Pump casing and related apparatus and methods

摘要

A pump casing has a metallic band that defines a sidewall of the pump casing and having at least one tab projecting from a surface thereof or at least one opening. The pump casing also has first and second plates disposed opposite one another, with the metallic band being disposed there between, and with the first and second plates and the metallic band jointly defining a chamber of the pump casing. At least one of the first or second plates includes at least one tab or at least one opening respectively cooperating with the at least one opening or the at least one tab of the metallic band so as to retain a formed shape of the metallic band in the pump. The at least one opening may, for example, be a slot in the at least one of the first or second plates.

主权项

1. A pump forming part of an immersion circulator configured for use in a circulating bath containing a working fluid, said pump comprising:
a plurality of pump casings including:
a first metallic band defining a sidewall of one of said pump casings and having at least one tab projecting from a surface of said metallic band or at least one opening, andfirst and second plates disposed opposite one another, with said metallic band being disposed there between, and with said first and second plates and said first metallic band jointly defining a first chamber of said pump which is configured to be filled with the working fluid when the pump is immersed in the working fluid, wherein at least one of said first or second plates includes at least one tab or at least one opening respectively cooperating with said at least one opening or said at least one tab of said metallic band so as to retain a formed shape of said metallic band defining said pump casing;a second metallic band partially defining a second chamber of said pump; anda third metallic band defining a third chamber of said pump with said third chamber being disposed between said first and second chambers and with a bent shape of said third metallic band being retained through engagement of at least one tab and at least one opening at an interface between said third metallic band and said first or second plate; a first impeller disposed within said first chamber; and a second impeller disposed within said second chamber.