In the production and processing of oils, screw oil presses play an important role with their unique working principles and high efficiency. Although its working principle seems simple, it contains the secret of mechanical extrusion. This article will deeply analyze the working process of the screw oil press, reveal the exquisite mechanism in the extrusion process, and provide solid technical support for your production work.

  1. Oil transportation:

The work of the screw oil press begins with the transportation of oil. The oil that has been pre-treated such as cleaning and crushing is transported to the feed port of the screw oil press, which kicks off the oil extraction process.

  2. Movement of screw shaft and pressing rod:

The core components include the screw shaft and the pressing rod, which are driven by power sources such as electric motors and start to move together. The rotation of the screw shaft and pressing rod pushes the oil to the pressing chamber in an orderly manner, laying the foundation for mechanical extrusion.

  3. Mechanical extrusion:

The oil is mechanically squeezed in the pressing chamber, which is the essence of the entire oil pressing process. The coordinated action of the screw shaft and the pressing rod causes the pressing rod to move forward and rotate, squeezing the oil continuously and powerfully. The process of mechanical extrusion separates the oil in the oil material to form an oil-water mixture.

  4. Oil-water separation:

The extruded oil-water mixture passes through the press chamber so that the oil and water can be quickly separated internally. Due to the low density of the oil, the oil will float to the top of the pressing chamber, while the water will sink, completing the oil-water separation process.

  5. Oil export:

The separated pure oil flows to the outlet of the oil press, enters the next processing step or is collected and stored. At this stage, the oil press produces crude oil that is initially extracted, with high quality and purity.

  6. Temperature control during oil extraction:

In order to ensure the final oil quality, temperature control needs to be paid attention to during the operation of the oil press. By adjusting the feed temperature, cooling device and other means, the appropriate oil pressing temperature can be maintained to avoid the adverse effects of high temperature on oil quality.

  7. Slag processing:

The oil press not only obtains oil during the oil extraction process, but also produces a certain amount of pressed residue, that is, the solid residue in the oil. These pressed residues can be used for feed, fertilizer, etc. to achieve sustainable and comprehensive utilization of resources.