Magnetic suspension stirrer and rotor structure thereof

Abstract

The utility model belongs to the technical field of magnetic suspension stirrers, and particularly relates to a magnetic suspension stirrer and a rotor structure thereof. The rotor structure comprises a rotor seat and a blade, the blade is connected with the rotor seat, at least one of the rotor seat and the blade is provided with a hanging part, and the hanging part can be in limiting fit with a mounting tool in the vertical downward direction. When the rotor structure is assembled, the mounting tool can be matched with the hanging part, at the moment, the hanging part and the mounting tool are in limiting fit in the vertical downward direction, the position of the rotor structure connected with the mounting tool can be changed by changing the position of the mounting tool, and therefore the rotor structure is located at the preset mounting position, that is, the mounting tool and the mounting tool are matched in the vertical downward direction. After the structure is adopted, installation personnel do not need to enter the material container, the size of the installation tool is small, the occupied space of the installation tool in the material container is very small, and therefore even if the space in the material container is narrow, the rotor structure can be conveniently and easily installed in the material container through the installation tool.

Description

Technical Field

[0001] The present application belongs to the technical field of magnetic levitation stirrers, and specifically relates to a magnetic levitation stirrer and a rotor structure thereof. Background Art

[0002] For pharmaceutical, biological, and chemical industries with demanding reaction environments, using traditional stirrers presents at least the following challenges: The mechanical bearings require physical contact, and friction-generated abrasive particles can enter the product, affecting its purity; friction-generated heat can significantly impact products prepared at low temperatures. Therefore, in these demanding environments, magnetic levitation stirrers are commonly used to eliminate these issues.

[0003] In the related art, the rotor structure of the magnetic levitation stirrer includes blades, and the rotor structure is installed in the material container to stir the material in the material container. However, in practice, it is difficult to install the rotor structure in the related art into the material container. Utility Model Content

[0004] The purpose of the present application is to provide a magnetic levitation agitator and a rotor structure thereof, which can solve the current problem of the difficulty of installing the rotor structure into a material container.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, the present application provides a rotor structure of a magnetic levitation agitator, including a rotor seat and blades, the blades being connected to the rotor seat, and at least one of the rotor seat and the blades being provided with a hanging portion, which can cooperate with an installation tool to limit the position in a vertical downward direction.

[0007] In an optional embodiment, the hanging portion is a hanging hole, the blade has a first blade surface and a second blade surface arranged opposite to each other, and the hanging hole passes through from the first blade surface to the second blade surface.

[0008] In an optional embodiment, the hanging hole extends to the first edge of the blade, and an entry port is formed at the first edge, and the installation tool can enter the hanging hole through the entry port.

[0009] In an optional embodiment, the first edge is located on one side of the blade along the radial direction of the rotor structure, and the hanging hole includes a first hole portion and a second hole portion, the first hole portion extends to the first edge and forms an entrance, the second hole portion is located above the first hole portion and is separated from the first edge, and a limiting portion is formed between the second hole portion and the first edge.

[0010] In an optional embodiment, the hanging hole includes a hanging hole section and a guide hole section distributed in sequence along the rotation direction of the rotor structure, and the guide hole section extends to the working surface of the blade;

[0011] Along the rotation direction, the cross-sectional area of ​​the guide hole section gradually increases.

[0012] In an optional embodiment, the blade has a first blade surface and a second blade surface that are arranged opposite to each other, and a flow hole is further provided on the blade, and the flow hole passes through from the first blade surface to the second blade surface.

[0013] In an optional embodiment, there are multiple blades, and the multiple blades are spaced apart along the circumference of the rotor seat, and the flow holes on each blade are located at different elevations.

[0014] In an optional embodiment, along the circumference of the rotor structure, the elevations of the flow holes on each blade increase sequentially.

[0015] In an optional embodiment, a groove is provided on the working surface of the blade;

[0016] The bottom wall of the groove is a curved surface, and / or at least one side wall of the groove is a curved surface.

[0017] In a second aspect, the present application provides a magnetic levitation stirrer comprising the above-mentioned rotor structure.

[0018] The beneficial technical effects of this application are as follows:

[0019] In the present application, at least one of the rotor seat and the blades is provided with a hanging portion. When assembling the rotor structure of the present application, the installation tool can be matched with the hanging portion. At this time, the hanging portion and the installation tool are matched with the upper limit in the vertical downward direction. In this way, changing the position of the installation tool can change the position of the rotor structure connected to it, so that the rotor structure is located in a preset installation position. That is to say, after adopting the structure of the present application, the installer does not need to enter the material container, and the installation tool is small in size and occupies very little space in the material container. Therefore, even if the space in the material container is small, the rotor structure can be conveniently and easily installed in the material container using the installation tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the rotor structure disclosed in the first embodiment of this application;

[0021] Figure 2 This is a schematic structural diagram of the rotor structure disclosed in the second embodiment of the present application;

[0022] Figure 3 For this application Figure 2 A magnified schematic diagram of point A in the middle;

[0023] Figure 4 This is a schematic structural diagram of the magnetic levitation stirrer disclosed in an embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of a magnetic levitation stirrer disclosed in another embodiment of the present application.

[0025] Description of reference numerals:

[0026] 100. Rotor seat; 200. Blade; 210. Hanging portion; 211. First hole portion; 212. Second hole portion; 220. Limiting portion; 230. Flow hole; 240. Groove; 250. Chamfer; 300. Stator structure. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0029] The magnetic levitation stirrer and its rotor structure provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0030] The inventors have discovered that the space inside the material container in the related art is relatively narrow, and the installation space provided for the installer is relatively small. The installer cannot enter the material container and can only use his hands to install the rotor structure to the outside of the stator structure. However, the range that the hands can reach is limited, so it is difficult to install the stator structure by hand. Or even if the installer can enter the material container, the space reserved for the installer inside the material container is also very small, which is not conducive to installing the rotor structure inside or outside the stator structure. In summary, it is difficult to install the rotor structure inside the material container.

[0031] like Figure 1 and Figure 3 As shown, the embodiment of the present application discloses a rotor structure for a magnetic levitation stirrer, comprising a rotor base 100 and blades 200. The blades 200 are connected to the rotor base 100. At least one of the rotor base 100 and the blades 200 is provided with a hanging portion 210. The hanging portion 210 can cooperate with an installation tool to limit the position in the vertical downward direction. The hanging portion 210 can be provided at the upper portion, the middle portion, or the lower portion of the blade 200, and this application is not limited thereto.

[0032] In the present application, at least one of the rotor seat 100 and the blade 200 is provided with a hanging portion 210. When assembling the rotor structure of the present application, the installation tool can be matched with the hanging portion 210. At this time, the hanging portion 210 and the installation tool are matched with the upper limit in the vertical downward direction. In this way, changing the position of the installation tool can change the position of the rotor structure connected to it, so that the rotor structure is located at a preset installation position. That is to say, after adopting the structure of the present application, the installer does not need to enter the material container, and the installation tool is small in size and occupies very little space in the material container. Therefore, even if the space in the material container is small, the rotor structure can be conveniently installed in the material container using the installation tool.

[0033] It should be noted that the installation tools here can be lifting tools, such as hooks, rings and other tools; the installation tools can also be lifting tools, such as lifting forks, etc. This application does not limit the specific types of installation tools.

[0034] If the hanging portion 210 is set on the rotor base 100, since the rotor base 100 will be connected to the stator structure 300, after the installation tool is matched with the hanging portion 210, the distance between the installation tool and the stator structure 300 is small. When the installation tool is used to change the position of the rotor structure, the installation tool may interfere with the stator structure 300.

[0035] Therefore, in order to reduce the interference between the installation tool and the stator structure 300, in an optional embodiment, the hanging portion 210 is a hanging hole, the blade 200 has a first blade surface and a second blade surface arranged opposite to each other, and the hanging hole passes through from the first blade surface to the second blade surface.

[0036] In this embodiment, the hanging portion 210 is provided on the blade 200, and the blade 200 is farther away from the stator structure 300 than the rotor seat 100. Therefore, after the installation tool is engaged with the hanging portion 210 on the blade 200, the installation tool is farther away from the stator structure 300, which can prevent the installation tool and the stator structure 300 from interfering with each other.

[0037] Furthermore, the attachment portion 210 of this embodiment is a attachment hole. When the rotor stirs the material, the material contacts the portion of the rotor located outside the attachment hole, i.e., the solid portion of the rotor. The solid portion of the rotor exerts a force on the material, causing the material to flow faster relative to the solid portion of the rotor. However, the attachment hole on the rotor does not contain any solid material and cannot exert a force on the material. Therefore, the material flows slower relative to the attachment hole of the rotor. This results in different layers of material having different flow rates, thereby forming shear forces between different layers, preventing solutes in the material from agglomerating, and thus improving the mixing effect of the material. Of course, the attachment portion 210 can also be a mating protrusion protruding from the blade surface, and this application is not limited to this.

[0038] To facilitate the engagement of the installation tool with the mounting hole, in an optional embodiment, the mounting hole extends to the first edge of the blade 200 and forms an access opening therein, allowing the installation tool to enter the mounting hole through the access opening. In this embodiment, the mounting hole extends to the first edge of the blade 200 and forms an access opening therein. In other words, the mounting hole is a non-enclosed structure circumferentially, allowing the installation tool to easily enter the mounting hole through the access opening. Of course, the mounting hole may also be spaced apart from the edge of the blade 200, and this application is not limited thereto.

