Device for accurately discarding and separating urban initial rainwater

Abstract

The invention discloses a device for accurately discarding and separating urban initial rainwater, comprising a rainwater inlet and a collection opening, wherein the rainwater inlet is formed in an upper part of the device, the collection opening is formed in a middle part of the device, a baffle plate is also arranged inside the device, the top end of the baffle plate is arranged below the collection opening, the bottom of the baffle plate is arranged at a bottom surface in the device, a chamber that is formed by a side wall where the baffle plate is arranged and a side wall where the collection opening is formed is divided into an upper chamber and a lower chamber by a separating plate, a drain hole is formed in the separating plate, a rainwater discarding plate is transversely arranged at a lower part of the baffle plate, and divides a chamber that is formed by opposite side walls of the baffle plate and the collection opening into an upper rainwater accumulating chamber and a lower rainwater discarding chamber, the rainwater discarding chamber is externally connected to a rainwater discarding pipe, a rainwater discarding opening is formed in the rainwater discarding plate, and a valve device is arranged in the device, and is configured to control the opening/closing of the rainwater discarding opening and the drain hole. The device according to the invention has the beneficial effects: the automatic and accurate discarding of initial rainwater and the automatic collection of posterior rainwater can be realized at any place in any amount of rainfall, rainwater can be separated effectively to prevent a pipeline from flowing backward, flood draining safety is ensured, and the device is convenient to repair and maintain.

Description

technical field [0001] The invention relates to the field of urban drainage, in particular to a diversion device used in a rainwater collection system to accurately discard polluted rainwater in the early stage. Background technique [0002] In the past, the idea of ​​​​solving the problem of rainwater drainage in urban construction was to discharge it quickly. After being collected through the storm water outlet, the rainwater was directly discharged into the municipal rainwater pipe network system without any treatment, and finally discharged into natural waters through the system. This treatment method does not consider the collection and reuse of rainwater, which wastes precious natural resources of fresh water. At the same time, it is concluded from relevant literature that urban initial rainwater is a kind of pollutant with high concentration of pollutants, which is directly discharged into the city without treatment. Natural water bodies are an important reason for th...

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Problems solved by technology

When designing the rainwater abandonment value of the initial rainwater abandonment device, because the design amount of rainfall in different cities is different, the initial rainwater abandonment flow is also different, which requires that the rainwater abandonment value of the initial rainwater abandonment device can be adjusted; Also, how to make the abandonment device acc

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