A dynamic de-ironing filter device

Abstract

This invention discloses a dynamic iron removal filtration device, comprising a top-sealed cylindrical cavity, a cylindrical filter, a cleaning device, and a driving device. Both the filter and cleaning devices are housed within the cylindrical cavity. A positioning rod is positioned along the central axis of the filter. The driving device includes a motor, an external magnetic coupling assembly, and an internal magnetic coupling plate. The external magnetic coupling assembly is positioned above the cylindrical cavity and driven by the motor. A gap exists between the external magnetic coupling assembly and the top of the cylindrical cavity. The internal magnetic coupling plate is positioned within the cylindrical cavity, and the attractive force between the external magnetic coupling assembly and the internal magnetic coupling plate is greater than or equal to the weight of the internal magnetic coupling plate. The cleaning device is driven by the internal magnetic coupling plate and can rotate around the positioning rod. This invention overcomes the problems of filter clogging and slurry leakage or contamination within the cylindrical cavity in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and more particularly to a dynamic iron removal filtration device. Background Technology

[0002] Lithium-ion batteries, due to their advantages such as high voltage, high specific energy, wide operating temperature range, stable discharge, environmental friendliness, and good safety performance, are now widely used in electronic products such as mobile phones, digital cameras, laptops, power tools, and electric vehicles. Therefore, improving the performance of lithium-ion batteries has become an urgent problem to be solved. In the composition of lithium-ion batteries, the performance of the positive and negative electrodes has a very important impact on the battery performance, and the quality of the battery slurry directly determines the quality of the electrodes. Currently, after the existing lithium-ion battery slurry is prepared, it needs to be filtered using filtration equipment to remove metal impurities, particles, and air bubbles before the coating process can begin.

[0003] Filtration equipment basically includes a filter and a magnetic separator installed within a cavity. The filter removes large particles from the battery slurry, while the magnetic separator removes fine metallic impurities. However, the filter in this type of equipment is prone to clogging, preventing continuous operation. Therefore, some filtration equipment now includes a cleaning device. This cleaning device rotates to clean the filter. However, existing cleaning devices typically use an external motor connected and driven by bearings and a drive shaft. This results in the cavity containing the slurry not being sealed, leading to leakage and contamination from the connection points. Furthermore, impurities in the slurry can easily enter the bearings, making them difficult to clean and affecting the bearings and even the cleaning device's operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dynamic iron removal filtration device that can overcome the problems of filter clogging, inability to seal the cavity, and easy influence of slurry on bearings in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a dynamic iron removal filtration device, comprising a top-sealed cylindrical cavity, a cylindrical filter device, a cleaning device, and a driving device. The filter device and the cleaning device are both disposed within the cylindrical cavity. A positioning rod is provided at the central axis of the filter device. The driving device includes a motor, an external magnetic coupling assembly, and an internal magnetic coupling plate. The external magnetic coupling assembly is disposed above the cylindrical cavity and driven by the motor. A gap is provided between the external magnetic coupling assembly and the top of the cylindrical cavity. The internal magnetic coupling plate is disposed within the cylindrical cavity, and the attractive force between the external magnetic coupling assembly and the internal magnetic coupling plate is greater than or equal to the weight of the internal magnetic coupling plate. The cleaning device is driven by the internal magnetic coupling plate and can rotate around the positioning rod.

[0006] The beneficial effects of this invention are as follows: The invention includes a cleaning device that, when rotating, cleans the sidewalls of the cylindrical filter, preventing clogging and enabling continuous dynamic filtration over extended periods. The cleaning device is driven by a magnetic coupling device, achieving shaftless transmission. Therefore, the top of the cylindrical cavity can be sealed, preventing slurry leakage or contamination within the cavity. The inner magnetic coupling plate in the drive device is suspended, eliminating the need for bearings to connect it to the positioning rod, thus overcoming the defect in existing technologies where bearings are easily affected by slurry. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of the dynamic iron removal filtration device according to an embodiment of the present invention;

[0008] Figure 2 This is a cross-sectional view of the dynamic iron removal filtration device according to an embodiment of the present invention;

[0009] Figure 3 This is a magnified schematic diagram of part A.

[0010] Label Explanation:

[0011] 1—Mobile support assembly;

[0012] 11—Column;

[0013] 2—Cylindrical cavity;

[0014] 21—Upper cavity;

[0015] 22—Inferior cavity;

[0016] 23—Feed inlet;

[0017] 24—Discharge port;

[0018] 25—Pipeline;

[0019] 26—Slag cleaning port;

[0020] 3—Clamps;

[0021] 4—Fixing plate;

[0022] 41—Inner ring through hole;

[0023] 42—Outer ring through hole;

[0024] 5—Filtering device;

[0025] 6—Positioning tie rod;

[0026] 7—Cleaning equipment;

[0027] 71—Framework;

[0028] 72—Flexible hinge;

[0029] 73—Scraper blade;

[0030] 74—Permanent magnet rod;

[0031] 8—Drive device;

[0032] 81—Electric motor;

[0033] 82—External magnetic coupling assembly;

[0034] 83—Inner magnetic coupling plate;

[0035] 84—Teflon balance column;

[0036] 85—Sleeve;

[0037] 86—Actuating pin. Detailed Implementation

[0038] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0039] The most crucial concept of this invention is: using a magnetic coupling device to drive the cleaning device 7 to rotate. The magnetic coupling device includes an outer magnetic coupling component 82 and an inner magnetic coupling plate 83. The outer magnetic coupling component 82 is located outside the cylindrical cavity 2 and is driven by a motor 81. The inner magnetic coupling plate 83 is located inside the cylindrical cavity 2. The inner magnetic coupling plate 83 is in a suspended state and drives the cleaning device 7 to rotate.

[0040] Please refer to Figure 1 as well as Figure 2 A dynamic iron removal filtration device includes a top-sealed cylindrical cavity 2, a cylindrical filter device 5, a cleaning device 7, and a drive device 8. The filter device 5 and the cleaning device 7 are both disposed within the cylindrical cavity 2. A positioning rod 6 is provided at the central axis of the filter device 5. The drive device 8 includes a motor 81, an external magnetic coupling assembly 82, and an internal magnetic coupling plate 83. The external magnetic coupling assembly 82 is disposed above the cylindrical cavity 2 and driven by the motor 81. A gap is provided between the external magnetic coupling assembly 82 and the top of the cylindrical cavity 2. The internal magnetic coupling plate 83 is disposed within the cylindrical cavity 2, and the attractive force between the external magnetic coupling assembly 82 and the internal magnetic coupling plate 83 is greater than or equal to the weight of the internal magnetic coupling plate 83. The cleaning device 7 is driven by the internal magnetic coupling plate 83 and can rotate around the positioning rod 6.

[0041] As can be seen from the above description, the beneficial effects of the present invention are as follows: The present invention is equipped with a cleaning device, which can clean the side wall of the cylindrical filter device when it rotates, avoiding clogging of the filter device and enabling the filter device to perform continuous dynamic filtration for a long time; the cleaning device is driven by a magnetic coupling device to achieve shaftless transmission, so the top of the cylindrical cavity can be sealed to avoid leakage or contamination of the slurry in the cylindrical cavity; the inner magnetic coupling plate in the driving device is in a suspended state, and there is no need to use a bearing to connect it to the positioning rod, which can overcome the defect of the bearing being easily affected by the slurry in the prior art.

[0042] Furthermore, the inner magnetic coupling plate 83 is sleeved on the positioning tie rod 6 via a bushing 85, and the inner magnetic coupling plate 83 and the bushing 85 are in clearance fit.

[0043] As described above, when the outer magnetic coupling assembly rotates, the positioning rod and bushing can restrict the inner magnetic coupling plate from rotating around the positioning rod, and the bushing and the inner magnetic coupling plate are fitted with a clearance, which can reduce the friction of the bushing on the inner magnetic coupling plate.

[0044] Furthermore, a gap is provided between the inner magnetic coupling plate 83 and the top end of the cylindrical cavity 2, and one or more Teflon balance columns 84 are fixed on the inner magnetic coupling plate 83, with the top end of the Teflon balance column 84 protruding from the upper surface of the inner magnetic coupling plate 83.

[0045] As described above, in the working state, the inner magnetic coupling plate is immersed in the slurry. The slurry has a certain influence on the rotation and suspension state of the inner magnetic coupling plate. Therefore, in this solution, the attraction force of the outer magnetic coupling component on the inner magnetic coupling plate is set to be slightly greater than the weight of the inner magnetic coupling plate. At the same time, the top of the Teflon balance column is made to contact the top of the cylindrical cavity. The top of the cylindrical cavity will give the inner magnetic coupling plate a downward thrust through the Teflon balance column. This thrust changes according to the changes in other forces on the inner magnetic coupling plate, which can ensure that the inner magnetic coupling plate maintains a stable suspension state.

[0046] Furthermore, a toggle pin 86 is provided on the lower side of the inner magnetic coupling plate 83, and the toggle pin 86 extends into the cleaning device 7.

[0047] As described above, the inner magnetic coupling plate rotates by actuating the cleaning device via a toggle pin, rather than by a fixed connection, thus avoiding any influence of the cleaning device on the position of the inner magnetic coupling plate.

[0048] Furthermore, the cylindrical cavity 2 is provided with an inlet 23 and an outlet 24 on its side wall, and a slag removal port 26 is provided at the bottom of the cylindrical cavity 2; the cleaning device 7 is located around the filter device 5; the bottom end of the filter device 5 is connected to the outlet 24 through a pipe 25.

[0049] As described above, in the prior art, the slurry generally enters the inner cavity of the filter device through the inlet and is filtered from the inside out. The internal space of the filter screen is small, the slurry flow rate is slow, and the filtration efficiency is low. In contrast, this solution sets the inlet on the cylindrical cavity. The slurry first flows into the gap between the cylindrical cavity and the filter device through the inlet, and then flows into the filter device from the outside in for filtration, thus improving the filtration efficiency. When filtering from the outside in, large particles of impurities are attached to the outer surface of the filter device. The cleaning device can remove the large particles of impurities from the outer surface of the filter device, causing them to fall into the cylindrical cavity and settle at the bottom. When a certain amount of impurities accumulates, the cleaning port is opened to remove the impurities from the cylindrical cavity.

[0050] Furthermore, the cleaning device 7 includes a frame 71 and a scraper 73, the scraper 73 being fixed to the frame 71 by a flexible hinge 72, and the end of the scraper 73 being in contact with the outer surface of the filter device 5.

[0051] As described above, the scraper is elastically connected to the frame, which ensures that the scraper and the outer surface of the filter device are always in good contact during operation.

[0052] Furthermore, it also includes a permanent magnet 74, which is disposed on the frame 71 of the cleaning device 7.

[0053] As described above, the slurry can be filtered and iron removed at the same time, which not only improves efficiency, but also integrates the filtration device and the iron removal device into one, so that they do not need to be set up separately. The structure of the equipment becomes more compact and the overall space occupied by the equipment is reduced.

[0054] Furthermore, the filtering device 5 is a metal filter screen.

[0055] Furthermore, the cylindrical cavity 2 includes an upper cavity 21 and a lower cavity 22, which are connected by a clamp 3.

[0056] As described above, when it is necessary to clean or replace the device inside the cylindrical cavity, loosen the clamp to separate the upper and lower cavities, and then remove the device from the cylindrical cavity.

[0057] Furthermore, it also includes a column 11, which includes a fixed end and a liftable end connected to each other. The lower cavity 22 is fixedly connected to the fixed end, and the motor 81 and the external magnetic coupling assembly 82 are fixedly connected to the liftable end.

[0058] As described above, the external magnetic coupling assembly and motor can be raised through the lifting end of the column, then rotated to the side, and the clamps can be loosened to lift the upper cavity, and then the cleaning device and filter device can be disassembled and cleaned. Example 1

[0059] Please refer to Figure 1 as well as Figure 2 Embodiment 1 of the present invention is a dynamic iron removal filtration device for filtering and removing iron from battery slurry. The device includes a movable support assembly 1, a cylindrical cavity 2 with a sealed top, a cylindrical filter device 5, a cleaning device 7, and a drive device 8.

[0060] The mobile support assembly 1 includes a support and a column 11 mounted on the support. The lower side of the support is provided with wheels. The support includes a fixed end and a liftable end that are connected to each other. The fixed end is fixedly connected to the support, and the liftable end can move up and down and rotate relative to the fixed end.

[0061] The cylindrical cavity 2 includes an upper cavity 21 and a lower cavity 22, which are connected by a clamp 3. The lower cavity 22 is fixedly connected to the fixed end of the column 11. A slag removal port 26 is provided at the bottom end of the cylindrical cavity 2, and a valve is provided at the slag removal port 26. An inlet 23 and an outlet 24 are provided on the side wall of the cylindrical cavity 2. In this embodiment, both the inlet 23 and the outlet 24 are located in the lower cavity 22.

[0062] A fixing plate 4 is provided at the top of the lower cavity 22. The filter device 5 is disposed inside the cylindrical cavity 2 and is fixed to the fixing plate 4 by a positioning rod 6. The fixing plate 4 has two rings of through holes, an inner ring through hole 41 that communicates with the bottom end of the filter device 5, and an outer ring through hole 42 that connects the upper cavity 21 and the lower cavity 22. Preferably, the filter device 5 is a cylinder surrounded by a metal filter screen. The positioning rod 6 is located at the central axis of the filter device 5, and the filter device 5 is fitted onto the positioning rod 6. The top end of the positioning rod 6 protrudes from the top of the filter device 5. A pipe 25 is provided on the lower side of the fixing plate 4. One end of the pipe 25 is connected to the inner ring through hole 41, and the other end of the pipe 25 is connected to the discharge port 24.

[0063] The cleaning device 7 is disposed within the cylindrical cavity 2 and is located around the periphery of the filter device 5. The cleaning device 7 is driven by the driving device 8 and can rotate around the positioning pull rod 6. The cleaning device 7 includes a frame 71 and scrapers 73. The scrapers 73 are fixed to the frame 71 by elastic hinges 72, and the ends of the scrapers 73 contact the outer surface of the filter device 5. When the cleaning device 7 rotates, the scrapers 73 can scrape off particulate residues adhering to the outer surface of the filter device 5. There can be one or more scrapers 73, and the material of the scrapers 73 is preferably Teflon. When the cleaning device 7 is working, the Teflon scrapers 73 cause less wear to the metal filter screen. One or more permanent magnets 74 are also disposed on the frame 71 of the cleaning device 7, and the permanent magnets 74 can attract fine impurities in the slurry.

[0064] The driving device 8 includes a geared motor 81, an external magnetic coupling assembly 82, and an internal magnetic coupling plate 83. The external magnetic coupling assembly 82 is disposed above the cylindrical cavity 2 and driven by the geared motor 81. A gap is provided between the external magnetic coupling assembly 82 and the top end of the cylindrical cavity 2. The motor 81 and the external magnetic coupling assembly 82 are fixedly connected to the liftable end of the column 11. The height of the motor 81 and the external magnetic coupling assembly 82 can be adjusted by changing the height of the liftable end. The internal magnetic coupling plate 83 has a permanent magnet embedded in it and is disposed inside the cylindrical cavity 2. The attractive force between the external magnetic coupling assembly 82 and the internal magnetic coupling plate 83 can be slightly greater than or equal to the weight of the internal magnetic coupling plate 83. Preferably, in this embodiment, the attractive force between the external magnetic coupling assembly 82 and the internal magnetic coupling plate 83 is 10-50N greater than the weight of the internal magnetic coupling plate 83. The inner magnetic coupling plate 83 is sleeved on the top end of the positioning pull rod 6 via a bushing 85, and the inner magnetic coupling plate 83 and the bushing 85 are in clearance fit. Figure 3 As shown, a gap is provided between the inner magnetic coupling plate 83 and the top end of the cylindrical cavity 2. Three Teflon balance columns 84 are fixed on the inner magnetic coupling plate 83, and the top ends of the Teflon balance columns 84 protrude from the upper surface of the inner magnetic coupling plate 83. The top ends of the Teflon balance columns 84 can adjust the force on the inner magnetic coupling plate 83 by contacting the top surface of the cylindrical cavity 2, so that the inner magnetic coupling plate 83 is stably in a suspended equilibrium state. When the motor 81 drives the outer magnetic coupling assembly 82 to rotate, the outer magnetic coupling assembly 82 drives the inner magnetic coupling plate 83 to rotate through magnetic coupling. A toggle pin 86 is provided on the lower side of the inner magnetic coupling plate 83. The toggle pin 86 extends into the frame 71 of the cleaning device 7. When the inner magnetic coupling plate 83 rotates, the toggle pin 86 can drive the frame 71 to rotate.

