Sponge city infiltration and drainage structure

Abstract

The application belongs to the technical field of sponge city, and discloses a sponge city seepage and drainage structure, which comprises an outer ring pipe sleeve, a filtering disc with an upward protrusion in the shape of a circular arc and a blockage cleaning assembly, the inner wall of the outer ring pipe sleeve is fixed with an extensible bellows, the bottom of the extensible bellows is fixedly connected with an inner lifting pipe, a plurality of drainage openings are formed in the bottom end of the inner lifting pipe, the filtering disc is fixedly connected to the inner wall bottom of the inner lifting pipe, a plurality of filtering holes are formed in the top surface of the filtering disc, the blockage cleaning assembly comprises a plurality of rotatable movable beads, and the outer wall of each movable bead is fixedly connected with a movable rod. In the application, when the filtering disc moves downward due to blockage, the movable beads drive the movable rods to adaptively adjust the angle, the blockage cleaning disc slides into the flow guide pipe along the guide plate, the blockage in the filtering hole is pushed to the top surface of the filtering disc, the drainage openings are moved to the outer drainage opening to drain water, the impurities on the top of the filtering disc are washed out, the winding impurities in the filtering hole are automatically removed, and the filtering disc is prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The application relates to the field of sponge cities, and more particularly to a sponge city seepage and drainage structure. BACKGROUND

[0002] A sponge city is a new generation of urban rainwater management concept, refers to a city that has good "elasticity" in adapting to environmental changes and coping with natural disasters caused by rainwater and the like, and can drain accumulated water in the city through seepage and drainage structures arranged in the city. In sponge city construction, the seepage and drainage structure is a core facility for realizing rainwater seepage, storage and drainage, and the drainage efficiency and self-cleaning ability of the seepage and drainage structure directly affect the urban waterlogging prevention effect.

[0003] In the prior art, a common seepage and drainage pipeline is usually designed with a fixed filter layer, and a filter screen or a filter disc is used to block impurities such as mud and fallen leaves from entering the pipeline. However, the filter structure has certain limitations. For example, the filter holes are easily blocked by impurities such as fallen leaves and fibrous materials. Especially in the early stage of the rainy season, a large amount of fallen leaves and fibrous materials carried by surface runoff will quickly block the filter layer, and under the scouring of rainwater, the impurities will be embedded in the filter holes, resulting in a sharp decrease in the drainage capacity. Therefore, it is necessary to manually clean the impurities embedded in the filter holes, and the cleaning cannot be automatically realized. Therefore, we propose a sponge city seepage and drainage structure. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a sponge city seepage and drainage structure. The clear block disc slides into the flow guide pipe along the guide plate, pushes the blockage in the filter hole to the top surface of the filter disc, moves the drainage opening to the external drainage opening for drainage, and washes out the impurities on the top of the filter disc, thereby automatically removing the entangled impurities in the filter hole and avoiding blockage of the filter disc.

[0005] A sponge city seepage and drainage structure, comprising an outer ring pipe sleeve, a filter disc upwardly protruding in a circular arc shape, and a clear block assembly.

[0006] The inner wall of the outer ring pipe sleeve is fixedly connected with an extension bellows, the bottom of the extension bellows is fixedly connected with an inner lifting pipe, and the bottom end of the inner lifting pipe is provided with a plurality of drainage openings.

[0007] The filter disc is fixedly connected to the inner wall bottom of the inner lifting pipe, and the top surface of the filter disc is provided with a plurality of filter holes.

[0008] The clogging clearing assembly comprises a plurality of rotatable movable beads, outer walls of the movable beads are fixedly connected with movable rods, end portions of the movable rods are fixedly connected with clogging clearing discs, inner walls of the filter holes are fixedly connected with flow guide pipes, bottom portions of the flow guide pipes extend outward to form expansion pipes, inner walls of the expansion pipes are fixedly connected with two guide plates, the clogging clearing discs are slidably connected with the guide plates, top portions of the clogging clearing discs are provided with first curved surfaces, top portions of the flow guide pipes are provided with second curved surfaces.

