Rainwater collection and utilization system
By designing a rainwater harvesting and utilization system, including a diversion module, a collection module, and a transportation module, and using rainwater lift pumps and ultraviolet sterilizers to treat rainwater, the problem of low rainwater resource utilization efficiency under tap water pressure is solved, achieving high-efficiency utilization and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-03-13
AI Technical Summary
Existing technologies are insufficient to effectively utilize rainwater resources under tap water pressure and have failed to effectively reduce water costs.
A rainwater harvesting and utilization system was designed, including a diversion module, a collection module, a conveying module, and a finished product equipment room. The system collects high-quality rainwater by identifying water quality through diversion wells, uses a rainwater lift pump to convey it to a sand filter to remove impurities, and then treats it with an ultraviolet sterilizer before conveying it to the reuse pipeline network. The rainwater utilization process is optimized by combining a circuit integrated control system.
It achieves efficient rainwater resource utilization under tap water pressure, reduces water costs, maximizes the use of rainwater resources, and saves tap water resources.
Smart Images
Figure CN223991425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rainwater harvesting and utilization technology, specifically a rainwater harvesting and utilization system. Background Technology
[0002] Water resources have enormous potential for development and utilization. Actively promoting the comprehensive utilization of water resources and proposing a rainwater harvesting and utilization system can alleviate the contradiction between water supply and demand, reduce pollution, and benefit water ecological security. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rainwater harvesting and utilization system that can make good use of rainwater resources while maintaining the pressure of tap water, and to reduce water costs while effectively treating rainwater.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A rainwater harvesting and utilization system includes a diversion module, a collection module, a conveying module, and a finished product equipment room. The diversion module includes a finished product diversion well and is used to identify and collect high-quality rainwater. The collection module includes a PP module combined collection tank, which is connected to the finished product diversion well via a pipeline for temporarily storing raw rainwater. The conveying module includes a rainwater lift pump installed in the PP module combined collection tank, a sand filter installed in the finished product equipment room, and a PP module clear water tank. The outlet of the rainwater lift pump is connected to the inlet of the sand filter. The outlet is connected via pipe two, and the sand filter outlet is connected to the PP module clear water tank via pipe three. The rainwater raw water in the PP module combination collection tank is transported to the sand filter by the operation of the rainwater lift pump, and then transported to the PP module clear water tank. The PP module clear water tank is equipped with a rainwater reuse pump. The finished product equipment room is equipped with a flow-through ultraviolet sterilizer. The outlet of the rainwater reuse pump is connected to the flow-through ultraviolet sterilizer via pipe three. The rainwater in the PP module clear water tank is transported to the flow-through ultraviolet sterilizer by the operation of the rainwater reuse pump. The outlet is connected to the reuse pipeline network.
[0006] Preferably, the inlet of the finished product wastewater well is connected to a water collection pipe, the beginning of which is equipped with a stainless steel grid, and a water quality sensor and a rainfall sensor are installed inside the water collection pipe.
[0007] Preferably, the outlet of the rainwater lifting pump is connected to a three-way valve, one branch of which is connected to a sand filter via a second pipe, and a solenoid valve is installed on the second pipe. The other branch is connected to the PP module assembly collection tank via a flushing pipe, and a solenoid valve is installed on the flushing pipe.
[0008] Preferably, a liquid level sensor is installed at the highest liquid level inside the PP module assembly collection tank.
[0009] Preferably, a rainwater drainage pump is installed in the PP module combination collection tank, and an equipment room drainage pump is installed in the finished equipment room. The outlets of the rainwater drainage pump and the equipment room drainage pump are connected to the downstream rainwater pipe network.
[0010] Preferably, a second liquid level sensor is installed inside the PP module clear water tank at the lowest liquid level, and the PP module clear water tank is also connected to a tap water supply pipe.
[0011] Preferably, the rainwater lift pump, rainwater sewage pump, equipment room sewage pump, and rainwater reuse pump are all installed in independent well casings.
[0012] Preferably, the system also includes a circuit integrated control system, wherein the rainwater lift pump, rainwater sewage pump, flow-through ultraviolet sterilizer, equipment room sewage pump, rainwater reuse pump, level sensor one, and level sensor two are electrically connected to the circuit integrated control system.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model, through the installation of a precast wastewater diversion well, a PP module combined collection tank, and a PP module clear water tank, collects high-quality rainwater by identifying water quality in the wastewater diversion well. The collected rainwater is then transported through pipeline one to the PP module combined collection tank for temporary storage. A rainwater lift pump then pumps the raw rainwater from the PP module combined collection tank to a sand filter to remove impurities such as suspended solids (SS). The rainwater is then transported to the PP module clear water tank. When utilizing the rainwater, a rainwater reuse pump pumps the rainwater from the PP module clear water tank to a flow-through ultraviolet sterilizer for disinfection before it is returned to the reuse network to meet reuse requirements. When the rainwater reserve in the PP module clear water tank is depleted, water is supplied through the municipal water supply pipe, maximizing the utilization of rainwater resources and conserving municipal water resources. This system effectively utilizes rainwater resources while maintaining municipal water pressure, effectively treating rainwater while reducing water costs. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a rainwater harvesting and utilization system.
[0016] In the diagram: 1. Finished product wastewater well; 2. PP module combined collection tank; 3. Rainwater lifting well; 4. Rainwater lifting pump; 5. Rainwater sewage pump; 6. Sand filter; 7. Flow-through ultraviolet sterilizer; 8. Equipment room sewage pump; 9. Finished product equipment room; 10. PP module clear water tank; 11. Rainwater reuse pump; 12. Circuit integrated control system. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0018] Example:
[0019] Please see Figure 1 This embodiment provides a rainwater harvesting and utilization system, including a diversion module, a collection module, a conveying module, and a finished product equipment room 9. It also includes a circuit integrated control system 12. The diversion module includes a finished product diversion well 1, used to identify and collect high-quality rainwater. The collection module includes a PP module combined collection tank 2, connected to the finished product diversion well 1 via a pipeline, used to temporarily store raw rainwater. The conveying module includes a rainwater lift pump 4 installed in the PP module combined collection tank 2, a sand filter 6 installed in the finished product equipment room 9, and a PP module clear water tank 10. The outlet of the rainwater lift pump 4 is connected to the inlet of the sand filter 6 via a pipeline, and the outlet of the sand filter 6 is connected to the PP module clear water tank 10 via a pipeline. The rainwater lift pump 4 transports the raw rainwater from the PP module combined collection tank 2 to the sand filter 6, and then to the PP module clear water tank 10. A rainwater reuse pump 11 is installed in pool 10, and a flow-through ultraviolet sterilizer 7 is installed in finished product equipment room 9. The outlet of the rainwater reuse pump 11 is connected to the flow-through ultraviolet sterilizer 7 through pipe three. The rainwater reuse pump 11 works to transport rainwater from the PP module clear water pool 10 to the flow-through ultraviolet sterilizer 7. The outlet is connected to the reuse pipeline network. When in use, high-quality rainwater is collected by identifying water quality through the finished product wastewater well 1. The collected rainwater is then transported to the PP module combined collection pool 2 through pipe one for temporary storage. The rainwater lift pump 4 works to transport the raw rainwater from the PP module combined collection pool 2 to the sand filter 6 to intercept impurities such as SS in the rainwater. Then it is transported to the PP module clear water pool 10. When using rainwater, the rainwater reuse pump 11 works to transport the rainwater from the PP module clear water pool 10 to the flow-through ultraviolet sterilizer 7. The ultraviolet sterilizer 7 disinfects the rainwater and then transports it to the reuse pipeline network to meet the reuse requirements.
