Energy-saving hybrid sieve plate extraction column system

Abstract

The application discloses an energy-saving hybrid sieve plate extraction column system and relates to the technical field of towers.The system realizes reciprocating vibration and circumferential motion of the sieve plate by intermittently inputting energy into the hybrid sieve plate extraction column by the driving magnet, reduces energy consumption and failure rate, and is not affected by changes in the size of the tower.The system comprises a tower body assembly and a control unit;the tower body assembly is provided with a top assembly, a bottom skirt assembly, a transmission shaft and a bottom support assembly;the top assembly comprises a shell and an axial driving magnet assembly;the transmission shaft is provided with an axial driven magnet;the bottom support assembly comprises a support cylinder and a spring;the tower body assembly is provided with a circumferential driving magnet assembly;the bottom of the sieve plate is provided with a circumferential driven magnet;the axial driving magnet assembly and the circumferential driving magnet assembly are both made of soft magnet;the axial driven magnet and the circumferential driven magnet are both made of hard magnet;and the control unit can control the magnetization and demagnetization frequency of the two driving magnet assemblies.

Description

Technical Field

[0001] This application relates to the field of tower equipment technology, and in particular to an energy-saving hybrid sieve plate extraction tower system. Background Technology

[0002] An extraction tower is a mass transfer device commonly used in the petrochemical, nuclear chemical, environmental, and hydrometallurgical industries. It achieves the transfer of the extracted component from one phase to another by bringing two immiscible fluid phases into contact. Extraction towers offer advantages such as large throughput, small footprint, and relatively simple structure.

[0003] Various extraction towers can be constructed based on the presence or absence of energy input. Simple, non-stirred extraction towers mainly include sieve tray towers, packed towers, and spray towers. Extraction towers using pulsed energy input mainly include pulsed packed towers and pulsed sieve tray towers. Extraction towers with mechanical stirring input mainly include rotary disc towers, Scheibel mechanically stirred towers, Kühni towers, and Karr towers (reciprocating vibrating sieve tray towers). Among these, reciprocating sieve tray extraction towers have advantages such as high throughput, high efficiency, ease of handling materials containing solids, relatively uniform distribution of external energy, suitability for handling easily emulsifiable systems, and low maintenance and operating costs, leading to their increasingly widespread application.

[0004] Reciprocating sieve plate extraction towers, also known as vibrating sieve plate towers, apply external energy to the fluid within the tower through the reciprocating motion of a main shaft carrying a number of sieve plates. This increases the contact area between the two phases of the fluid, promoting thorough mixing. Key performance indicators for reciprocating sieve plate extraction towers include dispersed phase retention fraction φ, dispersed phase droplet diameter d32, characteristic velocity u0, mass transfer specific surface area a, continuous phase axial mixing coefficient Ec, and overall mass transfer coefficient koca. The external energy applied to the fluid is primarily reflected in the vibration intensity Af, an index composed of sieve plate amplitude A and vibration frequency f. By altering the amplitude and frequency of the vibrating sieve plate tower, various fluid dynamics and mass transfer performance indicators can be optimized to achieve the tower's optimal performance.

[0005] Traditional reciprocating sieve plate extraction columns typically use a motor to drive the column's drive shaft via an eccentric wheel combination to achieve reciprocating motion. The continuous agitation of the sieve plates enhances the premixing and backmixing of the dispersed phase, causing the fluid flow within the column to deviate more significantly from the ideal plunger flow. This also increases the probability of the fluid operating in the emulsion zone within the extraction column, affecting mass transfer efficiency. Therefore, although reciprocating sieve plate extraction columns have obvious advantages, their continuous operation of auxiliary moving equipment results in high energy consumption and susceptibility to damage. Furthermore, the presence of the drive mechanism hinders column scale-up. Consequently, the application of reciprocating sieve plate extraction columns has progressed slowly in recent years. Summary of the Invention

[0006] The embodiments of this application provide an energy-saving hybrid sieve plate extraction tower system. By intermittently inputting energy into the hybrid sieve plate extraction tower through a driving magnet, the reciprocating vibration and circular motion of the sieve plate are realized. This not only reduces energy consumption and lowers the failure rate, but also is not affected by changes in the size of the tower.

