CN103742438A - Rotating shaft supporting device for multistage centrifugal pump - Google Patents
Rotating shaft supporting device for multistage centrifugal pump Download PDFInfo
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- CN103742438A CN103742438A CN201310699077.8A CN201310699077A CN103742438A CN 103742438 A CN103742438 A CN 103742438A CN 201310699077 A CN201310699077 A CN 201310699077A CN 103742438 A CN103742438 A CN 103742438A
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- pump
- shaft
- wall
- multistage centrifugal
- rotating shaft
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Abstract
A rotating shaft supporting device for a multistage centrifugal pump is formed by a pump shaft, a pump body, a pump cover, an impeller, a shaft sleeve and a bearing, wherein the outer wall of the shaft sleeve which is connected to the outer wall of the pump shaft in a sleeved mode is matched with the inner wall of an intermediate shaft bushing, the inner wall of a shaft bushing and the outer wall of the intermediate shaft bushing are in spherical fit, and an inner flushing port or an outer flushing port is communicated with gaps of the inner wall of the intermediate shaft bushing. Inner holes of the pump body and inner holes of the pump cover are of a downward-moving eccentric machined structure with the center line of the pump shaft as a benchmark. The rotating shaft supporting device for the multistage centrifugal pump has the advantages of being simple in structure, convenient to use, practical, low in failure rate, high in work efficiency and the like. In addition, the adverse influence on operation of the pump unit by coaxial deflection of a rotating shaft is eliminated, and stable operation of the pump unit is guaranteed.
Description
technical fieldthe present invention relates to a kind of rotating shaft auxiliary support apparatus of multistage centrifugal pump, especially a kind of for multistage centrifugal pump rotating-shaft support devices.
background techniqueadopt at present the horizontal multi-stage centrifugal pump of pump shaft two end supports, owing to being processed with a plurality of endoporus in the pump housing, pump cover, the axle sleeve at pump shaft amount of deflection maximum position place and axle bush adopt the contactless structure of large Spielpassung, when in pump, impeller progression is many, rotor bow can affect running clearance while increasing, the phenomenons such as even locking that occur while finally causing moving scratching, rubbing occur, have a strong impact on the normal use of pumping unit.
summary of the inventionthe object of this invention is to provide a kind of coaxality that improves rotating shaft in pump, guarantee stable multistage centrifugal pump rotating-shaft support devices.
For achieving the above object, multistage centrifugal pump rotating-shaft support devices of the present invention comprises pump shaft, the pump housing, pump cover, impeller, axle sleeve, bearing, the axle sleeve outer wall that is wherein socketed on pump shaft outer wall coordinates with middle axle bush inwall, axle bush inwall becomes sphere to coordinate with middle axle bush outer wall, interior flushing hole or outer flushing hole communicate with middle axle bush inwall gap.The endoporus of the pump housing, pump cover adopt take that pump spindle center line is benchmark move down eccentric processing structure.
Adopt after said structure, by interior flushing hole or outer flushing hole, inject highly pressurised liquid to middle axle bush inwall gap, supporting revolving shaft, improves coaxality.Axle bush inwall becomes sphere to coordinate with middle axle bush outer wall, form spherical locating face Self-aligning structure.Adopt eccentric processing structure can reduce running clearance, overcome because the situations such as scratching appears in amount of deflection increase, friction, locking occur, improve working stability.
That the present invention has is simple in structure, convenient and practical, failure rate is low, working efficiency high, overcomes the adverse effect of rotating shaft coaxiality deviation to pumping unit operation, guarantees pumping unit smooth running.
accompanying drawing explanationfig. 1 is the overall structure schematic diagram of multistage centrifugal pump rotating-shaft support devices of the present invention,
Fig. 2 is partial structurtes enlarged view as shown in Figure 1.
embodimentbelow in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, multistage centrifugal pump rotating-shaft support devices of the present invention comprises pump shaft 1, the pump housing 2, pump cover 3, impeller 4, axle sleeve 5, bearing 6, axle sleeve 5 outer walls that are wherein socketed on pump shaft 1 outer wall coordinate with middle axle bush 7 inwalls, axle bush 8 inwalls become sphere to coordinate with middle axle bush outer wall, form spherical locating face Self-aligning structure.Interior flushing hole 9 or outer flushing hole 10 communicate with middle axle bush inwall gap.The endoporus of the pump housing, pump cover adopt take that pump spindle center line is benchmark move down eccentric processing structure.In actual use, first impeller in pump and bearing are carried out to deflection metrology, the axle bush of pump shaft least significant end should be amount of deflection maximum value place (as Fig. 2 shows).For eliminating the amount of deflection deviation at this place, can to middle axle bush inwall gap, inject highly pressurised liquid by interior flushing hole or outer flushing hole, thereby form liquid rigidity, support, improve the coaxality of rotating shaft in pump.Axle bush inwall becomes sphere to coordinate with middle axle bush outer wall, form spherical locating face Self-aligning structure.Reduce running clearance, improve working stability.Simultaneously the endoporus of the pump housing, pump cover adopt take that pump spindle center line is benchmark move down eccentric processing structure, can reduce running clearance, overcome because amount of deflection increases occur scratching, the situation such as friction, locking occurs, improves working stability.
