CN2340068Y - Large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism - Google Patents
Large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism Download PDFInfo
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- CN2340068Y CN2340068Y CN 98236294 CN98236294U CN2340068Y CN 2340068 Y CN2340068 Y CN 2340068Y CN 98236294 CN98236294 CN 98236294 CN 98236294 U CN98236294 U CN 98236294U CN 2340068 Y CN2340068 Y CN 2340068Y
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Abstract
The utility model discloses a large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism which is composed of a permanent magnet and an outer magnetic circuit, wherein, the outer magnetic circuit of the magnetic mechanism is composed of a magnetic conduction frame which is made of magnetic conduction materials, and the magnetic conduction frame is closed around the direction of a channel of the magnetized object. The utility model is characterized in that when the gap space is enlarged, and the intensity of magnetic field is enhanced, the magnetic gradient and the degree of stability are further improved, fabrication cost and operation cost are further reduced, and no environmental contamination of magnet leakage exists. The large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism can satisfy the requirements of high gradient and high stability for the large magnet gap and the strong magnetic field in practical application occasions.
Description
The utility model relates to a kind of permanent-magnet mechanism with big magnetic gap, strong magnetic field and high gradient and stability, belongs to the applied magnetics technical field.
Need obtain the stable big magnetic gap and the high-intensity magnetic field of high gradient simultaneously in many application scenarios, the article of larger volume and big total amount or the magnetization of material are handled realizing, as industrial circle such as medicine, medical treatment, chemical industry and scientific research field that some are special.Particularly relate to the processing of the magnetic fertilizer of agricultural and chemical field over past ten years, require to have the core component of the magnetic mechanism of plant-scale big magnetic gap high-intensity magnetic field high gradient and high stability especially as its special-purpose magnetization process equipment.
Existing general magneto device, if adopt traditional permanent magnetic material manufacturing, then its magnetic field intensity is very low when big magnetic gap, sees Fig. 7, can not satisfy the basic demand of the big magnetic gap of needs, high-intensity magnetic field simultaneously.
The magnetic mechanism that adopts electromagnetic mode to make, owing to there is the big inherent characteristics of leakage field, effective magnetic energy of the electric flux of its input and output, the energy difference that just exists between its magnetic field intensity and the magnetic flux density is apart from huge especially, might be up to several magnitude, the magnetic field gradient of magnetic mechanism is very little, and the magnetic field gradient curve of general electromagnetic type mechanism is seen Fig. 8.We once manufactured experimently a kind of electromagnetic mechanism of paper tinsel formula winding in the early 1990s, were a kind of version of the most effective and magnetic field gradient maximum of magnetic field energy in the existing electromagnetic mechanism, magnetic field gradient curve such as Fig. 9 of its actual measurement.Facts have proved no matter the electromagnetic type magnetic mechanism is its magnetic flux density, or its magnetic field gradient, can not satisfy the requirement of the big magnetic gap of needs, high-intensity magnetic field simultaneously well.
The patent No. that the inventor once provided is the novel permanent magnetic formula magnetizer of ZL 91233308.1, owing to adopted Nd-Fe-B superpower permanet magnetic material to make the magnetic mechanism of big magnetic gap high-intensity magnetic field, its magnetic field intensity (magnetic flux density that is equivalent to electromagnetic mechanism) and magnetic field gradient are greatly improved than electromagnetic mechanism, as Fig. 4, be advantageously applied to the production occasion of magnetic fertilizer etc. and stood longer industrial practice.But because the version of the magneto magnetic mechanism of this method has adopted non-closed external magnetic circuit structure, its magnetic field energy that leaks is bigger than normal, and the magnetic field gradient in working magnetic gap space is less than normal.
The magnetic mechanism of above form of ownership has adopted horseshoe-shaped structure as shown in Figure 4 substantially, and this structure owing to have powerful gravitation between two magnetic poles, causes this horseshoe-shaped structure to become " cantilever beam " and has the problem of poor stability under the high-intensity magnetic field condition.
The purpose of this utility model is to overcome the deficiency and the limitation of prior art scheme, a kind of permanent-magnet mechanism with big magnetic gap, strong magnetic field and high gradient and stability is provided, it can further reduce leakage field, improve the magnetic field gradient in working magnetic gap space, thereby further improve the quality of magnetizing effect, improving the product that is magnetized.Because leakage field reduces, under the condition of same magnetic field requirement of strength, thereby the consumption that can also reduce valuable permanent magnetic material reduces manufacturing cost, and the environmental pollution level that leakage field can be caused simultaneously is reduced to almost nil.
The purpose of this utility model is to realize like this, this permanent-magnet mechanism with big magnetic gap, strong magnetic field and high gradient and stability, it comprises permanent magnet and external magnetic circuit, and the external magnetic circuit of magnetic mechanism (1) is by constituting at closed magnetic conduction framework on the thing channel direction that is magnetized that permeability magnetic material is made.
The external magnetic circuit of magnetic mechanism (1) employing permeability magnetic material is made for the closed type magnetic conduction framework of rectangle or circular or other shape, forms the close passage of the permanent magnet pole outside magnetic line of force; This framework can be to make or combine with permeability magnetic material integral body; Leave the working magnetic gap space that the thing that is magnetized can pass through between the inboard of the permanent magnetism magnetic pole of installing in this framework.The permeability magnetic material of making external magnetic circuit (1) can be electrician's soft iron or the higher ferrous material of other permeability; What make permanent magnet (2) can be NdFeB material.Permanent magnetism magnetic pole can be that the monoblock permanent magnetic material is made, and also can be to be connected to form the connection of its relevant CALCULATION OF PARAMETERS and permanent magnetic material, permeability magnetic material etc., the method that can take ZL 91233308.1 to provide by the polylith permanent magnetic material.Working magnetic gap (3) by inboard permanent magnet (2) formation of external magnetic circuit (1).
Advantage of the present utility model is that the magnetic field intensity of magnetic mechanism and gradient have characteristics as shown in figure 11, and more reasonable because magnetic mechanism has been eliminated " cantilever beam " structure, thereby has significantly improved the stability of magnetic mechanism.
The utility model is described in further detail below in conjunction with drawings and Examples.
The label of each parts correspondence is among the figure:
(1) magnetic mechanism external magnetic circuit, (2) permanent magnet, (3) working magnetic gap space thing passage that promptly is magnetized, (4) thing that is magnetized, (5) the thing conveyer belt that is magnetized.
Fig. 1 is the utility model structural representation;
Fig. 2 is the a-a cutaway view of Fig. 1;
Fig. 3 is the b-b cutaway view of Fig. 1;
Fig. 4 is non-closed external magnetic circuit structural representation;
Fig. 5 is that the magnetic mechanism of closed type external magnetic circuit rectangular configuration is used schematic diagram;
Fig. 6 is a closed type external magnetic circuit circular configuration schematic diagram, is the embodiment of closed type external magnetic circuit circular configuration;
Fig. 7 is the magnetic field intensity and the gradient curve figure of traditional permanent magnetic material magnetic mechanism;
Fig. 8 is the magnetic field intensity and the gradient curve figure of general electromagnetic type magnetic mechanism;
Fig. 9 is the magnetic field intensity and the gradient curve figure of the electromagnetic type magnetic mechanism of paper tinsel formula winding;
Figure 10 is the magnetic field intensity and the gradient curve figure of the non-closed external magnetic circuit structure magnetic mechanism of permanent magnetism;
Figure 11 is the magnetic field intensity and the gradient curve figure of the closed external magnetic circuit structure of the utility model novel permanent magnetic magnetic mechanism;
In Fig. 7～11, the x axle is represented the working magnetic gap space center axle along the material channel direction, and its initial point is a working magnetic gap space center point; Y axle: represent magnetic flux density for the electromagnetic type magnetic mechanism; Represent magnetic field intensity for the magneto magnetic mechanism, be equivalent to the magnetic flux density of electromagnetic type magnetic mechanism.Wherein Fig. 8 promptly imports under the equal electrical power condition in identical magnetic field intensity with Fig. 9 and compares, and Figure 10 compares under identical permanent magnetic material parameter condition with Figure 11.
Another comparison condition of Fig. 7～11 is all to have equal cost.
Adopt the closed type external magnetic circuit magnetic mechanism of circular configuration, the other parts of device are same as the previously described embodiments.
Realize that the purpose of this utility model is not limited to the foregoing description.
Novel permanent magnetic formula magnetic mechanism of the present utility model, its advantage is when increasing its magnetic gap space and strengthening magnetic field intensity, magnetic field gradient and stability further improve, cost and operating cost further reduce, the magnetic leakage free environmental pollution can be satisfied practical application needs high stable and the big magnetic gap of high gradient and the requirement of high-intensity magnetic field simultaneously.
Claims (3)
1, a kind of permanent-magnet mechanism with big magnetic gap, strong magnetic field and high gradient and stability, it comprises permanent magnet and external magnetic circuit, it is characterized in that: the external magnetic circuit of magnetic mechanism is by constituting at closed magnetic conduction framework on the thing channel direction that is magnetized that permeability magnetic material is made.
2, magnetic mechanism according to claim 1 is characterized in that, external magnetic circuit employing permeability magnetic material is made for the closed type magnetic conduction framework of rectangle or circular or other shape, forms the close passage of the permanent-magnet pole outside magnetic line of force; This framework can be to make or combine with permeability magnetic material integral body; Leave the working magnetic gap space that material to be machined can pass through between the inboard of the permanent magnetism magnetic pole of installing in this framework.
3, magnetic mechanism according to claim 1 and 2 is characterized in that, the permeability magnetic material of making external magnetic circuit can be electrician's soft iron or the higher ferrous material of other permeability; What make permanent magnet can be NdFeB material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98236294 CN2340068Y (en) | 1998-08-31 | 1998-08-31 | Large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98236294 CN2340068Y (en) | 1998-08-31 | 1998-08-31 | Large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2340068Y true CN2340068Y (en) | 1999-09-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98236294 Expired - Fee Related CN2340068Y (en) | 1998-08-31 | 1998-08-31 | Large-magnet-gap strong magnetic field high-gradient high-stability permanent-magnet type magnetic mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2340068Y (en) |
-
1998
- 1998-08-31 CN CN 98236294 patent/CN2340068Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |