The small diameter of the conical whitening rotor is placed at the top, right underneath feeding section while the big diameter is placed at the bottom, before the outlet section. The product is conveyed to the machine by a vertical feeding pipeline. A conical distributor within the round inlet bin devides the product uniformly to the feeding worm which feeds the product into the whitening chamber. The counterpressure disc which is adjustable connected by three springs in the outlet section causes an uniform filling ratio and uniform pressure within the entire working chamber. This ensures a gentle and uniform whitening of the product.
Air cools the product during the whitening procedure and supports the discharge of the bran.
The bran is removed by a separate pneumatic bran aspiration system.