Building anti-blocking rainwater drainage device
By introducing a drive component and scraper structure into the rainwater drainage device, the problem of drainage pipe blockage is solved, enabling smooth rainwater discharge and a long service life for the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEILONGJIANG SHENGRUNFU ENGINEERING MANAGEMENT CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-01
AI Technical Summary
Existing rainwater drainage pipes often become clogged, preventing rainwater from draining smoothly and causing siltation.
A building anti-clogging rainwater drainage device was designed, which uses a drive component to drive a rotating column, a fixed plate and a scraper to rotate. The scraper makes close contact with the filter screen to remove impurities and prevent clogging.
It effectively prevents drainage pipe blockage, ensures smooth rainwater drainage, and extends the service life of the device.
Smart Images

Figure CN224186887U_ABST
Abstract
Description
A building anti-clogging rainwater drainage device Technical Field
[0001] This utility model relates to the field of drainage device technology, specifically a building anti-clogging rainwater drainage device. Background Technology
[0002] Rainwater drainage systems are systems used to collect, transport, and discharge rainwater from the surface of buildings or sites. Their core functions are to prevent water accumulation, protect structural safety, and avoid environmental damage. They are installed on the edge of roofs or in low-lying areas and collect rainwater through gravity or siphon principles.
[0003] However, existing rainwater drainage pipes often become clogged, preventing rainwater from draining smoothly and causing rainwater accumulation. To address this problem, a building anti-clogging rainwater drainage device is provided. Summary of the Invention
[0004] The purpose of this utility model is to provide a building anti-clogging rainwater drainage device to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a building anti-clogging rainwater drainage device, including a drain pipe, a filter screen at the input end of the drain pipe, a support at the input end of the drain pipe, a rotating column rotatably connected to the middle of the support via a bearing, a fixing plate at the left end of the rotating column, an elastic component at the left end of the fixing plate, a scraper at the left end of the elastic component, the scraper being tightly fitted with the filter screen, and a driving component at the top end of the drain pipe, the driving component being fixedly sleeved on the outer wall of the rotating column.
[0005] Preferably, the drive assembly includes a mounting bracket, a motor, and a transmission assembly. The mounting bracket is disposed at the top of the drain pipe, the motor is disposed on the mounting bracket, and the transmission assembly is fixedly sleeved on the outer wall of the rotating column and the output end of the motor.
[0006] Preferably, the transmission assembly includes a driving pulley, a driven pulley, and a belt. The driving pulley is fixedly sleeved on the output end of the motor, the driven pulley is fixedly sleeved on the outer wall of the rotating column, and the belt is sleeved on the outer walls of the driving pulley and the driven pulley.
[0007] Preferably, the elastic component includes a telescopic cylinder, a telescopic rod, a spring, and a connecting assembly. The telescopic cylinder is disposed on the left side of the fixed plate. The telescopic rod is slidably inserted into the inner cavity of the telescopic cylinder and fixedly connected to the scraper. The spring is sleeved on the outside of the telescopic rod and the telescopic cylinder. The two ends of the spring are fixedly connected to the scraper and the fixed plate, respectively. The connecting assembly is disposed in the inner cavity of the telescopic cylinder and fixedly connected to the outer wall of the telescopic rod.
[0008] Preferably, the connecting assembly includes a connecting groove and a connecting block. The connecting groove is formed on the inner wall of the telescopic cylinder, and the connecting block is slidably embedded in the inner cavity of the connecting groove and fixedly connected to the outer wall of the telescopic rod.
[0009] Preferably, the inner cavity of the connecting groove and the outer wall of the connecting block are adapted to each other and are both dovetail-shaped.
[0010] Preferably, the bracket is a stainless steel bracket.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. Start the motor to drive the drive pulley to rotate. Under the transmission of the belt, the driven pulley drives the rotating column, fixed plate, telescopic rod, telescopic cylinder and scraper to rotate. The scraper can then scrape off the impurities on the filter screen, preventing the drain pipe from getting blocked. This solves the problem of rainwater drain pipes in the existing technology often getting blocked, which prevents rainwater from draining smoothly and causes rainwater to accumulate.
