Rainwater recovery device suitable for sponge city

By installing V-shaped water guide plates and a multi-stage filtration system on the building roof, the problem of debris clogging the rainwater wells was solved, achieving efficient filtration and recycling of rainwater, and improving the efficiency of the drainage system and the utilization rate of water resources.

CN224063559UActive Publication Date: 2026-03-31SHANGHAI WEITAO ENGINEERING DESIGN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Debris on the roof of a building can easily clog rainwater wells or sewers, affecting drainage.

Method used

The rainwater harvesting device consists of a V-shaped water guide plate, a flow guide joint, a flow guide pipe, a main pipe, a preliminary filter, and a recovery tank. Through multi-stage filtration, it achieves preliminary and secondary filtration of rainwater, ensuring that the rainwater quality meets the standards for domestic drinking water.

Benefits of technology

It effectively prevents debris from clogging the system, increases the drainage capacity of rainwater wells and sewers, and enables the recycling of rainwater, reducing urban flood control pressure and saving water resources.

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Abstract

The utility model relates to the technical field of sponge cities, and provides a rainwater recovery device suitable for sponge cities, which comprises a V-shaped water guide plate and a flow guide joint, the surface of the V-shaped water guide plate is provided with a mounting port, the flow guide joint is mounted on the inner wall of the mounting port, the port of the flow guide joint is fixedly connected with a flow guide pipe, and the flow guide pipe is fixedly connected with the flow guide plate. The end face of the flow guide pipe is fixedly connected with a main pipe. The rainwater recycling device is reasonable in structure, rainwater is drained into the primary filter through a flow guide pipe and a main pipe on the roof of a building through a V-shaped water guide plate and a flow guide connector, the rainwater is primarily filtered, the rainwater is drained into the recycling tank after being primarily filtered, and the rainwater is filtered through the filtering mechanism; a living person of a building opens an electromagnetic valve, so that the filtered rainwater in the recycling tank is discharged into a rainwater well, or the treated rainwater is used as domestic water of residents.
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Description

Technical Field

[0001] This utility model relates to the field of sponge city technology, specifically to a rainwater recycling device suitable for sponge cities. Background Technology

[0002] Sponge cities, as an emerging concept of urban stormwater management, have gradually developed. A sponge city refers to a city that has good resilience in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs, stores, infiltrates, purifies, and reuses water, effectively improving the standards of urban drainage systems, alleviating the pressure of urban flooding, and collecting and recycling rainwater, which can reduce the pressure of urban flooding and save water resources.

[0003] Buildings in cities are equipped with rainwater pipes that connect from the roof to the ground. Rainwater flows over the ground and collects in rainwater wells. It then flows through pipes directly to the underground sewer system, where it is collected for treatment or discharge. However, the roofs of these buildings often contain debris, which can easily clog the rainwater wells or sewers when it is discharged through the pipes, affecting the drainage capacity of the wells or sewers. Therefore, a rainwater harvesting device suitable for sponge cities is proposed. Utility Model Content

[0004] This utility model proposes a rainwater recycling device suitable for sponge cities, which solves the problem in related technologies that the roofs of buildings often contain debris, which easily clogs the rainwater wells or sewers when discharged through pipes, affecting the drainage capacity of the rainwater wells or sewers.

[0005] The technical solution of this utility model is as follows: A rainwater recycling device suitable for sponge cities includes: a V-shaped water guide plate and a flow guide joint. The surface of the V-shaped water guide plate is provided with an installation port. The flow guide joint is installed on the inner wall of the installation port. A flow guide pipe is fixedly connected to the port of the flow guide joint. A main pipe is fixedly connected to the end face of the flow guide pipe.

[0006] A preliminary filter is fixedly connected to the end face of the main pipe, and a recovery tank is fixedly connected to the end face of the preliminary filter. A drain outlet is provided on the surface of the recovery tank, and a drain pipe is fixedly connected to the inner wall of the drain outlet. A solenoid valve is provided on the surface of the drain pipe.

[0007] The inner wall of the recycling tank is equipped with a filtration mechanism.

[0008] Optionally, a reinforcing tube is provided between the flow guide connector and the flow guide pipe, and a sealing ring is fixedly connected to the inner wall of the reinforcing tube.

[0009] Optionally, the inner wall of the preliminary filter is fixedly connected with multiple filter screens, and the mesh counts of the multiple filter screens are different.

[0010] Optionally, the filtration mechanism includes an isolation tube, a primary filter cotton, a secondary filter cotton, and an auxiliary filter element that are fixedly connected to the upper surface of the recovery tank;

[0011] The primary filter cotton and the secondary filter cotton are fixedly connected to the inner surface of the isolation tube.

[0012] Optionally, the auxiliary filter element includes multiple mesh screens, bamboo charcoal granules, and activated carbon filter cotton;

[0013] The top of the isolation tube is fixedly connected to the top of the recycling tank.

