A crusher ceramic roller shaft end sealing device and a crusher

Abstract

The application discloses a crusher ceramic roller shaft end sealing device and a crusher, and relates to the technical field of sealing devices, in particular to a sealing device for a crusher ceramic roller shaft end. The device comprises a mounting piece made of cast nylon after heat treatment; a baffle made of polyether ether ketone material, wherein the baffle is provided with a step, a sealing groove is formed in the step, and a sealing strip is arranged in the sealing groove; the baffle is sleeved outside the mounting piece, so that the outer side of the mounting piece is movably connected with the sealing strip; a reinforcing piece is arranged on the baffle and connected with the step and axially perpendicular to the sealing groove; a sealing piece made of polytetrafluoroethylene material is sleeved outside the mounting piece and located on the step; a pressing piece is arranged on the sealing piece, and the edge of the pressing piece is connected with the step through a fastener. The sealing device effectively prevents the generation of magnetic foreign matters and avoids the pollution of lithium battery positive materials; in addition, the sealing piece made of plastic material has excellent self-lubricating property, the problem of easy wear is avoided, the service life is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of roller crushers, specifically relating to a ceramic roller shaft end sealing device for a crusher and a crusher. Background Technology

[0002] Currently, in the field of lithium battery cathode material production, the ceramic roller sealing device on sintering material crushing equipment is often an assembly structure with a black PTFE coating sprayed onto the metal surface (a 200µm thick plastic protective layer is coated on the surface of the metal parts). This assembly structure has many technical defects in conveying battery cathode materials, mainly the following problems: First, the ceramic roller sealing device is subjected to friction and oxidation corrosion by the hard, high-temperature battery cathode material, which over time will damage the surface coating structure (PTFE layer). Damage to the coating structure will cause wear of structural components such as bushings, sealing plates, and sealing rings, generating metallic magnetic foreign objects. These metallic magnetic foreign objects will flow into the lithium battery cathode material as the roller rotates, seriously affecting the performance and quality of the lithium battery cathode material. Finally, the existing sealing device's metal bushings, sealing plates, and V-shaped sealing rings are prone to wear, deformation, corrosion, and loosening during rotation, resulting in poor sealing effect and short service life of parts. Frequent disassembly of the sealing device and replacement of parts are required, which is costly. Summary of the Invention

[0003] This invention provides a ceramic roller end sealing device for a crusher and a crusher. On the one hand, it solves the problem that the coating of the sealing device is contaminated by friction and oxidation during use, which leads to the contamination of the positive electrode material of the lithium battery. On the other hand, it solves the technical defects of easy wear and deformation of the sealing device parts.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] In a first aspect, a ceramic roller shaft end sealing device for a crusher is provided, comprising:

[0006] The mounting components are made of heat-treated cast nylon.

[0007] The baffle is made of polyetheretherketone material. The baffle has a step, and a sealing groove is formed on the step. A sealing strip is provided in the sealing groove.

[0008] The baffle is sleeved on the outside of the mounting component so that the outside of the mounting component is movably connected to the sealing strip.

[0009] A reinforcing member is provided on the baffle, connected to the step, and perpendicular to the axial direction of the sealing groove;

[0010] The seal is made of polytetrafluoroethylene and is fitted onto the outside of the mounting piece, located on the step;

[0011] A clamping element is disposed on the sealing element, and the edge of the clamping element is connected to the step by a fastener.

[0012] Furthermore, the step is located in the middle of the baffle, one end of the mounting member is tightly attached to the bottom of the baffle, and the other end extends outward through the sealing groove and is located above the clamping member.

[0013] Furthermore, the mounting component is a bushing with a wall thickness of 7.5 mm.

[0014] Furthermore, the sealing groove is an annular structure, the outer side of the sealing strip is bonded to the inner side of the sealing groove, the inner side of the sealing strip is movably connected to the outer side of the mounting component, and the inner diameter of the sealing strip is 0.2mm smaller than the inner diameter of the sealing groove.

[0015] Furthermore, one end of the reinforcing member is connected to the step and is flush with the end face of the step.

