CN205136016U - A magnetic force seal structure for lobe pump drive end - Google Patents
A magnetic force seal structure for lobe pump drive end Download PDFInfo
- Publication number
- CN205136016U CN205136016U CN201520423011.0U CN201520423011U CN205136016U CN 205136016 U CN205136016 U CN 205136016U CN 201520423011 U CN201520423011 U CN 201520423011U CN 205136016 U CN205136016 U CN 205136016U
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- CN
- China
- Prior art keywords
- magnet rotor
- drive end
- seal
- seal structure
- outer magnet
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a magnetic force seal structure for lobe pump drive end, it includes the magnetic transmission ware, its characterized in that: the magnetic transmission ware includes interior magnet rotor and outer magnet rotor, interior magnet rotor and actuating shaft connection, outer magnet rotor is connected with the motor shaft, sets up static sealing structure between outer magnet rotor and the interior magnet rotor. The utility model discloses utilize the magnetic transmission technique, become the lobe pump drive end outside had been solved in the drive end movive seal into the static seal oil leak and wearing and tearing. Because not friction so do not need the lubrication, does not have the heat yet, solitary oil cup and cooling water have been cancelled to here simultaneously, and because be complete static seal, so further improved the ultimate vacuum degree of lobe pump. Satisfying under customer demands's the condition, nature more economic than sealed motor has reached the effect of sealed motor simultaneously, and economic nature and practicality have.
Description
Technical field
The utility model relates to the technical field of Roots pump drive end sealing, specifically a kind of magnetic seal structure for Roots pump drive end, can thoroughly do away with the leakage inside and outside the pump housing of air, process gas and vacuum grease, be a kind of revolutionary advanced product.
Background technique
At present, the Seal Design of Roots pump drive end is generally adopt outside framework oil seal, mechanical seal or the hermetically sealed form of plug-in type motor.
Outside framework oil seal is adopted to be place two lip seal at the two ends of a section of live axle, centre is full of lubricant oil, when live axle High Rotation Speed time, the sealing lip that standing motionless lip seal utilization contacts with live axle and the sealing oil film that lubricant oil is formed realize the clearance seal of rotatingshaft and static junction surface.Main material due to outside framework oil seal is rubber, has wearing and tearing very fast when live axle runs up, working life short and heat-resisting difference defect.Mechanical seal is adopted to be settle a rotating ring on the driving shaft, rotate along with axle and rotate, junction surface settles a stationary ring, do not rotate with rotatingshaft, stationary ring rubbing surface and rotating ring rubbing surface contact when rotatingshaft high speed rotating, and form one deck oil film in both rubbing surfaces, thus form sealing.Although the sealing effect of mechanical seal and heat resistance better than outside framework oil seal, but also there is not resistance to pressure reduction, the mechanical seal design of outstanding now general Roots pump utilizes the gear of drive end or disc that lubricant oil is thrown in mechanical seal chamber, and easily cause the lubricant oil of mechanical seal abundant not, the stationary ring rubbing surface of mechanical seal and rotating ring rubbing surface can not be made to be formed and effectively to seal oil film, not only greatly add attrition, reduce the working life of mechanical seal, more easily cause the situation that leakage of oil and Roots pump degree of vacuum cannot be stable simultaneously.
Insertion sealed motor utilizes the Electromagnetic generation principle of motor hermetically sealed to realize, sealing effect, heat resistance, resistance to differential pressure type than existing outside framework oil seal and mechanical seal good, but belong to nonstandardized technique motor due to this motor, and motor seal more complicated, so involve great expense, simultaneously because do not use coupling, the precision-fit that the needs for motor and Roots pump are very high, and then further raised the price of Roots pump entirety.
Model utility content
The purpose of this utility model is to provide a kind of magnetic seal structure for Roots pump drive end, the sealing solving existing use outside framework oil seal is poor, working life is short, poor heat resistance or use mechanical seal resistance to differential pressure poor, the defect of vacustat difference, avoids the situation because adopting motor insertion sealed cost high simultaneously.
To achieve these goals, the technical solution of the utility model is: a kind of magnetic seal structure for Roots pump drive end, it comprises magnetic driver, it is characterized in that: described magnetic driver comprises interior magnet rotor and outer magnet rotor, described interior magnet rotor is connected with live axle, outer magnet rotor is connected with motor shaft, arranges static seal structure between outer magnet rotor and interior magnet rotor, utilizes rotating magnetic field to realize transmission between described interior magnet rotor and outer magnet rotor.Described live axle is arranged on front cover, and described static seal structure is the stuffing box gland be fixedly mounted on front cover.According to embodiment of the present utility model, described outer magnet rotor one end arranges motor axis hole and is connected with motor shaft, the other end arranges a groove, interior magnet rotor is positioned at the groove of outer magnet rotor, also be provided with a drive shaft hole in interior magnet rotor to be connected with the front end of live axle, live axle is positioned at front cover, and interior magnet rotor overcoat has a stuffing box gland, described stuffing box gland is fixed on front cover by a flange, all arranges seal ring between front cover and flange and between flange and stuffing box gland.
Described live axle side is socketed with static seal structure near front cover place, inside and outside it, transmission is 2 magnetic drives permanent magnets, carry for power, such pump chamber is 100% machinery static sealing, and motor power is transmitted by rotating magnetic field, and therefore the pump housing is inside and outside is complete static seal, substantially wearing and tearing have been stopped, working life significantly extends, and does not have the passage of inside and outside seepage simultaneously, and the seepage in any direction all can not occur.
The utility model discloses a kind of magnetic seal structure for Roots pump drive end, utilize magnetic drive technology, become drive end motive sealing into static seal and solve leakage of oil outside Roots pump drive end and wearing and tearing.Simultaneously because not friction, so do not need lubrication, there is no heat yet, eliminate independent lubricating cup and cooling water herein, and because be static seal completely, so further increase the ultimate vacuum of Roots pump.When meeting customer need, than sealed electric-motor property more economically, reach the effect of sealed electric-motor, Economy and practicability have both simultaneously.
Accompanying drawing explanation
Fig. 1 is prior art lip-type seal structural representation.
Fig. 2 is the utility model structural representation.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Figure comprises:
1-front cover,
2-axle sleeve,
3-live axle,
4-seal ring,
Magnet rotor in 5-,
6-stuffing box gland,
The outer magnet rotor of 7-,
8-motor shaft.
The utility model discloses a kind of magnetic seal structure for Roots pump drive end, it comprises magnetic driver, it is characterized in that: described magnetic driver comprises interior magnet rotor 5 and outer magnet rotor 7, described interior magnet rotor 5 is connected with live axle 3, outer magnet rotor 7 is connected with motor shaft 8, arranges static seal structure between outer magnet rotor 7 and interior magnet rotor 5.Described live axle 3 is arranged on front cover 1, and described static seal structure is the stuffing box gland 6 be fixedly mounted on front cover 1, and described stuffing box gland 6 is provided with seal ring 4.According to embodiment of the present utility model, described outer magnet rotor 7 one end arranges motor axis hole and is connected with motor shaft 8, the other end arranges a groove, interior magnet rotor 5 is positioned at the groove of outer magnet rotor 7, also be provided with a drive shaft hole in interior magnet rotor 5 to be connected with the front end of live axle 3, live axle 3 is positioned at front cover 1, interior magnet rotor 5 overcoat has a stuffing box gland 6, described stuffing box gland 6 is fixed on front cover 1 by a flange, all arranges seal ring 4 between front cover 1 and flange and between flange and stuffing box gland 6.
As shown in the figure, interior magnet rotor 5 is interior permanent magnet, fixes, synchronously turn to pump shaft, and stuffing box gland 6 is non-metallic sleeve gaskets, non-magnetic.Wherein play hermetic seal effect be this layer nonmetal, outer magnet rotor 7 is outer field permanent magnetism, fixedly belongs to synchronous axial system with motor shaft, when electric machine rotation, interior permanent magnet experience the rotation of outer permanent magnet time, generation current realizes synchronous operation.Sealing nonmetal is can not generation current, therefore can not affect synchronous axial system.
The center, end of described interior magnet rotor is provided with depressed part, leaves certain withdrawal space, is convenient to install.
The utility model is different from prior art part and is: driving shaft and motor shaft contactless, utilize the form of magnetic couple to carry out transferring power, because the penetrability of magnetic force, nonmetal cover be installed therebetween, taking static seal with pump chamber joint.So just achieving the motive sealing of change driving shaft is static seal.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that the utility model is specifically implemented to be confined to these explanations above-mentioned.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. the magnetic seal structure for Roots pump drive end, it comprises magnetic driver, it is characterized in that: described magnetic driver comprises interior magnet rotor and outer magnet rotor, described interior magnet rotor is connected with live axle, outer magnet rotor is connected with motor shaft, between outer magnet rotor and interior magnet rotor, static seal structure is set, between described interior magnet rotor and outer magnet rotor, utilizes rotating magnetic field to realize transmission.
2. a kind of magnetic seal structure for Roots pump drive end as claimed in claim 1, it is characterized in that: described live axle is arranged on front cover, described static seal structure is the stuffing box gland be fixedly mounted on front cover.
3. a kind of magnetic seal structure for Roots pump drive end as claimed in claim 2, it is characterized in that: described outer magnet rotor one end arranges motor axis hole and is connected with motor shaft, the other end arranges a groove, interior magnet rotor is positioned at the groove of outer magnet rotor, also be provided with a drive shaft hole in interior magnet rotor to be connected with the front end of live axle, live axle is positioned at front cover, interior magnet rotor overcoat has a stuffing box gland, described stuffing box gland is fixed on front cover by a flange, all arranges seal ring between front cover and flange and between flange and front cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423011.0U CN205136016U (en) | 2015-06-18 | 2015-06-18 | A magnetic force seal structure for lobe pump drive end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423011.0U CN205136016U (en) | 2015-06-18 | 2015-06-18 | A magnetic force seal structure for lobe pump drive end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205136016U true CN205136016U (en) | 2016-04-06 |
Family
ID=55621815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520423011.0U Expired - Fee Related CN205136016U (en) | 2015-06-18 | 2015-06-18 | A magnetic force seal structure for lobe pump drive end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205136016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485010A (en) * | 2015-06-18 | 2016-04-13 | 上海伊莱茨真空技术有限公司 | Magnetic sealing structure for drive end of roots pump |
-
2015
- 2015-06-18 CN CN201520423011.0U patent/CN205136016U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485010A (en) * | 2015-06-18 | 2016-04-13 | 上海伊莱茨真空技术有限公司 | Magnetic sealing structure for drive end of roots pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20170618 |