STAR TRACE Screen Separator is a unique particle size gradeable separator designed for greater capacity per metre square of screening area & over size material discharge with relatively much less percentage fines than other screening machines.

MAJOR USER INDUSTRIES
• Mineral processing Pharmaceutical
• Ceramic Animal Feed
• Food & Beverages Effluent & Waste
• Abrasive Industries water treatment.

WORKING PRINICPLE
The top weight on the motor shaft rotates in a plane close to the centre of the mass of assembly. Rotation of the top eccentric weight creates vibration in the horizontal plane which causes material to move across the screen cloth to periphery. Increasing the top eccentric mass, increases the horizontal throw, causing oversize material to discharge at a faster rate. The bottom eccentric weight rotates below the centre of mass, creating tilt on the screen, giving vibration in vertical & tangential planes. Increasing the vertical component of motion, which promotes turn over of material on the screen surface helping maximum quantity of under size material to pass through the screen. The vertical motion also minimizes blinding of screen by “near size” particles. The tangential component of motion is controlled by the angle of lead given to bottom weights with relation to top weight. Variation in lead angle controlled the spiral pattern of material travel over the screen cloth. Speed & flow pattern of material travel over the screen cloth can be set by the operator for maximum throughout & screening efficiency for any screen able product- wet or dry, coarse or fine, heavy or light, hot or cold. Typical material passes rapidly through the screen during its travel to the periphery. The over size material get continuously discharged through a tangential outlet.

Whilst enjoying immense popularity for many years on small horizontal and inclined screens, STAR TRACE is the first company in the world to perfect this simple drive arrangement on large horizontal and inclined screens. This single development has resulted in tremendous advantages as far as reduced maintenance, compactness and simplicity are concerned. Besides the simplicity of the drive, many other features have been incorporated to provide a machine which is specifically designed for heavy duty applications, long life, and low operating and maintenance costs, at a competitive price. The standard range of screens is presented later in the brochure, and these are normally available on short delivery.

ADVANTAGES
The advantages of STAR TRACE’s Horizontal Vibrating Screens is that use of the following equipment has now been rendered unnecessary:

• External drive, with vee-belts or cardan shafts.
• Oilbath oscillators, with synchronising gears and oil leaks.
• Motor support stand, or overhead structure for motor support.
• Snubbers - the screen-mounted drive has eliminated the need for snubbers to reduce damage to vee-belts and external motors during the large oscillations that normally occur during stopping.
• Bearing failure is limited to the bearing itself. Particles from a failed bearing cannot circulate in an oilbath and cause possible damage to other bearings and synchronising gears.
• Campactness - screens can be positioned very closely with a minimum of space wastage.
• A vibrator motor needing reconditioning can easily be exchanged for a standby unit, with a minimum of downtime.
• Due to the absence of gears and vee-belts, the units use less power than conventional drives.