Road rainwater drainage structure based on ecological corridor construction
By designing an automatic diversion and multi-stage filtration road rainwater discharge structure in the construction of ecological corridors, the problems of water pollution and drainage system blockage caused by the direct discharge of initial rainwater into rivers have been solved, achieving effective rainwater treatment and long-term system operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-31
AI Technical Summary
The existing ecological corridor construction projects have resulted in untreated rainwater being discharged directly into the river along the riverbanks, causing water pollution. Furthermore, the traditional road drainage system is prone to clogging.
Design a road stormwater drainage structure based on ecological corridor construction, including interception nets, floating boards, flow-stopping balls, intercepting pipes, sewage tanks, and multi-layer filter layers. Through automatic diversion and multi-stage filtration, it can achieve the separation of initial and subsequent rainwater and the effective interception of impurities.
It effectively avoids water pollution caused by initial rainwater entering the river channel, extends the service life of the drainage structure, reduces the maintenance frequency, and prevents blockages.
Smart Images
Figure CN224063628U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ecological corridor construction technology, and in particular to a road rainwater drainage structure based on ecological corridor construction. Background Technology
[0002] Ecological corridors are a type of ecosystem space with a linear or strip layout, designed to connect isolated ecological units (such as forests and wetlands) and promote species dispersal, gene exchange, and connectivity of ecological functions.
[0003] Currently, ecological corridors, as the core carriers of urban ecological networks, need to balance biodiversity conservation, stormwater management, and landscape functions. Roads, as components of ecological corridors, play a role in balancing transportation functions and ecological protection.
[0004] However, many existing ecological corridors along riverbanks suffer from water pollution. Due to the high levels of pollutants on the road surface, initial rainwater enters the road's drainage system and flows into the river untreated, causing pollution. Initial rainwater refers to runoff formed at the beginning of rainfall when rainwater dissolves harmful gases in the air and washes away dust and various pollutants from the road surface. Traditional road drainage systems are generally based on "rapid discharge," which not only lacks simple filtration of rainwater, leading to a large amount of impurities adhering to the drainage structure and causing blockages, but also lacks the function of intercepting and diverting sewage, resulting in untreated initial rainwater being directly discharged into the river, causing river water pollution. Utility Model Content
[0005] The purpose of this utility model is to provide a road rainwater drainage structure based on the construction of ecological corridors, which aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. It not only intercepts and diverts initial rainwater to prevent it from entering the river and causing water pollution, but also effectively filters impurities in the rainwater to prevent the drainage structure from becoming blocked.
[0006] This utility model provides a road rainwater drainage structure based on ecological corridor construction. Installed on the road, it includes a drainage trough with an intercepting net installed at the top. A drainage pipe leading to a river is connected to the bottom of the trough. A diversion component is connected to the middle of the drainage pipe, comprising an intercepting pipe, a sewage tank, and a floating plate. One end of the intercepting pipe is connected to the middle of the drainage pipe, and the other end is connected to the sewage tank. A sewage discharge pipe leading to a sewage treatment plant is connected to the side wall of the sewage tank. The floating plate is installed inside the sewage tank and can float up and down according to the water level. A flow-stopping ball is installed on the upper surface of the floating plate, cooperating with the intercepting pipe. A filter assembly is installed inside the drainage trough, comprising a first filter layer, a second filter layer, and a third filter layer, stacked from top to bottom within the drainage trough.
[0007] Furthermore, the diameter of the stop-flow ball is equal to the inner diameter of the stop-flow tube.
[0008] Furthermore, the inner diameter of the interceptor pipe is greater than or equal to the inner diameter of the drain pipe.
[0009] Furthermore, the inner diameter of the sewage pipe is smaller than that of the drainage pipe.
[0010] Furthermore, the ratio of the inner diameter of the sewage pipe to the inner diameter of the drainage pipe is between 1:3 and 1:5.
[0011] Furthermore, the cross-sectional shape of the floating plate in the horizontal direction is consistent with the cross-sectional shape of the inner cavity of the sewage tank in the horizontal direction, and the cross-sectional area of the floating plate in the horizontal direction is equal to the cross-sectional area of the inner cavity of the sewage tank in the horizontal direction.
