Generally 3 pounds of rapeseed can squeeze a pound of oil.

Generally the oil yield of rapeseed is about 40%, and 100 pounds can extract 40 pounds of oil. It mainly depends on how the quality of the rapeseed and the quality of the oil extraction equipment, according to the national standard. 1 level of oil content of 40%, 2 level of oil content of 39%, 3 level of oil content of 38%, 4 level of oil content of 37%, 5 level of oil content of 36%, 6 level of oil content of 35%, 7 level of oil content of 34%, 8 level of oil content of 33%.

The oil yield of rapeseed is also related to the dryness and wetness of rapeseed, the pressure of the oil press, the fire of frying, and the oil filter. The oil yield of rapeseed is generally only 30%, and if appropriate methods are used, the oil yield can be increased by 2% to 5%. Because in the process of processing sediment will absorb oil, thus reducing the oil yield of rapeseed, so before processing should be sifted to sediment.

Control fire

Generally, when frying rapeseed in a pan, it is all fried before opening the pan and pouring out the rapeseed, and each time, there will be 1.5kg to 2kg of rapeseed sticking to the bottom of the pan to be burnt. Therefore, the seeds fried to eight mature, we must open the upper stove mouth, seal the lower air outlet to control the stove fire. Specifically in the stove mouth wall to build a movable groove, embedded in a movable iron plate, the need for fire, the iron plate upward, sealing the mouth of the stove need to fire, put the iron plate down, sealing the wind.

When using the 95 horizontal axial oil press, the old No. 6 screw can be used instead of the No. 5 screw. This can increase the internal pressure, so that the oil part of the back 8cm ~ 10cm, so that every 100kg rapeseed can be more oil 1kg ~ 2kg. due to the oil molecules in the high temperature in the active, from the frying pan just out of the rapeseed temperature of 108 ° C, while the heat on the press can be more oil. Therefore, the amount of fried seeds per pot should be controlled at 40kg to 50kg, so as to fry with the press, to ensure that the hot material on the press.