Lubricant leakage issue in hydraulic diaphragm metering pumps
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Hydraulic diaphragm metering pump, with the worm gear installed vertically; all of the hydraulic oil from the plunger flows into the worm gear tank. The liquid level in the tank is full, and oil overflows from the bearing cover at the upper end of the worm gear. I have checked that the installation direction of all oil seals is correct, and the oil seals are new. Please experts analyze the cause and suggest a solution. Thank you
Isn’t there a cavity between the two of them?
There is a boneless oil seal in between, with the blade facing the turbine side
This oil seal should have two, with openings facing in opposite directions. Have you measured the fitting dimensions? A new oil seal does not necessarily mean it is suitable.
There is only one oil seal, with an interference fit of 1.6 mm. I replaced it with a skeleton oil seal of the same model, which has an interference fit of 1.8 mm; it is working properly at present. Could it be a problem with the boneless oil seal?
It’s hard for me to understand how an oil seal can seal a reciprocating pump. The logic doesn’t hold