Process for the filtration and drying of solid particles out of liquids
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United States of America Patent
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-
Apr 9, 2002
Grant Date -
N/A
app pub date -
Jun 15, 2000
filing date -
Aug 14, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a housing (1), a hollow shaft (3) is located for rotation, driven by a motor (5). Rigidly attached to the shaft (3) is a pressure vessel (6). Fitted to the shaft (3) inside the vessel (6) is a filter comprising a number of tube-shaped filter elements (9). The liquid to be filtered is fed into an upper chamber (19) of the shaft (3) via an inlet ring (18), and flows through transverse holes (20) into the vessel (6). After passing through the filter (9), the purified liquid is discharged via holes (10) in the hollow shaft (3) through an outlet ring (12). To clean the filter the residual liquid in the vessel (6) is pressed out through the filter with compressed air. Subsequently the deposit adhering to the filter tubes (9) is flung off by rotating the shaft (3) and propelled to the bottom of the vessel by feeding compressed air or clean oil to cleaning nozzles (38). An outlet ring (7) is raised slightly and the deposit at the vessel wall is dried by centrifuging. After opening the ring (7) completely, the dried deposit is flung out through the gap between ring (7) and the vessel base (8).
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