PM2.5 double-purpose dust protection mask and manufacturing technology thereof

Abstract

The invention discloses a PM2.5 double-purpose dust protection mask and a manufacturing technology of the mask, and belongs to the technical field of occupational health supplies. A pressing type individual dust protection mask comprises a nasal bracket, a tract groove I, an outer cover rotating shaft, a dust blocking filter membrane I, hang lugs or a safety cap connecting piece I, an outer cover, a sealing clamping buckle, a bottom frame and a sealing layer; and the outer edge of the inner side of the nasal bracket and the outer edge of the inner side of the bottom frame are of rough protruding structures. A tract type individual dust protection mask comprises an outer side supporting piece, a nasal inner sealing layer, a right face inner sealing layer, a left face inner sealing layer, a tract groove II, a tract handle, a dust blocking filter membrane II, and hanging lugs or a safety cap connecting part II; and the outer side supporting piece is connected with the nasal inner sealing layer, the right face inner sealing layer and the left face inner sealing layer. According to the mask, a relatively flexible dust protection manner can be provided for workers, in the area with the higher dust concentration, the good dust protection effect is achieved, and in the low dust concentration site, the requirement of workers for the oxygen intake amount is met.

Description

technical field [0001] The invention belongs to the technical field of occupational hygiene products, and in particular relates to a protective mask for high and low concentration dust. Background technique [0002] At present, there are a large number of workers in China who are exposed to various types of dust in the workplace for a long time and at high concentrations, such as silica dust, coal dust, asbestos dust, polyethylene dust, gypsum dust, limestone dust, wood dust, aluminum dust, etc. Dust, hemp dust, welding fume, other dust, etc., the on-site investigation found that the dust concentration in most of the workplaces exceeds the "Occupational Exposure Limits of Hazardous Factors in the Workplace Part I: Chemical Hazardous Factors" (GBZ2.1-2007) The allowable concentration limits of 47 kinds of dust in the air of the specified workplace. [0003] The on-site investigation found that at present, most of the large enterprises have equipped their workers with qualifi...

AI Technical Summary

Problems solved by technology

The first problem is that foreign protective products are designed based on the basic face shape of foreigners, which is poorly adaptable to the face shape of Chinese people. When such individual dust-proof products are used to protect against dust, they all adopt the method of increasing the contact pressure between the product and the human face. Guaranteeing the airtightness of the product will cause most workers to feel uncomfortable when wearing personal dust-proof products; the second problem is that the protective products are designed with the basic face shape of foreigners, which does not conform to the facial structure of Chinese people. The fit is poor, and dust can easily enter the protective equipment from the place where the dustproof equipment is not closely attached to the face, which greatly reduces the dust protection efficiency of the protective equipment; the third problem is that the unit price of disposable protective equipment is high and It is difficult to remove, which makes it difficult for operators to take off or wear individual dust-proof articles for ventilation during a short break during work in a harsh on-site environment.

Sultry heat, high concentration of dust and wearing personal dust-proof products for a long time will inevitably lead to a decrease in the oxygen intake of the workers, and high-intensity physical labor will lead to an increase in the oxygen demand of the workers. maintain mild hypoxia

It is difficult for workers to endure mild hypoxia for a long time under high-intensity physical labor, which affects the enthusiasm of workers to wear personal dust-proof products, which leads to workers not wearing personal dust-proof products in accordance with regulations. main reason

Images