Magnetic control separation device and method

Abstract

The invention provides a magnetic control separation device and method, and relates to the technical field of magnetic control separation, the device comprises: a separation channel, one end of which is provided with a feed inlet and the other end of which is provided with a discharge outlet, and a side plate of the separation channel is provided with a plurality of magnetic spherical filler particles; and the magnetic control unit can be used for fixing the spherical filler particles on the side plates and regulating and controlling the spherical filler particles to rotate relative to the side plates. When a medium needing to be separated flows through the separation channel, the spherical filler particles can be used for adsorbing target substances in the medium. The adsorption efficiency can be effectively improved, the magnetic field is used for fixing, regulating and controlling filler distribution, mechanical extrusion is avoided, the filler utilization rate of spherical filler particles is increased, and the service life of high-value filler is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of magnetic control separation technology, in particular to a magnetic control separation device and method. BACKGROUND

[0002] Microchannel technology has shown application potential in some fields, such as the particle manipulation chip detection system of CN113308372A in the field of biological detection, the wastewater degradation system of CN119551801A in the field of micro-chemical engineering, and the microchannel organic wastewater treatment system of CN118619487A, because it can provide sufficient contact conditions for fluid and filler and has lower requirements for the mechanical strength of the filler.

[0003] However, the application of this technology in the fields of adsorption separation and solid-phase extraction still has a significant gap. The core bottleneck is that: first, some microchannel systems are micron-scale, which cannot withstand the impact of high-throughput and high-concentration industrial wastewater; second, the arrangement of the filler in the existing microchannel technology is uncontrollable, which can easily cause microchannel blockage and cannot meet the industrial application requirements of adsorption separation and solid-phase extraction. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a magnetic control separation device and method that can solve the above-mentioned problems in the prior art.

[0005] To solve the above-mentioned problems, the present application provides a magnetic control separation device and method.

[0006] In a first aspect, the present application provides a magnetic control separation device, comprising a separation channel and a magnetic control unit; the separation channel is provided with a feed inlet at one end and a discharge outlet at the other end; the side plate of the separation channel is provided with spherical filler particles with magnetic properties; the magnetic control unit is used to adsorb and fix the spherical filler particles to the side plate and to control the rotation of the spherical filler particles relative to the side plate. When the medium to be separated flows through the separation channel, the spherical filler particles are used to adsorb the target substances in the medium.

[0007] The beneficial effects of the present application are: The magnetic control unit adsorbs the spherical filler particles to the side plate, and when the medium to be separated flows through the inside of the separation channel, the spherical filler particles on both sides of the separation channel adsorb the medium flow. At the same time, the magnetic control unit can cooperatively control the spherical filler particles, adjust the angle of the spherical filler particles, and make each surface of the spherical filler particles fully adsorb, thereby improving the actual adsorption effect. The present application uses magnetic field adsorption and control of filler distribution to avoid mechanical extrusion, improve the utilization rate of spherical filler particles, and prolong the service life of high-value fillers.

[0008] Optionally, the separation channel can comprise a plurality of separation channels, and the plurality of separation channels are arranged in series or in parallel.

[0009] Optionally, the separation channel comprises two side plates arranged oppositely, and the two side plates are arranged in parallel or at an angle; and the spherical filler particles on the two side plates are arranged symmetrically or staggered along the extension direction of the separation channel.

[0010] Optionally, a plurality of notches for accommodating the spherical filler particles are formed on the side plate, and the spherical filler particles are clamped in the notches; and the plurality of notches are arranged at intervals along the extension direction of the separation channel.

[0011] Optionally, the magnetic control unit comprises a permanent magnet control unit and an adjustable magnetic field control unit. The permanent magnet control unit comprises a permanent magnet and a soft magnet; a plurality of soft magnets correspond to a plurality of notches one by one, and the soft magnets are embedded in the corresponding notches; the permanent magnet is detachably connected to the side wall of the side plate away from the soft magnet; the permanent magnet is used for magnetizing the soft magnet; and the soft magnet is used for adsorbing and fixing the spherical filler particles in the notches. The adjustable magnetic field control unit comprises a controller and a conductive layer electrically connected to the controller, and a plurality of coils are arranged in the conductive layer; the plurality of coils are arranged on the side plate and correspond to the plurality of notches one by one. The coil is used for generating a magnetic force at the notch; the magnetic force is used for adsorbing the spherical filler particles in the notch, and driving the spherical filler particles to rotate in the notch.

[0012] Optionally, the side plate is integrated with a position feedback unit at the notch, and the position feedback unit is electrically connected to the controller. The controller determines whether the corresponding notch has the spherical filler particles based on the signal of the position feedback unit.

[0013] Optionally, the side plate is made of a magnetically conductive metal wall, or a conductive glass, or a resin material with a conductive coating.

[0014] Optionally, the magnetic control separation device further comprises a plurality of blocking blocks arranged in the flow path of the separation channel, for generating turbulent flow of the medium flowing in the flow path.

[0015] In a second aspect, the present application provides a separation method applied to the above-mentioned magnetic control separation device, which comprises: S10, adsorbing and fixing the spherical filler particles on the side plate of the flow path to configure the separation channel; S20, pumping the fluid medium to be separated into the separation channel, and the spherical filler particles remove the target substances of the fluid medium to be separated; S30, running for a preset time, and controlling the spherical filler particles to rotate by a preset angle by using the magnetic control unit, so as to change the windward surface of the spherical filler particles. S40, when the surface of the spherical filler particles in each direction is fully utilized, the three-way valve is used to switch the outlet of the separation channel to the filler particle recycling channel; S50, remove the permanent magnet, cancel the fixed adsorption force of the spherical filler particles and the side plate, and make the spherical filler particles enter the filler particle recycling channel.

[0016] Optionally, step S10 includes: slowly flushing the spherical filler particles into the separation channel with pure water, and sequentially adsorbing each spherical filler particle in the notch of the side plate by using the magnetic control unit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure diagram of the side plate of the magnetic control separation device of an embodiment of the present application; Figure 2 It is a structure diagram of the separation channel of the magnetic control separation device of an embodiment of the present application; Figure 3 It is another structure diagram of the separation channel of the magnetic control separation device of an embodiment of the present application; Figure 4 It is still another structure diagram of the separation channel of the magnetic control separation device of an embodiment of the present application; Figure 5 It is still another structure diagram of the separation channel of the magnetic control separation device of an embodiment of the present application; Figure 6 It is a specific structure diagram of the separation channel of the magnetic control separation device of an embodiment of the present application; Figure 7 It is a module diagram of the separation method of an embodiment of the present application; Figure 8 It is a flow diagram of the separation method of an embodiment of the present application.

[0018] Explanation of reference signs: 10, separation channel; 100, side plate; 101, notch; 110, spherical filler particle; 20, magnetic control unit; 210, permanent magnet control unit; 211, permanent magnet; 212, soft magnet; 220, adjustable magnetic field control unit; 221, controller; 222, conductive layer; 2220, coil; 300, occupation feedback unit; 400, blocking block. DETAILED DESCRIPTION

[0019] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, specific embodiments of the present application will be described in detail below with reference to the drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein, but rather, these embodiments are provided to make the present application more thorough and complete. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes, and are not intended to limit the scope of protection of the present application.

[0020] The term "comprising" and variations thereof as used herein are open-ended, that is "including, but not limited to"; the term "based on" is, at least based on part on; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions are given throughout the description. It should be noted that the concepts mentioned in the present application are merely used to distinguish different devices, modules or units, and are not intended to limit the functions performed by these devices, modules or units, or the sequence or interdependence of these functions.

