What is a Mechanical Cleaned Screen?
A Mechanical Cleaned Screen is an automated solid-liquid separation device used in wastewater or industrial effluent treatment. Its primary function is to intercept and remove larger suspended solids, floating debris, or particulate matter (such as branches, plastics, hair, fibers, etc.) from the water flow, protecting downstream treatment facilities from clogging or damage.
Key Features & Working Principle
- Automated Cleaning
- Uses motor-driven mechanical components (e.g., rakes, brushes, or rotating arms) to automatically remove trapped debris, replacing manual cleaning and improving efficiency.
- Typically operates on a timer or differential water level control for intermittent or continuous cleaning.
- Basic Structure
- Screen Bars: Parallel metal or plastic bars with adjustable gaps (e.g., 5–50 mm).
- Cleaning Mechanism: Such as rotating rakes, step-type scrapers, or belts to lift debris.
- Drive Unit: Motor, gear reducer, and other power systems.
- Control System: Often PLC-controlled for full automation.
- Workflow
Wastewater flows through the screen bars → Debris is trapped → Mechanical device scrapes/rakes the debris → Debris is conveyed to a collection bin → Screened water proceeds to the next treatment stage.
Main Types
- Rotary Drum Screen: Continuous cleaning via a rotating rake mechanism.
- Step Screen: Moves debris upward in stages using stepped plates.
- Cable-Driven Screen: Uses a cable-pulled rake for debris removal.
Applications
- Wastewater Treatment Plants: Pre-treatment phase to protect pumps and biological processes.
- Industrial Effluent Treatment: Removes residues in food, paper, or textile industries.
- Stormwater Systems: Prevents pipe blockages.
Advantages
- High Efficiency: Reduces labor costs, ideal for large-scale operations.
- Durability: Corrosion-resistant materials (e.g., stainless steel) for harsh environments.
- Customizable: Adjustable gap sizes and dimensions based on flow rate and debris type.
Contact us now for a tailored solution.
Julie
Email: sales@filtrationchina.com
Mobile / WA / WeChat: +86 159 2865 0174
