FDBusiness.com

Flexible Screw Conveyor – The Perfect Choice For Maintaining Mix Integrity

 Breaking News
  • AB InBev to Sell Australian Business For US$11.3 Billion to Asahi Group Anheuser-Busch InBev has agreed to divest Carlton & United Breweries (CUB), its Australian subsidiary, to Asahi Group Holdings for Au$16.0 billion, (US$11.3 billion) in enterprise value. The transaction represents an implied multiple of 14.9x 2018 normalised EBITDA. As part of this transaction, AB InBev will grant Asahi Group Holdings rights to commercialise the portfolio of AB [...]...
  • UK Spirits Boom Shows No Signs of Slowing Spirits producers across the UK are gearing up to dramatically increase production over the next 12 months amid signs that the boom in UK spirits is set to continue, according to research conducted by a campaigning alliance that has just been launched. A poll by Survation for the newly-established UK Spirits Alliance has found that 65 [...]...
  • Mondelēz International Completes Acquisition of Majority Interest in Perfect Snacks Mondelēz International has completed its acquisition of a majority interest in Perfect Snacks®, a pioneer in the fast-growing refrigerated nutrition bars segment with a range of offerings including Perfect Bar, The Original Refrigerated Protein Bar™, and Perfect Snacks’ other lines of organic, non-GMO, nut-butter based protein bars and bites. “The Perfect Snacks majority acquisition further expands [...]...
  • Interim Revenue and Profits Up at Nichols Nichols, the UK-based soft drinks group, has reported a 10.2% increase in revenue to £71.6 million and a 2.0% rise in profit before tax to £13.3 million for the half year ended 30 June 2019, compared to the corresponding period in the previous year. EBITDA increased by 9.7% to £15.3 million. To support the trading [...]...
  • First Milk Announces Proposed Changes at Scottish Creameries First Milk, the UK dairy co-operative, has announced the commencement of employee consultation about proposed changes at its Scottish Creameries. The Scottish Creameries were put up for sale in April 2018 when First Milk announced that its Campbeltown and Arran Creameries were not core to its business strategy for the future. Despite significant effort over the [...]...

Flexible Screw Conveyor – The Perfect Choice For Maintaining Mix Integrity

Flexible Screw Conveyor – The Perfect Choice For Maintaining Mix Integrity
September 06
10:34 2017

By Cathy Podevyn, Marketing Director, Spiroflow

A flexible screw conveyor (FSC) is ideal to preserve the homogeneity of a mixture even where particle size or density vary widely between the components. This is essential when transferring from a mixer to further process or packaging machinery.

A FSC works by having a rotating helical screw inside a ultra-low friction polymer tube running at speeds normally in the 500-960 rpm range. The flight of a traditional rigid screw sweeps the whole area of its conveying tube, but with an FSC it only impacts a modest percentage of the whole tube cross section. An FSC conveyor works by using the internal friction within a powder or bulk solid to transfer the forward motion of the powder in contact with the spiral to the whole tube contents.  With an angled system a dynamic equilibrium is set up with the spiral action moving some particles upwards but gravity causing other particles to fall back down the centre of the tube; this is why the spiral needs to be run at a fast speed.

Whatever way this works for you, the completion between conveying and fall back means that an FSC constantly mixes the product whilst it is conveyed.  If you want to convey a formulation which tends to segregate then an FSC is an excellent choice, because the re-mixing ensures that your mixture exits the conveyor as well, if not better, mixed than at the conveyor inlet.  Many over-the-counter health products are mixtures of very fine active components mixed with a coarse grade of sugar. To ensure every sachet is the same, many packing lines use FSCs as the final conveying technology to ensure that every sachet contains the same formulation. Be aware however, that not just any FSC supplier could achieve this effect.  Careful design of the discharge chute and integration into the next stage of the process is essential to minimise any elutriation due to free fall or rolling/sifting segregation as the material forms a heap in the receiver.

It is also possible to take two pure components and, by the correct configuration of two FSCs, produce a continuous mixer to prepare and convey a blend with a total equipment length only a little longer than the two feed hoppers for the raw materials.

Finally, the dynamic flow balance also means that the output rate of an FSC does not exhibit the pulsing effect of a rigid screw making them ideal as metering systems, either volumetric or gravimetric, with accuracies down to +/- 0.05% being readily achieved.

Spiroflow has been a Global leader in the field of powder handling and dry bulk solids processing for more than 45 years. To learn more visit spiroflow.com, email sales@spiroflow.com or call +44 (0) 1200 422525 in the UK or (1) 704 246 0900 in the US.

About Author

mike

mike

Related Articles



Food & Drink Business Conference & Exhibition 2016

Upcoming Events

  • October 17, 2019Future Food-Tech
AEC v1.0.4

find food jobs

The Magazine

F&D Business Preferred Suppliers

New Subscriber

Subscribe Here



Advertisements