CN102927043A - Impeller blank of centrifugal pump - Google Patents
Impeller blank of centrifugal pump Download PDFInfo
- Publication number
- CN102927043A CN102927043A CN2012104988923A CN201210498892A CN102927043A CN 102927043 A CN102927043 A CN 102927043A CN 2012104988923 A CN2012104988923 A CN 2012104988923A CN 201210498892 A CN201210498892 A CN 201210498892A CN 102927043 A CN102927043 A CN 102927043A
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- CN
- China
- Prior art keywords
- impeller
- cover plate
- centrifugal pump
- pit
- impeller blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to an impeller blank of a centrifugal pump. The impeller blank comprises a front cover plate, a rear cover plate, and blades connected between the front cover plate and the rear cover plate; and a hub is arranged in the center of the rear cover plate. The impeller blank is characterized in that a plurality of uniformly-distributed pits positioned around the hub are formed on the outer side surface of the rear cover plate; and the pits correspond to balance holes in the processed impeller in position. According to the invention, the pits are directly casted on positions, where the balance holes need to be processed, on the impeller blank, so that the process of marking off for drilling the balance holes during processing the impeller can be saved, the pits can be directly used as positioning holes for drilling the balance holes, and as a result, the process can be saved, the processing period can be shortened, the production efficiency can be improved, and the operation is simple and convenient.
Description
Technical field
The present invention relates to centrifugal pump, specifically a kind of centrifugal pump impeller blank.
Background technique
The impeller of centrifugal pump is processed by spray.As shown in Figure 1 and Figure 2, impeller comprises front shroud 1, blade 2 and back shroud 3, and blade 2 is arranged between front shroud 1 and the back shroud 3, and the center of back shroud 3 is provided with wheel hub 5, and the back shroud 3 around wheel hub 5 is provided with a circle equalizing orifice 4.
In the prior art, the processing technology of the circle of one on the back shroud of impeller 3 equalizing orifice 4 is: first line, then boring.This processing technology operation is many, and the process-cycle is long, and manufacturing efficiency is low.
Summary of the invention
The present invention is directed to the problems referred to above, provide a kind of and shorten the process-cycle, the centrifugal pump impeller blank of enhancing productivity.
According to technological scheme of the present invention: a kind of centrifugal pump impeller blank, comprise front shroud, back shroud and be connected to described front shroud and described back shroud between blade, the center of described back shroud is provided with wheel hub, it is characterized in that: be provided with a plurality of uniform pit around described wheel hub on the outer side surface of described back shroud, the position of equalizing orifice on the impeller after the position of described pit and the processing is corresponding.
Described pit has six.
Described pit is conical bore.
The cone angle of described conical bore is 120 °.
Technique effect of the present invention is: the present invention directly casts out pit in the position that the impeller blank needs to process equalizing orifice, crossed process when boring equalizing orifice in the time of can saving Impeller Machining, can be directly take pit as location hole drill equalizing orifice, saved operation, shortened the process-cycle, improved manufacturing efficiency, and operation is easier.
Description of drawings
Fig. 1 is the structural representation of the impeller after processing.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
Among Fig. 1～Fig. 3, comprise front shroud 1, blade 2, back shroud 3, equalizing orifice 4, wheel hub 5, pit 6 etc.
As shown in Figure 3, the present invention is a kind of centrifugal pump impeller blank, comprise front shroud 1, back shroud 3 and be connected to front shroud 1 and back shroud 3 between blade 2, the center of back shroud 3 is provided with wheel hub 5, is provided with a plurality of uniform pit 6 around wheel hub 5 on the outer side surface of back shroud 3.The position of equalizing orifice 4 on the impeller after the position of pit 6 and the processing is corresponding.
Pit 6 has six.Pit 6 is conical bore, and the cone angle of conical bore is preferably 120 °.The conical bore of 120 ° of cone angles and the cone angle of drill bit adapt, and are convenient to the drill bit location.
The present invention directly casts out pit 6 in the position that the impeller blank needs to process equalizing orifice 4, crossed process when boring equalizing orifice 4 in the time of can saving Impeller Machining, can be directly take pit 6 as location hole drill equalizing orifice 4, saved operation, shortened the process-cycle, improved manufacturing efficiency, and operation is easier.
Claims (4)
1. centrifugal pump impeller blank, comprise front shroud (1), back shroud (3) and be connected to described front shroud (1) and described back shroud (3) between blade (2), the center of described back shroud (3) is provided with wheel hub (5), it is characterized in that: be provided with a plurality of uniform pit (6) around described wheel hub (5) on the outer side surface of described back shroud (3), the position of equalizing orifice (4) on the impeller after the position of described pit (6) and the processing is corresponding.
2. according to centrifugal pump impeller blank claimed in claim 1, it is characterized in that: described pit (6) has six.
3. according to claim 1 or 2 described centrifugal pump impeller blanks, it is characterized in that: described pit (6) is conical bore.
4. according to centrifugal pump impeller blank claimed in claim 3, it is characterized in that: the cone angle of described conical bore is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104988923A CN102927043A (en) | 2012-11-29 | 2012-11-29 | Impeller blank of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104988923A CN102927043A (en) | 2012-11-29 | 2012-11-29 | Impeller blank of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927043A true CN102927043A (en) | 2013-02-13 |
Family
ID=47641938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104988923A Pending CN102927043A (en) | 2012-11-29 | 2012-11-29 | Impeller blank of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927043A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262123Y (en) * | 1996-06-11 | 1997-09-10 | 哈尔滨第二水泵厂 | Circulation pump for hot and cold water |
| US6220819B1 (en) * | 2000-01-12 | 2001-04-24 | Industrial Technology Research Institute | Centrifugal pump impeller |
| CN2738010Y (en) * | 2004-11-19 | 2005-11-02 | 上海东方泵业(集团)有限公司 | Canned motor pump axial force balancing device |
| CN101890649A (en) * | 2010-06-24 | 2010-11-24 | 山西汤荣机械制造股份有限公司 | Drilling jig for isometric balance holes of brake drum |
| CN202971305U (en) * | 2012-11-29 | 2013-06-05 | 无锡艾比德泵业有限公司 | Centrifugal pump impeller blank |
-
2012
- 2012-11-29 CN CN2012104988923A patent/CN102927043A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2262123Y (en) * | 1996-06-11 | 1997-09-10 | 哈尔滨第二水泵厂 | Circulation pump for hot and cold water |
| US6220819B1 (en) * | 2000-01-12 | 2001-04-24 | Industrial Technology Research Institute | Centrifugal pump impeller |
| CN2738010Y (en) * | 2004-11-19 | 2005-11-02 | 上海东方泵业(集团)有限公司 | Canned motor pump axial force balancing device |
| CN101890649A (en) * | 2010-06-24 | 2010-11-24 | 山西汤荣机械制造股份有限公司 | Drilling jig for isometric balance holes of brake drum |
| CN202971305U (en) * | 2012-11-29 | 2013-06-05 | 无锡艾比德泵业有限公司 | Centrifugal pump impeller blank |
Non-Patent Citations (2)
| Title |
|---|
| 柳建国: "熔模铸造工艺精益设计技术探讨", 《铸造》 * |
| 萧前: "《化工机械制造工艺学》", 30 September 1990 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130213 |