Field energy-saving efficient irrigation system and operation method thereof

Abstract

The invention belongs to the technical field of farmland irrigation, and particularly relates to a field energy-saving efficient irrigation system and an operation method thereof.The irrigation system comprises a water supply unit and an irrigation facility, the irrigation facility is connected with the purified water outlet end of the water supply unit through a water outlet pump, and the water supply unit comprises a water well and a reservoir; the inside of the reservoir is divided into a raw water area and a purified water area by a partition plate assembly, the raw water area is connected with the well by a water supply pump, water in the raw water area overflows into the purified water area along the top of the partition plate assembly, and the purified water area forms a purified water outlet end of the water supply unit and is connected with an irrigation facility by a water outlet pump. The reservoir is divided into the raw water area and the clean water area through the partition plate assembly, clean water enters the clean water area through overflow along the top of the partition plate assembly to be stored for standby application, and therefore a filter does not need to be additionally arranged, water pressure loss caused by filtering is avoided, it is guaranteed that water flows out of the near end and the far end of the irrigation facility evenly, and growth consistency of crops is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of farmland irrigation technology, specifically relating to an energy-saving and efficient irrigation system for large fields and its operation method. Background Technology

[0002] In arid and semi-arid regions of northern my country and some water-scarce areas, field irrigation mainly relies on wells as the primary water source, forming an irrigation system centered on wells. Well water is directly transported to irrigation facilities via pumps to achieve targeted irrigation of crops.

[0003] However, well water usually contains a lot of silt. If well water is used directly for irrigation, the silt can easily clog the outlet of the irrigation system, causing it to malfunction. This not only requires frequent disassembly and cleaning, increasing maintenance costs and labor intensity, but also affects crop growth due to irrigation interruptions. To solve the problem of silt blockage, filters are usually added to the water supply pipeline to filter the well water. However, the filtration process produces a significant water pressure loss, resulting in insufficient water pressure at distant locations. This leads to uneven irrigation, where crops near the source receive sufficient water while crops further away receive insufficient water, affecting the uniformity of crop growth. At the same time, the drop in water pressure also slows down the water flow rate, prolonging irrigation time and reducing irrigation efficiency.

[0004] To compensate for the water pressure loss caused by filtration, some existing technologies use pumps with larger heads for pressurized water supply. However, the purchase cost and operating energy consumption of high-head pumps increase significantly, which does not meet the energy-saving and high-efficiency requirements of agricultural production. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides an energy-efficient irrigation system for large fields and its operation method. The system uses a partition assembly to divide the water storage tank into a raw water zone and a clean water zone. When well water enters the raw water zone, it forms a buffer and stores water. As the water level rises in the raw water zone, the sediment in the well water, which has a higher density, will sink to the bottom of the raw water zone under the action of gravity. The clean water overflows through the top of the partition assembly and enters the clean water zone for storage and later use. This eliminates the need for an additional filter, avoids water pressure loss caused by filtration, ensures uniform water output at the near and far ends of the irrigation facility, and guarantees consistent crop growth.

[0006] The specific technical solution adopted in this invention is as follows: An energy-efficient irrigation system for large fields includes a water supply unit and irrigation facilities. The irrigation facilities are connected to the purified water outlet of the water supply unit via a water pump. The water supply unit includes a well and a reservoir. The reservoir is divided into a raw water zone and a purified water zone by a partition assembly. The raw water zone is connected to the well via the water supply pump. Water in the raw water zone overflows from the top of the partition assembly into the purified water zone. The purified water zone forms the purified water outlet of the water supply unit and is connected to the irrigation facilities via the water pump.

[0007] The bottom and perimeter of the water storage tank are covered with a protective layer, which includes a protective pad layer and a protective film layer located on top of the protective pad layer.

[0008] The area of ​​the reservoir below the ground surface is the foundation pit, which has a recessed structure. The area of ​​the reservoir above the ground surface is the extension, which has a sloping frustum structure. The extension is constructed by piling up the soil generated during the excavation of the reservoir foundation pit.

[0009] A fixing rod is provided on the lower side of the partition assembly, and the partition assembly is inserted into the soil and fixed to the water storage tank by means of the fixing rod.

