Main Parts of A Centrifugal Pump-MISSION Type Centrifugal Pump

To operate properly, a standard centrifugal pump relies on several key components:

An impeller.

Casing.

Shaft and shaft sleeves.

Bearings.

Mechanical seals, Packing, and Casing Cover.

Each centrifugal pump is made of hundreds of parts. There are a few components that virtually every centrifugal pump has in common.

The wet end of the pump includes those parts that determine the hydraulic performance of the pump. The two primary wet ends are the impeller and casing. In some cases, the first radial bearing can be water lubricated. In this case, also bearing can belong to wet ends.

The mechanical end includes those parts that support the impeller within the casing. The mechanical end of the pump includes the pump shaft, sealing, bearings, and shaft sleeve.

Types of Impellers in Centrifugal Pumps

open, semi-open, closed impellerImpeller design is the most significant factor for determining the performance of a centrifugal pump. A properly designed impeller optimizes flow while minimizing turbulence and maximizing efficiency.

The impeller of a centrifugal pump can be of three basic types:

Open impeller.

Open impellers have the vanes free on both sides. Open impellers are structurally weak. They are typically used in small-diameter, inexpensive pumps and pumps handling suspended solids.

Semi-open impeller.

The vanes are free on one side and enclosed on the other. The shroud adds mechanical strength. They also offer higher efficiencies than open impellers. They can be used in medium-diameter pumps and with liquids containing small amounts of suspended solids. Because of the minimization of recirculation and other losses, it is very important that a small clearance exists between the impeller vanes and the casing.

Closed impeller.

The vanes are located between the two discs, all in a single casting. They are used in large pumps with high efficiencies and low required Net Positive Suction Head. The centrifugal pumps with closed impellers are the most widely used pumps handling clear liquids. They rely on close-clearance wear rings on the impeller and the pump casing. The closed impeller is a more complicated and expensive design because of the impeller, but additional wear rings are needed.

In our MISSION Type Centrifugal pumps, we can supply both Open & Semi-open impellers.

And the casing materials can be cast Iron or stainless steel as per the clients requests.

If you want to replace your Centrifugal pumps, please contact our sales team for more details!