[0012] Furthermore, drainage holes are vertically oriented through the floating board.
[0013] Furthermore, the first filter layer, the second filter layer, and the third filter layer are respectively a gravel layer, an activated carbon layer, and a porous fiber cotton layer.
[0014] Furthermore, the filter assembly also includes a mounting frame and three filter frames. The mounting frame is fixed in the drain tank, and the three filter frames are detachably stacked on the mounting frame, with the first filter layer, the second filter layer, and the third filter layer laid in one filter frame respectively.
[0015] Furthermore, the side wall of the mounting bracket is recessed vertically downward with an opening, and the side wall of the filter frame is protruded horizontally with a limiting block that matches the opening. The upper surface of the limiting block is provided with a pull handle.
[0016] This utility model provides a road stormwater drainage structure based on ecological corridor construction. Through the cooperation of a floating plate, a flow-stopping ball, and a flow-intercepting pipe, the buoyancy of the floating plate drives the flow-stopping ball to automatically open and close the passage of the flow-intercepting pipe. This achieves the separation of highly polluted initial rainwater and less polluted later rainwater without additional power, preventing initial rainwater from entering the river and causing water pollution. Through the cooperation of an intercepting net, a first filter layer, a second filter layer, and a third filter layer, it effectively intercepts and filters leaves, larger impurities, sand, organic matter, and suspended particles in the rainwater. This not only avoids the problem of reduced drainage efficiency due to blockage of the drainage pipes by impurities, but also extends the service life of each filter layer and reduces the maintenance frequency through the multi-stage filtration design. Attached Figure Description
[0017] Figure 1 This is a three-dimensional view of a road rainwater drainage structure based on the construction of an ecological corridor according to this utility model.
[0018] Figure 2 for Figure 1The diagram shown is a three-dimensional exploded view of the road stormwater drainage structure based on the construction of ecological corridors.
[0019] Figure 3 For along Figure 1 A cross-sectional view along line AA in the middle.
[0020] Figure 4 for Figure 1 The exploded 3D view of the shunt component is shown.
[0021] Figure 5 for Figure 1 An exploded 3D view of the filter assembly shown.
[0022] Figure 6 for Figure 5 A magnified diagram of point B in the middle. Detailed Implementation
[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0024] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0025] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.
[0026] Please see Figures 1-3 A road stormwater drainage structure based on ecological corridor construction is installed on the road, including a drainage trough 10, an intercepting net 11 installed on the top of the drainage trough 10, and a drainage pipe 40 connected to the bottom of the drainage trough 10 leading to a river. The intercepting net 11 is used to intercept leaves and larger debris on the road to prevent clogging of the drainage trough 10.
[0027] A diversion assembly 20 is connected to the middle of the drain pipe 40. The diversion assembly 20 includes a cut-off pipe 21, a sewage tank 22, and a floating plate 23. One end of the cut-off pipe 21 is connected to the middle of the drain pipe 40, and the other end is connected to the sewage tank 22. A sewage discharge pipe 221 leading to a sewage treatment plant is connected to the side wall of the sewage tank 22. The floating plate 23 is installed inside the sewage tank 22 and can float up and down according to the water level in the sewage tank 22. A flow-stopping ball 231 is provided on the upper surface of the floating plate 23, which cooperates with the cut-off pipe 21. The flow-stopping ball 231 can float up with the floating plate 23 to cooperate with the cut-off pipe 21, thereby blocking the cut-off pipe 21 and preventing the drain pipe 40 from communicating with the sewage tank 22. The flow-stopping ball 231 can also move down with the floating plate 23 to detach from the cut-off pipe 21, thereby allowing the drain pipe 40 to continue communicating with the sewage tank 22.
[0028] A filter assembly 30 is installed inside the drain tank 10. The filter assembly 30 includes a first filter layer 31, a second filter layer 32, and a third filter layer 33, which are stacked from top to bottom inside the drain tank 10. The first filter layer 31, the second filter layer 32, and the third filter layer 33 perform multi-stage filtration on the rainwater flowing into the drain tank 10, thereby intercepting sand, organic matter, and suspended particles in the rainwater, preventing the drain pipe 40 from being blocked due to excessive impurities.
[0029] As described above, the road rainwater drainage structure based on ecological corridor construction provided by this utility model, through the cooperation of floating plate 23, flow-stopping ball 231, and intercepting pipe 21, uses the buoyancy of floating plate 23 to drive flow-stopping ball 231 to automatically open and close the passage of intercepting pipe 21, realizing the separation of highly polluted initial rainwater and less polluted later rainwater without additional power, avoiding the initial rainwater from entering the river and causing water pollution; through the cooperation of interception net 11, first filter layer 31, second filter layer 32, and third filter layer 33, it effectively intercepts and filters leaves, larger impurities, sand, organic matter, and suspended particles in rainwater, not only avoiding the problem of reduced drainage efficiency of drainage pipe 40 due to impurities clogging, but also extending the service life of each filter layer and reducing the maintenance frequency through the layered filtration design.
[0030] Please see Figure 3 The diameter of the flow-stopping ball 231 is slightly smaller than or equal to the inner diameter of the intercepting pipe 21. This arrangement ensures that the flow-stopping ball 231 and the intercepting pipe 21 cooperate to achieve a better sealing effect, thereby realizing the separation of initial rainwater and subsequent rainwater. In this embodiment, the diameter of the flow-stopping ball 231 is equal to the inner diameter of the intercepting pipe 21.
[0031] Because the interceptor pipe 21 is connected to the middle of the drain pipe 40, rainwater flows from the drain trough 10 into the drain pipe 40. When the rainwater in the drain pipe 40 reaches the junction of the drain pipe 40 and the interceptor pipe 21, the rainwater will preferentially flow into the interceptor pipe 21. The inner diameter of the interceptor pipe 21 is greater than or equal to the inner diameter of the drain pipe 40 to ensure that the maximum flow rate of the interceptor pipe 21 is greater than or equal to the maximum flow rate of the drain pipe 40. This allows the initial rainwater to preferentially enter the sewage tank 22 through the interceptor pipe 21 without overflowing into the drain pipe 40, ensuring the effectiveness of sewage interception and diversion.
[0032] Furthermore, since the inner diameter of the sewage pipe 221 is smaller than that of the drainage pipe 40, the discharge flow rate of the sewage pipe 221 is less than the flow rate of rainwater flowing into the sewage tank 22. This maintains a high water level in the sewage tank 22, allowing the stop-flow ball 231 to continuously block the intercepting pipe 21. When the sewage tank 22 is full, the stop-flow ball 231 blocks the intercepting pipe 21, and the initial rainwater in the sewage tank 22 is continuously discharged to the sewage treatment plant at a low flow rate through the sewage pipe 221. As the water level in the sewage tank 22 decreases, the stop-flow ball 231 moves down with the floating plate 23, and a small portion of the later rainwater flows into the sewage tank 22 through the intercepting pipe 21. The water level in the sewage tank 22 rises again, causing the stop-flow ball 231 to block the intercepting pipe 21 again, thus allowing most of the later rainwater to be directly discharged into the river through the drainage pipe 40.
[0033] Furthermore, the ratio of the inner diameter of the sewage pipe 221 to the inner diameter of the drainage pipe 40 is between 1:3 and 1:5. It is understood that if this ratio is too large, the inner diameter of the sewage pipe 221 will be too large, resulting in an excessively large sewage flow rate in the sewage tank 22, insufficient to maintain a high water level in the tank, affecting the separation of initial and subsequent rainwater runoff, and causing a large amount of subsequent rainwater to be discharged to the sewage treatment plant. If the ratio is too small, the inner diameter of the sewage pipe 221 will be too small, resulting in an insufficient sewage flow rate in the sewage tank 22, reducing sewage discharge efficiency. After multiple tests, this ratio is controlled within the range of 1:1.5 to 1:6, which can accommodate both the requirements of separation effect and sewage discharge efficiency. Preferably, the ratio of the inner diameter of the sewage pipe 221 to the inner diameter of the drainage pipe 40 is between 1:3 and 1:5. Those skilled in the art can set the ratio to 1:3, 1:2.5, 1:4, 1:4.5, 1:5, etc., and no single limit is set here.
