Intelligent water and fertilizer drip irrigation device for gardens

Abstract

The utility model discloses a kind of intelligent water and fertilizer drip irrigation devices for gardens, it is related to the field of landscaping engineering, and its technical scheme main point is, including dripper, the dripper is equipped with the shell with cavity, water inlet and water outlet, water outlet front end is connected with the elastic membrane filter element shell inner wall made of elastic material is provided with check valve, reflux passage, reflux passage one end is communicated with water inlet side, other end is communicated with water outlet side, for when guiding reflux water to return between filter element and water outlet area when water outlet is blocked or pressure is abnormal, to realize pressure release and self-cleaning. The device structure is reasonable, filtration is fine, and the performance of preventing blockage is strong, with good irrigation stability and reliability, applicable to garden precision irrigation scene.

Description

Technical Field

[0001] This utility model relates to the field of landscaping engineering, and in particular to an intelligent water and fertilizer drip irrigation device for landscaping. Background Technology

[0002] Integrated water and fertilizer drip irrigation systems are widely used in landscaping, agriculture, and other fields, enabling precise irrigation and fertilization, and significantly improving water and fertilizer utilization. However, in actual operation, dripper clogging remains a major bottleneck for system reliability and maintenance costs. Fertilizer solutions often contain particulate impurities, suspended solids, or scale, which are prone to clogging. After prolonged operation, these substances accumulate at the dripper nozzles, leading to reduced flow or even complete blockage, resulting in uneven irrigation, poor plant growth, and increased labor maintenance costs. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent drip irrigation device for gardens, which has the advantages of enabling unidirectional control and fine filtration of irrigation water flow, preventing blockage and backflow, and ensuring the long-term stable operation of the drip irrigation system.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A smart drip irrigation device for gardens includes drippers, wherein the drippers... The head includes: a shell, having a cavity, an inlet, and an outlet; The elastic membrane filter element, which is located at the front end of the water outlet, is fixedly connected to the housing. The elastic membrane filter element is made of elastic material and has a multi-microporous structure. The one-way valve is installed on the inner wall of the housing and is located on the water flow path between the inlet and the outlet; The return channel has one end located on the inlet side and connected to the cavity, and the other end located on the outlet side and connected to the cavity. The return channel is connected to the one-way valve and is used to guide the return water to the area between the elastic membrane filter element and the outlet.

[0005] Further configuration: The micropore diameter of the elastic membrane filter element is 100–150 μm.

[0006] Further configuration: The one-way valve is a diaphragm structure with an elastic diaphragm.

[0007] Further feature: The inner wall of the reflux channel is provided with a smooth coating.

[0008] Further configuration: The cross-sectional area of ​​the reflux channel gradually decreases from the inlet end to the outlet end.

[0009] Further configuration: includes a main pipe, which is sequentially connected to a water collection tank, a pumping station, a fertilizer main valve, a mesh filter, a control valve, and a check valve; the fertilizer tank is connected in series upstream and downstream of the fertilizer main valve; the end of the main pipe is connected to multiple branch pipes, and the drippers are respectively connected to different branch pipes.

[0010] Further features include a fully automatic backwash filter device located between the pump station and the main fertilizer valve.

[0011] Further configuration: The fertilizer tank outlet is equipped with a proportional distributor, which includes a dual-chamber structure with a water chamber and a fertilizer liquid chamber, and the two chambers are interconnected through multiple microchannels.

[0012] Further feature: The outlet of the proportional distributor is provided with a spiral flow channel.

[0013] Further configuration: The area between the elastic membrane filter element and the water outlet is conical.

[0014] In summary, this utility model has the following beneficial effects: First, in this invention, the elastic membrane filter element is made of elastic material and has multiple microporous structures. When water flows through it, it is impacted by the water flow and generates micro-vibrations, thus creating a disturbance effect on the surface of the elastic membrane filter element, effectively shaking off attached impurity particles. Compared with traditional static filter elements, this structure can achieve dynamic self-cleaning without relying on external power or cleaning devices, significantly reducing the risk of clogging and improving the lifespan and ease of maintenance of the dripper.

