The steps remain limited
The upper deck removes the coarser material and the lower deck gets a more manageable flow.
Keep the steps between decks manageable
A lower deck should not suddenly process all the coarse material that the upper deck allows through. A logical structure helps keep the decks intact and production stable.
InputLargest materialUpper deckFirst reliefLower deckFiner separation
Two practical examples
These examples show how big the step between two decks can be. The correct structure also depends on machine, input and material.
The step to 6 mm is very large
A lot of coarse material and impact ends up on a fine sub-deck. This can reduce production and damage the deck more quickly.
What determines the correct structure?
Material and shape
Wet, sticky, long or sharp material behaves differently than dry and round material.
Feed and drop height
More mass and a higher drop give more impact at the first point of contact.
Machine and speed
Stroke, angle, speed and support bars determine how the material flows over the decks.
Compare the complete deck set
Note the meshes and positions of all decks. This way you can see how the structure relates to these general practical examples. Are you in doubt? Let us take a look.
Let us take a look