Labyrinth type water-preventing air-permeating valve applied to closed space and water-preventing air-permeating method thereof

Abstract

The invention discloses a labyrinth type water-preventing air-permeating valve applied to a closed space. The labyrinth type water-preventing air-permeating valve comprises a valve main body and an end cover, wherein a hollow column body is arranged on the outer wall surface of the valve main body; the valve main body comprises a bottom surface, a side wall surface, a first-step water blocking structure and a second-step water blocking structure, wherein an opening is formed in the side wall surface; the first-step water blocking structure comprises air ports, step pieces and a first-step center piece, wherein a blocking assembly is arranged on the first-step center piece, a first airflow channel is formed between the blocking assembly and a step surface of the corresponding step piece, and the first airflow channels communicate with the corresponding air ports; the second-step water blocking structure comprises a water storage tank and two water blocking baffle groups; and in addition, the invention further provides a water-preventing and air-permeating method of the labyrinth type water-preventing air-permeating valve. According to the valve, by means of the mechanical sealing principle, the defects of a membrane type sealing valve body are overcome, the first-step water blocking structure, the second-step water blocking structure, an air-permeating hole, the hollow column body and a water-preventing air-permeating assembly are combined to achieve the water-preventing effect and ensure gas exchange between the closed space and the outside, so that the water-preventing andair-permeating performance of the labyrinth type water-preventing air-permeating valve is improved.

Description

technical field [0001] The invention belongs to the technical field of waterproof and breathable valves, and in particular relates to a labyrinth waterproof and breathable valve and a waterproof and breathable method used in confined spaces. Background technique [0002] As the sophistication of electronic components continues to increase, so does their sensitivity to the environment. Communication equipment that often works in the field environment contains a large number of precision electronic components, which are affected by various climatic conditions such as tiny particles, heavy rain, wind, sunlight, and sudden temperature changes in the field environment, and the accuracy of these components will be affected. , or even failure, the existing technology usually uses a sealed casing to seal the components, but when the sealed casing is used, the electronic components will increase the temperature of the casing when the electronic components are working. In case of rai...

AI Technical Summary

Problems solved by technology

However, in some cases, such as cold nights in the temperate zone, moisture frosts (ice). At this time, although the membrane type waterproof and breathable valve blocks the temperature difference and causes water accumulation inside the sealed shell, the frost (ice) or accumulation of water covers On the surface of the membrane type waterproof and breathable valve, it will cause the membrane type waterproof and breathable valve to fail, unable to be waterproof and breathable, and eventually damage the electronic components. In addition, due to the limitation of the material and structure of the membrane type waterproof and breathable valve itself, it is impossible to guarantee the dryness inside the valve body. Due to the inability to handle the liquid entering the valve body, the liquid accumulated in the valve body flows into the sealed casing, causing damage to the electronic components in the casing

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