Water and fertilizer machine

Abstract

The utility model belongs to the technical field of forestry equipment relates to a kind of water and fertilizer machine, comprising: water delivery system, including water delivery pipe;Fertilizer solution delivery system, including several fertilizer solution delivery units, and the delivery end of the fertilizer solution delivery unit is converged to fertilizer solution delivery pipe;Pump system, including centrifugal pump, and the import of the centrifugal pump is connected with water delivery pipe and fertilizer solution delivery pipe simultaneously, and export is connected with water and fertilizer delivery pipe;Water return system, the water return system is connected between water and fertilizer delivery pipe and fertilizer solution delivery pipe, including first return pipe and second return pipe, the first return pipe is communicated with the upstream of fertilizer solution delivery pipe, and second return pipe is communicated with the downstream of fertilizer solution delivery pipe by a hose, EC sensor is provided on the first return pipe, and pH sensor is provided on the second return pipe.The water and fertilizer machine provided by the utility model can more accurately monitor its operating state, with compact structure, high degree of automation, accurate matching advantages.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural and forestry equipment, and relates to a water and fertilizer machine. Background Technology

[0002] A fertigation machine is an agricultural machine that integrates irrigation and fertilization. It typically uses a pressure system to mix water and fertilizer solution in a specific ratio, then precisely delivers the mixture to the roots or leaves of crops via pipes and nozzles. It can accurately control the amount of water and fertilizer applied based on different crops, growth stages, and soil conditions, achieving highly efficient water and fertilizer utilization.

[0003] Chinese utility model patent CN211671339U discloses a bus-controlled integrated water and fertilizer machine, comprising a touch control screen, a control bus, and a water pump. The control bus is connected to the touch control screen. The water pump's inlet is connected to an inlet pipe, and its outlet is connected to an outlet pipe. The outlet pipe is connected to the water and fertilizer pipe via several parallel Venturi fertilizer applicators. The water and fertilizer pipe is connected to an irrigation pipe, and an irrigation zone solenoid valve is connected to the irrigation pipe. Each Venturi fertilizer applicator's fertilizer inlet is connected to a fertilizer pipe, and a fertilizer solenoid valve is connected to the fertilizer pipe. The water pump, irrigation zone solenoid valve, and fertilizer solenoid valve are all connected to the control bus via separate decoders.

[0004] To monitor the state of the mixed water and fertilizer, most existing integrated water and fertilizer machines are equipped with EC sensors and pH sensors on the water and fertilizer pipelines, but the accuracy of their detection has always been a challenge. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a water and fertilizer machine that can more accurately monitor its operating status and has the advantages of compact structure, high degree of automation, and precise mixing ratio.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution: A water and fertilizer machine, comprising: Water delivery system, including water delivery pipes; A fertilizer solution delivery system includes several fertilizer solution delivery units, the delivery ends of which converge into a fertilizer solution delivery pipe; The pump system includes a centrifugal pump, the inlet of which is connected to both a water delivery pipe and a fertilizer solution delivery pipe, and the outlet of which is connected to both a water and fertilizer delivery pipe. The water return system is connected between the water and fertilizer delivery pipe and the fertilizer solution delivery pipe. It includes a first water return pipe and a second water return pipe. The first water return pipe is connected to the upstream of the fertilizer solution delivery pipe, and the second water return pipe is connected to the downstream of the fertilizer solution delivery pipe through a flexible hose. The diameter of the flexible hose is smaller than the diameter of the first water return pipe and the second water return pipe. An EC sensor is installed on the first water return pipe, and a pH sensor is installed on the second water return pipe.

[0007] In the aforementioned water-fertilizer machine, the first return water pipe includes two parallel pipes, and each pipe is equipped with an EC sensor.

[0008] In one of the above-mentioned water-fertilizer machines, two pH sensors are connected in series on the second return water pipe.

[0009] In the aforementioned water-fertilizer machine, a first filter is installed between the water return system and the water-fertilizer delivery pipe.

