A sponge rainwater outlet

Abstract

This utility model provides a sponge-like rainwater inlet that integrates drainage and sponge functions, adaptable to confined spaces. Its features include: a rainwater inlet body and a water storage structure; wherein the rainwater inlet body includes a first functional section and a second functional section; a diversion channel connects the first and second functional sections; an overflow structure is provided at the junction of the first and second functional sections; the first functional section also has a rainwater channel connected to a rainwater pipe; and the second functional section has a water storage channel connected to the water storage structure. This utility model provides a sponge-like rainwater inlet that integrates functions, combining the collection and discharge functions of a traditional rainwater inlet with the regulation, infiltration, and purification functions of a sponge facility, eliminating the need for additional large-scale sponge facilities.

Description

Technical Field

[0001] This utility model relates to the fields of municipal facilities and sponge city technology, specifically to a sponge rainwater inlet device that integrates rainwater collection, initial runoff diversion, regulation and infiltration and overflow discharge functions, and is suitable for sponge city construction and rainwater runoff management in shipyards. Background Technology

[0002] Storm drains, as key drainage structures for collecting surface runoff, are widely used in roads, factory areas, and other sites, and their layout is flexible and diverse. Traditional storm drains can be classified by material into brick masonry, concrete modular masonry, and precast concrete types, and by drainage method into flat grate type and side-ditch type, etc. Their main function is to collect surface runoff and discharge it into municipal or factory pipe networks. A common brick masonry side-ditch type single-grate storm drain design is shown below. Figure 1 as well as Figure 2 A flowchart of a traditional rainwater inlet.

[0003] Based on the above structure, traditional rainwater inlets only have the function of rainwater collection and discharge, but cannot achieve the "water absorption, water storage, water infiltration, and water purification" functions required by sponge cities. At the same time, existing conventional sponge facilities have certain limitations. Above-ground sponge facilities, such as sunken green spaces, have low storage capacity per unit area and are not suitable for shipyards with limited green space. Underground storage tanks are mostly located at the end of the pipeline network, with large burial depths, high costs, and low economic benefits.

[0004] Shipyards and other special sites, due to limitations in production processes and layout, lack both the space to install above-ground sponge city facilities and the cost of large underground storage tanks, making it difficult to achieve the goals of sponge cities. Therefore, there is an urgent need for a rainwater inlet device that can integrate drainage and sponge city functions and adapt to confined spaces. Utility Model Content

[0005] This utility model aims to solve the problems of traditional rainwater inlets lacking sponge functions such as water storage, infiltration, and water purification, and the difficulty in setting up conventional sponge facilities in space-constrained sites such as shipyards. It provides a rainwater inlet device that combines rainwater collection and discharge with sponge functions, is flexible in layout, and is cost-effective.

[0006] To achieve the above objectives, this utility model provides a sponge-like rainwater inlet that integrates drainage and sponge functions, and can adapt to confined spaces. Its features include a rainwater inlet body and a water storage structure.

[0007] The main body of the rainwater inlet includes a first functional part and a second functional part;

[0008] A diversion channel connects the first functional unit and the second functional unit;

[0009] The first functional section has an overflow structure at the junction with the second functional section;

[0010] The first functional section also has a rainwater channel connected to the rainwater pipe;

[0011] The second functional section has a water storage channel that is connected to the water storage structure.

[0012] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0013] The water storage structure is a multi-layer water storage structure, which consists of a first cushion layer, a second cushion layer, a water storage layer, a transition layer and a planting soil layer from bottom to top.

[0014] The water storage channel connects to the water storage layer.

[0015] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0016] The water storage structure includes sedimentation wells and multi-layer water storage structures;

[0017] The water storage channel connects to the sedimentation well;

[0018] The sedimentation well is located in the middle of the multi-layer water storage structure, and its well wall has several through holes.

[0019] The multi-layered water storage structure consists of a first cushion layer, a second cushion layer, a water storage layer, a transition layer, and a planting soil layer, arranged sequentially from bottom to top.

[0020] The through-hole connects to the water storage layer.

[0021] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0022] The aquifer has a high porosity structure.

[0023] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0024] Several aeration pipes are inserted into the planting soil layer.

[0025] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0026] The height of the central axis of the rainwater channel shall not be lower than the height of the central axis of the diversion channel.

[0027] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0028] The opening of the first functional section is covered by a waterproof structure.

[0029] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0030] The opening of the second functional section is equipped with a rain grate.

[0031] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0032] The diversion channel is located below the middle of the first functional section and the second functional section in the depth direction.

[0033] Furthermore, the sponge-shaped rainwater inlet provided by this utility model is further characterized in that:

[0034] An overflow structure is located at the top of the junction between the first functional section and the second functional section.

[0035] The function and effects of this utility model:

[0036] The sponge rainwater inlet provided by this utility model integrates functions, that is, it has the collection and discharge function of traditional rainwater inlets, as well as the regulation, infiltration and water purification functions of sponge facilities, without the need to set up additional large-scale sponge facilities.

[0037] The sponge rainwater inlet design provided by this utility model is highly adaptable and can be flexibly arranged in places such as roads and factory areas. It is especially suitable for space-constrained areas such as shipyards, and solves the problems of large land occupation and high cost of traditional above-ground sponge facilities and underground facilities.

[0038] The sponge-shaped rainwater inlet provided by this utility model realizes phased treatment, namely, reducing pollution through initial diversion, realizing rainwater resource utilization through regulation and storage, and ensuring drainage safety and improving rainwater management efficiency through overflow.

[0039] The sponge rainwater inlet provided by this utility model is economical. Specifically, this design adopts a modular design concept, which makes construction simple and the cost is lower than that of large-scale water storage facilities. Furthermore, the module type can be selected according to the site load to reduce maintenance costs. Attached Figure Description

[0040] Figure 1 Schematic diagram of a brick masonry off-center channel type single grate rainwater inlet structure.

[0041] Among them, A is the plan view of the brick masonry side-ditch type single grate rainwater inlet, B is the 1-1 section view of the brick masonry side-ditch type single grate rainwater inlet, and C is the 2-2 section view of the brick masonry side-ditch type single grate rainwater inlet.

[0042] Figure 2 Traditional rainwater inlet flow diagram;

[0043] Figure 3 The application example provides a top plan view of the sponge rainwater inlet;

[0044] Figure 4A plan view of the lower layer of the sponge rainwater inlet provided in the application example;

[0045] Figure 5 .1-1 Cross-sectional view of the sponge rainwater inlet provided in the application example;

[0046] Figure 6 .2-2 Cross-sectional view of the sponge rainwater inlet provided in the application example;

[0047] Figure 7 .3-3 Cross-sectional view of the sponge rainwater inlet provided in the application example;

[0048] Figure 8 .4-4 cross-sectional view of the sponge rainwater inlet provided in the application example;

[0049] Figure 9 The application example provides a schematic diagram of the processing principle of the sponge rainwater inlet. Detailed Implementation

[0050] 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.

[0051] The general structure of this embodiment is as follows:

[0052] This embodiment provides a sponge rainwater inlet that integrates drainage and sponge functions, can adapt to small spaces, and includes a rainwater inlet body and a water storage structure.

[0053] The main body of the rainwater inlet includes a first functional part and a second functional part, both of which are in the traditional manhole shape.

[0054] The opening of the first functional section is concealed by an impermeable structure, that is, it adopts a closed manhole cover without water seepage function.

[0055] The opening of the second functional section is equipped with a rain grate, that is, it uses a rain grate that can collect water and filter large impurities as a cover structure.

[0056] A diversion channel connects the first functional section and the second functional section, through which sewage during the initial rain period is collected from the second functional section and flows into the first functional section.

[0057] The first functional section is provided with an overflow structure at the junction with the second functional section. This overflow structure enables excess rainwater to overflow from the second functional section into the first functional section during heavy rain.

[0058] The first functional unit also has a rainwater channel connected to the rainwater pipe (generally referring to the rainwater pipe network). Through the rainwater channel, rainwater at different stages is introduced into the rainwater pipe network, and the operation of entering the sewage pipe network for further treatment or direct discharge is realized according to different stages.

[0059] The second functional section has a water storage channel connected to the water storage structure, thereby allowing a portion of the rainwater to be pumped into the water storage structure to achieve the effects of regulation, infiltration, and water purification.

[0060] The water storage structure can be a multi-layer water storage structure, with a first cushion layer, a second cushion layer, a water storage layer, a transition layer and a planting soil layer arranged sequentially from bottom to top; the water storage channel is directly connected to the water storage layer to achieve the water storage effect.

[0061] The water storage structure can also include a sedimentation well and a multi-layer water storage structure;

[0062] The water storage channel connects to the sedimentation well;

[0063] The sedimentation well is located in the middle of the multi-layer water storage structure, and its well wall has several through holes.

[0064] The multi-layered water storage structure consists of a first cushion layer, a second cushion layer, a water storage layer, a transition layer, and a planting soil layer, arranged sequentially from bottom to top; the water storage layer is connected by through holes.

[0065] In this embodiment, the water storage layer has a high porosity structure (>80%); several air-permeable pipes are inserted into the planting soil layer.

[0066] Furthermore, to achieve optimal fluid flow between the various components, the central axis height of the rainwater channel is not lower than the central axis height of the diversion channel. The diversion channel is located below the middle of the first and second functional sections in the depth direction. The overflow structure is located at the top of the junction between the first and second functional sections.

[0067] The following are application examples designed based on the above experimental cases:

[0068] like Figure 3-8 As shown, the rainwater inlet device with sponge function provided in this application example includes a rainwater inlet body 100 and a water storage module 200 connected in parallel with it, and the specific structure is as follows:

[0069] The main body of the storm drain includes a first functional section 110 and a second functional section 120. Depending on the site, it can be selected as a flat grate type (for areas without curbs), a side ditch type (for roads with curbs), or a combined type (for areas with concentrated runoff and prone to blockage). Its masonry uses MU15 sintered common bricks, MU20 concrete common bricks (constructed with M10 cement mortar), or MU15 concrete modules (constructed with M10 cement mortar), or C30 reinforced concrete precast components (including HPB300 and HRB400 steel bars, with a protective layer thickness of 20mm).

[0070] The dimensions of the first functional unit 110 and the second functional unit 120 are the same;

[0071] The first functional unit 110 is used for inspection, pipeline maintenance and drainage of overflow / overflow rainwater, and is equipped with a waterproof inspection cover 111;

[0072] The second functional section 120 receives surface runoff rainwater and is equipped with a 750×450mm rainwater grate (opening ratio 34%, load rating: C250 for landscape areas, ≥E600 for roads / sites, material is ductile iron, steel grating or composite resin, connected to the support pin / chain to prevent loss).

[0073] A diversion channel 130 is connected between the first functional part 110 and the second functional part 120. The diameter of the diversion channel 130 is DN50-DN100. The diversion channel 130 is located at a position not less than 300mm from the bottom of the first functional part 110 and the second functional part 120.

[0074] An overflow port 160 is provided at the junction of the first functional part 110 and the second functional part 120. The bottom elevation of the overflow port is greater than or equal to the top elevation of the water storage module, the top of the overflow port is ≥ 200 mm from the top of the well wall, and the cross-sectional area meets the requirements for full flow drainage.

[0075] The first functional unit 110 also has a rainwater channel 140 connected to the rainwater pipe network with a minimum pipe diameter of 200mm. Through this rainwater channel, the initial rainwater and the subsequent overflow rainwater will enter the rainwater pipe network for unified management and treatment.

[0076] The second functional unit 120 has a water storage channel 150 connected to the water storage structure, with a minimum pipe diameter of 200 mm;

[0077] The water storage structure includes sedimentation well 210 and a multi-layer water storage structure;

[0078] Rainwater collected in the second functional unit 120 is directed into the sedimentation well 210 through the water storage channel 150.

[0079] The wall of the sedimentation well 210 has several through holes 211;

[0080] The multi-layer water storage structure consists of a first cushion layer 221, a second cushion layer 222, a water storage module 223, a transition layer 224, and a planting soil layer 225, arranged sequentially from bottom to top.

[0081] The first cushion layer 221 is a 100mm thick C20 fine aggregate concrete cushion layer;

[0082] The second cushion layer 222 is a coarse sand cushion layer with a thickness of 8-16 mm and a porosity of 100-200 mm (porosity 0.2-0.3).

[0083] The water storage module 223 is a PP / PE plastic module (1000×500×400mm, porosity ≥90%) conforming to CJ / T 542 standard. Lightweight (green space, sidewalk) or heavy-duty (parking lot, driveway) modules are selected according to the load. The through hole 211 corresponds to the position of the water storage module 223.

[0084] The transition layer 224 is a non-woven geotextile with a weight of ≥300g / m² that covers the top and sides of the water storage module.

[0085] The top layer of planting soil, 225, is the outermost layer, such as sandy loam with a permeability coefficient > 5 × 10⁻⁶. -5 The speed is m / s, which meets the CJ / T 340 standard. Several air-permeable pipes 220 are inserted in the planting soil layer 225.

[0086] The multi-layered water storage structure is arranged linearly along the long strip space between the road edge and the external pipeline, with a width of 500mm, ≥2 layers, and the lowest layer is located above the groundwater level.

[0087] The work process is as follows Figure 9 As shown:

[0088] Initial Rainfall Stage: In the early stages of rainfall, surface runoff flows into the second functional section through the grate. Due to the small volume and heavy pollution, it enters the first functional section through the diversion hole, is discharged into the plant's rainwater pipe network through the discharge pipe, and finally enters the sewage pipe network through the initial rainwater collection pond, thus realizing the diversion of initial rainwater.

[0089] Rainwater regulation and storage stage: After the rainfall increases, the water level in the second functional section rises to the height of the water storage channel. The rainwater flows through the water storage channel and then enters the water storage module for storage. After the rainfall ends, the rainwater in the water storage module is filtered by geotextile and then seeps into the groundwater layer. After being emptied, it waits for the next rainfall to achieve regulation and peak shaving.

[0090] Overflow discharge stage: When the water storage module is full and rainfall continues, the water level in the second functional section rises to the overflow outlet. Rainwater enters the first functional section through the overflow outlet and is discharged into the plant's rainwater pipe network through the discharge pipe, ensuring smooth drainage and realizing overflow discharge.

Claims

1. A sponge-like rainwater inlet, integrating drainage and sponge functions, adaptable to confined spaces, characterized in that: Includes the main body of the rainwater inlet and the water storage structure; The main body of the rainwater inlet includes a first functional part and a second functional part; A flow diversion channel is connected between the first functional unit and the second functional unit; The first functional unit has an overflow structure at the junction with the second functional unit; The first functional unit also has a rainwater channel connected to the rainwater pipe; The second functional unit has a water storage channel that is connected to the water storage structure.

2. The sponge-like rainwater inlet as described in claim 1, characterized in that: The water storage structure is a multi-layer water storage structure, consisting of a first cushion layer, a second cushion layer, a water storage layer, a transition layer, and a planting soil layer, arranged sequentially from bottom to top. The water storage channel connects to the water storage layer.

3. The sponge-like rainwater inlet as described in claim 1, characterized in that: The water storage structure includes sedimentation wells and multi-layer water storage structures; The water storage channel is connected to the sedimentation well; The sedimentation well is located in the middle of the multi-layer water storage structure, and its well wall has several through holes. The multi-layer water storage structure consists of, from bottom to top, a first cushion layer, a second cushion layer, a water storage layer, a transition layer, and a planting soil layer. The through hole connects to the water storage layer.

4. A sponge-like rainwater inlet as described in claim 2 or 3, characterized in that: The water storage layer has a high porosity structure.

5. A sponge-like rainwater inlet as described in claim 2 or 3, characterized in that: Several air-permeable pipes are inserted into the planting soil layer.

6. A sponge-like rainwater inlet as described in claim 1, characterized in that: The height of the central axis of the rainwater channel shall not be lower than the height of the central axis of the diversion channel.

7. A sponge-like rainwater inlet as described in claim 1, characterized in that: The opening of the first functional part is shielded by a waterproof structure.

8. A sponge-like rainwater inlet as described in claim 1, characterized in that: The opening of the second functional section is equipped with a rain grate.

9. A sponge-like rainwater inlet as described in claim 1, characterized in that: The diversion channel is located below the middle of the first functional section and the second functional section in the depth direction.

10. A sponge-like rainwater inlet as described in claim 1, characterized in that: The overflow structure is located at the top of the junction between the first functional part and the second functional part.

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