Solid bowl centrifuge with simplified, external adjustment mechanism for weir includes system rotating extraction tool relative to centrifuge drum

摘要

A solid bowl centrifuge comprises an operational adjustment system (50) designed to adjust the unit (40) by rotation of the clearing or extraction tool (20) relative to the drum (12). Preferred Features: The unit is a overflow weir (40) sliding on an end wall (36) of the drum, partially covering openings (38). It includes at least partially ramped, wavy, or stepped overflow sections (40a). The overflow weir is circular, coaxial, and can be rotated through 360 deg . A ratchet-like coupling is included. The clearing tool can be reversed in its rotation relative to the drum. The coupling is a freewheel, with ring disc, gap and latch. Engagement is prevented in freewheeling. Engagement follows reversal for adjustment. The latching arrangement is further detailed. A variant of the design incorporates an epicyclic gear with blocking system and reversibility.