Abstract: Disclosed is a device for improving the method of manufacturing Archimedes screws by assembling sectors on a shaft without forming gaps, cutting edges or weak regions between one another and ensuring the continuity of the turns of which the screw consists. It consists of a sector having a turn with a length equal to one screw thread and having a geometry that enables it to be interlocked with another, identical sector. The turn sits on a core, the geometry of which is obtained by following in each case a helical generatrix which is offset through at least one turn thickness. The terminal face of the turn is inclined at an angle with respect to the axis of the sector. The device according to the invention is particularly intended for the production of systems for metering or pumping viscous, pulverulent or granular products, the systems including at least one Archimedes screw.

Abstract: Disclosed is a device for improving the method of manufacturing Archimedes screws by assembling sectors on a shaft without forming gaps, cutting edges or weak regions between one another and ensuring the continuity of the turns of which the screw consists. It consists of a sector having a turn with a length equal to one screw thread and having a geometry that enables it to be interlocked with another, identical sector. The turn sits on a core, the geometry of which is obtained by following in each case a helical generatrix which is offset through at least one turn thickness. The terminal face of the turn is inclined at an angle with respect to the axis of the sector. The device according to the invention is particularly intended for the production of systems for metering or pumping viscous, pulverulent or granular products, the systems including at least one Archimedes screw.