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Composition structure of twin-screw extruder

by:TENGDA     2023-01-26
The twin-screw extruder is divided into the following system parts:
1. Feeding system: including hopper, stirring motor and feeding motor. It can prevent material accumulation and facilitate its smooth entry into the feed port.
2. External heating system: It mainly uses heating rods and cylinders to heat materials efficiently to promote plasticization.
3. Cooling system: The heat exchange system composed of heat transfer oil or water is used to reduce the heat of the fuselage, so as to effectively control the temperature of the cylinder.
4. Hydraulic screen changing system: Use replaceable filters to intercept impurities, improve the degree of plasticization, and ensure the uniformity and stability of the output material quality.
5. Vacuum system: extract the moisture and other low molecular volatiles in the material.
6. Electronic control system: responsible for monitoring the relevant equipment of the main and auxiliary material system.
7. Screw system: The most important parts of the twin-screw extruder can be divided into conveying section, melting section (exhaust port), plasticizing section (vacuum port) and exhaust section.

The screw system mainly completes the plasticization and conveying process of the material, which has a great influence on the performance and quality of the finished product. Different models and manufacturers of equipment have different screw parameter settings, which need to be paid attention to.



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