Differential pressure type water and fertilizer control system

Abstract

The application discloses a differential pressure type water and fertilizer control system, comprising: an electric proportional valve provided with a first liquid inlet and a first liquid outlet; the liquid inlet pipeline is communicated with the first liquid inlet; the liquid outlet pipeline is communicated with the first liquid outlet and is used for outputting liquid required by irrigation or fertilization; the fertilizer storage assembly comprises a fertilizer storage container and a fertilizer inlet pipeline with a first electric valve, the fertilizer storage container is further provided with a second liquid inlet and a second liquid outlet, the second liquid inlet is communicated with the liquid inlet pipeline through the fertilizer inlet pipeline, and the second liquid outlet is communicated with the liquid outlet pipeline; the first electric valve is used for controlling the opening and closing of the fertilizer inlet pipeline; the electric proportional valve is used for adjusting the opening and closing proportion, so that pressure difference is formed between liquid of the first liquid inlet and liquid of the first liquid outlet, and the liquid flows from the liquid inlet pipeline to the fertilizer inlet pipeline and enters the fertilizer storage container. According to the technical scheme, control over irrigation and differential pressure fertilization of the differential pressure type water and fertilizer control system can be achieved only through cooperation of one electric valve and one electric proportional valve.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural devices, and in particular to a pressure differential water and fertilizer control system. Background Art

[0002] Integrated water and fertilizer technology, also known as water-saving fertigation, is a modern, advanced agricultural technique that combines drip irrigation with fertilization. This technology leverages the water in the irrigation system as a carrier, fertilizing simultaneously during irrigation. This achieves integrated water and fertilizer utilization and management, ensuring that water and fertilizer are optimally combined in the soil for crop absorption and utilization.

[0003] Water-saving fertilization technology is mainly implemented through a water-saving fertilization system. In related technologies, the water-saving fertilization system mainly uses the structure of multiple valves to coordinate and generate a small pressure difference in different parts of the main pipeline, so that a part of the water flow in the main pipeline flows into the fertilizer tank. After the fertilizer in the tank is dissolved to obtain a fertilizer solution, the fertilizer solution re-enters the main pipeline through another thin tube to achieve pressure differential fertilization operation. However, in actual use, it is found that this pressure differential fertilization method requires the simultaneous control of multiple valves to achieve the control of irrigation and pressure differential fertilization. The operation steps are numerous and can easily cause a lot of inconvenience to the relevant operators. Utility Model Content

[0004] The embodiment of the present application provides a pressure differential water and fertilizer control system, which aims to improve the existing pressure differential fertilization method. It is necessary to simultaneously control the operation of multiple valves to achieve the control of irrigation and pressure differential fertilization. The operation steps are numerous and it is easy to cause many inconveniences to the relevant operators. Technical problems.

[0005] To this end, the embodiment of the present application provides a pressure differential water and fertilizer control system, including an electric proportional valve, a liquid inlet pipe, a liquid outlet pipe, and a fertilizer storage component, wherein:

[0006] The electric proportional valve is provided with a first liquid inlet and a first liquid outlet;

[0007] The liquid inlet pipe is connected to the first liquid inlet;

[0008] The liquid outlet pipe is connected to the first liquid outlet and is used to output the liquid required for irrigation or fertilization;

[0009] The fertilizer storage assembly includes a fertilizer storage container and a fertilizer inlet pipeline with a first electric valve, the fertilizer storage container is further provided with a second liquid inlet and a second liquid outlet, the second liquid inlet is connected to the liquid inlet pipeline through the fertilizer inlet pipeline, and the second liquid outlet is connected to the liquid outlet pipeline;

[0010] The first electric valve is used to control the connection and closing of the fertilizer inlet pipeline; the electric proportional valve is used to adjust the opening and closing ratio to form a pressure difference between the liquid in the first liquid inlet and the first liquid outlet, so that the liquid flows from the liquid inlet pipe to the fertilizer inlet pipeline and enters the fertilizer storage container.

[0011] Optionally, in some embodiments of the present application, a pressure detection component is further included, and the pressure detection component is arranged adjacent to the first liquid outlet to detect the liquid pressure at the first liquid outlet.

[0012] Optionally, in some embodiments of the present application, a first control mechanism is further included, which is electrically connected to the pressure detection component, the electric proportional valve and the first electric valve, respectively, and is used to adjust the opening and closing ratio of the electric proportional valve and control the connection and closing of the first electric valve according to the liquid pressure detected by the pressure detection component.

[0013] Optionally, in some embodiments of the present application, the electric proportional valve includes a valve body and a valve core, the valve body is connected to the first control mechanism, the valve core is arranged inside the valve body, the valve core includes a first connecting member, the first control mechanism includes a driving assembly, the driving assembly includes a second connecting member, the first connecting member and the second connecting member are connected, and the driving assembly drives the second connecting member to rotate, so as to drive the valve core to rotate relative to the valve body to adjust the opening and closing ratio of the electric proportional valve.

