TONGUE PIECE MEMBER FOR PUMP, PUMP DEVICE, AND REPAIR METHOD OF TONGUE PART

To provide a tongue member for a pump which enables improvement of abrasion resistance in a tongue part with a simple method.SOLUTION: A tongue member 30 for a pump is attached to a pump device including a pump casing forming a volute chamber forming a liquid passage of a vortex pump and an impeller...

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Hauptverfasser: NAKAMOTO HIROAKI, GOTO AKIRA, NOMI MOTOHIKO, HAYAFUSA KEISUKE, KIKUTA KYOSUKE
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a tongue member for a pump which enables improvement of abrasion resistance in a tongue part with a simple method.SOLUTION: A tongue member 30 for a pump is attached to a pump device including a pump casing forming a volute chamber forming a liquid passage of a vortex pump and an impeller housed in the pump casing. The tongue member includes: a tongue part 32 for partitioning the volute chamber from the impeller; and engagement parts 40a, 40b which engage with engagement grooves formed on an inner wall of the pump casing. The tongue member 30 is detachably attached to the pump casing so as to be sandwiched by the pump casings 20, 22 formed by splitting the pump casing into two parts. Fitting parts which prevent falling of the tongue member 30 from the pump casing are provided at the engagement parts 40a, 40b of the tongue member 30.SELECTED DRAWING: Figure 4 【課題】簡便な方法により、舌部における耐摩耗性を高めるようにしたポンプ用舌部材を提供する。【解決手段】 ポンプ用舌部材30は、渦巻きポンプの液体流路を構成するボリュート室を形成するポンプケーシングと、ポンプケーシングに収容される羽根車とを備えたポンプ装置に取り付けられ、ボリュート室と羽根車とを仕切るための舌部32と、ポンプケーシングの内壁に形成された係合溝と係合する係合部40a,40bとを備えており、二つ割りのポンプケーシング20,22の両方に挟み込まれるように、舌部材30がポンプケーシングに着脱自在に取り付けられる。舌部材30の係合部40a,40bには、ポンプケーシングから舌部材30が脱落するのを防止する嵌合部が設けられている。【選択図】図4