Knowledge points about vacuum oil filter oil pump

The selection of common oil pumps for vacuum oil filters is mainly based on the type of oil used for oil purification treatment.

Gear pumps: 

Gear pumps are often used in low-pressure systems and are not sensitive to oil contamination, so they are commonly used in ordinary lubricating oil filters and hydraulic oil filters. Because lubricating hydraulic oils generally contain relatively more impurities and are moderately expensive.

Centrifugal pumps are insensitive to impurities, have fewer wearing parts, and are more convenient to manage and repair. However, when operating at a flow rate lower than the rated flow rate or a small flow rate, the efficiency of the pump is low. It is suitable for conveying various liquids with low viscosity, and the viscosity has a greater impact on the performance of the pump. Therefore, the frequency of using centrifugal pumps for vacuum oil filters is not high. Generally, centrifugal pumps are selected for special oil filter oils due to temperature or environment.

Screw pumps: 

Due to their compact structure, few parts, easy assembly and disassembly, low-pressure pulsation, low noise, and long life, the reason for choosing screw pumps is that they have low flow loss during operation and stable operation. It is more commonly used when users choose a two-stage vacuum oil filter. It is commonly used in the filtration of insulating oil and refrigeration oil. It will not produce harmful gases due to this pump.

The above briefly describes several common oil pump types in vacuum oil filters. The oil pump configuration varies depending on the user's processed oil. So, as smart as you are, do you know the common knowledge about vacuum oil filters?