Initial rainwater discarding device

Abstract

The invention relates to an initial rainwater discarding device, which consists of a water inlet pipe, a collecting pipe, a primary discarding pipe, a secondary discarding pipe and a box body, wherein the box body is formed by nesting a primary box body, a secondary box body and a third-level box body; the water inlet pipe is connected with the primary box body through a cover plate; an overflowing hole is formed on the side wall of the primary box body; a screen cloth is arranged at the upper end of the overflowing hole; the primary discarding pipe is arranged on the bottom of the primary box body; water flow flows into the secondary box body from the overflowing hole and then flows into the third-level box body; the secondary discarding pipe and the collecting pipe are arranged on the bottom of the third-level box body; and the primary discarding pipe and the secondary discarding pipe are provided with control valves. The initial rainwater discarding device has the advantages of separating initial rainwater with complex pollutants and high pollution level from later-period rainwater effectively by discarding and overflowing twice, and controlling clean rainwater to fulfill the aim of resource recycling, along with simple structure, durability, no damageable electronic equipment, high reliability and convenient maintenance and overhauling.

Description

Technical field: [0001] The invention relates to the technical field of rainwater collection and utilization, in particular to an initial rainwater abandonment device. Background technique: [0002] In the case of global freshwater shortage, rainwater harvesting becomes very necessary. Due to the great difference in the quality of rainfall in different durations during the rainfall process, and being affected by factors such as the atmosphere, building surfaces, and outdoor roads, the concentration of suspended solids and other pollutants in the initial rainfall is much higher than that in the middle and late rainwater. If no rainwater purification treatment is carried out It should not be used directly. In order to reduce the pollutants in the collected rainwater and reduce the difficulty and cost of rainwater utilization, this part of the initial rainwater is usually directly removed, and the subsequent rainwater is collected. [0003] Based on the above reasons, a new t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pre-filter function, simple structure, easy maintenance, can effectively separate the early rainwater with complex pollutants and high pollution degree from the later rainwater, and solve the problem of accurately judging the stop time of rainwater collection, and at the same time An initial rainwater abandonment device that solves the problem of safe and rational utilization of rainwater resources

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