- 专利标题: Self-priming centrifugal pump
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申请号: US14233948申请日: 2012-08-09
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公开(公告)号: US09759217B2公开(公告)日: 2017-09-12
- 发明人: Hiroshi Yokota , Fumio Nishi , Isao Kawamoto , Kenji Takahashi
- 申请人: Hiroshi Yokota , Fumio Nishi , Isao Kawamoto , Kenji Takahashi
- 申请人地址: JP Hiroshima-shi
- 专利权人: KABUSHIKI KAISHA YOKOTA SEISAKUSHO
- 当前专利权人: KABUSHIKI KAISHA YOKOTA SEISAKUSHO
- 当前专利权人地址: JP Hiroshima-shi
- 代理机构: Kratz, Quintos & Hanson, LLP
- 优先权: JP2011-175852 20110811
- 国际申请: PCT/JP2012/070776 WO 20120809
- 国际公布: WO2013/022121 WO 20130214
- 主分类号: F03B11/04
- IPC分类号: F03B11/04 ; F04D9/02 ; F04D9/00 ; F04D1/04
![Self-priming centrifugal pump](/abs-image/US/2017/09/12/US09759217B2/abs.jpg.150x150.jpg)
摘要:
A pump with high performance and cleanability includes a casing having a smaller volute and a larger volute; a space between an outer circumference of an impeller and a starting end of the smaller volute being greater than that of the larger volute, generating a circulating flow of self-priming water from the smaller volute to the larger volute; and a diffusing part of the larger volute being formed into an upright, cylindrical self-priming water separating chamber guiding the self-priming water from the smaller volute to flow in for air-water separation. An inner circumference part of the casing is formed concentric with the outer circumference of the impeller with a predetermined space therebetween; defining members are protrusively disposed on the inner circumference part of the casing so as to define the shapes of the two volutes; and the self-priming water separating chamber is made attachable to and detachable from the casing.
公开/授权文献
- US20140169940A1 SELF-PRIMING CENTRIFUGAL PUMP 公开/授权日:2014-06-19