Working principle of double-column melt screen changer of extruder

When the double-column screen changer of the extruder is working, the two filters work at the same time. When it is necessary to change the screen, the hydraulic station can be started to perform the screen changing action. When replacing the filter, one screen works, one screen is replaced, and the two screens interact. Replace the screen, through the material introduction and exhaust device, the air in the flow channel is eliminated to achieve the screen replacement without stopping the machine, no material leakage, no interruption of material flow, small material pressure fluctuation, small impact on production, and good continuity of production requirements.