Intelligent control water and fertilizer machine

Abstract

The utility model relates to water and fertilizer machine technical field, concretely relates to an intelligent control water and fertilizer machine, including metal frame, the top fixedly connected with control box and centrifugal water pump of metal frame, the water inlet pipe is communicated with the centrifugal water pump far from control box side, the main connecting pipe is communicated with the centrifugal water pump near control box side, the main connecting pipe extends upwards along control box side wall, and the upstream of main connecting pipe is set to horizontal structure, the upstream of main connecting pipe is fixedly connected with control box side wall, the upstream of main connecting pipe bottom is communicated with a plurality of vice connecting pipes, all are equipped with proportional electric valve in the upstream of vice connecting pipe, all are equipped with venturi assembly in the bottom of proportional electric valve, all are equipped with the fat -sucking pipe of vice connecting pipe, the top of metal frame is equipped with mixing chamber, the downstream of vice connecting pipe all is connected with mixing chamber, and the water outlet pipe is communicated with mixing chamber, and the PH monitoring piece and EC monitoring piece are equipped in the water outlet pipe. The utility model is used for real -time monitoring output water and fertilizer concentration and automatically adjusting water and fertilizer concentration according to the monitoring result.

Description

Technical Field

[0001] This utility model relates to the field of water and fertilizer machine technology, specifically to an intelligent control water and fertilizer machine. Background Technology

[0002] Integrated water and fertilizer technology refers to a new agricultural technology that integrates irrigation and fertilization. It utilizes a pressure system (or natural terrain gradient) to mix soluble solid or liquid fertilizers, tailored to soil nutrient content and crop requirements, with irrigation water. This mixture is then supplied through a controllable pipeline system, ensuring the water and fertilizer are evenly, regularly, and quantitatively irrigated to the crop's root zone. This maintains the soil around the main root system in a loose and appropriately moist environment. Furthermore, based on the specific nutrient requirements of different crops, soil conditions, nutrient content, and the water and fertilizer needs at different growth stages, the system designs the supply of water and nutrients to the crops at specific times and in appropriate proportions.

[0003] Traditional fertigation relies on manual mixing according to specific ratios, which can lead to inaccurate ratios and excessively high fertilizer concentrations, posing a risk of burning seedlings. To address this issue, the existing KC380 fertigation machine includes a pump body with an inlet, outlet, and several fertilizer inlets. Inside the pump body are a main water flow channel and a fertilizer channel, integrating a hydraulically driven proportional fertilization component. This component includes a piston chamber and a reversing valve assembly. The piston chamber houses a piston mechanism, which, through the reversing valve assembly, enables continuous reciprocating motion. A proportional regulating valve is located on the main water flow channel. By changing its opening, the flow rate and pressure of the main water flowing through the pump body are adjusted, thereby changing the reciprocating frequency of the piston mechanism and the amount of fertilizer absorbed per unit time, ultimately achieving stepless adjustment of the fertilization ratio.

[0004] In practice, although the fertilizer ratio can be adjusted through the piston mechanism, reversing valve group and proportional regulating valve to achieve the preset water-fertilizer ratio, a single water-fertilizer ratio cannot meet the fertilizer requirements of crops at each growth stage.

[0005] Therefore, this utility model proposes an intelligent control water and fertilizer machine to solve the above problems. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides an intelligent control water and fertilizer machine, which monitors the output water and fertilizer concentration in real time and automatically adjusts the water and fertilizer concentration based on the monitoring results.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: An intelligent control water and fertilizer machine includes a metal frame. A control box and a centrifugal water pump are fixedly connected to the top of the metal frame. The control box and the centrifugal water pump are located at the same horizontal position. An inlet pipe is connected to the side of the centrifugal water pump away from the control box, and a main connecting pipe is connected to the side of the centrifugal water pump near the control box. The main connecting pipe extends upward along the side wall of the control box, and the upstream of the main connecting pipe is set as a horizontal structure. The upstream of the main connecting pipe is fixedly connected to the side wall of the control box. Several auxiliary connecting pipes are connected to the bottom of the upstream of the main connecting pipe. Each auxiliary connecting pipe is equipped with a proportional electric valve. The input end of each proportional electric valve is connected to the output end of the control box. A venturi component is provided at the bottom of each proportional electric valve. A fertilizer suction pipe is provided on each auxiliary connecting pipe. A mixing chamber is provided at the top of the metal frame. The downstream of each auxiliary connecting pipe is connected to the mixing chamber. The mixing chamber is connected to an outlet pipe. A pH monitoring device and an EC monitoring device are provided in the outlet pipe. The output ends of the pH monitoring device and the EC monitoring device are connected to the input end of the control box.

