JPS58114897U

JPS58114897U - Rotary pump shaft sealing device

Info

Publication number: JPS58114897U
Application number: JP1168282U
Authority: JP
Inventors: 塚本　益也
Original assignee: 株式会社帝国電機製作所
Priority date: 1982-01-30
Filing date: 1982-01-30
Publication date: 1983-08-05

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図は本考案の一実施例を示す回転ポンプの縦断面図
、第２図は他の実施例を示すキャンドモータポンプの断
面図、第３図は第２図に示す実施例の拡大部分断面図、
第一０図はさらに他の実施例を示す軸流ポンプの断面図
である。１・・・・・・ケーシング、４・・・・・・回転軸、５
・・・・・・ポンプ羽根車、５ｂ・・・・・・補助羽根
を構成する裏羽根、８・・・・・・メカニカルシール、
９・・・・・・固定部、１０・・・・・・回転部、１１
・・・・・・封液室、１４・・曲メカニカルシニル８の
回転部１０と回転軸４との間隙、２２・・・・・・出口
路、２３・・・・・・入口路、３０・・聞密封端面、３
１・・・・・・通路、５１・・・・・・補助羽根として
の補助羽根車。Fig. 1 is a longitudinal sectional view of a rotary pump showing one embodiment of the present invention, Fig. 2 is a sectional view of a canned motor pump showing another embodiment, and Fig. 3 is an enlarged portion of the embodiment shown in Fig. 2. cross section,
FIG. 10 is a sectional view of an axial flow pump showing still another embodiment. 1... Casing, 4... Rotating shaft, 5
...Pump impeller, 5b... Back blade constituting the auxiliary blade, 8... Mechanical seal,
9... Fixed part, 10... Rotating part, 11
...Sealing liquid chamber, 14...Gap between rotating part 10 of curved mechanical cylinder 8 and rotating shaft 4, 22...Outlet path, 23...Inlet path, 30 ... Sealed end surface, 3
1... Passage, 51... Auxiliary impeller as an auxiliary blade.

Claims

[Scope of utility model registration request]

Mechanical sheets for the casing of a rigid poship? A sealing liquid chamber is adjacent to the sealing liquid chamber, and an outlet passage and an inlet passage for flowing sealing liquid into the sealing liquid chamber are provided, and the fixed part of the mechanical seal is connected to the rotating part of the mechanical seal mounted on the rotating shaft of the pump. is arranged so as to be located on the impeller side of the pump, and one end of the rotary shaft is opened facing the sealed end surface of the fixed part of the mechanical seal and the rotary part, or the rotary part of the mechanical seal and the rotary part are connected to each other. A passage is provided that opens in a gap with the rotating shaft, and the other end opens on the suction port side of the pump, and a part of pumped liquid on the suction port side of the pump is transferred from the passage in the rotating shaft to the mechanical seal and the pump. A shaft sealing device for a rotary polyp, characterized in that an auxiliary vane is provided for sending flow to the discharge port of the pump through a gap with the rotary shaft.