Title:
ROTARY PUMP
Document Type and Number:
WIPO Patent Application WO/2021/130858
Kind Code:
A1
Abstract:
A rotary pump equipped with a pump rotor which has a flat lateral rotor surface facing the axial direction, also equipped with a housing main body which has an axial-direction opening and a flat flange surface formed around the opening, and rotatably houses the pump rotor in the opening in a manner such that the lateral rotor surface and the flange surface are aligned in the same plane, and also equipped with a cover member which has a flat contact surface pressed against and secured to the flange surface by being bolted thereto and a flat sliding guide surface which slides on and guides the lateral rotor surface, wherein the cover member is formed from a crosslinked fluorine resin and a metal body, the metal body is provided with the contact surface and a recess which recesses in the axial direction relative to the contact surface in a region which corresponds to the sliding guide surface, and the crosslinked fluorine resin fills the recess interior in a manner such that the sliding guide surface is formed in the same plane as is the contact surface.
Inventors:
TAKADA SHOICHI (JP)
UOZUMI MASATO (JP)
NAKABAYASHI MAKOTO (JP)
KOBAYASHI EIICHI (JP)
IKEDA KAZUAKI (JP)
UOZUMI MASATO (JP)
NAKABAYASHI MAKOTO (JP)
KOBAYASHI EIICHI (JP)
IKEDA KAZUAKI (JP)
Application Number:
PCT/JP2019/050625
Publication Date:
July 01, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
SUMITOMO ELECTRIC SINTERED ALLOY LTD (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
F04C2/10
Foreign References:
| JPS5622486U | 1981-02-27 | |||
| JP2014227899A | 2014-12-08 | |||
| JP2015137567A | 2015-07-30 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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