12
Overview
Introduction
Pump characteristics, features and part names are described in this
section.
Introduction
Pump structure & Operating principle
The IX series are diaphragm pumps with a brushless DC (BLDC) motor and feature a high turndown ratio &
automatic controls.
Principle of operation
In the IX series design, a BLDC motor rotation controls the flow rate.
Motor rotation is transmitted to an eccentric cam through a reduction gear and then converted to reciprocating
motion. Volumetric change occurs in the pump chamber as the diaphragm moves back and forth and liquid is
pumped because of the suction and discharge check valves. Discharge speed changes the flow rate while the
suction speed remains the same at any flow rate.
Control unit
Pump head
Drive unit
Keypads
IN
OUT
Pump head
Pump head valve
(discharge side)
Pump head valve
(suction side)
Eccentric cam
Diaphragm
Brushless motor
