Rainwater and sewage diversion system for urban village reconstruction

Abstract

The utility model discloses a rainwater and sewage diversion system for village-in-city reconstruction, which comprises houses and confluence vertical pipes arranged on the houses, blow-off pipes are arranged underground roadways among the houses, a plurality of sewage inspection wells are arranged at intervals along the length direction of the blow-off pipes, the lower ends of the confluence vertical pipes are communicated with the blow-off pipes, and the lower ends of the sewage inspection wells are communicated with the houses. An annular rainwater inspection well is concentrically arranged on the outer side of the sewage inspection well, a cover plate is arranged at the upper end of the sewage inspection well, an annular rainwater grate is arranged at the upper end of the rainwater inspection well, a rainwater pipe is arranged on one side of the blow-off pipe in parallel and sequentially communicated with the rainwater inspection wells, and a rainwater vertical pipe is arranged on one side of the house. The lower end of the rainwater stand pipe communicates with a rainwater pipe. In conclusion, the rainwater and sewage diversion device has the advantages of capability of realizing rainwater and sewage diversion, high transformation efficiency and short construction period.

Description

Technical Field

[0001] This utility model relates to the field of rainwater and sewage diversion technology in urban villages, specifically to a rainwater and sewage diversion system for urban village renovation. Background Technology

[0002] Drainage systems are divided into combined sewer systems and separate sewer systems. A combined sewer system uses a single pipe system to collect and transport wastewater, while a separate sewer system uses different pipe systems to collect and transport various types of sewage, rainwater, and industrial wastewater separately. Existing urban village sewage systems are relatively simple, with most using a combined sewer system. Combined sewer risers installed on buildings collect sewage through manholes, which then discharge it through drain pipes. In this system, rainwater and sewage are discharged together without separate treatment. During periods of heavy rainfall, this can easily lead to poor drainage and flooding, while sewage can overflow from rainwater storage tanks, causing overflowing problems. Furthermore, the lack of independent collection of sewage and rainwater increases the difficulty of subsequent rainwater recycling. According to relevant Chinese regulations, newly constructed urban villages should have independent sewage collection networks at the village and household levels, ensuring that sewage does not enter rainwater pipes and rainwater minimizes its entry into sewage pipes. All sewage should be collected and treated to effectively control overflow pollution, and black and odorous water bodies within the village area should be largely eliminated. This necessitates the renovation of existing drainage systems in urban villages. However, due to the chaotic layout of houses, narrow alleyways, and limited construction space, the renovation of the entire water network is challenging and consumes significant manpower and resources. Therefore, developing a rainwater and sewage separation system for urban village renovation that can achieve rainwater and sewage separation, has high renovation efficiency, and a short construction period is objectively necessary. Utility Model Content

[0003] The purpose of this utility model is to provide a rainwater and sewage separation system for urban village renovation that can achieve rainwater and sewage separation, has high renovation efficiency, and a short construction period.

[0004] The purpose of this utility model is achieved as follows: it includes a house and a combined drain pipe installed on the house. A sewage pipe is installed underground in the alley between the houses. Several sewage inspection wells are installed at intervals along the length of the sewage pipe. The lower end of the combined drain pipe is connected to the sewage pipe. A ring-shaped rainwater inspection well is installed concentrically on the outside of the sewage inspection well. A cover plate is installed on the upper end of the sewage inspection well. A ring-shaped rainwater grate is installed on the upper end of the rainwater inspection well. A rainwater pipe is installed parallel to one side of the sewage pipe. The rainwater pipe is connected to each rainwater inspection well in sequence. A rainwater riser is installed on one side of the house. The lower end of the rainwater riser is connected to the rainwater pipe.

[0005] Furthermore, an overflow outlet is provided on the upper part of the side wall of the sewage inspection well.

[0006] Furthermore, a sealing plate is installed inside the overflow port, with the upper end of the sealing plate rotatably connected to the top of the overflow port, and a counterweight is installed at the lower part of the sealing plate.

