ROTEX® SCREENERS are self-contained - Northland Engineering Sales, Inc.

ROTEX® SCREENERS are self-contained production screening machines for separating dry materials according to particle size. Through the unique gyratory-reciprocating motion of the near-horizontal screen surface, combined with a positive screen mesh cleaning system, ROTEX provides unusually high efficiency and capacity - all the result of continuing development for hundreds of applications throughout scores of industries. Numerous innovative design features provide ROTEX users with unparalleled performance, ease of operation, and durability.

ROTEX® SCREENERS are installed in thousands of locations worldwide, serving a broad range of industries. Screener models can range from one to five screen surfaces, for separations with openings from 1/2" to 325 mesh. Innovative design features provide ROTEX users with unparalleled performance, ease of operation, and durability.

HOW IT WORKS

GYRATORY MOTION RAPIDLY DISTRIBUTES,
STRATIFIES, AND SEPARATES
The unique gyratory motion imparts a combination of actions to the material as it passes along the screen surface. It begins with a horizontal circular motion at the feed end, gradually diminishing along the length of the machine to an elliptical path, and finally to an approximate straight-line motion at the discharge end. There is no vertical component to this motion – thus keeping the material in constant contact with the screen surface.

1. CIRCULAR MOTION AT FEED END The gyratory motion at the feed end of the machine immediately spreads the material across the full width of the screen surface to maximize screen utilization – even though the feed is from a single point.

At the same time, this motion stratifies the material, causing the fines to sink down against the screen surface. The particles that are appreciably smaller than the openings quickly pass through at this part of the screen.

2. CHANGING TO ELLIPTICAL MOTION AT CENTER As the circular motion diminishes into an elliptical path, the gentle near-horizontal motion causes the fine particles closer in size to the screen mesh – the near-size particles – to fall through the mesh openings.

3. STRAIGHT-LINE MOTION AT DISCHARGE END The nearly linear reciprocating motion at the discharge end of the ROTEX Screener removes those particles closest in size to the mesh openings while gently conveying the oversize material off the screen. In addition, the unique ROTEX ability to advance or retard material flow at the discharge end allows further fine tuning to achieve the most efficient and accurate motion for the application.