Rainwater recycling and storing device for garden drainage ditch
By adopting a stepped double water storage tank design and a magnetic attraction linkage mechanism in the garden drainage ditch, debris is automatically separated and cleaned, solving the problems of clogging and manual cleaning in existing devices, and realizing efficient rainwater recycling and drainage functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-31
AI Technical Summary
Existing rainwater harvesting devices in garden drainage ditches are prone to clogging when filtering debris, requiring frequent manual cleaning, which increases labor intensity and affects drainage performance.
It adopts a stepped double water storage tank design, combining the principles of gravity and magnetic attraction, and utilizes the linkage mechanism of iron barrel and filter plate to automatically separate and clean debris of different sizes, achieving automated cleaning of debris through gravity and magnetic attraction.
It enables automated separation and cleaning of debris, reduces manual labor intensity, ensures the normal operation of drainage ditches, avoids blockages, and improves rainwater recycling efficiency.
Smart Images
Figure CN121760438A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rainwater harvesting technology, and in particular to a rainwater harvesting and storage device for garden drainage ditches. Background Technology
[0002] Garden irrigation relies on surface water or tap water, while rainwater harvesting can provide alternative water sources, reducing dependence on municipal water supply. It stores water during the rainy season and uses it during the dry season, balancing the uneven spatial and temporal distribution of water resources. It is especially suitable for arid or semi-arid regions. Rainwater harvesting facilities (such as reservoirs and dry streams) can retain rainwater, delay runoff peaks, reduce the load on drainage systems, and reduce the risk of waterlogging. The collected rainwater can be used for irrigation. Rainwater is rich in nutrients, which are suitable for plant absorption, reducing the use of chemical fertilizers and promoting healthy plant growth.
[0003] In arid or semi-arid regions, rainfall intervals are long, resulting in a large amount of debris such as branches and leaves of varying sizes accumulating in drainage ditches. To ensure the cleanliness of collected rainwater during rainfall, existing rainwater harvesting devices often employ fixed filtration methods to filter out impurities such as branches and leaves. However, this fixed filtration method leads to the continuous accumulation of debris on the filtration mechanism, easily causing blockages. This requires frequent manual cleaning by staff, which is not only labor-intensive but also affects drainage and reduces the drainage performance of the ditch. Therefore, a rainwater harvesting and storage device for garden drainage ditches is proposed. Summary of the Invention
[0004] The purpose of this invention is to provide a rainwater recycling and storage device for garden drainage ditches, which can separate debris of different sizes and discharge them in different ways. It also utilizes the potential energy, gravity and magnetic attraction of water to automatically clean up the debris trapped during the water storage process, avoid clogging the drainage ditch and greatly reduce the intensity of manual labor.
[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a garden drainage ditch rainwater harvesting and storage device, comprising a first water storage tank and a second water storage tank arranged in a stepped manner below ground level, the top of the first water storage tank being lower than the bottom of the second water storage tank, the top of the second water storage tank being provided with a ditch communicating with the drainage ditch, and the tops of the first and second water storage tanks being jointly provided with a linkage mechanism, further comprising: The first filter plate is horizontally connected to the interior of the second water storage tank along the depth direction of the water tank. The second filter plate is parallel to the first filter plate and located above the first filter plate. A through hole is formed in the middle of the second filter plate along the thickness direction. The iron bucket is movably connected to the inside of the first water storage tank along the depth direction of the water tank. A connecting plate is also fixedly connected to the top, and a drain hole is opened on the side wall at the bottom. Its weight is less than the total weight of the second filter plate and the first filter plate. An electromagnet is fixedly installed at the bottom of the first water storage tank, directly below the iron barrel; The pressure switch is fixedly installed at the bottom of the first water storage tank, electrically connected to the electromagnet, and connected to a power source; The connecting hose has one end connected to the first water storage tank and located above the iron barrel, and the other end connected to the second water storage tank and located below the first filter plate.
[0006] By adopting the above technical solution, firstly, to match the overall aesthetics of the garden landscape, this device employs a concealed design concept, cleverly integrating it into the garden environment. It blends seamlessly with the surrounding scenery, preserving the original beauty of the garden and achieving a perfect unity of functionality and aesthetics. It connects to existing drainage ditches via trenches, ensuring seamless integration and coordinated operation with the existing drainage system. Secondly, the core of this device lies in its tiered double-reservoir design, consisting of a first reservoir and a second reservoir. This design fully utilizes the principles of natural gravity and magnetism. When rainwater flows into the second reservoir, it is drawn by gravitational potential energy through carefully arranged connecting hoses, which are located below ground level with an inner diameter of at least 50mm, facilitating a stable and efficient flow of rainwater. The rainwater flows into the first reservoir at a certain speed, achieving natural collection and orderly storage of rainwater resources. When the first reservoir begins to fill, that is, during the process of rainwater entering the first reservoir from the second reservoir through the connecting hose, some rainwater falls into the iron bucket. As the water volume gradually increases, the total weight of the iron bucket and its contents accumulates. When this weight exceeds the total weight of the second and first filter plates, the gravity generated by the iron bucket and its contents gradually overcomes the friction between the second and first filter plates and the inner wall of the second reservoir. At this point, the iron bucket slowly falls under the pull of gravity, driving the second and first filter plates upwards through a linkage mechanism. When the buoyancy of the iron bucket in the first reservoir increases, the water pressure accumulated inside the first reservoir reaches... When the pressure switch reaches its set value, the electromagnet is energized, and the magnetic force generated by the electromagnet further attracts the barrel downwards, ensuring that the second filter plate reaches its highest point. This automatically removes larger debris trapped by the second filter plate during filtration from the second water tank, achieving automated debris removal. Furthermore, when both the first and second water tanks are full, the first and second filter plates are at their highest points, with the top of the first filter plate flush with the top of the second water tank. At this point, because smaller debris such as leaves and other suspended impurities typically have a lower density than water, they naturally float on the surface of the water in the second water tank. The subsequent inflow of rainwater then easily removes these smaller debris. Suspended debris is flushed away. When water is pumped from the first reservoir, the water in the iron bucket automatically flows out through the drain hole. The weight of the iron bucket is less than the combined weight of the second and first filter plates. When the first reservoir is empty, the electromagnet is de-energized, ensuring that the second and first filter plates are at the bottom of the second reservoir, and the iron bucket is at the top of the first reservoir. This allows the second and first filter plates and the iron bucket to automatically reset when there is no water. This device eliminates the tedious process of frequent manual cleaning of debris required by traditional rainwater harvesting devices, greatly reducing labor intensity. In summary, this device connects and operates collaboratively with the existing drainage system, utilizing the potential energy, gravity, and magnetic attraction of water to separate debris of different sizes and discharge them in different ways.It automatically removes debris trapped during the water storage process, preventing blockages in drainage ditches and eliminating the tedious process of frequent manual cleaning required by traditional rainwater harvesting systems, thus greatly reducing labor intensity.
[0007] A further configuration of the present invention is as follows: the linkage mechanism includes a first bracket disposed at the top of the first water storage tank and a second bracket disposed at the top of the second water storage tank, wherein a plurality of pulleys are rotatably connected to the first bracket and the second bracket respectively; Also includes: The pull rope is wound around the pulley, with one end passing through the through hole and fixed to the side wall of the through hole, and the other end fixedly connected to the first filter plate.
[0008] By adopting the above technical solution, this device introduces a linkage mechanism composed of a pull rope and pulleys. The pull rope, the first bracket, the second bracket, and the pulleys on them together form a pulley system. When the iron barrel falls, it can efficiently drive the first filter plate and the second filter plate to move upward, ensuring the automated transmission of this device.
[0009] A further feature of the present invention is that the upper part of the first filter plate is a hollow structure, and the interior of the hollow structure is filled with filter sponge.
[0010] By adopting the above technical solution, when the first and second water storage tanks are full, the first filter plate is located at the top of the second water storage tank. The top of the first filter plate is level with the bottom of the ditch. On the one hand, this increases the filtration performance, enabling the first filter plate to filter mud and sand, and on the other hand, it ensures that the drainage ditch continues to flow, thus guaranteeing the drainage performance of the drainage ditch.
[0011] A further feature of the present invention is that the second filter plate is umbrella-shaped, and the edge of the second filter plate is lower than the middle.
[0012] By adopting the above technical solution, when the top of the first filter plate is level with the bottom of the trench, the second filter plate detaches from the second water storage tank and is located above the second water storage tank. The umbrella-shaped second filter plate facilitates the sliding of large debris such as intercepted leaves and branches off the second filter plate.
[0013] A further feature of the present invention is that the distance between the edge of the first filter plate and the inner wall of the second water storage tank is at least 5 mm, and a plurality of first rollers are rotatably connected to the outer edge of the second filter plate, with the first rollers in contact with the inner wall of the second water storage tank.
[0014] By adopting the above technical solution, there is a gap between the first filter plate and the second water storage tank to avoid friction between them. The first roller also reduces the friction between the second filter plate and the second water storage tank, reducing the difficulty of cleaning the trapped debris during the filtration process.
[0015] A further feature of the present invention is that a vertical pipe is fixedly connected to the inner bottom wall of the first water storage tank, the vertical pipe is parallel to the side wall of the first water storage tank, a plurality of connecting holes are opened at the bottom of the vertical pipe, the iron bucket is movably connected inside the vertical pipe along the depth direction of the water tank, and the distance between the iron bucket and the vertical pipe is at most 5mm.
[0016] By adopting the above technical solution, the through hole is used to connect the inside and outside of the vertical pipe, ensuring that the iron bucket can move up and down inside the vertical pipe. On the one hand, it ensures the stability of the iron bucket during the falling process. On the other hand, when the iron bucket is at the bottom of the vertical pipe, since the distance between the iron bucket and the vertical pipe is at most 5mm, the iron bucket will mainly bear the water pressure from above, ensuring the smoothness and reliability of the rising process of the first filter plate and the second filter plate.
[0017] A further feature of the present invention is that a rack is fixedly connected to the inner wall of the vertical tube along the axial direction, and a gear that meshes with the rack is rotatably connected to the outer surface of the iron bucket.
[0018] By adopting the above technical solution, the iron barrel can be moved up and down slowly inside the vertical pipe through the meshing transmission of gears and racks, thus slowing down the falling speed of the iron barrel and further ensuring the stability and reliability of the rising process of the first and second filter plates.
[0019] A further feature of the present invention is that a rubber ring is fixedly connected to the outer surface of the iron drum, and the distance between the rubber ring and the side wall of the vertical pipe is 2mm to 3mm.
[0020] By adopting the above technical solution, when the iron drum is at the bottom of the vertical pipe, the water pressure above the iron drum acts on the rubber ring, further increasing the stability of the iron drum.
[0021] A further feature of the present invention is that a dual-outlet extension pipe is fixedly connected to the bottom of the first bracket, the inlet end of the dual-outlet extension pipe is fixedly connected to the outlet of the connecting hose, and one of the outlets of the dual-outlet extension pipe is located above the iron bucket.
[0022] By adopting the above technical solution, it is ensured that some rainwater can flow into the iron drum, the water flow path is optimized, and the second filter plate and the first filter plate can move upward to discharge the garbage.
[0023] The beneficial effects of this invention are: 1. Automated cleaning mechanisms reduce labor intensity: When the first reservoir begins to fill, some rainwater falls into the iron bucket. The diameter of the drain hole can be 1mm to 5mm, set according to the local rainfall, so that the rate at which water fills the iron bucket is greater than the rate at which water flows out of the drain hole. As the amount of water in the iron bucket increases, the total weight of the iron bucket and the water inside it accumulates. When this weight exceeds the total weight of the first and second filter plates, the iron bucket falls under the combined action of gravity and the linkage mechanism. At the same time, an electromagnet is introduced. Both the pressure switch and the electromagnet are waterproof. When the water pressure accumulated inside the first reservoir reaches the set value of the pressure switch... When the electromagnet is connected to the power supply via a pressure switch, and the water pressure inside the first water tank does not reach the set value of the pressure switch, the electromagnet is de-energized. The electromagnet barrel is electrically charged but has no residual magnetism when de-energized. Utilizing the principle of electromagnetism, the iron barrel can be moved to the bottom of the first water tank. Through the linkage mechanism between the first and second water tanks, the first and second filter plates are moved upwards to the highest point, which can lift the second filter plate outside the second water tank. This automatically removes larger debris trapped by the second filter plate during the filtration process from the second water tank, greatly reducing labor intensity.
[0024] 2. Self-cleaning function for suspended debris: When both the first and second reservoirs are full, the first and second filter plates are at their highest points, meaning the second filter plate is positioned above the second reservoir. This allows large debris such as leaves and branches to be discharged from the second reservoir. At this point, the first filter plate is level with the top of the water in the second reservoir. Because smaller debris such as leaves and other suspended impurities typically have a lower density than water, they naturally float on the surface of the water in the second reservoir. The suspended debris can then flow through the channels into the drainage ditch, where it is washed away by the subsequent rainwater flowing into the ditch. Larger debris has been discharged into the second water storage tank by the second filter plate. This is equivalent to cleaning up the larger debris that was originally in the drainage ditch during water storage. Therefore, smaller leaves and other suspended impurities greatly reduce the occurrence of drainage ditch blockage. This device separates debris of different sizes through two filter plates and discharges them into the second water storage tank in different ways. Therefore, the normal drainage function of the drainage ditch is not affected during rainwater harvesting. This device eliminates the tedious process of frequent manual cleaning of debris required by traditional rainwater harvesting devices, further reducing the intensity of manual labor. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the iron bucket of the present invention. Figure 3 This is an enlarged structural diagram of point A in the figure of the present invention; Figure 4 This is a cross-sectional view of the filter sponge of the present invention located at the top of the second water storage tank; Figure 5 This is a top view of the second filter plate of the present invention; Figure 6 This is a schematic diagram of the structure of the first filter plate of the present invention; Figure 7 This is a top view schematic diagram of the connection between the second water storage tank and the trench in this invention; Figure 8 This is a cross-sectional structural diagram of the vertical pipe and iron barrel of the present invention.
[0027] In the diagram: 1. Ground; 2. First water storage tank; 3. Connecting hose; 4. First filter plate; 5. Filter sponge; 6. Second filter plate; 7. Second water storage tank; 8. Trench; 9. First roller; 10. Through hole; 11. Pull rope; 12. Second bracket; 13. Pulley; 14. Double outlet extension pipe; 15. Connecting plate; 16. First bracket; 17. Iron barrel; 18. Vertical pipe; 19. Gear; 20. Rack; 21. Rubber ring; 22. Pressure switch; 23. Connecting hole; 24. Electromagnet; 25. Drain hole. Detailed Implementation
[0028] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0029] Reference Figures 1-8A rainwater harvesting and storage device for garden drainage ditches includes a first water storage tank 2 and a second water storage tank 7 arranged in a stepped manner below ground level. The top of the first water storage tank 2 is lower than the bottom of the second water storage tank 7. The top of the second water storage tank 7 is provided with a ditch 8 that communicates with the drainage ditch. The tops of the first water storage tank 2 and the second water storage tank 7 are jointly provided with a linkage mechanism. The device also includes: a first filter plate 4, which is horizontally connected to the interior of the second water storage tank 7 along the depth direction of the water tank; a second filter plate 6, which is parallel to the first filter plate 4 and located above the first filter plate 4, with a through hole 10 in the middle along the thickness direction; and an iron bucket 17, which is movably connected to the interior of the first water storage tank 2 along the depth direction of the water tank, and a connecting plate 1 is fixedly connected to its top. 5. A drain hole 25 is provided on the bottom side wall, and its weight is less than the total weight of the second filter plate 6 and the first filter plate 4; an electromagnet 24 is fixedly installed at the bottom of the first water storage tank 2 and located directly below the iron barrel 17; a pressure switch 22 is fixedly installed at the bottom of the first water storage tank 2, electrically connected to the electromagnet 24, and connected to a power source; a connecting hose 3 is connected at one end to the first water storage tank 2 and located above the iron barrel 17, and at the other end to the second water storage tank 7 and located below the first filter plate 4; First, in order to match the overall aesthetics of the garden landscape, this device adopts a concealed design concept, cleverly integrating it into the garden environment, so that it can blend seamlessly with the surrounding scenery. It is connected to the existing drainage ditch through the trench 8 to ensure that it is connected to and operates in coordination with the existing drainage system. Secondly, the core of this device lies in its stepped dual-reservoir design, namely the first reservoir 2 and the second reservoir 7. This design fully utilizes the principles of natural gravity and magnetism. When rainwater flows into the second reservoir 7, it is drawn in by gravitational potential energy through a carefully arranged connecting hose 3, which is located below ground level and has an inner diameter of at least 50mm. This allows rainwater to flow into the first reservoir 2 at a stable and efficient rate, achieving the natural convergence and orderly storage of rainwater resources. Furthermore, when the first reservoir 2 begins to fill with water, that is, during the process of rainwater flowing from the second reservoir 7 into the first reservoir 2 through the connecting hose 3, some rainwater falls into the iron bucket 17. As the water volume gradually increases, the total weight of the iron bucket 17 and the water inside it continuously accumulates. When this weight exceeds the total weight of the second filter plate 6 and the first filter plate 4, the gravity generated by the iron bucket 17 and the water inside it gradually overcomes the friction between the second filter plate 6 and the first filter plate 4 and the inner wall of the second water storage tank 7. At this time, the iron bucket 17 slowly falls under the pull of gravity, and through the linkage mechanism, it drives the second filter plate 6 and the first filter plate 4 to move upward. When the buoyancy of the iron bucket 17 in the first water storage tank 2 increases, and the water pressure accumulated in the first water storage tank 2 reaches the set value of the pressure switch 22, the electromagnet 24 is energized. The magnetic attraction generated by the electromagnet 24 further attracts the iron bucket 17 to move downward, ensuring that the second filter plate 6 can reach the highest point, and automatically cleans out the larger debris trapped by the second filter plate 6 during filtration from the second water storage tank 7.The system achieves automated debris removal. When both the first and second water tanks 2 and 7 are full, the first filter plate 4 and the second filter plate 6 are at their highest points, with the top of the first filter plate 4 flush with the top of the second water tank 7. At this point, because smaller debris such as leaves and other suspended impurities typically have a lower density than water, they naturally float on the surface of the water in the second water tank 7. The subsequent inflow of rainwater then easily washes away these suspended debris. When water is pumped from the first water tank 2, the water in the iron bucket 17 automatically flows out through the drain hole 25. The weight of the iron bucket 17 is less than the combined weight of the second filter plate 6 and the first filter plate 4. When the first water tank 2 is empty, the electromagnet 24 is de-energized. This device ensures that the second filter plate 6 and the first filter plate 4 are located at the bottom of the second water storage tank 7, and the iron bucket 17 is located at the top of the first water storage tank 2. It allows the second filter plate 6, the first filter plate 4, and the iron bucket 17 to automatically reset when there is no water. This device eliminates the tedious process of frequent manual cleaning of debris required by traditional rainwater harvesting devices, greatly reducing labor intensity. In summary, this device connects and operates collaboratively with the existing drainage system, utilizing the potential energy, gravity, and magnetic attraction of water to separate debris of different sizes and discharge them in different ways. It automatically cleans up debris trapped during water storage, preventing blockage of drainage ditches and eliminating the tedious process of frequent manual cleaning required by traditional rainwater harvesting devices, greatly reducing labor intensity.
[0030] The linkage mechanism includes a first support 16 located at the top of the first water storage tank 2 and a second support 12 located at the top of the second water storage tank 7. Multiple pulleys 13 are rotatably connected to the first support 16 and the second support 12 respectively. It also includes a pull rope 11, which is wound around the pulleys 13. One end passes through the through hole 10 and is fixed to the side wall of the through hole 10. The other end is fixedly connected to the first filter plate 4, and the other end is fixedly connected to the connecting plate 15. This device introduces a linkage mechanism composed of pull rope 11 and pulleys 13. The pull rope 11, the first support 16 and the second support 12 and the pulleys 13 on them together form a pulley system. When the iron barrel 17 falls, it can efficiently drive the first filter plate 4 and the second filter plate 6 to move upward, ensuring the automated transmission of this device.
[0031] The upper part of the first filter plate 4 is a hollow structure, and the interior of the hollow structure is filled with filter sponge 5. When the first water storage tank 2 and the second water storage tank 7 are full, the first filter plate 4 is located at the top of the second water storage tank 7. The top of the first filter plate 4 is level with the bottom of the ditch 8. On the one hand, this increases the filtration performance, enabling the first filter plate 4 to filter mud and sand, and on the other hand, it ensures that the drainage ditch continues to flow water, thus guaranteeing the drainage performance of the drainage ditch.
[0032] The second filter plate 6 is umbrella-shaped, with its edges lower than its center. When the top of the first filter plate 4 is level with the bottom of the trench 8, the second filter plate 6 detaches from the second water storage tank 7 and is positioned above the second water storage tank 7. The umbrella-shaped second filter plate 6 facilitates the sliding of large debris such as intercepted leaves and branches off the second filter plate 6.
[0033] The distance between the edge of the first filter plate 4 and the inner wall of the second water storage tank 7 is at least 5mm. The outer edge of the second filter plate 6 is rotatably connected with multiple first rollers 9. The first rollers 9 are in contact with the inner wall of the second water storage tank 7. There is a gap between the first filter plate 4 and the second water storage tank 7 to avoid friction between them. The first rollers 9 also reduce the friction between the second filter plate 6 and the second water storage tank 7, reducing the difficulty of cleaning the trapped debris during the filtration process.
[0034] A vertical pipe 18 is fixedly connected to the inner bottom wall of the first water storage tank 2. The vertical pipe 18 is parallel to the side wall of the first water storage tank 2. Multiple connecting holes 23 are opened at the bottom of the vertical pipe 18. The iron bucket 17 is movably connected inside the vertical pipe 18 along the depth direction of the water tank. The distance between the iron bucket 17 and the vertical pipe 18 is at most 5mm. The connecting holes 23 are used to connect the inside and outside of the vertical pipe 18, ensuring that the iron bucket 17 moves up and down inside the vertical pipe 18. On the one hand, this ensures the stability of the iron bucket 17 during the falling process. On the other hand, when the iron bucket 17 is at the bottom of the vertical pipe 18, since the distance between the iron bucket 17 and the vertical pipe 18 is at most 5mm, the iron bucket 17 will mainly bear the water pressure from above, ensuring the smoothness and reliability of the rising process of the first filter plate 4 and the second filter plate 6.
[0035] A rack 20 is fixedly connected to the inner wall of the vertical tube 18 along the axial direction. A gear 19 that meshes with the rack 20 is rotatably connected to the outer surface of the iron bucket 17. Through the meshing transmission between the gear 19 and the rack 20, the iron bucket 17 can be slowly moved up and down inside the vertical tube 18, reducing the falling speed of the iron bucket 17 and further ensuring the smoothness and reliability of the rising process of the first filter plate 4 and the second filter plate 6.
[0036] A rubber ring 21 is fixedly connected to the outer surface of the iron bucket 17. The distance between the rubber ring 21 and the side wall of the vertical pipe 18 is 2mm to 3mm. When the iron bucket 17 is at the bottom of the vertical pipe 18, the water pressure above the iron bucket 17 acts on the rubber ring 21, which further increases the stability of the iron bucket 17.
[0037] The bottom of the first bracket 16 is fixedly connected to a dual-outlet extension pipe 14. The inlet end of the dual-outlet extension pipe 14 is fixedly connected to the outlet of the connecting hose 3. One of the outlets of the dual-outlet extension pipe 14 is located above the iron bucket 17, ensuring that some rainwater can flow into the iron bucket 17, optimizing the water flow path, and further ensuring that the second filter plate 6 and the first filter plate 4 can move upward to discharge garbage.
[0038] The present invention has the following effects: 1. When the first water storage tank 2 begins to store water, some rainwater falls into the iron bucket 17. The diameter of the drain hole 25 can be 1mm to 5mm, set according to the local rainfall, so that the rate at which water fills the iron bucket 17 is greater than the rate at which water flows out of the drain hole 25. As the amount of water in the iron bucket 17 increases, the total weight of the iron bucket 17 and the water inside it continuously accumulates. When this weight exceeds the total weight of the first filter plate 4 and the second filter plate 6, the iron bucket 17 falls under the combined action of gravity and the linkage mechanism. At the same time, an electromagnet 24 is introduced. Both the pressure switch 22 and the electromagnet 24 have waterproof performance. When the water pressure accumulated inside the first water storage tank 2 reaches the pressure switch 22... When the set value is reached, the electromagnet 24 is connected to the power supply through the pressure switch 22. When the water pressure inside the first water tank 2 does not reach the set value of the pressure switch 22, the electromagnet 24 is de-energized. The electromagnet 24 is magnetic when energized and has no residual magnetism when de-energized. Utilizing the principle of electromagnetism, the iron bucket 17 can be moved to the bottom of the first water tank 2. Through the linkage mechanism between the first water tank 2 and the second water tank 7, the first filter plate 4 and the second filter plate 6 are moved upward to the highest point. The second filter plate 6 can be lifted outside the second water tank 7, and the larger debris trapped by the second filter plate 6 during the filtration process is automatically cleaned out of the second water tank 7, which greatly reduces the labor intensity.
