US 12,285,712 B2
Dust collection device and method for filtering powder
Thomas Eggler, Rothrist (CH); Denis Steffen, Gränichen (CH); Devis Gangale, Rupperswil (CH); and Richard Chapman, Eastcote Towcester (GB)
Assigned to Tetra Laval Holdings & Finance S.A., Pully (CH)
Appl. No. 17/779,594
Filed by Tetra Laval Holdings & Finance S.A., Pully (CH)
PCT Filed Nov. 25, 2020, PCT No. PCT/EP2020/083357
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/105206, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 19211988 (EP), filed on Nov. 28, 2019.
Prior Publication US 2023/0011697 A1, Jan. 12, 2023
Int. Cl. B01D 47/02 (2006.01); B01D 47/10 (2006.01)
CPC B01D 47/024 (2013.01) [B01D 47/10 (2013.01); B01D 2247/04 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A food product processing system comprising:
a dust collection device for filtering powder from powder-filled air that is drawn from a food product processing system, the dust collection device comprising:
a venturi mixer that has an inlet for receiving the powder-filled air, a liquid inlet for receiving a liquid, a nozzle, and a housing that defines a mixing zone, wherein the nozzle is arranged to eject the liquid into the mixing zone and to create a vacuum when the liquid passes though the nozzle, such that the powder-filled air is drawn into the mixing zone where the powder-filled air and the liquid meet to form a liquid mixture of the liquid and the powder from the powder-filled air, and
a chamber arranged to receive the liquid mixture from the mixing zone, wherein the dust collection device further comprises:
a recirculation line arranged to draw the liquid mixture from the chamber and feed the liquid mixture to the liquid inlet of the venturi mixer, and
an air outlet arranged to discharge air from the chamber,
a powder handling unit connected to the dust collection device, for allowing powder-filled air to be conveyed from the powder handling unit to the dust collection device,
an ingredient feeding unit configured to receive and feed an ingredient; and
a mixing unit fluidly connected to the ingredient feeding unit and configured to mix the ingredient with a liquid, wherein
a fluid line is connected between the chamber of the dust collection device and the mixing unit, for allowing transportation of the liquid mixture from the chamber to the mixing unit.