Urban road rain and sewage treatment structure

Abstract

The application relates to a rainwater and sewage treatment structure for urban roads, belonging to the technical field of urban construction and construction, which comprises a prefabricated concrete shaft and a kerb slot body, the kerb slot body being fixedly arranged at one end of the prefabricated concrete shaft; a vertical drainage plate is arranged on one side of the kerb slot body, and the top of the vertical drainage plate is rotationally connected with the kerb slot body; a plane drainage plate is fixedly arranged on the other end of the prefabricated concrete shaft, the prefabricated concrete shaft is internally provided with a first hanging basket and a second hanging basket, two groups of separated driving structures are arranged in the first hanging basket, and the two groups of separated driving structures are arranged on the two sides of the first hanging basket; the first hanging basket is detachably connected with the second hanging basket; a plurality of first water leakage groove holes are arranged on the vertical drainage plate, and a plurality of second water leakage groove holes are arranged on the plane drainage plate; the application has the technical effects of self-adaptive expansion of the water passing area according to the water collection amount, effective avoidance of the drainage lagging behind the road surface water during the rainstorm period and realization of the separation and collection of sundries.

Description

Technical Field

[0001] This application relates to the technical field of urban construction, and in particular to a stormwater and sewage treatment structure for urban roads. Background Technology

[0002] As the scale of urban road network construction continues to expand and the area of ​​hardened urban road surfaces continues to increase, rainwater carrying fallen leaves, gravel, slag and other debris quickly accumulates to form road runoff after rainfall. Municipal road stormwater and sewage collection wells have become key infrastructure for runoff collection and preliminary separation of sewage and waste. After preliminary treatment in the collection wells, road stormwater is discharged into the municipal pipe network. Therefore, the drainage efficiency and debris interception capacity of stormwater and sewage collection structures directly affect the workload of urban road flood prevention and pipe network operation and maintenance during the flood season.

[0003] Existing urban road storm and sewage wells mostly adopt a structure of fixed well body with a single well opening bar screen. The bar screen blocks large debris from the road surface, and rainwater flows into the well body through the bar screen holes and is discharged from the bottom pipe. Conventional bar screens can only allow water to pass through with fixed apertures and cannot adaptively adjust the water passage area according to the instantaneous rainfall. Moreover, most well bodies are equipped with an integrated interception bar screen and an integrated drive component, with water, debris and moving parts in the same chamber, and debris can easily come into contact with the drive component.

[0004] Regarding the aforementioned technologies, the inventors believe that they suffer from drawbacks such as the fixed water flow area under high-flow conditions leading to drainage lag and road surface water accumulation, and the inability to achieve easy separation and collection. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a structure for treating stormwater and sewage on urban roads.

[0006] This application provides a stormwater and sewage treatment structure for urban roads, which adopts the following technical solution: A stormwater and sewage treatment structure for urban roads includes a precast concrete manhole and a curbstone trough. The curbstone trough is fixedly installed at one end of the precast concrete manhole. A vertical drainage plate is provided on one side of the curbstone trough, and the top of the vertical drainage plate is rotatably connected to the curbstone trough. A flat drainage plate is fixedly installed on the other end of the precast concrete manhole. A first hanging basket and a second hanging basket are provided inside the precast concrete manhole. Two sets of separation drive structures are provided in the first hanging basket, and the two sets of separation drive structures are respectively arranged on both sides of the first hanging basket. The separation drive structure includes a floating cavity and a drive mechanism slidably installed in the floating cavity. The floating cavity is composed of a filter screen. The first hanging basket and the second hanging basket are detachably connected. Multiple sets of first drainage grooves are provided on the vertical drainage plate, and multiple sets of second drainage grooves are provided on the flat drainage plate.

[0007] By adopting the above technical solution, normal rainwater is dispersed and enters through the first drainage groove of the facade drainage board and the second drainage groove of the planar drainage board. This multi-point water distribution disperses the impact force of the collected water, avoiding short-term water surges and turbulent disturbance of sediment inside the well shaft caused by concentrated water inflow at a single point, thus improving the stability of rainwater inflow. The facade drainage board adopts a top-hinged installation method, allowing controlled opening and rotation during heavy rain. In addition to seepage through the first and second drainage grooves, an open water passage is added, significantly increasing the drainage capacity during heavy rain, meeting the drainage needs of urban roads with short-term heavy rainfall and large water volumes, and effectively preventing road flooding. The separate drive structure separates the floating cavity from the drive... The mechanism is divided into zones, using filters to achieve water flow and debris interception, effectively preventing debris from entering moving parts, preventing the mechanism from jamming, and making operation more stable. The precast concrete well is equipped with a first hanging basket and a second hanging basket. The separate drive structure enables the first and second hanging baskets to separate and collect rainwater, sewage, and debris, and to intercept rainwater-carried solid waste such as fallen leaves and gravel from the road surface in stages, reducing the amount of debris falling directly into the bottom of the well and causing blockage of the sewage outlet. The first and second hanging baskets are detachable and can be removed separately for centralized removal of debris during inspection and maintenance. Two sets of separate drive structures are symmetrically arranged on both sides of the first hanging basket, with synchronous drive on both sides to balance the force and control the opening and closing of the facade drainage board.

[0008] Preferably, the driving mechanism includes a float and a driving rod; the floating cavity is fixed to one side of the first hanging basket, and a partition is provided in the floating cavity to divide the floating cavity into a floating area and a sliding area. The float is slidably disposed in the floating area, and the driving rod passes through the sliding area. One end of the driving rod is fixedly connected to the float, and the other end of the driving rod extends to the outside of the floating cavity.

[0009] By adopting the above technical solution, the partition divides the floating cavity into a floating area and a sliding area, realizing the partitioned arrangement of the float's floating space and the drive rod's passage space. The water acts on the float in the floating area, which can prevent debris and floating dirt from entering the well. The drive rod slides by relying on the buoyancy generated by the float's water level change. The float is limited to sliding vertically along the cavity within the floating area. The running trajectory is constrained, the float's lifting and lowering stroke is stable, and it accurately follows the water level change to drive the drive rod to extend or retract synchronously. The floating cavity is fixed to the side wall of the first hanging basket. By collecting the water accumulated in the first and second hanging baskets, the water inlet collection path is concentrated, and the water quickly fills the floating area, shortening the time for the float to respond to changes in the water level.

[0010] Preferably, the floating area and sliding area inside the floating cavity are connected to the first and second hanging baskets through the filter screen of the floating cavity.

[0011] By adopting the above technical solution, the floating cavity adopts a filter screen structure as a whole. The water in the first and second hanging baskets flows smoothly into the floating zone through the filter screen, ensuring that the water level can change synchronously and the float can sense the rise and fall of the liquid level in time, ensuring that the buoyancy drive mechanism responds sensitively. Solid debris such as leaves and mud are intercepted by the filter screen and cannot enter the floating cavity to block the float and drive rod, which greatly reduces the probability of jamming and failure of the separation drive structure. The floating zone and sliding zone are interconnected with the first and second hanging baskets through the filter screen, and the filter screen has the dual function of water passage and filtration.

[0012] Preferably, the other end of the drive rod is provided with an opening assembly, which includes a linkage mechanism and a lever mechanism; the lever mechanism is disposed inside the precast concrete well cylinder, and the linkage mechanism is located below the vertical drainage board and the horizontal drainage board; one end of the linkage mechanism is rotatably disposed at the other end of the drive rod, and the other end of the linkage mechanism is rotatably connected to the lever mechanism.

[0013] Preferably, the lever mechanism includes a support rod and a lever. The support rod is fixed on the precast concrete well cylinder, one end of the lever is rotatably disposed at the bottom of the support rod, and the other end of the lever abuts against the vertical drainage board.

[0014] By adopting the above technical solution, the support rod is fixed to the inner wall of the precast concrete well cylinder, and stable support is achieved by relying on the well cylinder body. The structure is fixed and reliable, and can provide a stable rotation fulcrum for the actuating rod. One end of the actuating rod is hinged to the bottom end of the support rod, and the other end of the actuating rod abuts against the vertical drainage board. The rotational torque of the actuating rod is directly converted into the pushing force on the vertical drainage board. The float can lift and lower to open or close the vertical drainage board. The fulcrum is set at the bottom of the support rod. The lever arm structure is reasonably optimized, and the vertical drainage board is opened with a smaller connecting rod driving force, reducing the water level height required for the float to float.

[0015] Preferably, the linkage mechanism includes a connecting rod, a first connecting rod, a second connecting rod, and a rotating shaft. One end of the connecting rod is rotatably connected to the other end of the drive rod, and the rotating shaft is rotatably connected to the other end of the connecting rod. One end of the first connecting rod is rotatably connected to the actuating rod, and the other end of the first connecting rod is rotatably connected to the rotating shaft. One end of the second connecting rod is rotatably connected to the support rod, and the other end of the second connecting rod is rotatably connected to the rotating shaft.

[0016] By adopting the above technical solution, a linkage transmission structure is formed by a connecting rod, a first connecting rod, a second connecting rod, and a rotating shaft. The second connecting rod is hinged to the support rod to form a fixed limiting fulcrum, which can constrain the motion of the rotating shaft. This smoothly transforms the linear push-pull motion of the drive rod into the rotational motion of the actuating rod, resulting in a stable transmission trajectory. The second connecting rod, relying on the support rod, forms a support limit and, together with the first connecting rod, forms a dual-point constraint on the rotating shaft, effectively limiting the displacement range of the rotating shaft. This ensures that the entire linkage can accurately return to its original position after the drive rod retracts, thereby allowing the actuating rod to smoothly release force. The facade drainage board can reliably close under its own weight, ensuring the stability of the mechanism during repeated start-stop and reset.

[0017] Preferably, the floating cavities in one set of the separation drive structure and the floating cavities in another set of the separation drive structure are provided with a snap-fit ​​plate at their lower parts, and the two sets of floating cavities and the snap-fit ​​plate constitute a snap-fit ​​area.

[0018] By adopting the above technical solution, two floating cavities are used in conjunction with a bottom snap-fit ​​plate to form a snap-fit ​​area. The two floating cavities on both sides serve as the main body for limiting the left and right sides of the snap-fit ​​area, and the snap-fit ​​plate serves as the bottom support. After the snap-fit ​​part of the second hanging basket is fitted together, the assembly gap is small. The first and second hanging baskets are not easy to shake or shift under the impact of water flow, which ensures the relative position stability of the hanging basket and the separation drive structure. It also avoids the first and second hanging baskets from shifting and bumping into the floating cavities, interfering with the normal rise and fall of the float. It is also convenient to disassemble and remove the second hanging basket to clean up accumulated garbage, and the inspection and maintenance are convenient.

[0019] Preferably, one end of the second hanging basket is provided with a snap-fit ​​part, which cooperates with the snap-fit ​​area.

[0020] By adopting the above technical solution, the second hanging basket can be quickly assembled and disassembled by relying on the snap-fit ​​between the snap-fit ​​part and the snap-fit ​​area. Later, the second hanging basket can be easily removed to clean the fallen leaves, sand and gravel trapped inside the basket, resulting in high maintenance efficiency. The snap-fit ​​part and the snap-fit ​​area are matched to limit the lateral and vertical displacement of the second hanging basket after assembly. The hanging basket is not easy to shift or shake under the scouring and disturbance of water flow, ensuring that the relative position of the second hanging basket with the floating cavities on both sides and the filter screen remains unchanged, and ensuring that the water can pass through the filter screen normally.

[0021] Preferably, the upper sidewalls of the first and second hanging baskets are provided with multiple sets of drainage holes; the bottom of the second hanging basket is provided with a drain outlet.

[0022] By adopting the above technical solution, the side walls of the first and second hanging baskets are provided with water leakage holes, and the bottom of the second hanging basket is provided with a drain outlet, forming a dual-channel drainage system of side wall overflow and bottom direct discharge; rainwater is preferentially discharged through the drain outlet at the bottom of the second hanging basket; when the water inflow increases, excess water can overflow and be discharged through the side wall water leakage holes.

[0023] Preferably, the bottom of the precast concrete well is provided with multiple sets of sewage outlets in the circumferential direction.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The partition divides the floating cavity into a floating zone and a sliding zone, realizing the partitioned arrangement of the float's floating space and the drive rod's passage space. Water acts on the float in the floating zone, which can prevent debris and floating dirt from entering the well. The drive rod slides by relying on the buoyancy generated by the float's water level change. The float is confined to the floating zone and slides vertically along the cavity. The running trajectory is limited and constrained. The float's lifting and lowering stroke is stable and accurately follows the water level change to drive the drive rod to extend or retract synchronously. The floating cavity is fixed to the side wall of the first hanging basket. By collecting the water accumulated in the first and second hanging baskets, the water inlet collection path is concentrated, and the water quickly fills the floating zone, shortening the time for the float to respond to changes in the water level.

[0025] 2. The support rod is fixed to the inner wall of the precast concrete well cylinder, relying on the well cylinder body to achieve stable support. The structure is firmly fixed and can provide a stable fulcrum for the actuating rod. One end of the actuating rod is hinged to the bottom of the support rod, and the other end of the actuating rod abuts against the vertical drainage board. The rotational torque of the actuating rod is directly converted into the pushing force on the vertical drainage board. The float can open or close the vertical drainage board by raising and lowering. The fulcrum is set at the bottom of the support rod. The lever arm structure is reasonably optimized to drive the vertical drainage board to open with a smaller connecting rod driving force, reducing the water level height required for the float to float. Attached Figure Description

[0026] Figure 1 This is a cross-sectional schematic diagram of the overall structure when the water inflow is relatively small in the embodiment.

[0027] Figure 2 This is a cross-sectional schematic diagram of the overall structure when the water inflow is large in the embodiment.

[0028] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0029] Figure 4 This is a schematic diagram of the structure of the first and second hanging baskets in the embodiment.

[0030] Figure 5 This is a structural schematic diagram of the vertical drainage board and the horizontal drainage board in the embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Precast concrete well shaft; 11. Sewage outlet; 2. Curbstone trough; 3. Vertical drainage board; 31. First drainage groove hole; 4. Planar drainage board; 41. Second drainage groove hole; 5. First hanging basket; 51. Snap-fit ​​plate; 52. Snap-fit ​​area; 6. Second hanging basket; 61. Snap-fit ​​part; 62. Drainage outlet; 7. Separation drive structure; 71. Floating cavity; 711. Partition plate; 712. Floating area; 713. Sliding area; 72. Drive mechanism; 721. Float ball; 722. Drive rod; 8. Opening assembly; 81. Linkage mechanism; 811. Connecting rod; 812. First connecting rod; 813. Second connecting rod; 814. Rotating shaft; 82. Toggle mechanism; 821. Support rod; 822. Toggle rod; 9. Drainage through hole. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses an urban road stormwater and sewage treatment structure. (Refer to...) Figure 1-5 The system includes a precast concrete manhole 1 and a curbstone trough 2. The curbstone trough 2 is fixedly installed at one end of the precast concrete manhole 1. A vertical drainage board 3 is installed on one side of the curbstone trough 2, and the top of the vertical drainage board 3 is rotatably connected to the curbstone trough 2. A flat drainage board 4 is fixedly installed on the other end of the precast concrete manhole 1. A first hanging basket 5 and a second hanging basket 6 are installed inside the precast concrete manhole 1. Two sets of separation drive structures 7 are installed inside the first hanging basket 5, and the two sets of separation drive structures 7 are respectively installed on both sides of the first hanging basket 5. The drive structure 7 includes a floating cavity 71 and a drive mechanism 72 slidably disposed in the floating cavity 71. The floating cavity 71 is composed of a filter screen. The first hanging basket 5 and the second hanging basket 6 are detachably connected. The vertical drainage plate 3 is provided with multiple sets of first drainage groove holes 31, and the flat drainage plate 4 is provided with multiple sets of second drainage groove holes 41. The precast concrete well cylinder 1 is cast and formed using C35P8 impermeable concrete, which has high strength and meets the impermeability standard. It is suitable for underground damp and long-term sewage soaking conditions, and effectively prevents well cylinder water seepage and structural cracking.

[0034] Reference Figure 1 , Figure 2 and Figure 5The top of the facade drainage board 3 and the curbstone trough 2 are hinged, allowing the facade drainage board 3 to rotate and open around the hinge point. Multiple sets of first drainage holes 31 on the facade drainage board 3 are used for normal rainwater infiltration from the curb side. A flat drainage board 4 is fixedly installed at the other end of the precast concrete manhole 1. The flat drainage board 4 collects surface water from the road surface through multiple sets of second drainage holes 41 on its surface. Rainwater from the road surface flows into the precast concrete manhole 1 through the first drainage holes 31 of the facade drainage board 3 and the second drainage holes 41 of the flat drainage board 4. Inside the cavity; the precast concrete well cylinder 1 is equipped with a first hanging basket 5 and a second hanging basket 6, and water flows into the first hanging basket 5 and the second hanging basket 6; two sets of separation drive structures 7 are respectively set on both sides of the first hanging basket 5. The separation drive structure 7 controls the flipping action of the facade drainage board 3 by the change of the water level in the first hanging basket 5 and the second hanging basket 6; the water that has been buffered and filtered by the first hanging basket 5 and the second hanging basket 6 is discharged to the underground pipe network from multiple sets of sewage outlets 11 arranged circumferentially at the bottom of the precast concrete well cylinder 1, thus completing the rainwater collection and discharge.

[0035] Reference Figure 1 , Figure 2 and Figure 4 The drive mechanism 72 includes a float 721 and a drive rod 722. A floating cavity 71 is fixedly mounted on one side of the first hanging basket 5. A partition 711 is provided inside the floating cavity 71, dividing it into a floating area 712 and a sliding area 713. The float 721 is slidably disposed within the floating area 712. The drive rod 722 passes through the sliding area 713, with one end fixedly connected to the float 721 and the other end extending to the outside of the floating cavity 71. The floating cavity 71 is fixedly installed on the side wall of the first hanging basket 5. The interior of the floating cavity 71 is divided into the floating area 712 and the sliding area 713 by the partition 711. The float 721 is positioned within the floating area 712 and slides up and down along the floating area 712 following changes in the liquid level. The drive rod 722 is longitudinally arranged through the sliding area 713, with one end connected to the float 721. The float 721 is fixedly connected to the other end of the drive rod 722, which extends out of the floating cavity 71. After the water enters the floating area 712 of the floating cavity 71 from the first basket 5, the rise and fall of the water level in the floating area 712 changes the buoyancy of the float 721: when the water level in the floating area 712 rises, the buoyancy pushes the float 721 to move upward in the floating area 712, and the float 721 synchronously drives the fixed drive rod 722 to extend outward along the sliding area 713. After the water level in the floating area 712 drops, the float 721 falls by its own weight, pulling the drive rod 722 back into the floating cavity 71 along the sliding area 713. This converts the buoyancy rise and fall displacement of the float 721 into the linear motion of the drive rod 722 extending and retracting. The float 721 is made of PE (polyethylene), which has low density, stable buoyancy, is resistant to acid and alkali corrosion, is not easy to age and deform, and has reliable performance in long-term underwater operation.

[0036] Reference Figure 1 , Figure 2 and Figure 4 The floating cavity 71 is composed of a filter screen made of PP (polypropylene) material, which has excellent water permeability, is resistant to silt abrasion, and is highly resilient, capable of intercepting debris for a long time without easily breaking. The floating area 712 and sliding area 713 inside the floating cavity 71 are connected to the first hanging basket 5 and the second hanging basket 6 through the filter screen. The floating cavities 71 in one set of separation drive structures 7 and the floating cavities 71 in another set of separation drive structures 7 are provided with a snap-fit ​​plate 51 at their lower parts, and the two sets of floating cavities 71 and the snap-fit ​​plate 51 constitute a snap-fit ​​area 52. One end of the second hanging basket 6 A snap-fit ​​part 61 is provided, which cooperates with the snap-fit ​​area 52; multiple sets of drainage holes 9 are provided on the upper sidewalls of the first hanging basket 5 and the second hanging basket 6; a drain outlet 62 is provided at the bottom of the second hanging basket 6; the floating cavity 71 is made entirely of a filter screen, and the floating cavity 71 is connected to the inner cavity of the first hanging basket 5 and the second hanging basket 6 through its own filter screen. The snap-fit ​​part 61 is provided with multiple sets of water inlet holes. When the first hanging basket 5 and the second hanging basket 6 are installed with the snap-fit ​​part 61 and the snap-fit ​​area 52, the first hanging basket 5 is connected to the filter screen of the separation drive structure 7 and the snap-fit ​​part 61. Multiple sets of water inlets on part 61 are connected to the second hanging basket 6; rainwater flowing into the first hanging basket 5 and the second hanging basket 6 can pass through the filter screen and enter the floating cavity 71. The water is guided to the floating cavity 71 by the filter screen, and suspended impurities are blocked by the filter screen in the first hanging basket 5 and the second hanging basket 6, and cannot enter the floating area 712 and sliding area 713 of the floating cavity 71; the lower ends of the two floating cavities 71 located on both sides of the first hanging basket 5 are fixed with snap-fit ​​plates 51, and the two floating cavities 71 and the snap-fit ​​plates 51 together form a snap-fit ​​area 52; the end of the second hanging basket 6 is provided with a snap-fit ​​plate... The connecting part 61 cooperates with the snap-fit ​​area 52, and the snap-fit ​​of the connecting part 61 and the snap-fit ​​area 52 enables the second hanging basket 6 to be detachably connected with the first hanging basket 5, which is convenient for later disassembly, removal and cleaning of accumulated debris; several sets of water leakage holes 9 are opened on the upper side walls of the first hanging basket 5 and the second hanging basket 6, and some of the rainwater in the first hanging basket 5 and the second hanging basket 6 overflows and diffuses into the inner cavity of the precast concrete well cylinder 1 through the water leakage holes 9; the remaining rainwater collected inside the second hanging basket 6 is discharged downward through the drain outlet 62 opened at the bottom of the second hanging basket 6, realizing multi-channel drainage of water.

[0037] Reference Figure 1 , Figure 2 and Figure 3The other end of the drive rod 722 is provided with an opening assembly 8, which includes a linkage mechanism 81 and a lever mechanism 82. The lever mechanism 82 and the linkage mechanism 81 are disposed inside the precast concrete well cylinder 1. The linkage mechanism 81 is located below the vertical drainage board 3 and the horizontal drainage board 4. One end of the linkage mechanism 81 is rotatably disposed at the other end of the drive rod 722, and the other end of the linkage mechanism 81 is rotatably connected to the lever mechanism 82. The lever mechanism 82 includes a support rod 821 and a lever 822. The support rod 821 is fixed to the precast concrete well cylinder 1, and one end of the lever 822 is rotatably disposed at the bottom of the support rod 821. The other end of the lever 822 abuts against the vertical drainage board 3. Mechanism 81 includes a connecting rod 811, a first connecting rod 812, a second connecting rod 813, and a rotating shaft 814. One end of the connecting rod 811 is rotatably connected to the other end of the drive rod 722, and the rotating shaft 814 is rotatably connected to the other end of the connecting rod 811. One end of the first connecting rod 812 is rotatably connected to the actuating rod 822, and the other end of the first connecting rod 812 is rotatably connected to the rotating shaft 814. One end of the second connecting rod 813 is rotatably connected to the support rod 821, and the other end of the second connecting rod 813 is rotatably connected to the rotating shaft 814. The connecting rod mechanism 81 and the actuating rod mechanism 82 are made of stainless steel, which is rust-proof, corrosion-resistant, has high mechanical strength, and can rotate repeatedly without jamming, resulting in a long service life.

[0038] Reference Figure 1 , Figure 2 and Figure 3The water inflow is too large, and the accumulated water cannot be discharged from the drain outlet 62 at the bottom of the second hanging basket 6 in time. The water enters the floating area 712 of the floating cavity 71 through the filter screen of the floating cavity 71. The water level in the floating area 712 rises, pushing the float 721 to float. The float 721 drives the drive rod 722 to extend outward along the sliding area 713. The outward movement of the drive rod 722 causes the connecting rod 811 to shift. The connecting rod 811 pulls the rotating shaft 814 to shift its position. Due to the constraint of the second connecting rod 813 hinged to the support rod 821, the second connecting rod 813 swings around the hinge point, which simultaneously drives the first connecting rod 812 to pull the actuating rod 822. One end of the actuating rod 822 rotates around the rotating shaft 814 on the support rod 821, and the other end of the actuating rod 822 pushes the vertical drainage plate 3. The facade drainage board 3 rotates and opens, expanding the water inlet area of ​​the well and directly flowing into the precast concrete well 1. All debris settles and remains in the inner cavity of the first hanging basket 5 for centralized interception. After the water flow decreases, the drainage rate of the drainage outlet 62 of the second hanging basket 6 is greater than the water inlet rate. The water level in the first hanging basket 5, the second hanging basket 6, and the floating cavity 71 gradually decreases. The float 721 falls along the floating area 712 by its own weight, driving the drive rod 722 to retract into the floating cavity 71. The retraction of the drive rod 722 causes the connecting rod 811 to move in the opposite direction, driving the rotating shaft 814, the first connecting rod 812, and the second connecting rod 813 to swing back to their initial positions in sequence. The actuating rod 822 then rotates and retracts. After the facade drainage board 3 loses its pushing force, it falls back and closes, resetting to the normal water flow state.

