CN216447122U - Shaft end supporting and positioning structure of centrifugal pump - Google Patents
Shaft end supporting and positioning structure of centrifugal pump Download PDFInfo
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- CN216447122U CN216447122U CN202123457077.6U CN202123457077U CN216447122U CN 216447122 U CN216447122 U CN 216447122U CN 202123457077 U CN202123457077 U CN 202123457077U CN 216447122 U CN216447122 U CN 216447122U
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- pump
- shaft
- impeller
- motor
- pump cover
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Abstract
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a shaft end supporting and positioning structure of a centrifugal pump, which comprises a motor, a pump cover, a pump shaft, an impeller and a pump body, wherein one side of the pump cover is fixedly connected with the motor, the other side of the pump cover is fixedly connected with the pump body, the impeller is sleeved at one end of the pump shaft and locked on the pump shaft through an impeller nut, the other end of the pump shaft is connected with one end of a motor shaft of the motor, the pump shaft is hermetically connected with the pump cover through a mechanical seal, a supporting seat is arranged between the pump cover and the impeller, and one side of the supporting seat is matched with the pump cover through a seam allowance and is fixed through a bolt. The pump cover is adopted to separate the motor and the pump body, and the supporting seat is designed between the pump cover and the impeller, so that the pump cover has the advantages of small volume, simple structure, stable operation, convenient disassembly, convenient maintenance and low cost, can well protect the motor and the motor bearing, and prolongs the service life.
Description
Technical Field
The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a shaft end supporting and positioning structure of a centrifugal pump.
Background
The existing end suction pump (centrifugal pump) has two basic structures, one is a suspension type, and the other is a direct connection type that a motor shaft and a pump shaft are integrated; the drawbacks of both structures are:
1. the suspension type is large in size, high in cost and inconvenient to maintain;
2. the direct-connected pump body is closely spaced with the motor, and the temperature of the conveyed medium has great influence on the service life of the motor; when the motor shaft of the motor is lengthened, the deflection of the end shaft of the impeller is increased, and the motor bearing is easily damaged.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects and shortcomings in the prior art, the utility model provides the shaft end supporting and positioning structure of the centrifugal pump, which adopts the pump cover to separate the motor from the pump body, and simultaneously designs the supporting seat between the pump cover and the impeller, so that the shaft end supporting and positioning structure of the centrifugal pump has the advantages of small volume, simple structure, stable operation, convenient disassembly, convenient maintenance and low cost, can well protect the motor and the motor bearing, and prolongs the service life.
The technical scheme of the utility model is as follows: the utility model provides a centrifugal pump axle head supports location structure, includes motor, pump cover, pump shaft, impeller and the pump body, pump cover one side and motor fixed connection, the opposite side and the pump body fixed connection of pump cover, the impeller cover is in the one end of pump shaft to lock on the pump shaft through impeller nut, the other end of pump shaft is connected with the motor shaft one end of motor, through mechanical seal sealing connection between pump shaft and the pump cover, be equipped with the supporting seat between pump cover and the impeller, one side and the pump cover of supporting seat pass through the tang cooperation and with bolt fastening.
The pump cover is adopted to separate the motor and the pump body, and the support seat is designed between the pump cover and the impeller, so that the pump cover has the advantages of small volume, simple structure, stable operation, convenient disassembly, convenient maintenance and low cost, can well protect the motor and a motor bearing, and prolongs the service life.
Preferably, a first shaft sleeve for limiting the axial position of the impeller is sleeved on the pump shaft, and the width of the first shaft sleeve is matched with that of the support seat.
The structure ensures that the axial position of the impeller is stable, and meanwhile, the installation of the supporting seat is convenient.
Preferably, a second shaft sleeve matched with the first shaft sleeve is embedded in the supporting seat, and the second shaft sleeve is locked and positioned through a screw and a special-shaped gasket.
This kind of structure makes things convenient for the dismouting of supporting seat, ensures the firm nature of installation of supporting seat simultaneously.
Preferably, the pump shaft is connected with a motor shaft of the motor through a coupling, and the coupling is located inside the pump cover.
The structure ensures that the connection between the pump shaft and the motor shaft of the motor is firm and ensures stable and reliable power transmission.
Preferably, the mechanical seal is located in the middle of the connecting side of the pump cover and the pump body, and the pump shaft penetrates through the mechanical seal.
The structure ensures the sealing effect between the pump cover and the pump shaft by the mechanical seal
Preferably, one end of the pump shaft is provided with a threaded section matched with the impeller nut, the impeller nut is screwed on the threaded section to lock the impeller, and a support gasket is arranged between the impeller nut and the impeller.
This kind of structure ensures the firm nature of installation of impeller.
Preferably, an impeller assembling section matched with the impeller and a supporting seat assembling section matched with the supporting seat are arranged on the pump shaft.
The structure facilitates the installation of the impeller and the supporting seat, and simultaneously ensures the installation firmness of the impeller and the supporting seat.
The pump cover is adopted to separate the motor and the pump body, and the support seat is designed between the pump cover and the impeller, so that the pump cover has the advantages of small volume, simple structure, stable operation, convenient disassembly, convenient maintenance and low cost, can well protect the motor and a motor bearing, and prolongs the service life.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged schematic view at I of FIG. 1;
in the figure, 1 is an electric motor, 2 is a pump cover, 3 is a pump shaft, 4 is a screw, 5 is an opposite-shaped gasket, 6 is a support seat, 7 is an impeller, 8 is a pump body, 9 is an impeller nut, 10 is a first shaft sleeve, 11 is a bolt, 12 is a second shaft sleeve, 13 is a mechanical seal, 14 is a coupling, 15 is a threaded section, 16 is a support gasket, 17 is an impeller assembly section, and 18 is a support seat assembly section.
Detailed Description
The present invention will be described in further detail with reference to the attached drawings, but the present invention is not limited thereto.
As shown in fig. 1 and 2, a centrifugal pump shaft end supporting and positioning structure, including motor 1, pump cover 2, pump shaft 3, impeller 7 and the pump body 8, pump cover 2 one side and motor 1 fixed connection, the opposite side and the pump body 8 fixed connection of pump cover 2, impeller 7 cover is in the one end of pump shaft 3, and lock on pump shaft 3 through impeller nut 9, the other end and the motor shaft one end of motor 1 of pump shaft 3 are connected, through mechanical seal 13 sealing connection between pump shaft 3 and the pump cover 2, be equipped with supporting seat 6 between pump cover 2 and the impeller 7, one side and the pump cover 2 of supporting seat 6 pass through the tang cooperation and are fixed with bolt 11. The pump shaft 3 is sleeved with a first shaft sleeve 10 used for limiting the axial position of the impeller 7, and the width of the first shaft sleeve 10 is matched with that of the supporting seat 6. A second shaft sleeve 12 matched with the first shaft sleeve 10 is embedded in the supporting seat 6, and the second shaft sleeve 12 is locked and positioned through a screw 4 and a special-shaped gasket 5. The pump shaft 3 and the motor shaft of the motor 1 are connected by a coupling 14, and the coupling 14 is located inside the pump cover 2. The mechanical seal 13 is positioned in the middle of the connecting side of the pump cover 2 and the pump body 8, and the pump shaft 3 penetrates through the mechanical seal 13. One end of the pump shaft 3 is provided with a threaded section 15 matched with the impeller nut 9, the impeller nut 9 is screwed on the threaded section 15 to lock the impeller 7, and a support gasket 16 is arranged between the impeller nut 9 and the impeller 7. An impeller assembling section 17 matched with the impeller 7 and a supporting seat assembling section 18 matched with the supporting seat 6 are arranged on the pump shaft 3.
The mechanical seal in the present invention is a conventional mechanical seal commercially available, and therefore, detailed description thereof will be omitted.
The pump cover is adopted to separate the motor and the pump body, and the support seat is designed between the pump cover and the impeller, so that the pump cover has the advantages of small volume, simple structure, stable operation, convenient disassembly, convenient maintenance and low cost, can well protect the motor and a motor bearing, and prolongs the service life.
Claims (7)
1. The utility model provides a centrifugal pump axle head supports location structure which characterized in that: the pump cover comprises a motor, a pump cover, a pump shaft, an impeller and a pump body, wherein one side of the pump cover is fixedly connected with the motor, the other side of the pump cover is fixedly connected with the pump body, the impeller is sleeved at one end of the pump shaft and is locked on the pump shaft through an impeller nut, the other end of the pump shaft is connected with one end of a motor shaft of the motor, the pump shaft is connected with the pump cover through a mechanical seal, a supporting seat is arranged between the pump cover and the impeller, and one side of the supporting seat is matched with the pump cover through a seam allowance and is fixed through bolts.
2. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: the pump shaft is sleeved with a first shaft sleeve used for limiting the axial position of the impeller, and the width of the first shaft sleeve is matched with that of the supporting seat.
3. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: a second shaft sleeve matched with the first shaft sleeve is embedded in the supporting seat, and the second shaft sleeve is locked and positioned through a screw and a special-shaped gasket.
4. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: the pump shaft is connected with a motor shaft of the motor through a coupling, and the coupling is located inside the pump cover.
5. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: the mechanical seal is positioned in the middle of the connecting side of the pump cover and the pump body, and the pump shaft penetrates through the mechanical seal.
6. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: one end of the pump shaft is provided with a threaded section matched with the impeller nut, the impeller nut is screwed on the threaded section to lock the impeller, and a supporting gasket is arranged between the impeller nut and the impeller.
7. A centrifugal pump shaft end supporting and positioning structure as recited in claim 1, wherein: and an impeller assembling section matched with the impeller and a supporting seat assembling section matched with the supporting seat are arranged on the pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123457077.6U CN216447122U (en) | 2021-12-29 | 2021-12-29 | Shaft end supporting and positioning structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123457077.6U CN216447122U (en) | 2021-12-29 | 2021-12-29 | Shaft end supporting and positioning structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216447122U true CN216447122U (en) | 2022-05-06 |
Family
ID=81378316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123457077.6U Active CN216447122U (en) | 2021-12-29 | 2021-12-29 | Shaft end supporting and positioning structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216447122U (en) |
-
2021
- 2021-12-29 CN CN202123457077.6U patent/CN216447122U/en active Active
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