Drainage pipe for urban rainwater collection

Abstract

The utility model discloses a kind of urban rainwater collection drainage pipelines, including water-collecting well, grate is connected with the top of water-collecting well, filter box is connected with the just below grate in water-collecting well, the top of filter box is provided with opening, and multiple filter holes are opened in the side wall of filter box;The bottom of water-collecting well is respectively horizontally communicated with water distribution pipe and vertically communicated with seepage pipe, water distribution pipe is communicated with municipal pipeline, seepage pipe is inserted to the depth of base soil layer, and the height from the highest point of seepage pipe to the bottom of water-collecting well is higher than two-thirds height of water distribution pipe. By setting grate to form double-layer filter by collocating filter box to effectively reduce the risk of larger sundries and garbage to block pipeline, when needing maintenance, only filter box can be taken out and filter box is cleaned, when rain is more, drainage pressure is big, water level in water-collecting well rises until seepage pipe is not covered, and seepage pipe will assist drainage to subsoil layer deep place under seepage pipe.

Description

Technical Field

[0001] This utility model relates to the field of rainwater harvesting and drainage technology, and in particular to a drainage pipe for urban rainwater harvesting. Background Technology

[0002] Urban roads, as a crucial component of urban infrastructure, are typically used for various purposes such as transportation and commercial activities. However, heavy rains often lead to flooding on urban roads, causing inconvenience to residents' travel and daily lives. This situation can severely impact the normal operation of a city; therefore, improving the drainage efficiency of urban roads is essential to ensuring the safety of urban traffic and residents' lives.

[0003] Stormwater drainage pipes are an important component of urban drainage systems, primarily used to collect and discharge rainwater to ensure smooth drainage during the rainy season and prevent problems such as flooding.

[0004] Existing technology, such as the municipal engineering drainage structure disclosed in patent document CN202420290395.2, relates to the field of municipal engineering technology. It includes an outer frame and a drainage and sewage removal mechanism. The key feature is that the drainage and sewage removal mechanism inside and at the top of the outer frame effectively filters and removes residual mud or debris from rainwater. After rainwater or liquid is discharged into the outer casing through the drainage holes, the first screening plate initially separates larger debris, and then the second screening plate separates finer debris. Through this two-stage screening, mud or debris mixed in with the liquid can be effectively separated. When the debris falls onto the first and second screening plates, a motor drives a rotating shaft and a ball screw to rotate, causing a scraper to move laterally on the first and second screening plates, allowing the debris or mud to fall into the collection tank through the sewage outlet. This functional design effectively prevents mud or debris from accumulating in the sewer pipes.

[0005] However, the above solution still has drawbacks. First, if an electric motor is used, the production and maintenance costs will be high. Second, water will remain inside the sludge collection box, making it difficult to clean. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a drainage pipe for urban rainwater harvesting, which can effectively reduce the risk of large debris and garbage clogging the pipe, while also effectively reducing maintenance costs.

[0007] According to a first aspect of the present invention, a drainage pipe for urban rainwater collection includes a collection well, a grate connected to the top of the collection well, a filter box connected directly below the grate in the collection well, an opening at the top of the filter box, and multiple filter holes on the side wall of the filter box; a distribution pipe is horizontally connected to the bottom of the collection well and a seepage pipe is vertically connected to the bottom of the collection well, the distribution pipe is connected to a municipal pipeline, and the seepage pipe is inserted deep into the foundation soil layer, the height of the highest point of the seepage pipe from the bottom of the collection well is higher than two-thirds of the height of the distribution pipe.

[0008] The urban rainwater collection drainage pipe according to the present utility model embodiment has at least the following beneficial effects: by setting up a grate and a filter box to form a double-layer filtration, the risk of large debris and garbage clogging the pipe is effectively reduced. When maintenance is required, the filter box can be removed and cleaned. When there is a lot of rainwater and the drainage pressure is high, the water level in the collection well rises until it exceeds the seepage pipe. The seepage pipe will assist in drainage to allow the water exceeding the seepage pipe to seep into the depth of the foundation soil layer.

[0009] According to some embodiments of this utility model, the seepage pipe is vertically arranged, and the portion of the seepage pipe exposed in the water collection well has a variable diameter structure that gradually decreases from top to bottom.

[0010] According to some embodiments of the present invention, the top of the water collection well has a flow guide seat, the upper surface of the flow guide seat is funnel-shaped and the center of the flow guide seat has a through hole, and the grate is connected to the flow guide seat.

[0011] According to some embodiments of the present invention, a step is formed on the inner side wall of the water collection well near the top, extending toward the central axis of the water collection well, and the flow guide seat is connected to the step.

[0012] According to some embodiments of the present invention, an annular support plate is connected to the step, and the flow guide seat is connected to the annular support plate.

[0013] According to some embodiments of the present invention, a lateral support is connected to the bottom of the annular receiving plate. The cross-sectional shape of the lateral support is a right triangle, and a water collection ring is inclinedly connected to the hypotenuse of the lateral support toward the central axis of the water collection well.

[0014] According to some embodiments of the present invention, the bottom surface of the filter box is a square structure, and each side wall of the filter box near the top is provided with a through hook groove, and the maximum outer diameter of the filter box is smaller than the inner diameter of the step.

[0015] According to some embodiments of the present invention, a support is connected to the bottom of the water collection well, and the filter box is connected to the support.

[0016] According to some embodiments of the present invention, the portion of the seepage pipe exposed in the water collection well is covered with a water-absorbing cover, the bottom of the water-absorbing cover is connected to the bottom of the water collection well, and a plurality of water inlet holes are spaced apart on the outer periphery of the water-absorbing cover near the bottom.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a drainage pipe for urban rainwater collection according to an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure of a drainage pipe for urban rainwater collection according to another embodiment of the present invention.

[0020] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0021] 1000, Water collection well; 1100, Step; 1200, Annular support plate; 1210, Lateral support; 1220, Water collection ring; 1300, Support; 2000, Grate; 3000, Filter box; 3100, Filter hole; 3200, Hook groove; 4100, Water distribution pipe; 4200, Water seepage pipe; 4210, Water suction cover; 4211, Water inlet; 5000, Flow guide seat; 5100, Through hole. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] refer to Figure 1 As shown, the urban rainwater collection drainage pipe according to an embodiment of the present invention includes a collection well 1000, a grate 2000 connected to the top of the collection well 1000, a filter box 3000 connected directly below the grate 2000 in the collection well 1000, an opening provided at the top of the filter box 3000, and multiple filter holes 3100 provided on the side wall of the filter box 3000; a water distribution pipe 4100 is horizontally connected to the bottom of the collection well 1000 and a seepage pipe 4200 is vertically connected to it, the water distribution pipe 4100 is connected to the municipal pipeline, and the seepage pipe 4200 is inserted deep into the foundation soil layer, the height of the highest point of the seepage pipe 4200 to the bottom of the collection well 1000 is higher than two-thirds of the height of the water distribution pipe 4100.

[0027] In actual use, the grate 2000 serves as a primary filter, intercepting large debris such as leaves and plastic bottles; the filter box 3000 serves as the core filter unit, with its densely packed filter holes 3100 effectively blocking particles such as mud and gravel, ensuring that the water entering the drainage system is relatively clean and greatly reducing the risk of pipe blockage. When maintenance is required, the filter box 3000 can simply be removed and cleaned. When there is a lot of rain and the drainage pressure is high, the water level in the collection well 1000 rises until it exceeds the seepage pipe 4200. The seepage pipe 4200 will then assist in drainage, allowing the water exceeding the seepage pipe 4200 to seep into the depths of the foundation soil.

[0028] In some specific embodiments of this utility model, it may also have the following additional technical features: the top of the water collection well 1000 has a guide seat 5000, the upper surface of the guide seat 5000 is funnel-shaped and the center of the guide seat 5000 has a through hole 5100, and the grate 2000 is connected to the guide seat 5000. The funnel-shaped upper surface design of the guide seat 5000 can efficiently guide the rainwater collected in the well opening area to the through hole 5100 in the center, accelerate the rainwater inflow speed, and effectively reduce the splashing and retention of rainwater at the edge of the well opening.

[0029] In some specific embodiments of this utility model, it may also have the following additional technical features: the projection area of ​​the minimum diameter of the through hole 5100 of the guide seat 5000 onto the bottom surface of the collection well 1000 is completely located within the projection area of ​​the filter box 3000 onto the bottom surface of the collection well 1000. Through this design, it is ensured that all rainwater flowing in from the guide seat 5000 accurately falls into the opening of the filter box 3000 below, preventing rainwater from directly scouring the inner wall of the collection well 1000 or bypassing the filter box 3000, thus maximizing the filtration capacity of the filter box 3000. This not only improves filtration efficiency but also reduces the long-term scouring and erosion of the concrete inner wall of the collection well 1000 by water flow, while preventing unfiltered debris from accumulating in dead corners at the bottom of the well, reducing the difficulty of maintenance and cleaning.

[0030] In some specific embodiments of this utility model, it may also have the following additional technical features: a step 1100 is formed on the inner sidewall of the water collection well 1000 near the top, extending toward the central axis of the water collection well 1000, and the flow guide seat 5000 is connected to the step 1100. The step 1100 provides a stable and flat installation reference surface for the flow guide seat 5000, simplifies the centering and leveling operations during construction, and ensures the uniformity of the force on the flow guide seat 5000.

[0031] In some specific embodiments of this utility model, it may also have the following additional technical features: an annular support plate 1200 is connected to the step 1100, and the flow guide seat 5000 is connected to the annular support plate 1200. The annular support plate 1200, as a transitional component, primarily serves to accommodate flow guide seats 5000 of different specifications, improving the modularity and versatility of the entire wellhead system. Furthermore, it also distributes the load transmitted by the flow guide seat 5000 more evenly onto the step 1100 below.

[0032] In some specific embodiments of this utility model, it may also have the following additional technical features: the inner diameter of the annular receiving plate 1200 is larger than the minimum diameter of the through hole 5100 of the guide seat 5000. This size design ensures that the annular receiving plate 1200 will never interfere with the downward flow path of rainwater, ensuring unobstructed water flow. At the same time, in order to significantly enhance the structural stability of the annular receiving plate 1200 under long-term dynamic loads (such as vehicle crushing impact), a lateral support 1210 is connected to the bottom of the annular receiving plate 1200. Preferably, the cross-sectional shape of the lateral support 1210 is a right-angled triangle. Specifically, one right-angled side is fixedly connected to the bottom surface of the annular receiving plate 1200, and the other right-angled side is tightly abutted against the inner sidewall of the step 1100; more specifically, a water collecting ring 1220 is inclined downwards and connected to the inclined side of the lateral support 1210 towards the central axis of the water collecting well 1000. This design utilizes the stability principle of triangles to effectively transfer and disperse the vertical pressure and horizontal force that the annular support plate 1200 may bear to the robust well wall, greatly improving the rigidity and durability of the wellhead support system. At the same time, due to the presence of the water collection ring 1220, when the water flow velocity is low, due to the existence of surface tension, the water flows down along the bottom edge of the guide seat 5000, passing through the annular support plate 1200 and the inclined side of the side support 1210, and finally converges at the end of the water collection ring 1220 that is farther from the side support 1210. This end is also the lowest point of the water collection ring 1220, and finally drips down under the action of gravity, instead of flowing to the step 1100 and finally falling down along the well wall.

[0033] Preferably, the lowest point of the water collecting ring 1220 is closer to the central axis of the water collecting well 1000 than the inner wall of the filter box 3000. This constraint ensures that the water droplets collected by the water collecting ring 1220 will eventually drip into the filter box 3000.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: the bottom surface of the filter box 3000 is a square structure, and each side wall of the filter box 3000 near the top is provided with a through hook groove 3200. The maximum outer diameter of the filter box 3000 is smaller than the inner diameter of the step 1100. The design of the bottom surface as a square structure not only makes the filter box 3000 stable and less prone to displacement due to water flow impact, but more importantly, its regular shape facilitates positioning at the bottom of the well, and the manufacturing process is simple, which is conducive to reducing costs and standardizing production; while the hook groove 3200 is a structure designed specifically for maintenance operations. Maintenance personnel can use a hook tool that is compatible with the hook groove 3200 to pass through the top of the water collection well 1000 after the grate 2000, the guide seat 5000 and the annular support plate 1200 have been removed, and accurately hook these hook grooves 3200, thereby safely and labor-savingly lifting the filter box 3000 out of the water collection well 1000. The maximum outer diameter of the filter box 3000 is smaller than the inner diameter of the upper step 1100. This design ensures that the filter box 3000 can pass smoothly through the space under the step 1100 during installation and removal without getting stuck, which greatly facilitates maintenance operations.

[0035] In some specific embodiments of this utility model, it may also have the following additional technical features: a support 1300 is connected to the bottom of the water collection well 1000, and the filter box 3000 is connected to the support 1300. The presence of the support 1300 raises the filter box 3000, reducing the height that the filter box 3000 needs to be lifted, thereby reducing the difficulty of lifting.

[0036] In some specific embodiments of this utility model, it may also have the following additional technical features: the seepage pipe 4200 is vertically arranged, and the portion of the seepage pipe 4200 exposed above the water collection well 1000 has a variable diameter structure that gradually decreases from top to bottom. The seepage pipe with a variable diameter structure can further accelerate drainage and reduce drainage pressure.

[0037] refer to Figure 2 as well as Figure 3As shown, as a further optimization of the above embodiment, the portion of the seepage pipe 4200 exposed above the collection well 1000 is covered with a water-absorbing cover 4210. The bottom of the water-absorbing cover 4210 is connected to the bottom of the collection well 1000, and multiple water inlet holes 4211 are spaced apart on the outer periphery of the water-absorbing cover 4210 near the bottom. The core function of the water-absorbing cover 4210 is to protect the opening of the seepage pipe 4200 and prevent sediment from settling at the bottom of the well from directly flowing in and causing blockage. The design of its lateral water inlet holes 4211 forces the water to enter from a higher position, achieving a good sand-blocking effect. At the same time, under heavy rain conditions, when the water level in the well covers the seepage pipe 4200 and the water-absorbing cover 4210, as the water in the seepage pipe 4200 seeps deeper into the foundation soil layer, a local negative pressure zone will be generated between the inside of the water-absorbing cover 4210 and the inlet of the seepage pipe 4200. This negative pressure effect creates a continuous suction force, accelerating the entry of external rainwater into the hood through the inlet hole 4211 on the side wall of the hood 4210, and quickly draining it into the infiltration pipe 4200. This effect improves the flow rate and efficiency during emergency drainage, providing additional effectiveness in alleviating urban flooding.

[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drainage pipe for urban rainwater harvesting, characterized in that, The system includes a collection well (1000), with a grate (2000) connected to the top of the collection well (1000). A filter box (3000) is connected directly below the grate (2000) in the collection well (1000). The top of the filter box (3000) has an opening, and the side wall of the filter box (3000) has multiple filter holes (3100). The bottom of the collection well (1000) is horizontally connected to a water distribution pipe (4100) and vertically connected to a seepage pipe (4200). The water distribution pipe (4100) is connected to a municipal pipeline, and the seepage pipe (4200) is inserted deep into the foundation soil layer. The height from the highest point of the seepage pipe (4200) to the bottom of the collection well (1000) is higher than two-thirds of the height of the water distribution pipe (4100).

2. The urban rainwater harvesting drainage pipe according to claim 1, characterized in that, The seepage pipe (4200) is vertically arranged, and the portion of the seepage pipe (4200) that protrudes from the water collection well (1000) has a variable diameter structure that gradually decreases from top to bottom.

3. The urban rainwater harvesting drainage pipe according to claim 2, characterized in that, The top of the water collection well (1000) has a flow guide seat (5000), the upper surface of the flow guide seat (5000) is funnel-shaped and the center of the flow guide seat (5000) has a through hole (5100), and the grate (2000) is connected to the flow guide seat (5000).

4. The urban rainwater harvesting drainage pipe according to claim 3, characterized in that, The water collection well (1000) has a step (1100) extending from the central axis of the water collection well (1000) on the inner side wall near the top, and the flow guide seat (5000) is connected to the step (1100).

5. The urban rainwater harvesting drainage pipe according to claim 4, characterized in that, An annular support plate (1200) is connected to the step (1100), and the flow guide (5000) is connected to the annular support plate (1200).

6. The urban rainwater harvesting drainage pipe according to claim 5, characterized in that, The bottom of the annular support plate is connected to a lateral support (1210). The cross-sectional shape of the lateral support (1210) is a right triangle. A water collection ring (1220) is inclined to the hypotenuse of the lateral support (1210) towards the central axis of the water collection well (1000).

7. The urban rainwater harvesting drainage pipe according to claim 6, characterized in that, The inner diameter of the annular receiving plate (1200) is larger than the minimum diameter of the through hole (5100) of the guide seat (5000).

8. The urban rainwater harvesting drainage pipe according to claim 4, characterized in that, The bottom of the filter box (3000) is a square structure. Each side wall of the filter box (3000) near the top is provided with a through hook groove (3200). The maximum outer diameter of the filter box (3000) is smaller than the inner diameter of the step (1100).

9. The urban rainwater harvesting drainage pipe according to claim 8, characterized in that, The bottom of the water collection well (1000) is connected to a support (1300), and the filter box (3000) is connected to the support (1300).

10. The urban rainwater harvesting drainage pipe according to claim 1, characterized in that, The portion of the seepage pipe (4200) that protrudes from the water collection well (1000) is covered with a water-absorbing cover (4210). The bottom of the water-absorbing cover (4210) is connected to the bottom of the water collection well (1000). The water-absorbing cover (4210) has multiple water inlet holes (4211) spaced apart on its outer periphery near the bottom.

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