Vacuum breaker for preventing siphon generation

Abstract

The invention relates to a vacuum breaker for preventing siphon generation. The vacuum breaker comprises an upper connection pipe, a middle connection pipe, a lower connection pipe and a rubber ball, wherein the upper connection pipe, the middle connection pipe and the lower connection pipe are successively connected from the top to bottom so as to form a ventilation channel; the upper end of the lower connection pipe is provided with an open baffle plate; the lower end of the lower connection pipe is provided with a pipe for preventing siphon; the rubber ball is disposed in the middle connection pipe; and the rubber ball is tightly fitted to the inner tube of the upper connection pipe so as to seal the ventilation channel. Compared with a conventional vacuum breaker, the vacuum breaker can break vacuum state in an aerated pipe when a blower fan is shutdown suddenly or stopped by accidents and prevent a sewage siphon backwater phenomenon from happening.

Description

technical field [0001] The invention relates to an auxiliary device of sewage treatment equipment, in particular to a vacuum breaking device used to prevent siphoning of aeration pipes during sewage treatment. Background technique [0002] In the process of human life and production activities, a large amount of domestic sewage and industrial wastewater will inevitably be generated. With the rapid development of society, a large number of pollutants are discharged into the water body without proper treatment, causing serious pollution of the water environment. In recent years, national and local The government has invested a lot of money in the pollution control of the water environment. Among them, biochemical treatment technology is one of the most important means of domestic sewage and organic industrial wastewater treatment. It has the advantages of stable treatment effect and low operating cost and is widely used. Aerobic biochemical treatment is a treatment technology ...

AI Technical Summary

Problems solved by technology

[0003] In the sewage treatment process, there are strict requirements on the laying height of the aeration pipeline used for oxygen supply. The general specification requires 0.7 meters above the water surface, but it is difficult to meet the specification requirements in many harsh conditions, such as buried sewage treatment stations, residential buildings Due to the requirements of the overall landscape, the water reuse project in the community and the sewage treatment equipment in the basement are often buried underground, covered with ground or greening, or the treatment equipment is installed in the basement, so the vertical space is narrow and limited, and the aeration pipeline The distance from the highest point to the water surface of the biochemical pool is small. When the fan is turned off or suddenly fails, the check valve at the outlet of the fan is far away from the biochemical pool, and often due to problems such as check sealing performance, it cannot fundamentally solve the siphon of the pipeline. Occurs, in severe cases, the water in the biochemical pool will flow from the pipeline, into the fan or even into the machine room due to siphon, causing the indoor to overflow

Therefore, preventing the occurrence of siphon is an effective way to solve the backflow of pool water, but there is a lack of corresponding products on the market

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