Urban blue-green space and construction land rainwater collection modular system

Abstract

The utility model discloses a kind of urban blue-green space and construction land rainwater collection modularization system, including water storage tank and water storage pipe, the upper portion of water storage pipe is equipped with irrigation system laid on ground, water collection channel is equipped between the gap of irrigation system, the lower portion of irrigation system is provided with humidity monitoring device, the end of humidity monitoring device is connected with controller. The utility model utilizes water collection channel to collect rainwater on the surface of land, utilizes the surface layer soil water storage pipe embedded in park land, to collect rainwater that permeates into land, both are combined with each other, can improve the collection efficiency of rainwater, avoid rainwater to be lost in large amount and permeate;By setting collecting portion in connecting pipe, utilize the filter screen and movable door in collecting portion to collect garbage in water storage pipe, while collecting portion located in surface layer soil can be freely taken out, to clean garbage in water storage pipe, and drip on vegetation on the surface of soil through irrigation system, irrigation is carried out using rainwater, realize the collection and utilization of rainwater.

Description

Technical Field

[0001] This utility model relates to the field of rainwater utilization technology, specifically a modular system for collecting rainwater from urban blue-green spaces and construction land. Background Technology

[0002] Blue-green space refers to the spatial system composed of various open spaces such as water bodies, wetlands, and green spaces within the national land area. Blue space includes natural water bodies such as rivers, lakes, tidal flats, and wetlands, as well as artificial water bodies such as reservoirs and ditches, forming a composite water body space. Green space encompasses all artificial and natural open spaces within the national land area, including farmland, mountains, forests, and grasslands in agricultural and ecological spaces, as well as parks, protective green belts, and public open spaces in urban spaces. Urban parks and construction land occupy a large area in modern cities. In the construction of blue-green spaces, utilizing a large amount of idle parkland in cities to manage rainwater not only helps alleviate urban flooding but also allows for the collection and reuse of rainwater, conserving resources.

[0003] However, existing rainwater harvesting and reuse systems mainly involve sending water to reservoirs or tanks via collection channels for storage, and then extracting the rainwater from the reservoirs or tanks through pipes for reuse. However, these rainwater harvesting systems have the following problems: 1. For aesthetic reasons, collection channels are generally located on both sides of roads, and it is not feasible to construct too many channels on park land for water diversion, causing a large portion of rainwater to seep into the ground, resulting in resource waste; 2. The pipes transporting rainwater are directly connected by connecting pipes, and although rainwater filters are installed, some garbage inevitably enters the pipes during rainwater transport. This not only easily clogs the pipes, but also pollutes the rainwater stored in the reservoirs, causing it to become foul-smelling. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a modular rainwater harvesting system for urban blue-green spaces and construction land, which solves the problems of existing rainwater harvesting systems being unable to effectively collect rainwater from park land, resulting in resource waste, and the inability to filter and clean up garbage entering the water pipes, which not only easily causes blockages but also prevents the storage of rainwater.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A modular system for collecting rainwater from urban blue-green spaces and construction land includes a water storage tank buried deep underground and a water storage pipe installed inside the soil. An irrigation system laid on the ground is installed above the water storage pipe, and water collection channels are installed between the gaps in the irrigation system. A humidity monitoring device is installed below the irrigation system, and a controller is connected to the end of the humidity monitoring device.

[0007] The end of the water storage pipe is connected to the inner top of the water storage tank through the first water inlet pipe. The end of the water storage pipe is provided with a connecting bend, which is fixedly connected to the water storage pipe through a connecting pipe. The center of the connecting pipe is provided with a collection part that can be pulled upward. The collection part is a rectangular structure with open ends, and a filter screen and a movable door are respectively provided at both ends of the collection part. The filter screen is located in the downstream direction of the water flow. The water storage pipe is composed of a waterproof lower half pipe and a water-permeable upper half pipe. The upper half pipe is provided with collection plates on both sides for collecting rainwater in the soil.

[0008] The irrigation system includes a main water supply pipe, a pumping pipe extending into the bottom of the water storage tank is provided on one side of the main water supply pipe, and a pumping pump is installed on the pumping pipe. The pumping pump is automatically controlled by the controller. Several equally spaced branch water supply pipes are connected to the other side of the main water supply pipe, and the water collection channel is located between the branch water supply pipes.

