How Does a Hydraulic Gear Pump Work?

Written by isaiah david
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How Does a Hydraulic Gear Pump Work?
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A hydraulic gear pump is a device used to pump hydraulic fluid to power hydraulic motors and actuators. Hydraulic gear pumps have two gears meshed together and sealed inside a case. Usually, the gears meet together in the middle, although there are other possible layouts. At one end, there is an inlet valve and at the other end an outlet valve.

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Hydraulic Gear Pump at Work

The hydraulic gear pump is attached to a diesel or gasoline motor, which provides power to turn it. The gears turn in opposite directions, each pushing fluid around the outside of the case from the inlet valve to the outlet valve. Because they mesh in the middle, the gears don't carry fluid back in the other direction but continuously move fluid toward the outlet.

The Gear Pump in the Hydraulic System

The gear pump drives the hydraulic system as a whole. It draws fluid out of a reservoir and pumps it into a pressurised tube. The hydraulic gear pump is run at a constant speed to provide continuous pressure, and that pressure can drive a variety of different hydraulic devices. A single outlet valve can be split to power several hydraulic pistons and rotating motors. For example, a crane can move its arm, turn, drive, and raise and lower a winch using a single system.

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