Patent ID: 8282332
Filing Date: 2012-10-09
Classification: B01J,B65G,C10G

Abstract:
1. A conveying and lock system for the introduction of a bulk product into a reactor while blocking gas and preventing gas exchange at low differential pressures, the system comprising: a housing having an inlet opening and an outlet opening; a screw shaft disposed within said housing to transport the bulk product from said inlet opening to said outlet opening, said screw shaft having a plurality of first windings disposed in an inlet region thereof, a plurality of second windings disposed in an outlet region thereof, and a winding-free section disposed in an axial direction between said inlet and said outlet openings, said first windings having a first transport capacity of bulk product which is equal to or in excess of a second transport capacity of said second windings, wherein said screw shaft has a compression zone in a transport region of said screw shaft between said inlet and outlet regions; and a plate cooperating with said screw shaft at said outlet region for closing or opening said outlet region to differing degrees, wherein the conveying and lock system has a hollow shaft on which said screw shaft is disposed, said hollow shaft comprising an axially displaceable rod having a plate at a free end thereof which, in a first end position, closes said outlet opening and, in a second end position, frees a transport capacity of said screw shaft in a completely unthrottled fashion, wherein said hollow shaft ends in a bellows in a direction of said plate.