Hydraulic Double Plate Screen Changer
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The hydraulic double plate screen changer is installed on pelletizing extruders for continuous melt filtration. It uses two symmetrically arranged filter plates that work alternately. While one plate is being changed, the other remains in operation. So the screen can be replaced without stopping the line and interrupting the production. This type of screen changer is suitable for melt filtration in various plastic pelletizing processes. The pellet consistency and overall product quality is improved considerably as the impurities from the melt are removed efficiently.
Specifications
| Model | Filter Plate (Num.) | Single Plate Filter Area (mm) | Dimensions (mm) | Drive Mode | Weight (kg) |
| 2 | 300×300 | 450×800×1800 | Hydraulic | 700 | |
| 2 | 350×350 | 350×700×1600 | Hydraulic | 800 | |
| 2 | 400×400 | 300×500×1500 | Hydraulic | 1000 | |
| 2 | 450×450 | 500×900×2000 | Hydraulic | 1500 | |
| 2 | 500×500 | 600×1000×2200 | Hydraulic | 2000 |
Features
- A venting structure reduces melt fluctuation in the flow channel during screen replacement. Material flow remains steady, without strand breakage or material overflow.
- Multiple heating rods are installed inside the unit, allowing the filter to maintain fast and even heating.
- A pressure sensor can be added to monitor die-head pressure in real time, supporting stable operation during filtration.
How does a double-plate filter support continuous production?
How does a double-plate filter support continuous production?
The two filter plates work alternately. While one plate is being changed, the other continues filtering, so extrusion can keep running without material interruption.
What helps keep extrusion stable during screen changes?
What helps keep extrusion stable during screen changes?
A venting structure inside the filter reduces melt fluctuation during screen replacement. This keeps material flow smooth and extrusion more stable.