[0014] Optionally, a gasket is fixedly connected to the bottom of the recycling tank.

[0015] Optionally, a rubber protrusion is provided on the surface of one end of the V-shaped water guide plate, a groove is provided on the surface of the other end of the V-shaped water guide plate, and multiple connecting pieces are fixedly connected to the side surface of the V-shaped water guide plate, with multiple mounting holes provided on the surface of the connecting pieces.

[0016] Optionally, the surface of the main tube is fixedly connected with multiple connecting pipes.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] The roof of the building in this application uses a V-shaped water guide plate and a flow guide joint to allow rainwater to flow through the flow guide pipe and main pipe into the interior of the preliminary filter, achieving preliminary filtration of the rainwater. After passing through the preliminary filtration, the rainwater is discharged into the collection tank, where it is further filtered by the filtration mechanism. Residents of the building can open the solenoid valve to discharge the filtered rainwater in the collection tank into the rainwater well, or use the treated rainwater for domestic water use. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 is a front view of the structure of this utility model;

[0021] Figure 2 is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0022] Figure 3 is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0023] Figure 4 is a partial cross-sectional structural diagram of the preliminary filter in this utility model;

[0024] Figure 5 is a partial cross-sectional view of the recycling tank in this utility model;

[0025] In the diagram: 1. V-shaped water guide plate; 2. Flow guide connector; 3. Reinforcing pipe; 4. Flow guide pipe; 5. Main pipe; 6. Connecting pipe; 7. Preliminary filter; 8. Recovery tank; 9. Drain pipe; 10. Solenoid valve; 11. Connecting plate; 12. Filter screen; 13. Isolation pipe; 14. Drain outlet; 15. Primary filter cotton; 16. Bamboo charcoal granules; 17. Medium-efficiency filter cotton; 18. Activated carbon filter cotton; 19. Mesh screen; 20. Rubber protrusion; 21. Groove. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] Example 1

[0028] Please refer to Figures 1-5. The present invention provides a rainwater recycling device suitable for sponge cities, comprising: a V-shaped water guide plate 1 and a flow guide connector 2. The surface of the V-shaped water guide plate 1 is provided with an installation port. The flow guide connector 2 is installed on the inner wall of the installation port. The port of the flow guide connector 2 is fixedly connected to a flow guide pipe 4. The end face of the flow guide pipe 4 is fixedly connected to a main pipe 5.

[0029] A preliminary filter 7 is fixedly connected to the end face of the main pipe 5. A recovery tank 8 is fixedly connected to the end face of the preliminary filter 7. A drain outlet 14 is opened on the surface of the recovery tank 8. A drain pipe 9 is fixedly connected to the inner wall of the drain outlet 14. A solenoid valve 10 is provided on the surface of the drain pipe 9.

[0030] The inner wall of recycling tank 8 is equipped with a filtration mechanism.

[0031] The building's roof uses a V-shaped water guide plate 1 and a flow guide joint 2 to allow rainwater to flow through a flow guide pipe 4 and a main pipe 5 into the interior of a preliminary filter 7, achieving preliminary filtration of the rainwater. After passing through the preliminary filter, the rainwater flows into a collection tank 8, where it undergoes further filtration by a filtration mechanism. Residents of the building can open a solenoid valve 10 to discharge the filtered rainwater from the collection tank 8, making the treated rainwater suitable for use as domestic water.

[0032] Furthermore, a reinforcing pipe 3 is provided between the flow guide joint 2 and the flow guide pipe 4, and a sealing ring is fixedly connected to the inner wall of the reinforcing pipe 3.

[0033] Specifically, the sealing performance between the flow guide joint 2 and the flow guide pipe 4 is increased by reinforcing the sealing ring on the inner wall of the pipe 3, thus preventing leakage between the flow guide joint 2 and the flow guide pipe 4 during use.

[0034] Furthermore, the inner wall of the preliminary filter 7 is fixedly connected with multiple filter screens 12, and the mesh counts of the multiple filter screens 12 are not the same.

[0035] Specifically, impurities in the rainwater are filtered through multiple filter screens 12 inside the primary filter 7.

[0036] Furthermore, the filtration mechanism includes an isolation tube 13, a primary filter cotton 15, a secondary filter cotton 17, and auxiliary filter elements that are fixedly connected to the upper surface of the recovery tank 8;

[0037] The primary filter cotton 15 and the secondary filter cotton 17 are fixedly connected to the inner surface of the isolation tube 13. The auxiliary filter components include multiple mesh screens 19, bamboo charcoal particles 16 and activated carbon filter cotton 18.

[0038] The top of the isolation tube 13 is fixedly connected to the top of the inside of the recycling tank 8, and the bamboo charcoal granules 16 are placed between two layers of mesh 19.

[0039] Specifically, when rainwater enters the recycling tank 8, it undergoes secondary filtration through the primary filter cotton 15, bamboo charcoal granules 16, medium-efficiency filter cotton 17, and activated carbon filter cotton 18 inside the isolation pipe 13, thus achieving rainwater filtration treatment and making the rainwater meet the standards for domestic water use.

[0040] Furthermore, a gasket is fixedly connected to the bottom of the recycling tank 8, and the gasket contacts the ground.

[0041] The workflow of this application:

[0042] The roof of the building uses a V-shaped water guide plate 1 and a water guide joint 2 to allow rainwater to flow through a water guide pipe 4 and a main pipe 5 into the interior of the preliminary filter 7. The filter screen 12 filters impurities in the rainwater.

[0043] After the rainwater passes through the initial filtration, it is discharged into the recycling tank 8. The rainwater then undergoes secondary filtration through the primary filter cotton 15, bamboo charcoal granules 16, medium-efficiency filter cotton 17, and activated carbon filter cotton 18 inside the isolation pipe 13. This process treats the rainwater to meet domestic water standards. Afterward, residents of the building open the solenoid valve 10 to discharge the filtered rainwater from the recycling tank 8, making it suitable for use as domestic water.

[0044] Example 2

[0045] Based on Embodiment 1, this embodiment includes: a rubber protrusion 20 is provided on the surface of one end of the V-shaped water guide plate 1, a groove 21 is provided on the surface of the other end of the V-shaped water guide plate 1, a plurality of connecting pieces 11 are fixedly connected to the side surface of the V-shaped water guide plate 1, a plurality of mounting holes are provided on the surface of the connecting pieces 11, and a plurality of connecting pipes 6 are fixedly connected to the surface of the main pipe 5.

[0046] When the eaves of a building are too long, multiple V-shaped water guide plates 1 are installed on the eaves of the building by passing expansion bolts through the mounting holes of the connecting piece 11. At the same time, multiple V-shaped water guide plates 1 are inserted into the inner wall of the groove 21 of another V-shaped water guide plate 1 through rubber protrusions 20, so that the two V-shaped water guide plates 1 are combined. Then, they are connected to the main pipe 5 through the connecting pipe 6, so that the rainwater can be collected together.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rainwater recycling device suitable for sponge city, characterized in that, Include: V-shaped water deflector (1) and flow guide joint (2), the surface of the V-shaped water deflector (1) is provided with a mounting port, the flow guide joint (2) is installed in the inner wall of the mounting port, the port of the flow guide joint (2) is fixedly connected with the flow guide pipe (4), the end surface of the flow guide pipe (4) is fixedly connected with the main pipe (5); The end surface of the main pipe (5) is fixedly connected with the primary filter (7), the end surface of the primary filter (7) is fixedly connected with the recovery tank (8), the surface of the recovery tank (8) is provided with a drain port (14), the inner wall of the drain port (14) is fixedly connected with the drain pipe (9), the surface of the drain pipe (9) is provided with a solenoid valve (10); The inner wall of the recovery tank (8) is provided with a filtering mechanism.

2. The rainwater recycling device suitable for sponge city according to claim 1, characterized in that: The flow guide joint (2) and the flow guide pipe (4) are provided with a reinforcing pipe (3), and the inner wall of the reinforcing pipe (3) is fixedly connected with a sealing ring. 3.The rainwater recycling device for sponge city according to claim 1, wherein: The inner wall of the primary filter (7) is fixedly connected with a plurality of filter screens (12), and the mesh numbers of the plurality of filter screens (12) are inconsistent. 4.The rainwater recycling device for sponge city according to claim 1, wherein: The filtering mechanism comprises a isolation pipe (13), a primary filter cotton (15), a medium filter cotton (17) and an auxiliary filter piece fixedly connected to the upper surface of the recovery tank (8). The primary filter cotton (15) and the medium filter cotton (17) are fixedly connected to the inner surface of the isolation pipe (13). 5.The rainwater recycling device for sponge city according to claim 4, characterized in that: The auxiliary filter piece comprises a plurality of gauze nets (19), bamboo charcoal particles (16) and activated carbon filter cotton (18). The top end of the isolation pipe (13) is fixedly connected with the inner top of the recovery tank (8). 6.The rainwater recycling device for sponge city according to claim 1, wherein: The bottom end of the recovery tank (8) is fixedly connected with a gasket. 7.The rainwater recycling device for sponge city according to claim 1, wherein: The surface of one end of the V-shaped water deflector (1) is provided with a rubber protrusion (20), the surface of the other end of the V-shaped water deflector (1) is provided with a groove (21), the side surface of the V-shaped water deflector (1) is fixedly connected with a plurality of connecting pieces (11), and the surface of the connecting piece (11) is provided with a plurality of mounting holes. 8.The rainwater recycling device for sponge city according to claim 7, wherein: The surface of the main pipe (5) is fixedly connected with a plurality of connecting pipes (6).