Self-priming chemical pump
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United States of America Patent
Stats
-
Apr 23, 1996
Grant Date -
N/A
app pub date -
Jan 30, 1995
filing date -
Feb 3, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A self-priming chemical pump which comprises: a pump portion including at least an impeller and a shaft supporting the impeller; a self-priming mechanism portion including a self-priming chamber which is provided in the discharge side of a vortex chamber of the impeller so as to communicate with a discharge opening, and a suction chamber which is provided in the suction side of the vortex chamber of the impeller so as to communicate with a suction opening; a seal wall which is provided in the vicinity of the discharge side of the vortex chamber to form a slight gap along the outer circumference of the impeller; and a circulation hole which is provided in the self-priming chamber so as to be located inside the outer circumference of the impeller.
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