[0010] The partition assembly includes a partition plate and a limiting tube. Two sets of partition plates are provided, and the two sets of partition plates are connected by a limiting tube arranged in the vertical direction. The fixing anchor bolt passes through the limiting tube and is inserted into the soil. The partition assembly is fixed to the water storage tank by the fixing anchor bolt.

[0011] The water storage tank also includes a transition zone located between the raw water zone and the purified water zone. The transition zone is configured with multiple stages and is equipped with transition partitions. Adjacent transition zones are separated by transition partitions. The raw water in the raw water zone enters the purified water zone after undergoing multi-stage overflow filtration in the transition zone.

[0012] The reservoir has a dumbbell-shaped structure, with the volumes of the raw water zone and the purified water zone both larger than the volume of the transition zone.

[0013] The water storage tank is also equipped with an integrated plate located at the bottom of the water storage tank. The two ends of the integrated plate are fixedly connected to the partition assemblies on both sides. The integrated plate is provided with a groove for the insertion and fixing of the transition partition. The transition partition is connected to the partition assemblies on both sides through the integrated plate and forms a whole.

[0014] An operating method for an energy-efficient and high-performance irrigation system for large fields includes the following steps: S1. Dig a pit in Datian to form a water storage pond; S2. Connect and fix the partition assembly to the water storage tank. Use the partition assembly to divide the water storage tank into a raw water area, a transition area and a clean water area. Then lay a protective layer at the bottom and around the water storage tank. S3. The water well is connected to the bottom of the raw water area by a water supply pump. The water well supplies water to the raw water area. After the raw water in the raw water area is filled, it overflows into the transition area along a set of baffle components. After the transition water in the transition area is filled, it overflows into the clean water area along another set of baffle components to form clean water for use. S4. The irrigation facility is connected to the bottom of the clean water area via a water pump. When irrigation is needed, simply turn on the water pump and use the irrigation facility to irrigate the field with clean water.

[0015] In step S3, the raw water area is connected to multiple sets of wells via a water supply pump, and the multiple sets of wells supply water to the raw water area in sequence via the water supply pump.

[0016] The beneficial effects of this invention are: 1. This invention incorporates a water storage tank for filtering and storing well water. The tank is divided into a raw water zone and a purified water zone by a partition assembly. When well water enters the raw water zone, it forms a buffer and stores water. As the water level rises in the raw water zone, the sediment in the well water, being denser, sinks to the bottom of the raw water zone under gravity. The purified water overflows through the top of the partition assembly and accumulates in the purified water zone for later use. This eliminates the need for an additional filter, avoiding water pressure loss caused by filtration. Sufficient water pressure is provided for irrigation, ensuring uniform water output at both the near and far ends of the irrigation facility, guaranteeing consistent crop growth. At the same time, the irrigation unit area is increased by nearly 10 times, significantly improving efficiency. High-lift water pumps are not required, reducing equipment purchase costs and operating energy consumption, thus meeting the needs of energy-efficient agricultural production.

[0017] 2. In this invention, a protective pad and a protective film are laid at the bottom and around the water storage tank. The protective film is made of plastic sheeting, which can effectively prevent soil particles from seeping into the water storage tank, maintaining the cleanliness of the water in the tank, and can also play a role in water storage, preventing the water in the water storage tank from seeping into the soil. The protective pad is made of soft and thick materials such as tarpaulin or cotton cloth, which can prevent branches or sharp objects in the soil from tearing the plastic film.

[0018] 3. In this invention, an extension is added above the foundation pit of the water storage tank. That is, by piling up a slope of soil above the foundation pit, the water storage tank is raised, which increases the volume of the water storage tank without seriously damaging the soil structure.

