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Fig. 3.43: Intake filter with paper insert | Screw compressors draw in atmospheric air through the air inlet filter inside the compressor cabinet and through the suction filter with paper microfilter cartridge. The inlet filter separates solid impurities such as dust particles from the intake air, minimising wear in the compressor and providing the customer with clean compressed air.
In dusty conditions ( e.g., cement works ) paper insert filters are used. These have a higher separation rate than standard wet air or foam filtration.
The filter inserts can be cleaned on larger compressors. There is a possibility to monitor the intake filter for pressure differential, allowing soiled filters to be recognised at an early stage. |