Breathing mask with filtering and purifying functions

Abstract

The invention discloses a breathing mask with filtering and purifying functions. The breathing mask comprises a face guard and a canister. The face guard comprises a guard body, eye windows, an interphone, a breathing valve and a fastener. The breathing mask is characterized by further comprising a double-layer exhalation valve or a multi-layer exhalation valve, and the double-layer exhalation valve or the multi-layer exhalation valve is composed of two or more exhalation valve blocks which are connected and combined in series; grids are arranged between the exhalation valve blocks as well as between the exhalation valve blocks and the guard body; an air inlet is formed in the bottom of the guard body; the air inlet is connected with the canister through an air guiding pipe; the canister comprises a first adsorption assembly, a catalyze assembly and a second adsorption assembly which are stacked in the front-back direction. By means of catalysts, benzene, methylbenzene, xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde and acrolein in the air in a building are removed till the concentration is below 0.01 milligram / m<3>, and meanwhile the content of microorganisms in recycled air is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to a breathing mask with filtering and purification functions. Background technique [0002] As personal protective equipment, gas masks are used to provide effective protection for personnel's respiratory organs, eyes and facial skin. The mask is composed of a mask, an airway and a canister. The mask can be directly connected to the canister or the canister, which is called a direct connection; or the airway is connected to the canister and the canister, which is called a catheter. Mode. Gas masks can choose various types of canisters according to the protection requirements, and are used in chemical, warehouse, scientific research, and various toxic and harmful working environments. [0003] A common gas mask consists of a face shield and a canister (or filter element). The mask includes parts such as a cover body, an eye window, a communicator, a breathing valve, and ...

AI Technical Summary

Problems solved by technology

For example, in the papermaking industry, there will be a lot of dust in the working environment, as well as fiber rot and various polluting gases produced by the papermaking process. However, the gas masks used only have the function of filtering, and do not have the function of filtering and eliminating harmful gases. , will damage the health of workers