Envelope Filters of Dustair Ltd

Product

Envelope Filters
  • Envelope Filters
“MODULAR SIZING
For the most common dust problems which usually involve a ducted system, Dustair Ltd have designed a range of size 50 - 1100 range of envelope filters. Larger systems use a number of units in a modular form, or other types of filter from our range.
Dustair Ltd offer a range of fan options to cater for the wide variety of a...

Product Description

“MODULAR SIZING
For the most common dust problems which usually involve a ducted system, Dustair Ltd have designed a range of size 50 - 1100 range of envelope filters. Larger systems use a number of units in a modular form, or other types of filter from our range.
Dustair Ltd offer a range of fan options to cater for the wide variety of air volumes encountered in ducted systems. For multiple banking fan applications, we can supply the units without fans.  Dustair Engineers are at hand to ensure that the correct fan for your particular requirement is selected.
 
SPECIALIST FILTER MEDIA
The filtration of the air is achieved by passing it through cloth arranged in a multi-pocket, envelope form. Standard units are provided with bags manufactured in cotton fabric though other materials are available for greater efficiency. These include plain needle felt fabrics, felts with surface treatments or membranes or, alternatively, felts manufactured incorporating epitropic fibres to give antistatic properties.
 
AUTOMATIC FABRIC CLEANING
An electro-mechanical shaking device is supplied with each filter unit, which raps the filter element thoroughly following a delay after the main fan is switched off. This is activated automatically by a control panel supplied free issue with each unit.
 
ENERGY EFFICIENT FANS
Dustair Ltd design fans (from 0.7Kw up to 18.5Kw) to give high energy efficiency for the volume being handled, while continuing to deliver sufficient external system pressure to cover most commonly encountered problems. The fan impellors are of a backward inclined, plate type and are mounted direct onto the motor shaft. These are mounted on top of the unit giving easy access for wiring and servicing, and in the event of fire ensures that the motor is outside the air-stream.
 
SIMPLE DUST DISPOSAL
The unit(s) are manufactured with a valley type hopper to channel the shaken dust into round collection bin(s). Each has a quick release system allowing easy removal after shaking down to allow the bins to be taken away for emptying at intervals.
Bin liners may also be fitted with pressure balance pipes as an option.
 
ROBUST CONSTRUCTION
The casings of all units are robustly constructed from heavy gauge sheet in welded panel form with stiffening where required. The units are built with quick release doors to allow easy access.
 
EASY MAINTENANCE
All of the components are designed for minimal tool use when carrying out maintenance. All of the bearings on the mechanisms are life sealed, limiting the amount of lubrication required. A major advantage of the Dustair envelope design is the clean method of bag replacement. As the filter is fixed at the base and shaken from above, all of the hazardous dust is collected inside the bag, meaning clean side access for maintenance and bag changing.
 
HARD WEARING FINISH
Dustair use Zintec mild steel to manufacture the units. The steel is then primed, top coated and finished in an 18 E 53 Ral Code Blue. Other colour finishes are available upon request.

Please contact us if you would like to discuss your needs in more detail and we will be happy to help solve your dust and fume extraction requirements!”

Product Price

Price not indicated

Technical Details

MULTIPLE OPTIONS:
·         Silencers are available as an add-on, if required, for areas where noise must be kept to a minimum
·         Flange mounting units are offered for silo mounting
·         For HAZARDOUS  applications we can provide: anti-spark fans, explosion relief features, reinforced construction, earthed filter elements and blast relief doors
·         Manometer(s) provide visual indication of the pressure drop across the filter(s)
·         Where a higher degree of filtration than normal filters provide is required, Secondary and Absolute filters may be fitted.
·         Alternative hopper discharges via flap or rotary valves.
·         Dustair can manufacture the units in alternative materials to suit specific requirements.
·         After-sales spares and/or maintenance contracts are available to ensure the equipment continues to work effectively in line with C.O.S.H.H. regulations.

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