Pump and medium circulation apparatus

Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump

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Details

415200, 4152171, 416176, 416241A, 62476, A63B 3100

Patent

active

061263869

ABSTRACT:
A pump has a rotor made of synthetic resin in a fixed housing which are adjacently arranged while forming a gap between the housing and the rotor to force-feed a medium containing water moisture, in which the rotor is made of a resol-type synthetic resin so that a dimensional change rate of the rotor is 0.15% or less for a medium having a moisture content rate of 10 wt % or less, whereby a sufficient pump performance can be obtained while relatively increasing the degree of freedom of the moisture content rate of the medium to reduce the corrosiveness of the medium.

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Roy Carter et al., "Regenerative Pumps", Pump Questions and Answers, Mc-Graw Hill Book Company, Inc., New York, pp. 187-195, Dec. 1949.
"Plastic in Pumps" by J.M. Grindley, Pumps-Pompes-Pumpen, vol. 130, 1977, XP 002050745.
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Patent Abstract of JP 03115794 "Rotor For Pump".
European Search Report.

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