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1. (WO2018179612) DRAINAGE PUMP

Pub. No.:    WO/2018/179612    International Application No.:    PCT/JP2017/045121
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Dec 16 00:59:59 CET 2017
IPC: F04D 1/14
F04D 29/08
Inventors: SHINODA, Jyuzou
新小田 十蔵
KATO, Yuya
加藤 友也
The purpose of the present invention is to provide a drainage pump capable of reducing the amount of water outflow into a chamber positioned above a pump chamber. In order to achieve this purpose, the drainage pump is equipped with: rotary vanes; a pump body having a first chamber housing the rotary vanes; a motor support member having a second chamber disposed above the first chamber; a motor; a partition wall disposed between the first chamber and second chamber; a through-hole provided in the partition wall; and a shaft disposed through the through-hole. The partition wall is provided with: a ring-like body part; and a flow guide surface disposed on the bottom surface of the inner portion of the ring-like body part. The flow guide surface defines a recessed space recessed so as to be above the bottom surface of the outer portion of the ring-like body part. The flow guide surface guides, in a horizontal direction or in an obliquely downward direction, the flow of water which has entered the recessed space.