Gas mask

Abstract

The invention provides a gas mask. The gas mask comprises a transparent mask body, a mask framework and a head band. The gas mask is characterized in that a vent port is formed in the upper edge of the mask framework; a detachable filtering module is arranged at the vent port; an isolating device is arranged in the middle of the mask framework, and air ports are formed in the two sides of the isolating device; vent valves are arranged below the air ports; an exhaust hole is formed below the mask framework; and the head band is arranged on the upper portion of the mask framework. According to the gas mask, a traditional mode like the mouth of a wild boar is omitted, and a filter is placed at the front end of the mask instead; air enters the mask from the top end, passes through a valve between the eye portions and the mouth portion and is exhausted through an exhaust valve on the jaw portion, fog is reduced, and the eye portions are not affected. The full-transparent design of the front face of the mask ensures a normal field of view for a user, and the size is reduced.

Description

technical field [0001] The invention relates to a protective appliance, in particular to a gas mask. Background technique [0002] Chemical companies have a variety of chemical equipment and chemical substances. When dealing with various emergencies (running, leaking, dripping, leaking) or equipment maintenance, the staff often face various acidic and alkaline gases. liquid etc. In order to prevent the damage of chemical substances to the staff, especially the protection of the face, it is necessary to be equipped with a gas mask. The structure gas mask of existing full-face mask gas mask mainly is made up of parts such as filter, mask, face screen, exhalation port and headband or net cap. When this gas mask is in use, the cover body will be tightly wrapped around the user's head, which will cause the personnel who wear glasses due to myopia or blurred vision to be unable to use it. When myopia wears it with naked eyes, it may cause inoperability or misoperation due to un...

AI Technical Summary

Problems solved by technology

When this kind of gas mask is in use, the cover will be tightly wrapped around the user's head, which will make it impossible for people who wear glasses due to myopia or deafness to use it.

When myopia wears it with naked eyes, it may cause inoperability or misoperation due to unclear vision; when wearing glasses, the seal will not be tight enough to achieve the sealing effect due to the obstruction of the frame

There is also a half-mask gas mask, but it cannot protect the eyes

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