Casing liner for sewage pump and sewage pump with the same
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United States of America Patent
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-
Dec 5, 2017
Grant Date -
Dec 3, 2015
app pub date -
May 28, 2015
filing date -
May 30, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A casing liner used for a sewage pump includes a surface to face an edge of a blade of an impeller when the casing liner is assembled with the impeller into the sewage pump. At least one groove with given width is formed in at least a part of the surface. The groove includes a first section with given depth, which is located on the side close to a rotational center of the impeller, a second section smaller in depth than the first section, which is located on the side far from the rotational center of the impeller, and a third section that is an inclined face connecting the first and second sections, the first to third sections being arranged in a width direction of the groove.
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