Negative electrode material fine screening device

Abstract

The utility model provides a cathode material fine screening device, which relates to the technical field of screening devices and comprises a screen body and a vibration motor, the inside of the screen body is hollow, the screen body is sequentially provided with an upper frame, a middle frame and a lower frame from top to bottom, a first screen mesh is arranged between the upper frame and the middle frame, and a second screen mesh is arranged between the middle frame and the lower frame. Discharging ports are formed in the outer side wall of the upper frame, the outer side wall of the middle frame and the outer side wall of the lower frame respectively, the upper frame is covered with a sealing cover, the sealing cover is provided with a feeding port, the lower frame is connected with a vibrating body, and the two ends of a motor shaft of the vibrating motor are connected with an upper face plate and a lower face plate respectively. The upper disc chuck and the lower disc chuck are both provided with eccentric blocks, and a crankshaft of the vibration motor is fixedly connected with the vibration body. According to the utility model, multi-layer screening can be carried out to obtain materials with different particle sizes, so that fine screening is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a fine screening device for negative electrode materials. Background Art

[0002] The rotary vibrating screen device is a high-precision fine particle screening machine, which is particularly suitable for the classification of fine particles and micro powders. The rotary vibrating screen can be used for dry, wet and various geometric particle screening operations. The rotary vibrating screen is a fully enclosed structure with no dust spillage. It is widely used in the dry and wet screening of materials and the separation and recovery of solids in liquids in the mining, building materials, metallurgy, casting, abrasives, cement, chemicals, medicine, light industry, glass and coatings industries. It can also be used for wastewater screening and recovery operations.

[0003] However, the traditional rotary vibrating screen devices currently on the domestic market not only have high operating noise and poor screening effect, but also have complex structures, large sizes, heavy weights, large installation sites, and are difficult to transport and install. Utility Model Content

[0004] In view of the problem that the screening effect in the prior art is not good, the utility model provides a negative electrode material fine screening device, which can perform multi-layer screening to obtain materials of different particle sizes, thereby achieving fine screening.

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

[0006] A negative electrode material fine screening device, comprising:

[0007] A sieve body, which is hollow inside, is provided with an upper frame, a middle frame and a lower frame from top to bottom in sequence, a first screen is provided between the upper frame and the middle frame, a second screen is provided between the middle frame and the lower frame, the mesh number of the second screen is greater than the mesh number of the first screen, the outer wall of the upper frame, the outer wall of the middle frame and the outer wall of the lower frame are all provided with a discharge port, the upper frame cover is provided with a sealing cover, the sealing cover has a feed port, and the lower frame is connected with a vibrating body;

[0008] The two ends of the vibration motor's shaft are respectively connected with an upper faceplate and a lower faceplate, the upper faceplate and the lower faceplate are both provided with eccentric blocks, and the shaft of the vibration motor is fixedly connected with the vibration body.

[0009] The negative electrode material fine screening device as described above further includes a restraining ring, wherein the outer wall of the connection between the upper frame and the middle frame is sleeved with the restraining ring, the outer wall of the connection between the middle frame and the lower frame is sleeved with the restraining ring, and the connection between the lower frame and the vibrating body is sleeved with the restraining ring.

[0010] As the negative electrode material fine screening device described above, further, the first sieve and the second sieve are connected to the sieve body through a grid frame, an intermediate pressure plate is provided in the middle of the first sieve and the middle of the second sieve, and the first sieve and the second sieve near the grid frame are provided with an outer pressure plate.

[0011] The negative electrode material fine screening device as described above further includes a base, the vibration motor is arranged on the base, and a shock-absorbing spring is arranged between the vibration body and the base.

[0012] As described above, the negative electrode material fine screening device further comprises a return material tray in the middle frame, the return material tray has a tray body that is concave from the outside to the inside, and the return material tray is located below the first screen.

[0013] As described above, the negative electrode material fine screening device, further, a sealing head is also provided in the lower frame, the sealing head protrudes from the outside to the inside, and the sealing head is located below the second screen.

[0014] As described above, the negative electrode material fine screening device, further, a screen support rod is connected through the middle of the first screen, and the bottom end of the screen support rod is connected to the return material tray.

[0015] As described above, in the negative electrode material fine screening device, further, a screen support rod is connected through the middle of the second screen, and the bottom end of the screen support rod is connected to the head.

[0016] The negative electrode material fine screening device as described above, further, the mesh number range of the first sieve is 300-350 meshes, and the mesh number range of the second sieve is 350-400 meshes.

[0017] The negative electrode material fine screening device as described above, further, the vibration motor is a double-flange vibration motor.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model has multi-stage screening, good screening effect and high fineness;

[0020] 2. The utility model has a simple structure and low noise during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the screening device according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the vibration motor (upper faceplate and lower faceplate) of the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the frame in the embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the lower frame of the embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the screen installation of the embodiment of the utility model;

[0027] In the figure: 1. upper frame; 2. middle frame; 3. lower frame; 4. first screen; 5. second screen; 6. discharge port; 7. sealing cover; 8. feed port; 9. vibrating body; 10. vibration motor; 11. upper faceplate; 12. lower faceplate; 13. eccentric block; 14. clamping ring; 15. grid; 16. middle pressure plate; 17. outer pressure plate; 18. base; 19. shock-absorbing spring; 20. return tray; 21. head; 22. screen support rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] Example:

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" in the embodiments of the utility model and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The utility model provides a technical solution: a negative electrode material fine screening device, comprising a screen body and a vibration motor 10, the interior of the screen body is hollow, and the screen body is sequentially provided with an upper frame 1, a middle frame 2 and a lower frame 3 from top to bottom, a first screen 4 is provided between the upper frame and the middle frame 2, a second screen 5 is provided between the middle frame 2 and the lower frame 3, the mesh number of the second screen 5 is greater than the mesh number of the first screen 4, the outer wall of the upper frame 1, the outer wall of the middle frame 2, and the outer wall of the lower frame 3 are all provided with a discharge port 6, the upper frame 1 is covered with a sealing cover 7, the sealing cover 7 has a feed port 8, the lower frame 3 is connected with a vibrating body 9, the two ends of the machine shaft of the vibration motor 10 are respectively connected with an upper faceplate 11 and a lower faceplate 12, the upper faceplate 11 and the lower faceplate 12 are both provided with an eccentric block 13, and the machine shaft of the vibration motor 10 is fixedly connected to the vibrating body 9.

[0035] For details, see Figure 1The present screening device is mainly suitable for fine screening of negative electrode materials (graphite powder) of new energy lithium batteries. Compared with the traditional screening device, the screening body of the present screening device has three screening frames, namely, an upper frame 1, a middle frame 2 and a lower frame 3. A discharge port 6 is installed on the outer side of each frame. A vibrating body 9 is installed at the bottom of the lower frame 3. The vibrating body 9 is fixedly connected to the shaft of a vibration motor 10. The shaft of the vibration motor 10 has an upper faceplate 11 and a lower faceplate 12. The upper faceplate 11 and the lower faceplate 12 are unbalanced due to the different phase angles of the eccentric block 13 (see Figure 2 ), the upper cover of the upper frame 1 is provided with a sealing cover 7; when the graphite powder needs to be screened, the graphite powder enters from the feed port 8 of the sealing cover 7, and then the upper faceplate 11 and the lower faceplate 12 are driven to move by the rotation of the shaft of the vibration motor 10, and the rotational motion is converted into three horizontal, vertical and inclined motions, and finally the motion is transmitted to the upper frame 1, the middle frame 2 and the lower frame 3 through the vibrating body 9, so that the graphite powder makes an outward expansion involute motion on the first sieve 4 and the second sieve 5, and then the graphite powder is screened three times by the upper frame 1, the middle frame 2 and the lower frame 3, and the overall screening effect is good. The setting of the double sieves (the first sieve 4 and the second sieve 5) also further improves the fine screening degree of the graphite powder.

[0036] As an optional implementation, in some embodiments, a restraining ring 14 is further included, and the outer wall of the connection between the upper frame 1 and the middle frame 2 is provided with a restraining ring 14, the outer wall of the connection between the middle frame 2 and the lower frame 3 is provided with a restraining ring 14, and the connection between the lower frame 3 and the vibrating body 9 is provided with a restraining ring 14. Among them, the restraining ring 14 has radial rigidity and anti-twisting performance. In the face of frequent vibrations, installing the restraining ring 14 can improve the stability and safety of the overall structure.

[0037] As an optional implementation, in some embodiments, the first screen 4 and the second screen 5 are connected to the screen body through a frame 15, an intermediate pressure plate 16 is provided in the middle of the first screen 4 and the middle of the second screen 5, and an outer pressure plate 17 is provided on the first screen 4 and the second screen 5 near the frame.

[0038] For details, see Figure 5 The grid frame 15 has the advantages of light weight, high rigidity and good shock resistance, and is more suitable for use in a screening device; the intermediate pressing plate 16 and the outer pressing plate 17 can increase the rigidity of the first screen 4 and the second screen 5 (the screen can be effectively fixed on the frame, so that the screen is not easily deformed, thereby improving the rigidity of the screen), keep the first screen 4 and the second screen 5 flat (the screen can be kept flat to avoid wrinkles or depressions on the screen, thereby ensuring the filtering effect of the screen), and improve the screening efficiency (the screen can be made to fit more closely on the frame, reducing the gap between the screen and the frame, thereby reducing the material staying in the gap and improving the screening efficiency).

[0039] As an optional implementation, in some embodiments, a base 18 is further included, the vibration motor 10 is arranged on the base 18, and a shock-absorbing spring 19 is arranged between the vibrating body 9 and the base 18. Among them, the present screening device can be fixed by different fixing components according to the needs, for example, the screening device is suspended by a suspension arm or the screening device is placed on the base. Preferably, the screening device is fixed by the base 18, and a shock-absorbing spring 19 is installed between the vibrating bodies 9 of the base 18. In this way, on the one hand, the vibration of the screening device on the base 18 can be reduced, and the screening device can be prevented from vibrating too much and detaching from the base 18, thereby improving the overall stability, and on the other hand, the operating noise can be reduced.

