Centrifugal pump impellers are normally selected depending on the application. Some of the pumps are idle for dealing with solids while others perform best when it comes to high efficiency. This article will explore in detail to let you understand which is the best centrifugal pump for a particular application
open impeller
An open impeller consists of vanes which are attached to the middle hub and mounted directly upon the shaft. The vanes have no walls that surround them. This makes the open impellers weaker as compared to the semi-closed valves.
Open impellers are normally faster and very easy to clean and repair. Normally small pumps are idle for open impellers. Besides, open impellers are the best at handling suspended solids and hence are idle for pumps that deal with such tasks.
Semi-closed Impeller
This has a back wall that is responsible for strengthening the impeller. Normally you will find this in a pump that is designed for liquids or fluids that contain solids. There is a fall in efficiency when it comes to semi-closed impellers. Their positive side is that they have a high ability to deal with solids.
Closed impellers
These consist of a back and front wall that surrounds the vanes, which increases their strength. These are specifically used in larger pumps and they are idle in applications that involve liquids and fluids with suspended solids.
These are normally used when dealing with a clear liquid. They are not good when it comes to solids as they are so difficult to clean when they become clogged.
Conclusion
As elaborated above on the application of each design, buying a centrifugal pump depends on the application. Each impeller design works better for a specific application. The pump will fail when exposed to do what it was not designed to do.
In case you still do not know what to choose when it comes to your next pumping application. Visit or call us and we will be happy to serve you. We are the most experienced manufacturers and suppliers of centrifugal pumps on the market.
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