Water and fertilizer integrated irrigation equipment

Abstract

The application relates to the technical field of water and fertilizer irrigation, and discloses a water and fertilizer integrated irrigation equipment, which comprises a central processing cylinder, an internal filter cavity and an internal mixing cavity; a water and fertilizer conveying pipeline, which comprises a water inlet pipe connected with the bottom of the filter cavity and an external water source; a transfer water pipe connected with the filter cavity and the bottom of the mixing cavity; and a water outlet pipe connected with the mixing cavity and an external irrigation equipment; the primary rotating filter assembly and the secondary rotating filter assembly are connected through an automatic rotating switching filter station, and combined with a reverse flushing function, so that the filter screen is self-cleaned, impurities are collected and returned to the water inlet pipe for re-filtering, the frequency of manual cleaning is reduced, system maintenance cost and downtime are significantly reduced, and the long-term stable operation of the irrigation system is ensured.

Description

Technical Field

[0001] This invention relates to the field of water and fertilizer irrigation technology, specifically to an integrated water and fertilizer irrigation device. Background Technology

[0002] Integrated water and fertilizer management is a crucial technology in modern agriculture for achieving precision irrigation and efficient fertilization. By mixing irrigation water with soluble fertilizers in a specific ratio and delivering it directly to the crop root zone, it significantly improves water and fertilizer utilization efficiency. This technology relies on complex water and fertilizer irrigation equipment, whose core components typically include a water source filtration system, a water and fertilizer mixing device, a delivery pipeline network, and terminal irrigation equipment (such as drip irrigation heads or micro-sprinklers). The water source filtration system is a key component ensuring stable equipment operation, primarily responsible for intercepting impurities such as sediment, suspended particles, and microorganisms to prevent clogging of drip irrigation pipes or sprinklers. However, existing water and fertilizer irrigation equipment still has significant shortcomings in filtration system design, particularly in terms of maintenance cost control, where it faces numerous challenges.

[0003] Traditional filtration systems often employ fixed screens or mechanical filters. While these can intercept impurities to some extent, the filter media is prone to clogging due to impurity accumulation over long-term operation, leading to increased water flow resistance and decreased irrigation efficiency. To maintain normal system operation, operators must periodically disassemble and clean the filter screens manually. This process is not only time-consuming and labor-intensive but also requires a high level of technical experience. In large-scale farmland applications, frequent manual maintenance significantly increases costs, becoming a major factor hindering the widespread adoption of integrated water and fertilizer technology. Furthermore, while existing automatic backwashing filtration devices can alleviate the pressure of manual maintenance, their operation relies on an additional high-pressure flushing water source, consuming large amounts of water resources and potentially causing secondary pollution due to improper wastewater treatment. Some equipment attempts to introduce chemical agents to assist in cleaning, but chemical residues may corrode pipes or affect the soil environment, further complicating maintenance. More importantly, the existing filtration system lacks sufficient coordination with the mixing unit, making it difficult to completely remove filtered impurities. Residues may enter the mixing chamber, affecting the uniformity of water and fertilizer mixing and even causing scaling or corrosion inside the equipment. These technical deficiencies have led to multiple problems in the practical application of existing water and fertilizer irrigation equipment, such as high maintenance costs, low operating efficiency, and poor environmental adaptability, which urgently need to be overcome through technological innovation. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated water and fertilizer irrigation device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an integrated water and fertilizer irrigation device, comprising:

[0006] The central processing cylinder has a filter chamber and a mixing chamber inside;

[0007] Water and fertilizer delivery pipelines, including:

[0008] The inlet pipe connects the bottom of the filter chamber to the external water source;

[0009] A transfer water pipe connecting the bottom of the filter chamber and the mixing chamber;

[0010] The water outlet pipe connects the mixing chamber to the external irrigation equipment;

[0011] The self-cleaning filter unit includes:

[0012] A primary rotary filter assembly is rotatably mounted on the side wall of the filter chamber. Multiple first filtration stations are evenly distributed around its circumference. Each first filtration station is equipped with a first filter screen. The water outlet of the inlet pipe is directed to the first filtration station of one of the working stations for water inlet filtration. A diversion branch pipe driven by a delivery pump is provided on the intermediate water pipe. The water outlet of the diversion branch pipe points to the first filtration station of another standby station, which is used to reverse flush the filter screen of that station to achieve self-cleaning.

[0013] The two-stage rotary filter assembly is rotatably mounted on the side wall of the mixing chamber. Multiple second filtration stations are evenly distributed around its circumference. Each second filtration station is equipped with a second filter screen. The inlet end of the outlet pipe is directly connected to the second filtration station of one of the working stations for fine filtration of the water. The outlet end of the transfer water pipe is directly connected to the second filtration station of another standby station. The filter screen of this station is flushed in reverse by the pressure of the main water flow to achieve self-cleaning.

[0014] A mixing unit is located inside the mixing chamber and is used to mix the water-fertilizer solution.

[0015] According to the above technical solution, it also includes a differential pressure sensing control system, comprising:

[0016] The first differential pressure sensor has a first pressure end threadedly connected to the pressure measuring hole on the wall of the inlet pipe and a second pressure end threadedly connected to the pressure measuring hole on the wall of the transfer pipe, and is used to detect the pressure difference between the inlet pipe and the transfer pipe.

[0017] The second differential pressure sensor has a first pressure end flange connected to the pressure measuring hole on the wall of the intermediate water pipe and a second pressure end flange connected to the pressure measuring hole on the wall of the outlet water pipe, and is used to detect the pressure difference between the intermediate water pipe and the outlet water pipe.

[0018] The output end of the first servo motor is fixedly connected to the first rotating shaft of the first-stage rotary filter assembly;

[0019] The output end of the second servo motor is fixedly connected to the second rotating shaft of the secondary rotary filter assembly.

[0020] The controller, fixed to the outer wall of the central processing cylinder, receives the differential pressure signal. When the differential pressure continues to exceed the threshold, it controls the corresponding servo motor to rotate and switch to the next standby filtration station.

[0021] According to the above technical solution, it also includes a rainwater collection tank located at the top of the central processing cylinder. The lowest point of the bottom of the rainwater collection tank is connected to the inlet of the water inlet pipe through a rainwater pipe, and the top of the rainwater collection tank is covered with a coarse filter screen.

[0022] According to the above technical solution, the central processing cylinder is composed of a first processing cylinder and a second processing cylinder connected vertically in a regular hexagonal shape. A filtration chamber is formed inside the first processing cylinder, and a mixing chamber is formed inside the second processing cylinder. The side length of the first processing cylinder is smaller than the side length of the second processing cylinder, and a feeding port is provided on the side wall of the second processing cylinder.

