A vibrating screening apparatus for a cathode material

Abstract

The utility model discloses a positive electrode material's vibrating screening equipment relates to battery production equipment technical field, including box, the screen that is fixed in the box in and with the vibrator that is linked to the box, and the vibrator is used for driving the box to drive the screen vibration, the screening of the screen includes the sieve and the sieve, and the box is equipped with the feeding cavity, and the feeding cavity includes the first feeding slope that forms in the screen and is located the second feeding slope below the screen, and the feeding side of both first feeding slope and second feeding slope is higher than its discharge side setting, and first feeding slope is used for the inclined conveying sieve with the excitation force of screen, and second feeding slope is used for the inclined conveying sieve with the excitation force of screen. The equipment sets up the screening and the conveying function as a whole, and only needs single equipment to replace the double equipment system that the screw conveyor and the vibrating screen constitute originally, through reducing the equipment quantity, not only reduces the floor area, also reduces the energy consumption, thereby effectively reduces the production cost.

Description

Technical Field

[0001] This utility model relates to the field of battery production equipment technology, and in particular to a vibrating screening device for positive electrode materials. Background Technology

[0002] Screening is a crucial step in the production of cathode materials for lithium-ion batteries. Effective screening can significantly reduce the content of foreign matter such as impurities and large metal particles in the product, preventing these foreign matter from causing localized heating or puncturing the separator inside the battery, thus ensuring that the final quality and safety performance of the battery product meet the standards.

[0003] In the production of cathode materials, screw conveyors are commonly used for short-distance material transport. Because cathode materials are generally quite hard, they continuously experience mechanical friction and collisions with the screw and tube walls during transport, generating tiny metal fragments. These fragments, acting as magnetic materials, become mixed into the cathode material. As production continues, they accumulate, significantly increasing the content of magnetic foreign matter in the product and severely impacting battery safety. To mitigate the risks posed by magnetic foreign matter, current production processes typically include a vibrating screen after the conveying process to remove impurities. However, both the screw conveyor and the vibrating screen are separate systems, requiring dedicated power systems. This not only increases the floor space required but also leads to higher energy consumption due to dual power source operation, hindering production cost control. Utility Model Content

[0004] The purpose of this utility model is to provide a vibrating screening device for positive electrode materials. The first and second feeding inclined surfaces inside the box are arranged in an inclined manner. When the vibrator drives the screen to vibrate through the box, screening and conveying are integrated, which reduces the area occupied and energy consumption, thereby effectively reducing production costs and improving the technical problem of difficult production cost control caused by existing dual equipment.

[0005] To achieve the above objectives, this utility model provides a vibrating screening device for positive electrode materials, including a housing, a screen fixed inside the housing, and a vibrator connected to the housing. The vibrator is used to drive the housing to vibrate the screen. The screening material of the screen includes oversize material and undersize material.

[0006] The box is equipped with a feeding chamber, which includes a first feeding inclined surface formed on the screen and a second feeding inclined surface located below the screen. The feed side of both the first and second feeding inclined surfaces is higher than their discharge side. The first feeding inclined surface is used to tilt and convey the oversize material with the help of the excitation force of the screen, and the second feeding inclined surface is used to tilt and convey the undersize material with the help of the excitation force of the screen.

[0007] In some embodiments, the housing includes a top side plate and a bottom side plate located on the upper and lower sides of the screen, respectively, and the top side plate, the screen, and the bottom side plate are parallel to each other; it also includes a support frame, which includes a first leg and a second leg fixedly connected to the bottom side plate of the housing, respectively, with the first leg being higher than the second leg.

[0008] In some embodiments, a feed cylinder is provided at one end of the top side plate, and the feed cylinder is located on the same side as the feed side of the first feeding slope; an adjusting plate is provided inside the feed cylinder, and the adjusting plate is used to adjust the opening of the feed cylinder.

[0009] In some embodiments, the adjusting plate includes a rotating part rotatably disposed on the feed cylinder and a locking part fixedly connected to the rotating part; the locking part is provided with a positioning hole, and the cylinder wall of the feed cylinder is provided with a plurality of adjusting holes, wherein a locking pin is provided between one of the adjusting holes and the positioning hole.

[0010] In some embodiments, a crusher fixed to the housing is further included, with the crushing section of the crusher extending into the housing; the crushing section is located between the feed cylinder and the first feeding ramp, and is used to impact and crush the material flowing from the feed cylinder to the first feeding ramp.