[0019] In addition, the extension of the reservoir is constructed using soil generated during the excavation of the foundation pit, eliminating the need for additional purchase or transportation of filling materials. This significantly reduces material costs and transportation time, and lowers construction difficulty. Furthermore, the extension is a sloping truncated cone structure, which distributes stress evenly. After the soil is piled up and compacted, it forms a stable slope that is less prone to collapse or landslides, thus enhancing the overall stability of the reservoir structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the irrigation system; Figure 2 This is a top view of the irrigation system. Figure 3 This is a side view of the partition assembly. Figure 4 This is a top view of the partition assembly. In the attached diagram, 1 is the irrigation facility, 2 is the water pump, 3 is the well, 4 is the reservoir, 401 is the raw water area, 402 is the purified water area, 403 is the transition area, 404 is the foundation pit, 405 is the extension, 5 is the partition assembly, 501 is the partition plate, 502 is the limiting pipe, 6 is the water supply pump, 7 is the protective pad, 8 is the protective membrane, 9 is the fixing rod, 10 is the fixing anchor bolt, 11 is the transition partition, and 12 is the integrated plate. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Specific embodiments, such as Figure 1-4 As shown, the present invention provides an energy-saving and efficient irrigation system for large fields, including a water supply unit and an irrigation facility 1. The irrigation facility 1 is connected to the purified water outlet of the water supply unit via a water pump 2. The water supply unit includes a well 3 and a water storage tank 4. The water storage tank 4 is divided into a raw water zone 401 and a purified water zone 402 by a partition assembly 5. The raw water zone 401 is connected to the well 3 via a water supply pump 6. The water in the raw water zone 401 overflows from the top of the partition assembly 5 into the purified water zone 402. The purified water zone 402 forms the purified water outlet of the water supply unit and is connected to the irrigation facility 1 via the water pump 2.

[0022] To address the problem of silt clogging the outlet of irrigation facility 1 in well water, a filter is typically added to the water supply pipeline to treat the well water. However, the filtration process results in significant water pressure loss, leading to insufficient water pressure at the far end of irrigation facility 1. This results in uneven irrigation, with sufficient water for crops near the facility and insufficient water for crops further away, affecting the uniformity of crop growth. Furthermore, the reduced water pressure slows down the water flow rate, prolonging irrigation time and reducing irrigation effectiveness. To compensate for the water pressure loss caused by filtration, some existing technologies use pumps with higher head for pressurized water supply. However, the purchase cost and operating energy consumption of high-head pumps increase significantly, failing to meet the energy-efficient requirements of agricultural production.

[0023] Therefore, a water storage tank 4 is added in this invention to filter and store well water. The water storage tank 4 is divided into a raw water zone 401 and a clean water zone 402 by a partition assembly 5. After the well water enters the raw water zone 401, it forms a buffer and stores water. During the process of the well water level rising in the raw water zone 401, the silt in the well water has a high density and will sink to the bottom of the raw water zone 401 under the action of gravity. The clean water overflows into the clean water zone 402 through the top of the partition assembly 5 and is stored for later use. Therefore, there is no need to set up an additional filter, avoiding water pressure loss caused by filtration. There is enough water pressure for irrigation, ensuring that the water output of the irrigation facility 1 is uniform at the near end and far end, ensuring the uniformity of crop growth. At the same time, the irrigation efficiency is improved, and there is no need to use a high-lift water pump, which reduces the equipment purchase cost and operating energy consumption, meeting the needs of energy-saving and efficient agricultural production.

[0024] Irrigation facility 1 can be a drip irrigation tape, suitable for drip irrigation, as well as medium or micro sprinkler irrigation.

[0025] In addition, the reservoir 4 in this invention is also provided with a top cover. The top cover can prevent people from accidentally falling into the reservoir 4 when walking in the field. On the other hand, it can prevent impurities such as fallen leaves, weeds, and debris from falling into the reservoir 4 and floating on the water surface, thus ensuring the cleanliness of the water source in the water purification area 402.

[0026] like Figure 1 As shown, the bottom and perimeter of the water storage tank 4 are covered with a protective layer, which includes a protective pad layer 7 and a protective film layer 8 located above the protective pad layer 7.

[0027] Since the water storage tank 4 is an earthen pit, the silt and sand at its bottom and around its perimeter will enter the tank and mix with the raw or purified water, causing secondary pollution of the water quality and increasing the probability of clogging of the irrigation facility 1. Therefore, in this invention, the bottom and perimeter of the water storage tank 4 are covered with a protective pad layer 7 and a protective film layer 8. The protective film layer 8 is made of plastic sheeting, which can effectively prevent silt and sand particles in the soil from seeping into the interior of the water storage tank 4, maintaining the cleanliness of the water in the tank, and also playing a role in water storage, preventing the water in the water storage tank 4 from seeping into the soil. The protective pad layer 7 is made of a relatively soft and thick material such as tarpaulin or cotton cloth, to prevent branches or sharp objects in the soil from tearing the plastic film.