[0013] 2. Under the elastic force of the spring, the scraper is always subjected to a force in the direction of the filter screen. When the scraper wears, it can move towards the filter screen under the limiting action of the telescopic rod and telescopic cylinder, so that it always maintains close contact with the filter screen. Attached Figure Description
[0014] Figure 1 is a three-dimensional structural diagram of this utility model;
[0015] Figure 2 is a front sectional view of the telescopic cylinder of this utility model;
[0016] Figure 3 is an enlarged view of section A in Figure 1 of this utility model;
[0017] Figure 4 is a top sectional view of the telescopic cylinder of this utility model.
[0018] In the diagram: 1. Drain pipe; 2. Bracket; 3. Rotating column; 4. Fixing plate; 5. Scraper; 6. Telescopic cylinder; 7. Telescopic rod; 8. Connecting groove; 9. Connecting block; 10. Spring; 11. Mounting bracket; 12. Motor; 13. Drive pulley; 14. Driven pulley; 15. Belt. 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0020] Please refer to Figures 1 to 4. This utility model provides a technical solution: a building anti-clogging rainwater drainage device, including a drainage pipe 1, a filter screen at the input end of the drainage pipe 1, a support 2 at the input end of the drainage pipe 1, a rotating column 3 rotatably connected to the middle of the support 2 via a bearing, a fixing plate 4 at the left end of the rotating column 3, an elastic component at the left end of the fixing plate 4, and a scraper 5 at the left end of the elastic component. The scraper 5 is tightly fitted with the filter screen, and a driving component is provided at the top of the drainage pipe 1. The driving component is fixedly sleeved on the outer wall of the rotating column 3. The driving component drives the rotating column 3, the fixing plate 4, the elastic component, and the scraper 5 to rotate, thereby enabling the scraper 5 to scrape off impurities on the filter screen, preventing the drainage pipe 1 from becoming clogged. This solves the problem that the rainwater drainage pipe 1 of the prior art often becomes clogged, resulting in rainwater not being able to drain smoothly and causing rainwater accumulation. Under the action of the elastic component, the scraper 5 can always maintain close contact with the filter screen after wear.
[0021] In this embodiment, the drive assembly includes a mounting frame 11, a motor 12, and a transmission assembly. The mounting frame 11 is located at the top of the drain pipe 1, and the motor 12 is mounted on the mounting frame 11. The transmission assembly is fixedly sleeved on the outer wall of the rotating column 3 and the output end of the motor 12, so that the motor 12 drives the drive pulley 13 to rotate. Then, under the transmission action of the belt 15, the driven pulley 14 can drive the rotating column 3, the fixed plate 4, the telescopic rod 7, the telescopic cylinder 6, and the scraper 5 to rotate. This allows the scraper 5 to scrape away impurities on the filter screen, preventing the drain pipe 1 from becoming blocked. This solves the problem that the rainwater drain pipe 1 of the prior art often becomes blocked, resulting in rainwater not being able to drain smoothly and causing rainwater accumulation.
[0022] In this embodiment, the transmission assembly includes a drive pulley 13, a driven pulley 14, and a belt 15. The drive pulley 13 is fixedly sleeved on the output end of the motor 12, the driven pulley 14 is fixedly sleeved on the outer wall of the rotating column 3, and the belt 15 is sleeved on the outer walls of the drive pulley 13 and the driven pulley 14. Under the transmission action of the belt 15, when the motor 12 drives the drive pulley 13 to rotate, it can drive the driven pulley 14 to drive the rotating column 3 to rotate.
[0023] In this embodiment, the elastic component includes a telescopic cylinder 6, a telescopic rod 7, a spring 10, and a connecting component. The telescopic cylinder 6 is disposed on the left side of the fixed plate 4. The telescopic rod 7 is slidably inserted into the inner cavity of the telescopic cylinder 6 and fixedly connected to the scraper 5. The spring 10 is sleeved on the outside of the telescopic rod 7 and the telescopic cylinder 6. The two ends of the spring 10 are fixedly connected to the scraper 5 and the fixed plate 4, respectively. The connecting component is disposed in the inner cavity of the telescopic cylinder 6 and fixedly connected to the outer wall of the telescopic rod 7. Under the elastic force of the spring 10, the scraper 5 can always be subjected to a force in the direction of the filter screen. When the scraper 5 wears, it can move towards the filter screen under the limiting action of the telescopic rod 7 and the telescopic cylinder 6, so that it always maintains close contact with the filter screen.
[0024] In this embodiment, the connecting component includes a connecting groove 8 and a connecting block 9. The connecting groove 8 is formed on the inner wall of the telescopic cylinder 6. The connecting block 9 is slidably embedded in the inner cavity of the connecting groove 8 and fixedly connected to the outer wall of the telescopic rod 7. Under the combined action of the connecting block 9 and the connecting groove 8, one end of the telescopic rod 7 can always be inserted into the inner cavity of the telescopic cylinder 6, which improves the stability of the elastic component during use.
[0025] In this embodiment, the inner cavity of the connecting groove 8 and the outer wall of the connecting block 9 are adapted to each other and are both dovetail-shaped, which can keep one end of the connecting block 9 embedded in the inner cavity of the connecting groove 8, thus improving the stability of the connecting assembly during use.
[0026] In this embodiment, the bracket 2 is a stainless steel bracket 2, which can prevent the bracket 2 from rusting and improve the service life of the bracket 2.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A building anti-clogging rainwater drainage device, comprising a drain pipe (1), characterized in that: The drain pipe (1) is provided with a filter screen at its input end and a bracket (2) at its input end. A rotating column (3) is rotatably connected to the middle of the bracket (2) via a bearing. A fixing plate (4) is provided at the left end of the rotating column (3). An elastic component is provided at the left end of the fixing plate (4). A scraper (5) is provided at the left end of the elastic component. The scraper (5) is tightly fitted to the filter screen. A driving component is provided at the top end of the drain pipe (1). The driving component is fixedly sleeved on the outer wall of the rotating column (3).
2. The building anti-clogging rainwater drainage device according to claim 1, characterized in that: The drive assembly includes a mounting bracket (11), a motor (12), and a transmission assembly. The mounting bracket (11) is located at the top of the drain pipe (1), the motor (12) is located on the mounting bracket (11), and the transmission assembly is fixedly sleeved on the outer wall of the rotating column (3) and the output end of the motor (12).
3. A clog resistant rainwater drainage device for buildings according to claim 2, wherein: The transmission assembly includes a drive pulley (13), a driven pulley (14), and a belt (15). The drive pulley (13) is fixedly sleeved on the output end of the motor (12), the driven pulley (14) is fixedly sleeved on the outer wall of the rotating column (3), and the belt (15) is sleeved on the outer walls of the drive pulley (13) and the driven pulley (14).
4. The clog-resistant rainwater drainage device for buildings according to claim 1, characterized in that: The elastic component includes a telescopic cylinder (6), a telescopic rod (7), a spring (10), and a connecting component. The telescopic cylinder (6) is located on the left side of the fixed plate (4). The telescopic rod (7) is slidably inserted into the inner cavity of the telescopic cylinder (6) and fixedly connected to the scraper (5). The spring (10) is sleeved on the outside of the telescopic rod (7) and the telescopic cylinder (6). The two ends of the spring (10) are fixedly connected to the scraper (5) and the fixed plate (4) respectively. The connecting component is located in the inner cavity of the telescopic cylinder (6) and fixedly connected to the outer wall of the telescopic rod (7).
5. A clog resistant rainwater drainage device for a building according to claim 4 wherein: The connecting assembly includes a connecting groove (8) and a connecting block (9). The connecting groove (8) is opened on the inner wall of the telescopic cylinder (6), and the connecting block (9) is slidably embedded in the inner cavity of the connecting groove (8) and fixedly connected to the outer wall of the telescopic rod (7).
6. A building anti-clogging rainwater drainage device according to claim 5, characterized in that: The inner cavity of the connecting groove (8) fits well with the outer wall of the connecting block (9) and both are dovetail-shaped.
7. A building anti-clogging rainwater drainage device according to claim 1, characterized in that: The bracket (2) is a stainless steel bracket (2).