A roof rainwater cutoff structure

Abstract

This application relates to the technical field of rainwater utilization, and in particular to a roof rainwater interruption structure, including a rainwater downpipe and an energy dissipation tank. A trap frame is installed on the top of the energy dissipation tank, and the surface of the trap frame is covered with a filter layer. The filter layer is connected to a rain garden, and the outlet end of the rainwater downpipe is aligned with the filter layer. Rainwater inlets are opened on the side wall of the energy dissipation tank, and a filtration layer is provided on the outside of the energy dissipation tank. This application provides a roof rainwater interruption structure that further improves the rainwater filtration effect.

Description

Technical Field

[0001] This application relates to the technical field of rainwater utilization, and in particular to a roof rainwater interruption structure. Background Technology

[0002] Traditional roof rainwater harvesting systems consist of drain pipes and gutters. The drain pipes are installed vertically along the walls, while the gutters are located on the ground. The drain pipes connect both the roof and the gutters. During rainy weather, rainwater flows down the drain pipes into the gutters, and then from the gutters into a drainage tank.

[0003] In practical applications, since existing drainage pipes and ditches do not have the ability to separate and process wastewater, grates are usually installed at the inlet or outlet of the drainage pipes. When rainwater is discharged, it carries plant substrate or impurities such as mud and sand. The grates separate the impurities from the rainwater. However, the grates can only isolate some large hard objects and cannot be effective for small particles of mud and sand. Therefore, the collected rainwater has low clarity and high impurity rate, which does not meet the usage requirements. Summary of the Invention

[0004] To further improve the filtration effect of rainwater, this application provides a roof rainwater interruption structure.

[0005] This application provides a roof rainwater interception structure, which adopts the following technical solution:

[0006] A roof rainwater interruption structure includes a rainwater downpipe and an energy dissipation tank. A dirt interception frame is installed on the top of the energy dissipation tank. The surface of the dirt interception frame is covered with a filter layer. The filter layer is connected to the rain garden. The output end of the rainwater downpipe is aligned with the filter layer. Rainwater inlets are opened on the side wall of the energy dissipation tank. A filtration layer is provided on the outside of the energy dissipation tank.

[0007] By adopting the above technical solution, the rainwater output from the rainwater downpipe is directly directed to the filter layer. The rainwater passes through the filter layer and the intercepting frame from the rainwater downpipe and then enters the energy dissipation tank. During the sedimentation process, the rainwater slowly permeates the filter layer before being discharged, thereby improving the filtration effect of the rainwater.

[0008] Compared with existing technologies, this application, by setting up interception frames and filter layers, can achieve preliminary interception and filtration of rainwater from the roof, effectively removing large particulate pollutants from the rainwater. By connecting the filter layer to the rain garden, natural purification of rainwater is achieved. At the same time, the energy dissipation pool is used to dissipate the energy of rainwater, and the rainwater is discharged in an orderly manner from the rainwater outlet on the side wall of the energy dissipation pool. The filtration layer set on the outside of the energy dissipation pool further improves the purification effect of rainwater, ensuring that the discharged rainwater meets environmental protection standards.

[0009] Preferably, the filtration layer is arranged in the lower layer of the energy dissipation tank, and the rainwater inlet is located in the area of ​​the energy dissipation tank where the filtration layer is provided.

[0010] By adopting the above technical solution, the filtration layer is arranged in the lower layer of the energy dissipation pool, so that the pre-treated rainwater can naturally infiltrate into the filtration layer, thereby optimizing the filtration path, improving the purification efficiency, and ensuring that the rainwater treated by the filtration layer can be discharged in a targeted manner to avoid secondary pollution.

[0011] Preferably, the filtration layer includes a gravel layer, which wraps around the sidewall of the energy dissipation tank, and a geotextile layer is laid on the side of the gravel layer away from the energy dissipation tank.

[0012] By adopting the above technical solution, the gravel layer, as the main component of the filtration layer, effectively removes fine particles and impurities from rainwater through its good permeability and filtration performance. The geotextile layer is laid on the outside of the gravel layer, which not only prevents the gravel from falling off, but also protects the soil and groundwater, and enhances the stability of the overall structure.

[0013] Preferably, the input end of the energy dissipation tank is also provided with a buffer sedimentation well, which is located inside the energy dissipation tank and below the intercepting frame.

[0014] By adopting the above technical solution, the buffer sedimentation well is set inside the energy dissipation tank and below the intercepting frame, which plays a role in buffering the high-speed falling rainwater and reducing the impact of rainwater on the subsequent treatment units. At the same time, the buffer sedimentation well can also settle heavy pollutants such as mud and sand carried in the rainwater, further improving the rainwater treatment effect.

[0015] Preferably, the filter layer is a pebble pad.

[0016] By adopting the above technical solution, the pebble cushion layer, as a natural material, has good filtration performance and permeability, which can effectively remove impurities and particulate matter from rainwater and improve water quality. Furthermore, pebbles are renewable, making them more environmentally friendly. At the same time, the pebble cushion layer can maintain a stable filtration effect over a long period of time, reducing maintenance costs. In addition, the pebble cushion layer has a large particle size and weight, which can increase the stability of the entire rainwater cutoff structure, reduce structural damage caused by water flow erosion, and ensure the safe operation of the system.

[0017] Preferably, a fixed bracket is provided between the rainwater downpipe and the building exterior wall, and the rainwater downpipe is vertically installed on the building exterior wall through the fixed bracket.

[0018] By adopting the above technical solution, the installation of fixed supports can ensure that the rainwater downpipe is installed vertically on the exterior wall of the building, reducing pipe displacement or damage caused by external forces, and making rainwater drainage smoother.

[0019] Preferably, the rainwater downpipe includes a straight pipe and a bend, wherein the bend is an S-shaped pipe, one end of the bend is connected to the straight pipe, and the other end faces the filter layer.

[0020] By adopting the above technical solution, the design of the S-shaped bend causes rainwater to vortex as it flows through the bend, thereby slowing down the flow rate and consuming some energy. By directing the outlet of the bend toward the filter layer, it is possible to ensure that rainwater can be evenly distributed on the surface of the filter layer, which helps to improve the utilization rate and treatment effect of the filter layer.

[0021] Preferably, the height h of the lowest end of the bend from the filter layer is 100mm < h < 400mm.

[0022] By adopting the above technical solution, and by setting the height of the lowest end of the bend from the filter layer to between 100mm and 400mm, rainwater can be effectively prevented from splashing directly from the outlet of the bend to the outside of the filter layer. The appropriate height setting allows rainwater to enter the filter layer at a suitable speed and angle after flowing out of the bend, thereby optimizing the water flow path and improving the treatment efficiency.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Compared with the prior art, this application can achieve preliminary interception and filtration of rainwater on the roof by setting up interception frames and filter layers, effectively removing large particulate pollutants in the rainwater. By connecting the filter layer with the rain garden, the rainwater is naturally purified. At the same time, the energy dissipation pool is used to dissipate the energy of the rainwater. The rainwater is discharged in an orderly manner from the rainwater outlet on the side wall of the energy dissipation pool. The filtration layer set on the outside of the energy dissipation pool improves the purification effect of the rainwater and ensures that the discharged rainwater meets environmental protection standards.

[0025] 2. The buffer sedimentation well is located inside the energy dissipation tank and below the intercepting frame. It serves to buffer the high-speed falling rainwater, reducing the impact of rainwater on subsequent treatment units. At the same time, the buffer sedimentation well can also settle heavy pollutants such as silt carried in the rainwater, further improving the rainwater treatment effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the roof rainwater cutoff structure in the embodiments of this application.

[0027] Explanation of reference numerals in the attached diagram: 1. Rainwater downpipe; 11. Straight downpipe; 12. Bend; 2. Energy dissipation tank; 21. Rainwater inlet; 3. Filter layer; 4. Sewage interception frame; 5. Fixed support; 6. Exterior wall; 7. Rain garden; 8. Filtration layer; 81. Gravel layer; 82. Geotextile layer; 83. Stepped trough; 9. Connecting filter layer. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0029] This application discloses a roof rainwater interruption structure.

[0030] Reference Figure 1 A roof rainwater cutoff structure includes a rainwater downpipe 1 and an energy dissipation tank 2. A dirt interception frame 4 is installed on the top of the energy dissipation tank 2. The dirt interception frame 4 can be made of corrosion-resistant galvanized steel plate. The surface of the dirt interception frame 4 is covered with a filter layer 3, which is a pebble cushion layer. As a natural material, the pebble cushion layer has renewable capacity, good filtration performance and water permeability. The pebble cushion layer has a large particle size and weight, which can increase the downward pressure on the energy dissipation tank 2 and the mechanism installed in the energy dissipation tank 2, reduce the floating phenomenon of the mechanism due to rainwater erosion, and reduce the structural damage caused by water flow erosion.

[0031] A fixed bracket 5 is installed between the rainwater downpipe 1 and the building exterior wall 6. The fixed bracket 5 is a high-strength metal bracket. The fixed bracket 5 can be directly riveted to the wall or fixed to one side of the exterior wall 6 by bolt connection. This can reduce pipe displacement or damage caused by external force, keep the rainwater downpipe 1 in a vertical state, and make rainwater discharge smoother.

[0032] The output end of the rainwater downpipe 1 is aligned with the filter layer 3. Specifically, the rainwater downpipe 1 includes a straight pipe 11 and a bend 12. The bend 12 is an S-shaped pipe. One end of the bend 12 is connected to the straight pipe 11, and the other end faces the filter layer 3. The distance h between the lowest end of the bend 12 and the filter layer 3 is 100mm < h < 400mm, preferably 300mm.

[0033] In this application, the design of the S-shaped bend 12 causes rainwater to vortex as it flows through the bend 12, thereby slowing down the flow velocity and consuming some energy. The outlet of the bend 12 faces the ground, allowing the rainwater to disperse and ensuring that it is evenly distributed on the surface of the filter layer 3. This helps improve the utilization rate and treatment effect of the filter layer 3. Furthermore, by setting the height of the lowest point of the bend 12 from the filter layer 3 between 100mm and 400mm, rainwater can be effectively prevented from splashing directly onto the outside of the filter layer 3 from the outlet of the bend 12. The appropriate height setting allows rainwater to enter the filter layer 3 at a suitable speed and angle after flowing out of the bend 12, thereby optimizing the water flow path and improving treatment efficiency.

[0034] More specifically, refer to Figure 1The filter layer 3 is connected to the rain garden 7, so that as rainwater falls from the filter layer 3 into the energy dissipation pool 2, some of the rainwater can flow along the runoff direction of the plants to nourish them. Conversely, when the plants are saturated with water, the rainwater can also flow along the filter layer 3 and be discharged from the energy dissipation pool 2.

[0035] Reference Figure 1 The input end of the energy dissipation tank 2 is also equipped with a buffer sedimentation well. The buffer sedimentation well is located inside the energy dissipation tank 2 and below the intercepting frame 4. The buffer sedimentation well is made of polyethylene and can buffer the rainwater falling at high speed, reducing the impact of rainwater on the subsequent treatment units. At the same time, the buffer sedimentation well can also settle heavy pollutants such as mud and sand carried in the rainwater, further improving the rainwater treatment effect, that is, the effect of secondary purification of rainwater.

[0036] Furthermore, rainwater inlets 21 are opened on the side wall of the energy dissipation pool 2. A filtration layer 8 is provided on the outside of the energy dissipation pool 2. The filtration layer 8 is arranged in the lower layer of the energy dissipation pool 2. The rainwater inlets 21 are opened in the area of ​​the energy dissipation pool 2 where the filtration layer 8 is provided. The number of rainwater inlets 21 is determined according to the situation, ensuring that the opening rate of the side wall of the energy dissipation pool 2 is 3%-5%.

[0037] This application optimizes the filtration path and improves purification efficiency by arranging the filtration layer 8 at the lower level of the energy dissipation pool 2, allowing the pre-treated rainwater to naturally infiltrate into the filtration layer 8. At the same time, it ensures that the rainwater treated by the filtration layer 8 can be discharged in a directed manner to avoid secondary pollution.

[0038] The filtration layer 8 includes a gravel layer 81, which has good permeability and filtration performance, and can effectively remove fine particles and impurities from rainwater. The gravel layer 81 is wrapped around the side wall of the energy dissipation pool 2. A geotextile layer 82 is laid on the side of the gravel layer 81 away from the energy dissipation pool 2, which can prevent the gravel from falling off to a certain extent, protect the soil and groundwater, and help enhance the stability of the overall structure.

[0039] Reference Figure 1 The filtration layer 8 of this application has stepped grooves 83, the diameter of which gradually decreases from top to bottom, so that the energy dissipation pool 2 is embedded and fixed in the groove with the smallest diameter in the filtration layer 8. For the portion of the energy dissipation pool 2 that is not in direct contact with the filtration layer 8, a connecting filter layer 9 is added. The connecting filter layer 9 wraps around the upper outer wall of the energy dissipation pool 2, increasing the contact area between the energy dissipation pool 2 and the filtration layer 8, allowing the energy dissipation pool 2 to be tightly connected to the filtration layer 8. To ensure consistency, the structure of the connecting filter layer 9 is consistent with the structure of the filtration layer 8, both consisting of a gravel layer 81 and a geotextile layer 82. This allows water overflowing from the wellhead of the buffer sedimentation well to also fall along the connecting filter layer 9 into the filtration layer 8, thus ensuring orderly drainage.

[0040] The above are all preferred embodiments of this application. These embodiments are merely explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roof rainwater break structure, characterized by, It includes a rainwater downpipe (1) and an energy dissipation pool (2). The top of the energy dissipation pool (2) is provided with a dirt interception frame (4). The surface of the dirt interception frame (4) is covered with a filter layer (3). The filter layer (3) is connected to the rain garden (7). The output end of the rainwater downpipe (1) is aligned with the filter layer (3). The side wall of the energy dissipation pool (2) is provided with a rainwater outlet (21). The outside of the energy dissipation pool (2) is provided with a filtration layer (8).

2. The roof rainwater interruption structure according to claim 1, characterized in that, The filtration layer (8) is arranged in the lower layer of the energy dissipation pool (2), and the rainwater inlet (21) is opened in the area of ​​the energy dissipation pool (2) where the filtration layer (8) is provided.

3. The roof rainwater interruption structure according to claim 2, characterized in that, The filtration layer (8) includes a gravel layer (81) that wraps around the sidewall of the energy dissipation pool (2), and a geotextile layer (82) is laid on the side of the gravel layer (81) away from the energy dissipation pool (2).

4. A roof rainwater interruption structure according to claim 3, characterized in that, The energy dissipation tank (2) is also equipped with a buffer sedimentation well at its input end. The buffer sedimentation well is located inside the energy dissipation tank (2) and below the intercepting frame (4).

5. A roof rainwater interruption structure according to claim 1, characterized in that, The filter layer (3) is a pebble cushion layer.

6. A roof rainwater interruption structure according to claim 1, characterized in that, A fixed bracket (5) is provided between the rainwater downpipe (1) and the building exterior wall (6), and the rainwater downpipe (1) is vertically installed on the building exterior wall (6) through the fixed bracket (5).

7. A roof rainwater interruption structure according to claim 6, characterized in that, The rainwater downpipe (1) includes a straight pipe (11) and a bend (12), wherein the bend (12) is an S-shaped pipe, one end of the bend (12) is connected to the straight pipe (11), and the other end faces the filter layer (3).

8. A roof rainwater interruption structure according to claim 7, characterized in that, The height h of the lowest end of the bend (12) from the filter layer (3) is 100mm < h < 400mm.

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