Rainwater permeation device for sponge city

Abstract

The utility model discloses a rainwater permeation device for a sponge city, and relates to the field of sponge cities. The rainwater quality is remarkably improved through the efficient filtering system, the first water seepage layer and the second water seepage layer conduct collaborative filtering, sundries are effectively intercepted, the blocking risk is reduced, the service life of the device is prolonged, the first water seepage layer made of coarse sand and other materials is not prone to blocking, stable filtering and permeating efficiency is guaranteed, and the service life of the device is prolonged. Meanwhile, the good structural design enhances the stability and durability of the device, and the permeation well body is firm and durable and can bear various external forces; the U-shaped water seepage frame and the wear-resistant steel part adapt to the complex underground environment, the maintenance frequency is reduced, the cost is reduced, the inclined design of the positioning block and the frame top facilitates sundry cleaning, the reserved distance is more beneficial to maintenance operation, the complete drainage mechanism ensures safe operation of the device in extreme weather, and the multiple sets of overflow ports and the drainage mechanism discharge redundant rainwater in time. The grating plate prevents the pipeline from being blocked and ensures the stability of the surrounding environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sponge city, concretely is a rainwater infiltration device for sponge city. BACKGROUND

[0002] With the continuous advancement of urbanization process, the city scale continues to expand, and the urban ecological environment problem highlights increasingly, one key aspect is that rainwater is not managed well, and a large number of impervious materials are used for ground paving in traditional city construction, so that rainwater is difficult to naturally infiltrate, which not only aggravates the burden of urban drainage system, causes frequent waterlogging during heavy rain, but also causes a large loss of rainwater resources, and the runoff carrying surface pollutants also causes serious pollution to urban water environment, which restricts the sustainable development of city.

[0003] Under the impetus of sponge city construction concept, rainwater infiltration device becomes an important means to solve rainwater problem, and currently, a kind of common rainwater infiltration device mainly comprises a permeation well, a metal filter plate and a water storage device, the permeation well is used as the main structure, is generally built by using concrete or masonry materials, has a certain depth and volume, and the inner wall is provided with a water inlet hole to facilitate rainwater inflow, the metal filter plate is installed in the interior of the permeation well, is usually made of corrosion-resistant metal such as stainless steel or galvanized iron, and is densely covered with small filter holes, can effectively intercept larger sundries such as leaves, branches and plastic garbage in rainwater, prevent the sundries from entering the bottom of the permeation well, avoid blockage, and ensure smooth infiltration process, the water storage device is connected with the permeation well, can adopt the form of underground water tank or water storage tank, is used to collect rainwater after preliminary filtration and infiltration in the permeation well, so that the rainwater can be used for subsequent secondary use, such as irrigation of garden green land and flushing of road, and the utilization rate of rainwater resources is improved, in the operation process, when it rains, rainwater first passes through the grid plate at the top of the permeation well, and then passes through the metal filter plate, the sundries are intercepted outside the filter plate, and the filtered rainwater enters the permeation well, in the permeation well, the rainwater further infiltrates into the underground soil through the permeation of the well wall and the well bottom, and replenishes the underground water, when the rainfall is large, the water level in the permeation well rises to a certain height, and the excess rainwater will flow into the water storage device for storage.

[0004] However, this kind of rainwater infiltration device also has certain problems, in actual use, although the metal filter plate can effectively intercept sundries, with the increase of use time, the intercepted sundries will gradually accumulate on the surface of the filter plate, causing the filter holes to be blocked, once the filter holes are blocked, rainwater cannot smoothly pass through the filter plate into the permeation well, which will cause rainwater to accumulate in front of the filter plate, not only affects the infiltration efficiency of the device, but also may cause rainwater to overflow and flood the surrounding area, affecting the urban environment and residents' life, therefore, in order to better realize the goal of sponge city construction, it is of great significance to improve and optimize the rainwater infiltration device and solve the problem of sundry blockage. UTILITY MODEL CONTENT

[0005] Therefore, the purpose of this utility model is to provide a rainwater infiltration device for sponge cities to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rainwater infiltration device for sponge cities, comprising an infiltration well body, an infiltration frame installed inside the infiltration well body, and a support seat corresponding to the infiltration frame installed on the inner wall of the infiltration well body, an infiltration filtration mechanism provided inside the infiltration frame for filtering debris carried by rainwater when it enters the infiltration well body, and an infiltration groove provided at the bottom of the infiltration frame.

[0007] The water infiltration filtration mechanism includes a first water infiltration layer and a second water infiltration layer;

[0008] The permeation well body is equipped with a drainage pipe on its side wall for connection to a water storage device;

[0009] The infiltration well body has an overflow outlet on its side wall, which is located above the infiltration frame. The outer wall of the infiltration well body is equipped with a drainage mechanism corresponding to the overflow outlet.

[0010] By adopting the above technical solution, the infiltration well body provides support, the infiltration frame and filter mechanism filter debris, the drainage pipe realizes rainwater collection, and the overflow outlet and drainage mechanism ensure drainage in extreme weather, laying the foundation for the coordinated work of all components and ensuring a smooth rainwater treatment process.

[0011] Furthermore, multiple sets of positioning blocks are symmetrically installed on the outer wall of the seepage frame and are slidably connected to the inner wall of the seepage well body, and the top surface of the positioning block and the top surface of the seepage frame are both designed to be inclined inward towards the seepage frame.

[0012] By adopting the above technical solution, the installation, disassembly and stable placement of the seepage frame are facilitated. The inclined design of the top surface guides rainwater and debris into the frame, reducing the risk of blockage outside the frame, reducing maintenance difficulty and improving the reliability of the device operation.

[0013] Furthermore, the cross-section of the seepage frame is U-shaped, and both the seepage frame and the outer wall of the positioning block are made of wear-resistant steel.

[0014] By adopting the above technical solutions, the U-shaped design increases the retention time of rainwater to aid filtration, and the wear-resistant steel enhances the wear and corrosion resistance of the components, adapting to underground environments, extending service life, reducing maintenance and replacement, lowering long-term costs, and ensuring the continuous operation of the device.

[0015] Furthermore, both the first and second seepage layers are located within the seepage frame, with the first seepage layer above the second seepage layer, and the plane at the top of the first seepage layer being lower than the plane at the top of the seepage frame.

[0016] Through adoption of the above technical scheme, two-layer water-permeable layers are reasonably arranged for hierarchical filtration, the first water-permeable layer of coarse sand or gravel preliminarily intercepts large-particle sundries and is not prone to be blocked, and the second water-permeable layer of gravel prevents small particles from entering the water-permeable tank, thereby improving the filtration efficiency and guaranteeing the permeation function.

[0017] Further, the first water-permeable layer is composed of materials such as coarse sand or gravel, and the second water-permeable layer is composed of gravel, and the minimum width of the gravel is greater than the width of the water-permeable tank.

[0018] Through adoption of the above technical scheme, the material characteristics of the first water-permeable layer facilitate filtration and prevent blockage, and the size of the gravel of the second water-permeable layer prevents sundries from entering the water-permeable tank, and the two layers are combined into a high-efficiency filtration system to guarantee stable operation of the device and assist in rainwater management of a sponge city.

[0019] Further, the overflow ports are symmetrically provided in multiple groups on the outer wall of the permeation well body, and a grating plate is arranged in each overflow port.

[0020] Through adoption of the above technical scheme, the grating plate preliminarily filters rainwater, prevents blockage of the pipeline, reduces the maintenance workload, and improves the drainage efficiency and stability in extreme weather.

[0021] Further, the drainage mechanism comprises a sewage discharge tank installed on the outer wall of the permeation well body and connected with the multiple groups of overflow ports, and a sewage discharge pipe is installed at the bottom of the sewage discharge tank for connection with a municipal sewage discharge pipeline, and the inner wall of the bottom of the sewage discharge tank is inclined towards the sewage discharge tank.

[0022] Through adoption of the above technical scheme, the sewage discharge tank is connected with the overflow ports to collect rainwater, the bottom is designed to be inclined to facilitate the convergence of rainwater into the sewage discharge pipe, the stable drainage in high water level is ensured, rainwater is prevented from overflowing, the municipal drainage system is connected, and efficient drainage is achieved.

[0023] In summary, the utility model mainly has the following beneficial effects:

[0024] The utility model significantly improves the quality of rainwater through the efficient filtration system, the first water-permeable layer and the second water-permeable layer cooperate to filter and effectively intercept sundries, reduce the risk of blockage, prolong the service life of the device, the first water-permeable layer composed of materials such as coarse sand is not prone to be blocked, the stable filtration and permeation efficiency are guaranteed, the good structural design enhances the stability and durability of the device, the permeation well body is solid and durable and can withstand various external forces, the U-shaped water-permeable frame and the wear-resistant steel part adapt to complex underground environments, reduce the maintenance frequency, reduce the cost, the inclined design of the positioning block and the top of the frame facilitates the cleaning of sundries, the reserved spacing is more conducive to maintenance operation, the perfect drainage mechanism ensures the safe operation of the device in extreme weather, the multiple groups of overflow ports and the drainage mechanism timely discharge excess rainwater, the grating plate prevents pipeline blockage, and the surrounding environment is stable. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall structure schematic view of the utility model;

[0026] Figure 2 It is the overall structure schematic view of the utility model after cutting;

[0027] Figure 3 It is the structure schematic view of the utility model after cutting of the water permeation frame;

[0028] Figure 4 It is the structure schematic view of the utility model from another angle of the water permeation well body;

[0029] Figure 5 It is the structure schematic view of the utility model from the top of the water permeation well body and the sewage tank;

[0030] Figure 6 It is the structure schematic view of the utility model after cutting of the water permeation well body and the sewage tank.

[0031] In the drawing: 1, water permeation well body; 11, top cover; 12, sewage tank; 121, sewage pipe; 13, drainage pipe; 2, water permeation frame; 21, first water permeation layer; 22, second water permeation layer; 23, water permeation groove; 24, positioning block; 25, crossbeam; 3, support base; 4, overflow; 41, grating plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0033] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0034] The utility model aims at providing a rainwater permeation device for a sponge city, so as to solve the problems of the existing rainwater permeation device, such as blockage of sundries, reduction of permeation efficiency, difficulty in maintenance, poor drainage and the like, improve the filtering effect, maintenance convenience and drainage stability of the rainwater permeation device, and better realize effective management and utilization of rainwater by the sponge city.

[0035] A rainwater permeation device for a sponge city, such as Figure 1 - Figure 6As shown, the device mainly consists of a permeation well body 1, a water infiltration frame 2, a support seat 3, a drainage pipe 13, a water overflow port 4, and a drainage mechanism, etc. The permeation well body 1 serves as the main structure of the device, providing a mounting base and accommodation space for other components. It is made of sturdy material, has a certain depth and volume, and can withstand soil pressure and long-term erosion of rainwater. The water infiltration frame 2 is installed in the permeation well body 1 and is supported and positioned by the support seat 3 to ensure its stability during use. The drainage pipe 13 is installed on the side wall of the permeation well body 1 to transport the rainwater that has been preliminarily treated to the water storage device, realizing the collection and reuse of rainwater. The water overflow port 4 and the drainage mechanism are set to meet the drainage needs in extreme weather conditions such as heavy rain, ensuring that the water level in the device does not become too high and preventing rainwater from overflowing and affecting the surrounding environment.

[0036] Specifically, a plurality of positioning blocks 24 are symmetrically installed on the outer wall of the water infiltration frame 2, and the positioning blocks 24 are in sliding connection with the inner wall of the permeation well body 1. This design not only facilitates the installation and removal of the water infiltration frame 2, but also facilitates regular cleaning and maintenance. It ensures the stability of the water infiltration frame 2 while ensuring the sealing between the water infiltration frame 2 and the permeation well body 1, preventing rainwater from seeping out of the gaps and affecting the normal operation of the device. The top surface of the positioning block 24 and the top surface of the water infiltration frame 2 are both designed to incline inwardly into the water infiltration frame 2. This design helps guide rainwater into the water infiltration frame 2, avoiding the accumulation of rainwater on the surface of the frame, and also facilitates the sliding of debris into the frame under the action of its own gravity, reducing the risk of blockage caused by the accumulation of debris outside the frame.

[0037] At the same time, a plurality of crossbeams 25 are installed on the top of the water infiltration frame 2 to reinforce the water infiltration frame 2 and ensure the fixity of its shape. When the water infiltration frame 2 needs to be removed, hoisting tools can be connected to the crossbeams 25 to lift the water infiltration frame 2.

[0038] The water infiltration frame 2 in this embodiment has a U-shaped cross-section design, which increases the residence time of rainwater in the frame and helps improve the filtering effect. The outer walls of the water infiltration frame 2 and the positioning blocks 24 are made of wear-resistant steel, enhancing the wear resistance and corrosion resistance of the components, allowing them to maintain good performance in long-term humid and complex underground environments, prolonging the service life of the device, reducing the frequency of maintenance and replacement due to component damage, and reducing the use cost.

[0039] The water infiltration filtering mechanism in the embodiment includes a first water infiltration layer 21 and a second water infiltration layer 22, both of which are located in the water infiltration frame 2. The first water infiltration layer 21 is composed of materials such as coarse sand or gravel, has larger particles and more pores, and can preliminarily filter leaves and larger particles of sand and other sundries in the rainwater. At the same time, due to the material characteristics, the first water infiltration layer 21 has poor adhesion to sundries and is not easy to be blocked, thereby ensuring the preliminary infiltration efficiency of the rainwater. The second water infiltration layer 22 is composed of gravel, and the minimum width of the gravel is greater than the width of the water infiltration groove 23, further intercepting smaller particles of sundries passing through the first water infiltration layer 21, preventing them from entering the water infiltration groove 23 and causing blockage, and ensuring that the rainwater can smoothly drip down through the water infiltration groove 23, thereby realizing two-stage efficient filtration and effectively protecting the subsequent infiltration well body 1 and the drainage system.

[0040] For example, a plurality of groups of overflow outlets 4 are symmetrically provided on the outer wall of the infiltration well body 1, which can ensure timely drainage under different water levels. A grating plate 41 is arranged in each overflow outlet 4 to preliminarily filter the rainwater overflow and block larger sundries such as leaves from entering the drainage mechanism to prevent the drainage pipeline from being blocked. The drainage mechanism includes a drainage tank 12 and a drainage pipe 121. The drainage tank 12 is connected to the plurality of groups of overflow outlets 4 and is used to collect the rainwater flowing out of the overflow outlets 4. The inner wall of the bottom of the drainage tank 12 is inclined toward the drainage pipe 121. Under the action of gravity, the rainwater can naturally converge and flow toward the drainage pipe 121, and finally be discharged into the municipal drainage pipeline, thereby realizing rapid and effective discharge of excess rainwater under extreme weather conditions and ensuring the drainage stability of the device and the safety of the surrounding environment.

[0041] For example, a water infiltration groove 23 is provided at the bottom of the water infiltration frame 2. The shape and size of the water infiltration groove 23 are reasonably designed, which can make the filtered rainwater uniformly and smoothly drip down and enter the infiltration well body 1. The position relationship between the water infiltration groove 23 and the first water infiltration layer 21 and the second water infiltration layer 22 is closely matched, which ensures that the rainwater can be timely discharged after being fully filtered, avoids water accumulation in the water infiltration frame 2, further improves the infiltration efficiency of the rainwater, and also reduces problems such as bacterial breeding and odor generation caused by water accumulation.

[0042] In actual operation, the components of the embodiment work cooperatively to realize effective infiltration and discharge of rainwater. When it rains, the rainwater first enters the device through the top cover 11, falls on the water infiltration frame 2, and then passes through the first water infiltration layer 21 and the second water infiltration layer 22, and finally enters the infiltration well body 1 through the water infiltration groove 23. The rainwater infiltrates into the underground soil under the infiltration action of the well wall and the well bottom. When the rainfall is large, the excess rainwater enters the drainage tank 12 through the overflow outlet 4 and is discharged into the municipal drainage pipeline through the drainage pipe 121. This cooperative working mechanism ensures that the device can stably operate under different rainfall conditions, thereby improving the overall performance and reliability of the rainwater infiltration device.

[0043] Through the comprehensive design, the rainwater infiltration device can effectively solve the problems in the prior art, improve the rainwater infiltration efficiency, reduce the risk of blockage by sundries, facilitate maintenance and management, and provide an efficient and reliable solution for rainwater management in the construction of sponge cities.

[0044] The working principle of the utility model is as follows: when rainfall occurs, rainwater first enters the inside of the infiltration well body 1 through the top cover 11 and directly falls on the water infiltration frame 2; at this time, the first water infiltration layer 21 and the second water infiltration layer 22 arranged in the water infiltration frame 2 begin to play their key filtering functions; the first water infiltration layer 21 is composed of materials such as coarse sand or gravel, and its unique material properties make it have a lower degree of adhesion with sundries such as leaves than traditional metal filter screens, which greatly reduces the probability of being blocked by sundries, thereby ensuring that rainwater can continue to infiltrate downward more smoothly; the second water infiltration layer 22 is composed of gravel, and through the synergistic filtering effect of the two water infiltration layers, the entry of sundries such as leaves into the deeper part of the infiltration well body 1 is effectively prevented, thereby replacing the filter screen in the traditional technology which is prone to blockage and has a short service life.

