Conveying and lock system
AssigneeNill Tech GmbH
InventorsEberhard Nill, Anton Schmillen
Life of this patent
Estimating the term…
Abstract
A conveying and lock system (10) for introducing a bulk material into a reactor (14) with exclusion of gas and while preventing gas exchange at low pressure differences has a screw shaft (44) on which first windings (46) and second windings (48) are formed. A winding-free section (50) is disposed between the first and the second windings (46, 48) in which the conveyed bulk material is compacted. The compacting causes a bulk material plug which is substantially gas free and, during bulk material transport, the bulk material plug is constantly formed in the conveying and lock system (10) by the screw shaft (44) to prevent gas exchange between the product inlet and the product outlet of the conveying and lock system.
Claims25
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.
A conveying and lock system for the introduction of plastic waste as bulk product into a reactor via a screw shaft while blocking gas and preventing gas exchange at low differential pressures to produce high enemy fuels, 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 said outlet region is jacketed by a tube which is separated from said housing, said tube and said outlet region projecting into the reactor, wherein only said tube dips into a liquid surface formed within the reactor.
Dependencies are inferred from the claim text.