A kind of lithium battery diaphragm pulping reaction kettle

Abstract

The utility model relates to a kind of reaction kettle for lithium battery diaphragm pulping, including reaction kettle, kettle cover located on the reaction kettle and the flow guide cylinder located in the reaction kettle;Flow guide cylinder successively includes detachable connection together's flow guide upper cylinder and flow guide lower cylinder from top to bottom, and the top outer wall of flow guide lower cylinder is installed into the bottom inner wall of flow guide upper cylinder;Several upper cylinder flanges are detachably installed in the top of flow guide upper cylinder along the circumferential direction, and upper cylinder flange is hung on kettle cover.The utility model flow guide cylinder adopts the three-level modularization design of "overall mounting", "upper and lower cylinder separation", "lower cylinder split piece".This design realizes the accurate maintenance from local to whole, and maximizes downtime and workload.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery separator processing, and in particular to a reaction vessel for lithium battery separator slurry preparation. Background Technology

[0002] In the preparation of lithium battery separator slurries (usually ceramic or polymer slurries), the reactor is a key mixing device. To obtain a highly uniform, stable slurry free of particle agglomeration, a flow guide tube needs to be installed inside the reactor to enhance axial circulation, avoid dead zones in the stirring, and ensure thorough mixing and dispersion of the solid and liquid.

[0003] In existing technologies, the flow guide tube of a reaction vessel often takes the following form: The guide tube is welded to the vessel lid or inner wall of the vessel as a single unit: This method has a simple structure, but it has a fatal flaw: when it is necessary to repair the agitator, replace worn parts, or clean the deposits on the inner wall of the guide tube, large-scale disassembly or even gas cutting is required. The process is cumbersome, time-consuming, and labor-intensive, seriously affecting the continuity of production. For the production of diaphragm slurries that require frequent formula changes or strict cleaning, this method has extremely high maintenance costs.

[0004] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a reaction vessel for lithium battery separator slurry preparation, which would have greater industrial application value. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a reaction vessel for preparing lithium battery separator slurry.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A reaction vessel for preparing lithium battery separator slurry includes a reaction vessel, a vessel cover located on the reaction vessel, and a flow guide cylinder located inside the reaction vessel; The guide tube consists of a detachable upper guide tube and a lower guide tube connected together from top to bottom, with the top outer wall of the lower guide tube installed into the bottom inner wall of the upper guide tube; Several upper edges of the cylinder are detachably installed along the circumferential direction on the top of the upper cylinder body, and the upper edges of the cylinder are hung on the lid of the vessel. The lower guide cylinder includes several guide vanes evenly distributed along the circumference, and adjacent guide vanes are detachably installed together through a guide installation structure.

[0007] As a further improvement of this utility model, a stirring motor is installed in the middle of the lid of the vessel. The stirring motor drives the stirring shaft located inside the reaction vessel to rotate, and several stirring blades are installed on the stirring shaft.

[0008] As a further improvement of this utility model, a cylinder clamping claw is installed on the bottom outer side of the upper edge of the cylinder, and the cylinder clamping claw engages with the outer edge of the lid.

[0009] As a further improvement of this utility model, the cylinder clamp is rotatably mounted on the upper edge of the cylinder.

[0010] As a further improvement of this utility model, an annular limiting ring is provided on the inner wall of the upper guide cylinder near the bottom, the top of the lower guide cylinder abuts against the limiting ring, and a sealing ring is installed at the connection between the upper and lower guide cylinders.

[0011] As a further improvement of this utility model, the flow guiding installation structure includes a mounting block disposed on the first side of the flow guiding plate and a mounting groove provided on the second side of the flow guiding plate, wherein the mounting block of the previous flow guiding plate is inserted into the mounting groove of the next flow guiding plate in a vertical direction.

[0012] As a further improvement of this utility model, the mounting groove has a structure with an open top and a closed bottom, and a sealing strip is installed inside the mounting groove.

[0013] As a further improvement of this utility model, a flow guide rib is provided on the inner surface of the flow guide plate. The flow guide rib is a spiral structure or a straight strip protrusion structure extending along the axial direction.

