Filter Bag Cage

Filter Bag Cage(also known as bag cage or filter cage)is the essential supporting"skeleton"for filter bags in baghouse dust collectors.It maintains the structural integrity of filter bags under negative pressure and pulse-jet cleaning,directly determining filtration efficiency and bag service life.

Core Function

Structural Support:Prevents filter bag collapse or deformation caused by system vacuum(-500~-1500Pa)during operation.

Filtration Stability:Preserves full designed filtration area and uniform airflow distribution,eliminating dead zones.

Cleaning Efficiency:Facilitates smooth pulse-jet air distribution for effective dust stripping from bag surfaces.

Bag Protection:Smooth,burr-free surfaces prevent abrasion and premature wear of filter media.

Construction&Components

Typically precision-welded from high-quality steel wire,consisting of:

Vertical Ribs:Longitudinal support wires(8–24 ribs,Ø3.0–4.0mm)for primary strength.

Horizontal Rings:Circumferential support rings to resist positive/negative pressure.

Top Cap/Flange:For positioning and sealing on the tube sheet.

Bottom Ring:Protects bag base and maintains alignment.

Venturi Nozzle(Optional):Accelerates pulse air for enhanced cleaning.

Shapes&Specifications

Standard Shapes:Round(most common),Oval,Flat,Envelope,Star-shaped.

Custom Sizing:DiameterØ100–200mm;length 1–6m;multi-section design for long bags.

Connection Types:Clamp,chuck,plug-in,flange,and bayonet styles.

Key Features

Smooth Welds:Burr-free,polished surfaces to prevent bag damage.

High Rigidity:Resists bending,ensures consistent bag shape.

Lightweight:Easy installation,removal,and maintenance.

Durable:Long service life(1–5 years,depending on environment).

Customizable:Tailored dimensions,materials,and accessories for diverse systems.

Applications

Widely used in industrial dust collection systems for:

Cement,mining,and metallurgy

Power plants and waste incineration

Chemical,pharmaceutical,and food processing

Woodworking and textile manufacturing

Any pulse-jet baghouse filter requiring reliable bag support