Water and fertilizer intelligent control system

Abstract

The utility model belongs to the technical field of agriculture and forestry equipment, and relates to a water and fertilizer intelligent control system which comprises a main conveying pipe, one end of the main conveying pipe is a water inlet connected with a water storage device, and the other end of the main conveying pipe is a water and fertilizer outlet. A fertilizer liquid conveying pump for driving fertilizer liquid to flow to the main conveying pipe is arranged at one end, close to the main conveying pipe, of the fertilizer liquid conveying main pipe, the fertilizer liquid conveying main pipe is connected with a plurality of fertilizer liquid conveying branch pipes, and inlets of the fertilizer liquid conveying branch pipes are connected with different fertilizer storage devices; a first one-way valve, a turbine flowmeter and a first electric proportional valve with an adjustable opening degree are sequentially arranged on the fertilizer liquid conveying branch pipe along the conveying direction, and the turbine flowmeter and the first electric proportional valve are electrically connected with the controller. The water and fertilizer intelligent control system provided by the utility model can be used for preparing and conveying water and fertilizer mixed liquid more accurately, and has the advantages of compact structure, high automation degree and accurate proportioning.

Description

Technical Field

[0001] This utility model belongs to the technical field of agricultural and forestry equipment, and relates to a water and fertilizer intelligent control system. 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] The aforementioned integrated water and fertilizer machine achieves automated control of electrical equipment, but the adjustment of the ratio between various fertilizers is not convenient or precise. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a water and fertilizer intelligent control system that can more accurately prepare and deliver water and fertilizer mixtures. It has the advantages of compact structure, high degree of automation, and precise proportioning.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] The intelligent water and fertilizer control system includes a main delivery pipe, one end of which is an inlet connected to a water storage device, and the other end is a water and fertilizer outlet. A fertilizer liquid delivery main pipe is connected to the main delivery pipe. A fertilizer liquid delivery pump is installed at the end of the fertilizer liquid delivery main pipe near the main delivery pipe to drive the fertilizer liquid to flow into the main delivery pipe. The fertilizer liquid delivery main pipe is connected to several fertilizer liquid delivery branch pipes. The inlets of the fertilizer liquid delivery branch pipes are connected to different fertilizer storage devices. A first check valve, a turbine flow meter, and a first electric proportional valve with adjustable opening are sequentially installed on the fertilizer liquid delivery branch pipes along the delivery direction. The turbine flow meter and the first electric proportional valve are electrically connected to the controller.

[0008] In the above-mentioned intelligent water and fertilizer control system, the water storage device can be a water tank, and the water in the water tank is transported by a water pump. The fertilizer storage device can be a fertilizer storage tank, and the bottom outlet of the fertilizer storage tank is connected to the fertilizer liquid delivery branch pipe.

[0009] In the above-mentioned intelligent water and fertilizer control system, the turbine flow meter integrates a temperature sensor and a pressure sensor, which are electrically connected to the controller.

[0010] In the above-mentioned intelligent water and fertilizer control system, the main delivery pipe is a U-shaped pipe, including an inlet section, a middle section and an outlet section. The fertilizer liquid delivery main pipe is connected to the inlet section of the main delivery pipe, and the pipes are connected by conventional elbow joints, tee joints and other common connectors.

[0011] In the aforementioned intelligent water and fertilizer control system, a pressure stabilizing tank is connected to the inlet section of the main delivery pipe. The structure of the pressure stabilizing tank adopts a conventional structure in the pipeline transportation field.

[0012] In the above-mentioned intelligent water and fertilizer control system, a flow sensor and a pressure sensor are installed on the inlet section of the main delivery pipe. The flow sensor and pressure sensor are located between the connection port of the pressure stabilizing tank and the connection port of the fertilizer liquid delivery main pipe, and the flow sensor and pressure sensor are electrically connected to the controller.

[0013] In the above-mentioned intelligent water and fertilizer control system, a return water pipe is provided between the main delivery pipe and the fertilizer liquid delivery main pipe. One end of the return water pipe is connected to the outlet section of the main delivery pipe, and the other end is connected to the end of the fertilizer liquid delivery main pipe away from the main delivery pipe. A second one-way valve and a second electric proportional valve with adjustable opening are sequentially provided on the return water pipe along the delivery direction. The second electric proportional valve is electrically connected to the controller.

[0014] In the above-mentioned intelligent water and fertilizer control system, a pH sensor and an EC sensor are installed on the return water pipe. The pH sensor and EC sensor are located upstream of the second one-way valve and are electrically connected to the controller.

[0015] In the above-mentioned intelligent water and fertilizer control system, all pipelines are installed on pipe racks, and the controller is installed separately on one side of the pipe rack. The pipe rack has a double-layer structure. The lower pipe rack is equipped with the main delivery pipe, fertilizer solution delivery pump and pressure stabilizing tank, while the upper pipe rack is equipped with parallel fertilizer solution delivery branch pipes and return water pipes. The inlet and outlet of the main delivery pipe and the inlet of the fertilizer solution delivery branch pipe all face the same side.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. This utility model provides a water and fertilizer intelligent control system. It comprises an adjustable fertilizer solution preparation unit consisting of a fertilizer solution delivery branch pipe, a one-way valve, a turbine flow meter, and an adjustable electric proportional 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 water and fertilizer intelligent control system. This utility model uses a controller to uniformly adjust the opening of the electric proportional valve and monitors the delivery status of each component in real time. It has the advantages of compact structure, high degree of automation, and precise ratio.

[0018] 2. This utility model further provides a water return system, which can redirect a portion of the liquid transported by the main delivery pipe back to the fertilizer solution delivery main pipe. Even when the electric proportional valve of the fertilizer solution preparation unit is reduced or even closed, the fertilizer solution delivery pump can still operate normally. Simultaneously, the water return system is also equipped with a check valve and an electric proportional valve, which can better coordinate with the fertilizer solution preparation unit. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the present invention (excluding the pipe rack and controller);

[0021] Figure 3 yes Figure 2 A 3D view from another angle;

[0022] Reference numerals in the attached diagram: 1. Main delivery pipe; 2. Inlet; 3. Water and fertilizer outlet; 4. Main fertilizer solution delivery pipe; 5. Fertilizer solution delivery pump; 6. Branch fertilizer solution delivery pipe; 7. First check valve; 8. Turbine flow meter; 9. First electric proportional valve; 10. Controller; 11. Pressure stabilizing tank; 12. Flow sensor; 13. Pressure sensor; 14. Return water pipe; 15. Second check valve; 16. Second electric proportional valve; 17. pH sensor; 18. EC sensor; 19. Pipe support. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-3 :

[0024] The water and fertilizer intelligent control system includes a main delivery pipe 1. One end of the main delivery pipe 1 is an inlet 2 connected to a water storage device, and the other end is a water and fertilizer outlet 3. A fertilizer liquid delivery main pipe 4 is connected to the main delivery pipe 1. A fertilizer liquid delivery pump 5 is installed at the end of the fertilizer liquid delivery main pipe 4 near the main delivery pipe 1 to drive the fertilizer liquid to flow to the main delivery pipe 1. The fertilizer liquid delivery main pipe 4 is connected to several fertilizer liquid delivery branch pipes 6. The inlet of the fertilizer liquid delivery branch pipe 6 is connected to different fertilizer storage devices. A first one-way valve 7, a turbine flow meter 8, and a first electric proportional valve 9 with adjustable opening are sequentially arranged on the fertilizer liquid delivery branch pipe 6 along the delivery direction. The turbine flow meter and the first electric proportional valve 9 are electrically connected to the controller 10.

[0025] In this embodiment, the controller 10 adjusts the opening of each first electric proportional valve 9 to precisely control the flow rate of each fertilizer solution delivery branch pipe 6. Simultaneously, the first one-way valve 7 prevents backflow of fertilizer solutions, and a turbine flow meter monitors the delivery status of each fertilizer solution in real time to ensure precise control. Referring to the attached drawings, this embodiment has five independent fertilizer solution configuration units, which can configure up to five different fertilizer solutions. Of course, some of these fertilizer solution configuration units can also be shut off using the electric proportional valve 9. After the equipment is started, the power unit (such as a water pump) drives water from the water storage device (such as a water tank) into the main delivery pipe 1 through the inlet 2 and out through the fertilizer-water outlet 3. The fertilizer solution delivery pump 5 drives each fertilizer storage device (such as a fertilizer tank or other device for preparing or storing liquid fertilizer) to enter the main delivery pipe 1 through its corresponding fertilizer solution delivery branch pipe 6. The fertilizer solution entering the main delivery pipe 1 is then output along with the water through the fertilizer-water outlet 3.

[0026] The turbine flow meter integrates a temperature sensor and a pressure sensor 13. The temperature sensor and the pressure sensor 13 are electrically connected to the controller 10. The temperature sensor is used to monitor the temperature of the fertilizer solution in real time, and the pressure sensor 13 is used to monitor the pressure of the fertilizer solution in real time. The above data, together with the flow data monitored by the turbine flow meter, can better monitor the delivery of the fertilizer solution.

[0027] The main delivery pipe 1 is a U-shaped pipe, including an inlet section, a middle section and an outlet section. The fertilizer liquid delivery main pipe 4 is connected to the inlet section of the main delivery pipe 1. The pipes are connected by conventional bend joints, tee joints and other common connectors.

[0028] In order to stabilize the pipeline pressure, a pressure stabilizing tank 11 is connected to the inlet section of the main delivery pipe 1. The structure of the pressure stabilizing tank 11 adopts the conventional structure in the field of pipeline transportation.

[0029] A flow sensor 12 and a pressure sensor 13 are installed on the inlet section of the main delivery pipe 1. The flow sensor 12 and the pressure sensor 13 are located between the connection port of the pressure stabilizing tank 11 and the connection port of the fertilizer liquid delivery main pipe 4. The flow sensor 12 and the pressure sensor 13 are electrically connected to the controller 10. The flow sensor 12 and the pressure sensor 13 are used to detect the water delivery status in real time.

[0030] To ensure the normal operation of the equipment, this embodiment also includes a water return system. Specifically, a water return pipe 14 is provided between the main conveying pipe 1 and the fertilizer solution conveying main pipe 4. One end of the water return pipe 14 is connected to the outlet section of the main conveying pipe 1, and the other end is connected to the end of the fertilizer solution conveying main pipe 4 away from the main conveying pipe 1. A second one-way valve 15 and a second electric proportional valve 16 with adjustable opening are sequentially provided on the water return pipe 14 along the conveying direction. The second electric proportional valve 16 is electrically connected to the controller 10.

[0031] The operation of the return water system in this embodiment is as follows: a portion of the water in the main delivery pipe 1 enters the return water pipe 14 under water pressure, passes through the second one-way valve 15 and the second electric proportional valve 16 in sequence, and returns to the fertilizer solution delivery main pipe 4, where it is transported together with the fertilizer solution. The amount of return water can be controlled by adjusting the opening of the second electric actuator valve through the controller 10. Generally speaking, the larger the amount of fertilizer solution input, the smaller the return water opening is used. In extreme cases, when the fertilizer solution delivery is stopped, the return water system can still ensure the normal operation of the equipment. At this time, the equipment only delivers irrigation water.

[0032] A pH sensor 17 and an EC sensor 18 are installed on the aforementioned return water pipe 14. The pH sensor 17 and EC sensor 18 are located upstream of the second one-way valve 15 and are electrically connected to the controller 10. The pH sensor 17 and EC sensor 18 are used to detect the condition of water and fertilizer solution after mixing in real time.

[0033] In this embodiment, all pipes are installed on the pipe rack 19, and the controller 10 is installed separately on one side of the pipe rack 19. The pipe rack 19 has a double-layer structure. The lower pipe rack 19 is equipped with the main delivery pipe 1, the fertilizer solution delivery pump 5 and the pressure stabilizing tank 11. The upper pipe rack 19 is equipped with parallel fertilizer solution delivery branch pipes 6 and return water pipes 14. The inlet 2 and the water and fertilizer outlet 3 of the main delivery pipe 1, and the inlet of the fertilizer solution delivery branch pipe 6 all face the same side.

[0034] 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 and fertilizer intelligent control system, comprising a main delivery pipe (1), one end of which is a water inlet (2) connected to a water storage device, and the other end of which is a water and fertilizer outlet (3). A fertilizer liquid delivery main pipe (4) is connected to the main delivery pipe (1), and a fertilizer liquid delivery pump (5) is provided at the end of the fertilizer liquid delivery main pipe (4) near the main delivery pipe (1) to drive the fertilizer liquid to flow to the main delivery pipe (1). The system is characterized in that... The main fertilizer delivery pipe (4) is connected to several fertilizer delivery branch pipes (6). The inlet of each fertilizer delivery branch pipe (6) is connected to a different fertilizer storage device. A first check valve (7), a turbine flow meter (8), and a first electric proportional valve (9) with adjustable opening are sequentially arranged on the fertilizer delivery branch pipe (6) along the delivery direction. The turbine flow meter (8) and the first electric proportional valve (9) are electrically connected to the controller (10).

2. The water and fertilizer intelligent control system according to claim 1, characterized in that, The turbine flow meter (8) integrates a temperature sensor and a pressure sensor, which are electrically connected to the controller.

3. The intelligent water and fertilizer control system according to claim 1, characterized in that, The main delivery pipe (1) is a U-shaped pipe, including an inlet section, a middle section and an outlet section, and the fertilizer liquid delivery main pipe (4) is connected to the inlet section of the main delivery pipe (1).

4. The water and fertilizer intelligent control system according to claim 3, characterized in that, A pressure stabilizing tank (11) is connected to the inlet section of the main delivery pipe (1).

5. The water and fertilizer intelligent control system according to claim 4, characterized in that, A flow sensor (12) and a pressure sensor (13) are installed on the inlet section of the main delivery pipe (1). The flow sensor (12) and the pressure sensor (13) are located between the connection port of the pressure stabilizing tank (11) and the connection port of the fertilizer liquid delivery main pipe (4). The flow sensor (12) and the pressure sensor (13) are electrically connected to the controller.

6. The water and fertilizer intelligent control system according to claim 3, characterized in that, A return water pipe (14) is provided between the main delivery pipe (1) and the fertilizer liquid delivery main pipe (4). One end of the return water pipe (14) is connected to the outlet section of the main delivery pipe (1), and the other end is connected to the end of the fertilizer liquid delivery main pipe (4) away from the main delivery pipe (1). A second one-way valve (15) and a second electric proportional valve (16) with adjustable opening are sequentially provided on the return water pipe (14) along the delivery direction. The second electric proportional valve (16) is electrically connected to the controller (10).

7. The water and fertilizer intelligent control system according to claim 6, characterized in that, A pH sensor (17) and an EC sensor (18) are installed on the return water pipe (14). The pH sensor (17) and EC sensor (18) are located upstream of the second check valve (15). The pH sensor (17) and EC sensor (18) are electrically connected to the controller.

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