[0023] According to the above technical solution, the primary rotary filter assembly includes:

[0024] The first filter plate is fixed at its center on the first rotating shaft;

[0025] The first filtration station is the first filter port opened on the first filter plate;

[0026] The first filter screen is embedded in the first filter port;

[0027] A slag discharge port is provided on the side wall of the filter chamber at the position corresponding to the first filtration station in the spare position;

[0028] The slag discharge port is connected to the slag return channel;

[0029] The outlet of the slag return channel is connected to the inlet of the water inlet pipe.

[0030] According to the above technical solution, the secondary rotary filter assembly includes:

[0031] The second filter plate is fixed at its center on the second rotating shaft;

[0032] The second filtration station is the second filter port opened on the second filter plate;

[0033] The second filter screen is embedded in the second filter port;

[0034] A sedimentation chamber is provided on the side wall of the mixing chamber corresponding to the second filter plate;

[0035] The bottom of the sedimentation chamber corresponds to and is connected to the second filter port.

[0036] The top of the sedimentation chamber is connected to the upper part of the mixing chamber.

[0037] According to the above technical solution, a removable sedimentation box is installed inside the sedimentation chamber, and the removable sedimentation box includes:

[0038] The box body is divided into an upper chamber and a lower chamber by horizontally arranged partition filter plates, and the top is provided with a clearance groove for the corresponding transfer water pipe;

[0039] The movable side panel is movably embedded in one side of the lower chamber and can be detachably sealed through a magnetic suction assembly;

[0040] An inlet port is provided on the movable side plate and is connected to the second filtration station;

[0041] A liquid outlet is located on the upper side wall of the box and communicates with the mixing chamber;

[0042] The handles are symmetrically fixed to the top of the box.

[0043] According to the above technical solution, the mixing unit includes:

[0044] A spiral lifting shaft is vertically set in the center of the mixing chamber and driven by a drive motor, with spiral blades fixed on its surface;

[0045] Several rotating stirring rods are arranged around the spiral lifting shaft. The upper and lower ends of each rotating stirring rod are movably connected to the inner wall of the mixing chamber through an upper movable ring and a lower movable ring, respectively.

[0046] The planetary gear transmission assembly has a sun gear fixed to the top of the spiral lifting shaft, planet gears fixed to the top of their respective rotating stirring rods, and a gear ring fixed to the inner wall of the central processing cylinder. The planet gears are meshed between the sun gear and the gear ring.

[0047] According to the above technical solution, the inlet pipe and the outlet pipe are arranged side by side on the adjacent side wall of the second treatment cylinder. The section of the inlet pipe located outside the equipment is spirally coiled around the outer wall of the outlet pipe to form a spiral heat exchange section. The spiral heat exchange section is covered with a phase change material layer and is together installed inside the insulation cylinder. An electric heating plate and a temperature sensor are installed inside the insulation cylinder.

[0048] According to the above technical solution, the bottom of the slag discharge return channel is provided with a downwardly inclined slag collection trough, and a sealing baffle is embedded and installed on the outer wall of the slag collection trough by quick-release bolts. The sealing baffle is flush with the outer wall of the central processing cylinder.

[0049] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0050] (1) Self-cleaning filtration system reduces maintenance costs

[0051] The primary and secondary rotary filter components automatically switch filtration positions by rotating, and combined with the reverse flushing function, the filter screen is self-cleaned. Impurities are collected and returned to the inlet pipe for re-filtration, reducing the frequency of manual cleaning, significantly reducing system maintenance costs and downtime, and ensuring the long-term stable operation of the irrigation system.

[0052] (2) Two-stage filtration water-saving design optimizes water resource utilization

[0053] The backwash wastewater from the first filtration station is collected and settled through the slag return channel, and can then be returned to the inlet of the water pipe to participate in the filtration cycle again, achieving efficient recycling of the wash water. The self-cleaning of the second filtration station relies entirely on the pressure impact of the main water flow in the transfer water pipe, without the need for an additional wash water source. This significantly reduces the consumption of fresh water during the wash process, while also reducing the energy consumption of the water pump and improving the overall water resource utilization efficiency of the system.

[0054] (3) Intelligent differential pressure control improves operating efficiency

[0055] The differential pressure sensing control system monitors the pressure difference between the filtration chamber and the mixing chamber in real time and automatically switches the filtration station through the servo motor. When a risk of clogging is detected, the system can quickly respond and switch to the backup filtration station to avoid water flow interruption caused by filter clogging, thereby improving the operating efficiency and reliability of the equipment.

[0056] (4) Prioritize rainwater utilization and optimize water resource management

[0057] After the rainwater collection trough intercepts large particles of impurities through a coarse filter screen, it prioritizes guiding rainwater into the inlet pipe. When the rainwater storage reaches a set threshold, it automatically shuts off the external water source valve, maximizing the use of natural precipitation and reducing dependence on groundwater or tap water. It is especially suitable for areas with limited water resources and improves the sustainability of water resource utilization.

[0058] (5) The high-efficiency mixing unit ensures uniformity of water and fertilizer.

[0059] The mixing unit achieves vertical circulation and multi-directional mixing of the solution through the synergistic action of the spiral lifting shaft and the planetary gear transmission group. The revolution and rotation of the self-rotating stirring rod thoroughly crushes the fertilizer particles, avoids sedimentation and clumping, ensures uniform water and fertilizer mixing, and improves fertilizer solubility and crop absorption efficiency.

[0060] (6) The heat recovery system stabilizes the irrigation water temperature

[0061] The spiral heat exchange section of the inlet and outlet pipes is combined with a phase change material layer to preheat the incoming water using waste heat from irrigation, preventing fertilizer crystallization caused by low temperatures. The electric heating plate inside the insulation cylinder is linked with a temperature sensor to dynamically adjust the water temperature to a suitable range, ensuring irrigation effectiveness in winter or low-temperature environments and extending the equipment's applicable season.

