Building roof drainage device

By introducing structures such as inclined filter plates, sliding boxes, and scrapers into the building roof drainage system, the problem of debris blockage is solved, achieving effective drainage and timely cleaning, and improving the service life and drainage efficiency of the system.

CN224119818UActive Publication Date: 2026-04-14LIAONING URBAN CONSTR DESIGN INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIAONING URBAN CONSTR DESIGN INST CO LTD
Filing Date
2026-03-04
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Traditional roof drainage systems are easily clogged by leaves, branches, garbage, and other debris, especially in autumn when there are many fallen leaves, which affects the drainage effect. In addition, the filter components are easily clogged, causing the drainage system to fail.

Method used

A building roof drainage device was designed, comprising an inclined filter plate, a sliding box, a scraper, and a waterproof electric actuator. The inclined filter plate filters impurities, the scraper cleans impurities, and floating plates and reflective stickers remind users to clean the device to prevent blockages.

Benefits of technology

It effectively prevents large impurities from clogging the drain pipe, ensuring smooth drainage, extending the service life of the device, and promptly reminding users to clean impurities to prevent affecting the drainage function.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224119818U_ABST
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Abstract

The utility model discloses a building roof drainage device, and relates to the technical field of building roof drainage. The water drainage device comprises a water drainage tank, a groove is formed in the position, close to the center, of the bottom end in the water drainage tank, an inclined filter plate is fixedly connected to the position, close to the groove, of the bottom end in the water drainage tank, a sliding box is slidably connected between the side walls of the water drainage tank and located above the inclined filter plate, and a scraper is slidably inserted into the bottom end of the sliding box. The scraping plate is in contact with the inclined filter plate; rainwater flowing into the drainage tank is filtered through the inclined filter plate, impurities in water are intercepted on the inclined filter plate, large impurities are prevented from blocking the drainage pipe, and smooth roof drainage work is guaranteed; impurities on the inclined filter plate can be scraped to the bottom end in the drainage box, blockage and damage of the impurities to the inclined filter plate are reduced, and the service cycle of the inclined filter plate and the whole device is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of building roof drainage technology, specifically a building roof drainage device. Background Technology

[0002] Roof drainage is a crucial functional system in building construction. It is primarily responsible for the timely and effective removal of rainwater, melted snow, and other liquid substances accumulated on the roof. Through well-designed drainage systems, such as gutters, downpipes, drainage ditches, and rain hoppers, water from the roof is guided to the ground drainage system or specific drainage areas. Roof drainage plays many important roles and offers numerous benefits. It effectively prevents water accumulation on the roof, prevents rainwater leakage into the building's interior, protects the roof structure and interior finishes and furniture from water damage, and extends the building's lifespan. Good drainage keeps the interior dry and comfortable, reduces mold growth, and provides a healthy environment for residents. To improve drainage efficiency, drainage devices should be installed at the edges of the roof.

[0003] Traditional roof drainage systems are prone to clogging by leaves, branches, garbage, and other debris, especially in autumn when there are many fallen leaves. Debris easily enters the drainage system, causing blockages and affecting drainage efficiency. Once the pipes are blocked, rainwater cannot drain in time and accumulates on the roof, increasing the roof's load. Some drainage systems use filters to prevent impurities from entering the drainage system, but after prolonged use, these filters are easily clogged by impurities, rendering them ineffective and rendering the drainage system useless. To address these problems, the inventor proposes a new roof drainage device. Utility Model Content

[0004] To address the problem that roof drainage devices are easily clogged by leaves, branches, garbage, and other debris during use, especially in autumn when there are many fallen leaves, the purpose of this utility model is to provide a roof drainage device for buildings.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a building roof drainage device, including a drainage box, a groove is provided at the bottom of the drainage box near the center, an inclined filter plate is fixedly connected at the bottom of the drainage box near the groove, a sliding box is slidably connected between the side walls of the drainage box and above the inclined filter plate, a scraper is slidably inserted at the bottom of the sliding box and contacts the inclined filter plate, an installation box is fixedly connected at the top of the drainage box near the center of the other side, a connecting shaft is symmetrically slidably inserted at the center of the installation box, a floating plate is fixedly connected between the bottom ends of the two connecting shafts and through the installation box, a top block is fixedly connected between the top ends of the two connecting shafts and through the installation box, and a plastic block is fixedly connected at the center of the bottom end of the top block.

[0006] Preferably, two sets of springs are symmetrically fixedly connected at the top of the scraper near the center, and the other end of the springs is fixedly connected to the inner wall of the sliding box. A drain pipe is fixedly connected at the bottom of the drain box and at the center of the groove.

[0007] Preferably, a U-shaped shaft is slidably inserted at one end of the drainage tank near the top corner, and one end of the U-shaped shaft is fixedly connected to the sliding box. A protective cylinder is provided at the side end of the drainage tank near the top corner.

[0008] Preferably, a waterproof electric actuator is provided inside the protective cylinder, and the output end of the waterproof electric actuator passes through the protective cylinder and is fixedly connected to the U-shaped shaft. Reflective stickers are symmetrically arranged at the center of both ends of the plastic block.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, rainwater flowing into the drainage tank is filtered by an inclined filter plate, which intercepts impurities in the water on the inclined filter plate, preventing large impurities from clogging the drainage pipe and ensuring the smooth operation of roof drainage. Secondly, the U-shaped shaft, sliding box and scraper are moved by the working waterproof electric push rod, which can scrape the impurities on the inclined filter plate to the bottom of the drainage tank, reducing the clogging and damage of impurities to the inclined filter plate and improving the service life of the inclined filter plate and the device as a whole.

[0011] 2. In this utility model, when a large amount of impurities accumulate in the drainage tank, causing the water level to rise, the float plate drives the top block to rise, exposing the reflective sticker on the plastic block. This can promptly remind the user to clean the impurities inside the drainage tank, preventing excessive impurities from affecting the normal drainage function of the device. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the drainage box of this utility model.

[0015] Figure 3 This is a schematic diagram of the drainage pipe structure of this utility model.

[0016] Figure 4 This is a cross-sectional view of the sliding box structure of this utility model.

[0017] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Drainage tank; 2. Mounting box; 21. Top block; 22. Plastic block; 23. Reflective sticker; 24. Connecting shaft; 25. Floating plate; 3. Sliding box; 31. Scraper; 32. Protective cylinder; 33. Waterproof electric actuator; 34. U-shaped shaft; 35. Spring; 4. Inclined filter plate; 41. Drainage pipe; 42. Groove. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-5 As shown, this utility model provides a technical solution: a building roof drainage device, including a drainage tank 1. A groove 42 is formed at the bottom near the center of the drainage tank 1. An inclined filter plate 4 is fixedly connected to the bottom near the groove 42. A sliding box 3 is slidably connected between the side walls of the drainage tank 1 and above the inclined filter plate 4. A scraper 31 is slidably inserted into the bottom of the sliding box 3, and the scraper 31 contacts the inclined filter plate 4. A mounting box 2 is fixedly connected to the top of the drainage tank 1 near the center of the other side. A connecting shaft 24 is symmetrically slidably inserted into the mounting box 2 near the center. A float 25 is fixedly connected between the bottom ends of the two connecting shafts 24 and through the mounting box 2. A top block 21 is fixedly connected between the top ends of the two connecting shafts 24 and through the mounting box 2. A plastic block 22 is fixedly connected to the center of the bottom end of the top block 21. The scraper 31 has water passage holes to facilitate water flow from one side to the other during operation. The top block 21, plastic block 22, and connecting shaft 24 are all made of lightweight materials to allow the float 25 to move them up and down. In addition, a mounting frame is provided at one end of the drainage tank 1 to facilitate its installation near the roof of the building. This solution aims to protect the physical structure but does not protect the circuit and software control. The description of the processing circuit is only to supplement the feasibility and authenticity of this utility model. This utility model does not seek protection for the algorithm and circuit technology. It is worth emphasizing that although the electrical control program is not described in detail in this solution, those skilled in the art can understand and apply it based on their professional knowledge.

[0021] Two sets of springs 35 are symmetrically fixedly connected at the top of the scraper 31 near the center, and the other end of the springs 35 is fixedly connected to the inner wall of the sliding box 3.

[0022] By adopting the above technical solution, two sets of springs 35 are set at the top of the scraper 31 so that the scraper 31 can be closely attached to the inclined filter plate 4 while it is moving.

[0023] A drain pipe 41 is fixedly connected to the bottom of the drain tank 1 and located at the center of the groove 42.

[0024] By adopting the above technical solution, a drain pipe 41 is installed at the bottom of the drain tank 1 to discharge the collected water. The length of the drain pipe 41 needs to be set according to the actual usage requirements (house height).

[0025] A U-shaped shaft 34 is slidably inserted at one end of the drainage box 1 near the top corner, and one end of the U-shaped shaft 34 is fixedly connected to the sliding box 3.

[0026] By adopting the above technical solution, a U-shaped shaft 34 is set at one end of the drainage tank 1 to facilitate the horizontal movement of the scraper 31 driven by the waterproof electric actuator 33.

[0027] A protective sleeve 32 is installed on the side of the drainage tank 1 near the top corner.

[0028] By adopting the above technical solution, the protective cylinder 32 is used to protect the waterproof electric actuator 33, preventing large bodies of water or other impurities from damaging the waterproof electric actuator 33.

[0029] A waterproof electric actuator 33 is installed inside the protective cylinder 32. The output end of the waterproof electric actuator 33 passes through the protective cylinder 32 and is fixedly connected to the U-shaped shaft 34.

[0030] By adopting the above technical solution, the working waterproof electric actuator 33 is activated, thereby causing the fixedly connected U-shaped shaft 34 to move horizontally.

[0031] Reflective stickers 23 are symmetrically placed at the center of both ends of the plastic block 22.

[0032] By adopting the above technical solution, reflective stickers 23 are set on both sides of the plastic block 22 so that the user can notice it in time after the plastic block 22 is raised and lowered from the mounting box 2.

[0033] Working principle: When using this device, the drainage box 1 of this device needs to be installed in the required position (using the installation frame). When there is rainwater on the roof, the water will flow into the drainage box 1, and the impurities in the water will be filtered on the inclined filter plate 4, thereby achieving the filtration effect of the water and preventing large impurities in the water from clogging the drainage pipe 41. The filtered water finally flows into the ground through the drainage pipe 41, completing the roof drainage work.

[0034] In addition, the waterproof electric actuator 33 can be used intermittently during use (it can be used in both directions to achieve the reciprocating movement of the U-shaped shaft 34). This allows the waterproof electric actuator 33 to drive the U-shaped shaft 34 to move horizontally, thereby causing the fixedly connected sliding box 3 to drive the scraper 31 to move (a spring 35 is provided to ensure that the scraper 31 is always in contact with the inclined filter plate 4). This scrapes the impurities on the inclined filter plate 4 to the bottom of the drainage tank 1, thereby increasing the service life of the inclined filter plate 4 and the entire device. When a large amount of impurities accumulate in the drainage tank 1, the water level in the drainage tank 1 will gradually rise, causing the float 25 to drive the top block 21 to rise, thereby exposing the reflective sticker 23 on the plastic block 22, so that the user can promptly check and clean the impurities inside the drainage tank 1 (when it rains, the user can intermittently check the drainage tank 1 from the ground, and the frequency of checking can be determined according to the cleaning time).

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A building roof drainage device, comprising a drainage tank (1), characterized in that: The drainage tank (1) has a groove (42) at the bottom near the center. An inclined filter plate (4) is fixedly connected to the bottom of the drainage tank (1) near the groove (42). A sliding box (3) is slidably connected between the side walls of the drainage tank (1) and above the inclined filter plate (4). A scraper (31) is slidably inserted at the bottom of the sliding box (3) and the scraper (31) is in contact with the inclined filter plate (4). A mounting box (2) is fixedly connected to the top of the drainage tank (1) and near the center of the other side. A connecting shaft (24) is symmetrically slidably inserted inside the mounting box (2) near the center. A float plate (25) is fixedly connected between the bottom ends of the two connecting shafts (24) and through the mounting box (2). A top block (21) is fixedly connected between the top ends of the two connecting shafts (24) and through the mounting box (2). A plastic block (22) is fixedly connected at the center of the bottom end of the top block (21).

2. A building roof drainage device as described in claim 1, characterized in that, Two sets of springs (35) are symmetrically fixedly connected at the top of the scraper (31) near the center, and the other end of the springs (35) is fixedly connected to the inner wall of the sliding box (3).

3. A building roof drainage device as described in claim 1, characterized in that, A drain pipe (41) is fixedly connected to the bottom of the drain tank (1) and at the center of the groove (42).

4. A building roof drainage device as described in claim 1, characterized in that, A U-shaped shaft (34) is slidably inserted at one end of the drainage box (1) and near the top corner, and one end of the U-shaped shaft (34) is fixedly connected to the sliding box (3).

5. A building roof drainage device as described in claim 1, characterized in that, A protective sleeve (32) is provided on the side of the drainage tank (1) near the top corner.

6. A building roof drainage device as described in claim 5, characterized in that, The protective cylinder (32) is equipped with a waterproof electric actuator (33), and the output end of the waterproof electric actuator (33) passes through the protective cylinder (32) and is fixedly connected to the U-shaped shaft (34).

7. A building roof drainage device as described in claim 1, characterized in that, Reflective stickers (23) are symmetrically arranged at the center of both ends of the plastic block (22).