Detailed Operation Instructions on How to Adjust the Impeller Clearance

The adjustment of the slurry pump impeller is to ensure the efficient operation of the pump. The following is a detailed explanation of the adjustment of the slurry pump impeller:

In order to ensure the efficient operation of the slurry pump, the gap between the impeller and the front guard plate must be adjusted in time. The gap between the metal-lined pump impeller and the front guard plate is between 0.5-1mm, and the gap between the rubber-lined pump impeller and the front and rear sheath is equal.

When adjusting the clearance of the impeller, first stop the pump, loosen the bolts that tighten the bearing assembly, tighten the nuts on the adjustment bolts, so that the bearing assembly moves forward, and rotate with the hand drive shaft in the direction of the pump. Until the impeller rubs against the front guard, for the metal lining pump, relax the newly tightened nut in front for half a turn, and then tighten the nut on the front of the adjustment bolt to move the bearing assembly backward.

At this time, the gap between the impeller and the front guard plate is between 0.5-1mm. For the rubber lining pump, by screwing the nut on the adjustment bolt, the bearing assembly is moved forward first, so that the impeller contacts the front sheath, and then the bearing assembly is moved backward, so that the impeller contacts the rear sheath, and the total moving distance of the bearing assembly is measured, and half of this distance is used as the gap between the impeller and the front and rear sheath. Then adjust the position of the bearing assembly by adjusting the bolt to ensure the correct gap value between the impeller and the front and rear sheath. After adjustment, before starting again, it is necessary to re-check whether the impeller rotates normally.

The bearing assembly of the slurry pump is tightened by tightening the bolts and adjustment bolts, and then start the pump.

To sum up, it is about the adjustment of the slurry pump impeller.