Dynamic Optimization Method of High-speed Solenoid Valve Parameters

The high-speed solenoid valve is the core component of the cotton foreign fiber machine, and its dynamic response characteristics of high-speed air flow at the inlet and outlet are the key to determine the accuracy of foreign fiber strike. In order to improve the dynamic response performance of high-speed solenoid valve under variable working conditions, based on the electromagnetic action mechanism of solenoid valve, the parameter analysis model of high-speed solenoid valve for outlet pressure optimization is established in COMSOL. Taking the inlet pressure and driving voltage of solenoid valve as the system optimization variables, the high-speed response law of outlet pressure rise lag time and outlet pressure change is obtained. The simulation result shows that when the driving voltage of solenoid valve changes from 21V to 27V, the lag time of outlet pressure rise decreases by 57.8%. When the inlet pressure increases from 2 bar to 7 bar, the lag time of outlet pressure rise decreases by 48.14% and the change rate of inlet and outlet differential pressure decreases by 8.4%. The dynamic optimization test system of high-speed solenoid valve parameters is built to verify the simulation results, and the change trend consistent with the simulation results is obtained.