Extruder unit and dryer equipped therewith

A dryer for biomass, comprising:

• a drying surface with air passages defined therethrough;
• an aft supply configured to supply drying air through the drying surface;
• an extruder unit for depositing the biomass on the drying surface, the extruder unit further comprising:
• a surface section having a plurality of apertures defined through for the biomass to pass through the surface section;
• a base support connected to a driving element, wherein the base support is driven by the driving element about a rotational axis relative to the surface section;
• a support arm connected to the base support, and a scraper blade configured on the support arm and against the surface section such that during a rotation of the base support, the scraper blade follows a surface area shape of the surface section over which the scraper blade moves;
• and
• a crushing element configured on the base support and against the surface section so as to rotate with the base support and follow the surface area shape of the surface section over which the crushing element moves to crush biomass components held on the surface section;
• and
• wherein the driving element has a driving axis that penetrates the surface section, and wherein the surface section is pressed against the scraper blade by way of a thrust bearing positioned on a side of the surface section facing away from the scraper blade.