Methods for improving the self-priming ability of gear pumps
The main methods to improve the self-priming ability of gear pumps include the following:
Increase the temperature of the liquid: By increasing the temperature of the liquid, the viscosity of the liquid can be reduced, thereby improving the self-priming performance of the gear pump. This is because liquids with lower viscosity are more easily sucked into the pump, reducing the flow resistance.
Optimize the design of the pump: Reasonable optimization of the design parameters of the gear pump, such as gear shape, cavity structure, etc., can effectively improve its self-priming performance. For example, the use of scraping or grinding technology can reduce the contact gap of the gear tooth surface, thereby improving the vacuum degree and self-priming ability.
Increase the diameter of the liquid inlet: By increasing the diameter of the liquid inlet, the resistance to liquid flow can be reduced, allowing more liquid to enter the pump cavity smoothly, thereby improving the self-priming performance.
Ensure the sealing performance: The sealing performance of the gear pump is crucial to the self-priming ability. Ensuring that the pump's sealing device is intact and preventing gas from entering the pump cavity is an important measure to improve the self-priming ability. If the sealing performance is poor, gas will enter the pump cavity, affecting the self-priming effect.
Choose the right pump type: Choose the right gear pump model according to the characteristics of the medium, such as adjustable residual oil gear pump, external lubrication gear pump, etc. These pump types have good adaptability to non-lubricated and impure media, thereby improving the self-priming ability.
Adjust the pump housing gap: When the self-priming ability of the gear oil pump deteriorates, you can try to tighten the bolts on the pump housing to reduce the gap, thereby improving the self-priming ability. However, it should be noted that this method should be carried out under the guidance of professionals to ensure the safety and stability of the pump.
Reduce cavitation and foam: Designing a suitable air intake device to reduce the gas content and foam in the liquid can also help improve the self-priming performance of the gear pump.
In summary, there are many ways to improve the self-priming ability of the gear pump, and appropriate measures should be selected according to the specific situation. At the same time, when using the gear pump, you should also pay attention to regular maintenance and maintenance to ensure that it is in good working condition.
