Rainwater energy-dissipation comprehensive well capable of disconnecting water storage

By integrating the energy dissipation well and the overflow well into a single rainwater energy dissipation integrated well, the problem of the inability to combine the energy dissipation well and the overflow well in the disconnection of rainwater downpipes on the roof of high-rise buildings is solved. This achieves efficient rainwater storage and infiltration, simplifies the construction process, and improves the efficiency and aesthetics of urban rainwater management.

CN224300130UActive Publication Date: 2026-05-29FUJIAN JIANYAN INVESTIGATION DESIGNING INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN JIANYAN INVESTIGATION DESIGNING INST
Filing Date
2025-03-31
Publication Date
2026-05-29

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Abstract

The utility model discloses a rainwater energy dissipation comprehensive well that can cut off and store water, which comprises a water storage well, an energy dissipation layer, an overflow pipe and a water storage and retention facility. The device integrates the energy dissipation well and the overflow well into one, forming a new well structure. During heavy rain, the energy dissipation layer can buffer high-level rainwater, and the rainwater can be discharged to the ground water storage and retention facility through the drainage port, effectively storing water. At the same time, the water-permeable layer can also infiltrate the rainwater to supplement the soil layer, achieving the function of energy dissipation and water storage. The device also has an overflow pipe. When the water storage well is full of water, the overflow pipe can discharge rainwater exceeding the set water level to the municipal rainwater pipeline. The overflow pipe can also adjust different overflow water levels, and the overflow mode is more diversified. One well can meet various different needs, can store water and can automatically discharge water, and completely utilizes the water level for automatic adjustment, belonging to a more suitable modern community water conservancy facility.
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Description

Technical Field

[0001] This utility model relates to the field of building drainage technology, and in particular to a rainwater energy dissipation integrated well that can disconnect and store water. Background Technology

[0002] In recent years, sponge cities have become a commonly used stormwater management system and have been widely promoted.

[0003] This concept of "sponge city" aims to achieve ecological balance and protection during urbanization. Sponge city construction can enhance urban natural ecological functions, restore urban water cycle systems, and realize sustainable urban development. Sponge city construction relies on infiltration, retention, storage, purification, utilization, and drainage. In residential communities, the most crucial aspect is rainwater disconnection. Rainwater disconnection refers to cutting off runoff discharge channels through certain means or structures, directing rainwater to rainwater storage facilities, such as sunken green spaces and bioretention facilities. Rainwater entering the rainwater storage facilities naturally infiltrates into the soil to replenish groundwater. Rainwater exceeding the storage capacity is then discharged into the site's rainwater pipe network through overflow outlets within the rainwater storage facilities.

[0004] For roof downpipe disconnections, especially in high-rise buildings, the rainwater from a large area of ​​the roof is collected and then discharged into energy dissipation wells or overflow wells for retention and storage, allowing the water to infiltrate naturally. This type of disconnection results in a high water flow velocity and a large flow rate per unit time. Therefore, it is necessary to pay attention to the erosion and damage to vegetation caused by the disconnected rainwater. Energy dissipation measures should be implemented at the downpipe disconnections to reduce the impact on vegetation erosion.

[0005] Currently, to dissipate rainwater from high-rise buildings, separate energy dissipation wells are needed for buffering. The rainwater then infiltrates naturally through the wells. However, when the storage capacity is exceeded, the rainwater overflows from the cover plate. Therefore, a mesh plate needs to be installed on top of the energy dissipation well to maintain its connection with the external environment. This necessitates the installation of an overflow well next to the well in the building environment to drain the overflowing rainwater. Generally, such wells need to be installed in the green soil to facilitate rainwater infiltration. This results in an overflow well next to an energy dissipation well in the green belt, which is not only troublesome to construct but also affects the aesthetics due to the large number of well covers.

[0006] Energy dissipation wells need to store water, while overflow wells need to drain water as quickly as possible and connect to the municipal stormwater drainage network. This means that these two different types of wells cannot be combined into one, which causes problems for urban construction.

[0007] Based on this, this utility model designs a rainwater energy dissipation integrated well that can disconnect and store water to solve the above problems. Utility Model Content

[0008] The purpose of this invention is to provide a rainwater energy dissipation integrated well capable of disconnecting and storing water. This device combines an energy dissipation well and an overflow well into one unit, forming a new well structure. During heavy rain, it can buffer rainwater from high-rise buildings through an energy dissipation layer and discharge overflowing water into ground-level storage facilities through a drainage outlet, effectively storing water. At the same time, it can also allow rainwater to infiltrate into the soil layer through a permeable layer, achieving the function of an energy dissipation well. This device also includes an overflow pipe, which can discharge rainwater exceeding the set water level into the municipal rainwater pipe when the water storage well is full. This device has more overflow methods and solves multiple different needs with one well. It is completely self-adjusting by utilizing the water level, and belongs to modern community water conservancy facilities that can both store water and drain water automatically.

[0009] This utility model is implemented as follows: a rainwater energy dissipation integrated well capable of disconnection and water storage, comprising:

[0010] Water storage wells, energy dissipation layers, overflow pipes, and water storage facilities;

[0011] The water storage well is a closed pit with an opening at the top. The water storage well protrudes above the ground. Multiple drainage outlets are opened on the side wall of the water storage well. The outside of the drainage outlets is flush with the ground. The top opening of the water storage well is covered with a well cover, which is a closed flat plate.

[0012] The inner cavity of the water storage well is also connected to a rainwater drain pipe. The inlet of the rainwater drain pipe is connected to the rainwater pipe on the roof of the building, and the outlet of the rainwater drain pipe is located in the inner cavity of the water storage well.

[0013] The bottom of the inner cavity of the water storage well is also lined with an energy dissipation layer and a permeable layer, both of which cover the bottom of the inner cavity of the water storage well, with the energy dissipation layer covering the permeable layer.

[0014] The rainwater drain pipe is located at a height below the drain outlet;

[0015] The overflow pipe is a bend, and the inlet end of the overflow pipe is vertically installed inside the water storage well. The outlet of the overflow pipe is connected to the municipal rainwater pipe. A plug sleeve is sealed on the inlet of the overflow pipe, and the top opening of the plug sleeve is located at the height below the rainwater pipe.

[0016] The upper end of the plug sleeve is vertically inserted with a connecting pipe;

[0017] An adjusting pipe is threaded onto the upper end of the connecting pipe. The adjusting pipe is installed inside the connecting pipe and can be raised and lowered by the thread. The adjusting pipe is located below the manhole cover. The top opening of the connecting pipe is located above the rain drain pipe.

[0018] The water storage well is covered by a water storage and retention facility, which is located below the height of the drainage outlet.

[0019] Furthermore, the water storage well is a sealed pit well constructed of bricks;

[0020] The water storage well has openings at both the top and bottom, with the bottom opening communicating with the underground soil.

[0021] The energy dissipation layer is a pebble layer, and the permeable layer is a permeable base soil.

[0022] Furthermore, the drain outlet is covered with a filter screen, and the maximum mesh spacing of the filter screen is less than 2cm.

[0023] Furthermore, the insert sleeve and the connecting pipe are separate structures, the insert sleeve and the connecting pipe are interference fit, and the insert sleeve and the connecting pipe maintain a seal during insertion;

[0024] The overflow pipe, connecting pipe, and regulating pipe are all PVC water pipes;

[0025] The plug sleeve is a water pipe plug connector.

[0026] Furthermore, the storage and retention facility is a sponge rainwater storage module, and the storage and retention facility is located below a water-retaining soil body.

[0027] The beneficial effects of this utility model are: 1. This utility model adds a water storage well, and the bottom is not covered with waterproof wrapping, so as to achieve the purpose of water infiltration as soon as possible. The construction of this structure is more convenient. It is only necessary to build a water storage well, and then lay an energy dissipation layer and a permeable layer at the bottom to complete the construction. The structure is simple, water storage is convenient, and water infiltration capacity is strong. Moreover, the energy dissipation layer is located directly below the building's rainwater drainage pipe outlet, which can not only block the impact of rainwater, but also store and infiltrate water through the permeable layer.