[0062] (7) Modular design increases maintenance convenience

[0063] The slag collection trough and sealing baffle of the slag return channel are connected by quick-release bolts, which facilitates regular cleaning and replacement. Both the sedimentation box and the slag collection trough support quick disassembly. A single person can complete the maintenance of the core components within 5 minutes, which greatly reduces the operation and maintenance costs. The split structure of the central treatment cylinder (first treatment cylinder and second treatment cylinder) supports flexible expansion. At the same time, the design of the feeding port facilitates the addition of fertilizer, enabling the equipment to adapt to the irrigation needs of farmland of different sizes and enhancing the versatility of the system. Attached Figure Description

[0064] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0065] Figure 1 This is a first perspective view of the present invention;

[0066] Figure 2 This is a second perspective view of the present invention;

[0067] Figure 3 This is a third perspective view of the present invention;

[0068] Figure 4 This is a fourth perspective schematic diagram of the present invention;

[0069] Figure 5 This is a first partial three-dimensional schematic diagram of the present invention;

[0070] Figure 6 This is a second partial perspective view of the present invention;

[0071] Figure 7 This is a third partial perspective view of the present invention;

[0072] Figure 8 This is a fourth partial perspective view of the present invention;

[0073] Figure 9 This is a fifth partial perspective view of the present invention;

[0074] Figure 10 This is a sixth partial perspective view of the present invention;

[0075] Figure 11 This is a third-dimensional schematic diagram of the seventh part of the present invention;

[0076] Figure 12 This is the eighth partial perspective view of the present invention;

[0077] Figure 13 This is a third-dimensional schematic diagram of the ninth part of the present invention;

[0078] Figure 14 This is a three-dimensional schematic diagram of the tenth part of the present invention;

[0079] In the diagram: 100-Central processing cylinder, 101-Filter chamber, 102-Mixing chamber, 200-Water and fertilizer delivery pipeline, 201-Inlet pipe, 202-Transfer water pipe, 203-Outlet pipe, 300-Self-cleaning filter unit, 301-First filter screen, 302-Branch pipe, 303-Second filter screen, 304-Delivery pump, 400-Mixing unit, 500-Differential pressure sensing control system, 501-First differential pressure sensor, 5 02-Second differential pressure sensor, 503-First servo motor, 504-Second servo motor, 505-Controller, 600-Rainwater collection tank, 601-Rainwater pipe, 602-Coarse filter screen, 700-First processing cylinder, 701-Second processing cylinder, 702-Feeding port, 800-First rotating shaft, 801-First filter plate, 802-First filter port, 803-Slag discharge port, 804-Slag discharge return channel, 90 0-Second rotating shaft, 901-Second filter plate, 902-Second filter port, 903-Sedimentation chamber, 1000-Removable sedimentation box, 1001-Box body, 1002-Divider filter plate, 1003-Upper chamber, 1004-Lower chamber, 1005-Modible side plate, 1006-Magnetic suction assembly, 1007-Liquid inlet, 1008-Liquid outlet, 1009-Handle, 1100-Drive motor, 1101-Spiral Lifting shaft, 1102-spiral blade, 1103-rotating stirring rod, 1104-planetary gear transmission assembly, 1105-sun gear, 1106-planetary gear, 1107-gear ring, 1200-spiral heat exchange section, 1201-phase change material layer, 1202-insulation cylinder, 1203-electric heating plate, 1204-temperature sensor, 1300-slag collection trough, 1301-quick release bolt, 1302-sealing baffle. Detailed Implementation

[0080] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0081] Please see Figure 1-14 The present invention provides a technical solution: an integrated water and fertilizer irrigation device, comprising:

[0082] The central processing cylinder 100 has a filter chamber 101 and a mixing chamber 102 inside;

[0083] Water and fertilizer delivery pipeline 200, including:

[0084] A water inlet pipe 201 connects the bottom of the filter chamber 101 to an external water source;

[0085] A transfer water pipe 202 connects the bottom of the filter chamber 101 and the mixing chamber 102;

[0086] A water outlet pipe 203 connecting the mixing chamber 102 and the external irrigation equipment;

[0087] The self-cleaning filter unit 300 includes:

[0088] A primary rotary filter assembly is rotatably mounted on the side wall of the filter chamber 101. Multiple first filtration stations are evenly distributed around its circumference. Each first filtration station is equipped with a first filter screen 301. The water outlet of the inlet pipe 201 is directly facing the first filtration station of one of the working stations for water inlet filtration. A diversion branch pipe 302 driven by a delivery pump 304 is provided on the transfer water pipe 202. The water outlet of the diversion branch pipe 302 points to another standby first filtration station for reverse flushing of the filter screen of that station to achieve self-cleaning.

[0089] The secondary rotary filter assembly is rotatably mounted on the side wall of the mixing chamber 102. Multiple second filtration stations are evenly distributed around its circumference. Each second filtration station is equipped with a second filter screen 303. The inlet end of the outlet pipe 203 is directly connected to the second filtration station of one of the working stations for fine filtration of the outgoing water. The outlet end of the transfer water pipe 202 is directly connected to the second filtration station of another standby station. The filter screen of this station is flushed in reverse by the pressure of the main water flow to achieve self-cleaning.

[0090] A mixing unit 400 is disposed in the mixing chamber 102 and is used to mix the water-fertilizer solution;

[0091] Specifically, it also includes a differential pressure sensing control system 500, comprising:

[0092] The first differential pressure sensor 501 has a first pressure end threadedly connected to the pressure measuring hole in the wall of the inlet pipe 201 and a second pressure end threadedly connected to the pressure measuring hole in the wall of the transfer pipe 202, and is used to detect the pressure difference between the inlet pipe 201 and the transfer pipe 202.

[0093] The second differential pressure sensor 502 has a first pressure end flange connected to the pressure measuring hole on the pipe wall of the transfer water pipe 202 and a second pressure end flange connected to the pressure measuring hole on the pipe wall of the outlet water pipe 203, and is used to detect the pressure difference between the transfer water pipe 202 and the outlet water pipe 203.

[0094] The output end of the first servo motor 503 is fixedly connected to the first rotating shaft 800 of the first-stage rotary filter assembly.

[0095] The output end of the second servo motor 504 is fixedly connected to the second rotating shaft 900 of the secondary rotating filter assembly.

[0096] The controller 505, fixed to the outer wall of the central processing cylinder 100, receives the differential pressure signal. When the differential pressure continues to exceed the threshold, it controls the corresponding servo motor to rotate and switch to the next standby filtration station.

