ROTEX® GYRATORY SCREENERS

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 Gyratory 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.

FLOOR MOUNTING The low transmitted forces of the ROTEX counterbalanced drive allow the unit to be floor mounted in properly designed structures where some other types of equipment cannot. Mounting may be directly on the floor or on an elevated structural steel framework, the elevated position permitting drums or other equipment to be located under the machine. ROTEX application engineers can recommend a stand for any specific application.

CABLE SUSPENSION ROTEX Screeners can be cable-suspended from the four corners of the machine, thereby isolating out-of-balance screening forces from the surrounding structure. Accurate counterbalancing of the ROTEX Screener makes this installation option possible. If the existing overhead structure is not suitable for cable suspension, or is structurally unable to support the cable-suspended unit, the ROTEX Gyratory Screener can be suspended from a floor-mounted cable support stand. As with conventional cable suspension, this option effectively isolates the horizontal out-of-balance screening forces, helping to minimize costs for new structures as well as permitting the use of older structures which might not otherwise support cable-suspended equipment.