[0015] Secondly, in this invention, by setting a return channel that works in conjunction with a one-way valve, some fluid can flow back to the area between the filter element and the outlet, forming a turbulent water flow and achieving a backwashing function for impurities. This turbulent flow locally enhances the micro-surge flow at the outlet end, and combined with the disturbance effect generated by the vibrating filter element, it effectively prevents uneven water pressure or clogging of the microporous filter element, improving the uniformity and consistency of the output water.

[0016] Third, this invention utilizes a separate structure for the water chamber and the fertilizer solution chamber, with multiple microchannels between the two chambers, enabling continuous mixing of the fertilizer solution and irrigation water in a limited manner. The multiple microchannels provide distributed fluid channels, allowing for flow rate adjustment based on the size and number of microchannels, thereby achieving fertilizer solution injection at different concentration ratios. This proportional adjustment method, based on physical structure rather than electronically controlled valves, is characterized by low cost and high reliability, enabling continuous operation without external energy consumption.

[0017] Fourth, in this invention, multiple microchannels not only serve to distribute the flow rate, but also create eddies and disturbances before the fluid enters the main channel, allowing water and fertilizer solution to mix fully inside the distributor, avoiding the phenomenon of "water first, fertilizer later" or "concentration fluctuations", thereby improving the uniformity of nutrient supply to crops by the drip irrigation system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dropper's structure; Figure 2 This is a schematic diagram of the structure of an intelligent water and fertilizer drip irrigation device for gardens; Figure 3 This is a schematic diagram of the layout of the main pipes and branch pipes; Figure 4 This is a schematic diagram of the proportional distributor.

[0019] In the diagram, 100 is the dripper; 101 is the housing; 102 is the cavity; 103 is the inlet; 104 is the outlet; 105 is the elastic membrane filter element; 106 is the microporous structure; 107 is the one-way valve; and 108 is the reflux channel. 200. Main pipe; 210. Branch pipe; 300. Collection tank; 400. Pump station; 500. Fertilizer main valve; 600. Mesh filter; 700. Control valve; 800. Check valve; 900. Fertilizer tank; 901. Proportional distributor; 902. Water chamber; 903. Fertilizer solution chamber; 904. Microchannel; 905. Spiral flow channel; 910. Fully automatic backwash filter. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 are not intended to 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.

[0022] A smart drip irrigation device for gardens, such as Figure 1As shown, the device includes a dripper 100, which comprises a housing 101. The housing 101 has an internal cavity 102 for containing liquid. The housing 101 has an inlet 103 and an outlet 104 at its two ends for introducing and removing water. An elastic membrane filter element 105 is fixedly mounted at the front end of the outlet 104, and the elastic membrane filter element 105 is fixedly connected to the housing 101.

[0023] A one-way valve 107 is installed on the inner wall of the housing 101. Located in the water flow path between the inlet 103 and the outlet 104, the one-way valve 107 restricts the fluid flow direction, allowing water to flow unidirectionally from the inlet 103 to the outlet 104, thus preventing backflow contamination. To further enhance the device's self-cleaning capability, the dripper 100 is also equipped with a return channel 108. One end of the return channel 108 is located near the inlet 103 and communicates with the cavity 102, while the other end is located near the outlet 104 and also communicates with the cavity 102. This return channel 108 connects to the one-way valve 107, forming a bypass structure. When the outlet 104 is blocked or pressure fluctuates, it guides the return water in the cavity 102 to the area between the elastic membrane filter element 105 and the outlet 104, achieving a backwashing function for impurities. This helps extend the filter element's service life and improves the anti-clogging performance of the dripper 100.

[0024] Furthermore, the area between the elastic membrane filter element 105 and the outlet 104 is conical. This is used to enhance the uniformity of fertilizer solution mixing.

