CN201547024U - Three-volute structure of balanced stable centrifugal pump - Google Patents
Three-volute structure of balanced stable centrifugal pump Download PDFInfo
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- CN201547024U CN201547024U CN2009202733463U CN200920273346U CN201547024U CN 201547024 U CN201547024 U CN 201547024U CN 2009202733463 U CN2009202733463 U CN 2009202733463U CN 200920273346 U CN200920273346 U CN 200920273346U CN 201547024 U CN201547024 U CN 201547024U
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- spiral case
- volute
- centrifugal pump
- volute structure
- radial force
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Abstract
A three-volute structure of a balanced stable centrifugal pump comprises a first volute, a second volute and a third volute, wherein the first volute, the second volute and the third volute are arranged respectively at 120 degrees; and outer flow channels of the first volute, the second volute and the third volute together converge the liquid flow at the common pump outlet. The utility model has the benefits that the radial force of the centrifugal pump is balanced, the operation is more stable, and the service life can be prolonged.
Description
Technical field
The utility model relates to a kind of centrifugal pump spiral casing, particularly balanced stability centrifugal pump three-volute structure.
Background technique
Centrifugal pump have performance range extensively, stability of flow, simple in structure, plurality of advantages such as running is reliable and easy to maintenance.Therefore centrifugal pump is most widely used in industrial production.Spiral case is the basic element of character of centrifugal pump, not only compiles the liquid that is thrown away by impeller, is again an energy conversion device simultaneously.Using more at present, worm frame has traditional single worm frame and more advanced double volute structure.
Single worm frame (with reference to Fig. 2) is in design discharge (when turning round under the flow best efficiency point under, act on impeller 1 ' pressure be evenly or be close to uniformly, under other flows, the pressure of impeller 1 ' on every side is uneven, thereby formed a synthetic radial reaction force, unbalanced radial force is along with flow reduces and increases from design discharge, centrifugal pump influence to big flow is bigger especially, the size of radial force is the amount of deflection of influence axle directly, thereby further influence sealing mechanism and bearing life, even can't move.
Double volute structure (with reference to Fig. 3) becomes the spiral cases of 180 degree to form by two, and the outer flow passage of first spiral case 2 " the outer flow passage and second spiral case 3 " converges to common exhaust port to two strands of liquid streams.Though each 180 degree pressure on segmental arcs are unbalanced, these two power opposite sign but equal magnitude, like this, though on axle and the bearing effect radial force is arranged also is very little, therefore this structure particularly has great importance in the centrifugal pump of flow greatly.But because this kind structure is to come balance by two anti-radial forces of opposite direction, its balance stationarity is unsatisfactory.
Summary of the invention
The utility model will solve the uneven and jiggly problem of operation of radial force that centrifugal pump exists, and provides a kind of and can make centrifugal pump radial force balance and the operation balanced stability centrifugal pump three-volute structure of brand new more stably.
The technical solution of the utility model:
Balanced stability centrifugal pump three-volute structure, it is characterized in that: comprise first spiral case, second spiral case, the 3rd spiral case, described first spiral case, second spiral case, the 3rd spiral case become 120 ° to differ layout, and the outer flow passage of described first spiral case, second spiral case, the 3rd spiral case converges to common pump discharge jointly to liquid stream.
Be thrown out of after liquid stream is through the impeller pressurization, three spiral cases have been full of liquid stream simultaneously.Liquid stream has a radial force for first spiral case, for second spiral case and the 3rd spiral case individual radial force is arranged also equally, because three spiral cases are into 120 degree and arrange, three radial forces are zero making a concerted effort on impeller, therefore three radial forces will reach a state of equilibrium, and this balance is the balance on same plane.After the radial force of impeller reaches state of equilibrium, the operation of this centrifugal pump will be more steady, also reduce simultaneously because the uneven caused various wearing and tearing of impeller radial force.
The beneficial effects of the utility model: make centrifugal pump radial force balance and operation more steady, can increase the service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of single spiral case;
Fig. 3 is the structural representation of double volute.
Embodiment
With reference to Fig. 1, balanced stability centrifugal pump three-volute structure, comprise first spiral case 2, second spiral case 3, the 3rd spiral case 4, described first spiral case 2, second spiral case 3, the 3rd spiral case differ layout for 4 one-tenth 120 °, and the outer flow passage of described first spiral case 2, second spiral case 3, the 3rd spiral case 4 converges to common pump discharge jointly to liquid stream.
Be thrown out of after liquid stream is through impeller 1 pressurization, three spiral cases have been full of liquid stream simultaneously.Liquid stream has a radial force for first spiral case 2, for second spiral case 3 and the 3rd spiral case 4 individual radial force is arranged also equally, because three spiral cases are into 120 degree and arrange, three radial forces are zero making a concerted effort on impeller 1, therefore three radial forces will reach a state of equilibrium, and this balance is the balance on same plane.After the radial force of impeller 1 reaches state of equilibrium, the operation of this centrifugal pump will be more steady, also reduce simultaneously because the uneven caused various wearing and tearing of impeller radial force.
The described content of this specification embodiment only is enumerating the way of realization of model utility design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (1)
1. balanced stability centrifugal pump three-volute structure, it is characterized in that: comprise first spiral case, second spiral case, the 3rd spiral case, described first spiral case, second spiral case, the 3rd spiral case become 120 ° to differ layout, and the outer flow passage of described first spiral case, second spiral case, the 3rd spiral case converges to common pump discharge jointly to liquid stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202733463U CN201547024U (en) | 2009-11-21 | 2009-11-21 | Three-volute structure of balanced stable centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202733463U CN201547024U (en) | 2009-11-21 | 2009-11-21 | Three-volute structure of balanced stable centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547024U true CN201547024U (en) | 2010-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202733463U Expired - Fee Related CN201547024U (en) | 2009-11-21 | 2009-11-21 | Three-volute structure of balanced stable centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982468A (en) * | 2014-04-28 | 2014-08-13 | 北京中水科水电科技开发有限公司 | Centrifugal pump volute |
-
2009
- 2009-11-21 CN CN2009202733463U patent/CN201547024U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982468A (en) * | 2014-04-28 | 2014-08-13 | 北京中水科水电科技开发有限公司 | Centrifugal pump volute |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20161121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |