Planted roof outfall structure

Abstract

The utility model relates to the field of constructional engineering, in particular to a planting roof drain gully structure which comprises a roof layer and two planting areas, a roof drain is arranged on the roof layer, a heat preservation layer, a slope making layer, a leveling layer, a waterproof layer and a protective layer are sequentially laid on the upper end face of the roof layer from bottom to top, a flow guide mechanism is arranged between the two planting areas, and the slope making layer is arranged between the two planting areas. The diversion mechanism comprises a permeable layer located on the upper end face of the protective layer and a drainage cylinder, the permeable layer is located on the outer side of the drainage cylinder, a first water falling grate is installed on the upper end face in the drainage cylinder, and permeable concrete colored surface layers are laid on the top of the drainage cylinder and the top of the permeable layer. Water flow resistance is reduced, so that rainwater can be quickly drained through the rainwater hopper, roof accumulated water can be drained in time, local water accumulation is avoided, a waterproof layer is protected against damage, the service life of a building is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, specifically to a drainage structure for a green roof. Background Technology

[0002] Green roofs are a form of landscaping that uses planting soil and plants grown in containers or planting templates to cover the roofs or ceilings of buildings. While often understood as synonymous with roof gardens, green roofs encompass much more than just rooftop courtyards or gardens. Broadly speaking, green roofs refer to artificial greening on the roofs, terraces, balconies, and other surfaces of various buildings and structures. Behind this development lies a significant technological force supporting the advancement of rooftop greening.

[0003] The Chinese Patent Publication No. CN220035926U discloses an invisible drainage structure for a green roof, comprising a rain hopper, a protective cover, and a retaining plate installed on the roof panel. The protective cover is installed above the rain hopper, and a drain grate is installed on the top of the protective cover. This effectively prevents roof debris from clogging the rain hopper without affecting drainage function, ensuring smooth drainage. The retaining plate defines a permeable strip between the planting soil layer and the protective cover. The permeable strip is fluidly connected to the planting soil layer and the drainage cavity inside the protective cover, expanding the permeable area of ​​the roof. A permeable decorative layer is covered above the permeable strip and the drain grate, forming a unified overall landscape with the roof greening. This integrates the drainage structure into the green roof, achieving an organic combination of drainage function and landscape greening.

[0004] In actual use, the above-mentioned device does not have a mechanism for dispersing and quickly draining rainwater inside the permeable strip. If there is a sudden increase in rainfall or the plants become saturated with water, the sand and pebbles inside the permeable strip will obstruct the flow of rainwater, making it difficult to disperse and quickly drain the rainwater, resulting in local water accumulation and damage to the building. Therefore, it is necessary to improve this device. Utility Model Content

[0005] The purpose of this utility model is to provide a drainage outlet structure for a green roof, which disperses rainwater into the rainwater hopper, reduces water flow resistance, facilitates the rapid discharge of rainwater from the rainwater hopper, can promptly remove water from the roof, avoid local water accumulation, protect the waterproof layer from damage, help extend the service life of the building, and reduce maintenance costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a roof drainage structure, comprising a roof layer and two planting areas, wherein the roof layer has a rainwater hopper, and the upper surface of the roof layer is sequentially covered with an insulation layer, a slope-finding layer, a leveling layer, a waterproof layer, and a protective layer from bottom to top, and a flow guiding mechanism is provided between the two planting areas;

[0007] The flow guiding mechanism includes a permeable layer and a drainage cylinder located on the upper surface of the protective layer. The permeable layer is located outside the drainage cylinder. A first drain grate is installed on the upper surface inside the drainage cylinder. A permeable concrete colored surface layer is laid on the top of the drainage cylinder and the top of the permeable layer.

[0008] The permeable layer has multiple evenly distributed guide pipes inside. A second drain grate is installed at the top end of each guide pipe. Multiple evenly distributed through holes are opened on the outer wall of each guide pipe. A support plate located at the bottom of the permeable layer is fixedly connected to the bottom of each pair of guide pipes. A drainage trough communicating with the drainage cylinder is installed at the bottom of the support plate.

[0009] Preferably, the outer wall of the drainage cylinder is provided with a plurality of evenly distributed drainage outlets.

[0010] Preferably, the upper end face of the support plate has multiple drainage holes.

[0011] Preferably, the material in the permeable layer is pebbles.

[0012] Preferably, the rainwater hopper is located below the bottom of the inside of the drainage cylinder, and a protective cover is installed on the upper surface of the rainwater hopper.

[0013] Preferably, one end of the waterproof layer or protective layer extends to the port of the rainwater hopper.

[0014] Preferably, a drainage board is provided between the bottom of the planting area and the protective layer, the right end of the drainage board is opposite to the port of the drainage ditch, and a soil barrier is provided between the planting area and the permeable layer.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, when the rainfall is heavy, some rainwater can flow into the permeable layer through the colored permeable concrete surface. The pebbles, the second drainage grate, and the guide pipe in the permeable layer work together to disperse the rainwater into the drainage channel, which then guides the water flow into the rainwater hopper, reducing water flow resistance and accelerating rainwater discharge.

[0017] Furthermore, some rainwater flowing into the top of the drainage pipe can fall into the drainage pipe through the first grate, and rainwater in the pebbles in the permeable layer can enter the drainage pipe through multiple drainage outlets, thereby further dispersing the rainwater into the drainage pipe. This facilitates the rainwater hopper to quickly drain the rainwater, promptly remove water from the roof, avoid local water accumulation, protect the waterproof layer from damage, help extend the service life of the building, and reduce maintenance costs. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Fig. 1 This is a cross-sectional view of the overall structure of this utility model;

[0020] Fig. 2 This is a structural diagram of the drainage trough of this utility model;

[0021] Fig. 3 This is a structural diagram of the protective cover of this utility model;

[0022] Fig. 4 This is a structural diagram of the guide tube of this utility model.

[0023] The markings in the diagram are as follows: 1. Roof layer; 101. Rainwater hopper; 102. Insulation layer; 103. Slope layer; 104. Leveling layer; 105. Waterproof layer; 106. Protective layer; 107. Planting area; 2. Drainage mechanism; 3. Permeable layer; 4. Drainage pipe; 401. First downspout; 402. Permeable concrete colored surface layer; 403. Drain outlet; 5. Drainage pipe; 501. Through hole; 6. Second downspout; 7. Support plate; 701. Drain hole; 8. Drainage trough; 9. Protective cover. Detailed Implementation

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0026] Please see Figs. 1 to 4 A structure for a green roof drainage outlet includes a roof layer 1 and two planting areas 107. The roof layer 1 has a rainwater hopper 101. The upper surface of the roof layer 1 is covered from bottom to top with an insulation layer 102, a slope-finding layer 103, a leveling layer 104, a waterproof layer 105, and a protective layer 106. A drainage mechanism 2 is provided between the two planting areas 107.

[0027] The diversion mechanism 2 includes a permeable layer 3 and a drainage cylinder 4 located on the upper surface of the protective layer 106. The permeable layer 3 is located on the outside of the drainage cylinder 4. A first drain grate 401 is installed on the upper surface inside the drainage cylinder 4. A permeable concrete colored surface layer 402 is laid on the top of the drainage cylinder 4 and the top of the permeable layer 3.

[0028] The permeable layer 3 has multiple evenly distributed guide pipes 5 inside. A second drain grate 6 is installed at the top end of the guide pipe 5. Multiple evenly distributed through holes 501 are opened on the outer side wall of the guide pipe 5. The bottom of each pair of guide pipes 5 is connected to a support plate 7 located at the bottom of the permeable layer 3. A drainage trough 8 connected to the drainage cylinder 4 is installed at the bottom of the support plate 7.

[0029] In this embodiment: when the rainfall is large, the rainwater falling on the permeable concrete colored surface layer 402 can flow into the permeable layer 3 and the drainage pipe 4 above the permeable concrete colored surface layer 402 respectively. Part of the rainwater flowing into the permeable layer 3 seeps along the pebbles, and the other part flows into the guide pipe 5 through the second drain grate 6. The water that seeps into the pebbles through the through hole 501 flows into the guide pipe 5, so that the guide pipe 5 discharges the rainwater into the drainage trough 8. The other part of the water that seeps into the pebbles flows into the drainage trough 8 through the drain hole 701 on the support plate 7, so that the rainwater is dispersed into the drainage trough 8, and the drainage trough 8 guides the water flow into the rainwater hopper 101, accelerating the discharge of rainwater.

[0030] Rainwater flowing into the top of the drainage cylinder 4 can fall into the drainage cylinder 4 through the first drainage grate 401, and rainwater in the pebbles in the permeable layer 3 can enter the drainage cylinder 4 through multiple drainage outlets 403, thereby further dispersing the rainwater into the drainage cylinder 4, and finally converging the rainwater into the rainwater hopper 101, so that the rainwater hopper 101 can quickly discharge the rainwater.

[0031] As a technical optimization of this utility model, the outer wall of the drainage cylinder 4 is provided with a plurality of evenly distributed drainage outlets 403.

[0032] In this embodiment: by setting multiple drainage outlets 403, water in the permeable layer 3 can enter the interior of the drainage cylinder 4 through the multiple drainage outlets 403.

[0033] As a technical optimization of this utility model, the upper end surface of the support plate 7 is provided with multiple drainage holes 701.

[0034] In this embodiment: by setting multiple drainage holes 701, water in the permeable layer 3 can flow into the interior of the drainage trough 8 through the multiple drainage holes 701.

[0035] As a technical optimization of this utility model, the material inside the permeable layer 3 is pebbles.

[0036] In this embodiment, by setting the material of the permeable layer 3 to pebbles, it has the function of filtering mud and sand in rainwater and facilitating drainage.

[0037] As a technical optimization of this utility model, the rainwater hopper 101 is located below the bottom of the drainage cylinder 4, and a protective cover 9 is installed on the upper surface of the rainwater hopper 101.

[0038] In this embodiment: by setting a protective cover 9, the port of the rainwater hopper 101 can be easily protected.

[0039] As a technical optimization of this utility model, one end of the waterproof layer 105 and the protective layer 106 extends to the port of the rainwater hopper 101.

[0040] In this embodiment: by setting one end of the waterproof layer 105 and the protective layer 106 to extend to the port of the rainwater hopper 101, it is convenient to guide the seeping rainwater into the rainwater hopper 101, so that the rainwater hopper 101 can drain the rainwater away.

[0041] As a technical optimization of this utility model, a drainage board is provided between the bottom of the planting area 107 and the protective layer 106, the right end of the drainage board is opposite to the port of the drainage trough 8, and a soil-separating board is provided between the planting area 107 and the permeable layer 3.

[0042] In this embodiment: by setting the right end of the drainage board to be opposite the port of the drainage trough 8, the rainwater seeping from the planting area 107 can flow into the drainage trough 8 through the drainage board, so that the drainage trough 8 can guide the rainwater.

[0043] Working principle: First, connect one end of the rainwater hopper 101 to the drain pipe. During the use of this device, when the amount of rainwater is large, because the permeable concrete colored surface layer 402 has good permeability, the rainwater falling on the permeable concrete colored surface layer 402 can flow into the permeable layer 3 and the drainage pipe 4 respectively. Part of the rainwater flowing into the permeable layer 3 seeps along the pebbles, and the other part flows into the guide pipe 5 through the second drain grate 6. And through the through hole 501, part of the water that seeps into the pebbles flows into the guide pipe 5, so that the guide pipe 5 discharges the rainwater into the drainage trough 8. And the other part of the water that seeps into the pebbles flows into the drainage trough 8 through the drain hole 701 on the support plate 7, so that the rainwater is dispersed into the drainage trough 8, and the drainage trough 8 guides the water flow into the rainwater hopper 101. And the excess rainwater in the planting area 107 can flow into the drainage trough 8 through the drainage plate.

[0044] Rainwater flowing into the top of the drainage cylinder 4 can fall into the drainage cylinder 4 through the first drain grate 401, and rainwater in the pebbles in the permeable layer 3 can enter the drainage cylinder 4 through multiple drain outlets 403, thereby further dispersing the rainwater into the drainage cylinder 4, and finally converging the rainwater into the rainwater hopper 101, so that the rainwater hopper 101 can quickly discharge the rainwater into the sewer pipe.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for a green roof drainage outlet, comprising a roof layer (1) and two planting areas (107), wherein the roof layer (1) has rainwater hoppers (101), and the upper surface of the roof layer (1) is provided with, from bottom to top, an insulation layer (102), a slope-finding layer (103), a leveling layer (104), a waterproof layer (105), and a protective layer (106), characterized in that: A flow guiding mechanism (2) is provided between the two planting areas (107); The flow guiding mechanism (2) includes a permeable layer (3) and a drainage cylinder (4) located on the upper surface of the protective layer (106). The permeable layer (3) is located on the outside of the drainage cylinder (4). A first drain grate (401) is installed on the upper surface inside the drainage cylinder (4). A permeable concrete colored surface layer (402) is laid on the top of the drainage cylinder (4) and the top of the permeable layer (3). The permeable layer (3) is provided with a plurality of evenly distributed guide pipes (5). A second drain grate (6) is installed at the top end of the guide pipe (5). A plurality of evenly distributed through holes (501) are opened on the outer side wall of the guide pipe (5). A support plate (7) is provided at the bottom of the permeable layer (3) between each pair of the guide pipes (5). A drainage trough (8) communicating with the drainage cylinder (4) is installed at the bottom of the support plate (7).

2. The drainage structure for a green roof according to claim 1, characterized in that: The outer wall of the drainage cylinder (4) is provided with a plurality of evenly distributed drainage outlets (403).

3. The drainage outlet structure for a green roof according to claim 1, characterized in that: The upper end face of the support plate (7) is provided with multiple drainage holes (701).

4. The drainage outlet structure for a green roof according to claim 1, characterized in that: The material inside the permeable layer (3) is pebbles.

5. The drainage structure for a green roof according to claim 1, characterized in that: The rainwater hopper (101) is located below the bottom of the drainage cylinder (4), and a protective cover (9) is installed on the upper surface of the rainwater hopper (101).

6. The drainage structure for a green roof according to claim 1, characterized in that: One end of the waterproof layer (105) and the protective layer (106) extends to the port of the rainwater hopper (101).

7. The drainage outlet structure for a green roof according to claim 1, characterized in that: A drainage board is provided between the bottom of the planting area (107) and the protective layer (106), and the right end of the drainage board is opposite to the port of the drainage ditch (8). A soil barrier is provided between the planting area (107) and the permeable layer (3).

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