A sponge-type river bank slope top

Abstract

The present application relates to the technical field of river bank structure, improves the problem that the existing technology lacks the function of regulating the flow of the river channel, and discloses a sponge-type river bank slope top, which includes slope top pavement; drainage module; water filter module; water intake module; water replenishment module; a first overflow pipe is connected to the upper end of the water storage module, and the other end is inserted into the soil; one end of the second overflow pipe passes through the river bank to the river channel, and the other end passes through the soil; one end of the first replenishment pipe is connected to the lower end of the water storage module, and the other end passes through the river bank to the river channel; one end of the second replenishment pipe passes through the river bank to the river channel, and the other end passes through the soil; the first overflow pipe, the second overflow pipe, the first replenishment pipe, and the second replenishment pipe are all filled with water absorbing medium. The present application can periodically absorb or replenish the water in the river channel, thereby improving the utilization rate of rainwater.

Description

Technical Field

[0001] The present application relates to the technical field of riverbank structures, and in particular to a sponge-type riverbank slope top. Background Art

[0002] Traditional river embankment structures mainly rely on hard materials (such as concrete and stones) to build embankments to resist the impact of floods. However, the hard materials of traditional river embankment structures block the connection between the embankment and the surrounding ecosystem, destroying the natural ecological balance. Moreover, under extreme climatic conditions, traditional river embankments may not be able to effectively resist floods and there is a risk of embankment collapse. They often lack sustainability and are difficult to adapt to long-term climate change and ecological needs.

[0003] The sponge-type river embankment slope top structure in the prior art is mainly composed of slope protection step modules, deep purification diversion areas, vegetation cover layers and other parts. The slope protection step module is the basic part of the sponge-type river embankment slope top structure, which is composed of multiple stepped modules arranged side by side. Each module is equipped with a landscape water collection mechanism and a filtration water collection layer to collect and treat rainwater. The deep purification diversion area is located between the slope protection step modules, playing a role of connection and transition. The vegetation cover layer is laid on the side surface of the slope of the slope protection step module, and is mainly composed of a planting matrix layer and plants.

[0004] However, the river channel undergoes a periodic alternation of dry season and wet season. During the wet season, there is too much water, and if there is a continuous rainy season, the rising rainwater easily exceeds the carrying capacity of the river bank, causing floods. During the dry season, the river water level drops, resulting in sediment accumulation, or insufficient water downstream.

[0005] With respect to the above-mentioned related technologies, the existing sponge-type river bank slope top structure lacks corresponding measures for regulating river flow and has relatively single functions. Summary of the invention

[0006] In order to improve the problem that the prior art lacks the function of regulating river flow, the present application provides a sponge-type river embankment slope top.

[0007] The following technical solutions are adopted: A sponge-type river bank slope top, comprising: a slope top pavement, arranged on the upper end surface of the river bank; a water storage module, arranged in the soil in the river bank; a drainage module, arranged along the length direction of the slope top pavement close to the river channel, for receiving the surface runoff of the slope top pavement; the drainage module is connected to the water storage module through a drainage pipe; a water filter module is arranged between the drainage module and the water storage module and connected to the drainage pipe; a water intake module is arranged on the upper surface of the river bank and draws water from the water storage module through the water intake pipe; a water replenishment module, comprising a first overflow pipe, a second overflow pipe, ... A water supply pipe and a second water supply pipe; one end of the first overflow pipe is connected to the upper end of the water storage module, and the other end is inserted into the soil; one end of the second overflow pipe passes through the river bank to the river channel, and the other end passes through the soil; one end of the second overflow pipe in the river channel is located between the flood water level and the normal water level; one end of the first water supply pipe is connected to the lower end of the water storage module, and the other end passes through the river bank to the river channel; one end of the second water supply pipe passes through the river bank to the river channel, and the other end passes through the soil; one end of the first water supply pipe and the second water supply pipe in the river channel are located between the normal water level and the low water level.

[0008] By adopting the above technical scheme, the design realizes the effective management and utilization of rainwater on the top of the river bank slope through the organic combination of slope top pavement, water storage module, drainage module, water filtration module, water intake module and water replenishment module. The drainage module receives the runoff from the surface of the slope top pavement, which is filtered by the water filtration module and then introduced into the water storage module for storage by the drainage pipe. The water replenishment module automatically adjusts the water volume of the water storage module according to the changes in the water level of the river channel to ensure the rational use of water resources. It can periodically absorb excess water in the river channel during the flood season and replenish water for the river channel during the dry season. It improves the utilization rate of rainwater on the top of the river bank slope, reduces the erosion of the river channel by rainwater runoff, and increases the stability and ecological effect of the river bank.

[0009] Optionally, one-way check valves are provided at one end of the first overflow pipe and the second overflow pipe close to the river channel.

[0010] By adopting the above technical solution, the one-way check valve prevents water from flowing back to the water storage module from the overflow pipe when not needed, ensuring the unidirectionality of the water flow. The water management efficiency of the water storage module is improved, unnecessary waste of water resources is avoided, and the stability and reliability of the system are enhanced.

[0011] Optionally, a water filter end piece is provided at one end of the second water supply pipe located in the soil, and the water filter end piece includes a gabion and a geotextile filter layer.

[0012] By adopting the above technical solution, the water filter end piece filters the water to remove sand, impurities and pollutants, thereby ensuring the cleanliness of the water entering the river and preventing soil loss.

[0013] Optionally, the drainage module includes a plurality of first drainage channel blocks and a plurality of second drainage channel blocks connected end to end in sequence; at least two second drainage channel blocks are arranged between two adjacent first drainage channel blocks; a main drainage trough is provided through the first drainage channel block, and an auxiliary water trough is provided through the second drainage channel block, and the main drainage trough and the auxiliary water trough are connected to form a continuous waterway; the main drainage trough and the auxiliary water trough are both upwardly penetrated to form an opening; the first drainage channel block is rotatably connected to a primary water filter plate, which can cover the opening of the main drainage trough; the second drainage channel block is rotatably connected to an auxiliary water filter plate, which can cover the opening of the auxiliary water trough; the rotating ends of the primary water filter plate and the auxiliary water filter plate are both away from the slope top pavement; a plurality of primary water filter holes are provided through the surface arrays of the primary water filter plate and the auxiliary water filter plate; a basic shell is provided on the side of the active channel block away from the slope top pavement; a rotation drive component for driving the primary water filter plate to rotate is provided in the basic shell; a synchronization component for synchronous movement is provided between the auxiliary water filter plate and the primary water filter plate.

