Hale SMR - Manual (Page 19)

Stainless Max Series Pumps 2-5
Introduction
PUMP COMPONENTS - SM SERIES
Stainless Max pumps are made up of:
❑ Pump Body
❑ Impeller and Shaft
Assembly
❑ Mechanical Seal
❑ Gearbox
Figure 2-5: “Overview of
Hale SM Pump,” on the
next page, shows these
basic pump parts.
These parts are briefly
described in this section.
Pump Body
The Hale SM series
pump body consists
of a volute body
pump head and front clearance ring. The pump body is constructed
from corrosion resistant stainless steel.
The pump body is a single piece. Service of the impeller, clearance
rings, and mechanical seal is accomplished by removing the pump
body. This can often be accomplished without removing the entire
pump and gearbox assembly from the apparatus.
The pump has a suction inlet on the front. The incoming fluid is
directed to the impeller through the suction piping.
Impeller and Shaft Assembly
A high quality, stainless steel impeller provides velocity to the water.
This part is mounted on a stainless steel shaft that is rotated by the
gearbox. (See Figure 2-2: “Pump Impeller” on preceding page 2-3.)
The water enters the rotating impeller at the intake (or eye), and is
confined by the shrouds and the impeller vanes to build pressure.
The vanes guide the water from the inlet to the discharge. Vanes
curve away from the direction of rotation so the water moves toward
the outer edge. The shrouds form the sides of the impeller and
keep the water confined to centrifugal acceleration.
Figure 2-5: Overview of Hale SM Pump
Mechanical
Seal
Pump Body
(Volute)
from
Gearbox
Impeller