[0011] In some embodiments, a first discharge cylinder and a second discharge cylinder are provided at the end of the housing away from the feed cylinder, the first discharge cylinder being located on the discharge side of the first feeding ramp; and the second discharge cylinder being located on the discharge side of the second feeding ramp.

[0012] In some embodiments, the bottom side plate is connected to the support frame via a resilient connector.

[0013] In some embodiments, the top side plate has a dustproof port at the end away from the feed cylinder, and the dustproof port is equipped with a filter; and / or, the top side plate has at least one observation port.

[0014] In some embodiments, one side of the box is open, and the screen is installed inside the box through the open; a side cover is detachably provided at the open.

[0015] In some embodiments, the side cover is provided with a first slot on the side facing the opening, and the inner wall of the box body is provided with a second slot on the side facing the opening. The screen includes a first frame and a second frame disposed opposite to each other. The first frame engages with the first slot, and the second frame engages with the second slot.

[0016] Compared with the prior art, the present invention optimizes the structure of the vibrating screening equipment for positive electrode materials. The optimized vibrating screening equipment includes a box, a screen fixed in the box, and a vibrator connected to the box. The feeding chamber of the box includes a first feeding inclined surface formed on the screen and a second feeding inclined surface located below the screen.

[0017] When the vibrator vibrates, on the one hand, the vibrator drives the housing to vibrate synchronously with the screen. The screen screen screens the material through high-frequency vibration, producing screened material including oversize material that does not pass through the screen and undersize material that passes through the screen, thus achieving the screening function. On the other hand, both the first and second feeding ramps are arranged with the inlet side higher than the outlet side. During the screening process, the excitation force generated by the screen causes the oversize and undersize materials to undergo a combined throwing and sliding motion, so that both types of screened materials are subjected to a downward resultant force. Thus, the first feeding ramp tilts to transport the oversize material with the help of the screen's excitation force, and the second feeding ramp tilts to transport the undersize material with the help of the screen's excitation force, thus achieving the conveying function.

[0018] This utility model of vibrating screening equipment integrates screening and conveying functions into one unit. This highly integrated design requires only one unit to replace the original dual-equipment system consisting of a screw conveyor and a vibrating screen. By reducing the number of equipment, it not only reduces the floor space occupied but also reduces energy consumption, thereby effectively reducing production costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a front view of the vibrating screening equipment for positive electrode materials provided in an embodiment of this utility model;

[0021] Figure 2 for Figure 1 Side view.

[0022] The attached figures are labeled as follows:

[0023] Box 1, screen 2, vibrator 3, support frame 4, and crusher 5;

[0024] The first feeding slope 101 and the second feeding slope 102;

[0025] Top side plate 11, bottom side plate 12, feed cylinder 13, first discharge cylinder 14 and second discharge cylinder 15, side cover 16 and latch 17;

[0026] Filter 111 and observation port 121;

[0027] Adjustment plate 131;

[0028] Rotating part 1311 and locking part 1312;

[0029] First leg 41 and second leg 42;

[0030] Fragmentation section 51 Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This utility model discloses a vibrating screening device for positive electrode materials, as shown in the attached figure. Figure 1 and 2 As shown, the device includes a housing 1, a screen 2, and a vibrator 3. The screen 2 is fixed inside the housing 1 and is used to screen materials. The materials screened by the screen 2 include oversize material located above the screen 2 and undersize material located below the screen 2. The material mentioned in the text can be the positive electrode material of a lithium-ion battery. The screen 2 removes magnetic foreign objects and other impurities from the positive electrode material through screening.

[0034] As attached Figure 1 and 2 As shown, the vibrator 3 is fixedly connected to the housing 1 and is used to drive the housing 1 to drive the screen 2 to vibrate synchronously. In a preferred embodiment, the vibrator 3 is fixedly connected to the bottom side plate 12 of the housing 1.

