CN201869138U - Magnetic suspension mechanism for high-speed revolving device - Google Patents
Magnetic suspension mechanism for high-speed revolving device Download PDFInfo
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- CN201869138U CN201869138U CN2010205799605U CN201020579960U CN201869138U CN 201869138 U CN201869138 U CN 201869138U CN 2010205799605 U CN2010205799605 U CN 2010205799605U CN 201020579960 U CN201020579960 U CN 201020579960U CN 201869138 U CN201869138 U CN 201869138U
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- static element
- magnetic
- revolving part
- high speed
- rotating unit
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Abstract
The utility model provides a magnetic suspension mechanism for a high-speed revolving device. The magnetic suspension mechanism for the high-speed revolving device comprises a plurality of magnetic bodies, wherein the magnetic bodies are respectively arranged on the adjacent surfaces between a revolving part and a stationary part of the high-speed revolving device or between the stationary parts, the magnetic bodies on any two adjacent surfaces are oppositely arranged in a homopolar way, a plurality of magnetic bodies form at least two groups of magnetic components, and the magnetic bodies on any two adjacent surfaces form a group of magnetic components. The magnetic suspension mechanism for the high-speed revolving device utilizes the repulsion force between two magnetic bodies in the magnetic components to ensure the two contact parts to keep a certain clearance, so as to avoid abrasion caused by mutual friction due to operation or vibration of the contact parts; meanwhile, the repulsion force between two magnetic bodies in the magnetic components can be partially counteracted with the axial force of the bearing, so that the using performance of the bearing is ensured, and the load of equipment maintenance is reduced.
Description
Technical field
The utility model relates to the anti-wear technology of plant equipment, particularly a kind of magnetic suspension force mechanism that is used for high speed rotating unit.
Background technology
In the plurality of devices (as pulper, heat dispersion machine, various fiberizer, pressurized screen etc.) of paper industry, a common mechanical equivalent of light feature is all arranged: during equipment operation, bearing is bearing radial force not only, also bears axial force simultaneously.At these characteristics, when Machine Design, have to select to bear the bearing of two kinds of power simultaneously, for example select conical bearing for use, or cylindrical bearing and thrust bearing combination, but the rotating speed that this dual mode all can make bearing adapt to reduces greatly, when selecting conical bearing for use, for onesize bearing, conical bearing is compared with cylindrical bearing, about stress performance decline 10%-30%, thereby cause the life-span of bearing short, maintenance load increases, and particularly for high-power, high-revolving equipment, often needs to select for use expensive bearing could guarantee the normal operation of equipment.Another kind of situation is, in paper making equipment, for example pressurized screen, stock pump etc., there is a little gap between rotating part and the static element, when equipment operation, because the axially loaded reason of unbalanced, cause easily and have local contact of moment between dynamic and static, make equipment produce bigger noise, equipment attrition increases, and it is frequent to make equipment part change.Therefore, do not adopt bearing to bear the equipment axially loaded, select a kind of end play that both kept, can bear the method for axial force again, to the normal operation of many plant equipment, the useful life and the minimizing maintenance load that prolong equipment have bigger meaning.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of magnetic suspension force mechanism that is used for high speed rotating unit is provided, this mechanism structure is simple, can effectively reduce two frictions that contact between the parts in the high speed rotating unit, also effectively reduce the axially loaded of high speed rotating unit middle (center) bearing.
The utility model is achieved through the following technical solutions: a kind of magnetic suspension force mechanism that is used for high speed rotating unit, comprise a plurality of magnetics, each magnetic is located at respectively on the revolving part and each adjacent surface between static element or static element and the static element of high speed rotating unit, magnetic homopolarity on any two adjacent surfaces is oppositely arranged, a plurality of magnetics are formed at least two group magnet assemblies, and the magnetic on any two adjacent surfaces is formed one group of magnet assembly.
In the said structure, described magnetic is a circular ring structure, is located on the end face of revolving part or static element, and magnetic connects by screw or bonding mode is fixed on the end face of revolving part or static element.
Described magnetic is permanent magnet or the magnet that magnetizes with coil.
