Froth handling pump

F - Mech Eng,Light,Heat,Weapons – 04 – D

Patent

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Details

F04D 29/22 (2006.01) F04D 9/00 (2006.01)

Patent

CA 2732683

A froth handling pump includes a pump casing, an impeller mounted within the casing, and a de-aeration chamber mounted to the rear side of the pump casing. The impeller comprises multiple pumping vanes, each of the vanes having an inlet angle and an outlet angle, wherein the outlet angle is greater than the inlet angle, the outlet angles terminating at a rear shroud. The rear shroud includes multiple vent holes for the passage of gases therethrough. The de-aeration chamber, which comprises an inner volume, includes an inlet formed on the inner side for receiving gases passing through the plurality of vent holes. At least one vent outlet is provided for the discharge of gases from the de-aeration chamber.

L'invention porte sur une pompe prenant en charge l'écume comprenant un corps de pompe, une roue montée à l'intérieur du corps et une chambre de désaération montée sur le côté arrière du corps de pompe. La roue comprend de multiples ailettes de pompage, chacune des ailettes ayant un angle d'entrée et un angle de sortie, l'angle de sortie étant supérieur à l'angle d'entrée, les angles de sortie se terminant au niveau d'un flasque arrière. Le flasque arrière comprend de multiples évents pour le passage de gaz à travers ceux-ci. La chambre de désaération, qui comprend un volume interne, comprend une entrée formée du côté interne pour recevoir des gaz passant dans la pluralité d'évents. Au moins une sortie d'évent est pourvue pour l'évacuation des gaz de la chambre de désaération.

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