CN2568862Y - Centrifugal pump with induced wheel - Google Patents
Centrifugal pump with induced wheel Download PDFInfo
- Publication number
- CN2568862Y CN2568862Y CN 02220360 CN02220360U CN2568862Y CN 2568862 Y CN2568862 Y CN 2568862Y CN 02220360 CN02220360 CN 02220360 CN 02220360 U CN02220360 U CN 02220360U CN 2568862 Y CN2568862 Y CN 2568862Y
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- China
- Prior art keywords
- inducer
- stage
- centrifugal pump
- degree
- pump
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- Expired - Fee Related
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Abstract
The utility model relates to a centrifugal pump with an inducing wheel, which is characterized in that an inducing wheel mechanism is composed of a two-stage inducing wheel. The pump enables an impeller to obtain high cavitation erosion performance and the inducing wheel can be obtained by a mechanical processing mode and thus manufacture cost is reduced.
Description
Technical field
The utility model relates to a kind of centrifugal pump, exactly is the centrifugal pump with inducer.
Background technique
The filter complexes sparge water recycle pump that Tongling copper mine is used, because the specific use of this device, the pump inlet liquid storage tank is necessary for high vacuum state, and this device folding net positive suction head only has NPSHr=0.6m, requires the necessary NPSH NPSHr≤0.5m of pump like this.So low net positive suction head is a problem that is difficult to solution in the pump field, general conventional measure almost can't solve, traditional inducer is the equidistant inducer of one-level, because the import and export established angle unanimity of its blade, limited the raising limit of its cavitation performance, just more difficult when NPSHr≤1m.On principle, equidistant inducer is an inducer pattern preferably; But it can not obtain by machining mode, must adopt precision casting, can increase cost like this, and is inadvisable especially to small lot batch manufacture especially.
Summary of the invention
For solving the problem of high cavitation performance, by analysing in depth cavitation mechanism, existing inducer mechanism is improved, the centrifugal pump that a kind of cavitation performance height, processing technology are simple, have the two-stage inducer is provided.
Concrete organization plan is such:
Centrifugal pump with inducer comprises the pump housing, rear end cover, inducer mechanism, impeller, pump shaft and middle frame etc., it is characterized in that: described inducer mechanism is made up of the two-stage inducer.
Described two-stage inducer is equidistant helical pitch; First order inducer rear end is provided with tapped hole, and second level inducer front end is provided with the bolt that cooperates with first order inducer tapped hole, and the two-stage inducer is by being threaded.
In the described two-stage inducer, the laying angle of its first order inducer is 5 degree～7 degree, and the laying angle of second level inducer is 9 degree～11 degree.
The utility model is set up the one-level inducer on the basis of existing one-level inducer, make impeller have high cavitation performance, and be enough to explanation by the cavitation performance experiment of no inducer, the cavitation performance experiment of second level inducer, the cavitation performance experiment (seamlessly transitting naturally) of two-stage inducer, cavitation performance experiment (intermediate angle transition) four laboratory datas of two-stage inducer, see the following form:
| Sequence number | Test number | The test explanation | Test flow m3/ | NPSHr m | |
| 1 | Test one | No inducer | 7.2 | 1.5 | |
| 2 | Test two | Second level inducer | 7.2 | 1.14 | |
| 3 | Test three | The transition of two-stage inducer nature | 7.2 | 0.50 | |
| 4 | 9.0 | 0.70 | |||
| 5 | Test four | Two-stage inducer middle transition has phase difference | 7.2 | 0.86 |
The utility model reduces labor intensity on the other hand, raises labour efficiency, because inducer can obtain by the mode of machining, so reduced manufacture cost, has good social benefit and economic benefit, has vast market prospect and development potentiality.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
As seen from Figure 1, have the centrifugal pump of inducer, comprise the pump housing 1, rear end cover 2, inducer mechanism, impeller 3, pump shaft 4 and middle frame 5 etc., its inducer mechanism is made up of first order inducer 6 and second level inducer 7 two-stage inducers.
First, second grade inducer 6,7 is equidistant helical pitch.There is tapped hole first order inducer 6 rear ends, and inducer 7 front ends in the second level have the bolt that cooperates with first order inducer 6 tapped holes, and the two-stage inducer is by being threaded.
In the two-stage inducer, the laying angle of its first order inducer is 6 degree, and the laying angle of second level inducer is 10 degree.
The utility model adopts the two-stage inducer, and is close with not equidistant inducer on principle.The blade import laying angle of the equidistant inducer 6 of the first order is that 6 degree are relatively little, makes the stagger angle of blade and flow angle suitable, makes import not produce liquid flowing loss; Second level inducer 7 adopts the bigger exit installation angle of 10 degree, can produce higher lift like this, makes the main impeller import that higher pressurized effect be arranged, and is unlikely to take place cavitation.Thereby the combination by the two-stage inducer, and in certain using scope, can obtain the not effect of equidistant inducer.
Claims (3)
1, the centrifugal pump that has inducer comprises the pump housing, rear end cover, inducer mechanism, impeller, pump shaft and middle frame etc., it is characterized in that: described inducer mechanism is made up of the two-stage inducer.
2, the centrifugal pump with inducer according to claim 1 is characterized in that: described two-stage inducer is equidistant helical pitch; First order inducer rear end is provided with tapped hole, and second level inducer front end is provided with the bolt that cooperates with first order inducer tapped hole, and the two-stage inducer is by being threaded.
3, the centrifugal pump with inducer according to claim 1 is characterized in that: in the described two-stage inducer, the laying angle of its first order inducer is 5 degree～7 degree, and the laying angle of second level inducer is 9 degree～11 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02220360 CN2568862Y (en) | 2002-04-29 | 2002-04-29 | Centrifugal pump with induced wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02220360 CN2568862Y (en) | 2002-04-29 | 2002-04-29 | Centrifugal pump with induced wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2568862Y true CN2568862Y (en) | 2003-08-27 |
Family
ID=33698662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02220360 Expired - Fee Related CN2568862Y (en) | 2002-04-29 | 2002-04-29 | Centrifugal pump with induced wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2568862Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538537A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of high speed inducer and its manufacturing method inhibiting cavitation oscillation |
| CN111112950A (en) * | 2019-12-24 | 2020-05-08 | 浙江水利水电学院 | High-speed inducer applicable to low-temperature environment and manufacturing method thereof |
-
2002
- 2002-04-29 CN CN 02220360 patent/CN2568862Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538537A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of high speed inducer and its manufacturing method inhibiting cavitation oscillation |
| CN111112950A (en) * | 2019-12-24 | 2020-05-08 | 浙江水利水电学院 | High-speed inducer applicable to low-temperature environment and manufacturing method thereof |
| CN111112950B (en) * | 2019-12-24 | 2021-01-12 | 浙江水利水电学院 | High-speed inducer applicable to low-temperature environment and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |