CN221074763U - Rotary jet pump easy to disassemble and assemble - Google Patents
Rotary jet pump easy to disassemble and assemble Download PDFInfo
- Publication number
- CN221074763U CN221074763U CN202323206157.3U CN202323206157U CN221074763U CN 221074763 U CN221074763 U CN 221074763U CN 202323206157 U CN202323206157 U CN 202323206157U CN 221074763 U CN221074763 U CN 221074763U
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- Prior art keywords
- pump
- hub
- rotary
- bearing
- bolt
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- 210000004907 gland Anatomy 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 21
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a rotary jet pump easy to assemble and disassemble, and belongs to the technical field of non-positive-displacement pumps. The novel centrifugal pump comprises a pump shell, wherein a bearing box is arranged on one side of the pump shell, a pump cover is detachably connected to the other side of the pump shell, a rotating hub, an impeller and a liquid collecting pipe are arranged in the pump shell, two ends of a main shaft are respectively arranged in the bearing box through a front bearing and a rear bearing, one end of the rotating hub is connected with the impeller, the rotating hub and the impeller form a rotating cavity, a cantilever end of the liquid collecting pipe is arranged in the rotating cavity, one or more bolt holes are formed in the other end of the rotating hub, the bolt holes penetrate through the inner side wall and the outer side wall of the rotating hub, one or more internal threaded holes are formed in a shaft head of the main shaft, and the bolt holes are connected with the internal threaded holes through fastening bolts. The utility model can reduce the complexity of the replacement and disassembly of the rotating hub by changing the fixed form of the rotating hub, thereby improving the maintenance efficiency of the pump and reducing the maintenance cost and the labor intensity of staff.
Description
Technical Field
The utility model relates to a rotary jet pump easy to assemble and disassemble, and belongs to the technical field of non-positive-displacement pumps.
Background
The rotary jet pump is a low-flow high-lift low-specific-speed centrifugal pump, can be used for randomly adjusting flow, has stable working performance in a full range on a lift curve, and can replace partial high-speed pumps and multistage pumps in many industrial applications.
As shown in fig. 1, a typical rotary jet pump includes a pump housing 20, a bearing housing 21 is at the right end of the pump housing 20, a pump cover 5 is detachably connected to the left end of the pump housing 20, the left side of the pump cover 5 is detachably connected to a connector, the left side of the connector is detachably connected to a water inlet/outlet body 1, a liquid inlet is provided on the pump cover 5, a suction end sealing structure 4 is further provided at the liquid inlet, a rotating hub 15, an impeller 6 and a liquid collecting tube 2 are provided in the pump housing 20, two ends of a main shaft 16 are respectively mounted in the bearing housing 21 through a front bearing 8 and a rear bearing 12, the front bearing 8 is fixed in the bearing housing 21 through a front gland 7, the rear bearing 12 is fixed in the bearing housing 21 through a rear gland 14, the main shaft 16 is fixedly connected to the outer side of the rotating hub 15 through bolts, a front oil slinger, a front fixing nut 10 for fixing the front oil slinger, a rear oil slinger and a rear fixing 13 are further provided on the main shaft 16, the rotating hub 15 is connected to the impeller 6, the rotating hub 15 and the impeller 6 form a rotating cavity, the cantilever end of the liquid collecting tube 2 is provided in the rotating cavity, and the cantilever end of the liquid collecting tube 2 is extended to the liquid outlet end of the connector.
Because the liquid collecting pipe 2 is a static part in the rotating cavity, the liquid outlet end of the liquid collecting pipe 2 is connected with the connector, and the liquid collecting pipe 2 only has one supporting point of the liquid outlet end, so that the liquid collecting pipe 2 is in a cantilever structure, when the liquid collecting pipe 2 is subjected to the radial force of high-speed fluid, the cantilever end will droop, and the phenomenon can lead to the eccentric wear of the rotating hub 15 rotating at high speed and the liquid collecting pipe 2 at the throat, so that the pump set efficiency is affected. When the eccentric wear occurs, the rotary hub 15 needs to be detached in time for maintenance or replacement, however, as shown in fig. 2, the main shaft 16 of the existing rotary jet pump extends into the pump housing 20 through the shaft hole on the right side of the pump housing 20 and is fixedly connected with the rotary hub 15 through bolts, the bolts connect the shaft head 1601 of the main shaft 16 with the rotary hub 15 from the outer side of the rotary hub 15, that is, the bolt heads 1601 are provided with bolt holes, the outer end surface of the rotary hub 15 is provided with internal threaded holes, and the rotary hub 15 is connected with the shaft heads 1601 through the fastening bolts 19, so that the main shaft 16 can be completely separated from the conveying liquid, but in this connection mode, when the rotary hub 15 is detached, the parts such as the water inlet/outlet body 1, the connector 3, the suction end sealing structure 4, the pump cover 5, the impeller 6, the front gland 7, the front bearing 8, the front oil slinger 9, the front fixing nut 10, the rear oil slinger 11, the rear bearing 12, the rear fixing nut 13, the rear gland 14 and the like on the left side need to be detached in sequence, so that the rotary jet pump 15 can be detached completely, and the existing rotary jet pump is detached, and the maintenance and repair is complicated, and the maintenance time is long.
