IWAKI PUMPS PDS-105 RA, Инструкция по эксплуатации

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Overview
Introduction
Pump characteristics, features and part names are described in this sec-
tion.
Introduction
Pump structure & Operating principle
The rotational motion of the stepping motor is changed to linear motion by the direct drive unit. Liquid is loaded
into the pump head and then delivered to a discharge line as the bellows reciprocates.
Principle of operation
● The bellows expands and contracts as the ball screw reciprocates.
● The reciprocating motion of the bellows compresses or expands the shape of the tubephragm via hydraulic
fluid.
● Volumetric change is created in the tubephragm as it is compressed or expanded.
● Liquid is taken in as the tubephragm expands and is pushed out as it contracts in sync with the action of the
check valves (pump head valves).
■ Discharge process
Check valve
Bellows
Stepping motor
(Motor cylinder)
Hydraulic fluid
OUT
Tubephragm
Ball screw