PUMP

PROBLEM TO BE SOLVED: To provide a pump having a simple structure that can restrain contact between a balance disk and a balance sheet.SOLUTION: A multistage pump 200 comprises: a rotating shaft 1; impellers 2 attached to the rotating shaft 1; a balance mechanism 70 for balancing axial thrust acting...

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Bibliographic Details
Main Authors MORI KUNIYASU, YOKOTA MITSUO, HOSODA NORIHIKO, OTAKE AKIKO
Format Patent
LanguageEnglish
Japanese
Published 13.10.2016
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
SEPARATION
TRANSPORTING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a pump having a simple structure that can restrain contact between a balance disk and a balance sheet.SOLUTION: A multistage pump 200 comprises: a rotating shaft 1; impellers 2 attached to the rotating shaft 1; a balance mechanism 70 for balancing axial thrust acting on the rotating shaft 1; a pump casing 3 that houses the impellers 2 and the balance mechanism 70; a balance pipe 75 that allows balance space 73 of the pump casing 3 in which the balance mechanism 70 is housed, to communicate with fluid suction side space of the pump casing 3; and a check valve 100 provided in the balance pipe 75 and through which fluid can flow only in a direction from the balance space 73 to the fluid suction side space.SELECTED DRAWING: Figure 2 【課題】バランスディスクとバランスシートとの接触を抑制することができる簡素な構造のポンプを実現する。【解決手段】多段ポンプ２００は、回転軸１と、前記回転軸１に取り付けられた羽根車２と、前記回転軸１に作用する軸方向推力をバランスさせるためのバランス機構７０と、前記羽根車２及び前記バランス機構７０を収容するポンプケーシング３と、前記ポンプケーシング３の前記バランス機構７０が収容されるバランス空間７３と前記ポンプケーシング３の流体吸い込み側の空間とを連通するバランス配管７５と、前記バランス配管７５に設けられ、前記バランス空間７３から前記流体吸い込み側の空間の方向へのみ流体が通流可能な逆止弁１００と、を備える。【選択図】図２
Bibliography:Application Number: JP20150061256