What is a Rotary Drum Screen?

A rotary drum screen is a mechanical filtration device designed for solid-liquid separation, commonly used in wastewater treatment, food processing, chemical production, and various industrial processes.
It efficiently removes suspended solids, fibers, and particles from liquids through a continuously rotating drum fitted with a fine mesh or perforated plate.

The drum screen provides stable, automatic filtration, low maintenance, and continuous operation, making it ideal for high-capacity production lines.

Role of a Rotary Drum Screen in the Production Line

In a typical production process:

Raw Material → Washing / Separation → Rotary Drum Screen → Filtrate → Next Processing Step

The rotary drum screen acts as a pre-treatment or separation station by:

• Capturing solid particles before further processing;
• Protecting downstream pumps, valves, and filters from clogging;
• Improving the overall efficiency and cleanliness of the production line.

Key Functions of a Rotary Drum Screen

1. Solid-Liquid Separation

Removes suspended solids, fibrous materials, and residues from liquids with high precision.

2. Continuous Automatic Operation

The rotating drum allows 24/7 filtration with self-cleaning function, minimizing downtime.

3. Easy Maintenance

Designed with quick-access covers and modular parts for easy cleaning and inspection.

4. Uniform Screening

Ensures consistent particle removal and stable flow rate throughout the process.

5. Energy Efficiency

Low power consumption and high throughput make it suitable for large-scale industrial applications.

Common Types and Configurations

Structure Type	Drum Material	Mesh Type	Cleaning Method
Open Drum Type	SS304 / SS316L	Wedge Wire	Backwash Spray
Enclosed Type	SS316L	Perforated Plate	Brush + Rinse
Inclined Type	Carbon Steel	Wire Mesh	Rotary Cleaning System

Industry Applications

• Food Processing: Filtration of fruit juice, starch slurry, soy milk, and sauce residues.
• Wastewater Treatment: Removal of solid impurities in municipal and industrial wastewater.
• Pharmaceutical & Chemical: Separation of fine powders and particles from liquids.
• Paper & Pulp Industry: Fiber recovery and process water filtration.
• Aquaculture: Filtering fish pond water and recirculating systems.

Product Advantages

• Continuous and automatic operation with minimal supervision.
• Precision stainless steel mesh for long service life and corrosion resistance.
• Compact design with low energy consumption and stable output.
• Customizable mesh size (from 0.1 mm to 5 mm) to meet various filtration needs.
• Optional integration with pumps, conveyors, and automation systems.

Technical Specifications (Example Models)

Model	Drum Diameter (mm)	Length (mm)	Mesh Size (mm)	Material	Capacity (m³/h)	Application
RDS-600	600	1000	0.3	SS304	5–15	Food, Beverages
RDS-800	800	1200	0.5	SS304	10–25	Wastewater
RDS-1000	1000	1500	1.0	SS316L	20–40	Chemical
RDS-1200	1200	2000	2.0	SS316L	30–60	Pulp, Paper

Conclusion

As a crucial solid-liquid separation device, the Rotary Drum Screen ensures smooth and efficient operation of industrial production lines.
It improves product quality, reduces maintenance costs, and enhances automation levels across multiple industries.

Whether for food, wastewater, or chemical applications, it stands as a reliable and energy-efficient solution for continuous filtration and solid removal.

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