Hidden drainage device with water storage function
By designing concealed drainage devices and combining them with road modules and water storage modules, the problems of rainwater retention and aesthetics in sponge cities have been solved, achieving efficient rainwater retention and infiltration, and improving the efficiency and aesthetics of urban drainage systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-17
AI Technical Summary
Existing urban drainage facilities are unable to simultaneously meet the needs of rainwater retention and aesthetic appeal in the construction of sponge cities, and linear drainage ditches affect the runoff control and pollution control effects of sponge facilities.
Design a concealed drainage device with water storage function, including a road module, a retention module and a water storage module. The retention module is used to temporarily store rainwater, and the water storage module is connected to the retention module through a permeable layer and hidden under the ground to achieve rainwater retention and infiltration. The overflow component is used to discharge excess water.
It improves the city's rainwater retention capacity, enhances the aesthetic appeal of the landscape, reduces the risk of road flooding, and improves road safety and facility stability.
Smart Images
Figure CN224002053U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage facilities technology, and in particular to a concealed drainage device with water storage function. Background Technology
[0002] Currently, most urban drainage systems in my country primarily employ a direct discharge method: ditch-rainwater inlet-pipeline (pumping station)-collecting water body. The difference between sponge city and ordinary urban construction lies in the rational control of rainwater runoff on the urban surface, enabling on-site absorption, retention, and utilization of rainwater. The most widely used related facilities are sunken green spaces and rain gardens. However, the excessive rainwater discharge from these facilities currently mainly occurs through overflow outlets at lower levels into municipal stormwater pipes. The standard overflow outlet designs often fail to meet aesthetic requirements and lack concealment, contradicting the high-standard sponge city construction goals of premium and landscape sponge cities.
[0003] Furthermore, because linear drainage ditches are often installed before sunken green spaces and other rainwater retention facilities, most runoff is intercepted by these ditches, preventing sponge city facilities from effectively controlling runoff within their catchment areas. Simultaneously, runoff pollution remains uncontrolled, hindering the functions of retention, storage, and purification inherent in sponge city systems. Therefore, there is an urgent need to design a drainage system that meets both the rainwater retention requirements of sponge cities and aesthetic needs. Utility Model Content
[0004] The main purpose of this invention is to propose a concealed drainage device with water storage function, aiming to solve the technical problem of how to improve the city's rainwater retention effect while satisfying the aesthetic requirements of the urban landscape.
[0005] To achieve the above objectives, this utility model proposes a concealed drainage device with water storage function, comprising:
[0006] A road module includes a road surface paving and a paving sub-layer arranged sequentially in a vertical direction, wherein the road surface paving covers the top of the paving sub-layer.
[0007] A retention module is provided on one side of the road module, and the highest point of the retention module is lower than the lowest point of the road surface paving.
[0008] A water storage module is connected to one side of the retention module. The water storage module includes a concrete masonry component and a permeable layer at the bottom of the concrete masonry component. The concrete masonry component is provided with a water storage chamber and a water inlet communicating with the water storage chamber. The water storage module also includes an overflow component provided in the water storage chamber. The top of the overflow component is lower than the lowest point of the water inlet, and the overflow component is configured to open when the water storage chamber is full of water to discharge the remaining water.
[0009] Wherein, the highest point of the retention module is not lower than the lowest point of the inlet and not higher than the highest point of the inlet, and at least a portion of the permeable layer is in contact with the retention module.
[0010] In some embodiments, the road module further includes a first compacted layer disposed below the paving subbase, wherein the top of the permeable layer is lower than the top of the first compacted layer.
[0011] In some embodiments, the water storage module further includes a second compacted layer disposed below the permeable layer, and the overflow component includes an overflow port, an overflow pipe communicating with the overflow port, and a drain pipe communicating with the overflow pipe. The drain pipe is disposed below or within the second compacted layer, and the overflow pipe penetrates the permeable layer and communicates with the drain pipe.
[0012] In some embodiments, the water storage module further includes a first cover plate and a second cover plate connected to the top of the concrete masonry member. The first cover plate and the second cover plate are alternately and spaced apart along the horizontal direction. The first cover plate is configured to rotate relative to the concrete masonry member to expose the water storage chamber, and the second cover plate is fixedly connected to the concrete masonry member.
