Slurry recovery device

Abstract

The utility model discloses a slurry recovery device, which belongs to the technical field of recovery devices and comprises an ejector pin mechanism, a filter screen and a recovery cavity, the ejector pin mechanism is at least provided with a protruding spine so as to damage the surface of an object to be recycled to form a liquid outlet of slurry, and the ejector pin mechanism further comprises a structure for driving the spine to rotate around a shaft outside the spine. According to the slurry recovery device for the bag type filter, the residual slurry in the bag type filter can be collected, the problems of long recovery time and low recovery rate of the residual slurry of the existing bag type filter are solved, and the slurry can be efficiently and fully recovered, so that the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling devices, and particularly relates to a slurry recycling device. Background Art

[0002] In the rapid development of the lithium-ion battery manufacturing industry, the preparation process of lithium battery electrodes has become a key link, and its core lies in uniformly coating a high-quality active material slurry on a metal foil substrate. The purity and uniformity of the slurry directly affect the energy density, cycle life, and safety performance of the battery. However, during the slurry preparation process, it is inevitable to mix in tiny particles. If these particles are not effectively removed, it will seriously affect the coating quality, and even cause scratches on the metal foil, thereby affecting the overall performance of the battery.

[0003] The traditional method generally uses a stainless steel filter screen for slurry filtration. Although this method can initially remove impurities, due to problems such as poor quality control of the stainless steel filter screen, unstable filtration accuracy, and short service life, modern lithium battery production has gradually shifted to using a capsule filter device to replace the stainless steel filter screen. Among such devices, there is a soft capsule filter in the prior art, and through the design of wrapping the filter element with a soft capsule, the filtration efficiency and operation convenience have been significantly improved.

[0004] However, with the expansion of production scale and the increasing requirements for cost control, the capsule filter has gradually exposed its limitations in application: during long-term filtration operations, a large amount of unutilized slurry is likely to accumulate inside the filter element. Once the capsule filter reaches the end of its service life and needs to be replaced, the direct abandonment of this residual slurry not only causes waste of resources, but also increases the operating costs of the enterprise. Moreover, the larger the volume of the capsule filter, the more slurry is wasted each time. Particularly troublesome is that the capsule filter is generally not easy to disassemble or is designed as a non-detachable integrated structure, making it extremely difficult to recycle the slurry through conventional means. Even if attempts are made to recycle it through static drainage, it also faces challenges such as long time consumption, low recycling efficiency, and easy introduction of pollutants, and it is difficult to meet the modern requirements of high-efficiency and clean production.

[0005] In addition, most of the current slurry recycling devices on the market focus on the recycling function, but lack secondary guarantee for the quality of the slurry during the recycling process, that is, they cannot effectively combine the dual requirements of recycling and filtration. Therefore, designing a new type of recycling device that can efficiently recycle the residual slurry in the capsule filter and ensure the quality of the recycled slurry is of great significance for improving the production efficiency of lithium batteries, reducing production costs, and promoting resource recycling. Summary of the Utility Model

[0006] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a slurry recycling device, aiming to solve the problems of difficult and inefficient slurry recycling in the existing capsule filter and the difficulty in guaranteeing the quality of the recycled slurry. To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A slurry recovery device includes a thimble mechanism, a filter screen, and a recovery chamber that are sequentially arranged below the thimble mechanism; the thimble mechanism at least has protruding spikes to break the surface of the object to be recovered to form a liquid outlet for the slurry, and the thimble mechanism further includes a structure for driving the spikes to rotate around an axis outside the spikes themselves.

[0008] Further, the thimble mechanism includes a thimble and a first rotating body fixedly connected to the thimble. The thimble is arranged offset from the center position of the first rotating body, and the thimble protrudes to form the spikes.

[0009] Further, the first rotating body at least forms a through hole so that the slurry can pass through the hole and reach the filter screen.

[0010] Further, the thimble mechanism includes a driving motor and a second rotating body fixedly connected to the output end of the driving motor; the first rotating body and the second rotating body are meshed.

[0011] Further, the filter screen is detachably arranged inside a cylinder body, and a recovery chamber is formed inside the cylinder body.

