CN220168212U - Shaft sleeve locking device for preventing water from entering water pump shaft sleeve - Google Patents
Shaft sleeve locking device for preventing water from entering water pump shaft sleeve Download PDFInfo
- Publication number
- CN220168212U CN220168212U CN202321179002.2U CN202321179002U CN220168212U CN 220168212 U CN220168212 U CN 220168212U CN 202321179002 U CN202321179002 U CN 202321179002U CN 220168212 U CN220168212 U CN 220168212U
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- CN
- China
- Prior art keywords
- shaft
- shaft sleeve
- bearing
- locking device
- sleeve
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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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000004323 axial length Effects 0.000 claims description 6
- 210000002268 wool Anatomy 0.000 claims description 4
- 238000012856 packing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump, which relates to the technical field of shaft sleeve sealing of the water pump and comprises a first locking nut connected to a non-shaft extension end shaft section of a pump shaft and a stop piece arranged on the shaft extension end shaft section and used for axially locking a second bearing, wherein a screw tooth is arranged on the shaft extension end shaft section, the stop piece is a second locking nut connected to the shaft extension end shaft section in a threaded manner, an extension section is arranged on an outer end cover of a bearing seat of the second bearing along the axial direction, an oil seal mounting groove is formed in the extension section, and a multi-lip framework oil seal is arranged in the oil seal mounting groove. The utility model solves the problem that the existing shaft sleeve for the pump is easy to loosen and enter water.
Description
Technical Field
The utility model relates to the technical field of water pump shaft sleeve sealing, in particular to a shaft sleeve locking device for preventing water from entering a water pump shaft sleeve.
Background
The existing large-flow middle-open double-suction centrifugal pump shown in fig. 1 is designed to protect a pump shaft from corrosion and packing abrasion, and adopts a shaft sleeve full-packing pump shaft design, wherein a shaft sleeve 4 which is connected end to end is respectively designed from an impeller 5 to a packing position, from the packing position to the outside of the pump and from the outside of the pump to the inside of a bearing seat for protecting the pump shaft, sealing rings on the end surfaces are arranged between the shaft sleeves 4, and the whole shaft and the impeller 4 are respectively fixed and locked through a retainer ring 2 of a shaft extension end shaft section 1 and a bearing locking nut of a non-shaft extension end shaft section 6; the check ring 2 is thinner than the single check ring, the check ring mounting groove is wider, the check ring 2 is loosened due to axial vibration after the water pump works for a long time, water in the pump enters the shaft sleeve 4 from a gap of the joint surface of the shaft sleeve 4 and the impeller 5, and accordingly the water flows into the bearing seat through the whole shaft sleeve 4, water inlet phenomenon is caused to the bearing seat frequently, and the service life of the bearing is influenced.
Disclosure of Invention
The utility model aims to provide a shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump, which can solve the problem that the existing shaft sleeve for the pump is easy to loosen and enter water.
In order to solve the problems, the utility model adopts the following technical scheme: the shaft sleeve locking device for preventing water from entering the shaft sleeve of the water pump comprises a first locking nut connected to a non-shaft-extending end shaft section of the pump shaft and a stopping piece arranged on the shaft-extending end shaft section and used for axially locking a second bearing, threads are arranged on the shaft-extending end shaft section, the stopping piece is in threaded connection with the second locking nut on the shaft-extending end shaft section, an outer end cover of a bearing seat of the second bearing is provided with an extending section along the axial direction, an oil seal mounting groove is formed in the extending section, and a multi-lip framework oil seal is arranged in the oil seal mounting groove.
Among the above-mentioned axle sleeve locking device that prevents water pump axle sleeve from intaking, more specific technical scheme can also be: the axial length of the second lock nut is greater than the axial length of the second bearing.
Further, a wool felt sealing gasket is arranged between the outer end cover of the bearing seat and the second bearing.
Further, a sealing ring is arranged between the shaft sleeve and the shaft sleeve mounting shaft section.
Furthermore, sealing rings are arranged at the positions, close to the two ends, of the shaft sleeve.
Further, a U-shaped groove for placing the sealing ring is formed in the inner wall of the shaft sleeve.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
1. a screw thread is arranged on the shaft extension end shaft section of the pump shaft, a second locking nut is connected onto the shaft extension end shaft section in a threaded manner to press a second bearing, and the second bearing is matched with a first locking nut to form a bidirectional nut locking, so that the shaft sleeve can be prevented from being fed into the bearing seat due to looseness; the outer end cover of the bearing seat is transformed, so that the multi-lip framework oil seal can be installed in the outer end cover of the bearing seat, and the looseness of the shaft sleeve is thoroughly solved.
2. The second lock nut is an extension nut with the axial length larger than that of the second bearing, so that the fastening force and the friction force of connection can be improved, the second lock nut is not easy to slide, and the locking reliability is improved.
3. And a wool felt sealing gasket is further arranged between the outer end cover of the bearing seat and the second bearing, so that the sealing effect can be improved.
4. Sealing rings are arranged between the two ends of the shaft sleeve and the shaft sleeve mounting shaft section, so that even if water enters the shaft sleeve, the water cannot flow into the bearing seat.
Drawings
Fig. 1 is a schematic structural view of a conventional locking device for a water pump shaft sleeve.
Fig. 2 is a schematic structural view of the sleeve locking device for preventing water from entering the water pump sleeve.
Fig. 3 is a schematic view of the internal structure of the housing outer end cap.
Reference numerals illustrate: 1. a shaft extension end shaft section; 2. a retainer ring; 3. a second bearing; 4. a shaft sleeve; 5. an impeller; 6. a non-shaft extension end shaft section; 7. a first bearing; 8. a first lock nut; 9. screw threads; 10. a second lock nut; 11. an O-shaped sealing ring; 12. an outer end cover of the bearing seat; 12-1, an extension section; 12-2, an oil seal mounting groove.
Detailed Description
The utility model is further described in detail below with reference to the examples of the drawings:
the shaft sleeve locking device for preventing water from entering the shaft sleeve of the water pump shown in fig. 2 mainly comprises a first locking nut 8 connected to a non-shaft extending end shaft section 6 of the pump shaft and used for axially locking a first bearing 7, and a stop piece arranged on the shaft extending end shaft section 1 and used for axially locking a second bearing 3, wherein the stop piece is a second locking nut 10, the axial length of the second locking nut 10 is larger than that of the second bearing 3, a screw tooth 9 for installing the second locking nut is processed on the shaft extending end shaft section 1 of the original installation retainer ring, the second locking nut 10 is in threaded connection with the shaft extending end shaft section 1, and the second locking nut 10 of the embodiment is an lengthened nut which is basically equal in length with the shaft extending end shaft section 1 for installing the second locking nut. The bearing is locked by opposite locking of the first locking nut 8 and the second locking nut 10, so that the shaft sleeve 4 and the impeller 5 are reliably locked on the pump shaft, and the shaft sleeve 4 cannot be loosened. An O-shaped sealing ring 11 is arranged between the shaft sleeve 4 and the shaft sleeve mounting shaft section, and U-shaped grooves for placing the O-shaped sealing rings 11 are respectively processed on the inner walls of the two end parts of each shaft sleeve 4 for processing and improving the sealing reliability.
As shown in fig. 3, the shaft extension end of the pump shaft is a load end, in order to improve the sealing reliability of the bearing seat at the shaft extension end, the outer end cover 12 of the bearing seat of the second bearing 3 mounted at the shaft extension end is provided with an extension section 12-1 extending along the axial direction, an oil seal mounting groove 12-2 is formed in the extension section 12-1, and a multi-lip framework oil seal is mounted in the oil seal mounting groove 12-2. A wool felt sealing gasket is also installed between the bearing seat outer end cover 12 and the second bearing 3 to improve the sealing performance between the bearing seat outer end cover and the pump shaft.
This prevent axle sleeve locking device of water pump axle sleeve intaking is to leading to from the inside problem of intaking of axle sleeve 4 because the axle sleeve is not hard up, cancels retaining ring 2, changes by the lock nut of extension at axle extension end shaft section 1 and fixes, reforms transform bearing frame outer end cover 12 simultaneously, increases the skeleton oil blanket, solves the unsuitable problem of former sealing member because of increasing lock nut leads to thoroughly solving the axle sleeve and becoming flexible.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present utility model should not be construed as being limited to the specific forms set forth in the embodiments, but the scope of protection of the present utility model also includes equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (6)
1. The utility model provides a prevent axle sleeve locking device of water pump axle sleeve intaking, includes the first lock nut of connecting on the non-axle of pump axle stretches end shaft section to and install the stopper that is used for axial locking second bearing on axle stretches end shaft section, its characterized in that: the bearing seat outer end cover of the second bearing is provided with an extending section along the axial direction, an oil seal mounting groove is formed in the extending section, and a multi-lip framework oil seal is mounted in the oil seal mounting groove.
2. The shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump according to claim 1, wherein: the axial length of the second lock nut is greater than the axial length of the second bearing.
3. The shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump according to claim 2, wherein: and a wool felt sealing gasket is arranged between the outer end cover of the bearing seat and the second bearing.
4. A sleeve locking device for preventing water from entering a sleeve of a water pump according to any one of claims 1 to 3, wherein: a sealing ring is arranged between the shaft sleeve and the shaft sleeve mounting shaft section.
5. The shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump as claimed in claim 4, wherein: sealing rings are arranged at the positions, close to the two ends, of the shaft sleeve.
6. The shaft sleeve locking device for preventing water from entering a shaft sleeve of a water pump as claimed in claim 5, wherein: the inner wall of the shaft sleeve is provided with a U-shaped groove for placing the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179002.2U CN220168212U (en) | 2023-05-16 | 2023-05-16 | Shaft sleeve locking device for preventing water from entering water pump shaft sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321179002.2U CN220168212U (en) | 2023-05-16 | 2023-05-16 | Shaft sleeve locking device for preventing water from entering water pump shaft sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168212U true CN220168212U (en) | 2023-12-12 |
Family
ID=89054919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321179002.2U Active CN220168212U (en) | 2023-05-16 | 2023-05-16 | Shaft sleeve locking device for preventing water from entering water pump shaft sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168212U (en) |
-
2023
- 2023-05-16 CN CN202321179002.2U patent/CN220168212U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |