mineral processing pump 7.5 hp

Slurry Pump Maintenance and Possible Failures and Solutions - Support - MIMO Flow Control Co., Ltd

Slurry pump maintenance and possible failures and solutions

1. Maintenance of shaft seal:

Packing shaft seal pumps should regularly check the sealing water pressure and water volume, always keep a small amount of clean water flowing along the shaft, adjust the packing gland regularly, check the packing and replace the packing regularly. The shaft seal water pressure and the shaft seal water volume should meet the above (shaft Seal inspection) requirements.

The auxiliary impeller shaft seal pump equipped with an oil cup should be filled with oil regularly to lubricate the inner packing or lip seal ring.

2. The adjustment of the impeller:

In order to ensure the efficient operation of the 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 sheaths should be equal. When adjusting the impeller clearance, first stop the pump, loosen the bolts that press the bearing assembly, and tighten the nuts on the adjusting bolts to move the bearing assembly forward. At the same time, turn the shaft by hand to rotate in the direction of rotation of the pump until the impeller rubs against the front guard plate. For pumps with metal lining, loosen the nut just tightened by half a turn. Then tighten the front nut on the adjusting 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-lined pump, tighten the nut on the adjusting bolt to make the bearing assembly move first. Move forward to make the impeller contact the front sheath, and then move the bearing assembly backward to make the impeller and the rear sheath contact, and measure the total contact distance of the bearing assembly. This distance is generally taken as the gap between the impeller and the front and rear sheaths. Adjust the position of the bearing assembly with the adjusting bolt to ensure the correct clearance value between the impeller and the front and rear sheaths. After adjustment, before restarting, recheck whether the impeller is rotating normally, whether the bearing assembly compression bolts and adjusting bolts are tightened, and then start the pump.