[0008] The technical principle of the above scheme is as follows: water is pumped from the inlet pipe into the main connecting pipe by a centrifugal water pump. The main connecting pipe is then divided into several secondary connecting pipes. The proportional electric valve upstream of the secondary connecting pipe is controlled by the control box to adjust the water flow ratio. The water flow generates negative pressure through the Venturi component and draws in fertilizer through the fertilizer suction pipe. After the fertilizer solution is mixed in the mixing chamber, it is output through the outlet pipe. The pH and EC monitoring devices in the outlet pipe monitor the water and fertilizer parameters in real time and feed them back to the control box. The control box adjusts the opening of the proportional electric valve according to the monitoring results to dynamically control the water and fertilizer concentration.

[0009] The above solution has the following advantages: Compared with the existing technology, this solution ensures accurate and stable output water and fertilizer concentration by realizing real-time monitoring and automatic adjustment of water and fertilizer concentration, meeting the dynamic needs of crops at different growth stages, reducing human intervention and lowering the risk of seedling burn.

[0010] Furthermore, each Venturi assembly includes, from top to bottom, a contraction tube section, a negative pressure tube section, and a diffuser tube section. The top of each contraction tube section is connected to the bottom of the corresponding upstream secondary connecting tube, and each diffuser tube section is connected to the top of the corresponding downstream secondary connecting tube.

[0011] Beneficial effects: The constriction pipe section reduces the water flow to increase the flow velocity, and a negative pressure zone is formed in the negative pressure pipe section. Fertilizer is drawn in through the fertilizer suction pipe. The diffusion pipe section reduces the flow velocity and restores the pressure, so that the fertilizer solution and water flow are fully mixed before entering the downstream of the secondary connecting pipe. The Venturi effect is used to efficiently draw in fertilizer. The structure is simple and does not require additional power, which improves fertilizer absorption efficiency and stability and ensures that the fertilizer solution and water are mixed evenly.

[0012] Furthermore, a spiral mixing element is provided inside the mixing chamber.

[0013] Beneficial effects: When the water-fertilizer mixture flows through the mixing chamber, the spiral structure guides the fluid to rotate, which promotes the full mixing and diffusion of water and fertilizer through centrifugal force and shear force, enhances the uniformity of water-fertilizer mixing, avoids local concentrations that are too high or too low, and improves the stability and consistency of the output water-fertilizer.

[0014] Furthermore, the top of each fertilizer suction tube is connected to the corresponding negative pressure pipe section, and a filter screen is fixedly connected to the inner wall of the fertilizer suction tube on the side near the negative pressure pipe section.

[0015] Beneficial effects: The top of the fertilizer suction pipe is connected to a negative pressure pipe section, which uses negative pressure to suck up fertilizer. A filter screen is fixed on the inner wall of the fertilizer suction pipe near the negative pressure pipe section to filter out impurities in the fertilizer, prevent impurities from entering and clogging the pipe, protect equipment components, extend service life, and ensure smooth fertilizer suction process.

[0016] Furthermore, a pressure sensor is installed inside the main connecting pipe, and the output end of the pressure sensor is connected to the input end of the control box.

[0017] Beneficial effects: The pressure sensor monitors the water pressure in the main pipeline in real time and transmits the signal to the control box. The control box adjusts the power of the centrifugal water pump and the opening of the proportional electric valve according to the pressure data, so as to realize the real-time monitoring of the water pressure in the main pipeline, avoid damage to the equipment due to excessive pressure or affect the fertilizer absorption efficiency due to excessive pressure, and ensure the safe and stable operation of the system.

[0018] Furthermore, flow meters are fixedly connected to the inner wall of the upstream of the secondary connecting pipe, and the output end of each flow meter is connected to the signal input end of the control box.

[0019] Beneficial effects: The flow rate of each auxiliary pipe is monitored in real time by the flow meter and fed back to the control box. The control box combines the flow data to accurately adjust the opening of the corresponding proportional electric valve, and accurately control the water flow distribution ratio of each auxiliary connecting pipe, ensuring that different fertilizers are absorbed in the preset ratio, thus improving the accuracy of water and fertilizer concentration adjustment.

[0020] Furthermore, several casters are fixedly connected to the bottom of the metal frame.

[0021] Beneficial effects: Improves the flexibility and portability of equipment, making it easy to transfer and use between different plots or planting areas, and reducing the labor intensity of handling.

[0022] Furthermore, the control box is equipped with a display screen, and the input terminal of the display screen is connected to the output terminal of the controller.

[0023] Beneficial effects: The display screen allows users to intuitively view system operation data, making it convenient for users to view and monitor the working status of the water and fertilizer machine in real time, and facilitating timely detection and intervention of abnormalities.

[0024] Furthermore, each fertilizer suction pipe is equipped with a solenoid valve at its bottom, and the input end of the solenoid valve is connected to the output end of the control box.

[0025] Beneficial effects: The solenoid valve enables automated control of the fertilizer absorption process, allowing the fertilizer suction tube to be opened or closed as needed, flexibly switching fertilizer types or pausing fertilizer absorption, thus improving the system's controllability and adaptability.

[0026] Furthermore, the inner wall of the mixing chamber is provided with an anti-corrosion coating.

[0027] Beneficial effects: The anti-corrosion coating extends the service life of the mixing chamber, prevents metal corrosion from contaminating the water and fertilizer, and ensures the purity and safety of the output water and fertilizer.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 This is an overall isometric view of an embodiment of the intelligent control water and fertilizer machine of this utility model; Figure 2 This is a schematic diagram of the main connecting pipe structure of an embodiment of the intelligent control water and fertilizer machine of this utility model; Figure 3 This is a side sectional view of the auxiliary connecting pipe in an embodiment of the intelligent control water and fertilizer machine of this utility model.

