Sponge city drainage system with water storage and feedback effects

Abstract

The utility model discloses a sponge city drainage system with water storage and feedback effects. The sponge city drainage system comprises a soil roadbed, a water storage and feedback mechanism and a spraying device. Wherein an urban road and a green belt are respectively arranged on the soil roadbed. A rainwater guiding and filtering mechanism is arranged at the junction of the urban road and the green belt. The top of the rainwater guiding and filtering mechanism is higher than the tops of urban roads and green belts. According to the sponge city drainage system with the water storage and feedback effects, the rainwater guiding and filtering mechanism is arranged at the joint of the city road and the green belt, the water storage and feedback mechanism is pre-buried in the soil roadbed to be communicated with the rainwater guiding and filtering mechanism, and rainwater is drained through the rainwater guiding and filtering mechanism in advance; when the amount of rainwater is too large, the rainwater flows into the water storage and feedback mechanism through the rainwater guiding and filtering mechanism to be collected, water collected in the water storage and feedback mechanism is pumped through a water pump to irrigate a green belt, and the effects of urban drainage, water storage and feedback irrigation are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sponge city technology, and in particular to a sponge city drainage system with water storage and feedback effects. Background Technology

[0002] Sponge city is a new generation of urban stormwater management concept. It refers to a city that can be as resilient as a sponge in adapting to environmental changes and coping with natural disasters caused by rainwater. It can also be called a "water-resilient city".

[0003] Cities can act like sponges, exhibiting good "elasticity" in adapting to environmental changes and responding to natural disasters. The internationally accepted term is "low-impact development stormwater system construction." When it rains, the system absorbs, stores, infiltrates, and purifies water, and when needed, it releases and utilizes the stored water, enabling rainwater to migrate freely within the city.

[0004] Chinese Patent Publication No. CN 216920637 U discloses a utility model patent entitled "Drainage Structure for Sponge Cities," which includes a drainage mechanism. The inner wall of the drainage mechanism is provided with a crushing mechanism. The crushing mechanism includes a rotating rod, a cleaning brush fixedly connected to the outer wall of the rotating rod, a crushing rod fixedly connected to the outer wall of the rotating rod, and a motor fixedly connected to the right side of the rotating rod. The outer wall of the drainage mechanism is fixedly connected to a foundation. The drainage mechanism includes a drainage body, an infiltrator fixedly connected to the inside of the drainage body, and a mesh plate fixedly connected to the inside of the drainage body. The inner wall of the drainage body and the rotating rod are movably connected. The foundation and the motor are fixedly connected. The end of the cleaning brush away from the rotating rod is movably connected to the mesh plate.

[0005] This sponge city drainage structure uses an electric motor on a shredding mechanism to drive a cleaning rod and a shredding rod on a rotating rod to rotate. The cleaning rod and the shredding rod shred and clean the garbage on the mesh plate, preventing blockages and improving drainage efficiency.

[0006] However, the above-mentioned existing technologies have the following problems when used: they do not collect and reuse rainwater, resulting in a waste of water resources.

[0007] To address the aforementioned issues, this application proposes a sponge city drainage system with water storage and feedback functions for the recycling and reuse of rainwater. Utility Model Content

[0008] Therefore, it is necessary to provide a sponge city drainage system with water storage and feedback effects to address the above-mentioned technical problems, which would have beneficial effects.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A sponge city drainage system with water storage and feedback effects is applied to urban drainage systems.

[0011] The sponge city drainage system with water storage and feedback effects specifically includes:

[0012] The soil roadbed is provided with urban roads and green belts respectively;

[0013] A rainwater guiding and filtering mechanism is installed at the intersection of the urban road and the green belt. The top of the rainwater guiding and filtering mechanism is higher than the top of the urban road and the green belt. The rainwater guiding and filtering mechanism can be used for guiding and filtering rainwater.

[0014] The water storage and feedback mechanism is deeply buried in the soil roadbed. The soil roadbed is fluidly connected to the rainwater guiding and filtering mechanism, so that water that cannot be discharged in time in the rainwater guiding and filtering mechanism is guided to the water storage and feedback mechanism for storage. The water storage and feedback mechanism is equipped with a water pump. When the water pump is working, it can drive the water in the water storage and feedback mechanism to be discharged outward.

[0015] A sprinkler system is installed in the green belt and is connected to a water storage and feedback mechanism. Under the action of a water pump, the sprinkler system can irrigate the green belt.

[0016] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the rainwater guiding and filtering mechanism includes a road dividing block, and a drainage ditch is provided in the middle of the road dividing block.

[0017] The top of the drainage ditch and the top of the side facing the city road are provided with gaps, and the bottom of the gaps on the side of the drainage ditch is lower than the top of the city road.

[0018] The top of the road divider is covered with a rainwater filter, which seals the gaps in the drainage ditch and allows rainwater to enter the interior of the drainage ditch and be discharged along the drainage ditch, while debris is blocked outside the rainwater filter.

[0019] A water pipe is installed on the side of the drainage ditch facing the green belt.

[0020] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the connection height between the water inlet pipe and the drainage ditch is located at half the height of the drainage ditch, and the other end of the water inlet pipe extends downward to connect to the upper part of the side of the water storage and feedback mechanism.

[0021] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the rainwater filtration section includes a closed cover, a water-proof chamber is provided in the middle of the closed cover, an inlet is provided on the side of the water-proof chamber facing the urban road, and a filter screen is provided between the inlets.

[0022] The water-proof chamber has an outlet on the side away from the inlet, and the outlet is located at the top of the water-proof chamber.

[0023] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the filter screen is connected to the water inlet by bolts, and the bottom of the filter screen is flush with the bottom of the water-proof chamber.

[0024] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the outlet is internally hinged with an anti-backflow component that can be flipped along the upper end of the outlet, and the anti-backflow component can seal the outlet.

[0025] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the outlet is provided with a groove on the side facing the road divider block, and the anti-backflow component is limited by the groove and can only be flipped towards the road divider block.

[0026] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, the water storage and feedback mechanism includes a water storage tank, which is pre-buried in the soil subgrade. The top of the water storage tank is flush with the top of the soil subgrade, and the mouth of the water storage tank is sealed with a manhole cover.

[0027] A guide pipe is provided at the bottom of the side of the water storage tank, and the guide pipe extends into the soil subgrade at the bottom of the green belt;

[0028] The water pump is installed inside the water storage tank and connected to the guide pipe.

[0029] As a preferred embodiment of the sponge city drainage system with water storage and feedback effect provided by this utility model, a plurality of spray devices are provided, and each spray device is evenly distributed in the green belt.

[0030] The sprinkler system is also connected to municipal water supply, and a water valve is installed at the connection point between the sprinkler system and the municipal water supply.

[0031] As a preferred embodiment of the sponge city drainage system with water storage and feedback effects provided by this utility model, several water inlet pipes and water storage tanks are distributed along the edge of the city road.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] This utility model provides a sponge city drainage system with water storage and feedback effects. A rainwater guiding and filtering mechanism is installed at the junction of urban roads and green belts. A water storage and feedback mechanism is pre-embedded in the soil subgrade and connected to the rainwater guiding and filtering mechanism. When water accumulates on urban roads, rainwater is pre-discharged through the rainwater guiding and filtering mechanism. When the rainfall is excessive, it flows through the rainwater guiding and filtering mechanism into the water storage and feedback mechanism for collection. When irrigation is needed, a water pump draws water collected in the water storage and feedback mechanism to irrigate the green belt, achieving the effects of urban drainage, water storage, and irrigation feedback. Furthermore, a water-tight compartment is set in the middle of the sealed cover, with inlets and outlets on both sides of the compartment. The inlet is blocked by a filter screen, and the outlet is positioned high. During drainage, the outlet blocks debris, and the water overflows and flows into the drainage ditch, preventing blockages. Rainwater below the outlet is absorbed by the sponge road surface.

