CN216199212U - Impeller device for centrifugal pump - Google Patents
Impeller device for centrifugal pump Download PDFInfo
- Publication number
- CN216199212U CN216199212U CN202122549503.2U CN202122549503U CN216199212U CN 216199212 U CN216199212 U CN 216199212U CN 202122549503 U CN202122549503 U CN 202122549503U CN 216199212 U CN216199212 U CN 216199212U
- Authority
- CN
- China
- Prior art keywords
- pin shaft
- stage pin
- impeller
- spline
- stage
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an impeller device for a centrifugal pump, which comprises: an impeller including a plurality of blades uniformly distributed; the middle position of the impeller is provided with a first bulge part and a second bulge part which are bulged towards two axial sides of the impeller, the first bulge part is provided with a connecting part, and an internal spline is arranged in the connecting part; the multi-stage pin shaft at least comprises a first-stage pin shaft, a second-stage pin shaft and a third-stage pin shaft which are connected, wherein the diameters of the first-stage pin shaft, the second-stage pin shaft and the third-stage pin shaft are sequentially increased; the second-stage pin shaft is provided with a spline part, and the spline part is provided with an external spline matched with the internal spline; the second-stage pin shaft of the multi-stage pin shaft is connected with the impeller through a spline, the first-stage pin shaft of the multi-stage pin shaft is connected with a locking nut, and the locking nut is partially arranged in the second protruding portion. Through this application make the static balance and the dynamic balance of impeller good, vibration and noise when having reduced the water pump operation have improved water pump performance.
Description
Technical Field
The utility model relates to an impeller device, in particular to an impeller device for a centrifugal pump.
Background
Centrifugal pumps are pumps that transport liquids by centrifugal force generated when an impeller rotates. The impeller of the conventional centrifugal pump is generally installed by positioning with pins and fixing with screws. The method has the advantages that the pins are easy to wear and have short service life due to the fact that the pins are stressed on the pins. And the static balance and the dynamic balance of the impeller are unstable, so that the vibration and the noise of the water pump are large in the running process, and the performance of the water pump is further influenced.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an impeller device for a centrifugal pump, which solves the problem that the static balance and the dynamic balance of an impeller of the existing centrifugal pump are unstable.
According to an embodiment of the present invention, there is provided an impeller device for a centrifugal pump, including:
an impeller comprising a plurality of uniformly distributed blades; the middle position of the impeller is provided with a first bulge part and a second bulge part which are bulged towards two axial sides of the impeller, the first bulge part is provided with a connecting part, and an internal spline is arranged in the connecting part;
the multi-stage pin shaft at least comprises a first-stage pin shaft, a second-stage pin shaft and a third-stage pin shaft which are connected, wherein the diameters of the first-stage pin shaft, the second-stage pin shaft and the third-stage pin shaft are sequentially increased; the second-stage pin shaft is provided with a spline part, and the spline part is provided with an external spline matched with the internal spline;
the second-stage pin shaft of the multistage pin shaft is connected with the impeller through a spline, the first-stage pin shaft of the multistage pin shaft is connected with a locking nut, and the locking nut is partially arranged in the second protruding portion.
Wherein, in the axial direction, the length of the internal spline of the connecting part is the same as the length of the spline part.
Wherein, first stage round pin axle has the external screw thread, lock nut has the internal thread.
The impeller is provided with a boss arranged in the second protruding portion, and the inner diameter of the boss is larger than the outer diameter of the first-stage pin shaft.
According to the technical scheme of the utility model, the impeller of the centrifugal pump is connected with the multistage pin shaft by adopting a spline structure, so that the static balance and the dynamic smoothness of the impeller are good, the vibration and the noise of the water pump during operation are reduced, and the performance of the water pump is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a schematic view of an impeller and multi-stage pin connection according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a multi-stage pin according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
According to an embodiment of the utility model, an impeller device for a centrifugal pump is proposed, with reference to fig. 1 and 2, comprising: the impeller 1 and the multistage pin shaft 2 are connected.
The impeller comprises an impeller 1 and is characterized in that a plurality of blades are uniformly distributed on the outer edge of the impeller 1, the blades can be made of plastic, and the hardness of the material of the blades is far lower than that of the material of a pin shaft. The impeller 1 is provided with a first bulge part 11 and a second bulge part 12 which are bulged towards two axial sides of the impeller at the middle position, wherein the first bulge part 11 is provided with a connecting part, and an internal spline is arranged in the connecting part.
Referring to fig. 2, the multi-stage pin 2 is a slender metal rod, and from the near end to the far end of the multi-stage pin 2, the multi-stage pin 2 at least includes a first-stage pin 21, a second-stage pin 22, and a third-stage pin 23 that are coaxial and connected, wherein the diameters of the first-stage pin 21, the second-stage pin 22, and the third-stage pin 23 are sequentially increased, and the first-stage pin 21, the second-stage pin 22, and the third-stage pin 23 can be integrally formed during manufacturing. In some embodiments of the present application, the multi-stage pin 2 may further include other pin shaft portions such as a fourth-stage pin shaft or a fifth-stage pin shaft, which are not described herein again.
As shown in the figure, first level round pin axle 21 has the external screw thread, second level round pin axle 22 has spline portion, spline portion be provided with internal spline matched with external spline to spline portion is the same with the axial length of connecting portion, makes the two spline fit that can closely. When the impeller 1 and the multistage pin shaft 2 are connected, the second-stage pin shaft 22 of the multistage pin shaft 2 is connected with the connecting part of the first protruding part 11 of the impeller 1 through splines, and the static balance and dynamic balance of the impeller are good due to the fact that the spline structure (connection mode) is a concentric structure.
With continued reference to the drawings, after the impeller 1 is splined to the multistage pin shaft 2, the first-stage pin shaft 21 of the multistage pin shaft 2 passes through the first protrusion 11 and is in threaded connection with the lock nut 3 at the second protrusion 12, wherein the first-stage pin shaft 21 has an external thread and the lock nut 3 has an internal thread. In the embodiment of the present application, impeller 1 is provided with circular boss 15, boss 15 sets up in second bulge 12, and the internal diameter of boss 15 is greater than the external diameter of first order round pin axle 21 for first order round pin axle 21 can pass boss 15 and be connected with lock nut 3.
According to the technical scheme of the utility model, the impeller of the centrifugal pump is connected with the multistage pin shaft by adopting a spline structure, so that the static balance and the dynamic smoothness of the impeller are good, the vibration and the noise of the water pump during operation are reduced, and the performance of the water pump is improved.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. An impeller device for a centrifugal pump, comprising:
an impeller comprising a plurality of uniformly distributed blades; the middle position of the impeller is provided with a first bulge part and a second bulge part which are bulged towards two axial sides of the impeller, the first bulge part is provided with a connecting part, and an internal spline is arranged in the connecting part;
the multi-stage pin shaft at least comprises a first-stage pin shaft, a second-stage pin shaft and a third-stage pin shaft which are connected, wherein the diameters of the first-stage pin shaft, the second-stage pin shaft and the third-stage pin shaft are sequentially increased; the second-stage pin shaft is provided with a spline part, and the spline part is provided with an external spline matched with the internal spline;
the second-stage pin shaft of the multistage pin shaft is connected with the impeller through a spline, the first-stage pin shaft of the multistage pin shaft is connected with a locking nut, and the locking nut is partially arranged in the second protruding portion.
2. The impeller device of claim 1, wherein the length of the internal spline of the connecting portion is the same as the length of the spline portion in the axial direction.
3. The impeller device of claim 1, wherein said first stage pin has an external thread and said lock nut has an internal thread.
4. The impeller device of claim 1, wherein said impeller has a boss disposed within said second boss, said boss having an inner diameter greater than an outer diameter of said first stage pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122549503.2U CN216199212U (en) | 2021-10-22 | 2021-10-22 | Impeller device for centrifugal pump |
| PCT/CN2021/129306 WO2023065413A1 (en) | 2021-10-22 | 2021-11-08 | Impeller device for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122549503.2U CN216199212U (en) | 2021-10-22 | 2021-10-22 | Impeller device for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199212U true CN216199212U (en) | 2022-04-05 |
Family
ID=80887246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122549503.2U Active CN216199212U (en) | 2021-10-22 | 2021-10-22 | Impeller device for centrifugal pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN216199212U (en) |
| WO (1) | WO2023065413A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643047Y (en) * | 2003-09-23 | 2004-09-22 | 上海连成（集团）有限公司 | Fixation structure on shaft of impeller of punch multiple-stage centrifugal pump |
| CN201546969U (en) * | 2009-11-13 | 2010-08-11 | 天津市永恒电机厂 | Stainless steel horizontal-type end suction multi-stage centrifugal pump |
| CN101846081B (en) * | 2010-05-18 | 2012-07-04 | 江苏大学 | Horizontal radial multi-stage centrifugal pump |
| CN201723492U (en) * | 2010-07-09 | 2011-01-26 | 南通江华机械有限公司 | Water pump with pump shaft and impeller in splined joint |
| JP2012162988A (en) * | 2011-02-03 | 2012-08-30 | Jtekt Corp | Water pump system |
| CN104832451A (en) * | 2015-05-28 | 2015-08-12 | 浙江南元泵业有限公司 | Water pump shaft structure |
| JP6948198B2 (en) * | 2017-09-22 | 2021-10-13 | 株式会社荏原製作所 | Centrifugal pump |
-
2021
- 2021-10-22 CN CN202122549503.2U patent/CN216199212U/en active Active
- 2021-11-08 WO PCT/CN2021/129306 patent/WO2023065413A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023065413A1 (en) | 2023-04-27 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |