Suspension pump with built-in variably eccentric liquid ring pump
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United States of America Patent
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Nov 22, 1994
Grant Date -
N/A
app pub date -
Jun 14, 1993
filing date -
Dec 19, 1990
priority date (Note) -
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Abstract
A pump for pumping pulp, comprising a first impeller (12) for pumping the pulp in fluidized state, and a gas evacuation pump (23) of liquid ring type comprising a pump housing (24) with a chamber (25) and a second impeller (26) rotating therein for evacuating gas collecting in front of said first impeller (12) via a system of channels (20, 21, 22), said impellets (12, 26) being mounted on the same shaft (4) for common rotation. According to the invention the chamber (24) of the gas evacuation pump (23) containing a rotating liquid ring (29) is defined circumferentially by an element (40) which is movable in relation to the second impeller (26) and the axis of rotation (5) thereof by means of an actuator (48, 50, 51), said element (40) being adjustable by the actuator (48, 50, 51) in three different operating positions dependent on the operating conditions prevailing for the pump.
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