Overflow device for water tank

Abstract

The invention puts forward an overflow device for a water tank. The overflow device comprises a connecting pipe, a rotating part hinged with the connecting pipe, a mounting plate connected with the rotating part and a nanofiber membrane arranged on the mounting plate, and the mounting plate is provided with a plurality of through holes. According to the overflow device for the water tank, when water in the water tank overflows, the mounting plate rotates, the function of overflow is realized, when the water in the water tank does not overflow, the mounting plate rotates to be closed, at the moment, the water, insects and sundries outside cannot pass through the nanofiber membrane, but air can pass through, antibacteria, breathability and insect prevention are effectively realized, the functions of breathing and ventilation are achieved, the problem that an existing overflow pipe cannot have insect prevention or dust prevention function at the same time is solved, and the water qualitysafety of a secondary water supply water tank can be effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of water tank sealing devices, in particular to a water tank overflow device. Background technique [0002] As the water storage part of the secondary water supply, the water tank (pool) plays an important role in ensuring the safety of the residents' water supply, water supply capacity and ensuring the water demand of users. The piping and accessories of the water tank (pool) include manholes, ventilation pipes, vent pipes and overflow pipes, etc. Among them, the manholes, ventilation pipes, and vent pipes all have effective measures to prevent external pollution, while the overflow pipes are There is a risk of contamination by foreign substances. The overflow pipe needs to drain excess water in an organized way, and needs to connect the inside and outside of the water tank (pool), so it is extremely vulnerable to external pollution. The "Code for Design of Water Supply and Drainage for Buildings" (GB 500...

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Problems solved by technology

[0003] Although the "Code for Design of Water Supply and Drainage for Buildings" stipulates that the overflow pipe needs to have anti-biological measures, it does not give a clear method

The existing overflow pipe anti-biological method is mainly to install an insect-proof cover at the outlet of the overflow pipe, but due to the difficulty of construction, it is often not adopted in many projects, and water pollution cannot be avoided

Moreover, if the total opening area of ​​the insect-proof net is too large, the anti-biological effect cannot be achieved; if it is too small, the effective water-passing area will be reduced, resulting in a reduction in drainage capacity, which cannot ensure smooth overflow, and the overflow effect of the overflow pipe also be weakened

In addition, even if a suitable total opening area is adopted, since the mesh is directly connected to the atmosphere, bacteria and viruses carried by dust in the air cannot be blocked, and the safety requirements of the secondary water supply cannot be met.

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