The hydraulic oil filter element is a mesh made of multi-layer metal stamping, which is manufactured through special lamination and vacuum sintering processes. It is a new type of filter material with high mechanical strength and overall rigidity. The meshes of each layer of wire mesh are interlaced to form a uniform and ideal filtering structure, which not only overcomes the low strength, poor rigidity, and unstable mesh shape of ordinary metal wire mesh, but also can control the pore size of the material. Permeability and strength characteristics are reasonably matched and designed, so that it has excellent filtration accuracy, filtration resistance, mechanical strength, wear resistance, heat resistance and processability. The overall performance is significantly better than that of sintered metal powder, ceramics, Fiber, filter cloth, filter paper and other types of filter materials.
1.Replacement time of hydraulic filter element:
1.In addition to checking the color, viscosity, and odor of the oil, the oil pressure and air humidity should also be checked.If you are working in a higher altitude and lower temperature environment, you must also pay close attention to the carbon content, colloids (olefins)and sulfides in the engine oil,as well as the impurities, paraffin and moisture content in the diesel.
2.Hydraulic excavators generally need to replace the hydraulic oil after 2000 hours of operation, otherwise it will pollute the system and cause system failures. According to statistics, about 90% of hydraulic system failures are caused by system pollution
3.In special circumstances, if the machine uses low-grade diesel (the sulfur content in the diesel oil is 0.5%~1.0%), the diesel filter and the machine filter should be replaced every 150h; the diesel filter should be replaced every 60h if the sulfur content is above 1.0%. Machine filter. Use crushers, vibratory rammers and other equipment that has a heavy load on the hydraulic system. The replacement time of the hydraulic return filter element, pilot filter element and respirator filter element is every 100h.
2.Performance characteristics
The filter element is made of glass fiber/stainless steel mesh imported from the United States, which has the advantages of convenient sewage discharge, large circulation area, small pressure loss, simple structure, small volume, light weight, uniform filter material, etc.
The compatibility of the filter material is suitable for the filtrationofgeneralhydraulic oil.
The filter element is supported by the solid filter material on both sides and the stable filter material.
3.Best system locations for hydraulic filters
1.There are many variables to consider when choosing the location for a hydraulic filter: system cleanliness requirements, system pressure, where in the system are the components that are trying to be protected, pump flow, total return flow, just to name a few. The following are typical locations with schematic’s to consider when designing a hydraulic circuit:
Pressure filtration: Pressure filters usually produce the lowest system contamination levels to assure clean fluid for sensitive high-pressure components and provide protection of downstream components in the event of catastrophic failures. Systems with high intermittent return line flows may need only be sized to match the output of the pump, where the return line may require a much larger filter for the higher intermittent flows.
2.Return line filtration: Return line filters are often considered when initial cost is a major concern. A special concern in applying return line filters is sizing for flow. Large rod cylinders and other components can cause return line flows to be much greater than pump output. Return lines can have substantial pressure surges, which need to be taken into consideration when selecting filters and their locations.
4.Application areas:
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