As the name suggests, it uses a screw (auger) to compress the separated solid matter to give an extremely dry, stackable solid fraction.
These units are very compact in size and consist of a horizontal cylindrical screen that has a slow revolving auger running through its centre.
Slurry is pumped into the unit and immediately the liquid fraction starts passing through the screen into the collection chamber/chute to be pumped away to larger storage or flushing tank/s – particle sizes larger than the screens void size are left in the unit.
As the slurry progressively dewaters, the short auger starts transporting this continuously thickening slurry (plug) towards the outlet. The plug’s discharge is restricted by an adjustable spring-loaded or weighed flap system that controls the compaction/dewatering as the auger forces the plug through the outlet and drop onto the dung pile.
The dry product coming off these units can be adjusted to provide a 36% DM product that is a perfect replacement to sand and sawdust for dairy cow cubicle bedding – this is known as green bedding. Go to our green bedding section on this site for full details.
Throughput speed is determined by several factors:
- Slurry DM (whether raw or recycled from flushing)
- Desired particle size removal (screen void size)
- Unit size (spec’d for desired throughput)
- Dry fraction DM (adjusting discharge restriction flap)
This Product is manufactured by Bauer – FeedChamp is a UK dealer of all Bauer equipment.