The selection for oil pumps of Vacuum Oil Purifier is main according to which type of oil is applied to the Vacuum Oil Purifier, following is recommendation

Gear pump: Gear pump is commonly used in low-pressure systems and is not sensitive to oil pollution, so it is commonly used in ordinary lubricating oil purifier, turbine oil purifier, hydraulic oil purifier and single vacuum Insulation Oil Purifier. Because lubricating oils generally contain relatively more impurity quality, and the cost is moderate.

The centrifugal pump is insensitive to impurities, has few wearing parts, and is convenient for management and maintenance. However, when operating below the rated flow rate and small flow, the efficiency of the pump is low. It is suitable for conveying various liquids with low viscosity, and viscosity has a great influence on the performance of the pump. Therefore, the frequency of vacuum oil purifier choosing to use centrifugal pump is not large. Generally, when used for double stages High Vacuum Transformer Oil Purifier, the centrifugal pump will be selected due to temperature or environment.

Screw pump: Because of its compact structure, few parts, easy assembly and disassembly, and low-pressure pulsation, low noise, long life, the reason for choosing a screw pump is that its flow loss during operation is small, and the operation is stable. More common in the user to choose double stages vacuum Transformer Oil Purifier use, common in the filtration of insulating oil, dielectric oil, it will not produce harmful gases because of this pump.

The above briefly describes several common oil pump types in vacuum oil purifier, the user's oil to be treated is different, the oil pump configuration changes,