Agitating – Stirrer within stationary mixing chamber – Pump type
Reexamination Certificate
2007-01-30
2007-01-30
Cooley, Charles E. (Department: 1723)
Agitating
Stirrer within stationary mixing chamber
Pump type
C366S291000, C366S307000, C366S315000
Reexamination Certificate
active
11049928
ABSTRACT:
An agitation system for producing a slurry, mixture, or solution from addition of dry solids to a liquid is provided. A first tank has a first longitudinal axis, a static liquid level, a dynamic liquid level, and a holdup. A solid inlet is configured to feed dry solids into the first tank. A first drive shaft is disposed in the first tank generally along the first longitudinal axis and a first impeller is attached to the first drive shaft at a first location. The first impeller is configured to pump material in a generally upward direction. A second tank having a second longitudinal axis is in fluid communication with the first tank. A second drive shaft is disposed in the second tank generally along the second longitudinal axis and a second impeller is attached to the second drive shaft at a first location and a third impeller is attached to the second drive shaft at a second location. The second impeller is configured to direct flow toward the third impeller, and the third impeller is configured to direct flow toward the second impeller. A pumper impeller is attached to the second drive shaft so that the second impeller is in between the pumper impeller and the third impeller and a separator disc is attached to the second drive shaft in between the pumper impeller and the second impeller.
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Baker & Hostetler LLP
Cooley Charles E.
SPX Corporation
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