Operating Process of Industrial Oxygen Generators

　　The operating sequence of the industrial oxygen generator is controlled by a programmable logic controller, which in turn controls five 2/5-way pilot solenoid valves. These solenoid valves then independently manage the opening and closing of ten pneumatic pipeline valves to complete the process. The five 2/5-way pilot solenoid valves separately control the left adsorption, pressure equalization, and right adsorption phases. The timing sequences for these three phases have already been programmed into the PLC.

　　In the event of a power outage, the pilot air from all five two-position five-way pilot solenoid valves is routed to the pneumatic pipeline valve, causing it to close and remain silent. When the process is in the left adsorption mode, the solenoid valve controlling the left adsorption is energized, routing the pilot air to the left adsorption inlet valve, the left adsorption product gas valve, and the right vent valve opening, thereby opening these three valves and completing the left adsorption cycle while simultaneously desorbing the right adsorption tower.

　　When the process is in the equalization phase, the solenoid valve that controls equalization is energized while all other valves remain closed; pilot air is routed to the opening of the equalization valve, causing it to open and thereby completing the equalization process. When the process enters the right adsorption phase, the solenoid valve controlling right adsorption is energized, and pilot air is directed to the openings of the right adsorption inlet valve, the right adsorption product gas valve, and the left vent valve, causing these three valves to open and thus completing the right adsorption process while simultaneously desorbing the left adsorption tower. During each process stage, all valves except those that are required to be open must remain closed.