Rainwater purification and storage device
By integrating a transparent purification container, a diversion mechanism, and an ultrasonic generator into a modular design, and utilizing a convex lens to focus sunlight to accelerate evaporation and a telescopic tube to divert water, the high energy consumption, high cost, and secondary pollution problems of existing rainwater purification technologies are solved, achieving low-cost and low-energy rainwater purification and storage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NORTHWEST A & F UNIV
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-26
AI Technical Summary
Existing rainwater purification technologies suffer from problems such as large land area requirements, complex maintenance, high energy consumption, high cost, and potential secondary pollution, making it difficult to meet the low-cost, low-energy consumption needs of arid regions.
It adopts a modular design that integrates a transparent purification container, a diversion mechanism, a power storage controller, and an ultrasonic generator. It uses a convex lens to focus sunlight to accelerate evaporation, and combines telescopic tubes and gravity diversion to achieve rainwater purification and storage through the synergistic effect of natural evaporation and ultrasonic waves.
It achieves low-cost, low-energy rainwater purification, reduces the footprint, simplifies the installation process, avoids the use of chemical agents, improves purification efficiency, and reduces maintenance costs and environmental pollution risks.
Smart Images

Figure CN224281432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water resource purification technology, specifically to a rainwater purification and storage device. Background Technology
[0002] Rainwater harvesting can alleviate water shortages, but the storage process can cause water pollution, primarily due to particulate matter such as silt, a large number of microorganisms, and calcium and magnesium ions. Therefore, maintaining water quality standards during rainwater harvesting is crucial. Currently, various rainwater purification technologies are available, but most have limitations. Traditional rainwater purification methods mainly include physical filtration, chemical treatment, and biological treatment. Physical filtration methods, such as screen filtration and sand filtration, are simple and easy to implement, but they are ineffective at removing microorganisms and dissolved pollutants, and the filter media is prone to clogging, requiring frequent replacement or cleaning. Chemical treatment methods, such as chlorine disinfection and ozone oxidation, can effectively kill microorganisms, but may produce secondary pollution, posing potential risks to human health and the environment. Biological treatment methods, such as biofilm methods and wetland systems, offer good purification effects, but require large land areas, have long construction periods, and are complex to maintain and manage. Furthermore, these purification technologies are mostly energy-intensive and expensive to operate, making them unsuitable for the needs of arid regions for low-cost, low-energy rainwater purification devices. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a rainwater purification and storage device to alleviate water quality issues in rainwater storage applications.
[0004] To achieve the above technical objectives, the adopted technical solution is as follows: a rainwater purification and storage device, comprising a support, a purification container, a diversion mechanism, a water storage tank, an underground water cellar, and a power storage controller capable of receiving weather information. The purification container is fixed above the water storage tank by the support. The purification container is made of transparent material and has an upward-opening water receiving cavity. Several convex lenses are distributed inside the purification container wall to concentrate sunlight into the water storage tank. The outer surface of the purification container is inclined downward, and an orifice connected to the water receiving cavity is opened at the lowest point of the inclination. The inlet of the diversion mechanism, which can be extended or rotated, is set corresponding to the orifice. The diameter of the inlet of the diversion mechanism is larger than the diameter of the orifice. The diversion mechanism is connected to the power storage controller. The power storage controller controls the outlet of the diversion mechanism to be set corresponding to the inlet of the water storage tank or the underground water cellar according to the weather information.
[0005] The beneficial effects are: This device integrates rainwater collection, purification, and storage, reducing the adverse effects of microorganisms and harmful chemicals in the stored rainwater on water quality. The use of a diversion mechanism for collecting and storing evaporated rainwater reduces the footprint and simplifies the installation process. Its modular design facilitates installation and maintenance. Compared to existing chemical treatment devices, individual components can be replaced and installed, reducing maintenance costs. Compared to existing physical filtration devices, rainwater purification through natural evaporation avoids the use of chemical agents, reducing secondary pollution to the environment.
[0006] Furthermore, the water storage tank is also equipped with an ultrasonic generator and a temperature sensor. The ultrasonic generator and the temperature sensor are respectively connected to the energy storage controller. The energy storage controller controls the ultrasonic generator to operate at different frequencies based on the temperature information of the water storage tank collected by the temperature sensor.
[0007] The beneficial effects are: the ultrasonic generator can be adjusted and increased according to the climate conditions and rainwater pollution levels in different regions to achieve better evaporation. Through the synergistic effect of natural evaporation and ultrasonic waves, microorganisms, suspended solids and organic matter in rainwater can be effectively removed, thereby improving evaporation efficiency.
[0008] Furthermore, the outer surface of the purification container is hemispherical or conical in shape.
[0009] The beneficial effects are: the hemispherical or conical shape ensures a smooth inner surface of the purification container, accelerates the downward convergence of evaporating water on the outer surface of the purification container, and thus ensures full collection.
[0010] Furthermore, the drainage mechanism includes a hollow telescopic tube and an electric mechanism for controlling the extension and retraction of the telescopic tube, the electric mechanism being connected and controlled by an energy storage controller.
[0011] The beneficial effects are: without changing the diversion mechanism, it is possible to collect and store rainwater in compliance with standards, and the collection and transfer of rainwater can be completed by expanding and contracting the expansion and contraction of the expansion and contraction of the expansion pipe.
[0012] Furthermore, the telescopic tube is a telescopic sleeve or a corrugated tube.
[0013] The benefits are: the cost of telescopic sleeves or corrugated pipes is low, the technology is mature, and the telescopic effect is good.
[0014] Furthermore, the electric mechanism is an electric push rod, a motor connected to a gear and rack mechanism, or a motor connected to a lead screw mechanism.
[0015] The beneficial effects are: the electric mechanism, combined with different telescopic tubes, allows for the selection of different structures for combination according to different working conditions and costs, making installation and use flexible.
[0016] Furthermore, the diversion mechanism is externally wrapped with a sleeve, which has a first outlet corresponding to the water storage tank and a second outlet that is sealed and connected to the inlet of the underground water cellar.
[0017] The beneficial effects are: the sleeve protects and supports the diversion mechanism, and at the same time, it can further protect the filtered condensate, preventing rainwater and dust from contaminating the condensate again. In addition, the sealed connection with the inlet of the underground water cellar also protects the inlet of the underground water cellar.
[0018] Furthermore, the diversion mechanism is inclined toward the underground water cellar.
[0019] The beneficial effect is that it eliminates the need for a power supply system and uses gravity to quickly collect condensate.
[0020] Furthermore, the energy storage controller is also connected to a solar panel.
[0021] The benefits are: using solar panels to store and supply electricity reduces additional energy input and significantly lowers operating costs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a top view of the structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the oblique structure of this utility model;
[0025] Figure 4 This is a side view of the structure of this utility model;
[0026] Figure 5 This is a schematic diagram of the telescopic tube structure of this utility model;
[0027] Figure 6 This is a side view of the drainage mechanism of this utility model.
[0028] Figure 7 This is a flowchart of the present invention;
[0029] Figure 8 This is a cross-sectional view of the purification container of this utility model;
[0030] In the diagram: 1. Support frame, 2. Purification container, 3. Drainage mechanism, 4. Water storage tank, 5. Underground water cellar, 6. Energy storage controller, 7. Ultrasonic generator, 8. Temperature sensor, 9. Sleeve, 10. Solar panel, 2-1. Inner layer, 2-2. Convex lens layer, 2-3. Outer layer, 201. Water receiving cavity, 202. Convex lens, 203. Orifice, 301. Telescopic tube, 302. Electric mechanism, 501. Water inlet, 901. First water outlet, 902. Second water outlet. Detailed Implementation
[0031] The preferred embodiments of the present invention are given below with reference to the accompanying drawings to illustrate the technical solution of the present invention in detail. The corresponding accompanying drawings will be provided for detailed description of the present invention. It should be particularly noted that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit or restrict the present invention.