[0034] Please see Figure 4 The horizontal cross-sectional shape of the floating plate 23 is consistent with the horizontal cross-sectional shape of the inner cavity of the sewage tank 22, and the horizontal cross-sectional area of the floating plate 23 is equal to the horizontal cross-sectional area of the inner cavity of the sewage tank 22. This arrangement serves a positioning function, ensuring that the floating plate 23 does not shift within the sewage tank 22 and floats or moves relatively smoothly, thereby ensuring that the flow-stopping ball 231 does not shift and can cooperate with the flow-stopping pipe 21.
[0035] Furthermore, a drain hole 233 is provided vertically through the floating plate 23. The drain hole 233 prevents rainwater flowing into the sewage tank 22 from being blocked by the floating plate 23 and unable to flow smoothly to the bottom of the floating plate 23, so as to ensure that the floating plate 23 can float up or down smoothly with the rise and fall of the water level in the sewage tank 22.
[0036] More specifically, in this embodiment, an airbag 232 is connected to the lower surface of the floating plate 23. The airbag 232 can effectively increase the buoyancy of the floating plate 23 in the water, so that the floating plate 23 can float or move more sensitively with the rise and fall of the water level in the sewage tank 22. The airbag 232 has a connecting hole 234 through the drain hole 233, and rainwater can flow through the drain hole 233 and the connecting hole 234 to the area below the floating plate 23 and the airbag 232.
[0037] Please see Figure 3 , Figure 5 and Figure 6 In this embodiment, the first filter layer 31, the second filter layer 32, and the third filter layer 33 are respectively a gravel layer, an activated carbon layer, and a porous fiber cotton layer. The gravel layer, the activated carbon layer, and the porous fiber cotton layer constitute a three-stage filtration system. The gravel layer can intercept large particulate impurities, the activated carbon layer can adsorb organic pollutants, and the porous fiber cotton layer can filter suspended particles, thus avoiding the problem of reduced drainage efficiency caused by impurities clogging the drain pipe 40.
[0038] The filter assembly 30 also includes a mounting bracket 34 and three filter frames 35. The mounting bracket 34 is fixed inside the drain tank 10. The three filter frames 35 are detachably stacked on the mounting bracket 34, with the first filter layer 31, the second filter layer 32, and the third filter layer 33 each laid within a filter frame 35. The detachable filter frames 35 allow operators to easily replace or clean the filter media of each filter layer.
[0039] Furthermore, the side wall of the mounting bracket 34 is recessed vertically downwards with an opening 341, and the side wall of the filter frame 35 is protruding horizontally with a limiting block 351 that mates with the opening 341. The upper surface of the limiting block 351 is provided with a pull handle 352. The operator can pull out the filter frame 35 by pulling the pull handle 352, making it convenient for the operator to replace or clean the filter media of each filter layer.
[0040] More specifically, the lower surface of the limiting block 351 is recessed with a relief groove (not shown in the figure), which is used to accommodate the pull handle 352 of the lower filter frame 35.
[0041] The working principle of the road stormwater drainage structure based on ecological corridor construction provided by this utility model is as follows:
[0042] (1) Rainwater flows into the drain trough 10, and the interception net 11 intercepts the leaves and larger impurities in the rainwater. Then, the rainwater flows through the first filter layer 31, the second filter layer 32, and the third filter layer 33 in sequence, and then flows into the drain pipe 40.
[0043] (2) Initial rainwater flows into sewage tank 22 through interceptor pipe 21. When sewage tank 22 is full of initial rainwater, the stop ball 231 floats up with the floating plate 23 and floats into interceptor pipe 21. Interceptor pipe 21 is blocked, and drainage pipe 40 is not connected to sewage tank 22. Then, subsequent rainwater is directly discharged into the river through drainage pipe 40. At this time, the initial rainwater in sewage tank 22 is continuously discharged to the sewage treatment plant at a low flow rate through sewage pipe 221. As the water level in sewage tank 22 decreases... As the water level drops, the stop ball 231 moves down with the floating plate 23, and a small portion of the later rainwater will flow into the sewage tank 22 through the intercepting pipe 21. The water level in the sewage tank 22 will rise again so that the stop ball 231 will block the intercepting pipe 21 again, thereby allowing most of the later rainwater to be discharged directly into the river through the drain pipe 40. When the rainwater in the sewage tank 22 is emptied, the stop ball 231 will detach from the intercepting pipe 21, and the intercepting pipe 21 will be in a connected state, and the drain pipe 40 will be connected to the sewage tank 22.