[0030] The reference numerals in the accompanying drawings of this instruction manual include: 1. Metal frame; 2. Control box; 3. Centrifugal water pump; 4. Inlet pipe; 5. Main connecting pipe; 6. Secondary connecting pipe; 7. Proportional electric valve; 8. Suction pipe; 9. Mixing chamber; 10. Outlet pipe; 11. pH monitoring device; 12. EC monitoring device; 13. Contraction pipe section; 14. Negative pressure pipe section; 15. Diffusion pipe section; 16. Filter screen; 17. Flow meter; 18. Casters. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following detailed description illustrates the specific implementation method: Example 1: As attached Figure 1 As shown: An intelligent control fertigation machine includes a metal frame 1. A control box 2 and a centrifugal water pump 3 are fixedly connected to the top of the metal frame 1. The control box 2 is preferably a Siemens S7-1200 PLC, and the centrifugal water pump 3 is preferably a Grundfos CHI series. A display screen is provided on the surface of the control box 2, and the display screen is preferably a Weintek MT8102IE. The input terminal of the display screen is connected to the output terminal of the controller. (See attached diagram.) Figure 2 As shown, control box 2 is located on the top left of metal frame 1, and centrifugal water pump 3 is located on the right side of control box 2. Since the concentration of fertilizer in water and fertilizer is crucial for crop growth, excessively high concentrations may lead to seedling burn, while insufficient concentrations may result in inadequate nutrient supply and poor growth. (See attached diagram.) Figure 2 As shown, the centrifugal water pump 3 has an inlet pipe 4 connected to the side away from the control box 2, and a main connecting pipe 5 connected to the side of the pump closer to the control box 2. A pressure sensor is installed inside the main connecting pipe 5, preferably a Honeywell 26PC series sensor. The output of the pressure sensor is connected to the input of the control box 2. The main connecting pipe 5 extends upwards along the side wall of the control box 2, and the upstream of the main connecting pipe 5 is horizontally configured, as shown in the attached diagram. Figure 2As shown, the height of the horizontal structure upstream of the main connecting pipe 5 is lower than the top height of the control box 2. The upstream of the main connecting pipe 5 is welded to the side wall of the control box 2. Several auxiliary connecting pipes 6 are connected to the bottom of the upstream of the main connecting pipe 5. Each auxiliary connecting pipe 6 is equipped with a proportional electric valve 7, preferably a Siemens SKD62. The input end of each proportional electric valve 7 is connected to the output end of the control box 2. Flow meters 17 are bolted to the inner side wall of each auxiliary connecting pipe 6. Flow meters 17 are preferably Emerson F-series electromagnetic flow meters 17. The output end of each flow meter 17 is connected to the input end of the control box 2. Each component has a venturi assembly at the bottom, which includes a contraction tube section 13, a negative pressure tube section 14, and a diffuser tube section 15 from top to bottom. The top of the contraction tube section 13 is connected to the bottom of the corresponding upstream secondary connecting pipe 6, and the diffuser tube section 15 is connected to the top of the corresponding downstream secondary connecting pipe 6. Each secondary connecting pipe 6 has a fertilizer suction tube 8, the top of which is connected to the corresponding negative pressure tube section 14. A filter screen 16 is welded to the inner wall of the fertilizer suction tube 8 on the side near the negative pressure tube section 14. Each fertilizer suction tube 8 has a solenoid valve at the bottom, preferably an Airtac 2V025-08. The input end of the solenoid valve is connected to the output end of the control box 2. To ensure thorough mixing of water and fertilizer and improve crop absorption, a mixing chamber 9 is provided at the top of the metal frame 1. The inner wall of the mixing chamber 9 is coated with an anti-corrosion coating to extend its service life. A spiral mixer is provided inside the mixing chamber 9, preferably a stainless steel spiral agitator. The downstream of the auxiliary connecting pipe 6 is connected to the mixing chamber 9. The mixing chamber 9 is connected to a water outlet pipe 10, which contains a pH monitoring device 11 and an EC monitoring device 12. The pH monitoring device 11 is preferably a Hamilton IntelliCAL PHC281, and the EC monitoring device 12 is preferably a Hamilton IntelliCAL CDC401. The output terminals of both the pH monitoring device 11 and the EC monitoring device 12 are connected to the input terminal of the control box 2. The fertilizer concentration of water and fertilizer is monitored in real time through the pH monitoring device 11 and the EC monitoring device 12, so that the fertilizer concentration can be adjusted according to the monitoring data.

[0035] The specific implementation process is as follows: When fertilizing crops, water is first pumped from the inlet pipe 4 into the main connecting pipe 5 by the centrifugal water pump 3. The pressure sensor in the main connecting pipe 5 monitors the water pressure in real time and transmits the data to the control box 2. The control box 2 adjusts the water pump power according to the pressure data to maintain a stable water pressure. The water flow in the main connecting pipe 5 is then diverted to several secondary connecting pipes 6. The flow meter 17 upstream of the secondary connecting pipes 6 monitors the flow rate of each pipe in real time and feeds it back to the control box 2. The control box 2 controls the opening of the proportional electric valve 7 according to preset parameters to adjust the water flow ratio of each secondary connecting pipe 6. After the water flows through the proportional electric valve 7, it enters the main connecting pipe 6. The contraction pipe section 13 accelerates the formation of a high-speed water flow, which generates negative pressure when passing through the negative pressure pipe section 14. Fertilizer is drawn in from an external fertilizer source using the fertilizer suction pipe 8. The filter screen 16 at the top of the fertilizer suction pipe 8 filters impurities in the fertilizer to prevent pipe blockage. At the same time, the solenoid valve at the bottom of the fertilizer suction pipe 8 is controlled by the control box 2 to flexibly switch between different fertilizers or pause fertilizer suction. After the fertilizer and water flow are initially mixed in the diffusion pipe section 15, they enter the mixing chamber 9 downstream through the secondary connecting pipe 6. The spiral mixing component in the mixing chamber 9 generates centrifugal force and shear force through the rotating water flow, so that the water-fertilizer mixture is fully stirred and evenly mixed. The final mixed water and fertilizer are output through the outlet pipe 10. The pH monitoring device 11 and EC monitoring device 12 inside the outlet pipe 10 detect the acidity, alkalinity and conductivity of the water and fertilizer in real time to reflect the fertilizer concentration. The data is fed back to the control box 2. The control box 2 compares the monitored values ​​with the preset threshold and precisely controls the amount of fertilizer absorbed by dynamically adjusting the opening of each proportional electric valve 7 to ensure that the output water and fertilizer concentration is stable within the target range. At the same time, the display screen on the surface of the control box 2 displays operating parameters such as pressure, flow rate, pH, and EC in real time, which is convenient for users to monitor the status of the equipment.

[0036] Example 2: As attached Figure 1 As shown, the difference from Embodiment 1 is that, since the fertilization area is usually large, the metal frame 1 needs to be moved frequently. In order to improve the ease of movement, the bottom of the metal frame 1 is bolted with several casters 18.

[0037] The specific implementation process is as follows: The universal wheels 18 improve the ease of adjusting the position of the metal frame 1.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A smart control fertigation machine, comprising a metal frame (1), a control box (2) and a centrifugal water pump (3) fixedly connected to the top of the metal frame (1), the control box (2) and the centrifugal water pump (3) being located at the same horizontal position, characterized in that: The centrifugal water pump (3) is connected to an inlet pipe (4) on the side away from the control box (2), and to a main connecting pipe (5) on the side closer to the control box (2). The main connecting pipe (5) extends upward along the side wall of the control box (2), and the upstream of the main connecting pipe (5) is set as a horizontal structure. The upstream of the main connecting pipe (5) is fixedly connected to the side wall of the control box (2). Several auxiliary connecting pipes (6) are connected to the bottom of the upstream of the main connecting pipe (5). Each auxiliary connecting pipe (6) is equipped with a proportional electric valve (7) in its upstream. The input end of each proportional electric valve (7) is connected to... The output of the control box (2) is connected to the signal. The bottom of the proportional electric valve (7) is equipped with a venturi assembly. The auxiliary connecting pipe (6) is equipped with a fertilizer suction pipe (8). The top of the metal frame (1) is equipped with a mixing chamber (9). The downstream of the auxiliary connecting pipe (6) is connected to the mixing chamber (9). The mixing chamber (9) is connected to the outlet pipe (10). The outlet pipe (10) is equipped with a pH monitoring device (11) and an EC monitoring device (12). The output of the pH monitoring device (11) and the output of the EC monitoring device (12) are both connected to the input of the control box (2).

2. The intelligent control water and fertilizer machine according to claim 1, characterized in that: Each Venturi assembly includes a contraction tube section (13), a negative pressure tube section (14), and a diffuser tube section (15) from top to bottom. The top of the contraction tube section (13) is connected to the bottom of the upstream of the corresponding secondary connecting tube (6), and the diffuser tube section (15) is connected to the top of the downstream of the corresponding secondary connecting tube (6).

3. The intelligent control water and fertilizer machine according to claim 1, characterized in that: The mixing chamber (9) is equipped with a spiral mixing component.

4. The intelligent control water and fertilizer machine according to claim 2, characterized in that: The top of each fertilizer suction tube (8) is connected to the corresponding negative pressure tube section (14), and a filter screen (16) is fixedly connected to the inner wall of the fertilizer suction tube (8) on the side near the negative pressure tube section (14).

5. The intelligent control water and fertilizer machine according to claim 1, characterized in that: A pressure sensor is installed inside the main connecting pipe (5), and the output end of the pressure sensor is connected to the input end of the control box (2).

6. The intelligent control water and fertilizer machine according to claim 1, characterized in that: A flow meter (17) is fixedly connected to the inner wall of the upstream of the secondary connecting pipe (6), and the output end of the flow meter (17) is connected to the input end of the control box (2).

7. The intelligent control water and fertilizer machine according to claim 1, characterized in that: The bottom of the metal frame (1) is fixedly connected with several casters (18).

8. The intelligent control water and fertilizer machine according to claim 1, characterized in that: The control box (2) is equipped with a display screen, and the input end of the display screen is connected to the output end of the controller.

9. The intelligent control water and fertilizer machine according to claim 4, characterized in that: Each of the fertilizer suction pipes (8) is equipped with a solenoid valve at the bottom, and the input end of the solenoid valve is connected to the output end of the control box (2).

10. The intelligent control water and fertilizer machine according to claim 3, characterized in that: The inner wall of the mixing chamber (9) is provided with an anti-corrosion coating.

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