Decanter centrifuge with wear-resistant accelerator inserts

A decanter centrifuge comprising:

• a rotatable bowl extending along a centrifuge axis of rotation;
• a rotatable scroll conveyor mounted coaxially within the bowl, said scroll conveyor including a hub, a hub inside surface, a hub outside surface, and a helical winding along the outside surface;
• a feed pipe passing centrally within the hub and leading into a feed chamber within the hub;
• a plurality of nozzles extending radially outward from an internal wall of the feed chamber to the outside surface of the hub;
• and
• a plurality of inserts mounted on the internal wall of the feed chamber, with each insert adjacently mounted between two nozzles;
• wherein
• the feed chamber includes an acceleration cone that opens into a distribution chamber;
• the distribution chamber has an axial length;
• each insert has a length that spans at least most of the length of the distribution chamber;
• each nozzle has a flow inlet that spans at least most of the length of the distribution chamber;
• and
• each insert is mounted between the acceleration cone and the nozzles such that all flow from the acceleration cone to the nozzles passes along an internal surface of an insert.