How do you adjust the impeller on a slurry pump?

How to adjust slurry pump impeller

How to adjust slurry pump impeller

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In order to ensure the efficient operation of slurry pump, you have to promptly adjust the gap of slurry pump impeller and throat bush. Metal slurry&#;pump&#;impeller and throat&#;bush gap can between 0.5-1mm and rubber lined slurry&#;pump impeller should be in the middle of cover plate liner and frame&#;plate&#;liner.
Stop the pump before slurry pump impeller gap adjustment, loosen the bolts of the bearing assembly , tighten the nut on the bolt, then the bearing assembly will be moved forward while rotating the shaft by hand according direction of rotation until the slurry&#;pump&#;impeller next to throat&#;bush.
For the metal slurry&#;pump just need to loosen the tighten nut semi-circle and also tighten the front nut, make the bearing&#;assembly moves back a little, then the gap between slurry pump impeller and throat bush will be about 0.5-1mm.
For rubber slurry&#;pump&#;impeller adjustment, you should first tighten the adjust nut to make bearing assembly move forward, and then move back to get the right size between cover&#;plate&#;liner and frame&#;plate&#;liner , then adjust the impeller in the right middle position between them.
After adjustment, must re-examine the normal rotation of the impeller, the bearing&#;assembly and adjustment bolts are tightened the bolts before starting slurry&#;pump again.

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1. If it is a pump with a mechanical seal, first reset the positioning card, and then loosen the locking screw of the shaft sleeve;

2. Loosen the four clamp bolts and nuts on the bearing assembly;

3. Loosen the adjusting bolt of the bearing assembly on the base;

4. Rotate a nut first until the impeller sticks to the throat bush and cannot be rotated (turning the pump in the direction of the pump rotation);

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5. Slowly adjust the other nut until the impeller can rotate normally (turning the pump in the direction of the pump rotation), and no friction with the frame plate and cover plate.

6. Finally, lock the adjusting bolt.

7. Tighten the four clamp bolts and nuts on the bearing assembly;

8. Tighten the locking screw of the shaft sleeve;

9. Finally, take out the positioning card.

(Note: No.8, and No.9 operation steps are for pumps with mechanical seals)

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