The self-priming function of a gear pump is one of its important features, which means that when starting, the gear pump can suck in liquid on its own without the need for external auxiliary equipment. The self-priming ability of a gear pump usually refers to the ability of the pump to suck in liquid under its own action without the need for pre filling of the pump body during startup. This self-priming ability enables gear pumps to achieve self-priming at specific heights and adapt to some harsh working environments.
The self-priming function of a gear pump is achieved through its specific working principle. A gear pump is mainly composed of a pair of meshing gears, pump body, front and rear pump covers, and shaft. During operation, the rotation of gears alternately forms sealed suction and discharge chambers in the tooth shaped space, thereby achieving the suction and discharge of liquids. Due to the structure and working principle of the gear pump, it is able to suck in liquid on its own without any liquid. thirty-four
However, it should be noted that although gear pumps have self-priming ability, there are also some limitations and precautions during use. For example, gear pumps do not allow dry suction, which means they cannot suck mixtures with particulate matter, as this can easily lead to severe gear wear and even render the pump unusable. In addition, when selecting the medium for transportation, the oil temperature and viscosity should be kept appropriate, as too low viscosity may lead to increased leakage, while too high viscosity can reduce volumetric efficiency and cause abnormal suction. one
Overall, the self-priming ability of gear pumps is an important performance characteristic, but in practical applications, appropriate selection and use need to be made based on specific working conditions and medium characteristics.