[0009] Preferably, the two end faces of the lower half-tube are provided with diamond-shaped connecting grooves, and the two end faces of the upper half-tube are provided with diamond-shaped connecting parts that fit into the connecting grooves. The connecting parts are made of spring sheet material, and a horizontal spring is provided inside the connecting parts. With this configuration, in use, the diamond-shaped connecting parts are directly inserted into the connecting grooves. The opening at the top of the connecting groove compresses the diamond-shaped connecting parts and overcomes the elasticity of the diamond-shaped connecting parts and the spring until the diamond-shaped connecting parts are fully inserted into the connecting grooves. When fully inserted, the diamond-shaped connecting parts and the spring lose external compression, and the diamond-shaped connecting parts return to their original shape and are locked in the connecting grooves, thereby tightly joining the upper and lower half-tubes together.

[0010] Preferably, the inner wall of the lower pipe is provided with a waterproof membrane. This waterproof membrane can be an adhered plastic film structure or a brushed waterproof paint, and the waterproof membrane prevents water from seeping into the soil from the bottom of the lower pipe.

[0011] Preferably, the collecting plate includes a collecting groove horizontally inserted into the interior from the side of the upper pipe. A permeable plate is disposed on the top of the collecting groove, and a gap for water conduction is provided between the permeable plate and the collecting groove. As a preferred embodiment, the inner bottom of the permeable plate is inclined inward, so that rainwater in the gap can flow into the upper pipe along the inclined surface. The permeable plate mentioned in this specification is a common technology in the prior art, and its material and manufacturing process are the same as those of permeable bricks. By setting the permeable plate, moisture in the soil can be filtered into the interior of the permeable plate, thereby collecting rainwater.

[0012] Preferably, the connecting pipe has an opening at its center top, with both sides extending vertically upwards. A horizontally rotatable fixing block is mounted on each extended end via a movable shaft. This arrangement allows the fixing block to rotate around the movable shaft, securing a limiting block to the connecting pipe. The collecting part is inserted into the opening and fits tightly against it. Sealing frames, made of rubber, are provided at both ends of the collecting part and the end of the water storage pipe extending into the connecting pipe. These sealing frames ensure tight contact between the water storage pipe and the collecting part, preventing rainwater from seeping out from the gaps between them. This is a preferred embodiment. In this embodiment, the water storage pipe and the connecting pipe are connected by an insertion joint, and waterproof tape can be placed between the water storage pipe and the connecting pipe to increase the sealing effect between them. A handle is provided on the top of the collecting part, and a limiting block with the same width as the collecting part is provided above the collecting part. The bottom of the limiting block has a groove that fits tightly with the handle. This arrangement uses the groove to cover the handle inside the groove, and the cooperation between the handle and the groove limits the limiting block to prevent it from sliding out of the fixing block. The lower surface of the limiting block is in close contact with the upper surface of the collecting part, and the upper surface of the limiting block is in close contact with the lower surface of the fixing block.

[0013] Preferably, the movable door comprises four triangular plates, each of which is movably mounted to the inner wall of the collecting section via a pivot, and the four triangular plates form a complete movable door. In a preferred embodiment, a spring is provided on the pivot, and the spring force is only sufficient to close the movable door, while the water flow can easily open it.

[0014] Preferably, the cross-section of the water collection channel is an isosceles trapezoidal structure, and a mesh plate is provided at the top opening of the water collection channel. This configuration allows rainwater to be filtered through the mesh plate, preventing large debris from entering the water collection channel and clogging the water storage pipe.

[0015] Preferably, a drain pipe connected to the municipal sewer pipe is provided on one side of the top of the water storage tank. By providing a drain pipe, when the water level in the water storage tank reaches the height of the drain pipe, excess rainwater is discharged to the sewer pipe through the drain pipe, preventing the water storage tank from becoming full and unable to collect rainwater. A flushing pipe connected to the outside is provided on the top of the water storage tank. The flushing pipe facilitates flushing of the bottom of the water storage tank, helps to discharge silt regularly, and prevents silt from accumulating and clumping.

[0016] Preferably, several drip pipes are distributed on both sides of the water supply branch pipe. The drip pipes facilitate irrigation of the greenery on the park grounds.

