SEED AND GRAIN CLEANING |seed and grain cleaning|Oliver Manufacturing Company|specific gravity separator|destoner The Oliver Hi-Cap, Master and Maxi-Cap Gravity Separators are used onany type or variety of seed and grain cleaning process, low germination light seeds, brokens, mechanical damage, insect damage or foreign material. To meet the grower's expectations of high performance seed the modern seedsman must provide product that has been conditioned over a gravity separator. Oliver Manufacturing is the internationally recognized leader in its ability to solve seed and grain cleaning problems with proven fluidized bed technology. Oliver designs and manufacturers a complete line of gravity separators, stoners and fluidized bed dryers. The deck overcover provides the friction that pushes the heavier layers of material up the deck. Therefore, this screen must have a rough surface texture to do that job efficiently. If the screen feels smooth to the touch it is worn out, and needs to be replaced. Generally, mild steel screens will process approximately 1 million pounds of seed and grain cleaning material before they need to be replaced. Coated overcovers will last fivet o seven times longer than mild steel on most products. It is a good idea to check the condition of your overcover every 100 hours of operation time. OLIVER STEELE’S GUIDELINES FOR USE OF SEED AND GRAIN CLEANING SEPARATORS: WHAT GRAVITY SEPARATORS CAN AND CANNOT DO 1 - Seed and grain cleaning particles of the same size but differing slightly in specific gravities can be separated. A common example of this would be the separation of similar size seeds, the lighter of which has been hollowed out by the insect damage or lack of development. 2 - Seed and grain particles of the same specific gravities but differing in the size will be graed according to the size fo the particles. A common example of this would be the elimination of shriveled corn kernels from whole kernels of the same density. 3- Seed and grain particles differing in specific gravities and also differing in size cannot be efficiently separated on a gravity separator. An example of varying sizes and the densities occurs on every ear of corn. Depending on their location on the ear, corn comes in a variety of sizes; small rounds, medium rounds, small flat, medium flats and large flats. Because of growing conditions seed weight varies within a given size range, Often, separation of unsized corn gives less than satisfactory seed and grain cleaning results. |
