Submersible canned motor mixer pump

Patent · Wed Jan 01 04:00:00 EST 1997

OSTI ID:871166

Guardiani, Richard F ^[1]; Pollick, Richard D ^[2]

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1. Ohio Township, PA
2. Sarver, PA

A mixer pump used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass therethrough, thereby resisting damage to and the interruption of the operation of the mixer pump.

• Research Organization: Westinghouse Hanford Co
• DOE Contract Number: AC06-87RL10930
• Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
• Patent Number(s): US 5674057
• OSTI ID: 871166
• Country of Publication: United States
• Language: English

Related Subjects

/417/366/
active liquid
adjacent
assemblies
assembly
assembly containing
bearing
bearing assemblies
bearing surface
bearing surfaces
cables
canned
canned motor
clearances
column
column assembly
connected
containing
cool
creates
damage
electric
electric motor
flow
forces
grind
hard-on-hard
head
high-level
high-level radioactive
housing
hydraulic
impeller
impeller assembly
interruption
larger
larger particles
level radioactive
liquid
liquid waste
locates
lubricate
means
means adjacent
mixer
mixer pump
mobilizing
motor
motor housing
motor means
operation
particles
pass
pass therethrough
power
power cable
power cables
pump
radial
radial bearing
radioactive
radioactive liquid
received
resisting
rotor
rotor assembly
shaft
slots
solid
solid waste
static
static bearing
stator
stator assembly
submersible
submersible canned
surfaces
tank
therethrough
thrust
thrust bearing
waste
waste particles
waste tank