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Centrifugal pumps Why is it important to know about centrifugal pumps Who should know about centrifugal pumps The principle of a centrifugal pump Typical parts in a centrifugal pump Sanitary centrifugal pumps Typical range of centrifugal pumps Centrifugal

Why is it important to know about centrifugal pumps Who should know about centrifugal pumps The principle of a centrifugal pump Typical parts in a centrifugal pump Sanitary centrifugal pumps Typical range of centrifugal pumps Centrifugal pump selection Installation Operation and service Troubleshooting Glossary Other handbooks in this series Contents Centrifugal pumps The various aspects of centrifugal pumps are very important to consider when dealing with flow technology and flow equipment Understanding the aspects of centrifugal pumps makes it easier to select correct pumps optimize processes and minimize costs W hy is it important to know about centrifugal pumps Fig Process with centrifugal pump principle CIP Milk CIP Milk A centrifugal pump is typically the most common sanitary pump type used in sanitary processes Benefots include a relatively low purchase cost wide selection simple design and easy maintenance Examples of centrifugal pumps A centrifugal pump is used in processes with non-viscous and non- particulate fluids e g beer CIP cream milk soft drink and purified water There are typically many types of centrifugal pumps available for various types of applications The main parts of a centrifugal pump are motor sha ft adapter shaft seal impeller casing and seals A centrifugal pump is typically selected from a pump curve or a pump selection program Fig Centrifugal pump types principle Fig Centrifugal pump design principle Fig Centrifugal pump selection principle Standard High-clean Multi-stage Casing Impeller Shaft Shaftseal Adapter Motor It is important that the target group knows the various aspects of centrifugal pumps including principle and design available types selection suitability and limitations related to given processes This ensures that processes are optimised and that errors damage and personal injuries are avoided The target group includes Process designers who should know what centrifugal pump types and configurations to select so that the process is optimised related to quality and costs Sales and sales support people who should know the possibilities and limitations of centrifugal pumps related to applications processes in question Field operators who should know the possible causes of centrifugal pump malfunction and know how to solve them Beginners in the flow industry who should have a basic understanding to work efficiently W ho should know about centrifugal pumps All people in touch with flow equipment during its life cycle should know about centrifugal pumps General principle ? Fluid enters the pump casing and impeller center and is forced into a circular movement by the impeller vanes and the centrifugal force The fluid thus leaves the casing with increased pressure and velocity ? Typically suitable for low viscous non-particulate and non-aerated fluids such as beer CIP cream juice milk soft drinks water etc Single-stage principle The fluid inlet the built-up of velocity and pressure and the fluid outlet all happens in one stage one casing and one impeller Multi-stage principle ? Fluid enters the pump casing and impeller center and fluid pressure and velocity are built up in the first stage casing and impeller similar to the single-stage pump ? Fluid