A device and method for providing a high stable magnetic flux change rate

Abstract

The present invention discloses a device and method for providing a high-stable magnetic flux change rate, comprising a placement table, a magnetic assembly is fixed on the top surface of which, the magnetic assembly consists of a first magnet group, a second magnet group and a guide magnet, the first magnet group is formed by bonding a plurality of first magnets with N levels facing upwards in sequence along a first horizontal direction, the second magnet group is formed by bonding a plurality of second magnets with S levels facing upwards in sequence along the first horizontal direction, the first magnet group and the second magnet group are arranged side by side and spaced apart along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the guide magnet is bonded between the first magnet group and the second magnet group and is located at the center of the magnetic assembly, with the N level facing the first magnet group and the S level facing the second magnet group, the placement table is connected to a rotating mechanism, the rotating mechanism is used to drive the placement table to drive the magnetic assembly to rotate horizontally around the axis, the central axis of the magnetic assembly coincides with the rotation axis of the placement table, and can provide a magnetic field with a stable magnetic flux change rate when the magnetic assembly rotates horizontally.

Description

Technical Field

[0001] The present invention relates to the technical field of magnet equipment, and in particular to an equipment and method for providing a high and stable magnetic flux change rate. Background Art

[0002] More and more miniaturized medical equipment products are emerging, and magnetic therapy equipment has emerged. Magnetic therapy equipment uses the alternating N / S magnetic field, the alternating combined magnetic field and the magnetic coupling effect to introduce the energy of the wavy magnetic field into the organism, so as to generate an induced electromotive force in the deep lesions in the organism, regulate the abnormal difference in cell membrane potential, and enhance the oxygen-carrying capacity of red blood cells. Magnetic field therapy equipment is favored by patients for its safety, non-invasiveness, non-irritation, targeted non-drug treatment and other characteristics. However, magnetic field therapy currently has the problem of uncontrollable stability of the magnetic flux change rate. When the magnetic flux change rate is unstable, the deep field electromagnetic waves are uncontrollable, which will cause side effects to the physical therapy of the organism. Therefore, it is urgent to develop a highly stable rotating magnetic field to provide a stable magnetic flux change rate device, and this case is generated. Summary of the invention

[0003] The object of the present invention is to provide a device that provides a high-stable magnetic flux change rate, and the technical problem to be solved is to provide a magnetic field with a high-stable magnetic flux change rate.

[0004] To achieve the above-mentioned purpose, the solution of the present invention is: a device that provides a high and stable magnetic flux change rate, including a placement table, a magnetic assembly is fixed on the top surface of the placement table, and the magnetic assembly consists of a first magnet group, a second magnet group and a guide magnet. The first magnet group is formed by bonding a number of first magnets with N levels facing upwards in sequence along a first horizontal direction, and the second magnet group is formed by bonding a number of second magnets with S levels facing upwards in sequence along the first horizontal direction. The number and size of the first magnets and the second magnets are consistent. The first magnet group and the second magnet group are arranged side by side and spaced apart in the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The guide magnet is bonded between the first magnet group and the second magnet group and is located at the center of the magnetic assembly, and the N level of the guide magnet faces the first magnet group, and the S level faces the second magnet group. The placement table is connected to a rotating mechanism, and the rotating mechanism is used to drive the placement table to drive the magnetic assembly to rotate horizontally around the axis, and the central axis of the magnetic assembly coincides with the rotation axis of the placement table.

[0005] Furthermore, a fixed layer is arranged directly above the placement table. The fixed layer is fixedly arranged and used to place biological samples. The fixed layer is made of non-ferromagnetic material so that the biological samples are placed in a changing magnetic field when the rotating mechanism drives the magnetic assembly to rotate horizontally.

[0006] Furthermore, the placement table is also connected to a lifting mechanism, which is used to drive the placement table up and down, so that when the magnetic component rises and approaches the fixed layer, the magnetic induction intensity at the biological sample becomes larger, or when the magnetic component descends and moves away from the fixed layer, the magnetic induction intensity at the biological sample becomes smaller.

[0007] Furthermore, the distance between the top surface of the magnetic component and the biological sample is 2 cm-10 cm, and the magnetic induction intensity at the biological sample ranges from 4375 GS to 878 GS, where GS is the unit of magnetic induction intensity.

[0008] Furthermore, the first magnet group also includes a first iron plate, and a plurality of first magnets are fixed on the first iron plate. The second magnet group also includes a second iron plate, and a plurality of second magnets are fixed on the second iron plate. The magnetic assembly also includes a third iron plate, and the first magnet group, the second magnet group and the guide magnet are fixed on the third iron plate.

[0009] Furthermore, a rotating mechanism is arranged under the placement table, and the rotating mechanism includes a rotating shaft and a first drive motor. The rotating shaft is longitudinally arranged, and the central axis of the rotating shaft coincides with the rotation axis of the placement table. The top of the rotating shaft is fixedly connected to the placement table. The first drive motor is connected to the rotating shaft and is used to drive the rotating shaft to drive the placement table to rotate horizontally.

[0010] Furthermore, the lifting mechanism includes a lifting plate and a screw assembly, the lifting plate is horizontally arranged and located below the placement table, the lifting plate is fixedly connected to the placement table, the screw assembly includes a screw and a movable nut, the movable nut is fixed on the lifting plate, a first through hole is longitudinally penetrated on the lifting plate, the first through hole corresponds longitudinally to the inner thread hole of the movable nut, the screw passes through the first through hole, and cooperates with the longitudinal thread of the movable nut;

[0011] It also includes a fixed platform, which is fixedly arranged and located below the lifting plate and parallel to the lifting plate. A second driving motor is installed on the bottom surface of the fixed platform. A second through hole is longitudinally penetrated through the fixed platform, and the second through hole corresponds to the first through hole. The bottom end of the screw rod passes downward through the second through hole and is fixedly connected to the second driving motor.

[0012] When the second driving motor drives the lead screw to rotate, the movable nut rises or falls relative to the lead screw, so that the lifting plate drives the placing platform to rise or fall.

[0013] Furthermore, there are at least two lifting mechanisms, and the two lifting mechanisms are symmetrically arranged relative to the central axis of the placement platform.

[0014] Furthermore, it also includes a box body and a support base, the support base is connected to the bottom side of the box body and is used to support the box body, the fixed layer and the placement table are arranged in the box body, and the outer periphery of the box body is made of transparent material.

[0015] The present invention also provides a method for applying the above device for providing a high stable magnetic flux change rate, comprising the following steps:

[0016] S1: Place a plurality of first magnets with their N poles facing upward and bond them in sequence along a first horizontal direction to form a first magnet group;

[0017] Adhere a plurality of second magnets with their S-levels facing upwards and bond them in sequence along the first horizontal direction to form a second magnet group;

[0018] Placing the first magnet group and the second magnet group side by side and spaced apart along a second horizontal direction, and bonding the guide magnet between the first magnet group and the second magnet group to form a magnetic assembly;

[0019] S2: Fix the magnetic assembly on the top side of the placement table;

[0020] S3: driving the rotating mechanism to work, so that the rotating mechanism drives the placement table to rotate horizontally around the axis, so that the magnetic induction intensity generated by the magnetic component changes, so that the biological sample is placed in a changing magnetic field;

[0021] S4: adjusting the rotation speed of the rotating mechanism to adjust the rate of change of magnetic flux;

[0022] S5: fix the rotation speed of the rotating mechanism to stabilize the rate of change of magnetic flux;

[0023] S6: driving the lifting mechanism to operate, so that the lifting mechanism drives the placement platform to move up and down, so as to adjust the distance between the biological sample and the magnetic component, so as to adjust the magnetic induction intensity at the biological sample.

[0024] After adopting the above scheme, the beneficial effect of the present invention is that: a first magnet group is formed by bonding a plurality of first magnets with N levels facing upwards in sequence along a first horizontal direction, a plurality of second magnets with S levels facing upwards are bonded in sequence along the first horizontal direction to form a second magnet group, and the second magnets are arranged side by side and spaced apart along the second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the magnetic induction lines run from the N levels of the first magnet group to the S levels of the second magnet group, and the number and size of the first magnets and the second magnets are consistent, so that the direction of the magnetic induction lines between the two is evenly distributed, and the first magnet group and the second magnet group are bonded by a guide magnet, the N level of the guide magnet faces the first magnet group, and the S level faces the second magnet group, and the setting of the guide magnet can shield the first magnet group The magnetic induction lines between the iron group and the second magnet group below, and the magnetic induction lines inside the guide magnets tend to be horizontal, guiding the magnetic induction lines from the N level above the first magnet group to the S level above the second magnet group, so that a uniform and stable magnetic field is formed above the first magnet group and the second magnet group, and the magnetic induction intensity of the magnetic field is in a maximum state; in addition, the placement table is connected to a rotating mechanism, which is used to drive the placement table to drive the magnetic assembly to rotate horizontally around the axis, so that the generated magnetic induction lines rotate alternately, which can provide a continuously changing magnetic field, and the entire structure of the magnetic assembly is centrally symmetrical, and the central axis of the magnetic assembly coincides with the rotation axis of the placement table, forming a highly stable rotating magnetic field to provide a highly stable magnetic flux change rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0026] Figure 2 The structure diagram of the placement table, the rotating mechanism and the lifting mechanism of the present invention is shown in FIG. Figure 1 .

[0027] Figure 3 The structure diagram of the placement table, the rotating mechanism and the lifting mechanism of the present invention is shown in FIG. Figure 2 .

[0028] Figure 4 The structure diagram of the placement table, the rotating mechanism and the lifting mechanism of the present invention is shown in FIG. Figure 3 .

[0029] Figure 5 The structure of the magnetic assembly of the present invention is schematically shown in FIG. Figure 1 .

[0030] Figure 6 The structure of the magnetic assembly of the present invention is schematically shown in FIG. Figure 2 .

[0031] Figure 7 It is a schematic diagram of the simulation of the magnetic induction intensity of the biological sample at a distance of 10 cm from the magnetic component in the present invention.

[0032] Figure 8 It is a schematic diagram of a simulation curve of magnetic induction intensity generated by the magnetic component at different positions from the biological sample in the present invention.

[0033] Fig. 9 It is a cross-sectional schematic diagram of the magnetic induction lines of the biological sample in the magnetic field generated by the magnetic component in the present invention.

[0034] Explanation of reference numerals: 100-magnetic assembly, 200-biological sample, 110-first magnet group, 120-second magnet group, 130-guide magnet, 140-first magnet, 150-second magnet, 160-first iron plate, 170-second iron plate, 180-third iron plate, 1-placing table, 2-rotating mechanism, 3-fixed layer plate, 4-lifting mechanism, 5-fixed table, 7-box, 8-support seat, 9-guide assembly, 10- Position sensor, 11-mounting groove, 21-rotating shaft, 22-first drive motor, 23-fixed seat, 41-lifting plate, 42-screw assembly, 43-screw, 44-movable nut, 45-first through hole, 46-second drive motor, 47-screw bearing assembly, 81-base, 82-support foot, 83-universal caster, 91-guide shaft, 92-shaft seat, 93-linear bearing, 211-fixed part, 212-bearing seat. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the use of terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present invention.

[0037] like Figures 1 to 9As shown, the present invention provides a device with a high stable flux change rate, including a placement table 1, a magnetic assembly 100 is fixed on the top surface of the placement table 1, and the magnetic assembly 100 is composed of a first magnet group 110, a second magnet group 120 and a guide magnet 130. The first magnet group 110 is formed by bonding a plurality of N-level upward first magnets 140 in sequence along a first horizontal direction, and the second magnet group 120 is formed by bonding a plurality of S-level upward second magnets 150 in sequence along a first horizontal direction. The number and size of the first magnets 140 and the second magnets 150 are consistent, so that the shape and size of the first magnet group 110 formed by bonding a plurality of first magnets 140 and the second magnets 150 are consistent. The second magnet group 120 formed by bonding the second magnet group 120 has the same shape and size. The first magnet group 110 and the second magnet group 120 are arranged side by side and spaced along the second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction. The first magnet group 110 and the second magnet group 120 with the same shape and size are arranged side by side and spaced along the second horizontal direction, which can effectively ensure that the magnetic induction lines between the first magnet group 110 and the second magnet group 120 are uniform in direction, forming a uniform and stable magnetic field. The guide magnet 130 is bonded between the first magnet group 110 and the second magnet group 120, and the N level faces the first magnet group 110, and the S level faces the second magnet group 120 (such as Figure 6 As shown in FIG. 1 ), a uniform transverse magnetic induction line is formed inside the guide magnet 130 to guide the magnetic induction line from the N level of the first magnet group 110 to the S level of the second magnet group 120, so that the magnetic induction intensity of the magnetic field generated above the first magnet group 110 and the second magnet group 120 is maximized. Fig. 9 As shown, uniform magnetic flux lines are formed above the first magnet group 110 and the second magnet group 120, and almost no magnetic flux lines are formed below the first magnet group 110 and the second magnet group 120. It can be seen that by setting the guide magnet 130, the magnetic field on the bottom side of the magnetic component 100 can be shielded. In addition, the guide magnet 130 is located at the center of the magnetic component 100 so that the magnetic component 100 forms a centrally symmetrical structure. Through this arrangement, the magnetic flux lines of the magnetic component 100 can be made uniform and the generated magnetic flux intensity reaches a maximum state. The placement table 1 is connected to a rotating mechanism 2, and the rotating mechanism 2 is used to drive the placement table 1 to drive the magnetic component 100 to rotate horizontally around the axis. The central axis of the magnetic component 100 coincides with the rotation axis of the placement table 1 to ensure that the magnetic component 100 can perform stable horizontal rotation, thereby forming a stable rotating magnetic field and generating a stable magnetic flux change rate.

