Fluid end for reciprocating pump

Details Fluid end for reciprocating pump Fluid end for reciprocating pump

1990-08-27

1991-10-29

Smith, Leonard E.

Pumps

Expansible chamber type

Valved piston

417454, 417569, F04B 2104

Patent

active

050611593

ABSTRACT:
A pump apparatus for moving fluid, such as drilling mud. The pump has a special designed fluid end of a configuration that reduces stress riser and therefore reduces the frequency of broken pumps. The pump has a cylindrical liner within which a special piston reciprocates. A stationary discharge valve of special design is connected to discharge fluid from the pump working chamber. A traveling valve is included in the piston and supplies fluid to the working chamber of the pump. The traveling and stationary valves each have a seal that also forms part of a valve seat. Each of the valve elements is a hollow ball and each ball is sealingly seated against the seat. The pump liner, piston, and discharge valve assembly are all axially aligned and can be easily removed from the discharge end of the pump.

REFERENCES:
patent: 3446156 (1966-11-01), Lightfoot
patent: 3465787 (1969-09-01), Gulick
patent: 4541779 (1985-10-01), Birdwell
patent: 4945945 (1990-08-01), Schmid

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