Water-saving irrigation device

Abstract

The utility model belongs to the technical field of agricultural equipment, and particularly relates to a water-saving irrigation device which comprises a land drainage channel, a pump station and a water storage tank, the water storage tank is buried at the bottom of the land drainage channel, and rainwater is collected and purified through a multi-filtering structure of a water tank filtering cover, filtering cloth and filtering cotton; a water tank water inlet hole is formed in the upper surface of the water storage tank to ensure that rainwater can smoothly enter the water storage space, a water supply pipe is communicated with the water storage tank and conveys water to an irrigation pipe network through a pump station, and a water well pumping pipe is arranged on a three-way pipe, so that a water source can be supplemented through an underground water well when the rainwater storage amount is insufficient, and the continuity of the irrigation water source is ensured; a water return pipe is arranged between the pump water outlet pipe and the water supply pipe, so that residual water in the pipeline can flow back to the water storage tank after irrigation is finished, water resource waste is avoided, and the risk of pipeline blockage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural equipment technology, and specifically relates to a water-saving irrigation device. Background Technology

[0002] Water-saving irrigation technology is a crucial research area in agriculture, aiming to improve water resource utilization efficiency, reduce agricultural water waste, and ensure crop growth needs are met. Traditional irrigation methods primarily rely on groundwater or surface water, transported to farmland manually or through pipelines. However, this method presents numerous problems in water resource management, such as excessive water consumption, low utilization rates, and declining groundwater levels. Furthermore, in some areas, the lack of effective rainwater harvesting and utilization methods leads to underutilization of rainwater resources, further exacerbating water shortages. Therefore, effectively utilizing rainwater resources and optimizing irrigation water management have become key focuses of agricultural water-saving technology research.

[0003] Existing water-saving irrigation systems still have the following problems in practical applications:

[0004] 1. Single water source utilization and underutilization of rainwater resources: At present, most irrigation systems still rely mainly on groundwater or surface water, while the collection and reuse of rainwater is relatively limited, resulting in the loss of rainwater and failing to fully realize its potential irrigation value.

[0005] 2. Waste of irrigation water: After irrigation, traditional irrigation systems often leave a significant amount of water inside the pipe network. Prolonged accumulation of this water can lead to microbial growth, clogging pipes and sprinklers, affecting irrigation efficiency, and increasing maintenance costs. Furthermore, this residual water is often ineffectively discharged, resulting in water waste.

[0006] 3. Insufficient filtration system and low rainwater utilization efficiency: Although some irrigation systems have rainwater collection functions, the filtration methods are relatively simple, which can easily lead to silt and impurities entering the water storage device, thereby affecting water quality and even causing pipe blockage and reducing irrigation efficiency. Utility Model Content

[0007] In view of the problems existing in the prior art, the purpose of this utility model is to provide a water-saving irrigation device that can effectively collect and utilize rainwater, avoid irrigation water waste, and improve water filtration effect, so as to improve the water resource utilization rate in agricultural production.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A water-saving irrigation device includes a land drainage ditch, a pumping station, and a water storage tank. The water storage tank is buried at the bottom of the land drainage ditch. A water tank filter cover is installed on the top of the water storage tank. The upper surface of the water tank filter cover is covered with filter cloth, and filter cotton is filled in the gap between the water tank filter cover and the water storage tank. Both the filter cotton and the filter cloth are used to filter rainwater. The water storage tank is used to collect rainwater for irrigating the land.

[0010] Furthermore, the upper surface of the water tank filter cover is uniformly provided with filter holes, and the upper surface of the water storage tank is provided with a water tank inlet hole. The filter holes and the water tank inlet hole are used to fill the water storage tank with water.

[0011] Furthermore, a water supply pipe is installed on one side of the water storage tank, and the water supply pipe is connected to the inside of the water storage tank. A pump inlet pipe is provided on one side of the pump station, and a pump outlet pipe is provided on the other side of the pump station.

[0012] Furthermore, a tee pipe is inserted between the water supply pipe and the pump inlet pipe, and a well pumping pipe is inserted into one side of the tee pipe. The well pumping pipe is used for backup water intake, and a valve is installed at one end of both the water supply pipe and the well pumping pipe.

[0013] Furthermore, a return water pipe is provided between the pump outlet pipe and the water supply pipe, and the pump outlet pipe and the water supply pipe are connected through the return water pipe. The return water pipe is used to recover residual water in the irrigation network, and a valve is provided at the top of the return water pipe.

