FALL DUCT ARRANGEMENT WITH A DUAL CLEANING DEVICE, IN PARTICULAR FOR A DEVICE FOR GLUING PARTICLES IN THE COURSE OF PRODUCING MATERIAL BOARDS

摘要

A fall duct arrangement (20), in particular for a device for gluing particles which consist at least partly of fibers and/or chips suitable for producing material boards, has a fall duct (21), which has an inlet for supplying the particles and an outlet for discharging the particles, and a scraper (27), which is arranged so as to move relative to an inner wall (21a) of the fall duct (21) in order to clean the inner wall (21a). The fall duct arrangement (20) further has at least one flexible stripping element (22) for cleaning the at least one scraper (27), said flexible stripping element (22) being stretched over the inner wall (21a) in the travel path of the at least one scraper (27). In addition, driving means are provided which are designed to move the flexible scraping element in a direction of the longitudinal extension of the flexible stripping element (22). 1469