METERING PUMP OF HYDRAULIC BYPASS TYPE

摘要

A metering pump of a hydraulic bypass type is disclosed. The disclosed metering pump of the hydraulic bypass type includes a driving unit for generating a pumping force by the applied power; a bypass unit for reciprocating hydraulic fluid by the pumping force of the driving unit; a contact liquid unit for pumping the fluid by the hydraulic fluid; and a fluid transfer unit in which the fluid is transferred by the contact liquid. The bypass unit includes a driving load unit connected to be reciprocating in the driving unit by the pumping force; a piston unit connected to the driving load unit for reciprocating the hydraulic fluid; an opening/closing block unit for supporting the driving load unit or the piston unit to be reciprocating; and an opening/closing control unit formed in at least one among the driving load unit and the piston unit to bypass the hydraulic fluid according to the reciprocating movement of the driving load unit or the piston unit.