An ecological rain garden based on sponge city

Abstract

This application relates to an ecological rain garden based on sponge city principles, specifically within the field of ecological rain gardens. It includes a ditch and an artificial wetland module along the garden's edge. A water collection trough is installed in the ditch, comprising a guide section and a horizontal trough section. The horizontal trough section connects to both ends of the guide section, forming a ring structure. A water storage tank assembly is located in the center of the horizontal trough section, and a filter layer assembly is installed within the water storage tank assembly. The lower end of the water storage tank assembly is connected to the artificial wetland module via a pipe. This application constructs an ecological rain garden by incorporating a water collection trough, water storage tank assembly, filter layer assembly, and artificial wetland module, achieving efficient rainwater collection, purification, and utilization. The ring structure of the water collection trough and the design of the guide section improve rainwater collection efficiency, while the combination of the filter layer assembly and the artificial wetland module effectively purifies the rainwater quality.

Description

Technical Field

[0001] This application relates to the technical field of ecological rain gardens, and in particular to an ecological rain garden based on sponge cities. Background Technology

[0002] With the acceleration of urbanization, cities face numerous rainwater-related problems. Traditional urban drainage systems are increasingly revealing their limitations in dealing with extreme weather events such as torrential rains, leading to increasingly serious urban flooding and stormwater runoff pollution. In urban construction, large amounts of hard surfaces have replaced natural soil, hindering natural rainwater infiltration and causing a rapid increase in surface runoff. When rainfall exceeds the carrying capacity of the urban drainage system, urban flooding easily occurs, severely impacting urban transportation, residents' lives, and infrastructure.

[0003] Existing rainwater harvesting and treatment methods suffer from inefficiency and poor purification, failing to collect rainwater comprehensively and efficiently, resulting in a significant waste of rainwater resources. Furthermore, the lack of effective purification measures for collected rainwater makes it difficult to remove impurities and pollutants, hindering the full utilization of the collected water. In addition, existing rainwater harvesting systems are prone to blockages and debris buildup over long-term use, affecting normal operation; cleaning and maintenance are often difficult, increasing operating costs and management complexity. Utility Model Content

[0004] In order to achieve effective utilization and management of rainwater, this application provides an ecological rain garden based on sponge city.

[0005] This application provides an ecological rain garden based on sponge cities, which adopts the following technical solution: An ecological rain garden based on sponge city concept includes a ditch and an artificial wetland module along the edge of the garden. A water collection tank is installed in the ditch, and the water collection tank includes a guide section and a flat trough section. The flat trough section is connected to both ends of the guide section to form a ring structure. A water storage tank group is set in the middle of the flat trough section. A filter layer group is set in the water storage tank group, and the lower end of the water storage tank group is connected to the artificial wetland module through a pipe. Two sets of cleaning racks are symmetrically installed in the flat trough section. The exterior of the flat trough section is also provided with a positioning seat for the cleaning racks to slide on. A drive component is also installed on the positioning seat to drive the two sets of cleaning racks to move synchronously.

[0006] By adopting the above technical solution, the ring-shaped design of the water collection trough in the ditch allows for more comprehensive rainwater collection, improving rainwater harvesting efficiency. Simultaneously, placing the water collection trough at the garden edge effectively collects surface runoff, while the water storage tanks store the collected rainwater, and the filter layer provides initial purification, reducing impurities and pollutants. The coordinated cleaning rack and drive mechanism allow for regular cleaning of the trough, preventing debris accumulation and clogging of the water collection trough, ensuring the normal operation of the rainwater harvesting system.

[0007] Optionally, the flow guide includes a top shell and two sets of drainage inclined shells. The two sets of drainage inclined shells are installed at both ends of the top shell, and one end of the drainage inclined shell is connected to the top shell, while the other end of the drainage inclined shell is connected to the flat groove.

[0008] By adopting the above technical solution, the structural design of the top shell of the guide section and the inclined shell of the drainage section can guide rainwater to flow smoothly into the flat trough section, avoid rainwater accumulation on the top of the water collection trough shell, and further improve the rainwater collection efficiency.

