Dust Suppression System Company

Pleated Bag Dust Collector

Product Description

Pleated bags are made of spun-bond polyester filter media. They are one-piece structures completed with end caps and inner cores. They can be installed in existing baghouse dust collectors, replacing traditional needle felt bags and bag cages. The baghouse with pleated bags provides a significant update to traditional pulse jet needle felt baghouse collectors. The baghouses with pleated bags dramatically increase filter area and efficiency than needle felt bags while operating at much lower differential pressure. Compared with traditional needle felt bags, the pleated bags increase filter area by 100~300%, which allows for a much smaller dust collector size.

Pleated bags dust Collector equipped with compressed air cleaning suitable to filter and separate up medium, fine and impalpable dust with high filtering efficiency and a continuous perfect filter cleaning system.

Operating Principle
Pleated bags dust Collector is a highly efficient, self-maintaining filter for dust with fully automatic cleaning by compressed air injection. The unit is manufactured with individual, reinforced, painted steel panels which make for extremely robust construction. The design includes an upper chamber that houses the compressed air cleaning system, the center section which includes the required filtering sleeves and a lower section with the supporting legs, hopper and polluted air inlet. It is working in depressure according to the following process.

The contaminated air enters from the hopper inlet by the strong speed decrease, larger particles drop into the wheeled waste bin. Also available is a version with a pre-chamber including a system to make the high concentrated dust fall down, the inlet will be not in the hopper in this case but directly in the pre-chamber. Alternatively, the hopper can be equipped with a rotary valve and worm conveyor. The cleaning guaranteed by the reverse jet system with compressed air controlled by the depressure cyclic programmer gives impulse to the solenoid valves cleaning a row of filtering sleeves each time, obtaining in this way a quite constant loss of charges level and constant airflow.

Dusty air is pushed, under the filtering sleeves, by the inlet situated in the hopper. Dust, contained in the sucked air, owing to the considerable speed decrease, will fall in the collecting bin. Then dust crossing filtering media from the outside to the inside will deposit impurities giving back the air perfectly cleaned. During operation, the filter is always in perfect efficiency with the cyclical counter-washing Cleaning System.

A Compressed air stored in the provided tank is suddenly pushed inside the sleeves, creating a violent counter-current shaking wave, which takes out and makes falling particles, deposited on the sleeves. This cyclical programmed by an Electronic Control will be injected by a range of nozzles inside their Venturi-Tubes connected to filtering sleeves. These tubes can collect the surrounding area air and enlarge it compared to the received Jet.


The filter is made in press-bended metal sheet panels. Filtering sleeves are made of high-quality fabric studied to solve filtering problems with high efficiency and long life resistance and performance. The sleeves are fitted on a metal cage galvanized or painted to increase their resistance and lifetime. The media cleaning System is composed of a cyclic programmer with pause and cleaning time governor, control light, compressed air collecting tank, die-cast electrovalves with electric consent pilot, injectors and Venturitubes in plastic material, or on-demand, totally made of metal. The filter is complete with supporting legs, electrical connections between valves and programmer, inspection door (on demand) and hook-up flanges.

  • Special treated spun-bond polyester filter media have much higher efficiency than traditional needle felt bags
  • Wide pleat space and narrow pleat depth helpful to improve the pulse jet cleaning
  • Short cartridge filters let filter elements far away from entry airflow, reducing the filter abrasion
  • The pleated bags can rebuild most of the baghouse filters, and replace the bags and cages directly
  • Compared to the baghouse with the same filter area, the pleated bag dust collector is 50% smaller. Saving expensive floor space
  • Pleated bags can be retrofitted on exiting felt bag collectors
  • Low pressure operation reduces the energy consumption
  • A one-piece filter design can make the installation and maintenance very easy


  • Woodworking, Cement, Plastic, Food, Pharmaceutical, Mineral, Chemical, Battery, Carbon black, Foundry

Standard Components

  • Bag filter chamber
  • Clean air chamber
  • Tube sheet
  • Polyester Needle felt bag & cage
  • Bag access doors
  • Hopper & inspection door
  • Legs & bracings
  • Dust drum
  • Handrails on top
  • Inlet & outlet flanges
  • Pulse-jet valve
  • Blow pipes with nozzles
  • Compressed air manifold
  • Pulse valve weatherproof hood
  • Timer board controller
  • Necessary fastening parts

Optional Components

  • Centrifugal fans
  • Access platform
  • Explosion relief vents
  • Other bag materials & style
  • Safety ladder with cage
  • Differential pressure control
  • Trough type hopper
  • Rotary valves
  • Screw conveyor
  • Water sprinkle