Slurry dispersing device

Abstract

The application discloses a slurry dispersing device, which comprises a base plate, a first dispersing assembly, a second dispersing assembly and a lifting assembly. The first dispersing assembly comprises a first dispersing disc and an inner rod. The second dispersing assembly comprises an intermediate rod, an outer rod and a second dispersing disc. The intermediate rod and the outer rod are arranged around the inner rod. The outer rod is slidably connected with the intermediate rod along the axial direction of the inner rod and can rotate with the intermediate rod. The second dispersing disc is connected with the outer rod. The lifting assembly comprises a connecting rod and a linkage mechanism. When the connecting rod moves, the linkage mechanism links the connecting rod and the outer rod, so that the outer rod drives the second dispersing disc to move towards or away from the first dispersing disc. By arranging the lifting assembly, the outer rod drives the second dispersing disc to move up and down reciprocatingly, so that the slurry surrounded on the first dispersing disc and not participating in the dispersion is squeezed into the pot to participate in the dispersion again. The slurry at different positions is driven to realize faster dispersion and homogenization, so that the high-efficiency homogenization and super dispersion effect are achieved.

Description

Technical Field

[0001] This invention relates to the field of battery production technology, and in particular to a slurry dispersion device. Background Technology

[0002] With the rapid development and large-scale application of battery technology, the requirements for battery cycle life are becoming increasingly stringent in power, energy storage, and 3C consumer electronics applications, especially in the energy storage field, where the initial cycle life is 6000 cycles. To extend cycle life, besides formulation and design, the most crucial aspect in the production process is dispersing a high-quality slurry. The uniformity of slurry material distribution directly determines the quality of the electrodes, thus affecting the battery's electrical performance. Currently, the main slurry preparation technology on the market is dual planetary slurry preparation. The core principle of dual planetary slurry preparation is that a frame-type paddle and a dispersion disk rotate simultaneously and revolve around the central axis of the tank. Utilizing strong shear force, the agglomerates of solid particles are broken up, allowing them to be fully wetted by the liquid and uniformly and stably dispersed in the liquid, achieving a microscopic or nanoscale dispersion effect.

[0003] In the dual planetary pulping process, as the solids content increases, some pulp tends to form a coagulated portion that does not participate in the mixing process, surrounding the dispersion plate. This semi-finished pulp can even climb up the rod, increasing the load on the drive rod. In existing technologies, this semi-finished portion needs to be treated by scraping or reducing the solids content multiple times; otherwise, it can easily lead to uneven pulp dispersion, difficulties in sieving, and the presence of particles. Summary of the Invention

[0004] The purpose of this invention is to provide a slurry dispersion device that effectively improves dispersion efficiency and dispersion uniformity.

[0005] To achieve this objective, the present invention adopts the following technical solution: a slurry dispersion device, comprising a substrate, a first dispersion component, a second dispersion component, and a lifting component; the first dispersion component includes an inner rod rotatably disposed on the substrate and a first dispersion disk connected to one end of the inner rod; the second dispersion component includes a middle rod, an outer rod, and a second dispersion disk, wherein the middle rod and the outer rod are coaxially sleeved on the inner rod, the middle rod is rotatably disposed on the substrate, the outer rod is circumferentially linked to the middle rod and axially slidably connected, and the second dispersion disk is connected to the outer rod; the lifting component includes a connecting rod axially slidably disposed on the substrate and a linkage mechanism disposed between the connecting rod and the outer rod, wherein the linkage mechanism is configured such that when the connecting rod moves, it links the connecting rod and the outer rod, so that the outer rod drives the second dispersion disk to move toward or away from the first dispersion disk, while allowing the outer rod to rotate relative to the connecting rod.

[0006] Preferably, the linkage mechanism includes a first helical gear and a second helical gear. The first helical gear is mounted on the connecting rod via a second bearing and can rotate around its own axis. The second helical gear is fixedly connected to the outer rod and meshes with the first helical gear.

[0007] Preferably, the lifting assembly further includes a bracket and a lifting plate. The bracket is connected to the base plate via two guide posts. Both ends of the lifting plate are slidably connected to the two guide posts along the axial direction of the inner rod. The bracket is equipped with a driving component, and the output end of the driving component is connected to the connecting rod via the lifting plate.

