Extruder for sludge

摘要

An extruder for sewage sludge is claimed. The extruder consists of a longitudinal pipe (1) connected to a sludge supply (9), a number of outlet openings (5) for the sludge, and a device for pushing out the material which is coupled to a drive (4). The pushing element consists of a scraper (15) which can freely rotate in the pipe (1). The scraper has axial followers bars (11) which are coupled to the drive.