DUSTdown®| Self-cleaning bag filter

Reverse jet technology bag filters for industrial applications

What is DUSTdown® self-cleaning bag filter?

Dustdown® is a very high efficiency self-cleaning mechanical filter, equipped with an automatic on-line cleaning system with a Reverse Jet of compressed air. Dustdown® was designed by Tecnosida® to address the specific problems associated with treating emissions that contain a wide assortment of dust types; fine, very fine, potentially explosive (ATEX version), particulates, smoke and unburnt dust (BIOMASS version).

How does the DUSTdown® bag filter work?

The air to be treated enters the lower part of the dust remover, passes through a pre-filtering chamber that allows the courser dust to precipitate, protecting the filter from excessive dust loads.

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The flow then reaches the outside of the filtering surface, which it passes through to separate the suspended particles. 

The dust collected by the numerous sleeves then precipitates to the bottom of the filter where the hoppers direct it to the collection system (cochlea, rotary star valve, clapet valve or screw with conduit/pipe) or automatic discharge.The filtering surface is kept in perfect condition thanks to automatic cleaning cycles. These are managed on the basis of the filter pressure loss readings to limit the compressed air consumption (graph to the side) and increase the lifetime of the sleeves.

compressed air consumption

Filtering fabrics can also be made with different materials and with different features depending on the intended use. The following table shows the main variables:

Filtering fabrics variables

Strenghts of the DUSTdown® filter

  • CUSTOMISATION: The Dustdown® filter is built and configured according to the customer’s specific use and dimensional needs in terms of flow volume, quantity/quality of the dusts, (grain size) and temperature;
  • EFFICIENCY: The Dustdown® is designed to reach very high efficiency levels. More than 99.9% of the dust can be removed;
  • BY-PRODUCT RECOVERY: Dustdown® technology allows the recovered solid residues to be completely reused;
  • ECONOMY:  is considerably more economical in terms of purchase and maintenance costs, when compared with other dust removal technologies;
  • May be designed for low or high volumetric flow rates, being constituted by modular panels;
  • Is available in a version that is compliant with ATEX certification in accordance with the 94/9/EC directive.

DUSTdown® standard equipments

  • Filtration chamber;
  • Filtering bag with snap ring;
  • Hopper with inspection hag, gatherers and support legs;
  • Pneumatic cleaning system of the bags/cartridges, set by a differential pressure switch/economizer;
  • Pre-separation chamber;
  • Ladder and parapets for maintenance;
  • Triboelectric sensor (mandatory for some applications).

DUSTdown® available options

  • Pressure regulator;
  • Economiser;
  • Anti-fire systems;
  • Vibrators;
  • Insulation.

DUSTdown® filter: maintenance service

Tecnosida® also realizes and plans activities of ordinary and extraordinary maintenance

Bag with Venturi tube and basket

This service it’s available for DUSTdown® filter and allows to guarantee:

  • filter’s proper functioning
  • high filtration efficiency
  • reduction of economic and energetic wastes

Contact us for more information: we will plan with you this important activity! 

Contact Tecnosida to receive specific advice adhering to your technical situation!

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