[0009] Optionally, the filter layer assembly includes a sand layer, an activated carbon layer, and a biofilm layer, which are arranged sequentially from top to bottom.

[0010] By adopting the above technical solution, the sand and gravel layer in the filter layer group can filter larger particulate impurities in rainwater, the activated carbon layer can adsorb organic matter and odors in rainwater, and the biofilm layer can further decompose pollutants in rainwater through the action of microorganisms. The three-layer filtration structure effectively improves the water purification effect.

[0011] Optionally, the cleaning rack includes a right-angle scraper and a connecting seat that cooperates with the driving component. The right-angle scraper is slidably installed in the flat groove, and the connecting seat is installed on the upper end face of the right-angle scraper and is fixedly connected to the right-angle scraper.

[0012] By adopting the above technical solution, the right-angle scraper of the cleaning frame can fit against the inner wall of the flat groove and effectively scrape away debris in the flat groove during the sliding process. The connecting seat cooperates with the driving component to realize the movement of the cleaning frame.

[0013] Optionally, the connecting seat includes a vertical plate, a sleeve, and a bending frame. The sleeve is disposed at the upper end of the vertical plate, and the bending frame is disposed at the upper end of the sleeve. The vertical plate, the sleeve, and the bending frame are integrally formed.

[0014] By adopting the above technical solution, the vertical plate, sleeve, and bending frame of the connecting seat are integrally formed, which can ensure that the overall use is more stable. The sleeve can slide on the guide slide rod to ensure the stability of the cleaning frame movement, while the bending frame is convenient to connect with the drive component.

[0015] Optionally, the positioning seat includes a ground support, a protective cover plate, and a sleeve portion that is slidably mounted on a guide slide rod. The protective cover plate is fixedly mounted on the upper end face of the ground support, and the guide slide rod is fixedly mounted on the front end face of the ground support.

[0016] By adopting the above technical solution, the ground support of the positioning seat provides support for the entire device, the protective cover can protect the drive components and other parts from the corrosion of rainwater and debris, and the guide slide rod provides guidance for the sliding of the cleaning frame, ensuring the accuracy of the cleaning frame's movement.

[0017] Optionally, the driving component includes a first pulley, a second pulley, and a transmission belt. The first pulley and the second pulley are both rotatably mounted on a ground support. The two ends of the transmission belt are sleeved on the first pulley and the second pulley. A drive motor for driving the first pulley to rotate is also mounted on the ground support.

[0018] By adopting the above technical solution, the driving component adopts a structure of pulleys and transmission belts. The first pulley is driven to rotate by the drive motor, which in turn drives the transmission belt and the second pulley to rotate, thereby realizing the synchronous movement of the two sets of cleaning frames. The structure is simple and the transmission is stable.

[0019] Optionally, the constructed wetland module consists of aquatic plants and a substrate layer.

[0020] By adopting the above technical solution, the artificial wetland module is composed of aquatic plants and a substrate layer. The aquatic plants can absorb nutrients from rainwater, and the substrate layer can further filter and purify rainwater, while providing a growing environment for aquatic plants and enhancing the ecological purification function of the entire ecological rain garden.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This application constructs an ecological rain garden by setting up a water collection trough shell, a water storage tank assembly, a filter layer assembly, and an artificial wetland module within the garden, achieving efficient rainwater collection, purification, and utilization. The annular structure and flow guide design of the water collection trough shell improve rainwater collection efficiency, while the combination of the filter layer assembly and the artificial wetland module effectively purifies rainwater quality. Simultaneously, the inclusion of a cleaning rack and drive components facilitates the cleaning and maintenance of the rainwater collection channels, ensuring the long-term stable operation of the entire system. Furthermore, this ecological rain garden effectively alleviates urban flooding and rainwater runoff pollution problems during use, demonstrating significant ecological and environmental benefits. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application.

[0023] Figure 2 This is a schematic diagram of the structure of the filter layer group in the embodiments of this application.

[0024] Figure 3 This is a perspective view of the water collection tank shell in the embodiments of this application.

[0025] Figure 4 yes Figure 3 Side view of the device shown.

[0026] Figure 5 This is a perspective view of the cleaning frame, positioning seat, and driving component in cooperation according to the embodiments of this application.

[0027] Figure 6 yes Figure 5 The device shown is a perspective view without the protective cover installed.

[0028] Figure 7 yes Figure 6 Top view of the device shown.

[0029] Explanation of reference numerals in the attached drawings: 1. Water collection tank shell; 10. Constructed wetland module; 11. Flow guide section; 111. Top shell; 112. Drainage inclined shell; 12. Horizontal trough section; 2. Water storage tank assembly; 3. Filter layer assembly; 31. Sand and gravel layer; 32. Activated carbon layer; 33. Biofilm layer; 4. Cleaning frame; 41. Right-angle scraper; 42. Connecting seat; 421. Vertical plate section; 422. Sleeve section; 423. Bending frame; 5. Positioning seat; 51. Ground support; 52. Protective cover plate; 53. Guide slide bar; 6. Drive component; 61. First pulley; 62. Second pulley; 63. Transmission belt. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses an ecological rain garden based on sponge city principles. (See also...) Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, an ecological rain garden based on sponge city principles includes a ditch and an artificial wetland module 10 along the edge of the garden. A water collection tank 1 is installed in the ditch, comprising a guide section 11 and a horizontal trough section 12. The horizontal trough section 12 connects to both ends of the guide section 11 to form a ring structure. A water storage tank group 2 is located in the middle of the horizontal trough section 12, containing a filter layer group 3. The lower end of the water storage tank group 2 is connected to the artificial wetland module 10 via a pipe. Two sets of cleaning racks 4 are symmetrically installed in the horizontal trough section 12. The exterior of the horizontal trough section 12 also has a positioning seat 5 for the cleaning racks 4 to slide on. A driving component 6 is installed on the positioning seat 5 to drive the two sets of cleaning racks 4 to move synchronously. By setting the water collection tank 1 in the ditch, its ring structure design can collect rainwater more comprehensively, improving rainwater collection efficiency. Simultaneously, the rainwater collection tank 1 is placed at the edge of the garden to effectively collect surface runoff. The water storage tank group 2 stores the collected rainwater, and the filter layer group 3 provides preliminary purification of the rainwater, reducing impurities and pollutants. The positioning seat 5 is fixedly installed on the ground outside the garden ditch, ensuring stable installation of the cleaning frame 4 and the drive component 6. This facilitates regular cleaning of the flat trough section 12 using the cleaning frame 4 and the drive component 6, preventing debris accumulation and clogging of the rainwater collection tank 1, and ensuring the normal operation of the rainwater collection system. The guide section 11 includes a top shell 111 and two sets of drainage inclined shells 112. The two sets of drainage inclined shells 112 are installed at both ends of the top shell 111, with one end of the drainage inclined shell 112 connected to the top shell 111 and the other end connected to the flat trough section 12. The structural design of the top shell 111 and the drainage inclined shell 112 of the guide section 11 guides rainwater smoothly into the flat trough section 12, preventing rainwater from accumulating on the top of the water collection tank shell 1, further improving rainwater collection efficiency. Simultaneously, the inner bottom surface of the top shell 111 is also inclined, facilitating the stable flow of rainwater from both sides into the drainage inclined shell 112, effectively preventing rainwater residue in the top shell 111. The artificial wetland module 10 consists of aquatic plants and a substrate layer. The aquatic plants absorb nutrients from the rainwater, while the substrate layer further filters and purifies the rainwater, providing a growing environment for the aquatic plants and enhancing the ecological purification function of the entire ecological rain garden.