[0014] By adopting the above technical solution, the drainage module is composed of the first drainage channel block and the second drainage channel block alternately, forming a continuous waterway and a drainage channel structure. The primary water filter plate and the auxiliary water filter plate can rotate to cover the waterway opening, and can be opened and closed by rotating the drive assembly. The drainage efficiency is improved, and the design of the water filter plate effectively prevents debris from entering the waterway, ensuring the unobstructed flow of the waterway.

[0015] Optionally, the cross-section of the main drainage trough is fan-shaped; one end of the first-level water filter plate is fixedly connected to the second-level water filter plate; the second-level water filter plate rotates coaxially with the first-level water filter plate; the second-level water filter plate is set at an angle to the first-level water filter plate; and a plurality of second-level water filter holes are arranged in an array on the second-level water filter plate.

[0016] By adopting the above technical solution, the fan-shaped main drainage trough and the angled secondary water filter plate increase the contact area between the water flow and the water filter plate, improving the filtering effect, further improving the filtering quality of the water body, and ensuring that the water entering the water storage module is cleaner.

[0017] Optionally, the rotation drive assembly includes a driving rod, a power rod and a magnetic roller; one end of the power rod is inserted into the main drainage groove, and the magnetic roller is rotatably connected to the end of the power rod; the magnetic roller abuts the secondary water filter plate, and the secondary water filter plate is made of metal; the other end of the power rod is inserted into the basic shell; the driving rod is rotatably connected to the basic shell along its own axis, and the driving rod is coaxially connected to the driving gear; the power rod is provided with translation teeth along the length, and the translation teeth are meshed with the driving gear.

[0018] By adopting the above technical solution, the water filter plate can be controlled by using the driving rod, the power rod and the magnetic roller, which simplifies the operation process, improves the work efficiency, and ensures the stability and reliability of the rotation of the water filter plate.

[0019] Optionally, the driving rod is provided with an operating block, which passes through the outer wall of the basic shell to the outside, and a hexagonal groove is provided on the surface of the operating block; a control hole is provided along the axis of the operating block, and one end of the driving rod is inserted into the control hole; a limited rotation groove is provided on the inner wall of the operating block along the length direction, and the driving rod is provided with a limited rotation block that can slide in the limited rotation groove; the operating block is threadedly matched with the basic shell.

[0020] By adopting the above technical solution, the operation block and the rotation limiting block are used in combination to ensure the stability and controllability of the driving rod during the rotation process. The operation block and the basic housing thread can be self-locking.

[0021] Optionally, the synchronization component includes a synchronization connection seat and a synchronization rod; at least two synchronization connection seats are arranged on the inner wall of the first-level water filter plate, and the synchronization rod passes through several synchronization connection seats; at least two synchronization connection seats and a synchronization rod are also arranged on the inner wall of the auxiliary water filter plate; a combination slot is opened at the end of the synchronization rod; a combination end column is interference fit in the combination slot, and the combination end column can pass through the combination slot to an adjacent combination slot.

[0022] By adopting the above technical solution, the synchronous movement of the primary filter plate and the auxiliary filter plate is achieved through the coordinated use of the synchronous connection seat and the synchronous rod, thereby ensuring the overall coordination and stability of the drainage module and improving the drainage efficiency.

[0023] Optionally, the water filter module includes a water filter cylinder and a filter body; the water filter cylinder is rotatably connected to the basic shell, and the filter body is arranged in the water filter cylinder; the outer wall of the water filter cylinder is circumferentially provided with rotating teeth, and the drive rod is coaxially provided with a linkage gear, and the linkage gear and the rotating teeth are driven by a toothed synchronous belt; the drain pipe includes a connecting section and a lower row section; one end of the connecting section can be connected to the inside of the water filter cylinder, and the other end is connected to the main drainage groove; one end of the lower row section can be connected to the water filter cylinder, and the other end is connected to the water storage module; the first-level water filter plate and the auxiliary water filter plate are both provided with a plurality of backwash holes at one end away from the slope top pavement; the first-level water filter plate is provided with a main water passage connecting the plurality of backwash holes thereon; the auxiliary water filter plate is provided with a docking water passage connecting the plurality of backwash holes thereon, and the main water passage is connected to the docking water passage; the water intake module is connected to the main water passage through a backwash pipe; the backwash pipe is connected to the water filter cylinder.

[0024] By adopting the above technical solution, the water filter module filters the water entering the water storage module, and the drainage pipe is responsible for guiding the filtered water into the water storage module. At the same time, the design of the backwash hole and the backwash pipe realizes the backwash function of the water filter plate. It further improves the filtration quality of the water body, prolongs the service life of the water filter plate, and ensures the unobstructed drainage system.

[0025] Optionally, a cylindrical rotating seat is provided at the bottom of the base shell, and the water filter cylinder is coaxially rotatably connected to the cylindrical rotating seat; the water filter cylinder is arranged parallel to the driving rod; the inner wall of the cylindrical rotating seat is sequentially penetrated with a first interface, a second interface, a third interface and a fourth interface; a partition is provided in the water filter cylinder in a direction perpendicular to the rotation axis, and the partition divides the water filter cylinder into an upper filter chamber and a lower water outlet chamber; a plurality of water-permeable grooves are provided in an array on the partition; the filter body is filled with the upper filter chamber; the filter body is provided with a water drawing groove along the central axis; a water inlet pipe is provided in the water filter cylinder, one end of the water inlet pipe passes through the outer wall of the water filter cylinder and is connected to the outside, and the other end is The lower water outlet chamber starts from the lower water outlet chamber, bends, and passes through the partition along the axis of the water filter cylinder to the water drawing trough; a liquid outlet is opened on the side wall of the lower water outlet chamber; the water inlet pipe can be connected with the first interface and the connecting section after rotating with the water filter cylinder, and at this time, the liquid outlet, the second interface and the lower row section are connected; the backwash pipe includes a water delivery section and a flushing section; the water delivery section connects the water intake module and the cylindrical rotating seat; the flushing section connects the main water passage and the cylindrical rotating seat; after the basic rotating cylinder can be rotated, the water delivery section, the third interface and the water inlet pipe are connected, and at this time, the flushing section, the fourth interface and the liquid outlet are connected.