Disclosure of utility model
The present utility model aims to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
The technical scheme provided by the utility model is as follows: the utility model provides a rotatory jet pump of easy dismouting, includes the pump case, and one side of pump case is the bearing box, and the opposite side detachable of pump case is connected with the pump cover, is equipped with in the pump case and changes hub, impeller and collector tube, and the both ends of main shaft are installed in the bearing box through front bearing and rear bearing respectively, the one end and the impeller of changeing the hub are connected, it changes the chamber to change hub and impeller constitution, the cantilever end setting of collector tube is in change the chamber, the other end of changeing the hub through fastening bolt with the spindle nose connection of main shaft, just fastening bolt follows change the inboard of chamber and tear open/adorn.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, one or more bolt holes are formed in the end, connected with the main shaft, of the rotating hub, the bolt holes penetrate through the inner side wall and the outer side wall of the rotating hub, one or more internal threaded holes are formed in the shaft head of the main shaft, and fastening bolts penetrate through the bolt holes from the inner side of the rotating cavity and are in threaded connection with the internal threaded holes.
Further, a positioning spigot is further formed on the outer side wall of one end of the rotating hub, provided with the bolt hole, the shaft head is inserted into the positioning spigot, and a sealing ring/pad is arranged between the end face of the shaft head and the end face of the positioning spigot.
The beneficial effect of adopting above-mentioned further scheme is, prevents that liquid from revealing.
Further, the novel hydraulic support further comprises a disc spring, wherein the disc spring is arranged between the end face of the shaft head and the end face of the positioning spigot.
The adoption of the further scheme has the beneficial effects that the belleville springs are clamped and fixed with the rotating hub through the shaft heads, and the belleville springs can prevent bolts from loosening caused by vibration generated by the bolts in the high-speed operation of the pump.
Further, an adjusting hole is further formed in the rotating hub, an adjusting threaded rod is arranged in the adjusting hole, and the adjusting threaded rod is matched with the disc spring to control pretightening force of the disc spring.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: the utility model can reduce the complexity of the replacement and disassembly of the rotating hub by changing the fixed form of the rotating hub, thereby improving the maintenance efficiency of the pump and reducing the maintenance cost and the labor intensity of staff.
Further, the front bearing is fixed in the bearing box through the front gland, the front gland is fixed on the pump shell through a gland bolt, and the gland bolt is detached/installed from the inside of the pump shell.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a conventional rotary jet pump hub mounting structure;
fig. 2 is an enlarged view at a in fig. 1;
FIG. 3 is a schematic view of the mounting structure of the rotary jet pump hub of the present utility model;
FIG. 4 is an enlarged view of the utility model at B in FIG. 3;
In the figure, 1, a water outlet body; 2. a liquid collecting pipe; 3. a connecting body; 4. a suction end sealing structure; 5. a pump cover; 6. an impeller; 7. a front gland; 8. a front bearing; 9. a front oil slinger; 10. a front fixing nut; 11. a rear oil slinger; 12. a rear bearing; 13. a rear fixing nut; 14. a rear gland; 15. a rotating hub; 16. a main shaft; 1601. a shaft head; 17. a belleville spring; 18. sealing rings/gaskets; 19. a fastening bolt; 20. a pump housing; 21. a bearing housing; 22. adjusting a threaded rod; 23. and (5) pressing the bolts.
Detailed Description
The principles and features of the present utility model are described below in connection with examples, which are set forth only to illustrate the present utility model and not to limit the scope of the utility model.
As shown in fig. 2 and 3, an easy-to-disassemble rotary jet pump comprises a pump shell 20, the right end of the pump shell 20 is a bearing box 21, the left end of the pump shell 20 is detachably connected with a pump cover 5, a rotary hub 15, an impeller 6 and a liquid collecting pipe 2 are arranged in the pump shell 20, two ends of a main shaft 16 are respectively arranged in the bearing box 21 through a front bearing 8 and a rear bearing 12, the left end of the rotary hub 15 is connected with the impeller 6, the rotary hub 15 and the impeller 6 form a rotary cavity, the cantilever end of the liquid collecting pipe 2 is arranged in the rotary cavity, a plurality of bolt holes are formed in the right end of the rotary hub 15 and uniformly distributed around the central axis of the rotary hub 15, the bolt holes penetrate through the inner side wall and the outer side wall of the rotary hub 15, a plurality of internal threaded holes are formed in a shaft head 1601 of the main shaft 16 and uniformly distributed around the axis of the main shaft 16, the number of the internal threaded holes is matched with the number of the bolt holes, a fastening bolt 19 is inserted into the bolt holes from the inner side of the rotary cavity and is connected with the internal threaded holes, and the fastening bolt 19 is dismounted from the inner side of the rotary cavity.
