H4DV-17-C ction Notes Flender GmbH Flender MD Determini Helical gearboxes H4

Flender/Flender Gear Units/Helical gearboxes H4

ine in sequence is clipping machine. This separates the double oats that, if not separated here, wouldcause problems in the hulling operation. This machine also clips off the ends of oat kernelsto improve the hullability of the oats during the hulling operation. grain separatoror classier is used next, with an air-recycling aspiration system attached. This wouldhelp remove larger, ner, and lighter foreign material from oats. An air-recycling system helps conserve energy. The grain separator is followed by destoner, where stones, mud balls, and other heavy material are removed. From there it is passed on to machines makingseparations on the basis of length, such as, disk separators or indented cylinders, for re-moval of longer and shorter seeds. battery of these machines along with width gradersmay also be used for the removal of poor quality oats and other cereal grains while per-forming the important function of grading the oats. Choosing appropriate pocket shape, indentation, and width size for the disk separator, indented cylinder, and width grader, respectively, highly selective grading of oats and separation of double oats, barley,wheat, and thin oats can be obtained. Grading function can also be accomplished using drum graders which make separa- tions on the basis of width. In the older oat-processing plants grading is also carried out using grading sifter with various screen sizes to sort small, medium, and large oats. 3.3.2 Grading of Oats Once the bulk of foreign material is removed, the next step is to grade the oats on the basis of size into large, medium, and short oats. Optimization of hulling efciency is attained when oats are sorted out by size and sent to their respective hullers where thespeed and load on the huller have been adjusted to suit the specic size of the oats. Smalloats, for instance, interfere not only during hulling operation, they also pose problem during separation from groats following the dehulling operation. This can be acco