CN202811483U - Connecting structure convenient for installation of multistage pump rotor part - Google Patents
Connecting structure convenient for installation of multistage pump rotor part Download PDFInfo
- Publication number
- CN202811483U CN202811483U CN201220490372.3U CN201220490372U CN202811483U CN 202811483 U CN202811483 U CN 202811483U CN 201220490372 U CN201220490372 U CN 201220490372U CN 202811483 U CN202811483 U CN 202811483U
- Authority
- CN
- China
- Prior art keywords
- pump rotor
- stage pump
- multistage pump
- snap ring
- convenient
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a connecting structure convenient for installation of a multistage pump rotor part. The multistage pump rotor comprises a multistage pump rotor body, and a power shaft which is arranged in a hub hole of the multistage pump rotor. A snap ring is installed between the power shaft and the hub hole, the periphery of the snap ring is formed to be an external cone face, and an inner hole of the hub hole is formed to be an inner cone face which is matched with the external cone face. According to the connecting structure convenient for installation of the multistage pump rotor part, assembly accuracy of the multistage pump rotor is effectively improved, stress concentration is reduced, carrying capacity is high, centering property is good, and dismounting or adjusting the relative positon between the power shaft and the hub hole is convenient. Destroying of the tolerance dimension and the fitting dimension of shafts and other components and parts, caused by different force application operations, can be avoided. Influence to mechanical efficiency and volumetric efficiency of the pump, caused by improper assembly of the multistage pump rotor part, can be reduced. Weakening of the part caused by a key groove or other reasons can be avoided, and sealing effect is achieved well.
Description
Technical field
The utility model relates to the circumferential fixed structure between a kind of axle and parts on shaft, relates in particular to a kind of axle of multistage centrifugal low temperature immersed pump and linkage structure between the hub bore of being applied to.
Background technique
Realize that the circumferentially fixing Placement with transmission motion and torque between axle and parts on shaft mainly contains the modes such as key connecting, interference fit joint, expansion-joints, profile connection.Wherein key connecting can weaken the intensity of axle, and has certain stress to concentrate; Interference fit joint need to have relatively high manufacturing accuracy, needs certain ambient conditions to be assisted when assembling, and assembling difficulty is larger, is difficult for guaranteeing assembly precision; Coupled the extrusion stress that profile connects is higher, and processing is complicated; The centering of expansion-joints is good, and the relative position of installing and removing or adjust axle and wheel hub is convenient, does not have stress to concentrate, and bearing capacity is high, can avoid part because of former thereby weakenings such as keyways, and seal action is arranged again.
The model utility content
The purpose of this utility model is to provide a kind of linkage structure that the multi-stage pump rotor parts are installed of being convenient to, and can improve multi-stage pump rotor component assemble precision, reduces stress and concentrates, and reduce difficulty of processing and easy disassembly.
For reaching above-mentioned purpose, the utility model provides a kind of linkage structure that the multi-stage pump rotor parts are installed of being convenient to, described multi-stage pump rotor comprises: multi-stage pump rotor body and be arranged at line shaft in the hub bore of described multi-stage pump rotor body, wherein, be provided with a snap ring between described line shaft and the hub bore, the periphery of described snap ring is set to male cone (strobilus masculinus), and the endoporus of described hub bore is set to the inner conical surface that matches with described male cone (strobilus masculinus).
The above-mentioned linkage structure of being convenient to the installation of multi-stage pump rotor parts, the miner diameter end of wherein said inner conical surface and male cone (strobilus masculinus) lays respectively at the inlet side of described multi-stage pump rotor.
The above-mentioned linkage structure of being convenient to the installation of multi-stage pump rotor parts, the miner diameter end of wherein said male cone (strobilus masculinus) is provided with outside thread, described snap ring is sheathed on described line shaft and when miner diameter end passes described hub bore position, is rotated with nut by one and screws in described outside thread and described line shaft is fixed in described hub bore.
The above-mentioned linkage structure of being convenient to the installation of multi-stage pump rotor parts, wherein said snap ring is steel part.
Above-mentioned be convenient to the linkage structure that the multi-stage pump rotor parts are installed, wherein said snap ring is 65,65Mn, 55Cr2,60Cr2 or QSi3-1 steel part.
Effect of the present utility model is:
The utility model discloses is convenient to the linkage structure that the multi-stage pump rotor parts are installed, can Effective Raise multi-stage pump rotor component assemble precision, and reduce stress and concentrate, bearing capacity is high, and centering property is good, and mounting or dismounting or the relative position of adjusting axle and wheel hub are conveniently.Can avoid the various application of forces to operate tolerance dimension and the build-up tolerance that destroys the component such as axles for this reason, minimizing affects the mechanical efficiency of pump and volumetric efficiency etc. because the assembling of the rotor part of multistage pump is improper, also can avoid part because of former thereby weakenings such as keyways, play again good seal action.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the uninstalled structural drawing of snap ring that the utility model is convenient to the linkage structure of multi-stage pump rotor parts installation;
Fig. 2 is that the utility model is convenient to the structural drawing that the snap ring of the linkage structure that the multi-stage pump rotor parts install is installed.
Wherein, reference character
1 multi-stage pump rotor body
11 hub bores (inner conical surface)
2 line shafts
3 snap rings
31 snap ring male cone (strobilus masculinus)s
32 snap ring outside threads
4 are rotated with nut
5 installation standard piece
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and working principle are done concrete description:
The linkage structure that the multi-stage pump rotor parts are installed if adopt the key connecting mode, not only can weaken the intensity of axle, concentrates but also can produce certain stress; If adopt the interference fit joint mode, need to have higher requirements to the machining accuracy in axle and hole, when assembling, also need certain ambient conditions assist, assembling difficulty is larger, is difficult for the assurance assembly precision; If the mode that adopts profile to connect, coupled extrusion stress is higher, and processing is complicated.
In the embodiment as depicted in figs. 1 and 2, the utility model discloses a kind of linkage structure that the multi-stage pump rotor parts are installed of being convenient to, and adopts the expansion-joints mode, can improve multi-stage pump rotor component assemble precision, reduce stress and concentrate, and reduce difficulty of processing and easy disassembly.
Further, referring to Fig. 1 and Fig. 2, specific embodiment of the utility model is,
Described multi-stage pump rotor comprises: multi-stage pump rotor body 1 and be arranged at line shaft 2 in the hub bore 11 of described multi-stage pump rotor body 1, the linkage structure that the utility model discloses be for, to a snap ring 3 be set between described line shaft 2 and the hub bore 11, the periphery of described snap ring 3 is set to male cone (strobilus masculinus) 31, and the endoporus of described hub bore 11 is set to the inner conical surface that matches with described male cone (strobilus masculinus).
The utility model utilizes the principle of expansion-joints, by the above-mentioned interior male cone (strobilus masculinus) a pair of bonded to each other between line shaft 2 and hub bore 11, under responsive to axial force, interior ring dwindles, outer shroud swells, realize that axle and wheel hub fit tightly, and produce enough frictional force, with transmitting torque, axial force or both combined loads.
The miner diameter end of described inner conical surface 11 and male cone (strobilus masculinus) 31 lays respectively at the inlet side of described multi-stage pump rotor, that is, described inner conical surface 11 and male cone (strobilus masculinus) 31 be direction shown in A among Fig. 1 by large end to the small end setting.
Its large end of the inner conical surface of described hub bore 11 cooperates with the large end of snap ring 3.In order to be easy for installation and removal, small end at the male cone (strobilus masculinus) 31 of snap ring 3 is provided with outside thread 32, described snap ring 3 is sheathed on described line shaft 2 and when miner diameter end passes described hub bore 11, is rotated with nut 4 by one and screws in described outside thread 32 and described line shaft 2 is fixed in described hub bore 11.
Specifically, external force produces by the inlet side of described multi-stage pump rotor 1 axial force to the outlet side direction by being rotated with nut 4, because the snap ring 3 that makes that the guiding of screw thread can be convenient and strength-saving is realized axial displacement towards the pump rotor inlet side, thereby the relative position of male cone (strobilus masculinus) in changing, make snap ring 3 produce certain resiliently deformable, in regime of elastic deformation, realize the tight cooperation of hub bore and axle.Otherwise, when unclamping when screwing nut, can mutually throw off under the resilient force of described multi-stage pump rotor 1 and snap ring 3, realize the loose state of hub bore and axle, for this reason, for convenience detach.
The operating procedure that the utility model discloses is convenient to the linkage structure that the multi-stage pump rotor parts install is,
The utility model is installed can choice criteria length bar or calibrated bolck with standard piece 5.
The steel parts such as the snap ring that the utility model discloses, its material can select 65,65Mn, 55Cr2,60Cr2 or QSi3-1 are not done concrete restriction.
The utility model discloses is convenient to the linkage structure that the multi-stage pump rotor parts are installed, can Effective Raise multi-stage pump rotor component assemble precision, and reduce stress and concentrate, bearing capacity is high, and centering property is good, and mounting or dismounting or the relative position of adjusting axle and wheel hub are conveniently.Can avoid the various application of forces to operate tolerance dimension and the build-up tolerance that destroys the component such as axles for this reason, minimizing affects the mechanical efficiency of pump and volumetric efficiency etc. because the assembling of the rotor part of multistage pump is improper, also can avoid part because of former thereby weakenings such as keyways, play again good seal action.
Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (5)
1. be convenient to the linkage structure that the multi-stage pump rotor parts are installed for one kind, described multi-stage pump rotor comprises: multi-stage pump rotor body and be arranged at line shaft in the hub bore of described multi-stage pump rotor body, it is characterized in that, be provided with a snap ring between described line shaft and the hub bore, the periphery of described snap ring is set to male cone (strobilus masculinus), and the endoporus of described hub bore is set to the inner conical surface that matches with described male cone (strobilus masculinus).
2. the linkage structure of being convenient to the installation of multi-stage pump rotor parts according to claim 1 is characterized in that the miner diameter end of described inner conical surface and male cone (strobilus masculinus) lays respectively at the inlet side of described multi-stage pump rotor.
3. according to claim 2ly be convenient to the linkage structure that the multi-stage pump rotor parts are installed, it is characterized in that, the miner diameter end of described male cone (strobilus masculinus) is provided with outside thread, described snap ring is sheathed on described line shaft and when miner diameter end passes described hub bore position, is rotated with nut by one and screws in described outside thread and described line shaft is fixed in described hub bore.
4. the linkage structure of being convenient to the installation of multi-stage pump rotor parts according to claim 3 is characterized in that described snap ring is steel part.
5. according to claim 4ly be convenient to the linkage structure that the multi-stage pump rotor parts are installed, it is characterized in that, described snap ring is 65,65Mn, 55Cr2,60Cr2 or QSi3-1 steel part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490372.3U CN202811483U (en) | 2012-09-24 | 2012-09-24 | Connecting structure convenient for installation of multistage pump rotor part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220490372.3U CN202811483U (en) | 2012-09-24 | 2012-09-24 | Connecting structure convenient for installation of multistage pump rotor part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811483U true CN202811483U (en) | 2013-03-20 |
Family
ID=47870366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220490372.3U Expired - Lifetime CN202811483U (en) | 2012-09-24 | 2012-09-24 | Connecting structure convenient for installation of multistage pump rotor part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811483U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322270A (en) * | 2020-03-03 | 2020-06-23 | 巨龙电机(宁德)有限公司 | Water pump impeller transmission shaft connecting structure |
| CN112352104A (en) * | 2018-06-29 | 2021-02-09 | 格兰富控股联合股份公司 | Pump and method of operating the same |
-
2012
- 2012-09-24 CN CN201220490372.3U patent/CN202811483U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112352104A (en) * | 2018-06-29 | 2021-02-09 | 格兰富控股联合股份公司 | Pump and method of operating the same |
| US11719258B2 (en) | 2018-06-29 | 2023-08-08 | Grundfos Holding A/S | Pump |
| CN111322270A (en) * | 2020-03-03 | 2020-06-23 | 巨龙电机(宁德)有限公司 | Water pump impeller transmission shaft connecting structure |
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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: 20130320 |