[0014] Optionally, in some embodiments of the present application, the fertilizer storage assembly further includes a first fertilizer outlet pipeline with a one-way valve, and the second liquid outlet is connected to the liquid outlet pipe through the first fertilizer outlet pipeline.

[0015] Optionally, in some embodiments of the present application, the fertilizer storage assembly further includes a conductivity sensor, a probe of the conductivity sensor is built into the first fertilizer outlet pipeline, and is used to detect the conductivity of the liquid in the first fertilizer outlet pipeline.

[0016] Optionally, in some embodiments of the present application, the fertilizer storage assembly further includes a pH sensor, a probe of which is built into the first fertilizer outlet pipeline for detecting the pH of the liquid in the first fertilizer outlet pipeline.

[0017] Optionally, in some embodiments of the present application, the fertilizer storage assembly further includes a composite sensor, the composite sensor including a first detection probe and a second detection probe, wherein:

[0018] The first detection probe is built into the first fertilizer outlet pipeline and is used to detect the conductivity of the liquid in the first fertilizer outlet pipeline;

[0019] The second detection probe is built into the first fertilizer outlet pipeline and is used to detect the pH value of the liquid in the first fertilizer outlet pipeline.

[0020] Optionally, in some embodiments of the present application, the fertilizer storage component further includes a second fertilizer outlet pipeline with a second electric valve, the second liquid outlet is connected to the liquid outlet pipe through the second fertilizer outlet pipeline, the second electric valve is also electrically connected to the first control mechanism, and the first control mechanism is also used to control the connection and closing of the second electric valve according to the liquid pressure detected by the pressure detection component.

[0021] Optionally, in some embodiments of the present application, two or more fertilizer storage components are included, and the pressure differential water-fertilizer control system also includes a second control mechanism, which is electrically connected to each of the first electric valves and each of the composite sensors respectively, and the second control mechanism is also used to control the connection and closing of each of the first electric valves according to the conductivity detection results and pH detection results of each of the composite sensors.

[0022] Optionally, in some embodiments of the present application, a first adapter is included, which is connected between the liquid inlet pipe and the first liquid inlet, and the fertilizer inlet pipeline is connected to one end of the liquid inlet pipe through one of the first branch connecting ports of the first adapter.

[0023] Optionally, in some embodiments of the present application, a second adapter is included, which is connected between the liquid outlet pipe and the first liquid outlet, and the first fertilizer outlet pipeline is connected to one end of the liquid outlet pipe through one of the second branch connecting ports of the second adapter.

[0024] Optionally, in some embodiments of the present application, the second liquid inlet is arranged adjacent to the bottom of the fertilizer storage container, and the second liquid outlet is arranged adjacent to the top of the fertilizer storage container.

[0025] The pressure differential water-fertilizer control system provided by the technical solution of the present application, through the above-mentioned structural setting, when the pressure differential water-fertilizer control system needs to perform irrigation control, it only needs to start the first electric valve to accurately control the closure of the fertilizer inlet pipeline, and start the electric proportional valve and accurately control the opening and closing ratio of the electric proportional valve to adjust the water flow, and then transport it to the irrigation system through the outlet pipeline to complete the corresponding irrigation control. When the pressure differential water-fertilizer control system needs to perform pressure differential fertilization control, it only needs to start the first electric valve to accurately control the connection of the fertilizer inlet pipeline, and start the electric proportional valve and control the opening and closing ratio of the electric proportional valve to partially close the first outlet of the electric proportional valve, so that a pressure difference is formed between the liquid in the first inlet and the first outlet of the electric proportional valve, so that part of the liquid in the inlet pipeline flows to the fertilizer inlet pipeline and enters the fertilizer storage container, dissolves the fertilizer in the container to obtain a fertilizer solution, and then the fertilizer solution flows back into the outlet pipeline to be transported to the irrigation system through the outlet pipeline to complete the corresponding pressure differential fertilization control. In this way, this technical solution can achieve the control of irrigation and pressure differential fertilization of the pressure differential water and fertilizer control system through the cooperation of only one electric valve and one electric proportional valve, thereby significantly reducing the relevant operating steps and bringing great convenience to the relevant operators. It can be seen that this technical solution can effectively improve the existing pressure differential fertilization method, which requires the simultaneous control of multiple valves to achieve the control of irrigation and pressure differential fertilization, and has many operating steps, which easily brings many inconveniences to the relevant operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a pressure differential water and fertilizer control system provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 The connection principle diagram of the pressure differential water and fertilizer control system shown;

[0029] Figure 3 for Figure 1 The partial structural diagram of the pressure differential water and fertilizer control system shown;

[0030] Figure 4 for Figure 1 The cross-sectional structural diagram of the electric proportional valve of the pressure differential water and fertilizer control system shown in FIG.

[0031] Figure 5 Another structural diagram of the pressure differential water and fertilizer control system provided in an embodiment of the present application;

[0032] Figure 6 for Figure 5 A structural diagram of the first adapter of the pressure differential water and fertilizer control system shown;

[0033] Figure 7 for Figure 6 A schematic structural diagram of two nested arrangements of the first adapter;

[0034] Figure 8 for Figure 5 A structural diagram of the second adapter of the pressure differential water and fertilizer control system shown;

[0035] Figure 9 for Figure 8 The partial cross-sectional structural diagram of the second adapter is shown.

[0036] Description of Figure Numbers:

[0037] 1. Pressure differential water and fertilizer control system; 100. Electric proportional valve; 110. Valve body; 111. First liquid inlet; 112. First liquid outlet; 120. Valve core; 121. First connector; 122. Liquid channel; 200. Liquid inlet pipe; 300. Liquid outlet pipe; 400. Fertilizer storage assembly; 410. Fertilizer storage container; 411. Removable cover; 420. Fertilizer inlet pipe; 421. First electric valve; 430. First fertilizer outlet pipe; 431. One-way valve ; 440, composite sensor; 441, first detection probe; 442, second detection probe; 500, pressure detection assembly; 510, air pressure detection assembly; 511, air pipe; 512, air pipe connector; 600, first control mechanism; 700, first adapter; 710, first tube body connection part; 720, first branch connection port; 800, second adapter; 810, first tube body connection part; 820, second branch connection port; 830, three-way connector.

[0038] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] In one embodiment, Figures 1 to 4 As shown, an embodiment of the present application provides a pressure differential water-fertilizer control system 1. The pressure differential water-fertilizer control system 1 may specifically include an electric proportional valve 100, a liquid inlet pipe 200, a liquid outlet pipe 300, and a fertilizer storage assembly 400. The electric proportional valve 100 is specifically provided with a first liquid inlet 111 and a first liquid outlet 112. The liquid inlet pipe 200 is connected to the first liquid inlet 111. The liquid outlet pipe 300 is connected to the first liquid outlet 112 and is mainly used to output liquid required for irrigation or fertilization. The fertilizer storage assembly 400 may specifically include a fertilizer storage container 410 and a fertilizer inlet pipe 420 with a first electric valve 421. The fertilizer storage container 410 is also provided with a second liquid inlet and a second liquid outlet. The second liquid inlet is connected to the liquid inlet pipe 200 via the fertilizer inlet pipe 420, and the second liquid outlet is connected to the liquid outlet pipe 300. The first electric valve 421 is used to control the connection and closing of the fertilizer inlet pipe 420. The electric proportional valve 100 is used to adjust the opening and closing ratio to form a pressure difference between the liquid in the first liquid inlet 111 and the first liquid outlet 112, so that the liquid flows from the liquid inlet pipe 200 to the fertilizer inlet pipe 420 and enters the fertilizer storage container 410.

[0043] It is understandable that the pressure differential water-fertilizer control system 1 of the embodiment of the present application can be specifically applied to water-saving irrigation and fertilization technology, by means of an irrigation system, using the water in the irrigation system as a carrier, fertilizing while irrigating, realizing the integrated utilization and management of water and fertilizer, so that water and fertilizer are supplied to crops in an optimized combination state in the soil for absorption and utilization. In order to make the outer side of the first liquid inlet 111, the outer side of the first liquid outlet 112, the outer side of the second liquid inlet and the outer side of the second liquid outlet better docking and communicating with the corresponding pipeline or pipe, the shape of the first liquid inlet 111, the shape of the first liquid outlet 112, the shape of the second liquid inlet and the shape of the second liquid outlet are generally roughly circular, or other shapes that can well realize the connection between the corresponding pipeline or pipe and the installation cavity, including but not limited to semicircular, elliptical, polygonal and other shapes. The first electric valve 421 mentioned above can specifically be an electric valve structure such as a solenoid valve, an electric butterfly valve, or an electric gate valve. A solenoid valve with higher control accuracy can be used so that it can accurately control the connection and closing of the fertilizer inlet pipeline 420 while better cooperating with the electric proportional valve 100 to achieve the linkage control between the two mentioned later. The electric proportional valve 100 mentioned above can specifically be an electric ball valve, an electric butterfly valve, an electric gate valve, or other valve structures that can control the opening and closing ratio to control the flow rate. An electric ball valve with higher control accuracy can be used. In addition, the fertilizer storage container 410 mentioned in the embodiment of the present application is mainly a tank structure, or other container structure that can realize fertilizer storage.