[0026] By adopting the above technical solution, the water filter cylinder is rotatably connected to the base shell, and the synchronous control of the water filter cylinder is realized through the coordinated use of the driving rod and the linkage gear. At the same time, the design of the water inlet pipe and the backwash pipe realizes the water inlet and backwashing functions of the water filter cylinder. The filtration efficiency is improved, the operation process is simplified, and the stability and reliability of the water filter cylinder are guaranteed.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. Improved rainwater utilization and water resource management efficiency: Through the overall sponge-type river embankment slope design, effective collection, filtration, storage and utilization of rainwater are achieved, improving the utilization and management efficiency of water resources.

[0028] 2. Enhanced the stability and ecological effect of the river bank: Through the reasonable design of drainage and water replenishment modules, the erosion of the river channel by rainwater runoff is reduced. At the same time, it can periodically absorb excess water in the river channel during the flood season and replenish water for the river channel during the dry season.

[0029] 3. Through the design of rotating drive components, synchronous components and water filtration modules, the operation process is simplified, the work efficiency is improved, and the maintenance cost is reduced, which provides a strong guarantee for the long-term stable operation of the river embankment slope top. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a schematic diagram of the overall structure of this embodiment; Figure 2 It is a schematic diagram of the side cross-sectional structure of the main control channel block; Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at point A; Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at B Figure 5 is a schematic diagram of the structure of the rotation drive assembly; Figure 6 It is a schematic diagram of the combined structure of the main control channel block and two filling channel blocks; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure at C; Figure 8 2 is a schematic diagram of the cross-sectional structure of the hydrophobic layer; Fig. 9 It is a schematic diagram of the cross-sectional structure of the basic drum from the side; Fig.10 It is a schematic diagram of the cross-sectional structure of the basic drum from top view; Fig.11 yes Figure 2 Enlarged structural diagram at D.

[0031] Description of reference numerals: 11. Slope top paving; 12. Water storage module; 13. Drainage module; 14. Water filtration module; 15. Water intake module; 151. Water intake pipe; 16. Water replenishment module; 161. First overflow pipe; 162. Second overflow pipe; 163. First replenishment pipe; 164. Second replenishment pipe; 2. First drainage channel block; 21. Main drainage trough; 22. Primary water filter plate; 221. Primary water filter hole; 222. Articulated groove; 223. Rotating shaft; 224. Sliding groove; 225. Control groove; 226. Trigger groove; 23. Secondary water filter plate; 231. Secondary water filter hole; 25. Drainage layer shell; 26. Drain pipe; 261. Connecting section; 262. Lower drainage section; 3. Basic shell; 31. Articulated block; 33. Cylindrical rotating seat; 331. First interface; 332. Second interface; 333. Third interface; 334. Fourth interface; 4. Second drainage channel block; 41. Auxiliary water tank; 42. Auxiliary water filter plate; 421. Auxiliary water filter hole; 5. Rotation drive assembly; 51. Drive rod; 511. Rotation limit block; 52. Operation block; 521. Control hole; 522. Rotation limit groove; 523. Hexagonal groove; 53. Drive gear; 54. Power rod; 541. Translation teeth; 542. Magnetic roller; 55. Linkage gear; 551. Synchronous belt; 6. Synchronous assembly; 61. Synchronous connecting seat; 62. Synchronous rod; 621. Combined slot; 63. Combined end column; 7. Water filter module; 71. Water filter cylinder; 711. Upper filter chamber; 712. Lower water outlet chamber; 713. Liquid outlet; 714. Rotating teeth; 72. Baffle; 721. Water permeable groove; 73. Water inlet pipe; 74. Cylinder cover; 75. Filter body; 751. Water drawer groove; 81. recoil strip; 811. recoil hole; 812. docking water channel; 813. first cylinder; 82. main water channel; 821. synchronous water channel; 83. docking water channel; 84. recoil pipe; 841. water delivery section; 842. flushing section; 85. trigger block; 851. second cylinder; 86. rotating rod; 861. slot; 87. elastic element. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 To Attachment Figure 8 This application is described in further detail.

[0033] In order to provide a comprehensive application of rainfall to replenish river water or transfer river water. That is, to purify and collect rainwater and sewage and regulate the water volume of the river. The embodiment of the present application discloses a sponge-type river bank slope top, which uses sponge city technology to purify and collect rainwater and sewage on the river bank slope top, and store the collected rainwater. When the water level of the river is too low, the water in the stored water can be replenished into the river. When the water level of the river is too high, part of the water in the river can continue to be stored to achieve the regulation of the water volume of the river.

[0034] Specifically, a sponge-type river bank slope top is constructed based on a concrete reinforced structure or a stone stacking structure. It includes a slope top pavement 11, a water storage module 12, a drainage module 13, a water filtration module 14, a water intake module 15 and a water replenishment module 16. The slope top pavement 11 is a road surface set on the top of the river bank slope. The slope top pavement 11 adopts permeable materials such as permeable asphalt concrete and permeable cement concrete. Rainwater can infiltrate into the roadbed soil through the slope top pavement 11, reducing the surface runoff and increasing the infiltration rate. The infiltrated water is stored in the soil. The drainage module 13 is set along the length direction of the slope top pavement 11 close to the river channel, and is used to receive the excessive runoff on the surface of the slope top pavement 11. The drainage module 13 is connected to the water storage module 12 through a drainage pipe 26. The water storage module 12 is set in the soil below the slope top pavement 11. The water storage module 12 adopts an existing PP (polypropylene) reservoir, which is an efficient and flexible rainwater collection and storage structure. The underground PP water storage tank is mainly composed of a plurality of PP rainwater slow release monomers. These monomer modules are made of injection molding materials. The PP water storage module can be customized into modules of different shapes and sizes according to actual needs. By combining modules of different numbers and shapes, water storage tanks of various volumes and shapes can be flexibly constructed. There are a large number of water storage spaces inside the module, and at the same time it has a high compressive strength and can withstand a certain ground load. The water intake module 15 is a water pump with a protective box, and the water intake module 15 is arranged on the ground surface, that is, the upper surface of the river bank. The water intake module 15 is connected to the water storage module 12 through the water intake pipe 151, which is used to take part of the water stored in the water storage module 12. At this point, the filtration and storage of rainwater are formed. Furthermore, the water replenishment module 16 includes a first overflow pipe 161, a second overflow pipe 162, a first replenishment pipe 163 and a second replenishment pipe 164. One end of the first overflow pipe 161 is connected to the upper end of the water storage module 12, and the other end is inserted into the soil after being tilted horizontally or downward, and is used to introduce excess water in the water storage module 12 into the soil. After the water storage module 12 is full, the excess water is input into the soil through the first overflow pipe 161. One end of the second overflow pipe 162 passes through the river bank to the river channel, and the other end passes through the soil, and is used to send excess water in the river channel into the soil. One end of the second overflow pipe 162 in the river channel is located between the flood level and the normal water level. When the river water overflows the second overflow pipe 162, the water seeps into the soil through the second overflow pipe 162. One end of the first replenishment pipe 163 is connected to the lower end of the water storage module 12, and the other end passes through the river bank to the river channel, and is used to send water in the water storage module 12 into the river channel. One end of the second water supply pipe 164 passes through the river bank to the river channel, and the other end passes through the soil to deliver the water in the soil to the river channel. One end of the first water supply pipe 163 and the second water supply pipe 164 in the river channel is located between the normal water level and the low water level. When the water level of the river is lower than the low water level, the first water supply pipe 163 and the second water supply pipe 164, water seeps from the soil into the river channel.The second water replenishment pipe 164 is located higher than the first water replenishment pipe 163, and when the water level of the river drops, water is replenished from the soil first.

