JPS55131599A - Pump - Google Patents

Pump

Info

Publication number
JPS55131599A
JPS55131599A JP3690979A JP3690979A JPS55131599A JP S55131599 A JPS55131599 A JP S55131599A JP 3690979 A JP3690979 A JP 3690979A JP 3690979 A JP3690979 A JP 3690979A JP S55131599 A JPS55131599 A JP S55131599A
Authority
JP
Japan
Prior art keywords
sleeve
rotary shaft
passage
impeller
lubricating
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
JP3690979A
Other languages
Japanese (ja)
Inventor
Kengo Hasegawa
Kinya Morioka
Kinpei Okano
Hayashi Nojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
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 JP3690979A priority Critical patent/JPS55131599A/en
Publication of JPS55131599A publication Critical patent/JPS55131599A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To shorten a pump in the axial direction thereof, by causing high-pressure water from a passage communication one of grooves formed in a sleeve and a pump chamber to support a rotary shaft, while lubricating with water the sleeve and a rotating portion at their boundaries and also by diposing the sleeve near an impeller.
CONSTITUTION: A passage 14 is provided to communicate one of grooves 13 formed in the inner circumferential surface of a sleeve 9 with a highly-pressured part in a pump chamber 4. As the pressure near the entrance 14a of this passage 14 is high, a part of water penetrates into the groove 13 through the passage 14a. Since a boss 8 is rotating together with the rotary shaft 1, a lubricating-film is formed between said boss 8 and sleeve 9. That is to say, as the rotary shaft 1 is supported while the water film is lubricating the sleeve 9 and the rotating member, the sleeve may be disposed near the impeller 2. Because the sleeve 9 supports the rotary shaft 1 in a surface-to-surface relation, the sleeve 9 may be able to bear sufficiently the stress exerted by the impeller 2 even if it is not considerably long. Consequently, it may be shortened in the axial direction and the rotary shaft 1 may be made thinner in diameter.
COPYRIGHT: (C)1980,JPO&Japio
JP3690979A 1979-03-30 1979-03-30 Pump Pending JPS55131599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3690979A JPS55131599A (en) 1979-03-30 1979-03-30 Pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3690979A JPS55131599A (en) 1979-03-30 1979-03-30 Pump

Publications (1)

Publication Number Publication Date
JPS55131599A true JPS55131599A (en) 1980-10-13

Family

ID=12482895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3690979A Pending JPS55131599A (en) 1979-03-30 1979-03-30 Pump

Country Status (1)

Country Link
JP (1) JPS55131599A (en)

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