| 摘要 |
A reciprocating apparatus for pumping pressurized fluid. The reciprocating apparatus comprises a plunger (18) disposed within a cylinder (36), wherein the plunger (18) is hollow and ported for enabling fluid within the cylinder (36) to flow into the plunger (18). The plunger (18) includes at least one outlet (70) through which fluid within the plunger (18) flows out of the plunger (18). In operation, the plunger (18) retracts to displace fluid from the hollow body (66) and into a discharge chamber, and the plunger (18) extends towards the discharge chamber to discharge the displaced fluid. As the plunger (18) alternately retracts and extends, fluid within the plunger continuously flows towards the discharge chamber. |
