Agitator for abrasive media

B - Operations – Transporting – 01 – F

Patent

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Details

B01F 3/12 (2006.01) B01F 7/00 (2006.01) B01F 7/18 (2006.01)

Patent

CA 2686331

Disclosed is a stirring member (1; 1a-1h), particularly for abrasive media, comprising a support disk (2; 2a-2h) to which stirring member blades (3; 3a-3h) are connected substantially perpendicular to the support disk (2; 2a-2h), said blades (3; 3a-3h) being arranged substantially in a radial direction. The support disk (2; 2a-2h) is also provided with a hub that receives a stirring shaft which is preferably motor-driven in a suitable manner. The trailing faces of the blades (3; 3a-3h) of the stirring member (1; 1a-1h) and/or the area of the blade connections to the support disk (2; 2a-2h) is/are designed to largely prevent vortex shedding. For this purpose, preferred geometrical measures for the stirring member blades (3; 3a-3h), the support disk (2; 2a-2h), and the connection of the blades (3; 3a-3h) to the support disk (2; 2a-2h) are disclosed and described.

La présente invention concerne un organe d'agitation (1; 1 a - 1 h) qui est notamment conçu pour des milieux abrasifs. Cet organe d'agitation (1; 1 a - 1 h) comprend un disque support (2; 2a - 2h) auquel sont reliées des lames d'organe d'agitation (3; 3a - 3h) orientées sensiblement dans la direction radiale et de façon sensiblement perpendiculaire au disque support. Le disque support (2; 2a - 2h) comprend également un moyeu qui reçoit un arbre d'agitation de préférence entraîné par un moteur de façon appropriée. Dans l'organe d'agitation (1; 1 a - 1 h), les faces des lames (3; 3a - 3h) qui sont opposées à l'écoulement et/ou la région des liaisons des lames au disque support (2; 2a - 2h) sont conçues de manière à ne pas impliquer de formation de tourbillon dans une large mesure. Cette invention concerne à cette fin des mesures géométriques préférées concernant les lames d'organe d'agitation (3; 3a - 3h), le disque support (2; 2a - 2h) et la liaison des lames d'organe d'agitation (3; 3a - 3h) au disque support (2; 2a - 2h).

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