Vacuum type ceramic slurry demagnetizing and filtering device

Abstract

The utility model discloses a vacuum type ceramic slurry demagnetizing and filtering device which comprises a stirrer, the vacuum pump is arranged on one side of the stirrer, and a vacuumizing pipe communicated with the inner side of the stirrer is arranged at one end of the vacuum pump; the magnetic filtering mechanism is arranged on the other side of the stirrer to magnetically filter the slurry, and a material guide pipe communicated with the interior of the stirrer is arranged on one side of the magnetic filtering mechanism; the diaphragm pump is arranged on the other side of the magnetic filtering mechanism; according to the device, the vacuum pump, the stirrer, the magnetic filtering mechanism, the diaphragm pump and the filter screen mechanism are arranged, and a vacuum system, a demagnetizing system and a filtering system are combined, so that gel particles in slurry such as ceramic and glue are separated, impurities and bubbles in the slurry can be removed completely, and the stability of the slurry state is ensured; and the use safety and stability of the coated diaphragm in the lithium battery are improved.

Description

Technical Field

[0001] The utility model specifically relates to a vacuum magnetic removal and filtration device for ceramic slurry. Background Art

[0002] For the existing water-based ceramics and coating slurries for lithium battery separators, impurity removal is carried out through an iron removal and filtration system. The principle is that after the slurry is stirred evenly on a stirring device, magnetic removal is carried out through a small magnetic removal tank. However, this system cannot effectively remove other impurity elements and larger particles in the water-based ceramics and coating slurries during output, as well as the slurry bubbles generated by slurry reflux. The impurities and slurry bubbles will, to a certain extent, affect the increase of magnetic foreign matters in the separator and the surface density and thickness of the separator, thus unable to ensure the safety of the lithium battery separator during the use of the lithium battery, and also affecting the service life of the lithium battery. Therefore, we propose a vacuum magnetic removal and filtration device for ceramic slurry. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a vacuum magnetic removal and filtration device for ceramic slurry to solve the problem that the existing iron removal and filtration system cannot effectively remove impurities and bubbles in the slurry as mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A vacuum magnetic removal and filtration device for ceramic slurry, comprising:

[0005] A stirrer;

[0006] A vacuum pump, arranged on one side of the stirrer, and one end of the vacuum pump is provided with a vacuum extraction pipe communicating with the inside of the stirrer;

[0007] A magnetic filtration mechanism, arranged on the other side of the stirrer to magnetically filter the slurry, and one side of the magnetic filtration mechanism is provided with a material guiding pipe communicating with the inside of the stirrer;

[0008] A diaphragm pump, arranged on the other side of the magnetic filtration mechanism, and the input end of the diaphragm pump is connected to the lower end inside the magnetic filtration mechanism through a pipeline. The output end of the diaphragm pump is connected to a filter screen mechanism, and the lower end of the filter screen mechanism has a flow pipeline.

[0009] Preferably, a feed pipe for feeding is arranged at the top edge of the stirrer.

[0010] Preferably, a stirring motor is fixed at the top of the stirrer, and the output end of the stirring motor penetrates through the upper surface of the stirrer and extends to the inside of the stirrer to be connected with a dispersion disc for stirring the inside of the stirrer.

[0011] Preferably, the magnetic filtering mechanism includes a filtering barrel body, an electromagnetic net, a snap ring and a coil. At least one snap ring is arranged side by side along the height direction inside the filtering barrel body. An electromagnetic net is arranged inside the snap ring. A coil is arranged inside the filtering barrel body, and the coil is electrically connected to the electromagnetic net.

[0012] Preferably, there are two electromagnetic nets and snap rings. Circular holes are arrayed inside the electromagnetic net, and the aperture of the circular hole is: 20mm×20mm.

[0013] Preferably, the magnetic filtering mechanism further includes a cleaning port, which is arranged on one side wall of the filtering barrel body and corresponds to the electromagnetic net.

[0014] Preferably, a plurality of filter meshes are evenly distributed along the height direction inside the filter mesh mechanism. The aperture of the filter mesh is: 100-200 meshes. A maintenance plate is detachably connected to the top end of the filter mesh mechanism.

[0015] Preferably, a feeding air pressure regulating mechanism for controlling the internal air pressure is arranged on the front surface of the filter mesh mechanism.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] By providing a vacuum pump, a stirrer, a magnetic filtering mechanism, a diaphragm pump and a filter mesh mechanism, this patent avoids the influence of excessive impurities and slurry bubbles in the slurry on the diaphragm, which affects the service life of the later lithium battery. The device in this patent combines the vacuum system, the demagnetization system and the filtering system. While separating the gel particles in the slurry such as ceramics and adhesives, it can remove the impurities and bubbles in the slurry completely. On the premise of ensuring the stable state of the slurry, it improves the safety and stability of the coated diaphragm when used in the lithium battery. The operation is simple and it is easy to maintain in the later stage, increasing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the magnetic filtering mechanism of the present utility model;

[0020] Figure 3 is a schematic diagram of the filter mesh mechanism of the present utility model.

[0021] In the figure: 1. Vacuum pump; 2. Feed pipe; 3. Stirring motor; 4. Dispersion disc; 5. Stirrer; 6. Guide pipe; 7. Magnetic filtering mechanism; 701. Electromagnetic net; 702. Snap ring; 703. Coil; 704. Cleaning port; 9. Diaphragm pump; 10. Filter mesh mechanism; 101. Maintenance plate; 11. Feeding air pressure regulating mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a vacuum-type ceramic slurry demagnetizing and filtering device, including:

[0024] A stirrer 5, which is convenient for making the slurry mix evenly;

[0025] A vacuum pump 1 is arranged on one side of the stirrer 5, and a vacuum extraction pipe communicating with the inside of the stirrer 5 is arranged at one end of the vacuum pump 1, which is convenient for removing the air bubbles inside the slurry and reducing the influence of air bubbles during later coating;

[0026] A magnetic filtering mechanism 7 is arranged on the other side of the stirrer 5 to magnetically filter the slurry, and a guide pipe 6 communicating with the inside of the stirrer 5 is arranged on one side of the magnetic filtering mechanism 7, which is convenient for removing ferromagnetic impurities in the slurry;

[0027] A diaphragm pump 9 is arranged on the other side of the magnetic filtering mechanism 7, the input end of the diaphragm pump 9 is connected to the lower end inside the magnetic filtering mechanism 7 through a pipeline, the output end of the diaphragm pump 9 is connected to a filter screen mechanism 10, and the lower end of the filter screen mechanism 10 has a flow pipeline, which is convenient for removing large-volume impurities to improve the uniformity effect of the slurry.

[0028] In this embodiment, preferably, a feed pipe 2 for feeding is arranged at the top edge of the stirrer 5, which is convenient for injecting the slurry into the inside of the stirrer 5.

[0029] In this embodiment, preferably, a stirring motor 3 is fixed at the top of the stirrer 5, the output end of the stirring motor 3 penetrates the upper surface of the stirrer 5 and extends to the inside of the stirrer 5 to be connected with a dispersion disk 4 for stirring the inside of the stirrer 5, which is convenient for making the slurry disperse evenly to avoid inconsistent thickness during later coating due to uneven slurry.

[0030] In this embodiment, preferably, the magnetic filtering mechanism 7 includes a filter barrel body, an electromagnetic net 701, a snap ring 702 and a coil 703. At least one snap ring 702 is arranged side by side along the height direction inside the filter barrel body, the electromagnetic net 701 is arranged inside the snap ring 702, the coil 703 is arranged inside the filter barrel body, and the coil 703 is electrically connected to the electromagnetic net 701, which is convenient for restricting the random movement of the electromagnetic net 701 through the snap ring 702 to maintain its stability, and then removing ferromagnetic impurities from the slurry by magnetic attraction.

[0031] In this embodiment, preferably, there are two electromagnetic meshes 701 and snap rings 702. Circular holes are arrayed on the inner side of the electromagnetic mesh 701, and the aperture of the circular holes is: 20mm×20mm, which is convenient for removing ferromagnetic impurities in the slurry during the flow process.

[0032] In this embodiment, preferably, the magnetic filtering mechanism 7 further includes a cleaning port 704. The cleaning port 704 is arranged on one side wall of the filter barrel body and corresponds to the electromagnetic mesh 701, which is convenient for cleaning and maintaining the electromagnetic mesh 701 inside the filter barrel body.

[0033] In this embodiment, preferably, a plurality of filter meshes are evenly distributed along the height direction inside the filter mesh mechanism 10. The aperture of the filter meshes is: 100 - 200 meshes. A maintenance plate 101 is detachably connected to the top end of the filter mesh mechanism 10, which is convenient for maintaining the inside of the filter mesh mechanism 10.

[0034] In this embodiment, preferably, a feed air pressure regulating mechanism 11 for controlling the internal air pressure is arranged on the front surface of the filter mesh mechanism 10, which is convenient for outputting a certain flow rate of slurry to the coating platform. Its air pressure is preferably between 0.2mpa - 0.3mpa.

[0035] The working principle and usage process of the present utility model: When in use, it is connected to the stirrer 5 in an inlaid manner through the feed pipe 2. The main purpose is a feeding method for the slurry. The finished slurry is put into the stirrer 5. The output end of the stirring motor 3 is connected to the three - blade dispersing disc 4. The dispersing disc 4 is driven by the stirring motor 3 to rotate, so that the slurry liquid in the stirrer 5 is in a flowing state, which can effectively avoid the occurrence of slurry sedimentation and glue agglomeration problems. The function of the vacuum pump 1 is to evacuate the air in the stirrer 5 to form a negative pressure state, reduce the bubbles generated by stirring in the stirrer 5, and avoid the occurrence of uneven surface density and thickness during diaphragm coating due to slurry bubbles. When the slurry in the stirrer 5 is transported to the magnetic filtering mechanism 7 through the guide pipe 6, the electromagnetic mesh 701 is connected to the coil 703. A certain current is supplied to the electromagnetic mesh 701 through the coil 703 to form a magnetic force on the electromagnetic mesh 701, so as to adsorb magnetic foreign matters in the slurry on the electromagnetic mesh 701. After the magnetic foreign matters in the slurry are processed, when the slurry is transported to the filter mesh mechanism 10 through the diaphragm pump 9, large - particle foreign matters in the slurry are filtered in the filter mesh mechanism 10, which can effectively filter large particles and agglomerated objects in the slurry, and avoid the damage of the gravure roll and resin scraper caused by large - particle objects, thereby preventing the occurrence of vertical stripes on the diaphragm surface. Further, the air pressure is controlled by the feed air pressure regulating mechanism 11 on the front surface of the filter mesh mechanism 10 to adjust the flow rate of the slurry flowing through the flow - through pipeline at the lower end of the filter mesh mechanism 10 to the outside, ensuring the safety of the slurry coating used in lithium batteries.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum ceramic slurry demagnetization filtration device, characterized in that: include: Agitator (5); A vacuum pump (1) is arranged on one side of the stirrer (5), and one end of the vacuum pump (1) is provided with a vacuum extraction pipe connected to the inner side of the stirrer (5); A magnetic filtering mechanism (7) is arranged on the other side of the stirrer (5) to perform magnetic filtering on the slurry, and a material guide pipe (6) communicating with the interior of the stirrer (5) is arranged on one side of the magnetic filtering mechanism (7); A diaphragm pump (9) is arranged on the other side of the magnetic filtering mechanism (7), and the input end of the diaphragm pump (9) is connected to the inner lower end of the magnetic filtering mechanism (7) through a pipeline, and the output end of the diaphragm pump (9) is connected to a filter screen mechanism (10), and the lower end of the filter screen mechanism (10) has a flow pipeline.

2. The vacuum ceramic slurry demagnetization filtration device according to claim 1, characterized in that: The top edge of the stirrer (5) is provided with a feeding pipe (2) for feeding materials.

3. The vacuum ceramic slurry demagnetization filtration device according to claim 1, characterized in that: A stirring motor (3) is fixed to the top of the stirrer (5), and an output end of the stirring motor (3) penetrates the upper surface of the stirrer (5) and extends to the inside of the stirrer (5) to be connected to a dispersion disk (4) for stirring the inside of the stirrer (5).

4. The vacuum ceramic slurry demagnetization filtration device according to claim 1, characterized in that: The magnetic filtering mechanism (7) comprises a filter barrel body, an electromagnetic net (701), a clamping ring (702) and a coil (703); at least one clamping ring (702) is arranged side by side along the height direction inside the filter barrel body; the electromagnetic net (701) is arranged inside the clamping ring (702); the coil (703) is arranged inside the filter barrel body, and the coil (703) is electrically connected to the electromagnetic net (701).

5. The vacuum ceramic slurry demagnetization filtration device according to claim 4, characterized in that: The electromagnetic net (701) and the clamping ring (702) are both provided at two locations. An array of circular holes is provided inside the electromagnetic net (701). The diameter of the circular holes is 20 mm×20 mm.

6. The vacuum ceramic slurry demagnetization filtering device according to claim 4, characterized in that: The magnetic filtering mechanism (7) further comprises a cleaning port (704), wherein the cleaning port (704) is arranged on a side wall of the filtering barrel body and corresponds to the electromagnetic net (701).

7. The vacuum ceramic slurry demagnetization filtration device according to claim 1, characterized in that: A plurality of filter screens are evenly distributed along the height direction on the inner side of the filter screen mechanism (10), and the aperture of the filter screens is 100-200 meshes. A maintenance plate (101) is detachably connected to the top of the filter screen mechanism (10).

8. The vacuum ceramic slurry demagnetization filtration device according to claim 1, characterized in that: The front surface of the filter screen mechanism (10) is provided with a feed air pressure regulating mechanism (11) for controlling the internal air pressure thereof.

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