[0007] To achieve the above objectives, embodiments of this application provide an energy-saving hybrid sieve plate extraction tower system, including a tower body assembly and a control unit. The tower body assembly has a top assembly at the top, a skirt assembly at the bottom, and an internal drive shaft and bottom support assembly. The top assembly includes a housing mounted on the tower body assembly. An axial drive magnet assembly is disposed within the housing. Multiple sieve plates are mounted on the drive shaft. The upper end of the drive shaft extends out of the tower body assembly and enters the housing. An axial driven magnet is disposed at the upper end of the drive shaft. The axial driven magnet is located below the axial drive magnet assembly. The axial drive magnet assembly can attract or repel the axial driven magnet, thereby driving the sieve plates to reciprocate up and down. The bottom support assembly includes a support cylinder fixed to the bottom wall of the tower assembly and a spring disposed within the support cylinder; a circumferential driven magnet is provided at the bottom of the sieve plate; a circumferential driving magnet assembly is provided inside the tower assembly; the circumferential driving magnet assembly can attract or repel the circumferential driven magnet to drive the sieve plate to swing around the transmission shaft; both the axial driving magnet assembly and the circumferential driving magnet assembly are made of soft magnets; both the axial driven magnet and the circumferential driven magnet are made of hard magnets; the control unit is electrically connected to both the axial driving magnet assembly and the circumferential driving magnet assembly; the control unit can control the charging and demagnetizing frequencies of the axial driving magnet assembly and the circumferential driving magnet assembly.

[0008] Furthermore, the tower assembly includes a cylindrical body and upper and lower end caps sealed to both ends of the cylindrical body; the cylindrical body is provided with an extract phase outlet, a raffinate phase outlet, a feed liquid inlet, and an extractant inlet; control valves are provided at both the feed liquid inlet and the extractant inlet; the circumferential drive magnet assembly is fixedly connected to the inner wall of the cylindrical body.

[0009] Furthermore, the housing includes a conical shell and a top cover connected to the upper port of the conical shell; the conical shell is a hollow frustum; the top cover is a circular plate; the axial drive magnet assembly is connected to the bottom of the top cover by countersunk screws; a rain cap is provided on the upper surface of the top cover, and the rain cap is located above the countersunk screws.

[0010] Furthermore, the axial drive magnet assembly includes an axial drive magnet arranged in a vertical direction and a first winding coil disposed outside the axial drive magnet; the axial drive magnet is a cylinder; the first winding coil is connected to the control unit through two wires; the axial driven magnet is also a cylinder.

[0011] Furthermore, the circumferential drive magnet assembly comprises two sets; the two sets of circumferential drive magnet assemblies are symmetrically arranged with respect to the centerline of the tower assembly; each set of circumferential drive magnet assemblies includes a circumferential drive magnet and a second winding coil disposed outside the circumferential drive magnet; the circumferential drive magnet has a cuboid structure and is arranged horizontally; the second winding coil is connected to the control unit via two wires; the circumferential driven magnet also comprises two, the two circumferential driven magnets are symmetrically arranged with respect to the axis of the sieve plate; the circumferential driven magnet has a cuboid structure and is arranged horizontally.

[0012] Furthermore, the side wall of the support cylinder has multiple through holes for the inlet and outlet of liquid inside the tower.

[0013] Furthermore, the axial driven magnet is threadedly connected to the drive shaft.

[0014] Furthermore, it also includes a detection unit; the detection unit includes a temperature sensor, two flow meters and multiple conductivity meters; the temperature sensor is located on the outside of the top assembly; the two flow meters are respectively located at the feed liquid inlet and the extractant inlet; the multiple conductivity meters are evenly distributed along the axial direction on the side wall of the tower assembly.

[0015] Furthermore, the control unit is communicatively connected to the detection unit; the control unit is configured to: receive information collected by the temperature sensor and the conductivity meter, process it to obtain axial drive magnet heating data and the axial mixing pattern in the tower; receive information collected by the flow meter, compare it with a preset value, and then adjust the opening of the control valve according to the comparison result until the data collected by the flow meter meets the requirements.

[0016] Furthermore, it also includes a monitoring unit, which can display axial drive magnet heating data, conductivity figures and images, charging and demagnetizing frequency settings, two-phase flow rates, and total experimental time.

