What are the oxygen supply methods of negative pressure oxygen respirator?

1, quantitative oxygen supply. The respirator supplies oxygen to the airbag with a high oxygen flow rate, which can meet the breathing needs of the wearer under moderate labor intensity.

2. Automatic oxygen supply. When the labor intensity increases and the quantitative oxygen supply cannot meet the needs of the wearer, the automatic oxygen supply device automatically supplies oxygen to the airbag at a flow rate greater than 60L/min, and the airbag is automatically closed when it is full.

3. Manual oxygen supply. When there is too much waste gas accumulated in the airbag, it needs to be removed or automatically supplied with oxygen, which can not meet the needs or fails, manual oxygen supply can be used.

Extended data:

Characteristics of negative pressure oxygen respirator:

1, negative pressure oxygen respirator mask is comfortable to wear, with clear vision and no fog and frost;

2. The breathing and sucking hose is a high-quality hose with large cross section, which is soft and easy to swing with the head;

3, the quantitative hole can be adjusted to ensure stable and safe oxygen supply;

4, the cooler is external, which is convenient for replacing Lan Bing or ice cubes;

5. The suspenders and belts are made of flame-retardant antistatic materials, which are soft and wear-resistant, and the back is ergonomically designed;

6. Manual drainage device; It has advanced exhaust function.

7. The respiratory system of negative pressure oxygen respirator is isolated from the outside world, and the instrument forms internal circulation with the human respiratory system. High-pressure gas cylinders provide oxygen, and airbags store breathing and inhaled gases. Its performance is stable and reliable, and it is widely used in petroleum, chemical industry, metallurgy, coal, mining, laboratory and other industries. Wear it by specially trained personnel when working in emergency rescue, accident treatment, rescue or toxic and harmful gas environment.