[0016] Furthermore, a blind hole is provided at the top of the step, and the blind hole is arranged around the circumference of the sealing groove axis;

[0017] The edge of the clamping member is provided with a plurality of clamping holes, and the blind holes are fixedly connected to the clamping holes by fasteners.

[0018] Furthermore, the fastener is a screw.

[0019] Furthermore, the clamping component is machined from stainless steel.

[0020] Furthermore, the clamping element has a ring-shaped structure.

[0021] Secondly, a crusher is provided, wherein a roller shaft is provided on the end of the roller shaft, and a sealing device as described above is provided.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Because the mounting components, baffles, and seals of this sealing device are made of non-metallic materials, after being assembled with the stainless steel clamping components, they can effectively prevent the generation of magnetic foreign objects when they come into contact with the positive electrode material of the lithium battery as they rotate with the roller, thus avoiding contamination of the positive electrode material of the lithium battery. Secondly, the plastic seals have excellent self-lubricating properties, avoiding the problem of easy wear, improving the service life of the mounting components and baffles, and reducing production costs.

[0024] 2. The addition of steps increases the overall strength of the baffle.

[0025] 3. The bushing has a wall thickness of 7.5mm, which ensures the strength of the bushing while improving its wear resistance and reducing the assembly stress between the bushing and the roller.

[0026] 4. The installation of plastic seals improves the corrosion resistance and wear resistance of the bushing and baffle.

[0027] 5. The reinforcing components are fitted with the steps to further enhance the strength of the baffle. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the operation of a sealing device and roller shaft in the prior art;

[0030] Figure 2 This is a schematic diagram of the assembly of a sealing device in the prior art;

[0031] Figure 3 This is an exploded view of a sealing device using existing technology;

[0032] Figure 4 This is an exploded view of the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0033] Figure 5 This is a schematic diagram of the mounting components in the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0034] Figure 6 This is a schematic diagram of the baffle structure in the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0035] Figure 7 This is a schematic diagram of the assembly structure of the mounting parts and baffle in the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0036] Figure 8 This is a schematic diagram of the sealing component structure in the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0037] Figure 9 This is a schematic diagram of the pressing component structure in the ceramic roller shaft end sealing device for a crusher provided by the present invention;

[0038] The components include: 1. Existing sealing device; 101. Non-metallic plate; 102. Metal shell; 1021. Frustum; 103. V-shaped sealing ring; 104. Pressure ring; 2. Stationary roller; 3. Moving roller; 4. Lithium battery positive electrode material; 5. Sealing device; 501. Mounting component; 502. Baffle; 5020. Blind hole; 5021. Step; 5022. Reinforcing component; 5023. Sealing strip; 503. Sealing component; 504. Pressing component; 5041. Pressing hole; 505. Fastener. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, 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, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0045] like Figure 3 The diagram shown is a schematic representation of a sealing device in the prior art. Figure 3 As can be seen, the non-metallic plate 101 and the metal shell 102 are coaxially mounted on the roller shaft, while the V-shaped sealing ring 103 is mounted inside the frustum 1021, and the pressure ring 104 is mounted on the top of the frustum 1021; Figure 1 and Figure 2 As shown, after the existing sealing device is assembled and installed on the roller, the lithium battery positive electrode material 4 moves towards the stationary roller 2 under the rotation of the stationary roller 2 and falls between the stationary roller 2 and the moving roller 3. It is crushed by the moving roller 3. During the crushing process, the lithium battery positive electrode material 4 powder moves towards the ends of the stationary roller 2 and the moving roller 3, thereby contacting the sealing device of the existing sealing device and generating friction. Since the metal surface of the existing sealing device is coated with a black PTFE layer, when the lithium battery positive electrode material 4 powder comes into contact with the black PTFE layer, the black PTFE... When the FE layer is damaged, the resulting debris enters the existing sealing device and wears down the internal parts, generating metallic magnetic foreign objects. These metallic magnetic foreign objects not only flow into the lithium battery cathode material 4 as the roller (shown in the figure as a multi-layer roller crusher) rotates, contaminating the lithium battery cathode material 4, but also damage the existing sealing device. Because these metallic magnetic foreign objects are very small, existing filtration devices cannot effectively filter them out, causing great harm to the production and processing of the lithium battery cathode material 4.

