| 摘要 |
PURPOSE: A high-pressure plunger pump is provided to prevent a cylinder from being attached on a plunger shaft by fictional heat using an oilless cylinder, and to replace only plunger by separating the plunger from a shaft. CONSTITUTION: A high-pressure plunger pump comprises a Blush Less Direct Current motor, a crank, a plunger shaft(60), a plunger member(90), a case(50), an elastic spring, and an oilless cylinder(70). The BLDC motor transfers discharging power for pumping. The crank converts the rotational motion of the MLDC motor into a reciprocating linear motion. The plunger shaft is powered by the crank. The plunger member is separably installed in the plunger shaft. The plunger shaft is inserted into the case. The elastic spring sends recovering force. The oilless cylinder covers the outer surface of the plunger shaft inserted into the case.
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