[0014] By means of the above solution, this utility model has at least the following advantages: This utility model's guide tube adopts a three-stage modular design: "integral mounting," "separation of upper and lower tubes," and "segmented lower tube." During routine cleaning or inspection, only some guide vanes of the lower tube can be disassembled. When the lower tube (vulnerable area) is severely worn, the lower tube module can be replaced individually without affecting the upper tube or the vessel lid connection structure. For major overhauls, the mounting can be removed, and the entire guide tube can be lifted out. This design enables precise maintenance from partial to overall, minimizing downtime and workload.

[0015] This invention suspends the entire guide tube on the edge of the vessel lid using the upper edge of the tube and the tube clamps, replacing the complex traditional method of bottom support or perimeter bolt fixation. The clamp engagement method is simple to operate (especially the rotatable clamps), allowing a single person to quickly lock or unlock, realizing the "one-click" assembly and disassembly concept of the guide tube.

[0016] This utility model employs a vertical plug-in connection between the guide vanes (the mounting block is inserted into the mounting groove), combined with a bottom-sealed groove design and built-in sealing strip, ensuring the mechanical strength and sealing reliability of the connection. This connection method effectively resists the circumferential shear force brought about by the slurry flow, preventing loosening or leakage at the connection, and ensuring the roundness and stability of the guide tube during long-term operation.

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a reaction vessel for preparing lithium battery separator slurry according to this utility model; Figure 2 yes Figure 1 Schematic diagram of the middle guide tube; Figure 3 yes Figure 2 Schematic diagram of the structure of the lower cylinder with central flow guide; Figure 4 yes Figure 3 A schematic diagram of the split structure; Figure 5 yes Figure 4 A schematic diagram of the structure of the middle guide vane.

[0020] The meanings of the labels in the figures are as follows.

[0021] 1. Reactor, 2. Lid, 3. Stirring motor, 4. Stirring shaft, 5. Stirring blade, 6. Flow guide cylinder, 7. Upper edge of cylinder, 8. Cylinder clamp, 9. Upper flow guide cylinder, 10. Lower flow guide cylinder, 11. Limiting ring, 12. Flow guide plate, 13. Flow guide installation structure, 14. Installation block, 15. Installation groove, 16. Flow guide rib. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] The first embodiment of this utility model: like Figures 1-5 As shown, a reaction vessel for preparing lithium battery separator slurry in this embodiment mainly includes a reaction vessel 1, a vessel cover 2 installed above the reaction vessel 1, and a guide tube 6 disposed inside the reaction vessel 1.

[0025] A stirring motor 3 is installed in the middle of the lid 2. The stirring motor 3 is used to drive the stirring shaft 4 located inside the reactor 1 to rotate. Several stirring blades 5 are installed on the stirring shaft 4 to achieve material mixing.

[0026] The guide tube 6 is the core component, which consists of two detachable parts: the upper guide tube 9 and the lower guide tube 10. The top outer wall of the lower guide tube 10 is fitted into the bottom inner wall of the upper guide tube 9.

[0027] In order to fix the entire guide tube 6 under the vessel lid 2, several tube upper edges 7 are detachably installed on the outer side of the top of the guide tube body 9 along the circumferential direction. Each tube upper edge 7 has a rotatable tube claw 8 hinged to its outer bottom. The tube claw 8 is engaged with the outer edge of the vessel lid 2, thereby achieving a stable mounting of the guide tube 6.

[0028] Near the bottom of the inner wall of the upper guide cylinder 9, an annular limiting ring 11 is provided to support and position the top of the lower guide cylinder 10 during installation, ensuring the accuracy of their axial positions. In addition, for sealing purposes, a sealing ring is also installed at the connection between the upper guide cylinder 9 and the lower guide cylinder 10.

[0029] The lower guide cylinder 10 itself is assembled from multiple arc-shaped guide vanes 12 evenly distributed along the circumference, and adjacent guide vanes 12 are connected by a special guide installation structure 13.

[0030] The flow guide mounting structure 13 includes a mounting block 14 disposed on a first side of each flow guide 12, and a mounting groove 15 formed on its second side. During installation, the mounting block 14 on one flow guide 12 is inserted vertically from top to bottom into the mounting groove 15 of the adjacent flow guide 12.

[0031] Here, the mounting groove 15 is designed with an open top and a closed bottom to securely accommodate the mounting block 14, and a sealing strip is pre-installed inside the mounting groove 15 to ensure no leakage at the joint.

