What is the scope of application of the twin-screw extruder? How does it work?
1. Scope of application
1. Twin-screw food extruder is suitable for producing pet feed (dog food, cat food, rabbit food, hamster food, mink food, etc.), aquatic feed (fish feed, shrimp feed, turtle feed, etc.).
2. Soybean silk protein, plant tissue protein, modified starch, corn flakes, breakfast cereals, crispy rice, French fries, crispy triangle slices, chestnut rice sticks, Cheetos.
3. Nutritional rice, artificial rice, baby nutrition powder, pregelatinized starch, bread crumbs and pet chew products, etc.
2. Working principle
1. The working principle of the extruder is actually relatively simple. As we mentioned in the overview of the extruder, the extruder uses mechanical energy to convert heat energy to provide kinetic energy. Usually, it uses the extrusion of the unequal distance and non-standard screw system of the extruder. Pushing forward, the gas in the material is discharged and quickly filled with the material, and the material is subjected to shear force to generate backflow, which increases the pressure in the machine chamber.
2. At the same time, the mechanical energy is converted into heat energy through the friction of the material in the chamber, so that the material becomes a gel state with fluidity. When the material is extruded to the outlet, the pressure changes from high pressure to normal pressure instantly, and from high temperature to normal temperature instantly. , causing water to evaporate rapidly from the tissue structure.
3. With the friction between the stack and the machine chamber, the material is fully mixed, extruded, heated, glued, gelatinized, and the tissue changes, the original structure is destroyed, and countless microporous structures are formed inside, and then through cutting device, cut and cool, that is, the puffed food is formed.
After reading the above introduction, do you have a deeper understanding of how to make delicious puffed food? Thanks to the advancement of technology and equipment manufacturing technology, our life and diet are colorful.
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