Rainwater pipeline silt settling device
By installing a silt-blocking mechanism and an inclined outlet pipe in the sedimentation well of the rainwater pipe, the problem of insufficient interception of fine particles of sediment by traditional sedimentation wells is solved, achieving efficient interception of sediment and protecting the water quality of the river and the rainwater discharge capacity.
Patent Information
- Application Number
- CN202520206024.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-10
AI Technical Summary
Traditional sedimentation wells are not capable of retaining fine particles of sediment, which are carried by rainwater, causing river pollution and siltation, affecting rainwater drainage efficiency, and even blocking outlets, threatening the city's flood control and drainage capabilities.
A sedimentation device for rainwater pipes is designed. By setting a mud-blocking mechanism in the sedimentation well, the mud-blocking mechanism is located directly opposite the water inlet pipe and higher than the side of the water inlet pipe near the inner wall. Combined with the inclined water outlet pipe and the bottom landing area, the device can achieve efficient interception of sediment.
It significantly reduces the amount of sediment entering the river, protects the water quality, slows down siltation, prevents sediment from clogging the outlet, and ensures the drainage capacity of the rainwater pipes.
Smart Images

Figure CN223867388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rainwater pipe sedimentation device, belonging to the field of rainwater sedimentation technology. Background Technology
[0002] In urban stormwater drainage systems, stormwater pipes play a crucial role in collecting and transporting rainwater, which is essential for maintaining urban flood control and drainage functions. However, as rainwater flows through urban surfaces, it often carries large amounts of silt, impurities, and other pollutants. Especially during urbanization, due to road paving and frequent construction activities, the silt content in rainwater has increased significantly, particularly in rainwater collected through urban road stormwater pipes.
[0003] In traditional rainwater treatment systems, sedimentation wells, as a basic sediment interception device, are widely used. The initial design principle of sedimentation wells is to use gravity settling to deposit heavier sediment particles in rainwater at the bottom, thereby purifying the rainwater. However, in actual operation, the sediment interception efficiency of traditional sedimentation wells is limited, especially in their insufficient capacity to retain fine sediment particles. This results in a large amount of sediment continuing to flow with the rainwater and eventually being washed into rivers. This situation not only exacerbates river pollution and affects the ecological balance of aquatic bodies but also causes siltation in river channels. In severe cases, it can even block the outlets of rainwater pipes, seriously affecting rainwater discharge efficiency and reducing urban flood control and drainage capacity. Especially during the rainy season, poor drainage caused by blocked outlets can lead to urban flooding, posing a serious threat to residents' lives and property.
[0004] In view of the above problems, there is an urgent need for an efficient and reliable rainwater pipe sedimentation device to significantly improve sediment interception efficiency, prevent sediment from accumulating at the outlet, effectively reduce the amount of sediment entering the river, thereby protecting the river water quality, slowing down the rate of river siltation, and ensuring the smooth operation of the rainwater pipe system. Utility Model Content
[0005] To address the aforementioned problems, this invention provides a rainwater pipe sedimentation device. Through optimized structural design, this invention achieves efficient interception of large amounts of sediment in rainwater, preventing its accumulation at the outlet and providing a more effective solution for urban rainwater management.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A rainwater pipe sedimentation device includes a sedimentation well with a hollow interior. One side of the sedimentation well has an inlet pipe communicating with its interior, and the other side has an outlet pipe communicating with its interior. A mud-blocking mechanism is fixedly connected inside the sedimentation well, positioned between the inlet pipe and the outlet pipe, and directly opposite the inlet pipe. The mud-blocking mechanism is higher than the inlet pipe and closer to the inner wall of the sedimentation well.
[0008] In one embodiment of this utility model, a step is provided at the bottom of the sedimentation well, and a bottoming area is formed on one side of the step. The mud-blocking mechanism is fixedly connected to the top of the step.
[0009] In one embodiment of this utility model, the water inlet pipe is located above one side of the bottoming area, and the water outlet pipe is located on the side of the mud-blocking mechanism away from the bottoming area.
[0010] In one embodiment of this utility model, the cross-sectional area of the mud-blocking mechanism is larger than the cross-sectional area of the water inlet pipe.
[0011] In one embodiment of this utility model, the mud-blocking mechanism is higher than the side of the water outlet pipe that is close to the inner wall of the sedimentation well, and the cross-sectional area of the mud-blocking mechanism is larger than the cross-sectional area of the water outlet pipe.
[0012] In one embodiment of this utility model, the top of the sedimentation well is provided with a well cover.
[0013] In one embodiment of this utility model, the sedimentation well is a hollow square columnar structure.
[0014] In one embodiment of this utility model, the water outlet pipe is inclined upwards.
[0015] In one embodiment of this utility model, the mud-blocking mechanism is a mud-blocking wall.
[0016] In one embodiment of this utility model, the mud-blocking mechanism is a fine grid.
[0017] The beneficial effects of this utility model are as follows:
[0018] This utility model provides a rainwater pipe sedimentation device that effectively solves the problem of river pollution and siltation caused by rainwater pipes carrying sediment into rivers. The device features a sediment-blocking mechanism between the inlet and outlet pipes, positioned directly opposite the inlet pipe and higher than the side of the inlet pipe closest to the inner wall of the sedimentation well. This mechanism effectively intercepts sediment within the rainwater pipe, trapping it at the bottom of the sedimentation well. This significantly reduces the amount of sediment entering the river, protecting water quality and mitigating siltation. Simultaneously, it prevents sediment buildup at the outlet, ensuring the rainwater pipe's drainage capacity and preventing blockage. Attached Figure Description
[0019] Figure 1 This is a top view of a rainwater pipe sedimentation device provided by this utility model.
[0020] Figure 2 yes Figure 1 AA cross-sectional view of the sedimentation device for rainwater pipes.
[0021] In the diagram: 1. Sedimentation well; 2. Mud-blocking mechanism; 3. Inlet pipe; 4. Outlet pipe. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] Please see Figure 1 and Figure 2 As shown, a rainwater pipe sedimentation device includes a sedimentation well 1. The sedimentation well 1 has a hollow interior. One side of the sedimentation well 1 is provided with an inlet pipe 3 that communicates with its interior, and the other side is provided with an outlet pipe 4 that communicates with its interior. A mud-blocking mechanism 2 is fixedly connected inside the sedimentation well 1. The mud-blocking mechanism 2 is located between the inlet pipe 3 and the outlet pipe 4, and is located in the direction directly opposite to the inlet pipe 3. The mud-blocking mechanism 2 is higher than the side of the inlet pipe 3 that is close to the inner wall of the sedimentation well 1.
[0026] In some embodiments, a step is provided at the bottom of the sedimentation well 1, and a bottoming area is formed on one side of the step. The mud-blocking mechanism 2 is fixedly connected to the top of the step.
[0027] In some embodiments, the inlet pipe 3 is located above one side of the bottoming area, and the outlet pipe 4 is located on the side of the mud-blocking mechanism 2 away from the bottoming area.
[0028] In some embodiments, the cross-sectional area of the mud-blocking mechanism 2 is larger than the cross-sectional area of the water inlet pipe 3. This arrangement enables the mud-blocking mechanism 2 to effectively intercept mud and sand in the rainwater pipe.
[0029] In some embodiments, the mud-blocking mechanism 2 is higher than the side of the outlet pipe 4 that is close to the inner wall of the sedimentation well 1, and the cross-sectional area of the mud-blocking mechanism 2 is larger than the cross-sectional area of the outlet pipe 4.
[0030] In some embodiments, the sedimentation well 1 is provided with a well cover on top of it.
[0031] In some embodiments, the sedimentation well 1 is a hollow square columnar structure.
[0032] In some embodiments, the water outlet pipe 4 is inclined upwards.
[0033] In this embodiment, while ensuring the drainage capacity of the pipeline, the outlet pipe 4 is set at an upward angle, so that the outlet pipe 4 is laid against the slope. As a result, after the sediment in the outlet pipe 4 is deposited, it can move downward at an angle due to gravity, and thus enter the bottom area of the sedimentation well 1.