[0032] Reference Figure 1 and Figure 2As shown, the filter layer group 3 includes a sand and gravel layer 31, an activated carbon layer 32, and a biofilm layer 33, arranged sequentially from top to bottom. The sand and gravel layer 31 in the filter layer group 3 can filter larger particulate impurities in rainwater, the activated carbon layer 32 can adsorb organic matter and odors from rainwater, and the biofilm layer 33 can further decompose pollutants in rainwater through the action of microorganisms. This three-layer filtration structure effectively improves water purification, ensuring that suspended solids, organic matter, and heavy metals in rainwater can be effectively removed after multiple layers of filtration in the filter layer group 3, resulting in usable rainwater.

[0033] Reference Figure 5 , Figure 6 and Figure 7 As shown, the cleaning frame 4 includes a right-angle scraper 41 and a connecting seat 42 that cooperates with the drive component 6. The right-angle scraper 41 is slidably installed in the flat groove 12, and the connecting seat 42 is installed on the upper end face of the right-angle scraper 41, and the connecting seat 42 is fixedly connected to the right-angle scraper 41. By designing the cleaning frame 4 with a structure in which the right-angle scraper 41 and the connecting seat 42 cooperate, it is convenient for the right-angle scraper 41 of the cleaning frame 4 to fit against the inner wall of the flat groove 12 during use, effectively scraping away debris in the flat groove 12 during sliding. The connecting seat 42 cooperates with the drive component 6 to realize the movement of the cleaning frame 4. When not cleaning, the right-angle scraper 41 can be stably fitted against both ends in the flat groove 12, thus ensuring that rainwater flowing down from the drainage inclined shell 112 can stably enter the flat groove 12 and collect through the right-angle scraper 41. Moreover, an arc corner can be set on the inner corner of the right-angle scraper 41, which facilitates better diversion of rainwater flow. The connecting seat 42 includes a vertical plate portion 421, a sleeve portion 422, and a bending frame 423. The sleeve portion 422 is disposed at the upper end of the vertical plate portion 421, and the bending frame 423 is disposed at the upper end of the sleeve portion 422. The vertical plate portion 421, the sleeve portion 422, and the bending frame 423 are integrally formed. The vertical plate portion 421, sleeve portion 422, and bending frame 423 of the connecting seat 42 are integrally formed, which can ensure a more stable overall use. The vertical plate portion 421 is set on the upper end face of the right-angle scraper 41, and the vertical plate portion 421 and the right-angle scraper 41 are fixed together. This ensures that the right-angle scraper 41 can be stably installed in the flat groove portion 12. During use, the sleeve portion 422 can slide on the guide slide rod 53, which can drive the cleaning frame 4 at the opposite end to move synchronously, ensuring the stability of the movement of the cleaning frame 4. The bending frame 423 can be easily connected to the driving component 6, which can better control the movement of the connecting seat 42 through the driving component 6.

[0034] Reference Figure 5 and Figure 6As shown, the positioning seat 5 includes a ground support 51, a protective cover 52, and a sleeve portion 422 slidably mounted on a guide rod 53. The protective cover 52 is fixedly mounted on the upper end face of the ground support 51, and the guide rod 53 is fixedly mounted on the front end face of the ground support 51. By designing the positioning seat 5 with a structure in which the ground support 51, the protective cover 52, and the guide rod 53 cooperate, the ground support 51 of the positioning seat 5 provides support for the entire device when in use, the protective cover 52 can protect components such as the drive unit 6 from rainwater and debris, and the guide rod 53 provides guidance for the sliding of the cleaning frame 4, ensuring the accuracy of the movement of the cleaning frame 4. Reference Figure 6 and Figure 7 As shown, the driving component 6 includes a first pulley 61, a second pulley 62, and a transmission belt 63. Both the first pulley 61 and the second pulley 62 are rotatably mounted on the ground support 51. The two ends of the transmission belt 63 are fitted onto the first pulley 61 and the second pulley 62. A drive motor for driving the first pulley 61 is also mounted on the ground support 51. The driving component 6 uses a pulley and transmission belt 63 structure. The drive motor drives the first pulley 61 to rotate, which in turn drives the transmission belt 63 and the second pulley 62 to rotate, thereby achieving synchronous movement of the two sets of cleaning frames 4. The structure is simple and the transmission is stable.

