JPS54123707A - Double-sided suction pump - Google Patents

Double-sided suction pump

Info

Publication number
JPS54123707A
JPS54123707A JP2997578A JP2997578A JPS54123707A JP S54123707 A JPS54123707 A JP S54123707A JP 2997578 A JP2997578 A JP 2997578A JP 2997578 A JP2997578 A JP 2997578A JP S54123707 A JPS54123707 A JP S54123707A
Authority
JP
Japan
Prior art keywords
blades
impeller
flow paths
equal pitch
ones
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
JP2997578A
Other languages
Japanese (ja)
Inventor
Sumio Sudo
Tatsuo Fujinami
Hiroaki Yoda
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 JP2997578A priority Critical patent/JPS54123707A/en
Publication of JPS54123707A publication Critical patent/JPS54123707A/en
Pending legal-status Critical Current

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To make time interval differ in which each blade passes by an exhaust volute inlet so as to reduce vibration and noise due to resonance and the like, by arranging different number of blades with equal pitch in the left and right flow paths of impeller.
CONSTITUTION: Central wheel plate 6 of an impeller 1 is extended to the outer periphery thereof. Different number of blades, the right ones 1aW1d and the left ones 1a'W1d', are arranged with equal pitch respectively in the flow paths 1A, 1B of impeller divided into the left and right. Since the blades arranged in the respective flow paths 1a, 1b with equal pitch differ from each other in the number, apparent pitch becomes unequal(P1≠P2) at an exhaust volute inlet 5. Thus heavy pressure pulse of particular frequency(number of blades x rotational frequency) can be prevented so that vibration and noise of pump and exhaust piping system can be reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP2997578A 1978-03-17 1978-03-17 Double-sided suction pump Pending JPS54123707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997578A JPS54123707A (en) 1978-03-17 1978-03-17 Double-sided suction pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997578A JPS54123707A (en) 1978-03-17 1978-03-17 Double-sided suction pump

Publications (1)

Publication Number Publication Date
JPS54123707A true JPS54123707A (en) 1979-09-26

Family

ID=12290951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997578A Pending JPS54123707A (en) 1978-03-17 1978-03-17 Double-sided suction pump

Country Status (1)

Country Link
JP (1) JPS54123707A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0471793U (en) * 1990-10-31 1992-06-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0471793U (en) * 1990-10-31 1992-06-25

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