[0020] In this embodiment, the inlet of the finished product wastewater well 1 is connected to a water collection pipe. A stainless steel mesh is installed at the beginning of the water collection pipe. A water quality sensor and a rainfall sensor are installed inside the water collection pipe. The stainless steel mesh is used to block large pieces of solid waste. The water quality sensor and the rainfall sensor are controlled by a built-in PLC control program for multi-point signal detection and control. The frequency, volume, COD, SS and other data of rainfall are stored and processed. The wastewater diversion time and flow rate are adjusted according to the test data to collect high-quality rainwater.
[0021] In this embodiment, the outlet of the rainwater lift pump 4 is connected to a three-way valve. One branch of the three-way valve is connected to the sand filter 6 via pipe two, and a solenoid valve is installed on pipe two. The other branch is connected to the PP module combination collection tank 2 via a flushing pipe, and a solenoid valve is installed on the flushing pipe. A rainwater sewage pump 5 is installed in the PP module combination collection tank, and the outlet of the rainwater sewage pump 5 is connected to the downstream rainwater pipe network. Solenoid valves one and two are electrically connected to the circuit integrated control system 12. Solenoid valve two is closed during normal operation. When cleaning the PP module combination collection tank 2, solenoid valve one is closed and solenoid valve two is opened to backwash the PP module combination collection tank 2 with raw water. The sewage after cleaning is discharged to the downstream rainwater pipe network by the rainwater sewage pump 5.
[0022] In this embodiment, a liquid level sensor is installed in the PP module combined collection tank 2 at the highest liquid level. When the collection tank reaches the highest water level, it transmits a command to the circuit integrated control system 12. The circuit integrated control system 12 then sends a command to the rainwater drainage pump 5 to start drainage and ensure that no overflow occurs.
[0023] In this embodiment, a sewage pump 8 is installed in the finished product equipment room 9. The outlet of the rainwater sewage pump 5 and the sewage pump 8 are connected to the downstream rainwater pipe network. The sewage pump 8 regularly discharges the water in the finished product equipment room 9 to keep the finished product equipment room 9 dry and clean.
[0024] In this embodiment, a level sensor 2 is installed inside the PP module clear water tank 10 at the lowest liquid level. The PP module clear water tank 10 is also connected to a tap water supply pipe. When the rainwater reserve in the PP module clear water tank 10 is exhausted, water is supplied through the tap water supply pipe to maximize the use of rainwater resources and save tap water resources.
[0025] In this embodiment, the rainwater lift pump 4, rainwater sewage pump 5, equipment room sewage pump 8, and rainwater reuse pump 11 are all installed in independent wells. The well is installed in the center of the water tank, and the bottom third of the effective water depth of the well wall is opened to facilitate water entry. The bottom is connected to the water tank to facilitate the deposition of impurities onto the sewage pump pit.
[0026] In this embodiment, the rainwater lift pump 4, rainwater sewage pump 5, flow-through ultraviolet sterilizer 7, equipment room sewage pump 8, rainwater reuse pump 11, level sensor one, and level sensor two are electrically connected to the circuit integrated control system 12. Solenoid valves can also be installed on each connecting pipe and the tap water supply pipe as needed. The solenoid valves are electrically connected to the circuit integrated control system 12. The control program of the circuit integrated control system 12 can be implemented by those skilled in the art through simple programming. Therefore, the control method and circuit connection will not be explained in detail in this invention.
[0027] Working Principle: During use, a stainless steel mesh is installed at the beginning of the water collection pipe to block large pieces of solid waste. Water quality and rainfall sensors are installed inside the pipe, controlled by a built-in PLC program for multi-point signal detection. The system stores and processes data such as rainfall frequency, volume, COD, and SS, adjusting the diversion time and flow rate based on the test data to collect high-quality rainwater. This high-quality rainwater is then collected through the prefabricated diversion well 1 and transported via pipeline 1 to the PP module combined collection tank 2 for temporary storage. The water lift pump 4 transports the raw rainwater from the PP module collection tank 2 to the sand filter 6 to remove impurities such as suspended solids (SS) from the rainwater. Then, it is transported to the PP module clear water tank 10. When utilizing rainwater, the rainwater reuse pump 11 transports the rainwater from the PP module clear water tank 10 to the flow-through ultraviolet sterilizer 7. The ultraviolet sterilizer 7 disinfects the rainwater before it is transported to the reuse pipeline to meet reuse requirements. When the rainwater reserve in the PP module clear water tank 10 is exhausted, water is supplied through the tap water supply pipe to maximize the use of rainwater resources and save tap water resources.
