Cleaning Baghouses Better with Vibrators

Many reverse air or shaker baghouses can develop dust build-up around the thimble or in the hopper corners and on the underside of the tube sheet. This causes reduced airflow, higher differential pressure (Delta P) and shorter bag life in the dust collection system.

Did you know that just a ½” of build up on an 8” ø thimble can result in a 25% reduction in airflow? This build up causes increased air velocity through the thimble, which can quickly abrade the lower section of the filter bag. It is also true that reduced thimble opening area will impede the discharge of dust during cleaning cycles in both shaker and reverse air baghouses. As you can see, the need to keep the thimble area clear of build up is an important and often overlooked step in proper baghouse maintenance.

NAVCO BH pneumatic piston vibrators are field proven to reliably and effectively reduce baghouse dust build-up, especially at the thimble and tube sheet. By using NAVCO vibrators to eliminate dust build-up filter life is increased and DeltaP is reduced.

Though sonic horns have been used to do the same job, a comparative study found that only one NAVCO vibrator was needed to maintain an area that would require numerous sonic horns. Equally notable, NAVCO vibrators require a fraction of the compressed air that sonic horns use, thereby offering utility cost savings over sonic horns.

NAVCO BH vibrators can be operated automatically with controls that are timed to coincide with the baghouse clean cycle. When they vibrate the tube sheet it causes any existing dust build-up to fall into the hopper thus preventing heavy build up over time. Along with reverse air or shaker cleaning, NAVCO vibrators make a significant difference when added to your baghouse maintenance schedule. Besides keeping production levels on target and lowering maintenance costs, additional efficiency by using vibrators will help keep a plant dust-free.

A NAVCO BH Vibrator can also be installed on the baghouse hopper to help remove collected PM.

Please read the Steel Mill Baghouse Case History to learn more. For a vibratory solution to excessive dust build up in your baghouse, call NAVCO today or fill out this Quote Request Form.