[0034] This invention features an anti-backflow component hinged at the outlet and a limit on the rotation direction of the anti-backflow component. During normal drainage, the anti-backflow component flips towards the drainage ditch under the action of the water flow. When the water flow is large and the water pressure in the drainage ditch is greater than the external water pressure, the anti-backflow component closes the outlet under the action of the water pressure, thus preventing water from flowing back into the ditch. Attached Figure Description

[0035] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the structure of the sponge city drainage system with water storage and feedback effects provided by this utility model;

[0037] Figure 2 A front view of the structure of the sponge city drainage system with water storage and feedback effects provided by this utility model;

[0038] Figure 3 A schematic diagram of the rainwater guiding and filtering mechanism provided by this utility model;

[0039] Figure 4 A cross-sectional view of the rainwater guiding and filtering mechanism provided by this utility model;

[0040] Figure 5This is a schematic diagram of the anti-backflow component in this utility model after it has been unfolded.

[0041] The markings in the diagram are explained as follows:

[0042] 1. Urban roads;

[0043] 2. Rainwater guiding and filtering mechanism; 201. Road divider block; 202. Drainage ditch; 203. Rainwater filtering section; 2031. Sealing cover; 2032. Waterproof compartment; 2033. Inlet; 2034. Filter screen; 2035. Outlet; 2036. Backflow prevention component; 204. Water pipe;

[0044] 3. Soil subgrade;

[0045] 4. Green belt;

[0046] 5. Water storage and feedback mechanism; 501. Water storage tank; 502. Diversion pipe;

[0047] 6. Spraying device. Detailed Implementation

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0049] As described in the background section, the lack of rainwater harvesting and reuse results in a waste of water resources.

[0050] To solve this technical problem, this utility model provides a sponge city drainage system with water storage and feedback effects, which is applied to urban drainage systems.

[0051] For details, please refer to Figures 1-2 The sponge city drainage system with water storage and feedback effects specifically includes:

[0052] Soil roadbed 3, on which urban roads 1 and green belts 4 are respectively set;

[0053] A rainwater guiding and filtering mechanism 2 is installed at the junction of urban road 1 and green belt 4. The top of the rainwater guiding and filtering mechanism 2 is higher than the top of urban road 1 and green belt 4. The rainwater guiding and filtering mechanism 2 can be used for guiding and filtering rainwater.

[0054] The water storage and feedback mechanism 5 is deeply buried in the soil subgrade 3. The soil subgrade 3 is fluidly connected to the rainwater guiding and filtering mechanism 2, so that the water that cannot be discharged in time in the rainwater guiding and filtering mechanism 2 is guided to the water storage and feedback mechanism 5 for storage. The water storage and feedback mechanism 5 is equipped with a water pump. When the water pump is working, it can drive the water in the water storage and feedback mechanism 5 to be discharged outward.

[0055] The sprinkler device 6 is installed in the green belt 4 and is connected to the water storage and feedback mechanism 5. Under the action of the water pump, it can irrigate the green belt 4.

[0056] The sponge city drainage system with water storage and feedback effects provided by this utility model is a rainwater guiding and filtering mechanism 2 set at the connection between urban road 1 and green belt 4, and a water storage and feedback mechanism 5 is pre-embedded in the soil subgrade 3 and connected to the rainwater guiding and filtering mechanism 2. When water accumulates on urban road 1, the rainwater is discharged in advance through the rainwater guiding and filtering mechanism 2. When the amount of rainwater is too large, it flows into the interior of the water storage and feedback mechanism 5 through the rainwater guiding and filtering mechanism 2 for collection. When irrigation is needed, the water collected in the water storage and feedback mechanism 5 is pumped by a water pump to irrigate the green belt 4, thus achieving the effects of urban drainage, water storage, and feedback irrigation.