[0013] In some embodiments, the highest point of the first cover plate and the second cover plate is not higher than the lowest point of the road surface paving.
[0014] In some embodiments, the concrete masonry component includes a main body and a support portion, wherein one side of the support portion is connected to the side of the main body near the water storage chamber along the horizontal direction, and the top of the support portion is connected to the second cover plate.
[0015] In some embodiments, the water storage module further includes a protective grille that covers the water inlet.
[0016] In some embodiments, the water storage module includes a plurality of overflow components arranged at intervals along the horizontal direction, with the spacing between adjacent overflow components being 0.8 to 2.2 m.
[0017] In some embodiments, the permeability of the permeable layer is sufficient to drain the water stored in the water storage chamber within 24 hours.
[0018] In some embodiments, the water storage module is located between the road module and the retention module.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] In this invention, the water storage module is connected to one side of the retention module. Compared to related technologies that bury a water storage chamber beneath the bioretention soil layer to retain urban rainwater, the water storage module in this application does not interfere with the retention module and thus does not affect its ability to absorb and retain rainwater. Furthermore, the highest point of the retention module is neither lower than the lowest point of the inlet nor higher than the highest point of the inlet. Therefore, rainwater exceeding the retention module's capacity can be stored in the water storage module through the inlet, preventing rainwater from flowing back into the road module. In addition, at least a portion of the permeable layer at the bottom of the concrete masonry component contacts the retention module. Thus, rainwater entering the water storage module can permeate back into the retention module through the permeable layer, compensating for the inability of rainwater to completely penetrate the retention module in a short time and further improving its rainwater retention effect. Simultaneously, the water storage module of this application is hidden underground, effectively improving the aesthetics of the urban landscape. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0022] Figure 1 This is a top view of a concealed drainage device with water storage function in one embodiment of the present invention;
[0023] Figure 2 In one embodiment of this utility model, a concealed drainage device with water storage function is provided along... Figure 1 A sectional view taken along the AA direction.
[0024] Explanation of icon numbers:
[0025] A concealed drainage device 100 with water storage function;
[0026] Road module 110;
[0027] Road surface paving 111; Paving subbase 112; First compacted layer 113; Second compacted layer 114;
[0028] Module 120 is stuck.
[0029] Water storage module 130;
[0030] Concrete masonry component 131; water storage chamber 1311; water inlet 1312; main body 1313; support component 1314;
[0031] Permeable layer 132;
[0032] Overflow component 133; Overflow port 1331; Overflow pipe 1332;
[0033] First cover plate 134; Second cover plate 135;
[0034] Protective grille 136.
[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0037] In the construction of sponge cities, the peak time of rainwater net flow is delayed by "delaying" to reduce drainage intensity and alleviate the risk of urban flooding; the construction of "storage" can reduce the peak flow of rainfall and create conditions for rainwater utilization; and the construction of "purification" can make full use of soil, vegetation and green space systems to reduce non-point source pollution and improve the urban water environment.
[0038] In urban construction, to fully utilize rainwater resources and reduce water pollution control costs, related technologies typically involve burying water storage chambers beneath bioretaining soil layers. These chambers are connected to the outside via wells that penetrate the bioretaining soil layer, allowing rainwater to enter and be stored. However, this applicant has discovered that burying water storage chambers beneath bioretaining soil layers severely hinders the infiltration and retention of rainwater. While wells are usually located at the lowest point of the bioretaining soil layer to facilitate rainwater flow, in heavy rainfall, the bioretaining soil layer collects large amounts of rainwater. This rainwater may not have fully infiltrated the soil before entering the storage chamber through the wells, severely impacting the retention effect of the bioretaining soil layer. Furthermore, exposed wells significantly detract from the aesthetics of the urban landscape and even pose certain safety risks.
[0039] In view of this, please refer to Figure 1 and Figure 2This utility model provides a concealed drainage device 100 with water storage function, including a road module 110, a retention module 120, and a water storage module 130. The road module 110 includes a road surface paving 111 and a paving sub-layer 112, wherein the road surface paving 111 covers the paving sub-layer 112, providing passage for vehicles and pedestrians. The top of the retention module 120 is configured as a green space (planted with trees and other vegetation) located on one side of the road module 110, and its highest point is lower than the lowest point of the road surface paving 111. This means that water can flow smoothly into the retention module 120 and be temporarily stored in the retention module 120, preventing road surface water from affecting traffic. The water storage module 130 is connected to one side of the retention module 120 (the water storage module 130 can be located between the road module 110 and the retention module 120, or the water storage module 130 can be located on the side of the retention module 120 away from the road module 110. In other embodiments, the water storage module 130 is located between the retention module 120 and the road module 110, and on the side of the retention module 120 away from the road module 110). Therefore, the water storage module 130 will not interfere with the retention module 120 and affect the absorption and retention effect of the retention module 120 on rainwater. The water storage module 130 includes a concrete masonry component 131 and a permeable layer 132 located at the bottom of the concrete masonry component 131. A water storage chamber 1311 is formed inside the concrete masonry component 131, and an inlet 1312 communicating with the water storage chamber 1311 is provided inside the water storage chamber 1311. In addition, the water storage module 130 also includes an overflow component 133 disposed within the water storage chamber 1311. The top of the overflow component 133 is lower than the lowest point of the inlet 1312 to prevent excessive rainwater in the water storage chamber 1311 from flowing back from the inlet 1312 to the retention module 120. When the water storage chamber 1311 is full, the overflow component 133 will open to discharge excess water in the water storage chamber 1311 through the overflow channel. The highest point of the retention module 120 is neither lower than the lowest point of the inlet 1312 nor higher than the highest point of the inlet 1312 to ensure that water can flow smoothly into the water storage chamber 1311. The permeable layer 132 is in contact with a portion of the retention module 120 to ensure that water can pass through the permeable layer 132 into the retention module 120, thereby improving the infiltration efficiency of rainwater in the retention layer. In other embodiments, the permeable layer 132 can also allow excess water that has seeped into the retention module 120 to flow into the water storage chamber 1311 through the permeable layer 132, thus preventing excessive water content in the retention module 120 from affecting the health of the organisms in the retention module 120.
[0040] Specifically, when rainwater or other water sources flow into the retention module 120, because the highest point of the retention module 120 is lower than the lowest point of the road pavement 111, the water is guided to the water storage module 130. The inlet 1312 in the water storage module 130 allows water to flow into the storage chamber 1311, which can temporarily store a certain amount of water. When the stored water reaches a certain level, the overflow component 133 starts operating, and excess water is discharged through the overflow component 133, thereby avoiding the impact of excessive water accumulation on the road surface. The presence of the permeable layer 132 improves the infiltration efficiency of rainwater in the retention module 120, thus achieving effective utilization of surface water resources, reducing the possibility of road surface flooding, and improving the safety and comfort of road use.
[0041] To further enhance the water storage module 130's water storage and drainage functions and improve the efficiency and reliability of the entire drainage system, it is understood that in some embodiments, the road module 110 is not limited to the two-layer structure mentioned above, but may include more layers to enhance the stability and durability of the road. The permeability parameters of the permeable layer 132 can be adjusted according to actual conditions (in some embodiments, the permeability performance of the permeable layer 132 can be set according to the permeability of the retention module 120, so that the permeable layer 132 can be used to increase the permeability of rainwater to the retention module 120 or to assist the inlet 1312 in obtaining excess water from the retention module 120. In other embodiments, the permeable layer 132 can also be configured to have bidirectional permeability, that is, rainwater can permeate from the water storage chamber 1311 to the retention module 120, and water in the retention module 120 can also permeate into the water storage chamber 1311, so that the water in the retention module 120 can be maintained within a certain range to ensure the growth of organisms in the retention module 120), to ensure that its permeability performance meets expectations. For example, the material selection of the permeable layer 132 can use porous concrete or other highly permeable materials to ensure that water in the water storage chamber 1311 can permeate to the retention module 120 in a short time, avoiding problems such as water quality changes caused by long-term water accumulation. In addition, the specific location and shape of the overflow component 133 can be adjusted according to actual needs to adapt to different terrain conditions and drainage requirements.
[0042] Please see Figure 2In some embodiments, the road module 110 further includes a first compacted layer 113 laid beneath the pavement sublayer 112, with the top of the permeable layer 132 lower than the top of the first compacted layer 113. The first compacted layer 113 increases the foundation stability of the road module 110, preventing road damage caused by ground subsidence or uneven settlement. Specifically, when rainfall occurs, water first flows through the pavement layer 111, then into the retention module 120, and finally enters the water storage chamber 1311 of the water storage module 130 through the inlet 1312. Rainwater collected in the water storage chamber 1311, when not reaching the upper limit of the water storage capacity of the water storage module 130, can be gradually discharged through the permeable layer 132 to supply the water demand of the retention module 120. Once the water level in the water storage chamber 1311 exceeds the preset height, the overflow device 133 is activated, and the excess water will be discharged through the overflow device 133, preventing the water in the water storage chamber 1311 from flowing back into the retention module 120 or even flooding the road module 110 and causing damage to the road. Even in the event of heavy rain, it can effectively reduce road water accumulation and ensure the safe use of the road.
[0043] It is understood that, in some embodiments, the first compacted layer 113 may be made of different types of materials, including but not limited to sand, gravel, and crushed stone, to enable the road module 110 to provide sufficient load-bearing capacity and stability. The thickness of the first compacted layer 113 may be adjusted according to specific construction requirements and soil conditions to ensure the robustness and durability of the entire road structure.
[0044] In some embodiments, the water storage module 130 further includes a second compacted layer 114 disposed below the permeable layer 132. The overflow component 133 includes an overflow port 1331, an overflow pipe 1332 communicating with the overflow port 1331, and a drain pipe communicating with the overflow pipe 1332. The drain pipe is disposed below or within the second compacted layer 114, and the overflow pipe 1332 penetrates the permeable layer 132 and communicates with the drain pipe. The provision of the second compacted layer 114 further enhances the stability of the water storage module 130 and provides a more solid installation foundation for the overflow component 133, ensuring that the overflow component 133 can work effectively during startup without being affected by ground movement.
[0045] Specifically, when the water level in the water storage chamber 1311 rises above its storage limit, water will flow into the overflow pipe 1332 through the overflow port 1331, then through the overflow pipe 1332 which penetrates the permeable layer 132, and finally be discharged out of the system. The top of the overflow component 133 is lower than the lowest point of the inlet 1312, ensuring that the overflow mechanism can be activated in time when the water storage chamber 1311 reaches its maximum storage capacity, preventing the water level in the water storage chamber 1311 from overflowing onto the road and causing a safety hazard.
[0046] It is understood that, in some embodiments, the material of the second compacted layer 114 may be selected from, but is not limited to, sand, gravel, and other materials suitable for compaction, to ensure sufficient load-bearing capacity and stability. The presence of the second compacted layer 114 not only reinforces the overall structure of the water storage module 130 but also provides a stable installation environment for the overflow component 133. It should be noted that the overflow pipe 1332 needs to ensure that it can withstand a certain pressure while maintaining good sealing to prevent water leakage during transmission. The layout of the drain pipe can be designed according to the flow direction and speed of drainage to ensure smooth and unobstructed drainage.
[0047] Furthermore, to improve the reliability and effectiveness of the system, reliable sealing measures can be adopted at the connection between the overflow pipe 1332 and the drainage pipe to prevent leakage during drainage. The overflow component 133 can be designed in various forms, including but not limited to valve type and float type, to adapt to different application scenarios and needs. In this way, the water storage module 130 can not only effectively collect and store rainwater, but also quickly activate the overflow mechanism when the stored water exceeds the predetermined limit to discharge the excess water, ensuring that the normal use of the road is not affected.
