The unclean grains are fed into the pre-cleaner chamber and distributed evenly at the bottom of the pre-cleaner cone by means of baffle (KF 12) or rotor (KF 20/60). The blower then creates an upward-moving air stream which picks up lighter fines and pulls them into the blower. The blower discharges the fines through a pipeline to the desired location. The clean crop exits the pre-cleaner through the bottom outlet hopper.
The KF series offers various pre-cleaner models depending on required capacities and space available. The best location for these aspirators depends on the individual conveying system. They may be used in conjunction with a bucket elevator, auger system or pneumatic air system. The use of Kongskilde piping bends and clamping components means easy assembly in new or existing systems. The system is easily adjusted to allow for different crops and capacities.
The construction of the pre-cleaner provides many options for integration in a grain plant. We recommend that the grain cleaner is installed in such a way that it can clean the grain both before filling it into storage and after emptying the storage.