[0045] When the rainwater successfully penetrates the two water infiltration layers, it will drip downward through the water infiltration groove 23 formed at the bottom of the water infiltration frame 2; then, under the natural infiltration of the well wall and the well bottom of the infiltration well body 1, the rainwater gradually infiltrates into the underground soil, achieving the replenishment of underground water; it is worth noting that a spacing of 0.75M-1M is reserved between the water infiltration frame 2 and the top of the infiltration well body 1, which ingeniously takes into account the convenience of subsequent maintenance work; when it is necessary to clean the accumulated sundries such as leaves in the water infiltration frame 2, the operator can operate more easily.

[0046] In the case of heavy rain, two situations may occur, causing rainwater to remain or overflow on the water infiltration frame 2; first, when the water inflow of the infiltration well body 1 greatly exceeds the water infiltration capacity of the water infiltration frame 2 in a short time, rainwater will accumulate on the water infiltration frame 2; second, if the rainfall is too heavy, causing the storage capacity of the water storage device to reach the upper limit, rainwater will also overflow onto the water infiltration frame 2; in these two cases, as the water level continues to rise, rainwater will flow to the sewage tank 12 through the overflow port 4; in this process, the grid plate 41 arranged in the overflow port 4 will preliminarily and slightly filter the rainwater, effectively preventing larger sundries such as leaves from entering the sewage tank 12; due to the design that the inner wall at the bottom of the sewage tank 12 is inclined towards the sewage pipe 121, the rainwater flowing out from multiple overflow ports 4 will naturally converge towards the sewage pipe 121 under the action of gravity, and finally be discharged into the municipal sewage pipeline through the sewage pipe 121, ensuring that the device can timely and effectively discharge excess rainwater under extreme weather conditions, avoiding the adverse consequences of excessive accumulation of rainwater in the device and causing overflow, thereby ensuring the stability and safety of the device and the surrounding environment.

[0047] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A rainwater infiltration device for sponge city, characterized in that, Including the infiltration well body (1), the water infiltration frame (2) is installed in the infiltration well body (1), and the supporting seat (3) corresponding to the water infiltration frame (2) is installed on the inner wall of the infiltration well body (1), the water infiltration frame (2) is provided with a water infiltration filtering mechanism for filtering sundries carried by rainwater when entering the infiltration well body (1), and the water infiltration frame (2) is provided with a water infiltration groove (23) at the bottom; The water infiltration filtering mechanism comprises a first water infiltration layer (21) and a second water infiltration layer (22); The drainage pipe (13) is installed on the side wall of the infiltration well body (1) and is connected with the water storage device; The overflow port (4) is arranged on the side wall of the infiltration well body (1), the overflow port (4) is located above the water infiltration frame (2), and the outer wall of the infiltration well body (1) is provided with a drainage mechanism corresponding to the overflow port (4).

2. The rainwater infiltration device for sponge city according to claim 1, characterized in that: The outer wall of the water infiltration frame (2) is symmetrically provided with a plurality of positioning blocks (24) which are in sliding connection with the inner wall of the infiltration well body (1), and the top surface of the positioning block (24) and the top surface of the water infiltration frame (2) are inclined towards the water infiltration frame (2).

3. The rainwater infiltration device for sponge city of claim 2, wherein: The cross section of the water infiltration frame (2) is designed as a U shape, and the outer walls of the water infiltration frame (2) and the positioning block (24) are provided with wear-resistant steel.

4. The rainwater infiltration device for sponge city of claim 1, wherein: The first water infiltration layer (21) and the second water infiltration layer (22) are located in the water infiltration frame (2), the first water infiltration layer (21) is located above the second water infiltration layer (22), and the top of the first water infiltration layer (21) is located at a lower plane than the top of the water infiltration frame (2). 5.The rainwater infiltration device for a sponge city of claim 1, wherein: The first water infiltration layer (21) is composed of coarse sand or gravel material, the second water infiltration layer (22) is composed of gravel, and the minimum width of the gravel is greater than the width of the water infiltration groove (23). 6.The rainwater infiltration device for a sponge city of claim 1, wherein: A plurality of overflow ports (4) are symmetrically arranged on the outer wall of the infiltration well body (1), and a grating plate (41) is arranged in each overflow port (4).

7. The rainwater infiltration device for sponge city of claim 1, wherein: The drainage mechanism comprises a drainage tank (12) installed on the outer wall of the infiltration well body (1) and connected with a plurality of overflow ports (4), a drainage pipe (121) is installed at the bottom of the drainage tank (12) and connected with a municipal drainage pipeline, and the inner wall of the bottom of the drainage tank (12) is inclined towards the drainage tank (12).

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