Grinding wheel for photovoltaic glass

Abstract

The application provides a grinding wheel for photovoltaic glass, and belongs to the technical field of grinding tools.The technical scheme is as follows: the grinding wheel comprises an installation base disc and a grinding wheel body assembly, the installation base disc is sleeved with the grinding wheel body assembly, the grinding wheel body assembly comprises first, second, third and fourth grinding wheel bodies connected in sequence, connection holes are formed in the central positions of the first, second, third and fourth grinding wheel bodies, the installation base disc is detachably connected with the four groups of connection holes through a connecting assembly, and a cooling assembly is arranged in the grinding wheel body assembly.The cooling assembly can cool the grinding wheel body assembly through multiple water inlet grooves and multiple backflow grooves, solves the problem of uneven distribution of cooling water of the traditional grinding wheel, and improves the cooling effect of the grinding wheel.

Description

Technical Field

[0001] This invention belongs to the field of grinding tool technology, and more specifically, relates to a grinding wheel for grinding photovoltaic glass. Background Technology

[0002] With the increasing global demand for clean energy, the photovoltaic industry has developed rapidly. Grinding is a crucial process in the production of photovoltaic glass, directly affecting its surface quality and performance. To meet the demands for efficient and high-quality grinding, the requirements for grinding wheels are becoming increasingly stringent.

[0003] For example, Chinese utility model patent No. 201120332540.1 provides a grinding diamond wheel for deep processing of solar glass. This grinding wheel consists of a first substrate, a second substrate, and a diamond layer. During use, the second substrate is attached to the outer wall of the first substrate, and the processing equipment is connected through the first substrate. The outer surface of the second substrate is connected to the diamond layer, and the hardness of the diamond layer is used to process the photovoltaic glass. Traditionally, when grinding photovoltaic glass, the grinding wheel is usually cooled by an external cooling nozzle. Cooling water is sprayed onto the surface of the grinding wheel through the nozzle to reduce the temperature of the grinding wheel during the grinding process. However, the external cooling nozzle can only cool the surface of the grinding wheel and cannot effectively reduce the internal temperature of the grinding wheel. In addition, the distribution of cooling water is not uniform, which affects the cooling effect of the grinding wheel. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a grinding wheel for photovoltaic glass, which solves the technical problem that in the prior art, traditional grinding wheels are cooled by external cooling nozzles, which can only cool the surface of the grinding wheel and cannot effectively reduce the internal temperature of the grinding wheel. Furthermore, the distribution of cooling water is uneven, thus affecting the cooling effect of the grinding wheel.

[0005] The purpose and effect of the photovoltaic glass grinding wheel of the present invention are achieved by the following specific technical means:

[0006] A grinding wheel for photovoltaic glass includes a mounting base disk and a grinding wheel assembly. The grinding wheel assembly is sleeved on the mounting base disk. The grinding wheel assembly includes a first grinding wheel, a second grinding wheel, a third grinding wheel, and a fourth grinding wheel connected in sequence. Each of the first, second, third, and fourth grinding wheels has a connecting hole at the center of one side. The mounting base disk is detachably connected to the four sets of connecting holes through connecting components. A cooling component is also provided inside the grinding wheel assembly.

[0007] In a preferred embodiment, the connecting component includes a first positioning ring, which is provided on the outer surface of the mounting base plate. The second grinding wheel body and the third grinding wheel body have positioning ring grooves on their adjacent sides corresponding to the first positioning ring, and both sets of positioning ring grooves are connected to the first positioning ring.

[0008] In a preferred embodiment, the connecting assembly further includes four sets of first positioning posts, the outer surface of the mounting base plate is provided with four sets of first positioning posts, all four sets of first positioning posts are located on one side of the first positioning ring, and the outer surface of the mounting base plate is also provided with three sets of second positioning posts, all three sets of second positioning posts are located on the other side of the first positioning ring.

[0009] In a preferred embodiment, the second grinding wheel body has four sets of first positioning slots corresponding to the four sets of first positioning posts, and the first grinding wheel body has four sets of first positioning grooves corresponding to the four sets of first positioning posts. The four sets of first positioning posts pass through the four sets of first positioning slots and are respectively engaged in the four sets of first positioning grooves.