[0021] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative rather than limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0022] As shown in Figures 1 to 7 The present embodiment provides a magnetic control separation device, which comprises a separation channel 10 and a magnetic control unit 20; the separation channel 10 is provided with a feed inlet at one end and a discharge outlet at the other end; the side plate 100 of the separation channel 10 is provided with spherical filler particles 110 with magnetism; the magnetic control unit 20 is used to adsorb and fix the spherical filler particles 110 to the side plate 100, and to control the rotation of the spherical filler particles 110 relative to the side plate 100; when the medium to be separated flows in the separation channel 10, the spherical filler particles 110 are used to adsorb the target substances in the medium.

[0023] Specifically, the side plate 100 is used to enclose the inner cavity of the separation channel 10, and the magnetic control unit 20 adsorbs the spherical filler particles 110 at the side plate 100. After the medium for separation flows through the inside of the separation channel 10, the spherical filler particles 110 on both sides of the separation channel 10 adsorb the medium flow. At the same time, the magnetic control unit 20 can cooperatively control the spherical filler particles 110, adjust the angle of the spherical filler particles 110, make each surface of the spherical filler particles 110 fully contact with the medium, and fully adsorb, thereby improving the actual adsorption effect. The embodiment uses magnetic field adsorption and regulates the distribution of the filler to avoid mechanical extrusion, improve the utilization rate of the spherical filler particles 110, and prolong the service life of the high-value filler.

[0024] Further, one end of the separation channel 10 is provided with a feed inlet, and the other end is provided with a discharge outlet. The side plate 100 of the separation channel 10 is provided with a plurality of spherical filler particles 110 with magnetism. It should be noted that a plurality of notches 101 for connecting the spherical filler particles 110 can be formed on the side plate 100, so that the spherical filler particles 110 can be clamped in the notches 101. The plurality of notches 101 are arranged at intervals along the extension direction of the separation channel 10. The shape of the notch 101 is a circular arc, and the radius corresponding to the circular arc matches the radius of the spherical filler particles 110. The depth of the notch 101 can be in the range of 1 / 10~1 / 2 of the radius of the spherical filler particles 110. In addition, a through hole can be formed on the side plate 100 for fluid inlet and outlet or filler replacement operation, reducing the downtime maintenance time and improving the operation continuity.

[0025] It can be understood that the spherical filler particles 110 are arranged on both sides of the separation channel 10, which cooperates with the magnetic control unit 20 to fully contact the medium to be separated with the filler, and to strengthen the adsorption capacity of the target substance in the medium. At the same time, the block 400 can be arranged in the channel flow path to generate turbulent flow, thin the boundary layer thickness, and enhance the turbulent effect, further break through the limitation of the boundary layer diffusion on the adsorption rate, and improve the overall separation efficiency.

[0026] With the help of the magnetic control unit 20, the spherical filler particles 110 can be stably fixed in the notches 101 to avoid displacement of the filler caused by fluid scouring, and the filler can be driven to rotate by the adjustable electromagnetic field to change the windward surface, so that the surfaces of the filler in all directions can be fully utilized, solving the problem of local overuse of the filler and low overall utilization rate in the traditional device.

[0027] Optionally, multiple separation channels 10 can be provided, and the multiple separation channels 10 can be connected in series or in parallel. The separation effect can be enhanced by connecting the separation channels 10 in series, and the flow direction of the inlet can be used as the interface, and the multiple units can be directly connected in series by using a quick connection method. For example, in order to save space, the separation channels 10 can be connected in series in a snake shape or in a plug-in form, and the plug-in form is preferred. The processing capacity can be expanded by connecting the separation channels 10 in parallel in a branch form.

[0028] Specifically, the separation channels 10 can be connected in series by using a quick connection, a plug-in form, or a snake shape, which can enhance the separation effect and meet the high-purity separation requirements such as deep removal of low-concentration target substances. The separation channels 10 can be connected in parallel in a branch form, which can directly expand the processing capacity and adapt to large-flow medium processing scenarios such as industrial wastewater scale processing.

[0029] Optionally, the separation channel 10 includes two oppositely arranged side plates 100, and the two side plates 100 can be arranged in parallel or at an angle, and the spherical filler particles 110 on the two side plates 100 are symmetrically or staggered arranged along the extension direction of the separation channel 10.

[0030] The cross-sectional shape of the separation channel 10 can be a parallelogram, a circle, or other regular shapes. In an embodiment, the cross-sectional shape of the separation channel 10 is a parallelogram, that is, the separation channel 10 is formed by four side plates 100, and each side plate 100 is provided with a slot 101 for accommodating and positioning the spherical filler particles.

[0031] Specifically, the cross-sectional size of the separation channel 10, such as the width or height, is not limited, and the width of the side plate 100 is preferably 1-5 mm; the flow cross-section in the flow direction can be of equal size or of a gradually changing form, which can be designed according to the actual pressure drop requirement and the performance of the filler, and the gradually expanding form is preferred, that is, the two side plates 100 are arranged at an angle.

[0032] Please refer to Figures 2 to 4 which respectively shows the cross-sectional view of the separation channel 10, including side-by-side equidistant, side-by-side gradually expanding, and staggered equidistant, etc. Among them, the size of the microsphere and the distance between the spherical filler particles 110 are only for illustration, and the actual required parameters need to be determined according to design calculation. It should be noted that the length of the separation channel 10 is set according to the specific separation target and the pressure drop requirement, and the length is preferably in the range of 0.2m-1m.

[0033] At the same time, the multiple cross-sectional arrangement modes such as side-by-side equidistant, side-by-side gradually expanding, and staggered equidistant, combined with the preferred cross-sectional size of 1-5mm and the preferred length of 0.2m-1m, can be accurately designed according to the separation target (target substance concentration, medium viscosity, and pressure drop requirement).

[0034] Optionally, the side plate 100 can adopt a magnetic metal wall, conductive glass or a resin material with a conductive coating, but is not limited thereto, and can be determined according to actual needs.

[0035] The device further comprises a plurality of blocking blocks 400 in the flow path of the separation channel 10, for generating turbulence in the medium flowing in the flow path. Since the adsorption rate is limited by the boundary layer diffusion, the boundary layer thickness needs to be thinned by flow field design, so that the baffles or blocking blocks can be arranged on the side wall or in the channel gap according to the requirements of the flow field to enhance the turbulence effect and improve the separation efficiency.

[0036] Specifically, the boundary layer thickness in the traditional flow field is large, which makes it difficult for the target substance or pollutant to quickly reach the surface of the filler. By arranging the blocking blocks 400 in the flow path, the medium flowing through can be forced to generate turbulence, and the turbulence effect can effectively "wash" the boundary layer near the surface of the filler, thin the boundary layer thickness, accelerate the transfer of the target substance from the medium body to the adsorption site of the filler, directly break through the diffusion limitation, and greatly improve the adsorption rate.

[0037] Optionally, the magnetic control unit 20 can be used to fix the spherical filler particles 110 to the side plate 100 and regulate the rotation of the spherical filler particles 110 relative to the side plate 100. Specifically, when the medium to be separated flows in the separation channel 10, the spherical filler particles 110 can adsorb the target substance in the medium.

[0038] The magnetic control unit 20 comprises a permanent magnet control unit 210 and an adjustable magnetic field control unit 220. The permanent magnet control unit 210 comprises a permanent magnet 211 and a soft magnet 212; a plurality of soft magnets 212 correspond to a plurality of notches 101, and the soft magnets 212 are embedded in the corresponding notches 101; the permanent magnet 211 is detachably connected to the side wall of the side plate 100 away from the soft magnet 212; the permanent magnet 211 is used to magnetize the soft magnet 212; and the soft magnet 212 is used to adsorb the spherical filler particles 110 in the notch 101.

[0039] The adjustable magnetic field control unit 220 comprises a controller 221 and a plurality of conductive layers 222 electrically connected to the controller 221, and a plurality of coils 2220 are arranged in the conductive layers 222. A plurality of coils 2220 are arranged in the side plate 100 and correspond one-to-one to a plurality of notches 101, for generating a magnetic force at the notch 101; the magnetic force is used to adsorb the spherical filler particles 110 in the notch 101 and drive the spherical filler particles 110 to rotate in the notch 101.

