Breather valve for mask

Abstract

The invention discloses a breather valve for a mask. The breather valve comprises a valve cover, a membrane and a mounting base. The mounting base comprises an inner clamping plate, and an inner ring table is arranged on the upper surface of the inner clamping plate. A guiding column is arranged in the center of a lower through hole, a plurality of connecting rods are arranged between the outer surface of the guiding column and the inner surface of the lower through hole and annularly distributed on the outer surface of the guiding column so as to support and fix the guiding column, and air outlet channels are formed between the adjacent connecting rods. A through hole is formed in the middle of the membrane, and the guiding column is sleeved with the membrane which can slide along the guiding column so as to control opening and closing of the air outlet channels. The valve cover comprises a circular outer clamping plate with the middle provided with an upper through hole, a cylindrical outer ring table which stretches upwards is arranged on the outer clamping plate and surrounds the upper through hole, a sealing plate for sealing the upper through hole is fixedly mounted on the top of the outer ring table, and air outlets are formed in the side portion of the outer ring table. An external thread is arranged on the outer surface of the inner ring table, and an internal thread matched with the external thread of the inner ring table is arranged on the inner surface of the upper through hole of the outer clamping plate.

Description

technical field [0001] The invention relates to a breathing valve for a mask. Background technique [0002] In winter, the temperature is low, the air is dry, and there are many dust and bacteria in the air. If you breathe this air for a long time, it is easy to cause the weak patients and patients with chronic bronchitis to be infected with respiratory diseases. Will wear a mask. Wearing a mask on the mouth and nose can filter the air entering the mouth and nose to prevent harmful gases, odors, and droplets from entering and exiting the wearer's mouth and nose. Masks are mostly made of gauze. Currently there are special PM2.5 masks, but this Although masks can effectively filter dust and bacteria, they are generally disposable and need to be replaced after a period of use. Moreover, this type of mask is not suitable for people who need to wear glasses. The temperature of the air is relatively high. Due to wearing a mask, the exhaled gas cannot be discharged in time, and p...

AI Technical Summary

Problems solved by technology

Wearing a mask on the mouth and nose can filter the air entering the mouth and nose to prevent harmful gases, odors, and droplets from entering and exiting the wearer's mouth and nose. Masks are mostly made of gauze. Currently there are special PM2.5 masks, but this Although masks can effectively filter dust and bacteria, they are generally disposable and need to be replaced after a period of use. Moreover, this type of mask is not suitable for people who need to wear glasses. The temperature of the air is rel

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