Can a dry vacuum pump operate properly when the inlet pressure is higher than the outlet pressure?
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Can a dry vacuum pump operate properly when the inlet pressure is higher than the outlet pressure? There is now a requirement under certain operating conditions to evacuate the pressure tank; the gas exiting the vacuum pump enters a sealed system for further processing. This sealed system is maintained at a slight positive pressure, and there is no bypass in the design. It is uncertain whether the vacuum pump will be able to operate properly
If the inlet pressure is higher than the outlet pressure, it’s sufficient to simply discharge the fluid directly – why use a vacuum pump? Isn’t that a waste of energy?
By how much the inlet pressure is higher than the outlet pressure depends on the specific situation; if the difference is too large, it becomes difficult to use a vacuum pump, as the high pressure increases the load. If there is no bypass, one can reduce the inlet valve of the vacuum pump to ensure that the inlet pressure isn’t too high
If it’s too high, the system shuts down~~~~
Sure. As soon as the intake and exhaust pipelines were connected, didn’t the pressure tank lose pressure shortly after? And then start evacuating
The inlet pressure should be reduced before starting the pump; otherwise, the vacuum pump will work in vain and its exhaust valve assembly may get damaged