[0038] A fixed layer plate 3 is arranged directly above the placement table 1. The fixed layer plate 3 is fixedly arranged and used to place the biological sample 200. The fixed layer plate 3 is made of non-ferromagnetic material to avoid affecting the magnetic field. When the rotating mechanism 2 drives the magnetic assembly 100 to rotate horizontally, the biological sample 200 is placed in a changing magnetic field. Fig. 9As shown, the magnetic induction lines formed above the magnetic assembly 100 evenly pass through the position where the biological sample 200 is located. When the magnetic assembly 100 rotates horizontally at a fixed speed, a stable rotating magnetic field can be generated to form a stable magnetic flux change rate, so that the biological sample 200 is in a magnetic field with a high stable magnetic flux change rate; focus on Figure 2-4 As shown, the rotating mechanism 2 is arranged below the placement table 1, and the rotating mechanism 2 includes a rotating shaft 21 and a first driving motor 22. The rotating shaft 21 is arranged longitudinally, and the central axis of the rotating shaft 21 coincides with the rotation axis of the placement table 1, and the top end thereof is fixedly connected to the placement table 1. Specifically, a coaxial fixing portion 211 is formed at the top end of the rotating shaft 21, and the outer diameter of the fixing portion 211 is larger than the outer diameter of the rotating shaft 21. The bottom surface of the placement table 1 is formed with a mounting groove 11 for the fixing portion 211 to be embedded in the mounting groove 11, so that after the fixing portion 211 is embedded in the mounting groove 11, the fixing portion 211 is fixed in the mounting groove 11 by bolts, so that the rotating shaft 21 is fixed to the placement table 1. Of course, other structures can also be used for this purpose. The first drive motor 22 is connected to the rotating shaft 21, and is used to drive the rotating shaft 21 to drive the placement table 1 to rotate horizontally. When in use, the horizontal rotation speed of the magnetic component 100 is adjusted by adjusting the speed of the first drive motor 22, and then the magnetic flux change rate is adjusted. When the magnetic induction intensity of the magnetic field at the biological sample 200 remains unchanged, the speed is increased, and the magnetic flux change rate generated by the magnetic component 100 increases, which can make the biological sample 200 be in a magnetic field with a higher magnetic flux change rate. On the contrary, the speed is reduced, and the magnetic flux change rate generated by the magnetic component 100 is reduced, so that the biological sample 200 is in a magnetic field with a lower magnetic flux change rate.

[0039] The placement table 1 is also connected to a lifting mechanism 4, which is used to drive the placement table 1 to move up and down, so that when the magnetic component 100 rises and approaches the fixed layer plate 3, the magnetic induction intensity at the biological sample 200 gradually increases, or when the magnetic component 100 descends and moves away from the fixed layer plate 3, the magnetic induction intensity at the biological sample 200 gradually decreases, so as to adjust the magnetic induction intensity of the magnetic field at the biological sample 200; when in use, while keeping the rotation speed of the rotating mechanism 2 unchanged, the magnetic flux change rate is adjusted by adjusting the distance between the biological sample 200 and the magnetic component 100. When the distance between the two is smaller, the magnetic induction intensity at the biological sample 200 becomes stronger, and the magnetic flux change rate is also increased accordingly. When the distance between the two is larger, the magnetic induction intensity at the biological sample 200 is weakened, and the magnetic flux change rate is also reduced accordingly. When it is necessary to maintain a stable magnetic flux change rate, the distance between the biological sample 200 and the magnetic component 100 is first kept fixed, and then the rotation speed of the rotating mechanism 2 is adjusted until the desired magnetic flux change rate is reached, and then the adjustment of the rotating mechanism 2 is stopped to keep the magnetic flux change rate stable. Of course, the magnetic flux change rate can also be adjusted by first adjusting the rotation speed of the rotating mechanism 2 and then adjusting the distance between the biological sample 200 and the magnetic component 100. This allows for flexible adjustment of the magnetic flux change rate and is easy to use.

[0040] In this specific embodiment, the distance between the top surface of the magnetic assembly 100 and the biological sample 200 is 2 cm-10 cm, and the magnetic induction intensity at the biological sample 200 ranges from 4375 GS to 878 GS, where GS is the unit of magnetic induction intensity. Figure 8 As shown, when the distance between the top surface of the magnetic assembly 100 and the biological sample 200 is 2 cm, the magnetic induction intensity range at the biological sample 200 is 4375 GS, when the distance between the top surface of the magnetic assembly 100 and the biological sample 200 is 4 cm, the magnetic induction intensity range at the biological sample 200 is 2885 GS, when the distance between the top surface of the magnetic assembly 100 and the biological sample 200 is 10 cm, the magnetic induction intensity range at the biological sample 200 is 878 GS, and then focus on Figure 7 As shown, it can be seen that when the distance between the top surface of the magnetic assembly 100 and the biological sample 200 is 10 cm, the magnetic induction intensity of the magnetic field at the biological sample 200 is evenly distributed, that is, the red area in the figure, and the magnetic induction intensity approaches to about 800 GS.

