JPS5884394U

JPS5884394U - Centrifugal pump axial thrust balance device

Info

Publication number: JPS5884394U
Application number: JP5722282U
Authority: JP
Inventors: 塚本　益也
Original assignee: 株式会社帝国電機製作所
Priority date: 1982-04-20
Filing date: 1982-04-20
Publication date: 1983-06-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図および第２図は従来の遠心ポンプの断面図、第３
図乃至第５図は本考案に至る前提となる遠心ポンプの一
部の断面図、第６図は本考案の一実施例を示す断面図、
第７図は水揚程、ポンプ効率、軸推力比較特性図、第８
図および第９図はそれぞれ異なる実施例を示す遠心ポン
プの断面図である。２１・・・・・・ポンプケーシング、２２・・・・・・
ポンプ羽根車、２３・・・・・・前面シュラウド、２５
・・・・・・後面シュラウド、２６・・・・・・ポンプ
後側室、２９・・・・・・前方の固定オリフィス、３２
・・・・・・後方の固定オリフイ、　ス、３３・・・・
・・均合い室、３５・・・・・・バランスホール、３８
・・・・・・邪魔板。１Figures 1 and 2 are cross-sectional views of conventional centrifugal pumps;
5 to 5 are cross-sectional views of a part of a centrifugal pump that is the basis for the present invention, and FIG. 6 is a cross-sectional view showing an embodiment of the present invention.
Figure 7 is a comparison characteristic diagram of water head, pump efficiency, and axial thrust;
9 and 9 are cross-sectional views of centrifugal pumps showing different embodiments, respectively. 21...Pump casing, 22...
Pump impeller, 23...Front shroud, 25
... Rear shroud, 26 ... Pump rear chamber, 29 ... Front fixed orifice, 32
...Fixed orifice at the rear, 33...
・・・Balance room, 35・・・Balance hall, 38
...Baffle board. 1

Claims

[Scope of utility model registration request]

a front fixed orifice is defined between a front shroud of the pump impeller and the pump casing; a rear fixed orifice is defined between a rear shroud of the impeller and the casing; A centrifugal pump having a balancing chamber formed in the rear side chamber of the pump, and a plurality of balance holes provided in the rear shroud that communicate the balancing chamber and the suction side of the impeller, wherein part or all of the balance holes are provided. An axial thrust balance device for a centrifugal pump, characterized in that a baffle plate is attached to the rotating shaft or the pump suction port of the casing close to the front of the balance hole so as to hide the balance hole.