The outer side wall of the right end of the rotating hub 15 is also provided with a positioning spigot, the shaft head 1601 is inserted into the positioning spigot, and a sealing ring/gasket 18 is arranged between the end face of the shaft head 1601 and the end face of the positioning spigot.
The rotary jet pump easy to disassemble and assemble further comprises a disc spring 17, and the disc spring 17 is arranged between the end face of the shaft head 1601 and the end face of the positioning spigot. The belleville springs 17 are clamped and fixed with the rotary hub 15 through the shaft heads 1601, and the belleville springs 17 can prevent bolts from loosening due to vibration generated by the bolts in high-speed operation of the pump.
The rotary hub 15 is further provided with an adjusting hole, an adjusting threaded rod 22 is arranged in the adjusting hole, and the adjusting threaded rod 22 is matched with the belleville springs 17 to control pretightening force of the belleville springs 17.
The rotary jet pump further includes a front gland 7, the front bearing 8 is fixed in the bearing housing 21 by the front gland 7, the front gland 7 is fixed on the pump casing 20 by a gland bolt 23, and the gland bolt 23 is detached/attached from the inside of the pump casing 20.
The utility model can reduce the complexity of replacing and disassembling the rotating hub 15 by changing the fixed form of the rotating hub 15, thereby improving the maintenance efficiency of the pump and reducing the maintenance cost and the labor intensity of staff.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. The utility model provides a rotatory jet pump of easy dismouting, its characterized in that, including pump case (20), one side of pump case (20) is bearing box (21), and the opposite side detachable of pump case (20) is connected with pump cover (5), is equipped with in pump case (20) and changes hub (15), impeller (6) and collector tube (2), and install respectively through front bearing (8) and rear bearing (12) in the both ends of main shaft (16) in bearing box (21), the one end of hub (15) is connected with impeller (6), change hub (15) and impeller (6) constitution and change the chamber, the cantilever end setting of collector tube (2) is in change the chamber, the other end of hub (15) pass through fastening bolt (19) with spindle nose (1601) of main shaft (16) are connected, just fastening bolt (19) follow change the inboard of chamber and tear down/install.
2. The rotary jet pump easy to disassemble and assemble according to claim 1, characterized in that one end of the rotary hub (15) connected with the main shaft (16) is provided with one or more bolt holes, the bolt holes penetrate through the inner side wall and the outer side wall of the rotary hub (15), the shaft head (1601) of the main shaft (16) is provided with one or more internal threaded holes, and the fastening bolts (19) are inserted into the bolt holes from the inner side of the rotary cavity and are in threaded connection with the internal threaded holes.
3. The rotary jet pump easy to disassemble and assemble as claimed in claim 1 or 2, characterized in that a positioning spigot is further formed on the outer side wall of one end of the rotary hub (15) where the bolt hole is formed, the shaft head (1601) is inserted into the positioning spigot, and a sealing ring/pad (18) is arranged between the end face of the shaft head (1601) and the end face of the positioning spigot.
4. A rotary jetting pump according to claim 3, characterized in that it further comprises a belleville spring (17), the belleville spring (17) being disposed between the end face of the stub shaft (1601) and the end face of the locating spigot.
5. The rotary jet pump easy to disassemble and assemble as claimed in claim 4, wherein the rotary hub (15) is further provided with an adjusting hole, an adjusting threaded rod (22) is installed in the adjusting hole, and the adjusting threaded rod (22) is matched with the belleville spring (17) to control the pretightening force of the belleville spring (17).
6. The rotary jetting pump easy to disassemble and assemble as claimed in claim 1, further comprising a front gland (7), the front bearing (8) is fixed in the bearing housing (21) by the front gland (7), the front gland (7) is fixed on a pump casing (20) by a gland bolt (23), and the gland bolt (23) is disassembled/assembled from the inside of the pump casing (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323206157.3U CN221074763U (en) | 2023-11-27 | 2023-11-27 | Rotary jet pump easy to disassemble and assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323206157.3U CN221074763U (en) | 2023-11-27 | 2023-11-27 | Rotary jet pump easy to disassemble and assemble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221074763U true CN221074763U (en) | 2024-06-04 |
Family
ID=91261651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323206157.3U Active CN221074763U (en) | 2023-11-27 | 2023-11-27 | Rotary jet pump easy to disassemble and assemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221074763U (en) |
-
2023
- 2023-11-27 CN CN202323206157.3U patent/CN221074763U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |