CN204783812U - Impeller of centrifugal pump and assembly structure of pump shaft - Google Patents
Impeller of centrifugal pump and assembly structure of pump shaft Download PDFInfo
- Publication number
- CN204783812U CN204783812U CN201520331210.9U CN201520331210U CN204783812U CN 204783812 U CN204783812 U CN 204783812U CN 201520331210 U CN201520331210 U CN 201520331210U CN 204783812 U CN204783812 U CN 204783812U
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- Prior art keywords
- impeller
- pump
- section
- pump shaft
- hole
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- Expired - Fee Related
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Abstract
Impeller of centrifugal pump and assembly structure of pump shaft, the shaft hole of impeller is the shoulder hole, and a section of impeller hub rear end face of being close to of shoulder hole be big hole section, is close to a section of before impeller hub terminal surface and is little hole section, and the keyway of impeller is only established in hole section greatly, and little hole section does not have the keyway. The utility model discloses the main part that can guarantee the pump shaft has the great diameter of axle, improves the rigidity of pump shaft, and simultaneously, the back shroud of impeller can down squint, reduces the striking loss that the fluid got into the impeller, stabilizes the fluidic flow state, improves the cavitation performance of pump, consequently, the utility model discloses strengthen the rigidity of pump shaft in the time of possible improvement centrifugal pump cavitation nature.
Description
Technical field
The utility model relates to centrifugal pump, particularly relates to the assembly structure of impeller on pump shaft of centrifugal pump.
Background technique
In the design processing technique of centrifugal pump, improving the rigidity of pump shaft by adding large-diameter, is the more effective way of one.At present, the Normal practice adding large-diameter is, while adding large-diameter, expand the shaft hole diameter of impeller, and after the expansion of the shaft hole diameter of impeller, the hub size of impeller will correspondingly increase, thereupon, the back shroud of impeller has to up offset, and the shock loss that result causes fluid to enter impeller increases, fluid flow state is unstable, reduces the cavitation performance of centrifugal pump.
Visible, there is following problem in the impeller of existing centrifugal pump and the assembly structure of pump shaft: the rigidity that improve pump shaft, must sacrifice the cavitation performance of pump.And cavitation performance will be ensured, rigidity is difficult to again improve again, causes the situation that a kind of fish and bear's paw can not be held concurrently.The pump of the centrifugal pump, particularly small axle diameter of present domestic current use, the problem that the safe clearance of axle still has the deficiency, adds potential safety hazard.
Model utility content
The purpose of this utility model is to provide a kind of impeller of centrifugal pump and the assembly structure of pump shaft, and this assembly structure can improve the rigidity of pump shaft, can ensure again the cavitation performance of pump.
The utility model is achieved in that the impeller of centrifugal pump and the assembly structure of pump shaft, comprise impeller and pump shaft, impeller is provided with the axis hole running through impeller hub front and rear end, axis hole is inserted from impeller hub ear end face in the end of pump shaft, the axis hole of impeller is shoulder hole, and one section of the close impeller hub ear end face of shoulder hole is large endoporus section, and one section near impeller hub front-end face is little endoporus section, the keyway of impeller is only located at large endoporus section, and little endoporus section does not have keyway.
The utility model has the advantages that, the axis hole of impeller is shoulder hole, one section of the close impeller hub ear end face of axis hole is large endoporus section, can ensure that the main body of pump shaft has the larger diameter of axle, improve the rigidity of pump shaft, on the other hand, one section of the close impeller hub front-end face of axis hole is little endoporus section, the diameter of impeller hub front-end face is without the need to increasing, and there is no keyway due to little endoporus section, therefore, the back shroud of impeller is not only without the need to up offseting, can down offset on the contrary, thus reduce the shock loss that fluid enters impeller, the fluidised form of stabilized fluid, improve the cavitation performance of pump.Visible, the utility model strengthens the rigidity of pump shaft while can accomplishing to improve Cavitation Occurred in Centrifugal Pumps.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 draws separately the impeller in Fig. 1.
Embodiment
Simultaneously see Fig. 1 and Fig. 2, the impeller of centrifugal pump and the assembly structure of pump shaft, comprise impeller 1 and pump shaft 2, impeller 1 is provided with the axis hole running through impeller hub front-end face 1a and ear end face 1b, and axis hole is inserted from impeller hub ear end face 1b in the end of pump shaft 2.Axis hole is shoulder hole, and one section of the close impeller hub ear end face 1b of shoulder hole is large endoporus section 3, and one section near impeller hub front-end face 1a is little endoporus section 4.The keyway 5 of impeller is only located at large endoporus section 3, and little endoporus section 4 does not have keyway.
From Fig. 1 and Fig. 2, the large endoporus section 3 of axis hole can ensure that the main body of pump shaft 2 has the larger diameter of axle, improves the rigidity of pump shaft 2.On the other hand, Fig. 2 dotted line depicts when the diameter of axle of pump shaft main body is constant, if adopt the design proposal of prior art, the position at the back shroud place of impeller 1.As seen from Figure 2, because a section of close impeller hub front-end face 1a of axis hole is little endoporus section 4, and little endoporus section 4 does not have keyway, therefore, the back shroud 6 of impeller 1 down offsets than the position shown in dotted line, thus reducing the shock loss that fluid enters impeller, the fluidised form of stabilized fluid, improves the cavitation performance of pump.
Claims (1)
1. the impeller of centrifugal pump and the assembly structure of pump shaft, comprise impeller and pump shaft, impeller is provided with the axis hole running through impeller hub front and rear end, axis hole is inserted from impeller hub ear end face in the end of pump shaft, it is characterized in that: the axis hole of impeller is shoulder hole, one section of the close impeller hub ear end face of shoulder hole is large endoporus section, and one section near impeller hub front-end face is little endoporus section, the keyway of impeller is only located at large endoporus section, and little endoporus section does not have keyway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331210.9U CN204783812U (en) | 2015-05-21 | 2015-05-21 | Impeller of centrifugal pump and assembly structure of pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520331210.9U CN204783812U (en) | 2015-05-21 | 2015-05-21 | Impeller of centrifugal pump and assembly structure of pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783812U true CN204783812U (en) | 2015-11-18 |
Family
ID=54523868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520331210.9U Expired - Fee Related CN204783812U (en) | 2015-05-21 | 2015-05-21 | Impeller of centrifugal pump and assembly structure of pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930665A (en) * | 2018-07-17 | 2018-12-04 | 赵浩浩 | It is a kind of for compressor or the blade wheel structure of air blower |
-
2015
- 2015-05-21 CN CN201520331210.9U patent/CN204783812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930665A (en) * | 2018-07-17 | 2018-12-04 | 赵浩浩 | It is a kind of for compressor or the blade wheel structure of air blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee after: GUANGDONG KENFLO PUMP CO., LTD. Address before: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee before: Guangdong Foshan Water Pump Factory Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160909 Address after: 563300 hi tech Industrial Park, Fenghua Industrial Park, Suiyang County, Guizhou, Zunyi Patentee after: ZUNYI KENFLO PUMP CO., LTD. Address before: 528000 Guangdong Province, Foshan city Chancheng District River Road No. 14 Patentee before: GUANGDONG KENFLO PUMP CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180521 |