Fried onions are a popular snack with a rich flavor and crispy texture. However, fried onions usually absorb a lot of oil after the frying process, which affects the taste, storage life and nutritional balance. Therefore, how to remove oil from fried onions is a key step to improve product quality.
In industrial production, the de-oiling step is usually completed by a centrifugal de-oiling machine. Its principle is to use centrifugal force to throw away the excess oil on the surface and in the gaps of the onion, thereby achieving the purpose of de-oiling.
Working principle of centrifugal deoiler
The basic principle of centrifugal deoiler is similar to the dehydration function of a household washing machine. Its main structure includes a rotating drum, a drive motor, a shock absorption system and a control device. Its operation process is as follows:
Loading: Put the fried onions evenly into the rotating drum.
High-speed rotation: The motor drives the drum to rotate at a high speed (usually 600-1000 rpm), generating a strong centrifugal force.
Oil removal: Under the action of centrifugal force, the oil on the surface of the onion is thrown out radially and discharged through the filter holes on the drum wall.
Unloading: After running for tens of seconds to several minutes, the deoiling is completed and the onions are taken out and enter the next process, such as cooling or packaging.
Advantages of centrifugal deoiling machine
Efficient deoiling: It can remove more than 80% of the surface oil in a short time, greatly reducing the oil content of the finished product.
Maintain the taste: The fried onions are crisper after deoiling, avoid greasy feeling, and enhance the flavor.
Extend the shelf life: Reducing the oil content helps to delay oxidation and deterioration, and extend the shelf life of the product.
High degree of automation: Some equipment supports intelligent control such as automatic feeding and discharging, variable frequency speed regulation, etc., to improve production efficiency.
Application scope of centrifugal deoiling machine
In addition to fried onions, centrifugal deoiling machine is widely used for deoiling the following foods:
French fries, potato chips, chicken nuggets, fried peanuts, fried broad beans and other foods
In addition, some models of centrifuges can also be used for dehydration, such as drying after washing vegetables.