[0039] The facade drainage board 3 and the planar drainage board 4 form a dual-path redundant drainage system. The dual-guide design increases the cross-sectional area of ​​the water passage by approximately 40%. When the second drainage channel 41 of the planar drainage board 4 is blocked by fallen leaves or debris, the first drainage channel 31 of the facade drainage board 3 can still drain water normally, significantly improving drainage reliability. The drainage capacity can be calculated using the total drainage flow formula.

[0040] In the formula, Total drainage flow ( ); The drainage flow rate of the second drain hole 41 of the flat drainage plate 4; The first drainage groove hole 31 of the facade drainage board 3; The flow coefficient is 0.60 for the second drainage groove of the planar drainage board and 0.65 for the first drainage groove 31 of the vertical drainage board 3. The cross-sectional area of ​​the hydrostatic flow channel ( ), The cross-sectional area of ​​the overflow ( ); For pressure-driven head ( ); The effect of velocity on head ( ); The acceleration due to gravity (9.8) ).

[0041] The working principle of the urban road stormwater and sewage treatment structure in this application is as follows: Under normal conditions, rainwater from the road surface seeps into the well shaft through the first drainage groove 31 of the vertical drainage plate 3 and the second drainage groove 41 of the horizontal drainage plate 4, and falls into the first hanging basket 5 and the second hanging basket 6. Part of the rainwater in the first hanging basket 5 and the second hanging basket 6 overflows and disperses through the side wall drainage holes 9, and the remaining water is discharged from the bottom drainage outlet 62 of the second hanging basket 6. Excess water is finally discharged into the pipe network through the sewage outlet 11. Debris carried into the road surface by the water flow is also discharged. The water is trapped in the first hanging basket; the floating cavity 71 relies on the filter screen to achieve water communication between the first hanging basket 5 and the second hanging basket 6, and the water flows smoothly into the floating area 712 of the floating cavity 71, while the debris is blocked and retained by the filter screen; under low-flow water inlet conditions, the drainage capacity of the drain outlet 62 can match the water inlet speed, the water level in the floating area 712 is low, the float ball 721 remains low and stationary, the opening assembly 8 composed of the entire linkage and lever does not move, the vertical drainage plate 3 remains closed, and water is continuously permeated and drained only through the various leakage channels; when heavy rain causes a surge in water inlet... At this time, the inflow rate exceeds the drainage load of the second hanging basket 6 drainage outlet 62, the water level continues to rise and flows through the filter screen into the floating area 712. The rising water level relies on buoyancy to lift the float 721 to the surface. The float 721 drives the drive rod 722 to extend outward, and through the linkage mechanism 81, the drive rod 822 rotates to lift the vertical drainage plate 3. After the vertical drainage plate 3 flips open, it greatly widens the water inlet channel. A large amount of accumulated water, along with fallen leaves and debris from the road surface, flows directly into the well and is collected in the first hanging basket 5, thus expanding the drainage capacity. It enables rapid drainage of large-volume rainwater; after the rainfall weakens and the inflow rate drops, the outflow efficiency of the drain outlet 62 is higher than the inflow rate, the system water level gradually decreases, the float 721 falls to its reset position by its own weight and pulls the drive rod 722 to retract and reset, the actuating rod 822 removes the supporting force on the facade drainage plate 3, the facade drainage plate 3 falls back and closes, and the device switches back to the normal drainage state; the first hanging basket 5 and the second hanging basket 6 adopt a snap-fit ​​detachable assembly structure, which can be removed separately in the later stage for unified cleaning of accumulated and intercepted garbage and debris.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stormwater and sewage treatment structure for urban roads, characterized in that: The system includes a precast concrete manhole (1) and a curbstone trough (2), wherein the curbstone trough (2) is fixedly installed at one end of the precast concrete manhole (1); a vertical drainage board (3) is provided on one side of the curbstone trough (2), and the top of the vertical drainage board (3) is rotatably connected to the curbstone trough (2); a flat drainage board (4) is fixedly installed on the other end of the precast concrete manhole (1); a first hanging basket (5) and a second hanging basket (6) are provided inside the precast concrete manhole (1), and two sets of hanging baskets are provided in the first hanging basket (5). The separation drive structure (7) is provided on both sides of the first hanging basket (5). The separation drive structure (7) includes a floating cavity (71) and a drive mechanism (72) slidably disposed in the floating cavity (71). The floating cavity (71) is made of a filter screen. The first hanging basket (5) and the second hanging basket (6) are detachably connected. The vertical drainage plate (3) is provided with a plurality of first drainage groove holes (31), and the flat drainage plate (4) is provided with a plurality of second drainage groove holes (41).

