CN203768986U - Roof greenbelt rainwater collection and storage system - Google Patents

Abstract

A rooftop green space rainwater collection and storage system, combined with community building greening, using efficient green space rainwater collection and reuse technical measures, to build an energy-saving comprehensive system that can maintain the minimum resource consumption and cost input in the later maintenance management and maximize long-term benefits . It is of great significance to alleviate the shortage of water for greening, save energy and reduce emissions, and build a rich and practical plant landscape for urban buildings. The system has the function of heat preservation in winter and heat insulation in summer for single buildings. Large-scale application can effectively alleviate the urban heat island effect, increase urban greening area, increase air humidity, and beautify the city.

Description

A roof green rainwater storage system

technical field

The utility model relates to a rainwater collection and storage system, in particular to a roof green area rainwater collection and storage system.

Background technique

The use of urban water resources in my country mainly focuses on the development of surface and groundwater resources, and does not pay attention to the utilization of urban rainwater collection and runoff, allowing it to be discharged. On the one hand, it causes waste of water resources, and on the other hand, a large amount of rainwater discharge leads to urban waterlogging, etc. question.

Contents of the invention

In order to alleviate the above problems, the utility model provides a rainwater collection and storage system for green roofs.

A roof green rainwater collection and storage system, which is composed of a green rainwater storage layer, a rainwater delivery riser, an overflow pipe, a control valve, a water storage tank, and a rainwater lift pump, and is characterized in that the greenery rainwater storage layer is located on the top floor of a building One end of the rainwater delivery riser is connected to the lower part of the rainwater collection and storage layer of the green space, and the other end is close to the wall of the building and introduced below the ground, and then divided into two paths, one is connected to the ground sprinkler irrigation pipeline, the other is connected to the reservoir, and one end of the overflow pipe is connected to the green space The upper part of the rainwater storage layer, the other end is close to the wall of the building and led to the ground. The storage tank is located below the ground next to the building. The rainwater lifting pump is located at the bottom of the storage tank. Layers, reservoirs, the joints of ground sprinkler irrigation pipelines and the joints of rainwater lift pumps and ground sprinkler irrigation pipelines.

From top to bottom, the green land rainwater storage layer is: plant layer, matrix layer, filter layer, storage and drainage layer, isolation layer, first waterproof layer and plant root blocking layer, second waterproof layer and plant root blocking layer. Choose plants that are suitable for the harsh environment of the roof and the local climate characteristics to be planted in the plant layer; choose soil as the substrate layer; use glass fiber cloth or non-woven fabric that can both permeate and filter as the filter layer; use traditional ceramsite and pebbles As a storage and drainage layer, after retaining enough water for plant growth, discharge excess filtered rainwater; in order to protect the waterproof layer from the stress caused by freezing, polyethylene film is used as an isolation layer; the first waterproof layer and The plant root blocking layer, the second waterproof layer and the plant root blocking layer adopt the plant root blocking waterproof membrane.

The main function of the rainwater delivery riser is to lead the rainwater collected and filtered by the green rainwater storage layer to the storage tank or connect to the ground sprinkler irrigation pipeline. If there is too much rainwater and the rainwater storage layer of the green space is in a saturated state, the excess rainwater will flow out from the overflow pipe to avoid excessive water accumulation and have a greater impact on the building. The cistern is used to store filtered rainwater. The outer layer of the cistern has protection and insulation materials to alleviate the damage of the cistern from natural environmental factors and prevent the rainwater in the cistern from freezing at low temperature in winter, causing the rainwater to The storage system cannot be used normally. The control valve is to control the open and close state of each pipeline, so as to control the use of rainwater.

The utility model combines the building greening of the residential area, uses efficient green rainwater collection and reuse technical measures, and constructs an energy-saving comprehensive system that can maintain the minimum resource consumption and minimum cost input and maximize long-term benefits in the later maintenance management. It is of great significance to alleviate the shortage of water for greening, save energy and reduce emissions, and build a rich and practical plant landscape for urban buildings. The system has the function of heat preservation in winter and heat insulation in summer for single buildings. Large-scale application can effectively alleviate the urban heat island effect, increase urban green area, increase air humidity, and beautify the city.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Figure 1, an overall schematic diagram of a rainwater storage system for green roofs.

Figure 2, the cross-sectional view of the structure of the rainwater storage layer in the green land.

In Fig. 1, 1. Green land rainwater storage layer, 2. Rainwater delivery riser, 3. Control valve Ⅰ, 4. Overflow pipe, 5. Control valve Ⅱ, 6. Control valve Ⅲ, 7. Control valve Ⅳ, 8 . Rainwater lift pump, 9. Cistern.

In Figure 2, 2. Rainwater delivery riser, 4. Overflow pipe, 10. Plant layer, 11. Matrix layer, 12. Filter layer, 13. Storage and drainage layer, 14. Isolation layer, 15. The first waterproof layer And plant root blocking layer, 16. The second waterproof layer and plant root blocking layer.

Detailed ways

When there is rain in the weather (or excessive water is used for watering plants), the rainfall falls on the green rainwater storage layer (1) and is collected by it, and the rainwater is filtered by the plant layer (10), matrix layer (11) and filter layer (12) After treatment, it reaches the storage and drainage layer (13), and a small part of the rainwater is stored in the storage and drainage layer (13) to provide the necessary water source for the plant layer (10). (2) and control valve II (5) reach the reservoir (9), or connect to the ground sprinkler irrigation pipeline through control valve I (3), rainwater delivery riser (2) and control valve III (6). If the rainfall is too large, the green space rainwater storage layer (1) is in a saturated state, rainwater begins to accumulate on the surface of the green space rainwater storage layer (1), and the accumulated rainwater will be discharged to the surface through the overflow pipe (4).

When there is no rain, the rainwater in the reservoir (9) is connected to the ground sprinkler irrigation pipeline through the rainwater lift pump (8) and the control valve IV (7) for ground sprinkler irrigation, micro-irrigation, and small-scale waterscape creation.

Claims (1)

1. greenery patches, roof rainwater accumulation system, by greenery patches rainwater accumulating layer, rainwater is carried standpipe, bleed off pipe, control valve, reservoir and rainwater lift pump composition, it is characterized in that: greenery patches rainwater accumulating layer is positioned at building top layer, rainwater is carried the bottom of access greenery patches, standpipe one end rainwater accumulating layer, the other end is pressed close to building walls introducing below ground and is divided into two-way, one connection ground, tunnel pipeline of sprinkling irrigation, another road connects reservoir, rainwater accumulating layer top, connection greenery patches, bleed off pipe one end, the other end is close to building walls and is caused ground, reservoir is positioned at the other below ground of building, rainwater lift pump is positioned at reservoir inner bottom part, control valve lays respectively at rainwater and carries standpipe to connect greenery patches rainwater accumulating layer, reservoir, the junction of the junction of ground pipeline of sprinkling irrigation and rainwater lift pump and ground pipeline of sprinkling irrigation.