[0010] In a preferred embodiment, three sets of second positioning slots are provided on one side of the third grinding wheel body, and three sets of second positioning slots are provided on one side of the fourth grinding wheel body. The three sets of second positioning pins pass through the three sets of second positioning slots and are respectively engaged in the three sets of second positioning slots. Two sets of fixing holes are provided on the first, second, third, and fourth grinding wheel bodies. Fixing pins are provided in both sets of fixing holes. Removable fixing nuts are provided at both ends of the two sets of fixing pins. All four sets of fixing nuts are in contact with the grinding wheel body assembly.

[0011] In a preferred embodiment, the cooling assembly includes multiple sets of water inlet grooves. Multiple sets of water inlet grooves are correspondingly opened on the side adjacent to the first grinding wheel body and the second grinding wheel body. All sets of water inlet grooves are connected to the connecting hole. A water inlet cavity is opened on the mounting base plate, and all sets of water inlet grooves are connected to the water inlet cavity.

[0012] In a preferred embodiment, the cooling assembly includes multiple sets of return grooves. Multiple sets of return grooves are formed on the side of the third grinding wheel body adjacent to the fourth grinding wheel body. A return cavity is also formed on the mounting base plate. Multiple sets of return grooves are connected to the return cavity. Multiple sets of return grooves are along the axial direction of the grinding wheel body assembly. Multiple sets of water inlet grooves are against the axial direction of the grinding wheel body assembly.

[0013] In a preferred embodiment, the second grinding wheel body and the third grinding wheel body have multiple sets of through cavities, and the multiple sets of return grooves and the multiple sets of water inlet grooves are respectively connected through the multiple sets of through cavities. Each set of through cavities is provided with a sealing kit. The mounting base plate is connected to a first grinding wheel handle on one side near the water inlet cavity and to a second grinding wheel handle on the other side. The first grinding wheel handle has a water inlet channel corresponding to the water inlet cavity, and the second grinding wheel handle has a return channel corresponding to the return cavity.

[0014] In a preferred embodiment, the mounting base plate is further provided with a second positioning ring and a plurality of positioning elements surrounding the second positioning ring on both sides. The first grinding wheel handle and the second grinding wheel handle are respectively provided with a positioning groove and a plurality of third positioning grooves. The two sets of second positioning rings are respectively connected to the two sets of positioning grooves, and the plurality of positioning elements are respectively connected to the plurality of third positioning grooves.

[0015] In a preferred embodiment, the grinding wheel assembly further includes a diamond layer, and the grinding surfaces of the first grinding wheel, the second grinding wheel, the third grinding wheel, and the fourth grinding wheel are all coated with the diamond layer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Through the design of the cooling components, during the grinding process using this grinding wheel, the coolant enters from the water inlet channel on the first grinding wheel shank, and then enters multiple sets of water inlet grooves through the water inlet chamber to cool the interior of the grinding wheel assembly. Multiple sets of through-cavities are specially opened on the second and third grinding wheel bodies, and the return grooves and water inlet grooves are connected through these through-cavities, allowing the coolant in the multiple sets of water inlet grooves to return through the multiple sets of return grooves, return chambers, and return channels. This effective water circulation cooling can promptly absorb the large amount of heat generated by the grinding wheel and the glass surface, solving the problem of uneven distribution of cooling water in traditional grinding wheels. It can remove heat from the inside of the grinding wheel, improving the cooling effect. Sealing kits are also installed in the through-cavities to ensure the coolant's tightness, prevent coolant leakage, and improve the reliability of the grinding wheel.

[0018] 2. Through the design of the connecting components, the grinding wheel body assembly adopts a modular design, consisting of a first grinding wheel body, a second grinding wheel body, a third grinding wheel body, and a fourth grinding wheel body connected sequentially. Each grinding wheel body has a connecting hole at its center, allowing for detachable connection to the mounting base plate via the connecting components. Specifically, it is fixed by connecting parts such as positioning rings, positioning pins, and positioning grooves, achieving a firm connection between multiple grinding wheel bodies. This makes the assembly and disassembly of the grinding wheel more convenient, facilitating maintenance and replacement by operators. Furthermore, when a single grinding wheel body module is severely worn, that module can be replaced individually without replacing the entire grinding wheel, extending the service life of the grinding wheel and improving its stability.

[0019] 3. By adding a diamond layer, the grinding surface of the grinding wheel assembly is coated with a layer of diamond material. Diamond is extremely hard, which significantly improves the sharpness and wear resistance of the grinding wheel, effectively increasing its grinding efficiency and precision, thus better meeting the processing requirements of photovoltaic glass. Using a diamond grinding wheel can complete the grinding process of photovoltaic glass in a shorter time. At the same time, compared with traditional grinding wheels, diamond causes less damage to the glass surface, which is more conducive to ensuring product quality and providing a more reliable tool for the processing of photovoltaic glass. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembled structure of the grinding wheel for photovoltaic glass of the present invention;

[0021] Figure 2 This is a schematic diagram of the unfolded structure of the grinding wheel for photovoltaic glass of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembled structure of the connecting components in the grinding wheel for photovoltaic glass of the present invention;

[0023] Figure 4 This is a schematic diagram of the disassembled connecting component in the grinding wheel for photovoltaic glass of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the third and fourth grinding wheel bodies after separation in the photovoltaic glass grinding wheel of the present invention;

[0025] Figure 6 This is a schematic diagram of the assembled cooling component in the grinding wheel for photovoltaic glass of the present invention;

[0026] Figure 7 yes Figure 6 A schematic diagram of the disassembled structure;

[0027] Figure 8 This is a schematic diagram of the structure of the photovoltaic glass grinding wheel after the mounting base disk, the first grinding wheel shank, and the second grinding wheel shank are assembled.

[0028] Figure 9 yes Figure 8 A schematic diagram of the disassembled structure.

[0029] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0030] 11. Mounting base plate; 12. First grinding wheel body; 13. Second grinding wheel body; 14. Third grinding wheel body; 15. Fourth grinding wheel body; 16. Connecting hole; 17. Diamond layer; 21. First positioning ring; 22. Positioning ring groove; 23. First positioning post; 24. Second positioning post; 25. First positioning through groove; 26. First positioning groove; 27. Second positioning through groove; 28. Second positioning groove; 29. ​​Fixing hole; 30. Fixing shaft pin; 31. Fixing nut; 41. Water inlet groove; 42. Water inlet cavity; 43. Return groove; 44. Return cavity; 45. First grinding wheel shank; 46. Second grinding wheel shank; 47. Water inlet channel; 48. Return channel; 49. Through cavity; 50. Sealing kit; 51. Second positioning ring; 52. Positioning component; 53. Positioning groove; 54. Third positioning groove. Detailed Implementation

[0031] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but should not be used to limit the scope of protection of the present invention.

[0032] Example:

[0033] As attached Figures 1 to 9 As shown:

[0034] This invention provides a grinding wheel for photovoltaic glass grinding. The grinding wheel includes a mounting base disk 11 and a grinding wheel body assembly. The grinding wheel body assembly is composed of four modules connected sequentially: a first grinding wheel body 12, a second grinding wheel body 13, a third grinding wheel body 14, and a fourth grinding wheel body 15. Each grinding wheel body module has a connection hole 16 at its center. The mounting base disk 11 is detachably connected to the four sets of connection holes 16 through the connection assembly. This modular design makes the entire grinding wheel more compact and facilitates the disassembly, assembly, replacement, and maintenance of individual grinding wheel bodies. The grinding wheel body assembly also includes a cooling component, which allows coolant to circulate inside the grinding wheel body. During the grinding process, the coolant enters the grinding wheel body, cooling the grinding wheel body and the glass sheet to prevent damage caused by high temperatures.

[0035] Please refer to, for example Figure 3 , Figure 4 and Figure 5As shown, the connecting assembly includes a first positioning ring 21, which is installed on the outer surface of the mounting base plate 11 and serves to initially position the grinding wheel assembly. On the adjacent sides of the second grinding wheel 13 and the third grinding wheel 14, two positioning ring grooves 22 are formed corresponding to the position of the first positioning ring 21. The positioning ring grooves 22 are circular grooves with a depth matching the outer diameter of the first positioning ring 21. These two positioning ring grooves 22 are respectively formed on the adjacent sides of the second grinding wheel 13 and the third grinding wheel 14 and can be fitted and connected with the first positioning ring 21. When the grinding wheel assembly is installed onto the mounting base plate 11, the first positioning ring 21 will first embed into the two positioning ring grooves 22, achieving initial positioning of the second grinding wheel 13 and the third grinding wheel 14 relative to the mounting base plate 11. Using a simple circular fit for initial positioning allows for quick and accurate installation of the grinding wheel assembly onto the mounting base plate 11, while also serving as a limit, facilitating more precise positioning and connection later.

