Pretreatment equipment which is pretreating the oilseeds, including: cleaning sieve, magnetic separator, flaker and cooker etc.
1. Magnetic separator and cleaning screen
To move the impurities in the raw materials. This can help to protect the following machines.
2. Crushing
Crushing is necessary for soybean oil making, because the volume of soybean is a little big. In order to improve the oil yield rate and protect the following machines, we need to crush big seeds to small parts. If the raw material is small, we won’t need the crushing.
3. Softening
This is the special step for soybean oil making. Soybean is becoming soft after this step, so it is easier to flake cake and press.
4. Flaking roller
To make the groundnut into pieces with the thickness from 0.25-0.3 mm. This can help the seedsheating well-proportioned and soaking well in the extraction section.
5. Dryer and cooker
Before the raw materials entering the extraction section, we need to adjust the water rate by dryer. In this process, the water and temperature help to get crude oil easily and improve the quality of cake and oil. After the dryer and cooker under 105-110 °C, the water content is 5-8%.