Basic information of HY4 positive pressure oxygen respirator

In design, we absorbed the characteristics of similar products at home and abroad, and produced a positive pressure oxygen respirator with the smallest volume, lightest weight, compact structure, high safety, good protective performance, comfortable wearing, simple operation, convenient maintenance and low price, which was highly praised by authoritative departments and users.

Safety of HY4 positive pressure oxygen respirator:

Reliable connection system between gas cylinder valve and pressure reducer, overpressure relief system of pressure reducer; The pipeline is connected by quick connector, which has good sealing performance and convenient disassembly; Streamlined carbon dioxide filtration system makes the carbon dioxide in exhaled gas more fully absorbed. Because the air pressure in the breathing circuit is slightly higher than the atmospheric pressure, users are effectively protected from external toxic and harmful gases.

Breathing comfort of HY4 positive pressure oxygen respirator;

In order to reduce the temperature of inhaled gas and reduce the physiological burden of users, Lan Bing or ice cubes are used as the cooling device, and a manual drainage system is added.

Comfort of HY4 positive pressure oxygen respirator;

The back hanging system designed according to the principle of ergonomics: the improvement of structure (small volume) and weight (8kg of the whole machine) ensures the freedom of movement and reduces the burden on the body. The buffer belt ensures the safety of the respirator during transportation and use, and the user can put it on and off quickly.

HY4 positive pressure oxygen respirator is easy to maintain;

1. It can be disassembled, repaired and maintained without tools.

2. Innovative switchgear

3. BG4 (full face mask, half face mask, breathing hose, tee, etc.) can be completely replaced. )

Working principle of HY4 positive pressure oxygen respirator;

1. The breathing gas circulates in the closed-circuit breathing system, and the carbon dioxide in the exhaled gas is absorbed by the CO2 absorbent in the clean tank. Oxygen in the oxygen cylinder is replenished to the respiratory system in the following ways.

2. When the oxygen consumption is low, it is supplied through the quantitative supply valve (quantitative hole).

3. When the oxygen consumption is high, it is replenished through an automatic replenishment valve or a manual replenishment valve, and the breathing gas is inhaled into the human body after passing through the cooling tank.

4. The whole respiratory system is in a positive pressure state, which can prevent toxic pollutants from entering the respiratory system.

5. In order to reduce the temperature of inhaled gas and reduce the fatigue of users, the cooling medium is installed in the cooling box to ensure a comfortable inhalation temperature.

6. The safety alarm system adopts mechanical alarm and is equipped with chest pressure gauge, flow limiter and safety valve. The system is simple and novel in structure and safe and reliable in use. When the high-pressure oxygen cylinder is opened, an alarm sound can be heard, indicating that the instrument has started to work. The pressure gauge on the chest can continuously display the pressure in the oxygen cylinder. When the pressure in the oxygen cylinder reaches the residual pressure alarm pressure (5 1 MPa), the alarm will sound for 30 ~ 60s at a sound level greater than 70dB to remind users that there is still the maximum oxygen consumption of 1 hour under moderate labor intensity, and they should be prepared to leave the site.

7. Manual drainage system can reduce the resistance of breathing pipe, and users can open the drainage system according to their own needs to eliminate excess water and breathing gas.