A magnet tile mounting structure around a pipe wall

Abstract

The application relates to the technical field of nanometer magnetic bead preparation, and discloses a magnetic tile mounting structure with a magnet surrounding a pipe wall. The magnetic tile mounting structure comprises an embedded magnetic plate and a plurality of magnetic tiles. The embedded magnetic plate comprises a plurality of continuously spliced annular or arc-shaped supporting blocks. A plurality of first grooves are formed in the top surface of the supporting blocks, and a plurality of second grooves are formed in the bottom surface of the supporting blocks. The first grooves and the second grooves of adjacent supporting blocks are oppositely arranged and spliced into cavities for accommodating the magnetic tiles. The shapes of the cavities are matched with the shapes of the magnetic tiles. The application can realize stable installation of the magnetic tiles and facilitates replacement and rearrangement of the magnetic tiles.

Description

Technical Field

[0001] This application relates to the technical field of nanomagnetic bead preparation, and in particular to a magnetic tile mounting structure in which a magnet surrounds a tube wall. Background Technology

[0002] Magnetic beads are micron- or nano-sized particle structures with excellent magnetic response characteristics. Their core is typically composed of a magnetic inorganic material (such as magnetite), coated with a polymer or silica material, and specific functional groups, such as carboxyl or amino groups, are introduced on the surface, enabling them to specifically bind to target molecules. Due to their magnetic controllability and high flexibility in functionalization, magnetic beads are widely used in various biological and industrial fields, including nucleic acid extraction, protein purification, cell sorting, immunoassay, and magnetically controlled drug delivery. However, after synthesis, magnetic beads often suffer from problems such as uneven magnetic properties, residual impurities, and inconsistent particle size distribution. Without purification and screening, these issues directly affect their magnetic responsiveness and binding specificity, thus reducing their separation efficiency and reusability in subsequent applications. Therefore, after the magnetic beads are prepared, they typically need to be separated and enriched to remove particles with weak magnetism, abnormal size, or high impurity content, thereby improving overall purity and functional consistency.

[0003] Because the response capabilities of magnetic particles in different batches of magnetic bead stock solutions vary significantly, the strength of the external magnetic field often needs to be adjusted according to the characteristics of the stock solution to be separated during actual use. If the magnetic field is too strong, weakly magnetic impurity particles may be adsorbed along with the magnetic field, thereby reducing the separation purity; if the magnetic field is too weak, the target magnetic beads may not be able to aggregate effectively, affecting the recovery rate. Therefore, the magnetic field generating device should have an adjustable magnetic function.

[0004] In practical engineering applications, a feasible solution to achieve this function is to construct an adjustable magnetic field source by assembling and adjusting multiple magnetic tile modules. The arrangement of the magnetic tiles can be changed, and they can be easily replaced or substituted locally to achieve dynamic adjustment of the magnetic field strength and distribution pattern. Traditionally, grooves are directly cut into a fixed support structure to embed the magnetic tiles, relying on the geometric fit between the grooves and the tiles for fixation. However, due to the significant magnetic attraction between high-strength permanent magnets (such as neodymium iron boron), adjacent magnetic tiles are tightly attracted within the grooves, often making disassembly difficult. Summary of the Invention

[0005] In order to achieve a structural design that facilitates stable installation of magnetic tiles and makes it easy to replace and rearrange them, this application provides a magnetic tile installation structure in which a magnet surrounds the pipe wall.

[0006] This application provides a magnetic tile mounting structure with a magnet surrounding a pipe wall, employing the following technical solution:

[0007] A magnetic tile mounting structure for a magnet surrounding a pipe wall includes a magnetic plate and several magnetic tiles. The magnetic plate includes several continuously spliced ​​annular or arc-shaped support blocks. The top surface of the support block has several first grooves, and the bottom surface of the support block has several second grooves. The first and second grooves of adjacent support blocks are arranged opposite to each other and spliced ​​to form a cavity for accommodating the magnetic tiles. The shape of the cavity is adapted to the shape of the magnetic tiles.

[0008] The above technical solution achieves the embedding and fixing of the magnetic tile by interlocking the first and second grooves of two adjacent support blocks to form a cavity. In use, the magnetic tile is first placed into the first groove of one support block, where it is partially exposed due to the unsealed groove. Then, the second groove of the other support block is engaged, clamping the magnetic tile within the cavity formed by the two grooves. This design not only avoids the problems of traditional limiting slots where the magnetic tile is difficult to remove after being strongly magnetically attracted, or where the magnetic tile is tightly adhered to the stainless steel support block, but also simplifies the installation and removal process through modular assembly. When the magnetic tile needs to be replaced, it can be pried or pulled out using the portion exposed in the first groove, allowing for replacement without additional tools. Furthermore, compared to traditional monolithic magnet structures, this structure utilizes the magnetic field superposition effect generated by the adjacent arrangement of multiple magnetic tiles, concentrating magnetic field lines in the interface area between the tiles, thus generating a stronger magnetic field.

[0009] Optionally, the magnetic poles of the magnetic tile are arranged along the axial direction of the magnetic plate, and the opposite magnetic poles of the magnetic tiles on adjacent magnetic plates are arranged opposite each other.

[0010] By setting the magnetic tiles on adjacent support blocks to opposite magnetic poles, not only can stable magnetic attraction be formed between the support blocks during assembly, thereby enhancing the overall mechanical stability of the structure, but also a local magnetic flux density area can be formed between adjacent magnetic tiles, significantly increasing the magnetic field strength in that area.

[0011] Optionally, the magnetic poles of the magnetic tile are arranged circumferentially along the embedded magnetic plate, and the opposite magnetic poles of adjacent magnetic tiles on the same embedded magnetic plate are arranged opposite each other.

[0012] Through the above technical solution, a local magnetic flux density area is formed between adjacent magnetic tiles, which greatly improves the magnetic field strength in the area.

[0013] Optionally, the opposite sides of adjacent support blocks are provided with positioning pins and positioning grooves for mutual cooperation.

[0014] By employing the aforementioned technical solution, and by providing locating pins and locating grooves on the opposite sides of adjacent support blocks for mutual engagement, precise positioning can be achieved during assembly. This effectively prevents the support blocks from twisting or shifting in the circumferential direction, thereby ensuring that the overall magnet array maintains the predetermined magnetic pole alignment after assembly. Furthermore, the positioning structure provides additional radial constraint on the support blocks during subsequent clamping or fastening at both ends, preventing radial displacement of the central support block due to external forces or magnetic attraction.

[0015] Optionally, the magnetic tile is a block with a cross-section of a regular hexagon, rhombus, or parallelogram.

[0016] Optionally, it also includes a shielding plate adapted to the shape of the outer side of the magnetic plate, and the outer side of the support block is provided with threaded holes, and the support block is bolted to the shielding plate.

[0017] By fixing the shielding plate to the outer wall of the magnetic plate using the above technical solution, it is possible to prevent adjacent support blocks from slipping or falling off during operation. At the same time, the shielding plate can effectively shield the leakage magnetic field of the magnetic tile, preventing strong magnetic fields from interfering with surrounding electronic equipment, personnel, or other magnetic field-sensitive components.

[0018] Optionally, adjacent support blocks are fixed to each other by complementary tongue and slot structures.

[0019] Optionally, the magnetic tile is a neodymium iron boron block, a samarium cobalt block, or a magnetite block.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. By splicing multiple support blocks to form a magnetic plate structure, and forming a cavity between the first and second grooves of adjacent support blocks to accommodate the magnetic tile, the magnetic tile can be stably clamped in the magnetic plate. By retaining the exposed structure of the magnetic tile for applying force, the installation and replacement efficiency of the magnetic tile is improved, and it is convenient to make flexible adjustments according to the magnetic field requirements of different target magnetic beads.

[0022] 2. This application forms a high-gradient strong magnetic region at the junction of adjacent magnetic tiles by setting up an axially or circumferentially arranged heteronymous magnetic tile structure. At the same time, the arrangement density and magnetic field strength are increased by using regular hexagonal, rhomboid or parallelogram magnetic tiles, and the shielding plate effectively shields the leakage magnetic field, thereby improving operational safety and equipment electromagnetic compatibility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a magnetic tile mounting structure for a magnet surrounding a pipe wall, according to one embodiment of this application. Figure 1 .

[0024] Figure 2This is an exploded view of the support block in this embodiment.

[0025] Figure 3 This is a schematic diagram of the cooperation between the support block and the magnetic tile in this embodiment.

[0026] Figure 4 illustrates the effect of the magnetization accuracy of the rhomboid magnetic tile on the magnetic field adsorption area.

[0027] Figure 5 This is a schematic diagram of the cooperation between adjacent support blocks in an embodiment of this application.