[0048] In some embodiments, the water storage module 130 includes a first cover plate 134 and a second cover plate 135 connected to the top of the concrete masonry member 131, the first cover plate 134 and the second cover plate 135 being alternately and spaced apart in a horizontal direction. The first cover plate 134 is configured to rotate relative to the concrete masonry member 131 to expose the water storage chamber 1311 when maintenance or inspection is required, while the second cover plate 135 is fixedly connected to the concrete masonry member 131. The cooperative use of the first cover plate 134 and the second cover plate 135 allows the water storage module 130 to remain closed under normal circumstances to protect the internal facilities from external interference, while it can be easily opened for maintenance when needed.
[0049] Specifically, when it is necessary to inspect or clean the water storage chamber 1311, the first cover 134 can be easily opened to expose the internal space of the water storage chamber 1311, facilitating work by personnel. The second cover 135 remains fixed, providing protection and preventing debris from entering the water storage chamber 1311. The alternating arrangement of the first cover 134 and the second cover 135 ensures both the safety of the water storage module 130 and provides necessary accessibility. This not only simplifies the maintenance process but also increases the service life of the water storage module 130.
[0050] It is understood that, in some embodiments, the rotation mechanism of the first cover plate 134 can be designed in various types, including but not limited to hinged, sliding rail, and other forms of rotation mechanisms, to ensure that the first cover plate 134 can be opened and closed smoothly and reliably. The material of the first cover plate 134 can be selected from corrosion-resistant and high-strength materials, including but not limited to stainless steel and high-strength plastics, to ensure that the first cover plate 134 can withstand the pressure and corrosion of the external environment. Furthermore, to ensure the sealing performance of the first cover plate 134, a rubber sealing ring or other type of sealing material can be provided between the first cover plate 134 and the concrete masonry component 131 to effectively prevent the intrusion of rainwater and impurities when closed.
[0051] Furthermore, to ensure that the second cover plate 135 can be firmly attached to the concrete masonry component 131, the second cover plate 135 can be fixed by welding, bolting, or other reliable methods. The design of fixing the second cover plate 135 not only enhances the structural integrity of the water storage module 130, but also provides additional protection to prevent external objects from entering the water storage chamber 1311 and affecting its normal function.
[0052] By designing the first cover plate 134 and the second cover plate 135, the water storage module 130 achieves both protection of internal facilities and ease of maintenance. This not only improves the practicality of the water storage module 130 but also reduces maintenance costs and extends the service life of the device. In this way, the water storage module 130 can better adapt to application requirements under various environmental conditions, ensuring its stable operation in urban drainage systems.
[0053] In some embodiments, the highest point of the first cover plate 134 and the second cover plate 135 is not higher than the lowest point of the pavement 111, to ensure that water can flow smoothly into the retention module 120 and reduce the amount of water accumulation on the road surface. Simultaneously, it ensures that the water storage module 130 does not protrude above the road surface after installation, thus not affecting traffic or becoming an obstacle for pedestrians and vehicles, further improving the aesthetic appeal of the city. Specifically, the installation height of the first cover plate 134 and the second cover plate 135 is lower than or equal to the lowest point of the pavement 111, ensuring the concealment of the entire device, allowing it to blend well into the surrounding environment without affecting aesthetics or usability.
[0054] Please see Figure 2 In some embodiments, the concrete masonry component 131 includes a main body 1313 and a support 1314. One side of the support 1314 is connected to the side of the main body 1313 near the water storage chamber 1311 along the horizontal direction, and the top of the support 1314 is connected to the second cover plate 135. This not only increases the overall stability of the water storage module 130, but also provides strong support for the second cover plate 135, so that the water storage module 130 can maintain the structural integrity and functionality when subjected to external pressure.
[0055] Specifically, the support portion 1314 provides additional support for the second cover plate 135, enabling it to withstand loads from pedestrians, vehicles, etc., without deformation or damage due to excessive load. The connection between the support portion 1314 and the main body portion 1313 ensures the robustness of the water storage module 130. Even under heavy load conditions, the water storage module 130 can maintain its structural stability and prevent damage caused by external pressure. It is understood that in some embodiments, the specific structure of the support portion 1314 can be a reinforcing rib, a column, or other form of support structure. Furthermore, the connection method between the support portion 1314 and the main body portion 1313 can be welding, riveting, or bolting to ensure the reliability of the connection. The material of the support portion 1314 can be high-strength alloy steel or corrosion-resistant composite materials to ensure its durability.