[0008] Preferably, the outer rod has a guide portion at the end away from the first dispersing disk, the guide portion is arranged around the intermediate rod, one of the inner peripheral wall of the guide portion and the outer peripheral wall of the intermediate rod has a guide protrusion, and the other has a guide groove that slides with the guide protrusion.

[0009] Preferably, the guide protrusions are provided in multiple forms, which are integrally formed on the intermediate rod and spaced apart circumferentially along the intermediate rod.

[0010] Preferably, the second dispersion component further includes a sealing component for sealing the gap between the inner rod and the outer rod, as well as the gap between the inner rod and the intermediate rod.

[0011] Preferably, the sealing assembly includes a first oil seal and a second oil seal. The first oil seal is located at one end of the intermediate rod facing the first dispersion disk. The inner peripheral wall of the first oil seal abuts against the outer peripheral wall of the inner rod, and the outer peripheral wall of the first oil seal abuts against the inner peripheral wall of the intermediate rod. The second oil seal is located at one end of the outer rod facing the first dispersion disk. The inner peripheral wall of the second oil seal abuts against the outer peripheral wall of the inner rod, and the outer peripheral wall of the second oil seal abuts against the inner peripheral wall of the outer rod.

[0012] Preferably, the outer rod is connected to a cap at one end facing the first dispersion disc, and the cap is capable of limiting the second oil seal along the axial direction of the inner rod.

[0013] Preferably, the substrate is further provided with a protective cover, which covers the linkage mechanism. The protective cover has a guide hole on the side wall away from the substrate. The outer rod passes through the guide hole. The outer peripheral wall of the outer rod is provided with a third oil seal. The outer peripheral wall of the third oil seal abuts against the inner peripheral wall of the guide hole.

[0014] Preferably, an inner bearing is provided between the intermediate rod and the inner rod.

[0015] The beneficial effects of this invention are as follows: When the slurry dispersion device is working, the inner rod rotates, driving the first dispersion disc to rotate, and the middle rod rotates, driving the outer rod and the second dispersion disc to rotate. The first and second dispersion discs can each cut and disperse the slurry in their respective areas, effectively improving dispersion efficiency. By setting up a lifting component, since the second dispersion disc can rotate relative to the connecting rod, the connecting rod can reciprocate up and down while the first and second dispersion discs are working. During the lifting and lowering of the connecting rod, the linkage mechanism links the outer rod, thereby driving the outer rod to move along the middle rod. The outer rod drives the second dispersion disc to move up and down reciprocally. This not only squeezes the slurry surrounding the first dispersion disc that is not participating in dispersion into the tank to participate in dispersion again, but also plays an axial stirring role, increasing the probability of slurry particles colliding in the axial direction, and driving the slurry at different positions at the top and bottom to achieve faster dispersion and homogenization, achieving efficient homogenization and super dispersion effects, effectively improving the uniformity and fineness of slurry dispersion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the slurry dispersion device according to an embodiment of this application; Figure 2 This is an installation diagram of the linkage mechanism according to an embodiment of this application; Figure 3 This is a front view of the slurry dispersion apparatus according to an embodiment of this application; Figure 4 This is a side view of the slurry dispersion apparatus according to an embodiment of this application; Figure 5 yes Figure 4 A cross-sectional view along the AA direction; Figure 6 yes Figure 5 Enlarged view of point B in the middle; Figure 7 yes Figure 5 Enlarged view of point C in the middle; Figure 8 This is a bottom view of the slurry dispersion device according to an embodiment of this application; Figure 9 This is a comparison chart of the battery performance retention rate between the slurry dispersion device of this application embodiment and the existing stirring device in a cyclic test.

[0017] In the picture: 1. Substrate; 11. First bearing seat; 111. First bearing; 112. Second bearing; 12. Protective cover; 13. Through hole; 14. First guide sleeve; 2. First dispersing assembly; 21. Inner rod; 22. First dispersing disc; 23. First synchronous pulley; 24. Inner bearing; 3. Second dispersion assembly; 31. Intermediate rod; 311. Guide protrusion; 312. First mounting groove; 32. Outer rod; 321. Guide part; 3211. Guide groove; 322. Third oil seal; 323. Positioning platform; 324. Second mounting groove; 33. Second dispersion disc; 34. Second synchronous pulley; 35. Sealing assembly; 351. First oil seal; 352. Second oil seal; 36. End cap; 4. Lifting assembly; 41. Connecting rod; 42. Linkage mechanism; 421. First helical gear; 422. Second helical gear; 423. Second shaft seat; 424. Flat key; 43. Bracket; 431. Guide column; 432. Drive component; 44. Lifting plate; 441. Connecting piece; 442. Second guide sleeve. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] Reference Figures 1 to 8 As shown, a slurry dispersion device according to an embodiment of this application includes a substrate 1, a first dispersion component 2, a second dispersion component 3 and a lifting component 4. A first shaft seat 11 is provided on one side of the substrate 1. The substrate 1 can be rectangular or a specially made polygon. In this embodiment, the substrate 1 is set as a circle to facilitate installation into a mixing tank. A through hole 13 is provided at the center of the substrate 1. The center of the first shaft seat 11 and the through hole 13 are coaxial.

[0023] The first dispersing assembly 2 includes an inner rod 21 and a first dispersing disk 22. The inner rod 21 is rotatably connected to the first bearing 111 via a first bearing 111. One end of the inner rod 21 is located on the side of the base plate 1 away from the first bearing 11 and is detachably connected to the first dispersing disk 22. The other end passes through the first bearing 11 and is connected to a first synchronous pulley 23. The first synchronous pulley 23 is connected to an external driver via a first synchronous belt. In this embodiment, the inner rod 21 extends vertically and passes through the through hole 13. The axial direction of the inner rod 21 is the up-down direction.

[0024] The second dispersion assembly 3 includes an intermediate rod 31, an outer rod 32, and a second dispersion disk 33. Both the intermediate rod 31 and the outer rod 32 are arranged around the inner rod 21. Specifically, the intermediate rod 31 and the outer rod 32 each have a central hole. The inner rod 21 passes through the central holes of the intermediate rod 31 and the outer rod 32 in sequence, making the inner rod 21, intermediate rod 31, and outer rod 32 coaxial. The intermediate rod 31 is rotatably connected to the first bearing 11 via a second bearing 112. One end of the intermediate rod 31 passes through the first bearing 11 and is connected to a second synchronous pulley 34. The second synchronous pulley 34 is connected to another external driver via a second synchronous belt. The outer rod 32 is slidably connected to the intermediate rod 31 along the axial direction of the inner rod 21 and can rotate with the intermediate rod 31. The second dispersion disk 33 is arranged around the outer rod 32 and is detachably connected to the outer rod 32. The outer rod 32 and the intermediate rod 31 have a limiting structure that restricts the rotation of the outer rod 32 along the circumference of the intermediate rod 31. In some embodiments, the limiting structure may be a long groove opened in the inner wall of the outer rod 32 and a pin that is limited in the long groove and connected to the intermediate rod 31. In other embodiments, the limiting structure may also be a long key fixed between the outer rod 32 and the intermediate rod 31.

[0025] The lifting assembly 4 includes a connecting rod 41 and a linkage mechanism 42. The base plate 1 is provided with a first guide sleeve 14, which is located on one side of the first bearing seat 11. The connecting rod 41 is slidably connected to the base plate 1 along the axial direction of the inner rod 21 through the first guide sleeve 14. The linkage mechanism 42 is connected between the outer rod 32 and the connecting rod 41. The linkage mechanism 42 is configured such that when the connecting rod 41 moves, it links the connecting rod 41 and the outer rod 32, so that the outer rod 32 drives the second dispersing disk 33 to move toward or away from the first dispersing disk 22, while allowing the outer rod 32 to rotate relative to the connecting rod 41. In some embodiments, the linkage mechanism 42 includes a rigid bearing seat fixed to the connecting rod 41 and a bidirectional thrust bearing fixed in the bearing seat. The ring of the bidirectional thrust bearing is fixed to the outer rod 32, and the axial driving force is transmitted through the bearing seat. In other embodiments, the linkage mechanism 42 includes a rigid gear seat fixed to the connecting rod 41 and a gear bearing rotatably mounted in the gear seat. The inner ring of the gear bearing is fixed to the outer rod 32, and the axial driving force is transmitted through the gear seat.

[0026] Understandably, when the slurry dispersion device is working, the first synchronous wheel 23 drives the inner rod 21 to rotate, which in turn drives the first dispersion disk 22 to rotate. The second synchronous wheel 34 drives the middle rod 31 to rotate, which in turn drives the outer rod 32 and the second dispersion disk 33 to rotate. The first dispersion disk 22 and the second dispersion disk 33 can each cut and disperse the slurry in their respective areas, effectively improving the dispersion efficiency.

[0027] Refer to Table 1 and Figure 9 As shown, the slurry dispersion device designed above can save 1.5 hours when stirring positive electrode materials, and the slurry fineness decreases by 30%-50%, with no sieve residue. When stirring negative electrode materials, it can save more than 1.5 hours, and the slurry fineness decreases by 20%-33%, with no sieve residue. In a cycle test of over 6000 times at 45°C, the battery materials prepared using the slurry dispersion device of this application maintain a higher performance retention rate throughout the test than the battery materials prepared using a traditional double planetary mixer, exhibiting superior battery performance.

[0028] Table 1: Comparison of Pulping Methods By setting up the lifting component 4, since the second dispersing disk 33 can rotate relative to the connecting rod 41, while the first dispersing disk 22 and the second dispersing disk 33 are working, the connecting rod 41 can reciprocate up and down without affecting the second dispersing disk 33. During the lifting and lowering process of the connecting rod 41, the linkage mechanism 42 links the outer rod 32, thereby driving the outer rod 32 to move along the middle rod 31. The outer rod 32 drives the second dispersing disk 33 to move up and down reciprocally. This not only squeezes the slurry surrounding the first dispersing disk 22 that does not participate in the dispersion into the tank to participate in the dispersion, but also plays an axial stirring role, increasing the probability of slurry particles colliding in the axial direction, and driving the slurry at different positions at the top and bottom to achieve faster dispersion and homogenization, achieving efficient homogenization and super dispersion effects, and effectively improving the dispersion uniformity and fineness of the slurry.

[0029] Reference Figure 2 As shown, it can be understood that the linkage mechanism 42 includes a first helical gear 421 and a second helical gear 422. The first helical gear 421 is connected to the second shaft seat 423 via a flat key 424. The second shaft seat 423 is rotatably connected to the connecting rod 41. The second helical gear 422 is fixedly connected to the outer rod 32 via another flat key 424 and meshes with the first helical gear 421. The second helical gear 422 is axially positioned by the positioning platform 323 on the side wall of the outer rod 32.

[0030] When the connecting rod 41 rises and falls, the first helical gear 421 moves up and down under the drive of the second shaft seat 423. The helical teeth of the first helical gear 421 act as a spiral track, driving the second helical gear 422 to rotate and reciprocate, realizing the linkage between the rising and falling of the connecting rod 41 and the outer rod 32. In addition, when the second synchronous belt drives the intermediate rod 31 to rotate the outer rod 32, the first helical gear 421 can absorb the rotation of the outer rod 32, making the outer rod 32 rotate independently of the connecting rod 41, ensuring the stability of the second dispersing disk 33. Setting the linkage mechanism 42 as a meshing first helical gear 421 and second helical gear 422 simplifies the structure of the linkage mechanism 42, facilitates the assembly and operation of the linkage mechanism 42, and allows the first helical gear 421 and second helical gear 422 to be directly selected as standard parts, reducing the design and use cost of the dispersing device.

[0031] Reference Figure 3 and Figure 4(The protective cover 12 structure has been omitted.) As shown, the lifting assembly 4 also includes a bracket 43 and a lifting plate 44. The bracket 43 is connected to the base plate 1 via two guide posts 431. The guide posts 431 are arranged vertically and are located on the same side of the base plate 1 as the first shaft seat 11. The two ends of the lifting plate 44 are slidably connected to the two guide posts 431 along the axial direction of the inner rod 21 via second guide sleeves. The bracket 43 is equipped with a drive component 432, and the lifting plate 44 is provided with a connecting piece 441. The output end of the drive component 432 is connected to the connecting piece 441, and the end of the connecting rod 41 is connected to the lifting plate 44. Optionally, in this embodiment, the drive component 432 is a servo-driven electric cylinder. In other embodiments, the drive component 432 can be a pneumatic cylinder or a lead screw lifting component.

[0032] By setting up a lifting plate 44 to connect the driving component 432 and the connecting rod 41, the guide column 431 of the bracket 43 guides the lifting plate 44 to move linearly, converting the lifting of the driving component 432 into the lifting of the connecting rod 41, effectively improving the movement stability of the connecting rod 41.

[0033] Reference Figure 2 and Figure 5 As shown, it can be understood that the outer rod 32 is provided with a guide portion 321 at the end away from the first dispersing disk 22. The guide portion 321 extends along the axial direction of the outer rod 32 and is arranged around the intermediate rod 31. One of the inner peripheral wall of the guide portion 321 and the outer peripheral wall of the intermediate rod 31 is provided with a guide protrusion 311. The guide protrusion 311 extends along the axial direction of the intermediate rod 31, and the other is provided with a guide groove 3211 that slides with the guide protrusion 311.

[0034] By setting mutually cooperating guide protrusions 311 and guide grooves 3211, the guide part 321 moves up and down along the intermediate rod 31 under the guidance of the guide groove 3211. The guide protrusions 311 can restrict the rotation of the guide part 321, thereby ensuring that the torque of the second synchronous wheel 34 can be stably transmitted to the outer rod 32, improving the rotational stability of the second dispersion disc 33. Furthermore, the guide protrusions 311 and guide grooves 3211 are directly set on the inner peripheral wall of the outer rod 32 and the outer peripheral wall of the intermediate rod 31, which can eliminate the need for additional limiting structures and facilitate assembly and use.

[0035] Reference Figure 2 As shown, it can be understood that there are multiple guide protrusions 311, and the sidewalls of the guide protrusions 311 are arc-shaped. Multiple guide protrusions 311 are integrally formed on the intermediate rod 31 and are spaced apart along the circumference of the intermediate rod 31. The inner circumferential wall of the outer rod 32 is provided with guide grooves 3211 that correspond one-to-one with the guide protrusions 311.

[0036] By setting multiple guide protrusions 311 and guide grooves 3211, on the one hand, the multiple guide protrusions 311 can evenly distribute the torque and improve the connection stability between the outer rod 32 and the intermediate rod 31; on the other hand, the guide protrusions 311 are arc-shaped and slide in cooperation with the guide grooves 3211, which can reduce the contact area, reduce sliding friction, and improve the smoothness of the movement of the outer rod 32.

[0037] Reference Figure 5 As shown, it can be understood that the second dispersion component 3 also includes a sealing component 35 for sealing the gaps between the inner rod 21 and the outer rod 32, as well as the gaps between the inner rod 21 and the intermediate rod 31. In some embodiments, the sealing structure includes a labyrinth formed by a plurality of annular convex and concave structures disposed between the inner rod 21 and the intermediate rod 31, and between the inner rod 21 and the outer rod 32. In other embodiments, the sealing structure includes a specially designed plug seal.

[0038] By setting the sealing component 35, the sealing component 35 can fill the gap between the inner rod 21 and the intermediate rod 31 and the gap between the inner rod 21 and the outer rod 32, and isolate the slurry when the outer rod 32 moves up and down, effectively extending the service life of the first dispersion component 2 and the second dispersion component 3.

[0039] Reference Figure 6 and Figure 7 As shown, it can be understood that the sealing assembly 35 includes a first oil seal 351 and a second oil seal 352. The first oil seal 351 is located in a first mounting groove 312 at one end of the intermediate rod 31 facing the first dispersing disk 22. The inner peripheral wall of the first oil seal 351 abuts against the outer peripheral wall of the inner rod 21, and the outer peripheral wall of the first oil seal 351 abuts against the inner peripheral wall of the intermediate rod 31 (i.e., the side wall of the first mounting groove 312). The second oil seal 352 is located in a second mounting groove 324 at one end of the outer rod 32 facing the first dispersing disk 22. The inner peripheral wall of the second oil seal 352 abuts against the outer peripheral wall of the inner rod 21, and the outer peripheral wall of the second oil seal 352 abuts against the inner peripheral wall of the outer rod 32.

[0040] By setting a first oil seal 351 and a second oil seal 352, the first oil seal 351 seals the inner rod 21 and the intermediate rod 31 in an independent first mounting groove 312, and the second oil seal 352 seals the inner rod 21 and the outer rod 32 in an independent second mounting groove 324. This simplifies the structure of the sealing assembly 35, facilitates selection, and saves costs while ensuring reliable sealing. Furthermore, the first oil seal 351 and the second oil seal 352 can be specially designed with lips according to the rotating inner rod 21 and the outer rod 32. When the inner rod 21 and the outer rod 32 rotate independently, a thin oil film formed by their rotation achieves dynamic sealing, reducing friction and wear on the inner rod 21 and the outer rod 32.

[0041] Reference Figure 5 and Figure 7 As shown, it can be understood that a detachable end cap 36 is connected to the end of the outer rod 32 facing the first dispersion disc 22. The end cap 36 is interference-fitted with the second dispersion disc 33 and connected by a pin. The end cap 36 is designed around the inner rod 21, and the second dispersion disc 33 is sleeved on the side wall of the outer rod 32. The end cap 36 can limit the second dispersion disc 33 and the second oil seal 352 along the axial direction of the inner rod 21.

[0042] By setting the end cap 36, during normal use of the dispersion device, the end cap 36 cooperates with the bottom wall of the second mounting groove 324 to axially lock the second oil seal 352, effectively improving the installation stability of the second oil seal 352 without affecting the up-and-down movement of the outer rod 32. In addition, users can easily maintain and replace the second dispersion disc 33 and the second oil seal 352 by disassembling the end cap 36 later, reducing the later maintenance cost of the second dispersion component 3.

[0043] Preferably, the outer peripheral wall of the end cap 36 is a tapered shape that gradually decreases in diameter along the outer diameter of the inner rod 21 toward the first dispersion disk 22. The tapered outer wall of the end cap 36 can effectively reduce the resistance when the outer rod 32 moves up and down and improve the smoothness of the movement of the outer rod 32.

[0044] Reference Figure 1 and Figure 8 As shown, it can be understood that the substrate 1 is also provided with a protective cover 12, which covers the linkage mechanism 42. The protective cover 12 has a guide hole on the side wall away from the substrate 1. The depth direction of the guide hole is the axial direction of the inner rod 21. The outer rod 32 passes through the guide hole. The outer peripheral wall of the outer rod 32 is provided with a third oil seal 322. The outer peripheral wall of the third oil seal 322 abuts against the inner peripheral wall of the guide hole.

[0045] By setting up a protective cover 12 and a third oil seal 322, the entire linkage mechanism 42 and the internal environment of the mixing tank are isolated, preventing slurry from entering between the first helical gear 421 and the second helical gear 422 or into the second bearing 423. At the same time, it prevents slurry from splashing into precision components such as the second bearing 112, effectively extending the service life of the linkage mechanism 42.

[0046] Reference Figure 6 As shown, it can be understood that an inner bearing 24 is provided between the intermediate rod 31 and the inner rod 21. The inner ring of the inner bearing 24 is connected to the inner rod 21, and the outer ring of the inner bearing 24 is connected to the intermediate rod 31.

[0047] By setting an inner bearing 24, which serves as a connection structure between the inner rod 21 and the intermediate rod 31, which can rotate independently, the inner rod 21 can be provided with precise radial support, enabling it to rotate stably without rubbing against the inner wall of the intermediate rod 31 or getting stuck due to its own weight, external load, or machining errors. This maintains the coaxiality and stable radial clearance between the inner rod 21 and the intermediate rod 31, further improving the rotational stability of the inner rod 21 and the intermediate rod 31.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A slurry dispersion device, characterized in that, include: base(1); The first dispersion component (2) includes an inner rod (21) rotatably disposed on the substrate (1) and a first dispersion disk (22) connected to one end of the inner rod (21); The second dispersion component (3) includes an intermediate rod (31), an outer rod (32), and a second dispersion disk (33). The intermediate rod (31) and the outer rod (32) are coaxially sleeved on the inner rod (21). The intermediate rod (31) is rotatably disposed on the substrate (1). The outer rod (32) is circumferentially linked to the intermediate rod (31) and axially slidably connected. The second dispersion disk (33) is connected to the outer rod (32). The lifting assembly (4) includes a connecting rod (41) axially slidably disposed on the base plate (1) and a linkage mechanism (42) disposed between the connecting rod (41) and the outer rod (32). The linkage mechanism (42) is configured such that when the connecting rod (41) moves, it links the connecting rod (41) and the outer rod (32) so that the outer rod (32) drives the second dispersing disk (33) to move toward or away from the first dispersing disk (22), while allowing the outer rod (32) to rotate relative to the connecting rod (41).

2. The slurry dispersion device according to claim 1, characterized in that, The linkage mechanism (42) includes a first helical gear (421) and a second helical gear (422). The first helical gear (421) is mounted on the connecting rod (41) through a second bearing (423), and the first helical gear (421) can rotate around its own axis. The second helical gear (422) is fixedly connected to the outer rod (32) and meshes with the first helical gear (421).

3. The slurry dispersion device according to claim 1 or 2, characterized in that, The lifting assembly (4) further includes a bracket (43) and a lifting plate (44). The bracket (43) is connected to the base plate (1) through two guide posts (431). The two ends of the lifting plate (44) are slidably connected to the two guide posts (431) along the axial direction of the inner rod (21). The bracket (43) is equipped with a driving component (432). The output end of the driving component (432) is connected to the connecting rod (41) through the lifting plate (44).

4. The slurry dispersion device according to claim 1, characterized in that, The outer rod (32) has a guide portion (321) at one end away from the first dispersion disk (22). The guide portion (321) is arranged around the middle rod (31). One of the inner peripheral wall of the guide portion (321) and the outer peripheral wall of the middle rod (31) is provided with a guide protrusion (311), and the other is provided with a guide groove (3211) that slides with the guide protrusion (311).

5. The slurry dispersion device according to claim 4, characterized in that, The guide protrusions (311) are provided in multiple ways. The multiple guide protrusions (311) are integrally formed on the intermediate rod (31) and are spaced apart along the circumference of the intermediate rod (31).

6. The slurry dispersion device according to claim 1, characterized in that, The second dispersion component (3) further includes a sealing component (35) for sealing the gap between the inner rod (21) and the outer rod (32) and the gap between the inner rod (21) and the intermediate rod (31).

7. The slurry dispersion device according to claim 6, characterized in that, The sealing assembly (35) includes a first oil seal (351) and a second oil seal (352). The first oil seal (351) is located at one end of the intermediate rod (31) facing the first dispersion disk (22). The inner peripheral wall of the first oil seal (351) abuts against the outer peripheral wall of the inner rod (21), and the outer peripheral wall of the first oil seal (351) abuts against the inner peripheral wall of the intermediate rod (31). The second oil seal (352) is located at one end of the outer rod (32) facing the first dispersion disk (22). The inner peripheral wall of the second oil seal (352) abuts against the outer peripheral wall of the inner rod (21), and the outer peripheral wall of the second oil seal (352) abuts against the inner peripheral wall of the outer rod (32).

8. The slurry dispersion device according to claim 7, characterized in that, The outer rod (32) is connected to a head (36) at one end facing the first dispersion disc (22), and the head (36) can limit the second oil seal (352) along the axial direction of the inner rod (21).

9. The slurry dispersion device according to claim 1, characterized in that, The substrate (1) is also provided with a protective cover (12), which covers the linkage mechanism (42). The protective cover (12) has a guide hole on the side wall away from the substrate (1). The outer rod (32) passes through the guide hole. The outer peripheral wall of the outer rod (32) is provided with a third oil seal (322). The outer peripheral wall of the third oil seal (322) abuts against the inner peripheral wall of the guide hole.

10. The slurry dispersion device according to claim 1, characterized in that, The intermediate rod (31) and the inner rod (21) are provided with an inner bearing (24).

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