JPS5848796A - Centrifugal impeller - Google Patents

Centrifugal impeller

Info

Publication number
JPS5848796A
JPS5848796A JP14624681A JP14624681A JPS5848796A JP S5848796 A JPS5848796 A JP S5848796A JP 14624681 A JP14624681 A JP 14624681A JP 14624681 A JP14624681 A JP 14624681A JP S5848796 A JPS5848796 A JP S5848796A
Authority
JP
Japan
Prior art keywords
impeller
inlet port
pressure
cavitation
increased
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14624681A
Inventor
Toshiyoshi Iino
Hiromi Kaneko
Masahiro Mase
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14624681A priority Critical patent/JPS5848796A/en
Publication of JPS5848796A publication Critical patent/JPS5848796A/en
Application status is Pending legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/66Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Abstract

PURPOSE:To prevent generation of cavitation by a method wherein a communicating hole is provided in the shroud of the impeller and a part of flowing water increased in the pressure thereof by the impeller is introduced into the inlet of the impeller through said communicating hole to increase the static pressure of the inlet port of the impeller. CONSTITUTION:A communicating hole 13 is provided in a front shroud 1a and a gap 8 between a fixed wall 6 and the front shroud 1a is communicated directly with the inlet port of the impeller. Therefore, the static pressure of the inlet port of the impeller may be increased by introducing a part of the flowing water, increased in its pressure by the impeller, from the gap 8 into the inlet port of the impeller even when the suction pressure of the pump is reduced. According to this method, the cavitation will never be generated, and therefore, corrosion due to the cavitation may be prevented.
JP14624681A 1981-09-18 1981-09-18 Centrifugal impeller Pending JPS5848796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14624681A JPS5848796A (en) 1981-09-18 1981-09-18 Centrifugal impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14624681A JPS5848796A (en) 1981-09-18 1981-09-18 Centrifugal impeller

Publications (1)

Publication Number Publication Date
JPS5848796A true JPS5848796A (en) 1983-03-22

Family

ID=15403390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14624681A Pending JPS5848796A (en) 1981-09-18 1981-09-18 Centrifugal impeller

Country Status (1)

Country Link
JP (1) JPS5848796A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093000A (en) * 1998-08-11 2000-07-25 Cooper; Paul V Molten metal pump with monolithic rotor
CN105650025A (en) * 2016-01-08 2016-06-08 兰州理工大学 Centrifugal pump impeller
JP2017025843A (en) * 2015-07-24 2017-02-02 株式会社酉島製作所 Fluid machine
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US9855600B2 (en) 2007-06-21 2018-01-02 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9862026B2 (en) 2007-06-21 2018-01-09 Molten Metal Equipment Innovations, Llc Method of forming transfer well
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US9982945B2 (en) 2007-06-21 2018-05-29 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10072891B2 (en) 2007-06-21 2018-09-11 Molten Metal Equipment Innovations, Llc Transferring molten metal using non-gravity assist launder
US10126058B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Molten metal transferring vessel
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US10274256B2 (en) 2007-06-21 2019-04-30 Molten Metal Equipment Innovations, Llc Vessel transfer systems and devices
US10309725B2 (en) 2009-09-09 2019-06-04 Molten Metal Equipment Innovations, Llc Immersion heater for molten metal
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093000A (en) * 1998-08-11 2000-07-25 Cooper; Paul V Molten metal pump with monolithic rotor
US10072891B2 (en) 2007-06-21 2018-09-11 Molten Metal Equipment Innovations, Llc Transferring molten metal using non-gravity assist launder
US10195664B2 (en) 2007-06-21 2019-02-05 Molten Metal Equipment Innovations, Llc Multi-stage impeller for molten metal
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US10345045B2 (en) 2007-06-21 2019-07-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9855600B2 (en) 2007-06-21 2018-01-02 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9862026B2 (en) 2007-06-21 2018-01-09 Molten Metal Equipment Innovations, Llc Method of forming transfer well
US10458708B2 (en) 2007-06-21 2019-10-29 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US9925587B2 (en) 2007-06-21 2018-03-27 Molten Metal Equipment Innovations, Llc Method of transferring molten metal from a vessel
US9982945B2 (en) 2007-06-21 2018-05-29 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US10352620B2 (en) 2007-06-21 2019-07-16 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US10274256B2 (en) 2007-06-21 2019-04-30 Molten Metal Equipment Innovations, Llc Vessel transfer systems and devices
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US10309725B2 (en) 2009-09-09 2019-06-04 Molten Metal Equipment Innovations, Llc Immersion heater for molten metal
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10126058B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Molten metal transferring vessel
US10302361B2 (en) 2013-03-14 2019-05-28 Molten Metal Equipment Innovations, Llc Transfer vessel for molten metal pumping device
US10126059B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Controlled molten metal flow from transfer vessel
US10307821B2 (en) 2013-03-15 2019-06-04 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10322451B2 (en) 2013-03-15 2019-06-18 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
JP2017025843A (en) * 2015-07-24 2017-02-02 株式会社酉島製作所 Fluid machine
CN105650025A (en) * 2016-01-08 2016-06-08 兰州理工大学 Centrifugal pump impeller
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices

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