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Title:
DRAINAGE PUMP ROTATING BLADE AND DRAINAGE PUMP HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2019/111542
Kind Code:
A1
Abstract:
[Problem] To provide a drainage pump rotating blade capable of suppressing noise while effectively increasing water-pumping ability; and a drainage pump having this drainage pump rotating blade. [Solution] A rotating blade 30 of a drainage pump 1 has a shaft part 31, a plurality of large-diameter blades 33 which extend in the radial direction from the shaft part 31, and a plurality of small-diameter blades 34 which are connected to the bottom ends of the large-diameter blades 33. The bottom ends of the plurality of large-diameter blades 33 are connected to one another by a ring-shaped section 36, and the plurality of small-diameter blades 34 are inserted into the opening in the center of the ring-shaped section 36. The rotating blade 30 is configured in a manner such that the spaces between the adjacent large-diameter blades 33 open laterally. In addition, rising flow suppression parts 50 are provided on the front surfaces 33a of the large-diameter blades in order to suppress a rise of the water flowing along the front surfaces.

Inventors:
SATO Katsushi (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
KATO Yuya (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
SATO Hisashi (17-24 Todoroki 7-chome, Setagaya-k, Tokyo 82, 〒1580082, JP)
Application Number:
JP2018/038470
Publication Date:
June 13, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
FUJIKOKI CORPORATION (17-24, Todoroki 7-chome Setagaya-k, Tokyo 82, 〒1580082, JP)
International Classes:
F04D1/14; F04D29/66
Foreign References:
JP2002250299A2002-09-06
CN104154033A2014-11-19
JP2013064396A2013-04-11
JP2016113941A2016-06-23
Attorney, Agent or Firm:
OPUS IP LAW FIRM (FORECAST SHINJUKU AVENUE 6F, 5-12 Shinjuku 2-Chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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