As the global demand for vegetable oil continues to grow, soybean oil manufacturing machine has become an indispensable and important equipment in the oil processing industry. Soybean oil is one of the most consumed edible oils in the world and is widely used in cooking, food processing, biodiesel production and other fields. In order to meet the increasing market demand, modern soybean oil manufacturing machines provide efficient, automated and sustainable solutions for production of all sizes from small producers to large industrial plants. This article will introduce the working principle, main features, equipment types, application areas and other information of soybean oil manufacturing machine in detail to help you understand the role of this core equipment in the soybean oil production process.

1. Basic Overview of Soybean Oil Manufacturing Machine

Soybean Oil Manufacturing Machine is a mechanical equipment specially designed for extracting oil from soybeans. Its core function is to separate oil from soybeans by mechanical extrusion or solvent extraction. Soybean Oil Manufacturing Machine can efficiently process large quantities of soybeans and convert soybean raw materials into refined soybean oil through multi-step processing, which is suitable for edible or industrial use.

Soybean Oil Manufacturing Machine can not only work independently, but also be integrated with other equipment to form a fully automated production line, covering the whole process from soybean cleaning, crushing, conditioning, pressing, extraction to refining.

2. Working Principle of Soybean oil manufacturing machine

1. Soybean Cleaning and Pretreatment:
- Soybeans first go through a series of cleaning steps to remove impurities such as dust, stones, metal, etc. This is usually done using cleaning equipment such as vibrating screens and magnetic separators to ensure that the soybeans are clean and will not damage subsequent equipment.

2. Crushing and Flake Rolling:
- The cleaned soybeans will enter the crusher for crushing in order to break the oil cell structure. Subsequently, the soybeans are pressed into thin sheets (flakes) to increase the oil extraction area and thus increase the oil yield. Flake rolling machines (flaking machines) are used in this process to ensure that the soybean flakes are uniform and suitable for subsequent processing.

3. Tempering and Heating:
- To further soften the soybean flakes, the tempering machine heats the soybeans to the appropriate temperature and humidity. This process can improve the fluidity of the oil, thereby promoting more efficient oil extraction.

4. Oil extraction:
- The oil extraction process is the core of the entire production chain and is mainly carried out in the following two ways:
- Mechanical pressing: The soybean oil press (screw press) squeezes the oil directly from the soybean flakes by mechanical extrusion. Mechanical pressing is suitable for small and medium-sized producers. It is simple to operate and has low cost, but the residual oil rate after pressing is high, usually 6%-8%.
- Solvent extraction: For large-scale industrial production, solvent extraction is more common. The solvent (usually hexane) comes into contact with the crushed soybeans to dissolve the oil and separate it. This method has a high oil extraction rate of more than 99% and a very low residual oil rate.

5. Filtration and preliminary refining:
- The extracted crude oil contains impurities such as phospholipids, free fatty acids and solid particles. These impurities are removed through preliminary filtration equipment such as plate and frame filters or continuous filters to obtain purer crude soybean oil.

6. Oil refining:
- In order to produce high-quality soybean oil for consumption, the crude oil needs to be further refined. The refining process includes steps such as degumming, deacidification, decolorization and deodorization, and finally removes harmful substances and impurities, making the soybean oil transparent, odorless and clear in color.

3. Types of Soybean oil manufacturing machine

1. Single screw press:
- Single screw press is a kind of equipment suitable for small-scale production, which mainly extracts oil by mechanically squeezing soybean flakes. It has the characteristics of simple structure, convenient operation and low cost.

2. Double screw press:
- Double screw press is suitable for medium and large oil mills, using a double screw system to squeeze soybeans at the same time, thereby improving the squeezing efficiency and oil yield. This type of equipment is usually used in conjunction with solvent extraction equipment to achieve a higher oil recovery rate.

3. Solvent extractor:
- Solvent extractor is an indispensable equipment in large-scale industrial production. It dissolves the oil in soybeans through solvents, has a high recovery rate, and is suitable for production needs with large daily processing volume.

4. Fully automatic oil refining machine:
- The refining machine includes multiple modular equipment such as degumming, deacidification, decolorization, and deodorization, which can fully automatically complete the refining of soybean oil to ensure the high quality and edible safety of the finished oil.