F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/104, 103/116
F04D 1/00 (2006.01) F04D 1/06 (2006.01) F04D 5/00 (2006.01) F04D 29/42 (2006.01)
Patent
CA 1063872
MULTI-STAGE PUMP Abstract of the Disclosure The segmented casing has a plurality of successive stage casing rings, a transfer plate intermediate each adjacent pair of casing rings, a suction end casing section, and a dis- charge end casing section. A shaft extends axially through the casing, and is supported and sealed at its ends by demount- able bearing and seal means. Each casing ring encloses a complete stage containing an impeller which is spring biased into engage- ment with a locating collar secured to the shaft, and a pair of replaceable liners which are arranged at the opposite sides of each impeller. Each casing ring, impeller, set of liners, locating collar, and spring means, together comprise a module which functions as one stage of the pump. A pump is comprised of two or more modules which are connected internally by a shaft and externally by draw bolts, and which are contained by the suction and discharge end casing sections. Suction and discharge connections are demountably secured to the casing in any one of several rotative positions.
238037
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