Baghouse filter cages provide support to your filter bags, and can affect the baghouse’s dust collection efficiency. If filter bags are not fitted to the wire filter cage properly, or if wire filter cages are not replaced when they become rough or rusty, the efficiency and service life of the filter bag media will be reduced. Regular preventive maintenance that includes inspection and replacement of damaged filter cages keeps baghouse dust collectors running efficiently and saves major baghouse repairs in the future.
baghouse Filter Cage Configurations
IAC supplies a wide range of baghouse dust collector filter cage configurations. Common wire cage constructions consist of 10, 12, or 20 vertical wire stringers. Standard horizontal ring spacings are 4”, 6” or 8”.
If plenum height restrictions are a problem, two-piece filter cages are available.
The number of vertical wire stringers used in filter cage construction depends on the applicable requirements and fabric media used for the filter bag. Baghouse filter cages with 10 wire stringers are usually used on heavier weight felts, while 12 wire stringers are usually used on lighter to medium weight felts. Filter cages with 20 wire stringers are usually used on fiberglass fabric filters and other media that require maximum support, thereby reducing the excessive flexing of the fabric yarns that usually causes premature bag failure.
The strongest filter cages for pulse-jet baghouses are known as a “rigid wire” cage. A rigid wire filter cage is designed to provide uniform support to the overall length of the fabric filter, utilizing stringer wires that are equally spaced around the circumference of the filter cage and welded to support rings that are spaced along the length of the filter cage.
Special filter cage tops, such as roll band and roll flange styles, are also welded to the stringer wires; thereby developing a strong internal assembly from which to attach the filter cage and filter bag to the baghouse tubesheet. The filter cage bottom is either interlocked to a stringer ring or welded to the stringers. Either method is equally sufficient for support.
IAC also supplies oval bag filter cages – please contact us for details.
Not sure which filter bag cage configuration your current baghouse dust collector application utilizes?
Download our Filter Cage Tech Spec Measurement PDF, fill it out as completely as possible, and submit it with your request for quote.
Specialty Filter Cage Wire and Coatings
Where moisture or chemical conditions create an environment that is corrosive to metal, 10, 12, and 20 wire filter cages can be produced from stainless steel or carbon steel with a variety of available coatings. Coatings such as epoxy are commonly used for corrosive environments. Special paints or electro-processed finishes such as electro galvanizing are also available to guard against corrosion.
Each filter cage, regardless of design, is produced consistently to specification. Diameter, overall length, and other close tolerances are held uniformly due to exclusive automated and state-of-the-art production equipment. Production runs are continually destruction-tested to monitor and maintain construction integrity.
Filter Cage Tops, Bottoms, and Venturi
Top load bag filter cages are available with a T-flange, ring top, or several styles of rolled flange tops. Cage diameters range from 4” to 6 1/8”. Common wire thickness ranges are 9 gauge, 10 gauge, and 11 gauge.
Bottom load bag filter cages are constructed with a split collar or split ring top. Common cage diameters range from 4” to 6 1/8”. Wire thickness ranges are 9 gauge, 10 gauge and 11 gauge.
For more efficient cleaning, venturis are available for all diameter filter cages. Venturis come in 3” to 6” lengths. Venturis are made in a variety of materials; aluminum, carbon steel, galvanized and stainless steel.
If you have special filter cage requirements call IAC. In most cases we can customize a cage to fulfill your needs.
FILTER CAGE TOPS
FILTER CAGE BOTTOMS
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Contact us today with your questions about filter cages for baghouses and dust collectors, or get a quote on your filter cage needs.