[0040] Specifically, the permanent magnet control unit 210 is used to provide a physical magnetic field, and a micro-magnetic cone array can be integrated in the channel wall by a micro-processing method. The magnetic cone is made of a material such as nickel, iron, or a magnetic alloy that is easy to magnetize. Under the magnetization of the external permanent magnet 211 magnetic field, the magnetic cone is magnetized to provide sufficient fixing force for the magnetic spherical filler particles 110 to resist the fluid scouring. Since no current needs to be applied during operation, it has the advantages of energy saving and no overheating phenomenon.

[0041] Optionally, the side plate 100 is integrated with a position feedback unit 300 at the slot 101, and the position feedback unit 300 is electrically connected to the controller 221. The controller 221 can determine whether the spherical filler particles 110 are installed in the corresponding slot 101 based on the signal of the position feedback unit 300. Through the linkage of the position feedback unit 300 integrated at the slot 101 of the side plate 100 and the controller 221, it can be detected in real time whether each slot 101 is installed with the spherical filler particles 110, and abnormal conditions such as “missing installation” and “falling off” can be fed back in time. This function can confirm the completeness of the filler installation before the device starts, and monitor the filler state during operation, so as to avoid the decrease of separation efficiency or flow field disorder caused by the lack of filler, and significantly improve the reliability and fault tolerance of the device operation. It should be noted that the core function of the position feedback unit is to detect whether there is an object occupying the target area, and convert the “occupied” or “unoccupied” state into an electrical signal to feed back to the controller. Common sensors can be used.

[0042] Specifically, the adjustable magnetic field control unit 220 can generate an electromagnetic field for adjusting the directional motion of the spherical filler particles 110. An electrically conductive layer 222 is arranged inside the channel wall and integrated with a small coil 2220. The coil 2220 is used to receive an electric control signal to generate, change, or stop the corresponding electromagnetic field: the on-off control of the current controls the presence or absence of the magnetic field, and the adjustment of the current size can adjust the magnetic field strength; by dynamically changing the current size of different parts, the directional motion of the magnetic spherical filler particles 110 can be controlled, so that different parts of the spherical filler particles 110 have the opportunity to be the windward surface, thereby improving the material utilization rate. In addition, each site of the electromagnetic field has an occupying feedback function, which can feed back in real time whether the spherical filler particles 110 are fixed at each site.

[0043] It should be noted that the spherical filler particles 110 need to have separation performance for target substances or good removal ability for pollutants. The magnetic spherical filler particles 110 can be a natural paramagnetic adsorbent, or a spherical filler particle 110 made of a powder adsorbent by a molding technology; if the adsorbent itself has no magnetism, it can be coated or modified to have paramagnetism, and then made into a spherical filler particle 110 by a molding technology. Specifically, the size of the spherical filler particles 110 can be 0.1-1 mm.

[0044] Please refer to Figure 7and Figure 8 Based on the above magnetic control separation device, the present disclosure also provides a separation method applied to any of the above magnetic control separation devices, which specifically comprises the following steps: S10: adsorb the spherical filler particles 110 on the flow path side plate 100 to configure the separation channel 10; By presetting the distribution points of the spherical filler particles 110 by the electromagnetic field, the magnetic spherical filler particles 110 are slowly filled into the microchannel by pure water, and each spherical filler particle 110 is sequentially adsorbed in the slot 101 of the side plate 100 by the magnetic control unit 20. The process is repeated several times to ensure that all magnetic spherical filler particles 110 are fixed with spherical filler particles 110. At the same time, the permanent magnet 211 is inserted into the corresponding position of the microchannel separator, so that the soft magnet 212 in the positioning groove is magnetized.

[0045] It can be understood that the step S10 adopts the combination of electromagnetic field preset point, pure water filling and step-by-step magnetization, and the double fixation of magnetizing the soft magnet 212 by the permanent magnet 211, which can ensure that the spherical filler particles 110 are accurately adsorbed on the preset magnetic point, and the repeated operation can avoid the problems of "missing" and "mispositioning". Compared with the traditional filler filling method, this step does not need mechanical extrusion, which not only protects the integrity of high-value fillers, but also forms a uniform filler distribution, laying a stable initial condition for subsequent efficient separation.

[0046] S20: Pump the fluid medium to be separated into the separation channel 10, and the spherical filler particles 110 remove the impurities of the fluid medium to be separated.

[0047] S30: Run for a preset time, and control the spherical filler particles 110 to rotate by a preset angle by the magnetic control unit 20 to change the windward surface.

[0048] S40: When the surfaces of the spherical filler particles 110 in all directions are fully utilized, the outlet of the separation channel 10 is switched to the filler particle recovery channel by the three-way valve.

[0049] Step S30 drives the spherical filler particles 110 to rotate by opening the adjustable electromagnetic field, which can dynamically change the windward surface of the filler. Combined with the multiple adjustments of step S40, the surfaces of the filler in all directions can be fully contacted with the medium to be separated, which completely solves the problem of "local saturation and local idling" of traditional fixed fillers, greatly improves the adsorption capacity and use efficiency of high-value fillers. At the same time, the rotation process can assist in breaking the medium boundary layer, further strengthening the adsorption effect of the target substance and improving the separation purity.

[0050] S50: Remove the permanent magnet 211 to cancel the fixed adsorption force between the spherical filler particles 110 and the side plate 100, so that the spherical filler particles 110 enter the saturated filler tank of the filler particle recovery channel.

[0051] Specifically, by withdrawing the permanent magnet 211, the fixed adsorption force between the spherical filler particles 110 and the side plate 100 is cancelled, so that the spherical filler particles 110 can be separated from the side plate 100. At the same time, the adjustable electromagnetic field guides the spherical filler particles 110 into the saturated filler tank.

[0052] It can be understood that, by means of the fixed force cancellation of the permanent magnet 211 and the adjustable electromagnetic field guidance of step 50, the ordered discharge of the spherical filler particles 110 can be realized, and the collection of the saturated filler can be completed without disassembling the channel. Compared with the complex operation of disassembling the bed body for changing the filler in the traditional device, this step not only reduces the difficulty of manual operation and reduces the maintenance time of the device, but also avoids the loss of the filler during the discharge process, further reducing the operation cost.

[0053] In summary, the present disclosure provides a magnetic control separation device and method, which forcibly generates turbulent flow by arranging the blocking block 400 in the separation channel 10, effectively thins the medium boundary layer thickness, breaks through the diffusion limitation, accelerates the transfer of the target substance to the filler surface, and greatly improves the adsorption rate and separation efficiency. At the same time, by magnetizing the soft magnet 212 (or micro-magnetic cone array) with the detachable permanent magnet 211, a strong fixed force is provided for the filler to resist fluid scouring, and no power supply is required, which has the advantages of energy saving and anti-overheating, reducing the operation energy consumption and fault risk. By combining the controller 221 and the coil 2220, the filler can be driven to rotate to change the windward surface, so that each part of the filler can participate in adsorption, completely solving the problem of "local saturation and local idling" of the traditional fixed filler, greatly improving the utilization rate and service life of the high-value filler.

[0054] The overall scheme replaces mechanical fixation with magnetic field regulation, replaces static adsorption with dynamic adsorption, and adapts to multiple scenarios with flexible structure, effectively solving the problems of uneven flow field, low filler utilization rate, high pressure drop, and difficult maintenance of traditional bed column separators. It can not only meet the conventional needs of chemical purification and industrial wastewater treatment, but also adapt to special scenarios such as nuclear power wastewater treatment that have strict requirements on space and efficiency, and has advanced technology and practical application value.

[0055] Although the present disclosure is as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. A magnetically controlled separation device, characterized in that, It includes a separation channel (10) and a magnetic control unit (20); the separation channel (10) is provided with a feed inlet at one end and a discharge outlet at the other end; the side plate (100) of the separation channel (10) is provided with magnetic spherical filler particles (110); the magnetic control unit (20) is used to adsorb and fix the spherical filler particles (110) to the side plate (100) and to control the rotation of the spherical filler particles (110) relative to the side plate (100); When the medium to be separated flows through the separation channel (10), the spherical packing particles (110) are used to adsorb the target substance in the medium.

2. The magnetically controlled separation device according to claim 1, characterized in that, The separation channel (10) may include multiple channels, and the multiple separation channels (10) are connected in series or in parallel.

3. The magnetically controlled separation device according to claim 1, characterized in that, The separation channel (10) includes two side plates (100) arranged opposite to each other, which are parallel or at an angle; and the spherical filler particles (110) on the two side plates (100) are arranged symmetrically or staggered along the extension direction of the separation channel (10).

4. The magnetically controlled separation device according to claim 1, characterized in that, The side plate (100) is provided with a plurality of slots (101) for accommodating and positioning the spherical filler particles (110); the plurality of slots (101) are spaced apart along the extension direction of the separation channel (10).

5. The magnetically controlled separation device according to claim 4, characterized in that, The magnetic control unit (20) includes a permanent magnet control unit (210) and an adjustable magnetic field control unit (220). The permanent magnet control unit (210) includes a permanent magnet (211) and a soft magnet (212); a plurality of soft magnets (212) correspond one-to-one with a plurality of slots (101), and the soft magnets (212) are embedded in the corresponding slots (101); the permanent magnets (211) are detachably connected to the side wall of the side plate (100) away from the soft magnets (212); the permanent magnets (211) are used to magnetize the soft magnets (212); the soft magnets (212) are used to attract and fix the spherical filler particles (110) into the slots (101); The adjustable magnetic field control unit (220) includes a controller (221) and a plurality of coils (2220) electrically connected to the controller (221). The plurality of coils (2220) are disposed on the side plate (100) and correspond one-to-one with the plurality of slots (101). The coil (2220) is used to generate a magnetic force at the corresponding slot (101), which is used to drive the spherical filler particles (110) to rotate within the slot (101).

6. The magnetically controlled separation device according to claim 5, characterized in that, The side plate (100) integrates a occupancy feedback unit (300) at the slot (101), and the occupancy feedback unit (300) is electrically connected to the controller (221). The controller (221) determines whether there are spherical filler particles (110) in the corresponding slot (101) based on the signal from the occupancy feedback unit (300).

7. The magnetically controlled separation device according to claim 1, characterized in that, The side plate (100) is made of magnetically conductive metal wall, or conductive glass, or resin material with conductive coating.

8. The magnetically controlled separation device according to claim 1, characterized in that, It also includes several blocking blocks (400) located in the flow path of the separation channel (10) to generate turbulence in the medium flowing through the flow path.

9. A separation method applied to the magnetically controlled separation device according to any one of claims 1 to 8, characterized in that, include: S10, spherical packing particles (110) are fixed and adsorbed onto the flow path side plate (100) to configure the separation channel (10). S20, the fluid medium to be separated is pumped into the separation channel (10), and the spherical packing particles (110) remove the target substance of the fluid medium to be separated; S30, run for a preset time, use the magnetic control unit (20) to control the rotation of the spherical packing particles (110) by a preset angle, so as to change the windward side of the spherical packing particles (110); S40, after the surfaces of the spherical filler particles (110) in all directions have been fully utilized, the outlet of the separation channel (10) is connected to the filler particle recycling channel. S50, remove the permanent magnet (211), cancel the fixed adsorption force between the spherical filler particles (110) and the side plate (100), and let the spherical filler particles (110) enter the filler particle recycling channel.

10. The separation method of the magnetically controlled separation device according to claim 9, characterized in that, Step S10 includes: using pure water to slowly flush spherical filler particles (110) into the separation channel (10), and using the magnetic control unit (20) to sequentially adsorb each spherical filler particle (110) into the slot (300) of the side plate (100).

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