[0032] Example 1
[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , one A rainwater purification and storage device includes a support frame 1, a purification container 2, a diversion mechanism 3, a water storage tank 4, an underground water cellar 5, and a power storage controller 6 capable of receiving weather information. The purification container 2 is fixed above the water storage tank 4 by the support frame 1. The purification container 2 is used to collect rainwater into the water storage tank 4 and purify the rainwater in the water storage tank 4.
[0034] like Figure 8As shown, the purification container 2 is made of transparent material and has an upward-opening water receiving cavity 201 for collecting rainwater. Several convex lenses 202 are distributed inside the wall of the purification container 2 to concentrate sunlight into the water storage tank. The arrangement of the convex lenses 202 is not limited, but a honeycomb arrangement is preferred to maximize the number of convex lenses 202. The convex lens layer increases the surface temperature of the water storage tank by focusing sunlight, accelerating the evaporation process. The outer surface of the purification container 2 is tilted downwards to guide the condensate that evaporates onto the outer surface to a lower level. An orifice 203, connected to the water receiving chamber 201, is provided at the lowest point of the inclined structure. The inlet of the retractable or rotatable diversion mechanism 3 is corresponding to the orifice 203. The orifice 203 is used to guide the collected rainwater into the diversion mechanism 3. The diameter of the inlet of the diversion mechanism 3 is larger than the diameter of the orifice 203 to ensure sufficient collection of flowing condensate and rainwater. The diversion mechanism 3 is connected to the energy storage controller 6. The energy storage controller 6 controls the outlet of the diversion mechanism 3 to correspond to the inlet 501 of the water storage tank 4 or the underground water cellar 5 based on weather information. The energy storage controller 6 can monitor rainfall in real time to ensure that the entire device can respond promptly during rainfall. In the retracted state, the lower end of the diverter is located in the target water storage tank; in the extended state, it extends to the inlet 404 of the underground water cellar to store purified water, which can be pumped out for use. During rainy days, the drainage mechanism 3 collects rainwater and fills the storage tank 4. During sunny days, the drainage mechanism 3 collects the condensate that evaporates from the storage tank 4 onto the outer surface of the purification container 2 and drains it into an underground water cellar for storage. This device achieves integrated rainwater evaporation-condensation-storage treatment, providing low-cost, low-energy rainwater purification, effectively removing microorganisms and impurities, and alleviating rainwater quality problems. It should be noted that all electrical connections are waterproof and leak-proof.
[0035] like Figure 8 As shown, the specific structure of the purification container 2 is as follows: it includes an inner layer 2-1, a convex lens layer 2-2, and an outer layer 2-3. The inner layer 2-1 is a transparent hemispherical structure made of corrosion-resistant high-density polyethylene (HDPE), with an inner diameter of 2 meters and a wall thickness of 5 millimeters. The top opening allows direct reception and passage of water into the target water storage tank through the orifice 103, while preventing water from seeping into the convex lens layer 2-2. The convex lens layer 2-2 consists of multiple convex lenses, evenly embedded in the inner layer 2-1, arranged in a honeycomb pattern to ensure that the focused light spot covers the water surface of the inner water storage tank, maximizing the use of solar energy to raise the water surface temperature. The outer layer 2-3 is a closed hemispherical structure made of transparent polycarbonate (PC). The inner and outer layers 2-3 are sealed after being joined together to prevent rainwater from flowing into the convex lens layer 2-2.
[0036] The energy storage controller 6 provides power to all connected components, and its built-in controller enables weather information reception and component control. The energy storage controller is a conventional technology and will not be described in detail further.
[0037] The water storage tank 4 is also equipped with an ultrasonic generator 7 and a temperature sensor 8. The ultrasonic generator 201 has a power of 200W and a frequency range of 20-100kHz. It is fixed to the bottom of the tank by a bracket, with the emission direction vertically upward. The ultrasonic vibration accelerates the evaporation of rainwater and removes pollutants from the water. The ultrasonic generator 7 and the temperature sensor 8 are respectively connected to the energy storage controller 6. The energy storage controller 6 controls the ultrasonic generator 7 to operate at different frequencies based on the temperature information of the water storage tank 4 collected by the temperature sensor 8.
[0038] Temperature sensor 202: Installed on the four side walls of the water storage tank, it monitors the water temperature in real time and feeds the data back to the ultrasonic generator. When the water temperature is below 25℃, the ultrasonic frequency is automatically adjusted to 40kHz; when the water temperature is ≥25℃, the frequency is adjusted to 80kHz to enhance liquid surface disturbance and improve evaporation efficiency.
[0039] The outer surface of the purification container 2 is shaped like a hemisphere or a cone, both of which are easy to form.
[0040] like Figure 5 , Figure 6 As shown, the diversion mechanism 3 can adopt two structural designs: one is a rotatable outlet position change mechanism 3, and the other is an extension / telescopic structure. To reduce the footprint, the extension / telescopic structure is preferred. Specifically, the diversion mechanism 3 includes a hollow extension / telescopic tube 301 and an electric mechanism 302 that controls the extension / telescopic tube 301. The electric mechanism 302 is controlled by a battery controller 6. Both the extension / telescopic tube 301 and the electric mechanism 302 can be mounted on a support base, which is omitted in the figure.
[0041] The 301 telescopic tube is a telescopic sleeve or a corrugated pipe. For example, the telescopic sleeve... Figure 5 As shown, the bellows is as follows Figure 6 As shown. The electric mechanism 302 is an electric actuator, a motor connected to a gear and rack mechanism, or a motor connected to a lead screw mechanism. The telescopic sleeve can be used with the electric actuator or a motor connected to a lead screw mechanism; a specific structure is, for example, the telescopic spray arm of an automated cleaning robot. The bellows can be used with the electric actuator, a motor connected to a gear and rack mechanism, or a motor connected to a lead screw mechanism; a specific structure is, for example, the telescopic infusion tube of an automated experimental instrument. The structure of the bellows used with the motor connected to the gear and rack mechanism is as follows... Figure 6 As shown, a motor drives a gear to rotate, which in turn drives the bellows, which is fitted with a rack, to stretch or contract. The rack can be fixed to the bellows by adhesive. When using bellows, a bellows with a higher base can be used, as it has its own supporting force, or a mounting bracket can be installed below to support the bellows.
[0042] The drainage mechanism 3 is externally encased in a sleeve 9, which has a first outlet 901 corresponding to the water storage tank 4. There is no gap between the sleeve 9 and the inlet of the drainage mechanism 3, so rainwater and condensate only flow into the drainage mechanism 3. A second outlet 902 is also sealed to the inlet 501 of the underground water cellar 5, effectively closing the inlet 501 of the underground water cellar 5 and preventing external interference, receiving only the condensate flowing out of the drainage mechanism 3. If the sleeve 9 is present, it can be installed on a support base. The sleeve protects and supports the drainage mechanism 3. To prevent water entering the first outlet 901 from flowing into the second outlet 902, the telescopic pipe 301 can be extended or retracted along the bottom surface of the sleeve 9, with the outlet of the telescopic pipe 301 facing downwards.
[0043] The diversion mechanism 3 is tilted towards the underground water cellar to divert rainwater or condensate through gravity.
[0044] The battery storage controller 6 is also connected to a solar panel 10, which can charge the battery, enabling both charging and plug-in use and reducing costs.
[0045] like Figure 7 As shown, the specific working process of this device is as follows:
[0046] S1. Rainfall Phase
[0047] The energy storage controller 6 receives rainfall information and controls the outlet of the diversion mechanism 3 to move to a position above the water storage tank so that rainwater can be temporarily stored in the target water storage tank 4 through the diversion mechanism 3; the energy storage controller 6 receives rainfall information and turns off the ultrasonic generator 7, and the rainwater enters the target water storage tank 4 through the orifice 203 of the purification container 2 for temporary storage.
[0048] S2. Purification Phase
[0049] After the rain stops and the rainfall signal disappears, the energy storage controller 6 restarts the diversion mechanism 3, causing the outlet of the diversion mechanism 3 to move to the inlet 501 of the underground water cellar 5.
