Combined rainwater regulation and storage facility

Abstract

The utility model relates to the technical field of rainwater resource utilization, and discloses a combined rainwater regulation and storage facility which comprises a split-flow sedimentation filtering device, a first collecting pipe, a rainwater recycling pool, a flow dividing well, a second collecting pipe and a rainwater regulating pool. The discarding, precipitating and filtering device is provided with a first collecting pipe, and the first collecting pipe is communicated with the water inlet end of the rainwater recycling pool; the rainwater recycling pool is connected with a water supply pipeline for greening and road washing; the flow dividing well is provided with a second collecting pipe, and the second collecting pipe is communicated with the water inlet end of the rainwater adjusting pool. And the rainwater regulating reservoir is connected with a drainage pipe group for draining rainwater to a municipal rainwater pipe network. The rainwater recycling pool and the rainwater adjusting pool are rainwater regulation and storage facilities with different functions. At present, according to a conventional method, only a rainwater regulation and storage facility with a single function is generally selected in the same drainage system. According to the utility model, two rainwater regulation and storage facilities with different functions are combined in the process, so that the limitation of a rainwater regulation and storage facility with a single function on the control target of a sponge city is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater resource utilization, in particular to a combined rainwater regulating and storing facility. Background Art

[0002] A sponge city refers to a city that uses reasonable engineering and technical means to make it like a sponge, with good "elasticity" in adapting to environmental changes and responding to natural disasters. It absorbs, stores, infiltrates and purifies water when it rains, and "releases" and utilizes the stored water when needed, so that the hydrological characteristics of the city after development and construction are close to those before development, thereby playing a role in protecting and improving the ecological environment.

[0003] Sponge city construction measures include a variety of technologies such as "infiltration, retention, storage, purification, use, and discharge". According to different collection purposes, the diversion drainage system usually includes three types of rainwater storage facilities: the first type of rainwater storage facility is used to control the runoff pollution of the diversion drainage system. It uses the "drainage" technology to collect the initial rainfall and discharge it into the sewage network after the rain. It is effective in controlling the volume of the annual runoff and reducing pollutants; the second type of rainwater storage facility is used to reduce the peak flow of the annual runoff. It uses the "retention and discharge" technology to collect the peak flow, which can be discharged into the rainwater network after the rain. Since the collected rainwater is directly discharged without treatment, The rainwater is collected and stored in the municipal rainwater pipe network, but since the collected rainwater is only stored temporarily, it needs to be emptied to the municipal rainwater pipe network 24 hours after the rain, so it does not work for the control of the annual runoff volume and the reduction of pollutants; the third type of rainwater storage facility is to recycle rainwater and reuse it, using the "storage, purification, and use" technology. The collected rainwater is treated by the treatment facilities and used for green irrigation and road washing, which is effective for the control of the annual runoff volume and the reduction of pollutants. The rainwater storage facility is regulated by the storage tank. Since the storage tank has a limited volume, it is affected by the user's water consumption and often may not meet the function of reducing peak flow. At present, in the construction of buildings and communities, the conventional practice of setting up rainwater storage facilities is: according to different collection purposes, in the same catchment area and the same set of rainwater pipe network system, usually only one function of rainwater storage facilities is selected; the selection of a single-function rainwater storage facility has limitations in achieving the control goals of sponge cities. Utility Model Content

[0004] The purpose of the utility model is to provide a combined rainwater storage facility, which can reduce the peak flow rate, recycle rainwater and reduce pollutants in the same catchment area and the same rainwater pipe network system.

[0005] The utility model provides a combined rainwater regulation and storage facility comprising: a discarded flow sedimentation and filtering device, a first collecting pipe, a rainwater reuse pool, a diversion well, a second collecting pipe, and a rainwater regulating pool; the discarded flow sedimentation and filtering device is provided with a first collecting pipe, and the discarded flow sedimentation and filtering device is connected with the water inlet end of the rainwater reuse pool through the first collecting pipe; the rainwater reuse pool is connected with a water supply pipeline for greening and road washing; the diversion well is provided with a second collecting pipe, and the second collecting pipe is connected with the rainwater regulating pool; the rainwater regulating pool is connected with a drainage pipe group, and the drainage pipe group is used to be connected to a municipal rainwater pipe network.

