Pumps – Expansible chamber type – Valved piston
Patent
1983-11-16
1985-02-19
Smith, Leonard E.
Pumps
Expansible chamber type
Valved piston
91 39, 92171, 417342, 417390, F16J 1004
Patent
active
045002673
ABSTRACT:
A multicylinder, double acting improved mud pump is disclosed, the preferred embodiment incorporates a hydraulic powered piston in a cylinder which connects with a piston rod which, in turn, drives a second piston in a cylinder adopted to pump fluid mud. The first piston is driven by hydraulic oil delivered under pressure to intake manifolds through an independently driven valving apparatus which times the delivery of the hydraulic fluid for the main power stroke and further times the discharge of the hydraulic fluid for the return secondary power stroke, the system being controlled independently of piston action in timing of multiple pistons in multiple cylinders by the valve system. Additionally an intake valve delivers fluid mud at lower pressure on the intake side of the mud compression piston, and an outlet valve traverses with the piston rod to direct the outlet mud flow. Additionally a mud piston is provided which defines a first compression chamber for receipt of incoming fluid mud and a second compression chamber for discharge of pressurized fluid mud. Additionally the outlet flow valve being contained within the confines of the mud piston and additionally the unidirectional flow valve being operatively controlled by the movement of the mud piston driving rod.
REFERENCES:
patent: 2168131 (1939-08-01), Mader
patent: 2198301 (1940-04-01), Campbell
patent: 4184411 (1980-01-01), Morris et al.
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