Full Analysis of the Oil Extraction Process of Soybean Oil Presses: A Professional Technical Knowledge Popularization

In daily life, edible oil is an essential part of our diet, and soybean oil is widely used in cooking and other fields. As an important piece of equipment in the oil extraction industry, the soybean oil press goes through several key stages in the oil extraction process, including cleaning, crushing, cooking, and pressing. This article will provide a detailed analysis of this process and popularize professional technical knowledge.

The Oil Extraction Process of Soybean Oil Presses

The first stage is cleaning. Raw soybeans usually contain impurities such as soil, stones, and broken beans. By using cleaning equipment, these impurities can be effectively removed, ensuring the purity of the raw materials. Studies show that the impurity content in soybeans can be reduced to less than 1% after proper cleaning, which is crucial for the subsequent oil extraction process.

Next comes the crushing stage. The cleaned soybeans are crushed into small particles to increase the surface area, making it easier for the oil to be released during the pressing process. Generally, the crushed soybean particles are about 2 - 3 mm in size, which is an optimal state for oil extraction.

Cooking is an important step to improve the oil yield. Through heating, the structure of the soybean cells is destroyed, and the viscosity of the oil is reduced. The cooking temperature is usually controlled at around 100 - 110°C for about 30 - 40 minutes, which can effectively promote the separation of oil from the soybean matrix.

Finally, the pressing stage. Using mechanical force, the oil is squeezed out from the cooked soybeans. The pressure applied during pressing can reach up to 30 - 50 MPa, which ensures a high oil extraction rate. On average, about 18 - 22% of the oil in soybeans can be extracted through this process.

Different Types of Soybean Oil Presses

Small - scale oil presses: These are suitable for small - scale production, such as home use or small workshops. They are characterized by their compact size, low cost, and easy operation. For example, a small - scale oil press can process about 50 - 100 kg of soybeans per day, which is ideal for meeting the needs of a small family or a local community.

Integrated machines: These machines integrate multiple functions, such as cleaning, crushing, cooking, and pressing, into one unit. They are highly efficient and can save a lot of labor and time. An integrated soybean oil press can process 200 - 500 kg of soybeans per day, suitable for medium - sized enterprises.

Large - scale industrial oil presses: Designed for large - scale industrial production, these machines have a high processing capacity. They can process thousands of kilograms of soybeans per day, meeting the high - volume demand of the market. The large - scale industrial oil presses are equipped with advanced control systems to ensure stable and efficient operation.

Screw oil presses: Widely used in the oil extraction industry, screw oil presses have a simple structure and high oil extraction efficiency. They can continuously process soybeans, and the oil yield is relatively high. The screw oil presses can process about 300 - 800 kg of soybeans per hour, depending on the model.

Hydraulic oil presses: These presses can produce high - quality oil with less residue. The hydraulic system can provide a stable and uniform pressure, ensuring the quality of the extracted oil. Hydraulic oil presses are often used in the production of high - end soybean oil products.

Real - world Application Cases

Many enterprises have achieved good results by using soybean oil presses. For example, a small - scale oil workshop in a rural area purchased a small - scale oil press. By processing local soybeans, they not only met the oil needs of the local community but also increased their income. Another medium - sized enterprise introduced an integrated soybean oil press, which improved the production efficiency by 30% and reduced the production cost by 20%.

If you are interested in learning more about soybean oil presses and their applications, please feel free to contact us. You can leave your message on our website or follow our social media channels for the latest product information. We are here to provide you with professional advice and high - quality products.