[0097] The differential pressure sensing control system 500 is a component of this integrated water and fertilizer irrigation equipment that enables automatic monitoring and intelligent control. Its main function is to sense the real-time operating status of the filtration system and automatically trigger the switching of the filtration station when the filter screen becomes clogged, increasing water flow resistance. This ensures the continuous and stable operation of the entire irrigation system. The first differential pressure sensor 501 is threaded to the pressure measuring hole on the wall of the inlet pipe 201 via its first pressure end, and simultaneously threaded to the pressure measuring hole on the wall of the transfer pipe 202 via its second pressure end. This is used to continuously monitor the pressure difference between the inlet pipe 201 and the transfer pipe 202. This pressure difference directly reflects the working status of the primary rotating filter assembly located in the filter chamber 101. When… When the first filter screen 301 on the primary rotary filter assembly gradually becomes clogged due to the accumulation of impurities, the resistance to water flow increases, the pressure on the inlet pipe 201 side rises, while the pressure on the transfer pipe 202 side relatively decreases, and the pressure difference between the two increases accordingly. The first differential pressure sensor 501 can accurately capture this change and transmit the differential pressure signal to the controller 505. Similarly, the second differential pressure sensor 502 is used to detect the pressure difference between the transfer pipe 202 and the outlet pipe 203. This differential pressure value characterizes the operating status of the secondary rotary filter assembly in the mixing chamber 102. The controller 505 is fixed to the outer wall of the central processing cylinder 100 and receives differential pressure signals from the first differential pressure sensor 501 and the second differential pressure sensor 502. When any differential pressure value continuously exceeds a preset threshold, the controller 505 determines that the corresponding filtration station is blocked and immediately issues a control command to start the corresponding servo motor to perform a station switching action. When the first differential pressure sensor 501 detects an abnormal differential pressure, the controller 505 drives the first servo motor 503 to operate. The output of the first servo motor 503 drives the first rotating shaft 800 of the first-stage rotating filter assembly to rotate, causing the entire first-stage rotating filter assembly to rotate. This moves the first filter station that was originally in the working position away and simultaneously moves a self-cleaning standby first filter station into the working position, thereby restoring the normal filtration path. Similarly, when the second differential pressure sensor 502 feeds back an abnormal differential pressure value, the controller 505 determines that the corresponding filtration station is blocked and immediately issues a control command to start the corresponding servo motor to perform a station switching action. When the differential pressure exceeds the normal range, the controller 505 controls the second servo motor 504 to start. The output of the second servo motor 504 drives the second rotating shaft 900 of the secondary rotating filter component to rotate, causing the secondary rotating filter component to switch to a new second filtration position. This ensures that the fine filtration process of the effluent is not affected by blockage. The differential pressure sensing control system 500 monitors the pressure status of the two filtration stages through two differential pressure sensors and uses two servo motors to precisely drive the corresponding rotating filter components to switch positions. This achieves automatic identification and response to filtration system blockage problems, effectively avoiding flow drop or system shutdown caused by filter blockage, and significantly improving the reliability and automation level of equipment operation.

[0098] Specifically, it also includes a rainwater collection tank 600 located at the top of the central processing cylinder 100. The lowest point of the bottom of the rainwater collection tank 600 is connected to the inlet of the water inlet pipe 201 through a rainwater pipe 601. The top of the rainwater collection tank 600 is covered with a coarse filter screen 602.

[0099] The rainwater collection trough 600 is an important auxiliary structure in this integrated water and fertilizer irrigation equipment, used to expand the ways of water source utilization. It is located at the top of the central treatment cylinder 100, making full use of the overall space layout of the equipment to achieve effective recovery and reuse of natural rainfall. The overall structure of the rainwater collection trough 600 forms a water collection area at the highest point of the equipment, and its top is covered with a coarse filter screen 602. The function of the coarse filter screen 602 is to intercept larger debris such as leaves, branches, and dust clumps that fall with the rainwater, preventing these impurities from directly entering the collection system, thereby reducing the burden on subsequent filtration units and preventing blockage at the inlet of the water inlet pipe 201. After rainwater falls into the rainwater collection trough 600, it undergoes preliminary filtration by the coarse filter screen 602 and accumulates at the bottom of the trough. The bottom is designed with a clearly defined lowest point, where rainwater naturally collects under gravity and is guided by a rainwater pipe 601 connected there. The other end of the rainwater pipe 601 is connected to the inlet of the inlet pipe 201, allowing the collected rainwater to flow directly into the main water supply path and enter the filter chamber 101 for further treatment along with the external water source. A one-way valve can be installed on the rainwater pipe 601 to prevent backflow. The rainwater collection tank 600 not only realizes the resource utilization of natural precipitation and reduces dependence on external water supply, but also ensures that the collected rainwater can be safely and smoothly integrated into the entire water and fertilizer treatment process through the pre-positioned coarse filter screen 602 and reasonable flow guidance design. It has the advantages of water and energy saving and environmental adaptability, which helps to improve the applicability of different climatic conditions or water-scarce areas.

[0100] Specifically, the central processing cylinder 100 is composed of a first processing cylinder 700 and a second processing cylinder 701 connected vertically. The first processing cylinder 700 forms a filter chamber 101 inside, and the second processing cylinder 701 forms a mixing chamber 102 inside. The side length of the first processing cylinder 700 is smaller than the side length of the second processing cylinder 701. The side wall of the second processing cylinder 701 is provided with a feeding port 702.

[0101] The central processing cylinder 100 adopts a modular design concept, consisting of two parts: a first processing cylinder 700 and a second processing cylinder 701. Both parts have a regular hexagonal cross-section and are connected vertically to form the complete central processing cylinder 100. This geometric configuration not only enhances the stability of the structure but also facilitates the layout of internal components and the orderly connection of external pipelines. The first processing cylinder 700 is located at the top, and its internal space forms a filter chamber 101 to accommodate the primary rotating filter component and related flow channel structure in the self-cleaning filter unit 300. Since the filtration process mainly involves the preliminary purification of water flow, the space volume requirement is relatively small. Therefore, the side length of the regular hexagon of the first processing cylinder 700 is designed to be small, which meets functional requirements and avoids material waste. The second processing cylinder 701 is located at the bottom, and its internal space forms a mixing chamber 10. 2. The mixing chamber 701 is used to house the mixing unit 400 and the secondary rotary filter assembly. The mixing process requires a larger volume to ensure that the water and fertilizer are fully mixed and to leave a buffer space. Therefore, the side length of the regular hexagon of the second processing cylinder 701 is larger than that of the first processing cylinder 700. This stepped structure design, which is smaller at the top and larger at the bottom, conforms to the logical order of "filtering first and then mixing" in the process flow. On the other hand, it also optimizes the distribution of the center of gravity of the equipment and improves the overall stability. A feeding port 702 is provided on the side wall of the second processing cylinder 701. The feeding port 702 is used to add solid or liquid fertilizer into the mixing chamber 102. The position of the feeding port 702 is convenient for operators to manually add fertilizer or connect to an automatic fertilizer supply device. At the same time, its opening direction is coordinated with the stirring area of ​​the mixing unit 400, which helps the newly added fertilizer to disperse quickly and participate in the mixing process, improving the mixing efficiency and uniformity.

