Ecological corridor grit chamber structure with runoff pollution reduction function
By adopting a gradient interception system in the ecological corridor, the problem of rainwater diversion and runoff pollution in the curb stone renovation was solved, and the pollutants were treated in stages, preventing blockage and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA URBAN CONSTR DESIGN & RES INST CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-08
AI Technical Summary
Existing curbstone modification methods are inadequate in terms of rainwater diversion and runoff pollution control, leading to problems such as blockage, increased pollutant load, and high maintenance costs.
An ecological corridor sedimentation tank structure with runoff pollution reduction function is adopted, including a first installation base and a second installation base, forming a gradient interception system. Through the grid structure and interception basket, a two-stage filtration is achieved to intercept coarse particulate matter and capture fine pollutants.
It effectively prevents grit chamber blockage, extends maintenance cycles, reduces pollutant load, and lowers maintenance frequency and costs.
Smart Images
Figure CN224213494U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sedimentation tank technology, and in particular to the structure of an ecological corridor sedimentation tank with runoff pollution reduction function. Background Technology
[0002] Urban ecological corridors, as linear areas within the urban ecological environment, play a crucial role in optimizing biodiversity conservation patterns and connecting biological habitats. They are an important component of the urban regional-scale ecological network and a key link in ensuring urban ecological security and improving residents' well-being. Urban ecological corridors are categorized into river ecological corridors, urban road ecological corridors, and urban green space ecological corridors.
[0003] In recent years, with the implementation of the sponge city concept, in order to enhance the role of urban corridors in urban stormwater management, urban corridors, as an important part of the urban sponge system, have the main goal of alleviating urban flooding in the surrounding areas and improving the ability to cope with extreme rainfall, while absorbing their own runoff.
[0004] Because traditional urban development and construction mainly rely on curb stones, rainwater from the periphery of ecological corridors has difficulty entering the corridors. The sponge city transformation of urban ecological corridors is achieved by modifying curb stone openings to open up surface runoff routes between the outer areas of the corridor and the corridor itself. This allows rainwater runoff from the surrounding areas to be collected and initially purified by sedimentation. Then, sunken sponge facilities are created using green spaces to retain, purify, and absorb rainwater on-site, achieving "natural accumulation, natural infiltration, and natural purification," thus fulfilling the stormwater management function of urban ecological corridors.
[0005] Existing curb stones include the following types:
[0006] 1. Notched curb stones:
[0007] Design: Rectangular or trapezoidal notches (usually 20-30cm wide, 5-15m apart) are made at intervals on the side of the curbstone. The bottom of the notch is flush with or slightly lower than the road surface. Pebbles or eco-friendly concrete are laid at the notch to prevent erosion.
[0008] Applicable scenarios: Green belts between motor vehicle lanes and non-motor vehicle lanes, and the junction of sidewalks and green spaces.
[0009] Advantages: Low cost, simple construction, and suitable for the renovation of existing roads.
[0010] 2. Recessed curb stones:
[0011] Design features: The overall height of the curbstone is reduced (e.g., from 15cm to 5cm), creating a height difference between the top and the road surface, allowing rainwater to overflow into the green space, and a layer of gravel is set at the bottom to enhance permeability.
[0012] Applicable scenarios: Areas adjacent to roads and sunken green spaces or bioretention ponds.
[0013] Advantages: Enables natural overflow, reducing manual maintenance.
[0014] However, existing methods for converting curbs still have some technical, economic, and maintenance drawbacks in practical applications, as follows:
[0015] (1) Rainwater diversion problem: If the opening is too large, it will easily lead to silt blockage; if it is too small, the diversion capacity will be insufficient, and it will be unable to quickly discharge excessive rainwater during extreme rainfall, thus failing to completely solve the risk of waterlogging.
[0016] (2) Runoff pollution problem: Since the area around the ecological corridor is mostly urban roads, there are a lot of pollutants such as suspended particulate matter, oily waste, and heavy metal pollutants on the road surface. If rainwater is directly introduced into the ecological corridor, it will increase the pollutant load of the corridor.
[0017] (3) Material durability issues: Cement bricks have insufficient strength, permeable curb stones are easily blocked, and porous materials have pores blocked by mud and pollutants after long-term use.
[0018] (4) Maintenance cost issues: The guide channel of the open curbstone needs to be cleaned frequently to remove fallen leaves and garbage, making later modification and maintenance difficult. Utility Model Content
[0019] The purpose of this utility model is to solve the problems existing in the prior art by proposing an ecological corridor sedimentation tank structure with runoff pollution reduction function.
