What Is Twin Screw Extruder? A Comprehensive Guide
Let’s introduce what is twin screw extruder? A comprehensive guide for you.
Development history of conical twin screw extruder:
The PVC Concial Twin Screw Extruder (FromWiki Article) is developed on the basis of the single screw extruder.
Due to its good feeding, mixing, plasticizing, venting and extrusion stability, it plays a great role in extruded products.
Cooling method of conical twin screw extruder:
Screw cooling method of PVC plastic conical twin screw extruder: oil cooling system cooling.
Barrel cooling method: special air cooling system.
According to different formulas, the screw with the most reasonable structure is prepared to achieve the plasticization state and logistics quality.
The screws are all processed by high-precision CNC screw milling machines, which can ensure a high degree of consistency in the extrusion performance of various similar extrusion equipment.
Twin Screw Extruder Application:
This product is suitable for cooling thermoplastics.
Features:
1. Barrel cooling method: air cooling, small temperature fluctuation.
Cylinder: Cast aluminum heating, long service life, easy assembly and disassembly.
2. Equipped with overcurrent protection device to prevent damage to machine parts.
3. Set up the distribution gearbox to distribute evenly to each screw.
4. DC speed regulating device, stable speed regulation and convenient speed regulation.
5. Equipped with an exhaust device to remove moisture, air and low molecular compound monomers from PVC powder to improve product quality.
Due to the characteristics of the conical screw, the heat transfer rate of the material is fast, which is beneficial to the plasticization of the material.
The diameter of the screw in the metering part is smaller, which reduces the heat transfer rate.
Equipped with a quantitative feeding device that matches the extrusion volume to ensure stable extrusion of the product.
There is a magnetic body in the quantitative feeding device to prevent iron debris from falling in and protect the screw.
Due to the conical screw, the cross-sectional area and axial force are small.
Instead, the big end houses large bearings.
Routine maintenance:
After long-term use, iron filings or other impurities from gear grinding will appear in the gearbox.
1. Clean the gears and replace the transmission lubricant.
2. Conduct a comprehensive inspection of the extruder and check the tightness of all screws.
3. If there is a power outage during production, the extruder will not heat and drive..
After power is restored, reheat the extruder to the specified temperature and keep it warm.
4. If the meter and pointer are at full scale, check the integrity of the thermocouple equilateral contacts.
About the Author:
Andy, sales manager of Qingdao Sunshine Machinery Co., Ltd., has been engaged in plastic machinery for 5 years. Familiar with the operation and product features of various types of machines, we can provide you with high-quality services. If you have any needs, you can contact me at any time and look forward to establishing a cooperative relationship!
