US 12,085,336 B2
Drying device, rotary valve and drying method
Peter Gerardus Josephus Van Der Wel, Doetinchem (NL); Albert Kaptein, Doetinchem (NL); Markus Krumme, Doetinchem (NL); Thomas Karl Michael Mannschott, Doetinchem (NL); Isabella Patrizia Aigner, Doetinchem (NL); Manuel Philipp Zettl, Doetinchem (NL); and Manuel Kreimer, Doetinchem (NL)
Assigned to HOSOKAWA MICRON B.V., Doetinchem (NL)
Appl. No. 17/046,914
Filed by HOSOKAWA MICRON B.V., Doetinchem (NL)
PCT Filed Apr. 10, 2019, PCT No. PCT/NL2019/050213
§ 371(c)(1), (2) Date Oct. 12, 2020,
PCT Pub. No. WO2019/199166, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 2020740 (NL), filed on Apr. 10, 2018.
Prior Publication US 2021/0148634 A1, May 20, 2021
Int. Cl. F26B 3/20 (2006.01); F26B 5/04 (2006.01); F26B 25/04 (2006.01)
CPC F26B 3/20 (2013.01) [F26B 5/041 (2013.01); F26B 25/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drying device for drying a product, the drying device comprising:
a housing having a drying chamber defined therein, and having a product inlet at a first end and a product outlet at a second end;
a drying rotor being arranged rotatable within the drying chamber, wherein the drying rotor comprises a plurality of helical grooves arranged at the outer surface thereof and adjacent to each other in the direction of the circumference;
a screw having a flight with a flight channel there between, wherein the screw is arranged rotatable within the drying chamber and substantially parallel to the drying rotor;
a driver operatively connected to at least the screw, the driver being configured to drive the screw in rotation around a screw axis; and
a heater for providing thermal energy to at least a part of the drying chamber in order to dry the product present within the drying chamber,
wherein the drying rotor and/or the screw at least are configured for moving the product from the first end to the second end,
wherein the screw and the drying rotor are configured such that the flight of the screw engages into multiple helical grooves of the drying rotor,
wherein the screw and the drying rotor are configured such that, during use, the screw scrapes over the surface of the multiple helical grooves.