[0057] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0058] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] Example 1

[0061] Please refer to Figures 1-2A sponge city drainage system with water storage and feedback functions is disclosed, comprising a soil subgrade 3, a water storage and feedback mechanism 5, and a sprinkler system 6. Urban roads 1 and green belts 4 are respectively installed on the soil subgrade 3. A rainwater guiding and filtering mechanism 2 is installed at the junction of urban roads 1 and green belts 4. The top of the rainwater guiding and filtering mechanism 2 is higher than the top of urban roads 1 and green belts 4. The rainwater guiding and filtering mechanism 2 can be used as a curb to separate urban roads 1 and green belts 4, eliminating the need for traditional curbs and reducing road construction costs. The rainwater guiding and filtering mechanism 2 can be used for guiding and filtering rainwater. The water storage and feedback mechanism 5 is deeply buried in the soil subgrade 3, and there is a fluid connection between the soil subgrade 3 and the rainwater guiding and filtering mechanism 2, allowing water that cannot be discharged in time from the rainwater guiding and filtering mechanism 2 to be guided to the water storage and feedback mechanism 5 for storage. A water pump is installed inside the water storage and feedback mechanism 5, which drives the water in the water storage and feedback mechanism 5 to be discharged when the pump is working. The sprinkler device 6 is installed in the green belt 4. The sprinkler device 6 is connected to the water storage and feedback mechanism 5. Under the action of the water pump, it can irrigate the green belt 4 to realize the collection and feedback of rainwater.

[0062] Example 2

[0063] The sponge city drainage system with water storage and feedback effects provided in Example 1 is further optimized, specifically, as follows: Figure 3 As shown, the rainwater guiding and filtering mechanism 2 includes a road divider block 201, and a drainage ditch 202 is provided in the middle of the road divider block 201.

[0064] The top of the drainage ditch 202 and the top of the side facing the city road 1 are provided with a gap, and the bottom of the gap on the side of the drainage ditch 202 is lower than the top of the city road 1.

[0065] The top of the road divider block 201 is covered with a rainwater filter section 203. The rainwater filter section 203 seals the gaps in the drainage ditch 202, and rainwater can enter the interior of the drainage ditch 202 through the rainwater filter section 203 and be discharged along the drainage ditch 202, while debris is blocked outside the rainwater filter section 203.

[0066] A water pipe 204 is installed on the side of the drainage ditch 202 facing the green belt 4.

[0067] Through the above structural design, when water accumulates on the surface of urban road 1, rainwater will enter the interior of drainage ditch 202 through the opening on the side of the rainwater filter 203 and be discharged, thus preventing urban flooding. During the rainwater discharge process, the permeable rainwater filter 203 will block floating debris on the water surface to prevent debris from accumulating in drainage ditch 202 and causing blockage, which would affect drainage efficiency. When the amount of rainwater is too large, the water level in drainage ditch 202 will overflow the opening of water inlet pipe 204, and the water will be guided through water inlet pipe 204 into water storage and feedback mechanism 5 for collection and storage. When needed, the collected water can be drawn from water storage and feedback mechanism 5 for feedback.

[0068] Specifically, such as Figures 2-3 As shown, the connection height between the water inlet pipe 204 and the drainage ditch 202 is located at half the height of the drainage ditch 202. The other end of the water inlet pipe 204 extends downwards and connects to the upper part of the side of the water storage and feedback mechanism 5. During urban drainage, in low rainfall conditions, rainwater is discharged directly through the drainage ditch 202. When the rainfall is too heavy and overflows the inlet of the water inlet pipe 204, the rainwater is diverted through the water inlet pipe 204 to the water storage and feedback mechanism 5 for storage, to prevent urban flooding caused by insufficient drainage from the drainage ditch 202. The specific height of the water inlet pipe 204 can be set according to the local rainfall and the drainage pressure of the urban drainage system. If it is necessary to increase the water storage capacity, the height of the water inlet pipe 204 in the drainage ditch 202 can be reduced accordingly.

[0069] Example 3

[0070] The sponge city drainage system with water storage and feedback effects provided in Example 2 has been further optimized, such as... Figure 4 As shown, to solve the problem of debris clogging, the rainwater filtration unit 203 includes a sealing cover 2031. The sealing cover 2031 is used to seal the opening on the side of the road divider block 201 to prevent debris from directly entering the drainage ditch 202 and clogging its flow. A water-proof chamber 2032 is provided in the middle of the sealing cover 2031. An inlet 2033 is provided on the side of the water-proof chamber 2032 facing the urban road 1. A filter screen 2034 is provided between the inlets 2033. An outlet 2035 is provided on the side of the water-proof chamber 2032 away from the inlet 2033, and the outlet 2035 is located at the top of the water-proof chamber 2032.

[0071] Through the above structural design, rainwater first enters the water-tight chamber 2032 through the filter screen 2034. At this point, debris in the rainwater blocks the filter screen 2034. The rainwater can only enter the drainage ditch 202 through the outlet 2035 after its depth exceeds the bottom of the outlet 2035. A small amount of rainwater is diverted and discharged through the water-tight chamber 2032. The silt in the rainwater will settle in the water-tight chamber 2032, reducing the amount of silt entering the drainage ditch 202.

[0072] It should be noted that the filter screen 2034 is connected to the inlet 2033 by bolts, and the bottom of the filter screen 2034 is flush with the bottom of the water-blocking chamber 2032. After the drainage system has been operating for a long time, the filter screen 2034 can be disassembled to clean the silt accumulated in the water-blocking chamber 2032, preventing silt from overflowing the outlet 2035 and entering the drainage ditch 202 in large quantities.

[0073] In specific implementation, such as Figure 5 As shown, a groove is provided on the side of the water outlet 2035 facing the road divider block 201. An anti-backflow component 2036 is hinged inside the water outlet 2035 and can be flipped along the upper end of the water outlet 2035. The anti-backflow component 2036 can seal the water outlet 2035. The anti-backflow component 2036 is limited by the groove and can only be flipped towards the road divider block 201.

[0074] Through the above structural design, during normal drainage, the anti-backflow component 2036 will flip towards the drainage ditch 202 under the action of water flow, thus achieving normal drainage. When the water flow is large and the water pressure in the drainage ditch 202 is greater than the external water pressure, the anti-backflow component 2036 will close the outlet 2035 under the action of water pressure, thereby preventing water from flowing back into the ditch.

[0075] Example 4

[0076] The sponge city drainage system with water storage and feedback effects provided in the above embodiments can be further optimized, such as... Figures 1-2 As shown, the water storage and feedback mechanism 5 includes a water storage tank 501, which is pre-buried in the soil subgrade 3, effectively reducing the space occupied by the water storage tank 501. The capacity of the water storage tank 501 can be reasonably set according to the local rainfall. The top of the water storage tank 501 is flush with the top of the soil subgrade 3, and by lowering the height of the water storage tank 501, rainwater in the drainage ditch 202 can better flow into the water storage tank 501 through the water pipe 204 for storage. The opening of the water storage tank 501 is equipped with a manhole cover for sealing, which improves safety. At the same time, the manhole cover can be opened periodically to clean the silt in the water storage tank 501, preventing silt accumulation and reducing the volume of the water storage tank 501.

[0077] A guide pipe 502 is installed at the bottom of the side of the water storage tank 501, extending into the soil subgrade 3 at the bottom of the green belt 4. A water pump is installed inside the water storage tank 501 and connected to the guide pipe 502. When rainwater is needed to irrigate the green belt 4, the water pump operates to draw water stored in the water storage tank 501 and irrigates the green belt 4 through the sprinkler device 6. To prevent the water pump from malfunctioning due to silt, a filter device is installed at the water inlet of the water pump to filter the water in the water storage tank 501.

[0078] Several sprinkler devices 6 are provided, and each sprinkler device 6 is evenly distributed in the green belt 4. The irrigation area of ​​the green belt 4 is increased by increasing the number of sprinkler devices 6.

[0079] To reduce the cost of municipal greening irrigation, the sprinkler system 6 is also connected to the municipal water supply, and a water valve is installed at the connection point. When the water level in the storage tank 501 is insufficient, the water supply path of the sprinkler system 6 can be switched via the water valve to irrigate the green belt 4 with municipal water. This dual-purpose irrigation system reduces the cost of installing supporting facilities.