[0006] Preferably, the combined rainwater regulation and storage facility also includes a rainwater inlet pipe, the discarded flow sedimentation and filtration device has an inlet and three outlets, the inlet is connected to the rainwater inlet pipe, and the rainwater inlet pipe is used to connect to the rainwater pipe network at the end of the outdoor rainwater drainage system of the residential area; the three outlets are respectively connected to a discarded flow pipe, a first collecting pipe and a first overflow pipe, an electric valve is provided on the discarded flow pipe, the electric valve is used to control the flow of the discarded flow pipe, the discarded flow pipe is connected to the residential sewage network, the first collecting pipe is used to connect to the water inlet end of the rainwater reuse pool, and the first overflow pipe is connected to the water inlet of the diversion well.

[0007] Preferably, the diversion well has a water inlet and two drainage outlets, the water inlet is connected to the first overflow pipe, the two drainage outlets are respectively connected to the second collecting pipe and the first drainage pipe, the second collecting pipe is connected to the water inlet end of the rainwater regulating tank, and the first drainage pipe is connected to the municipal rainwater pipe network.

[0008] Preferably, the pipe bottom elevation at the connection between the rainwater inlet pipe and the discarded flow sedimentation and filtering device is the reference elevation H1, the pipe bottom elevation at the connection between the first collecting pipe and the discarded flow sedimentation and filtering device is H1-0.2m, the pipe bottom elevation at the connection between the first overflow pipe and the discarded flow sedimentation and filtering device is H1m, and the pipe bottom elevation at the connection between the discarded flow pipe and the discarded flow sedimentation and filtering device is H1-0.4m.

[0009] Preferably, the pipe bottom elevation at the connection between the first overflow pipe and the diversion well is the reference elevation H2, the pipe bottom elevation at the connection between the second collecting pipe and the diversion well is H2-0.2m, and the pipe bottom elevation at the connection between the first drainage pipe and the diversion well is H2.

[0010] Preferably, the pipe bottom elevation H1 at the connection between the first overflow pipe and the discarded sedimentation and filtering device is greater than the pipe bottom elevation H2 at the connection between the first overflow pipe and the diversion well.

[0011] Preferably, the combined rainwater storage facility also includes a confluence well, the drainage pipe group includes a second overflow pipe, a pressure drain pipe and a second drain pipe, the second overflow pipe and the pressure drain pipe are both connected to the confluence well, and the confluence well has a second drain pipe for connecting to the municipal rainwater network.

[0012] Preferably, a pressure pump is connected to the pressure drain pipe.

[0013] Compared with the prior art, the combined rainwater storage facility of the embodiment of the utility model has the following beneficial effects: in the same catchment area and the same rainwater pipe network system, the rainwater is diverted and controlled by setting a discarded flow sedimentation and filtration device and a diversion well, so that the rainwater enters the rainwater recovery pool and the rainwater regulating pool respectively. It can not only achieve the reduction of pollutants and the recycling of rainwater, but also achieve the effect of reducing peak flow, solve the limitation of the single-function rainwater storage facility on the control target of the sponge city, and make it better achieve the control target of the sponge city. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0015] In the figure, 1, abandoned flow sedimentation and filtration device; 2, rainwater reuse pool; 3, rainwater regulating pool; 4, abandoned flow pipe; 5, first collecting pipe; 6, first overflow pipe; 7, rainwater inlet pipe; 8, second collecting pipe; 9, water supply pipeline;

[0016] 10. Drain pipe group; 101. Second overflow pipe; 102. Pressure drain pipe; 103. Second discharge pipe;

