Screen device for filtering small amount of slurry
By designing a screen device with a large neck and head internal space, the problem of difficult filtration of high viscosity slurry is solved, ensuring smooth slurry filtration in the lithium battery production process, reducing losses and improving filtration reliability .
Patent Information
- Application Number
- CN202420348698.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-23
AI Technical Summary
During the production process of lithium batteries, high viscosity slurry is difficult to filter through the screen, resulting in the inability to determine whether it can be filtered, which may cause slurry loss and production failure.
A screen device is designed, including a coaxially arranged tail, neck and head. The internal space of the neck and head is larger than the tail. The screen is sandwiched between the neck and head and fixed by fasteners to increase the The pressure of the inner space of the neck ensures that the slurry can pass through the screen and prevent leakage through the sealing ring and pressurization device.
Effectively determine whether high-viscosity slurry can pass through the screen, ensuring the smooth progress of experiments and production, reducing slurry losses, and improving filtration reliability.
Smart Images
Figure CN222151038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a screen device used for filtering positive and negative electrode slurries of a small amount of secondary batteries (such as lithium batteries). Background Art
[0002] With the continuous increase in the market share of new energy vehicles, a good platform will be provided for the vigorous development of the power battery industry, thereby accelerating the development of the battery industry.
[0003] The production process of secondary batteries (such as lithium batteries) cannot be separated from the coating process. Before the coating operation of the positive and negative electrode slurries, the slurries need to be screened to remove the slurries with oversized particles.
[0004] However, when the viscosity of the slurry is very high, it is uncertain whether the slurry can be sieved. If the slurry cannot be sieved directly, it will cause slurry loss and failure of the experiment or production. But if a small amount of slurry is taken for sieving, due to the high viscosity and cohesive force of the slurry, the slurry cannot pass through the screen under the action of its own gravity.
[0005] Therefore, a screen device for filtering a small amount of slurry is provided to overcome one or more of the above-mentioned drawbacks. Utility Model Content
[0006] One purpose of the utility model is to provide a screen device suitable for filtering a small amount of slurry to help the experiment proceed smoothly.
[0007] To achieve the above purpose, the screen device for filtering a small amount of slurry of the utility model comprises a screen and a cylinder. The cylinder comprises a tail, a neck and a head which are coaxially arranged and connected in sequence, and the neck and the head also radially protrude outward from the tail, so that the radial dimensions of the internal spaces of the neck and the head are larger than the radial dimensions of the internal space of the tail. The screen is sandwiched between the neck and the head, and the screen separates the internal spaces of the neck and the head.
[0008] Compared with the prior art, since the neck and the head further protrude radially outward from the tail, so that the radial dimensions of the internal spaces of the neck and the head are larger than the radial dimensions of the internal space of the tail, the slurry in the internal space of the neck is subjected to more pressure from the slurry above, that is, the slurry pressure in the internal space of the tail. Therefore, when operating with a small amount of slurry, it is possible to determine whether the slurry can pass through the sieve of the corresponding mesh number, thereby helping the smooth progress of the experiment.
[0009] Preferably, the screen device of the utility model further comprises a fastener, wherein the fastener is inserted into the head and the neck along the axial direction of the cylinder, and the fastener also fixes the head and the neck together.
[0010] Preferably, the fastener is a screw passing through the head and threadedly connected to the neck.
[0011] Preferably, a first sealing ring is sandwiched between the neck and the screen, a second sealing ring is provided between the head and the screen, the first sealing ring is arranged to be offset outward relative to the internal space of the neck, the second sealing ring is arranged to be offset outward relative to the internal space of the head, and the fastener is located next to the outer sides of the first sealing ring and the second sealing ring.
[0012] Preferably, the fasteners are multiple and arranged in a circle at intervals in the circumferential direction of the cylinder, and all the fasteners together surround the first sealing ring and the second sealing ring from the side.
[0013] Preferably, the tail portion and the neck portion are detachably assembled and connected.
[0014] Preferably, one of the tail portion and the neck portion is provided with an external thread, and the other of the tail portion and the neck portion is provided with an internal thread connected to the external thread.
[0015] Preferably, the axial dimension of the tail portion is larger than the axial dimensions of the neck portion and the head portion, respectively.
[0016] Preferably, the outer contours of the cross sections of the tail, neck and head are circular, elliptical or regular polygonal.
[0017] Preferably, the screen device of the present invention further comprises a pressurizing device for pressurizing the internal space of the tail portion. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a plan view of the screen device of the utility model.
[0019] Figure 2 is along Figure 1 Internal view cut along the midline BB.
[0020] Figure 3 yes Figure 2 An internal view of the tail of the cylinder.
[0021] Figure 4 yes Figure 2 Interior view after the rear of the barrel is hidden.
[0022] Figure 5 It is a plan view of the head portion of the screen device of the utility model. DETAILED DESCRIPTION
[0023] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements.
[0024] See also Figure 1 and Figure 2 The screen device 100 of the utility model is suitable for filtering a small amount of slurry to meet the need of judging whether the slurry can pass through the screen 10 of corresponding mesh number during the filtering operation of a small amount of slurry, thereby helping the smooth progress of the experiment.
[0025] The screen device 100 of the utility model comprises a screen 10 and a cylinder 20. The cylinder 20 comprises a tail 21, a neck 22 and a head 23 which are coaxially arranged and sequentially connected; the neck 22 and the head 23 also radially protrude outward from the tail 21, so that the radial dimension D of the inner space 221 of the neck 22 is 2 Greater than the radial dimension D of the inner space 211 of the tail portion 21 1 , and the radial dimension D of the inner space 231 of the head 23 3 Greater than the radial dimension D of the inner space 211 of the tail portion 21 1 , status see Figure 2 The screen 10 is sandwiched between the neck 22 and the head 23, and the screen 10 is fixed by the neck 22 and the head 23; at this time, the screen separates the internal space 221 of the neck 22 from the internal space 231 of the head 23, so as to meet the need that the slurry entering the internal space 221 of the neck 22 is filtered by the screen 10 and then flows to the internal space 231 of the head 23. Specifically, Figure 2 and Figure 4 As an example, the screen device 100 of the utility model further includes a fastener 30, which is inserted into the head 23 and the neck 22 along the axial direction of the cylinder 10 (i.e., the direction indicated by the double arrow A), and the fastener 30 also fixes the head 23 and the neck 22 together. This design makes the head 23 and the neck 22 detachably connected, thereby facilitating the assembly and replacement of the screen 10; obviously, in other embodiments, the screen 10, the head 23 and the neck 22 can also be molded together by in-mold molding, so that the screen 10, the neck 22 and the head 23 are not removable, so it is not necessary to use Figure 2 and Figure 4 More specifically, as follows:
[0026] like Figure 1 , Figure 2 and Figure 4As shown, as an example, a first sealing ring 40 is sandwiched between the neck 22 and the screen 10, and a second sealing ring 50 is disposed between the head 23 and the screen 10. The first sealing ring 40 is arranged to be offset outward relative to the internal space 221 of the neck 22, and the second sealing ring 50 is arranged to be offset outward relative to the internal space 231 of the head 23. With the help of the setting of the first sealing ring 40, the slurry in the internal space 221 of the neck 22 is prevented from leaking outward from the matching point between the neck 22 and the screen 10. Similarly, with the help of the setting of the second sealing ring 50, the slurry is prevented from leaking outward from the matching point between the screen 10 and the head 23. In addition, the fastener 30 is located next to the outside of the first sealing ring 40 and the second sealing ring 50, as shown in the state. Figure 4 Specifically, combined with Figure 5 As an example, there are four fasteners 30 and they are arranged in a circle at intervals in the circumferential direction of the cylinder 20, and all the fasteners 30 together surround the first sealing ring 40 and the second sealing ring 50 from the side. This design is to increase the reliability of fixing the neck 22, the head 23, the screen 10, the first sealing ring 40 and the second sealing ring 50 together; obviously, according to actual needs, the number of fasteners 30 can also be two, three or five. More specifically, as an example, the fastener 30 is a screw that passes through the head 23 and is threadedly connected to the neck 22, so as to simplify the structure of the fastener 30 and facilitate the assembly and disassembly operations between the head 23 and the neck 22. It should be noted that since the fastener 30 passes through the head 23, Figure 5 In the figure, a through hole 232 is provided on the nose 23 for the fastener 30 to pass through the through hole 232. Optionally, as an example, the through hole 231 is a countersunk hole so that the fastener 30 can be completely sunk into the through hole 232 to prevent the fastener 30 from partially protruding outward from the nose 23 along the axial direction of the cylinder 10.