[0035] Specifically, the drainage module 13 is arranged on the side of the slope top pavement 11 close to the river. The drainage module 13 is arranged in the length direction of the slope top pavement 11. The drainage module 13 is connected to the water storage module 12 through the drainage pipe 26. The drainage module 13 digests the excessive surface runoff on the surface of the slope top pavement 11, purifies the water body and inputs it into the water storage module 12. The drainage module 13 includes a plurality of first drainage channel blocks 2 and a plurality of second drainage channel blocks 4 connected end to end in sequence. At least two second drainage channel blocks 4 are arranged between two adjacent first drainage channel blocks 2, and the plurality of second drainage channel blocks 4 between the two first drainage channel blocks 2 are evenly divided into two groups, and the plurality of second drainage channel blocks 4 in each group are connected to each other and then connected to a first drainage channel block 2. The first drainage channel block 2 is generally arranged along a straight line, and the second drainage channel block 4 can be bent, and the second drainage channel block 4 at the excessive bending part (greater than thirty degrees) is independently arranged. The drainage module 13 is formed by excavating a long strip groove on both sides of the slope top pavement 11, and the first drainage channel block 2 and the second drainage channel block 4 are laid therein. The upper surface of the drainage module 13 is slightly lower than the upper surface of the slope top pavement 11, and the upper surface of the drainage module 13 is higher than the upper surface of the river bank, forming a stepped structure. Excess water flow first flows into the drainage module 13 and then enters the river. Further, the first drainage channel block 2 is provided with a main drainage trough 21. With the gravity direction as a reference, the main drainage trough 21 is connected at both ends in the vertical gravity direction, and the main drainage trough 21 penetrates the upper wall of the first drainage channel block 2 upward to form an opening. Rainwater enters the main drainage trough 21 through the opening and flows along both ends to form a water flow. Similarly, the second drainage channel block 4 is also provided with an auxiliary water trough 41. The auxiliary water trough 41 penetrates both ends of the second drainage channel block 4 along the length direction, and penetrates the second drainage channel block 4 upward to form an opening for rainwater to enter. The main drainage trough 21 and the auxiliary water trough 41 are connected to form a continuous waterway for water flow. The water in the auxiliary water trough 41 and the main drainage trough 21 can flow to each other, but eventually converge in the main drainage trough 21. In order to prevent excessive debris from entering the main drainage trough 21 or the auxiliary water trough 41, a primary water filter plate 22 is rotatably connected to the upper part of the first drainage channel block 2, and the primary water filter plate 22 can cover the opening at the upper end of the main drainage trough 21. Similarly, an auxiliary water filter plate 42 that can cover the opening is rotatably connected to the second drainage channel block 4. A plurality of primary water filter holes 221 are formed in an array on the surface of the primary water filter plate 22 and the auxiliary water filter plate 42, and water enters the main drainage trough 21 and the auxiliary water trough 41 through the primary water filter holes 221.

[0036] Furthermore, one-way check valves are provided at the ends of the first overflow pipe 161 and the second overflow pipe 162 near the river channel to prevent water from flowing back. One-way check valves belong to the prior art and will not be described in detail here. The end of the first overflow pipe 161 at one end in the soil is wrapped with geotextile to prevent sand and soil from entering the pipe. After the river water rises to submerge the pipe, the second overflow pipe 162 transports excess water to the soil, so the end of the second overflow pipe 162 in the soil is also wrapped with geotextile. One end of the second water supply pipe 164 located in the soil is provided with a water filter end piece, which includes a gabion and a geotextile filter layer. The gabion is filled with crushed stones, which are connected to the second water supply pipe 164, and the geotextile filter layer is wrapped on the outside of the gabion. The sand and soil are filtered through the geotextile filter layer, and further filtered in combination with the crushed stones, and a capillary effect is formed, making it easier for water to seep out and preventing soil and water loss. It is worth noting that the first overflow pipe 161 and the first water replenishment pipe 163 are arranged in correspondence with the number of water storage modules 12, and each water storage module 12 is provided with a first overflow pipe 161 and a first water replenishment pipe 163. However, the second overflow pipe 162 and the second water replenishment pipe 164 are arranged in a row on the river bank in the order of the river flow direction. And the horizontal height of the output end of the first water replenishment pipe 163 and the second water replenishment pipe 164 is lower than the horizontal height of the input end.

[0037] In order to increase the efficiency of cleaning the drainage module 13, the impurities on the surface can be directly discharged into the river water to avoid secondary cleaning. The present application also provides a drainage module 13 cleaning solution. Furthermore, the rotating parts of the primary water filter plate 22 and the auxiliary water filter plate 42 are close to the river channel, so that the primary water filter plate 22 and the auxiliary water filter plate 42 form an angle with the slope top pavement 11 after rotation, and the impurities are caused to slide into the river channel under the action of gravity. A basic shell 3 is provided on the side of the active channel block away from the slope top pavement 11, and the basic shell 3 is a rectangular shell structure. A rotating drive component 5 for driving the primary water filter plate 22 to rotate is provided in the basic shell 3. It is worth noting that the second drainage channel block 4 is not provided with a basic shell 3, only to ensure the continuous flow of the water body. A synchronous component 6 for synchronous movement is provided between the auxiliary water filter plate 42 and the primary water filter plate 22, so that the rotating drive component 5 drives the auxiliary water filter plate 42 to rotate while controlling the rotation of the primary water filter plate 22.

[0038] In order to make the water flowing into the water storage module 12 from the main drainage trough 21 cleaner and avoid corruption in the water storage module 12. A water filter module 7 is also arranged between the drainage pipe 26 and the water storage module 12, and the water filter module 7 is arranged in the basic shell 3 for easy installation. The primary water filter plate 22 and the auxiliary water filter plate 42 are both provided with a plurality of backwash holes 811 at one end away from the slope top pavement 11. When the primary water filter plate 22 and the auxiliary water filter plate 42 are rotated to open, water flows out through the backwash holes 811 to flush the surface of the primary water filter plate 22 and the auxiliary water filter plate 42, so that impurities can slide onto the slope top pavement 11 more easily. The primary water filter plate 22 is provided with a main water passage 82 connected to the plurality of backwash holes 811 thereon. The auxiliary water filter plate 42 is also provided with a docking water passage 83 connected to the plurality of backwash holes 811 thereon. The main water passage 82 is connected to the docking water passage 83. The water intake module 15 is connected to the main water channel 82 through the backwash pipe 84. The water intake module 15 extracts water from the water storage module 12, injects the water into the main water channel 82 through the backwash pipe 84, and flows into the docking water channel 83 at the same time, until the water flows out of the backwash holes 811 on the primary water filter plate 22 and the auxiliary water filter plate 42, thereby flushing the surface of the primary water filter plate 22 and the auxiliary water filter plate 42.

[0039] In order to further filter impurities in rainwater and prevent impurities from falling directly into the waterway after the primary water filter plate 22 rotates. A secondary water filter plate 23 is fixedly connected to one end of the primary water filter plate 22, and the secondary water filter plate 23 rotates coaxially with the primary water filter plate 22. The base shell 3 protrudes a number of hinge blocks 31 in the direction of the slope top pavement 11. The primary water filter plate 22 is provided with a hinge groove 222 for inserting the hinge block 31. A rotating shaft 223 is passed through one end of the primary water filter plate 22. The rotating shaft 223 passes through the primary water filter plate 22 and the hinge block 31, thereby forming a relative rotation of the primary water filter plate 22 and the hinge block 31. The cross-section of the main drainage trough 21 is a fan-shaped structure. The secondary water filter plate 23 is inside the main drainage trough 21 and extends along the radial direction of the main drainage trough 21 to abut the inner wall. The secondary water filter plate 23 is gap-matched with the main drainage trough 21. The primary water filter plate 22 is located outside, and a sinking groove is provided on the first drainage channel block 2 to allow the primary water filter plate 22 to sink into the extended surface of the upper surface of the first drainage channel block 2. In order to prevent the water flow from entering the main drainage channel 21 quickly, causing the water flow to be turbulent and affecting the water inflow. The primary water filter plate 22 and the secondary water filter plate 23 are arranged at an angle, and the angle is preferably between forty-five degrees and ninety degrees. A plurality of secondary water filter holes 231 are arranged in an array on the surface of the secondary water filter plate 23. A drainage layer shell 25 is provided on one side of the first drainage channel block 2 close to the slope top pavement 11. The drainage layer shell 25 is a rectangular structure, and the drainage layer shell 25 is connected to the main drainage channel 21. The surface runoff water passes through the primary water filter plate 22 and enters the main drainage channel 21, and then flows out of the main drainage channel 21 after passing through the secondary water filter plate 23 and enters the drainage layer shell 25. The inner wall at the bottom of the drainage layer shell 25 is contracted and connected to the drainage pipe 26. The water flows down through the drainage layer shell 25 to the drainage pipe 26 and enters the next process.

[0040] Similarly, in order to prevent impurities from entering the auxiliary water tank 41, a secondary water filter plate 23 can also be provided in the auxiliary water tank 41. The auxiliary water tank 41 has the same shape as the main drainage tank 21. However, the auxiliary water tank 41 does not have a drainage layer housing 25. The auxiliary water tank 41 is provided with the same sink.

[0041] Furthermore, the rotation drive assembly 5 includes a driving rod 51, a power rod 54 and a magnetic roller 542. One end of the power rod 54 is located in the basic shell 3, and the other end passes through the outer wall of the basic shell 3 and the outer wall of the active channel block in sequence to the main drainage groove 21. The magnetic roller 542 is rotatably connected to the end of the power rod 54 perpendicular to the length direction of the power rod 54, and is located in the main drainage groove 21. The magnetic roller 542 abuts against the outer wall of the secondary water filter plate 23 away from the primary water filter plate 22. The secondary water filter plate 23 is made of metal, and the magnetic roller 542 is adsorbed and rolled on the surface of the secondary water filter plate 23. The driving rod 51 is rotatably connected to the basic shell 3 along its own axis, and the driving rod 51 is coaxially connected to the driving gear 53. The power rod 54 is provided with translation teeth 541 along the length direction, and the translation teeth 541 are meshed with the driving gear 53. The driving rod 51 is provided with an operating block 52, and the operating block 52 passes through the outer wall of the basic shell 3 to the outside, and a hexagonal groove 523 is provided on the surface of the operating block 52. A control hole 521 is provided along the axis of the operating block 52, and one end of the driving rod 51 passes through the control hole 521. A limited rotation groove 522 is provided on the inner wall of the operating block 52 along the length direction, and the driving rod 51 is provided with a limited rotation block 511 that can slide in the limited rotation groove 522. The basic shell 3 is provided with a socket for the operating block 52 to pass through, and the operating block 52 is threadedly matched with the socket. Rotating the driving rod 51 allows the power that is engaged by the translation teeth 541 and the driving gear 53 to move synchronously. Since the operating block 52 is threadedly matched with the socket, the operating block 52 can be self-locked after rotation, preventing reversal under the action of gravity after the external force is withdrawn, thereby improving the stability of the primary water filter plate 22 after rotation.

[0042] Furthermore, the synchronization component 6 includes a synchronization connection seat 61 and a synchronization rod 62. At least two synchronization connection seats 61 are provided on the inner wall of the primary water filter plate 22, and the synchronization rod 62 passes through a plurality of synchronization connection seats 61. At least two synchronization connection seats 61 and a synchronization rod 62 are also provided on the inner wall of the auxiliary water filter plate 42. A combination slot 621 is provided at the end of the synchronization rod 62. A combination end column 63 is interference-fitted in the combination slot 621, and the combination end column 63 can pass through the combination slot 621 to the adjacent combination slot 621. The primary water filter plate 22 and the auxiliary water filter plate 42 are combined together by providing the synchronization rod 62 and the combination end column 63 one by one, so that the two groups can move simultaneously.

[0043] Furthermore, the water filter module 7 includes a water filter cylinder 71 and a filter body 75. In other embodiments, the water filter cylinder 71 can be fixedly connected to the base shell 3. The drain pipe 26 is connected to the water filter cylinder 71. The filter body 75 is arranged in the water filter cylinder 71, and the water in the drain pipe 26 enters the water storage module 12 after passing through the filter body 75, thereby filtering the water body to ensure the cleanliness of the water body. The drain pipe 26 includes a connecting section 261 and a lower row section 262. One end of the connecting section 261 can be connected to the inside of the water filter cylinder 71, and the other end is connected to the main drain tank 21. One end of the lower row section 262 can be connected to the water filter cylinder 71, and the other end is connected to the water storage module 12.

[0044] Since the water storage module 12 stores water for a long time, the tiny substances in the water body are easy to precipitate or condense into blocks after long-term use. When the water intake module 15 extracts and sends it to the main water channel 82, in order to avoid blocking the main water channel 82, the water body needs to be filtered twice to ensure the cleanliness of the water body. The primary water filter plate 22 and the auxiliary water filter plate 42 are both provided with a plurality of backwash holes 811 at one end away from the slope top pavement 11. The primary water filter plate 22 is provided with a main water channel 82 connected to the plurality of backwash holes 811 thereon. The auxiliary water filter plate 42 is provided with a docking water channel 83 connected to the plurality of backwash holes 811 thereon, and the main water channel 82 and the docking water channel 83 are connected. The water intake module 15 is connected to the main water channel 82 through a backwash pipe 84. The backwash pipe 84 is connected to the water filter cylinder 71.

[0045] Furthermore, a cylindrical rotating seat 33 is provided at the bottom of the base shell 3, and the water filter cylinder 71 is coaxially rotatably connected in the cylindrical rotating seat 33. The water filter cylinder 71 is arranged in parallel with the driving rod 51. The connecting section 261 and the lower row section 262 are connected to the cylindrical rotating seat 33, and the inner wall of the cylindrical rotating seat 33 is sequentially penetrated with a first interface 331, a second interface 332, a third interface 333 and a fourth interface 334. A partition 72 is provided in the water filter cylinder 71 in the direction perpendicular to the rotating axis 223, and the partition 72 separates the water filter cylinder 71 into an upper filter chamber 711 and a lower water outlet chamber 712. A plurality of water-permeable grooves 721 are formed in an array on the partition 72. The filter body 75 is filled in the upper filter chamber 711. The filter body 75 is provided with a water-drawing groove 751 along the central axis. The water filter cylinder 71 is provided with a water inlet pipe 73, one end of which passes through the outer wall of the water filter cylinder 71 to communicate with the outside, and the other end starts from the lower water outlet cavity 712, bends and passes through the partition 72 along the axis of the water filter cylinder 71 to the water draw tank 751. A liquid outlet 713 is provided through the side wall of the lower water outlet cavity 712. The water inlet pipe 73 can be rotated with the water filter cylinder 71 to communicate with the first interface 331 and the connecting section 261. At this time, the liquid outlet 713, the second interface 332 and the lower discharge section 262 are connected.

[0046] Furthermore, the backwash pipe 84 includes a water delivery section 841 and a flushing section 842. One end of the water delivery section 841 is connected to the water intake module 15, and the other end is connected to the cylindrical rotating seat 33. One end of the flushing section 842 is connected to the main water passage 82, and the other end is connected to the cylindrical rotating seat 33. After the basic rotation energy is rotated, the water delivery section 841, the third interface 333 and the water inlet pipe 73 are connected. At this time, the flushing section 842, the fourth interface 334 and the liquid outlet 713 are connected. The outer wall of the water filter cylinder 71 is circumferentially provided with teeth, and the drive rod 51 is coaxially provided with gears, and the gears and teeth are driven by a toothed synchronous belt 551. The main water passage 82 extends to the rotating shaft 223, and the flushing section 842 of the backwash pipe 84 passes through the inner wall of the protective shell to the main drainage groove 21 and extends to the position of the rotating shaft 223 and is connected to the main water passage 82. The main water channel 82 and the connecting water channel 83 both avoid the primary water filtering hole 221 .

[0047] Furthermore, one end of the water filter cylinder 71 passes through the base shell 3 to the outside, but the upper end surface of the water filter cylinder 71 is immersed in the upper surface extension surface of the base shell 3. A detachable cylinder cover 74 is provided at this end of the water filter cylinder 71. Removing the cylinder cover 74 can expose the internal space, so that the filter body 75 can be taken out or put in from the upper filter cavity 711, thereby realizing the replacement of the filter body 75. The cylinder cover 74 is preferably threadedly connected to the water filter cylinder 71.

[0048] Furthermore, a cover plate may be added to the surface of the base shell 3 to protect the hexagonal groove 523 and the cylinder cover 74 .

[0049] Furthermore, in order to make the surface of the primary water filter plate 22 smoother and prevent the backwash hole 811 from being blocked, a sliding groove 224 is provided on the upper surface of the primary water filter plate 22 along the length direction, and the sliding groove 224 is located at a position of the primary water filter plate 22 away from the river channel. A recoil bar 81 is slidably connected in the sliding groove 224, and the recoil bar 81 can partially pass through the extended surface of the upper surface of the primary water filter plate 22 after sliding. The backwash hole 811 is provided on the side of the recoil bar 81 close to the river channel. A docking waterway 812 is provided in the recoil bar 81, and one end of the docking waterway 812 can be connected to the main waterway 82 after sliding with the recoil bar 81. At this time, the recoil bar 81 passes through the sliding groove 224, and the recoil hole 811 corresponds to the outer surface of the primary water filter plate 22. The recoil strip 81 can slide into the sliding groove 224, and cause the docking water channel 812 and the main water channel 82 to be misaligned, and the main water channel 82 is closed by the outer wall of the recoil strip 81. The docking water channel 812 is a U-shaped structure. It is worth noting that the recoil holes 811 are short holes arranged in an interval array, while the main water channel 82 and the docking water channel 812 are both continuous long strip grooves, and one end of the plurality of recoil holes 811 is connected to the same docking water channel 812, and the other end passes through the recoil strip 81 to the outside.

[0050] Furthermore, the primary water filter plate 22 is also provided with a control groove 225 and a trigger groove 226. One end of the control groove 225 is connected to the sliding groove 224, and the other end is connected to the trigger groove 226. The trigger groove 226 is parallel to the sliding groove 224, and a trigger block 85 is slidably connected in the trigger groove 226. A rotating rod 86 is rotatably connected in the control groove 225. The middle part of the rotating rod 86 is rotatably connected to the primary water filter plate 22. Both ends of the rotating rod 86 are provided with a straight groove 861 along the length direction. A first cylinder 813 is provided at one end of the recoil bar 81, which can slide and rotate in the straight groove 861 at one end of the rotating rod 86. The trigger block 85 is also provided with a second cylinder 851 that can slide and rotate in the straight groove 861 at the other end of the rotating rod 86. An elastic element 87 is provided between the rotating rod 86 and the groove wall of the control groove 225. The elastic element 87 makes the recoil bar 81 always have a tendency to pass out of the sliding groove 224.

[0051] Similarly, in order to allow water to enter the docking waterway 83 to backwash the auxiliary water filter plate 42 and prevent the backwash hole 811 on the auxiliary water filter plate 42 from being blocked, the auxiliary water filter plate 42 is also provided with a sliding groove 224, a control groove 225 and a trigger groove 226, and is also provided with a backwash bar 81, a rotating rod 86, a trigger block 85 and an elastic element 87. The docking waterway 83 and the main waterway 82 both include a synchronous waterway 821, which is arranged along the length direction of the river channel and is interconnected.

[0052] The implementation principle of a sponge-type river bank slope top in the embodiment of the present application is: Rainwater infiltrates into the roadbed soil through the slope top pavement 11, and the infiltrated water is stored in the soil. The drainage module 13 receives the excess runoff on the surface of the slope top pavement 11 and is connected to the water storage module 12 through the drainage pipe 26. The water storage module 12 stores water. The water intake module 15 takes part of the water stored in the water storage module 12.

[0053] The water replenishment module 16 guides the excess water in the water storage module 12 into the soil through the first overflow pipe 161. The second overflow pipe 162 sends the excess water in the river channel into the soil. The first water replenishment pipe 163 sends the water in the water storage module 12 into the river channel. The second water replenishment pipe 164 sends the water in the soil into the river channel. When the water level of the river is lower than the low water level, the first water replenishment pipe 163 and the second water replenishment pipe 164 allow the water to seep out of the soil into the river channel.

[0054] After the primary filter plate 22 and the auxiliary filter plate 42 rotate, they form an angle with the slope top pavement 11, so that the impurities slide under the action of gravity and fall into the river channel.

[0055] The water intake module 15 extracts water from the water storage module 12, injects the water into the main water channel 82 through the backwash pipe 84, and flows into the docking water channel 83 at the same time, until the water flows out from the backwash holes 811 on the primary water filter plate 22 and the auxiliary water filter plate 42, thereby flushing the surface of the primary water filter plate 22 and the auxiliary water filter plate 42.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sponge-type river bank slope top, characterized in that: include: The slope top pavement (11) is arranged on the upper end surface of the river bank; A water storage module (12) is arranged in the soil inside the river bank; A drainage module (13) is arranged along the length direction of the slope top pavement (11) on one side close to the river channel, and is used to receive surface runoff of the slope top pavement (11); the drainage module (13) is connected to the water storage module (12) via a drainage pipe (26); A water filter module (14) is arranged between the drainage module (13) and the water storage module (12), and is connected to the drainage pipe (26); A water intake module (15) is arranged on the upper surface of the river bank and draws water from the water storage module (12) through a water intake pipe (151); The water replenishment module (16) comprises a first overflow pipe (161), a second overflow pipe (162), a first replenishment pipe (163) and a second replenishment pipe (164); one end of the first overflow pipe (161) is connected to the upper end of the water storage module (12), and the other end is inserted into the soil; one end of the second overflow pipe (162) passes through the river bank to the river channel, and the other end passes through the soil; one end of the second overflow pipe (162) in the river channel is located between the flood water level and the normal water level; one end of the first replenishment pipe (163) is connected to the lower end of the water storage module (12), and the other end passes through the river bank to the river channel; one end of the second replenishment pipe (164) passes through the river bank to the river channel, and the other end passes through the soil; one end of the first replenishment pipe (163) and the second replenishment pipe (164) in the river channel is located between the normal water level and the low water level.

2. A sponge-type river bank slope top according to claim 1, characterized in that: One-way check valves are provided at the ends of the first overflow pipe (161) and the second overflow pipe (162) close to the river channel.

3. The sponge-type river bank slope top according to claim 1, characterized in that: One end of the second water supply pipe (164) located in the soil is provided with a water filter end piece, the water filter end piece comprising a gabion and a geotextile filter layer; the gabion is filled with crushed stones, the gabion is connected to the second water supply pipe (164), and the geotextile filter layer is wrapped around the outside of the gabion.

4. The sponge-type river bank slope top according to claim 1, characterized in that: The drainage module (13) comprises a plurality of first drainage channel blocks (2) and a plurality of second drainage channel blocks (4) connected end to end in sequence; at least two of the second drainage channel blocks (4) are arranged between two adjacent first drainage channel blocks (2); The first drainage channel block (2) is provided with a main drainage trough (21) through it, and the second drainage channel block (4) is provided with an auxiliary water trough (41) through it, the main drainage trough (21) and the auxiliary water trough (41) are connected to form a continuous waterway; the main drainage trough (21) and the auxiliary water trough (41) are both connected upwards to form an open opening; The first drainage channel block (2) is rotatably connected to a primary water filter plate (22), and the primary water filter plate (22) can cover the open opening of the main drainage channel (21); the second drainage channel block (4) is rotatably connected to an auxiliary water filter plate (42), and the auxiliary water filter plate (42) can cover the open opening of the auxiliary water channel (41); the rotation ends of the primary water filter plate (22) and the auxiliary water filter plate (42) are both away from the slope top pavement (11); a plurality of primary water filter holes (221) are formed in an array on the surface of the primary water filter plate (22) and the auxiliary water filter plate (42); A base shell (3) is provided on a side of the active channel block away from the slope top pavement (11); a rotation drive component (5) for driving the primary water filter plate (22) to rotate is provided in the base shell (3); and a synchronization component (6) for synchronous movement is provided between the auxiliary water filter plate (42) and the primary water filter plate (22).