[0044] In this way, the pressure differential water-fertilizer control system 1 provided in the embodiment of the present application, through the above-mentioned structural setting, when the pressure differential water-fertilizer control system 1 needs to perform irrigation control, it only needs to start the first electric valve 421 to accurately control the closure of the fertilizer inlet pipeline 420, and at the same time, start the electric proportional valve 100 and control the opening and closing ratio of the electric proportional valve 100 to adjust the water flow size, and then transport it to the irrigation system through the liquid outlet pipe 300 to complete the corresponding irrigation control. When the pressure differential water and fertilizer control system 1 needs to perform pressure differential fertilization control, it is only necessary to start the first electric valve 421 to accurately control the connection of the fertilizer inlet pipe 420, and at the same time, start the electric proportional valve 100 and accurately control the opening and closing ratio of the electric proportional valve 100, so that the first liquid outlet of the electric proportional valve 100 is partially closed, so that a pressure difference is formed between the liquid in the first liquid inlet 111 and the first liquid outlet 112 of the electric proportional valve 100, so that part of the liquid in the liquid inlet pipe 200 flows to the fertilizer inlet pipe 420 and enters the fertilizer storage container 410, dissolving the fertilizer in the container to obtain a fertilizer solution, and then the fertilizer solution flows back into the liquid outlet pipe 300 to be transported to the irrigation system via the liquid outlet pipe 300, thereby completing the corresponding pressure differential fertilization control. It can be seen that the pressure differential water and fertilizer control system 1 of the embodiment of the present application can realize the control of irrigation and pressure differential fertilization by only cooperating with an electric valve and an electric proportional valve 100, thereby greatly reducing the relevant operation steps and bringing great convenience to the relevant operators.

[0045] During the specific fertilization process, the electric proportional valve and the first electric valve are both opened, and the liquid flowing into the liquid inlet pipe can be water. The water flows to the electric proportional valve through the liquid inlet pipe. By controlling the opening and closing ratio of the electric proportional valve, part of the first liquid outlet of the electric proportional valve is closed, so that a pressure difference is formed between the first liquid inlet and the first liquid outlet of the electric proportional valve, so that part of the water at the first liquid inlet flows to the fertilizer inlet pipe and enters the fertilizer storage container. After the water enters the fertilizer storage container, it dissolves with the fertilizer in the fertilizer storage container to form water-fertilizer. The water-fertilizer comes out of the fertilizer outlet of the fertilizer storage container and can flow to the liquid outlet pipe through the first fertilizer outlet pipe, and then flow to the fertilization end through the liquid outlet pipe.

[0046] In some examples, such as Figure 1 and Figure 2As shown, the pressure differential water-fertilizer control system 1 specifically further includes a pressure detection component 500, which is disposed adjacent to the first liquid outlet 112 and is used to detect the liquid pressure at the first liquid outlet 112. In this way, the pressure detection component 500 can accurately detect the liquid pressure at the first liquid outlet 112, so that relevant operators can accurately know the liquid pressure at the first liquid outlet 112 in real time. When the liquid pressure at the first liquid outlet 112 changes, the opening and closing ratio of the electric proportional valve 100 is accurately controlled accordingly to ensure that the pressure difference of the main pipeline (including the liquid inlet pipeline 200 and the liquid outlet pipeline 300) before and after the electric proportional valve 100 is constant, thereby ensuring that the amount of water flowing through the fertilizer storage container 410 is constant, thereby achieving timed and quantitative fertilization.

[0047] It can be understood that the pressure detection component 500 mentioned in this example generally includes a pressure sensor, which can be any one of a strain gauge pressure sensor, a piezoelectric pressure sensor, and a capacitive pressure sensor.

[0048] like Figure 3 As shown, the pressure detection component can be specifically an air pressure detection component 510, which includes an air pressure sensor (not shown), an air pipe 511 and an air pipe connector 512. The air pressure sensor can be set on the first control mechanism 600, and the air pressure sensor is connected through one end of the air pipe 510, and the other end of the air pipe 510 is connected to the air pipe connector 512 on the valve body 110, so as to detect the liquid pressure at the first liquid outlet 112 by detecting the air pressure.