[0027] like Figures 2 to 4 As shown, as an example, the tail 21 and the neck 22 are detachably connected to facilitate the assembly and disassembly of the tail 21 and the neck 22, so as to facilitate the operator to replace the screen 10 of different meshes. Figures 2 to 4In the embodiment, as an example, the tail 21 is provided with an external thread 212, and the neck 22 is provided with an internal thread 222 connected to the external thread 212. This design enables the tail 21 and the neck 22 to be assembled and disassembled by means of a threaded connection, thereby making the assembly and disassembly connection between the tail 21 and the neck 22 more convenient, and can also ensure the sealing effect of the fitting between the tail 21 and the neck 22. In addition, the axial dimension of the tail 21 is respectively larger than the axial dimensions of the neck 22 and the head 23. The purpose of this design is to increase the axial dimension of the internal space 211 of the tail 21, so that the slurry at the internal space 211 of the tail 21 is higher and exerts greater pressure on the slurry at the internal space 221 of the neck 22. More specifically, as an example, the outer contour of the cross section of the tail 21, the neck 22 and the head 23 is circular to facilitate the manufacture of the cylinder 10; obviously, according to actual needs, the outer contour of the cross section of the tail 21, the neck 22 and the head 23 can also be an ellipse or a regular polygon. It should be noted that although Figures 2 to 4 The tail portion 21 is shown to have an external thread 212 and the neck portion 22 is shown to have an internal thread 222. However, according to actual needs, the external thread 212 and the internal thread 222 may be swapped, that is, the external thread 212 may be provided by the neck portion 22 and the internal thread 222 may be provided by the tail portion 21. Figures 2 to 4 In addition, the diameter and height of the tail 21 can be set to different specifications according to specific needs, and even the shape can be changed to meet the application scenario, but it should be noted that it should not be too thin to avoid the influence of capillary action.
[0028] Compared with the prior art, the neck 22 and the head 23 further protrude radially outward from the tail 21, so that the radial dimension D of the inner space 221 of the neck 22 is 2 Greater than the radial dimension D of the inner space 211 of the tail portion 21 1 , and the radial dimension D of the inner space 231 of the nose 23 3 Greater than the radial dimension D of the inner space 211 of the tail portion 21 1 , so that the slurry in the internal space 221 of the neck 22 is subjected to more pressure from the slurry above, that is, the slurry pressure in the internal space 211 of the tail 21. Therefore, when operating with a small amount of slurry, it is possible to determine whether the slurry can pass through the sieve 10 of the corresponding mesh number, so as to help the experiment proceed smoothly.
[0029] It should be noted that, in other embodiments, in order to resist the viscosity of the slurry on the cylinder 10, the screen device 100 of the utility model also includes a pressurizing device for pressurizing the internal space 211 of the tail portion 21, and the pressurizing device can be a plunger or an electronic pressurizing device; when the pressurizing device is a plunger, the plunger can be compressed and slid in the internal space 211 of the tail portion 21, so as to achieve the purpose of pressurizing the slurry in the internal space 211 of the tail portion 21.
[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.
Claims
1. A screen device for filtering a small amount of slurry, comprising a screen and a cylinder, characterized in that: The cylinder includes a tail, a neck and a head which are coaxially arranged and connected in sequence. The neck and the head also protrude radially outward from the tail so that the radial dimensions of the internal spaces of the neck and the head are larger than the radial dimensions of the internal space of the tail. The screen is sandwiched between the neck and the head, and the screen separates the internal spaces of the neck and the head.
2. The screen device according to claim 1, characterized in that: It also includes a fastener, which is inserted into the head and the neck along the axial direction of the cylinder, and the fastener also fixes the head and the neck together.
3. The screen device according to claim 2, characterized in that: The fastener is a screw that passes through the head and is threadedly connected to the neck.
4. The screen device according to claim 2, characterized in that: A first sealing ring is sandwiched between the neck and the screen, a second sealing ring is arranged between the head and the screen, the first sealing ring is arranged to be offset outward relative to the internal space of the neck, the second sealing ring is arranged to be offset outward relative to the internal space of the head, and the fastener is located next to the outer sides of the first sealing ring and the second sealing ring.
5. The screen device according to claim 4, characterized in that: There are a plurality of fasteners arranged in a circle at intervals in the circumferential direction of the cylinder, and all of the fasteners together surround the first sealing ring and the second sealing ring from the side.
6. The screen device according to claim 1, characterized in that: The tail portion and the neck portion are detachably assembled and connected.
7. The screen device according to claim 6, characterized in that: One of the tail portion and the neck portion is provided with an external thread, and the other of the tail portion and the neck portion is provided with an internal thread connected to the external thread.
8. The screen device according to claim 1, characterized in that: The axial dimensions of the tail portion are respectively larger than the axial dimensions of the neck portion and the head portion.
9. The screen device according to claim 1, characterized in that: The cross-sectional outer contours of the tail, neck and head are circular, elliptical or regular polygonal.
10. The screen device according to claim 1, characterized in that: Also included is a pressurizing device for pressurizing the internal space of the tail portion.