Polishing device for ceramic sealing element

Abstract

The invention relates to the technical field of polishing equipment, in particular to a polishing device for a ceramic sealing element, which comprises a base, a lower millstone and an upper millstone are mounted on the base, a wandering star wheel is arranged on the upper millstone, and a driving part is further arranged on the base and can drive the lower millstone, the upper millstone and the wandering star wheel to cooperatively operate so as to polish a workpiece. The base is provided with a pushing piece which is connected with the circular ring II and the circular ring I, and can drive the circular ring II and the circular ring I to move upwards, push the wandering star wheel to be separated from the lower millstone and close to the upper millstone and form a plane with the top end of a workpiece, so that a gap for flowing of grinding fluid is formed between the wandering star wheel and the lower millstone, and the grinding fluid is guided to flow to the top end of the workpiece; the pushing piece drives the circular ring to move, and the wandering star wheel moves up and down, keeps away from the lower millstone to guarantee flowing of grinding fluid and gets close to the upper millstone to receive and guide the grinding fluid. After the pushing piece is reset, the wandering star wheel moves downwards to discharge impurities, too high concentration of grinding fluid at the top end of the workpiece is avoided, two ends of the workpiece are ground more uniformly, and grinding fluid loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically to a polishing device for ceramic seals. Background Technology

[0002] Ceramic seals are made of ceramic materials such as alumina and include sealing rings. Silicon carbide ceramics are widely used due to their superior performance, cost-effectiveness, and service life compared to metal seals, making them suitable for high-temperature and highly corrosive environments. During production, polishing and grinding are required to improve sealing performance. In existing technologies, double-end polishing machines are commonly used for processing ceramic seals. They use upper and lower grinding discs to simultaneously polish both ends of the ceramic seal and are equipped with a planetary wheel that can move between the upper and lower grinding discs to improve the uniformity of polishing.

[0003] In existing double-end polishing machine technology, the planetary wheel is placed directly against the lower grinding disc to drive the workpiece to move between the upper and lower grinding discs to achieve polishing. However, this close contact structure hinders the flow of polishing fluid, resulting in uneven distribution of the liquid film in the processing area. At the same time, since the planetary wheel is lower than the workpiece, the top of the workpiece only makes single-point contact with the upper grinding disc. After the polishing fluid is injected from the holes of the upper grinding disc, it seeps down quickly under the influence of gravity, which shortens the polishing fluid renewal cycle and reduces the effective working time in the area where the upper end of the workpiece contacts the upper grinding disc. It is necessary to continuously replenish the polishing fluid excessively to maintain processing stability, which not only wastes the polishing fluid, but also reduces the surface uniformity of the workpiece due to the uneven liquid film. To address this, we propose a polishing device for ceramic seals. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a polishing device for ceramic seals, comprising a base, a lower grinding disc and an upper grinding disc mounted on the base, wherein a planetary wheel is provided on the upper grinding disc, and a driving component mounted on the base. The driving component is connected to the lower grinding disc, the upper grinding disc and the planetary wheel, and is used to drive the lower grinding disc, the upper grinding disc and the planetary wheel to work together to polish the workpiece. The inner and outer edges of the lower grinding disc are respectively provided with a second ring and a first ring that contact the planetary wheel. A pushing component connected to the first ring and the second ring is provided on the base, which is used to drive the first ring and the second ring to move upward, thereby pushing the planetary wheel away from the lower grinding disc and closer to the upper grinding disc to form a plane with the top of the workpiece, so that a gap for the polishing fluid to flow is formed between the planetary wheel and the lower grinding disc, and the polishing fluid is guided to flow to the top of the workpiece.

[0005] In some embodiments, the pusher includes a plurality of L-shaped support plates fixedly connected to a ring, and a sliding ring is fixedly connected to one end of each of the plurality of L-shaped support plates. An electric push rod is provided inside the base, and the extended end of the electric push rod is connected to the sliding ring. When the electric push rod is activated, it drives the ring to move. Multiple L-shaped support plates are evenly fixedly connected to the circular ring 2. A sliding ring 2 is fixedly connected to one end of each L-shaped support plate 2. Multiple electric push rods 2 are fixedly connected inside the base. The extended end of each electric push rod 2 is connected to the sliding ring 2. When the electric push rod 2 is activated, it drives the circular ring 2 to move.

[0006] In some embodiments, an annular groove is formed on the first ring, and multiple air guide pipes communicating with the annular groove are fixedly connected to the first ring. The air guide pipes are connected to an external air pump for filling the annular groove with gas. Multiple cylindrical grooves are evenly formed on the bottom edge of the planetary wheel, and an exhaust groove is formed at the center of the planetary wheel. An air guide groove is formed inside the planetary wheel to connect the cylindrical grooves and the exhaust groove. When the exhaust groove discharges gas, an air cushion layer can be formed between the contact surface of the planetary wheel and the upper or lower grinding disc, which can effectively reduce frictional resistance and loosen the joint state, making it easier for the planetary wheel to separate quickly.

[0007] In some embodiments, a limiting ring is fixedly connected inside the cylindrical groove, and a sealing steel ball is placed on one side of the limiting ring for unidirectional sealing of the cylindrical groove.

[0008] In some embodiments, the driving component includes a hollow column fixedly connected to the lower grinding disc, a plurality of toothed protrusions are uniformly fixedly connected to one end of the hollow column, and a drive motor is fixedly connected inside the base. A geared disc that meshes with the toothed protrusions is fixedly connected to the output shaft of the drive motor. When the drive motor is started, it drives the lower grinding disc to rotate. A second shaft is rotatably connected to the base. A connecting column is fixedly connected to one end of the second shaft outside the base for connecting the upper grinding disc. A second drive motor is fixedly connected inside the base. The output shaft of the second drive motor is connected to the second shaft through a coupling. When the second drive motor is started, it drives the upper grinding disc to rotate. A hollow column 2 is rotatably connected to the base. One end of the hollow column 2 passes through the base and is located in the center hole of the upper grinding disc. Multiple cylindrical pins are evenly fixedly connected to one end of the hollow column 2. Multiple arc-shaped grooves that mesh with the cylindrical pins are evenly opened on the planetary wheel. An installation ring is fixedly connected to the base. The installation ring is located at the outer edge of the lower grinding disc. Cylindrical pins that mesh with the arc-shaped grooves are also evenly fixedly connected to the installation ring at equal intervals. When the hollow column 2 is rotated, the planetary wheel is driven to roll along the installation ring. Multiple toothed protrusions are evenly fixedly connected to one end of the hollow column 2. A toothed disc 2 that meshes with the toothed protrusions is rotatably connected inside the base via a rotating shaft. A toothed disc 3 that meshes with the toothed disc 2 is fixedly connected to the output shaft of the drive motor 1. When the drive motor 1 is started, it drives the hollow column 2 to rotate.

[0009] In some embodiments, a gantry frame is fixedly connected to the base, and a hydraulic cylinder is fixedly connected to the gantry frame. The extended end of the hydraulic cylinder is rotatably connected to the upper grinding disc, and a sliding protrusion is fixedly connected to the center hole of the upper grinding disc. A sliding groove is provided on the connecting column. When the sliding protrusion is embedded in the sliding groove to form a sliding fit, the upper grinding disc can be synchronously driven to rotate in a directional manner by rotating the connecting column, thereby realizing the drive control and stable operation of the upper grinding disc.

[0010] In some embodiments, a plurality of supporting cylinders are uniformly fixedly connected to the sliding ring, a circular plate is fixedly connected to the extended end of the electric push rod, and an elastic pad is fixedly connected between the circular plate and the supporting cylinder. Furthermore, a rotating ring is rotatably connected to the bottom end of the sliding ring, and multiple supporting cylinders are also uniformly fixedly connected to the rotating ring. A top rod is fixedly connected to the extended end of the electric push rod, and a circular plate is also fixedly connected to one end of the top rod. An elastic pad is also fixedly connected between the circular plate and the supporting cylinder.