[0035] The implementation principle of an ecological rain garden based on sponge city in this application embodiment is as follows: In actual use, a water collection tank shell 1, a water storage tank group 2, and a filter layer group 3 are set in the garden, and an artificial wetland module 10 is also constructed. Aquatic plants are planted on the substrate layer to form a complete artificial wetland ecosystem. When it rains, rainwater flows into the flat trough section 12 through the guide section 11, then enters the water storage tank group 2. After being filtered and purified by the filter layer group 3, it flows into the artificial wetland module 10 through pipes for further purification and utilization. The drive motor is started periodically to drive the first pulley 61 to rotate, which drives the transmission belt 63 and the second pulley 62 to rotate, so that the two sets of cleaning frames 4 move synchronously to clean the flat trough section 12 and prevent debris from accumulating.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sponge city-based ecological rainwater garden, comprising a trench and a constructed wetland module (10) opened at the edge of the garden, characterized in that: A water collection tank shell (1) is installed in the ditch. The water collection tank shell (1) includes a flow guide (11) and a flat trough (12). The flat trough (12) is connected to both ends of the flow guide (11) to form a ring structure. A water storage tank group (2) is provided in the middle of the flat trough (12). A filter layer group (3) is provided in the water storage tank group (2). The lower end of the water storage tank group (2) is connected to the artificial wetland module (10) through a pipe. Two sets of cleaning racks (4) are symmetrically installed in the flat trough (12). The outside of the flat trough (12) is also provided with a positioning seat (5) for the cleaning racks (4) to slide on. A driving component (6) for driving the two sets of cleaning racks (4) to move synchronously is also installed on the positioning seat (5). 2.The sponge city-based ecological rainwater garden of claim 1, wherein: The flow guide (11) includes a top shell (111) and two sets of drainage inclined shells (112). The two sets of drainage inclined shells (112) are installed at both ends of the top shell (111), and one end of the drainage inclined shell (112) is connected to the top shell (111), and the other end of the drainage inclined shell (112) is connected to the flat groove (12).

3. The ecological rainwater garden based on sponge city according to claim 1, characterized in that: The filter layer group (3) includes a sand and gravel layer (31), an activated carbon layer (32), and a biofilm layer (33), which are arranged sequentially from top to bottom.

4. The ecological rainwater garden based on sponge city according to claim 1, characterized in that: The cleaning rack (4) includes a right-angle scraper (41) and a connecting seat (42) that cooperates with the drive unit (6). The right-angle scraper (41) is slidably installed in the flat groove (12). The connecting seat (42) is installed on the upper end face of the right-angle scraper (41) and is fixedly connected to the right-angle scraper (41).

5. The ecological rainwater garden based on sponge city according to claim 4, characterized in that: The connecting seat (42) includes a vertical plate (421), a sleeve (422) and a bending frame (423). The sleeve (422) is located at the upper end of the vertical plate (421), and the bending frame (423) is located at the upper end of the sleeve (422). The vertical plate (421), the sleeve (422) and the bending frame (423) are integrally formed. 6.The sponge city-based ecological rainwater garden of claim 5, characterized in that: The positioning seat (5) includes a ground support (51), a protective cover plate (52), and a sleeve part (422) which is slidably mounted on a guide slide rod (53). The protective cover plate (52) is fixedly mounted on the upper end face of the ground support (51), and the guide slide rod (53) is fixedly mounted on the front end face of the ground support (51).

7. The ecological rainwater garden based on sponge city according to claim 6, characterized in that: The driving component (6) includes a first pulley (61), a second pulley (62), and a transmission belt (63). The first pulley (61) and the second pulley (62) are rotatably mounted on the ground support (51). The two ends of the transmission belt (63) are sleeved on the first pulley (61) and the second pulley (62). The ground support (51) is also equipped with a drive motor that drives the first pulley (61) to rotate. 8.The sponge city-based ecological rainwater garden of claim 7, characterized in that: The artificial wetland module (10) consists of aquatic plants and a substrate layer.

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