Pumps – With signal – indicator – or inspection means
Patent
1988-05-18
1989-11-07
Vrablik, John J.
Pumps
With signal, indicator, or inspection means
417454, 417539, 417567, 417571, 921711, 1374544, 1375123, 137884, 277115, 277124, 277125, F04B 2102, F16J 1002, F16J 1524, F16K 1500
Patent
active
048788155
ABSTRACT:
A high pressure reciprocating pump has a flange plate or mounting plate secured to the plunger end of a pump drive housing and a suction and discharge manifold is hingedly connected thereto. A stuffing box in bores in the flange plate has a central bore receiving one end of the plunger and forming a plunger pressure chamber coaxial with the plunger. A tapered packing assembly in the stuffing box surrounds the plunger in reciprocal sealing relation. A suction and discharge valve cartridge in one or more valve cavities in the manifold block is coaxial with the plunger. The hinged connection clamps the stuffing box in the flange plate for pivotal movement permitting clear access to the stuffing box and the valve cartridges whereby either may be removed as a unit for easy field maintenance. The valve cartridge comprises a common seat member with a suction valve and a discharge valve movably mounted thereon coaxial with the plunger and positioned concentric and radially spaced on the seat. When assembled, the valve cartridge is mechanically biased in the cavity by the stuffing box. The seat member has seals positioned to seal the cavity and the stuffing box around the pressure chamber. The seals are sized and positioned such that the valve cartridge is hydrostatically biased and urged toward the stuffing box by fluid pressure during operation of the pump plunger.
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Mosely Neal J.
Vrablik John J.
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