2 Characteristics of electromagnetic regulating valve 2.1 Mechanical movement analysis of valve core The electromagnetic regulating valve is mainly composed of wire package, valve core, spring piece and valve port gasket. The working principle of the solenoid regulating valve is: when the solenoid regulating valve has no voltage input, the state of the solenoid regulating valve is shown in Figure (a) in Figure 1; When the voltage V is input to the electromagnetic regulating valve, the valve core moves upward by a certain displacement y under the action of electromagnetic attraction, and then it is in a static state of force balance, as shown in Figure (b) in Figure 1; With the increase of the input voltage V of the solenoid regulating valve, the displacement y of the valve core moving upward will also increase.

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