[0028] like Figure 1-2 As shown, the area of ​​the water storage tank 4 below the ground surface is the foundation pit 404, which has a groove-shaped structure. The area of ​​the water storage tank 4 above the ground surface is the extension 405, which has a sloping frustum structure. The extension 405 of the water storage tank 4 is constructed by piling up the soil generated when excavating the foundation pit 404 of the water storage tank 4.

[0029] Traditional reservoirs 4 only include a foundation pit 404. To avoid severe damage to the soil structure, the field should not be dug too deep. Therefore, to ensure the volume of the reservoir 4, the area occupied by the reservoir 4 would be too large. In this application, an extension 405 is added above the foundation pit 404 of the reservoir 4. That is, by piling up an earthen slope above the foundation pit 404, the reservoir 4 is raised, which increases the volume of the reservoir 4 without severely damaging the soil structure.

[0030] In addition, the extension 405 of the reservoir 4 is constructed by piling up the soil generated during the excavation of the foundation pit 404, eliminating the need for additional purchase or transportation of filling materials, which greatly saves material costs and transportation time, and reduces construction difficulty. At the same time, the extension 405 is a sloping frustum structure, which is uniformly stressed. After the soil is piled up and compacted, it can form a stable slope, which is not easy to collapse or landslide, thus improving the overall stability of the reservoir 4.

[0031] like Figure 3 As shown, a fixing rod 9 is provided on the lower side of the partition assembly 5, and the partition assembly 5 is inserted into the soil and fixed to the water storage tank 4 by means of the fixing rod 9.

[0032] The baffle assembly 5 is prone to tipping over or shifting when raw water overflows or the water flow fluctuates, causing the raw water zone 401 to connect with the purified water zone 402 and losing its sedimentation and separation effect. Therefore, a fixing rod 9 is installed on the lower side of the baffle assembly 5. By directly inserting the fixing rod 9 into the soil at the bottom of the water storage tank 4, the friction and gripping force of the soil on the fixing rod 9 provides vertical support for the baffle assembly 5. This fixing method is simple and reliable, and can effectively resist the lateral impact force of the water flow on the baffle assembly 5, preventing the baffle assembly 5 from shifting or tipping over.

[0033] like Figure 3-4 As shown, the partition assembly 5 includes a partition plate 501 and a limiting tube 502. Two sets of partition plates 501 are provided, and the two sets of partition plates 501 are connected by the limiting tube 502 arranged in the vertical direction. The fixing anchor 10 passes through the limiting tube 502 and is inserted into the soil. The partition assembly 5 is fixed to the water storage tank 4 by the fixing anchor 10.

[0034] The partition assembly 5 in this invention has a double-layer partition plate 501 structure, which conceals the limiting tube 502 and the fixing anchor 10 within the partition chamber. When the protective layer is laid, the protective layer seals the top opening of the partition chamber, ensuring the continuity of the protective layer within the water storage tank 4. Simultaneously, because the limiting tube 502 and the fixing anchor 10 are concealed within the partition chamber, their ends will not contact the protective layer, preventing it from being punctured.

[0035] like Figure 1-2 As shown, the water storage tank 4 also includes a transition zone 403 located between the raw water zone 401 and the purified water zone 402. The transition zone 403 is provided with multiple stages, and a transition partition 11 is provided in the transition zone 403. Adjacent transition zones 403 are separated by the transition partition 11. The raw water in the raw water zone 401 enters the purified water zone 402 after undergoing multi-stage overflow filtration in the transition zone 403.

[0036] The single raw water zone 401 and purified water zone 402 are separated, primarily removing larger particles of silt from the well water. However, the effect on smaller particles of silt settling is limited. Therefore, this invention incorporates multiple transition zones 403 between the raw water zone 401 and the purified water zone 402. Well water must overflow through each transition zone 403 before entering the purified water zone 402. In each transition zone 403, the water flow rate slows down, allowing the remaining smaller particles of silt to continue settling, achieving a step-by-step filtration effect. As the number of transition zones 403 increases, the degree of water purification gradually improves, resulting in a significant reduction in silt content in the purified water entering the purified water zone 402.

[0037] like Figure 2 As shown, the water storage tank 4 has a dumbbell-shaped structure, and the volumes of the raw water zone 401 and the purified water zone 402 are both larger than the volume of the transition zone 403.

[0038] The raw water zone 401 has a large volume, which can accommodate a large amount of raw water transported from the well 3, providing sufficient space and time for sediment settling and ensuring that larger particles of sediment settle fully. The purified water zone 402 has a large volume, which can store enough purified water to meet the water supply during field irrigation and avoid long waiting times for water storage, thus affecting irrigation efficiency. The transition zone 403 has a small volume and forms a neck between the raw water zone 401 and the purified water zone 402, reducing the overall footprint of the reservoir 4.

[0039] like Figure 1 As shown, an integrated plate 12 is also provided in the water storage tank 4. The integrated plate 12 is located at the bottom of the water storage tank 4. Both ends of the integrated plate 12 are fixedly connected to the partition assemblies 5 on both sides. The integrated plate 12 is provided with a groove for inserting and fixing the transition partition 11. The transition partition 11 is connected to the partition assemblies 5 on both sides through the integrated plate 12 and forms a whole.

[0040] Since the transition zone 403 occupies a small space, inserting multiple sets of partition assemblies 5 and transition partitions 11 into this small space would cause the soil in the transition zone 403 to loosen, affecting the fixation effect between the individual partition assembly 5 or transition partition 11 and the soil. Therefore, only the partition assemblies 5 at both ends are fixed to the soil, and the transition partition 11 is fixed using the integrated plate 12.

[0041] An operating method for an energy-efficient and high-performance irrigation system for large fields includes the following steps: S1. Dig a pit in Datian to form a water storage pond 4; S2. Connect and fix the partition assembly 5 to the water storage tank 4. Use the partition assembly 5 to divide the water storage tank 4 into a raw water area 401, a transition area 403 and a clean water area 402. Then lay a protective layer at the bottom and around the water storage tank 4. S3, well 3 is connected to the bottom of raw water zone 401 by water supply pump 6. Well 3 supplies water to raw water zone 401. After the raw water in raw water zone 401 is filled, it overflows into transition zone 403 along a set of baffle assembly 5. After the transition water in transition zone 403 is filled, it overflows into clean water zone 402 along another set of baffle assembly 5 to form clean water for use. S4. Irrigation facility 1 is connected to the bottom of water purification area 402 via water outlet pump 2. When irrigation is needed, water outlet pump 2 can be turned on directly to irrigate the field with purified water through irrigation facility 1.

[0042] In step S1, the pit is dug in a dumbbell shape; in step S2, the partition assembly 5 is fixed first and then the protective layer is laid. This ensures that the partition assembly 5 is in place before the anti-leakage treatment is carried out, and also avoids the protective layer being damaged during the insertion process of the partition assembly 5.

[0043] In addition, after the irrigation period, if the water storage tank 4 is not needed for a long period of time, the water storage tank 4 can be backfilled.

[0044] like Figure 2 As shown, in step S3, the raw water zone 401 is connected to multiple sets of wells 3 via a water supply pump 6, and the multiple sets of wells 3 supply water to the raw water zone 401 in sequence via the water supply pump 6.

[0045] Because the pumping speed of water supply pump 6 is greater than the water storage speed of water well 3 during the pumping process, pumping from the primary water well 3 stops when the water level drops below the water level line. Well water is drawn from the next level well 3. Similarly, when the water level in the final level well 3 drops below the water level line, the water in the first level well 3 has been stored and can be drawn again by the water supply pump 6, thus forming a cycle and ensuring that the raw water area 401 can continuously obtain a sufficient water source.

Claims

1. A field energy-saving and efficient irrigation system, comprising a water supply unit and an irrigation facility (1), the irrigation facility (1) being connected with the clean water outlet end of the water supply unit by means of a water outlet pump (2), characterized in that, The water supply unit comprises a water well (3) and a water storage pool (4), the water storage pool (4) is divided into a raw water area (401) and a purified water area (402) by a partition assembly (5), the raw water area (401) is connected with the water well (3) by a water supply pump (6), the water in the raw water area (401) overflows along the top of the partition assembly (5) into the purified water area (402), the purified water area (402) forms a purified water outlet end of the water supply unit and is connected with the irrigation facility (1) by an outlet water pump (2).

