By consulting the literature of related edible oils and the summary of production practice, the crude oil after pressing is only filtered, and the obtained oil is still crude oil, which is easy to foam and rancid after cooking, and has a dark color after a long time. For direct use, squeezed crude oil must go through the oil refining process! For this reason, the portable batch oil refinery developed and produced to meet the needs of small processing plants and meet the crude oil purification needs of general oil mills.