[0028] Figure 6 A schematic diagram of a magnetic tile mounting structure for a magnet surrounding a pipe wall, as described in this application embodiment. Figure 2 .

[0029] Figure label:

[0030] 1. Magnetic plate; 2. Magnetic tile; 3. Support block; 41. First groove; 42. Second groove; 5. Positioning pin; 6. Positioning groove; 7. Shielding plate; 8. Bolt; 9. Anti-detachment plate. Detailed Implementation

[0031] The embodiments of this application are described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0032] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] A magnetic bead separation tube is a hollow tubular structure with an internal fluid channel for containing a magnetic bead suspension. During use, the purification and separation of the target magnetic beads are achieved by adjusting the fluid flow rate and the intensity of the external magnetic field.

[0034] This application discloses a magnetic tile mounting structure with a magnet surrounding the tube wall, used to install around the outer wall of a magnetic bead separation tube to provide a stable and adjustable external magnetic field, so as to generate directional magnetic attraction force on the magnetic beads under different operating conditions, thereby achieving effective separation of the target magnetic beads. (Refer to...) Figure 1 The magnetic tile mounting structure surrounding the pipe wall includes a magnetic plate 1 and several magnetic tiles 2.

[0035] The magnetic tile 2 can be selected according to the magnetic field requirements and manufacturing process, with regular geometric blocks such as hexagons, rhombuses, or parallelograms preferred to improve the compactness of the arrangement and the uniformity of the magnetic field. The material of the magnetic tile 2 can be neodymium iron boron, samarium cobalt, iron tetroxide, or other high-performance rare earth magnetic materials, depending on the application scenario. As an example, a rhombus-shaped block is preferred in this embodiment.

[0036] Reference Figure 1-2 The embedded magnetic plate 1 is composed of multiple support blocks 3, the specific shape of which is related to the magnetic bead separating tube to be used. In different embodiments, when the magnetic bead separating tube is a round tube, each support block 3 is a circular ring or an arc ring structure. Alternatively, when the magnetic bead separating tube is a square tube, each support block 3 is a square ring or a square semi-ring structure.

[0037] A circular or arc-shaped structure refers to a support block 3 whose inner and outer surfaces are both arc-shaped surfaces arranged around the same axis. Of the two sets of opposing sides of the support block 3, one set is a planar structure that is parallel to each other and perpendicular to the axis. In different embodiments, the other set of sides can be inclined surfaces extending towards the axis, in which case the dihedral angle between the two sides is equal to the central angle corresponding to the inner and outer arc surfaces. Alternatively, it can be a side structure that does not extend towards the axis, in which case the dihedral angle formed by the two sides is not equal to the central angle corresponding to the inner and outer arc surfaces, meaning the central angles of the inner and outer arc surfaces of the support block 3 relative to the axis are inconsistent. These structural variations do not affect the implementation of this embodiment, nor do they affect the scope of protection of this application.

[0038] Specifically, the support block 3 can be a complete 360° ring or a 180° semi-circular ring structure. In practical applications, for ease of installation and maintenance, the support block 3 can also be designed as several small-angle arc segments, such as each support block 3 being a 120° or 90° arc segment. In this case, three or four blocks can be spliced ​​together to form a complete ring of embedded magnetic plate 1 structure, which surrounds the outer circumference of the tube wall of the magnetic bead separating tube.

[0039] Reference Figure 2-3 Each support block 3 has several first grooves 41 and second grooves 42 on its two opposite sides. The first grooves 41 and second grooves 42 of adjacent support blocks 3 are arranged opposite each other and can be assembled to form a cavity for accommodating the magnetic tile 2. The shape of the cavity is adapted to the shape of the magnetic tile 2. When in use, the magnetic tile 2 can be first placed into the first groove 41 of one support block 3. Since the groove is not closed, the magnetic tile 2 will be partially exposed. Then, the second groove 42 of another support block 3 is engaged with it, clamping the magnetic tile 2 in the cavity formed by the two grooves.

[0040] Referring to Figure 4, the yellow area represents the magnetic attraction area, the blue area represents the N pole of the magnetic tile, and the red area represents the S pole of the magnetic tile. In a preferred embodiment, as shown in Figure 4, the magnetic poles of the magnetic tile 2 are arranged along the axial direction (i.e., the longitudinal direction of the pipe) of the magnetic plate 1, and the magnetic tiles 2 on adjacent support blocks 3 are arranged with opposite magnetic poles facing each other. Because the opposite magnetic poles are close to each other, a high magnetic field strength can be generated at the interface, thereby constructing a magnetic bead attraction area. In another optional embodiment (not shown in the figure), the magnetic poles of the magnetic tile 2 are arranged along the circumferential direction of the magnetic plate 1, and adjacent magnetic tiles 2 on the same support block 3 are also arranged with opposite magnetic poles facing each other, which can further increase the magnetic field density.

[0041] In another alternative implementation, to improve the assembly accuracy and ease of installation between modules, refer to Figure 5 The sides of adjacent support blocks 3 are equipped with positioning pins 5 and corresponding positioning grooves 6, so that each block can automatically align and position itself during assembly, reducing manual alignment errors.

[0042] To achieve fixation between adjacent support blocks 3, in different embodiments, the support block 3 can be fixed to the adjacent support block 3 directly or indirectly. For example, referring to... Figure 6 A shielding plate 7, whose shape matches that of the outer surface of the magnetic plate 1, is provided on the outer side of the magnetic plate 1. Threaded holes are pre-drilled on the outer side of the support block 3, which mate with the through holes on the shielding plate 7 to achieve bolt 8 fixation. Simultaneously, the shielding plate 7 effectively shields the leaked magnetic field of the magnetic tile 2, preventing strong magnetic interference to surrounding electronic equipment, personnel, or other magnetic field-sensitive components. For example, adjacent support blocks 3 are mutually fixed by complementary latching tongues and slots.

[0043] In different embodiments, the inner surface of the support block 3 can be directly attached to the magnetic bead separation tube, or an anti-detachment plate 9 can be designed on the inner surface (see reference). Figure 6 The inner layer bonding structure (9) is used to prevent the magnetic tiles 2 in the embedded magnetic plate 1 from falling off. This anti-detachment plate is typically made of stainless steel, possessing good mechanical strength and magnetic flux penetration. On the one hand, it can resist external stress impacts to prevent the magnetic tiles 2 from shifting or falling off; on the other hand, it does not significantly obstruct or weaken magnetic field lines, ensuring that the magnetic field can effectively penetrate into the interior of the magnetic bead separating tube. In other embodiments, the anti-detachment plate 9 can also be made of non-magnetic titanium alloy, engineering plastic, or aluminum alloy—any material with good mechanical strength, wear resistance, and magnetic field penetration performance is acceptable. The geometric contour of the anti-detachment plate 9 is adapted to the shape of the outer wall of the magnetic bead separating tube to achieve a tight-fitting covering effect.

[0044] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A magnetic tile mounting structure for a magnet surrounding a pipe wall, characterized in that, The device includes a magnetic plate (1) and several magnetic tiles (2). The magnetic plate (1) includes several continuously spliced ​​annular or arc-shaped support blocks (3). The top surface of the support block (3) is provided with several first grooves (41), and the bottom surface of the support block (3) is provided with several second grooves (42). The first grooves (41) and second grooves (42) of adjacent support blocks (3) are arranged opposite to each other and spliced ​​to form a cavity for accommodating the magnetic tiles (2). The shape of the cavity is adapted to the shape of the magnetic tiles (2).

2. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, The magnetic poles of the magnetic tile (2) are arranged along the axial direction of the magnetic plate (1), and the opposite magnetic poles of the magnetic tiles (2) on adjacent magnetic plates (1) are arranged opposite to each other.

3. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, The magnetic poles of the magnetic tile (2) are arranged circumferentially along the embedded magnetic plate (1), and the opposite magnetic poles of adjacent magnetic tiles (2) on the same embedded magnetic plate (1) are arranged opposite to each other.

4. The magnetic tile mounting structure for magnets surrounding the pipe wall according to claim 1, characterized in that, The opposing sides of the adjacent support blocks (3) are provided with positioning pins (5) and positioning grooves (6) for mutual cooperation.

5. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, The magnetic tile (2) is a block with a cross-section of regular hexagon, rhombus or parallelogram.

6. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, It also includes a shielding plate (7) that is adapted to the shape of the outer side of the magnetic plate (1), and the outer side of the support block (3) is provided with threaded holes, and the support block (3) is bolted (8) to the shielding plate (7).

7. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, Adjacent support blocks (3) are fixed to each other by complementary tongue and slot structures.

8. The magnetic tile mounting structure for a magnet surrounding a pipe wall according to claim 1, characterized in that, The magnetic tile (2) is a neodymium iron boron block, a samarium cobalt block, or a ferric oxide block.

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