Three Main Factor in Oil Yield

Material And Contains of Oil
Material quality is key factor determines oil extraction rate. (material varieties/moisture/purity).such as soybean( contains 15.5%—22.7% oil ),peanut(Rate of kernel in peanut hull is about 65%—75%. Rate of oil in kernel is 40%—51%.),sesame(oil ratio is up to 45%—63%. It contains 43% oleic acid and 43% linoleic acid),oil palm fruit (fresh pulp contains 45%—50% oil) and palm kernel contains 48%—55%)),corn germ( 70% nutrient ),rapeseed (contains 33%—48% oil.),cottonseed (Cottonseed contains 15%—25% oil, and cotton kernel contains 28%—39% oil.),tea seed (contains 30%—40% oil)

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Oil Press Machine  
Choose suitable different oil extraction machine according to different raw materials. Three points should be taken into consideration. Machine pressure(the more pressure, the high oil yield); Dreg-ness amount and residue oil rate in the oil cake . And there are two kinds of screw oil presser machine screw oil presses and automatic screw oil press ,you will have a litter understanding about it.

Screw oil presses are more suitable for medium-sized and small-sized grain and cooking oil processing factories or specialized households. They can press particle oil materials and powder oil materials, such as rapeseeds, cotton seeds, soy beans, peanuts and sesames etc. And the machine mainly uses the change of pressing screw pitch size and screw thread depth to reduce the volume between screw pitch and pressing chamber, the oil materials get stronger pressure gradually, thus the oil can be squeezed. Meanwhile, the high pressure in the chamber and the strong friction generates high temperature, which can improve the oil yield. With several models with a crushing capacity range from 1 to 18 tons per day

Automatic screw oil press is a compound machine which can squeeze and filter oil at the same time. It is of compact structure, convenient operation and technical design. It can process various oil crops including peanuts, soy beans, tea seeds and cottonseeds etc. High oil yield. This series of oil expeller is of scientific design which improves lubrication between oil seeds and worm, making seeds cell decompose in a repaid way.  Electronic temperature control and automatic heating device. This oil press machine adopts physical pressing craft, improving oil quality and oil yield. and equipped with vacuum filtering device.

Oil Extraction Craft
Different oil crops have diverse attributes. For example, rapeseed is of medium stickiness and oil content, so it will produce much resistance in pressing

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process. While peanut kernel belongs to sticky and soft material, when making peanut oil, you should set different technical parameter compared with rapeseed oil extraction. As for temperature, the peanut is about 130℃ while the peanut is about 140-160 ℃; as for water content, the rapeseed is about 1.5-2.5%, peanut is about 2.5-3.5%.