[0035] As attached Figure 1 As shown, the housing 1 has a feeding chamber, and the screen 2 is located inside the feeding chamber. The screen 2 divides the feeding chamber into a first feeding chamber and a second feeding chamber, which are independent of each other. The first feeding chamber is located above the screen 2, and the second feeding chamber is located below the screen 2. Accordingly, the feeding chamber includes a first feeding inclined surface 101 formed on the screen 2 and a second feeding inclined surface 102 located below the screen 2. The first feeding inclined surface 101 is the bottom side of the first feeding chamber, and the second feeding inclined surface 102 is the bottom side of the second feeding chamber. The inlet side of both the first feeding inclined surface 101 and the second feeding inclined surface 102 is set higher than their outlet side, that is, both the first feeding inclined surface 101 and the second feeding inclined surface 102 are arranged in an inclined manner.

[0036] When the vibrator 3 vibrates, on the one hand, the vibrator 3 drives the housing 1 to drive the screen 2 to vibrate synchronously. The screen 2 screens the material through high-frequency vibration. The screened material includes the oversize material that does not pass through the screen 2 and the undersize material that passes through the screen 2, thus realizing the screening function. On the other hand, the first feeding inclined surface 101 and the second feeding inclined surface 102 are both arranged with the feed side higher than the discharge side. During the screening process, the excitation force generated by the screen 2 causes the oversize material and the undersize material to make a combined throwing and sliding motion. This causes both types of screened material to be subjected to the resultant force of tilting downward. Thus, the first feeding inclined surface 101 tilts and conveys the oversize material with the help of the excitation force of the screen 2, and the second feeding inclined surface 102 tilts and conveys the undersize material with the help of the excitation force of the screen 2, thus realizing the conveying function.

[0037] This utility model of vibrating screening equipment integrates screening and conveying functions into one unit. This highly integrated design requires only one unit to replace the original dual-equipment system consisting of a screw conveyor and a vibrating screen. By reducing the number of equipment, it not only reduces the floor space occupied but also reduces energy consumption, thereby effectively reducing production costs.

[0038] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the housing 1 includes a top side plate 11 and a bottom side plate 12 respectively disposed on the upper and lower sides of the screen 2. The top side plate 11, the screen 2, and the bottom side plate 12 are parallel to each other. The vibrating screening equipment also includes a support frame 4, which includes a first leg 41 and a second leg 42 respectively fixedly connected to the bottom side plate 12 of the housing 1. The first leg 41 is set higher than the second leg 42, so that the first end of the housing 1 is set higher than the second end, thereby ensuring that the feed side of both the first feeding ramp 101 and the second feeding ramp 102 is set higher than their discharge side. In this preferred embodiment, the interior of the housing 1 adopts a regular planar structure design. The housing 1 is supported by the support frame 4 in an inclined state, which not only effectively reduces the processing difficulty and manufacturing cost, but also enhances the overall rigidity and stability. Of course, the interior of the housing 1 can also directly adopt an inclined structure design, and the support frame 4 can adopt a conventional planar support, which can also make the first feeding ramp 101 and the second feeding ramp 102 inclined.

[0039] As a preferred embodiment, as shown in the appendix Figure 1 As shown, a feed cylinder 13 is provided at one end of the top side plate 11. The feed cylinder 13 is located on the same side as the feed side of the first feeding inclined surface 101, ensuring that the material flows from the feed cylinder 13 to the first feeding inclined surface 101. An adjusting plate 131 is provided inside the feed cylinder 13. The adjusting plate 131 is used to adjust the opening of the feed cylinder 13. It can not only flexibly control the feeding speed of the feed cylinder 13 through the adjusting plate 131 to prevent insufficient screening caused by excessive material feeding and ensure that the screening effect meets the process requirements, but also buffer the direct impact of the material on the screen 2 with the adjusting plate 131, reduce the wear of the screen 2, and effectively extend the service life of the screen 2.

[0040] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the adjusting plate 131 includes a rotating part 1311 rotatably mounted on the feed cylinder 13 and a locking part 1312 fixedly connected to the rotating part 1311. The locking part 1312 is provided with a positioning hole, and the cylinder wall of the feed cylinder 13 is provided with several adjusting holes. A locking pin is provided between one of the adjusting holes and the positioning hole. The locking pin constrains the relative rotation between the adjusting plate 131 and the feed cylinder 13, thereby reliably locking the position of the adjusting plate 131 after the feed cylinder 13 is adjusted to the ideal opening, preventing it from shifting or loosening on its own, ensuring the stability of the opening and feeding speed during the feeding process, which is beneficial for maintaining a continuous and uniform feeding state and improving the screening effect. Of course, the installation method of the adjusting plate 131 is not limited to this. For example, the adjusting plate 131 can be fixed by bolts.

