Double Filter Cylinder Screen Changer

The double filter cylinder screen changer comprises a main body, two pistons (each with 1-2 filter cylinder-type screens), a hydraulic station, and other components, forming a complete filtration system. The two pistons operate simultaneously: when one is driven by a hydraulic or mechanical device for screen replacement, the other remains in melt flow. Furthermore, its unique material introduction and exhaust design ensures that screen changes can be performed without stopping the extruder or interrupting the melt flow.

Advantages of Double Filter Cylinder Screen Changers:​

1. Larger Filtration Area: The filtration area is 5–6 times that of a same-sized double piston screen changer, with a maximum filtration capacity of up to 3.5 tons per hour.
2. Uninterrupted Melt Flow During Screen Changes: Its unique double piston and exhaust design enables screen replacement without stopping extruder or interrupting melt flow.
3. Enhanced Plasticization: Compared to plate-type screen changers, its longer flow channel contributes to better plasticization.
4. Efficient Filtration: Continuously filters impurities from the melt, significantly improving processing efficiency.
5. High Durability: Constructed with alloy materials and subjected to nitriding treatment, it features a robust structure, high-temperature resistance, and corrosion resistance—ideal for long-term high-load operation.
6. Strong Adaptability: Suitable for various plastics, rubber, and polymer processing applications, capable of handling melts with different viscosities and temperatures.
7. Automated Design: Adopts an automated system to reduce labor costs.
8. Easy Maintenance: A modular design simplifies maintenance and component replacement.
9. Energy Efficiency & Environmental Friendliness: Reduces waste generation and lowers energy consumption.

Disadvantages of Double Filter Cylinder Screen Changers:​
Compared to plate type screen changers, it has a lower applicable operating pressure.
 

Double Filter Cylinder Screen Changer
Having a large filtration area and high production capacity, it allows screen replacement without stopping the extruder or reducing its working pressure. It can meet the filtration needs of most hot-melt materials, and is particularly suitable for production scenarios with high capacity requirements.

◆ Recycling production lines: suitable for polymer materials such as PP, PE, PET, and PA;
◆ Cast film production lines: suitable for polymer materials such as PET, CPE, PE, and HDPE;
◆ Sheet and plate production lines: suitable for polymer materials such as PP, PE, PET, and ABS;
◆ Packing tape production lines: suitable for polymer materials such as PP and PET;