How to choose a screen changer for a plastic extruder?
There are many types of screen changers for plastic extruders, each with its own unique features. Manual screen changers are known for their compact size and easy installation. Although they require a brief shutdown during screen changes, they are ideal for applications with low continuous production requirements or small-scale test lines. Single-plate screen changers, whether single-station or multi-station (such as dual-station or quad-station), feature a simple structure and high cost-effectiveness, making them widely applicable to various production needs.
Double-plate screen changers, equipped with two filter plates, enable non-stop screen changing, significantly improving production efficiency, and are particularly suitable for production lines with high requirements for production continuity. Column-type screen changers, including single-column and double-column types, can accommodate filters of various shapes, such as circular, rectangular, or curved. Among these, double-column screen changers ensure greater production continuity.
Backflush screen changers, with their unique online backflush function, effectively extend filter screen lifespan while enabling screen changes without stopping production. Belt-type automatic screen changers, with high automation and easy operation, are an ideal choice for efficient production.
When selecting the appropriate screen changer, it is essential to consider material properties, extruder type, and process requirements comprehensively. Material properties determine the required filtration precision and filtration method; extruder type dictates the need for compatible screen changers of different types and specifications; and process requirements, such as production continuity and product quality stability, are also critical factors influencing screen changer selection.
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