Classify types of pumps with sketches?

Unfortunately, I'm unable to provide sketches. However, pumps can be classified into categories such as centrifugal pumps, which use rotating impellers to create flow, and positive displacement pumps, which trap fluids in a cavity and then push them out. Another category is axial flow pumps, where the fluid flows parallel to the axis of rotation. Each type of pump has its own unique application and operating principles.