[0010] In one of the above-mentioned water-fertilizer machines, an upwardly extending exhaust pipe is connected to the fertilizer liquid delivery pipe, and a first pressure sensor is installed on the exhaust pipe.

[0011] In one of the above-mentioned water-fertilizer machines, a second pressure sensor and a water flow meter are installed on the water delivery pipe.

[0012] In one of the above-mentioned water-fertilizer machines, the fertilizer solution delivery unit includes a second filter, a turbine flow meter, an electric proportional valve, and a check valve arranged sequentially along the fertilizer solution delivery direction on the pipeline.

[0013] The aforementioned water-fertilizer machine also includes a housing. The water delivery system, fertilizer solution delivery system, pump system, and return water system are all housed within the housing and supported by the bottom plate of the housing. An opening is provided at the bottom of the rear side of the housing, and the interfaces of the water delivery pipe, fertilizer solution delivery unit, and water-fertilizer delivery pipe all extend outside the housing.

[0014] In the aforementioned water-fertilizer machine, a display panel, control buttons, and an emergency stop button are provided on the front side of the housing, and a motor-driven ventilation fan is provided on the side of the housing.

[0015] In the aforementioned water and fertilizer machine, a light strip is installed through the housing, and the light strip displays the working status of the water and fertilizer machine in different display states; the different display states of the light strip include different colors, different brightness, different flashing cycles, etc.

[0016] In the aforementioned water and fertilizer machine, the EC sensor, pH sensor, various pressure sensors, various flow meters, electric proportional valve, display panel, control buttons, emergency stop button, and light strip are all electrically connected to its controller, which adopts a conventional controller for intelligent water and fertilizer systems.

[0017] Compared with the prior art, this utility model has the following advantages: 1. This utility model provides a fertigation machine with an independent return water detection circuit. The EC sensor and pH sensor are respectively arranged on the return water pipeline with a flow stabilizing function, effectively avoiding interference from pressure and flow fluctuations in the main circuit, and significantly improving the accuracy and stability of EC and pH value measurements. Furthermore, different return water pipelines are designed to meet the different environmental requirements of the EC and pH sensors: the EC sensor operates in the high-flow return water pipeline; the pH sensor operates in the low-flow return water pipeline by using a flexible hose for flow limiting. Simultaneously, the flexibility of the hose absorbs some of the pressure fluctuations and vibrations generated by the pump and system, creating a more stable measurement environment for the pH sensor.

[0018] 2. This invention comprises an adjustable fertilizer solution preparation unit consisting of a filter, a turbine flow meter, an adjustable electric proportional valve, and a check valve. Multiple fertilizer solution preparation units work together to achieve a precise fertilizer solution ratio, thereby realizing the precise ratio and delivery of water and various fertilizer solutions in the intelligent water and fertilizer control system. Based on high-precision sensor data and closed-loop control of the flow meter and proportional valve, this invention achieves precise water-fertilizer ratio. It features a compact structure, high degree of automation, and accurate ratio. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention (excluding the housing); Figure 2 This is a perspective view of the present invention; Reference numerals: 1. Water delivery pipe; 2. Fertilizer solution delivery pipe; 3. Centrifugal pump; 4. Water and fertilizer delivery pipe; 5. First return water pipe; 6. Second return water pipe; 7. Hose; 8. EC sensor; 9. pH sensor; 10. First filter; 11. Exhaust pipe; 12. First pressure sensor; 13. Second pressure sensor; 14. Water flow meter; 15. Second filter; 16. Turbine flow meter; 17. Electric proportional valve; 18. Check valve; 19. Housing; 20. Display panel; 21. Control button; 22. Emergency stop button; 23. Ventilation fan; 24. LED strip. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 : A water and fertilizer machine, comprising: A water delivery system includes a water delivery pipe 1; a second pressure sensor 13 and a water flow meter 14 are installed on the water delivery pipe 1.