[0017] 11. Diversion well; 12. First drainage pipe; 14. Junction well. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0021] like Figure 1 As shown, a combined rainwater storage facility in a preferred embodiment of the utility model includes: a discarded flow sedimentation and filtration device 1, a first collecting pipe 5, a rainwater reuse pool 2, a diversion well 11, a second collecting pipe 8, and a rainwater regulating pool 3; the discarded flow sedimentation and filtration device 1 is provided with a first collecting pipe 5, and the discarded flow sedimentation and filtration device 1 is connected to the water inlet end of the rainwater reuse pool 2 through the first collecting pipe 5; the rainwater reuse pool 2 is connected to a water supply pipeline 9 for greening and road washing; the diversion well 11 is provided with a second collecting pipe 8, and the second collecting pipe 8 is connected to the rainwater regulating pool 3; the rainwater regulating pool 3 is connected to a drainage pipe group 10, and the drainage pipe group 10 is used to be connected to the municipal rainwater pipe network. 1. Each component is highly flexible and will not interfere with each other after being combined. They can operate independently and complement each other to play their respective roles; 2. The volume of the rainwater regulating tank 3 can be flexibly adjusted according to the different total amount of rainwater runoff control in different places; 3. It can not only meet the requirements of annual runoff total control volume, pollutant reduction, and rainwater peak control volume, but also better achieve the control goals of sponge cities without affecting the drainage safety of the entire rainwater system.

[0022] The working process of the utility model is as follows: rainwater is connected to the abandoned flow sedimentation and filtration device 1, and rainwater is connected to the rainwater reuse pool 2 through the first collecting pipe 5 from the abandoned flow sedimentation and filtration device 1. The rainwater in the rainwater reuse pool 2 is used for flushing greening and roads through the water supply pipeline 9, and is not discharged into the municipal rainwater pipe network, so it is effective in controlling the volume of the annual runoff and reducing runoff pollution. Another part of the rainwater passes through the diversion well 11, and the rainwater is connected to the rainwater regulating pool 3 from the diversion well 11 through the second collecting pipe 8. The rainwater stored in the rainwater regulating pool 3 is discharged into the municipal rainwater pipe network through the drainage pipe group 10 within 24 hours after the rainfall. The rainwater regulating pool 3 only temporarily stores rainwater and is emptied after the rain, so it is effective in reducing the peak flow of the municipal rainwater pipe network.

[0023] Furthermore, the combined rainwater regulation and storage facility also includes a rainwater inlet pipe 7. The discarded flow sedimentation and filtration device 1 has an inlet and three outlets. The inlet is connected to the rainwater inlet pipe 7, and the rainwater inlet pipe 7 is used to connect to the rainwater pipe network at the end of the outdoor rainwater drainage system of the community; the three outlets are respectively connected to the discarded flow pipe 4, the first collecting pipe 5 and the first overflow pipe 6. The discarded flow pipe 4 is provided with an electric valve, and the electric valve is used to control the flow of the discarded flow pipe 4. The discarded flow pipe 4 is connected to the community sewage network. The first collecting pipe 5 is used to connect to the water inlet end of the rainwater reuse pool 2, and the first overflow pipe 6 is connected to the water inlet of the diversion well 11. The rainwater is connected to the discarded flow sedimentation and filtration device 1 from the rainwater inlet pipe 7, wherein the rainwater of the initial 3-5 mm rainfall contains a large amount of impurities such as dust. The rainwater of the initial rainfall is discarded to the sewage network through the discarded flow sedimentation and filtration device 1 through the discarded flow pipe 4. After the discard is completed, the rainwater of non-initial rainfall has a low dust content and is connected to the rainwater reuse pool 2 through the first collecting pipe 5 by the discarded flow sedimentation and filtration device 1. The rainwater in the rainwater reuse pool 2 is used for flushing greening and roads through the water supply pipeline 9 and is not discharged into the municipal rainwater network. Therefore, it is effective in controlling the annual runoff volume and reducing runoff pollution.

[0024] Further preferably, a pressure pump is connected to the water supply pipeline 9. On the one hand, the water supply pressure is increased. Through the pressure-increasing device, the water supply pipeline 9 can increase the pressure of the rainwater reuse pool 2 to the required level to meet the water supply needs for long-distance transportation or special purposes; on the other hand, the water supply range of the rainwater reuse pool 2 is expanded: due to the increased water supply pressure, the water supply pipeline 9 can transport water to a farther distance, thereby expanding the water supply range, so that more green areas and roads can obtain stable and reliable water supply.

[0025] Furthermore, the diversion well 11 has a water inlet and two drainage outlets, the water inlet is connected to the first overflow pipe 6, the two drainage outlets are respectively connected to the second collection pipe 8 and the first drainage pipe 12, the second collection pipe 8 is connected to the water inlet end of the rainwater regulating tank 3, and the first drainage pipe 12 is connected to the municipal rainwater pipe network. If a special rainstorm occurs, more rainwater than usual will be discharged into the municipal rainwater pipe network through the first drainage pipe 12.