[0102] Specifically, the primary rotating filter assembly includes:

[0103] The first filter plate 801 is fixed at the center on the first rotating shaft 800;

[0104] The first filtration station is the first filter port 802 opened on the first filter plate 801;

[0105] The first filter screen 301 is embedded in the first filter port 802;

[0106] A slag discharge port 803 is provided on the side wall of the filter chamber 101 at the position of the first filter station in the spare position;

[0107] Slag discharge port 803 is connected to slag return channel 804;

[0108] The outlet of the slag return channel 804 is connected to the inlet of the water inlet pipe 201;

[0109] The primary rotary filter assembly consists of a first filter plate 801 centrally fixed to a first rotating shaft 800. This first filter plate 801 serves as the core structure of the rotary filter, achieving overall rotation via the first rotating shaft 800. The first filtration station is a first filter port 802 located on the first filter plate 801. The first filter port 802 is the key channel for water flow, forming the main working position for filtration. A first filter screen 301 is embedded within the first filter port 802, serving as the filter medium to intercept large particles of impurities in the water, preventing them from entering subsequent systems and ensuring water cleanliness. This avoids clogging of subsequent irrigation equipment and ensures its normal operation. A slag discharge port 803 is provided on the side wall of the filter chamber 101 corresponding to the position of the spare first filtration station. This slag discharge port 803 is specifically used to store and settle impurities. Impurities settle within the slag discharge port 803, forming solid sediment. The slag discharge return channel... The inlet of 804 is located at the top of the side wall of the slag discharge port 803. This design allows the sedimented impurities to remain at the bottom of the slag discharge port 803, while the clear water at the top enters the slag discharge return channel 804 through the inlet, realizing the return of the water overflowing after sedimentation. The outlet of the slag discharge return channel 804 is connected to the inlet of the water inlet pipe 201, forming a water circulation treatment path, so that the cleaned water can re-enter the water inlet pipe, avoiding water waste, and ensuring the continuity and efficiency of system operation. This first-stage rotary filter component realizes automatic switching of the filter position by rotating to switch between the working position and the standby position. At the same time, the reverse flushing function of the branch pipe 302 enables the first filter position in the standby position to perform self-cleaning, effectively solving the problem that traditional filter systems require manual cleaning at regular intervals, greatly improving the operating efficiency and stability of the system, and ensuring the smooth operation of the irrigation system.

[0110] Specifically, the secondary rotary filter assembly includes:

[0111] The second filter plate 901 is centrally fixed on the second rotating shaft 900;

[0112] The second filtration station is the second filter port 902 opened on the second filter plate 901;

[0113] The second filter 303 is embedded in the second filter port 902;

[0114] A sedimentation chamber 903 is provided on the side wall of the mixing chamber 102 corresponding to the second filter plate 901;

[0115] The bottom of the sedimentation chamber 903 corresponds to and is connected to the second filter port 902.

[0116] The top of sedimentation chamber 903 is connected to the upper part of mixing chamber 102;

[0117] The secondary rotary filtration assembly consists of a second filter plate 901 centrally fixed to a second rotating shaft 900. The second filter plate 901, as the core structure of the rotary filtration, achieves overall rotation via the second rotating shaft 900. The second filtration station is a second filter port 902 opened on the second filter plate 901. The second filter port 902 is the key channel for water flow, forming the main working position for filtration. A second filter screen 303 is embedded in the second filter port 902, serving as the filter medium to intercept impurities in the water, preventing them from entering the subsequent irrigation system, ensuring water cleanliness, and avoiding clogging of irrigation equipment due to impurities affecting normal operation. A sedimentation chamber 903 is provided on the side wall of the mixing chamber 102 corresponding to the second filter plate 901. This sedimentation chamber 903 is specifically designed to collect and settle the filtered impurities. Its structural design ensures effective sedimentation of impurities, while clean water can flow back smoothly. The bottom of the sedimentation chamber 903 is connected to the second filter plate 901. The corresponding and connected positions of the inlet 902 allow impurities trapped during filtration to fall directly into the bottom of the sedimentation chamber 903 for centralized collection. The top of the sedimentation chamber 903 is connected to the upper part of the mixing chamber 102, ensuring that the filtered clean water can flow smoothly back to the upper part of the mixing chamber 102 to participate in the subsequent water and fertilizer mixing process. This two-stage rotary filter assembly achieves automatic switching of the filtration position by rotating to switch between the working position and the standby position. At the same time, the pressure of the water flow at the end of the transfer water pipe 202 is used to reverse flush the standby filtration position, effectively solving the problem that traditional filtration systems require manual cleaning at regular intervals. After the impurities settle in the sedimentation chamber 903, they can be cleaned periodically through the detachable sedimentation box 1000, while the clean water flows back to the upper part of the mixing chamber 102 through the top of the sedimentation chamber 903, forming a highly efficient filtration and impurity treatment cycle system, which greatly improves the system's operating efficiency and stability and ensures the smooth operation of the irrigation system.

[0118] Specifically, a removable sedimentation box 1000 is inserted and removed from the sedimentation chamber 903. The removable sedimentation box 1000 includes:

[0119] The box body 1001 is divided into an upper chamber 1003 and a lower chamber 1004 by a horizontally arranged partition filter plate 1002, and a clearance groove corresponding to the transfer water pipe 202 is provided on the top.

[0120] The movable side plate 1005 is movably embedded in one side of the lower chamber 1004 and is detachably sealed by the magnetic suction assembly 1006.

[0121] A liquid inlet 1007 is provided on the movable side plate 1005 and is connected to the second filtration station.

[0122] A liquid outlet 1008 is provided on the upper side wall of the box body 1001 and communicates with the mixing chamber 102;

[0123] Handles 1009 are symmetrically fixed to the top of the box body 1001;

[0124] The housing 1001 serves as the main structure of the detachable sedimentation box 1000. Internally, it is divided into an upper chamber 1003 and a lower chamber 1004 by a horizontally arranged separator filter plate 1002. A clearance groove corresponding to the transfer water pipe 202 is provided at the top to ensure that it can be removed without interfering with the transfer water pipe 202 and without affecting the continuity of water flow. The separator filter plate 1002 is horizontally arranged inside the housing 1001, dividing the interior of the housing 1001 into the upper chamber 1003 and the lower chamber 1004, serving a filtering function. It allows the clean liquid to pass through but traps impurities, ensuring that impurities settle in the lower chamber 1004, while the clean liquid flows to the mixing chamber 102. A movable side plate 1005 is movably embedded in one side of the lower chamber 1004, achieving a separable seal through a magnetic suction assembly 1006 (using a magnet). This provides a convenient sealing method, ensuring that no liquid leakage occurs during use and facilitating quick and easy operation for the user. The sedimentation box can be quickly opened and closed. The liquid inlet 1007 is located on the movable side plate 1005 and is connected to the second filtration station. It serves as a channel for impurities to enter the lower chamber 1004, ensuring that the impurities trapped during the filtration process can smoothly enter the sedimentation box. The liquid outlet 1008 is located on the upper side wall of the box body 1001 and is connected to the mixing chamber 102. It is used to return the filtered clean liquid from the upper chamber 1003 to the upper part of the mixing chamber 102 to participate in the subsequent water and fertilizer mixing process. The handles 1009 are symmetrically fixed on the top of the box body 1001, making it easy for users to remove and install the detachable sedimentation box 1000, improving maintenance efficiency. Users only need to remove the sedimentation box through the handle 1009, separate the magnetic suction component 1006 to open the movable side plate 1005, and directly pour out the impurities deposited in the lower chamber 1004 to complete the cleaning work. This greatly simplifies the system maintenance process and ensures the long-term stable operation of the secondary filtration system.

