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What is a flow profile?
Agitators generate movement through rotation. The particles of the agitated substances are transported in a certain way and move through the container in patterns. These patterns are generated, not exclusively, but significantly, by the shape, structure, number and size of the agitating elements. These flow patterns of the agitating elements are called flow profiles.
There are generally three different flow profiles: axial, radial and tangential.
Axially conveying agitators:
Axially conveying agitators first move the mix towards the bottom from where it is conveyed outwards towards the container wall, upwards along the wall to the surface and then back inwards towards the agitator shaft and agitator.
Examples: Hollow body stirrers, propellers, inclined blade stirrers, spiral stirrers
Radial conveying agitators:
Radial agitators move the mix towards the container wall. There, the mix splits in two directions, i.e. upwards and downwards. The flow is then deflected inwards from the base and the surface and reaches the axis of rotation with the agitator shaft and agitating element again.
Examples: Disc agitator, blade agitator, turbine agitator
Tangentially conveying agitators:
Tangentially conveying agitators generate a movement around the agitator. With axially or radially conveying agitators, tangential conveying always plays a role.
Examples: Anchor stirrer, blade stirrer
Combinations of axial and radial conveying directions are also possible, such as with the crossbeam agitator.
