Peanut is a very common food, in our daily life can always see its figure, whether it is fried into dry peanuts or deep processing of peanut oil, peanut butter are very popular. Peanut ripening season is generally in August to October, whenever this time period, the processing of peanut products manufacturers will be busy, peanut oil plants are no exception, some oil plants in order to expand production will be replaced or purchased new equipment, the choice of more is the screw oil press. Because of the rich oil content in peanuts, up to 50% or so, and the screw press can achieve good results in the production of peanut oil.

Peanut oil screw press mainly consists of five parts: hopper, gear box, press chamber, press screw and frame. Among them, the press screw is the key of the whole peanut oil screw press, and the choice of its material will affect the quality and service life of the press. The process of extracting peanut oil by screw oil press: the processed oil material is conveyed from hopper to press chamber, and the material embryo is pushed inward continuously by the press screw for pressing, the material embryo is in constant motion in the press chamber of the screw oil press, the relative motion between the material embryo will produce friction, and the friction between the oil material and the press screw and press chamber will also produce friction, so as to generate heat.

At the same time, the diameter of the root circle of the screw is gradually becoming thicker from the inside to the outside, and the pitch of the screw is gradually decreasing, so when the screw is rotating the threads make the material embryo that can be pushed forward and can be flipped outward, and the layer of material close to the surface of the threads of the screw is rotating along with the press shaft, but the volume in the press chamber is constantly decreasing, which makes the oil material subjected to a stronger squeezing pressure. Peanut in the screw oil press is subjected to high temperature and high pressure, the protein in the oil material is denatured by heat, the plasticity of the material embryo becomes larger but the viscosity is reduced, so that the oil in the oil material is precipitated to achieve a good oil yield. Therefore, both peanut oil factories and oil mills in the processing of peanut oil will choose the screw oil press.

Advantages of pressing peanut oil with screw press:

1, the protein content of peanut cake after oil extraction is as high as 60%, which contains 8 kinds of amino acids needed by human body is complete protein;

2, peanut oil belongs to the non-drying oil, contains a large number of fatty acids, peanut oil press machine which is dominated by unsaturated fatty acids, can be processed into salad oil, thick peanut oil, pure peanut oil and other high-grade edible fats.

3, after roasting peanuts, issued a pleasant extraordinarily fragrant, its volatile fragrance rich in more than 230 kinds of composition, color and flavor, rich in nutrients.

Why peanut oil needs to be cold filtered:

Cold filtration of peanut oil is the filtration of the crude oil after the peanut oil press to remove the fat contained in the crude oil and reach the second grade edible oil consumption standard stipulated by our country. Compared with the traditional hot filtration process, the peanut oil cold filtration process has the following obvious advantages:

1. precipitation at low temperature, more thorough separation of impurities.

2. avoiding the problems of oxidization and decay of oil and grease under high temperature, so that the oil and grease can maintain a high quality.

3. reducing the multi-step operation required in the traditional hot filtration process and lowering the production cost.

4. Better purification effect can improve the quality of oil increase sales.

Investment in peanut oil extraction project, it is important to choose the right oil machinery manufacturers, Huatai oil machinery manufacturers are committed to providing customers with high-quality equipment and services, a wealth of experience in the project as well as perfect after-sales service, for the smooth production of oil plant escort.