CN203335455U - Reflux preventing device of forced circulation efficient axial flow pump - Google Patents
Reflux preventing device of forced circulation efficient axial flow pump Download PDFInfo
- Publication number
- CN203335455U CN203335455U CN2013203634599U CN201320363459U CN203335455U CN 203335455 U CN203335455 U CN 203335455U CN 2013203634599 U CN2013203634599 U CN 2013203634599U CN 201320363459 U CN201320363459 U CN 201320363459U CN 203335455 U CN203335455 U CN 203335455U
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- China
- Prior art keywords
- reflux
- preventing device
- flow pump
- reflux preventing
- pump
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Abstract
The utility model relates to pumps, in particular to a reflux preventing device of a forced circulation efficient axial flow pump. The reflux preventing device comprises a reflux preventing device body, wherein a spiral groove is formed in the reflux preventing device body, corkscrew force generated by the spiral groove points to an impeller, one end of the reflux preventing device body is arranged in a streamline shape, and the concave face of the streamline end points to the direction of the impeller. The reflux preventing device improves operation efficiency, prolongs maintenance cycle, and greatly lowers production cost.
Description
Technical field
The utility model relates to pump, particularly relates to a kind of anti-reflux of pump circulation high-efficiency axial-flow pump.
Background technique
In the alumina evaporation technological process, the concentrated medium of vaporizer often carries out the pump circulation feed via the axial-flow pump with large flow, low lift, and the repair cycle of axial-flow pump will directly affect enterprise's production capacity.And in axial-flow pump, intrinsic secondary back has the most direct relation to the service behaviour of working life of gland seal device, pump and security and stability and frictional loss.According to a large amount of reports of the numerical simulation study to Internal Flow in Axial Pump, show: under equal operating mode, in pump, the secondary back of zones of different is the root of the problems referred to above.Therefore, how secondary back intrinsic in axial-flow pump disturbed or weaken to study and there is actual construction value.
Summary of the invention
The purpose of this utility model is exactly the anti-reflux that a kind of pump circulation high-efficiency axial-flow pump will be provided, and can improve operational efficiency, strengthens wear resistance and rotproofness, increases maintenance period.
The purpose of this utility model is achieved in that a kind of anti-reflux of pump circulation high-efficiency axial-flow pump, comprises anti-reflux body, it is characterized in that: on described anti-reflux body, be provided with spiral chute.
The spiral power that spiral chute described in the utility model produces is pointed to impeller.
A wherein end of anti-reflux body described in the utility model is set to streamlined and fairshaped concave surface and points to the impeller direction.
The utility model has improved operational efficiency, has strengthened wear-resisting property and corrosion resistant performance, has extended maintenance period.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, spiral chute; 2, anti-reflux body.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to accompanying drawing, a kind of anti-reflux of pump circulation high-efficiency axial-flow pump, comprise anti-reflux body 2, it is characterized in that: on described anti-reflux body 2, be provided with spiral chute 1, the spiral power that described spiral chute 1 produces is pointed to impeller, and a wherein end of described anti-reflux body 2 is set to streamlined and fairshaped concave surface and points to the impeller direction.During concrete enforcement, the utility model has designed an anti-reflux that points to impeller with spiral chute and spiral power in pump housing wheel hub, this reflux has changed the distribution of pump internal spiral stream fully, solved the problem refluxed in gap, simultaneously, the spiral power produced due to spiral chute effectively stops fluid outside mechanical seal, and the working life that makes mechanical seal was from original average less than three months, having brought up to more than ten months, is more than 3 times of original working life; Secondly, because being set to streamlined and fairshaped concave surface, the wherein end of anti-reflux points to the impeller direction, many recirculating zones helical source of original axial-flow pump is destroyed or reduce, in the situation that Operational Limits is constant, running current drops to 298～305A from original 330～340A, and operational efficiency has on average improved 10% left and right; The utility model is on the basis of introducing, digesting, and improves and improves, in optimal design, a kind of anti-reflux designed by pump circulation axial-flow pump present situation for alumina industry evaporation post, be industry energy conservation synergy, cost-saving, improve environment, extended the plant maintenance cycle.
Claims (3)
1. the anti-reflux of a pump circulation high-efficiency axial-flow pump, comprise anti-reflux body (2), it is characterized in that: be provided with spiral chute (1) on described anti-reflux body (2).
2. the anti-reflux of a kind of pump circulation high-efficiency axial-flow pump according to claim 1, is characterized in that: the spiral power sensing impeller that described spiral chute (1) produces.
3. the anti-reflux of a kind of pump circulation high-efficiency axial-flow pump according to claim 1 is characterized in that: a wherein end of described anti-reflux body (2) is set to streamlined and fairshaped concave surface and points to the impeller direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203634599U CN203335455U (en) | 2013-06-24 | 2013-06-24 | Reflux preventing device of forced circulation efficient axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203634599U CN203335455U (en) | 2013-06-24 | 2013-06-24 | Reflux preventing device of forced circulation efficient axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335455U true CN203335455U (en) | 2013-12-11 |
Family
ID=49704132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203634599U Expired - Fee Related CN203335455U (en) | 2013-06-24 | 2013-06-24 | Reflux preventing device of forced circulation efficient axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321936A (en) * | 2013-06-24 | 2013-09-25 | 江苏英特泵阀制造有限公司 | Backflow preventive device of forced-circulation efficient axial flow pump |
-
2013
- 2013-06-24 CN CN2013203634599U patent/CN203335455U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321936A (en) * | 2013-06-24 | 2013-09-25 | 江苏英特泵阀制造有限公司 | Backflow preventive device of forced-circulation efficient axial flow pump |
| CN103321936B (en) * | 2013-06-24 | 2016-07-27 | 江苏英特泵阀制造有限公司 | The anti-backflow device of forced circulation high-efficiency axial-flow pump |
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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: 20131211 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |