This invention belongs to the field of
edible oil cold pressing technology, specifically relating to a structure and method for cold pressing flaxseed and
sunflower oil mixture. The method includes the following steps: S1, pure flaxseed and pure
sunflower seeds are blended according to a preset
mass ratio; S2, the pure flaxseed and pure
sunflower seeds are respectively sent to independent conditioning units for differentiated conditioning and low-temperature targeted
enzyme passivation treatment, and then respectively subjected to band-matched short-time
infrared pre-cooking treatment to obtain
plasticity-matched mixed conditioning kernel material; S3, a five-stage
variable pressure pressing process of pre-pressure degassing-low-pressure primary pressing-medium-pressure buffering-high-pressure final pressing-
pressure release and pulp
discharge is adopted to collect the
crude oil from the low-pressure primary pressing stage and the
crude oil from the high-pressure final pressing stage, and combine them to obtain mixed cold-pressed
crude oil; S4, the mixed cold-pressed crude oil is subjected to
phospholipase-assisted low-temperature in-situ targeted degumming treatment under high-purity
inert gas protection throughout the process, and then sent to a fully enclosed gradient
ceramic membrane
filtration system for graded fine
filtration; finally, the finished flaxseed and sunflower mixed cold-pressed oil is obtained.