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gear pump
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Figure 1: External gear pump Figure 2: Internal gear pump
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gear pump

mechanics
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Quick Summary

Figure 1: External gear pump
Figure 1: External gear pump

A gear pump is a type of rotary pump that uses two meshing gear wheels within a casing. As the gears rotate, they draw fluid in on one side and discharge it on the other. This mechanism is a form of positive displacement, meaning it moves a specific volume of fluid with each rotation. Gear pumps are part of a broader classification of pumps that impart energy to fluids, including those that add kinetic energy or use electromagnetic force. They are suitable for pumping liquids that contain vapors or gases and rely on the pumped liquid for lubrication, making them unsuitable for pumping gases themselves.12

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