The calculation of these two parameters is the basis for selecting hydraulic systems and matching working conditions (such as calculating working pressure based on load and selecting motors that match rated pressure; calculating displacement based on speed and flow rate to ensure sufficient power).

The working principle of gear pumps (volumetric suction and discharge, quantitative high pressure, adaptability to high viscosity, strong self-priming ability) determines that they can adapt to the needs of "stable fluid transportation, especially in viscous/high-pressure scenarios" in daily life - from cars for daily travel, to industrial production, food processing, and even outdoor work tools, the practical application of their principles can be seen.

The core working principle of a gear pump is "volumetric suction and discharge" - by rotating a pair of meshing gears, a periodic sealed chamber volume change is formed inside the pump body. Through the process of "vacuum suction and extrusion discharge", mechanical energy is converted into pressure energy and kinetic energy of the fluid, achieving directional fluid transportation.

Gear pump is a type of volumetric fluid machinery, whose core function is to achieve quantitative, high-pressure, and stable transportation of various fluids (mainly liquids, some of which can transport high viscosity pastes) through mechanical motion of gear meshing. At the same time, it can also achieve fluid pressurization or quantitative distribution according to demand. The essence of its function is to utilize the volume change of the sealed chamber formed by the rotation of gears to convert mechanical energy into pressure energy and kinetic energy of the fluid, thereby achieving directional transportation of the fluid.