Fine-grain nanocrystalline homogenization magnetic field stirring crystallizer capable of realizing accompanying ecological cold-water-free system

Abstract

The utility model discloses a fine-grain nanocrystalline homogenization magnetic field stirring crystallizer capable of achieving an ecological cold-water-free accompanying system, and relates to the technical field of non-ferrous metal casting, the fine-grain nanocrystalline homogenization magnetic field stirring crystallizer comprises a fixed stirring assembly and a movable stirring assembly, and the fixed stirring assembly comprises a plurality of fixed coils evenly distributed on the periphery of the crystallizer; the movable stirring assembly comprises a plurality of movable coils evenly distributed on the periphery of the fixed stirring assembly, the movable coils and the fixed coils are distributed in an included angle mode, and the movable stirring assembly is configured to rotate and move relative to the fixed stirring assembly, so that the movable coils can be correspondingly matched with the fixed coils in the local area. Composite magnetic field distribution is formed in a corresponding local area, so that the magnetic field distribution condition of the local area is accurately adjusted, local directional stirring of the melt is achieved, the stirring effect of the melt is accurately controlled, it is ensured that the melt in each area can be uniformly stirred, and therefore the temperature cooling uniformity is improved, and the crystal growth quality and stability are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal casting technology, specifically to a stirring device for a crystallizer. Background Technology

[0002] Crystallizers control the size and shape of crystals by adjusting parameters such as the temperature, concentration, and stirring speed of the melt, thereby ensuring crystal quality and stability. However, uneven temperature of the melt within the crystallizer can lead to inconsistent crystal growth rates, which in turn affects crystal quality. In existing technologies, magnetic stirrers are typically used to stir the melt within the crystallizer to improve the temperature uniformity of the melt.

[0003] Chinese patent application CN 118926511 A discloses a magnetic field stirring device, comprising: a base and a circular iron block disposed on the top of the base, wherein a second coil is wound around the outer wall of the circular iron block; an adjustment mechanism located between the base and the circular iron block for expanding the magnetic field range; and amplifiers located on both sides of the circular iron block for enhancing the magnetic field around the adjusted circular iron block. The amplifiers include arc-shaped iron blocks disposed on both sides of the circular iron block. By setting the adjustment mechanism, the output end of the drive motor drives the one-way threaded screw to rotate, thereby driving the slider to move the circular iron block laterally, thereby adjusting the position of the circular iron block, thereby expanding the annular magnetic field range formed by multiple circular iron blocks and improving the stirring effect.

[0004] However, existing magnetic stirring devices uniformly regulate the magnetic field of the melt in the crystallizer and uniformly stir the melt distributed in various areas of the crystallizer. This results in poor melt flow in some areas, which affects temperature uniformity. Consequently, the crystals grow excessively in some areas and insufficiently in others, leading to poor crystal quality and stability.

[0005] Therefore, how to effectively improve the reliability of the stirring device, realize the local directional stirring of the melt, so as to accurately control the stirring effect of the melt, improve the temperature uniformity, and ensure the quality and stability of the crystal has become an urgent problem to be solved in this field. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fine-crystal and nano-crystal homogenizing magnetic stirring crystallizer that can perform localized directional stirring of the melt, effectively improve temperature uniformity, and realize an ecological waterless system.

[0007] To achieve the above objectives, this utility model provides a fine-crystal / nano-crystal homogenizing magnetic field stirred crystallizer that enables a waterless, eco-friendly system, used in conjunction with a crystallizer, including...

[0008] A fixed stirring assembly, comprising several fixed coils evenly distributed around the periphery of the crystallizer.

[0009] A movable stirring assembly includes several movable coils evenly distributed around a fixed stirring assembly. The movable coils are distributed at an angle to the fixed coils. The movable stirring assembly is configured to rotate and move relative to the fixed stirring assembly, so that at least one movable coil can correspond to and cooperate with any fixed coil to form a composite magnetic field distribution.

[0010] Furthermore, the fixed stirring assembly includes several fixed coil groups evenly distributed around the crystallizer, and each fixed coil group includes several fixed coils distributed along the height direction of the crystallizer.

