Sieving Station With Integrated Dust Extraction System For Prominent Middle East Food Manufacturer

In News
Share on LinkedInTweet about this on TwitterShare on Google+Share on Facebook

Farleygreene have recently completed the supply of a bespoke sieving station to a blue chip food manufacturing plant in Egypt.

The end user required the system to handle a minimum of 3000kg/hour of flour via a 1000 micron screen. The system had to provide magnetic separation post screening and directly feed into a recently installed vacuum convey transfer system. As no central dust extraction point was within close proximity to the area of use, the station had to provide its own localised extraction system to protect the operator from possible airborne dust particles.

The recently updated Sievmaster Easilift 950 station covered all aspects of the application specifications with little change to the vast set of new options introduced by FG’s engineering team to the Easilift model range at the beginning of 2017. The modular nature of the equipment allowed the customer to pick, with advice from the FG technical team, all the elements they required to build their ultimate package. Personalised design changes were then made to finesse the unit to the customer’s exact need, in terms of finish, materials and dimensional factors, which is a standard part of the FG design service for all projects. The customer was presented with a full 3D models and detailed drawing pack at each stage to ensure they had full inclusion in the validation of the design before manufacture commenced.

The dusthood section of the station has featured a powerlift mechanism for operator access since its inception in 2006, the innovative system uses a self-docking seal to couple the hood to the vibratory sieve below removing the need for awkward sleeve connections and minimising downtime and operator interaction. The bag rest table now features a sloped section rather than a flat table, these more common designs can allow dust to settle which could cause hygiene issues, this makes sure powders are kept captive within the unit and are directed towards the sieve inlet as much as possible.

In order to provide dust extraction the hood was fitted with the optional local extraction system using a vacuum suction module, the electrically driven option was not chosen for this project as the surrounding process systems featured compressed air driven elements so provision of air supply was simple and preferable in the Atex environment it was to be installed. The module features a pneumatically driven vacuum pump and filter within the hood body which removes the airborne dust inside the hood when the operator is dispensing sacks into the sieve. The volume of extract air flow is further controlled by a simple adjustable sliding baffle plate to the front. The filter is then periodically cleaned by a reverse air jet pulse triggered by closing the hinged front cover assembly.

For the important screening operation the station utilised the powerful Sievmaster Slimline 950 vibratory sieve machine, the customer achieved his throughput requirements with some capacity to spare, which allowed them to future proof the process for years to come. The sieve can be stripped for cleaning without the need for any tools and all the main contact parts are removable for clean purposes which was an important factor in the customer choosing FG machinery over other types.

The mesh screen was manufactured from 430 magnetic steel which guaranteed peace of mind to the process, all other possible wear items were metal detectable and magnetic as this was the final critical control point before introducing the powders into the main production line.

The machine fine powder outlet had to be designed to connect to an existing pneumatic transfer system whilst maintaining the system hygiene and integrity. FG engineers designed a mobile secondary hopper which included and integrated magnetic separator, with easy clean rare earth magnetic tubes. Again, as with all FG equipment, the design delivered a no tool, simple cleaning activity. The 30 litre buffer hopper was manufactured and finished to ensure smooth uninterrupted flow into the convey line.

The whole unit was mounted on a specially design tubular frame with a fold out step and operator platform so the unit could be kept within a compact footprint when not in use. The hinged front cover also ensured that the machine was sealed when not in production between shifts and was ready for immediate use on shift start.
The project was completed in June 2017, with full validation documentation, traceability certificates conforming to EC1935/2004, user manuals, export packing and customs documentation appropriate to the delivery country.

If you would like to speak to us about your next project please contact us at info@farleygreene.com and one of our engineers would be happy to visit or provide some advice about your requirements. We are exhibiting across Europe you can find our 2017 schedule on the website also.

Recent Posts

Leave a Comment