[0049] In some examples, such as Figure 1 and Figure 2As shown, the pressure differential water and fertilizer control system 1 specifically further includes a first control mechanism 600, which is electrically connected to the pressure detection component 500, the electric proportional valve 100 and the first electric valve 421, respectively, and is used to adjust the opening and closing ratio of the electric proportional valve 100 and control the connection and closing of the first electric valve 421 according to the liquid pressure detected by the pressure detection component 500. In this way, through the above-mentioned structural setting, the electric proportional valve 100 arranged between the liquid inlet pipe 200 and the liquid outlet pipe 300 and the first electric valve 421 arranged on the fertilizer inlet pipe 420 can both be automatically controlled and linked by the first control mechanism 600 valve, that is, when the pressure detection component 500 detects a change in the liquid pressure at the first liquid outlet 112, it can automatically and accurately control the opening and closing ratio of the electric proportional valve 100, and automatically control the connection and closing of the first electric valve 421, so as to achieve the effect of automatically and in real time adjusting the pressure of the main pipe (including the liquid inlet pipe 200 and the liquid outlet pipe 300) and the pressure of the fertilizer storage container 410, so as to ensure that the pressure difference of the main pipe (including the liquid inlet pipe 200 and the liquid outlet pipe 300) before and after the electric proportional valve 100 is constant, so as to ensure that the amount of water flowing through the fertilizer storage container 410 is constant, thereby realizing timed and quantitative fertilization and ensuring uniform irrigation.

[0050] It is understood that the first control mechanism 600 mentioned in this example can be specifically a control box to achieve coordinated control of the electric proportional valve 100 and the first electric valve 421. Those skilled in the art will appreciate that the control mechanism 600 can also include multiple independently arranged control components to achieve separate electric control of the electric proportional valve 100 and the first electric valve 421.

[0051] In some examples, such as Figure 1 、 Figure 3 and Figure 4 As shown, the electric proportional valve 100 may specifically include a valve body 110 and a valve core 120. The valve body 110 is connected to the first control mechanism 600. The valve core 120 is disposed inside the valve body 110. The valve core 120 includes a first connecting member 121. The first control mechanism 600 may specifically include a drive assembly, which includes a second connecting member. The first connecting member 121 is connected to the second connecting member. The drive assembly drives the second connecting member to rotate, thereby driving the valve core 120 to rotate relative to the valve body 110 to adjust the opening and closing ratio of the electric proportional valve 100. In this way, through the above-mentioned structural arrangement, the first control mechanism 600 can adjust the opening and closing ratio of the electric proportional valve 100 by driving the valve core 120 to rotate relative to the valve body 110 according to actual control needs through the drive assembly.

[0052] It is understandable that the drive assembly in this example can be specifically a motor power assembly. In this case, the first connecting member 121 can be specifically a transmission rod, and the second connecting member can be specifically a motor shaft. The two can be coaxially connected through a structure such as a coupling, so that when the motor power assembly drives the motor shaft to rotate, it synchronously drives the transmission rod to rotate, and then drives the valve core 120 to rotate relative to the valve body 110 through the transmission rod. To facilitate the installation and rotation of the valve core 120 in the valve body 110, the interior of the valve body 110 is generally hollow to form an installation cavity therein to install the valve core 120. At the same time, the inner side of the first liquid inlet 111 and the inner side of the first liquid outlet 112 mentioned above should both be connected to the installation cavity. The valve core 120 mentioned in this example is generally roughly spherical, or other rotatable shapes, including but not limited to hemispherical, cylindrical, polygonal cylinder and the like. In order to facilitate the valve core 120 to have sufficient rotation space in the installation cavity, the shape of the main part of the installation cavity is generally adapted to the outer shape of the valve core 120, and the dimensions in all aspects are slightly larger than the valve core 120, to ensure that the valve core 120 can smoothly rotate accordingly in the installation cavity. In addition, a liquid channel 122 is provided through the valve core 120, the inlet of the liquid channel 122 is roughly toward the side where the first liquid inlet 111 is located, and the outlet of the liquid channel 122 is roughly toward the side where the first liquid outlet 112 is located. In this way, the proportion of the portion of the inlet of the liquid channel 122 facing the first liquid inlet 111 can be adjusted by rotating the valve core 120 relative to the valve body 110, thereby realizing the adjustment operation of the opening and closing ratio of the electric proportional valve 100.

[0053] In some examples, such as Figure 1 and Figure 2 As shown, the fertilizer storage assembly 400 also includes a first fertilizer outlet pipe 430 with a one-way valve 431. The second liquid outlet is connected to the liquid outlet pipe 300 via the first fertilizer outlet pipe 430. The one-way valve 431 and the first fertilizer outlet pipe 430 allow the fertilizer solution exiting the second liquid outlet of the fertilizer storage container 410 to be quickly transported to the liquid outlet pipe 300 via the first fertilizer outlet pipe 430. This effectively prevents liquid in the liquid outlet pipe 300 from flowing back into the fertilizer storage container 410 during fertilizer addition. This eliminates the need for unnecessary operations when adding fertilizer to the first fertilizer storage container 410; simply open the fertilizer storage container 410.

[0054] In some examples, such as Figure 1As shown, the fertilizer storage assembly 400 also includes a conductivity sensor (not shown). The probe of the conductivity sensor is built into the first fertilizer outlet pipeline 430 and is primarily used to detect the conductivity of the liquid in the first fertilizer outlet pipeline 430. Thus, the conductivity sensor can monitor the conductivity of the liquid in the first fertilizer outlet pipeline 430 to monitor the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430. When the conductivity value gradually decreases and approaches a constant value, it indicates that the fertilizer in the fertilizer storage container 410 has been used up and the relevant operator needs to replenish the fertilizer in time or switch the fertilizer storage container 410.

[0055] In some examples, such as Figure 1 As shown, the fertilizer storage assembly 400 further includes a pH sensor (not shown), the probe of which is built into the first fertilizer outlet pipeline 430 and is used to detect the pH of the liquid in the first fertilizer outlet pipeline 430. Thus, the pH sensor can detect the pH of the liquid in the first fertilizer outlet pipeline 430 to detect the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430. When the pH value gradually decreases and tends to be constant, it indicates that the fertilizer in the fertilizer storage container 410 has been used up and the relevant operator needs to replenish the fertilizer in time or switch the fertilizer storage container 410.

[0056] In some examples, such as Figure 1 、 Figure 2 、 Figure 8 and Figure 9 As shown, the fertilizer storage assembly 400 also includes a composite sensor 440, which includes a first detection probe 441 and a second detection probe 442. The first detection probe 441 is built into the first fertilizer outlet pipeline 430 and is primarily used to detect the electrical conductivity of the liquid in the first fertilizer outlet pipeline 430. The second detection probe 442 is built into the first fertilizer outlet pipeline 430 and is primarily used to detect the pH of the liquid in the first fertilizer outlet pipeline 430. In this way, the composite sensor 440 can simultaneously detect the electrical conductivity and pH of the liquid in the first fertilizer outlet pipeline 430 to determine the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430. When the conductivity and pH values gradually decrease and become constant, it indicates that the fertilizer in the fertilizer storage container 410 has been depleted and the operator needs to promptly replenish the fertilizer or switch the fertilizer storage container 410. Compared to the previous examples in which the conductivity sensor only detects the conductivity of the liquid in the first fertilizer outlet pipeline 430 to detect the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430, or the pH sensor only detects the pH of the liquid in the first fertilizer outlet pipeline 430 to detect the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430, the composite sensor 440 of this example can simultaneously detect the conductivity and pH of the liquid in the first fertilizer outlet pipeline 430, thereby more accurately detecting the concentration of the fertilizer liquid in the first fertilizer outlet pipeline 430.

[0057] In some examples, such as Figure 1As shown, the fertilizer storage assembly 400 also includes a second fertilizer outlet pipeline with a second electric valve. The second liquid outlet is connected to the liquid outlet pipeline 300 through the second fertilizer outlet pipeline. The second electric valve is also electrically connected to the first control mechanism 600. The first control mechanism 600 is also used to control the connection and closing of the second electric valve based on the liquid pressure detected by the pressure detection assembly 500. In this way, during the process of adding fertilizer to the first fertilizer storage container 410, the timely closing of the second electric valve can effectively prevent the liquid in the liquid outlet pipeline 300 from flowing back into the fertilizer storage container 410 through the second fertilizer outlet pipeline.

[0058] It is understood that the second electric valve mentioned in this example can have the same structural configuration as the first electric valve 421 and will not be described in detail here. Similarly, the second fertilizer outlet pipeline can also be equipped with the same conductivity sensor, pH sensor, and composite sensor 440 as in the above example. Their functions and effects can be referred to above and will not be described in detail here.

[0059] In some examples, such as Figure 5 As shown, the differential pressure water and fertilizer control system 1 includes two or more fertilizer storage components 400, and the differential pressure water and fertilizer control system 1 also includes a second control mechanism, which is electrically connected to each first electric valve 421 and each composite sensor 440. The second control mechanism is also used to control the connection and closing of each first electric valve 421 based on the conductivity detection results and pH detection results of each composite sensor 440. In this way, through the above-mentioned structural arrangement, the differential pressure water and fertilizer control system 1 of the system can be expanded to a multi-channel structure layout with multiple fertilizer storage components 400. This structural layout not only increases the amount of fertilizer applied, avoiding frequent fertilization and personnel monitoring during peak crop fertilization periods or when large areas of rotation irrigation require more fertilizer, but also allows multiple types of fertilizer to be applied at a time, with each type of fertilizer provided with a fertilizer storage container 410. Then, based on the growth conditions of the crops in the required fertilization plots, the required type of fertilizer or several types of fertilizers that are in short supply can be accurately and quantitatively delivered, further improving the efficiency and effectiveness of fertilization.

