Building rainwater and sewage diversion drainage system based on pipe-in-pipe type rainwater vertical pipe

Abstract

The utility model discloses a building rainwater and sewage diversion drainage system based on a pipe-in-pipe type rainwater stand pipe, which comprises sewage drainage pipes and rainwater stand pipes, the rainwater stand pipes are arranged along the height direction of a building, a plurality of sewage drainage pipes are arranged on one side of the rainwater stand pipes of each height layer, the building rainwater and sewage diversion drainage system further comprises an inner pipe and a rainwater and sewage diverter, the inner pipe is arranged in the rainwater vertical pipe, a first flow channel used for discharging rainwater is formed in an inner cavity of the inner pipe, a second flow channel used for discharging sewage is formed in a cavity between the inner pipe and the rainwater vertical pipe, and the multiple sewage drainage pipes are communicated with the second flow channel; the rain and sewage diverter is arranged at the outlet end of the first flow channel or the second flow channel and used for controlling the flow direction of rainwater or sewage. Compared with an existing rainwater and sewage diversion scheme, the rainwater and sewage diversion device is simple in construction and can solve the problem of rainwater and sewage mixed flow in rainy days.

Description

Technical Field

[0001] The utility model relates to the technical field of building drainage, in particular to a building rainwater and sewage diversion drainage system based on a pipe-in-pipe type rainwater riser. Background Art

[0002] Rainwater collected from building rooftops typically flows through rainwater risers into stormwater wells and is subsequently discharged into the stormwater network. However, some rainwater risers have confluence or misconnections, allowing wastewater from balcony washing machines, kitchen and bathroom wastewater, and other wastewater to enter the stormwater network through these risers and subsequently be discharged into natural water bodies, causing serious pollution.

[0003] To solve the above technical problems, there are currently two commonly used methods: 1. New rainwater risers are built to discharge rainwater from the roof, and the old rainwater risers are converted into sewage risers after blocking the rainwater inlet to achieve rainwater and sewage separation; 2. A riser separator is installed at the end of the rainwater riser to intercept sewage and divert it to the sewage network on sunny days, and intercept rainwater and divert it to the rainwater network on rainy days. However, the first solution is not suitable for high-rise buildings because it involves high-altitude construction work, which is risky, difficult, and costly. The second solution requires the use of valves or intercepting devices to intercept sewage, which requires external power, and the drainage system is complex and cannot solve the problem of mixed rainwater and sewage on rainy days. Therefore, it is very necessary to design a new structure of rainwater riser to solve the above technical problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned deficiencies of the existing technology and propose a building rainwater and sewage diversion drainage system based on a pipe-in-pipe rainwater riser, so as to solve the technical problems that the existing method of building new rainwater risers has high construction risks and difficulties, and the method of setting riser separators has a complex drainage system and cannot solve the problem of mixed flow of rainwater and sewage on rainy days.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A building rainwater and sewage separation drainage system based on a pipe-in-pipe rainwater riser, comprising a sewage drainage pipe and a rainwater riser, wherein the rainwater riser is arranged along the height direction of the building, and multiple sewage drainage pipes are arranged on one side of the rainwater riser at each height level, and further comprising:

[0007] an inner pipe, the inner pipe being disposed inside the rainwater riser, the inner cavity of the inner pipe forming a first flow channel for discharging rainwater, the cavity between the inner pipe and the rainwater riser forming a second flow channel for discharging sewage, and the plurality of sewage drain pipes being respectively connected to the second flow channel;

[0008] A rainwater and sewage diverter is arranged at the outlet end of the first flow channel or the second flow channel, and is used to control the flow direction of rainwater or sewage.

[0009] In some embodiments, the end of the inner tube has a first outlet, which forms the outlet end of the first flow channel and is directly connected to the municipal rainwater pipe; the end of the rainwater riser has a second outlet, which forms the outlet end of the second flow channel, and the second outlet is connected to a bypass through the rainwater and sewage diverter, and the other end of the bypass is connected to the municipal sewage network.

[0010] In some embodiments, the end of the inner tube has a first outlet, which forms the outlet end of the first flow channel. The first outlet is connected to a bypass through the rainwater and sewage diverter, and the other end of the bypass is connected to the municipal rainwater pipe; the end of the rainwater riser has a second outlet, which forms the outlet end of the second flow channel, and the second outlet is directly connected to the municipal sewage network.

[0011] In some embodiments, the rainwater and sewage diverter is also provided with an inspection port.

[0012] In some embodiments, the drainage system further includes a rainwater collector disposed on the roof, wherein the rainwater collector is connected to the first flow channel and separated from the second flow channel.

[0013] In some embodiments, a slag net is provided at the rainwater outlet of the rainwater collector.

[0014] In some embodiments, a vent pipe for connecting the second flow channel and the external atmosphere is connected to the top of the rainwater riser.

[0015] In some embodiments, the inner tube comprises a flexible tubing.

[0016] In some embodiments, the flexible pipe is composed of a plurality of pipe units connected in sequence.

[0017] In some embodiments, the flexible pipe further includes a plurality of connectors for connecting two adjacent pipe units.

[0018] Compared with the prior art, the beneficial effects of the present invention mainly include:

[0019] The building rainwater and sewage diversion drainage system provided by the present invention realizes diversion based on the structural form of a pipe-in-pipe rainwater riser. Specifically, an inner pipe is set in the existing rainwater riser, and the internal cavity of the inner pipe forms a first flow channel for discharging rainwater, and the cavity between the inner pipe and the rainwater riser forms a second flow channel for discharging sewage. In this way, rainwater and sewage can be discharged separately from the first flow channel and the second flow channel, respectively, thereby realizing rainwater and sewage diversion. The treatment solution of the present invention for mixed flow in rainwater risers has low construction difficulty and low modification cost. It can work without external power, and rainwater and sewage each have a dedicated discharge channel and will not be affected by rainy days, which completely solves the problem of mixed flow of rainwater and sewage on rainy days. In addition, the inner pipe is set inside the existing rainwater riser, does not take up additional space, and does not affect the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural diagram of Example 1;

[0021] Figure 2 It is a structural diagram of Example 2.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Rainwater riser;

[0024] 2. Sewage drainage pipe;

[0025] 3. Inner tube;

[0026] 4. Rainwater and sewage diverter;

[0027] 5. Buildings;

[0028] 6. Slag blocking net;

[0029] 7. Ventilation pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] In response to the currently widespread phenomenon of mixed flow in rainwater risers, the present invention innovatively proposes a new solution, that is, the present invention provides a building rainwater and sewage diversion drainage system based on pipe-in-pipe rainwater risers, which realizes rainwater and sewage diversion by installing an inner pipe inside the existing rainwater riser.

[0032] like Figure 1As shown, embodiment 1 of the present invention relates to a building rainwater and sewage diversion drainage system based on a pipe-in-pipe rainwater riser, including a rainwater riser 1 and a sewage drain pipe 2. The rainwater riser 1 is arranged along the height direction of the building 5. There are multiple sewage drain pipes 2, and multiple sewage drain pipes 2 are arranged on one side of the rainwater riser 1 at each height layer. On this basis, it also includes an inner pipe 3 and a rainwater and sewage diverter 4. The inner pipe 3 is arranged inside the rainwater riser 1. In this way, the internal cavity of the inner pipe 3 forms a first flow channel for discharging rainwater, and the cavity between the inner pipe 3 and the rainwater riser 1 forms a second flow channel for discharging sewage. Multiple sewage drain pipes 2 are respectively connected to the second flow channel, and the rainwater and sewage diverter 4 is arranged at the outlet end of the first flow channel or the second flow channel to control the flow direction of rainwater or sewage.

[0033] In this embodiment, an inner tube 3 is installed within the existing rainwater riser 1, creating a primary flow channel for rainwater and a secondary flow channel for sewage, thereby separating sewage and rainwater. Compared to existing mixed-flow solutions, this embodiment offers a simpler structure, requires no external power, and offers minimal construction effort and low retrofit costs. It completely resolves the problem of mixed rainwater and sewage flows, regardless of weather.

[0034] This embodiment is based on actual working conditions. A first outlet is opened at the end of the inner tube 3. The first outlet forms the outlet end of the first flow channel. The first outlet can be directly connected to the municipal rainwater pipe, that is, the rainwater in the first flow channel can vertically enter the municipal rainwater pipe network; at the same time, a second outlet is opened at the end of the rainwater riser 1. The second outlet forms the outlet end of the second flow channel. The second outlet is connected to a bypass through a rainwater and sewage diverter 4. The other end of the bypass is connected to the municipal sewage pipe network, that is, the sewage in the second flow channel enters the municipal sewage pipe network from the bypass.

[0035] Furthermore, the rainwater-sewage diverter 4 is also provided with an inspection port, and when maintenance or garbage cleaning is required, the inspection port can be opened to perform maintenance operations.

[0036] Furthermore, the drainage system also includes a rainwater collector arranged on the roof, which is connected to the first flow channel and isolated from the second flow channel. That is, the rainwater collected by the rainwater collector is discharged through the first flow channel and will not flow into the second flow channel. This is the key to achieving rainwater and sewage separation in this embodiment.

[0037] Furthermore, a debris screen 6 is provided at the rainwater outlet of the rainwater collector to prevent debris, garbage, etc. from entering the inner tube 3 and causing blockage.

[0038] Furthermore, a vent pipe 7 for connecting the second flow channel with the external atmosphere is connected to the top of the rainwater riser 1. The setting of the vent pipe 7 enables the second flow channel to be connected with the atmosphere to ensure that the second flow channel does not form a vacuum environment when draining water, thereby hindering drainage.

