Advanced Externally Fed Rotating Drum Screen with Self-Cleaning Function

Category： Products
Cleaning System: Automatic Backwash Spray Bars
Filtration Level: Fine Screening up to 0.5mm
Control: PLC Automation Ready
Certification: ISO 9001, CE Certified
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Externally Fed Rotating Drum Screen Description

Externally fed drum screen provides advanced solids removal for wastewater treatment, specifically designed for municipal and industrial facilities. Its durable stainless steel structure and automatic self-cleaning mechanism offer reliable, low-maintenance performance, effectively handling solids separation under demanding conditions.

Influent flows evenly across the rotating drum surface, capturing solids on the exterior screen while filtered water passes through. Continuous drum rotation and internal spray cleaning prevent clogging, delivering uninterrupted operation. The compact, enclosed design minimizes odor, reduces maintenance needs, and optimizes overall treatment efficiency.

Externally Fed Rotating Drum Screen Function

In an externally fed design, wastewater enters a headbox where it is evenly distributed onto the outer surface of the rotating drum. Solids larger than the screen opening size are trapped and gradually conveyed by the drum rotation to a discharge point. Fine particles are efficiently captured, while the liquid filtrate passes through the screen and continues in the treatment process.

Some models also feature a spray bar system for automatic cleaning, maintaining peak filtration performance over extended periods.

Externally Fed Drum Screen Advavtage

High Efficiency: With an optimized screening surface, these rotary drum screens for wastewater treatment deliver superior removal of fine particles, protecting pumps, membranes, and other critical equipment.

Low Maintenance: Robust design and automatic self-cleaning features, such as integrated spray bars, and maintenance of rotary drum screens is simple and infrequent.
Stainless Steel Construction: The stainless steel rotary drum screens resist corrosion and offer long service life, even in harsh environments.
Energy Savings: Designed for continuous operation with minimal energy consumption, making them a smart choice for environmentally conscious operations.
Versatility: Suitable for municipal, industrial, and sludge treatment applications, including primary wastewater treatment and pretreatment screening systems.

Externally Fed Rotating Drum Screen Feature

Feed chamber with incorporated overflow
Designed to allow sewage to cover the entire width of the cylinder
Spillway blade made of wear-resistant material that exerts constant pressure on the cylinder
Backwash by means of a device installed in the screening cylinder
Spacing between 0.25 and 6 mm wedge wire or from 1 to 6 mm perforated.
Worm geared motor and helical gears

Externally Fed Rotating Drum Screen Application

Civil purification plants
Process of Water separation
Treatment of Industrial waste water such as;
1. Paper Mills
2. Food Industry
3. Chemical Industry