Filtering system for coating slurry processing

Abstract

The utility model belongs to the technical field of battery production, and particularly relates to a filtering system for coating slurry processing, which comprises a barrel body, a stirring mechanism and a filtering part, a filtering inner cavity is formed in the barrel body; the barrel body is further provided with a feeding port and a discharging port which are communicated with the filtering inner cavity. The stirring mechanism is connected to the barrel body and extends into the filtering inner cavity; the filtering part is connected to the interior of the barrel body and is arranged between the stirring mechanism and the discharging opening; and the filtering part is arranged at an inlet of the discharge hole in a covering manner. According to the utility model, the filtering efficiency and the discharging quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production, and in particular relates to a filtering system for coating slurry processing. Background Art

[0002] Lithium-ion batteries have advantages such as light weight and good safety performance, so they have a monopoly in the application of mobile electronic devices such as Bluetooth headsets, mobile phones, laptops, tablets, cameras, and portable mobile power supplies. At the same time, lithium-ion batteries have also been used in large quantities in electric motorcycles, electric vehicles, and other fields. Lithium-ion batteries are mainly composed of positive and negative pole pieces and the separator in between. The separator is used as a separator to prevent the positive and negative poles from directly contacting and short-circuiting. At present, the separator is mainly a porous medium composed of polyolefins such as polyethylene and polypropylene. The polyolefin separator has a melting point of 200 degrees or lower. When the battery is short-circuited due to internal or external factors and the temperature rises, it is easy to shrink and cause a short circuit between the positive and negative poles, resulting in thermal runaway of the battery and fire accidents. The internal reasons are mainly the uneven surface of the electrode or the mixing of sharp foreign objects in the battery assembly process, which can easily damage the separator and cause a short circuit. The external reasons are mainly sharp objects piercing the battery and causing a short circuit. During the process of diaphragm coating, a part of the slurry will leak from the two ends of the coating box and the lower scraper, and then flow into the supply tank through the auxiliary box. During the process of returning to the feed tank, the slurry in the auxiliary material box is at risk of agglomeration or forming large particles. If this part of the agglomerated slurry or the slurry with large particles is coated on the surface of the diaphragm, scratches will be formed on the surface of the diaphragm or it will easily fall off, affecting the safety performance of the diaphragm. Therefore, a filtration system is required to filter the slurry.

[0003] The operating process of most existing filtration systems is filtering, stirring and then discharging; however, during the stirring process, due to the influence of various external factors, agglomeration or formation of large particles may occur, which may cause clogging of the filter components, thereby greatly reducing the filtration effect and the feeding quality of the slurry. Utility Model Content

[0004] The purpose of the utility model is to provide a filtering system for coating slurry processing in view of the shortcomings of the prior art, so as to improve the filtering effect.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A filtration system for coating slurry processing, comprising a barrel body, a stirring mechanism and a filtering component; a filtering inner cavity is provided in the barrel body; the barrel body is also provided with a loading port and a discharging port respectively connected to the filtering inner cavity; the stirring mechanism is connected to the barrel body and extends to the interior of the filtering inner cavity; the filtering component is connected to the interior of the barrel body and is arranged between the stirring mechanism and the discharging port; and the filtering component covers the inlet arranged at the discharging port.

[0007] Preferably: the filter component comprises a horizontal filter screen, which is arranged inside the filter cavity; and a horizontal gap is provided between the inner wall of the barrel body on the side of the discharge port and the horizontal filter screen; and the horizontal gap is connected to the discharge port.

[0008] Preferably: a surface of the horizontal filter screen on a side close to the stirring mechanism is provided with an arc surface; the arc surface is recessed toward the discharge port.

[0009] Preferably, the projection of the inner wall of the barrel body on the side of the discharge port toward the horizontal filter screen covers the horizontal filter screen.

[0010] Preferably: the filter component further includes a vertical filter screen, the vertical filter screen is connected to the horizontal filter screen; and a vertical gap is provided between the vertical filter screen and the inner wall of the barrel body; the vertical gap is respectively connected to the filter cavity and the horizontal gap.

[0011] Preferably: the filter component further comprises a connecting piece; the connecting piece is connected to the vertical filter screen and / or the horizontal filter screen; and the connecting piece is connected to the inner wall of the barrel body.

[0012] Preferably: the stirring mechanism comprises a stirring drive motor, a stirring connecting shaft and a stirring rod; the stirring drive motor is connected to the barrel body and is transmission-connected to the stirring connecting shaft; one end of the stirring rod is fixedly connected to the bottom of the stirring connecting shaft.

[0013] Preferably: the filtration system for coating slurry processing further comprises a buffer container; a buffer inner cavity is provided in the buffer container; the buffer inner cavity is communicated with the discharge port; a liquid level sensor is provided in the buffer inner cavity.

[0014] Preferably: the coating slurry processing filtering system further comprises a discharge mechanism; the discharge mechanism is connected to the discharge port of the buffer inner cavity.

[0015] Preferably: the discharge mechanism comprises a suction pump and a discharge pipe; one end of the discharge pipe is communicated with the buffer inner cavity; the other end of the discharge pipe is communicated with the suction pump.

[0016] The beneficial effect of the utility model is that the technical solution can effectively expand the filtering coverage of the filtering component by covering the discharge port with a filtering component, thereby effectively increasing the filtering throughput, reducing the amount of blockage when passing through the filtering component, and improving the filtering efficiency; at the same time, by stirring first and then filtering, and then discharging, it can reduce the generation of some turbid substances during the stirring process, thereby improving the filtering efficiency and the discharge quality, and then improving the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will refer to the attached Figures 1 to 4 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0018] Figure 1 This is a schematic structural diagram of a filtration system for coating slurry processing according to one embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of a filtration system for coating slurry processing according to another embodiment of the utility model;

[0020] Figure 3 This is a schematic structural diagram of a filtration system for coating slurry processing according to an embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a filtering system for coating slurry processing according to an embodiment of the utility model.

[0022] In the figure: 1-barrel body; 11-feeding port; 12-discharge port; 101-filter inner cavity; 102-discharge gap; 1021-horizontal gap; 1022-vertical gap; 2-buffer container; 21-buffer inner cavity; 22-liquid level sensor; 3-stirring mechanism; 31-stirring drive motor; 32-stirring connecting shaft; 33-stirring rod; 331-stirring convex part; 4-filter component; 41-horizontal filter screen; 42-connector; 43-vertical filter screen; 5-discharge mechanism; 51-suction pump; 52-discharge pipe; 53-check valve. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0024] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] In the description of the embodiments of the present application, the term "and / or" is merely a kind of association relationship of the associated objects in the coating slurry processing filtration system, indicating that there can be three kinds of relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship of the coating slurry processing filtration system.

[0027] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0028] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] The following is combined with Figure 1 to Figure 4 The utility model is further described in detail, but it is not intended to limit the utility model.

[0031] like Figure 1 As shown, in one embodiment of the utility model, the filtration system for coating slurry processing comprises a barrel body 1, a stirring mechanism 3 and a filtering component 4; a filtering inner cavity 101 is provided in the barrel body 1; the barrel body 1 is also provided with a loading port 11 and a discharging port 12 respectively connected to the filtering inner cavity 101; the stirring mechanism 3 is connected to the barrel body 1 and extends to the interior of the filtering inner cavity 101; the filtering component 4 is connected to the interior of the barrel body 1 and is arranged between the stirring mechanism 3 and the discharging port 12; and the filtering component 4 covers the inlet arranged at the discharging port 12.

[0032] The technical solution of the utility model can effectively expand the filtering coverage of the filtering component by covering the discharge port with a filtering component, thereby effectively increasing the filtering throughput, reducing the amount of blockage when passing through the filtering component, and improving the filtering efficiency; at the same time, by first stirring and then filtering, and then discharging, it can reduce the generation of some turbid substances during the stirring process, thereby improving the filtering efficiency and the discharge quality, and then improving the filtering effect.

[0033] Specifically, in some embodiments, Figure 1 and 2 As shown, the filter component 4 includes a horizontal filter screen 41, which is arranged inside the filter cavity 101; and a horizontal gap 1021 is arranged between the inner wall of the barrel body 1 provided with the discharge port 12 and the horizontal filter screen 41; the horizontal gap 1021 is connected with the discharge port 12. That is to say, after the slurry is filtered by the horizontal filter screen 41, it is buffered to a certain extent by the horizontal gap 1021 before being discharged from the discharge port 12, thereby avoiding excessive impact on the discharge port 12, and further ensuring the orderliness and stability of the discharge.

[0034] Specifically, in some embodiments, Figure 2 As shown, the surface of the horizontal filter screen 41 close to the stirring mechanism 3 is provided with an arc surface 411; the arc surface 411 is set concavely toward the discharge port 12. This structure can guide the filtered slurry flow to the discharge port 12 as much as possible through the arc surface 411 concave toward the discharge port 12, thereby improving the discharge speed and amount, and also ensuring the filtration amount and filtration efficiency.

[0035] Specifically, in some embodiments, Figure 2As shown, the projection of the inner wall of the barrel body 1 with the discharge port 12 toward the horizontal filter screen 41 covers the horizontal filter screen 41. The discharge port 12 is located at the bottom of the barrel body 1. That is, the cross-sectional area of ​​the horizontal filter screen 41 is less than or equal to the cross-sectional area of ​​the bottom of the barrel body 1. In other words, by increasing the filtering area of ​​the horizontal filter screen 41 at the bottom, the clogging of the filtering surface can be reduced, and the filtering amount can also be increased, thereby improving the filtering efficiency.

[0036] Specifically, in some embodiments, Figure 1 and 3 As shown, the filter component 4 also includes a vertical filter screen 43, which is connected to the horizontal filter screen 41; and a vertical gap 1022 is provided between the vertical filter screen 43 and the inner wall of the barrel body 1; the vertical gap 1022 is respectively connected to the filter cavity 101 and the horizontal gap 1021. Among them, the vertical filter screen 43 is an annular filter screen, and is vertically connected to the upper end of the horizontal filter screen 41. In other words, the stirred slurry is filtered and diverted from the side end of the annular direction through the vertical filter screen 43, thereby improving the diversion speed and filtering amount, and then improving the discharge efficiency.

[0037] Specifically, in some embodiments, the filter component 4 further includes a connector 42. Figure 2 As shown, one end of the connecting member 42 is connected to the horizontal filter screen 41; the other end of the connecting member 42 is connected to the inner wall of the barrel body 1. Figure 3 As shown, one end of the connector 42 is connected to the vertical filter screen 43; the other end of the connector 42 is connected to the inner wall of the barrel body 1. The connector 42 may be a square connector block, which is detachably connected to the horizontal filter screen 41 or the vertical filter screen 43; the square connector block is detachably connected to the inner wall of the barrel body 1. The connector 42 may be an arc-shaped buckle, which is detachably connected to the horizontal filter screen 41 or the vertical filter screen 43; the arc-shaped buckle is detachably connected to the inner wall of the barrel body 1. Of course, the connector 42 may also be other structures with the same function, which are not limited here.

[0038] Specifically, in some embodiments, Figure 1 As shown, the stirring mechanism 3 includes a stirring drive motor 31, a stirring connecting shaft 32 and a stirring rod 33; the stirring drive motor 31 is connected to the barrel body 1 and is in transmission connection with the stirring connecting shaft 32; one end of the stirring rod 33 is fixedly connected to the bottom of the stirring connecting shaft 32. Among them, at least one stirring protrusion 331 is provided on the side surface of the stirring rod 33.

