One-way breather valve of dustproof mask

Abstract

The invention discloses a one-way breather valve of a dustproof mask. The breathing valve consists of a base and an upper cover, wherein the base is a basin-shaped plastic member; a column protrudes from the centre of the basin bottom and is provided with a circular hole at the centre; through holes are arranged at four sides of the basin bottom; a groove is arranged at the inner periphery of thebasin edge; the upper cover protrudes inwards; flanges at fours sides of the upper cover are embedded with the groove at the periphery of the base edge; the middle part of the upper cover is providedwith a plurality of support bars crossed and connected with each other and supporting four sides of the upper cover; a through hole is formed between the crossed support bars; a cylinder extends out of the centre of the crossed support bars and inserted in the central circular hole of the column at the centre of the basin bottom; a small hole is drilled at the centre of a silica gel thin film; and the cylinder of the upper cover is inserted in the small hole to rightly seal all through holes at the centre of the upper cover; and when a person exhales, the silica gel thin film is turned over or recovered by the air pressure. The invention has simple structure; in addition, the one-way breather valve of the dustproof mask is arranged on the mask, and the waste air in the body is instantly exhausted from the body on the exhale, so that the exchange of the inner air and the outer air is quickened, the retention time of the exhausted waste air in the mask is shortened, and the invention isbeneficial to the health of the wearer.

Description

technical field [0001] The invention relates to an exhalation valve, in particular to a one-way exhalation valve for a dust mask. Background technique [0002] Existing mouth mask covers organs such as mouth, nose at present, although block the waste gas of outside, the waste gas that human body self discharges can not be discharged from mouth mask very quickly, is unfavorable for the health of mouth mask wearer. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a one-way exhalation valve that can quickly discharge the exhaust gas remaining in the mask. [0004] In order to solve the above technical problems, the present invention provides a one-way exhalation valve for a dust-proof mask. The exhalation valve is composed of a base and an upper cover. The base is a basin-shaped plastic part, and a cylinder protrudes from the center of the basin bottom. There is a round hole in the center of the cylinder, through ho...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing masks cover the mouth, nose and other organs. Although they block the external exhaust gas, the exhaust gas discharged by the human body cannot be discharged from the mask quickly, which is not conducive to the health of the mask wearer.

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