About Bulk Technik
Established in 1988, Bulk Technik is a leading local company specializing in materials handling, including lime slaking, conveying and silo storage. Operating in South Africa and neighboring countries, we excel in design and construction, positioning ourselves among global leaders. As a reliable and service-driven partner, we provide extensive expertise, offering economic solutions to ensure our customers’ sustained success and competitive advantages in materials handling and engineering.
Introduction to Rotary Valves
Bulk Technik offers a diverse range of products, with our primary focus on rotary valves showcased prominently on this website.
Rotary valves are commonly referred to as a rotary feeder, rotary vane feeder or an airlock feeder. This precision-engineered valve precisely doses dry powder or granular products from a storage hopper or chute into a process below. Meticulously machined to minimize air leakage losses through the rotor, the rotary feeder is available in two general types: drop-through and blow-through feeders.
Feeding & Conveying with Drop-Through Rotary Valves
In a drop-through rotary feeder, the product stored above fills the rotor’s pockets. As the rotor turns and a filled pocket reaches the open flanged discharge, the material gracefully descends under gravity into the process below. While suitable for pneumatic conveying, a drop-through type necessitates a feeding tee, enabling the product to seamlessly integrate into the airflow within the conveying system.
Blow-Through Rotary Valve in Pneumatic Conveying Systems
Primarily utilized for pneumatic conveying, the blow-through rotary valve connects pressurized air supply to one end and the conveying line to the other. As the rotor turns, contents under gravity are exposed to the air stream, becoming suspended. In pneumatic conveying, the pressure differential between the underside & above the rotary vane feeder causes air leakage, affecting performance.
Enhance the pneumatic conveying efficiency with a Blow-Through Rotary Valve. It ensures a seamless product integration into airflow, optimizing performance. Moreover, it minimizes the air leakage for superior operational results.
Precision Engineering & Hygienic Design
DMN Westinghouse feeders showcase superior quality with custom-machined tolerances tailored to the product’s temperature, minimizing air leakage. Vent holes facilitate efficient air release, ensuring optimal performance.
DMN Westinghouse’s rotary valves cater to various industries, featuring quick-cleaning options ideal for applications demanding internal hygiene. Specifically beneficial in food and certain chemical industries, ensuring contamination-free processes with removable end plates and easily accessible rotors.
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