downward flow

Downward flow refers to the directed movement of product particles or fluid components from top to bottom within a process chamber. In vertically mounted mixing systems it is a central component of flow guidance.

In mixing technology, downward flow often arises in the area of the central mixing shaft or along special tool geometries. The product is first conveyed upward and then, due to gravity or guided, moved back downward. This creates a closed flow loop. The downward flow ensures that the product particles repeatedly pass through different zones of the mixing chamber. This contributes significantly to three-dimensional rearrangement and to the homogenization of the entire mixture. Dead zones and stagnant regions are reduced.

In combination with a helical upward flow at the vessel periphery, a space-encompassing flow is created. This is typical of high-performance vertical mixing systems. It improves mixing quality, mass transfer, and heat transfer.