Case Study 02  ·  Pulp mill pump stand

A pump stand that comes apart in the right order

The stand it replaced had two problems. It was carbon steel in a wet mill, so it was rusting out from underneath. And the motor sat directly above the pump, which meant any pump work started by pulling the motor.

Engaged by Industrial Manufacturing, Albany GA, for a pulp facility. Scope: design a replacement stand for an existing slurry pump and motor, released as a build-ready package. Fabrication and installation by others.

The motor stays put

The pump lifts straight off its own deck with nothing above it. On the stand it replaced, the motor came off first — every time.

The constraint

Stacking the motor over the pump cost them twice

A slurry pump in a pulp mill is a wear part. The impeller and liners see abrasive stock all day, and the pump comes out on a schedule whether anybody likes it or not. So the question that matters about a pump stand isn't how it looks on day one. It's what has to happen the next time that pump needs to come out.

On the old stand, what had to happen was: disconnect the motor, unbolt it, lift it clear, and only then start on the pump. Two lifts instead of one, in a tight spot, before the actual job began.

Underneath that, the stand itself was failing. Carbon steel in a mill environment rusts from the fasteners and the weld toes outward, and a corroding base under a pump that has to stay aligned to its drive is a problem that compounds.

Replacing it was an opportunity to fix the geometry, not just the metal. A new stand that stacked the same way would have solved half the problem and locked in the other half for another twenty years.
The change

Give each machine its own deck

The pump sits low, on the main deck. The motor sits behind and above it, on a raised platform of its own, driving across the gap by belt. Nothing is stacked on anything.

Splitting them does more than clear the lift path. It puts the motor up out of washdown and floor spray, it opens the pump up on every side for a wrench, and it lets the belt drive be tensioned and guarded as its own assembly instead of being buried in the middle of a stack.

Ghosted 3D view of the pump stand from the pump end, showing the pump on the lower deck and the motor on a raised platform behind it.
From the pump end. Low deck carries the pump, raised platform carries the motor, guard spans the drive between them.
Ghosted 3D view from the motor end, showing the motor sub-plate and tensioning hardware.
From the motor end. The motor rides a sub-plate with jack bolts bearing on a cross rail — belt tension set with a wrench, by one man.
Design for maintenance

It disassembles in the order the work happens

Guard off. Belt off. Then the pump, straight up, with clear air above it. The motor never has to move, and it never has to be re-aligned because it was never disturbed.

If the motor is what needs attention instead, it comes off as a unit with its own sub-plate, leaving the pump bolted down and the piping untouched.

Exploded 3D view showing the guard, the motor with its sub-plate, and the pump separating from the frame independently.
Exploded. Guard, motor-and-plate and pump each come away on their own — no component is trapped under another.
Built for the room it lives in

Stainless all the way through, guard included

Frame, decks, motor sub-plate, guard and hardware are all stainless. Putting a carbon steel guard on a stainless stand would have reintroduced the original failure on the one part people take off and put back the most.

The guard is a bolted enclosure, not a welded box — expanded mesh on the sides so the drive stays visible and ventilated, formed solid across the top where things fall. It lifts off for a belt change and goes back on with the same fasteners.

Feet are gusseted base plates drilled for concrete anchors, so the stand is fixed to the floor and holds its alignment under load.

The stainless belt guard installed between the motor and the pump.
Guard in place. Solid formed top, bolted flanges at the base.
Close view of the expanded metal panel on the side of the guard beside the pump bearing housing.
Expanded mesh sides. The drive can be seen and heard without taking anything apart.
The assembled pump and motor on the stainless stand before the guard was fitted.
Assembled before guarding. The split-level arrangement with the drive gap between the two decks.
The completed stand with pump, motor and guard fitted.
Complete. Pump low and open, motor up and dry, drive enclosed.
Side elevation of the finished stand showing both decks and the guard.
Side on. Both decks and the lift path above the pump.
The cut package

Every part, cut to length and ready to fit

The stand breaks down into plate and rectangular tube. Tube is cut to length with the copes and end treatments already in the file; plate parts are profiled with their hole patterns, including the shaft openings in the guard panels.

That is what gets handed over — a set a fabricator can take straight to the table without redrawing anything or working out what goes where.

Exploded parts layout showing every plate and tube component of the stand separated out.
Full part breakdown. Plate profiles, guard panels and tube lengths, each released as a cut part.
Full dimensioned shop drawings, hardware schedules and cut files come with the package. They go to you, not on a website.
Project record
Client
Industrial Manufacturing  ·  Albany, GA
Site
Pulp facility
Role
Design only  ·  fabrication and installation by others
Equipment
GIW slurry pump  ·  TEFC motor, belt driven
Problem
Carbon steel stand corroding; motor stacked over pump blocking removal
Result
Pump removable without disturbing the motor; stainless throughout
Material
Stainless plate and rectangular tube
Assembly
Welded frame  ·  bolted guard  ·  anchored to floor
Drive
Belt, tensioned by jack bolts on the motor sub-plate
Software
Rhino 3D
Delivered
3D model, shop drawings, cut files, hardware schedule
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