US 2010/0061849 A1Published application

Froth handling pump

OwnerRobert J. Visintainer, Peter Hergt +2inventors

InventorsRobert J. Visintainer, Peter Hergt, Thillainatarajan Ravisundar, Christoph Jaeger

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Abstract

A froth handling pump is provided which 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 gasses therethrough. The de-aeration chamber, which comprises an inner volume, includes an inlet formed on the inner side for receiving gasses passing through the plurality of vent holes. At least one vent outlet is provided for the discharge of gasses from the de-aeration chamber.

Claims18

Dependent claims

A froth handling pump, comprising

(a) a pump casing having an inlet side and a rear side;
(b) an impeller mounted within the casing, the impeller comprising:
(i) a front shroud and a rear shroud;
(ii) a plurality of 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;
(iii) the rear shroud comprising:
(A) an outerface;
(B) a plurality of vent holes formed through the rear shroud for the passage of gasses therethrough;
(c) a de-aeration chamber mounted to the rear side of the pump casing and comprising:
(i) an inner volume;
(ii) an inner side mounted to the rear side of the pump casing;
(iii) an inlet formed on the inner side for receiving gasses passing through the plurality of vent holes;
and
(iv) at least one vent outlet for the discharge of gasses therethrough.

10 more elements

Dependencies are inferred from the claim text.