[0007] Furthermore, the outer wall of the sewage inspection well is coated with an anti-leakage coating.

[0008] Furthermore, drainage ditches are installed on both sides of the tunnel, and filter screens are installed on the drainage ditches. The drainage ditches are connected to the rainwater inspection wells through connecting pipes.

[0009] Furthermore, the rainwater pipe is located above the sewage pipe.

[0010] This utility model is used for rainwater and sewage separation in urban village renovation. During operation, domestic sewage and kitchen wastewater are discharged through a combined riser into a sewage pipe and a sewage inspection well before being discharged. Rainwater, on the other hand, is discharged through a rainwater riser into a rainwater pipe and a rainwater inspection well. Rainwater risers, rainwater pipes, and rainwater inspection wells are added to the original sewage system specifically for rainwater collection and discharge, changing the previous method of discharging rainwater and sewage together. This avoids the mixing of rainwater and sewage, allowing for independent collection of both, facilitating subsequent sewage treatment and rainwater recycling, reducing sewage treatment volume, simplifying rainwater recycling, effectively controlling overflow pollution, and eliminating black and odorous water bodies within the village area. Furthermore, this utility model only requires modifications to the existing sewage system. The modifications can be made by adding rainwater pipes underground in the alleyways for rainwater discharge and collection, and adding rainwater downpipes on the houses to guide rainwater from the roofs. A ring-shaped rainwater inspection well is added outside the existing sewage inspection well for rainwater collection. Construction only requires excavation around the existing sewage inspection wells, making it suitable for the narrow alleyways and difficult excavation conditions in urban villages. This invention preserves and utilizes existing pipelines as much as possible during the actual renovation process, greatly saving manpower, material resources, and capital investment. The parallel horizontal arrangement of sewage and rainwater pipes is suitable for rainwater and sewage separation renovation projects in narrow alleyways of urban villages, especially those with disordered house layouts, narrow alleyways, and complex sewage collection pipelines. In summary, this invention has the advantages of achieving rainwater and sewage separation, high renovation efficiency, and short construction period. Attached Figure Description

[0011] Figure 1 This is a top view of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0013] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0014] Figure 4 for Figure 2 A magnified structural diagram of node B in the middle;

[0015] In the diagram: 1-Building, 2-Combined riser, 3-Lane, 4-Sewage pipe, 5-Sewage inspection well, 6-Rainwater inspection well, 7-Cover plate, 8-Rainwater grate, 9-Rainwater pipe, 10-Rainwater riser, 11-Overflow outlet, 12-Sealing plate, 13-Counterweight block, 14-Leak-proof coating, 15-Drainage ditch, 16-Filter screen, 17-Connecting pipe. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0017] like Figures 1-4 As shown, this utility model includes a house 1 and a combined riser 2 installed on the house 1. A sewage pipe 4 is installed underground in the alley 3 between the houses 1. Several sewage inspection wells 5 are installed at intervals along the length of the sewage pipe 4. The lower end of the combined riser 2 is connected to the sewage pipe 4. A ring-shaped rainwater inspection well 6 is installed concentrically on the outside of the sewage inspection well 5. A cover plate 7 is installed on the upper end of the sewage inspection well 5. A ring-shaped rainwater grate 8 is installed on the upper end of the rainwater inspection well 6. Water accumulated on the ground of the alley 3 can be discharged into the rainwater inspection well 6 through the rainwater grate 8. A rainwater pipe 9 is installed parallel to one side of the sewage pipe 4. The rainwater pipe 9 is connected to each rainwater inspection well 6 in sequence. A rainwater riser 10 is installed on one side of the house 1. The lower end of the rainwater riser 10 is connected to the rainwater pipe 9.

