Air-cooled strong heat exchange structure edging wheel

Abstract

This utility model discloses a wind-cooled, high-heat-exchange grinding wheel, comprising: a base, wherein the base is provided with multiple first air inlet channels, the first air inlet channels penetrating the base; a grinding head, the grinding head being fixed to the base, the grinding head being provided with first cooling grooves and airflow channels; multiple first cooling grooves are provided; the multiple first cooling grooves are arranged at intervals around the central axis of the base; the first cooling grooves are connected to the end face of the grinding head away from the base; the two ends of the first cooling grooves are respectively connected to the inner and outer annular surfaces of the grinding head; the airflow channels connect the first cooling grooves and the first air inlet channels. During the rotation of the grinding wheel, hot and cold airflows mix rapidly and flow violently in the first cooling grooves, which can reduce the airflow temperature, thereby achieving a enhanced heat exchange effect.

Description

Technical Field

[0001] This utility model relates to the field of grinding tool technology, and in particular to a wind-cooled, high-heat-exchange structure grinding wheel. Background Technology

[0002] Ceramic tiles used in building materials and decoration are polycrystalline composite materials, with diverse types and complex compositions. They are characterized by wear resistance, high hardness, thinness, brittleness, and poor thermal shock resistance. Their production process includes raw material grinding, molding, low-temperature drying, initial firing and high-temperature sintering, and post-processing. Diamond grinding wheels can be used to grind the edges of ceramic tiles to achieve designed dimensions and precision, making them an indispensable tool in the deep processing of ceramic tiles.

[0003] Wet grinding, using water cooling, is the most widely used tile edge grinding technology. However, with the implementation of national energy conservation and emission reduction policies and the increasing environmental requirements for ceramic production lines, the disadvantages of wet grinding in terms of production line layout, working environment, and energy conservation and emission reduction have become apparent. From ceramic tiles with high water absorption rates of over 10% to porcelain tiles with zero water absorption rates, more and more tile types are adopting dry grinding for deep processing. However, in dry processing, due to the lack of water cooling, the contact area between the diamond grinding head and the tile generates instantaneous high temperatures (up to 500°C or higher), which are difficult to dissipate effectively. This can lead to adverse phenomena such as graphitization of the diamond surface (change in phase structure), softening of the binder due to heat, and cracking of the diamond grinding head, ultimately resulting in problems such as reduced tool grinding ability, shorter service life, and burns on the processed parts.

[0004] Practice has shown that adding graphite pore-forming agents of different forms to the binder can reduce grinding resistance and heat accumulation to some extent by utilizing their lubricity and thermal conductivity. However, the disordered distribution of graphite pore-forming agents will inevitably reduce the mechanical properties of the metal matrix itself, seriously affecting the service life of diamond tools. In addition, optimizing the grinding head structure, such as designing the integral annular grinding head with a toothed groove structure or arranging relatively fast-wearing isolation plates to form heat dissipation grooves, has achieved a certain heat dissipation effect. However, due to the airflow barrier and the semi-enclosed state of the grinding zone, the cooling airflow only stays in the outer circle area of ​​the grinding head and cannot enter and pass through the internal grinding arc area of ​​the grinding head, thus failing to achieve a good cooling effect. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a wind-cooled, high-heat-exchange structure grinding wheel to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0006] The solution to the technical problem of this utility model is: A wind-cooled, high-heat-exchange grinding wheel includes: The substrate is provided with a plurality of first air inlet channels, the first air inlet channels penetrating the substrate; A grinding head, which is fixed to the base body, and is provided with a first cooling groove and an airflow channel; The first cooling groove is provided in multiple ways; the multiple first cooling grooves are arranged at intervals around the central axis of the substrate; the first cooling groove is connected to the end face of the grinding head away from the substrate; the two ends of the first cooling groove are respectively connected to the inner ring surface and the outer ring surface of the grinding head. The airflow channel connects the first cooling tank and the first air inlet channel.

[0007] As a further improvement to the above technical solution, multiple airflow channels are provided, each corresponding to one of the first air inlet channels; the airflow channels include: Several second cooling tanks are connected to the first cooling tank, and the second cooling tanks are connected to the end face of the grinding head away from the base. The second air intake channel is connected at both ends to the first air intake channel and the second cooling tank, respectively.

[0008] As a further improvement to the above technical solution, multiple second cooling tanks are interconnected to form annular grooves.

[0009] As a further improvement to the above technical solution, the grinding head is a diamond head.

[0010] As a further improvement to the above technical solution, the second air inlet channel is offset from the first cooling tank.

[0011] As a further improvement to the above technical solution, the distance from the second air inlet channel to the two adjacent first cooling tanks is equal.

[0012] As a further improvement to the above technical solution, the first cooling tank has a straight groove structure.

[0013] As a further improvement to the above technical solution, the first cooling tank is arranged radially inclined relative to the substrate.

[0014] As a further improvement to the above technical solution, it also includes an air guide plate, which is disposed on the side of the substrate away from the grinding head. The air guide plate is provided with a plurality of air inlet slots, which connect the first air inlet channel and the side wall of the air guide plate.

[0015] As a further improvement to the above technical solution, the rotation direction of the grinding wheel is set as a first direction, and the two ends of the air inlet groove are respectively set as an air inlet and an air outlet, and the air outlet is connected to the first air inlet channel; in the first direction, the air inlet is located in front of the air outlet.

[0016] The beneficial effects of this utility model are as follows: During the use of the grinding wheel, the airflow will flow from the inside of the grinding head to the outside of the grinding head through the first cooling tank. The airflow velocity in the first cooling tank is relatively large. Since the airflow velocity in the first cooling tank is greater than that in the first air inlet channel, a pressure difference is formed between the first cooling tank and the first air inlet channel. This provides power for airflow transport, so that the airflow flows through the first air inlet channel, the airflow channel and the first cooling tank in sequence. After the colder airflow flowing in from the first air inlet channel merges into the first cooling tank, the hot and cold airflows mix rapidly and flow violently in the first cooling tank, which can reduce the airflow temperature and thus achieve the effect of enhanced heat exchange.

[0017] This invention relates to the field of grinding tool technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model; Figure 3 This is a cross-sectional structural schematic diagram of the air guide plate according to an embodiment of the present utility model.

[0020] In the figure, 100 is the substrate; 110 is the first air inlet channel; 200 is the grinding head; 210 is the first cooling tank; 220 is the second cooling tank; 230 is the second air inlet channel; 300 is the air guide plate; and 310 is the air inlet slot. Detailed Implementation

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0022] Reference Figures 1 to 3 A wind-cooled, high-heat-exchange grinding wheel includes: a base 100, a grinding head 200, and a wind guide plate 300.

[0023] Specifically, in this embodiment, the substrate 100 and the grinding head 200 are fixed by sintering.

[0024] In other embodiments, the grinding head 200 can also be fixed to the base 100 by mechanical connection. Conventional screw connection, interference fit, or other methods can be used. Those skilled in the art can select the connection method of the grinding head 200 and the base 100 according to actual needs.

[0025] The substrate 100 is provided with a first air inlet channel 110. The number of first air inlet channels 110 is set to multiple, and the multiple first air inlet channels 110 are arranged equidistantly around the central axis of the substrate 100.

[0026] Specifically, in this embodiment, the grinding head 200 is configured as a diamond head.

[0027] The grinding head 200 has a ring-shaped head structure.

[0028] The grinding head 200 is provided with a cooling groove group, which includes a first cooling groove 210 and a second cooling groove 220.

[0029] The first cooling groove 210 is connected to the end face of the grinding head 200 away from the base 100. Multiple first cooling grooves 210 are provided, arranged equidistantly around the central axis of the base 100. The two ends of the first cooling groove 210 are connected to the inner and outer annular surfaces of the grinding head 200, respectively, so that airflow can pass through the first cooling groove 210 from the inside to the outside of the grinding head 200.

[0030] Specifically, in this embodiment, the first cooling groove 210 is configured as a straight groove structure. This design shortens the airflow path, allowing the airflow to more quickly carry the heat from the grinding head 200 away, thus enhancing the heat exchange effect. In other embodiments, the first cooling groove 210 can also be configured as an arc-shaped groove structure. Those skilled in the art can select the specific structure of the first cooling groove 210 according to actual needs.

[0031] Specifically, in this embodiment, the first cooling groove 210 is arranged radially inclined relative to the base 100.

[0032] The second cooling tank 220 is an annular tank, and the second cooling tank 220 is connected to the first cooling tank 210.

[0033] The second cooling groove 220 is connected to the end face of the grinding head 200 away from the base 100. The second cooling groove 220 passes through a plurality of first cooling grooves 210. Specifically, in this embodiment, the second cooling groove 220 is configured as an annular groove structure. In other embodiments, the second cooling groove 220 may also be configured as a polygonal annular groove structure. Those skilled in the art can select the specific structure of the second cooling groove 220 according to actual needs.

[0034] Specifically, in this embodiment, the number of second cooling tanks 220 is set to one. In other embodiments, the number of second cooling tanks 220 may be set to multiple. If the number of second cooling tanks 220 is set to multiple, the multiple second cooling tanks 220 need to be set as annular structures of different sizes, and the multiple second cooling tanks 220 need to be concentrically arranged. Those skilled in the art can select the number of second cooling tanks 220 according to actual needs.

[0035] The second cooling tank 220 can more effectively dissipate heat from the grinding arc area inside the grinding head 200.

[0036] The grinding head 200 has a second air inlet channel 230, and the two ends of the second air inlet channel 230 are connected to the first air inlet channel 110 and the second cooling tank 220, respectively.

[0037] Specifically, in this embodiment, the second air inlet channel 230 is offset from the first cooling tank 210, and the distance from the second air inlet channel 230 to the two adjacent first cooling tanks 210 is equal, so that the airflow can flow into the two adjacent first cooling tanks 210 evenly.

[0038] The air guide plate 300 is disposed at one end of the base 100 away from the grinding head 200. The air guide plate 300 is fixedly connected to the base 100. Specifically, in this embodiment, the air guide plate 300 and the base 100 are mechanically fixedly connected by screws. In other embodiments, the air guide plate 300 can also be fixed to the base 100 by welding or other means. Those skilled in the art can select the fixing method of the air guide plate 300 and the base 100 according to actual needs.

[0039] The air guide plate 300 has a closed end face away from the substrate 100. The air guide plate 300 has multiple air inlet slots 310, which are equidistantly arranged around the rotation axis of the grinding wheel. Each air inlet slot 310 corresponds to a first air inlet channel 110. The two ends of each air inlet slot 310 are respectively designated as an outlet and an inlet. The inlet end communicates with the outer wall of the air guide plate 300, and the outlet end communicates with the first air inlet channel 110. Air from outside the air guide plate 300 flows into the air guide plate 300 from the inlet end of the air inlet slot 310. The two side walls of the air inlet slot 310 are designated as a first side wall and a second side wall.

[0040] like Figure 3 As shown in the figure, the arc with arrows indicates the rotation direction of the grinding wheel. In the rotation direction of the grinding wheel, the outlet end of the air inlet groove 310 is located in front of the inlet end. The first sidewall is located in front of the second sidewall. Both the first and second sidewalls are inclined towards the front in the first direction. The inclination degree of the first sidewall is greater than that of the second sidewall, so that air can more easily flow from outside the guide plate 300 into the air inlet groove 310 during the rotation of the grinding wheel. Furthermore, grinding wheels are generally used in pairs, with the two grinding wheels rotating in opposite directions. The specific shape of the air inlet groove 310 in this embodiment allows airflow to better flow from the outside into the air inlet groove 310.