[0011] Furthermore, the fixed stirring assembly also includes a fixed support disposed at the bottom of the crystallizer, and the fixed coil assembly is disposed on the fixed support via a fixed support rod.

[0012] Furthermore, the fixed coils in several fixed coil groups cooperate to form a grid distribution.

[0013] Furthermore, the movable stirring assembly includes an annular rotating plate disposed around the fixed support. The annular rotating plate is composed of several fan-shaped rotating plates, and each fan-shaped rotating plate is provided with a movable coil.

[0014] Furthermore, the fixed coils are vertically distributed, while the movable coils are horizontally distributed.

[0015] Furthermore, the movable stirring assembly also includes a movable support, the movable support having a central base plate for connecting with the fixed support, and a peripheral annular drive base plate that is slidably connected to the central base plate.

[0016] Furthermore, each sector-shaped rotating plate is connected to the outer annular drive base plate via a vertical telescopic device.

[0017] Furthermore, the crystallizer is equipped with a temperature detection device.

[0018] Furthermore, the outer wall of the crystallizer is provided with a heat insulation layer.

[0019] This invention provides a fine-crystal and nano-crystal homogenizing magnetic field stirred crystallizer that enables a waterless system with accompanying ecology. The crystallizer uses fixed coils distributed around its periphery in a fixed stirring assembly to generate a magnetic field that uniformly stirs the molten liquid within the crystallizer. Simultaneously, the moving stirring assembly rotates and moves relative to the fixed stirring assembly, allowing the moving coils to correspond and coordinate with the fixed coils in specific local areas. This creates a composite magnetic field distribution in the corresponding local areas, precisely adjusting the magnetic field distribution to achieve localized directional stirring of the molten liquid. This allows for precise control of the stirring effect, improved temperature uniformity, and ensures crystal quality and stability. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 A front view schematic diagram of a fine-crystal nanocrystal homogenizing magnetic stirring crystallizer that enables a waterless system with accompanying ecology, provided by this utility model.

[0022] Figure 2 A top view of the fine-crystal nanocrystal homogenizing magnetic stirring crystallizer that enables a waterless system with accompanying ecology, provided by this utility model;

[0023] Figure 3 and Figure 4 This is a schematic diagram of the structure of the fixed stirring assembly in this utility model;

[0024] Figure 5 and Figure 6 This is a schematic diagram of the structure of the movable stirring component in this utility model;

[0025] Figure 7 and Figure 8 This is a schematic diagram of the operation of the movable stirring component in this utility model;

[0026] Figure 9 This is a schematic diagram of the cooperation structure between the fixed stirring component and the movable stirring component in this utility model;

[0027] Figure 10 and Figure 11 This is a schematic diagram of the working state of the mobile stirring component in this utility model;

[0028] Figure 12 This is a schematic diagram of the crystallizer in this utility model.

[0029] Figure label:

[0030] 100. Fixed stirring assembly; 110. Fixed coil assembly; 111. Fixed coil; 120. Fixed support; 121. Connecting rod; 130. Fixed support rod;

[0031] 220. Moving stirring assembly; 210. Annular rotating plate; 211. Fan-shaped rotating plate; 220. Moving coil; 230. Moving support; 231. Central base plate; 232. Outer annular drive base plate; 240. Vertical telescopic device;

[0032] 300. Crystallizer; 310. Temperature detection device; 320. Thermal insulation layer. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0034] See Figure 1 and Figure 2 The illustration shows an example of a fine-crystal nanocrystal homogenizing magnetic stirring crystallizer provided by this utility model, which can realize a waterless system with accompanying ecology.

[0035] As shown in the figure, the fine-crystal nanocrystal homogenization magnetic stirring crystallizer that enables the implementation of a waterless system with accompanying ecology, in this example, works in conjunction with the crystallizer 300 and mainly includes a fixed stirring component 100 and a moving stirring component 200.

