Stable dispersion maintaining device for magnetic particle suspension

Abstract

The utility model relates to a stable dispersion maintaining device for magnetic particle suspension liquid, and belongs to the technical field of magnetic material dispersion. The device comprises a sound insulation box body, a heat preservation device and a container, a lifting platform is arranged in the center of the bottom of the sound insulation box body, the heat preservation device is arranged on the lifting platform, and an ultrasonic generator is arranged between the inner side wall and the outer side wall of the heat preservation device. A probe of the ultrasonic generator penetrates through the inner side wall of the heat preservation device and extends into a cavity of the heat preservation device, the container is arranged in the cavity of the heat preservation device and is filled with magnetic particles and a solvent, a stirring device is fixedly arranged in the center of the top wall of the sound insulation box body, and a stirring paddle of the stirring device vertically extends downwards to the bottom of the container. The magnetic particles and the solvent in the container are stably suspended and uniformly dispersed in the solvent for a long time through cooperation of mechanical stirring and ultrasound to form a magnetic particle suspension, and the problems that the magnetic particles are settled, agglomerated and poor in dispersity in a solution system can be effectively solved.

Description

Technical Field

[0001] The utility model relates to a device for maintaining stable dispersion of magnetic particle suspensions, belonging to the technical field of magnetic material dispersion. Background Art

[0002] Magnetic particles are widely used in biomedicine, water treatment, catalyst carriers, magnetic data storage and other fields due to their unique magnetic properties, adsorption properties and high specific surface area. However, single-component magnetic particles have disadvantages such as unsatisfactory performance, poor oxidation resistance and easy failure. In recent years, remarkable progress has been made in surface modification of magnetic particles by using chemical modification, physical adsorption, bioenzyme reaction and other methods in solution systems. However, the sedimentation, agglomeration and poor dispersibility of magnetic particles in solution systems lead to the problems of uneven and non-dense modified layers obtained by the above methods.

[0003] Magnetic stirring, ultrasonic treatment, and mechanical stirring are the main means to disperse particles stably in solution. However, due to the magnetism of magnetic particles, they will be adsorbed on the magnetic magnet of magnetic stirring; the medium and high density of magnetic particles makes it impossible to disperse them by ultrasound, and they always sink to the bottom of the container; mechanical stirring has the problem of uneven stirring, and high-speed stirring and high magnetic particles may even cause the stirring bar to be micro-magnetized and adsorb the magnetic particles. Therefore, solving the uniform dispersion of magnetic particles in the solution and obtaining a stable suspension are key issues that should be urgently solved before surface modification of magnetic particles. Utility Model Content

[0004] In view of the problems of sedimentation, agglomeration and poor dispersibility of magnetic particles when surface modification is performed in a solution system, the utility model proposes a device for stabilizing and dispersing a magnetic particle suspension. A container containing a solution of magnetic particles to be stably dispersed is placed in a heat preservation device. The magnetic particles are suspended in the solution by the rapid rotation of a mechanical stirring device, and the magnetic particles are dispersed by ultrasonic waves emitted by an ultrasonic generator. The two work together to obtain a uniformly and stably dispersed magnetic particle suspension. The problems of sedimentation, agglomeration and poor dispersibility of magnetic particles in a solution system are effectively solved, thereby solving the problem of uneven and dense modified layers generated when the magnetic particles are subsequently modified.

