Modular combination rainwater storage tank

The modular design and power-driven cleaning device solve the problems of clogging and inconvenient transportation and installation of the rainwater storage tank filtration system, achieving efficient filtration and convenient installation.

CN224591520UActive Publication Date: 2026-08-04TIANJIN GOLDEN ANT CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN GOLDEN ANT CONSTR ENG CO LTD
Filing Date
2025-08-08
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing rainwater storage tanks have filtration systems that are prone to clogging and are difficult to clean, and their monolithic construction makes transportation and installation inconvenient.

Method used

It adopts a modular design, combining a filter module and a storage module. The filter screen is cleaned by an impeller-driven cleaning brush, and the modules are stably connected by a toothed plate and a spring.

Benefits of technology

It effectively prevents filter clogging, improves filtration efficiency, simplifies the installation and transportation of modular combinations, and ensures the structural stability of the water storage tank.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to rainwater collection and utilization equipment technical field discloses a kind of modular combination rainwater storage tank, including storage module, the water inlet two of storage module top is provided, the water outlet is fixedly connected with outside of storage module, the filter module is arranged in the top of storage module, the water inlet one is fixedly connected with the top of filter module, the drain outlet is provided in the bottom of filter module, the fixed frame is fixedly connected in filter module inside, the rotating rod is rotatably connected with outside of fixed frame, the fixed assembly is provided with outside of storage module.In the utility model, by the installation impeller in filter module, rainwater can drive impeller rotation, and then drive rotating rod rotation, rotating rod drives cleaning brush rotation again, by cleaning brush and filter screen contact, prevent its filter hole blockage, ensure filtering effect, realize filter screen filter hole anti-blocking, guarantee filtering efficiency stability, improve the sustained operation capability of rainwater filter device.
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Description

Technical Field

[0001] This utility model relates to the field of rainwater harvesting and utilization equipment technology, and in particular to a modular combined rainwater storage tank. Background Technology

[0002] Rainwater, formed by the condensation of atmospheric water vapor, is natural precipitation that nourishes ecosystems and also forms concentrated runoff. Rainwater storage tanks collect and temporarily store rainwater, which, after simple filtration, can be used for non-potable applications such as irrigation. This can alleviate flooding, replenish groundwater, and reduce reliance on tap water, making it a practical tool for the efficient use of rainwater resources. Storing rainwater is a scientific management of natural resources, offering benefits in water conservation, flood prevention, and ecological protection. Modular design involves breaking down the system into independent modules with standardized interfaces, which can then be assembled as needed. This approach improves reusability, reduces costs, and responds to diverse needs. Modular rainwater storage tanks exemplify this approach. Each module has an independent water storage space, can be quickly assembled and expanded, flexibly adapts to different sites, and meets specific needs, combining practicality with environmental friendliness.

[0003] Existing rainwater storage tanks suffer from numerous problems requiring improvement in practical applications. Firstly, their filtration systems have significant flaws. With prolonged use, the filters designed to trap impurities in rainwater are prone to clogging, drastically reducing rainwater collection efficiency and affecting storage capacity. Furthermore, traditional cleaning methods rely on manual operation, which is time-consuming, labor-intensive, and may even lead to further damage to the equipment if cleaning is not done promptly. In addition, the existing storage tanks mostly employ a monolithic construction, which greatly inconveniences transportation and installation, especially in confined spaces or complex environments, significantly increasing the difficulty of handling and deployment. Therefore, a modular, combined rainwater storage tank is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a modular combined rainwater storage tank, which aims to improve the problems of existing rainwater storage tanks, such as easy clogging of the filtration system, troublesome cleaning, and inconvenient transportation and installation due to the integral structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a modular combined rainwater storage tank, comprising a storage module, a second water inlet at the top of the storage module, a water outlet fixedly connected to the outside of the storage module, a filter module at the top of the storage module, a first water inlet fixedly connected to the top of the filter module, a drain outlet at the bottom of the filter module, a fixed frame fixedly connected inside the filter module, a rotating rod rotatably connected to the outside of the fixed frame, an impeller fixedly connected to the top of the rotating rod, cleaning brushes fixedly connected to both sides of the rotating rod, a filter screen fixedly connected inside the filter module, a drain outlet fixedly connected to the bottom of the filter screen, and a fixing component on the outside of the storage module.

[0006] As a further description of the above technical solution: The fixing assembly includes multiple fixing seats, each fixing seat has an internal mounting groove, a guide rod is slidably connected to the outside of the mounting groove, a second toothed plate is fixedly connected to the outside of the guide rod, a spring is fixedly connected to the outside of the second toothed plate, and multiple first toothed plates are fixedly connected to the outside of the filter module.

[0007] As a further description of the above technical solution: The first and second locking plates engage, and the second locking plate is slidably connected inside the mounting groove.

[0008] As a further description of the above technical solution: The cleaning brush is rotatably connected to the outside of the filter.

[0009] As a further description of the above technical solution: The spring is fixedly connected inside the mounting groove on the side away from the toothed plate.

[0010] As a further description of the above technical solution: The mounting base is fixedly connected to the outside of the storage module.

[0011] As a further description of the above technical solution: The second water inlet is located at the bottom of the drain outlet, and the sewage outlet is fixedly connected to the outside of the filter module.

[0012] As a further description of the above technical solution: The filter module has multiple handles fixedly connected to its outer side, and the storage module has multiple handles fixedly connected to its outer side.

[0013] This utility model has the following beneficial effects: 1. In this utility model, when filtering rainwater, the filter screen is easily clogged due to debris such as fallen leaves, which affects the filtration efficiency. Therefore, an impeller is installed in the filter module. Rainwater can drive the impeller to rotate, which in turn drives the rotating rod to rotate. The rotating rod then drives the cleaning brush to rotate. The cleaning brush contacts the filter screen to prevent its filter screen from clogging, thus ensuring the filtration effect. This achieves anti-clogging of the filter screen and filter screen, ensures stable filtration efficiency, and improves the continuous operation capability of the rainwater filtration device.

[0014] 2. In this utility model, by pulling the guide rod, the second toothed plate moves and compresses the spring; after the second toothed plate is completely retracted into the mounting groove, the filter module is placed on top of the storage module, aligning the drain outlet and the second inlet; after the filter module reaches the preset position, the guide rod is released, and the spring rebounds, causing the second toothed plate to move away from the mounting groove and pull together with the first toothed plate, thus achieving a stable fixation between the two. In daily use, the spring is in a compressed state, pushing the two toothed plates to keep them locked together, ensuring that the module is fixed and stable. This realizes the convenience of transporting and installing the water storage tank, ensures the stability of the fixation between modules, and ensures the normal operation of the water storage tank. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a modular combined rainwater storage tank proposed in this utility model; Figure 2 This is a schematic diagram of the toothed plate of a modular combined rainwater storage tank proposed in this utility model. Figure 3 This is a schematic diagram of the impeller structure of a modular combined rainwater storage tank proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the filter screen of a modular combined rainwater storage tank proposed in this utility model; Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0016] Legend: 1. Filter module; 2. Storage module; 3. Inlet 1; 4. Impeller; 5. Mounting bracket; 6. Rotating rod; 7. Cleaning brush; 8. Filter screen; 9. Drain outlet; 10. Drain outlet; 11. Inlet 2; 12. Outlet; 13. Toothed plate 1; 14. Mounting base; 15. Mounting groove; 16. Guide rod; 17. Spring; 18. Toothed plate 2; 19. Handle. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-5This utility model provides an embodiment of a modular combined rainwater storage tank, including a storage module 2. The top of the storage module 2 has a second water inlet 11, and an outlet 12 is fixedly connected to the outside of the storage module 2. A filter module 1 is installed on the top of the storage module 2, with a first water inlet 3 fixedly connected to its top. A drain outlet 10 is installed at the bottom of the filter module 1. A fixing frame 5 is fixedly connected inside the filter module 1, and a rotating rod 6 is rotatably connected to the outside of the fixing frame 5. An impeller 4 is fixedly connected to the top of the rotating rod 6, and cleaning brushes 7 are fixedly connected to both sides of the rotating rod 6. A filter screen 8 is fixedly connected inside the filter module 1, and a drain outlet 9 is fixedly connected to the bottom of the filter screen 8. Fixing components are installed on the outside of the storage module 2. The storage module 2 is the core part for storing rainwater. The system provides dedicated storage space for rainwater, enabling temporary storage. By storing rainwater, it can be used for irrigation when needed, alleviating flooding, replenishing groundwater, and reducing reliance on tap water, demonstrating efficient utilization of rainwater resources. Inlet 11 corresponds to outlet 10, receiving filtered rainwater discharged from outlet 10, allowing it to enter storage module 2. Outlet 12 allows rainwater to flow out of storage module 2 when needed, providing an outlet for rainwater utilization, facilitating its use in irrigation and other scenarios. Filter module 1, as the first treatment stage for rainwater entering the storage system, integrates filtration and cleaning components, performing preliminary filtration and interception of rainwater. The system intercepts impurities, providing cleaner rainwater for subsequent storage and ensuring the quality of the stored rainwater. Inlet 3 serves as the entrance for rainwater into filter module 1, providing a channel for the rainwater to enter the system and ensuring smooth entry into filter module 1 for treatment. Outlet 10 is the channel for filtered rainwater to flow from filter module 1 into storage module 2, ensuring the filtered rainwater flows smoothly into storage module 2 for storage. The fixing frame 5 fixes and supports the rotating rod 6, ensuring its stable rotation and the normal operation of impeller 4 and cleaning brush 7, maintaining the stable operation of the filtration system. Rotating rod 6 transmits the rotation of impeller 4 to cleaning brush 7, and is a key component for power transmission. When rainwater flows through, impeller 4 is driven to rotate, allowing the rainwater to enter the system. The rotating rod 6 drives the cleaning brush 7 to work, providing power to prevent the filter screen 8 from clogging. The cleaning brush 7 can clean impurities on the filter screen 8, effectively preventing clogging and ensuring the filtration efficiency of the filter screen 8. The filter screen 8 can intercept impurities in rainwater, filter and purify the rainwater, improve the quality of rainwater entering the storage module 2, and prevent impurities from entering the storage module 2 and affecting storage and subsequent use. The drain port 9 can discharge the impurities cleaned by the cleaning brush 7 into the filter module 1, preventing impurities from accumulating in the filter module 1 and ensuring its normal working environment. The fixing component can firmly connect the filter module 1 and the storage module 2 together, ensuring the stability of the modular combination storage box structure, while facilitating the installation and disassembly of the modules and adapting to flexible deployment in different sites and needs.