[0039] To prevent the installation tool from detaching from the mounting hole while changing the position of the rotor structure using the installation tool, in an optional embodiment, the first edge is located on one side of the blade 200 along the radial direction of the rotor structure, and the mounting hole includes a first hole portion 211 and a second hole portion 212. The first hole portion 211 extends to the first edge and forms an entrance. The second hole portion 212 is located above the first hole portion 211 and is spaced apart from the first edge. A stop portion 220 is formed between the second hole portion 212 and the first edge. Specifically, the first hole portion 211 and the second hole portion 212 are spaced apart in the axial direction of the rotor structure.

[0040] In this embodiment, the second hole portion 212 is located above the first hole portion 211, and the second hole portion 212 does not extend to the first edge, so a limiting portion 220 can be formed between the second hole portion 212 and the first edge. When the installation tool is limited in cooperation with the rotor structure, the installation tool will be located in the second hole portion 212. Therefore, the limiting portion 220 between the second hole portion 212 and the first edge can limit the installation tool to prevent the installation tool from moving radially along the rotor structure and sliding out of the hanging hole, thereby avoiding the rotor structure from falling from the installation tool and being damaged.

[0041] In an optional embodiment, the hanging hole includes a hanging hole section and a guide hole section distributed in sequence along the rotation direction of the rotor structure. The guide hole section extends to the working blade surface of the blade 200. Along the rotation direction, the cross-sectional area of ​​the guide hole section gradually increases.

[0042] During the process of the blades 200 stirring the material, the working blade surface stirs the material, and the material exerts a reaction force on the working blade surface. The more material enters the attachment hole, the easier it is for the material to enter the attachment hole, the smaller the reaction force exerted by the material on the working blade surface, the smoother the rotation of the rotor structure, and the better the stirring effect on the material. Therefore, in this embodiment, the attachment hole includes a guide hole segment extending to the working blade surface of the blade 200. Here, the working blade surface is in direct contact with the material and is not in contact with the blade surface responsible for stirring and mixing. The cross-sectional area of ​​the guide hole segment gradually increases along the rotation direction of the rotor structure. The guide hole segment has a larger opening on the working blade surface, which makes it easier for the material to enter the attachment hole. After entering, the material is less likely to get stuck in the guide hole segment. This can improve the smoothness of the rotor structure's rotation and the stirring effect on the material.

[0043] It should be noted that when the rotor structure can only rotate in one direction, for example, the rotor structure can only rotate forward or reverse, one of the first blade surface and the second blade surface described below is the working blade surface. In this case, there is one guide hole segment, which extends to the first blade surface or the second blade surface. When the rotor structure can rotate in two directions, for example, the rotor structure can rotate both forward and reverse, the first blade surface and the second blade surface described below can both be working blade surfaces. There are two guide hole segments, which extend to the first blade surface and the second blade surface respectively. Along the above-mentioned rotation direction, the cross-sectional area of ​​one guide hole segment gradually decreases, while the cross-sectional area of ​​the other guide hole segment gradually increases. For example, when the first blade surface is the working blade surface, the cross-sectional area of ​​the guide hole segment extending to the first blade surface gradually increases, while the cross-sectional area of ​​the guide hole segment extending to the second blade surface gradually decreases.

[0044] Optionally, a chamfer 250 may be provided at the edge of the attachment hole located on the working blade surface, thereby forming the above-mentioned guide hole section. The chamfer 250 here may be a round chamfer 250 or a flat chamfer 250 .

[0045] In an optional embodiment, the blade 200 has a first blade surface and a second blade surface that are arranged opposite to each other. The blade 200 is further provided with a flow hole 230 that passes through from the first blade surface to the second blade surface.

[0046] The blades 200 of this embodiment are also provided with flow holes 230. When the rotor stirs the material, the material will contact the solid part of the rotor located outside the flow hole 230. The solid part of the rotor will exert a force on the material, and the flow speed of the material relative to the solid part of the rotor is faster; however, there is no solid material in the flow hole 230 on the rotor, and it cannot exert a force on the material. This part of the material can only rotate and flow under the drive of other layers of material. Therefore, the flow speed of the material relative to the flow hole 230 of the rotor is slower, which will make different layers of material have different flow speeds, so as to form shear force between different layers, prevent the solute in the material from agglomerating, and thus improve the mixing effect of the material.

[0047] In some embodiments, there are multiple blades 200, and the elevations of the flow holes 230 on each blade 200 are consistent. Since the flow holes 230 can enhance the mixing effect of the materials located on the upper and lower sides of the blade 200, but the elevations of the flow holes 230 are consistent, the blade 200 can only enhance the mixing effect of materials at two different elevations, and the improvement of the mixing effect of the materials is limited.

[0048] In an optional embodiment, there are multiple blades 200 , and the multiple blades 200 are spaced apart along the circumference of the rotor seat 100 , and the flow holes 230 on each blade 200 are located at different elevations.

[0049] In this embodiment, the heights of the flow holes 230 on each blade 200 are different. Since the flow holes 230 can enhance the mixing effect of the materials located on the upper and lower sides of the blade 200, and the elevations of the flow holes 230 are inconsistent, the blade 200 can enhance the mixing effect of materials at multiple different elevations, thereby significantly improving the mixing effect of the materials.

[0050] In an optional embodiment, the elevation of the flow holes 230 on each blade 200 increases sequentially along the circumference of the rotor structure. In this embodiment, material flowing through a flow hole 230 will enter an adjacent flow hole 230. Sequentially increasing the elevation of the flow holes 230 on each blade 200 can reduce the height difference between adjacent blades 200, thereby making it easier for material flowing through a flow hole 230 to enter an adjacent flow hole 230.

[0051] In an optional embodiment, a groove 240 is provided on the working surface of the blade 200, wherein the bottom wall of the groove 240 is a curved surface, and / or at least one side wall of the groove 240 is a curved surface. In this embodiment, the groove 240 is provided on the working surface of the blade 200, so that when the blade 200 stirs the material, the bottom wall and side walls of the groove 240 will also contact and collide with the material. By setting the bottom wall and / or at least one side wall of the groove 240 as a curved surface, the curved surface can be made to collide with the material. When the curved surface collide with the material, it not only exerts a horizontal force component on the material, but also exerts a vertical force component on the material, which can further enhance the mixing effect of the material.

[0052] like Figure 4 and Figure 5 As shown, a magnetic levitation stirrer includes the rotor structure described in any of the above embodiments, so that the magnetic levitation stirrer has the beneficial effects of the above rotor structure, which will not be described in detail here. Optionally, the magnetic levitation stirrer may further include a stator structure 300, the rotor structure is sleeved on the outside of the stator structure 300, the rotor seat 100 of the rotor structure is provided with a levitation magnet and a torque magnet, the stator structure 300 is provided with a levitation coil and a torque coil, the levitation coil and the levitation magnet are correspondingly arranged to drive the rotor structure to levitate, and the torque coil and the torque magnet are correspondingly arranged to drive the rotor structure to rotate.

[0053] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of this application and the claims, all of which are within the protection of this application.

Claims

1. A rotor structure of a magnetic levitation stirrer, characterized in that: The invention comprises a rotor seat (100) and a blade (200), wherein the blade (200) is connected to the rotor seat (100), and at least one of the rotor seat (100) and the blade (200) is provided with a hanging portion (210), and the hanging portion (210) can cooperate with an installation tool in a vertically downward limit direction.

2. The rotor structure according to claim 1, characterized in that: The hanging portion (210) is a hanging hole, the blade (200) has a first blade surface and a second blade surface that are arranged opposite to each other, and the hanging hole passes through from the first blade surface to the second blade surface.

3. The rotor structure according to claim 2, characterized in that: The hanging hole extends to the first edge of the blade (200), and forms an entry port at the first edge, and the installation tool can enter the hanging hole from the entry port.

4. The rotor structure according to claim 3, characterized in that: The first edge is located on one side of the blade (200) in the radial direction of the rotor structure, and the hanging hole includes a first hole portion (211) and a second hole portion (212), the first hole portion (211) extends to the first edge and forms the inlet, the second hole portion (212) is located above the first hole portion (211) and is spaced apart from the first edge, and a limiting portion (220) is formed between the second hole portion (212) and the first edge.

5. The rotor structure according to claim 2, characterized in that: The hanging hole comprises a hanging hole section and a guide hole section distributed in sequence along the rotation direction of the rotor structure, and the guide hole section extends to the working blade surface of the blade (200); Along the rotation direction, the cross-sectional area of ​​the guide hole section gradually increases.

6. The rotor structure according to claim 1, characterized in that: The blade (200) has a first blade surface and a second blade surface that are arranged opposite to each other. The blade (200) is also provided with a flow hole (230), and the flow hole (230) passes through from the first blade surface to the second blade surface.

7. The rotor structure according to claim 6, characterized in that: There are a plurality of blades (200), and the plurality of blades (200) are distributed at intervals along the circumference of the rotor seat (100), and the flow holes (230) on the blades (200) are located at different elevations.

8. The rotor structure according to claim 7, characterized in that: Along the circumference of the rotor structure, the elevations of the flow holes (230) on the blades (200) increase sequentially.

9. The rotor structure according to claim 1, characterized in that: A groove (240) is provided on the working surface of the blade (200); The bottom wall of the groove (240) is a curved surface, and / or at least one side wall of the groove (240) is a curved surface.

10. A magnetic levitation stirrer, characterized in that: The invention comprises a rotor structure according to any one of claims 1 to 9.

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