[0005] A device for maintaining a stable dispersion of a magnetic particle suspension, comprising a soundproof box 2, a heat preservation device 8 and a container 3, wherein a lifting platform 19 is arranged at the bottom center of the soundproof box 2, the heat preservation device 8 is arranged on the lifting platform 19, an ultrasonic generator 14 is arranged between the inner wall 5 and the outer wall 6 of the heat preservation device 8, the probe of the ultrasonic generator 14 passes through the inner wall 5 of the heat preservation device 8 and extends into the cavity of the heat preservation device 8, the container 3 is arranged in the cavity of the heat preservation device 8, the container 3 is filled with magnetic particles and a solvent, a stirring device 1 is fixedly arranged at the top wall center of the soundproof box 2, and a stirring paddle 10 of the stirring device 1 extends vertically downward to the bottom of the container 3;

[0006] The container containing the magnetic particle solution to be stably dispersed is placed in a heat preservation device, the magnetic particles are suspended in the solution by the rapid rotation of the mechanical stirring device, and the magnetic particles are dispersed by the ultrasonic wave emitted by the ultrasonic generator, and the two work together to obtain a uniform and stably dispersed magnetic particle suspension; effectively solving the problem of uneven and dense modified layer caused by the sedimentation, agglomeration and poor dispersibility of magnetic particles in the solution system;

[0007] The ultrasonic frequency range of the ultrasonic generator is 20 to 110 KHz;

[0008] The soundproof box 2 can avoid noise pollution generated by the stirring device 1 and the ultrasonic generator 14 when they are working; the lifting platform 19 can control the placement height of the heat preservation device 8, which is convenient for placing and taking out the container 3.

[0009] A horizontal partition 4 is fixedly provided at the top of the heat preservation device 8, a container through hole is opened at the center of the horizontal partition 4, the top of the container 3 is located in the container through hole, and a buffer annular gasket 11 is provided between the container 3 and the container through hole of the horizontal partition 4;

[0010] The horizontal partition plate 4 and the buffer annular gasket 11 can stabilize the container 3 to prevent the container 3 from tilting or falling due to large vibration caused by mechanical stirring and ultrasonic waves.

[0011] The magnetic particle suspension stable dispersion and maintenance device also includes a hot water circulation supply device, a water inlet pipe 13 is buried at the top of the side wall of the heat preservation device 8, a water outlet pipe 7 is buried at the bottom of the side wall of the heat preservation device 8, the water inlet pipe 13 is externally connected to the drain outlet of the hot water circulation supply device, the water outlet pipe 7 is externally connected to the water inlet of the hot water circulation supply device, the temperature sensor I12 is fixedly arranged on the horizontal partition 4, and the sensing probe of the temperature sensor I12 is vertically inserted downward into the cavity of the heat preservation device 8;

[0012] The hot water from the hot water circulation supply device is transported to the insulation device 8 through the water inlet pipe 13 to achieve the insulation of the solution in the container 3. The temperature of the hot water in the insulation device 8 is monitored in real time by the temperature sensor Ⅰ12. When the temperature of the hot water in the insulation device 8 is lower than the preset minimum temperature threshold, part of the water is discharged through the water outlet pipe 7 and circulated back to the hot water circulation supply device. The hot water from the hot water circulation supply device is then transported and added to the insulation device 8 through the water inlet pipe 13 to increase the temperature of the hot water in the insulation device 8. When the temperature of the hot water in the insulation device 8 is higher than the preset maximum temperature threshold, the water inlet pipe 13 stops transporting and adding hot water to the insulation device 8.

[0013] The hot water circulation supply device comprises a water tank 17, a heater 18 and a temperature control device 15. The heater 16 is arranged at the bottom of the water tank 17. A temperature sensor II 16 is arranged in the water tank 17. The temperature sensor I 12 and the temperature sensor II 16 are both connected to the temperature control device 15 by electrical signals. The heater 18 is connected to the temperature control device 15 by electrical signals.

[0014] The temperature sensor II 16 monitors the temperature of the hot water in the water tank 17 in real time. When the temperature of the hot water in the water tank 17 is lower than the preset minimum temperature threshold, the temperature control device 15 controls the heater 18 to heat the hot water in the water tank 17; when the temperature of the hot water in the water tank 17 is higher than the preset maximum temperature threshold, the temperature control device 15 controls the heater 18 to stop working, thereby realizing temperature control of the hot water in the water tank 17.

[0015] The water inlet pipe 13 is provided with a water flow solenoid valve I, and the water outlet pipe 7 is provided with a water flow solenoid valve II; the water flow solenoid valve I and the water flow solenoid valve II are used to control the rate of adding hot water and the rate of discharging hot water in the insulation device 8 to achieve dynamic balance.

[0016] A sound insulation pad 9 is provided at the connection between the top wall of the sound insulation box 2 and the stirring device 1 .

[0017] The soundproof box body 2 is connected with a cabinet door via a hinge.

[0018] The method for using the magnetic particle suspension stable dispersion and maintenance device comprises the following specific steps:

[0019] 1) placing a container containing a solution of magnetic particles to be stably dispersed in a heat preservation device, and placing the heat preservation device on a lifting platform;

[0020] 2) adjusting the height of the lifting platform so that the stirring paddle of the stirring device extends vertically downward to the bottom of the container and the blade of the stirring paddle is located at the bottom of the solution in the container;

[0021] 3) Turn on the stirring device and the ultrasonic generator, ensure that the magnetic particles are suspended in the solution through the rapid rotation of the mechanical stirring device, and disperse the magnetic particles through the ultrasonic waves emitted by the ultrasonic generator, so as to obtain a uniform and stably dispersed magnetic particle suspension.

[0022] The beneficial effects of the utility model are:

[0023] (1) The utility model utilizes the synergistic effect of mechanical stirring and ultrasound to effectively solve the problems of sedimentation, agglomeration and poor dispersibility of magnetic particles in the solution system, so that the magnetic particles can be dispersed in the suspension in a long-term and stable manner, thereby solving the problem of uneven and dense modified layers generated when the magnetic particles are subsequently modified;

[0024] (2) The utility model adopts a heat preservation device to adjust the temperature of the magnetic particle suspension to maintain a stable state;

[0025] (3) The soundproof box of the utility model can avoid the noise pollution generated by the stirring device and the ultrasonic generator when they are working; the lifting platform can control the placement height of the heat preservation device, which is convenient for placing and taking out the container;

[0026] (4) The magnetic particle suspension stable dispersion and holding device of the utility model has a reasonable structural design and provides a reaction platform for the surface modification and post-treatment of the magnetic particles in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of a device for maintaining stable dispersion of magnetic particle suspension;

[0028] In the figure, 1-stirring device, 2-soundproof box, 3-container, 4-horizontal partition, 5-inner wall, 6-outer wall, 7-water outlet pipe, 8-heat preservation device, 9-soundproof pad, 10-stirring paddle, 11-buffer ring gasket, 12-temperature sensor I, 13-water inlet pipe, 14-ultrasonic generator, 15-temperature control device, 16-temperature sensor II, 17-water tank, 18-heater, 19-lifting platform. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with specific implementation methods, but the protection scope of the present invention is not limited to the described contents.

[0030] Embodiment 1: A device for maintaining stable dispersion of magnetic particle suspension (see Figure 1), comprising a soundproof box 2, a heat preservation device 8 and a container 3, a lifting platform 19 is arranged at the bottom center of the soundproof box 2, the heat preservation device 8 is arranged on the lifting platform 19, an ultrasonic generator 14 is arranged between the inner wall 5 and the outer wall 6 of the heat preservation device 8, the probe of the ultrasonic generator 14 passes through the inner wall 5 of the heat preservation device 8 and extends into the cavity of the heat preservation device 8, the container 3 is arranged in the cavity of the heat preservation device 8, the container 3 is filled with magnetic particles and a solvent, a stirring device 1 is fixedly arranged at the top wall center of the soundproof box 2, and a stirring paddle 10 of the stirring device 1 extends vertically downward to the bottom of the container 3;

[0031] The container containing the magnetic particle solution to be stably dispersed is placed in a heat preservation device, the magnetic particles are suspended in the solution by the rapid rotation of the mechanical stirring device, and the magnetic particles are dispersed by the ultrasonic wave emitted by the ultrasonic generator, and the two work together to obtain a uniform and stably dispersed magnetic particle suspension; effectively solving the problem of uneven and dense modified layer caused by the sedimentation, agglomeration and poor dispersibility of magnetic particles in the solution system;

[0032] The ultrasonic frequency range of the ultrasonic generator is 20 to 110 KHz;

[0033] The soundproof box 2 can avoid noise pollution generated by the stirring device 1 and the ultrasonic generator 14 when they are working; the lifting platform 19 can control the placement height of the heat preservation device 8, which is convenient for placing and taking out the container 3.