[0041] Focus on combination Figure 5 As shown, the first magnet group 110 also includes a first iron plate 160, and a plurality of first magnets 140 are fixed on the first iron plate 160. The second magnet group 120 also includes a second iron plate 170, and a plurality of second magnets 150 are fixed on the second iron plate 170. The magnetic assembly 100 also includes a third iron plate 180. The first magnet group 110, the second magnet group 120 and the guide magnet 130 are fixed on the third iron plate 180. The fixing method between the magnet and the iron plate can be glued or screwed, without specific limitation. In addition, the first The iron plate 160, the second iron plate 170 and the third iron plate 180 are all made of 1010 stainless steel material, which has good plasticity and toughness, as well as good welding performance; by fixing the first magnet group 110 on the first iron plate 160, the second magnet group 120 on the second iron plate 170, and then fixing the first magnet group 110, the second magnet group 120 and the guide magnet 130 on the third iron plate 180, the assembled magnetic assembly 100 can effectively reduce the repulsive force between the magnets and has higher stability.

[0042] Preferably, in order to maximize the magnetic induction intensity generated by the magnetic assembly 100, and at the same time, when the distance from the biological sample 200 is 2cm-10cm, the magnetic induction intensity at the magnetic field where the biological sample 200 is located can reach the above-mentioned 4375GS-878GS, the following materials and sizes of magnets are specifically used for design;

[0043] The first magnet 140 and the second magnet 150 are both made of NdFeB material, preferably NdFeB N56 material, which can generate a strong magnetic field and maintain stable magnetic properties;

[0044] The first magnet group 110 is formed by bonding four first magnets 140, and the size of the first magnet 140 is 100 mm×50 mm×45 mm, wherein 100 mm is the length, 50 mm is the width, and 45 mm is the height, the width direction is the first horizontal direction, and the length direction is the second horizontal direction;

[0045] The first iron plate 160 has a size of 100 mm×200 mm×5 mm, wherein 100 mm is the length, 200 mm is the width, and 5 mm is the height. Four first magnets 140 are fixed on the first iron plate 160 to form a first magnet group 110 with a size of 100 mm×200 mm×50 mm.

[0046] The size of each second magnet 150 is 100 mm×50 mm×45 mm, wherein 100 mm is the length, 50 mm is the width, and 45 mm is the height;

[0047] The second iron plate 170 has a size of 100 mm×200 mm×5 mm, wherein 100 mm is the length, 200 mm is the width, and 5 mm is the height. Four second magnets 150 are fixed on the second iron plate 170 to form a second magnet group 120 with a size of 100 mm×200 mm×50 mm.

[0048] The guide magnet 130 has a size of 50 mm×150 mm×50 mm, wherein 50 mm is the length, 150 mm is the width, and 50 mm is the height. Both ends of the guide magnet 130 along the width direction are respectively bonded to the four first magnets 140 of the first magnet group 110 and to the four second magnets 150 of the second magnet group 120;

[0049] The third iron plate 180 has a size of 250mm×200mm×20mm, wherein 250mm is the length, 200mm is the width, and 20mm is the height. The first magnet group 110, the second magnet group 120 and the guide magnet 130 are fixed on the third iron plate 180 to form a magnetic assembly 100 with an outer size of 250mm×200mm×70mm.

[0050] The magnet combination structure can achieve the required magnetic field magnetic induction intensity while reducing the amount of magnets used. The maximum magnetic induction intensity can reach 4375GS and the minimum can reach 878GS.

[0051] Focus on combination Figure 3As shown, the lifting mechanism 4 includes a lifting plate 41 and a screw assembly 42. The lifting plate 41 is horizontally arranged and located below the placement table 1. The lifting plate 41 is fixedly connected to the placement table 1. Specifically, a bearing and a bearing seat 212 are arranged on the outer periphery of the rotating shaft 21 of the rotating mechanism 2. The inner ring of the bearing is interference fit with the rotating shaft 21, and the outer ring of the bearing is fixed to the bearing seat 212. The rotating shaft 21 drives the inner ring of the bearing to rotate relative to the outer ring of the bearing and the bearing seat 212. This is a prior art and will not be described in detail. The bearing seat 212 is fixed to the top side of the lifting plate 41. Since the top end of the rotating shaft 21 is fixed to the placement table 1, the lifting plate 41 is fixed to the placement table 1. In addition, a fixed seat 23 is also fixed to the bottom side of the lifting plate 41. The fixed seat 23 is a hollow annular structure. The first drive motor 22 of the rotating mechanism 2 is fixed to the bottom end of the fixed seat 23 to avoid applying force to the rotating shaft 21. The output shaft of the first drive motor 22 extends upward and is connected to the rotating shaft 21 through a coupling. This is a prior art and will not be described in detail.

[0052] The screw assembly 42 includes a screw 43 and a movable nut 44. The movable nut 44 is fixed on the lifting plate 41. The lifting plate 41 is longitudinally penetrated with a first through hole 45. The first through hole 45 corresponds to the inner threaded hole of the movable nut 44 in the longitudinal direction. The screw 43 passes through the first through hole 45 and is longitudinally threaded with the movable nut 44. It also includes a fixed platform 5. The fixed platform 5 is fixedly arranged and located below the lifting plate 41 and parallel to the lifting plate 41. A second driving motor 46 is installed on the bottom surface of the fixed platform 5. The fixed platform 5 is longitudinally penetrated with a second through hole. The second through hole corresponds to the first through hole 45. The bottom end of the screw 43 passes downward through the second through hole and is fixedly connected to the second driving motor 46. When the motor 46 drives the screw 43 to rotate, the movable nut 44 rises or falls relative to the screw 43, thereby driving the lifting plate 41 and the placement table 1 to rise or fall; specifically, a screw bearing assembly 47 is also installed on the top surface of the fixed platform 5, and the screw bearing assembly 47 includes a screw bearing and a screw bearing seat. The screw bearing seat is fixed on the fixed platform 5, the outer ring of the screw bearing is fixed to the screw bearing seat, and the inner ring of the screw bearing is tightly fixed to the screw 43, so that when the screw 43 rotates, the inner ring of the screw bearing is driven to rotate relative to the outer ring of the screw bearing. This is a prior art and will not be described in detail. By installing the screw bearing assembly 47, the axial stability of the screw 43 is guaranteed, and the efficiency and accuracy of the transmission of the screw 43 are improved.

[0053] Preferably, there are at least two lifting mechanisms 4, and the two lifting mechanisms 4 are symmetrically arranged relative to the central axis of the placement table 1, which can ensure the stability and balance of the placement table 1 and the magnetic component 100 fixed on the top surface of the placement table 1. Of course, in other embodiments, the lifting mechanisms 4 can also be three, four, etc., which can be arranged around the bottom of the placement table 1 at equal intervals to stably drive the lifting plate 41 to rise or fall. In addition, in order to further ensure the stability of the lifting plate 41 in the axial lifting and no deflection occurs, a guide assembly 9 is also provided on the lifting plate 41, and the guide assembly 9 includes a guide shaft 91 , a shaft seat 92 and a linear bearing 93, the shaft seat 92 is fixed to the bottom end of the lifting plate 41 and is fixed to the top side of the guide shaft 91, the linear bearing 93 is installed on the fixed platform 5, and a third through hole is longitudinally penetrated on the fixed platform 5 for the linear bearing 93 to be installed and fixed, the guide shaft 91 is longitudinally matched on the linear bearing 93, and can slide up and down relative to the linear bearing 93, so that when the lifting plate 41 rises, the guide shaft 91 rises with the lifting plate 41 and slides up relative to the linear bearing 93, so that when the lifting plate 41 is lowered, the guide shaft 91 falls with the lifting plate 41 and slides down relative to the linear bearing 93, and the focus is on the combination Figure 3 As shown, there are two guide assemblies 9 , which are respectively arranged on opposite sides of the axis of the rotating shaft 21 , and play a guiding role in the up and down lifting direction of the lifting plate 41 .

[0054] Focus on combination Figure 4 A position sensor 10 is also provided on the fixed platform 5 for collecting the lifting distance of the lifting plate 41.

[0055] In this specific implementation, it also includes a box body 7 and a support base 8, which is connected to the bottom side of the box body 7 and is used to support the box body 7. Specifically, the support base 8 is made of low-carbon steel as a whole, has a stable structure, can effectively reduce the centrifugal force generated when the equipment runs at high speed, and provides strong support for the smooth operation of the equipment. The support base 8 includes a base 81, support feet 82 and universal casters 83. The box body 7 is arranged on the top side of the base 81, and the support feet 82 and the universal casters 83 are arranged at the bottom of the base 81. The support feet 82 and the universal casters 83 are used Provide support for the box base 81 and the box body 7. In addition, the universal caster 83 can rotate 360 ​​degrees on the horizontal plane, which is convenient for moving in any direction. It is flexible and convenient to move the entire device to a predetermined position. The support foot 82 can adjust the height. When in use, when the entire device needs to be moved to a specified position, the support foot 82 is adjusted to a state off the ground, and the entire device is pushed. The universal caster 83 rolls the entire device to the specified position; when it needs to be fixed, the support foot 82 is adjusted to abut the ground so that the support foot 82 can move the entire device. Support, the number of supporting feet 82 is set to be multiple, six in this specific embodiment, and can also be other numbers. Those skilled in the art can design it according to specific circumstances; specifically, the top of the supporting foot 82 is a screw, which is threadedly connected to the base 81. Rotating the supporting foot 82 can raise or lower the supporting foot 82 relative to the base 81, and the entire device can be conveniently moved and fixed as a whole; the fixed layer 3 and the placement table 1 are arranged in the box body 7, and the outer periphery of the box body 7 is made of transparent material, which can observe the movement of the internal biological sample 200 under the action of the magnetic field in real time and can record it in real time; in addition, the box body 7 is also provided with a control system, specifically a PLC controller, which is electrically connected to the first drive motor 22 and the second drive motor 46 respectively, so as to control the lifting distance of the placement table 1, or control the rotation speed of the placement table 1, and then control the magnetic induction intensity and magnetic flux change rate generated by the magnetic component 100 on the biological sample 200, and control the first drive motor 22 and the second drive motor 46 to work through the PLC controller. This is a prior art and will not be described in detail.

[0056] The present invention also provides a method for applying the above device for providing a high stable magnetic flux change rate, comprising the following steps:

[0057] S1: Adhere a plurality of first magnets 140 with their N poles facing upwards in sequence along a first horizontal direction to form a first magnet group 110;

[0058] Adhere a plurality of second magnets 150 with their S-levels facing upwards in sequence along a first horizontal direction to form a second magnet group 120;

[0059] The first magnet group 110 and the second magnet group 120 are placed side by side and spaced apart along a second horizontal direction, and the guide magnet 130 is bonded between the first magnet group 110 and the second magnet group 120 to form a magnetic assembly 100;

[0060] S2: Fix the magnetic assembly 100 on the top side of the placement table 1;

[0061] S3: driving the rotating mechanism 2 to work, so that the rotating mechanism 2 drives the placement table 1 to rotate horizontally around the axis, so that the magnetic induction intensity generated by the magnetic assembly 100 changes, so that the biological sample 200 is in a changing magnetic field;

[0062] S4: adjusting the rotation speed of the rotating mechanism to adjust the rate of change of magnetic flux;

[0063] S5: fix the rotation speed of the rotating mechanism to stabilize the rate of change of magnetic flux;

[0064] S6: driving the lifting mechanism 4 to work, so that the lifting mechanism 4 drives the placement table 1 to move up and down, so as to adjust the distance between the biological sample 200 and the magnetic assembly 100, to adjust the magnetic induction intensity at the biological sample 200, and further adjust the magnetic flux change rate.

[0065] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A device for providing a high and stable rate of change of magnetic flux, characterized in that: The invention comprises a placement table (1), wherein a magnetic assembly (100) is fixed on the top surface of the placement table (1), wherein the magnetic assembly (100) is composed of a first magnet group (110), a second magnet group (120) and a guide magnet (130), wherein the first magnet group (110) is formed by bonding a plurality of first magnets (140) with N-levels facing upwards in sequence along a first horizontal direction, and the second magnet group (120) is formed by bonding a plurality of second magnets (150) with S-levels facing upwards in sequence along a first horizontal direction, wherein the number and size of the first magnets (140) and the second magnets (150) are the same, and the first magnet group (110) and the second magnet group (130) are connected to each other. 20) are arranged side by side and spaced apart along a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, the guide magnet (130) is bonded between the first magnet group (110) and the second magnet group (120), and is located at the center of the magnetic assembly (100), and the N-level of the guide magnet (130) is facing the first magnet group (110), and the S-level is facing the second magnet group (120), the placement table (1) is connected to a rotating mechanism (2), the rotating mechanism (2) is used to drive the placement table (1) to drive the magnetic assembly (100) to rotate horizontally around the axis, and the central axis of the magnetic assembly (100) coincides with the rotation axis of the placement table (1).

2. The device for providing a high stable rate of change of magnetic flux according to claim 1, characterized in that: A fixed layer plate (3) is arranged directly above the placement table (1); the fixed layer plate (3) is fixedly arranged and used to place the biological sample (200); the fixed layer plate (3) is made of a non-ferromagnetic material so that when the rotating mechanism (2) drives the magnetic assembly (100) to rotate horizontally, the biological sample (200) is placed in a changing magnetic field.

3. The device for providing a high stable rate of change of magnetic flux according to claim 2, characterized in that: The placement table (1) is also connected to a lifting mechanism (4), which is used to drive the placement table (1) to move up and down, so that when the magnetic component (100) moves up and approaches the fixed layer plate (3), the magnetic induction intensity at the biological sample (200) increases, or when the magnetic component (100) moves down and away from the fixed layer plate (3), the magnetic induction intensity at the biological sample (200) decreases.

4. The device for providing a high stable rate of change of magnetic flux according to claim 3, characterized in that: When the distance between the top surface of the magnetic assembly (100) and the biological sample (200) is 2 cm-10 cm, the magnetic induction intensity at the biological sample (200) ranges from 4375 GS to 878 GS, wherein GS is a unit of magnetic induction intensity.

5. The device for providing a high stable rate of change of magnetic flux according to claim 1, characterized in that: The first magnet group (110) further comprises a first iron plate (160), and a plurality of first magnets (140) are fixed on the first iron plate (160); the second magnet group (120) further comprises a second iron plate (170), and a plurality of second magnets (150) are fixed on the second iron plate (170); the magnetic assembly (100) further comprises a third iron plate (180), and the first magnet group (110), the second magnet group (120) and the guide magnet (130) are fixed on the third iron plate (180).

6. The device for providing a high stable rate of change of magnetic flux according to claim 1, characterized in that: The rotating mechanism (2) is arranged below the placement table (1), and comprises a rotating shaft (21) and a first driving motor (22). The rotating shaft (21) is arranged longitudinally, the central axis of the rotating shaft (21) coincides with the rotation axis of the placement table (1), and the top end of the rotating shaft (21) is fixedly connected to the placement table (1). The first driving motor (22) is connected to the rotating shaft (21) and is used to drive the rotating shaft (21) to drive the placement table (1) to rotate horizontally.

7. The device for providing a high stable rate of change of magnetic flux according to claim 3, characterized in that: The lifting mechanism (4) comprises a lifting plate (41) and a screw assembly (42); the lifting plate (41) is arranged horizontally and is located below the placement table (1); the lifting plate (41) is fixedly connected to the placement table (1); the screw assembly (42) comprises a screw (43) and a movable nut (44); the movable nut (44) is fixed to the lifting plate (41); a first through hole (45) is longitudinally penetrated on the lifting plate (41); the first through hole (45) corresponds longitudinally to the internal threaded hole of the movable nut (44); the screw (43) passes through the first through hole (45) and is threadably matched with the movable nut (44); It also includes a fixed platform (5), which is fixedly arranged and located below the lifting plate (41) and parallel to the lifting plate (41). A second drive motor (46) is installed on the bottom surface of the fixed platform (5). A second through hole is longitudinally penetrated through the fixed platform (5), and the second through hole corresponds to the first through hole (45). The bottom end of the screw rod (43) passes downward through the second through hole and is fixedly connected to the second drive motor (46); When the second driving motor (46) drives the screw rod (43) to rotate, the movable nut (44) rises or falls relative to the screw rod (43), so that the lifting plate (41) drives the placement platform (1) to rise or fall.

8. The device for providing a high stable rate of change of magnetic flux according to claim 7, characterized in that: There are at least two lifting mechanisms (4), and the two lifting mechanisms (4) are symmetrically arranged relative to the central axis of the placement platform (1).

9. The device for providing a high stable rate of change of magnetic flux according to claim 3, characterized in that: It also includes a box body (7) and a support base (8), wherein the support base (8) is connected to the bottom side of the box body (7) and is used to support the box body (7), the fixed layer plate (3) and the placement table (1) are arranged in the box body (7), and the outer periphery of the box body (7) is made of a transparent material.

10. A method for using the device for providing a high stable rate of change of magnetic flux as claimed in claim 3, characterized in that: The following steps are involved: S1: bonding a plurality of first magnets (140) with their N poles facing upwards in sequence along a first horizontal direction to form a first magnet group (110); Adhere a plurality of second magnets (150) with their S-levels facing upwards in sequence along a first horizontal direction to form a second magnet group (120); Placing the first magnet group (110) and the second magnet group (120) side by side and spaced apart along a second horizontal direction, and bonding the guide magnet (130) between the first magnet group (110) and the second magnet group (120) to form a magnetic assembly (100); S2: fixing the magnetic assembly (100) on the top side of the placement table (1); S3: driving the rotating mechanism (2) to work, so that the rotating mechanism (2) drives the placement table (1) to rotate horizontally around the axis, so that the magnetic induction intensity generated by the magnetic component (100) changes, so that the biological sample (200) is placed in a changing magnetic field; S4: adjusting the rotation speed of the rotating mechanism to adjust the rate of change of magnetic flux; S5: fix the rotation speed of the rotating mechanism to stabilize the rate of change of magnetic flux; S6: driving the lifting mechanism (4) to operate, so that the lifting mechanism (4) drives the placement platform (1) to move up and down, so as to adjust the distance between the biological sample (200) and the magnetic assembly (100), so as to adjust the magnetic induction intensity at the biological sample (200).

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