AUTOMATIC REVERSE PULSE JET BAG FILTER UNIT

In reverse-pulse-jet bag filter unit, individual filter bags are supported by a metal cage spring, which are fastened onto a holding plate at the top of the bag filter unit which separates the unit into two parts as dust chamber and clean air chamber. Dirty gas enters from the bottom of the bag filter unit and flows upwards through the filter bags. The metal cage prevents collapse of the bag. Dust particles filtered and settled at the outer peripheral of the filter tube.
Bags are cleaned by a reverse jet of compressed air, injected through nozzle just above the bag holding plate nearer to filter bags. A venturi nozzle provided at the filter bag opening accelerates the compressed air. Since the duration of compressed air jet short time, the filter tube become balloon for short time. This expansion of filter bag for short time of remove the dust cake formation and the dislodged dust falls into a storage hopper below. Reverse-pulse-jet dust collectors can be operated continuously and cleaned without interruption of flow because the burst of compressed air is very small compared with the total volume of dusty air through the collector. Also, the continuous-cleaning feature allows them to operate at higher air-to-cloth ratios, so the space requirements are lower.