[0034] Embodiment 2: The structure of the device for maintaining a stable dispersion of a magnetic particle suspension in this embodiment is basically the same as that of the device for maintaining a stable dispersion of a magnetic particle suspension in Embodiment 1, except that: a horizontal partition 4 is fixedly provided on the top of the heat preservation device 8, a container through hole is provided at the center of the horizontal partition 4, the top of the container 3 is located in the container through hole, and a buffer annular gasket 11 is provided between the container 3 and the container through hole of the horizontal partition 4;

[0035] The horizontal partition plate 4 and the buffer annular gasket 11 can stabilize the container 3 to prevent the container 3 from tilting or falling due to large vibration caused by mechanical stirring and ultrasonic waves.

[0036] Embodiment 3: The structure of the magnetic particle suspension stable dispersion and maintenance device of this embodiment is basically the same as that of the magnetic particle suspension stable dispersion and maintenance device of embodiment 2, except that: the magnetic particle suspension stable dispersion and maintenance device also includes a hot water circulation supply device, a water inlet pipe 13 is buried at the top of the side wall of the heat preservation device 8, a water outlet pipe 7 is buried at the bottom of the side wall of the heat preservation device 8, the water inlet pipe 13 is externally connected to the drain outlet of the hot water circulation supply device, the water outlet pipe 7 is externally connected to the water inlet of the hot water circulation supply device, the temperature sensor Ⅰ12 is fixedly arranged on the horizontal partition 4, and the sensing probe of the temperature sensor Ⅰ12 is vertically inserted downward into the cavity of the heat preservation device 8;

[0037] The hot water of the hot water circulation supply device is transported to the insulation device 8 through the water inlet pipe 13 to achieve the insulation of the solution in the container 3. The temperature of the hot water in the insulation device 8 is monitored in real time through the temperature sensor I 12. When the temperature of the hot water in the insulation device 8 is lower than the preset minimum temperature threshold, part of the water is discharged through the water outlet pipe 7 and circulated back to the hot water circulation supply device. The hot water of the hot water circulation supply device is then transported and added to the insulation device 8 through the water inlet pipe 13 to increase the temperature of the hot water in the insulation device 8. When the temperature of the hot water in the insulation device 8 is higher than the preset maximum temperature threshold, the water inlet pipe 13 stops transporting and adding hot water to the insulation device 8.

[0038] The water inlet pipe 13 is provided with a water flow solenoid valve I, and the water outlet pipe 7 is provided with a water flow solenoid valve II; the water flow solenoid valve I and the water flow solenoid valve II are used to control the rate of adding hot water and the rate of discharging hot water in the insulation device 8 to achieve dynamic balance.

[0039] Embodiment 4: The structure of the device for maintaining the stable dispersion of magnetic particle suspension in this embodiment is basically the same as that of the device for maintaining the stable dispersion of magnetic particle suspension in embodiment 3, except that: Figure 1 As shown, the hot water circulation supply device includes a water tank 17, a heater 18 and a temperature control device 15. The heater 18 is arranged at the bottom of the water tank 17. A temperature sensor II 16 is arranged in the water tank 17. The temperature sensor II 16 is connected to the temperature control device 15 by electrical signals, and the heater 18 is connected to the temperature control device 15 by electrical signals.

