HOSE FILTER Russian patent published in 1994 - IPC

FIELD: purification of air. SUBSTANCE: filter is provided with system of detection of damage of fabric hoses including successively connected powder separator in the form of inertial bend, air intake with top perforated wall, powder concentrator in the form of cyclone, ejector, pipe-line with inertial member, transducer and speed damper in the form of fabric hood. Mixing chamber of ejector and pipe-line are made from electroinsulating material. Transducer is in the form of chamber located between light source and photocell. The chamber accommodates transparent. plates mounted in spaced relation to each other and is provided with grounded metal net. EFFECT: reduction of environment pollution, reduced consumption of powder material, enhanced safety of operation. 8 cl, 3 dwg