The general processing method, soybean oil rate was only 30%. The following skills, can use oil increased 7.5 percentage points, to 37.5%.
1, control the fire. General pan fried soybean oil, are all cooked before you speak out, each time 1.5-2 kg soybean sticky burnt at the bottom of the pot. If the wall in a movable groove in the stove mouth, a movable plate, need to fire, put the plate up, seal the mouth; when the need to slow fire, put the plate down, sealed air inlet, Oil mill open the upper stove mouth, control the fire. Therefore, when bean fried eight mature, as long as the open top stove mouth, seal the lower air outlet, can prevent Huang Doushao paste, so as to improve the oil yield.
2, refit screw. 95 horizontal shaft dynamic press, composed of 1 to 9 screw, 5 screw than 6 smaller, when in use, the old No. 6 instead of 5, it can increase the internal pressure, resorted to the oil site after the shift to 8-10 cm. Only this one, every 100 kilograms of soybeans can be more oil 1-2 kg.
3, hot material on the virgin. seed oil press The most active oil molecules at high temperatures. General fresh from the frying pan out bean temperature is 108 ℃, hot pressing can be more oil. Therefore, the health and weight per pot is controlled at 40-50 kg, do stir fried with fresh, hot pressing to ensure material.
4, the appropriate content of bran. Rapeseed oil rate is high, in the squeezing cylinder pressure sliding fast, oil has not been pressed cake is pressing, therefore, in every 100 kilograms of rapeseed is doped with 5-7 kg fresh without impurity, sieve to ash Gu Kang (good were mixed, poor little mix). Because of the large stress surface, can make the rapeseed produced reunion, increasing pressing pressure, slow sliding speed, so it can more oil. It may also be the oil of dry slag, oil mix in the bran, caught in the middle and then pressing of rapeseed, but also can improve the oil yield.
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