In the sifting zone the material passes along a cylindrical screen aided by 5 rotating single row brushes or beaters which sweep the material through the screen.
The material is separated into throughs and overs with the particle size separation depending on the aperture of the screen. Particles too large to pass through the screen, are called overs, pass along the screen until they are rejected into the overs container.
Particles passing through the screen are generally the desired product but the sifter can be changed if required, to reject fines from product.
Rotary sifters can be installed directly into the pneumatic conveying line or into any process system with a metered feed. Separation of products as fine as 0.25mm can be achieved with a Fresco rotary sifter.
As material is assisted by the brushes to pass through the screen, products, which are high in fat, or smear easily, are ideally suited to rotary sifting.
Standard Features of Rotary Sifters:
Pulley and vee belt drive Safety guarding on the drive
Quick removable screw and brush set
Rear access hatch with O ring seal
Solid stub shaft with interlocking drive squares
Easily removable screen
Sealed overs container
Minimal external ledges
Lip type shaft seals
No internal nuts or bolts
Heavy duty self aligning bearings
Fully welded construction
5 single row nylon brushes double folded and stapled
End weir plate
Safety Features of Rotary Sifters:
Full guarding on the drive
Operation and maintenance manuals
Rotary Sifters Materials of Construction:
304 Stainless steel
316 Stainless steel
Other Options Available:
General Details of Rotary Sifters:
Abrasion resistance screen wipers
Sanitary or industrial finish
Air purge seals
Side access doors
Fresco Systems Australasia | Material Handling Equipment Specialists
Fresco Systems is dedicated to the design, manufacture and installation of Bulk Materials Handling and Processing Equipment,including Bulk Bag Unloaders, Bulk Bag Fillers, Flexible Conveyors, Mobile Flexible Conveyors, Pneumatic Conveying, Bag Dumps, Screw Conyeors plus more. Fresco Systems Australasia offers single items through to turn-key projects engineered and manufactured in-house.
Offices in Auckland, Melbourne and Sydney provide local support throughout the Australasian region with personnel dedicated to customer needs, offering support in sales, project engineering and installation.
A comprehensive range of Fresco-designed and manufactured equipment supported by international technology and supply agreements ensures our customers receive the latest proven technology.
Our flexible, broad-based Auckland manufacturing facility ensures ruggedly constructed, quality assured, timely delivered products compliant with Australian and New Zealand standards.