[0036] The fixed stirring assembly 100 includes several fixed coils 111 evenly distributed around the crystallizer 300. The movable stirring assembly 200 includes several movable coils 220 evenly distributed around the fixed stirring assembly 100. The movable coils 111 and the fixed coils 220 are distributed at an angle. The movable stirring assembly 200 is configured to rotate and move relative to the fixed stirring assembly 100, so that at least one movable coil 220 can correspond to and cooperate with any fixed coil 111 to form a composite magnetic field distribution. This allows for precise adjustment of the magnetic field distribution in a local area, achieving localized directional stirring of the melt. It can precisely control the stirring effect of the melt, improve temperature uniformity, and ensure crystal quality and stability.

[0037] Combination Figure 3 and Figure 4 The fixed stirring assembly 100 is composed of several fixed coil groups 110. The fixed coil groups 110 are evenly distributed around the crystallizer 300, and each fixed coil group 110 includes several fixed coils 111 distributed along the height direction of the crystallizer 300, so that the several fixed coils 111 cooperate to form a vertically distributed fixed coil group 110, which can stir the melt in the crystallizer 300.

[0038] Preferably, the vertical distribution structure of the fixed coils 111 in each fixed coil group 110 is the same, so that the fixed coils 111 in several fixed coil groups 110 cooperate to form a grid distribution and are evenly distributed around the crystallizer 300, which can uniformly stir the melt in the crystallizer 300.

[0039] Furthermore, the fixed stirring assembly 100 also includes a fixed support 120, which is disposed at the bottom of the crystallizer 300. Each fixed coil group 110 is respectively disposed on the fixed support 120 via a fixed support rod 130. Specifically, several fixed coils 111 in the fixed coil group 110 are connected in series via the fixed support rod 130, and the end of the fixed support rod 130 is fixed to the fixed support 120 to improve the stability of the fixed stirring assembly 100 and the crystallizer 300, so that the fixed stirring assembly 100 can stably and continuously stir the melt in the crystallizer 300.

[0040] In some embodiments, the fixed support rod 130 may be configured as a hollow pipe, and an electrical circuit may be arranged inside the fixed support rod 130, such that the electrical circuit is connected to a plurality of fixed coils 111 in the fixed coil group 110. By means of the law of electromagnetic induction, the fixed coils 111 generate a magnetic field when energized, so that the magnetic field interacts with the melt in the crystallizer 300, promoting the accelerated movement and collision of ions in the melt, thereby stirring the melt.

[0041] Combination Figure 3 and Figure 4 As an example, in this instance, eight fixed coil groups 110 are evenly distributed around the crystallizer 300, and three fixed coils 111 are evenly distributed along the height direction of the crystallizer 300 in each fixed coil group 110. This allows the eight fixed coil groups 110 to work together to form eight groups of three-layer grid-like fixed coils 111 around the crystallizer 300, which cover the entire periphery of the crystallizer 300, thereby uniformly stirring the melt in each area of ​​the crystallizer 300.

[0042] The fixed stirring assembly 100 thus formed achieves uniform stirring of the molten liquid in each region of the crystallizer 300 through the cooperation of the uniformly distributed fixed coil group 110 and fixed coil 111.

[0043] Furthermore, the fixed stirring assembly 100 uniformly stirs the molten liquid in each area of ​​the crystallizer 300. Factors such as the structure of the crystallizer 300 itself or vibration can easily lead to uneven stirring of the molten liquid in local areas such as the nozzle area, meniscus area and foot area, resulting in uneven molten liquid temperature. This can easily lead to local supersaturation accumulation, causing crystals in the crystallizer 300 to grow excessively in some areas and insufficiently in others, affecting the quality and uniformity of the crystals.

[0044] To improve the temperature uniformity of the melt within the crystallizer 300 and ensure the quality and uniformity of the crystals, this stirring device also includes a movable stirring component 200. The movable stirring component 200 can cooperate with the fixed stirring component 100 to precisely control the stirring effect in local areas, realize local directional stirring of the melt, and ensure that the melt in each area can be stirred evenly, thereby improving temperature uniformity.

[0045] Combination Figure 1 and Figure 2 Specifically, the movable stirring assembly 200 includes an annular rotating plate 210, which is disposed around the fixed support 120 of the fixed stirring assembly 100. A plurality of movable coils 220 are uniformly arranged on the annular rotating plate 210. By rotating and moving vertically around the fixed support 120, the annular rotating plate 210 can drive the movable coils 220 to move synchronously. In cooperation with a plurality of fixed coils 111 on the fixed support 120, a composite magnetic field is formed in a local area, thereby directional and fully stirring the melt in the corresponding area to improve the stirring effect and temperature uniformity.

[0046] Combination Figure 5 and Figure 6 Furthermore, the annular rotating plate 210 is composed of several sector-shaped rotating plates 211. The several sector-shaped rotating plates 211 surround the annular rotating plate 210, and each sector-shaped rotating plate 211 is provided with a movable coil 220, so that each sector-shaped rotating plate 211 can move independently vertically, so that the movable coil 220 can cooperate with any fixed coil 111 to form a composite magnetic field, thereby enabling directional stirring of the melt in any region of the crystallizer 330.

[0047] Combination Figure 7 and Figure 8 The annular rotating plate 210 and the sector rotating plate 211 thus formed cooperate with each other. The annular rotating plate 210 rotates around the fixed support 120, driving several sector rotating plates 211 to rotate synchronously. Each moving coil 220 corresponds to a fixed coil group 110. At the same time, each sector rotating plate 211 moves independently vertically, allowing each moving coil 220 to cooperate with any fixed coil 111 in the corresponding fixed coil group 110. This allows the moving coil 220 to cooperate with any fixed coil 111 in the grid distribution, forming a composite magnetic field in the local area of ​​the corresponding fixed coil 111. This allows for precise control of the molten liquid in that local area, enabling directional stirring and improving temperature uniformity.

[0048] In order to achieve the coordinated movement of the annular rotating plate 210 and the fan-shaped rotating plate 211, the movable stirring assembly 200 also includes a movable support 230. The movable support 230 is configured to be fixedly connected to the fixed support 120 and slidably connected to the annular rotating plate 210, thereby ensuring the coordination stability of the fixed stirring assembly 100 and the movable stirring assembly 200.

[0049] Combination Figure 6 and Figure 9 Specifically, the movable support 230 has a central base plate 231 in the middle, and the fixed support 120 is fixed to the central base plate 231 by a connecting rod 121. Furthermore, the movable support 230 has an outer ring drive base plate 232 that is slidably connected to the central base plate 231, and each sector rotating plate 211 in the ring rotating plate 210 is connected to the outer ring drive base plate 232 by a vertical telescopic device 240.

[0050] In this way, the annular rotating plate 210 is supported on the outer annular driving base plate 232 by the vertical telescopic device 240, and the fixed support 120 is supported on the middle base plate 231 by the connecting rod 121, so that the annular rotating plate 210 can be distributed around the fixed support 120, thereby enabling the movable coil 220 to cooperate stably with the fixed coil group 110.

[0051] Meanwhile, the outer ring drive base plate 232 rotates around the central base plate 231, which can drive the ring rotating plate 210 to rotate synchronously around the fixed support 120, so as to drive the moving coil 220 on each sector rotating plate 211 to rotate synchronously, so that each moving coil 220 corresponds to a different fixed coil group 110.

[0052] Here, a drive motor is provided at the bottom of the outer ring drive base plate 232 to drive the outer ring drive base plate 232 to rotate.

[0053] Combination Figure 7 Furthermore, each sector-shaped rotating plate 211 is connected to the outer annular drive base plate 232 via a vertical telescopic device 240. For example, the vertical telescopic device 240 can be constructed from an existing sliding screw or hydraulic rod, enabling the vertical telescopic device 240 to extend and retract, thereby driving the sector-shaped rotating plate 211 to move vertically. This causes the moving coil 220 on the sector-shaped rotating plate 211 to move vertically synchronously and correspond to any fixed coil 111 in the fixed coil group 110. This allows the magnetic fields generated by the moving coil 220 and the fixed coil 111 to cooperate with each other, forming a composite magnetic field in the local area. This precisely controls the control effect of the molten liquid in the local area, achieving directional stirring and improving temperature uniformity.

[0054] Combination Figure 7 , Figure 8 , Figure 10 and Figure 11Meanwhile, each sector-shaped rotating plate 211 can also achieve different vertical movement strokes through the corresponding vertical telescopic device 240, so that each moving coil 220 can correspond to the fixed coils 111 of different groups and different layers, thereby forming a composite magnetic field in multiple local areas, synchronously controlling the control effect of the melt in multiple local areas, and further improving the temperature uniformity.

[0055] To ensure that the composite magnetic field formed by the moving coil 220 and the fixed coil 111 can enhance the stirring effect of the molten liquid in the local area, the moving coil 220 and the fixed coil 111 are distributed at an angle, so that the magnetic field direction generated by the moving coil 220 and the fixed coil 111 when energized forms an angle. The magnetic field generated by the moving coil 220 and the fixed coil 111 forms a complex three-dimensional magnetic field through vector superposition, thereby significantly improving the stirring intensity.

[0056] As an example, in this instance, the fixed coil 111 is vertically distributed and the moving coil 220 is horizontally distributed. This allows the fixed coil 111 to generate a vertical magnetic field when energized, and the moving coil 220 to generate a horizontal magnetic field when energized. When the moving coil 220 moves to correspond with the fixed coil 111, the magnetic fields generated by the moving coil 220 and the fixed coil 111 are superimposed by vectors to form a composite magnetic field with an oblique direction. The oblique magnetic field can induce the Lorentz force to drive the molten liquid in this local area to move along a three-dimensional spiral trajectory. Compared with a single-direction magnetic field, the stirring range is wider.

[0057] Meanwhile, the combined magnetic field strength is a vector superposition of the magnetic field strengths of the moving coil 220 and the fixed coil 111. Compared with the single magnetic field generated by the moving coil 220 and the fixed coil 111, the combined magnetic field strength is significantly enhanced, which can significantly improve the stirring intensity and improve the temperature uniformity.

[0058] In some embodiments, the current ratio and phase difference between the movable coil 220 and the fixed coil 111 can be adjusted so that the composite magnetic field formed by the movable coil 220 and the fixed coil 111 is a dynamic rotating magnetic field, which effectively improves the stirring effect.

[0059] For example, by adjusting the current phase difference between the movable coil 220 and the fixed coil 111 to 90°, the movable coil 220 and the fixed coil 111 work together to form a rotating magnetic field with constant intensity but periodic change in direction, thereby further enhancing the stirring effect.

[0060] The movable stirring assembly 200 thus formed can rotate and move relative to the fixed stirring assembly 100, so that the movable coil 220 can be matched with any fixed coil 111 to form a composite magnetic field distribution in the corresponding local area, thereby precisely adjusting the magnetic field distribution in the local area, realizing local directional stirring of the melt, improving temperature uniformity, and ensuring crystal quality and stability.

[0061] Combination Figure 12 In order to improve the stirring effect and control the stirring of specific local areas with uneven temperature, the crystallizer 300 is equipped with a temperature detection device 310. The temperature detection device 310 is configured to detect the temperature of different areas in the crystallizer 300, thereby controlling the movement state of the moving stirring component 200 accordingly to control the stirring of the local area.

[0062] As a preferred configuration, the temperature detection device 310 is composed of existing distributed optical fiber temperature sensors. The distributed optical fiber temperature sensors are spirally distributed on the inner wall of the crystallizer 300 to measure the temperature of multiple areas within the crystallizer 300, thereby controlling the stirring of areas with significantly uneven temperatures. The moving coil 220 is moved to cooperate with the fixed coil 111 in the local area to form a composite magnetic field, which directionally stirs the molten liquid in that local area.

[0063] Furthermore, the outer wall of the crystallizer 300 is also provided with a heat insulation layer 320. For example, the heat insulation layer 320 can be made of existing ceramic coating or glass to keep the internal temperature of the crystallizer 300 stable and unaffected by the heating of the peripheral moving coil 220 and the fixed coil 111, while ensuring that the temperature detection device 310 can detect the accurate temperature.

[0064] Meanwhile, unlike traditional water-cooled jackets, this insulation layer 320 is made of non-magnetic material, typically high-temperature resistant ceramic or glass, rather than the traditional copper jacket with internal cooling water. This allows the insulation layer 320 to be thinner, effectively improving magnetic conductivity and thus increasing the utilization efficiency of the magnetic field. It also reduces energy waste caused by the cooling water carrying away heat, thereby saving production costs.

[0065] The present invention provides a fine-crystal and nano-crystal homogenizing magnetic field stirred crystallizer that enables a waterless system with accompanying ecology. Through the cooperation of a fixed stirring component 100 and a movable stirring component 200, the molten liquid in the crystallizer 300 is uniformly stirred by a fixed coil 111. At the same time, the movable stirring component 200 rotates and moves relative to the fixed stirring component 100, so that the movable coil 220 can correspond to the fixed coil 111 in a local area, forming a composite magnetic field distribution in the corresponding local area. This allows for precise adjustment of the magnetic field distribution in the local area, thereby achieving localized directional stirring of the molten liquid. It can precisely control the stirring effect of the molten liquid, improve temperature uniformity, and ensure crystal quality and stability.

[0066] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic stirring crystallizer for homogenizing fine-crystal and nano-crystal particles in a water-free system with accompanying ecosystem, used in conjunction with a crystallizer, characterized in that, include A fixed stirring assembly, comprising several fixed coils evenly distributed around the periphery of the crystallizer. A movable stirring assembly includes several movable coils evenly distributed around a fixed stirring assembly. The movable coils are distributed at an angle to the fixed coils. The movable stirring assembly is configured to rotate and move relative to the fixed stirring assembly, so that at least one movable coil can correspond to and cooperate with any fixed coil to form a composite magnetic field distribution.

2. The fine-crystal / nano-crystal homogenizing magnetic stirring crystallizer with an accompanying ecological cold water system as described in claim 1, characterized in that, The fixed stirring assembly includes several fixed coil groups evenly distributed around the crystallizer, and each fixed coil group includes several fixed coils distributed along the height direction of the crystallizer.

3. The fine-crystal and nano-crystal homogenizing magnetic stirring crystallizer with an accompanying ecological cold water system as described in claim 2, characterized in that, The fixed stirring assembly also includes a fixed support at the bottom of the crystallizer, and the fixed coil assembly is mounted on the fixed support via a fixed support rod.

4. The fine-crystal / nano-crystal homogenizing magnetic stirring crystallizer with accompanying ecological cold water system as described in claim 2, characterized in that, The fixed coils in several fixed coil groups work together to form a grid distribution.

5. The fine-crystal and nano-crystal homogenizing magnetic stirring crystallizer with an accompanying ecological cold water system as described in claim 3, characterized in that, The mobile stirring assembly includes an annular rotating plate disposed around the fixed support. The annular rotating plate is composed of several fan-shaped rotating plates, and each fan-shaped rotating plate is provided with a moving coil.

6. The fine-crystal / nano-crystal homogenizing magnetic stirring crystallizer with an accompanying ecological cold water system as described in claim 5, characterized in that, The fixed coils are arranged vertically, and the movable coils are arranged horizontally.

7. The fine-crystal nanocrystal homogenization magnetic stirring crystallizer with accompanying ecological cold water system according to claim 5, characterized in that, The mobile mixing assembly also includes a mobile support, the mobile support having a central base plate for connecting with the fixed support, and an outer annular drive base plate that is slidably connected to the central base plate.

8. The fine-crystal nanocrystal homogenizing magnetic stirring crystallizer with an accompanying ecological cold water system as described in claim 7, characterized in that, Each fan-shaped rotating plate is connected to the outer ring-shaped drive base plate via a vertical telescopic device.

9. The fine-crystal / nano-crystal homogenizing magnetic stirring crystallizer with accompanying ecological cold water system according to claim 1, characterized in that, The crystallizer is equipped with a temperature detection device.

10. The fine-crystal nanocrystal homogenization magnetic stirring crystallizer with accompanying ecological cold water system according to claim 9, characterized in that, The outer wall of the crystallizer is provided with a heat insulation layer.

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