[0025] Furthermore, the elastic membrane filter element 105 is integrally molded from elastic material, and its surface is uniformly distributed with multiple microporous structures 106. The pore size range of the micropores is preferably 100–150 μm. When water flows through, it can be impacted by the water flow and generate micro-vibrations, thereby forming a disturbance effect on the surface of the elastic membrane filter element 105, effectively shaking off the attached impurity particles.

[0026] The one-way valve 107 preferably adopts a diaphragm structure. Specifically, it has a flexible elastic diaphragm inside, which can open and close according to changes in water pressure, and automatically close when there is no external water pressure. The one-way valve 107 has a preset opening pressure threshold. When the outlet 104 is blocked, causing the internal pressure of the cavity 102 to increase to exceed the preset value, the one-way valve 107 will automatically open.

[0027] To further reduce frictional losses in the return channel 108, the inner wall of the return channel 108 is provided with a smooth coating. The coating can be made of a polymer anti-stick material, which makes the liquid flow more smoothly in the channel and reduces the possibility of impurities adhering, thereby improving the self-cleaning ability of the system.

[0028] Furthermore, the reflux channel 108 is designed to gradually narrow from the end near the inlet 103 to the end near the outlet 104, with its cross-sectional area gradually decreasing along the water flow direction. This structural arrangement creates a pressure differential guiding effect during the reflux process, thereby enhancing the speed and force of liquid flushing the filter element, improving the self-cleaning efficiency of the filter element, and further extending the service life of the dripper 100.

[0029] Based on the above embodiments, as a further defined structure, such as Figure 2 As shown, the intelligent drip irrigation device for gardens also includes a main pipe 200 for centralized water delivery and distribution. One end of the main pipe 200 is connected to a collection tank 300 for collecting and storing the water required for irrigation. The outlet of the collection tank 300 is sequentially connected to a pump station 400, a fertilizer main valve 500, a mesh filter 600, a control valve 700, and a check valve 800, forming a continuous water flow path.

[0030] The pump station 400 is used to pressurize the water source to ensure that there is sufficient pressure in the system to drive the transmission of the water-fertilizer mixture; the fertilizer main valve 500 is used to control the opening and closing of the fertilizer tank 900; the mesh filter 600 is located downstream of the fertilizer main valve 500 to further filter out residual impurities in the water flow; the control valve 700 and the check valve 800 are located downstream of the filter to respectively realize the control of water flow interruption and prevent liquid backflow.

[0031] The fertilizer tank 900 is connected in series between the upstream and downstream of the fertilizer main valve 500. With this arrangement, fertilizer solution can be introduced as water flows through the fertilizer main valve 500, achieving automatic mixing and facilitating flexible adjustment of the fertilizer ratio according to crop needs.

[0032] like Figure 3 As shown, the end of the main pipe 200 is connected to multiple branch pipes 210 in a downstream direction, extending to various locations in the irrigation area. Each branch pipe 210 is equipped with several drippers 100 at its end, used to precisely deliver the mixed water and fertilizer solution to the plant roots. Through the distributed layout of the main pipe 200 and the branch pipes 210, simultaneous irrigation of multiple points in the garden area is achieved.

[0033] Based on the above implementation method, as a further optimized structure, such as Figure 2 As shown, the intelligent drip irrigation system for gardens also includes a fully automatic backwash filter 910. This fully automatic backwash filter 910 is located between the pump station 400 and the main fertilizer valve 500. The fully automatic backwash filter 910 has a backwashing function, which can automatically identify the degree of filter element contamination during operation and automatically initiate the backwashing program under set pressure or time conditions to achieve self-cleaning of the filter element, ensuring continuous and stable system operation, reducing the frequency of manual maintenance, and improving the intelligence and reliability of the overall irrigation system.

[0034] Based on the above embodiments, as a further limiting embodiment, such as... Figure 2 and Figure 4 As shown, in the intelligent drip irrigation device for gardens, a proportioner 901 is provided at the outlet of the fertilizer tank 900 to achieve a fixed ratio of fertilizer solution to irrigation water. The proportioner 901 adopts a dual-chamber structure, with a water chamber 902 and a fertilizer solution chamber 903 respectively. The two chambers 102 are interconnected internally through multiple evenly distributed microchannels 904, thereby realizing rapid mixing and dynamic allocation of irrigation water and fertilizer solution within the chambers 102.

[0035] Furthermore, the outlet 104 of the proportional distributor 901 is equipped with a spiral flow channel 905. This flow channel extends spirally along the water outlet direction, which helps to enhance the disturbance and turbulence effect of the mixed liquid, improve the uniformity of water and fertilizer mixing, and avoid the situation where crop absorption efficiency decreases due to local concentration differences. At the same time, this structure also helps to stabilize the water flow rate, improve the precision and controllability of fertilization, and enhance the intelligent irrigation capability of the device.

[0036] The above embodiments are merely explanations of the present utility model and are not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to the embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

Claims

1. A smart drip irrigation device for gardens, comprising drippers (100), characterized in that, The dripper (100) includes: The shell (101) has a cavity (102), an inlet (103) and an outlet (104); An elastic membrane filter element (105) is disposed at the front end of the outlet (104) and is fixedly connected to the housing (101). The elastic membrane filter element (105) is made of elastic material and has multiple microporous structures (106). A one-way valve (107) is installed on the inner wall of the housing (101) and is located on the water flow path between the inlet (103) and the outlet (104); The return channel (108) has one end located on the side of the inlet (103) and connected to the cavity (102), and the other end located on the side of the outlet (104) and connected to the cavity (102). The return channel (108) is connected to the one-way valve (107) and is used to guide the return water to the area between the elastic membrane filter element (105) and the outlet (104).

2. The intelligent water and fertilizer drip irrigation device for gardens according to claim 1, characterized in that: The micropore diameter of the elastic membrane filter element (105) is 100–150 μm.

3. The intelligent water and fertilizer drip irrigation device for gardens according to claim 1, characterized in that: The one-way valve (107) is a diaphragm structure with an elastic diaphragm.

4. The intelligent water and fertilizer drip irrigation device for gardens according to claim 1, characterized in that: The inner wall of the reflux channel (108) is provided with a smooth coating.

5. The intelligent water and fertilizer drip irrigation device for gardens according to claim 1, characterized in that: The cross-sectional area of ​​the return channel (108) gradually decreases from the inlet (103) end to the outlet (104) end.

6. A smart drip irrigation device for gardens according to any one of claims 1-5, characterized in that: The system includes a main pipe (200), which is sequentially connected to a water collection tank (300), a pump station (400), a fertilizer main valve (500), a mesh filter (600), a control valve (700), and a check valve (800). A fertilizer tank (900) is connected in series upstream and downstream of the fertilizer main valve (500). Multiple branch pipes (210) are connected to the end of the main pipe (200), and the drippers (100) are connected to different branch pipes (210) respectively.

7. A smart drip irrigation device for gardens according to claim 6, characterized in that: It also includes a fully automatic backwash filter device (910), which is located between the pump station (400) and the fertilizer main valve (500).

8. A smart drip irrigation device for gardens according to claim 6, characterized in that: The fertilizer tank (900) has a proportional distributor (901) at its outlet. The proportional distributor (901) includes a dual-cavity structure with a water cavity (902) and a fertilizer liquid cavity (903). The two cavities (102) are interconnected through multiple microchannels (904).

9. A smart drip irrigation device for gardens according to claim 8, characterized in that: The outlet (104) of the proportional distributor (901) is provided with a spiral flow channel (905).

10. A smart drip irrigation device for gardens according to claim 1, characterized in that: The area between the elastic membrane filter element (105) and the outlet (104) is conical.

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