Green roof adopting ecological porous fiber cotton for drainage

Abstract

The utility model discloses a green roof adopting ecological porous fiber cotton for drainage, which relates to the technical field of sponge city bioretention facilities and comprises a medium soil layer, an ecological porous fiber cotton water storage layer is covered below the medium soil layer, a plurality of drainage pipelines are pre-buried in the medium soil layer and the ecological porous fiber cotton water storage layer, and the drainage pipelines are communicated with the medium soil layer and the ecological porous fiber cotton water storage layer. A plurality of drainage holes are evenly distributed in the drainage pipeline, and permeable filtering membranes are arranged at the drainage holes. According to the utility model, a plurality of drainage pipelines are arranged in the medium soil layer and the ecological porous fiber cotton water storage layer, so that the water content in the medium soil layer and the ecological porous fiber cotton water storage layer can be increased in heavy rain weather, and under the reference of data provided by the soil moisture sensor, the water content can be controlled to be reduced by controlling the opening of the electromagnetic valve; therefore, excessive rainwater can be quickly drained out, and the phenomenon that the weight of a roof is increased due to accumulated water caused by excessive water content of the roof is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of bioretention facilities for sponge cities, specifically a green roof that uses ecological porous fiber cotton for drainage. Background Technology

[0002] The implementation of sponge city covers multiple aspects such as buildings and communities, roads and pipelines, squares and parks. The types of underlying surfaces are also numerous, including roads, roofs, green spaces, and water surfaces. Among them, roofs account for a considerable part of the underlying surface in urban built-up areas. Carrying out "sponge-ization" construction of roofs can effectively improve the "sponge ratio" of the site.

[0003] The primary method for implementing green roofs on existing buildings is "green roofing." However, the construction of green roofs on existing roofs inevitably increases the load on the original roof due to their own weight, and there is also the risk of roof leakage due to water used for planting. Therefore, the contradiction between the use of green roofs to absorb and purify roof runoff and the load-bearing capacity and waterproofing capacity of the building roof becomes prominent.

[0004] Ecological porous fiber cotton is composed of capillaries with a diameter in the micrometer range. It has a low density, essentially consisting of numerous tiny microtubes interwoven together, exhibiting capillary force. When it comes into contact with liquid, capillary action occurs. Because the density and capillary force of dry soil are greater than those of the porous fiber cotton, both begin to absorb water simultaneously upon contact with moisture, at almost the same rate, eventually reaching a dynamic equilibrium with consistent moisture content. When the soil comes into contact with moisture first, followed by the product contacting saturated soil, excess water in the soil is gradually released into the porous fiber cotton, thus achieving a dynamic equilibrium in moisture content. When both lose moisture naturally under these conditions, the soil's capillary force is greater than that of the porous fiber cotton, causing the soil to continuously absorb water from the porous fiber cotton to achieve moisture balance. The product achieves its functions of water absorption, retention, and drainage through this microscopic natural process. Therefore, this invention proposes a green roof using ecological porous fiber cotton for drainage. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a green roof that uses ecological porous fiber cotton for drainage.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a green roof using ecological porous fiber cotton drainage, comprising a medium soil layer, beneath which lies an ecological porous fiber cotton water storage layer. Multiple drainage pipes are pre-embedded within both the medium soil layer and the ecological porous fiber cotton water storage layer. Multiple drainage holes are evenly distributed on each drainage pipe, and a permeable filter membrane is installed at each drainage hole. One end of each drainage pipe is connected to a main water pipe, and a solenoid valve is installed between the drainage pipes and the main water pipe. A soil moisture sensor is also installed inside the medium soil layer and the ecological porous fiber cotton water storage layer. By installing multiple drainage pipes within these layers, the moisture content increases during heavy rain. Based on data from the soil moisture sensor, the opening of the solenoid valve can be controlled to facilitate the discharge of rainwater from the multiple drainage pipes to the main water pipe. This quickly removes excess rainwater, preventing water accumulation on the roof and thus reducing its weight.

[0009] Preferably, a vent cap is provided at the top of the main water pipe.

[0010] Preferably, a covering layer is provided on top of the medium soil layer, and a vegetation layer is provided on top of the covering layer.

[0011] Preferably, a permeable filter layer is provided between the medium soil layer and the ecological porous fiber cotton water storage layer.

[0012] Preferably, the permeable filter layer is a permeable geotextile, and the permeable filter membrane is also a permeable geotextile.

[0013] Preferably, the device further includes a controller for controlling the switching of the solenoid valve, the controller being electrically connected to a soil moisture sensor.

[0014] Preferably, the bottom of the main water pipe is provided with an outlet, which is connected to the municipal drainage network.

[0015] Beneficial effects:

[0016] Compared with existing technologies, this green roof using eco-friendly porous fiber cotton for drainage has the following advantages:

[0017] This invention involves installing multiple drainage pipes within the soil medium layer and the ecological porous fiber cotton water storage layer. During heavy rain, the moisture content inside these layers increases. Based on data from a soil moisture sensor, the opening of a solenoid valve can be controlled to facilitate the discharge of rainwater from the multiple drainage pipes to the main water pipe. This allows for the rapid removal of excess rainwater, preventing water accumulation on the roof and thus reducing its weight. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the drainage pipe of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the drainage pipe and the main water pipe of this utility model;

[0022] Figure 4 This is a schematic diagram of the connection structure between the main water pipe and the municipal drainage network of this utility model.

[0023] In the picture:

[0024] 1. Medium soil layer; 2. Ecological porous fiber cotton water storage layer; 3. Drainage pipe; 4. Drainage hole; 5. Permeable filter membrane; 6. Main water pipe; 7. Solenoid valve; 8. Soil moisture sensor; 9. Covering layer; 10. Vegetation layer; 11. Permeable filter layer; 12. Controller; 13. Municipal drainage network; 601. Ventilation cap; 602. Outlet. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-4As shown, this utility model provides a technical solution: a green roof using ecological porous fiber cotton for drainage, comprising a medium soil layer 1, an ecological porous fiber cotton water storage layer 2 beneath the medium soil layer 1, multiple drainage pipes 3 pre-embedded inside both the medium soil layer 1 and the ecological porous fiber cotton water storage layer 2, multiple drainage holes 4 evenly distributed on the drainage pipes 3, a water-permeable filter membrane 5 installed at the drainage holes 4, one end of the multiple drainage pipes 3 connected to a main water pipe 6, and a solenoid valve 7 installed between the drainage pipes 3 and the main water pipe 6, the medium soil layer 1 and the ecological porous fiber cotton water storage layer... Inside the structure 2, a soil moisture sensor 8 is installed. Multiple drainage pipes 3 are installed in the soil medium layer 1 and the ecological porous fiber cotton water storage layer 2. When heavy rain occurs, the moisture content inside the soil medium layer 1 and the ecological porous fiber cotton water storage layer 2 will increase. With the data provided by the soil moisture sensor 8, the opening of the solenoid valve 7 can be controlled to facilitate the discharge of rainwater from the multiple drainage pipes 3 to the main water pipe 6. This can quickly discharge excess rainwater and prevent water accumulation on the roof, which would increase the weight of the roof.

[0027] Please refer to the following carefully. Figure 1 and Figure 2 A covering layer 9 is provided on top of the soil medium layer 1, and a vegetation layer 10 is provided on top of the covering layer 9. A permeable filter layer 11 is provided between the soil medium layer 1 and the ecological porous fiber cotton water storage layer 2. The permeable filter layer 11 is a permeable geotextile, and the permeable filter membrane 5 is also a permeable geotextile. An impermeable layer is provided on the bottom and sides of the ecological porous fiber cotton water storage layer 2, and the impermeable layer extends upward to above the vegetation layer 10.

[0028] Please refer to the following carefully. Figure 2 It also includes a controller 12 for controlling the switching of solenoid valves 7, the controller 12 being electrically connected to each solenoid valve, and the controller 12 being electrically connected to soil moisture sensor 8.

[0029] Please refer to the following carefully. Figure 3 and Figure 4 A vent cap 601 is installed at the top of the main water pipe 6, and an outlet 602 is installed at the bottom of the main water pipe 6. The outlet 602 is connected to the municipal drainage network 13.

[0030] Working principle: Multiple drainage pipes 3 are installed in the medium soil layer 1 and the ecological porous fiber cotton water storage layer 2. When heavy rain occurs, the moisture content inside the medium soil layer 1 and the ecological porous fiber cotton water storage layer 2 will increase. With the data reference provided by the soil moisture sensor 8, the opening of the solenoid valve 7 can be controlled to facilitate the discharge of rainwater from the multiple drainage pipes 3 to the main water pipe 6, so as to quickly discharge excess rainwater.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A green roof using ecological porous fiber cotton for drainage, comprising a medium soil layer (1), wherein the medium soil layer (1) is covered by an ecological porous fiber cotton water storage layer (2), characterized in that: Multiple drainage pipes (3) are pre-embedded inside the soil medium layer (1) and the ecological porous fiber cotton water storage layer (2). Multiple drainage holes (4) are evenly distributed on the drainage pipes (3). A water-permeable filter membrane (5) is installed at each drainage hole (4). One end of each drainage pipe (3) is connected to a main water pipe (6). A solenoid valve (7) is installed between the drainage pipes (3) and the main water pipe (6). A soil moisture sensor (8) is installed inside the soil medium layer (1) and the ecological porous fiber cotton water storage layer (2).

2. A green roof using ecological porous fiber cotton for drainage according to claim 1, characterized in that: A vent cap (601) is provided at the top of the main water pipe (6).

3. A green roof using ecological porous fiber cotton for drainage according to claim 1, characterized in that: A cover layer (9) is provided on top of the medium soil layer (1), and a vegetation layer (10) is provided on top of the cover layer (9).

4. A green roof using ecological porous fiber cotton for drainage according to claim 1, characterized in that: A permeable filter layer (11) is provided between the medium soil layer (1) and the ecological porous fiber cotton water storage layer (2).

5. A green roof using ecological porous fiber cotton for drainage according to claim 4, characterized in that: The permeable filter layer (11) is a permeable geotextile, and the permeable filter membrane (5) is also a permeable geotextile.

6. A green roof using ecological porous fiber cotton for drainage according to claim 1, characterized in that: It also includes a controller (12) for controlling the switching of the solenoid valve (7), which is also electrically connected to the soil moisture sensor (8).

7. A green roof using ecological porous fiber cotton for drainage according to claim 1, characterized in that: The bottom of the main water pipe (6) is provided with an outlet (602), which is connected to the municipal drainage network (13).

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