[0009] When the filter disc is blocked and moves downward, the movable beads drive the movable rods to adapt to the angle change of the flow guide pipes, so that the clogging clearing discs slide into the flow guide pipes along the guide plates to push the blockage to the top surface of the filter disc, and the first curved surfaces and the second curved surfaces are combined to form a continuous smooth curved surface.

[0010] Preferably, the outer ring pipe sleeve inner wall is fixedly connected with a plurality of guide rods, the guide rod outer wall is provided with a friction surface, the guide rod outer wall is sleeved with a second spring, the guide rod inner wall is provided with two slide rods, both ends of the slide rod are fixedly connected with a support block, the support block is fixedly connected to the guide rod inner wall, the slide rod outer wall is sleeved with a first spring, the guide rod inner wall is provided with a blocking plate, both ends of the blocking plate are slidably connected with the slide rod.

[0011] The inner lifting pipe inner wall is fixedly connected with a pressing ring, the pressing ring is sleeved on the guide rod outer wall and selectively abuts against the blocking plate.

[0012] Preferably, one end of the second spring is fixedly connected with the pressing ring, the other end of the second spring is fixedly connected with the outer ring pipe sleeve inner wall, and both ends of the first spring are fixedly connected with the blocking plate.

[0013] Preferably, the inner lifting pipe outer wall is fixedly connected with a first sealing ring, and the first sealing ring is sealingly and slidably connected with the outer ring pipe sleeve inner wall.

[0014] Preferably, the outer ring pipe sleeve inner wall is slidably connected with an inner sleeve pipe, the inner sleeve pipe outer wall is fixedly connected with a second sealing ring, the second sealing ring is sealingly and slidably connected with the outer ring pipe sleeve inner wall, and the inner sleeve pipe top portion is fixedly connected with the filter disc.

[0015] Preferably, the outer ring pipe sleeve inner wall is slidably connected with an inner sleeve pipe, the inner sleeve pipe outer wall is fixedly connected with a second sealing ring, the second sealing ring is sealingly and slidably connected with the outer ring pipe sleeve inner wall, and the inner sleeve pipe top portion is fixedly connected with the filter disc.

[0016] Preferably, the filter disc outer peripheral wall is provided with a plurality of grooves, the filter disc top portion is fixedly connected with a plurality of elastic sheets in an annular array structure, the elastic sheet outer wall is provided with a curved groove, and the elastic sheet bottom end extends into the groove.

[0017] The outer ring sleeve inner wall is fixedly connected with a plurality of blocking blocks, and the blocking blocks are located below the grooves and selectively contact the elastic sheets.

[0018] Preferably, when the filter disc moves downward, the blocking blocks press the bottom ends of the elastic sheets through the grooves, so that the elastic sheets are bent upward along the curved grooves to form a separation gap between the impurities and the top surface of the filter disc.

[0019] Preferably, after the pressing ring moves downward and passes through the blocking plate, the pressing ring is in sliding contact with the friction surface, so that the friction resistance inhibits the rapid rebound of the second spring, and the drainage port is slowly separated from the external discharge port.

[0020] Preferably, the extension direction of the guide plate is parallel to the axis of the flow guide pipe, so that the clearing disc slides into the flow guide pipe along the path, and the side wall of the clearing disc is in surface contact with the guide plate.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] When the filter disc moves downward due to blockage, the movable bead drives the movable rod to adaptively adjust the angle, so that the clearing disc slides into the flow guide pipe along the guide plate, the blockage in the filter hole is pushed to the top surface of the filter disc, the drainage port moves to the external discharge port to drain water, the impurities on the top of the filter disc are flushed out, the entangled impurities in the filter hole are automatically removed, and the filter disc is prevented from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0025] Figure 2 It is a schematic diagram of the internal mounting structure of the outer ring sleeve of the present application;

[0026] Figure 3 It is a schematic diagram of the mounting structure of the filter disc of the present application;

[0027] Figure 4 It is a schematic diagram of the overall structure of the filter disc of the present application;

[0028] Figure 5 It is a schematic diagram of the mounting structure of the support sleeve of the present application;

[0029] Figure 6 It is a schematic diagram of the mounting structure of the clearing disc of the present application;

[0030] Figure 7 This is a schematic diagram of the mounting structure of the pressure ring of the present invention;

[0031] Figure 8 This is a schematic diagram of the installation structure of the blocking plate of the present invention;

[0032] Figure 9 This is a schematic diagram of the installation structure of the blocking block of the present invention;

[0033] Figure 10 This is a schematic diagram of the mounting structure of the spring clip of the present invention;

[0034] Figure 11 This is a schematic diagram of the installation structure of the active tube of the present invention;

[0035] Figure 12 This is a schematic diagram of the mounting structure of the slider of the present invention.

[0036] The following are the labeling symbols in the diagram: 1. Outer ring sleeve; 2. Telescopic corrugated pipe; 3. Inner rising pipe; 4. Drain outlet; 5. Inner sleeve; 6. First sealing ring; 7. Second sealing ring; 8. Outer outlet; 9. Filter disc; 10. Filter hole; 11. Groove; 12. Support sleeve; 13. Support rod; 14. Movable ball; 15. Movable rod; 16. Unblocking disc; 161. First curved surface; 17. Guide pipe; 18. Second curved surface; 19. Expanding pipe; 20. Guide plate; 21. Guide rod; 211. Friction surface; 22. Support block; 23. Slide rod; 24. First spring; 25. Blocking plate; 26. Pressure ring; 27. Second spring; 28. Blocking block; 29. ​​Spring piece; 30. Bending groove; 31. Positioning rod; 32. Third spring; 33. Slider; 34. Movable pipe; 35. Third sealing ring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] like Figures 1-6 As shown, a sponge city infiltration and drainage structure includes an outer ring pipe sleeve 1, an upwardly protruding arc-shaped filter disc 9, and a blockage removal component;

[0039] An external drain port 8 is provided on the inner wall of the outer ring sleeve 1. A telescopic corrugated pipe 2 is fixed on the inner wall of the outer ring sleeve 1. An inner lifting pipe 3 is fixedly connected to the bottom of the telescopic corrugated pipe 2. Multiple drain ports 4 are provided at the bottom of the inner lifting pipe 3.

[0040] The telescopic corrugated pipe 2 allows for vertical displacement of the inner rising pipe 3, and the outer ring sleeve 1 can be buried deep underground.

[0041] The filter disc 9 is fixedly connected to the bottom of the inner wall of the inner lifting pipe 3, and multiple filter holes 10 are opened on the top surface of the filter disc 9.

[0042] The unblocking assembly includes multiple rotatable movable beads 14, each movable bead 14 has a movable rod 15 fixedly connected to its outer wall, an unblocking disc 16 fixedly connected to the end of each movable rod 15, a guide tube 17 fixedly connected to the inner wall of each filter hole 10, an expansion tube 19 extending outward from the bottom of the guide tube 17, two guide plates 20 fixedly connected to the inner wall of the expansion tube 19, the unblocking disc 16 is slidably connected to the guide plates 20, a first curved surface 161 is formed on the top of the unblocking disc 16, and a second curved surface 18 is formed on the top of the guide tube 17;

[0043] When the filter disc 9 is blocked and moves downward, the movable ball 14 drives the movable rod 15 to adapt to the angle change of the guide tube 17, so that the unblocking disc 16 slides into the guide tube 17 along the guide plate 20 and pushes the blockage to the top surface of the filter disc 9. At the same time, the first curved surface 161 and the second curved surface 18 combine to form a continuous and smooth arc surface, and the drain port 4 moves to the external drain port 8 to drain water.

[0044] The movable bead 14, movable rod 15 and cleaning disc 16 of the unclogging component automatically clean the blockage in the guide pipe 17 when the filter disc 9 is blocked and moves downward, which solves the problem that the traditional fixed filter layer is easily blocked by fallen leaves and fiber impurities.

[0045] The first curved surface 161 and the second curved surface 18 form a smooth arc surface, which reduces the adhesion of impurities and, together with rainwater flushing, improves the clearing effect and ensures the continuous operation of the infiltration and drainage system.

[0046] The continuous smooth arc surface formed by the combination of the arc-shaped protrusions of the filter disc 9, the first curved surface 161, and the second curved surface 18 can form a flow guiding and acceleration channel. Rainwater generates wall-adhesive flow on the arc surface, which increases the flow rate and enhances the peeling force on surface impurities. At the same time, it reduces the low-pressure area on the arc surface and avoids impurity adsorption.

[0047] like Figure 7 and Figure 8 As shown, multiple guide rods 21 are fixedly connected to the inner wall of the outer ring sleeve 1. The outer wall of the guide rod 21 is provided with a friction surface 211. A second spring 27 is sleeved on the outer wall of each guide rod 21. Two sliding rods 23 are provided inside the guide rod 21. Support blocks 22 are fixedly connected to both ends of each sliding rod 23. Support blocks 22 are fixedly connected to the inner wall of the guide rod 21. A first spring 24 is sleeved on the outer wall of each sliding rod 23. A blocking plate 25 is provided inside each guide rod 21. The two ends of the blocking plate 25 are slidably connected to the sliding rod 23 respectively.

[0048] A pressure ring 26 is fixedly connected to the inner wall of the inner rising pipe 3. The pressure ring 26 is sleeved on the outer wall of the guide rod 21 and selectively abuts against the baffle plate 25.

[0049] One end of the second spring 27 is fixedly connected to the pressure ring 26, and the other end of the second spring 27 is fixedly connected to the inner wall of the outer ring sleeve 1. Both ends of the first spring 24 are fixedly connected to the blocking plate 25 respectively.

[0050] The guide rod 21 and the second spring 27 guide the inner lifting tube 3 to rise and fall smoothly. The baffle plate 25 and the first spring 24 form a "power storage-release" mechanism, which makes the inner lifting tube 3 move down quickly when it is blocked to a certain extent, which enhances the impact of the unblocking action and quickly moves the drain outlet 4 to the outer drain outlet 8, instantly releasing the accumulated water and enhancing the flushing effect on impurities.

[0051] The friction surface 211 controls the reset speed of the pressure ring 26, preventing it from shaking up and down repeatedly under the elastic force of the second spring 27, which would cause the drain outlet 4 and the outer outlet 8 to repeatedly misalign, resulting in poor drainage and affecting the flushing effect on impurities. Under the pulling force of the second spring 27, the pressure ring 26 rises slowly, which allows enough time for drainage to be completed and impurities to be discharged.

[0052] like Figure 3 As shown, a first sealing ring 6 is fixedly connected to the outer wall of the inner rising pipe 3, and the first sealing ring 6 is slidably connected to the inner wall of the outer ring sleeve 1.

[0053] The first sealing ring 6 enables the inner rising pipe 3 and the outer ring sleeve 1 to slide in a sealed manner, preventing unfiltered water from seeping into the drain outlet 4 through the gap, ensuring the filtration effect, and preventing impurities from entering the pipeline around the filter layer.

[0054] like Figure 3 As shown, an inner sleeve 5 is slidably connected to the inner wall of the outer ring sleeve 1, and a second sealing ring 7 is fixedly connected to the outer wall of the inner sleeve 5. The second sealing ring 7 is slidably connected to the inner wall of the outer ring sleeve 1, and the top of the inner sleeve 5 is fixedly connected to the filter disc 9.

[0055] The inner sleeve 5 and the second sealing ring 7 further enhance the sealing performance and move synchronously with the filter disc 9 to ensure that the filtered water is discharged only through the drain port 4, while providing stable support for the filter disc 9 and improving the overall structure.

[0056] like Figure 5 and Figure 6 As shown, a support sleeve 12 is provided inside the outer ring sleeve 1. The top of the support sleeve 12 protrudes upward to form an arc-shaped structure. The movable bead 14 is embedded in the top surface of the support sleeve 12. Multiple support rods 13 are fixedly connected to the outer wall of the support sleeve 12. The ends of the support rods 13 are fixedly connected to the inner wall of the outer ring sleeve 1.

[0057] The arc-shaped structure of the support sleeve 12 is adapted to the rotation requirements of the movable ball 14. The support rod 13 fixes the position of the support sleeve 12, ensuring that the movable ball 14 can flexibly adjust its angle during the unblocking process, and ensuring that the unblocking disc 16 enters the guide pipe 17.

[0058] like Figure 9 and Figure 10 As shown, the outer peripheral wall of the filter disc 9 has multiple grooves 11, and the top of the filter disc 9 is fixedly connected with multiple spring pieces 29 in a ring array structure. The outer wall of the spring piece 29 has a bending groove 30, and the bottom end of the spring piece 29 extends into the groove 11.

[0059] Multiple blocking blocks 28 are fixedly connected to the inner wall of the outer ring sleeve 1. The blocking blocks 28 are located below the groove 11 and selectively contact the spring piece 29.

[0060] The spring 29 and the blocking block 28 work together to lift up the thin sheet-like impurities on the surface when the filter disc 9 moves down, forming a separation gap that is easy for rainwater to wash away.

[0061] The groove 11 provides clearance for the blocking block 28.

[0062] The cleaning disc 16 cleans the fiber entanglement inside the guide pipe 17, pushing out the mud and fiber entanglement inside the guide pipe 17 for cleaning; the spring 29 lifts up the thin sheet-like impurities on the surface of the filter disc 9 and washes them with water; the smooth arc surface formed by the cleaning disc 16, the first curved surface 161 and the second curved surface 18 is designed to target adhesive sludge and reduce the contact area.

[0063] like Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, when the filter disc 9 moves downward, the blocking block 28 presses against the bottom end of the spring piece 29 through the groove 11, causing the spring piece 29 to bend upward along the bending groove 30, forming a separation gap between the impurities and the top surface of the filter disc 9.

[0064] After the pressure ring 26 moves down through the baffle plate 25, it slides into contact with the friction surface 211. The frictional resistance suppresses the rapid rebound of the second spring 27, causing the drain outlet 4 to slowly separate from the external discharge outlet 8.

[0065] The extension direction of the guide plate 20 is parallel to the axis of the guide tube 17, so that the unblocking disc 16 slides into the guide tube 17 along the path, and the side wall of the unblocking disc 16 forms a surface contact sliding with the guide plate 20.

[0066] The relationship between the bending action of the spring 29 and the separation of impurities is clearly defined. The bending groove 30 controls the deformation direction of the spring, and the thin-flake impurities such as fallen leaves are removed in a targeted manner to make up for the blind spot of the cleaning plate 16 in cleaning the surface-attached impurities.

[0067] The sliding contact between the pressure ring 26 and the friction surface 211 inhibits rapid rebound, prolongs the docking time between the drain outlet 4 and the external outlet 8, ensures that the blockage is fully discharged, and avoids the re-blockage caused by impurities due to excessively fast reset.

[0068] The guide plate 20 ensures that the unblocking disc 16 slides into the guide pipe 17 in a straight line. The surface contact sliding improves the guiding accuracy, ensuring that the unblocking disc 16 accurately pushes out the blockage, while also enhancing the stability of the unblocking process.

[0069] In some embodiments, such as Figure 11 and Figure 12 As shown, a movable tube 34 is also sleeved inside the guide tube 17. The top of the movable tube 34 is curved and can be combined with the first curved surface 161 and the second curved surface 18 to form a continuous smooth arc surface. Two sliders 33 are fixed on the outer wall of the movable tube 34. A positioning rod 31 is fixed in the groove of the inner wall of the guide tube 17. A third spring 32 is sleeved on the outer wall of the positioning rod 31. A third sealing ring 35 is fixedly connected to the outer wall of the unblocking disc 16. The outer ring of the third sealing ring 35 has multiple edges distributed along the circumference. The sliders 33 are slidably sleeved on the positioning rod 31. The two ends of the third spring 32 are fixed to the guide tube 17 and the sliders 33 respectively.

[0070] When the inner lifting pipe 3 descends, the unblocking disc 16 moves upward relative to it. The third sealing ring 35 on the outer wall slides upward along the guide plate 20. The elastic third sealing ring 35 is squeezed inward and contracts elastically, sliding into the movable pipe 34. The outer peripheral wall of the unblocking disc 16 slides upward along the inner wall of the movable pipe 34.

[0071] When the unblocking disc 16 descends, the third sealing ring 35 is pressed into the movable tube 34 under the action of elasticity, causing the movable tube 34 to slide downward. The movable tube 34 drives the slider 33 to move and compress the third spring 32. When the slider 33 moves to the lower end of the groove, the edge of the outer wall of the third sealing ring 35 rubs against the inner wall of the movable tube 34 until the unblocking disc 16 disengages from the movable tube 34. At this time, under the action of the third spring 32, the slider 33 moves to the top of the groove, realizing the reset of the movable tube 34, thereby cleaning the microorganisms and impurities attached to the inner wall of the pipe.

