Rainwater collection and utilization device for house building

The rainwater collection device, with its multi-layered filtration structure and quick-release design, solves the problem of insufficient filtration function, achieving multi-stage filtration and convenient cleaning, thus improving the quality of rainwater and ease of use.

CN224244007UActive Publication Date: 2026-05-15CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD
Filing Date
2025-05-21
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The existing rainwater harvesting devices have insufficient filtration capacity in their filter baskets, lack a multi-stage filtration system, and require manual cleaning, which is both infrequent and cumbersome.

Method used

It adopts a multi-layer filtration structure, including a coarse filter plate, a filter screen and a drain pipe, and is designed as a multi-stage filtration system. Combined with a quick-release structure of threaded sleeve and rubber ring, it is easy to intercept and clean impurities.

Benefits of technology

It achieves multi-stage filtration of rainwater, extends the service life of the filtration system, simplifies the impurity cleaning process, and improves the water quality and ease of use of rainwater.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a rainwater collection and utilization device, belongs to the technical field of rainwater collection, and particularly relates to a house building rainwater collection and utilization device which comprises a flow guide pipe and a water tank. The mounting frame is fixedly mounted at the top of the water tank, and a collecting hopper is fixedly mounted on the mounting frame; the rainwater collecting and filtering device achieves the effects of better filtering and collecting rainwater and saving water resources, and solves the problems that an existing filtering basket is insufficient in filtering function, only large-size impurities are intercepted, a multi-stage filtering system is not arranged, the filtering basket still needs to be cleaned through manual intervention, and in order to consider labor cost, the cleaning period of the filtering basket is short, and the cleaning efficiency is high. And the replacement is relatively tedious.
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Description

Technical Field

[0001] This utility model relates to the field of rainwater harvesting technology, and in particular to a rainwater harvesting and utilization device for buildings. Background Technology

[0002] Rainwater harvesting devices are devices that collect rainwater for domestic use. They consist of a building roof and a collection pipe, and are generally installed on sloping houses. They have a good rainwater collection function, are easy to use, can make full use of rainwater, and can save on water bills.

[0003] A search revealed Chinese patent CN214329093U, which discloses a rainwater harvesting device for building construction, belonging to the field of rainwater harvesting technology. It includes a sludge trap, a filter basket installed inside the sludge trap, and a lifting mechanism for removing the filter basket from the sludge trap. The lifting mechanism includes a traction machine with a traction rope, the end of which is connected to the filter basket away from the traction machine. When the filter basket is full and needs cleaning, the traction rope is connected to the filter basket, and the traction machine lifts the filter basket out of the sludge trap. After emptying the filter basket, it is placed back into the sludge trap and lifted again by the lifting device, making the filter basket easy to lift and saving manpower.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The aforementioned patented filter baskets have insufficient filtration function, only intercepting large-volume impurities. However, they lack a multi-stage filtration system and still require manual cleaning. To account for labor costs, the cleaning cycle of the filter baskets is relatively short, and replacement is quite cumbersome, thus presenting certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a rainwater harvesting and utilization device for buildings. The multi-layer filter plate improves the quality of the collected water and facilitates its subsequent use.

[0007] The technical solution to achieve the purpose of this utility model is: a rainwater harvesting and utilization device for buildings, including a diversion pipe and a water tank, and further comprising;

[0008] The mounting frame is fixedly installed on the top of the water tank, and a collection hopper is fixedly installed on the mounting frame.

[0009] Preferably, an installation pipe is fixedly installed on the top of the water tank, the collection hopper is located directly below the guide pipe, the bottom of the collection hopper corresponds to the position of the installation pipe, a coarse filter plate is provided inside the collection hopper, and threaded sleeves are threadedly installed on both the bottom of the collection hopper and the outside of the installation pipe.

[0010] Preferably, a processing pipe is fixedly connected between the collection hopper and the installation pipe, a filter screen is fixedly installed inside the processing pipe, a sewage discharge pipe is fixedly connected to the outside of the processing pipe, a control valve is provided outside the sewage discharge pipe, and limit rings are fixedly installed at both ends of the processing pipe.

[0011] Preferably, a rubber ring is fixedly installed on the inner side of each threaded sleeve, and a bellows is fixedly installed at one end of each threaded sleeve, with one end of the bellows abutting against the outside of the collection hopper and the top of the water tank, respectively.

[0012] Compared with existing technologies, the significant advantages of this invention are:

[0013] Firstly, this utility model uses a coarse filter plate to intercept large impurities such as leaves adhering to rainwater, which then slide down to the ground via an inclined surface. The perforations inside the filter screen perform secondary filtration of the rainwater, thereby filtering and collecting the rainwater for subsequent use, saving resources, and avoiding the inconvenience caused by rainwater flooding the ground.

[0014] Secondly, the top of the filter screen of this utility model is relatively high. After impurities clog the lower holes, rainwater can fall through the higher holes, which makes the service life longer. The impurities can be discharged by opening the drain pipe.

[0015] Thirdly, this utility model allows the rubber ring to disengage from the treatment pipe by rotating the threaded sleeve, and the treatment pipe can be pulled to one side of the sewage pipe for disassembly and replacement, making the replacement of the treatment pipe quick and convenient, and more convenient to use. The corrugated pipe covers the threads to prevent rusting.

[0016] This invention addresses the shortcomings of existing filter baskets, which only intercept large-volume impurities but lack a multi-stage filtration system. Furthermore, the filter baskets still require manual cleaning, resulting in short cleaning cycles and cumbersome replacement processes due to labor costs. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural schematic diagram provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the collecting hopper and its connected mechanism provided by this utility model;

[0020] Figure 3 This is an exploded structural diagram of the collection hopper and its connected mechanism provided by this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the processing tube and its connected mechanism provided by this utility model;

[0022] Figure 5 This is an exploded structural diagram of the threaded sleeve and its connected mechanism provided by this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Flow guide pipe; 2. Water tank; 3. Mounting frame; 4. Collection hopper; 5. Coarse filter plate; 6. Installation pipe; 7. Treatment pipe; 8. Filter screen; 9. Sewage discharge pipe; 10. Limiting ring; 11. Threaded sleeve; 12. Rubber ring; 13. Corrugated pipe. Detailed Implementation

[0025] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0026] This utility model provides an improved rainwater harvesting and utilization device for buildings. The technical solution of this utility model is as follows:

[0027] like Figures 1-5 As shown, a rainwater harvesting and utilization device for buildings includes a diversion pipe 1 and a water tank 2, which filters and collects rainwater for reuse, saving water resources;

[0028] Mounting bracket 3 is fixedly installed on the top of water tank 2. A collection hopper 4 is fixedly installed on mounting bracket 3 to provide a support platform for the collection device and to assist in subsequent installation.

[0029] Furthermore, an installation pipe 6 is fixedly installed on the top of the water tank 2, and a collection hopper 4 is located directly below the guide pipe 1. The bottom of the collection hopper 4 corresponds to the position of the installation pipe 6. A coarse filter plate 5 is installed inside the collection hopper 4, and threaded sleeves 11 are threadedly installed on both the bottom of the collection hopper 4 and the outside of the installation pipe 6. The coarse filter plate 5 intercepts large impurities such as leaves adhering to the rainwater and slides them down to the ground through the inclined surface to avoid affecting the use.

[0030] As a further embodiment of this utility model, a processing pipe 7 is fixedly connected between the collection hopper 4 and the installation pipe 6. A filter screen 8 is fixedly installed inside the processing pipe 7, and a sewage pipe 9 is fixedly connected to the outside of the processing pipe 7. A control valve is provided on the outside of the sewage pipe 9. Limiting rings 10 are fixedly installed at both ends of the processing pipe 7. A protrusion is installed on the outside of the processing pipe 7, and the protrusion is inserted between the collection hopper 4 and the installation pipe 6 to facilitate the quick alignment and installation of the processing pipe 7, making it more convenient to use. Furthermore, the inclined surface and top of the filter screen 8 are provided with leakage holes, and the diameter of the leakage holes is smaller than the diameter of the through hole of the coarse filter plate 5, so that the filter screen 8 and the coarse filter plate 5 achieve different filtration effects.

[0031] Furthermore, a rubber ring 12 is fixedly installed on the inner side of each threaded sleeve 11, and a bellows 13 is fixedly installed on one end of each threaded sleeve 11. One end of the bellows 13 abuts against the outside of the collection hopper 4 and the top of the water tank 2, respectively, to protect the threads and prevent rainwater from causing the threads to rust, thus extending the service life of the device. In addition, a protective layer is sprayed on the outside of the threads to further prevent rusting.

[0032] The specific working method is as follows: the roof guide pipe 1 is installed in connection with the collection hopper 4. The collection hopper 4 is equipped with a 45° coarse filter plate 5 to intercept large debris such as leaves; the treatment pipe 7 uses a quick-release structure to connect the collection hopper 4 and the water tank 2; the connection is made by a threaded sleeve 11 with a protective layer, a double limit ring 10 structure to ensure installation positioning, a rubber ring 12 pressed into the connection seam to ensure sealing, a corrugated pipe 13 protective sleeve is added to the top of the water tank 2 to wrap the threaded connection to prevent rust corrosion, and the sewage pipe 9 is located on the upper inclined surface of the filter screen 8, maintaining a 5° inclination to facilitate slag discharge; for filtration treatment, the first step is primary filtration: the coarse filter plate 5 inside the collection hopper 4. (10mm aperture), then fine filtration: filter screen 8 inside treatment pipe 7 (2mm aperture, double-layer leakage design), and finally final filtration: water tank 2 inlet interception net. Filter screen 8 adopts a redundant design, with 30% of the leakage holes preset at the top to achieve gradual clogging. Regarding the regular maintenance cycle, the coarse filter plate 5 is cleaned daily, and the filter screen 8 is drained monthly (through the bottom drain valve). The replacement standard for filter screen 8 is: when 80% of the leakage holes are blocked, the entire filter screen 8 should be replaced. In emergency situations, the top spare leakage holes can be used for a short period of time. In addition, waterproof sealant should be applied before installing new pipes, and the rubber ring 12 needs to be maintained by applying silicone oil regularly (quarterly).

[0033] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A rainwater harvesting and utilization device for buildings, comprising a guide pipe (1) and a water tank (2), characterized in that: Also includes; Mounting bracket (3) is fixedly mounted on the top of water tank (2), and a collection hopper (4) is fixedly mounted on the mounting bracket (3).

2. The rainwater harvesting and utilization device for buildings according to claim 1, characterized in that: The water tank (2) is fixedly installed with an installation pipe (6), and the collection hopper (4) is located directly below the guide pipe (1). The bottom of the collection hopper (4) corresponds to the position of the installation pipe (6). A coarse filter plate (5) is provided inside the collection hopper (4). Threaded sleeves (11) are threadedly installed on both the bottom of the collection hopper (4) and the outside of the installation pipe (6).

3. A rainwater harvesting and utilization device for buildings according to any one of claims 1-2, characterized in that: A processing pipe (7) is fixedly connected between the collection hopper (4) and the installation pipe (6). A filter screen (8) is fixedly installed inside the processing pipe (7). A sewage pipe (9) is fixedly connected to the outside of the processing pipe (7). A control valve is provided outside the sewage pipe (9). Limit rings (10) are fixedly installed at both ends of the processing pipe (7).

4. A rainwater harvesting and utilization device for buildings according to claim 2, characterized in that: A rubber ring (12) is fixedly installed on the inner side of each threaded sleeve (11), and a bellows (13) is fixedly installed on one end of each threaded sleeve (11). One end of the bellows (13) abuts against the outside of the collection hopper (4) and the top of the water tank (2).