When purchasing a high-performance twin-screw extruder, it is indeed necessary to pay special attention to the drive section and the extrusion section, which are the core components of the twin-screw extruder and directly related to the equipment’s performance, efficiency, and lifespan.
Drive Section
The main function of the drive section is to provide the torque required by the screws, ensuring that the twin-screw extruder can work efficiently and stably. Torque distribution technology is the key to the drive section, determining how power is evenly distributed to the two screws in a limited space. Different torque distribution technologies, such as traditional parallel three-axis torque distribution, high-torque parallel three-axis torque distribution, and bilateral symmetrical gear-driven torque distribution, each have their advantages and disadvantages, directly affecting the load-bearing capacity of the gearbox, the lifespan of the machine, and its operational performance.
When purchasing, the following points need to be considered:
- Advanced torque distribution technology: Choose a mature and evenly distributed torque distribution technology to ensure balanced force on the two screws, reducing wear and failure.
- Load-bearing capacity of the gearbox: The gearbox is a core component of the drive section, and its load-bearing capacity directly affects the stability and lifespan of the machine. Therefore, a gearbox with strong load-bearing capacity should be selected.
- Transmission efficiency: An efficient transmission system can reduce energy loss and improve the overall efficiency of the equipment.
Extrusion Section
The extrusion section mainly consists of the barrel, screw elements, and mandrel, and is the key area where the twin-screw extruder completes plasticization and mixing. Screw clearance, volumetric efficiency, rotational speed, mandrel strength, and the lifespan of the screw elements are important indicators for measuring the performance of the extrusion section.
When purchasing, the following points need to be considered:
- Screw clearance: A small screw clearance can improve plasticization effect and mixing uniformity, but it also increases wear. Therefore, a screw clearance suitable for production needs should be selected.
- Volumetric efficiency: High volumetric efficiency can improve production efficiency, but it also increases the load on the machine. Production needs and the machine’s load-bearing capacity need to be considered comprehensively.
- Rotational speed: High rotational speed can improve production efficiency, but it also increases wear and energy consumption. Therefore, a suitable rotational speed range should be selected.
- Mandrel strength and screw element lifespan: High-strength mandrels and high-wear-resistant screw elements can improve the stability and lifespan of the equipment.
Summary
When purchasing a high-performance twin-screw extruder, it is necessary to comprehensively consider the technical performance and indicators of the drive section and the extrusion section. By comparing the torque distribution technology, gearbox load-bearing capacity, transmission efficiency, screw clearance, volumetric efficiency, rotational speed, mandrel strength, and screw element lifespan of different products, select the one that best meets your production needs. At the same time, attention should also be paid to the after-sales service and the strength of the manufacturer to ensure long-term stable operation of the equipment and timely technical support.