[0017] This application has the following advantages over the prior art:

[0018] The energy-saving hybrid sieve plate extraction tower system of this application relies on magnetic repulsion and spring rebound force, requiring only instantaneous low-intensity pulse current to achieve up-and-down and circumferential motion of the sieve plate, thereby reducing energy consumption, lowering the failure rate, and improving extraction efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the tower body components in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the top component in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the top sealing assembly in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the circumferential drive magnet assembly in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the sieve plate structure in the energy-saving hybrid sieve plate extraction tower system of this application embodiment;

[0026] Figure 7 This is a schematic diagram of the bottom support component in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0027] Figure 8 This is a schematic diagram showing the magnetic pole direction of the sieve plate in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application when the sieve plate is at its lower limit.

[0028] Figure 9 This is a schematic diagram showing the magnetic pole direction of the sieve plate in the energy-saving hybrid sieve plate extraction tower system of this application when it is at its upper limit.

[0029] Figure 10 This is a schematic diagram of the charging and demagnetizing switching circuit of the axial drive magnet and circumferential drive magnet assembly in the energy-saving hybrid sieve plate extraction tower system of this application embodiment.

[0030] Figure 11 This is a schematic diagram of the front-end operation panel in the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application;

[0031] Figure 12This is a flowchart of the energy-saving hybrid sieve plate extraction tower system according to an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, as fixed connection, detachable connection, or integral connection; those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0036] Reference Figure 1 This application provides an energy-saving hybrid sieve plate extraction tower system, including a tower body assembly 1, a control unit 2, a detection unit 3, and a monitoring unit 4. The tower body assembly 1 has a top assembly 5 at the top and a skirt assembly 6 at the bottom. Inside, there is a drive shaft 7 and a bottom support assembly 8. Multiple sieve plates 9 evenly distributed along the axial direction are fixedly connected to the middle of the drive shaft 7. The bottom support assembly 8 is fixedly connected to the bottom of the tower body assembly 1 and located below the drive shaft 7.

[0037] Reference Figure 2The tower assembly 1 includes a cylindrical body 101 and upper end caps 102 and lower end caps 103 sealed at both ends of the cylindrical body 101. The cylindrical body 101 is provided with an extract phase outlet 104, a raffinate phase outlet 105, a feed liquid inlet 106, and an extractant inlet 107. The bottom of the shell 51 is welded to the upper surface of the upper end cap 102. The skirt assembly 6 is welded to the lower surface of the lower end cap 103. The circumferential drive magnet assembly 11 is welded to the inner wall of the cylindrical body 101. The support cylinder 81 is welded to the inner wall of the lower end cap 103. The drive shaft 7 is sealed to the top of the tower assembly 1 via a top sealing assembly 18.

[0038] Reference Figure 3 and Figure 4 The top assembly 5 includes a downward-facing housing 51 welded to the upper end cap 102. An axial drive magnet assembly 52 is housed within the housing 51. The housing 51 includes a conical shell 511 and a top cover 512 welded to the upper end of the conical shell 511. The conical shell 511 is a hollow frustum. The top cover 512 is a circular plate. The axial drive magnet assembly 52 is connected to the bottom of the top cover 512 by countersunk screws 53. A rain cap 54, a downward-facing hollow cylinder, is provided on the upper surface of the top cover 512, positioned above the countersunk screws 53. This prevents rainwater and other gaseous, liquid, and solid impurities from entering the housing 51 through the screw holes in the top cover.

[0039] The upper end of the drive shaft 7 extends out of the upper end cap 102 and enters the housing 51, with the drive shaft 7 and the upper end cap 102 sealed together by a top sealing assembly 18. An axial driven magnet 10 is provided at the upper end of the drive shaft 7. The axial driven magnet 10 is located directly below the axial drive magnet assembly 52. ​​The axial drive magnet assembly 52 can attract or repel the axial driven magnet 10 to drive the sieve plate 9 to reciprocate up and down. Specifically, the axial driven magnet 10 is threadedly connected to the drive shaft 7. That is, the top of the drive shaft 7 has an external thread, and the bottom of the axial driven magnet 10 has an internal thread that matches the external thread. This facilitates the replacement of the axial driven magnet 10.

