Iron removal electromagnetic rod and iron removal method

The invention relates to the technical field of iron removal, and discloses an iron removal electromagnetic rod and an iron removal method.The iron removal electromagnetic rod comprises a tubular electromagnetic rod body, the two ends of the electromagnetic rod body are provided with an injection port and a drain outlet respectively, and the two sides of the outer ring wall of the electromagnetic rod body are provided with an input port and an output port respectively; a first valve, a second valve, a third valve and a fourth valve are arranged at the injection port, the drain outlet, the input port and the output port respectively, an air bag layer is evenly arranged on the inner ring wall of the electromagnet rod, a first air nozzle and a second air nozzle which are communicated with the air bag layer are arranged on the outer ring wall of the electromagnet rod, and the first air nozzle is connected with an air conveying pump. When fluid in the electromagnetic iron rod is discharged and the air bag layer ex