Dispensing system for powders comprises outlet tube, in which conveyor screw is mounted, tube being fitted with flexible disk which opens when screw is turning but is self-closing, due to its restoring force

摘要

Dispensing system for powders and granulates comprises an outlet tube (1), in which a conveyor screw (3) is mounted. The tube is fitted with a flexible disk (6) which opens when the screw is turning but is self-closing, due to its restoring force.