CN208078861U - A kind of permanent-magnet sealing transmission device - Google Patents
A kind of permanent-magnet sealing transmission device Download PDFInfo
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- CN208078861U CN208078861U CN201820521469.3U CN201820521469U CN208078861U CN 208078861 U CN208078861 U CN 208078861U CN 201820521469 U CN201820521469 U CN 201820521469U CN 208078861 U CN208078861 U CN 208078861U
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- permanent magnet
- magnet
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- permanent
- outer permanent
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Abstract
The utility model discloses a kind of permanent-magnet sealing transmission devices, and eddy-current loss is reduced using magnetic Circuit Design.The just outside permanent magnet (21) and reversed outer permanent magnet (22) put in cylindrical surface circumferentially and axial alternately continuously or are with a gap installing positioning, the interior permanent magnet (3) opposite with outer permanent magnet (2) with outer permanent magnet (2) to put installation site corresponding, but polarity is opposite.This design can reduce the eddy-current loss on metal sealing separation sleeve.
Description
Technical field
The utility model belongs to permanent-magnet sealing drive technology field and reduces especially in permanent-magnet sealing transmission device
Eddy-current loss on metal sealing separation sleeve.
Background technology
Currently, permanent-magnet sealing transmission be realize drive shaft seal zero leakage unique effective way, but metal sealing every
The bottleneck obstacle with high powe design is widely used as it from the upper eddy-current loss of set.It is in what cylindrical surface was put in the prior art
Just outside permanent magnet and reversed outer permanent magnet it is axial respectively in the same direction and continuously installation positioning, just outside permanent magnet and it is reversed outside
Circumferentially alternately continuously installation positions between permanent magnet, the interior permanent magnet opposite with outer permanent magnet puts peace with outer permanent magnet
Holding position corresponds to, but polarity is on the contrary, outer permanent magnet and interior permanent magnet attract each other.This magnet pose pattern makes magnetic close
It closes circuit to be formed on the anchor ring perpendicular to axis, when work induced electromotive force occurs and formed to close on metal sealing separation sleeve
Conjunction circuit has induced current and is formed, and then causes eddy-current loss.How to reduce or eliminate eddy-current loss is always permanent-magnet sealing
The major subjects of Research on transmission.
Invention content
The technical problem to be solved by the present invention is to provide a kind of permanent-magnet sealing transmission device, can reduce metal sealing every
From the upper eddy-current loss of set.
The utility model in order to solve the above technical problems, invented a kind of permanent-magnet sealing transmission device, including outer permanent magnet,
Interior permanent magnet and non-magnetic metal sealing separation sleeve and rack, metal sealing separation sleeve are located at outer permanent magnet and interior permanent magnet
Between and be sealingly mounted to need the bottom container that seals, location and installation that motor is installed on the top of the rack of bottom container,
Outer permanent magnet can be by intermediate member with motor operation, and interior permanent magnet can be driven by intermediate member and be sealed in lower part appearance
Shaft in device, the just outside permanent magnet put in cylindrical surface and reversed outer permanent magnet replace continuously circumferentially and axial
Installation positioning, the interior permanent magnet opposite with outer permanent magnet with outer permanent magnet to put installation site correspondings, but polarity is on the contrary, outside forever
Magnet and interior permanent magnet attract each other.This magnet pose pattern makes magnetic closed circuit both in the plane for being parallel to axis
Upper formation, also forms on the anchor ring perpendicular to axis.The induced electromotive force occurred on metal sealing separation sleeve when work exists
It is axial in pairs and reversed and offset each other in a wide range of, but can circumferentially be formed potential difference and with axial local induced electromotive force
Circulation is formed in a small range, this magnetic Circuit Design can increase eddy current resistance, reduce eddy-current loss.
In order to obtain preferably transmission effect, the outer permanent magnet and interior permanent magnet select Nd-Fe-B rare earth permanent magnetic material.
In order to obtain preferably transmission effect, while in order to allow permanent-magnet sealing transmission device in metal sealing separation sleeve
Component there is certain heat resistance, the outer permanent magnet Nd-Fe-B rare earth permanent magnetic material, interior permanent magnet to be selected to select SmCo
Permanent-magnet material.
In a kind of above-mentioned permanent-magnet sealing transmission device, in axial and circumferential between just outside permanent magnet and reversed outer permanent magnet
Can also be alternately and there are positioning to be installed with gap, the interior permanent magnet opposite with outer permanent magnet puts installation position with outer permanent magnet
Correspondence is set, such design can save permanent magnet in the case where obtaining identical transmission capacity.
The utility model has the beneficial effects that reducing the eddy-current loss of permanent-magnet sealing transmission device, transmission efficiency is improved.
Description of the drawings
Fig. 1 is permanent-magnet sealing transmission device overall structure diagram.
Fig. 2 is the outer permanent magnet pose pattern schematic diagram of the prior art.Vertical is that axially, lateral is cylinder unwrapping figure.Dot
" " indicates that reader is directed toward in magnetic line of force direction, and for reversed outer permanent magnet, plus sige "+" indicates that magnetic line of force direction is directed away from reader,
For just outside permanent magnet.
Fig. 3 is permanent magnet pose pattern schematic diagram in the prior art.Vertical is that axially, lateral is cylinder unwrapping figure.
Fig. 4 is prior art magnetic closed circuit schematic diagram.Magnetic closed circuit is formed on the anchor ring perpendicular to axis.
Fig. 5 is induced current schematic diagram on prior art metal sealing separation sleeve.When work on metal sealing separation sleeve
There is induced electromotive force and form closed circuit and have induced current to be formed.
Fig. 6 is the outer permanent magnet pose pattern schematic diagram of the utility model.Vertical is that axially, lateral is cylinder unwrapping figure.
