A screw conveyor or auger conveyor is a mechanism that uses a rotating helical screw blade, called a flighting usually within a tube, to move granular materials. They are used in many bulk handling industries. Screw conveyors in modern industry are often used horizontally or at a slight incline as an efficient way to move semi-solid materials, including food waste, wood chips, aggregates, cereal grains, animal feed, boiler ash, meat and bone meal, municipal solid waste, and many others.
Applications
Bulk material handling
Industrial equipment
Agricultural machinery
Grain production
Chemical Industry
There are two parallel screw shafts in the trough. During the operation, the two shafts rotates by the two engaged gears, making the material travel axially, and such the material being conveyed out. The double screw conveyor features in full closure while in operation.
Applications
1.Are compact and easily adapted to congested locations.
2.Can transfer more material than single screw conveyor for same distance.
3.For bulky materials jamming of screws does not occur.
4. Can be used to control the flow of material in processing.
5.Are versatile and can be employed in horizontal, inclined and vertical installations
A ribbon blender consists of a U-shaped horizontal trough containing a double helical ribbon agitator that rotates within. The agitatorâ??s shaft is positioned in the center of the trough and has welded spokes on which the helical ribbons (also known as spirals) are welded. Since the ribbon agitator consists of a set of inner and outer helical ribbons, it is referred to as a â??double" helical ribbon agitator. The gap between the ribbonâ??s outer edge and the internal wall of the container ranges from 3 to 6 mm depending on the application.
Blending large volumes of dry solids.
Dry powder to wet phase mixing.
Mixing of bulk drugs, chemicals, and cosmetic powders.
Dry Blending of capsule formulations.
Lubrication of dry granules in large quantity.
Heating, cooling, and drying of materials.
Coating solid particles with small amounts of liquids to produce formulations.