[0125] Specifically, the mixing unit 400 includes:

[0126] A spiral lifting shaft 1101 is vertically arranged in the center of the mixing chamber 102 and driven by a drive motor 1100, and its surface is fixed with spiral blades 1102.

[0127] A number of rotating stirring rods 1103 are arranged around the spiral lifting shaft 1101. The upper end and lower end of each rotating stirring rod 1103 are movably connected to the inner wall of the mixing chamber 102 through an upper movable ring 1108 and a lower movable ring 1109, respectively.

[0128] The planetary gear transmission assembly 1104 has a sun gear 1105 fixed to the top of the spiral lifting shaft 1101, planet gears 1106 fixed to the top of their respective rotating stirring rods 1103, and a gear ring 1107 fixed to the inner wall of the central processing cylinder 100. The planet gears 1106 are meshed between the sun gear 1105 and the gear ring 1107.

[0129] The mixing unit 400 includes a spiral lifting shaft 1101 vertically disposed in the center of the mixing chamber 102 and driven by a drive motor 1100. Spiral blades 1102 are fixed to the surface of the spiral lifting shaft 1101. As the core driving component of the mixing unit, the spiral lifting shaft 1101 is powered by the drive motor 1100, enabling it to rotate. The spiral blades 1102 are fixed to the surface of the spiral lifting shaft 1101. When the spiral lifting shaft 1101 rotates, the spiral blades 1102 push the solution at the bottom of the mixing chamber 102 upwards, forming a vertical... The circulating flow effectively promotes the uniformity of water-fertilizer mixing, ensuring that the fertilizer is fully dissolved. Several rotating stirring rods 1103 are arranged around the spiral lifting shaft 1101. The upper and lower ends of each rotating stirring rod 1103 are movably connected to the inner wall of the mixing chamber 102 via an upper movable ring 1108 and a lower movable ring 1109, respectively. The rotating stirring rods 1103 are distributed around the spiral lifting shaft 1101 and movably connected to the inner wall of the mixing chamber 102 via the upper movable ring 1108 and lower movable ring 1109, ensuring that the rotating stirring rods 1103 can effectively dissolve the fertilizer. The planetary gear transmission assembly 1104 serves as the transmission system, enabling the rotating stirring rod 1103 to rotate synchronously around the sun gear 1105. The sun gear 1105 is fixed to the top of the spiral lifting shaft 1101, serving as the central drive component of the transmission system. The gear ring 1107 is fixed to the inner wall of the central processing cylinder 100, acting as a fixed outer ring. The planetary gears 1106 are fixed to the top of their respective rotating stirring rods 1103, and simultaneously interact with the sun gear 1105 and the gear ring 1107. The engagement of rings 1107 enables the synchronous rotation of the self-rotating stirring rod 1103. The spiral blades 1102 push the bottom solution upward, while the self-rotating stirring rod 1103, driven by the planetary gear transmission group 1104, rotates around the spiral lifting shaft 1101 and rotates on its own axis. At the same time, it coordinates with the vertical movement of the spiral lifting shaft 1101 to thoroughly crush fertilizer particles, achieve uniform mixing of fertilizer and water, effectively avoid fertilizer sedimentation, improve fertilizer solubility and utilization rate, and provide a uniform water-fertilizer mixture solution for subsequent filtration and irrigation.

[0130] Specifically, the inlet pipe 201 and the outlet pipe 203 are arranged side by side on the adjacent side wall of the second treatment cylinder 701. The pipe section of the inlet pipe 201 located outside the equipment is spirally wound around the outer wall of the outlet pipe 203 to form a spiral heat exchange section 1200. The spiral heat exchange section 1200 is covered with a phase change material layer 1201 and is together housed in the insulation cylinder 1202. The insulation cylinder 1202 is equipped with an electric heating plate 1203 and a temperature sensor 1204.

[0131] The inlet pipe 201 and outlet pipe 203 are arranged side-by-side on adjacent side walls of the second treatment cylinder 701. The section of the inlet pipe 201 located outside the equipment is spirally coiled around the outer wall of the outlet pipe 203, forming a spiral heat exchange section 1200. The spiral heat exchange section 1200 serves as the core structure for heat exchange, achieving heat recovery through heat transfer between the inlet pipe 201 and the outlet pipe 203. The cold water in the inlet pipe 201 and the warm water in the outlet pipe 203 exchange heat through the spiral heat exchange section 1200. The residual heat of the water in the outlet pipe 203 is used to preheat the cold water in the inlet pipe 201, improving the system's thermal efficiency. The outer casing of the 00 section is covered with a phase change material layer 1201. This phase change material layer 1201 utilizes the characteristic of phase change materials to absorb or release latent heat near the phase change temperature, thereby enhancing the heat exchange effect. When the temperature of the cold water in the inlet pipe 201 is low, the phase change material layer 1201 absorbs heat from the water in the outlet pipe 203, thus storing thermal energy. When the temperature of the water in the inlet pipe 201 rises, the phase change material layer 1201 releases the stored heat, further increasing the inlet water temperature. The phase change material layer 1201 and the spiral heat exchange section 1200 are together housed within the insulation cylinder 1202, which serves as a protective layer for the overall structure. This effectively reduces heat loss during the heat exchange process, improves heat exchange efficiency, and protects the internal structure from external environmental influences. The insulation cylinder 1202 is equipped with an electric heating plate 1203. When the water temperature in the inlet pipe 201 falls below a set threshold, the electric heating plate 1203 activates to heat the incoming water, ensuring the water temperature reaches a suitable irrigation range and preventing fertilizer solution from crystallizing due to low temperatures. The insulation cylinder 1202 also contains a temperature sensor 1204, which monitors the water temperature changes in the inlet pipe 201 in real time, converting the temperature signal into an electrical signal and feeding it back to the control system. When the temperature sensor... When the inlet water temperature is detected to be lower than the set threshold, the control system will activate the electric heating plate 1203 to heat the water. When the temperature reaches the set value, the heating will automatically stop, thus achieving precise control of the water temperature. This spiral heat exchange system achieves dynamic adjustment of the water temperature through the heat energy storage and release of the phase change material layer 1201, the auxiliary heating of the electric heating plate 1203, and the intelligent monitoring of the temperature sensor 1204. This ensures that the irrigation water is kept within a suitable temperature range, which not only improves the efficiency of heat energy utilization but also avoids the fertilizer solution from crystallizing at low temperatures, thus affecting the irrigation effect. It provides a stable temperature guarantee for integrated water and fertilizer irrigation.

