| 摘要 |
There is disclosed an improved high pressure pump which includes an improved valve system wherein each of the valve assemblies includes a valve housing having a cup-shaped chamber surrounded by an apertured sidewall, an apertured top wall and a defined open bottom wall, the valve housing further including a peripheral continuous flange carried on the bottom end thereof and extending for a short distance outwardly from the valve housing and having a continuous side edge on an outer surface thereof, the outer surface of the continuous flange provided with a continuous shoulder spaced distance inwardly from the side edge of the flange and bounding the defined open bottom wall of the valve housing, and the valve assembly being completed by a valve cap positioned in arrested arrangement within the valve housing and adapted for reciprocating movement such that the valve cap alternately opens and closes the open bottom wall, and further characterized in that the valve housing including the cup-shaped chamber, the peripheral continuous flange and the continuous shoulder are formed integrally as a one-piece construction. An additional feature of the invention is the provision of a two part plunger arrangement which includes a crank case plunger suction having an inner end for connection to the crank shaft and an outer end including locking means associated therewith, and an outer pump plunger section having an inner end for matingly locking with the outer end of the crank case plunger, and an outer opposed pusher end for contacting the fluid to be pressurized and pumped. The plunger arrangement is further characterized in that locking means are provided for lockingly engaging the crank case plunger section with the pump plunger section in order to permit the removable engagement therebetween.
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