[0011] This invention has at least the following beneficial effects: During operation, the pusher drives rings one and two to move, which in turn pushes the planetary wheel vertically upward relative to the upper and lower grinding discs. As the planetary wheel moves upward away from the lower grinding disc, a gap is formed between them, ensuring smooth flow of the grinding fluid to fully act on the machining area. When it moves upward towards the upper grinding disc, it simultaneously approaches the top of the workpiece, receiving and guiding the grinding fluid precisely to the workpiece, improving machining efficiency. After the pusher resets, the planetary wheel moves downward due to its own gravity, reducing the gap between its lower surface and the lower grinding disc, creating a localized high-pressure zone that facilitates the discharge of waste chips and other impurities from the grinding fluid. Furthermore, the grinding fluid from the upper grinding disc can flow directly into the lower grinding disc, preventing excessively high grinding fluid concentration at the top of the workpiece. Thus, the planetary wheel's periodic up-and-down movement ensures more uniform grinding at both ends of the workpiece while reducing grinding fluid consumption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Another structural diagram; Figure 3 For the present invention Figure 2 Schematic diagram of partial cross-section; Figure 4 For the present invention Figure 3 Schematic diagram of partial cross-section; Figure 5 For the present invention Figure 4 Schematic diagram of partial cross-section; Figure 6 For the present invention Figure 5 Schematic diagram of the structure of area A in the middle; Figure 7 For the present invention Figure 5 Explosion structure diagram; Figure 8 This is a schematic diagram of the two hollow column structures of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of partial cross-section; Figure 10 This is a schematic diagram of the structure at the lower grinding disc of the present invention; Figure 11 This is a schematic diagram of the planetary wheel structure of the present invention; Figure 12 For the present invention Figure 11 Schematic diagram of partial cross-section.

[0013] In the diagram: 1-Base; 11-Lower grinding disc; 12-Upper grinding disc; 13-Plane wheel; 2-Drive component; 3-Ring 1; 4-Ring 2; 5-Push component; 14-L-shaped support plate 1; 15-Sliding ring 1; 16-Electric push rod 1; 17-L-shaped support plate 2; 18-Sliding ring 2; 19-Electric push rod 2; 21-Annular groove; 22-Air guide pipe; 23-Cylindrical groove; 25-Air guide groove; 26-Limiting ring; 27-Sealing steel ball; 28-Hollow column 1; 29 - Tooth protrusion 1; 31- Drive motor 1; 32- Gear disc 1; 33- Shaft 2; 34- Connecting column; 35- Drive motor 2; 36- Hollow column 2; 37- Cylindrical pin; 38- Arc groove; 39- Mounting ring; 41- Tooth protrusion 2; 42- Gear disc 2; 43- Gear disc 3; 44- Gantry frame; 45- Hydraulic cylinder; 46- Sliding protrusion; 47- Sliding groove; 48- Supporting cylinder; 49- Circular plate; 51- Elastic pad; 52- Rotating ring; 24- Exhaust groove; 54- Push rod. Detailed Implementation

[0014] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-12 The present invention provides a technical solution: a polishing device for ceramic seals, including a base 1, and a lower grinding disc 11 and an upper grinding disc 12 mounted on the base 1. Both the upper grinding disc 12 and the lower grinding disc 11 adopt a circular design, and a planetary wheel 13 is provided on the upper grinding disc 12. The device also includes a driving component 2 mounted on the base 1. The driving component 2 is connected to the lower grinding disc 11, the upper grinding disc 12 and the planetary wheel 13, and is used to drive the lower grinding disc 11, the upper grinding disc 12 and the planetary wheel 13 to work together, thereby achieving polishing of the workpiece. Specifically, the driving component 2 includes a hollow column 28 fixedly connected to the lower grinding disc 11. One end of the hollow column 28 is located inside the base 1 and rotatably connected to its inner wall. A plurality of toothed protrusions 29 are evenly fixedly connected to one end of the hollow column 28. A drive motor 31 is fixedly connected inside the base 1. A gear disk 32 that meshes with the toothed protrusions 29 is fixedly connected to the output shaft of the drive motor 31. When the drive motor 31 is started, the gear disk 32 is rotated, which in turn drives the hollow column 28 to rotate, thereby driving the lower grinding disc 11 to rotate. A shaft 33 is rotatably connected to the base 1. A connecting column 34 is fixedly connected to one end of the shaft 33 outside the base 1 for connecting the upper grinding disc 12. A gantry frame 44 is fixedly connected to the base 1. A hydraulic cylinder 45 is fixedly connected to the gantry frame 44. The extended end of the hydraulic cylinder 45 is rotatably connected to the upper grinding disc 12. A sliding protrusion 46 is fixedly connected to the center hole of the upper grinding disc 12. A sliding groove 47 is provided on the connecting column 34. By starting the hydraulic cylinder 45, the upper grinding disc 12 is driven to descend, so that the connection is inserted into the center hole of the upper grinding disc 12. During this process, when the sliding protrusion 46 is embedded in the sliding groove 47 to form a sliding fit, the upper grinding disc 12 can be synchronously driven to rotate in a direction by rotating the connecting column 34, thereby realizing the drive control and stable operation of the upper grinding disc 12.