[0040] Reference Figure 1 and Figure 3The axial drive magnet assembly 52 includes an axial drive magnet 521 arranged vertically and a first winding coil 522 disposed outside the axial drive magnet 521. The axial drive magnet 521 is cylindrical. The first winding coil 522 is connected to the control unit 2 via two wires 55. Specifically, after the wires 55 pass through holes in the side wall of the conical shell 511, the holes are sealed with epoxy resin to fix the wires 55. The axial driven magnet 10 is also cylindrical. In this way, the magnetic pole direction of the axial drive magnet 521 can be adjusted by passing a short-term DC current of about a few amperes through the first winding coil 522. This short-term current of tens of milliseconds generates an instantaneous magnetic field through the first winding coil. Since the current only needs to be applied instantaneously when changing the magnetic pole direction, and the time consumption is very short, it has the advantages of energy saving, no heat generation, and easy control.

[0041] Furthermore, the basic principle of driving the magnet is expressed by the following formula:

[0042]

[0043] Reference Figure 10 The left side indicates an input AC voltage of 220V. The AC power is rectified by a transformer and diodes to obtain the 12V DC voltage required to drive the magnet. The direction of the DC power is adjusted by a double-pole double-throw switch. The alternating illumination of the two LEDs indicates the charging and demagnetizing process of the driving magnet.

[0044] Reference Figure 4 The top sealing assembly 18 includes a retaining ring 181 and an elastomer 182. The elastomer 182 is placed in the central groove of the retaining ring 181 and is welded to the upper end cap 102. Under the pressure inside the tower, the Y-shaped side of the elastomer 182 near the center of the tower pushes upward, causing the side of the elastomer 182 to fit against the shaft, achieving an initial seal. The Y-shaped end tilts upward, allowing the internal pressure gas to enter the Y-shaped groove of the elastomer 182. Under the pressure inside the groove, the elastomer 182 fits more tightly against the shaft, achieving a seal. The other side of the Y-shaped elastomer 182 is pressed tightly into the groove of the retaining ring 181 by the internal pressure, improving the overall sealing performance.

[0045] Reference Figure 5 Two sets of circumferential drive magnet assemblies 11 are welded to the inner wall of the cylinder 101. The two sets of circumferential drive magnet assemblies 11 are symmetrically arranged with respect to the centerline of the tower assembly 1. Each set of circumferential drive magnet assemblies 11 includes a circumferential drive magnet assembly 111 and a second winding coil 112 disposed outside the circumferential drive magnet assembly. The circumferential drive magnet assembly 111 has a cuboid structure and is arranged along the front-to-back direction; for example, the N pole of the circumferential drive magnet assembly 111 faces forward, and the S pole faces backward. The second winding coil 112 is also connected to the control unit 2 via two wires.

[0046] Reference Figure 6 The sieve plate 9 includes a disc body 91 and a central hole 92 and a downcomer hole 93 disposed on the disc body 91. Two circumferential driven magnets 12 are welded to the bottom of the sieve plate 9. The two circumferential driven magnets 12 are symmetrically arranged with respect to the axis of the sieve plate 9. The circumferential driven magnets 12 are also cuboid structures and are arranged along the front-back direction. Both the axial drive magnet assembly 52 and the circumferential drive magnet assembly 11 are made of soft magnets, while both the axial driven magnet 10 and the circumferential driven magnets 12 are made of hard magnets. In this way, the circumferential drive magnet assembly 11 can attract or repel the circumferential driven magnets 12, thereby driving the sieve plate 9 to swing around the drive shaft 7. As a result, the magnetic attraction is stronger and the rotation is smoother. It should be noted that the circumferential rotation of the sieve plate 9 is not a continuous full-circumference rotation but a small-angle oscillation.

[0047] Reference Figure 7 The bottom support assembly 8 includes a support cylinder 81 fixed to the bottom wall of the lower head 103 and a spring 82 disposed inside the support cylinder 81. The spring 82 is a high-stiffness spring. The side wall of the support cylinder 81 has multiple through holes 811 for the inlet and outlet of the liquid in the tower. This prevents the liquid in the tower brought in by the drive shaft 7 when it moves downward from being unable to be discharged, thereby affecting the compression performance of the spring 82.

[0048] Continue to refer to Figure 1 The skirt assembly 6 is the basic structure of the tower and is existing technology, so it will not be described in detail here.

[0049] The detection unit 3 includes a temperature sensor 31, two flow meters, and multiple conductivity meters 32. A connecting pipe is provided on the outer side of the axial drive magnet assembly 52, and the outer end of the connecting pipe passes through the conical shell 511 and connects to the temperature sensor 31. The two flow meters are respectively located at the feed liquid inlet 16 and the extractant inlet 17. Multiple conductivity meters 32 are evenly distributed axially on the side wall of the tower assembly 1. Therefore, the temperature of the drive magnet, the feed liquid inlet flow rate, the extractant inlet flow rate, and the axial mixing within the tower can be detected in real time in the extraction tower system of this embodiment. It should be noted that the axial mixing within the tower is detected by injecting a conductive liquid into the tower and calculating the conductivity of different liquid layers; this method is conventional and will not be described in detail here.

[0050] Control unit 2 is an industrial computer. The industrial computer is electrically connected to the axial drive magnet assembly 52, the circumferential drive magnet assembly 11, the temperature sensor 31, the flow meter, and the conductivity meter 32. The industrial computer can control the magnetization and demagnetization frequencies of the axial drive magnet assembly 52 and the circumferential drive magnet assembly 11, as well as the flow rate of the fluid flowing through the flow meter; it can also receive information collected by the temperature sensor 31 and the conductivity meter 32, process it, and obtain the heating data of the drive magnets (i.e., the temperature value of the drive magnets) and the axial mixing pattern within the column. Therefore, control unit 2 can control the magnetization and demagnetization frequency, the feed liquid inlet flow rate, and the extractant inlet flow rate.

[0051] Reference Figure 11 The monitoring unit 4 is a front-end operation panel. The panel interface includes modules such as temperature and conductivity digital and image display, charging and demagnetizing frequency setting, two-phase flow display, experimental data saving, and total experimental time. It can display the heating data of the driving magnet, conductivity digital and image, charging and demagnetizing frequency setting, two-phase flow, experimental data, total experimental time, and other experimental parameters.

[0052] The working principle of the energy-saving hybrid sieve plate extraction tower system in this application embodiment is as follows:

[0053] Reference Figure 8 Since both the axial drive magnet assembly 52 and the circumferential drive magnet assembly 11 are made of soft magnetic materials, which have the characteristic of strong magnetism while being able to change their magnetic pole direction by a relatively weak external magnetic field, the axial driven magnet 10 and the circumferential driven magnet 12 are both made of hard magnetic materials. Based on the stable magnetic properties of hard magnetic materials, they can be arranged with the N pole facing upwards and the S pole facing downwards (or the S pole facing upwards and the N pole facing downwards). Therefore, a short-term DC current of about a few amperes can be passed into the first winding coil 522. The instantaneous magnetic field generated by the short-term current of tens of milliseconds through the first winding coil 522 can change the polarization direction of the axial drive magnet 521. Specifically, when the drive shaft 7 is in the upper limit position, the magnetism of the axial drive magnet 521 is adjusted so that the bottom magnetic pole of the axial drive magnet 521 is aligned with the top magnetic pole of the axial driven magnet 10 (S pole facing up, N pole facing down). At this time, according to the law of magnetic repulsion, under the magnetic repulsion force generated by the axial drive magnet 521, the axial driven magnet 10 drives the drive shaft 7 and the sieve plate 9 on it to move downward together until the magnetic repulsion force and the compression reaction force of the spring 82 in the bottom support assembly 8 are balanced and stop.

[0054] It should be noted that although the magnetic repulsion force is applied very quickly due to the very rapid change in the magnetic pole direction, the magnetic repulsion force will decrease because the stiffness of the spring 82 increases with the increase in compression and the distance between the axial driven magnet 10 and the axial driving magnet 521 gradually increases. Therefore, the problem of rapid start and stop of the sieve plate 9 will not occur.

