Abstract
A new high-performance, continuous-duty, automatic-cleaning dust filter is described. Capacity is increased 40% over previous equipment, permitting filtering ratios of 20 cfm per square foot or higher on many applications. Efficiency of 99.999921 wt% is achieved on an industrial dust dispersion finer than 5-micron mass median size. The pneumatic control system requires no adjustment and is proof against dust, vibration, or temperature to 425°F. The result is lower cost per cfm capacity, greater reliability, and lower maintenance. Filter resistance is proportional to airflow at constant dust load. Resistance also varies linearly and slowly with dust load at constant filter ratio, a 500% increase in dust load resulting in a 15% increase in resistance.