In an external gear pump, fluid is drawn through which part?

In an external gear pump, fluid is drawn through the space between the gear teeth. This mechanism operates on the principle of positive displacement, where the rotation of the gears creates a vacuum that pulls the fluid into the pump. As the gears turn, the space between the meshing teeth on the gear surfaces traps the fluid and carries it from the inlet to the discharge.

This process is integral to the functionality of an external gear pump, as the proper interaction between the gear teeth is essential for maintaining flow and pressure. The design allows for consistent and controlled movement of viscous and non-viscous fluids. Understanding this mechanism clarifies why the space between the gear teeth is the entry point for fluid in an external gear pump, making it crucial for its operational efficiency and effectiveness.