Fig. 7 is permanent magnet pose pattern schematic diagram in the utility model.Vertical is that axially, lateral is cylinder unwrapping figure.
Fig. 8 is the distinctive magnetic closed circuit schematic diagram of the utility model, and magnetic closed circuit is on being parallel to the plane of axis
It is formed, is existed simultaneously with the magnetic closed circuit formed on the anchor ring of axis.
Fig. 9 is induced current schematic diagram on the utility model metal sealing separation sleeve.
In figure：1. cooling water outlet；2. outer permanent magnet；Permanent magnet in 3.；4. metal sealing separation sleeve；5. rack；6. cold
But water inlet；7. magnetic closed circuit；8. axial current；9. circumferential electric current；21. just outside permanent magnet；22. reversed outer permanent magnet；
31. permanent magnet in reversed；32. just inside permanent magnet.
Specific implementation mode
As an a kind of embodiment of permanent-magnet sealing transmission device of the present invention, non-magnetic stainless steel is selected to seal off
Set 4 is located between the outer permanent magnet 2 and the interior permanent magnet 3 of neodymium iron boron material of neodymium iron boron material and is sealingly mounted to lower seal appearance
The upper opening flange of device, at the same by rack 5 and stainless steel seal isolation set 4 together also location and installation in the upper of lower seal container
It is open on flange, motor is installed on the top of rack 5, and outer permanent magnet 2 connects motor output by intermediate member outer rotor assembly
Axis and with motor operation, interior permanent magnet 3 connects the shaft in container by intermediate member internal rotor assembly and can drive its rotation,
The just outside permanent magnet 21 put in cylindrical surface and reversely outer permanent magnet 22 are determined circumferentially and in axial alternately continuously install
Position, the interior permanent magnet 3 opposite with outer permanent magnet 2 with outer permanent magnet 2 to put installation site corresponding, but polarity is on the contrary, i.e. 21 pairs
31,22 correspondences 32, each corresponding position of outer permanent magnet 2 and interior permanent magnet 3 are answered to attract each other.
Claims (6)
1. a kind of permanent-magnet sealing transmission device, including outer permanent magnet (2), interior permanent magnet (3) and the isolation of non-magnetic metal sealing
(4) and rack (5) are covered, metal sealing separation sleeve (4) is between outer permanent magnet (2) and interior permanent magnet (3) and sealing is installed
The bottom container sealed to needs, location and installation install motor, outer permanent magnet (2) on the top of the rack (5) of bottom container
Can be by intermediate member with motor operation, interior permanent magnet (3) can be driven by intermediate member and is sealed in bottom container
Shaft, it is characterised in that the just outside permanent magnet (21) put in cylindrical surface and reversed outer permanent magnet (22) are in circumferential direction and in axis
To alternately continuously installation positioning, the interior permanent magnet (3) opposite with outer permanent magnet (2) put installation with outer permanent magnet (2)
Position corresponds to, but polarity is on the contrary, outer permanent magnet (2) and interior permanent magnet (3) attract each other.
2. a kind of permanent-magnet sealing transmission device according to claim 1, it is characterised in that the outer permanent magnet (2) and it is interior forever
Magnet (3) is Nd-Fe-B rare earth permanent magnetic material.
3. a kind of permanent-magnet sealing transmission device according to claim 1, it is characterised in that the outer permanent magnet (2) is neodymium iron
Boron rare earth permanent-magnetic material, interior permanent magnet (3) are samarium-cobalt permanent-magnetic material.
4. a kind of permanent-magnet sealing transmission device, including outer permanent magnet (2), interior permanent magnet (3) and the isolation of non-magnetic metal sealing
(4) and rack (5) are covered, metal sealing separation sleeve (4) is between outer permanent magnet (2) and interior permanent magnet (3) and sealing is installed
The bottom container sealed to needs, location and installation install motor, outer permanent magnet (2) on the top of the rack (5) of bottom container
Can be by intermediate member with motor operation, interior permanent magnet (3) can be driven by intermediate member and is sealed in bottom container
Shaft, it is characterised in that the just outside permanent magnet (21) put in cylindrical surface and reversed outer permanent magnet (22) are in circumferential direction and in axis
To alternately and there are with gap installation positioning, pendulum of the interior permanent magnet (3) opposite with outer permanent magnet (2) with outer permanent magnet (2)
Installation site correspondence is put, but polarity is on the contrary, outer permanent magnet (2) and interior permanent magnet (3) attract each other.
5. a kind of permanent-magnet sealing transmission device according to claim 4, it is characterised in that the outer permanent magnet (2) and it is interior forever
Magnet (3) is Nd-Fe-B rare earth permanent magnetic material.
6. a kind of permanent-magnet sealing transmission device according to claim 4, it is characterised in that the outer permanent magnet (2) is neodymium iron
Boron rare earth permanent-magnetic material, interior permanent magnet (3) are samarium-cobalt permanent-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521469.3U CN208078861U (en) | 2018-04-08 | 2018-04-08 | A kind of permanent-magnet sealing transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820521469.3U CN208078861U (en) | 2018-04-08 | 2018-04-08 | A kind of permanent-magnet sealing transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208078861U true CN208078861U (en) | 2018-11-09 |
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ID=64041063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820521469.3U Active CN208078861U (en) | 2018-04-08 | 2018-04-08 | A kind of permanent-magnet sealing transmission device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208078861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418392A (en) * | 2018-04-08 | 2018-08-17 | 浙江长城搅拌设备股份有限公司 | A kind of permanent-magnet sealing transmission device |
-
2018
- 2018-04-08 CN CN201820521469.3U patent/CN208078861U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418392A (en) * | 2018-04-08 | 2018-08-17 | 浙江长城搅拌设备股份有限公司 | A kind of permanent-magnet sealing transmission device |
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