Because the present invention has adopted dynamic measurement, liquid rigidity support, sphere Self-aligning structure, eccentric processing structure.Fundamentally solve the impact of amount of deflection on running clearance, improved stability and safety operation and the working efficiency of pump.
Claims (1)
1. a multistage centrifugal pump rotating-shaft support devices, comprise pump shaft, the pump housing, pump cover, impeller, axle sleeve, bearing, it is characterized in that: the axle sleeve outer wall that is socketed on pump shaft outer wall coordinates with middle axle bush inwall, axle bush inwall becomes sphere to coordinate with middle axle bush outer wall, interior flushing hole or outer flushing hole communicate with middle axle bush inwall gap, the endoporus of the pump housing, pump cover adopt take that pump spindle center line is benchmark move down eccentric processing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699077.8A CN103742438B (en) | 2013-12-26 | 2013-12-26 | Centrifugal multistage pump multiple centrifugal pump rotating-shaft support devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699077.8A CN103742438B (en) | 2013-12-26 | 2013-12-26 | Centrifugal multistage pump multiple centrifugal pump rotating-shaft support devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103742438A true CN103742438A (en) | 2014-04-23 |
| CN103742438B CN103742438B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310699077.8A Active CN103742438B (en) | 2013-12-26 | 2013-12-26 | Centrifugal multistage pump multiple centrifugal pump rotating-shaft support devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN103742438B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105677946A (en) * | 2015-12-31 | 2016-06-15 | 上海电气凯士比核电泵阀有限公司 | Horizontal multistage pump pump case calibration design method |
| US9982683B2 (en) | 2014-12-29 | 2018-05-29 | Boulden Company, Inc. | Bushing seal for use in a pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982296Y (en) * | 2006-12-18 | 2007-11-28 | 上海凯士比泵有限公司 | Single-stage single-suction centrifugal pump |
| CN201428643Y (en) * | 2009-07-09 | 2010-03-24 | 西安泵阀总厂有限公司 | Sealed cycle structure of medium self-flushing machine |
| US20100232950A1 (en) * | 2009-03-10 | 2010-09-16 | Grundfos Management A/S | Multi-stage centrifugal pump assembly (shaft) |
| CN201661507U (en) * | 2010-02-03 | 2010-12-01 | 李正奇 | Mechanical seal combined part with cooling water washing for multistage centrifugal pump |
| CN102116308A (en) * | 2011-04-13 | 2011-07-06 | 襄樊五二五泵业有限公司 | Adjustable mechanical sealing structure for pump |
| CN202431580U (en) * | 2012-01-18 | 2012-09-12 | 合肥三益江海泵业有限公司 | Water pump rotating shaft supporting device for multistage centrifugal pump |
| CN102828957A (en) * | 2012-09-04 | 2012-12-19 | 大耐泵业有限公司 | Upright type liquid discharge centrifugal pump |
| CN203685655U (en) * | 2013-12-19 | 2014-07-02 | 大连深蓝泵业有限公司 | Rotating shaft support device of multistage centrifugal pump |
-
2013
- 2013-12-26 CN CN201310699077.8A patent/CN103742438B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200982296Y (en) * | 2006-12-18 | 2007-11-28 | 上海凯士比泵有限公司 | Single-stage single-suction centrifugal pump |
| US20100232950A1 (en) * | 2009-03-10 | 2010-09-16 | Grundfos Management A/S | Multi-stage centrifugal pump assembly (shaft) |
| CN201428643Y (en) * | 2009-07-09 | 2010-03-24 | 西安泵阀总厂有限公司 | Sealed cycle structure of medium self-flushing machine |
| CN201661507U (en) * | 2010-02-03 | 2010-12-01 | 李正奇 | Mechanical seal combined part with cooling water washing for multistage centrifugal pump |
| CN102116308A (en) * | 2011-04-13 | 2011-07-06 | 襄樊五二五泵业有限公司 | Adjustable mechanical sealing structure for pump |
| CN202431580U (en) * | 2012-01-18 | 2012-09-12 | 合肥三益江海泵业有限公司 | Water pump rotating shaft supporting device for multistage centrifugal pump |
| CN102828957A (en) * | 2012-09-04 | 2012-12-19 | 大耐泵业有限公司 | Upright type liquid discharge centrifugal pump |
| CN203685655U (en) * | 2013-12-19 | 2014-07-02 | 大连深蓝泵业有限公司 | Rotating shaft support device of multistage centrifugal pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9982683B2 (en) | 2014-12-29 | 2018-05-29 | Boulden Company, Inc. | Bushing seal for use in a pump |
| CN105677946A (en) * | 2015-12-31 | 2016-06-15 | 上海电气凯士比核电泵阀有限公司 | Horizontal multistage pump pump case calibration design method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103742438B (en) | 2016-06-22 |
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| CI01 | Publication of corrected invention patent application |
Correction item: Application Date Correct: 20131226 False: 20140326 Number: 17 Volume: 30 |
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| CI02 | Correction of invention patent application |
Correction item: Application Date Correct: 20131226 False: 20140326 Number: 17 Page: The title page Volume: 30 |
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Free format text: CORRECT: APPLICATION DATE; FROM: 2014;03;26 TO: 2013;12;26 |
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| GR01 | Patent grant |