Pump impeller and method
AssigneeWarman International Limited
InventorKevin Edward Burgess
Life of this patent
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Abstract
A pump impeller which is modified so as to achieve selected operating performance parameters. The impeller includes a front shroud and a read shroud, the shrouds being spaced apart so as to form a plurality of passageways therebetween which are separated by a plurality of impeller blade, each having an outer edge extending between the front and rear shrouds, the impeller having an outer diameter D. The method modification includes the steps of trimming the outer edge of the blades so that the outer diameter D1 of the fromt shroud is less than the outer diameter D2 of the rear shroud.
Claims8
A method of modifying a pump impeller so as to achieve selected operating performance parameters, the impeller including a front shroud and a rear shroud, the shrouds being spaced apart so as to form a plurality of passageways therebetween which are separated by a plurality of impeller blades, each having an outer edge extending between the front and rear shrouds, the impeller having an outer diameter D, the method including steps of trimming the outer edge of the impeller blades so that the outer diameter D1 of the front shroud is less than the outer diameter D2 of the rear shroud.
A method according to any preceding claim wherein the pump impeller is for a pump use for fluid gas desulphurisation.
An impeller for a pump, the impeller including a front shroud having an outer diameter D1 and a rear shroud having an outer diameter D2, the shrouds being spaced apart so as to form a plurality of passageways therebetween which are separated by a plurality of impeller blades each having an outer edge extending between the front and rear shrouds characterised in that the outer diameter D1 of the front shroud is less than the outer diameter D2 of the rear shroud.
Dependencies are inferred from the claim text.