The determination of filtration accuracy is a key step in the selection of hydraulic filters, which directly affects the effect of the filter and the performance of the system. The following are the main conditions for determining the filtration accuracy of hydraulic filters:
1.According to the system used.
Different hydraulic systems, such as high pressure pipelines, return pipelines, and suction pipelines, have different requirements for filtration accuracy. High pressure lines often require more precise filtration to protect the precision components in the system; The return oil line and suction oil line can choose relatively loose filtration accuracy according to the actual working conditions.
2.According to the use of filters to protect the original clearance and the sensitivity to the size of pollution particles to determine.
Various components in the hydraulic system, such as servo valves, proportional valves, etc., the sensitivity to pollutants is different, so it is necessary to determine the filtration accuracy according to the clearance of these components and the sensitivity to the size of pollution particles. For example, for components that require very high precision, it may be necessary to choose a filter with higher precision.
3.According to the pressure of the working system.
The pressure of the hydraulic system will also affect the selection of filtration accuracy. In high-pressure systems, the oil flows faster and may carry more contaminants, so more precise filtration is needed to ensure the oil is clean. In relatively low pressure systems, lower precision filters can be selected to balance cost and performance.