of the high-pressure nozzle 17 and the vertical direction is 3-20°.

[0061] In cleaning mode, the high-pressure cleaning pump provides high-pressure pulsed water flow to the high-pressure nozzle 17, which in turn sprays high-pressure pulsed water onto the inner wall of the mixing tank 1. This not only enhances the cleaning effect but also saves water resources.

[0062] The remaining parts that are the same as in Example 1 will not be repeated here.

[0063] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0065] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A smart irrigation system integrating water and fertilizer for farmland, characterized in that: Includes a mixing tank (1) and a mixing and cleaning device; The stirring and cleaning device includes a stirring shaft (2), a stirring motor (3), a telescopic cylinder (4), and a scraper (5). The stirring shaft (2) is rotatably installed at the bottom of the stirring tank (1). One end of the stirring shaft (2) located outside the stirring tank (1) is connected to the output shaft of the stirring motor (3). Multiple telescopic cylinders (4) are axially spaced on the outer circumferential surface of the shaft section of the stirring shaft (2) located inside the stirring tank (1). The piston rod ends of the multiple telescopic cylinders (4) are connected to the scraper (5). A silicone scraper (6) is installed on the scraper (5).

2. The farmland water and fertilizer integrated intelligent irrigation system according to claim 1, characterized in that: It also includes a control unit and a pressure sensor (11); The pressure sensor (11) is installed inside the silicone scraper (6), and the control host is connected to the pressure sensor (11), the telescopic cylinder (4) and the stirring motor (3) respectively.

3. The intelligent irrigation system for integrated water and fertilizer management in farmland as described in claim 2, characterized in that: A turbidity sensor is installed on the bottom wall inside the mixing tank (1), and the turbidity sensor is connected to the control host.

4. The intelligent irrigation system for integrated water and fertilizer management in farmland as described in claim 1, characterized in that: It also includes a buffer mechanism, which includes a core (13), an outer cylinder (14), and a buffer spring (15); The outer cylinder (14) is fitted around the core (13). One end of the core (13) is connected to the end of the piston rod of the telescopic cylinder (4). The other end of the core (13) is connected to one end of the buffer spring (15). The other end of the buffer spring (15) is connected to the inner wall of the outer cylinder (14). The outer wall of the outer cylinder (14) is connected to the scraper (5).

5. The farmland water and fertilizer integrated intelligent irrigation system according to claim 1, characterized in that: It also includes a ring mounting bracket (16), a high-pressure nozzle (17), a water supply pipe (18), and a high-pressure cleaning pump; An annular mounting bracket (16) is provided on the lower surface of the top cover of the mixing tank (1). Multiple high-pressure nozzles (17) are provided on the annular mounting bracket (16) at intervals along the circumference. The inlet end of the high-pressure cleaning pump is connected to an external water source, and the outlet end of the high-pressure cleaning pump is connected to each high-pressure nozzle (17) through a water supply pipe (18).

6. The intelligent irrigation system for integrated water and fertilizer management in farmland as described in claim 1, characterized in that: The inner wall of the mixing tank (1) is coated with a nano-coating.

7. The farmland water and fertilizer integrated intelligent irrigation system according to claim 1, characterized in that: The top of the mixing tank (1) is provided with a top cover, and the top cover is provided with a first inlet (8) and a second inlet (9); The bottom of the mixing tank (1) is provided with a liquid outlet (10), which is connected to the irrigation main pipeline. 8.The farmland water and fertilizer integrated intelligent irrigation system of claim 1, wherein: The telescopic cylinder (4) is an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. 9.The farmland water and fertilizer integrated intelligent irrigation system of claim 1, wherein: Multiple stirring rods (7) are provided on the outer circumferential surface of the shaft section inside the mixing tank (1) of the stirring shaft (2), and the multiple stirring rods (7) and multiple telescopic cylinders (4) are arranged in a staggered manner in the circumferential direction.

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