[0036] Please refer to, for example Figure 3 and Figure 4 As shown, the connecting assembly also includes four sets of first positioning posts 23 and four sets of second positioning posts 24 for more precise positioning. There are four sets of first positioning posts 23, which are respectively set at four positions on the outer surface of the mounting base plate 11. All four sets of first positioning posts 23 are located on one side of the first positioning ring 21. There are three sets of second positioning posts 24, which are respectively set at three positions on the outer surface of the mounting base plate 11. All three sets of second positioning posts 24 are located on the other side of the first positioning ring 21.

[0037] Please refer to, for example Figure 2 , Figure 4 and Figure 5 As shown, the second grinding wheel body 13 corresponds to the position of the four sets of first positioning pins 23, and has four sets of first positioning through slots 25 on its surface, allowing the first positioning pins 23 to pass through; the first grinding wheel body 12 also corresponds to the position of the four sets of first positioning pins 23, but instead of through slots, it has four sets of closed first positioning slots 26; after the initial positioning is completed, the four sets of first positioning pins 23 pass through the four sets of first positioning through slots 25 of the second grinding wheel body 13 and enter the four sets of first positioning slots 26 corresponding to the first grinding wheel body 12.

[0038] Please refer to, for example Figure 4 and Figure 5As shown, the third grinding wheel body 14 has three sets of second positioning through grooves 27 on one side to achieve positioning function. Correspondingly, the fourth grinding wheel body 15 also has three sets of second positioning grooves 28 on its opposite side. The positions of the three sets of second positioning grooves 28 correspond to the three sets of second positioning through grooves 27 of the third grinding wheel body 14. During installation, the three sets of second positioning pins 24 are first inserted into the three sets of second positioning through grooves 27 corresponding to the third grinding wheel body 14. Then, the second positioning pins 24 are pushed inward so that they pass through the second positioning through grooves 27 and enter the three sets of second positioning grooves 28 corresponding to the fourth grinding wheel body 15. At this time, the three sets of second positioning pins 24 are respectively engaged in the three sets of second positioning grooves 28 of the fourth grinding wheel body 15, realizing the initial positioning of the third grinding wheel body 14 and the fourth grinding wheel body 15.

[0039] The first grinding wheel body 12, the second grinding wheel body 13, the third grinding wheel body 14, and the fourth grinding wheel body 15 each have two sets of fixing holes 29 at corresponding positions. Each of the two sets of fixing holes 29 has a fixing pin 30. The fixing pin 30 passes through the fixing hole 29 and passes through the corresponding grinding wheel body assembly. Both ends of the fixing pin 30 have detachable fixing nuts 31. When all four sets of fixing nuts 31 are tightened, the four grinding wheel bodies are fixedly connected as a whole through the fixing pins 30 and fixing nuts 31. Since the fixing pins 30 and fixing nuts 31 are detachably connected, when individual grinding wheel body modules are severely worn, the fixing nuts 31 can be removed and the fixing pins 30 can be taken out to replace the individual grinding wheel body module without replacing the entire multi-grinding wheel.

[0040] Please refer to, for example Figure 2 , Figure 7 and Figure 8 As shown, the cooling assembly mainly includes multiple water inlet grooves 41 and a water inlet cavity 42. The multiple water inlet grooves 41 are respectively located on the adjacent side of the first grinding wheel body 12 and the second grinding wheel body 13, and are connected to the water inlet cavity 42 through the connecting hole 16. A water inlet cavity 42 is opened inside the mounting base plate 11. The water inlet cavity 42 serves as the distribution node of the cooling assembly, and can evenly distribute the coolant to each water inlet groove 41. When the grinding wheel body assembly is running at high speed, the high temperature will be conducted from the surface of the grinding wheel body to the interior. At this time, the coolant will enter each water inlet groove 41 from the water inlet cavity 42 through the connecting hole 16. Through the even distribution of multiple sets of water inlet grooves 41, the temperature inside the grinding wheel body is effectively reduced, preventing wear or failure caused by overheating. This solves the problem of uneven distribution of cooling water in traditional grinding wheels, realizes comprehensive and uniform cooling of the grinding wheel body assembly, and improves the service life of the grinding wheel.

[0041] Please refer to, for example Figure 6 and Figure 7As shown, the cooling assembly also includes multiple sets of return channels 43, which are located on the adjacent side of the third grinding wheel body 14 and the fourth grinding wheel body 15. These return channels 43 can recover the coolant that enters the grinding wheel body from the water inlet 41. When the coolant flows from the water inlet 41 through the internal channel of the grinding wheel body, its temperature has increased and it no longer has a good cooling effect. At this time, the coolant will flow from the inside of the grinding wheel body into the multiple sets of return channels 43. Although the temperature of the coolant in the return channels 43 has increased, it can still have a certain cooling effect on the third grinding wheel body 14 and the fourth grinding wheel body 15. At the same time, the coolant will also flow into the return cavity 44 inside the mounting base plate 11 through the return channels 43. The return cavity 44 serves as a recovery node, which can collect the coolant recovered from each return channel 43. Afterward, the coolant can be recycled through other equipment to achieve resource reuse.

[0042] Multiple sets of return channels 43 are arranged along the axial direction of the grinding wheel assembly. When the grinding wheel assembly is rotated at high speed, the coolant molecules are subjected to centrifugal force, which pushes the coolant in the return channel 43 outward, causing the coolant in the return channel 43 to flow from the near-axis end to the far-axis end. By using centrifugal force to drive the axial flow of the coolant, the coolant in the return channel 43 can be recycled more quickly, improving the cooling efficiency of the grinding wheel assembly.

[0043] Please refer to, for example Figure 7 As shown, the second grinding wheel body 13 and the third grinding wheel body 14 have multiple sets of through cavities 49. Multiple return channels 43 and water inlet channels 41 are connected through these through cavities 49. Specifically, each return channel 43 and water inlet channel 41 are connected together through a corresponding through cavity 49. In this way, the coolant that has completed its cooling effect in the multiple sets of water inlet channels 41 can flow into the return channels 43 arranged in the opposite axial direction through their respective through cavities 49, realizing efficient circulation of coolant and effectively improving the overall cooling efficiency of the grinding wheel body. Sealing kits 50 are installed in each of the multiple sets of through cavities 49. The sealing kits 50 are usually made of elastic sealing material. They can fit tightly against the inner wall of the through cavity 49 at the inlet and outlet of the through cavity 49. On the one hand, it ensures that the coolant can flow smoothly through the through cavity 49. On the other hand, due to the elasticity of the sealing kits 50, it can form a complete sealing interface inside and outside the through cavity 49, effectively preventing the coolant from leaking during the flow.

[0044] A first grinding wheel shank 45 is connected to one side of the mounting base plate 11 near the water inlet chamber 42, and a second grinding wheel shank 46 is connected to the other side. The first grinding wheel shank 45 and the second grinding wheel shank 46 are respectively connected to the drive device on the processing equipment. In this way, when the processing equipment is started, the grinding wheel can be driven to rotate at high speed through the first grinding wheel shank 45 and the second grinding wheel shank 46 to complete the grinding function. The first grinding wheel shank 45 has a dedicated water inlet channel 47 corresponding to the water inlet chamber 42, which cools the grinding wheel during operation. The coolant is injected directly into the inlet chamber 42 from the first grinding wheel shank 45 through the inlet channel 47. In addition to introducing coolant for heat dissipation, the cooling assembly also needs to effectively discharge the heated coolant. For this reason, the second grinding wheel shank 46 is designed to correspond to the first grinding wheel shank 45. The interior of the second grinding wheel shank 46 is provided with a special return channel 48 facing the return chamber 44 in the mounting base plate 11. The return channel 48 is connected to the return chamber 44 and is responsible for collecting the hot coolant after the grinding wheel has been used.

