CN101442232A - Combined shaft seal for motor - Google Patents
Combined shaft seal for motor Download PDFInfo
- Publication number
- CN101442232A CN101442232A CNA2007101900498A CN200710190049A CN101442232A CN 101442232 A CN101442232 A CN 101442232A CN A2007101900498 A CNA2007101900498 A CN A2007101900498A CN 200710190049 A CN200710190049 A CN 200710190049A CN 101442232 A CN101442232 A CN 101442232A
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- CN
- China
- Prior art keywords
- oil
- axial
- shaft seal
- sealing cap
- oil sealing
- Prior art date
- 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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Abstract
The invention discloses a combined shaft gland for an electric motor, which consists of a radial shaft gland and an axial shaft gland. The radial shaft gland consists of an oil seal cover in clearance fit with a shaft of the electric motor and a felt ring embedded into a radial concave ring groove in an inner bore of the oil seal cover. The axial shaft gland consists of an oil seal cover and an oil retainer arranged among bearings and rotating along with the shaft of the electric motor. The oil retainer is of a sleeve shape, the right end face of the oil seal cover is provided with an axial concave ring groove in clearance fit with a nozzle of the oil retainer, and the nozzle of the oil retainer is axially sleeved with the axial concave ring groove of the oil seal cover. The combined shaft gland rotates under double-seal condition, has good sealing property, keeps the bearings rotated under sufficient lubricating condition, and ensures that the electric motor is prevented from being damaged due to oil leakage.
Description
Technical field
The present invention relates to a kind of shaft seal structure, particularly a kind of shaft seal structure of motor output shaft end.
Background technology
The axle envelope of motor output shaft end is the important component that the protection bearing moves under lubricating condition.The axle envelope of commercially available motor is a kind of radial shaft seal structure, and this shaft seal structure is sealed and matched with static oil sealing cap endoporus middle concave annular groove setting-in felt circle and motor reel and forms.The radial shaft seal of prior art is simple in structure, and it is excessive and stop that extraneous dust enters the effect of bearing to play the restriction lubricant grease effectively.But the sealing property of radial shaft seal depends on felt circle and motor reel mated condition, and its sealing property just descends in case the felt circle weares and teares, and supplies the grease of bearing lubrication easily to leak out from the gap after being heated.The loss of lubricant grease will worsen the service conditions of bearing, the wearing and tearing of aggravation bearing, the useful life of reducing motor.
Summary of the invention
The present invention is primarily aimed at the deficiencies in the prior art, provides a kind of hermetically-sealed construction simple, easy to manufacture, can significantly improve the combined shaft seal for motor of sealing effectiveness.
The present invention is achieved through the following technical solutions technical goal.
Combined shaft seal for motor, it comprises radial shaft seal and axial axis envelope composition.Described radial shaft seal is made of oil sealing cap and oil sealing cap internal orifice dimension felt circle of setting-in in the spill annular groove of motor reel matched in clearance, it is outside improving: described axial axis envelope is made of the chip washer that is provided with between oil sealing cap and the bearing with the motor reel rotation, chip washer is a sleeve shaped, the oil sealing cap right side is provided with the axial spill annular groove with chip washer nozzle matched in clearance, and the chip washer nozzle is linked in the axial spill annular groove of oil sealing cap.
The present invention contains the axle envelope of two kinds of different structures, and wherein the axial fit length of the nozzle of oil sealing cap right side spill annular groove and chip washer is that 5～15mm constitutes the axial axis envelope, and this shaft seal structure is a labyrinth type.
The present invention compared with prior art has following good effect:
1, radial shaft seal and axial axis envelope combining structure is simple, easy to manufacture;
2, the dual axis seal structure significantly improves sealing effectiveness, and bearing lubrication is secure, the motor long service life.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Combined shaft seal for motor shown in the drawings, it is made up of radial shaft seal and axial axis envelope.Described radial shaft seal is made of oil sealing cap 1 and oil sealing cap 1 internal orifice dimension felt circle 3 of setting-in in the spill annular groove of motor reel 5 matched in clearance.Described axial axis envelope is made of the chip washer 2 that is provided with between oil sealing cap 1 and the bearing 4.Oil sealing cap 1 is located by connecting and capping bearing 4 with End cover for motor 6, and chip washer 2 is with motor reel 5 rotations.Chip washer 2 is a sleeve shaped, and oil sealing cap 1 right side is provided with the axial spill annular groove with chip washer 2 nozzle matched in clearance, the axial fit of axial spill annular groove of chip washer 2 and oil sealing cap 1.Present embodiment is the 10KW motor, and chip washer 2 nozzles and oil sealing cap 1 axial fit length are 8mm.The present invention's two kinds of dissimilar shaft seal structures when operation play different sealing functions.Excessive to the chip washer 2 of motor reel 5 rotation the time when lubricant grease, lubricant grease tangentially throws away under centrifugal action, and excessive lubricant grease is still got back in the trapped fuel chamber between oil sealing cap 1 and the bearing 4.Residual lubricant grease chip washer 2 and oil sealing cap 1 mutually fit partly form oil film, all the other lubricant grease axial flow of natural shutoff.The felt circle 3 of oil sealing cap 1 endoporus spill annular groove setting-in cooperates the formation radial seal structure still to bring into play sealing function with motor reel 5.Because the present invention rotates under the dual-seal condition, sealing property improves greatly, keeps bearing 4 to rotate under the sufficient lubrication condition, guarantees that motor does not take place because of losing the damage accident that oil causes.
Claims (2)
1, a kind of combined shaft seal for motor, it is made up of radial shaft seal and axial axis envelope; Described radial shaft seal is made of the oil sealing cap (1) of motor reel (5) matched in clearance and the felt circle (3) of oil sealing cap (1) internal orifice dimension setting-in in the spill annular groove; It is characterized in that: described axial axis envelope is made of the chip washer (2) that is provided with between oil sealing cap (1) and the bearing (4) with motor reel (5) rotation, chip washer (2) is a sleeve shaped, oil sealing cap (1) right side is provided with the axial spill annular groove with chip washer (2) nozzle matched in clearance, and chip washer (2) nozzle is linked in the axial spill annular groove of oil sealing cap (1).
2, combined shaft seal for motor according to claim 1 is characterized in that: described chip washer (2) nozzle and oil sealing cap (1) axially fit length are 5～15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101900498A CN101442232A (en) | 2007-11-20 | 2007-11-20 | Combined shaft seal for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101900498A CN101442232A (en) | 2007-11-20 | 2007-11-20 | Combined shaft seal for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101442232A true CN101442232A (en) | 2009-05-27 |
Family
ID=40726531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101900498A Pending CN101442232A (en) | 2007-11-20 | 2007-11-20 | Combined shaft seal for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101442232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411021A (en) * | 2016-10-08 | 2017-02-15 | 上海川也电机有限公司 | Sealing device for motor lubricating oil way |
-
2007
- 2007-11-20 CN CNA2007101900498A patent/CN101442232A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106411021A (en) * | 2016-10-08 | 2017-02-15 | 上海川也电机有限公司 | Sealing device for motor lubricating oil way |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090527 |