CN105570198A - Pump structure - Google Patents
Pump structure Download PDFInfo
- Publication number
- CN105570198A CN105570198A CN201610083244.XA CN201610083244A CN105570198A CN 105570198 A CN105570198 A CN 105570198A CN 201610083244 A CN201610083244 A CN 201610083244A CN 105570198 A CN105570198 A CN 105570198A
- Authority
- CN
- China
- Prior art keywords
- nut
- impeller
- pump
- pump structure
- inner chamber
- 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.)
- Pending
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Classifications
-
- 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
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid 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
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of pump manufacturing, in particular to a pump structure. The pump structure comprises an impeller, a pump shaft and a nut body used for fixing the impeller to the pump shaft. The nut body comprises a first nut attached to the impeller, and a second nut connected with the first nut. The first nut is provided with an inner cavity used for containing the second nut, the second nut is inserted in the inner cavity of the first nut, and the second nut is internally provided with a threaded hole connected with the pump shaft. By means of the pump structure of the technical scheme, the attaching degree between the nut body and the impeller is better, the fastening performance of the impeller and the nut is good, and the running efficiency of the impeller is improved by 3-5%.
Description
Technical field
The present invention relates to the technical field that pump manufactures, be specifically related to a kind of pump structure.
Background technique
Traditional pump mainly comprises impeller, pump shaft, axle sleeve and impeller nut, and impeller is inserted in pump shaft, and pump shaft coordinates with axle sleeve, and impeller nut screws in pump shaft.Usually, in centrifugal pump structure, the fixing of impeller is all be fixed on pump shaft with impeller nut by impeller, and impeller nut is threaded with pump shaft, and inconsistent with impeller, prevents impeller from getting loose when being beneficial to rotate forward.Common centrifugal pump presses thread rotary orientation design due to pump shaft and impeller, ensure that pump rotor turns more tight when rotating, if but pump rotor produces reverse time, due to the characteristic of screw thread, impeller nut then produces counter-rotating, causes impeller to loosen, and then cannot impeller be fixed, finally cause impeller to come off.
In order to address this problem, traditional method installs lock washer between impeller nut and impeller, but the deficiency of this structure is: for the impeller that weight is very large, during owing to rotating, the inertia of impeller is very large, when impeller reverses, lock washer is easy to be cut off, and causes impeller loose or dislocation.
Based on the above deficiency existed, at present traditional method is improved, inventor has devised a kind of impeller nut anti-loose structure, see the Chinese patent document that Authorization Notice No. is " CN202833284U ", this impeller nut anti-loose structure comprises impeller, pump shaft and impeller nut, it is also provided with Cock screw, positioning groove is arranged at impeller nut top centrally axial circumference array, the bottom plane of positioning groove and the center line of impeller nut perpendicular, the bottom plane of positioning groove is vertically provided with tapped through hole, impeller and inconsistent of impeller nut are provided with tapped hole, tapped through hole is corresponding with tapped hole, and center line on the same axis, the tapped through hole that Cock screw is provided with through impeller nut is fastenedly connected through tapped hole and impeller.But the pump structure of prior art still exists following technical problem: the laminating degree of impeller nut and impeller is poor, make impeller nut to the fastening poor performance of impeller, thus cause the operational efficiency of impeller low.
Summary of the invention
The object of this invention is to provide a kind of pump structure, poor with the laminating degree of the impeller nut and impeller that overcome the pump structure of prior art, the problem that the operational efficiency of the fastening poor performance of impeller nut, impeller is low.
To achieve these goals, the invention provides a kind of pump structure, comprise impeller, pump shaft and for described impeller being fixed on the nut main body on described pump shaft, described nut main body comprises first nut of fitting with described impeller and the second nut be connected with described first nut; Described first nut is provided with the inner chamber for holding described second nut, and described second nut is inserted in the inner chamber of described first nut, is provided with the tapped hole be connected with described pump shaft in described second nut.
Preferably, conveniently process, and be convenient to installation and removal, described first nut and described second nut clamping.
Preferably, in order to better by the first nut together with the second nut compact siro spinning technology, described second nut is provided with boss, and the inner chamber of described first nut is provided with the groove mated with described boss, and described second nut is by the groove clamping of described boss and described first nut intracavity.
Preferably, in order to be convenient to install further, between described first nut and described second nut, space is left.
Preferably, consider that the first nut can be fitted with impeller better, described first nut is cone structure.
Preferably, in order to increase the tightness that the first nut is connected with the second nut further, simultaneously good with impeller stickiness, the outer surface that formed on the whole after described first nut is connected with described second nut is the cone structure seamlessly transitted.
Preferably, for the ease of the installation of the second nut, and in the process of installing, avoid the second nut end wearing and tearing, the end-beveling that described second nut is connected with described first nut.
Preferably, conveniently the first nut and the second nut being connected to form is an overall structure, ensure the using effect of nut main body, the joint that described second nut comprises supporting portion and coordinates with the inner chamber of described first nut, described joint inserts in the inner chamber of described first nut, and described supporting portion is supported on the outside of the inner chamber of described first nut.
Preferably, conveniently connect and play firm effect further, described first nut is provided with connecting passage along the joint place radial direction with described second nut.
Preferably, conveniently the second nut connection and play firm effect, the supporting portion of described second nut is provided with attachment hole.
A kind of pump structure provided by the present invention, it has following technique effect: the first nut arranges the inner chamber for holding described second nut, by the structure of inner chamber, the first nut and the second nut combinations are integrated, first nut and impeller form degree of laminating preferably, second nut is connected with pump shaft, the first nut made by this compound mode, second nut, pump shaft and impeller are fixed, closely cooperate together, therefore, first nut of fitting with impeller, second nut plays the effect of fixing impeller jointly, pump structure of the present invention is adopted to enhance the laminating degree with impeller, improve the tightness of impeller, improve the operational efficiency of impeller.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pump structure local of embodiments of the invention;
Fig. 2 is the structural representation of the nut main body of embodiments of the invention;
Fig. 3 is the structural representation of the first nut of embodiments of the invention;
Fig. 4 is the sectional view of the first nut of embodiments of the invention;
Fig. 5 is the structural representation of the second nut of embodiments of the invention;
Fig. 6 is the sectional view of the second nut of embodiments of the invention.
In figure: 1-nut main body, 11-first nut, 111-groove, 112-connecting passage, 12-second nut, 121-boss, 122-tapped hole, 123-attachment hole, 124-supporting portion, 13-space, 2-impeller, 3-pump shaft.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated:
As shown in figs 1 to 6: the invention provides a kind of pump structure, comprise impeller 2, pump shaft 3 and for impeller 2 being fixed on the nut main body 1 on pump shaft 3, nut main body 1 comprises first nut 11 of fitting with impeller 2 and the second nut 12 be connected with the first nut 11; First nut 11 is provided with the inner chamber for holding the second nut 12, and the second nut 12 is inserted in the inner chamber of the first nut 11, is provided with the tapped hole 122 be connected with pump shaft 3 in the second nut 12.Particularly, the end of pump shaft 3 is threaded with this second nut 12, by the first nut 11, the inner chamber for holding the second nut 12 is set, first nut 11 forms degree of laminating preferably with impeller 2, after the first nut 11 and the second nut 12 are combined into one, the first nut 11 is made to form degree of laminating preferably with impeller 2, second nut 12 is connected with pump shaft 3, the first nut 11 made by this compound mode, second nut 12, pump shaft 3 and impeller 2 are fixed, closely cooperate together, nut main body 1 is good with the laminating degree of impeller 2, improve the tightness of impeller 2.
First nut 11 can adopt clamping with the second nut 12, be threaded, the mode such as to weld, and conveniently dismantle, preferably, first nut 11 of the present embodiment and the second nut 12 adopt the mode of clamping, are convenient to installation and removal.Second nut 12 can also arrange boss 121, the inner chamber of the first nut 11 is provided with the groove 111 mated with boss 121, second nut 12 by groove 111 clamping of boss 121 and the first nut 11 inner chamber so that better by the first nut 11 together with the second nut 12 compact siro spinning technology.In addition, between the first nut 11 and the second nut 12, space 13 is left, in order to be convenient to install further.First nut 11, in cone structure, makes the first nut 11 to fit with impeller 2 better.
In addition, the outer surface that formed on the whole after the first nut 11 is connected with the second nut 12 is the cone structure seamlessly transitted, the tightness increasing by the first nut 11 be connected so that further with the second nut 12, simultaneously good with impeller 2 stickiness.In addition, the end-beveling that can also be connected with the first nut 11 at the second nut 12, for ease of the installation of the second nut 12, and can avoid the second nut 12 end wear in the process of installing.
Particularly, the joint that the second nut 12 can comprise supporting portion 124 and coordinate with the inner chamber of the first nut 11, joint inserts the inner chamber of the first nut 11, and supporting portion 124 is supported on the outside of the first nut 11.First nut 11 is provided with connecting passage 112 along the joint place radial direction with the second nut 12, the second nut 12 can be connected with the fastening piece of the first nut 11 further by prior art, thus play firm effect further.The supporting portion 124 of the second nut 12 can also arrange attachment hole 123, further facilitates and is connected with the first nut 11 by the second nut 12 by arranging existing fastening piece on the second nut 12, play firm effect further.In the present embodiment, the first nut 11 is in cone structure, and the outer surface after being connected with the second nut 12 to make the first nut 11 is the cone structure seamlessly transitted, and correspondingly, the end face at the two ends of the supporting portion 124 of the second nut 12 is arranged to the face seamlessly transitted.
Adopt the pump structure of technical solution of the present invention, the first nut 11 and the second nut 12 are combined into streamlined structure, and enhance the laminating degree with impeller, improve the tightness of impeller, the operational efficiency of impeller can improve 3-5%.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and replacement, these improve and replace and also should be considered as protection scope of the present invention.
Claims (10)
1. a pump structure, comprising impeller, pump shaft and for described impeller being fixed on the nut main body on described pump shaft, it is characterized in that: described nut main body comprises first nut of fitting with described impeller and the second nut be connected with described first nut; Described first nut is provided with the inner chamber for holding described second nut, and described second nut is inserted in the inner chamber of described first nut, is provided with the tapped hole be connected with described pump shaft in described second nut.
2. pump structure according to claim 1, is characterized in that: described first nut and described second nut clamping.
3. pump structure according to claim 2, is characterized in that: described second nut is provided with boss, and the inner chamber of described first nut is provided with the groove mated with described boss, and described second nut is by the groove clamping of described boss and described first nut intracavity.
4. pump structure according to claim 1, is characterized in that: leave space between described first nut and described second nut.
5. the pump structure according to any one of claim 1-4, is characterized in that: described first nut is cone structure.
6. the pump structure according to any one of claim 1-4, is characterized in that: the outer surface that formed on the whole after described first nut is connected with described second nut is the cone structure seamlessly transitted.
7. the pump structure according to any one of claim 1-4, is characterized in that: the end-beveling that described second nut is connected with described first nut.
8. the pump structure according to any one of claim 1-4, it is characterized in that: the joint that described second nut comprises supporting portion and coordinates with the inner chamber of described first nut, described joint inserts in the inner chamber of described first nut, and described supporting portion is supported on the outside of the inner chamber of described first nut.
9. pump structure according to claim 8, is characterized in that: described first nut is provided with connecting passage along the joint place radial direction with described second nut.
10. pump structure according to claim 8, is characterized in that: the supporting portion of described second nut is provided with attachment hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083244.XA CN105570198A (en) | 2016-02-05 | 2016-02-05 | Pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083244.XA CN105570198A (en) | 2016-02-05 | 2016-02-05 | Pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570198A true CN105570198A (en) | 2016-05-11 |
Family
ID=55880698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610083244.XA Pending CN105570198A (en) | 2016-02-05 | 2016-02-05 | Pump structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570198A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488073A (en) * | 2018-05-18 | 2018-09-04 | 广州市昕恒泵业制造有限公司 | A kind of environment-friendly type serum recycle pump group |
| CN109404050A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of structure for reducing Impeller Parts centre bore stress and concentrating |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207561A (en) * | 1989-02-07 | 1993-05-04 | Abb Flakt Ab | Device for assembling an impeller on a driving shaft |
| CN201526502U (en) * | 2009-09-30 | 2010-07-14 | 江苏双达工程技术研究中心有限公司 | Device for connecting pump shaft and impeller |
| CN202991906U (en) * | 2012-12-03 | 2013-06-12 | 高邮市邮元水泵厂 | Rotating body axial fastening structure on rotating shaft |
| CN104564794A (en) * | 2013-10-12 | 2015-04-29 | 史晨 | Locking structure of impeller shaft |
| CN204878251U (en) * | 2015-08-13 | 2015-12-16 | 扬州弘跃机械有限公司 | Mixed flow pump impeller lock nut |
| CN205478566U (en) * | 2016-02-05 | 2016-08-17 | 广州市昕恒泵业制造有限公司 | Pump structure |
-
2016
- 2016-02-05 CN CN201610083244.XA patent/CN105570198A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207561A (en) * | 1989-02-07 | 1993-05-04 | Abb Flakt Ab | Device for assembling an impeller on a driving shaft |
| CN201526502U (en) * | 2009-09-30 | 2010-07-14 | 江苏双达工程技术研究中心有限公司 | Device for connecting pump shaft and impeller |
| CN202991906U (en) * | 2012-12-03 | 2013-06-12 | 高邮市邮元水泵厂 | Rotating body axial fastening structure on rotating shaft |
| CN104564794A (en) * | 2013-10-12 | 2015-04-29 | 史晨 | Locking structure of impeller shaft |
| CN204878251U (en) * | 2015-08-13 | 2015-12-16 | 扬州弘跃机械有限公司 | Mixed flow pump impeller lock nut |
| CN205478566U (en) * | 2016-02-05 | 2016-08-17 | 广州市昕恒泵业制造有限公司 | Pump structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488073A (en) * | 2018-05-18 | 2018-09-04 | 广州市昕恒泵业制造有限公司 | A kind of environment-friendly type serum recycle pump group |
| CN108488073B (en) * | 2018-05-18 | 2023-07-04 | 广州市昕恒泵业制造有限公司 | Environment-friendly slurry circulating pump group |
| CN109404050A (en) * | 2018-12-18 | 2019-03-01 | 南京磁谷科技有限公司 | A kind of structure for reducing Impeller Parts centre bore stress and concentrating |
| WO2020125102A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Structure for reducing stress concentration of central hole of impeller part |
| CN109404050B (en) * | 2018-12-18 | 2024-05-28 | 南京磁谷科技股份有限公司 | Structure for reducing stress concentration of central hole of impeller part |
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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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jing Inventor after: Jiang Jinsong Inventor after: Wang Zebing Inventor after: Tang Jianying Inventor after: Chen Kaixian Inventor after: Luo Xianrong Inventor after: Wei Jiakai Inventor after: Yao Ze Inventor before: Jiang Jinsong Inventor before: Wang Zebing Inventor before: Wang Jing Inventor before: Tang Jianying Inventor before: Chen Kaixian Inventor before: Luo Xianrong Inventor before: Wei Jiakai Inventor before: Yao Ze |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160511 |