CN211648570U - Oil leakage prevention anti-reversion device - Google Patents
Oil leakage prevention anti-reversion device Download PDFInfo
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- CN211648570U CN211648570U CN201922405623.8U CN201922405623U CN211648570U CN 211648570 U CN211648570 U CN 211648570U CN 201922405623 U CN201922405623 U CN 201922405623U CN 211648570 U CN211648570 U CN 211648570U
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Abstract
An anti-reverse device for preventing oil leakage comprises a sleeve, a bearing seat, an O-shaped sealing ring, a rolling bearing, a double-round nut, an outer bearing spacer ring, an inner bearing spacer ring, an anti-reverse rotating disc, an anti-reverse end cover, an adjusting nut and a cylindrical pin, wherein the sleeve, the bearing seat, the O-shaped sealing ring, the rolling bearing, the double-round nut, the outer bearing spacer ring, the inner bearing spacer ring, the; the lower end of the sleeve is provided with a flange structure, the flange structure is connected with the lower end face of the bearing seat, and an O-shaped sealing ring is arranged between the flange structure and the lower end face of the bearing seat; the outer wall of the lower part of the sleeve is provided with an annular step, the outer wall of the upper end of the sleeve is provided with external threads, the lower end face of the rolling bearing is abutted against the annular step, and the upper end face of the rolling bearing is tightly pressed by the double-round nut; an outer bearing spacer ring is arranged between the outer rings of the adjacent rolling bearings, and an inner bearing spacer ring is arranged between the inner rings of the bearings. The sleeve is matched with the O-shaped sealing ring to realize zero leakage of lubricating oil; the annular step of the sleeve is matched with the double-round nut to axially fix the rolling bearing, so that the stability is improved; the inner bearing spacer ring is matched with the outer bearing spacer ring to ensure the balance of force transmission between the rolling bearings.
Description
Technical Field
The utility model relates to a vertical drain pump of major axis especially relates to an anti-reverse device of leak protection oil.
Background
The anti-reverse device applied to the long-shaft vertical drainage pump can effectively prevent the reverse rotation of the water pump when the water pump is started and stopped. Referring to fig. 1, the conventional anti-reverse device comprises a bearing sleeve 2, a bearing seat 3, a rolling bearing 4, an outer bearing spacer ring 5, a circlip 6 for a shaft, a framework oil seal 7, an anti-reverse rotating disc 8, an anti-reverse end cover 9, an adjusting nut 10 and a cylindrical pin 11, wherein the rolling bearing 4 is lubricated by thin oil. In the structure, two framework oil seals 7 are combined to form a bottom sealing structure. The sealing degree of the framework oil seal 7 depends on the magnitude of radial force, incomplete sealing is easy to generate leakage when the radial force is too small, and dry friction is easy to generate when the radial force is too large, so that the lip part is burnt out; on the other hand, the higher the rotation speed, the more serious the heat generation, and when the heat generation exceeds the allowable rubber temperature, the oil seal may be aged, cracked and damaged. Therefore, the sealing structure has a great risk of oil leakage.
In addition, the conventional anti-reverse apparatus is not reliable in fixing the rolling bearing 4 by the circlip 6 for shaft and the outer bearing spacer ring 5. First, the force that the circlip 6 for the shaft can withstand is limited, and 80% of the area is suspended in the air. Then, the outer bearing spacer ring 5 can only transmit the force transmitted by the outer bearing ring, and the force transmitted by the inner bearing ring has no acting point. These unbalance factors can cause a considerable loss of effectiveness of the device for balancing axial forces during operation of the unit, which in the past also reduces the service life of the rolling bearing 4.
SUMMERY OF THE UTILITY MODEL
To the above problems, the utility model provides an anti-reverse device of leak protection oil.
The purpose of the utility model can be realized by the following technical scheme: an anti-reverse device for preventing oil leakage comprises a sleeve, a bearing seat, an O-shaped sealing ring, a rolling bearing, a double-round nut, an outer bearing spacer ring, an inner bearing spacer ring, an anti-reverse rotating disc, an anti-reverse end cover, an adjusting nut and a cylindrical pin, wherein the sleeve, the bearing seat, the O-shaped sealing ring, the rolling bearing, the double-round nut, the outer bearing spacer ring, the inner bearing spacer ring, the; the lower end of the sleeve is provided with a flange structure, the flange structure is connected with the lower end face of the bearing seat through a screw, and an O-shaped sealing ring is arranged between the flange structure and the lower end face of the bearing seat; the outer wall of the lower part of the sleeve is provided with an annular step, the outer wall of the upper end of the sleeve is provided with external threads, the rolling bearings are arranged in the bearing seat, the lower end surface of a bearing inner ring of the rolling bearing at the lowest end is abutted against the annular step at the lower part of the sleeve, the double-round nut is in threaded connection with the external threads at the upper end of the sleeve, and the rolling bearings are tightly pressed in the bearing seat by pressing the upper end surface of the bearing inner ring of the rolling; an outer bearing spacer ring is arranged between the outer rings of at least one adjacent rolling bearing, and an inner bearing spacer ring is arranged between the inner rings of the bearings.
Furthermore, the number of the rolling bearings is three, an outer bearing spacer ring is arranged between the middle rolling bearing and the bearing outer ring of the rolling bearing at the lowest end, and an inner bearing spacer ring is arranged between the bearing inner rings.
Further, the anti-reverse rotating disc is connected with the upper end face of the bearing seat through a screw, the lower end face of the anti-reverse end cover abuts against the upper end face of the sleeve, the upper end face of the anti-reverse end cover is pressed by an adjusting nut, the adjusting nut is in threaded connection with the motor shaft and tightly presses the anti-reverse end cover, the adjusting nut is connected with the upper end face of the anti-reverse end cover through a screw, and the anti-reverse rotating disc is connected with the anti-reverse end cover through a cylindrical pin.
Further, a sealing ring mounting groove is formed in the inner edge of the lower end face of the bearing seat, and the O-shaped sealing ring is mounted in the sealing ring mounting groove.
Compared with the prior art, the beneficial effects of the utility model are that: the sleeve pipe is matched with the O-shaped sealing ring to replace a double-framework oil seal structure in the original anti-reversal device, so that the lubricating oil which is not influenced by radial force and high temperature realizes zero leakage; the annular step is processed at the lower part of the sleeve to replace an elastic retainer ring for a shaft in the original anti-reverse device, the annular step realizes the backstopping of the rolling bearing and plays a role in fixing the rolling bearing, and the stability is improved; the double-round nut is adopted to replace a step on a bearing sleeve in the original anti-reversal device, so that the upper end surface of the rolling bearing is fastened, and the rolling bearing is more convenient to disassemble; the inner bearing spacer ring is added, the inner bearing spacer ring is matched with the outer bearing spacer ring to ensure that the force transmission between the rolling bearings is in a balanced state, so that the good service performance of the rolling bearings is ensured, and the service life of the rolling bearings is prolonged.
Drawings
Fig. 1 is a schematic structural view of an anti-reverse apparatus of a conventional long-axis vertical drain pump.
The components in fig. 1 are labeled as follows:
the device comprises a motor shaft 1, a bearing sleeve 2, a bearing seat 3, a rolling bearing 4, an outer bearing spacer ring 5, an elastic retainer ring for a shaft 6, a framework oil seal 7, an anti-reverse rotating disc 8, an anti-reverse end cover 9, an adjusting nut 10 and a cylindrical pin 11.
Fig. 2 is a schematic structural diagram of the present invention.
The components in fig. 2 are labeled as follows:
the structure comprises a motor shaft 1, a sleeve 2, a flange 201 structure, an annular step 202, a bearing seat 3, a sealing ring 4O-shaped, a rolling bearing 5, a double-round nut 6, an outer bearing spacer ring 7, an inner bearing spacer ring 8, an anti-reverse rotating disc 9, an anti-reverse end cover 10, an adjusting nut 11 and a cylindrical pin 12.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.
Referring to fig. 2, the oil leakage preventing reverse rotation preventing device comprises a sleeve 2, a bearing seat 3, an O-shaped sealing ring 4, a rolling bearing 5, a double-round nut 6, an outer bearing spacer ring 7, an inner bearing spacer ring 8, a reverse rotation preventing disc 9, a reverse rotation preventing end cover 10, an adjusting nut 11 and a cylindrical pin 12, wherein the sleeve 2 is installed on a motor shaft 1 of a long-shaft vertical drainage pump.
The lower extreme of sleeve pipe 2 is equipped with flange structure 201, flange structure 201 passes through the screw to be connected with the lower terminal surface of bearing frame 3, is equipped with the O shape sealing washer 4 that is used for sealed between the lower terminal surface of flange structure 201 and bearing frame 3, so constitutes the bottom seal structure of anti-reverse device. The inner edge of the lower end face of the bearing seat 3 is provided with a sealing ring mounting groove, and the O-shaped sealing ring 4 is mounted in the sealing ring mounting groove.
The outer wall of the lower portion of the sleeve 2 is provided with an annular step 202 protruding along the circumferential direction, the outer wall of the upper end of the sleeve 2 is provided with external threads, the rolling bearings 5 are installed in the bearing seat 3, the lower end face of the bearing inner ring of the rolling bearing 5 at the lowest end abuts against the annular step 202 at the lower portion of the sleeve 2, the double-round nut 6 is in threaded connection with the external threads at the upper end of the sleeve 2, and the three rolling bearings 5 are pressed in the bearing seat 3 through the upper end face of the bearing inner ring of the rolling bearing 5. In this embodiment, an outer bearing spacer ring 7 is provided between the middle rolling bearing 5 and the bearing outer ring of the lowermost rolling bearing 5, and an inner bearing spacer ring 8 is provided between the middle rolling bearing 5 and the bearing inner ring of the lowermost rolling bearing 5.