2. The energy efficient field irrigation system of claim 1, wherein, The bottom and the peripheral side of the water storage pool (4) are paved with a protective layer, the protective layer comprises a protective cushion layer (7) and a protective film layer (8) above the protective cushion layer (7).

3. The energy efficient field irrigation system of claim 1, wherein, The area below the ground surface where the water storage pool (4) is located is a foundation pit part (404), the foundation pit part (404) has a groove structure, the area above the ground surface where the water storage pool (4) is located is an extension part (405), the extension part (405) has a slope-shaped circular table structure, and the extension part (405) of the water storage pool (4) is formed by soil piling up when the foundation pit part (404) of the water storage pool (4) is excavated.

4. The energy efficient field irrigation system of claim 1, wherein, The lower side of the partition assembly (5) is provided with a fixing rod (9), the partition assembly (5) is inserted and fixed into the water storage pool (4) by the fixing rod (9).

5. The energy efficient field irrigation system as claimed in claim 1, wherein, The partition assembly (5) comprises a partition plate (501) and a limiting pipe (502), the partition plate (501) is provided in two groups, the two groups of partition plates (501) are connected by the limiting pipe (502) arranged in the vertical direction, a fixed anchor bolt (10) passes through the limiting pipe (502) and is inserted into the soil, and the partition assembly (5) is fixed into the water storage pool (4) by the fixed anchor bolt (10).

6. The energy efficient field irrigation system as claimed in claim 1, wherein, The water storage pool (4) further comprises a transition area (403) between the raw water area (401) and the purified water area (402), the transition area (403) is provided with multiple levels, a transition partition plate (11) is arranged in the transition area (403), adjacent transition areas (403) are spaced by the transition partition plate (11), and raw water in the raw water area (401) flows through the transition area (403) for multi-stage overflow filtration and then enters the purified water area (402).

7. The energy efficient field irrigation system of claim 6, wherein, The water storage pool (4) has a dumbbell-shaped structure, and the volumes of the raw water area (401) and the purified water area (402) are greater than that of the transition area (403).

8. The energy efficient field irrigation system of claim 6, wherein, The water storage pool (4) is further provided with an integrated plate (12), the integrated plate is located at the bottom of the water storage pool, the two ends and the two sides of the integrated plate are fixedly connected with the partition assemblies (5), grooves for inserting and fixing the transition partition plates (11) are arranged on the integrated plate, and the transition partition plates (11) are connected with the partition assemblies on both sides by the integrated plate and formed as a whole.

9. The operating method of the energy-saving and efficient field irrigation system, for the energy-saving and efficient field irrigation system according to claim 1, characterized in that, The method comprises the following steps: S1, digging a pit in a field to form a water storage pool (4); S2, inserting and fixing a partition assembly (5) into the water storage pool (4), dividing the water storage pool (4) into a raw water area (401), a transition area (403) and a purified water area (402) by the partition assembly (5), and then paving a protective layer on the bottom and the peripheral side of the water storage pool (4). S3, the water well (3) is communicated with the bottom of the raw water area (401) by the water supply pump (6), the water well (3) supplies water to the raw water area (401), and the raw water in the raw water area (401) fills up and overflows into the transition area (403) along a set of partition assembly (5), and when the transition water in the transition area (403) fills up, it overflows into the purified water area (402) along another set of partition assembly (5) to form purified water for use; S4, the irrigation facility (1) is communicated with the bottom of the purified water area (402) by the water outlet pump (2), and when irrigation is needed, the water outlet pump (2) is directly opened, and the purified water can be directly irrigated to the field by the irrigation facility (1).

10. The method of operating a field energy efficient irrigation system of claim 9, wherein, The raw water area (401) in step S3 is connected with a plurality of water wells (3) by the water supply pump (6), and the plurality of water wells (3) supply water to the raw water area (401) by the water supply pump (6) in turn.

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