[0055] Reference Figure 9 After the sieve plate 9 reaches its lower limit position, reverse (and opposite) current is then introduced into the first winding coil 522. Figure 8A short-term pulse of DC current (currents in opposite directions shown) causes the magnetic poles of the axial drive magnet 521 to be reversed (N up, S down). At this time, since there is no longer a repulsive force between the axial drive magnet 521 and the axial driven magnet 10, under the combined action of the rebound force of the spring 82 and the magnetic attraction force of the axial drive magnet 521, the axial driven magnet 10 drives the transmission shaft 7 and the sieve plate 9 on it to move upward together. As the sieve plate 9 moves upward, the rebound force of the spring 82 gradually decreases, and the magnetic attraction force continues to increase until the axial driven magnet 10 and the axial drive magnet 521 are attracted together. At this time, the sieve plate 9 reaches the upper limit position.

[0056] It should be noted that during this process, due to the need to overcome the weight of the axial driven magnet 10, the axial driving magnet 521 and the sieve plate 9, as well as the weight of the liquid on the sieve plate 9, and because the moving distance is very small, there will be no problem of sudden stop impact caused by excessive speed.

[0057] Similarly, since the circumferential drive magnet assembly 11 inside the cylinder 101 and the circumferential driven magnet 12 at the bottom of the sieve plate 9 are both arranged horizontally, for example, roughly in the front-back direction, i.e., with their magnetic poles facing the front-back direction, when the sieve plate 9 needs to rotate circumferentially, it is only necessary to change the magnetism of the circumferential drive magnet assembly 11 through the control unit 2, so that the magnetic poles of the two opposite faces of the circumferential drive magnet assembly 11 and the circumferential driven magnet 12 are opposite. Under the action of magnetic attraction, the sieve plate 9 can rotate around the axis of the transmission shaft 7 by a certain angle. When the sieve plate 9 needs to rotate in the opposite direction, the magnetism of the circumferential drive magnet assembly 11 is changed through the control unit 2, so that the magnetic poles of the two opposite faces of the circumferential drive magnet assembly 11 and the circumferential driven magnet 12 are in the same direction.

[0058] Since the current only needs to be applied instantaneously when the magnetic pole direction is changed, and the time consumption is very short, it has the advantages of energy saving, no heat generation, and easy control. In addition, by utilizing the characteristics of hard and soft magnetic materials, the sieve plate on the moving shaft moves up and down and in a circular motion, which promotes the dispersion and mixing of liquid by spraying it into the sieve holes, enhances contact mass transfer, and the relatively low vibration intensity will not increase axial mixing.

[0059] Reference Figure 12 The working process of the energy-saving hybrid sieve plate extraction tower system in this application embodiment is as follows:

[0060] Step 1: Input the feed liquid inlet velocity and extractant inlet velocity into the information input module of the 13LabVIEW system front control panel and transmit them to the industrial control computer. The industrial control computer generates feed liquid inlet velocity and extractant inlet velocity signals and transmits them to the control valves on the feed liquid and extractant pipelines. Adjust the valve opening of the control valves to regulate the volume of feed liquid entering the tower, and observe the real-time flow rate through the feed liquid inlet flow meter and extractant inlet flow meter.

[0061] Step 2: After the system stabilizes, input the magnetization / demagnetization frequency of the driving magnet into the information input module of the 13LabVIEW system front control panel and transmit it to the industrial computer. The industrial computer generates the magnetization / demagnetization frequency signal and transmits it to the driving magnet; the sieve plate begins to move alternately in the axial and circumferential directions.

[0062] Step 3: Open the data acquisition module in the front control panel of the 13LabVIEW system to collect data from temperature sensor 31 and conductivity meter 32 in real time and transmit it to the industrial computer;

[0063] Step 4: The industrial control computer processes the data to obtain the patterns of heating of the driving magnet and axial mixing within the tower;

[0064] Step 5: Click the "Save" Boolean button to trigger the "Conditional Structure" function control, which will display the waveform charts of the temperature signal and conductivity signal curves. The "Historical Data" attribute node will be written to an Excel spreadsheet and saved.

