Principle of Gear Pump Operation
A gear pump is a type of rotary positive displacement (PD) pump that uses a pair of interlocking gears to deliver liquid from one side of the pump to the other. Gear pumps are designed to increase pressure on one side of the pump, forcing the liquid through an outlet on the other side. Gear pumps are used in a wide variety of applications, including automotive, agriculture, and industrial.
The principle of gear pump operation is relatively simple. The two gears are mounted on independent shafts within a common housing. As one gear rotates, it draws liquid into the housing. The liquid then moves between the two meshing gears and is trapped in between their teeth. As the gears turn, the trapped liquid is forced out of the discharge port. The pressurized liquid is then available for use in its intended application.
One of the primary benefits of the gear pump is the ability to produce a steady flow of liquid, even if the pump is not operating at a constant speed. This is due to the nature of the gearing within the pump. As one gear is turning, the next gear is always at a fixed point. This ensures that the same volume of liquid will be drawn into the housing after each revolution. This makes gear pumps popular for applications that require a constant, reliable flow.
Gear pumps are also capable of handling a wide range of liquids, including highly viscous fluids. The effectiveness of a gear pump is determined by its ability to form a seal between the gears and the pump housing, and to capture the liquid between each gear tooth. This is why the pump housing and shafts must fit tightly together and be composed of wear-resistant materials.
Gear pumps also offer a number of advantages over other types of pumps, including their ability to handle solids with ease. As the gears within the pump are interlocking, any solids that enter the pump will be compressed between the teeth of the gears and be effectively squeezed through the pump. This makes the gear pump an ideal choice for applications in which solids must be moved.
Gear pumps are also easy to maintain and typically have a long life span. This is because the gears are self-lubricating, so they need minimal attention. Most pumps also have generous clearance between the gears and the pump housing, allowing them to run smoothly for extended periods of time.
Gear pumps are one of the most popular types of PD pumps due to their reliable performance and long life span. They are a preferred choice for applications that require a constant flow of liquid and can handle solids with ease. With minimal maintenance, they can provide years of reliable service.