[0020] To achieve the above objectives, the present invention adopts the following technical solution:
[0021] The structure of an ecological corridor sedimentation basin with runoff pollution reduction function includes:
[0022] The first mounting base is set at the opening position of the modified curbstone, and the surface of the first mounting base is provided with a grid structure;
[0023] The second mounting base is installed on the drain end side of the first mounting base and is located above the grit chamber. The second mounting base is equipped with a detachable sludge trap inside.
[0024] Preferably, the side section of the first mounting base is U-shaped, and both sides of it are covered on the modified curb stones on both sides of the opening.
[0025] Preferably, a drain outlet is provided on one side of the drain end of the first mounting base, and the grille structure includes a plurality of grille openings provided on one side of the water inlet end of the first mounting base.
[0026] Preferably, the side wall of the grille opening of the first mounting base is perpendicular to the ground, and the angle between the side wall and the ground is greater than 90 degrees.
[0027] Preferably, the top of the second mounting base is frame-shaped, and both sides of the top of the second mounting base are inclined, and the inclined edge starts from the side of the second mounting base away from the first mounting base, extends to the inner wall of the water inlet end of the first mounting base, and is inclined upward.
[0028] Preferably, both the first mounting base and the second mounting base are integrally formed from stainless steel.
[0029] Preferably, the bottom of the second mounting base starts from the side of the second mounting base closer to the first mounting base, extends to the side of the second mounting base away from the first mounting base, and is inclined downward.
[0030] Preferably, the shape and size of the intercepting basket are adapted to the inner cavity of the second mounting base, and lifting grooves are provided on both sides of it.
[0031] Preferably, the intercepting blue is integrally molded from polypropylene material.
[0032] Preferably, the bottom slope of the second mounting base is 10%.
[0033] Compared with the prior art, the beneficial effects of this utility model are:
[0034] This utility model forms a gradient interception system through the first and second mounting seats. The grid structure of the first mounting seat and the interception basket of the second mounting seat form a two-stage filtration. Coarse particles and garbage are intercepted by the grid, while fine pollutants are captured a second time by the interception basket, realizing the graded treatment of pollutants. This can effectively prevent the sedimentation tank from clogging and extend the maintenance cycle. Attached Figure Description
[0035] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the ecological corridor sedimentation tank structure with runoff pollution reduction function proposed in this utility model.
[0036] Figure 2 This is a second-view perspective three-dimensional schematic diagram of the ecological corridor sedimentation tank structure with runoff pollution reduction function proposed in this utility model.
[0037] Figure 3 This is a schematic diagram showing the location of the modified curbstone opening in the ecological corridor sedimentation tank structure with runoff pollution reduction function proposed in this utility model.
[0038] Figure 4 This is a schematic diagram of the intercepting basket of the ecological corridor sedimentation tank structure with runoff pollution reduction function proposed in this utility model.
[0039] Figure 5 This is a side sectional view of the ecological corridor sedimentation tank structure with runoff pollution reduction function proposed in this utility model.
[0040] In the diagram: 1. First mounting base; 2. Second mounting base; 3. Opening position; 4. Grille opening; 5. Sewage interception basket; 6. Sedimentation tank; 7. Modified curbstone; 8. Drainage outlet; 9. Lifting channel. Detailed Implementation
[0041] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.
[0042] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model 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.
[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0045] Reference Figures 1-5 The ecological corridor sedimentation tank 6 structure with runoff pollution reduction function includes:
[0046] The first mounting base 1 is set at the opening position 3 of the modified curbstone 7, and the surface of the first mounting base 1 is provided with a grid structure.
[0047] The second mounting base 2 is installed on the drain end side of the first mounting base 1 and is located above the sedimentation tank 6. The second mounting base 2 is equipped with a detachable intercepting basket 5. The intercepting basket 5 adopts a mesh structure. After the water flow carries debris into the second mounting base 2, it first hits the water-facing surface of the intercepting basket 5. Larger particles (such as leaves and plastic fragments) are directly blocked by the mesh.
[0048] In the specific implementation of this application, an opening needs to be made at the curbstone 7 to be modified to form opening position 3. Then, the first mounting seat 1 is installed at opening position 3. The first mounting seat 1 and the second mounting seat 2 form a gradient interception system. The grid structure of the first mounting seat 1 and the interception basket 5 of the second mounting seat 2 form a two-stage filtration. Coarse particles and garbage are intercepted by the grid, and fine pollutants are captured by the interception basket 5 for secondary capture, realizing the graded treatment of pollutants. This can effectively prevent the sedimentation tank 6 from being blocked and extend the maintenance cycle.