[0039] 2. Self-cleaning function for suspended debris: When the first reservoir 2 and the second reservoir 7 are full, both the first filter plate 4 and the second filter plate 6 are at their highest points, meaning the second filter plate 6 is above the second reservoir 7. This allows large debris such as leaves and branches to be discharged from the second reservoir 7. At this time, the first filter plate 4 is level with the top of the water in the second reservoir 7. Since smaller debris such as leaves and other suspended impurities usually have a lower density than water, they will naturally float on the surface of the water in the second reservoir 7. The suspended debris can flow into the drainage ditch through the ditch 8 and be washed away by the rainwater flowing into the ditch 8. Since larger debris has been discharged from the second storage tank 7 by the second filter plate 6, it is equivalent to cleaning up the larger debris that was originally in the drainage ditch during water storage. Therefore, smaller leaves and other suspended impurities greatly reduce the occurrence of drainage ditch blockage. This device separates debris of different sizes through two filter plates and discharges them into the second storage tank 7 in different ways. Therefore, the normal drainage function of the drainage ditch is not affected during rainwater harvesting. This device eliminates the tedious process of frequent manual cleaning of debris required by traditional rainwater harvesting devices, further reducing the intensity of manual labor.
Claims
1. A rainwater harvesting and storage device for garden drainage ditches, characterized in that: The system includes a first and a second water storage tank arranged in a stepped manner below ground level. The top of the first water storage tank is lower than the bottom of the second water storage tank. The top of the second water storage tank is provided with a ditch communicating with a drainage ditch. The tops of the first and second water storage tanks are jointly provided with a linkage mechanism. The system also includes: The first filter plate is horizontally connected to the interior of the second water storage tank along the depth direction of the water tank. The second filter plate is parallel to the first filter plate and located above the first filter plate. A through hole is formed in the middle of the second filter plate along the thickness direction. The iron bucket is movably connected to the inside of the first water storage tank along the depth direction of the water tank. A connecting plate is also fixedly connected to the top, and a drain hole is opened on the side wall at the bottom. Its weight is less than the total weight of the second filter plate and the first filter plate. An electromagnet is fixedly installed at the bottom of the first water storage tank, directly below the iron barrel; The pressure switch is fixedly installed at the bottom of the first water storage tank, electrically connected to the electromagnet, and connected to a power source; The connecting hose has one end connected to the first water storage tank and located above the iron barrel, and the other end connected to the second water storage tank and located below the first filter plate.
2. The garden drainage ditch rainwater harvesting and storage device according to claim 1, characterized in that: The linkage mechanism includes a first bracket set at the top of the first water storage tank and a second bracket set at the top of the second water storage tank, with multiple pulleys rotatably connected to the first and second brackets respectively. Also includes: The pull rope is wound around the pulley, with one end passing through the through hole and fixed to the side wall of the through hole, and the other end fixedly connected to the first filter plate.
3. A garden drainage ditch rainwater harvesting and storage device according to claim 1, characterized in that: The upper part of the first filter plate is a hollow structure, and the interior of the hollow structure is filled with filter sponge.
4. A garden drainage ditch rainwater harvesting and storage device according to claim 1, characterized in that: The second filter plate is umbrella-shaped, with its edges lower than its center.
5. A garden drainage ditch rainwater harvesting and storage device according to claim 1, characterized in that: The distance between the edge of the first filter plate and the inner wall of the second water storage tank is at least 5 mm. The outer edge of the second filter plate is rotatably connected with a plurality of first rollers, and the first rollers are in contact with the inner wall of the second water storage tank.
6. A rainwater harvesting and storage device for garden drainage ditches according to claim 1, characterized in that: A vertical pipe is fixedly connected to the inner bottom wall of the first water storage tank. The vertical pipe is parallel to the side wall of the first water storage tank. Multiple connecting holes are opened at the bottom of the vertical pipe. The iron bucket is movably connected inside the vertical pipe along the depth direction of the water tank. The distance between the iron bucket and the vertical pipe is at most 5mm.
7. A rainwater harvesting and storage device for garden drainage ditches according to claim 6, characterized in that: A rack is fixedly connected axially to the inner wall of the vertical pipe, and a gear that meshes with the rack is rotatably connected to the outer surface of the iron barrel.
8. A rainwater harvesting and storage device for garden drainage ditches according to claim 7, characterized in that: A rubber ring is fixedly connected to the outer surface of the iron drum, and the distance between the rubber ring and the side wall of the vertical pipe is 2mm to 3mm.
9. A rainwater harvesting and storage device for garden drainage ditches according to claim 1, characterized in that: The bottom of the first bracket is fixedly connected to a dual-outlet extension pipe. The inlet end of the dual-outlet extension pipe is fixedly connected to the outlet of the connecting hose. One of the outlets of the dual-outlet extension pipe is located above the iron bucket.