Title:
LIQUID CLEANING MEANS FOR WEARING RINGS OF CENTRIFUGAL PUMPS AND WEARING RING ASSEMBLY AND WEARING RINGS FOR SAID CLEANING MEANS
Document Type and Number:
Japanese Patent JPS52140903
Kind Code:
A
Abstract:
A flushing liquid system for an improved wearing ring in a centrifugal pump which wearing ring has spaced flushing liquid inlet and outlet chambers, has a first control assembly for supplying flushing liquid to the flushing liquid inlet chamber and a second control assembly for returning or draining at least a portion of the flushing liquid through the flushing liquid outlet chamber, with respective first and second control assemblies either having a predetermined setting or operatively responsive to signals from sensory devices for sensing at least one or more operating conditions of the centrifugal pump to that the operation of the first and second control devices can act to minimize flushing liquid requirements of the wearing ring and minimize dilution by the flushing liquid of the process fluid or mixture being pumped by the centrifugal pump. Additionally, the improved wearing ring for use in said flushing liquid system having a first groove of the outer surface thereof operative to form the flushing liquid inlet chamber connected to the source of flushing liquid, a second groove on the outer surface of the wearing ring disposed a spaced distance from said first groove operative to provide the flushing liquid outlet chamber, a plurality of first and second passages to communicate the respective first groove and second groove with the leakage joint formed by said wearing ring with the impeller for said centrifugal pump, said first groove and second groove operative to permit at least a portion of the flushing liquid delivered from said first groove to be returned or drained through the second grove. Additionally, means formed in the leakage joint between the improved wearing ring and the impeller of the centrifugal pump to resist axial flow of the process fluid being pumped by the centrifugal pump into the leakage joint from either direction.
Inventors:
CHIYAARUSU ETSUCHI TAU
IGOORU JIEI KARASHIKU
IGOORU JIEI KARASHIKU
Application Number:
JP11607576A
Publication Date:
November 24, 1977
Filing Date:
September 29, 1976
Export Citation:
Assignee:
WORTHINGTON PUMP
International Classes:
F04D7/04; F04D29/16; F04D29/70; (IPC1-7): F04D29/70