[0132] Specifically, the bottom of the slag discharge return channel 804 is provided with a downwardly inclined slag collection trough 1300. A sealing baffle 1302 is embedded and installed on the outer wall of the slag collection trough 1300 by quick-release bolts 1301. The sealing baffle 1302 is flush with the outer wall of the central processing cylinder 100.

[0133] The bottom of the slag return channel 804 is provided with a downwardly inclined slag collection trough 1300. This slag collection trough 1300 serves as the final collection area for impurities. Its inclined design guides the settled impurities to gather at the lowest point of the trough, facilitating centralized processing. A sealing baffle 1302 is embedded in the outer wall of the slag collection trough 1300 via quick-release bolts 1301. The sealing baffle 1302 covers the opening of the slag collection trough 1300, sealing the impurity collection area and preventing impurities from overflowing or external contaminants from entering the system. The sealing baffle 1302 is flush with the outer wall of the central processing cylinder 100. This design keeps the outer surface of the sealing baffle 1302 flush with the main structure of the equipment, avoiding operational inconvenience or cleaning dead corners caused by structural protrusions. It also enhances the overall integrity of the equipment and reduces the impact of mechanical stress on the connection parts. The embedded installation of the quick-release bolts 1301 ensures that the sealing baffle 1302 can be quickly disassembled, facilitating users to regularly clean the deposited impurities in the slag collection trough 1300 and reducing maintenance difficulty.

[0134] The specific irrigation operation process of this device is as follows:

[0135] Phase 1: Water Input and Priority Control

[0136] Rainwater is given priority input

[0137] The coarse filter grille 602 on top of the rainwater collection tank 600 intercepts large debris such as leaves. Rainwater is preferentially injected into the inlet of the water inlet pipe 201 through the rainwater pipe 601. When the water level in the rainwater collection tank 600 is higher than the set threshold, the external water source valve is automatically closed to ensure that rainwater is the highest priority water source.

[0138] Primary filtration and impurity interception

[0139] Water flows through the inlet pipe 201 and impacts the first filtration station in the working position. The first filtration station includes a first filter port 802 and a first filter screen 301. Large particles of impurities are intercepted by the first filter screen 301 and adhere to the outside of the filter screen. The filtered clean water flows into the middle of the filter chamber 101.

[0140] Phase Two: Transfer and Synchronous Self-Cleaning

[0141] Dual-function output of intermediate water flow

[0142] The filtered water is pumped from the bottom of the filter chamber 101 to the bottom of the mixing chamber 102 through the transfer water pipe 202. This process simultaneously achieves:

[0143] Main water flow forward supply: The second filtration station is directly opposite the working position. The second filtration station includes the second filter port 902 and the second filter screen 303, which provides secondary fine filtration water supply.

[0144] Diversion and reverse flushing:

[0145] First-stage self-cleaning: The delivery pump 304 drives the branch pipe 302 to open intermittently, such as pulse flushing for 5 seconds every 10 minutes. The water flow reverses and impacts the first filter station in the standby position. The stripped impurities are discharged into the slag return channel 804 through the slag discharge port 803 and finally return to the inlet of the water inlet pipe 201 for re-filtration.

[0146] Secondary self-cleaning: The water flow at the end of the transfer water pipe 202 uses its own pressure to reverse the impact on the second filtration station of the standby position, and the impurities are flushed into the detachable sedimentation box 1000 in the sedimentation chamber 903.

[0147] Sedimentation box for impurity separation

[0148] Impurities enter the lower chamber 1004 of the sedimentation box 1000 through the liquid inlet 1007, are intercepted and precipitated by the separator filter plate 1002, and the filtrate passes through the separator filter plate 1002 and enters the upper chamber 1003. It then flows back to the mixing chamber 102 through the liquid outlet 1008 on the side wall to participate in the mixing.

[0149] Phase 3: Water and Fertilizer Mixing and Fine Filtration Output

[0150] Fertilizer Mixing Enhancement

[0151] Solid fertilizer is fed into the mixing chamber 102 through the feeding port 702. The mixing unit 400 is started. The spiral lifting shaft 1101 drives the spiral blades 1102 to push the bottom solution upward to form a vertical circulation. The rotating stirring rod 1103 is movably connected to the chamber wall through the upper movable ring 1108 and the lower movable ring 1109. Under the drive of the planetary gear transmission group 1104, it revolves and rotates synchronously to thoroughly crush the fertilizer particles.

[0152] Secondary fine filtration and irrigation output

[0153] The mixed solution passes through the second filter 303 at the working position, where undissolved fertilizer particles are intercepted. The finely filtered water-fertilizer solution is then transported to the irrigation equipment through the outlet pipe 203.

[0154] Phase Four: Intelligent Differential Pressure Control

[0155] Level 1 congestion response

[0156] When the first differential pressure sensor 501 detects a pressure difference of >0.15MPa between the inlet pipe 201 and the transfer pipe 202 for 10 seconds, the controller 505 starts the first servo motor 503, driving the first rotating shaft 800 to rotate 90° (in this application, the number of first filtration stations is set to 4), switching the standby first filtration station to the working station, and the original blocked station becomes the standby station, waiting for the next flushing of the diversion branch pipe 302.

[0157] Level 2 congestion response

[0158] When the second differential pressure sensor 502 detects a pressure difference of >0.2MPa between the transfer water pipe 202 and the outlet water pipe 203 for 10 seconds, the controller 505 starts the second servo motor 504, driving the second rotating shaft 900 to rotate 60° (in this application, the number of second filtration stations is set to 6), switching the second filtration station, and the impurities washed off fall directly into the lower chamber 1004 of the sedimentation box 1000.

[0159] Phase 5: Maintenance and Thermal Management

[0160] Quick cleaning of sedimentation box

[0161] Pull the handle 1009 to remove the detachable sediment box 1000, separate the magnetic suction assembly 1006 to open the movable side panel 1005, and directly pour out the deposited impurities from the lower chamber 1004.

[0162] Dynamic heat recovery

[0163] The spiral heat exchange section 1200 of the inlet pipe 201 is tightly coiled around the outer wall of the outlet pipe 203. The residual irrigation heat in the outlet pipe 203 is absorbed through the phase change material layer 1201 (such as paraffin-based material, phase change temperature 25°C). When the temperature sensor 1204 detects that the inlet water temperature is <10°C, the electric heating plate 1203 is activated, raising the water temperature to above 15°C in the heat preservation cylinder 1202 to prevent fertilizer solution crystallization.