[0056] Please see Figure 2 In some embodiments, the water storage module 130 further includes a protective grille 136 covering the water inlet 1312. The protective grille 136 prevents larger solid objects from entering the water storage module 130, protecting the internal structure from blockage and damage, and ensuring smooth water flow into the water storage chamber 1311. Specifically, the protective grille 136 can be made of materials such as metal or high-strength plastic, with a certain mesh density to prevent large particles of impurities from entering the water storage chamber 1311. The mesh size can be determined according to the actual usage environment, effectively blocking larger debris without affecting the water flow speed. The installation of the protective grille 136 at the water inlet 1312 maximizes the interception of contaminants from the retention module 120, ensuring that the water entering the water storage chamber 1311 is relatively pure. In some embodiments, the protective grille 136 is detachably installed at the water inlet 1312 for easy periodic cleaning or replacement. In addition, to enhance the stability of the protective grille 136, the protective grille 136 can be fixed to the frame of the water storage module 130 to ensure that it will not shift or be damaged under severe weather conditions.
[0057] It is understood that in some embodiments, the vertical dimension of the inlet 1312 can be designed to be 2.8–5.2 cm. For example, the vertical dimension of the inlet 1312 can be 2.8 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, 5.1 cm, etc. The shape of the protective grille 136 can be adjusted according to the specific size and shape of the water storage module 130 to ensure a perfect match with the inlet 1312 of the water storage module 130. Furthermore, the material of the protective grille 136 can also be a corrosion-resistant material to extend its service life. The design of the protective grille 136 can also incorporate rust-proofing to ensure it is not prone to rusting during long-term use and maintains good filtration performance. Through the design of the protective grille 136, the water storage module 130 can not only effectively collect and store rainwater but also prevent debris from entering, protecting the internal structure from damage and ensuring the normal operation of the water storage module 130. This not only improves the practicality of the water storage module 130 but also reduces maintenance frequency and lowers maintenance costs.
[0058] In some embodiments, the water storage module 130 includes a plurality of overflow members 133 arranged at intervals along the horizontal direction. The spacing between adjacent overflow members 133 can be 0.8 to 2.2 meters. For example, the distance between adjacent overflow members 133 can be 0.8m, 1m, 1.4m, 1.8m, 2m, 2.2m, etc. This ensures that when the water level in the water storage chamber 1311 reaches a preset height, excess water can be discharged in a timely and effective manner, preventing excessive water accumulation in the water storage chamber 1311, which could affect the function and lifespan of the water storage module 130. Specifically, the overflow members 133 in the water storage module 130 are designed to be arranged at intervals along the horizontal direction, with the distance between every two overflow members 133 maintained between 0.8 and 2.2 meters. When the water level in the water storage chamber 1311 rises to the top of the overflow members 133, excess water will be discharged into the external drainage system through the overflow members 133. The top of the overflow component 133 is lower than the lowest point of the inlet 1312, ensuring that the overflow mechanism can automatically activate when the water level in the water storage chamber 1311 reaches a certain height, promptly discharging excess water and preventing potential problems caused by excessive water accumulation (structural damage or impact on the surrounding environment). This effectively controls the water level in the water storage chamber 1311, ensuring that the water storage module 130 can operate normally under various weather conditions, especially in cases of heavy rainfall, enabling a rapid response and preventing water accumulation.
[0059] It is understood that in some embodiments, the number and spacing of the overflow components 133 can be adjusted according to actual needs to accommodate different water storage capacities and drainage rates. The overflow components 133 may also include a filter to prevent foreign matter from entering, ensuring that the discharged water is clean and free of impurities, thereby improving the drainage system's efficiency in treating rainwater. In other embodiments, to improve the system's flexibility and adaptability, the overflow components 133 can be designed modularly, allowing for the addition or removal of the number of overflow components 133 and adjustment of the distance between them as needed. This enables the water storage module 130 to better adapt to different application scenarios and facilitates later maintenance and upgrades.
