How does the HYZ 4 positive pressure oxygen respirator work?

The low-pressure gas in the air bag of Yimei HYZ-4 positive pressure oxygen respirator product passes through the suction cooling device, suction tube, and suction valve to the mask, and the gas exhaled by the person in the mask passes through the exhalation valve, exhalation tube, and cleaning tank to the air bag; As the exhaled air gradually increases, the positive pressure spring is compressed. At the same time, the spring pressure plate position gradually rises. When the pressure in the respiratory system reaches (400 700) Pa, the valve plate of the exhaust valve is ejected by a spring pressure plate.

At this time, the YMJT04 exhaust valve starts to exhaust; When the person's breathing volume changes from the range of (10 50) l min, the breathing pressure is always automatically adjusted by the demand valve and the exhaust valve.

Negative pressure oxygen respirators are also known as negative pressure isolated compressed oxygen respirators. The respiratory system is isolated from the outside world, the instrument forms an internal circulation with the human respiratory system, oxygen is provided by high-pressure gas cylinders, and there are air bags to store the gas when exhaling and inhaling, and the performance is stable and reliable, which is widely used in petroleum, chemical industry, metallurgy, coal, mining, laboratories and other industries (departments), and is worn and used by specially trained people in the toxic and harmful gas environment (ordinary atmospheric pressure) for rescue, accident handling, rescue or operation.

How negative pressure oxygen respirators work.

The air exhaled by the wearer from the lungs enters the purification tank through the mask, tee, exhalation hose and exhalation valve, and the carbon dioxide component in the exhaled air is absorbed by the absorber in the purification tank, and the rest of the gas enters the air bag; In addition, the oxygen stored in the oxygen cylinder enters the air bag through the high-pressure catheter and the pressure reducer, and the gas converges to form an oxygen-containing body, and when the wearer inhales, the oxygen-containing body enters the human lungs from the air bag through the suction valve and the suction hose, so as to complete a breathing cycle. In this cycle, the airflow is always in one direction because the exhalation and suction valves are one-way valves.

Product features of negative pressure oxygen fiber respirator.

The mask is worn with a clear vision, no fogging, and no frosting.

The exhalation and suction hoses are large-section hoses with a soft texture that swings easily with the head.

The dosing wells are adjustable to ensure a stable oxygen supply.

The cooler is external, making it easy to replace blue ice or ice cubes.

The strap and belt are flame retardant and anti-static materials, soft and wear-resistant, and the back is ergonomically designed.

There is a manual drain. There is an advanced exhaust function.

Technical parameters of negative pressure oxygen respirator.

2 Rated working pressure of oxygen cylinder: 20MPashenhua223 Quantitative oxygen supply:. 4l/min

4. Automatic oxygen supply: 80l min

5 Manual oxygen supply: 80l min

6 Automatic supply valve opening pressure: -100 -300pa7 automatic exhaust valve opening pressure: 100 300pa8 pressure: 4 6mpa

9 Dimensions: (excluding hoses, straps, hangers, etc.) 450*370*16010 Respirator mass (excluding accessories and tools): 13kg.

1. Quantitative oxygen supply. The respirator supplies oxygen to the air bag with the oxygen flow rate, which can meet the breathing needs of the wearer at moderate stress response intensity.

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

3. Manual oxygen supply. When there is too much exhaust gas accumulated in the air bag and it needs to be cleared or the automatic supplemental oxygen supply cannot meet the needs or malfunctions, manual supplemental oxygen supply can be used.

Medium coal negative pressure oxygen respirator oxygen supply mode.

1. Quantitative oxygen supply. The oxygen flow rate of the slag suction device supplies oxygen to the air bag, which can meet the breathing balance needs of the wearer under medium 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 supply device automatically supplies oxygen to the Liang Xiao airbag with a flow rate greater than 60L min, and automatically closes when the airbag is full.

3. Manual oxygen supply. When there is too much exhaust gas accumulated in the airbag and it needs to be cleared or Y automatic M J supplement T to supply 0 and 4 oxygen can not meet the needs or failure, manual oxygen supply can be used.