[0028] 2. This device adds an overflow pipe to the water storage well. The same water storage well contains both a drain pipe and an overflow pipe. The overflow pipe is sealed with a regulating pipe and a connecting pipe. This ensures that when the water level inside the water storage well is high, the water will flow into the municipal pipeline through the overflow pipe, which can automatically discharge the water. At the same time, a drain outlet is added to the water storage well. The drain outlet is above the ground, so that the ground storage and retention facilities can store the water overflowing from the water storage well, achieving the purpose of urban water storage. Finally, water exceeding the storage and retention range is discharged through the overflow pipe.

[0029] 3. The overflow pipe is composed of three interconnected structures. Through the design of the connecting pipe, the overflow pipe can be opened directly, so that the top of the overflow pipe opening is below the rainwater pipe, achieving the purpose of rapid drainage. By cooperating with the regulating pipe and the connecting pipe, the height of the top opening of the regulating pipe can be changed, thereby achieving the purpose of regulating the overflow water level. That is, when the regulating pipe opening is raised, the overflow water level becomes higher, and by lowering the height of the regulating pipe, the water flow at the lower water level can be drained. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the water storage well of this utility model;

[0033] Figure 3 This is a schematic diagram of the other side of the water storage well of this utility model;

[0034] Figure 4 This is a top view of the internal structure of the water storage well of this utility model;

[0035] Figure 5 This is a schematic diagram showing the disassembled structure of the overflow pipe, connecting pipe, and regulating pipe of this utility model.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1-Water storage well, 11-Drain outlet, 12-Rain drain pipe, 13-Well cover, 2-Energy dissipation layer, 21-Permeable layer, 3-Overflow pipe, 31-Connecting pipe, 32-Regulating pipe, 33-Plug-in sleeve, 4-Storage and retention facilities. Detailed Implementation

[0038] Please see Figures 1 to 5 As shown, this utility model provides a rainwater energy dissipation integrated well that can disconnect and store water. In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] In a specific embodiment of the technical solution of this utility model:

[0040] It includes a water storage well 1, an energy dissipation layer 2, an overflow pipe 3, and a storage and retention facility 4;

[0041] The water storage well 1 is a closed pit with an open top, protruding above the ground. Multiple drainage outlets 11 are opened on the side wall of the water storage well 1, flush with the ground outside the outlets 11. Each outlet 11 is covered with a filter screen, the maximum mesh size of which is less than 2cm. The filter screen effectively prevents fallen leaves from flowing into the water storage well, thus contributing to the smooth flow of the pipes. Water can flow bidirectionally through the drainage outlets 11. When the water level inside the water storage well 1 is high, water flows out through the drainage outlets 11; conversely, when the external water level is high, water flows back into the water storage well 1 through the drainage outlets 11, and then is discharged into the municipal pipe network via the regulating pipe 32 and the overflow pipe 3.

[0042] The top opening of the water storage well 1 is covered by a well cover 13. The well cover 13 is a closed flat plate, and the well cover 13 can be flipped open or moved horizontally. When it is closed, it should be kept as sealed as possible. It does not need to be too strong. It is enough to just press it closed. The commonly used closed flat plate well cover 13 can meet the sealing requirements. The well cover 13 can easily open the water storage well 1 to adjust the regulating pipe 32 and the connecting pipe 31, and can also facilitate the maintenance and sludge removal inside the water storage well 1.

[0043] The inner cavity of the water storage well 1 is also connected to the rainwater pipe 12. The inlet of the rainwater pipe 12 is connected to the rainwater pipe on the roof of the building, and the outlet of the rainwater pipe 12 is located in the inner cavity of the water storage well 1.

[0044] The bottom of the inner cavity of the water storage well 1 is also lined with an energy dissipation layer 2 and a permeable layer 21. Both the energy dissipation layer 2 and the permeable layer 21 cover the bottom of the inner cavity of the water storage well 1, and the energy dissipation layer 2 is laid on top of the permeable layer 21. The water storage well 1 is a sealed pit well made of brick.

[0045] The water storage well 1 has openings at both the top and bottom, with the bottom opening of the water storage well 1 connected to the underground soil.

[0046] The energy dissipation layer 2 is a pebble layer, which achieves the purpose of energy dissipation and prevents the soil layer from being washed away by the downward impact of rainwater with high potential energy. The permeable layer 21 is a permeable base soil, which facilitates the faster infiltration of water stored in the water storage well 1 and achieves the purpose of water storage in the soil layer.