[0046] To address the aforementioned technical problems, the present invention will be further described in detail below with reference to the accompanying drawings:

[0047] This embodiment proposes a ceramic roller shaft end sealing device for a crusher and a crusher. Firstly, it provides a ceramic roller shaft end sealing device for a crusher, such as... Figures 4-9As shown, the sealing device 5 includes: a mounting component 501, made of heat-treated cast nylon; a baffle 502, made of polyetheretherketone (PEEK) material, with a step 5021 on the baffle 502. The step 5021 has an annular structure and a sealing groove, also annular, with a sealing strip 5023 inside the sealing groove. The outer side of the sealing strip 5023 is in close contact with the inner wall of the sealing groove. The baffle 502 is fitted onto the outside of the mounting component 501 so that the outer side of the mounting component 501 is movably connected to the sealing strip 5023; a reinforcing member 5022 is disposed on the baffle 502, connected to the step 5021, and perpendicular to the axial direction of the sealing groove. The step 5021 and the reinforcing member 5022 cooperate to further enhance the strength of the baffle 502. Figure 8 As shown, the sealing element 503, made of polytetrafluoroethylene, is sleeved on the outside of the mounting element 501 and located on the step 5021; the clamping element 504 is disposed on the sealing element 503, and the edge of the clamping element 504 is connected to the step 5021 by fasteners 505. In the sealing device 5, since the mounting element 501, the baffle 502, and the sealing element 503 are made of non-metallic materials, after being assembled with the stainless steel clamping element 504, when they come into contact with the lithium battery positive electrode material 4 as they rotate with the roller, they can effectively prevent the generation of magnetic foreign objects and avoid contamination of the lithium battery positive electrode material 4; secondly, the plastic sealing element 503 has excellent self-lubricating properties, avoiding the problem of easy wear, improving the service life of the mounting element 501 and the baffle 502, and reducing production costs.

[0048] like Figure 5 , Figure 6 and Figure 7 As shown, step 5021 is set in the middle of baffle 502, which enhances the strength and rigidity of baffle 502, making it less prone to deformation or damage when subjected to external pressure or impact. One end of mounting member 501 is tightly attached to the bottom of baffle 502, making the installation between mounting member 501 and baffle 502 more secure. The other end of mounting member 501 extends outward through the sealing groove and is located above clamping member 504.

[0049] In this embodiment, the mounting component 501 is preferably a bushing with a wall thickness of 7.5mm. Since the mounting component 501 is made of heat-treated cast nylon, the coefficient of friction of cast nylon is 8.8 times lower than that of steel, and its specific gravity is only 1 / 8 of that of steel. On the one hand, it can directly replace stainless steel and carbon steel metal products, and the surface does not need to be painted, resulting in low cost and long service life. On the other hand, since the bushing has a wall thickness of 7.5mm, the rotational friction between the bushing and the baffle 502 is reduced, which greatly increases the wear resistance of the bushing and the baffle 502. Furthermore, the wear of cast nylon material is very small, and the wear particles are generally in the form of fine filaments, which can be cleaned away by subsequent screening processes, thus preventing the generation of metallic magnetic foreign objects.

[0050] In this embodiment, the sealing groove is an annular structure, and the outer side of the sealing strip 5023 is bonded to the inner side of the sealing groove. The sealing groove is designed as an annular structure, which is tightly bonded to the outer side of the sealing strip 5023, forming a continuous, gapless sealing interface, ensuring the reliability of the seal. The inner side of the sealing strip 5023 is movably connected to the outer side of the mounting part 501, and the inner diameter of the sealing strip 5023 is 0.2mm smaller than the inner diameter of the sealing groove. In addition to ensuring a tighter installation between the mounting part 501 and the baffle 502, this also effectively prevents the penetration of the lithium battery positive electrode material 4 and avoids the generation of metallic magnetic foreign objects.

[0051] In this embodiment, the reinforcing member 5022 is preferably a reinforcing rib. One end of the reinforcing member 5022 is connected to the step 5021 and is flush with the end face of the step 5021. The direct connection of the reinforcing member 5022 to the step 5021 can effectively increase the rigidity and stability of the entire baffle 502 structure, helping to prevent deformation or damage caused by external forces, especially in situations where it is subjected to large pressure or impact. The flush connection between the reinforcing member 5022 and the end face of the step 5021 ensures a larger contact area and better contact condition at the connection, which helps to improve the strength of the connection and make the connection more secure and reliable.

[0052] In this embodiment, a blind hole 5020 is provided at the top of the step 5021, and the blind hole 5020 is arranged circumferentially along the axis of the sealing groove; multiple pressing holes 5041 are provided circumferentially at the edge of the pressing member 504, and the blind hole 5020 and the pressing holes 5041 are fixedly connected by fasteners 505. By connecting the blind hole 5020 on the step 5021 with the pressing hole 5041 on the pressing member 504 by fasteners 505, it can be ensured that the pressing member 504 is tightly pressed on the sealing step 5021, thereby further improving the sealing performance of the entire device.

[0053] In this embodiment, the sealing strip 5023 is preferably a ring-shaped structure.

[0054] In this embodiment, as Figure 9 As shown, the seal 503 is preferably a soft PTFE sealing ring.

[0055] In this embodiment, the fastener 505 is preferably a screw.

[0056] In this embodiment, as Figure 9 As shown, the clamping component 504 has a ring-shaped structure and is machined from stainless steel.

[0057] Secondly, a crusher is provided, which is equipped with a roller shaft, and the end of the roller shaft is equipped with a sealing device 5 as described above.

[0058] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sealing device for the end of a ceramic roller shaft of a crusher, characterized in that, include: The mounting part (501) is made of heat-treated cast nylon; The baffle (502) is made of polyetheretherketone material. The baffle (502) has a step (5021) and a sealing groove is provided on the step (5021). A sealing strip (5023) is provided in the sealing groove. The baffle (502) is sleeved on the outside of the mounting part (501) so that the outside of the mounting part (501) is movably connected to the sealing strip (5023); A reinforcing member (5022) is disposed on the baffle (502), connected to the step (5021), and perpendicular to the axial direction of the sealing groove; The seal (503) is made of polytetrafluoroethylene and is fitted on the outside of the mounting part (501) and located on the step (5021); A clamping member (504) is disposed on the sealing member (503), and the edge of the clamping member (504) is connected to the step (5021) by a fastener (505); The step (5021) is located in the middle of the baffle (502). One end of the mounting member (501) is close to the bottom of the baffle (502), and the other end extends outward through the sealing groove and is located above the clamping member (504). The mounting component (501) is a bushing with a wall thickness of 7.5 mm; The sealing groove is an annular structure. The outer side of the sealing strip (5023) is bonded to the inner side of the sealing groove. The inner side of the sealing strip (5023) is movably connected to the outer side of the mounting part (501). The inner diameter of the sealing strip (5023) is 0.2 mm smaller than the inner diameter of the sealing groove. One end of the reinforcing member (5022) is connected to the step (5021) and is flush with the end face of the step (5021); The top of the step (5021) is provided with a blind hole (5020), which is arranged around the circumference of the sealing groove axis; The clamping member (504) has a plurality of clamping holes (5041) circumferentially formed at the edge of the clamping member (5041), and the blind hole (5020) is fixedly connected to the clamping hole (5041) by a fastener (505); The fastener (505) is a screw.

2. The apparatus according to claim 1, characterized in that, The clamping component (504) is machined from stainless steel.

3. The apparatus according to claim 1 or 2, characterized in that, The clamping element (504) has a ring-shaped structure.

4. A crusher, characterized in that, The crusher is equipped with a roller shaft, and the end of the roller shaft is equipped with a sealing device as described in any one of claims 1-3.

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