[0034] The mud-blocking mechanism 2 should have an appropriate distance from the inner wall of the sedimentation wells 1 on both sides. The distance can be half the diameter of the outlet pipe 4, but should not be less than 200mm.
[0035] In some embodiments, the mud-blocking mechanism 2 is a mud-blocking wall.
[0036] In this embodiment, a mud-blocking wall is used as the mud-blocking mechanism 2. The water entering through the water inlet pipe 3 impacts the mud-blocking wall, and the water flow dissipates energy, allowing the mud and sand to be deposited in the bottom area.
[0037] In some embodiments, the mud-blocking mechanism 2 is a fine grid.
[0038] In this embodiment, a fine grid is used as the mud-blocking mechanism 2, which can reduce the impact on the flow capacity of the sedimentation well 1 while intercepting mud and sand.
[0039] In summary, the rainwater pipe sedimentation device provided by this utility model can effectively solve the problem of river pollution and siltation caused by rainwater pipes carrying sediment into the river. This rainwater pipe sedimentation device has a sediment-blocking mechanism installed between the inlet pipe and the outlet pipe, with the mechanism located directly opposite the inlet pipe and higher than the side of the inlet pipe closest to the inner wall of the sedimentation well. This mechanism effectively intercepts sediment in the rainwater pipe, trapping it at the bottom of the sedimentation well, significantly reducing the amount of sediment entering the river, protecting river water quality, and slowing down river siltation. Simultaneously, it prevents sediment from accumulating at the outlet, preventing clogging of the rainwater outlet and ensuring the drainage capacity of the rainwater pipe.
[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0041] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
[0042] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A sludge settling device for rainwater pipes, characterized in that, Includes a sedimentation well (1), the interior of which is a hollow structure. A water inlet pipe (3) is provided on one side of the sedimentation well (1) to connect to its interior, and a water outlet pipe (4) is provided on the other side to connect to its interior. A mud-blocking mechanism (2) is fixedly connected inside the sedimentation well (1). The mud-blocking mechanism (2) is located between the water inlet pipe (3) and the water outlet pipe (4) and is located in the direction directly opposite to the water inlet pipe (3). The mud-blocking mechanism (2) is higher than the water inlet pipe (3) and closer to the inner wall of the sedimentation well (1).
2. The rainwater pipe sedimentation device according to claim 1, characterized in that, The bottom of the sedimentation well (1) is provided with a step, and a bottoming area is formed on one side of the step. The mud-blocking mechanism (2) is fixedly connected to the top of the step.
3. The rainwater pipe sedimentation device according to claim 2, characterized in that, The inlet pipe (3) is located above one side of the bottoming area, and the outlet pipe (4) is located on the side of the mud-blocking mechanism (2) away from the bottoming area.
4. The rainwater pipe sedimentation device according to claim 1, characterized in that, The cross-sectional area of the mud-blocking mechanism (2) is larger than the cross-sectional area of the water inlet pipe (3).
5. The rainwater pipe sedimentation device according to claim 1, characterized in that, The mud-blocking mechanism (2) is higher than the side of the outlet pipe (4) that is close to the inner wall of the sedimentation well (1), and the cross-sectional area of the mud-blocking mechanism (2) is larger than the cross-sectional area of the outlet pipe (4).
6. The rainwater pipe sedimentation device according to claim 1, characterized in that, The sedimentation well (1) is topped with a well cover.
7. The rainwater pipe sedimentation device according to claim 1, characterized in that, The sedimentation well (1) is a hollow square columnar structure.
8. The rainwater pipe sedimentation device according to claim 1, characterized in that, The water outlet pipe (4) is set at an angle upwards.
9. The rainwater pipe sedimentation device according to any one of claims 1-8, characterized in that, The mud-blocking mechanism (2) is a mud-blocking wall.
10. The rainwater pipe sedimentation device according to any one of claims 1-8, characterized in that, The mud-blocking mechanism (2) is a fine grid.