The ultimate pressure action of rotary vane vacuum pump
As for the ultimate pressure of rotary vane vacuum pump, I believe there are many friends who do not know very well. Today, I would like to introduce the ultimate pressure effect of rotary vane vacuum pump to you.
(1) first of all, check whether the pneumatic valve has been closed. Oil hole block, you can open the oil-way listening, the noise of the pump will be light, in the case of a fuel tank sealing good, if the hand feel sucked in the vent, the exhaust valve may be failure, leakage can be made of movement within the pump clearance, exhaust valve inside the plane, the exhaust valve sealing surface, such as shaft seal, pump cover plane, air inlet pipe, air valve seal caused wear, corrosion, bite can make the running clearance.
(2) in the pump inlet equipped with pneumatic solenoid valve, the general should be horizontal loading, and with the pump action at the same time, the relative humidity is higher or smoke gas contains water vapor condensation can be steam, gas Ban valve should be used to determine steering.
(3) collect the spare parts and technical documents, remove the exhaust protective parts, install, connect, test steering and connect water with water cooling pump as required.
(4) the pump temperature too high ambient temperature is too high, can be the cause of pump inlet temperature is too high, inlet cooling device failure, due to the high temperature can make the pump oil viscosity dropped sharply, and pump oil saturation vapor pressure increases, the right to use the limit pressure of pump and the extraction efficiency drops, make rubber easy ageing, thermal expansion makes the reliability of the operation.