Palm fruit pretreatment machinery

Functions

1. Impurity Removal: Through methods such as screening, magnetic separation, and air separation, various impurities in oilseeds are removed, including stones, metals, dust, and straw. For example, a vibrating screen uses sieves with different pore sizes to separate impurities larger than the oilseed particles; magnetic separation equipment can adsorb and remove ferromagnetic metal impurities mixed in the oilseeds.
2. Crushing and Dehulling: For oilseeds with hard outer shells or large particles, such as soybeans and peanuts, crushing is required to reduce their particle size, facilitating subsequent flaking operations. Meanwhile, dehulling equipment can remove the outer skin of the oilseeds, reducing the impact of the husk on the quality of the oil. For instance, a soybean dehulling machine separates the soybean skin from the bean kernel through principles such as friction and impact.
3. Softening: According to the characteristics of the oilseeds and processing requirements, the moisture and temperature of the oilseeds are adjusted to achieve an appropriate degree of softening. Generally, the oilseeds are conditioned with steam or hot water to enhance their plasticity, making it easier to form thin flakes during flaking. For example, when softening rapeseeds, the steam input and time are controlled to adjust their moisture content within a certain range, and the temperature is controlled within an appropriate interval.
4. Flaking: The softened oilseeds are rolled into thin flakes, breaking the cell structure of the oilseeds, increasing the specific surface area of the oilseeds, and improving the oil extraction efficiency. The rolls of the flaking machine squeeze the oilseeds into uniformly thick thin flakes, making it easier for the oil inside the oilseeds to be extracted during subsequent leaching or pressing processes.
5. Steaming and Stir - frying: This is a comprehensive heat - treatment process. Through heating and steaming, the proteins in the oilseeds are denatured, the oil is coagulated, and the cell structure is further broken. At the same time, the physical and chemical properties of the oilseeds are improved, increasing the oil yield and oil quality. For example, during the steaming and stir - frying process, the phospholipids in the oilseeds will coagulate, facilitating their removal during subsequent refining processes.

Benefits

1. Increased Oil Yield: Through pretreatment steps such as impurity removal, crushing, and flaking, the cell structure of the oilseeds is broken, making it easier for the oil to be released from the oilseeds. During subsequent pressing or leaching processes, the oil extraction efficiency can be significantly improved, thus increasing the oil output.
2. Enhanced Oil Quality: Removing impurities and dehulling can prevent substances such as pigments and cellulose from the husk from entering the oil, reducing the impurity content in the oil and improving the color and flavor of the oil. At the same time, appropriate steaming and stir - frying can inactivate the enzymes in the oilseeds, preventing the oil from deteriorating, such as rancidity, during storage, and extending the shelf - life of the oil.
3. Reduced Production Costs: Efficient pretreatment can make the subsequent pressing or leaching processes smoother, reducing equipment wear and energy consumption. For example, after flaking, the thin flakes of oilseeds can come into more thorough contact with the solvent during leaching, accelerating the dissolution and diffusion rate of the oil, shortening the leaching time, and reducing solvent consumption and energy consumption.
4. Adaptability to Different Processing Technologies: Pretreatment equipment can perform targeted treatment on oilseeds according to the characteristics of different oilseeds and processing technology requirements. Whether using the pressing method or the leaching method to extract oil, the pretreated oilseeds can better meet the requirements of the corresponding processes, improving the flexibility and adaptability of the entire oil production process.
5. Ensured Stable Equipment Operation: Impurity removal prevents hard objects such as stones and metals from damaging subsequent equipment, ensuring the normal operation of the equipment. At the same time, the appropriately pretreated oilseeds are more smooth during transportation and processing, reducing the occurrence of malfunctions such as blockages, and improving the stability and reliability of the production equipment.