Plunger pump

Details Plunger pump Plunger pump

1997-10-27

1999-03-30

Nguyen, Hoang

Expansible chamber devices

Abutment connection between working member and power...

417470, F16J 110, F04B 1900

Patent

active

058875077

ABSTRACT:
In the inventive plunger pump, a plunger is pressed on a shaft by a spring via a thrust bearing having rolling elements clamped by a pair of bearing washers. By such a configuration, the motion of the shaft is immediately transmitted to the plunger, irrespective of whether the radius of the profile of a cam for driving the shaft back and forth is in the increment phase or decrement phase, so that the suction and discharge of liquid is performed without delay, since no play (or gap) exists in the transmission mechanism between the cam and the plunger. Thus, the fluctuation in the pressure is minimized during the operation of the pump and, when a low pressure gradient elusion is carried out, the solvents are supplied at the desired flow rates accurately.

REFERENCES:
patent: 3118381 (1964-01-01), Keil
patent: 4583921 (1986-04-01), Wolff et al.
patent: 5100305 (1992-03-01), Zirps
patent: 5700135 (1997-12-01), Inokuchi et al.

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