[0032] In addition, guide ribs 16 are provided on the inner surface of each guide vane 12. These guide ribs 16 can be spiral structures extending along the axial direction or straight protrusions. Their main function is to guide and optimize the flow state of the fluid in the vessel and enhance the stirring and mixing effect.

[0033] The second embodiment of this utility model: like Figures 1-5 As shown, this embodiment provides a reaction vessel for preparing ceramic separator slurry for lithium batteries.

[0034] like Figure 1 The reactor comprises a cylindrical stainless steel reactor body 1, the top of which is sealed to a reactor cover 2 via a flange. A stirring motor 3 is installed in the center of the reactor cover 2, and the output shaft of the stirring motor 3 is connected via a coupling to a stirring shaft 4 extending into the reactor. Two sets of axial flow stirring blades 5 are installed on the stirring shaft 4 to generate strong axial flow.

[0035] The core improvement, the guide tube 6, is suspended below the vessel lid 2 and surrounds the stirring blades 5. The guide tube 6 consists of two main parts: the upper guide tube 9 and the lower guide tube 10.

[0036] like Figure 2 The upper guide tube 9 is a single stainless steel cylinder. Four cylindrical upper edges 7 are welded equidistantly to its outer top. An L-shaped cylinder clamp 8 is hinged to the bottom outer side of each cylinder upper edge 7 via a horizontal pivot. The cylinder clamp 8 can rotate around the pivot in a vertical plane. A protruding locking flange is provided at the corresponding position on the edge of the vessel lid 2. During installation, the guide tube 6 is hoisted so that the upper edge 7 is positioned above the edge of the vessel lid 2. Then, the cylinder clamp 8 is rotated downwards to hook onto the locking flange below the vessel lid 2, thus suspending and fixing the entire guide tube 6. This structure is stable and reliable; disassembly only requires rotating the clamp 8 upwards to loosen it.

[0037] A ring-shaped limiting ring 11 is welded to the inner wall of the upper cylinder 9 about 10cm from the bottom.

[0038] like Figure 3 and Figure 4The lower guide cylinder 10 is assembled from eight identical arc-shaped guide vanes 12 via a guide installation structure 13. Each guide vane 12 is made of wear-resistant stainless steel. A rectangular mounting block 14 is welded to one side (left) edge; a mounting groove 15 matching the shape of the mounting block 14 is machined to the other side (right) edge. The mounting groove 15 is a blind groove with an open top and a closed bottom. A silicone rubber sealing strip is pasted inside the groove. During assembly, the mounting block 14 of the first guide vane 12 is aligned vertically with the upper opening of the mounting groove 15 of the second guide vane 12, and then inserted downwards until the bottom of the mounting block 14 contacts the bottom of the mounting groove 15. This process is repeated until all guide vanes 12 are inserted, forming a complete circle. After insertion, the joints of adjacent guide vanes 12 are sealed by the compression of the sealing strip.

[0039] The assembled lower guide cylinder 10 has a top outer diameter slightly smaller than the bottom inner diameter of the upper guide cylinder 9. During installation, the lower guide cylinder 10 is inserted upwards into the upper guide cylinder 9 until its top surface abuts against the limiting retaining ring 11 inside the upper guide cylinder 9, achieving axial positioning. An O-ring fluororubber sealing ring is fitted between the top outer wall of the lower guide cylinder 10 and the bottom inner wall of the upper guide cylinder 9 to seal the radial gap between them.

[0040] like Figure 5 On the inner surface of each guide vane 12, two vertical guide ribs 16 (straight strip-shaped protrusions) with a semi-circular cross-section are welded. These ribs can effectively enhance the shearing and guiding effect on the slurry.

[0041] The working process of this embodiment: Installation and Feeding: First, assemble eight guide vanes 12 outside the reactor into a lower guide cylinder 10 using a plug-in connection. Then, insert the lower guide cylinder 10 into the upper guide cylinder 9, ensuring it rests against the limiting ring 11. Lift the assembled guide cylinder 6, align the upper edge 7 of the cylinder with the edge of the reactor lid 2, lower it, and then rotate the cylinder clamps 8 to lock it onto the reactor lid. Lift the reactor lid 2, containing the guide cylinder 6, onto the reactor body 1, which has already contained some solvent and ceramic powder, and seal it. Finally, install the stirring motor 3 and stirring shaft 4.

