Patent ID: 7469781
Filing Date: 2008-12-30
Classification: B65G

Abstract:
1. A system for conveying solid from a first tank to a second tank comprising: an introduction device which can be connected to the first tank; a first conveying device connected to the introduction device, comprising a first endless screw including a shaft fitted with a projecting helical winding in a first winding direction, and a sleeve in which the first screw is located and is configured to rotate, the sleeve including at least one counter screw including a projecting helical winding on an inner surface of the sleeve and in a second winding direction opposite to the first winding direction; a second conveying device comprising a second endless screw having an axis perpendicular to the shaft of the first endless screw of the first device, and which comprises a helical winding of spirals at least one of which is able to abrade compressed matter; and a discharge device which can be connected to the second tank and which is put into relation with the second device.