[0164] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0165] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 and fertilizer integrated irrigation device, characterized in that, include: The central processing cylinder (100) is provided with a filter chamber (101) and a mixing chamber (102) inside. Water and fertilizer delivery pipeline (200), including: A water inlet pipe (201) connecting the bottom of the filter chamber (101) to an external water source; A transfer water pipe (202) connects the bottom of the filter chamber (101) and the mixing chamber (102); A water outlet pipe (203) connecting the mixing chamber (102) and the external irrigation equipment; The self-cleaning filter unit (300) includes: A primary rotary filter assembly is rotatably mounted on the side wall of the filter chamber (101). Multiple first filter stations are evenly distributed around its circumference. Each first filter station is equipped with a first filter screen (301). The water outlet of the inlet pipe (201) is directed to the first filter station of one of the working stations for water inlet filtration. A diversion branch pipe (302) driven by a transfer pump (304) is provided on the intermediate water pipe (202). The water outlet of the diversion branch pipe (302) points to the first filter station of another spare station, which is used to reverse flush the filter screen of that station to achieve self-cleaning. The secondary rotary filter assembly is rotatably mounted on the side wall of the mixing chamber (102). Multiple second filtration stations are evenly distributed around its circumference. Each second filtration station is equipped with a second filter screen (303). The inlet end of the outlet pipe (203) is directly facing the second filtration station of one of the working stations for fine filtration of the outlet water. The outlet end of the transfer water pipe (202) is directly facing the second filtration station of another standby station. The filter screen of this station is flushed in reverse by the pressure of the main water flow to achieve self-cleaning. A mixing unit (400) is disposed in the mixing chamber (102) for mixing water-fertilizer solution; The differential pressure sensing control system (500) includes: The first differential pressure sensor (501) has a first pressure end threadedly connected to the pressure measuring hole on the pipe wall of the inlet pipe (201) and a second pressure end threadedly connected to the pressure measuring hole on the pipe wall of the transfer water pipe (202), and is used to detect the pressure difference between the inlet pipe (201) and the transfer water pipe (202); The second differential pressure sensor (502) has a first pressure end flange connected to the pressure measuring hole on the pipe wall of the transfer water pipe (202) and a second pressure end flange connected to the pressure measuring hole on the pipe wall of the outlet water pipe (203), and is used to detect the pressure difference between the transfer water pipe (202) and the outlet water pipe (203); The output end of the first servo motor (503) is fixedly connected to the first rotating shaft (800) of the first-stage rotary filter assembly. The output end of the second servo motor (504) is fixedly connected to the second rotating shaft (900) of the secondary rotating filter assembly. The controller (505) fixed to the outer wall of the central processing cylinder (100) receives the differential pressure signal. When the differential pressure continues to exceed the threshold, it controls the corresponding servo motor to rotate and switch to the next standby filtration station. The primary rotary filter assembly includes: The first filter plate (801) is fixed at the center on the first rotating shaft (800); The first filtration station is the first filter port (802) opened on the first filter plate (801). The first filter screen (301) is embedded in the first filter port (802); A slag discharge port (803) is provided on the side wall of the filter chamber (101) at the position of the first filter station in the spare position. The slag discharge port (803) is connected to the slag return channel (804); The outlet of the slag return channel (804) is connected to the inlet of the water inlet pipe (201); The secondary rotary filter assembly includes: The second filter plate (901) is fixed at the center on the second rotating shaft (900); The second filtration station is the second filter port (902) opened on the second filter plate (901). The second filter screen (303) is embedded in the second filter port (902); A sedimentation chamber (903) is provided on the side wall of the mixing chamber (102) corresponding to the second filter plate (901); The bottom of the sedimentation chamber (903) corresponds to and is connected to the second filter port (902); The top of the sedimentation chamber (903) is connected to the upper part of the mixing chamber (102).

2. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that, It also includes a rainwater collection trough (600) located on top of the central processing cylinder (100), the lowest point of the bottom of the rainwater collection trough (600) is connected to the inlet of the water inlet pipe (201) through a rainwater pipe (601), and the top of the rainwater collection trough (600) is covered with a coarse filter screen (602).

3. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that: The central processing cylinder (100) is composed of a first processing cylinder (700) and a second processing cylinder (701) that are connected vertically. The first processing cylinder (700) forms a filter chamber (101) inside, and the second processing cylinder (701) forms a mixing chamber (102) inside. The side length of the first processing cylinder (700) is smaller than the side length of the second processing cylinder (701). The side wall of the second processing cylinder (701) is provided with a feeding port (702).

4. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that: A removable sedimentation box (1000) is inserted and detached within the sedimentation chamber (903). The removable sedimentation box (1000) includes: The box body (1001) is divided into an upper chamber (1003) and a lower chamber (1004) by a horizontally arranged partition filter plate (1002), and a clearance groove for the corresponding transfer water pipe (202) is provided on the top; The movable side plate (1005) is movably embedded in one side of the lower chamber (1004) and is detachably sealed by a magnetic suction assembly (1006); An inlet hole (1007) is provided on the movable side plate (1005) and is connected to the second filtration station. A liquid outlet (1008) is provided on the upper side wall of the box body (1001) and communicates with the mixing chamber (102). A handle (1009) is symmetrically fixed to the top of the box (1001).

5. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that: The mixing unit (400) includes: A spiral lifting shaft (1101) is vertically set in the center of the mixing chamber (102) and driven by a drive motor (1100), with spiral blades (1102) fixed on its surface. A number of rotating stirring rods (1103) are arranged around the spiral lifting shaft (1101). The upper and lower ends of each rotating stirring rod (1103) are movably connected to the inner wall of the mixing chamber (102) through the upper movable ring (1108) and the lower movable ring (1109), respectively. The planetary gear transmission assembly (1104) has a sun gear (1105) fixed to the top of the spiral lifting shaft (1101), planet gears (1106) fixed to the top of their respective rotating stirring rods (1103), and a gear ring (1107) fixed to the inner wall of the central processing cylinder (100). The planet gears (1106) are meshed between the sun gear (1105) and the gear ring (1107).

6. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that: The inlet pipe (201) and outlet pipe (203) are arranged side by side on adjacent side walls of the second treatment cylinder (701). The section of the inlet pipe (201) located outside the equipment is spirally coiled around the outer wall of the outlet pipe (203) to form a spiral heat exchange section (1200). The spiral heat exchange section (1200) is covered with a phase change material layer (1201) and is together housed in the insulation cylinder (1202). The insulation cylinder (1202) is equipped with an electric heating plate (1203) and a temperature sensor (1204).

7. The integrated water and fertilizer irrigation equipment according to claim 1, characterized in that: The bottom of the slag return channel (804) is provided with a downwardly inclined slag collection trough (1300). A sealing baffle (1302) is embedded in the outer wall of the slag collection trough (1300) by quick-release bolts (1301). The sealing baffle (1302) is flush with the outer wall of the central processing cylinder (100).

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