[0016] Furthermore, a second drive motor 35 is fixedly connected inside the base 1. The output shaft of the second drive motor 35 is connected to the second shaft 33 through a coupling. When the second drive motor 35 is started, the second shaft 33 is rotated, which in turn drives the connecting column 34 to rotate, thereby driving the upper grinding disc 12 to rotate through the connecting column 34. A hollow column 36 is rotatably connected to the base 1. One end of the hollow column 36 passes through the base 1 and is located in the center hole of the upper grinding disc 12. Multiple cylindrical pins 37 are evenly fixedly connected to one end of the hollow column 36. Multiple arc-shaped grooves 38 that mesh with the cylindrical pins 37 are evenly opened on the planetary wheel 13. An installation ring 39 is fixedly connected to the base 1. The installation ring 39 is located at the outer edge of the lower grinding disc 11. Cylindrical pins 37 that mesh with the arc-shaped grooves 38 are also evenly fixedly connected to the installation ring 39 at equal intervals. When the hollow column 36 is rotated, the planetary wheel 13 is driven to roll along the installation ring 39. Multiple toothed protrusions 41 are evenly fixedly connected to one end of the hollow column 36. A geared disc 42, meshing with the toothed protrusions 41, is rotatably connected to the base 1 via a rotating shaft. A geared disc 43, meshing with the geared disc 42, is fixedly connected to the output shaft of the drive motor 31. When the drive motor 31 is started, it drives the hollow column 36 to rotate. Specifically, starting the drive motor 31 causes it to operate and rotate the geared disc 43. During rotation, the geared disc 43, through meshing with the geared disc 42, drives the geared disc 42 to rotate. Because the hollow column 36 is fixedly connected to the geared disc 42 and the toothed protrusions 41, the rotation of the geared disc 42 synchronously drives the hollow column 36 to rotate. The cylindrical pin 37 on the hollow column 36 then performs a circular motion, which in turn rotates the planetary wheel 13. When the planetary wheel 13 rotates, it rolls along the cylindrical pin 37 set on the mounting ring 39, thereby causing the workpiece placed therein to move relative to the upper grinding disc 12 and the lower grinding disc 11, thus realizing the polishing operation of the workpiece.

[0017] The lower grinding disc 11 has two annular rings 4 and 3 on its inner and outer edges, respectively. Both annular rings 3 and 4 abut against the planetary wheel 13. Multiple arc-shaped guide grooves are evenly distributed on annular rings 3 and 4, which can slide with the cylindrical pin 27. Thanks to the arc-shaped guide groove design, the edges of annular rings 3 and 4 can extend into the gap of the cylindrical pin 27. This increases their contact area with the planetary wheel 13, providing more stable and reliable support when the planetary wheel 13 needs to be lifted, ensuring that the planetary wheel 13 does not wobble or shift during operation, and guaranteeing the smooth operation of the entire polishing device. Ring 2 4 is set on the inner edge of the lower grinding disc 11 and contacts and abuts against the planetary wheel 13; The pusher 5 is set on the base 1 and connected to the first ring 3 and the second ring 4. It is used to drive the first ring 3 and the second ring 4 to move upward, so as to push the planetary wheel 13 away from the lower grinding plate 11 and approach the upper grinding plate 12 and form a plane with the top of the workpiece, so that a gap for the grinding fluid to flow is formed between the planetary wheel 13 and the lower grinding plate 11, and the grinding fluid is guided to flow to the top of the workpiece. Specifically, when the device is in operation, the pusher 5 drives the first ring 3 and the second ring 4 to move, which in turn drives the planetary wheel 13 to move vertically upward relative to the upper grinding disc 12 and the lower grinding disc 11. Firstly, when the planetary wheel 13 moves upward away from the lower grinding disc 11, a gap is formed between the planetary wheel 13 and the lower grinding disc 11. This gap ensures that the grinding fluid can flow smoothly without obstruction, guaranteeing that the grinding fluid fully acts on the processing area. Secondly, when the planetary wheel 13 moves upward towards the upper grinding disc 12, it simultaneously approaches the top of the workpiece. At this time, the planetary wheel 13 can receive the grinding fluid flowing from the upper grinding disc 12 and effectively guide the grinding fluid to flow precisely to the top of the workpiece, improving the processing effect of the grinding fluid on the workpiece. Subsequently, when the pusher 5 resets, the planetary wheel 13... As the planetary wheel 13 moves downward under its own weight, the gap between the lower surface of the planetary wheel 13 and the lower grinding disc 11 decreases, forming a local high-pressure zone. This forces impurities such as waste chips and metal particles in the grinding fluid to be discharged through the edge of the grinding disc or the pre-set drainage channel. At the same time, when the planetary wheel 13 moves downward, the grinding fluid in the upper grinding disc 12 can flow directly into the lower grinding disc 11, avoiding the grinding fluid concentration at the top of the workpiece being too high for a long time. Furthermore, the periodic up-and-down movement of the planetary wheel 13 makes the grinding of both ends of the workpiece uniform, while reducing the consumption of grinding fluid.

[0018] The pusher 5 includes multiple L-shaped support plates 14 fixedly connected to the ring 3. One end of each L-shaped support plate 14 is fixedly connected to a sliding ring 15. An electric push rod 16 is fixedly connected inside the base 1. The extended end of the electric push rod 16 is connected to the sliding ring 15. When the electric push rod 16 is activated, it drives the ring 3 to move. Multiple L-shaped support plates 17 are evenly fixedly connected to the ring 4. One end of each L-shaped support plate 17 is fixedly connected to a sliding ring 18. Multiple electric push rods 19 are fixedly connected inside the base 1. The extended end of the electric push rod 19 is connected to the sliding ring 18. When the electric push rod 19 is started, it drives the ring 4 to move.

[0019] The annular groove 21 is provided on the annular ring 3, and multiple air guide pipes 22 that communicate with the annular groove 21 are fixedly connected to the annular ring 3. The air guide pipes 22 are connected to an external air pump and are used to fill the annular groove 21 with gas. Multiple cylindrical grooves 23 are evenly distributed along the bottom edge of the planetary wheel 13, and an exhaust groove 24 is provided at the center of the planetary wheel 13. An air guide groove 25 is provided inside the planetary wheel 13 to connect the cylindrical grooves 23 and the exhaust groove 24. When the planetary wheel 13 needs to be moved, the external air pump is first started, so that the gas passes through the air guide pipe 22, the annular groove 21, the cylindrical groove 23, and the air guide groove 25 in sequence and enters the exhaust groove 24. Subsequently, when the exhaust groove 24 discharges the gas, an air cushion layer can be formed between the contact surface of the planetary wheel 13 and the upper grinding disc 12 or the lower grinding disc 11, which effectively reduces frictional resistance and loosens the joint state, making it easier for the planetary wheel 13 to separate quickly, thereby reducing the probability of the planetary wheel 13 shaking, so as to ensure processing accuracy and improve the flow rate during the operation of the device.