[0026] Furthermore, the pipe bottom elevation at the connection between the rainwater inlet pipe 7 and the discarded flow sedimentation filter device 1 is the reference elevation H1, the pipe bottom elevation at the connection between the first collecting pipe 5 and the discarded flow sedimentation filter device 1 is H1-0.2m, the pipe bottom elevation at the connection between the first overflow pipe 6 and the discarded flow sedimentation filter device 1 is H1, and the pipe bottom elevation at the connection between the discarded flow pipe 4 and the discarded flow sedimentation filter device 1 is H1-0.4m. By setting the elevation of each pipeline, the discarded flow sedimentation filter device 1 can control the flow direction of rainwater without setting a water pump, which is low in cost.

[0027] Furthermore, the pipe bottom elevation at the connection between the first overflow pipe 6 and the diversion well 11 is the reference elevation H2, the pipe bottom elevation at the connection between the second collection pipe 8 and the diversion well 11 is H2-0.2m, and the pipe bottom elevation at the connection between the first drainage pipe 12 and the diversion well 11 is H2. By setting the elevation of each pipe, the flow direction of rainwater can be controlled without setting a water pump, which is low in cost. The pipe bottom elevation of the first overflow pipe 6 is higher than the pipe bottom elevation of the second collection pipe 8 to realize the diversion of rainwater by the diversion well 11, and further realize the regulation and utilization of rainwater.

[0028] Furthermore, the pipe bottom elevation H1 at the connection between the first overflow pipe 6 and the abandoned flow sedimentation and filtering device 1 is greater than the pipe bottom elevation H2 at the connection between the first overflow pipe 6 and the diversion well 11. By setting the elevation of each pipe, the flow direction of rainwater can be controlled without setting a water pump, which is low in cost. It is further ensured that the rainwater of the abandoned flow sedimentation and filtering device 1 flows to the diversion well 11 through the first overflow pipe 6.

[0029] Furthermore, the combined rainwater storage facility also includes a confluence well 14, and the drainage pipe group 10 includes a second overflow pipe 101, a pressure drainage pipe 102 and a second drainage pipe. The second overflow pipe 101 and the pressure drainage pipe 102 are both connected to the confluence well 14, and the confluence well 14 has a second drainage pipe for connecting to the municipal rainwater pipe network. The first aspect is centralized management: the second overflow pipe 101 and the drainage pipe are merged together through the confluence well 14, which can be conveniently centralized. Management, reduce the individual monitoring and maintenance of each pipeline, and reduce management costs and workload. The second aspect is to improve the flow processing capacity: the confluence well 14 can bring together the fluid in the second overflow pipe 101 and the drainage pipe, thereby increasing the flow processing capacity. The third aspect is to balance the flow and pressure: in some cases, there may be a difference in flow or pressure between the second overflow pipe 101 and the drainage pipe. Through the confluence of the confluence well 14, the flow and pressure of the second overflow pipe 101 and the drainage pipe can be balanced to ensure the stable operation of the system. The fourth aspect is that it is easy to monitor and control: the confluence well 14 is usually equipped with corresponding monitoring equipment and control devices, which can monitor the flow rate, pressure and other parameters of the fluid in real time, and adjust according to needs, so as to facilitate timely discovery and handling of problems and ensure the safety and reliability of the combined rainwater storage facility.

[0030] Furthermore, a pressure pump is connected to the pressure drain pipe 102. The pressure drain pipe 102 improves the drainage efficiency of the rainwater storage module. Since the rainwater storage part is designed as a gravity flow system, drainage is carried out by relying on the slope of the second overflow pipe 101 and the deadweight of the water flow. However, the slope of the pipeline is small, and gravity flow drainage may not meet the demand for rapid drainage. A pressure pump is set to provide power for the pressure drain pipe 102, forcing water to be transported to the municipal rainwater pipe network, thereby improving drainage efficiency. In addition, the pressure pump is flexible and can adjust the operating status as needed to achieve flexible drainage scheduling.

