Automatic fuel supply for daily-use fuel tanks
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Question: A pump has three outlet lines that supply oil to three daily-use fuel tanks. How can the pump be made to start automatically when the liquid level in the tanks is low and stop automatically when the level is high? What is the control logic for this? It must be taken into account that the pump stops automatically when the liquid level in one tank is high, but this should not affect the fuel supply to other tanks.
Just add an electromagnetic shut-off valve to the pipeline leading into the fuel tank, with the valve being controlled in conjunction with the fuel tank level.
Electromagnetic valves (cut-off valves will also work, those with feedback) are to be installed on the three branch pipelines, and a level switch is to be added to the tank, with high and low switches. Control the opening and closing of the valve. Then design a control circuit with three feedback elements in series; once the three valves are closed, a relay is used to stop the pump
The feedback from the three shut-off valves should be connected in parallel, right? When any one (or more) of the cut-off valves is opened, a feedback signal is used via an intermediate relay to start the pump; when all three cut-off valves are closed, the pump is stopped.