[0020] A limiting ring 26 is fixedly connected inside the cylindrical groove 23, and a sealing steel ball 27 is placed on one side of the limiting ring 26. The diameter of the sealing steel ball 27 is smaller than that of the cylindrical groove 23, so it can slide smoothly inside the cylindrical groove 23. It is used to seal the cylindrical groove 23 in one direction, thereby preventing air leakage from the cylindrical groove 23 that is not connected to the annular groove 21. During operation, gas is filled into the cylindrical groove 23, which pushes the sealing steel ball 27 to move upward and open the cylindrical groove 23, thereby allowing the gas to enter the gas guide groove 25.

[0021] Multiple supporting cylinders 48 are evenly fixedly connected to the sliding ring 15. A circular plate 49 is fixedly connected to the extended end of the electric push rod 16. An elastic pad 51 is fixedly connected between the circular plate 49 and the supporting cylinders 48. Furthermore, a rotating ring 52 is rotatably connected to the bottom end of the sliding ring 15, and multiple supporting cylinders 48 are also evenly fixedly connected to the rotating ring 52. A push rod 54 is fixedly connected to the extended end of the electric push rod 19, and a circular plate 49 is also fixedly connected to one end of the push rod 54. An elastic pad 51 is also fixedly connected between the circular plate 49 and the supporting cylinders 48. By setting an elastic pad 51 between the circular plate 49 and the supporting cylinder 48, the elastic pad 51 can play a buffering and shock-absorbing role when the electric push rod 16 or the electric push rod 19 pushes the relevant parts. During the operation of the equipment, it can effectively absorb and disperse the impact force generated by the movement and contact of the parts, reduce the damage caused by rigid collisions to the equipment parts, extend the service life of the equipment, and improve the stability of the equipment operation.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A polishing apparatus for ceramic seals, comprising a base (1), and a lower grinding disc (11) and an upper grinding disc (12) mounted on the base (1), wherein a planetary wheel (13) is provided on the upper grinding disc (12), characterized in that, It also includes: The driving component (2) is set on the base (1) and connected to the lower grinding disc (11), the upper grinding disc (12) and the planetary wheel (13). It is used to drive the lower grinding disc (11), the upper grinding disc (12) and the planetary wheel (13) to work together to polish the workpiece. Ring 1 (3) is set on the outer edge of the lower grinding disc (11) and contacts the planetary wheel (13); The second ring (4) is set on the inner edge of the lower grinding disc (11) and contacts the planetary wheel (13); The pusher (5) is set on the base (1) and connected to the first ring (3) and the second ring (4). It is used to drive the first ring (3) and the second ring (4) to move upward, so as to push the planetary wheel (13) away from the lower grinding disc (11) and approach the upper grinding disc (12) and form a plane with the top of the workpiece, so that a gap for the grinding fluid to flow is formed between the planetary wheel (13) and the lower grinding disc (11), and at the same time guide the grinding fluid to flow to the top of the workpiece.

2. The polishing apparatus for ceramic seals according to claim 1, characterized in that: The pusher (5) includes multiple L-shaped support plates (14) fixedly connected to the ring (3). One end of each L-shaped support plate (14) is fixedly connected to a sliding ring (15). An electric push rod (16) is provided inside the base (1). The extended end of the electric push rod (16) is connected to the sliding ring (15). When the electric push rod (16) is started, it drives the ring (3) to move. Multiple L-shaped support plates (17) are evenly fixedly connected to the circular ring (4). A sliding ring (18) is fixedly connected to one end of each L-shaped support plate (17). Multiple electric push rods (19) are fixedly connected inside the base (1). The extended end of the electric push rod (19) is connected to the sliding ring (18). When the electric push rod (19) is started, it drives the circular ring (4) to move.

3. The polishing apparatus for ceramic seals according to claim 2, characterized in that: The annular groove (21) is provided on the first ring (3), and multiple air guide pipes (22) connected to the annular groove (21) are fixedly connected to the first ring (3). The air guide pipes (22) are connected to an external air pump and are used to fill the annular groove (21) with gas. Multiple cylindrical grooves (23) are evenly provided at the bottom edge of the planetary wheel (13), and an exhaust groove (24) is provided at the center of the planetary wheel (13). An air guide groove (25) is provided inside the planetary wheel (13) to connect the cylindrical groove (23) and the exhaust groove (24). When the exhaust groove (24) discharges gas, an air cushion layer can be formed between the planetary wheel (13) and the contact surface of the upper grinding disc (12) or the lower grinding disc (11), which effectively reduces frictional resistance and loosens the joint state, making it easier for the planetary wheel (13) to separate quickly.

