MODULAR MULTISIZE BIDIRECTIONAL SCRAPING DEVICE

摘要

The present invention relates to a device (10) for scraping the inner walls of a pipeline. The device comprises i) a flexible shaft (16), ii) a plurality of groups of flexible radial scraping bars (14) which are spaced apart and offset angularly so that the said bars are able to scrape substantially the entire inner surface of the said pipeline, and iii) at least one flexible sealing module (12A, 12B).