[0050] The ultrasonic generator 7 automatically adjusts the ultrasonic frequency based on the water temperature signal transmitted by the temperature sensor 8, inhibiting the growth of microorganisms while promoting the escape of water vapor.
[0051] The convex lens 202 of the convex lens layer 2-2 focuses sunlight, causing the surface temperature of the water storage tank 4 to rise and accelerate evaporation;
[0052] S3. Condensation and Collection
[0053] The evaporated water vapor condenses into liquid water on the outer layer 2-3 of the purification container 2, flows along the wall to the orifice 103, and is transported to the inlet 501 of the underground water cellar 5 through the inlet of the aligned diversion mechanism 3 for storage.
[0054] Example 2: The difference between this example and Example 1 is that, for high-pollution risk areas, the acoustic control system is upgraded to a multi-band collaborative mode: low-frequency ultrasound (28kHz) is used to decompose macromolecular organic matter, and high-frequency ultrasound (1MHz) generates cavitation effect to inactivate microorganisms. The rest of the settings are the same as in Example 1.
[0055] The above are merely preferred embodiments of this utility model and are not intended to limit or restrict this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection declared by this utility model.
Claims
1. A rainwater purification and storage device, characterized in that: The system includes a support frame (1), a purification container (2), a diversion mechanism (3), a water storage tank (4), an underground water cellar (5), and a power storage controller (6) capable of receiving weather information. The purification container (2) is fixed above the water storage tank (4) by the support frame (1). The purification container (2) is made of transparent material and has an upward-opening water receiving cavity (201). Several convex lenses (202) are distributed inside the wall of the purification container (2) to concentrate sunlight into the water storage tank. The outer surface of the purification container (2) faces downward. The structure is tilted, and an orifice (203) connected to the water receiving chamber (201) is opened at the lowest point of the tilt. The inlet of the diversion mechanism (3) that can extend or rotate is set to correspond to the orifice (203). The diameter of the inlet of the diversion mechanism (3) is larger than the diameter of the orifice (203). The diversion mechanism (3) is connected to the energy storage controller (6). The energy storage controller (6) controls the outlet of the diversion mechanism (3) to correspond to the inlet (501) of the water storage tank (4) or the underground water cellar (5) according to the weather information.
2. The rainwater purification and storage device as described in claim 1, characterized in that: The water storage tank (4) is also equipped with an ultrasonic generator (7) and a temperature sensor (8). The ultrasonic generator (7) and the temperature sensor (8) are respectively connected to the energy storage controller (6). The energy storage controller (6) controls the ultrasonic generator (7) to operate at different frequencies based on the temperature information of the water storage tank (4) collected by the temperature sensor (8).
3. The rainwater purification and storage device as described in claim 1, characterized in that: The outer surface of the purification container (2) is hemispherical or conical.
4. The rainwater purification and storage device as described in claim 1, characterized in that: The drainage mechanism (3) includes a hollow telescopic tube (301) and an electric mechanism (302) for controlling the extension and retraction of the telescopic tube (301). The electric mechanism (302) is connected and controlled by an energy storage controller (6).
5. The rainwater purification and storage device as described in claim 4, characterized in that: The telescopic tube (301) is a telescopic sleeve or a corrugated tube.
6. The rainwater purification and storage device as described in claim 4, characterized in that: The electric mechanism (302) is an electric push rod, a motor connected to a gear and rack mechanism, or a motor connected to a lead screw mechanism.
7. The rainwater purification and storage device as described in claim 4, characterized in that: The drainage mechanism (3) is wrapped with a sleeve (9), and the sleeve (9) is provided with a first outlet (901) corresponding to the water storage tank (4) and a second outlet (902) corresponding to the inlet (501) of the underground water cellar (5) and sealed.
8. The rainwater purification and storage device as described in claim 7, characterized in that: The diversion mechanism (3) is inclined toward the underground water cellar.
9. A rainwater purification and storage device as described in claim 1, characterized in that: The energy storage controller (6) is also connected to a solar panel (10).