Magnetic suspension stirring head
By adopting magnetic levitation technology in the stirring head, and using the magnetic suction combination of the first suspended magnetic ring and the second suspended magnetic ring, the problem that the impeller easily falls off during the down-pressure stirring of the existing stirring head is solved, and a stable down-pressure stirring effect is achieved.
Patent Information
- Application Number
- CN202421526010.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing stirring heads tend to cause the impeller to fall off during the down-pressure stirring process, and stable down-pressure stirring cannot be achieved.
By adopting the design of a magnetic levitation stirring head, the impeller is firmly suspended and fixed on the welding plate tube by the magnetic suction combination of the first levitation magnetic ring and the second levitation magnetic ring, thereby achieving stable down-pressure stirring.
It effectively avoids the impeller falling off, ensures the stability of stirring during down pressure, and achieves effective restrictions on the impeller when it moves up and down.
Smart Images
Figure CN222885609U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stirrers, in particular to a magnetic levitation stirring head. Background Art
[0002] Biomedical engineering comprehensively applies the principles and methods of life science and engineering science. From an engineering perspective, it understands the structure, function, and other life phenomena of the human body at multiple levels, including molecules, cells, tissues, organs, and even the entire human body system. It is the general term for the technology of artificial materials, products, devices, and systems used for disease prevention, treatment, human function assistance, and health care. During the production process of biomedicine, it is necessary to stir the materials.
[0003] The existing stirring heads all use the T-shaped structure as shown in Figure 1 It is not convenient to realize the downward pressing type stirring, and the impeller is prone to fall off during the process of downward pressing type stirring. Content of the Utility Model
[0004] 1. Technical Problems to be Solved by the Utility Model
[0005] The purpose of the utility model is to solve the technical problems existing in the prior art, and provide a magnetic levitation stirring head, which can make the impeller firmly levitate and fixed on the welded coil through the cooperation of the first levitation magnetic ring and the second levitation magnetic ring, so as to realize stable downward pressing type stirring.
[0006] 2. Technical Solutions
[0007] To solve the above problems, the technical solution provided by the utility model is as follows:
[0008] A magnetic levitation stirring head, comprising an external driving part, a welded coil and an impeller. The external driving part is arranged inside the welded coil. The impeller is sleeved on the welded coil. The impeller is rotationally connected to the welded coil through a bearing structure. Inside the external driving part, a first driving magnetic ring and a first levitation magnetic ring are arranged in sequence from bottom to top. Inside the impeller, a second driving magnetic ring and a second levitation magnetic ring are arranged in sequence from bottom to top. The first driving magnetic ring and the second driving magnetic ring are magnetically attracted and matched. The first levitation magnetic ring and the second levitation magnetic ring are magnetically attracted and matched. The N poles and S poles of the first levitation magnetic ring and the second levitation magnetic ring are arranged along their own axial directions, and the N poles and S poles of the first levitation magnetic ring and the second levitation magnetic ring are arranged in the opposite directions.
[0009] Optionally, the magnetic induction intensities of the first driving magnetic ring, the first levitation magnetic ring, the second levitation magnetic ring, the second driving magnetic ring, the third levitation magnetic ring and the fourth levitation magnetic ring are 5200 gauss.
[0010] Optionally, a flange is provided at the bottom of the welded coil, and the bottom of the impeller is arranged at an interval from the flange.
[0011] Optionally, the bearing structure includes a male bearing and a female bearing. The male bearing is detachably connected to the upper end of the welded coil, and the female bearing is detachably connected to the upper end of the impeller.
[0012] Optionally, a fixed shaft is connected to the upper end of the welded coil. The male bearing is sleeved on the fixed shaft, and a locking screw is connected to the top of the fixed shaft.
[0013] Optionally, an upper through hole is formed in the upper end of the impeller corresponding to the position of the fixed shaft, and the female bearing is installed in the upper through hole.
[0014] Optionally, internal threads are provided in the upper through hole, a threaded member is connected in the upper through hole, and the female bearing is connected to the threaded member.
[0015] 3. Beneficial effects
[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:
[0017] This magnetic levitation stirring head can effectively prevent the impeller from falling off through the cooperation of two sets of suspension magnetic rings 6 with opposite arrangements of N poles and S poles, so as to ensure stable stirring when pressing down. For example, when the impeller moves upward, the N pole of the second suspension magnetic ring moves upward to partially coincide with the N pole of the first suspension magnetic ring. At this time, the magnetic poles of the two are the same and repel each other, thereby restricting the impeller from continuing to move upward. When the impeller moves downward, it is restricted by the repulsion of the S poles of the first suspension magnetic ring and the second suspension magnetic ring. Description of the drawings
[0018] Figure 1 Schematic diagram of the T-shaped bearing structure of the existing stirrer proposed in the background technology of the present utility model;
[0019] Figure 2 Schematic diagram of the structure of a magnetic levitation stirring head proposed in the embodiment of the present utility model;
[0020] Figure 3 Schematic diagram of the magnetic poles of the driving magnetic ring and the suspension magnetic ring in a magnetic levitation stirring head proposed in the embodiment of the present utility model;
[0021] 1. External driving member; 2. Welded coil; 3. Impeller; 4. First driving magnetic ring; 5. First suspension magnetic ring; 7. Second driving magnetic ring; 8. Second suspension magnetic ring; 10. Flange; 11. Male bearing; 12. Female bearing; 13. Fixed shaft; 14. Locking screw; 15. Threaded member. Detailed implementation manners
[0022] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and do not limit the protection scope of the present utility model.
[0023] It should be noted that when an element is referred to as being "fixed to", "arranged on", "fixedly arranged on" or "mounted on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. Further, when an element is considered to be "fixedly connected" to another element, the two can be fixed in a detachable connection manner or a non-detachable connection manner, such as socket connection, snap connection, integral molding fixation, welding, etc., which can be achieved in the prior art and will not be elaborated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is perpendicular, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiment.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0025] The "first" and "second" involved in the present utility model do not represent specific quantities and orders, but are only used for name distinction.
[0026] Combined with the attached Figures 1-3, A magnetic levitation stirring head according to this embodiment includes an external drive member 1, a welding coil 2, and an impeller 3. The external drive member 1 is controlled to rotate by a driving device such as a motor. The welding coil 2 is sleeved on the external drive member 1 and fixedly connected to a non-rotating shaft position of the driving device. The external drive member 1 can rotate freely within the welding coil 2. The impeller 3 is sleeved on the welding coil 2, and the impeller 3 is rotatably connected to the welding coil 2 through a bearing structure. A first driving magnetic ring 4 and a first levitation magnetic ring 5 are sequentially arranged in the external drive member 1 from bottom to top. A second driving magnetic ring 7 and a second levitation magnetic ring 8 are sequentially arranged in the impeller 3 from bottom to top. The first driving magnetic ring 4, the first levitation magnetic ring 5, the second driving magnetic ring 7, and the second levitation magnetic ring 8 are all arranged around the same axis. The first driving magnetic ring 4 and the second driving magnetic ring 7 are arranged at the same height and magnetically attracted to each other. The first levitation magnetic ring 5 and the second levitation magnetic ring 8 are arranged at the same height and magnetically attracted to each other. The N poles and S poles of the first levitation magnetic ring 5 and the second levitation magnetic ring 8 are both arranged along the axial direction of the impeller. The upper end of the first levitation magnetic ring 5 in the axial direction is the N pole, and the lower end is the S pole. The upper end of the second levitation magnetic ring 8 in the axial direction is the S pole, and the lower end is the N pole.
[0027] Through the cooperation of two sets of levitation magnetic rings 6 with opposite arrangements of N poles and S poles, this magnetic levitation stirring head can effectively prevent the impeller 3 from falling off, thereby ensuring stable stirring during downward pressure. For example, when the impeller 3 moves upward, the N pole of the second levitation magnetic ring 8 moves upward to partially coincide with the N pole of the first levitation magnetic ring 5. At this time, the magnetic poles of the two are the same and repel each other, thereby restricting the impeller from continuing to move upward. When the impeller 3 moves downward, it is restricted by the repulsion of the S poles of the first levitation magnetic ring 5 and the second levitation magnetic ring 8.
[0028] As a preferred solution of the present utility model, the magnetic induction intensities of the first driving magnetic ring 4, the first levitation magnetic ring 5, the second driving magnetic ring 7, and the second levitation magnetic ring 8 are 5200 gauss. By using ultra-high-strength military-grade magnets of 5200 gauss, the stirring stability is greatly improved compared to other 3500 gauss magnets; by using the same amount of levitation magnets as the driving magnets, the levitation effect is better, and customization can be achieved even for demagnetizing materials such as duplex steel 254; the design of a 3-fold larger torque and the same driving magnetic levitation magnet can achieve downward pressure stirring, and the mixing and dissolved oxygen effects are better than those of upward propulsion; the ultra-high-temperature magnetic column has a heat resistance rating of up to 220 °C, and can still ensure the stability of high torque during high-frequency high-temperature disinfection compared to other low-temperature magnetic columns of 150 °C.