[0049] In this embodiment, the side cross-section of the first mounting base 1 is set in a "U" shape, and both sides of it are covered on the modified curbstones 7 on both sides of the opening position 3. The concave cross-section and the modified curbstones 7 form a nested cover, which can adapt to the modification needs of curbstone openings of different sizes, reduce the risk of water leakage, and the joint between the first mounting base 1 and the modified curbstones 7 can be filled to ensure sealing.
[0050] In this embodiment, a drain outlet 8 is provided on one side of the drain end of the first mounting base 1. The grid structure includes a plurality of grid openings 4 opened on one side of the water inlet end of the first mounting base 1. One side wall of the grid opening 4 of the first mounting base 1 is perpendicular to the ground, and the angle between the side wall and the ground is 96 degrees. The inclined ground setting can guide the water flow and guide it into the second mounting base 2.
[0051] In this embodiment, the top of the second mounting base 2 is frame-shaped, and the top of both sides of the second mounting base 2 are set with inclined sides. The inclined sides start from the side of the second mounting base 2 away from the first mounting base 1 and extend to the inner wall of the water inlet end of the first mounting base 1, and are set with an upward inclination. The inclined side of the top of the second mounting base 2 extends to form a flow guiding and restricting surface, which controls the direction of water flow, restricts the water flow into the intercepting basket 5, and prevents the water flow from splashing laterally when the flow rate is high.
[0052] In this embodiment, both the first mounting base 1 and the second mounting base 2 are integrally formed of stainless steel. Stainless steel can resist water corrosion and mechanical impact, extend the service life of the equipment, and reduce the frequency of maintenance.
[0053] In this embodiment, the bottom of the second mounting base 2 starts from the side of the second mounting base 2 closest to the first mounting base 1 and extends to the side of the second mounting base 2 away from the first mounting base 1, and is set in a downward slope. The bottom of the second mounting base 2 extends in a downward slope to form a continuous slope, which guides the water filtered by the intercepting basket 5 to flow along the slope and avoids local water accumulation.
[0054] In this embodiment, the shape and size of the intercepting basket 5 are adapted to the inner cavity of the second mounting base 2, and lifting grooves 9 are provided on both sides of it, which facilitates quick disassembly and assembly of the intercepting basket 5 by a single person, making it convenient for later maintenance and cleaning of fallen leaves and silt, and improving the problem that conventional curb openings need to be cleaned and maintained regularly.
[0055] In this embodiment, the intercepting basket is integrally molded from polypropylene, which is resistant to water corrosion and microbial adhesion, extending the service life of the intercepting basket 5 and reducing the manual cleaning load.
[0056] In this embodiment, the bottom slope of the second mounting base 2 is 10%, which balances the water flow rate and sedimentation efficiency, prevents excessive deposition of fine particles, and keeps the drainage channel unobstructed.
[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A sedimentation tank (6) structure for an ecological corridor with runoff pollution reduction function, characterized in that: include: The first mounting base (1) is set at the opening position (3) of the modified curbstone (7), and the surface of the first mounting base (1) is provided with a grid structure; The second mounting base (2) is installed on the drain end side of the first mounting base (1) and is located above the grit chamber (6). The second mounting base (2) is equipped with a detachable sludge trap (5).
2. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 1, characterized in that: The side section of the first mounting base (1) is set in a "U" shape, and both sides of it are covered on the modified curbstone (7) on both sides of the opening position (3).
3. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 2, characterized in that: The first mounting base (1) has a drain outlet (8) on one side of the drain end, and the grid structure includes a plurality of grid openings (4) on one side of the water inlet end of the first mounting base (1).
4. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 3, characterized in that: The side wall of the grille opening (4) of the first mounting base (1) is perpendicular to the ground, and the angle between the side wall and the ground is greater than 90 degrees.
5. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 4, characterized in that: The top of the second mounting base (2) is frame-shaped, and the top of both sides of the second mounting base (2) are inclined. The inclined side starts from the side of the second mounting base (2) away from the first mounting base (1) and extends to the inner wall of the water inlet end of the first mounting base (1), and is inclined upward.
6. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 5, characterized in that: Both the first mounting base (1) and the second mounting base (2) are integrally formed from stainless steel.
7. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 6, characterized in that: The bottom of the second mounting base (2) starts from the side of the second mounting base (2) close to the first mounting base (1) and extends to the side of the second mounting base (2) away from the first mounting base (1), and is inclined downward.
8. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 7, characterized in that: The shape and size of the intercepting basket (5) are adapted to the inner cavity of the second mounting base (2), and lifting grooves (9) are provided on both sides of it.
9. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 8, characterized in that: The intercepting basket is made of polypropylene and molded in one piece.
10. The structure of the ecological corridor sedimentation tank (6) with runoff pollution reduction function according to claim 9, characterized in that: The bottom slope of the second mounting base (2) is 10%.