[0072] Working principle: Rainwater flows into the inner riser pipe 3 and is filtered by the filter disc 9. As the filter disc 9 gradually becomes clogged, the water level in the inner riser pipe 3 gradually rises. Under the action of gravity, the filter disc 9 drives the inner riser pipe 3 to slide downwards along the inner wall of the outer ring sleeve 1. The telescopic corrugated pipe 2 stretches to adapt to the moving distance of the inner riser pipe 3. When the inner riser pipe 3 slides downwards, it drives the pressure ring 26 to move downwards, causing the second spring 27 to be stretched. The downward movement of the pressure ring 26 is blocked by the baffle plate 25. At this time, the filter disc 9 cannot descend, and the water level in the inner riser pipe 3, which is clogged, continues to rise. The rapid release of the inner riser pipe 3 provides power. When the inner riser pipe 3 reaches a certain weight due to the water level, it drives the pressure ring 26 to quickly pass through the baffle plate 25 and move below it. At this time, the drain outlet 4 moves to the outer drain outlet 8. When the inner riser pipe 3 drives the filter disc 9 to move downward, the filter disc 9 drives the guide pipe 17 to move. The movable bead 14 drives the movable rod 15 to adjust according to the angle and position changes of the guide pipe 17. The unblocking disc 16 slides upward along the guide plate 20 into the guide pipe 17. The movement of the unblocking disc 16 can push the blockage in the guide pipe 17 away. As the filter disk 9 moves downwards, the first curved surface 161 moves upwards and combines with the second curved surface 18, forming a smooth arc-shaped structure on the top surface of the filter disk 9. This reduces the adhesion of impurities to the top surface of the filter disk 9, facilitating rapid rainwater discharge and flushing away clogged impurities. When the filter disk 9 moves downwards, it drives the spring piece 29 to move. The blocking block 28 blocks the end of the spring piece 29 through the groove 11, causing the spring piece 29 to bend upwards along the curved groove 30, lifting the thin sheet-like impurities attached to the top surface of the filter disk 9 and creating a gap between the thin sheet-like impurities and the filter disk 9. This allows rainwater to enter and wash away the thin, flaky impurities. The pressure ring 26, which moves to the bottom of the baffle plate 25, will instantly slide to the friction surface 211. The friction surface 211 prevents the pressure ring 26 from rebounding rapidly under the tension of the second spring 27. Under the tension of the second spring 27, the pressure ring 26 slowly slides upward, controlling the connection time between the drain outlet 4 and the external outlet 8, thus clearing the blockage. During the process of clearing the blockage, the water level in the inner riser pipe 3 drops. Under the tension of the second spring 27, the inner riser pipe 3 moves upward to reset, thus performing filtration again.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge city infiltration and drainage structure, characterized in that, include: Outer ring sleeve (1), the inner wall of the outer ring sleeve (1) is provided with an external drain port (8), the inner wall of the outer ring sleeve (1) is fixed with a telescopic corrugated pipe (2), the bottom of the telescopic corrugated pipe (2) is fixedly connected with an inner lifting pipe (3), and the bottom end of the inner lifting pipe (3) is provided with multiple drain ports (4). A filter disc (9) protrudes upward in an arc shape. The filter disc (9) is fixedly connected to the bottom of the inner wall of the inner lifting pipe (3). Multiple filter holes (10) are opened on the top surface of the filter disc (9). The unblocking assembly includes multiple rotatable movable beads (14), each movable bead (14) has a movable rod (15) fixedly connected to its outer wall, an unblocking disc (16) fixedly connected to the end of each movable rod (15), a guide tube (17) fixedly connected to the inner wall of each filter hole (10), an expansion tube (19) extending outward from the bottom of the guide tube (17), two guide plates (20) fixedly connected to the inner wall of the expansion tube (19), the unblocking disc (16) and the guide plate (20) being slidably connected, a first curved surface (161) being opened on the top of the unblocking disc (16), and a second curved surface (18) being opened on the top of the guide tube (17). When the filter disc (9) is blocked and moves downward, the movable ball (14) drives the movable rod (15) to adapt to the angle change of the guide tube (17), so that the unblocking disc (16) slides into the guide tube (17) along the guide plate (20) and pushes the blockage to the top surface of the filter disc (9). At the same time, the first curved surface (161) and the second curved surface (18) combine to form a continuous smooth arc surface, and the drain outlet (4) moves to the external drain outlet (8) to drain water.

