CN203570697U - Novel impeller nut and shaft connecting structure used for pump - Google Patents
Novel impeller nut and shaft connecting structure used for pump Download PDFInfo
- Publication number
- CN203570697U CN203570697U CN201320532076.XU CN201320532076U CN203570697U CN 203570697 U CN203570697 U CN 203570697U CN 201320532076 U CN201320532076 U CN 201320532076U CN 203570697 U CN203570697 U CN 203570697U
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- China
- Prior art keywords
- shaft
- impeller
- pump
- axle
- impeller nut
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- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a novel impeller nut and shaft connecting structure used for a pump, and provides a structure assembly used in a cantilever-type centrifugal pump or a vertical pipeline pump and comprising a shaft and an impeller. The structure further comprises an impeller nut and a double-end stud. The end, connected with an impeller, of the shaft is hollow, the inner surface of the shaft is provided with threads, one end of the double-end stud is fixed inside the shaft through threads and the other end of the double-end stud is fixed with the impeller nut through threads. According to the novel impeller nut and shaft connecting structure used for the pump, the double-end stud is used for replacing shaft end external threads, so that the length of blank of the shaft is shortened and the labor hours for processing the shaft end external threads are saved; due to the fact that a tool withdrawal groove which can cause stress concentration does not exist, the risk that the shaft is broken apart is avoided.
Description
Technical field
The utility model relates to centrifugal pump, is specially a kind of new structure for cantilever centrifugal pump or vertical pipeline mounted pump.
Background technique
Existing cantilever centrifugal pump and vertical pipeline mounted pump, market application is very extensive.But there is certain problem in its structure: the connection of its impeller nut and pump is to adopt at one section of outside thread of axle head car, then impeller nut is screwed in to the structure on this section of outside thread.There is the problem of two aspects in this structure: 1, the blank length of axle increases, and turnery amount increases; 2,, at the Gewindefreistiche place of axle head, there is the danger of fracture.
Model utility content
The new structure that provides a kind of impeller nut for pump to connect with axle is provided the technical problem that the utility model solves, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
The new structure that a kind of impeller nut for pump connects with axle, it is a kind of structural assembly that comprises axle and impeller being arranged in pump, be arranged on one end that axle connects impeller, also comprise impeller nut, stud, the one end that connects impeller at described axle is hollow, internal surface is provided with screw thread, and one end of described stud is fixed in axle by screw thread, and the other end is fixed by screw thread and impeller nut.
Described stud is standard dual head double-screw bolt, and two ends are measure-alike, by adopting at the axle head that impeller is installed, bores and attacks a tapped hole, the structure that impeller nut connects with standard dual head double-screw bolt by this tapped hole with axle.
Beneficial effect: the new structure that the related impeller nut for cantilever centrifugal pump or vertical pipeline mounted pump of the utility model connects with axle, be to adopt impeller nut to connect with standard dual head double-screw bolt with axle, in order to replace the impeller nut extensively adopting now, be directly screwed in the structure on external thread of shaft end.New structure has advantages of and shortens axis blank length, reduces turning amount of finish, and can avoid external thread of shaft end stress the reason such as to concentrate in the danger of tool withdrawal groove place fracture.Specific as follows:
1. the utility model adopts impeller nut to connect with standard dual head double-screw bolt with axle, in order to replace the impeller nut extensively adopting now, is directly screwed in the structure on external thread of shaft end.Can shorten so the bad length of axle hair, reduce the turning amount of finish of axle, be conducive to saving steel consumption.
2. described in, impeller nut adopts standard dual head double-screw bolt to connect with axle, and because stud is the product that standard batch is produced, material and quality of processing are easily guaranteed, and makes impeller nut reliable with connecting more accurately of axle.Owing to not existing stress to concentrate, there will not be the external thread of shaft end of present existence in the danger of tool withdrawal groove place fracture.
3. when carrying Korrosionsmedium, due to stud not with medium contact, thereby can adopt carbon steel material, cost.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the utility model preferred embodiment.
Fig. 2 is the internal structure schematic diagram of existing cantilever centrifugal pump.
In figure: impeller 1, impeller nut 2, stud 3, axle 4.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The new structure connecting with axle referring to a kind of impeller nut for pump of Fig. 1, it is a kind of structural assembly that comprises axle 4 and impeller 1 being arranged in pump, be arranged on one end that axle 4 connects impeller 1, also comprise impeller nut 2, stud 3, the one end that connects impeller 1 at described axle 4 is hollow, internal surface is provided with screw thread, and one end of described stud 3 is fixed in axle 4 by screw thread, and the other end is fixing by screw thread and impeller nut 2.
In Fig. 2, be existing cantilever centrifugal pump, one end car of its axle 4 has one section of outside thread, and impeller nut is directly screwed on this section of outside thread.
The utility model adopts stud to replace external thread of shaft end, makes the blank shorten length of axle, has saved processing axle head externally threaded man-hour; Owing to not there is not the tool withdrawal groove that causes stress concentrated, there is not the danger of fracture in axle.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. the new structure that the impeller nut for pump connects with axle, it is characterized in that, it is a kind of structural assembly that comprises axle and impeller being arranged in pump, be arranged on one end that axle connects impeller, also comprise impeller nut, stud, the one end that connects impeller at described axle is hollow, and internal surface is provided with screw thread, one end of described stud is fixed in axle by screw thread, and the other end is fixed by screw thread and impeller nut.
2. a kind of impeller nut for pump according to claim 1 and the new structure that axle connects, is characterized in that, described stud is standard dual head double-screw bolt, and two ends are measure-alike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532076.XU CN203570697U (en) | 2013-08-29 | 2013-08-29 | Novel impeller nut and shaft connecting structure used for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532076.XU CN203570697U (en) | 2013-08-29 | 2013-08-29 | Novel impeller nut and shaft connecting structure used for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570697U true CN203570697U (en) | 2014-04-30 |
Family
ID=50538430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532076.XU Expired - Lifetime CN203570697U (en) | 2013-08-29 | 2013-08-29 | Novel impeller nut and shaft connecting structure used for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570697U (en) |
-
2013
- 2013-08-29 CN CN201320532076.XU patent/CN203570697U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |