Roof drainage system

Abstract

The invention discloses a roof drainage system comprising a roof, a first fencing body, a second fencing body, a first water-permeable filtering body, a second water-permeable filtering body and a soil covering body. On rainy days, rainwater permeates into the soil covering body at first, and then soil and other impurities included in the rainwater can be well filtered out under the filtering and permeation action of the first water-permeable filtering body and the second water-permeable filtering body. After the filtered rainwater is secondarily filtered by first osmotic drainage portions and second osmotic drainage portions, the soil and other impurities included in the rainwater can be further removed, so that relatively clean rainwater flows into a water collecting cavity and then is discharged into a drainage channel. Thus, the drainage channel can be prevented from being blocked, the fact that excessive rainwater is prevented from accumulating in the soil covering body is ensured, and an ecological system and vegetation survival inside soil as well as roof drainage safety are guaranteed. In addition, even blocking occurs, a high-pressure water flow is used for achieving an omni-directional backwashing action, and then a blocked part can be unchoked. A blockage removing maintenance way is simple, and manpower and material resources are saved.

Description

technical field [0001] The invention relates to the technical field of building drainage, in particular to a roof drainage system. Background technique [0002] In recent years, due to the increase in rainstorms due to abnormal climate changes, floods have occurred in many cities in our country, seriously endangering the safety of people's lives and property. Therefore, the country is vigorously promoting the application of sponge city technology. In the sponge city technology, a landmark technology is the application of green roof drainage system. The conventional method is to build a concrete gutter on the roof, and connect the side of the soil through the pre-buried drainage pipe at the bottom of the gutter to guide the accumulated water to The gutter is discharged through the drainage system. [0003] Due to the characteristics of the green roof, it usually lacks a filtration system. The water discharged from the embedded drain pipe at the bottom of the gutter will inev...

AI Technical Summary

Problems solved by technology

[0003] Due to the characteristics of the green roof, it usually lacks a filtration system, and the water discharged from the embedded drainage pipe at the bottom of the gutter will inevitably be accompanied by a lot of soil and other impurities, which will easily cause the drainage pipe to block

Once the drainage pipe is blocked, the accumulated water will not be able to enter the side of the gutter, and the soil and vegetation will have to be soaked in water, which will adversely affect the ecosystem in the soil and the su

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