H3-DV-6B flender dx 500 Helical gearbox H3

Flender/Flender Gear Units/Helical gearbox H3

ease. Hullability is inuenced by the following factors: Moisture content of the grain Load on the impact hullerPeripheral speed of the rotorImpact ring material Size of the oats 1. Moisture. The higher the moisture content, the more difcult it is to remove the hulls; however, the risk of creating lot of broken material is minimized. 2. Load. The higher the load, the lower will be the dehulling efciency; that is there will be higher percentage of unhulled grain remaining after the dehullingoperation. 3. Peripheral speed. The higher the peripheral speed the greater is the dehulling efciency; however, the percentage of the broken material would also be higher;also, the impact ring will wear off sooner. 4. Impact ring material. The composition of the material affects the hulling ef- ciency, percentage of broken material creation, and the useful life of the impact 3 Sarkar ring. For instance, ceramic lasts much longer than most material, but its hulling efciency is poor. 5. Size of the oats. The greater the uniformity of the oat grains the better will be the dehulling results. Operationally, the following measures are taken to ensure that optimum performance can be attained at all times: 1. High-quality impact hullers are used with the provision of adjustable speed that can correspond to the hullability of varying types of oat kernel, thereby ensuringoptimum performance at all times. 2. Varying sizes of oats can cause many problems as it will be hard to target proper adjustment, such as, speed and load, to obtain high hulling efciency. Therefore, in large processing plants the oats are graded into two or three sizes,using length separations and width separation, as explained in the earlier section, before being dehulled in separate lines. This allows optimum adjustment in each line. If small oats remain present with large oats, not only does that causehindrance in terms of effective dehulling, but also this leads to problems in effective separation of the dehulled ker