[0040] As an optional implementation, in some embodiments, a return material tray 20 is further provided in the middle frame 2, the plate body of the return material tray 20 is concave from the outside to the inside, and the return material tray 20 is located below the first screen 4. The return material tray 20 can concentrate the stone mill powder screened by the upper frame 1 to the middle of the plate body for full screening, further improving the screening effect.

[0041] In the above embodiment, further, a screen support rod 22 is connected through the middle of the first screen 4, and the bottom end of the screen support rod 22 is connected to the return material tray 20. Figure 3 The screen support rod 22 can support and fix the first screen 4, ensuring the stability and flatness of the first screen 4, thereby ensuring the smooth progress of the screening or filtering process.

[0042] As an optional implementation, in some embodiments, a head 21 is further provided in the lower frame 3, the head 21 protrudes from the outside to the inside, and the head 21 is below the second screen 5. Among them, the lower frame 3 is additionally equipped with a head 21 to seal the bottom of the sieve body, ensuring that the graphite powder in the lower frame 3 will not leak from the bottom, thereby improving the sealing performance of the screening device.

[0043] In the above embodiment, further, a screen support rod 22 is connected through the middle of the second screen 5, and the bottom end of the screen support rod 22 is connected to the head 21. Figure 4 The screen support rod 22 can support and fix the second screen 5, ensuring the stability and flatness of the second screen 5, thereby ensuring the smooth progress of the screening or filtering process.

[0044] As an optional implementation, in some embodiments, the mesh number of the first sieve 4 is in the range of 300-350 meshes, and the mesh number of the second sieve 5 is in the range of 350-400 meshes. The mesh numbers of the first sieve 4 and the second sieve 5 can be adjusted according to actual screening requirements. Preferably, the mesh number of the first sieve 4 is 300, and the mesh number of the second sieve 5 is 400, so that a fine screening effect can be achieved.

[0045] As an optional implementation, in some embodiments, the vibration motor 10 is a double-flange vibration motor. The double-flange vibration motor has high efficiency (high vibration efficiency and strong vibration force), is easy to maintain (simplified and clear design makes maintenance and maintenance relatively easy), and uses advanced control technology and high-quality components to ensure that it maintains stable performance during long-term operation, and uses high-quality materials and advanced manufacturing processes, and has high durability.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations 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 any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. A negative electrode material fine screening device, characterized in that: include: A sieve body, which is hollow inside, is provided with an upper frame, a middle frame and a lower frame from top to bottom in sequence, a first screen is provided between the upper frame and the middle frame, a second screen is provided between the middle frame and the lower frame, the mesh number of the second screen is greater than the mesh number of the first screen, the outer wall of the upper frame, the outer wall of the middle frame and the outer wall of the lower frame are all provided with a discharge port, the upper frame cover is provided with a sealing cover, the sealing cover has a feed port, and the lower frame is connected with a vibrating body; The two ends of the vibration motor's shaft are respectively connected with an upper faceplate and a lower faceplate, the upper faceplate and the lower faceplate are both provided with eccentric blocks, and the shaft of the vibration motor is fixedly connected with the vibration body.

2. The negative electrode material fine screening device according to claim 1, characterized in that: It also includes a restraining ring, which is sleeved on the outer wall of the connection between the upper frame and the middle frame, the outer wall of the connection between the middle frame and the lower frame, and the connection between the lower frame and the vibrating body.

3. The negative electrode material fine screening device according to claim 1, characterized in that: The first screen and the second screen are connected to the screen body through a mesh frame, an intermediate pressure plate is provided in the middle of the first screen and the middle of the second screen, and an outer pressure plate is provided in the first screen and the second screen near the mesh frame.

4. The negative electrode material fine screening device according to claim 1, characterized in that: It also includes a base, the vibration motor is arranged on the base, and a shock-absorbing spring is arranged between the vibration body and the base.

5. The negative electrode material fine screening device according to claim 1, characterized in that: A return material tray is also provided in the middle frame, the tray body of the return material tray is concave from the outside to the inside, and the return material tray is located below the first screen.

6. The negative electrode material fine screening device according to claim 1, characterized in that: A sealing head is also arranged in the lower frame, the sealing head protrudes from the outside to the inside, and the sealing head is located below the second screen.

7. The negative electrode material fine screening device according to claim 5, characterized in that: A screen support rod is connected through the middle of the first screen, and the bottom end of the screen support rod is connected to the return material tray.

8. The negative electrode material fine screening device according to claim 6, characterized in that: A screen support rod is connected through the middle of the second screen, and the bottom end of the screen support rod is connected to the head.

9. The negative electrode material fine screening device according to claim 1, characterized in that: The mesh number of the first sieve is in the range of 300 to 350 meshes, and the mesh number of the second sieve is in the range of 350 to 400 meshes.

10. The negative electrode material fine screening device according to claim 1, characterized in that: The vibration motor is a double-flange vibration motor.

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