Rotary pump

Details Rotary pump Rotary pump

F - Mech Eng,Light,Heat,Weapons

04

D

F04D 29/46 (2006.01) F04D 29/16 (2006.01) F04D 29/42 (2006.01)

Patent

CA 2497015

A rotary pump 10, e.g. a centrifugal slurry pump, has a main casing 12 housing an impeller 18 rotatable in an impeller cavity 16 defined between end liners 25, 28 and a peripheral main casing portion 24. The end liner 28, at a suction end of the impeller, is slidingly sealed via an annular seal 32 against the main casing portion 24. A radially inner, axially outwardly extending tubular portion 36 integral with the end liner 28 is aligned with a stationary tubular inlet portion 40. Seats 38, 44 respectively on the tubular portions 36, 40 oppose each other over a bridge cavity accommodating an annular bridge 50 which is expansible to allow the end liner 28 to be adjusted axially to close any gap with the impeller 18 caused by wear. Two variations of the annular bridge 50 are disclosed.

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