[Q&A] What are the types of gas masks?

The gas mask is a protective product that protects the human body from respiratory safety. The mask is used to closely fit the human face so as to effectively isolate the toxic environment from the respiratory tract. The use of gas masks is very extensive, but there are many people who are still unclear about the types of gas masks when they choose. Today, DEHSM Xiaobian uses this article to share with you.

The types of gas masks can be divided into filter gas masks and isolated gas masks.

1. Filter gas mask:

1.1 Category: Half mask, full face mask, smoke mask

The difference between the half mask gas mask and the full mask gas mask: the gas mask body is different, the half mask gas mask can only do respiratory protection, and the full mask gas mask can also protect the entire face (including eyes and face) while protecting against the respiratory tract. Play a protective role.

1.2 Composition:

Generally consists of a mask body, a filter box (and a filter cotton), and some special filter gas mask bodies are connected to a filter cartridge by a catheter.

1.3 use of the environment:

The requirements are harsh, the oxygen concentration in the operating environment is greater than 18%, the ambient temperature is -30- +45°C, and use in an environment with a low oxygen concentration can easily cause suffocation.

1.4 anti-virus principle:

Filter-type gas masks mainly use filter boxes (and filter cotton) to filter toxic gases and dust particles.

1.5 Application areas:

Full-face masks and half-masks are mainly used for painting, pesticide spraying, ink printing, and chemical industries; and smoke-proof gas masks are mostly used for emergency escape in the event of a fire. (Extended reading: Precautions for Purchasing Filter Respirator)

Second, isolated gas masks:

2.1 Classification: Long tube respirator, air respirator

The long tube respirator is divided into two types: self-priming and electric powered respirator. The use of the mask is not limited by the degree of environmental pollution (extended reading: basic knowledge of long tube respirator); air respirator, also known as gas mask Or a fire mask, which uses compressed air as a source of air.

The difference between the long tube respirator and the air respirator: The former can continuously supply fresh air to the user; the latter's supply time is determined by the capacity of the configured cylinder, which can generally be used for 45 to 60 minutes.

2.2 Composition:

The long tube respirator consists of a full face mask, a waistband, a long tube, and a blower; the air respirator consists of a face mask, a gas bottle, a shoulder strap, an alarm whistle, a pressure gauge, a cylinder valve, a pressure reducer, a backrest, and a supply valve.

2.3 use of the environment:

It is often used in environments with insufficient oxygen concentration or when no toxic substances are known.

2.4 anti-virus principle:

The long tube respirator uses a long tube to connect the clean air to the user; the air respirator uses the compressed air in the gas bottle to supply the user.

2.5 Applications:

Isolated gas masks are used in narrow, oxygen-deficient spaces, but there are differences. For example, air respirators are mostly used in firefighting for firefighters or rescue personnel to carry out firefighting, emergency rescue and rescue work in a variety of environments such as smoke, poisonous gas, steam or oxygen. The long tube respirator requires a long-time working environment for cleaning waste fertilizer tanks and tanks.

After everyone is familiar with the type of gas mask frame structure, interested friends can learn which gas mask brand is good and what factors affect the price of the gas mask.