Dust Collector Cage

A Dust Collector Cage(also referred to as a Filter Bag Cage or Baghouse Cage)is the critical supporting framework for filter bags in industrial baghouse dust collection systems.Acting as the"ribs"for the filter media,it ensures optimal filtration efficiency,prevents bag collapse,and significantly extends the service life of filter bags.

Core Functions

Structural Support:Maintains the filter bag's fully expanded shape under negative pressure,preventing sagging,collapse,or deformation during operation.

Wear Prevention:A smooth,polished surface minimizes friction and abrasion,protecting the filter bag from premature damage.

Efficient Filtration:Preserves the maximum effective filtration area,ensuring consistent airflow and dust-holding capacity.

Cleaning Assistance:Facilitates effective pulse-jet cleaning by allowing the bag to flex and shed accumulated dust,then immediately snap back to shape.

Construction&Design

Typically fabricated from high-quality carbon steel or stainless steel wires,the cage is precision-welded into a rigid,cylindrical structure.

Longitudinal Wires:Provide primary vertical support;standard configurations include 6,8,10,12,16,or 24 wires.

Horizontal Support Rings:Spaced at regular intervals(150–200mm)to add radial strength and prevent bulging.

Top&Bottom Rings:The top connects to the dust collector's tube sheet,while the bottom reinforces and protects the bag's lower end.

Venturi Nozzle(Optional):Often installed at the top to enhance pulse-jet cleaning efficiency by directing compressed air deeper into the filter bag.

Materials&Surface Treatments

Galvanized Carbon Steel:The most economical and widely used option for general,non-corrosive environments.

Stainless Steel(304,316,316L):Offers superior corrosion and high-temperature resistance for harsh industrial conditions.

Epoxy/Powder Coated:Provides excellent chemical resistance and is ideal for moderately corrosive or high-moisture applications.

Silicone Coated:Specially formulated for extreme high-temperature environments.