F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/44
F04B 17/00 (2006.01) F01L 25/06 (2006.01) F04B 9/117 (2006.01) F04B 53/00 (2006.01) F04B 53/14 (2006.01) F04B 53/16 (2006.01) F16J 15/18 (2006.01) F16J 15/56 (2006.01)
Patent
CA 1147205
79-198 IMPROVED TANDEM LONG STROKE RECIPROCATING MUD PUMP ASSEMBLY ABSTRACT OF THE DISCLOSURE A diverse fluid pump assembly including a pair of parallel, reciprocating piston-cylinder, motor-pump combinations. The motor-pump combinations are oppositely arranged so that one is pumping while the other is charging. Motor reversal is accomplished through a unique, hydraulically actuated spool valve which is slaved to the common piston rods of the respective, tandem motor-pump combinations. The invention is intended for use primarily as a mud pump for oil well servicing or drilling rigs. Principal components are easily broken down for replacement because of wear and/or size considerations. In a preferred embodiment, the hydraulically actuated spool valve is hydraulically slaved to the motors to effect motor reversal. A unique floating stuffing box is provided on the motor side of each combination which accomodates lateral rod shifting while maintaining a fluid tight seal. The spool valve operates smoothly through five distinct stages during motor reversal thus eliminating any need for a pulsation dampener.
349908
Bender Emil A.
Smart & Biggar
LandOfFree
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