[0080] Several water pipes 204 and water storage tanks 501 are distributed along the edge of the urban road 1 to improve the drainage efficiency and water storage capacity of the urban drainage system. Furthermore, multiple water storage tanks 501 enable grid-based management of specific areas, allowing for irrigation of individual zones.

[0081] The usage process of the sponge city drainage system with water storage and feedback effects provided by this utility model is as follows:

[0082] System setup:

[0083] The road divider 201 is pre-embedded between the urban road 1 and the green belt 4, and the opening on the side of the road divider 201 faces the urban road 1.

[0084] Rainwater filter 203 is installed on the road divider block 201, and the bottom of the rainwater filter 203 extends to the bottom of the urban road 1. The rainwater filter 203 is limited and fixed by the cooperation of the urban road 1 and the road divider block 201. At the same time, the bottom of the filter screen 2034 is set horizontally with the top of the urban road 1.

[0085] A water storage tank 501 is pre-buried in the deep soil subgrade 3, and the drainage ditch 202 in the road divider block 201 is connected to the water storage tank 501 through the water pipe 204. At the same time, the bottom of the side of the water storage tank 501 leads out the guide pipe 502 to the soil subgrade 3 below the green belt 4, and several spray devices 6 are led out from the guide pipe 502 into the green belt 4.

[0086] A water pump is installed inside the water storage tank 501 and connected to the diversion pipe 502. The power supply line of the water storage tank 501 is led to the municipal power supply through a conduit.

[0087] drain:

[0088] Water accumulated on the surface of urban road 1 seeps into the water-tight chamber 2032 through the filter screen 2034, and after preliminary sedimentation in the water-tight chamber 2032, it overflows through the outlet 2035 and enters the drainage ditch 202 for discharge.

[0089] When the rainfall is too heavy, the drainage ditch 202 cannot drain the rainwater in time. The rainwater level in the drainage ditch 202 will rise above the opening of the water inlet pipe 204. At this time, the rainwater will be led to the water storage tank 501 for collection through the water inlet pipe 204.

[0090] Furthermore, when the water pressure in the drainage ditch 202 is greater than the surface water pressure of the urban road 1, the water pressure in the drainage ditch 202 will exert pressure on the anti-backflow component 2036, causing the anti-backflow component 2036 to seal the outlet 2035, thereby preventing rainwater backflow and urban flooding. After a portion of the water in the drainage ditch 202 is discharged, when the pressure of the water inside the drainage ditch 202 on the outlet 2035 is less than the pressure of the surface water of the urban road 1, the outlet 2035 will open to continue drainage.

[0091] Feedback and support:

[0092] The water pump in the water storage tank 501 is operated remotely. Driven by the water pump, the rainwater in the water storage tank 501 is transported to each sprinkler device 6 through the diversion pipe 502 and sprayed out to irrigate the green belt 4, realizing rainwater feedback and reducing water waste.

[0093] Drainage system cleaning:

[0094] Open the filter screen 2034 to clean the sludge that has settled in the water-proof chamber 2032;

[0095] Remove the rainwater filter 203 and clean the silt that has settled in the drainage ditch 202;

[0096] Open the manhole cover and clean the silt in the water storage tank 501;

[0097] The manhole covers of filter screen 2034, rainwater filter section 203, and water storage tank 501 were restored respectively.

