DEWATERING SCREEN
INTRODUCTION
ADVANTAGES
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.
SIMPLE MAINTENANCE
FLEXIBLITY
Screens are frequently manufactured in various grades of stainless steel for the chemical industry and protected by special painting systems for severe conditions in the mining industry.
Specify your particular requirements, or enquire about the range of features, accessories, painting systems and materials of construction currently available.
VIBRATORY MOTOR
A very generous holding-down bolt design is incorporated. A common complaint in the past has often been that vibratory motors tended to come loose.
When two vibratory motors of the same frequency are fixed to a rigid common base, which is freely suspended, or supported and run in opposite directions to each other, they automatically synchronise to produce a straight line motion. When this motion is applied to a screen, the result is a horizontal action screen suitable for screening, conveying and dewatering of a large variety of products in limited headroom situations.
FEATURES
1. Individually Replaceable Cross Members
Instead of the old type of fabricated screen decks, all STAR TRACE screens
now incorporate a unique bolted deck arrangement. This means that when
wear occurs and deck replacement become necessary, only the worn sections
are replaced. This is far easier than stripping the entire screen and
handling large, heavy fabricated frames. When polyurethane panels are
to be fitted to screens up to and including 1 200 mm in width, the panels
are located directly into the individually replaceable cross members.
The panel and cross member, by direct impingement of the material being
screened, is prevented. On larger screens, the cross members can be rubber-lined
for protection.
2. Angle Runner System for polyurethane Modular Units.
One of the most common complaints with conventional frames for polyurethane
panels is the premature wear of the pinholes in the deck, with resultant
loosening of the panels. On screens over 1200 mm in width, easily replaceable
angle runners are provided to secure the polyurethane panels. With wear,
only those runners affected need be replaced, thus reducing costs and
downtime.
3. Flat Bar Runner System for Woven Wire Decks As in the angle runner
system for polyurethane decks, the flat bar stringers are bolted to the
cross members, resulting in an easy to maintain deck arrangement.
4. Automatic Alignment of Tensioning Bolts for side Tensioned woven wire
Decks
The illustration show clearly the simplicity of this device. The swivel
half cups automatically align the tensing bolts to the exact angle to
accommodate various wire thicknesses.
5. Built-in, Lined Feed Boxes and Discharge Lips The simplicity of the design of these built in items ensures that feed boxes and discharge lips cannot come loose.
6. Stress Relieving
The entire welded fabrication is stress relieved to ensure that all residual
welding stresses are removed.
7. Screening Surface
The screens can be fitted with a variety of screening surfaces, such as
punched plate, tensioned woven wire, polyurethane or rubber mats, plug-in
polyurethane panels, or wedge wire panels
DEWATERING SCREEN Model - A
By mounting the entire drive mechanism on the screen the following equipment is made redundant: external drive motor, motor support structure, V-belts or Cardon shaft drive connections, oscillator timing gears, and snubbers for protecting the drive components during start-up and shut-down.
Designed for either dry or4 wet operation, these machines give outstanding service in product sizing, degritting, medium-recovery, trash removal and desliming applications. Screen sizes range from 300 X 900 mm to 3000 X 9000 mm in single and multi-deck configurations. Deck materials include perforated plate, woven wire mesh, polyurethane, rubber and wedge-wire.
Accessories include dust enclosures, integral spray-pipes, and sub-frames to further isolate the screen supports from transmitted vibration loads.
Non-standerd screen sizes are manufactured to order and screens can be supplied in stainless steel and 3CR12.
DEWATERING SCREEN Model - B
DEWATERING SCREEN Model - C
Specifically designed for operation in product dewatering applications, Star Trace Dewatering Screens are providing the same benefits in wet-processing plants as the as the Horizontal Screens have given since 1977
AS Dewatering Screens are normally operated at 2 - 50 upward inclination, Star Trace Dewatering screens feature supplementary drain panels in the back and side plates, to facilitate the removal of free water.
1. A 900 x 2700 mm Dewatering screens with polyurethane deck panels and wedge wire drainage panels, driven by two vibratory motors,
2. Detail of the feed end of a dewatering screen showing the sloped feed
section and polyurethane deck panels
