patented systems |
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scraper motor |
A patented feature of a Pieralisi decanter is the scraper mechanism.
Pieralisi has developed a patented scraper device removing sticky solids from the solids discharge chamber.
On leaving the dry beach, the solids are discharged from the bowl through a number of holes, into the stationary discharge chamber. Solids are released from the rotating bowl at high speed and tend to stick to the chamber walls. If allowed to continue, the solids discharge chamber will choke completely, causing solids to build up in the machine, until they start exiting at the centrate discharge end.
Alternatively the torque on the scroll will increase to the point where the main motor trips on overload, or the shear pin is broken. In this case the machine will need to be cleaned of solids before it can be restarted, and may require removal of the scroll from the bowl!
