Could you show me Diagrams of different types of hydraulic pumps?

I can't create or display diagrams directly, but I can describe different types of hydraulic pumps. Common types include gear pumps, which use meshing gears to move fluid; vane pumps, which use sliding vanes to create pressure; and piston pumps, which use reciprocating pistons to generate high pressure. Each type has its unique design and operating principle suited for various applications in hydraulic systems. For diagrams, you might consider checking engineering textbooks or reliable online resources.