[0044] The advantages of the road stormwater drainage structure based on ecological corridor construction provided by this utility model include:
[0045] (1) It achieves interception and diversion of initial rainwater, thus preventing initial rainwater from entering the river and causing water pollution.
[0046] (2) It effectively filters impurities in rainwater, preventing blockage of the drainage structure.
[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A road rainwater discharge structure based on ecological corridor construction, provided on a road, comprising a downspout (10), a top of the downspout (10) is provided with an intercepting net (11), and a bottom of the downspout (10) is provided with a drain pipe (40) leading to a river channel in communication, characterized in that, The middle part of the drain pipe (40) is connected with a shunt assembly (20), the shunt assembly (20) comprises a intercepting pipe (21), a sewage tank (22) and a floating plate (23), one end of the intercepting pipe (21) is communicated with the middle part of the drain pipe (40), the other end of the intercepting pipe (21) is communicated with the sewage tank (22), the side wall of the sewage tank (22) is provided with a sewage pipe (221) leading to a sewage treatment plant, the floating plate (23) is arranged in the sewage tank (22) and can float up and down according to the water level in the sewage tank (22), the upper surface of the floating plate (23) is provided with a stop ball (231), the stop ball (231) cooperates with the intercepting pipe (21), the sink (10) is provided with a filter assembly (30), the filter assembly (30) comprises a first filter layer (31), a second filter layer (32) and a third filter layer (33), the first filter layer (31), the second filter layer (32) and the third filter layer (33) are arranged in the sink (10) from top to bottom.
2. The road rainwater discharge structure based on the construction of an ecological corridor according to claim 1, wherein, The diameter of the stop ball (231) is equal to the inner diameter of the intercepting pipe (21). 3.The road rainwater discharge structure based on the ecological corridor construction of claim 1, wherein, The inner diameter of the intercepting pipe (21) is greater than or equal to the inner diameter of the drain pipe (40).
4. The road rainwater discharge structure based on the construction of an ecological corridor according to claim 3, wherein, The inner diameter of the sewage pipe (221) is less than the inner diameter of the drain pipe (40).
5. The road rainwater discharge structure based on the construction of an ecological corridor according to claim 4, wherein The ratio of the inner diameter of the sewage pipe (221) to the inner diameter of the drain pipe (40) ranges from 1:3 to 1:
5.
6. The road rainwater discharge structure based on the construction of an ecological corridor according to claim 1, wherein The cross-sectional shape of the floating plate (23) along the horizontal direction is consistent with the cross-sectional shape of the inner cavity of the sewage tank (22) along the horizontal direction, and the cross-sectional area of the floating plate (23) along the horizontal direction is equal to the cross-sectional area of the inner cavity of the sewage tank (22) along the horizontal direction.
7. The road rainwater discharge structure based on the construction of an ecological corridor according to claim 6, wherein The drain hole (233) is vertically arranged on the floating plate (23). 8.The road rainwater discharge structure based on the ecological corridor construction of claim 1, wherein, The first filter layer (31), the second filter layer (32) and the third filter layer (33) are respectively a gravel layer, an activated carbon layer and a porous fiber cotton layer. 9.The road rainwater discharge structure based on the ecological corridor construction of claim 1, wherein, The filter assembly (30) further comprises a mounting frame (34) and three filter frames (35), the mounting frame (34) is fixed in the sink (10), the three filter frames (35) are detachably arranged on the mounting frame (34), and the first filter layer (31), the second filter layer (32) and the third filter layer (33) are respectively arranged in one filter frame (35). 10.The road rainwater discharge structure based on the ecological corridor construction of claim 9, wherein, The side wall of the mounting frame (34) is vertically concave and provided with an opening (341), the side wall of the filter frame (35) is horizontally convex and provided with a limiting block (351) matched with the opening (341), and the upper surface of the limiting block (351) is provided with a pull handle (352).