2. The urban road stormwater and sewage treatment structure according to claim 1, characterized in that: The drive mechanism (72) includes a float (721) and a drive rod (722); the floating cavity (71) is fixed on one side of the first hanging basket (5), and a partition (711) is provided inside the floating cavity (71). The partition (711) divides the floating cavity (71) into a floating area (712) and a sliding area (713). The float (721) is slidably disposed in the floating area (712), and the drive rod (722) passes through the sliding area (713). One end of the drive rod (722) is fixedly connected to the float (721), and the other end of the drive rod (722) extends to the outside of the floating cavity (71).

3. The urban road stormwater and sewage treatment structure according to claim 2, characterized in that: The floating area (712) and sliding area (713) inside the floating cavity (71) are connected to the first hanging basket (5) and the second hanging basket (6) through the filter screen of the floating cavity (71).

4. The urban road stormwater and sewage treatment structure according to claim 2, characterized in that: The other end of the drive rod (722) is provided with an opening component (8), which includes a linkage mechanism (81) and a lever mechanism (82). The lever mechanism (82) is located inside the precast concrete well shaft (1), and the linkage mechanism (81) is located below the vertical drainage board (3) and the horizontal drainage board (4). One end of the linkage mechanism (81) is rotatably disposed at the other end of the drive rod (722), and the other end of the linkage mechanism (81) is rotatably connected to the lever mechanism (82).

5. The urban road stormwater and sewage treatment structure according to claim 4, characterized in that: The lever mechanism (82) includes a support rod (821) and a lever (822). The support rod (821) is fixed on the precast concrete well shaft (1). One end of the lever (822) is rotatably disposed at the bottom of the support rod (821), and the other end of the lever (822) abuts against the vertical drainage board (3).

6. The urban road stormwater and sewage treatment structure according to claim 5, characterized in that: The linkage mechanism (81) includes a connecting rod (811), a first connecting rod (812), a second connecting rod (813), and a rotating shaft (814). One end of the connecting rod (811) is rotatably connected to the other end of the drive rod (722), and the rotating shaft (814) is rotatably connected to the other end of the connecting rod (811). One end of the first connecting rod (812) is rotatably connected to the actuating rod (822), and the other end of the first connecting rod (812) is rotatably connected to the rotating shaft (814). One end of the second connecting rod (813) is rotatably connected to the support rod (821), and the other end of the second connecting rod (813) is rotatably connected to the rotating shaft (814).

7. The urban road stormwater and sewage treatment structure according to claim 1, characterized in that: A set of floating cavities (71) in one set of the separation drive structure (7) and the lower part of the floating cavities (71) in another set of the separation drive structure (7) are provided with snap-fit ​​plates (51), and the two sets of floating cavities (71) and the snap-fit ​​plates (51) constitute a snap-fit ​​area (52).

8. The urban road stormwater and sewage treatment structure according to claim 2, characterized in that: One end of the second hanging basket (6) is provided with a snap-fit ​​part (61), which cooperates with the snap-fit ​​area (52).

9. A stormwater and sewage treatment structure for urban roads according to claim 1, characterized in that: The upper sidewalls of the first hanging basket (5) and the second hanging basket (6) are provided with multiple sets of water leakage holes (9); the bottom of the second hanging basket (6) is provided with a drain outlet (62).

10. A stormwater and sewage treatment structure for urban roads according to claim 1, characterized in that: The precast concrete well shaft (1) has multiple sets of sewage outlets (11) arranged circumferentially at its bottom.

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