JPS60137193U

JPS60137193U - canned motor pump

Info

Publication number: JPS60137193U
Application number: JP19663084U
Authority: JP
Inventors: 筒井　俊明
Original assignee: Nikkiso Co Ltd
Current assignee: Nikkiso Co Ltd
Priority date: 1984-12-28
Filing date: 1984-12-28
Publication date: 1985-09-11
Also published as: JPS6218716Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のキャンドモータポンプにおける循環液の
圧力分布特性曲線図、第２図は本考案に係るキャンドモ
ータポンプの一実施例を示す要部断面側面図、第３図は
第２図に示すキャンドモータポンプにおける循環液の圧
力分布特性曲線図、第４図は第２図に示すキャンドモー
タポンプの取扱液の循環系内における圧力分布特性曲線
図、第５図は従来のキャンドモータポンプの要部断面側
面図、第６図は第５図に示すキャンドモータポンプの取
扱液の循環系内における圧力分布特性曲線図である。１０・・・ポンプ部、１２・・・キャンドモータ部、１
４・・・アダプタ、１６・・・インペラ、１８・・・ポ
ンプ室、２０・・・吸込管部、２２・・・吐出管部、２
４・・田−タ軸、２６・・・ステータ組立、２８・・・
ロータ組立、３０・・・前部ベアリング、３２・・・後
部ベアリング、３４・・・前部ロータ室、３６・・・後
部ロータ室、３８・・・循環管、４０・・・補助インペ
ラ、４２・・・通液孔、４４・・・通孔、４６・・・通
液路、４８・・・ベアリング支持部材、５０・・・通孔
、５２・・・通孔、５４・・・外部導管、５６・・・軸
貫通孔、５８・・・シールリング。Fig. 1 is a pressure distribution characteristic curve of circulating fluid in a conventional canned motor pump, Fig. 2 is a cross-sectional side view of essential parts showing an embodiment of the canned motor pump according to the present invention, and Fig. 3 is similar to Fig. 2. 4 is a pressure distribution characteristic curve diagram of the circulating fluid in the canned motor pump shown in FIG. 2. FIG. FIG. 6 is a cross-sectional side view of the main part, and is a pressure distribution characteristic curve diagram in the circulation system of the liquid handled by the canned motor pump shown in FIG. 5. 10... Pump section, 12... Canned motor section, 1
4... Adapter, 16... Impeller, 18... Pump chamber, 20... Suction pipe section, 22... Discharge pipe section, 2
4...Data shaft, 26...Stator assembly, 28...
Rotor assembly, 30... Front bearing, 32... Rear bearing, 34... Front rotor chamber, 36... Rear rotor chamber, 38... Circulation pipe, 40... Auxiliary impeller, 42 ...Liquid passage hole, 44...Through hole, 46...Liquid passage, 48...Bearing support member, 50...Through hole, 52...Through hole, 54...External conduit , 56... Shaft through hole, 58... Seal ring.

Claims

[Scope of utility model registration request]

(1) In a canned motor pump consisting of a pump part and a motor part, a portion of the pump handling liquid having a predetermined discharge pressure is pumped into the rear rotor chamber formed between the rear bearing of the motor part and the rotor.・An auxiliary impeller that further increases the pressure and guides it to the front rotor chamber through the ring is attached to the rotor 1), and a circulation pipe that communicates with the discharge pipe of the pump section is connected to the rear surface of the rear bearing. 7. Drill a liquid passage hole in the rotor shaft supported by the rear bearing, which opens to the connection part of the circulation pipe and the mounting base of the auxiliary impeller, and communicates these. The rotor chamber and the discharge side of the pump section are communicated in the front part 17. A part of the pump handling liquid guided from the rear rotor chamber to the front rotor chamber via the rotor-stator space is pumped appropriately through the front bearing. 1. A canned motor pump characterized in that a liquid circulation path is provided on the discharge side of the pump.

(2) Utility Model Registration Scope of Claims In the canned motor pump according to claim 1, the pump part and the motor part are connected through an adapter, and this adapter is provided with a liquid passage communicating with the discharge side of the pump part. A canned motor pump is provided.