[0039] Specifically, in some embodiments, Figure 3As shown, the filtration system for coating slurry processing also includes a buffer container 2; a buffer inner cavity 21 is provided in the buffer container 2; the buffer inner cavity 21 is connected to the discharge port 12; and a liquid level sensor 22 is provided in the buffer inner cavity 21. That is to say, the structure can effectively buffer the impact force of the material discharged from the discharge port 12 by adding a buffer container 2 with a longer discharge path, thereby improving the orderliness and stability of the discharge. In addition, the amount of the induced liquid can be detected in real time by the liquid level sensor 22; when the liquid remains unchanged, it means that the equipment is operating normally, and when the liquid continues to decrease, it means that the filter component may be blocked or damaged and needs to be repaired and maintained. In other words, adding a buffer container 2 below the barrel body 1 can monitor the filtering condition of the barrel body 1 in advance. If the liquid level of the buffer container 2 continues to decrease, it can be checked whether the barrel body 1 is short of slurry or the filtering process is blocked, thereby avoiding coating omissions or slurry leakage.

[0040] Specifically, in some embodiments, Figure 4 As shown, the filtration system for coating slurry processing also includes a discharge mechanism 5; the discharge mechanism 5 is connected to the discharge port of the buffer inner cavity 21. The discharge mechanism 5 includes a pump 51 and a discharge pipe 52; one end of the discharge pipe 52 is connected to the buffer inner cavity 21; the other end of the discharge pipe 52 is connected to the pump 51. Figure 4 As shown, a one-way valve 53 is provided on the discharge pipe 52 .

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0042] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A filtration system for coating slurry processing, characterized in that: It includes a barrel body, a stirring mechanism and a filtering component; a filtering inner cavity is provided in the barrel body; the barrel body is also provided with a loading port and a discharging port which are respectively connected to the filtering inner cavity; the stirring mechanism is connected to the barrel body and extends to the interior of the filtering inner cavity; the filtering component is connected to the interior of the barrel body and is arranged between the stirring mechanism and the discharging port; and the filtering component covers the inlet arranged at the discharging port.

2. The filtration system for coating slurry processing according to claim 1, characterized in that: The filter component includes a horizontal filter screen, which is arranged inside the filter cavity; and a horizontal gap is provided between the inner wall of the barrel body on the side of the discharge port and the horizontal filter screen; and the horizontal gap is connected to the discharge port.

3. The filtration system for coating slurry processing according to claim 2, characterized in that: A curved surface is provided on the surface of the horizontal filter screen on one side close to the stirring mechanism; the curved surface is recessed toward the discharge port.

4. The filtration system for coating slurry processing according to claim 2 or 3, characterized in that: The projection of the inner wall of the barrel body on the side of the discharge port toward the horizontal filter screen covers the horizontal filter screen.

5. The filtration system for coating slurry processing according to claim 2, characterized in that: The filter component also includes a vertical filter screen, which is connected to the horizontal filter screen; and a vertical gap is provided between the vertical filter screen and the inner wall of the barrel body; the filter cavity and the horizontal gap are respectively connected to the vertical gap.

6. The filtration system for coating slurry processing according to claim 5, characterized in that: The filter component further includes a connecting piece; the connecting piece is connected to the vertical filter screen and / or the horizontal filter screen; and the connecting piece is connected to the inner wall of the barrel body.

7. The filtration system for coating slurry processing according to claim 1, characterized in that: The stirring mechanism comprises a stirring drive motor, a stirring connecting shaft and a stirring rod; the stirring drive motor is connected to the barrel body and is transmission-connected to the stirring connecting shaft; one end of the stirring rod is fixedly connected to the bottom of the stirring connecting shaft.

8. The filtration system for coating slurry processing according to claim 1, characterized in that: The filtration system for coating slurry processing also includes a buffer container; a buffer inner cavity is provided in the buffer container; the buffer inner cavity is communicated with the discharge port; and a liquid level sensor is provided in the buffer inner cavity.

9. The filtration system for coating slurry processing according to claim 8, characterized in that: The coating slurry processing filtering system further comprises a discharge mechanism; the discharge mechanism is communicated with the discharge port of the buffer inner cavity.

10. The filtration system for coating slurry processing according to claim 9, characterized in that: The discharge mechanism comprises a material extraction pump and a discharge pipe; one end of the discharge pipe is communicated with the buffer inner cavity; the other end of the discharge pipe is communicated with the material extraction pump.

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