Introduction to Pressure Screens in the Paper Industry
In paper production, the screening process represents a pivotal stage in stock preparation where impurities are filtered out and fibers are separated by pressure screens, ensuring final product quality and integrity.
Understanding the Screening Process
Pressure screens contain a screen basket and rotor that serve as primary filtration agents. These machines feature an inlet for suspension, an outlet for accepted stock, and a discharge for rejected materials and contaminants, orchestrating the separation of desirable fibers from unwanted impurities.
The Mechanism Behind Pressure Screens
Pulp enters the pressure screen's separation chamber tangentially through an inlet pipe. Heavier impurities separate via centrifugal force and settle at the bottom tank for discharge. The pulp then overflows a circular weir plate into the screening area between the screen basket and rotary drum.
Qualified, impurity-free pulp discharges through the screen basket. Unqualified pulp containing impurities continues downward and exits through the discharge pipe.
Advantages of Pressure Screens in the Paper Industry
Reduced Installation Power & Higher Production Capacity
These machines deliver heightened efficiency while minimizing resource consumption, enabling streamlined operations and enhanced productivity.
Inflow Structure for Low Pulsation
The design incorporates an inflow structure engineered to mitigate pulsation, ensuring a smoother workflow and overall production line stability.
Seamless Connection and Minimal Maintenance
Pressure screens require no gaskets and feature polished pulp outlet flanges, facilitating smooth connections. Automatic oil injection devices and seal water detection systems reduce operational safety concerns and maintenance requirements.
Sturdy Construction for Long-Term Reliability
Built with advanced structure for continuous operation, these machines epitomize durability with convenient disassembly features, ensuring minimal downtime.
Other Screening Machines
Inflow Pressure Screen
These screens suit both stock preparation and approach flow systems. The ROTOR design ensures smooth operation without pulsation.
Combo Screen
The Combo Screen efficiently handles light rejects, deflakes stock, and cleans and dewaters fiber simultaneously.
Medium Consistency Screen – Vertical
Featuring a uniquely designed rotor available with hole or slotted basket options, this screen produces minimal positive pulses and elevated negative pulses.
Conclusion
Pressure screens remain guardians of quality and efficiency in the paper industry. For cutting-edge pressure screen technology, connect with Parason Machinery.