[0019] The fixing assembly includes multiple fixing seats 14, each with an internal mounting groove 15. A guide rod 16 is slidably connected to the outside of the mounting groove 15, and a second toothed plate 18 is fixedly connected to the outside of the guide rod 16. A spring 17 is fixedly connected to the outside of the second toothed plate 18. Multiple first toothed plates 13 are fixedly connected to the outside of the filter module 1. The fixing seats 14 provide a base for mounting and supporting other components of the fixing assembly and are an important part of the fixing assembly. The mounting groove 15 provides space for the movement of the guide rod 16 and the second toothed plate 18. By pulling the guide rod 16, the second toothed plate 18 can be moved, facilitating the installation and installation of the filter module 1 and the filter module 1. The installation and removal of storage module 2 involves the engagement of toothed plate 2 18 with toothed plate 13. Under the action of spring 17, toothed plate 18 can be tightly fitted to toothed plate 13, thus fixing filter module 1 and storage module 2. Spring 17 is normally in a compressed state, applying a pushing force to toothed plate 2 18, making toothed plate 2 18 tightly engaged with toothed plate 13, enhancing the stability of the connection between filter module 1 and storage module 2. Toothed plate 13 and toothed plate 2 18 engage with the fixing components to achieve a fixed connection between filter module 1 and storage module 2, ensuring the stability of the connection between the two modules and ensuring the structural stability of the entire storage box.

[0020] The locking plates 13 and 18 engage to ensure a secure connection between the filter module 1 and the storage module 2, preventing separation of the modules due to external forces or other factors during use and ensuring the stability of the entire rainwater storage tank structure.

[0021] The cleaning brush 7 is rotatably connected to the outside of the filter screen 8, allowing the cleaning brush 7 to rotate on the outside of the filter screen 8. When the cleaning brush 7 rotates, it can clean the surface of the filter screen 8 from all angles, effectively removing impurities from the filter screen 8, preventing the filter screen 8 from clogging, ensuring the filtration efficiency of the filter screen 8, reducing the frequency and difficulty of manual cleaning, and ensuring the smooth operation of the rainwater filtration process.

[0022] The side of spring 17 away from the first toothed plate 13 is fixedly connected inside the mounting groove 15, which can provide stable elastic force for the second toothed plate 18.

[0023] The mounting base 14 is fixedly connected to the outside of the storage module 2, providing a stable mounting base for other components of the fixing assembly, ensuring that the fixing assembly can be firmly set on the storage module 2, thereby effectively fixing the filter module 1 and the storage module 2 and ensuring the stability of the entire device structure.

[0024] The second water inlet 11 is located at the bottom of the drain outlet 10, and the sewage outlet 9 is fixedly connected to the outside of the filter module 1. The second water inlet 11 allows rainwater filtered by the filter module 1 to flow smoothly into the second water inlet 11 through the drain outlet 10 and then into the storage module 2. The sewage outlet 9 facilitates the timely discharge of impurities cleaned by the cleaning brush 7 from the filter module 1, preventing impurities from accumulating inside the filter module 1.

[0025] Multiple handles 19 are fixedly connected to the outside of the filter module 1 and the storage module 2. The handles 19 facilitate the operation of the filter module 1 and the storage module 2, especially during transportation and installation, providing convenient gripping points for handling, reducing the difficulty of handling, and improving the efficiency of transportation and installation.

[0026] Working principle: Rainwater flows into the filter module 1 through inlet 3 and is filtered through the filter screen 8. The filtered rainwater is discharged from the filter module 1 through the drain outlet 10 and then enters the storage module 2 through inlet 11 to store the rainwater. When the stored rainwater needs to be used, the outlet 12 can be opened by controlling the valve to discharge the stored rainwater into the storage module 2 for use.

[0027] During the rainwater filtration process, rainwater contains debris such as fallen leaves, which can easily clog the filter holes of the filter screen 8, thereby reducing the filtration efficiency of the filter screen 8. To address this issue, an impeller 4 is installed inside the filter module 1. When rainwater flows, it drives the impeller 4 to rotate, which in turn drives the rotating rod 6 to rotate. The rotating rod 6 then causes the cleaning brush 7 to rotate synchronously. Through the continuous contact between the cleaning brush 7 and the filter screen 8, the filter holes of the filter screen 8 can be effectively prevented from becoming clogged, ensuring that the filter screen 8 always maintains a good filtration effect.

[0028] Given that storage tanks often employ an integral structure, which presents significant inconveniences in transportation and installation, a modular design is adopted for the water storage tank. To ensure the normal operation of the water storage tank, it is necessary to achieve stable fixation between modules. The specific operation process is as follows: Pulling the guide rod 16 will cause the second locking plate 18 to move, thereby compressing the spring 17. When the second locking plate 18 is fully retracted into the mounting groove 15, the filter module 1 is placed on top of the storage module 2, and the drain outlet 10 is precisely aligned with the second inlet 11. When the filter module 1 reaches the preset position, the guide rod 16 is released. At this time, the spring 17 will have a rebound effect, causing the second locking plate 18 to move, gradually moving it away from the mounting groove 15, and then pulling it together with the first locking plate 13. This achieves stable fixation between the filter module 1 and the storage module 2. Under normal conditions, the spring 17 is in a compressed state, which can push the second locking plate 18 and the first locking plate 13 to remain engaged, thereby ensuring that the filter module 1 and the storage module 2 always maintain a stable fixed state.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular combined rainwater storage tank comprising a storage module (2), characterized in that: The storage module (2) has a water inlet 2 (11) at the top, and a water outlet (12) is fixedly connected to the outside of the storage module (2). The storage module (2) has a filter module (1) at the top, and a water inlet 1 (3) is fixedly connected to the top of the filter module (1). The filter module (1) has a drain outlet (10) at the bottom. The filter module (1) has a fixed frame (5) inside, and a rotating rod (6) is rotatably connected to the outside of the fixed frame (5). An impeller (4) is fixedly connected to the top of the rotating rod (6). Cleaning brushes (7) are fixedly connected to both sides of the rotating rod (6). A filter screen (8) is fixedly connected inside the filter module (1). A drain outlet (9) is fixedly connected to the bottom of the filter screen (8). A fixing component is provided on the outside of the storage module (2).

2. A modular combination rainwater storage tank as claimed in claim 1, wherein: The fixing assembly includes multiple fixing seats (14), the fixing seats (14) have an installation groove (15) inside, a guide rod (16) is slidably connected to the outside of the installation groove (15), a second toothed plate (18) is fixedly connected to the outside of the guide rod (16), a spring (17) is fixedly connected to the outside of the second toothed plate (18), and multiple first toothed plates (13) are fixedly connected to the outside of the filter module (1).

3. A modular combination rainwater storage tank as claimed in claim 2, wherein: The first toothed plate (13) and the second toothed plate (18) engage, and the second toothed plate (18) is slidably connected inside the mounting groove (15).

4. A modular combination rainwater storage tank as claimed in claim 1, wherein: The cleaning brush (7) is rotatably connected to the outside of the filter (8).

5. A modular combination rainwater storage tank as claimed in claim 2, wherein: The spring (17) is fixedly connected to the mounting groove (15) on the side away from the toothed plate (13).

6. A modular combination rainwater storage tank as claimed in claim 2, wherein: The mounting base (14) is fixedly connected to the outside of the storage module (2).

7. A modular combination rainwater storage tank as claimed in claim 1, wherein: The second water inlet (11) is located at the bottom of the drain outlet (10), and the sewage outlet (9) is fixedly connected to the outside of the filter module (1).

8. A modular combination rainwater storage tank according to claim 1, wherein: The filter module (1) has multiple handles (19) fixedly connected to its outer side, and the storage module (2) has multiple handles (19) fixedly connected to its outer side.