[0039] Furthermore, the inner tube 3 is a flexible pipe made of a flexible material, including but not limited to any one or a combination of rubber, plastic, leather, and fiber. This flexible pipe is a waterproof hose with a very soft and strong wall. When a large amount of rainwater flows through the inner cavity of the inner tube 3 (i.e., the first flow channel), the wall of the inner tube 3 can expand outward to ensure the flow rate. When a large amount of sewage flows through the cavity between the inner tube 3 and the rainwater riser 1 (i.e., the second flow channel), the wall of the inner tube 3 is compressed inward, which does not affect the flow rate of the second flow channel.

[0040] Furthermore, the flexible pipe is composed of a plurality of pipe units connected in sequence, and every two adjacent pipe units can be connected through a connector.

[0041] like Figure 2 As shown, Example 2 of the present invention relates to a building rainwater and sewage diversion drainage system based on a pipe-in-pipe rainwater riser. The structure of Example 2 is basically the same as that of Example 1. The only difference is that this embodiment opens a first outlet at the end of the inner pipe 3 according to actual working conditions. The first outlet forms the outlet end of the first flow channel. The first outlet is connected to a bypass through the rainwater and sewage diverter 4, and the other end of the bypass is connected to the municipal rainwater pipe, that is, the rainwater in the first flow channel enters the municipal rainwater network from the bypass; at the same time, a second outlet is opened at the end of the rainwater riser 1, and the second outlet forms the outlet end of the second flow channel. The second outlet is directly connected to the municipal sewage network, that is, the sewage in the second flow channel vertically enters the municipal sewage network.

[0042] In summary, the rainwater and sewage diversion drainage system provided by the present invention is to dispose an inner tube 3 inside the existing rainwater riser 1. The internal cavity of the inner tube 3 forms a first flow channel for discharging rainwater, and the cavity between the inner tube 3 and the rainwater riser 1 forms a second flow channel for discharging sewage. In this way, rainwater and sewage can be discharged separately from the first flow channel and the second flow channel, respectively, thereby achieving rainwater and sewage diversion. At the same time, according to the actual working conditions on site, the present invention can discharge rainwater vertically and directly into the municipal rainwater pipe network, and sewage can be discharged into the municipal sewage pipe network from a bypass through the rainwater and sewage diverter 4. It can also be reversed, with sewage being discharged directly vertically into the municipal sewage pipe network, and rainwater being discharged into the municipal rainwater pipe network from a bypass through the rainwater and sewage diverter 4.

[0043] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A building rainwater and sewage separation drainage system based on a pipe-in-pipe rainwater riser, comprising a sewage drain pipe and a rainwater riser, wherein the rainwater riser is arranged along the height direction of the building, and multiple sewage drain pipes are arranged on one side of the rainwater riser at each height level, characterized in that: Also includes: an inner pipe, the inner pipe being disposed inside the rainwater riser, the inner cavity of the inner pipe forming a first flow channel for discharging rainwater, the cavity between the inner pipe and the rainwater riser forming a second flow channel for discharging sewage, and the plurality of sewage drain pipes being respectively connected to the second flow channel; A rainwater and sewage diverter is arranged at the outlet end of the first flow channel or the second flow channel, and is used to control the flow direction of rainwater or sewage.

2. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 1 is characterized in that: The end of the inner tube has a first outlet, which forms the outlet end of the first flow channel and is directly connected to the municipal rainwater pipe; the end of the rainwater riser has a second outlet, which forms the outlet end of the second flow channel and is connected to a bypass through the rainwater and sewage diverter, and the other end of the bypass is connected to the municipal sewage network.

3. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 1 is characterized in that: The end of the inner pipe has a first outlet, which forms the outlet end of the first flow channel. The first outlet is connected to a bypass through the rainwater and sewage diverter, and the other end of the bypass is connected to the municipal rainwater pipe; the end of the rainwater riser has a second outlet, which forms the outlet end of the second flow channel, and the second outlet is directly connected to the municipal sewage network.

4. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 2 or 3 is characterized in that: The rainwater and sewage diverter is also provided with an inspection port.

5. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 4 is characterized in that: The drainage system further includes a rainwater collector disposed on the roof, wherein the rainwater collector is communicated with the first flow channel and isolated from the second flow channel.

6. The building rainwater and sewage separation drainage system based on pipe-in-pipe rainwater riser according to claim 5 is characterized in that: A slag net is provided at the rainwater outlet of the rainwater collector.

7. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 6 is characterized in that: The top end of the rainwater riser is connected with a vent pipe for connecting the second flow channel with the external atmosphere.

8. The building rainwater and sewage separation drainage system based on pipe-in-pipe rainwater riser according to claim 7 is characterized in that: The inner tube comprises a flexible pipe.

9. The building rainwater and sewage separation drainage system based on the pipe-in-pipe rainwater riser according to claim 8 is characterized in that: The flexible pipeline is composed of a plurality of pipeline units connected in sequence.

10. The building rainwater and sewage separation drainage system based on pipe-in-pipe rainwater riser according to claim 9 is characterized in that: The flexible pipe further includes a plurality of connectors for connecting two adjacent pipe units.

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