Dalian multi-stage pump

The obvious difference between Dalian acid resistant pumps lies in the impeller. Single stage centrifugal pumps have only one impeller, while multi-stage centrifugal pumps have more than two impellers. Single stage centrifugal pumps refer to pumps with only one impeller and a maximum head of only 125 meters; When multi-stage pumps require two-stage motors for single stage pump head, four stage motors can be used by increasing the number of impellers to improve pump service life and reduce unit noise.

However, the maintenance of multi-stage pumps is relatively more difficult compared to single-stage pumps. When the actual required head of the pump is less than 125 meters, the choice of single-stage centrifugal pump or multi-stage centrifugal pump can be comprehensively considered based on factors such as the pump room area, pump price (multi-stage centrifugal pumps are generally more expensive than single-stage centrifugal pumps), etc. The total displacement refers to the displacement between the left and right limit positions that the rotor of a multi-stage pump can reach, and the specific value is related to various factors such as the sealing structure, usually around 4mm. Add bearing lubricating oil into the bearing body, and observe that the oil level is at the centerline of the oil gauge. The lubricating oil should be replaced or replenished in a timely manner.