Dalan hydraulic motor manufacturers tell you that the oil filter can be divided into paper oil filter, sintered oil filter, mesh oil filter, wire gap oil filter and so on.
Dalan hydraulic motor manufacturers tell you that the oil filter can be divided into paper oil filter, sintered oil filter, mesh oil filter, wire gap oil filter and so on.
1, paper oil filter
The filter element is a paper core made of plain or corrugated phenolic resin or wood pulp microporous filter paper, and the paper core is wrapped around a skeleton made of perforated tinplate to increase the strength.
In order to increase the filtration area, the paper core is generally formed into a folded shape. The filter has high precision and is generally used for fine filtration of oil, but it cannot be cleaned after clogging, and the filter element must be replaced frequently.
2, sintered oil filter
In the sintered oil filter, the filter element is sintered with metal powder, and the micropores between the particles are used to block the passage of impurities in the oil.
The filter element can withstand high pressure, good corrosion resistance and high filtration precision, and is suitable for high pressure and high temperature hydraulic systems requiring fine filtration.
3, mesh oil filter
The net type oil filter has a filter mesh made of copper mesh and is surrounded by a plastic or metal tubular skeleton with a lot of holes around it, and is coated with one or two layers of copper mesh. The filtering precision depends on the number of layers of copper mesh. And the size of the mesh.
The oil filter has the advantages of simple structure, large flow capacity, convenient cleaning, but low filtration precision, and is generally used for the oil suction port of the hydraulic pump.
4, line gap type oil filter
The line gap type oil filter is formed by a steel wire or an aluminum wire tightly wrapped around the outer side of the cylindrical frame to form a filter element, and the small gap between the copper wires is used to filter out impurities mixed in the liquid.
The utility model has the advantages of simple structure, large flow capacity, high filtration precision than the net type oil filter, but is not easy to clean, and is mostly a return oil filter.
How to install the oil filter:
1. The suction oil filter has a simple structure, and its function is to prevent large particle pollutants from being sucked into the pump during oil absorption. Generally, a low-precision filter element is used, and the maximum filtration precision is not more than 30-50um. For the convenience of maintenance, the oil filter should be used. Installed on the top or side of the tank, it should also be considered that its flow capacity should be more than twice the maximum flow of the hydraulic pump to prevent the pump from absorbing.
2. The oil filter oil filter is installed in the pressure pipeline downstream of the hydraulic pump to deliver clean pressure oil to the hydraulic system. Usually, a high-precision oil filter is used. The filtration precision is 3-20um, and the circulation capacity should be no less than the maximum pressure oil passage. flow.
3. The oil return oil filter is installed after the total oil return pipe, and filters the pollutants generated by the external invasion system and the system. Usually, a high-precision oil filter is also used. According to the recent pollution control system theory, the oil in the fuel tank should reach a certain level of cleanliness. At the same time, in order to prevent the filter element from being damaged due to blockage, the filter should be installed to block the filter.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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