[0017] Preferably, a water level detection device is provided at the top inner surface of the water storage tank. As a preferred embodiment, this water level detection device is an ultrasonic water level sensor, capable of detecting the water level by emitting ultrasonic waves and measuring the reflection time.

[0018] This utility model provides a modular system for rainwater harvesting in urban blue-green spaces and construction land, which has the following beneficial effects:

[0019] 1. This utility model utilizes a water collection channel to collect rainwater on the land surface and uses a water storage pipe pre-buried in the surface soil of the park land to collect rainwater that has seeped into the land. The combination of the two can greatly improve the rainwater collection efficiency and prevent a large amount of rainwater from seeping away.

[0020] 2. This utility model uses the permeability of the upper half of the water storage pipe and the collection plate to absorb rainwater that has seeped into the soil. At the same time, the water storage pipe can be set in multiple layers, with staggered and intersecting layers. The water storage pipe in the lower layer does not need to be equipped with a connecting pipe with a collection part, which can collect rainwater in multiple layers and avoid a large amount of rainwater seepage and loss.

[0021] 3. This utility model sets up a collection part inside the connecting pipe, and uses the filter screen and movable door in the collection part to collect the garbage in the water storage pipe. At the same time, the collection part located in the surface soil can be freely removed, thereby cleaning the garbage in the water storage pipe.

[0022] 4. This utility model achieves the collection and utilization of rainwater by setting up an irrigation system on the land surface, using a water pump to extract rainwater from the water storage tank, and then dripping the rainwater onto the vegetation on the soil surface through the irrigation system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall layout of this utility model;

[0024] Figure 2 This is a schematic diagram illustrating the installation of the irrigation system of this utility model;

[0025] Figure 3 This is a schematic diagram of the connection of the water storage pipe of this utility model;

[0026] Figure 4 This is a schematic diagram showing the connection between the water storage pipe and the connecting pipe of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the water storage pipe of this utility model;

[0028] Figure 6 This is a cross-sectional view of the water storage pipe of this utility model inside the connecting pipe;

[0029] Figure 7 This is a cross-sectional view of the filter screen of this utility model inside the connecting pipe;

[0030] Figure 8 This is a cross-sectional view of the movable door of this utility model inside the connecting tube.

[0031] In the picture:

[0032] 1. Lower half pipe; 101. Connecting groove; 2. Upper half pipe; 3. Waterproof membrane; 4. Collection plate; 401. Collection trough; 402. Permeable plate; 5. Connecting piece; 6. Connecting pipe; 7. Collection section; 8. Filter screen; 9. Movable door; 10. Sealing frame; 11. Handle; 12. Limiting block; 13. Fixing block; 14. Connecting bend; 15. First water pipe; 16. Pumping pipe; 17. Second water pipe; 18. Main water supply pipe; 19. Branch water supply pipe; 20. Drip pipe; 21. Water pump; 22. Controller; 23. Humidity detection device; 24. Water collection channel; 25. Mesh plate; 26. Drain pipe; 27. Flushing pipe; 28. Water storage tank; 29. ​​Water level detection device. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-8 This utility model provides a modular system for collecting rainwater in urban blue-green spaces and construction land. It consists of a water storage tank 28 buried deep underground and a water storage pipe installed inside the soil. An irrigation system is installed above the water storage pipe and a water collection channel 24 is installed between the gaps in the irrigation system. A humidity monitoring device is installed below the irrigation system and a controller 22 is connected to the end of the humidity monitoring device.

[0035] The end of the water storage pipe is connected to the inner top of the water storage tank 28 through the first water pipe 15. The end of the water storage pipe is provided with a connecting bend 14. The connecting bend 14 and the water storage pipe are fixedly connected by a connecting pipe 6. The connecting bend 14 facilitates changing the direction of the water storage pipe. The center of the connecting pipe 6 is provided with a collection part 7 that can be pulled upward. The collection part 7 is a rectangular structure with open ends. The two ends of the collection part 7 are respectively provided with a filter screen 8 and a movable door 9. The filter screen 8 is located in the downstream direction of the water flow. The water storage pipe is composed of a waterproof lower half pipe 1 and an upper half pipe 2 that can be permeated with water. The upper half pipe 2 is provided with collection plates 4 on both sides for collecting rainwater in the soil.