[0021] The fertilizer solution delivery system includes several fertilizer solution delivery units, the delivery ends of which converge to the fertilizer solution delivery pipe 2; each fertilizer solution delivery unit includes a second filter 15, a turbine flow meter 16, an electric proportional valve 17, and a one-way valve 18 arranged sequentially along the fertilizer solution delivery direction on the pipeline.

[0022] The pump system includes a centrifugal pump 3, the inlet of which is connected to both a water delivery pipe 1 and a fertilizer solution delivery pipe 2, and the outlet of which is connected to a water and fertilizer delivery pipe 4. A water return system is connected between the water and fertilizer delivery pipe 4 and the fertilizer solution delivery pipe 2. It includes a first water return pipe 5 and a second water return pipe 6. The first water return pipe 5 is connected upstream of the fertilizer solution delivery pipe 2, and the second water return pipe 6 is connected downstream of the fertilizer solution delivery pipe 2 via a flexible hose 7. The diameter of the flexible hose 7 is smaller than the diameters of the first water return pipe 5 and the second water return pipe 6. An EC sensor 8 is installed on the first water return pipe 5, and a pH sensor 9 is installed on the second water return pipe 6. A first filter 10 is installed between the water return system and the water and fertilizer delivery pipe 4.

[0023] The exhaust system includes an upwardly extending exhaust pipe 11 connected to the fertilizer liquid delivery pipe 2, and a first pressure sensor 12 is installed on the exhaust pipe 11.

[0024] Comparison Appendix Figure 1 The working process of this embodiment is as follows: The controller starts the centrifugal pump 3, which draws in clean water and fertilizer solution from the water delivery pipe 1 and the fertilizer solution delivery pipe 2, mixes them in the pump, and then outputs them through the water-fertilizer delivery pipe 4 for irrigation. The controller dynamically adjusts the opening of the electric proportional valve 17 of each fertilizer solution delivery unit to independently control the amount of fertilizer solution drawn in by each unit, thereby accurately controlling the fertilizer solution ratio. The exhaust pipe 11 extending upward on the fertilizer solution delivery pipe 2 and its first pressure sensor 12 are used for constant pressure control of the centrifugal pump 3 to ensure stable operation of the system.

[0025] The dynamic detection process in this embodiment is as follows: Driven by the pressure difference, the mixed liquid in the water-fertilizer delivery pipe 4 enters the return water system after passing through the first filter 10, and then enters the first return water pipe 5 and the second return water pipe 6 respectively. The mixed liquid entering the first return water pipe 5 has a large flow rate and fast velocity, which can fully flush the EC sensor 8, prevent salt deposition, and quickly reflect the real-time changes in the concentration of the mixed liquid, ensuring the representativeness and speed of the measurement. The mixed liquid entering the second return water pipe 6 is physically limited by the thin flexible tube 7 to form a small flow and stable liquid flow. This flow pattern can effectively avoid the generation of bubbles and reading fluctuations, providing a stable and turbulent measurement environment for the pH sensor 9, ensuring the accuracy and stability of the measurement.

[0026] Preferably, the first return water pipe 5 includes two parallel pipes, each equipped with an EC sensor 8. Two pH sensors 9 are connected in series on the second return water pipe 6. The EC sensors 8 employ a parallel redundant design, while the pH sensors 9 employ a series verification design, improving the reliability of key sensor data.

[0027] Comparison Appendix Figure 1 The water-fertilizer machine in this embodiment also includes a housing 19. The water delivery system, fertilizer solution delivery system, pump system and return water system are all installed inside the housing 19 and supported by the bottom plate of the housing 19. An opening is provided at the bottom of the rear side of the housing 19. The interfaces of the water delivery pipe 1, fertilizer solution delivery unit and water-fertilizer delivery pipe 4 all extend to the outside of the housing 19.

[0028] Furthermore, a display panel 20, control buttons 21, and an emergency stop button 22 are provided on the front side of the enclosure 19, and a motor-driven ventilation fan 23 is provided on the side of the enclosure 19. The display panel 20, control buttons 21, and emergency stop button 22 provide a human-machine interface, while the side ventilation fan 23 is responsible for heat dissipation inside the enclosure.

