Precision Filter Considerations:
1, the core of the precision filter is filter cartridge, filter core is composed of special materials, is appropriate to damage parts, need special protection;
2, when the precision filter work for a period of time, filter cartridge blocked a certain amount of impurities, when the pressure drop increases, the flow rate will drop, need to promptly remove the impurities in the filter, while cleaning the filter;
3, in the removal of impurities, special attention to precision filter, should not be deformed or damaged, otherwise, and then mounted the filter, filter after the purity of the media to meet the design requirements;
4, some precision filter, can not repeatedly use, such as Bag filter, polypropylene filter, etc.
5, if found the filter deformation or damage, need to be replaced immediately.
Precautions for coarse filter:
1, the core of the filter is the filter core parts, filter core by the filter box and stainless steel wire mesh, stainless steel wire mesh is appropriate to damage parts, need special protection;
2, when the filter work for a period of time, the filter core precipitates a certain amount of impurities, when the pressure drop increases, the flow rate will drop, need to promptly clear the filter core impurities;
3, cleaning impurities, special attention to the filter core stainless steel wire mesh can not be deformed or damaged, otherwise, then mounted the filter, filter after the purity of the media to meet the design requirements, compressors, pumps, instrumentation and other equipment will be destroyed;
4, if found stainless steel wire mesh deformation or damage, need to be replaced immediately.
Selection Principle of filter:
1, Import and export path:
In principle, the import and export of the filter should not be less than the matching of the pump inlet diameter, generally with the diameter of the imported pipeline.
2, nominal pressure:
The pressure rank of the filter is determined according to the highest pressure possible in the filtration line.
3, the choice of Kong Mu number:
The main consideration needs to intercept the particle size of impurities, according to the media process requirements. Various specifications of screen can intercept the size of the size of the table "Filter screen specifications."
4, Filter Material:
The material of the filter is generally chosen to be the same material as the connecting process piping, and the filter of cast iron, carbon steel, low alloy steel or stainless steel can be considered for different service conditions.
5. Calculation of resistance loss of filter
Water filter, in general calculation of rated flow rate, pressure loss for 0.52~1.2kpa