[0060] In some embodiments, the permeable layer 132 is configured such that its permeability allows the water in the water storage chamber 1311 to be drained within 24 hours, ensuring that the water in the water storage chamber 1311 can be naturally drained through the permeable layer 132 in a short time, avoiding water pollution or structural problems caused by prolonged water accumulation. It should be noted that the permeability coefficient of the permeable layer 132 can be calculated based on: permeability (mm / h) = water storage height (mm) / 24h.
[0061] To further improve the permeability of the permeable layer 132, special additives, including but not limited to polymer fibers, can be added to the permeable layer 132 to enhance its structural strength while maintaining good permeability. The permeable layer 132 can also be designed with a multi-layer structure, where the materials and densities of different layers can be adjusted according to actual needs to achieve optimal permeability.
[0062] Please see Figure 2 In some embodiments, the water storage module 130 is located between the road module 110 and the retention module 120. Thus, the water storage module 130 can receive water from the retention module 120 on one side of the road without affecting the normal use of the road and without occupying excessive land resources. It is understood that in some embodiments, the selection of the location of the water storage module 130 may take into account multiple factors, including but not limited to water flow direction, ground slope, construction difficulty, and maintenance convenience. For example, the water storage module 130 is positioned as close as possible to the retention module 120 to reduce water flow resistance while ensuring that the water storage module 130 does not affect normal road traffic.
[0063] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0064] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0065] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A concealed drainage device with water storage function, characterized in that, The device comprises: a road module comprising a road pavement and a pavement cushion arranged in sequence along a vertical direction, and the road pavement covers the top of the pavement cushion; a retention module arranged on one side of the road module, and the highest point of the retention module is lower than the lowest point of the road pavement; a water storage module connected to one side of the retention module, the water storage module comprises a concrete masonry and a water permeable layer arranged at the bottom of the concrete masonry, the concrete masonry is provided with a water storage chamber and a water inlet communicating with the water storage chamber, the water storage module further comprises an overflow device arranged in the water storage chamber, the top of the overflow device is lower than the lowest point of the water inlet, and the overflow device is configured to open to discharge the remaining water when the water storage chamber is full of water; wherein the highest point of the retention module is not lower than the lowest point of the water inlet and not higher than the highest point of the water inlet, and at least part of the water permeable layer contacts the retention module.
2. The concealed drainage device with water storage function according to claim 1, wherein the road module further comprises a first tamping layer arranged below the pavement cushion, and the top of the water permeable layer is lower than the top of the first tamping layer.
3. The concealed drainage device with water storage function according to claim 1, wherein the water storage module further comprises a second tamping layer arranged below the water permeable layer, the overflow device comprises an overflow port, an overflow pipe communicating with the overflow port, and a drainage pipe communicating with the overflow pipe, the drainage pipe is arranged below or in the second tamping layer, and the overflow pipe penetrates the water permeable layer to communicate with the drainage pipe.
4. The concealed drainage device with water storage function according to claim 1, wherein the water storage module further comprises a first cover plate and a second cover plate connected to the top of the concrete masonry, the first cover plate and the second cover plate are arranged alternately and spaced apart along the horizontal direction, the first cover plate is configured to be able to rotate relative to the concrete masonry to expose the water storage chamber, and the second cover plate is fixedly connected to the concrete masonry.
5. The concealed drainage device with water storage function according to claim 4, wherein the highest points of the first cover plate and the second cover plate are not higher than the lowest point of the road pavement.
6. The concealed drainage device with water storage function according to claim 4, wherein the concrete masonry comprises a main body and a support, one side of the support along the horizontal direction is connected to one side of the main body close to the water storage chamber, and the top of the support is connected to the second cover plate.
7. The concealed drainage device with water storage function according to claim 1, wherein the water storage module further comprises a protective grating covering the water inlet.
8. The concealed drainage device with water storage function according to claim 1, wherein the water storage module comprises a plurality of overflow devices arranged spaced apart along the horizontal direction, and the distance between adjacent overflow devices is 0.8-2.2 m.
9. The concealed drainage device with water storage function according to claim 1, wherein The permeability of the water permeable layer satisfies the condition of draining the water in the water storage chamber within 24 hours.
10. The hidden water storage and drainage device according to claim 1, wherein the water storage module is located between the road module and the detention module.