[0045] Please refer to, for example Figure 8 and Figure 9 As shown, a second positioning ring 51 is provided on each side of the mounting base plate 11. Multiple sets of positioning components 52 are arranged around the second positioning ring 51. Correspondingly, positioning grooves 53 are provided inside the first grinding wheel shank 45 and the second grinding wheel shank 46. In addition, they are provided with multiple sets of third positioning grooves 54. During assembly, the two sets of second positioning rings 51 are connected to the positioning grooves 53 inside the first grinding wheel shank 45 and the second grinding wheel shank 46, respectively. At the same time, the multiple sets of positioning components 52 are also fitted and connected to the multiple sets of third positioning grooves 54 on the first grinding wheel shank 45 and the second grinding wheel shank 46, which not only ensures the stable installation of the first grinding wheel shank 45 and the second grinding wheel shank 46, but also prevents them from rotating relative to each other.

[0046] Please refer to, for example Figure 1 and Figure 2 As shown, the grinding wheel assembly also includes a diamond layer 17, which is uniformly distributed on the grinding surfaces of the first grinding wheel 12, the second grinding wheel 13, the third grinding wheel 14, and the fourth grinding wheel 15. The diamond layer 17 has a hardness exceeding that of other common abrasive materials, allowing it to maintain a sharp state for a longer period during grinding. Simultaneously, due to its high hardness, it is also more wear-resistant, extending the service life of the grinding wheel. Furthermore, using the diamond layer 17 as the grinding surface enables the precision grinding of photovoltaic glass to be completed in a relatively short time. Grinding efficiency and accuracy are thus improved.

[0047] The specific usage and function of this embodiment: The grinding wheel is composed of a mounting base disk 11 and a detachable grinding wheel body assembly. The grinding wheel body assembly is composed of four modules connected in sequence: a first grinding wheel body 12, a second grinding wheel body 13, a third grinding wheel body 14, and a fourth grinding wheel body 15. Each grinding wheel body module has a connection hole 16 at its center. Through the connection assembly, the four grinding wheel body modules are detachably connected to the mounting base disk 11, making the entire grinding wheel structure more compact.

[0048] During the grinding process, the operator places the photovoltaic glass sheet on the grinding wheel assembly. The grinding wheel assembly rotates to grind the glass sheet. The grinding wheel assembly is equipped with a water inlet groove 41 and a return groove 43. Water enters the water inlet groove 41 from the water inlet chamber 42 and forms a circulation inside the grinding wheel, effectively cooling the grinding wheel and the glass surface and preventing overheating. At the same time, the cooling water in the water inlet groove 41 enters the return groove 43 through the passage cavity 49, and then enters the return cavity 44 to return. This solves the problem of insufficient cooling effect caused by traditional grinding wheels that only cool the surface of the grinding wheel. The grinding surface of the grinding wheel assembly is coated with a diamond layer 17, which has extremely high hardness and grinding efficiency. Furthermore, if a single grinding wheel is severely worn, only that module needs to be disassembled and replaced with a new module, without replacing the entire grinding wheel, thus extending its service life.

[0049] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A grinding wheel for photovoltaic glass, characterized in that: The assembly includes a mounting base plate (11) and a grinding wheel assembly. The grinding wheel assembly is mounted on the mounting base plate (11). The grinding wheel assembly includes a first grinding wheel (12), a second grinding wheel (13), a third grinding wheel (14), and a fourth grinding wheel (15) connected in sequence. A connecting hole (16) is provided at the center of one side of each of the first grinding wheel (12), the second grinding wheel (13), the third grinding wheel (14), and the fourth grinding wheel (15). The mounting base plate (11) is detachably connected to the four sets of connecting holes (16) through a connecting assembly. A cooling assembly is also provided inside the grinding wheel assembly. The cooling assembly includes multiple sets of water inlet grooves (41). Multiple sets of water inlet grooves (41) are opened on the side adjacent to the first grinding wheel body (12) and the second grinding wheel body (13). Multiple sets of water inlet grooves (41) are connected to the connecting hole (16). A water inlet cavity (42) is opened on the mounting base plate (11). Multiple sets of water inlet grooves (41) are connected to the water inlet cavity (42). The cooling assembly includes multiple sets of return grooves (43). Multiple sets of return grooves (43) are opened on the side of the third grinding wheel body (14) adjacent to the fourth grinding wheel body (15). A return cavity (44) is also opened on the mounting base plate (11). Multiple sets of return grooves (43) are connected to the return cavity (44). Multiple sets of return grooves (43) are along the axial direction of the grinding wheel body assembly. Multiple sets of water inlet grooves (41) are opposite to the axial direction of the grinding wheel body assembly. The second grinding wheel body (13) and the third grinding wheel body (14) have multiple sets of through cavities (49), and the multiple sets of return grooves (43) and the multiple sets of water inlet grooves (41) are respectively connected through the multiple sets of through cavities (49).

2. The grinding wheel for photovoltaic glass according to claim 1, characterized in that: The connecting component includes a first positioning ring (21), the outer surface of the mounting base plate (11) is provided with the first positioning ring (21), the second grinding wheel body (13) and the third grinding wheel body (14) are adjacent to the first positioning ring (21) and a positioning ring groove (22) is opened on the side corresponding to the first positioning ring (21), and both sets of positioning ring grooves (22) are connected to the first positioning ring (21).

3. The grinding wheel for photovoltaic glass according to claim 2, characterized in that: The connecting assembly also includes four sets of first positioning posts (23). The outer surface of the mounting base plate (11) is provided with four sets of first positioning posts (23). All four sets of first positioning posts (23) are located on one side of the first positioning ring (21). The outer surface of the mounting base plate (11) is also provided with three sets of second positioning posts (24). All three sets of second positioning posts (24) are located on the other side of the first positioning ring (21).

4. The grinding wheel for photovoltaic glass according to claim 3, characterized in that: The second grinding wheel body (13) has four sets of first positioning through slots (25) corresponding to the four sets of first positioning pins (23), and the first grinding wheel body (12) has four sets of first positioning grooves (26) corresponding to the four sets of first positioning pins (23). The four sets of first positioning pins (23) pass through the four sets of first positioning through slots (25) and are respectively locked in the four sets of first positioning grooves (26).

5. The grinding wheel for photovoltaic glass according to claim 4, characterized in that: The third grinding wheel body (14) has three sets of second positioning through grooves (27) on one side, and the fourth grinding wheel body (15) has three sets of second positioning grooves (28) on one side. The three sets of second positioning pins (24) pass through the three sets of second positioning through grooves (27) and are respectively locked in the three sets of second positioning grooves (28). The first grinding wheel body (12), the second grinding wheel body (13), the third grinding wheel body (14) and the fourth grinding wheel body (15) each have two sets of fixing holes (29). Fixing pins (30) pass through the two sets of fixing holes (29). Removable fixing nuts (31) are provided at both ends of the two sets of fixing pins (30). The four sets of fixing nuts (31) are in contact with the grinding wheel body assembly.

6. The grinding wheel for photovoltaic glass according to claim 1, characterized in that: Each of the multiple through cavities (49) is fitted with a sealing kit (50); the mounting base plate (11) is connected to a first grinding wheel handle (45) on one side near the water inlet cavity (42) and to a second grinding wheel handle (46) on the other side; the first grinding wheel handle (45) is provided with a water inlet channel (47) corresponding to the water inlet cavity (42), and the second grinding wheel handle (46) is provided with a return channel (48) corresponding to the return cavity (44).

7. The grinding wheel for photovoltaic glass according to claim 6, characterized in that: The mounting base plate (11) is also provided with a second positioning ring (51) and a plurality of positioning elements (52) surrounding the second positioning ring (51) on both sides. The first grinding wheel handle (45) and the second grinding wheel handle (46) are respectively provided with positioning grooves (53) and a plurality of third positioning grooves (54). The two sets of second positioning rings (51) are respectively connected to the two sets of positioning grooves (53), and the plurality of positioning elements (52) are respectively connected to the plurality of third positioning grooves (54).

8. The grinding wheel for photovoltaic glass according to claim 1, characterized in that: The grinding wheel assembly also includes a diamond layer (17), and the grinding surfaces of the first grinding wheel (12), the second grinding wheel (13), the third grinding wheel (14) and the fourth grinding wheel (15) are all coated with the diamond layer (17).

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