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US 2005/0089397 A1Published application
Method and apparatus for adjusting impeller clearance in a pump
AssigneeITT Manufacturing Enterprises, Inc.
InventorsJeremiah Quill, Chadwick Tuttle
Life of this patent
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Abstract
An impeller clearance adjustment system for providing for a desired clearance between an impeller and a housing by adjusting a spacing (10) between a thrust housing (11) and a frame (12) using a plurality of evenly-spaced shoulder screws (21) locked into a screwed-in position by respective lock nuts (22). A shoulder portion (21a) of each shoulder screw (21) keeps the thrust housing (11) from coming closer to the frame (12) than the adjusted spacing (10).
Claims8
An apparatus, comprising:
- a two-housing assembly including a first housing (11) having a plurality of first spaced apart non-threaded openings, and including a second housing (12) having a plurality of second spaced apart threaded openings registerable with the plurality of first spaced apart non-threaded openings;
- and
- means for holding the first housing (11) and the second housing (12) in a desired spaced-apart relation including a plurality of adjustment screws (21) each having a shoulder portion (21a) and each passing through one of the plurality of first spaced-apart openings and threadably passing into one of the second spaced apart threaded openings in the second housing so as to have the shoulder portion (21a) disposed between the first housing (11) and the second housing (12) and so preventing movement of the first housing (11) toward the second housing (12) closer than a desired spacing.
A method for holding a first housing (11) and a second housing (12) in a desired spaced-apart relation, comprising:
- a step (31) of threading to a desired depth in a second housing (12) a plurality of adjustment screws (21) through a respective one of a plurality of threaded openings in the second housing (12);
- and
- a step (32) of pushing the first housing (11) onto the plurality of adjustment screws (21) so as to have each adjustment screw (21) pass through a respective non-threaded opening in the first housing (11) until a shoulder portion (21a) of each adjustment screw (21) prevents further progress of the first housing (11) onto the adjustment screw (21).
Dependencies are inferred from the claim text.