FIELD: air purification. SUBSTANCE: dust catcher has casing with tangential inlet fitting, axial exhaust nozzle, and dust-discharge fitting; acoustic emitter made in the form of gasodynamic hooter with axially channeled rod resonator installed on outlet of inlet fitting; liquid feed source connected to axial channel of resonator through metering device and nipple located on zero bias locus of resonator; and inertial separator mounted on exhaust nozzle. EFFECT: improved design. 2 dwg
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