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FRAMING AND REINFORCEMENT.
Wedge wire easily lends itself to a variety of
Screen Panel Constructions. Many different side finishes are
available, some of which are given below:
Cross
rods riveted at both ends
Side angle.
Single side flat.
Spaced double side flats.
Side rubber with ferrules.
The screens are reinforced
with single reinforcing flat, double reinforcing flat and combination
of single and double reinforcing flats welded to end flats.
However framings
should be as per fitment design in the deck. Customers are required
to specify framing pattern with the order.
Special screens
can be developed for customized applications not covered by
the methods mentioned above.
WELDING
:
A further method
of strengthening a wedge wire screen panels, in addition to
framing and reinforcements, against transverse bending is to
put a run of weld along the bottom side of the loops. The weld
run may be continuous along the whole length of the cross rod
or skip or staggared welding may be employed.
SPACING
LUGS :
In special cases
involving side loading (Cross feed) on fine aperture wedge wire,
spacing lugs are introduced to give lateral support at points
between the loops and shorten the unsupported span to maintain
accuracy of the aperture.
TYPES OF SCREENS
1. Flat
Panels
Flat Panels are the
most widely used type of Wedge Wire Screens mainly in the mineral
processing both for stationery as well as vibratory decks. Flat
panels manufactured by GUJARAT WEDGE WIRE SCREENS LIMITED are
most dependable for effective sizing or classifying as they
have accurate bar spacing from as low as 0. 0 1 mm to 4.5mm
at interval of 0. 0 1 mm. Because of Looped construction they
probably have the highest strength for any particular size and
are self supporting and do not require support for long distances.
The panels are either
continuously or intermittently welded on the lower side of loop
to provide complete rigidity to the panels thus becoming very
effective in transmitting the vibrations without mechanical
failures.
The panels can be
made with any type of fitment as per the requirement of the
customers and for particular machines i.e. the side bar can
be of Mild Steel or Stainless Steel square bar or of good quality
square rubber, rubber strips, hook strips etc.
2.
Curved Screens / Sieve Bends & Cylinders
In addition to flat
panels, wedge wires can be readily made up into full cylinders
and segments of cylinders. In most cases, the cross rods lie
along the circumference and the profile wires lie parallel to
the axis. Occasionally, this arrangement is reversed.
3.
Centrifuge Baskets
Very high efficiency
Baskets are made from Looped Wedge Wires in Conical shape, Cylindrical
shape and in double Cylindrical shape i.e. Pusher type centrifuge.
The wedge wire baskets have clear advantage of very high filtration
efficiency, longer life and accurate aperture over any other
Conventional screen baskets. Conical and Cylindrical baskets
can be tailor made to suit the customer requirement and maximum
efficiency.
4.
Rotary Wedge Wire Screens
GUJARAT WEDGE WIRE
SCREENS LIMITED has developed Rotary screens complete with side
flanges and support/ drive drums of Stainless Steel/ Mild Steel
mainly for Sugar and other Chemical plants to achieve very efficient
filtration. Our rotary screens have very .high strength coupled
with very high open area and rigid construction.
5.
Run Down Screens
GUJARAT WEDGE WIRE
SCREENS has developed run down screens (D.S.M. type) complete
with box and curved wedge wire screens to suit particular requirements
of the customer in Sugar, Paper and Pulp, Water treatment and
Chemical industry
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