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OLDS ELEVATOR™ Publications A Radical Approach to the Vertical Conveyance of Bulk Materials: the OLDS ELEVATOR™
4. Contrasting the OLDS ELEVATOR™ with conventional screw elevators
With the obvious similarities between the OLDS ELEVATOR™ and vertical screw conveyors (both employ the use of screws and cylindrical casings) it is important to identify the differences in how they handle bulk materials. Screw conveyors are ubiquitous in the field of bulk material handling. Their operation has developed little over the 2,200 years since Archimedes discovered the utility of elevating water with an inclined screw. Screws are effective horizontal conveyors and metering feeders for a broad range of bulk materials. However, as screw conveyors are inclined their handling capacity deteriorates and the limit of gravity sliding down the face of the screw flight is quickly reached. At inclinations steeper than 30º more than half of the spectrum of bulk materials requires an alternate elevating technology, as screw conveyors are no longer practical. Where a screw conveyor's performance is best when horizontal, the OLDS ELEVATOR™'s perform best at 90º. OLDS ELEVATOR™ can also be tilted and tests at 45 degrees recorded no reduction in delivery rate. Combined with metering capabilities, this provides a powerful new tool for the process engineer.
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Engineering and Support Free Video Taped Test Materials Handled Performance Features Standard Configurations Test Laboratory OLDS ELEVATOR™ LLC 12 B Park Ave. Hudson, NH 03051 Call 603.882.8899 Fax 603.882.8855 Email us today! OLDS ELEVATOR™ Advantages 1. Olds Elevator Innovative Material Elevation
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