[0041] During the use of the grinding wheel, airflow flows from the inside to the outside of the grinding head 200 through the first cooling tank 210. The airflow velocity in the first cooling tank 210 is relatively high. Due to the airflow velocity in the first cooling tank 210 relative to the first air inlet channel 110, a pressure difference is formed between the first cooling tank 210 and the first air inlet channel 110. This provides power for airflow transport, so that the airflow flows through the first air inlet channel 110, the second air inlet channel 230, the second cooling tank 220 and the first cooling tank 210 in sequence. After the cooler airflow flowing in from the first air inlet channel 110 merges into the first cooling tank 210, the hot and cold airflows mix rapidly and flow violently in the first cooling tank 210, which can reduce the airflow temperature and thus achieve the effect of enhanced heat exchange.

[0042] Meanwhile, during the rotation of the grinding wheel, air from the outside of the air guide plate 300 flows in through the air inlet groove 310 and flows sequentially through the first air inlet channel 110, the second air inlet channel 230, the second cooling groove 220, and the first cooling groove 210, thereby effectively increasing the flow rate of the second cooling groove 220 and the first cooling groove 210 to better dissipate heat from the grinding arc area inside the grinding head 200.

[0043] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A wind-cooled, high-heat-exchange grinding wheel, characterized in that: include: The substrate is provided with a plurality of first air inlet channels, the first air inlet channels penetrating the substrate; A grinding head, the grinding head being fixed to the base body; the grinding head is provided with a cooling groove assembly; The cooling tank group includes a first cooling tank and a second cooling tank; The first cooling groove is provided in multiple ways; the multiple first cooling grooves are arranged at intervals around the central axis of the base; the two ends of the first cooling groove are respectively connected to the inner and outer annular surfaces of the grinding head; the second cooling groove is an annular groove, and the second cooling groove is connected to the multiple first cooling grooves; both the first cooling groove and the second cooling groove are connected to the end face of the grinding head away from the base; the second cooling groove is connected to the first air inlet channel.

2. The air-cooled, high-heat-exchange grinding wheel according to claim 1, characterized in that: The grinding head is also provided with a second air inlet channel, and the second cooling tank is connected to the first air inlet channel through the second air inlet channel.

3. The air-cooled, high-heat-exchange grinding wheel according to claim 1, characterized in that: The second cooling groove is a ring-shaped groove.

4. The air-cooled, high-heat-exchange grinding wheel according to claim 2, characterized in that: The grinding head is a diamond head.

5. The air-cooled, high-heat-exchange grinding wheel according to claim 2, characterized in that: The second air inlet channel is offset from the first cooling tank.

6. The air-cooled, high-heat-exchange grinding wheel according to claim 5, characterized in that: The distance from the second air intake channel to the two adjacent first cooling tanks is equal.

7. The air-cooled, high-heat-exchange grinding wheel according to claim 1, characterized in that: The first cooling tank has a straight groove structure.

8. The air-cooled, high-heat-exchange grinding wheel according to claim 7, characterized in that: The first cooling tank is arranged radially inclined relative to the substrate.

9. The air-cooled, high-heat-exchange grinding wheel according to claim 1, characterized in that: It also includes an air guide plate, which is disposed on the side of the substrate away from the grinding head. The air guide plate has multiple air inlet slots that connect the first air inlet channel and the side wall of the air guide plate.

10. The air-cooled, high-heat-exchange grinding wheel according to claim 9, characterized in that: The two ends of the air inlet groove are respectively designated as an air inlet and an air outlet, and the air outlet is connected to the first air inlet channel; in the rotation direction of the grinding wheel, the air inlet is located in front of the air outlet.

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