[0031] In summary, the embodiment of the utility model provides a combined rainwater storage facility, which classifies rainwater through the discarded sedimentation filter device 1, discards the initial rainfall containing more impurities through the discarded flow pipe 4 to the sewage pipe network to achieve pollution reduction, and a part of the rainwater enters the rainwater reuse pool 2 through the first collecting pipe 5 and the filter device, and is not discharged to the municipal rainwater pipe network, which plays a role in reducing the annual runoff volume and reducing runoff pollution, and another part of the rainwater enters the diversion well 11 through the first overflow pipe 6, and a part of the rainwater enters the rainwater regulating pool through the second collecting pipe 8. This process is only a temporary storage of rainwater, which is emptied within 24 hours after rainfall, which plays a role in reducing peak flow. In the same catchment area, a combined rainwater storage facility with multiple functions in the same set of rainwater pipe network system.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A combined rainwater storage facility, characterized in that: include: Abandoned flow sedimentation and filtration device, first collection pipe, rainwater reuse pool, diversion well, second collection pipe, rainwater regulating pool; The abandoned flow sedimentation and filtration device is provided with a first collecting pipe, and the abandoned flow sedimentation and filtration device is connected to the water inlet end of the rainwater reuse pool through the first collecting pipe; The rainwater recycling pool is connected to a water supply pipeline for greening and road washing; The diversion well is provided with a second collecting pipe, and the second collecting pipe is connected to the rainwater regulating tank; The rainwater regulating pool is connected with a drainage pipe group, and the drainage pipe group is used to connect to the municipal rainwater pipe network.

2. The combined rainwater storage facility according to claim 1 is characterized in that: It also includes a rainwater inlet pipe. The discarded flow sedimentation and filtration device has an inlet and three outlets. The inlet is connected to a rainwater inlet pipe, and the rainwater inlet pipe is used to connect to the rainwater pipe network at the end of the outdoor rainwater drainage system of the residential area; the three outlets are respectively connected to a discarded flow pipe, a first collecting pipe and a first overflow pipe. The discarded flow pipe is provided with an electric valve, and the electric valve is used to control the flow of the discarded flow pipe. The discarded flow pipe is connected to the residential sewage network. The first collecting pipe is used to connect to the water inlet end of the rainwater reuse pool, and the first overflow pipe is connected to the water inlet of the diversion well.

3. The combined rainwater storage facility according to claim 2 is characterized in that: The diversion well has a water inlet and two drainage outlets, the water inlet is connected to the first overflow pipe, the two drainage outlets are respectively connected to the second collecting pipe and the first drainage pipe, the second collecting pipe is connected to the water inlet end of the rainwater regulating tank, and the first drainage pipe is connected to the municipal rainwater pipe network.

4. The combined rainwater storage facility according to claim 2, characterized in that: The pipe bottom elevation at the connection between the rainwater inlet pipe and the discarded flow sedimentation and filtering device is the reference elevation H1, the pipe bottom elevation at the connection between the first collecting pipe and the discarded flow sedimentation and filtering device is H1-0.2m, the pipe bottom elevation at the connection between the first overflow pipe and the discarded flow sedimentation and filtering device is H1, and the pipe bottom elevation at the connection between the discarded flow pipe and the discarded flow sedimentation and filtering device is H1-0.4m.

5. The combined rainwater storage facility according to claim 3 is characterized in that: The bottom elevation of the first overflow pipe connected to the diversion well is the reference elevation H2, the bottom elevation of the second collecting pipe connected to the diversion well is H2-0.2m, and the bottom elevation of the first drainage pipe connected to the diversion well is H2.

6. The combined rainwater storage facility according to claim 5, characterized in that: The pipe bottom elevation H1 at the connection between the first overflow pipe and the discarded flow sedimentation and filtering device is greater than the pipe bottom elevation H2 at the connection between the first overflow pipe and the diversion well.

7. The combined rainwater storage facility according to claim 1, characterized in that: It also includes a confluence well, the drainage pipe group includes a second overflow pipe, a pressure drain pipe and a second drain pipe, the second overflow pipe and the pressure drain pipe are both connected to the confluence well, and the confluence well has the second drain pipe for connecting to the municipal rainwater pipe network.

8. The combined rainwater storage facility according to claim 7, characterized in that: The pressure drain pipe is connected with a pressure pump.

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