Plastic Dewatering Machine
The first drying stage of our standard PP / PE film washing line, the dewatering machine can efficiently remove large portions of moisture from the PP / PE film directly after the washing process. Strategically placed after the sink / float separation tank, the dewatering machine uses centrifugal force to spin water outwards while the PP / PE films are contained within.
At the center of the dewatering machine is a long shaft mounted with many paddles spun to nearly 1,000 rotations per minute by an electric motor. Surrounding the paddled shaft is a mesh screen tunnel. As the slurry PP / PE film is fed into the vertical feeder , its instantly thrown outwards against a mesh screen that surrounds the shaft. Water passes through the mesh screen and is collected for recycling while the PP / PE film is continuously thrown and mixed around inside.
The PP / PE film, now partially dried, moves onto the next drying equipment, usually a thermal drying system. Generally, the PP / PE film leaving the dewatering machine will have moisture levels roughly around 20-30%.
For dehydration and drying
An important part of recycling plastics is the dehydration process and subsequent drying. Fangtai Plastic designs and supplies innovative vertical dewatering equipment and drying systems called step dryers.
Residual moisture levels in the range of 0.4 – 0.06 wt% can be achieved for thermoplastic pellets in the original production process of polycarbonate, polyethylene, polyamide, polypropylene and polystyrene. Our engineers can target lower numbers upon request.
Step-by-step removal of clean water from plastic pellets
Contrary to conventional dehydrators or plastic sludge dryers, the stepped dryers designed by Fangtai Plastic are equipped with stepped basket screens and rotors.
The material flow of plastic granules or flakes and water enters the lower part of the classifying dryer and is transported throughout the process by conveying blades. After the first step of separating the splash water, the flow of granular or sheet-like material is accelerated by inertial forces, enabling optimal separation of the residual adhering water. In the final step, the static air pressure in the upper part of the dryer prevents any excess water from draining with the drying material.
High quality dewatering and drying performance for liquids and impurities
Step Basket Screens and Rotors
Automatic cleaning device
High throughput performance
Sophisticated Material Handling
No fan required
Residual moisture content flakes < 1% w/w
Pellet residual moisture < 0.4 – 0.06 w/w
compact design
easy to maintain
low operating cost
If you are interested in our products, please contact us.