[0065] The working process of the equipment is as follows: the slurry enters the lower cavity 22 of the cylindrical cavity 2 through the feed port 23, and enters the space between the filter device 5 and the side wall of the upper cavity 21 through the outer ring through hole 42 on the fixed plate 4. The permanent magnet 74 in this space can remove iron from the slurry. Then the slurry enters the inner cavity of the filter device 5 through the cylindrical metal filter screen, and is discharged through the inner ring through hole 41 and the discharge port 24, thus completing the iron removal and filtration. During the aforementioned iron removal filtration process, the motor 81 drives the external magnetic coupling assembly 82 to rotate. The external magnetic coupling assembly 82 drives the internal magnetic coupling plate 83 to rotate via magnetic coupling. The internal magnetic coupling plate 83 drives the cleaning device 7 to rotate. The Teflon scraper 73 on the cleaning device 7 scrapes the outer surface of the filter device 5, removing large particles of impurities adhering to the outer surface of the filter device 5. Due to their higher specific gravity, these large particles of impurities sink to the bottom of the cylindrical cavity 2. When a certain amount of large particles of impurities accumulates, the valve at the bottom cleaning port 26 can be opened to discharge the settled large particles of impurities. The Teflon scraper 73 continuously cleans the filter device 5, keeping it clean and unobstructed to prevent clogging, allowing the filter device 5 to perform continuous iron removal filtration for extended periods.

[0066] Since iron impurities in the slurry are adsorbed onto the permanent magnet rod 74, the permanent magnet rod 74 also needs to be cleaned regularly. When cleaning is required, the motor 81 and the external magnetic coupling assembly 82 can be lifted through the lifting end on the column 11, then rotated to the side, and then the clamp 3 between the upper cavity 21 and the lower cavity 22 can be loosened, so that the upper cavity 21 can be lifted, and the various internal devices can be taken out for disassembly and cleaning.

[0067] In summary, the dynamic iron removal filtration equipment provided by this invention is equipped with a cleaning device 7, which rotates around the central axis of the cylindrical filter device 5. This cleaning device 7 can scrape off large particles of impurities adsorbed on the outer surface of the filter device 5, preventing the filter device 5 from clogging. The filter device 5 and the iron removal device are efficiently combined, saving space. The cleaning device 7 is driven by magnetic coupling and, through a special setting, can be driven without the use of shafts and bearings, achieving the sealing of the cylindrical cavity 2 and preventing slurry leakage and contamination. In addition, the equipment is easy to disassemble and clean.

[0068] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A dynamic iron removal filtration device, characterized in that, The device includes a top-sealed cylindrical cavity, a cylindrical filter, a cleaning device, and a driving device. Both the filter and cleaning devices are housed within the cylindrical cavity. A positioning rod is located at the central axis of the filter. The driving device includes a motor, an external magnetic coupling assembly, and an internal magnetic coupling plate. The external magnetic coupling assembly is positioned above the cylindrical cavity and driven by the motor. A gap exists between the external magnetic coupling assembly and the top of the cylindrical cavity. The internal magnetic coupling plate is located within the cylindrical cavity, and the attractive force between the external magnetic coupling assembly and the internal magnetic coupling plate is greater than or equal to the weight of the internal magnetic coupling plate. The cleaning device is driven by the internal magnetic coupling plate and can rotate around the positioning rod. The inner magnetic coupling plate is sleeved on the positioning tie rod via a bushing, and the inner magnetic coupling plate and the bushing are in clearance fit. A gap is provided between the inner magnetic coupling plate and the top of the cylindrical cavity. One or more Teflon balance columns are fixed on the inner magnetic coupling plate, and the top of the Teflon balance column protrudes from the upper surface of the inner magnetic coupling plate. A toggle pin is provided on the lower side of the inner magnetic coupling plate, and the toggle pin extends into the cleaning device; The cylindrical cavity has an inlet and an outlet on its side wall, and a slag removal port at its bottom; the cleaning device is located around the filter device; the bottom of the filter device is connected to the outlet via a pipe.

2. The dynamic iron removal filtration device as described in claim 1, characterized in that, The cleaning device includes a frame and a scraper, the scraper being fixed to the frame by a flexible hinge, and the end of the scraper contacting the outer surface of the filter device.

3. The dynamic iron removal filtration device as described in claim 2, characterized in that, It also includes a permanent magnet rod, which is disposed on the frame of the cleaning device.

4. The dynamic iron removal filtration device as described in claim 1, characterized in that, The filtration device is a metal filter screen.

5. The dynamic iron removal filtration device as described in claim 1, characterized in that, The cylindrical cavity includes an upper cavity and a lower cavity, which are connected by a clamp.

6. The dynamic iron removal filtration device as described in claim 5, characterized in that, It also includes a column, which has a fixed end and a liftable end connected to each other. The lower cavity is fixedly connected to the fixed end, and the motor and the external magnetic coupling assembly are fixedly connected to the liftable end.

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