Problems with liquid injection in laboratory micro-injection pumps
Thread Content
The laboratory micro liquid feeding pump, which uses distilled water as the transfer medium, is operating properly with a stable flow rate of liquid. After switching to the use of n-heptane for transportation, it was found that the flow rate of liquid entering the system was abnormal; after some time, no liquid could enter anymore. What is the reason for this?
The densities of the two media are different, which may cause cavitation inside the pump during operation, preventing it from sucking in fluid properly.
The answer above is correct; when transporting hydrocarbon-based fluids, attention must be paid to the inlet pressure as vaporization can occur easily
This is not called cavitation. It is called “qi binding” or “qi lock””