Sieve Bend Screens are also referred to as DSM Screens. These screens are mainly used for liquid / solid separation and manufactured to suit a wide range of industries such as:
Sugar Processing. Cow muck filter sreen
Pulp & Paper.
Coal Mining & Quarrying.
Mineral Processing.
Cement.
Industrial & Urban Effluent Treatment.
Sieve Bend Screens are also used as a pre-filter in urban & industrial waste treatment plants to improve the performance of the clarifier by drastically reducing the load. Sieve Bend Screens are the solution to many dewatering, sizing, and wastewater cleanup problems.
Sieve Bend Screens consist of a concave curved profile wire screen mounted in a frame with the screen openings perpendicular to the flow. A curved screen has greater capacity than a flat screen due to forces exerted as material flows against the curved surface.
Offered in looped wire, both straight and deep arch design, as well as resistance welded wedge wire in both 304 and 316 stainless steel.
The effective range of slot openings for a gravity-fed cross flow sieve bend screen is
generally considered to be .015" to 1/8". The installation angle of a sieve bend screen is
usually 50 to 60 degrees from the horizon.
Sieve bends offer many advantages:
more fine fibre removal
better flow rate
original solutions to reduce spare parts cost
special alloys for improved wear life
customised surface finishing
SIEVE BEND DIMENSIONS AND END BARS
WEDGE WIRE CONSTRUCTION
WIRE REF 50 80 100 120 150
WIRE WIDTH MM 0,5 0,76 1 1,2 1,5
ROD TYPE C20 ou C21
ROD SPACING 17 ou 9 mm
OPEN AREA
Dependant upon the wire and slot chosen, the sieve will provide varied open area in relation to the potential flow rate. Mechanical strength may also be a consideration.
SURFACE FINISHING
Sieve surfaces proposed:
Tilted wire: low cost, for high wear situations can be inverted and re-used.
Polished : to be able to improve fine fibre removal, the wire surface can be ground and polished.
Electro-polished : a premium surface which reduces surface roughness and can assist in fine fibre separation.
CONTROL
A very high standard of equipment is dedicated to slot and wire control.
