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Vibratory Separator

Vibratory Separator

Key Features

  • For high performance pre-cleaning of grains or fine cleaning.
  • 5 models offered-pre-cleaning capacity 25 tonne/hour-100 tonne/hour.
  • Very low maintenance – due to vibratory motor drive.
  • Choice of 4 aspiration systems

The modern design of the vibratory sieve separator allows it to achieve high quality cleaning at large capacities, whilst having small overall dimensions and low power consumption. It is used to separate over and undersize impurities from granular materials. The separator is offered with the choice of four aspiration/pneumatic separator systems.

Application

Vibratory sieve separators are commonly used for:

  • pre-cleaning of grain.
  • high quality cleaning and grading of cereal grain and other seeds.
  • offal sorting lines.
  • cleaning lines of coffee, cocoa etc.

Advantages 

The features of the vibratory sieve separator are as follows:

  • smooth and silent operation.
  • drive by electric vibratory motors for negligible maintenance and highly effective screening.
  • good access to sieves and easy sieve change.
  • possibility to change the sieve inclination angle within the range of 0 – 12°.
  • choice of aspiration systems from basic aspiration case to high performance pneumatic channels, as follows:

Version “0” – separator with basic aspiration case – for removal of dust.
Version “A” – separator with narrow pneumatic channel – for precision separation when cleaning at reduced capacities for optimum accuracy.
Version “B” – separator with deep pneumatic channel – for precision separation on pre-cleaning throughputs.
Version “C” – separator with pneumatic channel with settling chamber – for pre-separation of heavier liftngs from air; leaving less impurities going to cyclone.

Operation

The product is fed to the machine by means of the inlet stub-pipe, and then moved to the front part of the sieve basket where the grain distribution device spreads the grain across the whole sieve width. On the first sieve deck, impurities larger than cereal grain are separated and moved out of the machine. The throughs from the first sieve deck move to the second sieve deck where impurities smaller than cereal grain are separated. These impurities are collected in the bottom of the sieve basket from where they are discharged. The overtails from the second sieve deck represents the good grain which leaves the sieve separator, either to the basic aspiration case (for dust removal) or to a pneumatic channel where a jet of pressurized air separates impurities lighter than grain. In the pneumatic channel, the air flow rate can be precisely adjusted by means of the moving back channel wall, which allows for very accurate separation by specific weight.

Construction

The vibratory sieve separator consists of:

  • sieve basket with two decks of sieves and product inlet and outlet.
  • supporting frame.
  • drive consisting of two electric vibrators mounted to sieve basket sides.
  • outlet stub-pipes for outputting impurities.
  • aspiration case or pneumatic channel, depending on the version of the machine.