[0012] Further, an annular concave platform is provided at the upper end of the cylinder body, and the filter screen is provided with an eaves extending radially outward. The eaves are used for lapping on the annular concave platform of the cylinder body; a groove is provided on the annular concave platform, and a protrusion is provided on the eaves. The protrusion is fitted in the groove.

[0013] Further, the filter screen is of an arc-shaped structure.

[0014] Further, a cover body is provided at the upper part of the cylinder body, the thimble mechanism is arranged on the cover body, and a sealing ring is provided at the connection between the cylinder body and the cover body.

[0015] Further, a discharge port is provided at the bottom of the cylinder body, and a control valve for controlling the opening and closing of the discharge port is provided on the discharge port.

[0016] Further, a support frame is fixedly installed at the bottom of the cylinder body.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. The slurry recovery device provided by the present utility model, by arranging a rotatable thimble mechanism, is convenient for stirring the slurry in the capsule filter, enabling the slurry to better flow into the cylinder body, realizing the collection of the residual slurry in the capsule filter, solving the problems of long recovery time and low recovery rate of the residual slurry in the existing capsule filter, enabling the slurry to be recovered efficiently and fully, thereby saving production costs.

[0019] 2. The slurry recovery device provided by the utility model can re-filter the slurry during the recovery process by arranging a filter screen in the recovery cylinder body, ensuring the quality of the recovered slurry. At the same time, the filter screen is detachably connected to the cylinder body, facilitating the replacement of filter screens of different specifications and models to filter slurries of different specifications. It is also convenient to replace when the filter screen is damaged or blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a slurry recovery device provided by the utility model;

[0021] Figure 2 is Figure 1 an enlarged view of part A in

[0022] Figure 3 is Figure 1 an enlarged view of part B in

[0023] Figure 4 is a schematic structural diagram of a thimble mechanism of a slurry recovery device provided by the utility model;

[0024] In the drawings: 1. Cylinder body; 11. Discharge port; 12. Support frame; 111. Control valve; 2. Cover body; 21. Feed port; 22. Arc-shaped connecting piece; 3. Thimble mechanism; 31. Thimble; 32. First rotating body; 33. Driving motor; 34. Second rotating body; 5. Filter screen; 51. Eaves; 511. Protrusion; 6. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further details the present utility model in conjunction with the drawings and specific embodiments, but the present utility model is not limited to the following embodiments.

[0026] Embodiment 1:

[0027] See the appendix Figures 1 to 4。This embodiment provides a slurry recovery device. During the production process of lithium batteries, when the cartridge filter used for filtering coating slurry reaches the end of its service life and needs to be replaced, the residual slurry in the cartridge filter of this type can be recovered by the slurry recovery device provided by the present utility model. The slurry recovery device specifically includes a thimble mechanism 3, a filter screen 5 and a recovery chamber sequentially arranged below the thimble mechanism 3; the thimble mechanism 3 at least has protruding spikes to break the surface of the object to be recovered to form a liquid outlet for the slurry. The thimble mechanism 3 further includes a structure for driving the spikes to rotate around an axis outside the spikes themselves. On the one hand, it makes the liquid outlet for the slurry formed by the spikes on the surface of the object to be recovered larger, facilitating the outflow of the slurry; on the other hand, it also makes the spikes agitate the slurry inside the object to be recovered, which also facilitates the outflow of the slurry. The filter screen 5 can be a planar mesh structure or an arc structure. The filter screen 5 can re-filter the slurry during the recovery process, effectively ensuring the quality of the recovered slurry and facilitating the secondary utilization of the slurry. The recovery chamber can be used to store the recovered slurry.

[0028] During slurry recovery, the spikes of the thimble mechanism 3 are inserted into the cartridge filter, piercing the surface of the cartridge filter to form a liquid outlet for the slurry, so that the residual slurry in the cartridge filter can first flow through the filter screen 5 through the liquid outlet and finally flow into the recovery chamber. The flowing-in slurry can be temporarily stored in the recovery chamber or directly used for secondary utilization.

[0029] Embodiment Two:

[0030] See Attachment Figures 1 to 4 。Based on Embodiment One, in this embodiment, specifically, the structure of the thimble mechanism 3 is as shown in Figure 1 and Figure 4 The thimble mechanism 3 includes a thimble 31 and a first rotating body 32. The thimble 31 and the first rotating body 32 are fixedly connected. For example, the thimble 31 can be fixedly connected to the first rotating body 32 through a connecting crossbar provided on the first rotating body 32. The thimble 31 is arranged deviating from the center position of the first rotating body 32, and the thimble protrudes to form a spike. The first rotating body 32 can be a gear structure and can be driven to rotate by an electric drive method, thereby driving the thimble 31 to rotate around an axis outside the thimble 31 itself. The first rotating body 32 at least forms a through hole so that the slurry can pass through the hole to reach the filter screen.

[0031] In this embodiment, the thimble mechanism 3 further includes a driving motor 33 and a second rotating body 34. The second rotating body 34 is fixedly connected to the output end of the driving motor 33. At the same time, the second rotating body 34 meshes with the first rotating body 32. The second rotating body 34 can be a gear structure. When the driving motor 33 works, the driving motor 33 drives the second rotating body 34 to rotate, thereby driving the first rotating body 32 and the thimble 31 fixedly connected to the first rotating body 32 to rotate synchronously.

[0032] The slurry recovery device provided by the utility model facilitates the agitation of the slurry in the capsule filter by arranging a rotatable ejector mechanism 3, enabling the slurry to better flow into the recovery cavity, realizing the collection of the residual slurry in the capsule filter, solving the problems of long residual slurry recovery time and low recovery rate of the existing capsule filter, enabling the slurry to be efficiently and fully recovered, and thus saving production costs.

[0033] Embodiment Three:

[0034] See Appendix Figures 1 to 4 Based on Embodiment Two, in this embodiment, the filter screen 5 is detachably connected to the cylinder body 1, and a recovery cavity is formed inside the cylinder body 1. When it is necessary to filter slurries of different specifications or when the filter screen 5 is damaged or blocked, it is convenient to quickly replace the filter screen 5.

[0035] Specifically, the detachable connection method between the filter screen 5 and the cylinder body 1 is as follows: as Figure 3 shown, an annular concave platform is provided at the upper end of the cylinder body 1, and the filter screen 5 is provided with an eaves 51 extending radially outward, and the eaves 51 is used to lap on the annular concave platform of the cylinder body 1. At the same time, grooves can also be provided on the annular concave platform, and protrusions 511 are provided on the eaves 51. When the eaves 51 laps on the annular concave platform, the protrusions 511 are fitted into the grooves, which further facilitates the installation and fixation of the filter screen 5.

[0036] In this embodiment, the filter screen 5 is of an arc-shaped structure. Due to the large arc-shaped filtering surface of the arc-shaped filter screen 5, the filtering area is increased, and the filtering efficiency can be improved.

[0037] The slurry recovery device provided by the utility model can filter the slurry again during the recovery process by arranging a detachable filter screen 5 inside the cylinder body 1, ensuring the quality of the recovered slurry; at the same time, it is also convenient for the disassembly and replacement of the filter screen 5.

[0038] Embodiment Four:

[0039] See Appendix Figures 1 to 4 Based on Embodiment Three, in this embodiment, the upper part of the cylinder body 1 is provided with a cover body 2, the ejector mechanism 3 is arranged on the cover body 2, and a sealing ring 6 is provided at the connection between the cylinder body 1 and the cover body 2. The sealing ring 6 can be used to seal the connection between the cylinder body 1 and the cover body 2 to prevent the slurry from overflowing.

