Patent ID: 6158313
Filing Date: 2000-12-12
Classification: F04B,F23G,Y10T

Abstract:
A method for conveying thick matter containing shredded scrap metal or similar solids using a feed container and a conveyor cylinder having an inlet opening on an inlet side connected to the feed container, a conveyor piston having a forward end and adapted for advancement along a path through the feed container and into the conveyor cylinder during a piston stroke, the inlet opening of the conveyor cylinder permitting passage therein of the conveyor piston during the piston stroke, the method including the steps of:pressing the thick matter from the feed container into the conveyor cylinder during forward movement of the conveyor piston along the path during a piston stroke, such pressing of the thick matter being capable of cutting off solids in the feed container projecting over the inlet opening at the inlet side of the conveyor cylinder as the conveyor piston advances along the path through the feed container and the forward end of the piston enters into the conveyor cylinder;increasing the feeding force of the conveyor piston when a first specified pressure in a medium that drives the conveyor piston is exceeded;retracting the conveyor piston when(a) the medium that drives the conveyor piston exceeds a second specified pressure greater than the first specified pressure to create a suction in the feed container for causing shifting of a solid body preventing movement of the piston, or(b) the conveyor piston has reached a position corresponding to a complete extension of the conveyor piston during a piston stroke; andrepeating forward movement of the piston after retraction thereof.