[0041] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the vibrating screening equipment also includes a crusher 5 fixed to the housing 1, specifically fixed at one end of the housing 1 near the feed cylinder 13. The crushing section 51 of the crusher 5 extends inside the housing 1; the crushing section 51 is located between the feed cylinder 13 and the first feeding inclined surface 101, and performs impact crushing on the material falling from the feed cylinder 13 to the first feeding inclined surface 101, effectively breaking up agglomerated material blocks, reducing the risk of blockage, and thus improving screening efficiency. The crusher 5 is preferably an ultrasonic generator, but is not limited to this.

[0042] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the end of the housing 1 furthest from the feed cylinder 13 is equipped with a first discharge cylinder 14 and a second discharge cylinder 15. The first discharge cylinder 14 is located on the discharge side of the first feeding inclined plane 101 and is used to collect the oversize material; the second discharge cylinder 15 is located on the discharge side of the second feeding inclined plane 102 and is used to collect the undersize material. The first discharge cylinder 14 and the second discharge cylinder 15 are respectively connected to different feeding inclined planes to achieve material separation and directional discharge of the oversize and undersize materials, effectively avoiding material mixing after screening and ensuring the purity of the discharge. Specifically, both the first discharge cylinder 14 and the second discharge cylinder 15 are perpendicular to the bottom side plate 12 of the housing 1, so that the oversize and undersize materials can be discharged smoothly by gravity and inclined plane guidance, effectively shortening the material transfer path, reducing the risk of blockage, and improving the reliability of the equipment.

[0043] As a preferred embodiment, as shown in the appendix Figure 1 As shown, the top side plate 11 has a dustproof port at the end away from the feed cylinder 13, and the dustproof port is equipped with a filter 111 to prevent dust from escaping outside the housing 1. And / or, as shown in the attached... Figure 1As shown, the top side plate 11 is provided with at least one observation port 121 for convenient real-time observation of the material screening status of the box 1. To prevent dust from escaping, a flip-up transparent cover can be added to each observation port 121.

[0044] In a preferred embodiment, the bottom side plate 12 is connected to the support frame 4 via an elastic connector, and simultaneously directly connected to the vibrator 3. The excitation force generated by the vibrator 3 is directly transmitted to the bottom side plate 12, and amplified and optimized by the tension elastic member, causing the entire screen 2 to generate high-frequency directional vibration, thereby improving the material screening efficiency. Furthermore, while providing the necessary elastic restoring force, the tension elastic member effectively isolates the transmission of vibration to the support frame 4, reducing unnecessary energy loss and structural vibration, minimizing the impact of equipment operation on the foundation, and improving equipment stability. The elastic connector can be a common cylindrical spring, but is not limited to this.

[0045] In a preferred embodiment, a damping block can also be installed between the housing 1 and the support frame 4. The damping block can further attenuate the vibration energy transmitted from the housing 1 to the support frame 4, significantly reducing the dynamic load on the external structure, reducing the propagation of vibration to surrounding equipment, and improving the operational stability of the equipment. The damping block and the elastic connector together constitute a composite vibration reduction structure, forming multi-stage vibration reduction, which takes into account both efficient vibrating screening and overall structural protection.

[0046] As a preferred embodiment, as shown in the appendix Figure 1 As shown, one side of the housing 1 has an opening, through which the screen 2 is inserted into or removed from the housing 1. This opening provides an operational channel for the installation and removal of the screen 2, allowing for quick assembly and disassembly without disassembling the entire housing 1, significantly reducing maintenance costs. A detachable side cover 16 is installed at the opening. Closing the side cover 16 ensures the housing 1 is sealed, preventing dust from escaping during screening, maintaining stable internal pressure, avoiding material leakage and external contamination, and ensuring a clean production environment. It also facilitates the replacement of the screen 2, allowing the equipment to quickly adapt to materials of different particle sizes and improving equipment utilization. Specifically, a latch 17 is fixed to the outside of the housing 1, and the side cover 16 is locked and fixed to the opening of the housing 1 using the latch 17.