[0040] Preferably, the barrel 1 and the cover 2 are detachably connected. For example, threaded holes are provided on both the barrel 1 and the cover 2, and the two are connected by bolts. A feed port 21 can be provided on the cover 2, and the first rotating body 32 can be rotatably connected to the cover 2. When the ejector pin 31 is inserted into the capsule filter, the rotating first rotating body 32 can drive the ejector pin 31 to rotate, thereby stirring the residual slurry in the capsule filter, so that the slurry can flow into the barrel 1 better. Specifically, the first rotating body 32 and the cover 2 are rotatably connected in the following manner: Figure 2 As shown, an arc-shaped connecting member 22 is detachably connected below the feed port 21, and an annular groove is provided on the inner wall of the first rotating body 32, and the annular groove cooperates with the arc-shaped connecting member 22. The structure of the arc-shaped connecting member 22 can be as follows Figure 4 As shown, the arc-shaped connector 22 can be connected to the bottom surface of the cover body 2 by bolts, and a plurality of arc-shaped connectors 22 can be enclosed to form a ring. Preferably, the arc-shaped connector 22 can be a semicircular structure, and the number of the arc-shaped connectors 22 is set to two. The arc-shaped connector 22 has an outward connecting portion. When the first rotating body 32 and the arc-shaped connector 22 are connected, the connecting portion of the arc-shaped connector 22 is embedded in the annular groove provided on the inner wall of the first rotating body 32, so that the first rotating body 32 is rotatably connected to the cover body 2 through the arc-shaped connector 22. When the first rotating body 32 is subjected to an external force, the first rotating body 32 can rotate relative to the arc-shaped connector 22. The second rotating body 34 can be arranged on the bottom surface of the cover body 2, and the driving motor 33 can be arranged above the cover body 2, and the output shaft of the driving motor 33 passes through the cover body 2 and is connected to the second rotating body 34.

[0041] In this embodiment, a discharge port 11 is provided at the bottom of the cylinder 1, and the discharge port 11 is connected to the inside of the cylinder 1, so that the slurry in the cylinder 1 can flow out through the discharge port 11 for secondary utilization; a control valve 111 for controlling the opening and closing of the discharge port 11 can also be provided on the discharge port 11, so that the discharge port 11 has two states of opening and closing.

[0042] In this embodiment, a support frame 12 is fixedly installed at the bottom of the cylinder 1, and the support frame 12 can be used to support the cylinder 1, so that the whole device is stable and does not tilt. For example, the number of the support frames 12 can be four and they are distributed in a rectangular array.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0044] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0045] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0046] In the description of the present utility model, that the first feature is "above" or "below" the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but in contact through additional features therebetween.

[0047] In the description of the present utility model, that the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature.

[0048] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0049] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A slurry recovery device, characterized in that: It includes a thimble mechanism (3), a filter screen (5) and a recovery cavity which are sequentially arranged below the thimble mechanism (3); the thimble mechanism (3) at least has protruding spikes to break the surface of the object to be recycled to form a liquid outlet for the slurry, and the thimble mechanism (3) further includes a structure for driving the spikes to rotate around an axis outside the spikes themselves.

2. The slurry recovery device according to claim 1, wherein: The thimble mechanism (3) includes a thimble (31) and a first rotating body (32) fixedly connected to the thimble (31), the thimble (31) is arranged deviating from the center position of the first rotating body (32), and the thimble protrudes to form the spikes.

3. A slurry recovery device according to claim 2, wherein: The first rotating body (32) at least forms a through hole for the slurry to pass through the hole to reach the filter screen.

4. A slurry recovery device according to claim 2, characterized in that: The thimble mechanism (3) includes a driving motor (33) and a second rotating body (34) fixedly connected to the output end of the driving motor (33); the first rotating body (32) and the second rotating body (34) are meshed.

5. A slurry recovery device according to claim 1, characterized in that: The filter screen (5) is detachably arranged inside the cylinder body (1), and a recovery cavity is formed inside the cylinder body (1).

6. The slurry recovery device according to claim 5, wherein: An annular concave platform is provided at the upper end of the cylinder body (1), the filter screen (5) is provided with an eaves (51) extending radially outward, and the eaves (51) are used for lapping on the annular concave platform of the cylinder body (1); a groove is provided on the annular concave platform, and a protrusion (511) is provided on the eaves (51), and the protrusion (511) is fitted in the groove.

7. The slurry recovery device according to claim 6, characterized in that: The filter screen (5) is an arc-shaped structure.

8. A slurry recovery device according to claim 5, characterized in that: A cover body (2) is provided at the upper part of the cylinder body (1), the thimble mechanism (3) is arranged on the cover body (2), and a sealing ring (6) is provided at the connection between the cylinder body (1) and the cover body (2).

9. A slurry recovery device according to claim 5, characterized in that: A discharge port (11) is provided at the bottom of the cylinder body (1), and a control valve (111) for controlling the opening and closing of the discharge port (11) is provided on the discharge port (11).

10. A slurry recovery device according to claim 5, characterized in that: A support frame (12) is fixedly installed at the bottom of the cylinder body (1).

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