[0018] This utility model is used for rainwater and sewage separation in urban village renovation. During operation, domestic sewage and kitchen wastewater are discharged through a combined riser 2 into a sewage pipe 4 and a sewage inspection well 5 before being discharged. Rainwater, on the other hand, is discharged through a rainwater riser 10 into a rainwater pipe 9 and a rainwater inspection well 6 before being discharged. The addition of rainwater riser 10, rainwater pipe 9, and rainwater inspection well 6 to the original sewage system specifically for rainwater collection and discharge changes the original method of discharging rainwater and sewage together, avoiding the mixing of rainwater and sewage. Separate collection facilitates subsequent sewage treatment and rainwater recycling, reduces sewage treatment volume, lowers the difficulty of rainwater recycling, effectively controls overflow pollution, and eliminates the problem of black and odorous water bodies within the village area. Furthermore, this utility model only requires modifications to the existing sewage system. The renovation can be carried out by adding a rainwater pipe 9 underground in alleyway 3 for rainwater discharge and collection, adding a rainwater riser 10 on the house 1 to lead rainwater from the roof to the rainwater pipe 9, and adding a ring-shaped rainwater inspection well 6 outside the existing sewage inspection well 5 for rainwater collection. During construction, only the area around the existing sewage inspection well 5 needs to be excavated, which is suitable for the narrow alleyway 3 in urban villages where excavation is difficult. In the actual renovation process, this utility model retains and uses the original pipes as much as possible, which greatly saves manpower, material resources and capital investment. The sewage pipe 4 and rainwater pipe 9 are set up horizontally side by side, which is suitable for the rainwater and sewage separation renovation project in the narrow alleyway 3 of urban villages, especially in urban villages where the houses 1 are arranged in a disorderly manner, the alleyway 3 is relatively narrow, and the sewage collection pipes are complicated.

[0019] An overflow outlet 11 is installed on the upper part of the side wall of the sewage inspection well 5. Although the rainwater discharge capacity of the rainwater pipe 9 is sufficient for rainwater discharge under normal circumstances, there will inevitably be situations of heavy rainstorms, which will generate a large amount of water accumulation in a very short time. If it is not discharged in time, it will still threaten people's personal safety and property safety, and will also cause inconvenience to people's travel. Therefore, an overflow outlet 11 is installed on the side wall of the sewage inspection well 5. The overflow outlet 11 is located high. Under normal circumstances, rainwater and sewage do not merge. However, in the event of heavy rainstorms or other events with large amounts of rainfall, in order to prevent waterlogging, excess rainwater can be discharged into the sewage inspection well 5 through the overflow outlet 11, sharing the drainage load of the rainwater pipe 9 and ensuring that the ground does not accumulate water or become waterlogged.

[0020] An overflow outlet 11 is fitted with a sealing plate 12. The upper end of the sealing plate 12 is rotatably connected to the top of the overflow outlet 11, and a counterweight 13 is provided at the lower part of the sealing plate 12. The sealing plate 12 can rotate along its top. Under normal circumstances, under the weight of the sealing plate 12 itself and the weight of the counterweight 13, the sealing plate 12 is in a vertical position, sealing the overflow outlet 11 and preventing mosquitoes, harmful gases, and foul odors from the sewage inspection well 5 from entering the rainwater inspection well 6, thus preventing rainwater from being contaminated. Pollution occurs, but when too much water accumulates in the rainwater inspection well 6 and reaches the overflow outlet 11, the rainwater will gradually overcome the weight of the sealing plate 12 and the counterweight 13, pushing the sealing plate 12 to rotate, thereby opening the overflow outlet 11. Excess rainwater will be discharged from the overflow outlet 11 into the sewage inspection well 5. The more water there is and the higher the water level, the larger the opening formed after pushing the sealing plate 12. When the water volume in the rainwater inspection well 6 decreases and the water level drops, the sealing plate 12 can automatically close the overflow outlet 11.

[0021] The outer wall of the sewage inspection well 5 is coated with an anti-seepage coating 14. The anti-seepage coating 14 is an existing technology. After curing, the waterproof film formed by the coating has certain extensibility, elasticity, crack resistance, impermeability and weather resistance. It can play a role in waterproofing, seepage prevention and protection. It has good temperature adaptability, is easy to operate and easy to repair and maintain. On the one hand, it prevents rainwater from seeping into the sewage and increasing the sewage treatment volume. On the other hand, it prevents sewage from seeping into the rainwater and increasing the difficulty of rainwater recycling and treatment.

