CN103321936B - The anti-backflow device of forced circulation high-efficiency axial-flow pump - Google Patents
The anti-backflow device of forced circulation high-efficiency axial-flow pump Download PDFInfo
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- CN103321936B CN103321936B CN201310252361.0A CN201310252361A CN103321936B CN 103321936 B CN103321936 B CN 103321936B CN 201310252361 A CN201310252361 A CN 201310252361A CN 103321936 B CN103321936 B CN 103321936B
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- backflow device
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- flow pump
- helicla flute
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Abstract
The present invention relates to pump, especially relate to the anti-backflow device of a kind of forced circulation high-efficiency axial-flow pump.It includes anti-backflow device body, and described anti-backflow device body is provided with helicla flute, and the spiral force that helicla flute produces points to impeller, and wherein one end of described anti-backflow device body is set to streamlined and fairshaped concave surface and points to impeller direction.The present invention improves operational efficiency, extends maintenance period, greatly reduces production cost.
Description
Technical field
The present invention relates to pump, especially relate to the anti-backflow device of a kind of forced circulation high-efficiency axial-flow pump.
Background technology
In alumina evaporation technological process, the medium that vaporizer concentrates often via having big flow, the axial-flow pump of low lift carries out forced circulation feed, the time between overhauls(TBO) of axial-flow pump will directly affect enterprise's production capacity.And the service life of gland seal device, the service behaviour of pump and security and stability and friction loss are had the most direct relation by secondary back intrinsic in axial-flow pump.Report according to a large amount of numerical simulation studies to Internal Flow in Axial Pump and 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 is disturbed or weaken study have reality construction value.
Summary of the invention
Present invention aim to provide the anti-backflow device of a kind of forced circulation high-efficiency axial-flow pump, operational efficiency can be improved, strengthen wearability and rotproofness, increase maintenance period.
The object of the present invention is achieved like this: the anti-backflow device of forced circulation high-efficiency axial-flow pump, including anti-backflow device body, it is characterised in that: described anti-backflow device body is provided with helicla flute.
The spiral force that helicla flute of the present invention produces points to impeller.
Wherein one end of anti-backflow device body of the present invention is set to streamlined and fairshaped concave surface and points to impeller direction.
The present invention improves operational efficiency, enhances anti-wear performance and corrosion resistant performance, extends maintenance period.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
In figure: 1, helicla flute；2, anti-backflow device body.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
With reference to accompanying drawing, the anti-backflow device of forced circulation high-efficiency axial-flow pump, including anti-backflow device body 2, it is characterized in that: described anti-backflow device body 2 is provided with helicla flute 1, the spiral force that described helicla flute 1 produces points to impeller, and wherein one end of described anti-backflow device body 2 is set to streamlined and fairshaped concave surface and points to impeller direction.When being embodied as, the present invention devises an anti-backflow device pointing to impeller with helicla flute and spiral force in pump housing wheel hub, this reflux changes the distribution of pump internal coiling stream completely, the problem solving clearance backflow, simultaneously as fluid is effectively stoped outside mechanical seal by the spiral force that helicla flute produces, make service life of mechanical seal from original average less than three months, bring up to more than ten months, be more than 3 times of original service life；Secondly, impeller direction is pointed to owing to wherein one end of anti-backflow device is set to streamlined and fairshaped concave surface, many recirculating zones helical source of original axial-flow pump is destroyed or reduces, when operational factor is constant, running current drops to 298～305A from original 330～340A, and operational efficiency on average improves about 10%；The present invention be introduce, digestion basis on, improve improve, optimize design while, a kind of anti-backflow device evaporating post forced circulation axial-flow pump present situation for alumina industry and design, for industry energy conservation potentiation, saving cost, improve environment, extend the plant maintenance cycle.
Claims (1)
1. the anti-backflow device of forced circulation high-efficiency axial-flow pump, including anti-backflow device body (2), it is characterised in that: described anti-backflow device body (2) is provided with helicla flute (1)；The spiral force that described helicla flute (1) produces points to impeller, and wherein one end of described anti-backflow device body (2) is set to streamlined and fairshaped concave surface and points to impeller direction；When being embodied as, anti-backflow device changes the distribution of pump internal coiling stream completely, the problem solving clearance backflow, simultaneously, fluid is effectively stoped outside mechanical seal by the spiral force produced due to helicla flute, make service life of mechanical seal from original average less than three months, brought up to more than ten months, be more than 3 times of original service life；Secondly, impeller direction is pointed to owing to wherein one end of anti-backflow device is set to streamlined and fairshaped concave surface, many recirculating zones helical source of original axial-flow pump is destroyed or reduces, when operational factor is constant, running current drops to 298～305A from original 330～340A, and operational efficiency on average improves 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310252361.0A CN103321936B (en) | 2013-06-24 | 2013-06-24 | The anti-backflow device of forced circulation high-efficiency axial-flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310252361.0A CN103321936B (en) | 2013-06-24 | 2013-06-24 | The anti-backflow device of forced circulation high-efficiency axial-flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321936A CN103321936A (en) | 2013-09-25 |
| CN103321936B true CN103321936B (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310252361.0A Active CN103321936B (en) | 2013-06-24 | 2013-06-24 | The anti-backflow device of forced circulation high-efficiency axial-flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103321936B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546656Y (en) * | 2001-11-16 | 2003-04-23 | 徐瑞堂 | Vertical acid and alkali-proof pump connected with special outlet and inlet |
| CN201858196U (en) * | 2010-10-25 | 2011-06-08 | 江苏双达泵阀集团有限公司 | Forced circulating pump |
| CN202673694U (en) * | 2012-05-11 | 2013-01-16 | 唐维 | Rotor pump |
| CN203335455U (en) * | 2013-06-24 | 2013-12-11 | 江苏英特泵阀制造有限公司 | Reflux preventing device of forced circulation efficient axial flow pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092439A (en) * | 2002-08-29 | 2004-03-25 | Ebara Corp | Vertical shaft pump |
-
2013
- 2013-06-24 CN CN201310252361.0A patent/CN103321936B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546656Y (en) * | 2001-11-16 | 2003-04-23 | 徐瑞堂 | Vertical acid and alkali-proof pump connected with special outlet and inlet |
| CN201858196U (en) * | 2010-10-25 | 2011-06-08 | 江苏双达泵阀集团有限公司 | Forced circulating pump |
| CN202673694U (en) * | 2012-05-11 | 2013-01-16 | 唐维 | Rotor pump |
| CN203335455U (en) * | 2013-06-24 | 2013-12-11 | 江苏英特泵阀制造有限公司 | Reflux preventing device of forced circulation efficient axial flow pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321936A (en) | 2013-09-25 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Anti reflux device for forced circulation high-efficiency axial flow pump Effective date of registration: 20230803 Granted publication date: 20160727 Pledgee: Bank of Jiangsu Co.,Ltd. Taizhou Branch Pledgor: JIANGSU YINGTE PUMP & VALVE MANUFACTURING CO.,LTD. Registration number: Y2023980050663 |