EP 3581263 B1 20210310 - AGITATOR ARRANGEMENT
Title (en)
AGITATOR ARRANGEMENT
Title (de)
RÜHRERANORDNUNG
Title (fr)
AGENCEMENT D'AGITATEUR
Publication
Application
Priority
EP 18177891 A 20180615
Abstract (en)
[origin: EP3581263A1] The present disclosure relates to an agitator arrangement (2) for mixing a liquid within a mixing tank (1) and for cleaning the interior of the tank (1). The agitator arrangement (2) comprises a stationary outer pipe (22) extending in an axial direction (5) having an upper end region (14) configured for being fastened to the mixing tank (1) and a lower end region (23) configured to be located within the tank (1), a rotatable inner pipe (4) located partly within and extending coaxially with the stationary outer pipe (22) and forming a first flow channel (24) within the rotatable inner pipe (4) and a second flow channel (25) in a space between an interior surface (38) of the stationary outer pipe (22) and an exterior surface (55) of the rotatable inner pipe (4), a rotatable outer member (15) fastened to the rotatable inner pipe (4) and including a cleaning unit (28) having at least one opening (9) for spraying a pressurized cleaning liquid supplied through the second flow channel (25) on an interior surface (3) of the tank (1), and a seal (26) for sealing an axial gap (32) between an axial end surface (33) of the lower end region (23) of the stationary outer pipe (22) and an oppositely facing upper axial end surface (34) of the rotatable outer member (15). The seal (26) has a substantially cylindrically shaped portion (35) and a radially inwardly protruding rib (36) located in the axial gap (32). Furthermore, the seal (26) is configured to interact with the pressurized cleaning liquid, such that a lower sealing surface (37) of the seal (26), upon flow of the pressurized cleaning liquid in the second channel (25) to the cleaning unit (28), is arranged to sealingly abut the upper axial end surface (34) of the rotatable outer member (15) while allowing relative motion between the stationary outer pipe (22) and the rotatable outer member (15) in a radial direction (6).
IPC 8 full level
B01F 27/91 (2022.01); B08B 3/02 (2006.01); B08B 9/093 (2006.01)
CPC (source: EP)
B01F 27/191 (2022.01); B01F 27/2121 (2022.01); B01F 27/2122 (2022.01); B01F 27/91 (2022.01); B01F 35/1453 (2022.01); B08B 3/02 (2013.01); B08B 9/0936 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3581263 A1 20191218; EP 3581263 B1 20210310; WO 2019238357 A1 20191219
DOCDB simple family (application)
EP 18177891 A 20180615; EP 2019062781 W 20190517