Vertical multi-stage pump
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United States of America Patent
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Oct 8, 2024
Grant Date -
Oct 20, 2022
app pub date -
Sep 25, 2020
filing date -
Sep 26, 2019
priority date (Note) -
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Abstract
A vertical multi-stage pump includes a rotation shaft extending in a vertical direction, a plurality of impellers fixed to the rotation shaft, a multi-stage pump chamber accommodating the plurality of impellers and comprising a suction port for a first-stage impeller at a lower end, a lower casing comprising a suction nozzle extending in a horizontal direction and forming a communication space communicating the suction nozzle and the suction port, and an inner cylinder member interposed between the multi-stage pump chamber and a lower casing and expanding the communication space in a vertical direction.
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