JP2003184777A5

JP2003184777A5 -

Info

Publication number: JP2003184777A5
Application number: JP2001380642A
Authority: JP
Filing date: 2001-12-13
Publication date: 2005-06-09

Description

【０００５】
【課題を解決するための手段】
このような従来技術における問題点を解決するために、本発明の一態様は、第１のポンプ部から吐出された軸方向の一方に流れる取扱液を他方向の流れとして第２のポンプ部に導入する多段モータポンプにおいて、上記第２のポンプ部の羽根車を内部に収容したポンプケーシングを備え、上記ポンプケーシングは、上記一方の軸方向に流れる取扱液を流通させる第１の開口部と、上記他方向の流れを上記第２のポンプ部の羽根車に導入する第２の開口部と、上記第２のポンプ部の羽根車から吐出された取扱液を半径方向外側に導く複数の流路を形成する流路壁とを備えたことを特徴とする多段モータポンプである。 [0005]
[Means for Solving the Problems]
In order to solve such problems in the prior art, one aspect of the present invention relates to the second pump portion, in which the handling liquid flowing in one axial direction discharged from the first pump portion is flowed in the other direction. The multistage motor pump to be introduced, further comprising: a pump casing accommodating the impeller of the second pump portion therein; the pump casing having a first opening through which the fluid flowing in the one axial direction flows; A second opening for introducing the flow in the other direction to the impeller of the second pump portion, and a plurality of flow paths for guiding the handling liquid discharged from the impeller of the second pump portion radially outward And a flow path wall that forms the multistage motor pump.

このように、上記ポンプケーシングにおいて、第１のポンプ部から吐出された軸方向の一方に流れる取扱液を他方向の流れとして第２のポンプ部に導入し、第２のポンプ部から吐出された取扱液を複数の流路によって半径方向外側に導いているので、流路構成を複雑にすることなくポンプの外径を極力小さくすることができる。 As described above, in the pump casing, the handling liquid flowing in one axial direction discharged from the first pump unit is introduced to the second pump unit as a flow in the other direction and discharged from the second pump unit. Since the handling liquid is guided radially outward by the plurality of flow paths, the outer diameter of the pump can be minimized without complicating the flow path configuration.

本発明の好ましい一態様は、上記複数の流路は、半径方向外側で合流して吐出口に向かうように形成されていることを特徴としている。 One preferred embodiment of the present invention, the plurality of flow paths is characterized in that it is formed to face the discharge opening merges radially outwardly.

本発明の好ましい一態様は、上記第１の開口部は隣り合う流路の間に配置されたことを特徴としている。 One preferred embodiment of the present invention, the first opening is characterized in that it is disposed between the case cormorants channel next.

本発明の好ましい一態様は、上記流路の一部は、上記外ケーシングの内周面と上記内ケーシングに設けられた流路壁とによって形成されることを特徴としている。このようにすることで流路構成を更に簡略化することができる。 One preferred embodiment of the present invention, part of the upper SL channel is characterized by being formed by the inner peripheral surface and the channel walls provided in the casing of the outer casing. This can further simplify the flow channel configuration.

【００２８】
【発明の効果】
上述したように、本発明によれば、ポンプケーシングにおいて、第１のポンプ部から吐出された軸方向の一方に流れる取扱液を他方向の流れとして第２のポンプ部に導入し、第２のポンプ部から吐出された取扱液を複数の流路によって半径方向外側に導いているので、流路構成を複雑にすることなくポンプの外径を極力小さくすることができる。 [0028]
【Effect of the invention】
As described above, according to the present invention, in the pump casing, the handling liquid flowing in one axial direction discharged from the first pump portion is introduced into the second pump portion as the flow in the other direction, Since the handling liquid discharged from the pump portion is guided radially outward by the plurality of flow paths, the outer diameter of the pump can be minimized without complicating the flow path configuration.

Claims

In a multistage motor pump for introducing a handling liquid flowing in one axial direction discharged from a first pump unit into a second pump unit as a flow in the other direction,
A pump casing containing an impeller of the second pump portion therein;
The pump casing has a first opening through which the fluid flowing in the one axial direction flows, a second opening through which the flow in the other direction is introduced into the impeller of the second pump unit, and What is claimed is: 1. A multistage motor pump comprising: a flow passage wall forming a plurality of flow passages for guiding a handling liquid discharged from an impeller of a second pump portion radially outward.

Wherein the plurality of flow paths, multistage motor pump according to claim 1, characterized in that it is formed to face the discharge opening merges radially outwardly.

The first multi-stage motor pump according to claim 1 or 2 opening, characterized in that arranged between the case cormorants channel next.

The said pump casing was provided with the outer casing which has a discharge port in the outer peripheral part, and the inner casing inserted in the inside of the said outer casing, The multistage as described in any one of the Claims 1 thru | or 3 characterized by the above-mentioned. Motor pump.

Some prior SL channel, multi-stage motor pump according to claim 4, characterized in that it is formed by the inner peripheral surface and the flow path wall provided in the casing of the outer casing.