Adaptability of different oilseed crops to screw expeller press

As an important equipment for modern agricultural processing, Screw expeller press machine is widely used in the oil pressing production of various oil crops due to its high efficiency, energy saving and versatility. This paper aims to explore the adaptability of different oilseed crops to Screw expeller press machine, and conducts in-depth analysis from mechanical structure, pressing parameters to actual production benefits to provide scientific reference data.

Structure and working principle of Screw expeller press machine, Adaptability of different oilseed crops to Screw expeller press machine.

Mechanical structure

Screw expeller press machine is mainly composed of feed hopper, screw shaft, extrusion cage, oil outlet and slag outlet. Its structural design is to advance oil crops through the rotation of the screw shaft, gradually compress and squeeze, and finally achieve oil separation.

Working principle

The working principle of Screw expeller press machine is to use the rotation force of the screw shaft to squeeze the oil crops to the oil outlet point through the increasing pitch and compression cavity. During this process, the cell walls of oilseed crops are destroyed and the oil is released.https://www.hgindustries.com/products-press.html

Adaptability of different oilseed crops to screw expeller press

Adaptability of soybeans

As an oilseed crop with high protein content and rich oil, soybeans have good adaptability to screw expeller press. Its moderate particle size and hardness enable the screw shaft to effectively advance and press during the oil pressing process. It should be noted that pretreatment of soybeans, such as peeling and moistening, can significantly improve the oil extraction rate and oil quality.

Adaptability of peanuts

Peanuts are often used as raw materials for oil pressing due to their high oil content and unique flavor. Their larger particles and softer texture require the screw expeller press to adjust the pressing force during pressing to prevent excessive squeezing of oilseeds and reduce oil quality. During the peanut oil pressing process, the oil press needs to set appropriate temperature control to ensure the flavor of the oil.

Adaptability of rapeseed

Rapeseed oil has attracted much attention due to its nutritional value, and its oil pressing process needs to consider the fine particles and high oil content of rapeseed. When processing rapeseed, screw expeller press usually needs to be heated in advance to enhance the fluidity of oil and improve the oil yield.

Adaptability of cottonseed

The extraction of cottonseed oil requires special attention to the cottonpol component it contains, which may cause corrosion to the oil pressing equipment. Therefore, when using a screw oil press machine to press cottonseed oil, corrosion-resistant materials must be selected, and cottonpol removal treatment must be added during the oil pressing process.

Benefit analysis of screw expeller press in oil crop oil pressing

Production efficiency and energy consumption

The oil pressing efficiency of different oil crops directly affects the production efficiency and energy consumption of screw expeller press. The oil pressing process of soybeans and peanuts is relatively smooth, with high oil pressing rate and low energy consumption; while rapeseed and cottonseed require higher energy consumption and longer processing time.

Oil quality and residual oil rate

The different characteristics of oil crops determine the amount of residual oil after screw expeller press pressing. By optimizing the pressing parameters, the residual oil rate can be reduced and the oil quality can be improved. Especially for peanuts and rapeseed, the pressing conditions need to be finely adjusted.

Equipment maintenance and cost control

The long-term use of screw expeller press needs to consider the maintenance cost and service life of the equipment. Different oil crops have different degrees of wear on the oil press. For example, cottonseed oil pressing may require more frequent maintenance.

Through an in-depth analysis of the adaptability of different oilseed crops to screw expeller press, we can draw the following conclusions: 

Screw expeller press can adapt to the oil pressing needs of a variety of oil crops, but the oil pressing parameters need to be adjusted according to the characteristics of the oil.

Oil crops such as soybeans, peanuts, rapeseed and cottonseed perform differently in screw oil presses, requiring targeted pretreatment and parameter optimization.

When processing different oil crops, the production efficiency, energy consumption, oil quality and equipment maintenance cost of screw expeller press are different.

The future development of screw expeller press should focus on intelligence and automation to cope with the adaptability of different oilseed crops to screw expeller press and further improve the oil extraction efficiency and oil quality.

Through the analysis of this article, it is hoped that it can provide valuable reference for agricultural processing enterprises in selecting and using screw expeller press, thereby promoting the processing efficiency and quality improvement of oil crops.