Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1989-06-26
1991-05-07
Smith, Leonard E.
Pumps
Three or more cylinders arranged in parallel, radial, or...
417DIG1, F04B 114
Patent
active
050132199
ABSTRACT:
A high pressure, positive displacement piston pump for pumping a corrosive fluid is disclosed. The pump includes a pump body having a plurality of cylinders therein, each provided with an inlet and an outlet. A suitable one-way valve device is disposed in a connection between the inlet and the cylinder, and another oppositely directed one way-valve device is disposed in a connection betweenn the outlet and each cylinder. A piston is disposed in each cylinder for reciprocal movement therein in order to pump the fluuid from the inlet to the outlet. A cam device moves each piston reciprocally and includes a rotating member having a first camming surface which is cylically rotated adjacent an end of each piston. At the end of each piston, a second camming surface is provided which engages the first camming surface. A cooling system is also provided for cooling and lubricating the first and second camming surfaces with a coolant liquid in contact with the bearing surfaces within the pump. The coolant liquid can be and in the preferred embodiment is the corrosive liquid being pumped. A shaft is preferably used for rotating the rotating member and a suitable journaling device is provided for the shaft. The shaft is also non-corrodible, and the coolant liquid also cools and lubricates the journaling device as well as the shaft.
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Cole-Parmer Catalog, 1985-1986, pp. 554-556.
Hicks Douglas C.
Pleass Charles M.
Smith Leonard E.
The University of Delaware
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