Siphon roof drainage system

Abstract

The invention discloses a siphon roof drainage system which comprises multiple rainwater hoppers, a suspension pipe and a vertical pipe. The multiple rainwater hoppers are communicated with the horizontal suspension pipe through connecting pipes respectively, and a water outlet end of the suspension pipe is connected with a water inlet end of the vertical pipe; a first buffer plate, a second buffer plate and a third buffer plate which are each of a circular ring structure are arranged on the inner wall of the middle lower part of the vertical pipe in sequence from top to bottom, and the inner diameters of the circular rings of the first buffer plate, the second buffer plate and the third buffer plate are sequentially reduced; a water outlet of the vertical pipe is of a horn-shaped structure. The siphon roof drainage system can reduce the excess pressure and flow velocity of the water outlet of the vertical pipe in the system, a higher impact caused by rainwater with the larger flow velocity to a building foundation is prevented, and the situation that due to the fact that air enters the rainwater hoppers, the drainage efficiency of the system is affected is prevented.

Description

technical field [0001] The invention relates to a siphon drainage system, in particular to a siphon drainage system on the roof. Background technique [0002] At present, there are two main ways to drain rainwater on the roof: one is the traditional gravity rainwater drainage system. The effect of gravity goes down the standpipe; this way of drainage is inefficient, requires a large number of pipes, the diameter of the pipes is large, and a slope of 1%-3% is required, and the installation is also complicated. The other is the siphon rainwater drainage system. In the initial stage of rainfall, when the depth of rainwater on the roof is relatively shallow, the rainwater still uses the principle of gravity to drain the rainwater. When the rainfall increases and the water level on the roof reaches a certain height, the rainwater The bucket will automatically cut off the air, thereby generating a siphon, and the drainage system will be transformed into an efficient drainage syst...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention proposes a siphonic roof drainage system, which solves the problem that the excess pressure and flow velocity of the water outlet of the standpipe in the system are too large, which will cause a large impact on the building foundation and also affect the standpipe. The service life; the air will enter the rainwater bucket, which will affect the technical problem of the drainage efficiency of the system

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