As a kind of preferred version, described a plurality of magnetic is formed two groups of magnet assemblies, according to the outer force direction on the rotating shaft, be provided with first static element, second static element and revolving part on the rotating shaft of high speed rotating unit successively, first static element is provided with the first relative magnet assembly of S-S homopolarity with adjacent surface between second static element, and second static element is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part.Wherein, described first static element is a bearing pedestal, and second static element is a stirred vessel, and revolving part is a paddle.Repulsive force in described first magnet assembly between two magnetics is F
1, the repulsive force in second magnet assembly between two magnetics is F
2, the outer active force on the rotating shaft is F, F
2=F
1+ F, in actual applications, F
2≈ F
1, F
1Be far longer than F, so F can ignore.
As another kind of preferred version, described a plurality of magnetic is formed two groups of magnet assemblies, according to the outer force direction on the rotating shaft, be provided with first static element, revolving part and second static element on the rotating shaft of high speed rotating unit successively, first static element is provided with the first relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part, and revolving part is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between second static element.Wherein, described first static element and second static element are for being located at the bearing pedestal of rotating shaft terminal respectively, and revolving part is the shaft shoulder parts of rotating shaft.Repulsive force in described first magnet assembly between two magnetics is F
1, the repulsive force in second magnet assembly between two magnetics is F
2, the outer active force on the rotating shaft is F, F
2=F
1+ F, in actual applications, F
2≈ F
1, F
1Be far longer than F, so F can ignore.
When the magnetic suspension force mechanism that originally is used for high speed rotating unit uses, its principle is: the basic physics principle that utilizes the mutual exclusion of magnetic homopolarity, magnetic is set respectively on the contact-making surface of two parts that contact in high speed rotating unit, two magnetic homopolarities are oppositely arranged, utilize two repulsive forces between the magnetic to make two parts that contact keep the gap, prevent the wearing and tearing that produce because of friction; Simultaneously, because the outer active force on the rotating shaft makes not only radial force of bearing, also axially loaded, the repulsive force that magnetic produces can be offset with axially loaded, reduces shaft strength, makes things convenient for the selection of Machine Design middle (center) bearing.
Compared with prior art, the utlity model has following beneficial effect:
1, the magnetic suspension force mechanism that originally is used for high speed rotating unit, by at least two group magnet assemblies are set on high speed rotating unit, utilize the repulsive force between interior two magnetics of magnet assembly, make contacted two parts can keep certain clearance, friction and produce wearing and tearing mutually when avoiding running of contacted parts or vibrations, also make the axially loaded balance of each parts, prevent to produce each other local contact of moment, reduce noise, reduce equipment attrition, thereby effectively prolong the useful life of equipment and reduce maintenance cost.
When 2, this magnetic suspension force mechanism is installed on the bearing pedestal of rotating shaft, when rotating shaft is subjected to external force effect rotation, some can offset repulsive force between interior two magnetics of magnet assembly with the axially loaded of bearing, make and only have radial force on the bearing, when bearing runs up, can guarantee the serviceability of bearing preferably, reduce the maintenance capacity of equipment; In addition, in the design process of equipment components, only consider the radial force of bearing, also comparatively simple to the selection of bearing.
3, the magnetic suspension force mechanism that originally is used for high speed rotating unit, its principle and simple in structure except applying to the various kinds of equipment of paper industry, also can well apply to the high speed rotating unit of near field, and the scope of application is wider.
Description of drawings
Fig. 1 is this magnetic suspension force mechanism be used to keep contacting principle schematic in gap between the parts.
Fig. 2 be among Fig. 1 local each magnetic that amplifies sequential schematic is set.
Fig. 3 is the principle schematic that this magnetic suspension force mechanism is used to eliminate the bearing axially loaded.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment one
A kind of magnetic suspension force mechanism that is used for high speed rotating unit of present embodiment, comprise a plurality of magnetics, each magnetic is located at respectively on the revolving part and each adjacent surface between static element or static element and the static element of high speed rotating unit, magnetic homopolarity on any two adjacent surfaces is oppositely arranged, a plurality of magnetics are formed at least two group magnet assemblies, and the magnetic on any two adjacent surfaces is formed one group of magnet assembly.
In the said structure, magnetic is a circular ring structure, is located on the end face of revolving part or static element, and magnetic connects by screw or bonding mode is fixed on the end face of revolving part or static element.Magnetic is permanent magnet or the magnet that magnetizes with coil.
The magnetic suspension force mechanism of present embodiment is used in the agitating device, be mainly used in and keep the gap between the revolving part and static element on the agitating device, its structure as shown in Figure 1, a plurality of magnetics 1 are formed two groups of magnet assemblies, according to the outer force direction on the rotating shaft 2, be provided with first static element 3 on the rotating shaft 2 of high speed rotating unit successively, second static element 4 and revolving part 5, as shown in Figure 2, first static element 3 is provided with the first relative magnet assembly of S-S homopolarity with adjacent surface between second static element 4, and second static element 4 is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part 5.Wherein, first static element 3 is a bearing pedestal, and second static element 4 is a stirred vessel, and revolving part 5 is a paddle.Repulsive force in first magnet assembly between two magnetics is F
1, the repulsive force in second magnet assembly between two magnetics is F
2, the outer active force on the rotating shaft is F, F
2=F
1+ F, in actual applications, F
2≈ F
1, F
1Be far longer than F, so F can ignore.
When the magnetic suspension force mechanism of present embodiment uses, its principle is: when rotating shaft 2 driven rotary parts 5 rotate, there is a very little gap between the revolving part 5 and second static element 4, when rotating, revolving part 5 with second static element 4 local contact of moment taken place easily, owing to friction produces bigger wearing and tearing, after the magnetic suspension force mechanism of present embodiment is set, utilize the basic physics principle of magnetic homopolarity mutual exclusion, two groups of magnet assemblies are set, two magnetic homopolarities in each magnet assembly are oppositely arranged, utilize two repulsive forces between the magnetic to make the revolving part 5 and second static element 4, keep certain clearance between second static element 4 and first static element 3, prevent the wearing and tearing that produce because of friction; Simultaneously, the repulsive force between interior two magnetics of first magnet assembly also can be offset the axially loaded of rotating shaft upper bearing (metal) 6, improves the serviceability of bearing 6.
Embodiment two
A kind of magnetic suspension force mechanism that is used for high speed rotating unit of present embodiment, comprise a plurality of magnetics, each magnetic is located at respectively on the revolving part and each adjacent surface between static element or static element and the static element of high speed rotating unit, magnetic homopolarity on any two adjacent surfaces is oppositely arranged, a plurality of magnetics are formed at least two group magnet assemblies, and the magnetic on any two adjacent surfaces is formed one group of magnet assembly.
In the said structure, magnetic is a circular ring structure, is located on the end face of revolving part or static element, and magnetic connects by screw or bonding mode is fixed on the end face of revolving part or static element.Magnetic is permanent magnet or the magnet that magnetizes with coil.
The magnetic suspension force mechanism of present embodiment is applied on the high-speed rotating shaft, be mainly used in the axially loaded of eliminating bearing, as shown in Figure 3, a plurality of magnetics 1 are formed two groups of magnet assemblies, according to the outer force direction on the rotating shaft 2, be provided with first static element 3, revolving part 5 and second static element 4 on the rotating shaft 2 of high speed rotating unit successively, first static element 3 is provided with the first relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part 5, and revolving part 5 is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between second static element 4.Wherein, first static element 3 and second static element 4 are for being located at the bearing pedestal of rotating shaft terminal respectively, and revolving part 5 is the shaft shoulder parts of rotating shaft.Repulsive force in first magnet assembly between two magnetics is F
1, the repulsive force in second magnet assembly between two magnetics is F
2, the outer active force on the rotating shaft is F, F
2=F
1+ F, in actual applications, F
2≈ F
1, F
1Be far longer than F, so F can ignore.
When the magnetic suspension force mechanism of present embodiment uses, its principle is: rotating shaft 2 effect of active force outside is down during rotation, bearing 6 is radial force not only, also axially loaded, this has just reduced the serviceability of bearing 6, after the magnetic suspension force mechanism of present embodiment is set, utilize the basic physics principle of magnetic homopolarity mutual exclusion, two groups of magnet assemblies are set, two magnetic homopolarities in each magnet assembly are oppositely arranged, part repulsive force between interior two magnetics of first magnet assembly has been offset the axially loaded of rotating shaft upper bearing (metal) 6, improves the serviceability of bearing 6; Simultaneously, the repulsive force in first magnet assembly and second magnet assembly between the magnetic also makes to win and keeps certain clearance between static element 3 and revolving part 5, revolving part 5 and second static element 4, avoids the wearing and tearing that produce because of friction.
As mentioned above, just can realize the utility model preferably, the foregoing description is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be that all equalizations of being done according to the utility model content change and modification, all contained by the utility model claim scope required for protection.
Claims (7)
1. the magnetic suspension force mechanism that is used for high speed rotating unit, it is characterized in that, comprise a plurality of magnetics, each magnetic is located at respectively on the revolving part and each adjacent surface between static element or static element and the static element of high speed rotating unit, magnetic homopolarity on any two adjacent surfaces is oppositely arranged, a plurality of magnetics are formed at least two group magnet assemblies, and the magnetic on any two adjacent surfaces is formed one group of magnet assembly.
2. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 1, it is characterized in that, described magnetic is a circular ring structure, is located on the end face of revolving part or static element, and magnetic connects by screw or bonding mode is fixed on the end face of revolving part or static element.
3. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 1, it is characterized in that described magnetic is permanent magnet or the magnet that magnetizes with coil.
4. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 1, it is characterized in that, described a plurality of magnetic is formed two groups of magnet assemblies, be provided with first static element, second static element and revolving part on the rotating shaft of high speed rotating unit successively, first static element is provided with the first relative magnet assembly of S-S homopolarity with adjacent surface between second static element, and second static element is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part.
5. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 4, it is characterized in that described first static element is a bearing pedestal, second static element is a stirred vessel, and revolving part is a paddle.
6. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 1, it is characterized in that, described a plurality of magnetic is formed two groups of magnet assemblies, be provided with first static element, revolving part and second static element on the rotating shaft of high speed rotating unit successively, first static element is provided with the first relative magnet assembly of N-N homopolarity with adjacent surface between the revolving part, and revolving part is provided with the second relative magnet assembly of N-N homopolarity with adjacent surface between second static element.
7. according to the described magnetic suspension force mechanism that is used for high speed rotating unit of claim 6, it is characterized in that described first static element and second static element are for being located at the bearing pedestal of rotating shaft terminal respectively, revolving part is the shaft shoulder parts of rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205799605U CN201869138U (en) | 2010-10-26 | 2010-10-26 | Magnetic suspension mechanism for high-speed revolving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205799605U CN201869138U (en) | 2010-10-26 | 2010-10-26 | Magnetic suspension mechanism for high-speed revolving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869138U true CN201869138U (en) | 2011-06-15 |
Family
ID=44140280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205799605U Expired - Fee Related CN201869138U (en) | 2010-10-26 | 2010-10-26 | Magnetic suspension mechanism for high-speed revolving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201869138U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982937A (en) * | 2010-10-26 | 2011-03-02 | 华南理工大学 | Magnetic suspension force mechanism for high-speed rotating device |
| CN111233182A (en) * | 2020-02-08 | 2020-06-05 | 苏州才豪电子科技有限公司 | Heavy metal waste residue processing apparatus based on solidification principle |
-
2010
- 2010-10-26 CN CN2010205799605U patent/CN201869138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982937A (en) * | 2010-10-26 | 2011-03-02 | 华南理工大学 | Magnetic suspension force mechanism for high-speed rotating device |
| CN111233182A (en) * | 2020-02-08 | 2020-06-05 | 苏州才豪电子科技有限公司 | Heavy metal waste residue processing apparatus based on solidification principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131026 |