Title:
MULTI-STAGE SUBMERSIBLE PUMP FOR MINES
Document Type and Number:
WIPO Patent Application WO/2013/131351
Kind Code:
A1
Abstract:
Disclosed is a multi-stage submersible pump for mines, wherein an electric motor is coaxial with a water pump and the electric motor can work submerged. The water pump is a multi-stage centrifugal pump and the lift head is higher than 300 metres. The water pump balance drum balancing the axial force uses an end face sealing method able to automatically compensate, overcoming the drawbacks of failure by wear of the radial sealing method. Support from a bearing (18)is added to the bottom end of a rotary shaft (20), and using mine water containing relatively little silt to lubricate the bearing overcomes the drawbacks of failure by wear of a sliding bearing.
Inventors:
LU WEIGANG (CN)
LI WEI (CN)
HU BO (CN)
LI HUI (CN)
LI WEI (CN)
HU BO (CN)
LI HUI (CN)
Application Number:
PCT/CN2012/079137
Publication Date:
September 12, 2013
Filing Date:
July 25, 2012
Export Citation:
Assignee:
UNIV JIANGSU (CN)
LU WEIGANG (CN)
LI WEI (CN)
HU BO (CN)
LI HUI (CN)
LU WEIGANG (CN)
LI WEI (CN)
HU BO (CN)
LI HUI (CN)
International Classes:
F04D13/10; F04D29/10; F04D29/42
Foreign References:
| CN1815039A | 2006-08-09 | |||
| JPH09228987A | 1997-09-02 | |||
| CN202047989U | 2011-11-23 | |||
| CN102705247A | 2012-10-03 | |||
| JPH1182364A | 1999-03-26 | |||
| CN2563342Y | 2003-07-30 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
南京经纬专利商标代理有限公司 (CN)
南京经纬专利商标代理有限公司 (CN)
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