[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A rainwater harvesting utilization system characterized by: The application relates to a rainwater collection and reuse system, which comprises a flow discarding module, a collecting module, a conveying module and a finished product equipment room (9), wherein the flow discarding module comprises a finished product flow discarding well (1), the flow discarding module is used for identifying water quality and collecting high-quality rainwater, the collecting module comprises a PP module combined collecting pool (2), the PP module combined collecting pool (2) is connected with the finished product flow discarding well (1) through a pipeline one, and is used for temporarily storing rainwater raw water, the conveying module comprises a rainwater lifting pump (4) installed in the PP module combined collecting pool (2), a sand cylinder filter (6) installed in the finished product equipment room (9) and a PP module clean water pool (10), the outlet of the rainwater lifting pump (4) is connected with the inlet of the sand cylinder filter (6) through a pipeline two, the outlet of the sand cylinder filter (6) is connected with the PP module clean water pool (10) through a pipeline three, rainwater raw water in the PP module combined collecting pool (2) is conveyed to the sand cylinder filter (6) and then to the PP module clean water pool (10) through the work of the rainwater lifting pump (4), a rainwater reuse pump (11) is installed in the PP module clean water pool (10), a flow-through type ultraviolet sterilizer (7) is installed in the finished product equipment room (9), the outlet of the rainwater reuse pump (11) is connected with the flow-through type ultraviolet sterilizer (7) through a pipeline three, rainwater in the PP module clean water pool (10) is conveyed to the flow-through type ultraviolet sterilizer (7) through the work of the rainwater reuse pump (11), and the outlet is connected with a reuse pipe network.
2. The rainwater harvesting utilization system of claim 1, wherein: The inlet of the finished product flow discarding well (1) is connected with a water collecting pipe, a stainless steel grid is installed at the starting end of the water collecting pipe, and a water quality sensor and a rainfall sensor are installed in the water collecting pipe.
3. A rainwater harvesting system as claimed in claim 2, wherein: The outlet of the rainwater lifting pump (4) is connected with a three-way valve, one branch of the three-way valve is connected with the sand cylinder filter (6) through the pipeline two, an electromagnetic valve one is installed on the pipeline two, another branch is connected with the PP module combined collecting pool (2) through a flushing pipe, and an electromagnetic valve two is installed on the flushing pipe.
4. The rainwater harvesting utilization system of claim 3, wherein: A liquid level sensor one is arranged at the highest liquid level in the PP module combined collecting pool (2).
5. A rainwater harvesting system as claimed in claim 4, wherein: A rainwater sewage pump (5) is installed in the PP module combined collecting pool, an equipment room sewage pump (8) is installed in the finished product equipment room (9), and the outlets of the rainwater sewage pump (5) and the equipment room sewage pump (8) are connected with a downstream rainwater pipe network.
6. A rainwater harvesting system as claimed in claim 5, wherein: A liquid level sensor two is arranged at the lowest liquid level in the PP module clean water pool (10), and the PP module clean water pool (10) is further connected with a tap water supplementing pipe.
7. The rainwater harvesting utilization system of claim 5, wherein: The rainwater lifting pump (4), the rainwater sewage pump (5), the equipment room sewage pump (8) and the rainwater reuse pump (11) are all installed in independent well shafts.
8. The rainwater harvesting utilization system of claim 6, wherein: A circuit integrated control system (12) is further included, and the rainwater lifting pump (4), the rainwater sewage pump (5), the flow-through type ultraviolet sterilizer (7), the equipment room sewage pump (8), the rainwater reuse pump (11), the liquid level sensor one and the liquid level sensor two are electrically connected with the circuit integrated control system (12).