4. The polishing apparatus for ceramic seals according to claim 3, characterized in that: A limiting ring (26) is fixedly connected inside the cylindrical groove (23), and a sealing steel ball (27) is placed on one side of the limiting ring (26) for unidirectional sealing of the cylindrical groove (23).

5. The polishing apparatus for ceramic seals according to claim 4, characterized in that: The driving component (2) includes a hollow column (28) fixedly connected to the lower grinding disc (11). A plurality of toothed protrusions (29) are evenly fixedly connected to one end of the hollow column (28). A driving motor (31) is fixedly connected inside the base (1). A gear disk (32) that meshes with the toothed protrusions (29) is fixedly connected to the output shaft of the driving motor (31). When the driving motor (31) is started, it drives the lower grinding disc (11) to rotate. A shaft 2 (33) is rotatably connected to the base (1). A connecting column (34) is fixedly connected to one end of the shaft 2 (33) outside the base (1) for connecting the upper grinding disc (12). A drive motor 2 (35) is fixedly connected inside the base (1). The output shaft of the drive motor 2 (35) is connected to the shaft 2 (33) through a coupling. When the drive motor 2 (35) is started, it drives the upper grinding disc (12) to rotate. A hollow column 2 (36) is rotatably connected to the base (1). One end of the hollow column 2 (36) passes through the base (1) and is located in the center hole of the upper grinding disc (12). A number of cylindrical pins (37) are evenly fixedly connected to one end of the hollow column 2 (36). A number of arc-shaped grooves (38) that mesh with the cylindrical pins (37) are evenly opened on the planetary wheel (13). An installation ring (39) is fixedly connected to the base (1). The installation ring (39) is located at the outer edge of the lower grinding disc (11). A number of cylindrical pins (37) that mesh with the arc-shaped grooves (38) are also evenly fixedly connected to the installation ring (39). When the hollow column 2 (36) is rotated, the planetary wheel (13) is driven to roll along the installation ring (39). Multiple toothed protrusions (41) are uniformly fixedly connected to one end of the hollow column (36). A toothed disc (42) that meshes with the toothed protrusions (41) is rotatably connected inside the base (1) via a rotating shaft. A toothed disc (43) that meshes with the toothed disc (42) is fixedly connected to the output shaft of the drive motor (31). When the drive motor (31) is started, it drives the hollow column (36) to rotate.

6. The polishing apparatus for ceramic seals according to claim 5, characterized in that: A gantry frame (44) is fixedly connected to the base (1), and a hydraulic cylinder (45) is fixedly connected to the gantry frame (44). The extended end of the hydraulic cylinder (45) is rotatably connected to the upper grinding disc (12), and a sliding protrusion (46) is fixedly connected to the center hole of the upper grinding disc (12). A sliding groove (47) is provided on the connecting column (34). When the sliding protrusion (46) is embedded in the sliding groove (47) to form a sliding fit, the upper grinding disc (12) can be synchronously driven to rotate in a direction by rotating the connecting column (34), thereby realizing the drive control and stable operation of the upper grinding disc (12).

7. The polishing apparatus for ceramic seals according to claim 6, characterized in that: Multiple supporting cylinders (48) are uniformly fixedly connected on the sliding ring (15), and a circular plate (49) is fixedly connected to the extended end of the electric push rod (16). An elastic pad (51) is fixedly connected between the circular plate (49) and the supporting cylinders (48). Furthermore, a rotating ring (52) is rotatably connected to the bottom end of the sliding ring (15), and multiple supporting cylinders (48) are uniformly fixedly connected to the rotating ring (52). A top rod (54) is fixedly connected to the extended end of the electric push rod (19), and a circular plate (49) is fixedly connected to one end of the top rod (54). An elastic pad (51) is also fixedly connected between the circular plate (49) and the supporting cylinder (48).

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