NINGBO DOTEC produces various pneumatic valves in China for many years. Pneumatic Valve, Pneumatic Solenoid Valve, 5/2 Pneumatic Valve, 3/2 Pneumatic Valve NINGBO DOTEC AUTOMATION CO., LTD , https://www.ningbodotec.com
The most critical principle of a positive pressure oxygen breathing apparatus over the negative pressure oxygen breathing apparatus is that:
The positive pressure oxygen breathing apparatus is always under positive pressure in the respiratory and circulatory system to prevent poisonous gases from entering the respiratory system and causing poisoning. The performance of the oxygen breathing apparatus is directly related to the life safety of the ambulance personnel and the normal rescue work. The positive pressure and negative pressure are relative to the atmospheric pressure of the external environment, that is, the pressure of the closed circuit circulatory system of the respirator is greater than the atmospheric pressure and is positive pressure. , less than atmospheric pressure is negative pressure.
Respirator, the basic principle is the oxygen system and closed circuit breathing system. The positive pressure respirator pressure reducer is divided into high pressure, medium pressure, and low pressure after decompression, and the negative pressure respirator pressure reducer is divided into high pressure and low pressure after decompression.
The key to determining the positive pressure is a loading spring mounted on the diaphragm (or wall of the air bag) of the respiratory module. This loading spring ensures that the entire respirator circulatory system maintains a positive pressure throughout the breathing process. At the same time, automatic compensation is always in the positive pressure range. Regardless of whether the wearer exhales or inhales, the entire circulatory system is in a state of positive pressure, and toxic and harmful gases cannot invade.
The positive pressure oxygen breathing apparatus has a positive air pressure, a low breathing resistance, a cooling box, and a low intake air temperature. When the wearer wears air, the user feels comfortable, the air supply is sufficient, the physical strength is reduced, and the work efficiency is improved.
Options:
1. Pneumatic Solenoid Valve
2. Pneumatic Air Pilot Valve
3. Pneumatic Hand Valve
4. Pneumatic Foot Valve
5. Pneumatic Flow Control Valve
Oxygen breathing apparatus is divided into positive pressure oxygen breathing apparatus and negative pressure oxygen breathing apparatus.