When using high-performance hydraulic filters, the following precautions should be taken to ensure their effectiveness and extend their service life:
I. Selecting the Appropriate Filter
Based on hydraulic system requirements:
Choose a filter with appropriate filtration precision and flow rate according to the working pressure, flow rate, and cleanliness requirements of the hydraulic system.
Special attention should be paid to installing precision filters in front of hydraulic cylinder pressure lines or precision components (such as speed control elements, servo valves, and proportional valves) to ensure that the oil contamination level is controlled within the required range.
Considering filter material:
Select filter materials that are corrosion-resistant, high-pressure resistant, and wear-resistant, such as glass fiber filter cartridges.
II. Proper Installation and Connection
Installation location:
Install a suction filter at the pump suction port or suction pipeline to prevent large particles from being suctioned into the pump.
Install a return oil filter on the main return oil pipeline, utilizing the oil cooling system as an independent bypass filtration system to serve a dual purpose (both cooling and filtration).
Connection requirements:
Ensure that the filter inlet and outlet connections are correct to avoid reversing the oil flow direction.
Use connectors with good sealing performance to prevent oil leaks.
III. Regular Inspection and Maintenance
Monitoring pressure difference:
Regularly monitor the pressure difference between the filter inlet and outlet to judge whether the filter cartridge is clogged or damaged.
A too-small pressure difference may indicate that the filter cartridge has been punctured or improperly installed, while a too-large pressure difference may indicate severe contamination of the filter cartridge, requiring replacement or cleaning.
Replacing the filter cartridge:
Replace the filter cartridge according to the time interval specified in the manual or based on the pressure difference situation.
When replacing the filter cartridge, also clean the filter housing.
Cleaning and maintenance:
Regularly clean the oil tank and pipelines to prevent impurities from entering the hydraulic system.
Keep the dedicated purification device running normally and continuously to ensure oil cleanliness.
IV. Precautions
Preventing high oil temperature:
Ensure that hydraulic oil is not used at high temperatures to prevent oxidation and deterioration of the oil, which can affect the filtration effect of the filter.
Avoiding mixing old and new oil:
Do not mix old oil with new oil to prevent contamination of the new oil and affect the service life of the filter.
Protecting the filter:
During use, take care to protect the filter from mechanical damage and contamination.
Avoid exposing the filter to harsh environments for extended periods, such as high temperatures, humidity, and corrosion.
In summary, when using high-performance hydraulic filters, it is necessary to select the appropriate filter, install and connect it correctly, conduct regular inspections and maintenance, and pay attention to relevant precautions to ensure the effectiveness of the filter and extend its service life.