[0047] The rainwater drain pipe 12 is positioned below the drain outlet 11, allowing the water flowing into the water storage well 1 to be stored and seeped in instead of being discharged, thus enabling the device to achieve a water storage effect.

[0048] The overflow pipe 3 is a bend. The inlet end of the overflow pipe 3 is vertically installed inside the water storage well 1. The outlet of the overflow pipe 3 is connected to the municipal rainwater pipe. The inlet of the overflow pipe 3 is sealed with a plug sleeve 33. The top opening of the plug sleeve 33 is located at the height below the rainwater pipe 12.

[0049] The upper end of the insertion sleeve 33 is vertically inserted with the connecting tube 31;

[0050] An adjusting pipe 32 is installed on the upper end of the connecting pipe 31 by threads. The adjusting pipe 32 is installed inside the connecting pipe 31 by threads that can be raised and lowered. The adjusting pipe 32 is located below the manhole cover 13. The top opening of the connecting pipe 31 is located at the height above the rain drain pipe 12, ensuring that rainwater from the roof will not flow into the overflow pipe 3 under normal conditions, but will instead seep into the ground through the water storage well 1 and be absorbed by the storage facility 4.

[0051] The insert sleeve 33 and the connecting pipe 31 are separate structures. The insert sleeve 33 and the connecting pipe 31 are interference fit. The insert sleeve 33 and the connecting pipe 31 are sealed when inserted.

[0052] Overflow pipe 3, connecting pipe 31, and regulating pipe 32 are all PVC water pipes;

[0053] The plug sleeve 33 is a water pipe plug connector. These installation methods are designed so that when rapid drainage is needed, the connecting pipe 31 can be pulled out to expose the top opening of the overflow pipe 3, thereby achieving a rapid drainage effect. If the overflow water level needs to be adjusted, the mating height between the pipe 32 and the connecting pipe 31 can be adjusted by turning the knob. As long as the water level exceeds the top opening of the adjusting pipe 32, the water will flow into the overflow pipe 3, achieving the purpose of drainage. Thus, the overflow water level can be changed by adjusting the pipe 32, making it convenient to use.

[0054] The water storage well 1 is covered by a water storage and retention facility 4, which is located at a height lower than the drainage outlet 11.

[0055] The storage and retention facility 4 is a sponge rainwater storage module, and the soil below the storage and retention facility 4 is a water-retaining soil, which effectively improves the water storage capacity around the building.

[0056] It should be noted that:

[0057] If energy dissipation wells and overflow wells are combined into one unit, the rainwater collected by the energy dissipation well will be quickly discharged by the overflow well, failing to achieve the purpose of storing and infiltrating rainwater for reuse. Currently, these two types of wells cannot be used together. Furthermore, since energy dissipation wells only overflow when there is excessive rainwater, they need to be drained as soon as possible. This results in an overflow well usually being placed next to the energy dissipation well, leading to numerous manhole covers and inconvenience. The construction methods and principles of the two types of wells are also completely different. This device combines the two types of wells into one unit, which can both store rainwater and discharge excess rainwater. It achieves this entirely through the pipe network structure, without the installation of other water valves or electrical circuits. This makes it more reliable and safer during heavy rain, eliminating the risk of electrical damage or electric shock due to rainwater.

[0058] When this utility model is in use, rainwater from the building roof flows into the water storage well 1 through the rainwater drain pipe 12, and the potential energy is buffered by the energy dissipation layer 2. The rainwater is stored in the water storage well 1 and infiltrates into the soil layer below through the permeable layer 21, so as to achieve effective utilization of rainwater. It directly infiltrates to the lower soil layer, effectively avoiding the soil layer above from becoming wet while the soil below remains dry, and ensuring that the rainwater is fully stored and utilized.

[0059] When the water flow is too large and the water level rises until it exceeds the drain outlet 11, the water flow is discharged from the water storage well 1 to the external storage and retention facility 4, where it is stored.

[0060] If the water level continues to rise and the external ground water level is already high enough to prevent water from being stored, it indicates that the water storage capacity near the building has exceeded its capacity and drainage is necessary.