[0065] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy-saving hybrid sieve plate extraction tower system, characterized in that, Including tower components and control units; The tower assembly has a top component at the top and a skirt component at the bottom, and an internal drive shaft and a bottom support component. The top component includes a housing mounted on the tower assembly. An axial drive magnet assembly is located inside the housing. Multiple sieve plates are mounted on the drive shaft. The upper end of the drive shaft extends out of the tower assembly and enters the housing. An axial driven magnet is located at the upper end of the drive shaft. The axial driven magnet is located below the axial drive magnet assembly. The axial drive magnet assembly can attract or repel the axial driven magnet to drive the sieve plates to reciprocate up and down. The bottom support component includes a support cylinder fixed to the bottom wall of the tower assembly and a spring disposed within the support cylinder. The bottom of the sieve plate is provided with a circumferential driven magnet; the tower body assembly is provided with a circumferential driving magnet assembly; The circumferential drive magnet assembly can attract or repel the circumferential driven magnet to drive the sieve plate to swing around the drive shaft; there are two sets of circumferential drive magnet assemblies; the two sets of circumferential drive magnet assemblies are symmetrically arranged with respect to the center line of the tower assembly; each set of circumferential drive magnet assemblies includes a circumferential drive magnet and a second winding coil disposed outside the circumferential drive magnet; the circumferential drive magnet has a cuboid structure and is arranged horizontally; the second winding coil is connected to the control unit through two wires; there are also two circumferential driven magnets, which are symmetrically arranged with respect to the axis of the sieve plate; the circumferential driven magnets have a cuboid structure and are arranged horizontally. Both the axial drive magnet assembly and the circumferential drive magnet assembly are made of soft magnets; both the axial driven magnet and the circumferential driven magnet are made of hard magnets. The control unit is electrically connected to both the axial drive magnet assembly and the circumferential drive magnet assembly; the control unit is capable of controlling the magnetization and demagnetization frequencies of the axial drive magnet assembly and the circumferential drive magnet assembly.

2. The energy-saving hybrid sieve plate extraction tower system according to claim 1, characterized in that, The tower assembly includes a cylindrical body and upper and lower end caps sealed to both ends of the cylindrical body; the cylindrical body is provided with an extract phase outlet, a raffinate phase outlet, a feed liquid inlet, and an extractant inlet; control valves are provided at both the feed liquid inlet and the extractant inlet; the circumferential drive magnet assembly is fixedly connected to the inner wall of the cylindrical body.

3. The energy-saving hybrid sieve plate extraction tower system according to claim 2, characterized in that, The housing includes a conical shell and a top cover connected to the upper port of the conical shell; the conical shell is a hollow frustum; the top cover is a circular plate; the axial drive magnet assembly is connected to the bottom of the top cover by countersunk screws; a rain cap is provided on the upper surface of the top cover, and the rain cap is located above the countersunk screws.

4. The energy-saving hybrid sieve plate extraction tower system according to claim 3, characterized in that, The axial drive magnet assembly includes an axial drive magnet arranged in a vertical direction and a first wound coil disposed outside the axial drive magnet; the axial drive magnet is a cylinder; the first wound coil is connected to the control unit through two wires; the axial driven magnet is also a cylinder.

5. The energy-saving hybrid sieve plate extraction tower system according to claim 4, characterized in that, The side wall of the support cylinder has multiple through holes for the liquid to enter and exit the tower.

6. The energy-saving hybrid sieve plate extraction tower system according to claim 5, characterized in that, The axial driven magnet is threadedly connected to the drive shaft.

7. The energy-saving hybrid sieve plate extraction tower system according to claim 6, characterized in that, It also includes a detection unit; the detection unit includes a temperature sensor, two flow meters and multiple conductivity meters; the temperature sensor is located on the outside of the top assembly; the two flow meters are respectively located at the feed liquid inlet and the extractant inlet; the multiple conductivity meters are evenly distributed along the axial direction on the side wall of the tower assembly.

8. The energy-saving hybrid sieve plate extraction tower system according to claim 7, characterized in that, The control unit is communicatively connected to the detection unit; the control unit is configured to: The system receives information collected by the temperature sensor and the conductivity meter, processes it, and obtains the heating data of the axial drive magnet and the pattern of axial mixing within the tower. The system receives information collected by the flow meter, compares it with a preset value, and then adjusts the opening of the control valve according to the comparison result until the data collected by the flow meter meets the requirements.

9. The energy-saving hybrid sieve plate extraction tower system according to claim 8, characterized in that, It also includes a monitoring unit that can display axial drive magnet heating data, conductivity figures and images, magnetization / demagnetization frequency settings, two-phase flow rate, and total experimental time.

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