[0040] The temperature sensor II 16 monitors the temperature of the hot water in the water tank 17 in real time. When the temperature of the hot water in the water tank 17 is lower than the preset minimum temperature threshold, the temperature control device 15 controls the heater 18 to heat the hot water in the water tank 17; when the temperature of the hot water in the water tank 17 is higher than the preset maximum temperature threshold, the temperature control device 15 controls the heater 18 to stop working, thereby realizing temperature control of the hot water in the water tank 17.

[0041] Embodiment 5: The structure of the magnetic particle suspension stable dispersion and holding device of this embodiment is basically the same as that of the magnetic particle suspension stable dispersion and holding device of embodiment 4, except that: a sound insulation pad 9 is provided at the connection between the top wall of the sound insulation box 2 and the stirring device 1; the sound insulation pad 9 can reduce noise pollution and reduce vibration of the stirring device when working;

[0042] The soundproof box body 2 is connected with a cabinet door via a hinge; the cabinet door is convenient for placing and taking out the heat preservation device.

[0043] The specific implementation modes of the present invention are described in detail above, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A device for maintaining stable dispersion of magnetic particle suspension, characterized in that: The invention comprises a soundproof box (2), a heat preservation device (8) and a container (3); a lifting platform (19) is arranged at the bottom center of the soundproof box (2); the heat preservation device (8) is arranged on the lifting platform (19); an ultrasonic generator (14) is arranged between the inner wall (5) and the outer wall (6) of the heat preservation device (8); a probe of the ultrasonic generator (14) passes through the inner wall (5) of the heat preservation device (8) and extends into the cavity of the heat preservation device (8); the container (3) is arranged in the cavity of the heat preservation device (8); the container (3) is filled with magnetic particles and a solvent; a stirring device (1) is fixedly arranged at the top wall center of the soundproof box (2); a stirring paddle (10) of the stirring device (1) extends vertically downward to the bottom of the container (3).

2. The device for maintaining stable dispersion of magnetic particle suspension according to claim 1, characterized in that: A horizontal partition (4) is fixedly arranged at the top of the heat preservation device (8), a container through hole is opened at the center of the horizontal partition (4), the top of the container (3) is located in the container through hole, and a buffer annular gasket (11) is arranged between the container (3) and the container through hole of the horizontal partition (4).

3. The device for maintaining stable dispersion of magnetic particle suspension according to claim 2, characterized in that: It also includes a hot water circulation supply device, a water inlet pipe (13) is buried in the top of the side wall of the heat preservation device (8), a water outlet pipe (7) is buried in the bottom of the side wall of the heat preservation device (8), the water inlet pipe (13) is externally connected to the drain outlet of the hot water circulation supply device, and the water outlet pipe (7) is externally connected to the water inlet of the hot water circulation supply device, a temperature sensor I (12) is fixedly arranged on the horizontal partition (4), and the sensing probe of the temperature sensor I (12) is vertically inserted downward into the cavity of the heat preservation device (8).

4. The device for maintaining stable dispersion of magnetic particle suspension according to claim 3, characterized in that: The hot water circulation supply device comprises a water tank (17), a heater (18) and a temperature control device (15). The heater (18) is arranged at the bottom of the water tank (17). A temperature sensor II (16) is arranged in the water tank (17). The temperature sensor I (12) and the temperature sensor II (16) are both connected to the temperature control device (15) via electrical signals. The heater (18) is connected to the temperature control device (15) via electrical signals.

5. The device for maintaining stable dispersion of magnetic particle suspension according to claim 3, characterized in that: A water flow electromagnetic valve I is arranged on the water inlet pipe (13), and a water flow electromagnetic valve II is arranged on the water outlet pipe (7).

6. The device for maintaining stable dispersion of magnetic particle suspension according to claim 1, characterized in that: A sound insulation pad (9) is provided at the connection between the top wall of the sound insulation box (2) and the stirring device (1).

7. The device for maintaining stable dispersion of magnetic particle suspension according to claim 1, characterized in that: The soundproof box body (2) is connected with a cabinet door via a hinge.

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