[0060] It can be understood that the second control mechanism mentioned in this example can be a structure independent of the first control mechanism 600, or it can be the same control mechanism as the first control mechanism 600. In this way, it is easy to realize the integrated automatic control of the pressure differential water and fertilizer control system 1.

[0061] In some examples, such as Figure 1 and Figure 5As shown, the pressure differential water-fertilizer control system 1 includes a first adapter 700, which is disposed between the liquid inlet pipe 200 and the first liquid inlet 111. The fertilizer inlet pipe 420 is connected to one end of the liquid inlet pipe 200 through one of the first branch communication ports 720 of the first adapter 700. Thus, by disposing the first adapter 700, the fertilizer inlet pipe 420 of the fertilizer storage assembly 400 can be quickly connected to the liquid inlet pipe 200. When multiple fertilizer storage assemblies 400 need to be connected, the corresponding number of first adapters 700 can be added to connect the fertilizer inlet pipes 420 of the corresponding number of fertilizer storage assemblies 400 to the liquid inlet pipe 200.

[0062] It is understandable that if Figure 6 and Figure 7 As shown, the first adapter 700 in this example may specifically include a first tube body connection portion 710 and at least one first branch communication port 720. The interfaces at both ends of the first tube body connection portion 710 are connected to the liquid inlet pipe 200 and the first liquid inlet 111 respectively. The first branch communication port 720 is provided on the peripheral tube wall of the first tube body connection portion 720. In this way, the first adapter 700 can be connected between the liquid inlet pipe 200 and the first liquid inlet 111, while the fertilizer inlet pipe 420 is connected to one end of the liquid inlet pipe 200 through one of the first branch communication ports 720 of the first adapter 700. In addition, this first adapter 700 can be as follows Figure 7 The multiple ones shown are nested to increase the number of fertilizer inlet pipelines 420 at the end of the liquid inlet pipeline 200.

[0063] In some examples, such as Figure 1 and Figure 5 As shown, the pressure differential water-fertilizer control system 1 includes a second adapter 800, which is disposed between the liquid outlet pipe 300 and the first liquid outlet 112. The first fertilizer outlet pipe 430 is connected to one end of the liquid outlet pipe 300 through one of the second branch connection ports 820 of the second adapter 800. Thus, by disposing the second adapter 800, the fertilizer outlet pipe of the fertilizer storage assembly 400 can be quickly connected to the liquid outlet pipe 300. When multiple fertilizer storage assemblies 400 need to be connected, the fertilizer outlet pipes of the corresponding number of fertilizer storage assemblies 400 can be connected to the liquid outlet pipe 300 by adding a corresponding number of second adapters.

[0064] It is understandable that if Figure 8 and Figure 9As shown, the second adapter 800 in this example may specifically include a second tube connection portion 810 and at least one second branch connection port 820. The two ends of the second tube connection portion 810 connect to the liquid outlet pipe 300 and the first liquid outlet 112, respectively. The second branch connection port 820 is disposed on the peripheral wall of the second tube connection portion 820. This allows the second adapter 800 to be connected between the liquid outlet pipe 300 and the first liquid outlet 112, while the first fertilizer outlet pipe 430 is connected to one end of the liquid outlet pipe 300 through one of the second branch connection ports 820 of the second adapter 800. Furthermore, multiple second adapters 800 may be nested to increase the number of fertilizer outlet pipes at the end of the liquid outlet pipe 300. Alternatively, a tee connector 830 may be directly connected to each second branch connection port 820 to increase the number of fertilizer outlet pipes at the end of the liquid outlet pipe 300. In addition, the composite sensor 440 in the above example can also be specifically installed on the second adapter 800, and can further be installed near the second branch connection port 820, and the first detection probe 4441 and the second detection probe 442 are both exposed to the second branch connection port 820, so as to better realize the fertilizer liquid concentration monitoring of the corresponding fertilizer outlet pipeline.

[0065] In some examples, such as Figure 2 As shown, the second liquid inlet is disposed near the bottom of the fertilizer storage container 410, and the second liquid outlet is disposed near the top of the fertilizer storage container 410. This ensures that the liquid entering through the second liquid inlet fully dissolves the fertilizer in the fertilizer storage container 410 to form a fertilizer solution, which is then discharged through the second liquid outlet into the liquid outlet pipe 300. Furthermore, to facilitate the addition of fertilizer to the fertilizer storage container 410, a fertilizer addition port with a removable cover 411 is provided at the top of the fertilizer storage container 410.

