If you want to engage in the oil pressing industry, you need to understand the concept of pressing stages when purchasing an oil press. Oil presses have two, three, four, five, or even six stages of pressing. Many customers believe the higher the number of pressing stages, the higher the oil yield. In fact, this kind of thinking is wrong. The following Benteng Machinery Manufacturer will introduce in detail the knowledge about the pressing stages of the oil press.

About the press series

Many customers don’t know what the basis for the pressing stages of the oil press is. In fact, it is mainly determined according to the number of pressurized sections on the main shaft of the oil press, and the corresponding pressing stages range from two, three, four to five, or even six stages.

The higher the stage of the oil press equipment, the greater the pressure of the corresponding oil press. Therefore, many people think that the greater the pressure, the higher the oil yield. But this is not the case. The oil yield of the oil press mainly depends on the nature of the pressed oil.

For example, sesame, which is an oil crop with a high oil content, cannot be used with an oil press with too high a series, because the pressure is too high, and the oil will be squeezed into a paste in the press chamber and cannot be formed into a cake. Then, for oil plants with low oil content, such as soybeans and cottonseed, it is more suitable to assemble equipment with high pressing stages.

    

About the oil yield of various oilseeds

The linseed/flax oil ratio is about 38%, and 100 catties of flax can produce about 38 catties of flax oil.
The oil yield rate of peanuts is about 45%, and 100 catties of peanuts can produce about 45 catties of peanut oil.
The oil yield rate of soybeans is about 15%, and 100 catties of soybeans can produce about 15 catties of soybean oil.
The oil yield of sunflower is about 45%, and 100 catties of sunflower can produce about 45 catties of sunflower oil.
The oil yield of sesame is about 50%, and 100 catties of sesame can produce about 50 catties of sesame oil.
The oil yield of corn germ is about 38%, and 100 catties of corn germ can produce about 38 catties of corn germ oil.
The oil yield of walnuts is about 50%, and 100 catties of walnuts can produce about 50 catties of walnut oil.
The oil yield of rapeseed is about 38%, and 100 catties of rapeseed can produce about 38 catties of rapeseed oil.
The oil yield of cottonseed is about 15%, and 100 jin of cottonseed can produce about 15 jin of cotton oil.

For low-oil crops, such as soybeans, cottonseed, etc. We need to choose an oil press with a high pressing level. For high-oil crops, such as walnuts, sesame, pine nuts, etc., you can choose an oil press with a lower crushing level. For oils with middle oil content, such as peanuts and rapeseed, you only need to choose a moderate oil press grade.

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