[0036] The irrigation system includes a main water supply pipe 18. A pumping pipe 16 is provided on one side of the main water supply pipe 18, extending into the bottom of the water storage tank 28. A pumping pump 21 is installed on the pumping pipe 16. The pumping pump 21 is automatically controlled by a controller 22. Several equally spaced branch water supply pipes 19 are connected to the other side of the main water supply pipe 18. A water collection channel 24 is located between the branch water supply pipes 19.

[0037] In this embodiment, the two end faces of the lower half-pipe 1 are provided with rhomboid connecting grooves 101, and the two end faces of the upper half-pipe 2 are provided with rhomboid connecting pieces 5 that are inserted into the connecting grooves 101. The connecting pieces 5 are made of spring sheet material, and a horizontal spring is provided inside the connecting pieces 5. With this configuration, in use, the rhomboid connecting pieces 5 are directly inserted into the connecting grooves 101. The opening at the top of the connecting grooves 101 is used to squeeze the rhomboid connecting pieces 5 and overcome the elastic force of the rhomboid connecting pieces 5 and the spring until the rhomboid connecting pieces 5 are fully inserted into the connecting grooves 101. When fully inserted, the rhomboid connecting pieces 5 and the spring lose the external compression, and the rhomboid connecting pieces 5 return to their original shape and are stuck in the connecting grooves 101, thereby making the upper half-pipe 2 and the lower half-pipe 1 tightly joined together.

[0038] In this embodiment, a waterproof membrane 3 is provided on the inner wall of the lower half-pipe 1. The waterproof membrane 3 can be an adhered plastic film structure or a brushed waterproof paint. By providing the waterproof membrane 3, water is prevented from seeping into the soil from the bottom of the lower half-pipe 1.

[0039] In this embodiment, the collecting plate 4 includes a collecting groove 401 that is horizontally inserted into the interior from the side of the upper pipe 2. A permeable plate 402 is provided on the top of the collecting groove 401, and a gap for water conduction is provided between the permeable plate 402 and the collecting groove 401. In a preferred embodiment, the inner bottom of the permeable plate 402 is inclined inward, so that rainwater in the gap can flow into the upper pipe 2 along the inclined surface. The permeable plate 402 and the upper pipe 2 mentioned in this specification are common technologies in the prior art, and their materials and manufacturing processes are the same as those of permeable bricks. By setting the permeable plate 402, water in the soil can be filtered into the interior of the permeable plate 402, thereby collecting rainwater.

[0040] In this embodiment, the connecting pipe 6 has an opening at its center top, with both sides extending vertically upwards. A horizontally rotatable fixing block 13 is mounted on each of the extended ends via a movable shaft. This arrangement allows the fixing block 13 to rotate around the movable shaft, securing the limiting block 12 to the connecting pipe 6. The collecting part 7 is inserted into the opening and fits tightly against it. Sealing frames 10, made of rubber, are provided at both ends of the collecting part 7 and the end of the water storage pipe extending into the connecting pipe 6. These sealing frames ensure close contact between the water storage pipe and the collecting part 7, preventing rainwater from seeping out through gaps between them. In a preferred embodiment, the water storage pipe and the connecting pipe 6 are interlocked, and a space can be provided between them. Waterproof tape is used to enhance the sealing effect between the water storage pipe and the connecting pipe 6. A handle 11 is provided on the top of the collection part 7, and a limiting block 12 with the same width as the collection part 7 is provided above the collection part 7. In a preferred embodiment, the limiting block 12 is made of a material with a certain degree of elasticity, so that the limiting block 12 can be tightly pressed down on the collection part 7 under the fixation of the fixing block 13, reducing the leakage of rainwater. A groove is provided at the bottom of the limiting block 12 to fit tightly with the handle 11. With this setting, the handle 11 is covered inside the groove, and the cooperation between the handle 11 and the groove limits the limiting block 12, preventing the limiting block 12 from sliding out of the fixing block 13. The lower surface of the limiting block 12 is in close contact with the upper surface of the collection part 7, and the upper surface of the limiting block 12 is in close contact with the lower surface of the fixing block 13.

[0041] In this embodiment, the movable door 9 includes four triangular plates, each of which is movably mounted to the inner wall of the collection section 7 via a pivot, and the four triangular plates form a complete movable door 9. In a preferred embodiment, a spring is provided on the pivot, and the spring force is only sufficient to close the movable door 9, while the water flow can easily open the movable door 9.

[0042] In this embodiment, the cross-section of the water collection channel 24 is an isosceles trapezoidal structure, and a mesh plate 25 is provided at the top opening of the water collection channel 24. This design allows the mesh plate 25 to filter rainwater, preventing large debris from entering the water collection channel 24 and clogging the water storage pipe.

[0043] In this embodiment, a drain pipe 26 connected to the municipal sewer pipe is provided on one side of the top of the water storage tank 28. By providing the drain pipe 26, when the water level in the water storage tank 28 reaches the height of the drain pipe 26, excess rainwater is discharged to the sewer pipe through the drain pipe 26, thus preventing the water storage tank 28 from being full and unable to collect rainwater. A flushing pipe 27 communicating with the outside is provided on the top of the water storage tank 28. By providing the flushing pipe 27, it is convenient to flush the bottom of the water storage tank 28, which helps to discharge silt regularly and prevent silt from accumulating and clumping.

[0044] In this embodiment, several drip pipes 20 are distributed on both sides of the water supply branch pipe 19. The drip pipes 20 facilitate the irrigation of green plants on the park land.

[0045] In this embodiment, a water level detection device 29 is provided on the inner top of the water storage tank 28. As a preferred embodiment, the water level detection device 29 is an ultrasonic water level sensor, which can detect the water level by emitting ultrasonic waves and measuring the reflection time.

[0046] During the construction process, a layer of water storage pipes needs to be laid evenly on the surface of the park land or under the running track (two or more layers can be laid in the southern regions with heavy rainfall, with the multiple layers of water storage pipes staggered and intersecting), and the water storage pipes are arranged at equal intervals. The running track is paved with permeable paving bricks. The ends of the water storage pipes are fixedly connected by connecting pipes 6 (the water storage pipes in the lower layer are connected by general connecting pipes 6 without collection parts 7). An easily openable movable cover is reserved on the surface of the soil or on the running track at the upper connecting pipe 6. The water supply branch pipes 19 and drip pipes 20 of the irrigation system are evenly laid on the vegetation on the surface of the park land. Water collection channels 24 are opened between the water supply branch pipes 19 in the park land and on both sides of the running track.

[0047] When it rains, some rainwater flows through the surface of the land and the track to the collection channel 24. The grid plate 25 performs preliminary filtration of the rainwater, and the collection channel 24 collects the rainwater. Rainwater that seeps into the land and the track is collected through the permeable material on the upper pipe 2 and the collection plate 4. Some of the rainwater that seeps into the land seeps into the storage pipe through the upper pipe 2, and the other part seeps into the collection trough 401 through the permeable plate 402, and flows into the storage pipe along the collection trough 401. The rainwater flows along the storage pipe. When it flows into the uppermost connecting pipe 6, the water flow opens the movable door 9, and the rainwater is filtered again through the filter screen 8. The filtered debris is left in the collection section 7. Then the rainwater flows into the storage tank 28 through the first water pipe 15 and the second water pipe 17 for storage. When the water level in the storage tank 28 reaches the height of the drain pipe 26, the excess rainwater is discharged into the municipal pipeline through the drain pipe 26.

[0048] The humidity detection device 23 continuously monitors the humidity of the park soil. When the humidity reaches a certain critical value, the humidity detection device 23 sends a signal to the controller 22. After receiving the signal, the controller 22 controls the water pump 21 to be turned on. The water pump 21 and the water pipe 16 are used to pump out the rainwater in the water storage tank 28 and use the irrigation system to drip irrigate the vegetation in the park. At the same time, the water level detection device 29 continuously monitors the water level in the water storage tank 28 to facilitate the continuous observation of the water level in the water storage tank 28.

[0049] Every so often, open the movable cover reserved on the park land and running track, rotate the fixing block 13, remove the limiting block 12, and lift out the collection part 7 through the handle 11. This makes it easy to clean the garbage in the collection part 7 regularly and prevent the water storage pipe from getting blocked. For the water storage pipe located in the lower layer or the upper layer where it is inconvenient to open the movable cover, use the ordinary connecting pipe 6 without the collection part 7 to avoid the collection part 7 in the water storage pipe being unable to be removed, which would increase the possibility of garbage blocking the pipe.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular system for rainwater harvesting in urban blue-green spaces and built-up land, characterized in that: It includes a water storage tank (28) buried deep underground, and a water storage pipe set inside the soil. An irrigation system is laid on the ground above the water storage pipe. Water collection channels (24) are set between the gaps of the irrigation system. A humidity monitoring device is set below the irrigation system. A controller (22) is connected to the end of the humidity monitoring device. The end of the water storage pipe is connected to the inner top of the water storage tank (28) through the first water pipe (15). The end of the water storage pipe is provided with a connecting bend (14). The connecting bend (14) and the water storage pipe are fixedly connected by a connecting pipe (6). The center of the connecting pipe (6) is provided with a collection part (7) that can be pulled upward. The collection part (7) is a rectangular structure with open ends. The two ends of the collection part (7) are respectively provided with a filter screen (8) and a movable door (9). The filter screen (8) is located in the downstream direction of the water flow. The water storage pipe is spliced ​​from a waterproof lower half pipe (1) and an upper half pipe (2) that can permeate water. The upper half pipe (2) is provided with collection plates (4) on both sides for collecting rainwater in the soil. The irrigation system includes a main water supply pipe (18), on one side of which is a pumping pipe (16) extending into the bottom of the water storage tank (28), and a pumping pump (21) is installed on the pumping pipe (16). The pumping pump (21) is automatically controlled by the controller (22). On the other side of the main water supply pipe (18) are connected several equally spaced branch water supply pipes (19), and the water collection channel (24) is located between the branch water supply pipes (19).

2. The modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The two end faces of the lower half-pipe (1) are provided with rhomboid connecting grooves (101), and the two end faces of the upper half-pipe (2) are provided with rhomboid connecting parts (5) that are inserted into the connecting grooves (101). The connecting parts (5) are made of spring sheet material, and a horizontal spring is provided inside the connecting parts (5).

3. The modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The inner wall of the lower half-pipe (1) is provided with a waterproof membrane (3).

4. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The collecting plate (4) includes a collecting groove (401) that is horizontally inserted into the inside from the side of the upper pipe (2). A permeation plate (402) is provided on the top of the collecting groove (401), and a gap for guiding water is provided between the permeation plate (402) and the collecting groove (401).

5. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The connecting pipe (6) has an opening at its center top. Both sides of the opening extend vertically upwards, and the extended ends are fitted with horizontally rotatable fixing blocks (13) via movable shafts. The collecting part (7) is inserted into the opening and fits tightly against it. Both ends of the collecting part (7) and the ends of the water storage pipes that extend into the connecting pipe (6) are fitted with sealing frames (10). The top of the collecting part (7) is fitted with a handle (11). Above the collecting part (7) is a limiting block (12) of the same width as the collecting part (7). The bottom of the limiting block (12) has a groove that fits tightly against the handle (11). The lower surface of the limiting block (12) is in close contact with the upper surface of the collecting part (7), and the upper surface of the limiting block (12) is in close contact with the lower surface of the fixing block (13).

6. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The movable door (9) includes four triangular plates, each of which is movably installed on the inner wall of the collection part (7) via a pivot, and the four triangular plates form a complete movable door (9).

7. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The cross-section of the water collection channel (24) is an isosceles trapezoidal structure, and a grid plate (25) is provided at the top opening of the water collection channel (24).

8. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: A drain pipe (26) connected to the municipal sewer pipe is provided on one side of the top of the water storage tank (28), and a flushing pipe (27) communicating with the outside is provided on the top of the water storage tank (28).

9. A modular system for rainwater harvesting in urban blue-green spaces and built-up land according to claim 1, characterized in that: Several drip pipes (20) are distributed on both sides of the water supply branch pipe (19).

10. A modular system for rainwater harvesting in urban blue-green spaces and construction land according to claim 1, characterized in that: The water storage tank (28) is equipped with a water level detection device (29) on its inner top.

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