CPC F02M 35/0216 (2013.01) [B01D 46/521 (2013.01); B01D 50/20 (2022.01); F02M 35/0201 (2013.01); F02M 35/024 (2013.01); F02M 35/0223 (2013.01); F02M 35/08 (2013.01); F02M 35/086 (2013.01); B01D 46/0005 (2013.01); B01D 46/10 (2013.01); B01D 46/71 (2022.01); B01D 2279/60 (2013.01)] | 10 Claims |
1. An air filter for heavy dust conditions comprising:
a housing;
a precleaner;
a permeable filter;
a pulse jet back-flow flush system operative on said permeable filter; and
a scavenger system, said scavenger system disposes of particles collected at said precleaner through a collecting gap of said precleaner and an upper duct, and disposes of particles collected on the upstream surface of said permeable filter through perforations made to a bottom wall of said housing, a collecting channel running longitudinally under said perforations and a lower duct, wherein:
said scavenger system comprising an air suction source and a three way valve, and
said three way valve is airflow coupled to said upper duct, said lower duct and said air suction source, said three way valve enables scavenging of said precleaner and said permeable filter alternately.
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