[0014] Furthermore, the upper surface of the water storage tank is provided with a maintenance manhole, which protrudes from the bottom surface of the land drainage ditch, and the top of the maintenance manhole is provided with a cover plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model provides a water-saving irrigation device that improves water resource utilization and reduces dependence on groundwater by collecting, filtering and recycling rainwater. It also reduces the maintenance cost of the irrigation system and solves problems such as single water source, waste of irrigation water and insufficient water filtration in existing irrigation technologies.

[0017] This invention utilizes a water storage tank installed inside a land drainage ditch. By leveraging the ditch's drainage system, rainwater is filtered through multiple layers of filter cloth, filter cotton, and filter holes before entering the tank. This effectively prevents sediment and impurities from entering the irrigation system, improving water cleanliness. Compared to traditional irrigation methods that rely solely on groundwater, this device fully utilizes natural rainfall resources, reduces groundwater extraction, minimizes water waste, and enhances the sustainability of agricultural production.

[0018] This invention features a water supply pipe installed on one side of the water storage tank, which then pumps water to the irrigation network, ensuring a stable irrigation water source. When rainwater storage is insufficient, water can be drawn from groundwater wells via a well pumping pipe installed on a T-junction, ensuring the irrigation system can continue to operate normally during the dry season. This device combines rainwater and groundwater sources, guaranteeing the continuity and flexibility of agricultural water use and preventing irrigation interruptions due to water shortages.

[0019] This invention uses a return water pipe to connect the supply water pipe and the pump outlet pipe, allowing residual water in the pipe network to flow back to the storage tank under gravity after irrigation. This prevents water from accumulating inside the pipes for extended periods, reducing the growth of microorganisms and scale formation, lowering the risk of sprinkler blockage, and improving the long-term stability of the irrigation system. Furthermore, the recovered water can be reused for the next irrigation, further reducing water waste and improving water conservation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the water storage tank of this utility model;

[0022] Figure 3 This is a three-dimensional exploded view of the water storage tank after the water supply pipe of this utility model has been removed.

[0023] Figure 4 This is a three-dimensional structural diagram of the water tank filter cover of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 101. Land drainage ditch; 102. Pumping station; 121. Pump inlet pipe; 122. Pump outlet pipe; 103. Water storage tank; 131. Inspection manhole; 132. Water tank filter cover; 133. Filter cloth; 134. Filter cotton; 135. Water tank inlet hole; 136. Filter hole; 104. Water supply pipe; 105. Return water pipe; 106. Well pumping pipe; 107. T-joint pipe. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. Example

[0027] like Figures 1-3As shown, a water-saving irrigation device includes a land drainage ditch 101, a pumping station 102, and a water storage tank 103. The water storage tank 103 is buried at the bottom of the land drainage ditch 101. The land drainage ditch 101 is a concrete structure with a width of 500mm and a depth of 400mm, which can effectively collect rainwater and provide a stable water flow channel. The water storage tank 103 is made of high-density polyethylene (HDPE), which has strong corrosion resistance and pressure resistance, ensuring that it is not affected by corrosion when buried in the soil for a long time. A water tank filter cover 132 is installed on the top of the water storage tank 103. The water tank filter cover 132 is made of 304 stainless steel, which has strong pressure resistance and can effectively prevent soil or external pressure from affecting the internal structure. The structure has several advantages: the upper surface of the water tank filter cover 132 is covered with filter cloth 133, which is made of 120-mesh nylon filter screen, effectively blocking large particles and sediment from entering the water storage tank 103; at the same time, the gap between the water tank filter cover 132 and the water storage tank 103 is filled with filter cotton 134 with a thickness of 30mm, which is made of polypropylene fiber, and can further filter suspended particles in the water, improving water quality; both filter cotton 134 and filter cloth 133 are used to filter rainwater, so that the rainwater enters the water storage tank 103 after multiple purifications, ensuring the quality of irrigation water; the water storage tank 103 is used to collect rainwater for irrigation, effectively reducing the use of groundwater resources and improving water resource utilization.

[0028] like Figure 3 and Figure 4 As shown, the upper surface of the water tank filter cover 132 is uniformly provided with filter holes 136 with a diameter of 5mm. The distribution density of the filter holes 136 is 200 per square meter to ensure that rainwater can quickly penetrate into the water storage tank 103 and improve the rainwater collection efficiency. The upper surface of the water storage tank 103 is provided with a water tank inlet hole 135 with a diameter of 50mm. The water tank inlet hole 135 is located in the central area of ​​the water storage tank 103, which can uniformly introduce rainwater and reduce water quality sedimentation caused by local water flow impact. The filter holes 136 and the water tank inlet hole 135 are used to fill the water storage tank 103 with water, and together with the filter cloth 133 and filter cotton 134, they form a multi-layer filtration system to prevent mud, sand and impurities from entering the water storage tank 103 and ensure the cleanliness of the water source.

[0029] like Figure 2As shown, a water supply pipe 104 with an outer diameter of 40mm is inserted and installed on one side of the water storage tank 103. The water supply pipe 104 is made of polyvinyl chloride (PVC), which is highly corrosion-resistant and can adapt to long-term buried environments. The water supply pipe 104 is connected to the inside of the water storage tank 103 and is connected by a sealing gasket and threaded connection to ensure excellent sealing performance at the connection and prevent leakage. A pump inlet pipe 121 with a diameter of 50mm is set on one side of the pump station 102. The pump inlet pipe 121 is made of high-pressure resistant rubber hose to ensure stable operation under high flow and water pressure conditions. A pump outlet pipe 122 with a diameter of 50mm is set on the other side of the pump station 102. The pump outlet pipe 122 is made of galvanized steel pipe and can withstand large water flow pressure to ensure the stability and reliability of water delivery during irrigation.

[0030] like Figure 2 As shown, a 50mm diameter tee pipe 107 is inserted between the water supply pipe 104 and the pump inlet pipe 121. The tee pipe 107 is made of brass, which is highly corrosion-resistant and ensures that it will not easily clog or be damaged during long-term use. A well pumping pipe 106 is inserted into one side of the tee pipe 107. The well pumping pipe 106 is made of stainless steel flexible hose, which has good pressure resistance and corrosion resistance. It is used to draw groundwater for irrigation through the pump station 102 when the water tank 103 is insufficient due to rainwater shortage. Both the water supply pipe 104 and the well pumping pipe 106 are equipped with a manual control valve at one end. The manual control valve adopts a ball valve structure, which can accurately adjust the water flow and ensure that the water flow can be quickly controlled when switching between different water sources, thus avoiding water waste.

[0031] like Figure 2 As shown, a return water pipe 105 with a diameter of 40mm is installed between the pump outlet pipe 122 and the water supply pipe 104. The return water pipe 105 is made of PVC-U material, which has high pressure resistance and corrosion resistance, ensuring that the pipe will not be blocked or aged due to water quality issues during long-term use. The pump outlet pipe 122 and the water supply pipe 104 are connected by the return water pipe 105. The return water pipe 105 is used to recover residual water in the irrigation network, avoiding water waste and reducing the problem of microbial growth caused by long-term water storage inside the pipe. A manual control valve is installed at the top of the return water pipe 105. The manual control valve is made of stainless steel, ensuring that the seal will not fail due to corrosion during long-term use, further improving the reliability and durability of the irrigation system.

[0032] like Figure 1As shown, the upper surface of the water storage tank 103 is also equipped with a 600mm diameter manhole 131. The manhole 131 is made of carbon steel, which can ensure that it will not deform under soil pressure for a long time. The manhole 131 is exposed above the bottom of the land drainage ditch 101, which is convenient for maintenance personnel to enter the water storage tank 103 for inspection and cleaning. The top of the manhole 131 is equipped with a removable cover plate. The cover plate has a non-slip design and a sealing rubber pad to ensure that the cover plate fits tightly with the manhole 131, preventing external impurities from entering the water storage tank 103 and affecting the water quality. The cover plate is fixed with stainless steel bolts and is equipped with a special wrench opening device to ensure that only professional personnel can open it, avoiding safety hazards caused by non-professionals' misoperation.

[0033] Example 2: Rainwater Harvesting and Purification System Based on Multi-Layer Filtration Structure

[0034] This embodiment addresses the problem of poor filtration efficiency in existing rainwater harvesting systems by providing a rainwater harvesting and purification system based on a multi-layer filtration structure. The rainwater harvesting system of this embodiment includes a land drainage ditch 101, a water storage tank 103, a water tank filter cover 132, a filter cloth 133, and filter cotton 134, forming a multi-layer filtration structure to ensure that rainwater is fully purified before entering the water storage tank 103.

[0035] Specifically, the land drainage ditch 101 is a 500mm wide and 400mm deep concrete structure, which can effectively collect rainwater and provide a stable water flow channel; the water tank filter cover 132 is made of 304 stainless steel and has evenly distributed 5mm diameter filter holes 136, about 200 per square meter, to ensure smooth water flow into the water storage tank 103; the filter cloth 133 is made of 120-mesh nylon filter screen, which can effectively intercept silt and impurities with a diameter greater than 0.1mm; the filter cotton 134 is made of 30mm thick polypropylene fiber material, which can further adsorb suspended particles and some organic matter in the water, improving water quality cleanliness; the water tank inlet hole 135 has a diameter of 50mm and is distributed in the central area of ​​the water storage tank 103 to ensure uniform water flow and reduce clogging problems caused by water sedimentation.

[0036] Comparative Case Study: Limitations of Traditional Single-Layer Filtration Systems

[0037] Traditional rainwater harvesting systems typically rely on a single-layer metal filter for initial filtration. The filter's large pore size allows significant amounts of sediment and impurities to directly enter the storage tank, easily causing pipe blockages and even affecting the normal operation of subsequent irrigation equipment. For example, in some traditional systems, incomplete filtration results in filter pores exceeding 10mm, leading to a large number of suspended particles entering the tank. Over time, the accumulated impurities not only reduce the tank's capacity but also require frequent cleaning, increasing maintenance costs. In contrast, the multi-layer filtration structure of this embodiment more effectively removes impurities, improves water quality, reduces maintenance workload, and ensures the long-term stable operation of the irrigation system.

[0038] Example 3: Dual-source irrigation system combining groundwater replenishment

[0039] This embodiment addresses the problem of a single water source in irrigation systems when rainfall is insufficient by proposing a dual-source irrigation system that combines groundwater replenishment. In this embodiment, a T-junction 107 is installed between the water supply pipe 104 of the water storage tank 103 and the pump inlet pipe 121. A well pumping pipe 106 is connected to one side of the T-junction 107. The well pumping pipe 106 is a 50mm diameter stainless steel flexible hose and is equipped with a manual control valve, facilitating switching of the water source when rainfall is insufficient and ensuring the stable operation of the irrigation system.

[0040] During normal rainy seasons, rainwater collected by the land drainage ditch 101 is filtered through multiple layers before entering the water storage tank 103 and then pumped to the irrigation network via the pumping station 102. In times of insufficient rainfall or drought, the top valve of the water supply pipe 104 can be closed, and the end valve of the well pumping pipe 106 can be opened, allowing the pumping station 102 to draw water directly from groundwater wells for irrigation. This system combines rainwater harvesting and groundwater replenishment to ensure the continuity of agricultural irrigation and avoid agricultural yield reductions caused by water shortages.

[0041] Comparative Case Study: The Drawbacks of a Single Water Source System

[0042] Traditional irrigation systems typically rely solely on groundwater or surface water, lacking rainwater harvesting and reuse capabilities. For example, in some agricultural areas, long-term groundwater extraction in single-source irrigation systems leads to a gradual decline in the water table, ultimately impacting the sustainable development of farmland. In systems dependent solely on rainwater, irrigation becomes unreliable during drought years, resulting in reduced crop yields or even total crop failure. In contrast, the dual-source irrigation system of this embodiment reduces groundwater extraction when rainfall is abundant and switches to groundwater supply promptly when rainfall is insufficient, improving the system's flexibility and reliability.

[0043] Example 4: Water-saving optimization scheme for pipeline return water recovery system

[0044] This embodiment addresses the problem of water waste remaining in the pipe network after irrigation in existing irrigation systems by providing a pipe network return water recycling system. The system includes a return water pipe 105 between the pump outlet pipe 122 and the supply pipe 104. The return water pipe 105 is made of 40mm diameter PVC-U material and has a manually controlled valve installed at its top. After irrigation, the return water pipe 105 is opened, allowing the remaining water in the pipe network to flow back to the storage tank 103 under gravity, thus achieving water resource recycling.

[0045] During irrigation, pump station 102 delivers water to the irrigation network through pump outlet pipe 122 to ensure that crops receive sufficient water. After irrigation is completed, the valve of return pipe 105 is opened, allowing the residual water in the network to flow back to the storage tank 103 under gravity. This not only saves water resources but also effectively prevents residual water from remaining in the pipe for a long time, thus preventing the growth of microorganisms or the deposition of scale. This reduces the risk of nozzle clogging and improves the service life of the network.

[0046] Comparative Case: Traditional Systems Without Return Water Function

[0047] Traditional irrigation systems typically lack a water return function. After irrigation, residual water often remains in the pipe network due to gravity, leading to deteriorated water quality and increased susceptibility to algae and bacteria growth. For example, in some agricultural irrigation systems, the long-term retention of water in the pipes causes frequent nozzle blockages, sometimes requiring manual disassembly and cleaning, increasing maintenance costs. In contrast, this embodiment achieves water resource recovery through the return pipe 105, which not only reduces irrigation water waste but also effectively lowers pipe maintenance costs and improves the stability and lifespan of the irrigation system.

[0048] Example 5: Maintenance and Sealing Structure Optimization of Manholes

[0049] This embodiment addresses the problem of difficult maintenance of existing water storage tanks by providing a maintenance manhole 131 with a sealed structure. The maintenance manhole 131 is located on the upper surface of the water storage tank 103, has a diameter of 600mm, is made of carbon steel, can withstand soil pressure for a long time without deformation, and is exposed on the bottom surface of the land drainage ditch 101, facilitating regular inspection and cleaning by maintenance personnel.

[0050] To ensure the airtightness of the maintenance manhole 131, a cover plate is installed at its top. The cover plate is made of 304 stainless steel and has anti-slip texture to increase operational safety. A silicone sealing ring with a thickness of 5mm is installed between the cover plate and the maintenance manhole 131 to ensure that it will not fail due to aging during long-term use, preventing external pollutants from entering the water storage tank 103 and improving the safety of irrigation water.

[0051] Comparative Case Study: Disadvantages of Standard Inspection Ports

[0052] In traditional systems, access ports are typically ordinary metal covers lacking effective sealing structures, allowing rainwater mixed with sediment to enter the water tank and affect water quality. Furthermore, these covers are prone to rusting due to prolonged exposure to the environment, increasing maintenance difficulty. For example, in some systems, poor sealing of the access ports allows rainwater carrying large amounts of impurities into the water tank, leading to water quality degradation and even affecting the operation of irrigation equipment. In contrast, the optimized sealing structure design of this embodiment effectively prevents external contamination, improving the system's durability and ease of maintenance.

[0053] The working principle of this utility model is as follows:

[0054] When in use, first connect one end of the well pumping pipe 106 to the well pipe. When the rainwater inside the water storage tank 103 is used up, close the valve at the top of the water supply pipe 104 and open the valve at the end of the well pumping pipe 106. Then, water can be pumped from the well for irrigation.

[0055] During the rainy season, rainwater flows into the land drainage ditch 101. After being filtered by the mud and sand at the bottom of the land drainage ditch 101, the filter cloth 133, the filter holes 136, and the filter cotton 134, the rainwater enters the water storage tank 103 through the water tank inlet 135. This achieves the filtration and collection of rainwater, which is more water-saving than the traditional reliance on groundwater wells.

[0056] After irrigation, the valve at the top of the return pipe 105 is opened, and the water remaining in the irrigation network flows back to the water storage tank 103 under the action of gravity through the return pipe 105 and the supply pipe 104. This not only saves water resources, but also avoids the phenomenon of water remaining in the irrigation network breeding bacteria and clogging the sprinklers.

[0057] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A water-saving irrigation device, comprising a land drainage ditch (101), a pumping station (102), and a water storage tank (103), characterized in that: The water storage tank (103) is buried at the bottom of the land drainage ditch (101). A water tank filter cover (132) is installed on the top of the water storage tank (103). A filter cloth (133) is laid on the upper surface of the water tank filter cover (132), and filter cotton (134) is filled in the gap between the water tank filter cover (132) and the water storage tank (103). Both the filter cotton (134) and the filter cloth (133) are used to filter rainwater. The water storage tank (103) is used to collect rainwater to irrigate the land. The upper surface of the water tank filter cover (132) is uniformly provided with filter holes (136), and the upper surface of the water storage tank (103) is provided with a water tank inlet hole (135). The filter holes (136) and the water tank inlet hole (135) are used to fill the water storage tank (103) with water.

2. The water-saving irrigation device according to claim 1, characterized in that: A water supply pipe (104) is installed on one side of the water storage tank (103), and the water supply pipe (104) is connected to the inside of the water storage tank (103). A pump inlet pipe (121) is provided on one side of the pump station (102), and a pump outlet pipe (122) is provided on the other side of the pump station (102).

3. The water-saving irrigation device according to claim 2, characterized in that: A three-way pipe (107) is inserted between the water supply pipe (104) and the pump inlet pipe (121). A well pumping pipe (106) is inserted on one side of the three-way pipe (107). The well pumping pipe (106) is used for backup water intake. A valve is provided at one end of both the water supply pipe (104) and the well pumping pipe (106).

4. A water-saving irrigation device according to claim 2, characterized in that: A return water pipe (105) is provided between the pump outlet pipe (122) and the water supply pipe (104), and the pump outlet pipe (122) and the water supply pipe (104) are connected through the return water pipe (105). The return water pipe (105) is used to recover the residual water in the irrigation network, and a valve is provided at the top of the return water pipe (105).

5. A water-saving irrigation device according to claim 1, characterized in that: The upper surface of the water storage tank (103) is also provided with a maintenance manhole (131), which is exposed above the bottom surface of the land drainage ditch (101), and the top of the maintenance manhole (131) is provided with a cover plate.

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