[0061] Until the water level exceeds the top opening of the regulating pipe 32, the water will flow through the regulating pipe 32 and the connecting pipe 31 into the overflow pipe 3, and then quickly discharged into the municipal pipe network through the overflow pipe 3 to achieve the purpose of flood discharge.

[0062] If the overflow pipe 3 is kept dry for a long time, it may become clogged. The connecting pipe 31 can be manually pulled out, and the plug sleeve 33 is located below the rain drain pipe 12. Rainwater will quickly rush into the overflow pipe 3 for flushing. Alternatively, the connecting pipe 31 can be pulled out for other operations.

[0063] The height of the regulating pipe 32 can be adjusted by rotating it within the connecting pipe 31. This height position is the overflow water level line, which is convenient to use, easy to adjust, and more flexible in use.

[0064] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A rainwater energy dissipation integrated well capable of disconnection and water storage, characterized in that, include: Water storage well (1), energy dissipation layer (2), overflow pipe (3) and storage and stagnation facilities (4); The water storage well (1) is a closed pit with an open top. The water storage well (1) protrudes above the ground. Multiple drainage outlets (11) are opened on the side wall of the water storage well (1). The drainage outlets (11) are flush with the ground outside. The top opening of the water storage well (1) is covered with a well cover (13). The well cover (13) is a closed flat plate. The inner cavity of the water storage well (1) is also connected to a rainwater drain pipe (12). The inlet of the rainwater drain pipe (12) is connected to the rainwater pipe on the top of the building, and the outlet of the rainwater drain pipe (12) is located in the inner cavity of the water storage well (1). The bottom of the inner cavity of the water storage well (1) is also covered with an energy dissipation layer (2) and a permeable layer (21). The energy dissipation layer (2) and the permeable layer (21) cover the bottom of the inner cavity of the water storage well (1). The energy dissipation layer (2) is laid on top of the permeable layer (21). The rain drain pipe (12) is located at a height below the drain outlet (11); The overflow pipe (3) is a bend. The inlet of the overflow pipe (3) is vertically installed inside the water storage well (1). The outlet of the overflow pipe (3) is connected to the municipal rainwater drainage pipe. A plug sleeve (33) is sealed on the inlet of the overflow pipe (3). The top opening of the plug sleeve (33) is located at a height below the rainwater drainage pipe (12). The upper end of the insertion sleeve (33) is vertically inserted with the connecting pipe (31). The upper end of the connecting pipe (31) is fitted with an adjusting pipe (32) by threads. The adjusting pipe (32) is installed inside the connecting pipe (31) by threads and can be raised and lowered. The adjusting pipe (32) is located below the manhole cover (13). The top opening of the connecting pipe (31) is located above the rain drain pipe (12). The water storage well (1) is covered by a storage and retention facility (4), which is located at a height lower than the drain outlet (11).

2. The rainwater energy dissipation integrated well capable of disconnection and water storage according to claim 1, characterized in that: The water storage well (1) is a sealed pit well made of brick; The water storage well (1) has openings at both the top and bottom, and the lower opening of the water storage well (1) is connected to the underground soil. The energy dissipation layer (2) is a pebble layer, and the permeable layer (21) is a permeable base soil.

3. A rainwater energy dissipation integrated well capable of disconnection and water storage according to claim 1, characterized in that: The drain outlet (11) is covered with a filter screen, and the maximum hole spacing of the filter screen is less than 2cm.

4. A rainwater energy dissipation integrated well capable of disconnection and water storage according to claim 1, characterized in that: The insert sleeve (33) and the connecting pipe (31) are separate structures. The insert sleeve (33) and the connecting pipe (31) are interference fit. The insert sleeve (33) and the connecting pipe (31) are sealed when inserted. The overflow pipe (3), the connecting pipe (31), and the regulating pipe (32) are all PVC water pipes; The plug sleeve (33) is a water pipe plug connector.

5. A rainwater energy dissipation integrated well capable of disconnection and water storage according to claim 1, characterized in that: The storage and retention facility (4) is a sponge rainwater storage module, and the storage and retention facility (4) is located below the water storage soil.