发明名称 |
SCREW-CENTRIFUGAL PUMPING EQUIPMENT |
摘要 |
FIELD: motors and pumps. ^ SUBSTANCE: invention relates to pump engineering. Screw-centrifugal pumping equipment contains impeller 2 with hub 3, installed on shaft 1, and screw 8. Shaft 1 is implemented with cavity 20. In hub 3 there are implemented through openings 19. Inside the hub 3 it is installed additional shaft 6. On one end of shaft 6 from the side of input into impeller 2 there are installed screw 8 and hydroturbine 9. Inside the additional shaft 6 it is implemented hollow center 21, allowing output into hollow 15 between screw 8 and hydroturbine 9 through cross-holes 22. Between shaft 1 and additional shaft 6 it is installed at least one intermediate magnetic bearing 7. ^ EFFECT: invention is directed to improvement of anti-cavitation properties of pump and increasing of its coefficient of efficiency. ^ 3 cl, 2 dwg |
申请公布号 |
RU2365791(C2) |
申请公布日期 |
2009.08.27 |
申请号 |
RU20070141336 |
申请日期 |
2007.11.07 |
申请人 |
BOLOTIN NIKOLAJ BORISOVICH |
发明人 |
BOLOTIN NIKOLAJ BORISOVICH |
分类号 |
F04D9/04;F04D13/04;F04D29/66 |
主分类号 |
F04D9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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