2. The sponge city infiltration and drainage structure according to claim 1, characterized in that: Multiple guide rods (21) are fixedly connected to the inner wall of the outer ring sleeve (1). The outer wall of the guide rod (21) is provided with a friction surface (211). The outer wall of the guide rod (21) is provided with a second spring (27). Two sliding rods (23) are provided inside the guide rod (21). Support blocks (22) are fixedly connected to both ends of the sliding rod (23). The support blocks (22) are fixedly connected to the inner wall of the guide rod (21). The outer wall of the sliding rod (23) is provided with a first spring (24). A blocking plate (25) is provided inside the guide rod (21). The two ends of the blocking plate (25) are slidably connected to the sliding rod (23). The inner wall of the inner lifting tube (3) is fixedly connected to a pressure ring (26), which is sleeved on the outer wall of the guide rod (21) and selectively abuts against the baffle plate (25).

3. The sponge city infiltration and drainage structure according to claim 2, characterized in that: One end of the second spring (27) is fixedly connected to the pressure ring (26), and the other end of the second spring (27) is fixedly connected to the inner wall of the outer ring sleeve (1). Both ends of the first spring (24) are fixedly connected to the blocking plate (25).

4. The sponge city infiltration and drainage structure according to claim 2, characterized in that: The outer wall of the inner rising pipe (3) is fixedly connected with a first sealing ring (6), and the first sealing ring (6) is slidably connected to the inner wall of the outer ring sleeve (1).

5. The sponge city infiltration and drainage structure according to claim 2, characterized in that: The inner wall of the outer ring sleeve (1) is slidably connected to the inner sleeve (5), and the outer wall of the inner sleeve (5) is fixedly connected to the second sealing ring (7). The second sealing ring (7) is slidably connected to the inner wall of the outer ring sleeve (1), and the top of the inner sleeve (5) is fixedly connected to the filter disc (9).

6. The sponge city infiltration and drainage structure according to claim 1, characterized in that: The outer ring sleeve (1) is provided with a support sleeve (12). The top of the support sleeve (12) protrudes upward to form an arc structure. The movable bead (14) is embedded in the top surface of the support sleeve (12). Multiple support rods (13) are fixedly connected to the outer wall of the support sleeve (12). The ends of the support rods (13) are fixedly connected to the inner wall of the outer ring sleeve (1).

7. The sponge city infiltration and drainage structure according to claim 1, characterized in that: The filter disc (9) has multiple grooves (11) on its outer peripheral wall. The top of the filter disc (9) is fixedly connected with multiple spring pieces (29) in a ring array structure. The outer wall of the spring piece (29) has a curved groove (30). The bottom end of the spring piece (29) extends into the groove (11). The inner wall of the outer ring sleeve (1) is fixedly connected with a plurality of blocking blocks (28), which are located below the groove (11) and selectively contact the spring piece (29).

8. The sponge city infiltration and drainage structure according to claim 7, characterized in that: When the filter disc (9) moves down, the blocking block (28) presses against the bottom end of the spring piece (29) through the groove (11), causing the spring piece (29) to bend upward along the curved groove (30), forming a separation gap between the impurities and the top surface of the filter disc (9).

9. The sponge city infiltration and drainage structure according to claim 2, characterized in that: After the pressure ring (26) moves down through the baffle plate (25), it slides into contact with the friction surface (211). The frictional resistance suppresses the rapid rebound of the second spring (27), causing the drain outlet (4) to slowly separate from the external outlet (8).

10. The sponge city infiltration and drainage structure according to claim 1, characterized in that: The extension direction of the guide plate (20) is parallel to the axis of the guide pipe (17), so that the unblocking disc (16) slides into the guide pipe (17) along the path, and the side wall of the unblocking disc (16) and the guide plate (20) form a surface contact sliding.

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