The anti-reverse rotation disc 9 is connected with the upper end face of the bearing seat 3 through a screw, the lower end face of the anti-reverse rotation end cover 10 is abutted against the upper end face of the sleeve 2, the upper end face of the anti-reverse rotation end cover 10 is pressed by an adjusting nut 11, the adjusting nut 11 is in threaded connection with the motor shaft 1 and compresses the anti-reverse rotation end cover 10, the adjusting nut 11 is connected with the upper end face of the anti-reverse rotation end cover 10 through a screw, and the anti-reverse rotation disc 9 is connected with the anti-reverse rotation end cover 10 through a cylindrical pin.
Compared with the original anti-reverse device, the anti-reverse device adopts the sleeve 1 matched with the O-shaped sealing ring 4 to replace a double-framework oil seal structure in the original anti-reverse device, so that the lubricating oil which is not influenced by radial force and high temperature realizes zero leakage; an annular step 202 is processed at the lower part of the sleeve 2 to replace an elastic retainer ring for a shaft in the original anti-reverse device, and the annular step 202 realizes the backstopping of the rolling bearing 5 and plays a role in fixing the rolling bearing 5; the double-round nut 6 is adopted to replace a step on a bearing sleeve in the original anti-reversal device, so that the upper end surface of the rolling bearing 5 is fastened and the rolling bearing is more convenient to disassemble; the inner bearing spacer ring 8 is added, so that the force transmitted from the bearing outer ring of the rolling bearing 5 can be transmitted through the outer bearing spacer ring 7, the force transmitted from the bearing inner ring of the rolling bearing 5 can be transmitted through the inner bearing spacer ring 8, a balanced state is realized, and the good use performance of the rolling bearing 5 is ensured.
It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention shall include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art, and shall be subject to the appended claims.
Claims (4)
1. An anti-reverse device for preventing oil leakage comprises a bearing seat, a rolling bearing, an outer bearing spacer ring, an anti-reverse rotating disc, an anti-reverse end cover, an adjusting nut and a cylindrical pin, wherein the bearing seat is arranged on a motor shaft of a long-shaft vertical drainage pump; the drainage pump is characterized by further comprising a sleeve, an O-shaped sealing ring, a double-round nut and an inner bearing spacing ring, wherein the sleeve is arranged on a motor shaft of the long-shaft vertical drainage pump; the lower end of the sleeve is provided with a flange structure, the flange structure is connected with the lower end face of the bearing seat through a screw, and an O-shaped sealing ring is arranged between the flange structure and the lower end face of the bearing seat; the outer wall of the lower part of the sleeve is provided with an annular step, the outer wall of the upper end of the sleeve is provided with external threads, the rolling bearings are arranged in the bearing seat, the lower end surface of a bearing inner ring of the rolling bearing at the lowest end is abutted against the annular step at the lower part of the sleeve, the double-round nut is in threaded connection with the external threads at the upper end of the sleeve, and the rolling bearings are tightly pressed in the bearing seat by pressing the upper end surface of the bearing inner ring of the rolling; an outer bearing spacer ring is arranged between the outer rings of at least one adjacent rolling bearing, and an inner bearing spacer ring is arranged between the inner rings of the bearings.
2. The oil leakage preventing reverse rotation preventing device of claim 1, wherein the number of the rolling bearings is three, an outer bearing spacer ring is arranged between the middle rolling bearing and the outer bearing ring of the lowest rolling bearing, and an inner bearing spacer ring is arranged between the inner bearing rings.
3. The oil leakage preventing anti-reverse device according to claim 1, wherein the anti-reverse rotation disc is connected with the upper end face of the bearing seat through a screw, the lower end face of the anti-reverse rotation end cover abuts against the upper end face of the sleeve, the upper end face of the anti-reverse rotation end cover is pressed by an adjusting nut, the adjusting nut is in threaded connection with a motor shaft and presses the anti-reverse rotation end cover, the adjusting nut is connected with the upper end face of the anti-reverse rotation end cover through a screw, and the anti-reverse rotation disc and the anti-reverse rotation end cover are connected through a cylindrical pin.
4. The oil leakage preventing reverse rotation preventing device of claim 1, wherein a sealing ring mounting groove is formed in the inner edge of the lower end surface of the bearing seat, and the O-shaped sealing ring is mounted in the sealing ring mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405623.8U CN211648570U (en) | 2019-12-27 | 2019-12-27 | Oil leakage prevention anti-reversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405623.8U CN211648570U (en) | 2019-12-27 | 2019-12-27 | Oil leakage prevention anti-reversion device |
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| Publication Number | Publication Date |
|---|---|
| CN211648570U true CN211648570U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922405623.8U Active CN211648570U (en) | 2019-12-27 | 2019-12-27 | Oil leakage prevention anti-reversion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046346A (en) * | 2021-11-30 | 2022-02-15 | 中国航发湖南动力机械研究所 | Built-in rolling bearing fixing structure |
-
2019
- 2019-12-27 CN CN201922405623.8U patent/CN211648570U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114046346A (en) * | 2021-11-30 | 2022-02-15 | 中国航发湖南动力机械研究所 | Built-in rolling bearing fixing structure |
| CN114046346B (en) * | 2021-11-30 | 2023-12-15 | 中国航发湖南动力机械研究所 | Built-in rolling bearing fixing structure |
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