Product category:
Environmental contamination, noise, dust and fume extraction, sensors
News Release from: Dustcheck | Subject: Dust extraction
Edited by the Manufacturingtalk Editorial
Team on 26 November 2004
Less complications wins dust control
contract
A dust control system maker won a contract from a cereals manufacturer on the basis that the equipment is less complicated and offered the quickest clean-down time.
Dustcheck report a very successful dust control system at Silvery Tweed Cereals (Silvery Tweed) which has been in operation for well over a year now and with whose performance the customer is delighted Following the signing of a strategic alliance to produce certain bread mixes for Rank Hovis McDougal, Silvery Tweed of Berwick-upon-Tweed sought contractors and suppliers to provide a new Automated Bakery Mix Blending System
This article was originally published on Manufacturingtalk on 8 Dec 2003 at 8.00am (UK)
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Dustcheck won the contract because, even though their price was in line with the others, more importantly their proposal was much more suited to the application, was far less complicated and offered the quickest clean-down time.
ManyMuch of the benefits offered derive from Dustcheck's specialisation in cartridge filter technology and their special typesbrand of reverse jet cleaning/filtering.
The Silvery Tweed dust collection system employs a wing type reverse jet cleaning system is self-purging.
The filter housing is cleaned once a week and it only takes 30 minutes.
Despite being in operation for over a year now, none of the cartridge elements have yet needed to be replaced.
Dustcheck have included extraction points at every FIBC Discharger, sack tip station, weighing station, x-ray machine, day bin, receiving bin and packing line in the system.
An in-line filter, with quick change cartridge, is fitted directly above the mixer so that product displaced during the filling cycle is returned to the mix by the reverse jet cleaning system.
Silvery Tweed has a dedicated quick-change mixer cartridge for each different mix to prevent cross-contamination.
From the start, Dustcheck's design engineers realised that installation of the system at Silvery Tweed would coincide with the ATEX Directive coming into force for all new installations.
They carried out a full risk assessment of the application and, as a result, the system includes anti-static filter cartridges, anti-spark fans with motors outside of the air stream and full explosion relief.
The dust collector has explosion relief panels but, in addition, there is a relief panel in the main extract ductwork collection pipeline and safeguards to prevent flame propagation back along the duct in the event of an over-pressure situation in the filter housing.
Within each cartridge is a rotating 'wing' comprising two vertical pipes each having a series of holes along its outer edge.
These pipes are mounted from a central shaft whose rotation ensures that they scan the entire surface of the cartridge filter.
In accordance with a predetermined sequence, each cartridge is isolated from service for cleaning by a damper valve.
As each wing is rotated, compressed air passing through the holes in the vertical pipes effectively 'rinses' off the dust from the outside face of the cartridge returning it to full efficiency and helping to prolong its working life.All of the ductwork is of galvanised steel and is 'clipped' together for easy cleaning.
However, the system is reported to be so efficient that this has so far not been necessary according to Silvery Tweed's Managing Director Tom Gladstone who comments, "I am very pleased with the way the system was installed.
It looks good and I am very satisfied with the way it works.
In fact, it works so well we almost forget it's there!".
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