In view of the material position monitoring device in the closed container,the transparent flange plate is contaminated by the contamination of the multiphase material in the closed container,which seriously affects the monitoring of the multi-phase material position in the closed container,a multi-phase material level monitoring device for closed container with magnetic drive cleaning device has been designed.By analyzing the flange plate,which is main load-bearing components and optimizing the flange plate,the reliability of cleaning the monitoring window has been ensured,and the basis of re...