CN102868248B - The leakage preventing structure of pump motor bearing - Google Patents
The leakage preventing structure of pump motor bearing Download PDFInfo
- Publication number
- CN102868248B CN102868248B CN201210310962.8A CN201210310962A CN102868248B CN 102868248 B CN102868248 B CN 102868248B CN 201210310962 A CN201210310962 A CN 201210310962A CN 102868248 B CN102868248 B CN 102868248B
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- bearing
- end cap
- electric motor
- motor end
- inner chamber
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Abstract
The invention belongs to motor construction technology, relate to the improvement to pump motor bearing arrangement.It comprises electric motor end cap (1), rotating shaft (2), sealed bearing (3), bearing inner ring locking nut (4), bearing outer ring baffle ring (5), pump case (6) and movable sealing mechanism (7); It is characterized in that: have an annular groove (8) at electric motor end cap inner chamber, the inwall of electric motor end cap inner chamber has at least 3 outages (10), and it is trapezoidal discharge opeing nut (9) that the thread segment of rotating shaft (2) is twisted a cross section.The present invention has water-impervious ability, after the dynamic sealing material wearing and tearing of pump motor, can prevent the liquid leaking into electric motor end cap inner chamber from pump case inner chamber from infiltrating motor bearings and motor internal, ensure that service behaviour and the useful life of motor.
Description
Technical field
The invention belongs to motor construction technology, relate to the improvement to pump motor bearing arrangement.
Background technology
The bearing arrangement of current a kind of pump motor is see Fig. 1, and it is made up of electric motor end cap 1, rotating shaft 2, sealed bearing 3, bearing inner ring locking nut 4, bearing outer ring baffle ring 5, pump case 6 and movable sealing mechanism 7.The outer ring of sealed bearing 3 is arranged in the bearing outer ring mount pad of electric motor end cap 1, by bearing outer ring baffle ring 5, bearing outer ring is compressed, bearing outer ring baffle ring 5 is fixed by screws on the right side of bearing outer ring mount pad, the inner ring of sealed bearing 3 is arranged on the bearing inner race mount pad of rotating shaft 2, bearing inner ring locking nut 4 is screwed on the thread segment on the right of rotating shaft 2 upper bearing (metal) inner ring mount pad, bearing inner race is compressed, fit and are bolted as entirety in the right side of electric motor end cap 1 and the left side of pump case 6, movable sealing mechanism 7 is installed between the right side of electric motor end cap 1 and the left side of pump case 6, the inner chamber of electric motor end cap 1 and pump case 6 is divided into the electric motor end cap inner chamber on the left side and the pump case inner chamber two parts on the right, the centre bore of the driven sealing mechanism 7 of rotating shaft 2 passes.Its shortcoming is: when the seal of movable sealing mechanism 7 and sealed bearing 3 aging distortion occurs, after sealing effectiveness declines, water in pump case inner chamber or oil or other liquid will to electric motor end cap inner chamber seepage, these liquid likely enter in motor bearings and even enter motor internal, affect service behaviour and the useful life of motor.
Summary of the invention
The object of the invention is: a kind of pump motor bearing leakage preventing structure with water-impervious ability is provided, after the dynamic sealing material wearing and tearing of pump motor, to prevent liquid from infiltrating motor bearings and motor internal, ensure service behaviour and the useful life of motor.
Technical scheme of the present invention is: the leakage preventing structure of pump motor bearing, and it comprises electric motor end cap 1, rotating shaft 2, sealed bearing 3, bearing inner ring locking nut 4, bearing outer ring baffle ring 5, pump case 6 and movable sealing mechanism 7, the outer ring of sealed bearing 3 is arranged in the bearing outer ring mount pad of electric motor end cap 1, by bearing outer ring baffle ring 5, bearing outer ring is compressed, bearing outer ring baffle ring 5 is fixed by screws on the right side of bearing outer ring mount pad, the inner ring of sealed bearing 3 is arranged on the bearing inner race mount pad of rotating shaft 2, bearing inner ring locking nut 4 is screwed on the thread segment on the right of rotating shaft 2 upper bearing (metal) inner ring mount pad, bearing inner race is compressed, fit and are bolted as entirety in the right side of electric motor end cap 1 and the left side of pump case 6, movable sealing mechanism 7 is installed between the right side of electric motor end cap 1 and the left side of pump case 6, the inner chamber of electric motor end cap 1 and pump case 6 is divided into the electric motor end cap inner chamber on the left side and the pump case inner chamber two parts on the right, the centre bore of the driven sealing mechanism 7 of rotating shaft 2 passes, it is characterized in that: on the inwall of electric motor end cap inner chamber, there is an annular groove 8 on the right of bearing outer ring mount pad, the inwall of electric motor end cap inner chamber has that be uniformly distributed along the circumference, through with electric motor end cap 1 outer surface at least 3 outages 10, and the inner port of all outages 10 is all communicated with annular groove 8, on the thread segment of rotating shaft 2, to twist a cross section be trapezoidal discharge opeing nut 9 for the right of bearing inner ring locking nut 4, and the outward flange of discharge opeing nut 9 is corresponding with the position of annular groove 8.
Advantage of the present invention is: have water-impervious ability, after the dynamic sealing material wearing and tearing of pump motor, can prevent the liquid leaking into electric motor end cap inner chamber from pump case inner chamber from infiltrating motor bearings and motor internal, ensure that service behaviour and the useful life of motor.
Accompanying drawing explanation
Fig. 1 is the bearing arrangement schematic diagram of current a kind of pump motor.
Fig. 2 is structural representation of the present invention.
Embodiment
Be described in further details below in conjunction with to the present invention.See Fig. 2, the leakage preventing structure of pump motor bearing, it comprises electric motor end cap 1, rotating shaft 2, sealed bearing 3, bearing inner ring locking nut 4, bearing outer ring baffle ring 5, pump case 6 and movable sealing mechanism 7, the outer ring of sealed bearing 3 is arranged in the bearing outer ring mount pad of electric motor end cap 1, by bearing outer ring baffle ring 5, bearing outer ring is compressed, bearing outer ring baffle ring 5 is fixed by screws on the right side of bearing outer ring mount pad, the inner ring of sealed bearing 3 is arranged on the bearing inner race mount pad of rotating shaft 2, bearing inner ring locking nut 4 is screwed on the thread segment on the right of rotating shaft 2 upper bearing (metal) inner ring mount pad, bearing inner race is compressed, fit and are bolted as entirety in the right side of electric motor end cap 1 and the left side of pump case 6, movable sealing mechanism 7 is installed between the right side of electric motor end cap 1 and the left side of pump case 6, the inner chamber of electric motor end cap 1 and pump case 6 is divided into the electric motor end cap inner chamber on the left side and the pump case inner chamber two parts on the right, the centre bore of the driven sealing mechanism 7 of rotating shaft 2 passes, it is characterized in that: on the inwall of electric motor end cap inner chamber, there is an annular groove 8 on the right of bearing outer ring mount pad, the inwall of electric motor end cap inner chamber has that be uniformly distributed along the circumference, through with electric motor end cap 1 outer surface at least 3 outages 10, and the inner port of all outages 10 is all communicated with annular groove 8, on the thread segment of rotating shaft 2, to twist a cross section be trapezoidal discharge opeing nut 9 for the right of bearing inner ring locking nut 4, and the outward flange of discharge opeing nut 9 is corresponding with the position of annular groove 8.
For the ease of installation and removal discharge opeing nut 9, the outward flange of discharge opeing nut 9 has at least 2 the breach 9a be uniformly distributed along the circumference.
Operation principle of the present invention is: when the seal of movable sealing mechanism 7 and sealed bearing 3 aging distortion occurs, after sealing effectiveness declines, water in pump case inner chamber or oil or other liquid will to electric motor end cap inner chamber seepage, these liquid enter electric motor end cap inner chamber along rotating shaft 2, rotate the effect of the centrifugal force produced at discharge opeing nut 9 under, sepage enters annular groove 8, is discharged by outage 10.This prevents sepage and enter motor bearings and motor cavity.
One embodiment of the present of invention, the inwall of electric motor end cap inner chamber have 3 that be uniformly distributed along the circumference, through with electric motor end cap 1 outer surface outages 10, the outward flange of discharge opeing nut 9 have 2 the breach 9a be uniformly distributed along the circumference.
Claims (2)
1. the leakage preventing structure of pump motor bearing, it comprises electric motor end cap (1), rotating shaft (2), sealed bearing (3), bearing inner ring locking nut (4), bearing outer ring baffle ring (5), pump case (6) and movable sealing mechanism (7), the outer ring of sealed bearing (3) is arranged in the bearing outer ring mount pad of electric motor end cap (1), by bearing outer ring baffle ring (5), bearing outer ring is compressed, bearing outer ring baffle ring (5) is fixed by screws on the right side of bearing outer ring mount pad, the inner ring of sealed bearing (3) is arranged on the bearing inner race mount pad of rotating shaft (2), bearing inner ring locking nut (4) is screwed on the thread segment in rotating shaft (2), this thread segment is positioned at the right of bearing inner race mount pad, bearing inner race is compressed, fit and are bolted as entirety in the right side of electric motor end cap (1) and the left side of pump case (6), movable sealing mechanism (7) is installed between the right side of electric motor end cap (1) and the left side of pump case (6), the inner chamber of electric motor end cap (1) and pump case (6) is divided into the electric motor end cap inner chamber on the left side and the pump case inner chamber two parts on the right, the centre bore of rotating shaft (2) driven sealing mechanism (7) passes, it is characterized in that: on the inwall of electric motor end cap inner chamber, there is an annular groove (8) on the right of bearing outer ring mount pad, the inwall of electric motor end cap inner chamber has that be uniformly distributed along the circumference, through with electric motor end cap (1) outer surface at least 3 outages (10), and the inner port of all outages (10) is all communicated with annular groove (8), on the thread segment of rotating shaft (2), to twist a cross section be trapezoidal discharge opeing nut (9) for the right of bearing inner ring locking nut (4), and the outward flange of discharge opeing nut (9) is corresponding with the position of annular groove (8).
2. the leakage preventing structure of pump motor bearing according to claim 1, is characterized in that: on the outward flange of discharge opeing nut (9), have at least 2 breach (9a) be uniformly distributed along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310962.8A CN102868248B (en) | 2012-08-28 | 2012-08-28 | The leakage preventing structure of pump motor bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310962.8A CN102868248B (en) | 2012-08-28 | 2012-08-28 | The leakage preventing structure of pump motor bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102868248A CN102868248A (en) | 2013-01-09 |
| CN102868248B true CN102868248B (en) | 2015-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210310962.8A Expired - Fee Related CN102868248B (en) | 2012-08-28 | 2012-08-28 | The leakage preventing structure of pump motor bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN102868248B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194649A (en) * | 2016-08-26 | 2016-12-07 | 宁波东电电力设备制造有限公司 | A kind of hydro-generating Unit pump case |
| CN106602784B (en) * | 2017-01-17 | 2023-06-20 | 广东天洋电机有限公司 | High-speed motor structure |
| CN107489612B (en) * | 2017-08-28 | 2019-03-01 | 马来勋 | Motor power device |
| US20190157939A1 (en) * | 2017-11-21 | 2019-05-23 | Regal Beloit America, Inc. | End shield for use in an electric machine and method of forming the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0865949A (en) * | 1994-08-19 | 1996-03-08 | Matsushita Electric Ind Co Ltd | Motor |
| CN201705716U (en) * | 2010-06-04 | 2011-01-12 | 淮安精英电气科技有限公司 | Submersible sewage pump motor shaft sealing device |
| CN202014154U (en) * | 2011-02-28 | 2011-10-19 | 上海电机系统节能工程技术研究中心有限公司 | Bearing fixing structure for three-phase asynchronous motor |
-
2012
- 2012-08-28 CN CN201210310962.8A patent/CN102868248B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0865949A (en) * | 1994-08-19 | 1996-03-08 | Matsushita Electric Ind Co Ltd | Motor |
| CN201705716U (en) * | 2010-06-04 | 2011-01-12 | 淮安精英电气科技有限公司 | Submersible sewage pump motor shaft sealing device |
| CN202014154U (en) * | 2011-02-28 | 2011-10-19 | 上海电机系统节能工程技术研究中心有限公司 | Bearing fixing structure for three-phase asynchronous motor |
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| Publication number | Publication date |
|---|---|
| CN102868248A (en) | 2013-01-09 |
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Granted publication date: 20151209 Termination date: 20180828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |