HANDLAIR Bag Filter type dust collectors are widely used to collect dust particles from the generating points, which in turn prevents the dust particles spreading in the hall. These types of dust collectors are used in a variety of industries, viz: pharmaceuticals, automobiles, transfer points, mixing plants, silos etc.

Principle:- The dust laden air is sucked from the generating point through suction hoods and ducts and made to pass through the bag house (filter section) where the air is filtered through the bags and the clean air is getting exhausted to the atmosphere through the blower. The dust particles accumulated on the surface of the filter bags are cleaned either by purging compressed air, or by a motorized shaking, or by a manual shaking mechanism. In the compressed air mechanism, the compressed air from an air tank is purged to individual filter bags through piping network intermittently with the solenoid valves and electronic timer. During normal dust collection process, dusty air flows through the filter and solid layer of dust forms on the filter surface. A quick bust of compressed air is shot through the filter media in the opposite direction of the dusty air stream, knocks the accumulated dust, which then falls in to bottom hopper. The accumulated dust particles in the bottom hoper is either collected in a dust bin or discharged to a conveyorised network through rotary air lock.

The different types of filters used are as under

(1) Pleated type, (2) Cartridge type, (3) Non Woven type.