[0066] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the utility model concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A pressure differential water and fertilizer control system, characterized in that: It includes electric proportional valve, liquid inlet pipe, liquid outlet pipe and fertilizer storage component, among which, The electric proportional valve is provided with a first liquid inlet and a first liquid outlet; The liquid inlet pipe is connected to the first liquid inlet; The liquid outlet pipe is connected to the first liquid outlet and is used to output the liquid required for irrigation or fertilization; The fertilizer storage assembly includes a fertilizer storage container and a fertilizer inlet pipeline with a first electric valve, the fertilizer storage container is further provided with a second liquid inlet and a second liquid outlet, the second liquid inlet is connected to the liquid inlet pipeline through the fertilizer inlet pipeline, and the second liquid outlet is connected to the liquid outlet pipeline; The first electric valve is used to control the connection and closing of the fertilizer inlet pipeline; the electric proportional valve is used to adjust the opening and closing ratio to form a pressure difference between the liquid in the first liquid inlet and the first liquid outlet, so that the liquid flows from the liquid inlet pipe to the fertilizer inlet pipeline and enters the fertilizer storage container.

2. The pressure differential water and fertilizer control system according to claim 1, characterized in that: It also includes a pressure detection component, which is arranged adjacent to the first liquid outlet and is used to detect the liquid pressure at the first liquid outlet.

3. The pressure differential water and fertilizer control system according to claim 2, characterized in that: It also includes a first control mechanism, which is electrically connected to the pressure detection component, the electric proportional valve and the first electric valve, respectively, and is used to adjust the opening and closing ratio of the electric proportional valve and control the connection and closing of the first electric valve according to the liquid pressure detected by the pressure detection component.

4. The pressure differential water and fertilizer control system according to claim 3, characterized in that: The electric proportional valve includes a valve body and a valve core. The valve body is connected to the first control mechanism. The valve core is arranged inside the valve body. The valve core includes a first connecting member. The first control mechanism includes a driving assembly. The driving assembly includes a second connecting member. The first connecting member and the second connecting member are connected. The driving assembly drives the second connecting member to rotate, thereby driving the valve core to rotate relative to the valve body to adjust the opening and closing ratio of the electric proportional valve.

5. The pressure differential water and fertilizer control system according to claim 1, characterized in that: The fertilizer storage assembly further includes a first fertilizer outlet pipeline with a one-way valve, and the second liquid outlet is connected to the liquid outlet pipe through the first fertilizer outlet pipeline.

6. The pressure differential water and fertilizer control system according to claim 5, characterized in that: The fertilizer storage assembly further includes a conductivity sensor, a probe of which is built into the first fertilizer outlet pipeline and is used to detect the conductivity of the liquid in the first fertilizer outlet pipeline.

7. The pressure differential water and fertilizer control system according to claim 5, characterized in that: The fertilizer storage assembly further includes a pH sensor, a probe of which is built into the first fertilizer outlet pipeline and is used to detect the pH of the liquid in the first fertilizer outlet pipeline.

8. The pressure differential water and fertilizer control system according to claim 5, characterized in that: The fertilizer storage assembly further includes a composite sensor, which includes a first detection probe and a second detection probe, wherein: The first detection probe is built into the first fertilizer outlet pipeline and is used to detect the conductivity of the liquid in the first fertilizer outlet pipeline; The second detection probe is built into the first fertilizer outlet pipeline and is used to detect the pH value of the liquid in the first fertilizer outlet pipeline.

9. The pressure differential water and fertilizer control system according to claim 3, characterized in that: The fertilizer storage component also includes a second fertilizer outlet pipeline with a second electric valve, the second liquid outlet is connected to the liquid outlet pipe through the second fertilizer outlet pipeline, the second electric valve is also electrically connected to the first control mechanism, and the first control mechanism is further used to control the connection and closing of the second electric valve according to the liquid pressure detected by the pressure detection component.

10. The pressure differential water and fertilizer control system according to claim 8, characterized in that: The pressure differential water-fertilizer control system comprises two or more fertilizer storage components, and further comprises a second control mechanism, wherein the second control mechanism is electrically connected to each of the first electric valves and each of the composite sensors, respectively, and the second control mechanism is further used to control the connection and closing of each of the first electric valves according to the conductivity detection results and the pH detection results of each of the composite sensors.

11. The pressure differential water and fertilizer control system according to claim 1, characterized in that: It includes a first adapter, which is connected between the liquid inlet pipe and the first liquid inlet, and the fertilizer inlet pipeline is connected to one end of the liquid inlet pipe through one of the first branch connecting ports of the first adapter.

12. The pressure differential water and fertilizer control system according to claim 5, characterized in that: It includes a second adapter, which is connected between the liquid outlet pipe and the first liquid outlet. The first fertilizer outlet pipeline is connected to one end of the liquid outlet pipe through one of the second branch communication ports of the second adapter.

13. The pressure differential water and fertilizer control system according to any one of claims 1 to 12, characterized in that: The second liquid inlet is arranged adjacent to the bottom of the fertilizer storage container, and the second liquid outlet is arranged adjacent to the top of the fertilizer storage container.

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