SUBMERGED PUMP

To provide a submerged pump capable of restraining clogging of a vent hole caused by a foreign matter.SOLUTION: A submerged pump includes an electric motor, a pump casing 6 disposed below the electric motor and having a substantially cylindrical storage part 62 extending in a vertical direction in a...

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1. Verfasser: ARAKI SHINICHIRO
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a submerged pump capable of restraining clogging of a vent hole caused by a foreign matter.SOLUTION: A submerged pump includes an electric motor, a pump casing 6 disposed below the electric motor and having a substantially cylindrical storage part 62 extending in a vertical direction in an upper side thereof, and an impeller 5 stored in the storage part 62 of the pump casing 6 and connected to a rotating shaft 41 of the electric motor. A vent hole 622 penetrating in a horizontal direction is provided in the storage part 62 of the pump casing 6, a float 81 is arranged in the storage part 62 of the pump casing 6, and the float 81 is held so as to be movable between a floatation limit position facing the vent hole 622 and a descent limit position downwardly separated from the vent hole 622 in a state of being close to an inner wall surface 623 of the storage part 62.SELECTED DRAWING: Figure 3 【課題】異物による空気抜き孔の詰まりを抑制できる水中ポンプを提供する。【解決手段】電動機と、電動機の下方に配置され、縦方向に延びる略円筒状の収容部62を上部に有するポンプケーシング6と、ポンプケーシング6の収容部62内に収容されて電動機の回転軸41に接続されている羽根車5とが備えられた水中ポンプであって、ポンプケーシング6の収容部62に横方向に貫通する空気抜き孔622が設けられ、ポンプケーシング6の収容部62内にフロート81が配置され、フロート81は、収容部62の内壁面623に近接した状態で、空気抜き孔622に対向する浮上限界位置と、空気抜き孔622から下方に離れた下降限界位置との間で移動可能なように保持されている。【選択図】図3