5. The sponge-type river bank slope top according to claim 4, characterized in that: The main drainage trough (21) has a fan-shaped cross section; one end of the primary water filter plate (22) is fixedly connected to a secondary water filter plate (23); the secondary water filter plate (23) rotates coaxially with the primary water filter plate (22); the secondary water filter plate (23) is arranged at an angle to the primary water filter plate (22); and a plurality of secondary water filter holes (231) are arranged in an array on the secondary water filter plate (23).

6. The sponge-type river bank slope top according to claim 5, characterized in that: The rotation drive assembly (5) comprises a driving rod (51), a power rod (54) and a magnetic roller (542); one end of the power rod (54) penetrates into the main drainage groove (21), and the magnetic roller (542) is rotatably connected to the end of the power rod (54); the magnetic roller (542) abuts against the secondary water filter plate (23), and the secondary water filter plate (23) is made of metal; the other end of the power rod (54) penetrates into the basic shell (3); the driving rod (51) is rotatably connected to the basic shell (3) along its own axis, and the driving rod (51) is coaxially connected to the driving gear (53); the power rod (54) is provided with translation teeth (541) along its length, and the translation teeth (541) are meshed with the driving gear (53).

7. The sponge-type river bank slope top according to claim 6, characterized in that: The driving rod (51) is provided with an operating block (52), the operating block (52) passes through the outer wall of the basic shell (3) to the outside, and a hexagonal groove (523) is formed on the surface of the operating block (52); The operating block (52) is provided with a control hole (521) along the axis, and one end of the driving rod (51) penetrates into the control hole (521); the inner wall of the operating block (52) is provided with a limited rotation groove (522) along the length direction, and the driving rod (51) is provided with a limited rotation block (511) capable of sliding in the limited rotation groove (522); the operating block (52) is threadedly matched with the basic shell (3).

8. The sponge-type river bank slope top according to claim 7, characterized in that: The synchronization component (6) comprises a synchronization connection seat (61) and a synchronization rod (62); at least two synchronization connection seats (61) are arranged on the inner wall of the primary water filter plate (22), and the synchronization rod (62) passes through a plurality of the synchronization connection seats (61); at least two synchronization connection seats (61) and one synchronization rod (62) are also arranged on the inner wall of the auxiliary water filter plate (42); a combination slot (621) is provided at the end of the synchronization rod (62); a combination end column (63) is interference-fitted in the combination slot (621), and the combination end column (63) can pass through the combination slot (621) to an adjacent combination slot (621).

9. The sponge-type river bank slope top according to claim 8, characterized in that: The water filter module (7) comprises a water filter cylinder (71) and a filter body (75); the water filter cylinder (71) is rotatably connected to the base shell (3), and the filter body (75) is arranged in the water filter cylinder (71); The outer wall of the water filter cylinder (71) is provided with rotating teeth (714) in the circumferential direction, and the driving rod (51) is provided with a linkage gear (55) coaxially therewith, and the linkage gear (55) and the rotating teeth (714) are driven by a toothed synchronous belt (551); The drainage pipe (26) comprises a connecting section (261) and a lower drainage section (262); one end of the connecting section (261) is connected to the interior of the water filter cylinder (71), and the other end is connected to the main drainage groove (21); one end of the lower drainage section (262) is connected to the water filter cylinder (71), and the other end is connected to the water storage module (12); The first-level water filter plate (22) and the auxiliary water filter plate (42) are both provided with a plurality of backwash holes (811) at one end away from the slope top pavement (11); the first-level water filter plate (22) is provided with a main water passage (82) connected to the plurality of backwash holes (811) thereon; the auxiliary water filter plate (42) is provided with a connecting water passage (83) connected to the plurality of backwash holes (811) thereon, and the main water passage (82) and the connecting water passage (83) are connected; the water intake module (15) is connected to the main water passage (82) via a backwash pipe (84); and the backwash pipe (84) is connected to the water filter cylinder (71).

10. The sponge-type river bank slope top according to claim 9, characterized in that: A cylindrical rotating seat (33) is provided at the bottom of the base shell (3), and the water filter cylinder (71) is coaxially rotatably connected to the cylindrical rotating seat (33); the water filter cylinder (71) is arranged parallel to the driving rod (51); The inner wall of the cylindrical rotating seat (33) is provided with a first interface (331), a second interface (332), a third interface (333) and a fourth interface (334) in sequence; a partition (72) is provided in the water filter cylinder (71) in a direction perpendicular to the rotating axis (223); the partition (72) divides the water filter cylinder (71) into an upper filter chamber (711) and a lower water outlet chamber (712); a plurality of water-permeable grooves (721) are provided in an array on the partition (72); the filter body (75) is filled in the upper filter chamber (711); and a water-drawing groove (751) is provided on the filter body (75) along the central axis; A water inlet pipe (73) is provided in the water filter cylinder (71); one end of the water inlet pipe (73) passes through the outer wall of the water filter cylinder (71) to communicate with the outside, and the other end starts from the lower water outlet chamber (712), bends, passes through the partition plate (72) along the axis of the water filter cylinder (71) to the water drawing trough (751); a liquid outlet (713) is provided through the side wall of the lower water outlet chamber (712); The water inlet pipe (73) can rotate with the water filter cylinder (71) to communicate with the first interface (331) and the connecting section (261). At this time, the liquid outlet (713), the second interface (332) and the lower discharge section (262) are connected; The backwash pipe (84) comprises a water delivery section (841) and a flushing section (842); the water delivery section (841) is connected to the water intake module (15) and the cylindrical rotating seat (33); the flushing section (842) is connected to the main water passage (82) and the cylindrical rotating seat (33); after the basic rotating cylinder is able to rotate, the water delivery section (841), the third interface (333) and the water inlet pipe (73) are connected, and at this time, the flushing section (842), the fourth interface (334) and the liquid outlet (713) are connected.

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