[0022] Drainage ditches 15 are installed on both sides of the alleyway 3, and filter screens 16 are installed on the drainage ditches 15. The drainage ditches 15 are connected to the rainwater inspection wells 6 through connecting pipes 17. This utility model collects rainwater by relying on rainwater downpipes 10 to collect rainwater from the roof of the house 1, and by relying on rainwater grates 8 installed on the ground. The water accumulated on the ground of the alleyway 3 falls into the rainwater inspection wells 6 through the rainwater grates 8. However, in actual use, it has been found that when there is a heavy rainstorm, some rainwater will fall directly from the roof onto the ground of the alleyway 3, increasing the water accumulation on the ground of the alleyway 3. In addition, due to the heavy rainfall, the instantaneous water accumulation is greater than the drainage capacity of the rainwater grates 8, which will still cause waterlogging. The water accumulation in alleyway 3 caused some waterlogging, affecting people's normal passage. To address this, drainage ditch 15 was installed. The water accumulated on the ground of alleyway 3 can flow into drainage ditch 15, then through connecting pipe 17 into rainwater inspection well 6, and finally out through rainwater pipe 9. The installation of drainage ditch 15 and connecting pipe 17 increases the drainage volume of accumulated water, allowing more water to be discharged at the same time, thus avoiding water accumulation and waterlogging problems on the ground of alleyway 3. On the other hand, drainage ditch 15 itself has a certain water storage capacity, which can reduce the drainage load of rainwater pipe 9 to a certain extent.

[0023] The rainwater pipe 9 is located above the sewage pipe 4. Placing the rainwater pipe 9 above the sewage pipe 4 is more suitable for the excavation and construction needs of the narrow alleyway 3 in a limited space, reducing manpower and material resources during the construction process and reducing the difficulty of construction.

Claims

1. A rainwater and sewage separation system for urban village renovation, comprising a house (1) and a combined riser (2) installed on the house (1), characterized in that: Sewage pipes (4) are installed underground in the alleyways (3) between the houses (1). Several sewage inspection wells (5) are installed at intervals along the length of the sewage pipes (4). The lower end of the combined riser (2) is connected to the sewage pipes (4). A ring-shaped rainwater inspection well (6) is installed concentrically on the outside of the sewage inspection wells (5). A cover plate (7) is installed on the upper end of the sewage inspection wells (5). A ring-shaped rainwater grate (8) is installed on the upper end of the rainwater inspection wells (6). A rainwater pipe (9) is installed parallel to one side of the sewage pipes (4). The rainwater pipes (9) are connected to each rainwater inspection well (6) in sequence. A rainwater riser (10) is installed on one side of the houses (1). The lower end of the rainwater riser (10) is connected to the rainwater pipe (9).

2. The rainwater and sewage separation system for urban village renovation according to claim 1, characterized in that: An overflow outlet (11) is provided on the upper part of the side wall of the sewage inspection well (5).

3. A rainwater and sewage separation system for urban village renovation according to claim 2, characterized in that: A sealing plate (12) is provided inside the overflow port (11). The upper end of the sealing plate (12) is rotatably connected to the top of the overflow port (11), and a counterweight (13) is provided at the lower part of the sealing plate (12).

4. A rainwater and sewage separation system for urban village renovation according to claim 1, characterized in that: The outer wall of the sewage inspection well (5) is coated with anti-seepage paint (14).

5. A rainwater and sewage separation system for urban village renovation according to claim 1, characterized in that: Drainage ditches (15) are provided on both sides of the tunnel (3), and filter screens (16) are provided on the drainage ditches (15). The drainage ditches (15) and the rainwater inspection wells (6) are connected by a connecting pipe (17).

6. A rainwater and sewage separation system for urban village renovation according to claim 1, characterized in that: The rainwater pipe (9) is located above the sewage pipe (4).

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