[0029] As a preferred solution of the present utility model, a flange 10 is welded to the bottom of the welding coil 2, and the flange 10 is fixedly connected to the flange on the driving device. The bottom of the impeller 3 is spaced from the flange 10. Since the bottom of the impeller 3 does not contact the flange 10, there will be no cleaning dead angle at the bottom of the impeller 3, making it easier to clean.
[0030] As a preferred embodiment of the present utility model, the bearing structure includes a male bearing 11 and a female bearing 12. The male bearing 11 is detachably connected to the upper end of the welded coil 2, and the female bearing 12 is detachably connected to the upper end of the impeller 3. In case of sudden breakage, it can be flexibly and randomly replaced in the user's workshop without having to return to the factory.
[0031] As a preferred embodiment of the present utility model, a fixed shaft 13 is connected to the upper end of the welded coil 2. The male bearing 11 is sleeved on the fixed shaft 13. A locking screw 14 is connected to the top of the fixed shaft 13. The screwing part of the locking screw 14 abuts against the upper end of the male bearing 11 to limit the axial movement of the male bearing 11. An upper through hole is provided at the position corresponding to the fixed shaft 13 at the upper end of the impeller 3. Internal threads are provided in the upper through hole. A threaded part 15 is connected in the upper through hole. The female bearing 12 is connected to the threaded part 15. The upper end of the threaded part 15 is connected with a hexagonal screwing part, and the hexagonal screwing part extends out from the upper end of the impeller 3 for easy operation.
[0032] As a preferred embodiment of the present utility model, the diameter of the upper through hole is larger than the diameter of the largest part of the locking screw 14. A through hole with a diameter larger than the diameter of the largest part of the locking screw 14 is also provided through the threaded part 15, so that the male bearing 11 can be replaced without disassembling the impeller 3.
[0033] The above schematically describes the present utility model and its embodiments. The description is not restrictive. What is shown in the drawings is only one of the embodiments of the present utility model, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative work without departing from the creative purpose of the present utility model, they shall fall within the protection scope of the present utility model.
Claims
1. A magnetic levitation stirring head, characterized in that: It includes an external driving member, a welding coil and an impeller, the external driving member is arranged in the welding coil, the impeller is sleeved on the welding coil, and the impeller is rotatably connected to the welding coil through a bearing structure. A first power magnetic ring and a first suspension magnetic ring are arranged in sequence from bottom to top in the external driving member, and a second power magnetic ring and a second suspension magnetic ring are arranged in sequence from bottom to top in the impeller. The first power magnetic ring and the second power magnetic ring are magnetically matched, the first suspension magnetic ring and the second suspension magnetic ring are magnetically matched, the N pole and the S pole of the first suspension magnetic ring and the second suspension magnetic ring are both arranged along the axial direction of the impeller, and the N pole and the S pole of the first suspension magnetic ring and the second suspension magnetic ring are arranged in opposite directions.
2. A magnetic levitation stirring head according to claim 1, characterized in that: The magnetic induction intensity of the first power magnetic ring, the first suspension magnetic ring, the second power magnetic ring and the second suspension magnetic ring is 5200 Gauss.
3. A magnetic levitation stirring head according to claim 1, characterized in that: A flange is provided at the bottom of the welded coil, and the bottom of the impeller is spaced apart from the flange.
4. A magnetic levitation stirring head according to any one of claims 1 to 3, characterized in that: The bearing structure comprises a male bearing and a female bearing, wherein the male bearing is detachably connected to the upper end of the welding coil, and the female bearing is detachably connected to the upper end of the impeller.
5. A magnetic levitation stirring head according to claim 4, characterized in that: The upper end of the welding coil is connected with a fixed shaft, the male bearing is sleeved on the fixed shaft, and the top of the fixed shaft is connected with a locking screw.
6. A magnetic levitation stirring head according to claim 5, characterized in that: An upper through hole is provided at the upper end of the impeller corresponding to the position of the fixed shaft, and the female bearing is installed in the upper through hole.
7. A magnetic levitation stirring head according to claim 6, characterized in that: An internal thread is arranged in the upper through hole, a threaded component is connected in the upper through hole, and the female bearing is connected to the threaded component.