Knowledge of centrifugal pump flow parts

1) Centrifugal pump structure classification rules

The structure of the centrifugal pump is classified according to a variety of rules, from the rotation part is divided into the rotor part and the stator part, from the medium flow aspect is divided into the flow parts and non-flow parts, from the overall point of view of the pump is divided into the pump body part and the pump head part, this paper mainly explains the flow parts from the medium flow.

2) Knowledge of centrifugal pump flow parts

When the centrifugal pump is transporting the medium, it is generally believed that any part contacted by the medium has become a flow part, including the inlet and outlet, impeller, guide vane, shaft, bearing, pump body, seals, etc. that have contact with the medium are collectively referred to as the flow part. The flow parts in the narrow scope refer to the rotor parts that contact with the medium after entering from the water inlet end (note: rotor parts) mainly include: impeller, shaft, bearing, seal and other parts.

3) Understand the significance of the flow parts of the centrifugal pump

Whether it is under the broad scope or the narrow scope of the flow parts, it shows that in the centrifugal pump, the flow parts occupy the main structural position of the centrifugal pump, different media, its material requirements are different, because of this, the centrifugal pump parts are separated from the flow parts, in order to reduce the waste of resources to a greater extent, reduce costs, Improve the economic benefit of centrifugal pump. For example, if the centrifugal pump containing corrosive media is not classified according to the flow parts, the pump as a whole needs to be made according to the corresponding material, which is a serious waste of resources and also increases the production cost. However, if only the flow part of the centrifugal pump is selected with the material it wants to use, it will achieve great benefits in cost, and the operation effect of the centrifugal pump is not about the effect of the former.

4) How to correctly use the flow parts of the centrifugal pump

According to the conveying medium pH, temperature, viscosity, whether it contains solid particles and other specific conditions, the selection of the corresponding material, as for the selection of the material of the flow parts, the centrifugal pump pump body and the inlet and outlet water end can be determined according to the specific situation.