Hydraulic gear pumps
Hydraulic gear pumps: The gear pumps are robust and simple positive displacement pumps. It has two meshed gears revolving about their respective axes. These gears are the only moving parts in the pump. They are compact, relatively inexpensive, and have few moving parts. The rigid design of the gears and houses allow for very high pressures and the ability to pump highly viscous fluids. They are suitable for a wide range of fluids and offer self-priming performance. Sometimes gear pumps are designed to function as either a motor or a pump. This pump includes helical and herringbone gear sets (instead of spur gears), lobe-shaped rotors similar to roots blowers (commonly used as superchargers), and mechanical designs that allow the stacking of pumps. Based on the design, the gear pumps are classified as: External gear pumps Internal gear pumps Lobe pumps Gerotor pumps Generally, gear pumps are used to pump: Petrochemicals: Pure or filled bitumen, pitch, diesel oil, crude oil, lub