Patent ID: 8893895

Claim:
An improved granulation processor having a coating chamber for coating particles circulating in a fluidized bed in the chamber, the improvement comprising: a rod extending vertically through the chamber and being movable between a raised position for coating particles and a lowered position for cleaning; a filter supported by the rod within the chamber and having a body portion with upper and lower ends; an end cap on the lower end of the filter and being sealed with the filter body when the rod is in the raised position; the filter being sealed at the upper and lower ends when the rod is in the raised position and unsealed at the upper and lower ends when the rod is in the lowered position; a spring on the rod and engaging the end cap; whereby the spring unseals the end cap from the filter body when the rod is in the lowered position to allow drainage of cleaning fluid from inside the filter; and wherein the spring biases the filter body away from the end cap.