[0029] Furthermore, a light strip 24 is installed throughout the housing 19. The light strip 24 displays the working status of the water and fertilizer machine in different display states, including different colors, different brightness, and different flashing cycles. Through the changing light color and flashing pattern, the working status of the equipment, such as standby, operation, and alarm, is displayed intuitively.

[0030] The aforementioned EC sensor 8, pH sensor 9, various pressure sensors, various flow meters, electric proportional valve 17, display panel 20, control button 21, emergency stop button 22, and LED strip 24 are all electrically connected to its controller. The controller is a conventional programmable controller for intelligent water and fertilizer systems, such as a PLC or embedded microcontroller. The controller receives signals from various sensors and input components, and controls the operating status of the electric proportional valve 17, centrifugal pump 3, and LED strip 24 according to a preset program, thereby achieving precise water and fertilizer ratio and monitoring of system status.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A water-fertilizer machine, characterized in that, include: A water delivery system, including a water delivery pipe (1); The fertilizer solution delivery system includes several fertilizer solution delivery units, the delivery ends of which converge into the fertilizer solution delivery pipe (2). The pump system includes a centrifugal pump (3), the inlet of which is connected to both a water delivery pipe (1) and a fertilizer delivery pipe (2), and the outlet of which is connected to a water-fertilizer delivery pipe (4). The water return system is connected between the water and fertilizer delivery pipe (4) and the fertilizer liquid delivery pipe (2), and includes a first water return pipe (5) and a second water return pipe (6). The first water return pipe (5) is connected to the upstream of the fertilizer liquid delivery pipe (2), and the second water return pipe (6) is connected to the downstream of the fertilizer liquid delivery pipe (2) through a flexible hose (7). The diameter of the flexible hose (7) is smaller than the diameter of the first water return pipe (5) and the second water return pipe (6). An EC sensor (8) is installed on the first water return pipe (5), and a pH sensor (9) is installed on the second water return pipe (6).

2. The water and fertilizer machine according to claim 1, characterized in that, The first return water pipe (5) includes two parallel pipes, and each pipe is equipped with an EC sensor (8).

3. A water-fertilizer machine according to claim 1, characterized in that, Two pH sensors (9) are connected in series on the second return water pipe (6).

4. A water-fertilizer machine according to claim 1, characterized in that, A first filter (10) is installed between the water return system and the water and fertilizer delivery pipe.

5. A water-fertilizer machine according to claim 1, characterized in that, The fertilizer liquid delivery pipe (2) is connected to an upwardly extending exhaust pipe (11), and a first pressure sensor (12) is installed on the exhaust pipe (11).

6. A water-fertilizer machine according to claim 1, characterized in that, The water delivery pipe (1) is equipped with a second pressure sensor (13) and a water flow meter (14).

7. A water-fertilizer machine according to claim 1, characterized in that, The fertilizer solution delivery unit includes a second filter (15), a turbine flow meter (16), an electric proportional valve (17), and a check valve (18) arranged sequentially along the fertilizer solution delivery direction on the pipeline.

8. A water-fertilizer machine according to claim 1, characterized in that, It also includes a housing (19), in which the water delivery system, fertilizer solution delivery system, pump system and return water system are all located and supported by the bottom plate of the housing (19). An opening is provided at the bottom of the rear side of the housing (19), and the interfaces of the water delivery pipe (1), fertilizer solution delivery unit and water-fertilizer delivery pipe (4) all extend to the outside of the housing (19).

9. A water-fertilizer machine according to claim 8, characterized in that, The front of the enclosure (19) is provided with a display panel (20), control buttons (21) and emergency stop button (22), and a motor-driven ventilation fan (23) is provided on the side of the enclosure (19).

10. A water-fertilizer machine according to claim 8, characterized in that, A light strip (24) is installed through the housing (19), and the light strip (24) displays the working status of the water and fertilizer machine in different display states.

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