[0042] Slurry preparation operation: Start the stirring motor 3, and the stirring shaft 4 drives the stirring blades 5 to rotate at high speed. The blades 5 drive the slurry in the guide tube 6 to move downwards. After flowing out from the bottom of the lower guide tube 10, it turns at the bottom of the vessel body 1 and flows back upwards along the annular gap between the guide tube 6 and the inner wall of the vessel body 1, forming a strong axial circulation. The guide ribs 16 on the guide vane 12 further break up powder agglomeration and promote dispersion. This flow field can efficiently mix ceramic powder, binder and solvent to obtain a uniform and stable diaphragm slurry.

[0043] Cleaning and Maintenance: After each production batch, the reactor needs to be cleaned. The reactor lid 2 can be opened (the guide tube 6 can be lifted out accordingly), or only the tube clamps 8 can be loosened to lift the guide tube 6 separately to the cleaning area. For routine cleaning, simply lift out the entire guide tube 6 for external rinsing. If stubborn deposits or localized wear are found on the inner wall of the lower guide tube 10, the lower guide tube 10 can be easily pulled out of the upper guide tube 9, and then the guide vanes 12 can be disassembled for individual, thorough cleaning or replacement. If only a few guide vanes 16 are worn, only these vanes need to be replaced; the entire lower tube does not need to be replaced. After maintenance, quickly reassemble according to the above installation steps for the next use.

[0044] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A reaction vessel for preparing lithium battery separator slurry, comprising a reaction vessel (1), a vessel cover (2) located on the reaction vessel (1), and a guide tube (6) located inside the reaction vessel (1). Its features are: The guide tube (6) includes, from top to bottom, a detachably connected upper guide tube (9) and a lower guide tube (10), with the top outer wall of the lower guide tube (10) installed into the bottom inner wall of the upper guide tube (9). Several cylinder upper edges (7) are detachably installed on the top of the upper cylinder (9) along the circumferential direction, and the cylinder upper edges (7) are hung on the lid (2); The lower guide cylinder (10) includes a number of guide vanes (12) evenly distributed along the circumference, and two adjacent guide vanes (12) are detachably installed together by a guide installation structure (13).

2. The reaction vessel for preparing lithium battery separator slurry as described in claim 1, characterized in that, A stirring motor (3) is installed in the middle of the lid (2). The stirring motor (3) drives the stirring shaft (4) located in the reactor (1) to rotate. Several stirring blades (5) are installed on the stirring shaft (4).

3. The reaction vessel for preparing lithium battery separator slurry as described in claim 1, characterized in that, A cylinder clamp (8) is installed at the bottom of the outer side of the upper edge (7) of the cylinder, and the cylinder clamp (8) is engaged at the outer edge of the lid (2).

4. The reaction vessel for preparing lithium battery separator slurry as described in claim 3, characterized in that, The cylinder jaws (8) are rotatably mounted on the upper edge (7) of the cylinder.

5. The reaction vessel for preparing lithium battery separator slurry as described in claim 1, characterized in that, An annular retaining ring (11) is provided on the inner wall of the upper guide cylinder (9) near the bottom. The top of the lower guide cylinder (10) abuts against the retaining ring (11), and a sealing ring is installed at the connection between the upper guide cylinder (9) and the lower guide cylinder (10).

6. The reaction vessel for preparing lithium battery separator slurry as described in claim 1, characterized in that, The flow guide installation structure (13) includes an installation block (14) disposed on the first side of the flow guide plate (12) and an installation groove (15) opened on the second side of the flow guide plate (12). The installation block (14) of the previous flow guide plate (12) is inserted into the installation groove (15) of the next flow guide plate (12) in the vertical direction.

7. The reaction vessel for preparing lithium battery separator slurry as described in claim 6, characterized in that, The mounting groove (15) has a structure with an open top and a closed bottom, and a sealing strip is installed inside the mounting groove (15).

8. The reaction vessel for preparing lithium battery separator slurry as described in claim 1, characterized in that, The inner surface of the guide plate (12) is provided with a guide rib (16), which is a spiral structure or a straight protrusion structure extending along the axial direction.

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