[0047] In a preferred embodiment, the side cover 16 has a first slot on the side facing the opening, and the inner wall of the box 1 on the side facing the opening has a second slot. The screen 2 includes a first frame and a second frame arranged opposite to each other. The first frame engages with the first slot, and the second frame engages with the second slot. This not only enables the screen 2 to be quickly positioned and secured, preventing the screen 2 from shifting, warping, or shaking during vibration, ensuring a stable and flat screen surface and guaranteeing screening accuracy, but also simplifies the replacement or maintenance process of the screen 2 by utilizing the snap-fit ​​design, reducing operational intensity and time costs, and facilitating rapid maintenance and screen 2 specification switching.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A vibrating screening device for positive electrode materials, characterized in that, It includes a housing (1), a screen (2) fixed inside the housing (1), and a vibrator (3) connected to the housing (1). The vibrator (3) is used to drive the housing (1) to drive the screen (2) to vibrate. The screen (2) screens up material and down material. The housing (1) is provided with a feeding chamber, which includes a first feeding inclined surface (101) formed on the screen (2) and a second feeding inclined surface (102) located below the screen (2). The feed side of both the first feeding inclined surface (101) and the second feeding inclined surface (102) is set higher than their discharge side. The first feeding inclined surface (101) is used to tilt and convey the oversize material by means of the excitation force of the screen (2), and the second feeding inclined surface (102) is used to tilt and convey the undersize material by means of the excitation force of the screen (2).

2. The vibrating screening equipment for positive electrode materials according to claim 1, characterized in that, The box body (1) includes a top side plate (11) and a bottom side plate (12) located on the upper and lower sides of the screen (2), respectively. The top side plate (11), the screen (2) and the bottom side plate (12) are parallel to each other. It also includes a support frame (4), which includes a first leg (41) and a second leg (42) that are fixedly connected to the bottom side plate (12) of the box body (1), respectively. The first leg (41) is set higher than the second leg (42).

3. The vibrating screening equipment for positive electrode materials according to claim 2, characterized in that, One end of the top side plate (11) is provided with a feed cylinder (13), and the feed cylinder (13) is located on the same side as the feed side of the first feeding inclined surface (101); the feed cylinder (13) is provided with an adjustment plate (131), and the adjustment plate (131) is used to adjust the opening of the feed cylinder (13).

4. The vibrating screening equipment for positive electrode materials according to claim 3, characterized in that, The adjusting plate (131) includes a rotating part (1311) rotatably disposed on the feed cylinder (13) and a locking part (1312) fixedly connected to the rotating part (1311); the locking part (1312) is provided with a positioning hole, and the cylinder wall of the feed cylinder (13) is provided with a plurality of adjusting holes, and a locking pin is provided between one of the adjusting holes and the positioning hole.

5. The vibrating screening equipment for positive electrode materials according to claim 3, characterized in that, It also includes a crusher (5) fixed to the housing (1), and the crushing part (51) of the crusher (5) extends into the housing (1); the crushing part (51) is located between the feed cylinder (13) and the first feeding inclined surface (101), and the crushing part (51) is used to impact crush the material flowing from the feed cylinder (13) to the first feeding inclined surface (101).

6. The vibrating screening equipment for positive electrode materials according to claim 3, characterized in that, The box body (1) has a first discharge cylinder (14) and a second discharge cylinder (15) at one end away from the feed cylinder (13). The first discharge cylinder (14) is located on the discharge side of the first feeding slope (101); the second discharge cylinder (15) is located on the discharge side of the second feeding slope (102).

7. The vibrating screening equipment for positive electrode materials according to claim 2, characterized in that, The bottom side plate (12) is connected to the support frame (4) by an elastic connector.

8. The vibrating screening equipment for positive electrode materials according to claim 3, characterized in that, The top side plate (11) is provided with a dustproof port at one end away from the feed cylinder (13), and the dustproof port is provided with a filter (111); and / or, the top side plate (11) is provided with at least one observation port (121).

9. The vibrating screening equipment for positive electrode materials according to any one of claims 1 to 8, characterized in that, The box (1) has an opening on one side, and the screen (2) is installed inside the box (1) through the opening; a side cover (16) is detachably provided at the opening.

10. The vibrating screening equipment for positive electrode materials according to claim 9, characterized in that, The side cover (16) is provided with a first slot on the side facing the opening, and the inner wall of the box (1) is provided with a second slot on the side facing the opening. The screen (2) includes a first frame and a second frame arranged opposite to each other. The first frame is engaged with the first slot, and the second frame is engaged with the second slot.

Images