1. Cleaning and drying of peanuts: Peanuts inevitably contain some impurities. If the soil, stems and leaves in the peanut kernels are not removed, they will not only affect the quality of the oil and cake, but also become part of the peanuts. Absorb grease and reduce production efficiency. If tomato sauce contains sand, metal, hemp rope and other debris, it will cause wear and tear on machine parts, induce production accidents and affect process results. Therefore, in order to ensure smooth production, there are many cleaning methods, and different methods are adopted according to the conditions of impurities. If the light contains impurities, such as grass and leaves, you can use winnowing to blow away the impurities with air. If the impurity particles are small, you can choose to remove the impurities. For some impurities whose size and relative density are similar to those of peanuts, if they belong to soil or contain iron impurities, electromagnets or permanent magnet wires can be used to separate them. After cleaning, the impurity content should be within the following range.
2. Shelling: The purpose of shelling peanuts before oil extraction is: to reduce the adsorption of oil by the shell and improve the oil production efficiency; it can increase the production capacity of the oil press and reduce the wear and tear on the oil extraction equipment; it can be used in rolling stock to increase the gross profit margin. The quality of oil; improving the quality of cake is conducive to comprehensive utilization.
3. Heat treatment: Heat treatment is one of the most important processes in the oil extraction process. Including greening and heating, the heat treatment in production is called steaming or frying, and the characteristics of steaming are called post-fire cooking. All heated green. What has been pressed is called hot pressing, and what has not been heat treated is called cold pressing. Peanuts are mainly hot pressed. The quality of the heat treatment effect is directly related to the smooth progress of the entire oil production process and the oil production efficiency. Affect the quality of seed cake.
4. Press: The screw oil press machine is a widely used oil press. It has a simple structure, high pressure, can continuously process materials, has low labor intensity, and can process a variety of oil seeds.