[0098] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A sponge city drainage system with water storage and feedback effects, characterized in that its... include: Soil roadbed (3), on which urban roads (1) and green belts (4) are respectively set; A rainwater guiding and filtering mechanism (2) is provided at the junction of the urban road (1) and the green belt (4). The top of the rainwater guiding and filtering mechanism (2) is higher than the top of the urban road (1) and the green belt (4). The rainwater guiding and filtering mechanism (2) can be used for guiding and filtering rainwater. The water storage and feedback mechanism (5) is buried deep in the soil roadbed (3). The soil roadbed (3) is fluidly connected to the rainwater guiding and filtering mechanism (2), so that the water that cannot be discharged in time in the rainwater guiding and filtering mechanism (2) is guided to the water storage and feedback mechanism (5) for storage. The water storage and feedback mechanism (5) is equipped with a water pump. When the water pump is working, it can drive the water in the water storage and feedback mechanism (5) to be discharged outward. A sprinkler device (6) is installed in the green belt (4). The sprinkler device (6) is connected to the water storage and feedback mechanism (5). Under the action of the water pump, water can be poured into the green belt (4).

2. The sponge city drainage system with water storage and feedback effects according to claim 1, characterized in that, The rainwater guiding and filtering mechanism (2) includes a road dividing block (201), and a drainage ditch (202) is provided in the middle of the road dividing block (201). The top of the drainage ditch (202) and the top of the side facing the city road (1) are provided with a gap, and the bottom of the gap on the side of the drainage ditch (202) is lower than the top of the city road (1); The top of the road divider block (201) is covered with a rainwater filter section (203), which seals the gaps in the drainage ditch (202). Rainwater can enter the interior of the drainage ditch (202) through the rainwater filter section (203) and be discharged along the drainage ditch (202), while debris is blocked outside the rainwater filter section (203). A water pipe (204) is installed on the side of the drainage ditch (202) facing the green belt (4).

3. The sponge city drainage system with water storage and feedback effects according to claim 2, characterized in that, The connection height between the water inlet pipe (204) and the drainage ditch (202) is located at half the height of the drainage ditch (202), and the other end of the water inlet pipe (204) extends downward to connect to the upper part of the side of the water storage feedback mechanism (5).

4. The sponge city drainage system with water storage and feedback effects according to claim 2, characterized in that, The rainwater filtration section (203) includes a closed cover (2031), a water-proof chamber (2032) is provided in the middle of the closed cover (2031), an inlet (2033) is provided on the side of the water-proof chamber (2032) facing the urban road (1), and a filter screen (2034) is provided between the inlets (2033). The water-proof chamber (2032) has an outlet (2035) on the side away from the inlet (2033), and the outlet (2035) is located at the top of the water-proof chamber (2032).

5. The sponge city drainage system with water storage and feedback effects according to claim 4, characterized in that, The filter screen (2034) is connected to the inlet (2033) by bolts, and the bottom of the filter screen (2034) is flush with the bottom of the water-blocking chamber (2032).

6. The sponge city drainage system with water storage and feedback effects according to claim 4, characterized in that, The outlet (2035) is internally hinged with an anti-backflow component (2036) that can be flipped along the upper end of the outlet (2035), and the anti-backflow component (2036) can seal the outlet (2035).

7. The sponge city drainage system with water storage and feedback effects according to claim 6, characterized in that, The outlet (2035) has a groove on the side facing the road divider block (201), and the anti-backflow component (2036) is limited by the groove and can only flip towards the road divider block (201).

8. The sponge city drainage system with water storage and feedback effects according to claim 2, characterized in that, The water storage feedback mechanism (5) includes a water storage tank (501), which is pre-buried in the soil subgrade (3). The top of the water storage tank (501) is flush with the top of the soil subgrade (3), and the mouth of the water storage tank (501) is sealed with a well cover. A guide pipe (502) is provided at the bottom of the side of the water storage tank (501), and the guide pipe (502) extends into the soil subgrade (3) at the bottom of the green belt (4); The water pump is located inside the water storage tank (501) and connected to the guide pipe (502).

9. The sponge city drainage system with water storage and feedback effects according to claim 8, characterized in that, There are several spray devices (6), and each spray device (6) is evenly distributed in the green belt (4); The spray device (6) is also connected to municipal water supply, and a water valve is provided at the connection point between the spray device (6) and the municipal water supply.

10. The sponge city drainage system with water storage and feedback effects according to claim 9, characterized in that, The water pipe (204) and the water storage tank (501) are distributed in several places along the edge of the city road (1).

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