Mixing device with axially movable shaft for maintenance purposes
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United States of America Patent
Stats
-
Dec 23, 1997
Grant Date -
N/A
app pub date -
Nov 2, 1995
filing date -
Nov 3, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for mixing a processing medium with a pulp suspension within a vessel is disclosed, including a housing attached to a wall of the vessel, a rotary shaft extending into the vessel through an opening in the housing, bearings supporting the rotary shaft within the housing, seals for sealing the rotary shaft within the housing, a propeller with a hub attached to the rotary shaft within the vessel, the hub including an extending portion adapted to sealingly engage the opening in the housing, the rotary shaft being axially movable between a normal operating position in which the hub and the opening in the housing are separated by a gap and a sealed position in which the gap is closed and the extended portion of the hub sealingly engages the opening in the housing, and a locking ring for locking the rotary shaft in its sealed position whereby the housing is accessible while the vessel remains filled with the suspension.
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