Externally Fed Rotary Drum Strainers

More Information

Schlueter Safgard Externally Fed Rotary Drum Strainers:

Introduction and Design Elements:

• Safgard Rotary Drum Strainer is an advancement in design and state of the art technology. Design engineered with a minimum of parts for high mechanical reliability and service life.
• Economic benefits provide savings in product, time and labor.

Each RDS contains a cylindrical strainer drum, headbox, frame/chassis, solids discharge assembly and chute, CIP internal spray system, and drive system to rotate the strainer drum.

• The strainer drum is constructed of helical wound stainless steel wedgewire.
• This ensures a non-binding, drain free, self-cleaning surface easily cleaned in place for maximum sanitary operation.
• The wedgewire strainer can be easily interchanged with alternate clearance strainers involving minimal mechanical adjustments.

Benefits:

• Improved Product Recovery
• Improved Liquid Recovery / Reuse
• Cleanup Process Effluent
• Remove Solids, Sludges, and Surface Debris
• Improve Process Operation / Performance
• Reduce Sewerage Requirements and Surcharges
• Increased Production Efficiency

Operation:

Process or wastewater liquid is gravity-fed or pumped onto a slowly rotating wedgewire drum. Solids, sludges and scums larger than the wire spacings are retained on the drum surface and scraped off by a solids discharge blade.

The liquid filtrate cascades downward through the strainer, back-flushing the wire spacings.

Accessory Equipment is available for your complete system.

Rotary Drum Straining units can be furnished with other Schlueter Safgard products to provide complete separation, sanitation, recovery and disposal systems.

Engineering Features:

• Headbox and Frame/Chassis made of Heavy-duty Type 304 Stainless Steel with 2-B finish for maximum corrosion resistance and durability. Welds ground and blast clean.
• Separated solids, scums, sludges and dewatered slurries are removed with a Solids Discharge Scraper Blade constructed of material compatible with the operating environment.
• Drive Systems available for electric, hydraulic and pneumatic.
• Simple, rugged design for reliability and trouble-free operation.
• Overall unit design allows for easy disassembly, inspection and cleaning.
• Modular and compact for easy installation, maintenance, and service.
• Available in different models and sizes for a wide range of applications and conditions.
• Unit designs can be altered to exact customer requirements.
• Special flumes, transitions, solids, collection devices, etc., can be provided for a complete separation system.

Additional Options for Externally Fed Rotary Drum Strainers:

• Enclosed Bottom with specified outlet connection, complete with tubular legs and adjustable ball feet.
• Overflow Trough– Installed in the head-bar with specified outlet connection.
• Chassis CIP Spray Bar – Installed under the head-bar to spray clean the chassis.
• Headbox Cover constructed of 14 ga. Type 304 Stainless Steel complete with lift-off cover.
• “Sanitary” Rotary Drum Strainer designs available from Schlueter that meets USDA Sanitation design requirements.

Product Charts

Sizing selection:
Determined by application, flow rate, solids load process characteristics and technical criteria established through experience. All design aspects of the application must be considered to determine model selection.

Flow Capacities:
RDS flow capacities are based on selection criteria above, and design parameters of the standard units. The sizing reference chart is for reference only. Flow rates handled by each model can vary.

Accessories for Safgard Externally Fed Rotary Drum Strainers:

Information on Sanitary USDA Approved Externally Fed RDS’s:

A Safgard “Sanitary” Rotary Drum Strainer is also available from Schlueter that meets USDA Sanitation design requirements of the Food, Dairy, Poultry, Meat and Process related industries. For Externally Fed Sanitary varieties, reach out and ask about Models SMRDS-101SS.