JPS5973594U

JPS5973594U - double suction centrifugal pump

Info

Publication number: JPS5973594U
Application number: JP16927382U
Authority: JP
Inventors: 松野　一良
Original assignee: 株式会社日立製作所
Priority date: 1982-11-10
Filing date: 1982-11-10
Publication date: 1984-05-18

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 the drawing]

第１図は従来の両吸込うず巻ポンプの構造断面図、第２
図は本考案の正規摺動すきま運転状態を示す要部断面図
、第３図は本考案の空転運転すきま状態を示す要部断面
図、第４図はスリーブベアリング使用時の構造断面図で
ある。１・・・・・・羽根車、２・・・・・・ケーシング、３
，３Ａ・・・・・・ライナリング、４．４Ａ・・・・・
・リング、５・・・・・・軸、６・・・・・・軸受、７
・・・・・・ハンドル、８・・・・・・玉軸受、９・・
・・・・ハンドルロック、１０・・・・・・軸継手、１
１・・・・・・軸封水口、１２・・・・・・シム、１３
・・・・・・スリーブベアリング。Figure 1 is a cross-sectional view of the structure of a conventional double-suction centrifugal pump;
The figure is a cross-sectional view of the main part showing the normal sliding clearance operation state of the present invention, Figure 3 is a cross-sectional view of the main part showing the idle running clearance state of the present invention, and Figure 4 is a structural cross-sectional view when the sleeve bearing is used. . 1... impeller, 2... casing, 3
, 3A... Lining, 4.4A...
・Ring, 5...Shaft, 6...Bearing, 7
...Handle, 8...Ball bearing, 9...
...Handle lock, 10...Shaft coupling, 1
1...Shaft seal water port, 12...Shim, 13
...Sleeve bearing.

Claims

[Scope of utility model registration request]

In a dual-suction centrifugal pump in which the impeller is rotatably supported on the casing, and the sliding surfaces of the casing ring, which is attached to the casing through a minute gap to the liner ring on the suction side of the impeller, face each other, the impeller The sliding surfaces of the liner ring and the casing ring arranged on both sides of the vehicle are formed into a conical shape extending in one direction with respect to the axis, and the shaft on which the impeller is attached is configured to be movable in the axial direction. A double suction centrifugal pump characterized in that a minute gap between the sliding surfaces of the liner 11 ring and the casing is made variable by movement of the shaft. −