Energy-Efficient Use of Drives Process-Oriented Design of the Main Drive for the Extruder

摘要

The extruder main drive often accounts for just a small portion of the overall purchase costs of an extruder [1 ].However,the operating costs of the machine give the main drive a much more important role in the selection process.Design and procurement must not just be based on the purchase price of the drive package,but crucially must also factor in the overall costs over the service life of the drive system.Veka AG has been heavily involved in drive technology for decades.In the company’s experience,energy efficiency,the quality of the output signals,maintenance and wear exert do have a considerable influence on the economics of a drive system and the entire process.The company has also been studying drive systems(Title figure)on test benches [2] since 2000,seeking to optimize the drives of the roughly 1000 twin and single screw extruders operated by the Veka Group worldwide.It has proved highly adept at this: the annual energy cost savings accruing from the intensive studies are substantially greaterthan the overall expenditure on in-house construction and operation of the test benches.