Novel graphite waterproof device

Abstract

The utility model discloses a novel graphite waterproof device which comprises an outer bearing seat, an outer bearing is installed in the outer bearing seat, an inner bearing seat is installed in the outer bearing, an eccentric hole is formed in the inner bearing seat, an inner bearing is installed in the eccentric hole, a driven shaft is installed in the inner bearing, and a first outer graphite ring is installed on the inner side of the end, away from a coupler, of the outer bearing seat. The first outer graphite ring is tightly attached to the outer side of the inner bearing seat, a second outer graphite ring is installed on the inner side of the end, away from the coupler, of the inner bearing seat, and the second outer graphite ring is tightly attached to the outer side of the driven shaft. The structural design of the outer graphite rings is adopted, compressed air reaches the first outer graphite ring along the first air groove, the second air groove and the third air groove, and when the driving motor drives the inner bearing seat to rotate at a high speed through the outer bearing, the whole device can be continuously heated; and the inner bearing seat is more and more tightly attached to the first outer graphite ring under the thermal expansion effect of high temperature, so that a good air-tight sealing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of polishing and grinding technology, specifically to a novel graphite waterproof device. Background Technology

[0002] Polishing and grinding machines are devices used to treat the surface of workpieces to improve their smoothness, flatness, and aesthetics. They are widely used in various industries such as machinery manufacturing, automobiles, furniture, and electronics. When polishing and grinding metal materials at high speed, the friction between the grinding tool and the metal surface generates a large amount of heat. Excessive heat can not only alter the metallographic structure of the metal, leading to a decline in material properties such as reduced hardness and toughness, but it can also damage the grinding tool and shorten its lifespan. Therefore, water is needed during the grinding process to lower the temperature of the grinding area, ensuring the performance of the metal material and the normal use of the grinding tool. However, existing polishing and grinding machines have poor sealing between the grinding head and bearing housing, allowing water to easily seep into the interior through the gaps, causing corrosion and resulting in poor waterproofing. Utility Model Content

[0003] The purpose of this invention is to provide a novel graphite waterproofing device to address the shortcomings of existing technologies and solve the problems mentioned in the background art.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A novel graphite waterproofing device includes an outer bearing housing, an outer bearing installed inside the outer bearing housing, a coupling connected to the inner ring surface of one end of the outer bearing, an inner bearing housing installed inside the outer bearing, an eccentric hole provided in the inner bearing housing, an inner bearing installed within the eccentric hole, a driven shaft installed inside the inner bearing, a first outer graphite ring installed on the inner side of the outer bearing housing away from the coupling, the first outer graphite ring being tightly fitted to the outer side of the inner bearing housing, and a second outer graphite ring installed on the inner side of the inner bearing housing away from the coupling, the second outer graphite ring being tightly fitted to the outer side of the driven shaft.

[0006] As a preferred embodiment of the novel graphite waterproofing device, a first outer ring cover is installed on the outer ring surface of the outer bearing near the coupling. The outer wall of the first outer ring cover abuts against the inner wall of the outer bearing seat, and the upper surface of the first outer ring cover is fixedly connected to the outer bearing seat by a number of first fasteners. The first fasteners are distributed at intervals along the circumference of the first outer ring cover.

[0007] As a preferred embodiment of the novel graphite waterproofing device, the first outer ring cap has a through hole corresponding to the position of the coupling. The coupling passes through the through hole and is connected to the output shaft of the drive motor. A first air groove communicating with the through hole is opened on one side of the first outer ring cap. A second air groove is opened on one side of the inner wall between the outer bearing seat and the outer bearing. A third air groove is opened on the bottom inner wall between the outer bearing seat and the outer bearing. The first air groove is connected to the second and third air grooves in sequence. The first outer graphite ring is located below the third air groove.

[0008] As a preferred embodiment of the novel graphite waterproofing device, the coupling has an air hole that communicates with the through hole, a fourth air groove is provided on one side of the inner wall between the inner bearing seat and the inner bearing, and a fifth air groove is provided on the bottom inner wall between the inner bearing seat and the inner bearing. The air hole is connected to the fourth air groove and the fifth air groove in sequence, and the second outer graphite ring is located below the fifth air groove.

[0009] As a preferred embodiment of the novel graphite waterproofing device, a first sealing ring is installed on the inner wall between the outer bearing housing and the first outer ring cover, and a second sealing ring is installed on the first outer ring cover above the first fastener.

[0010] As a preferred embodiment of the novel graphite waterproofing device, an inner ring cover is installed on the inner ring surface of the inner bearing near the coupling, and the inner ring cover is fixedly connected to the driven shaft by a second fastener.

[0011] As a preferred embodiment of the novel graphite waterproofing device, a second outer ring cover is installed on the outer ring surface of the inner bearing near the inner ring cover, and the second outer ring cover abuts against the inner wall of the inner bearing seat.

[0012] As a preferred embodiment of the novel graphite waterproofing device, a third sealing ring is installed on the outer ring of the first outer graphite ring.

[0013] As a preferred embodiment of the novel graphite waterproofing device, a graphite ring cap is installed on the outer surface of the first outer graphite ring, and the graphite ring cap is fixedly connected to the outer bearing seat by a third fastener.

[0014] As a preferred embodiment of the novel graphite waterproofing device, both the outer bearing and the inner bearing are deep groove ball bearings.

[0015] The beneficial effects of this utility model are:

[0016] This utility model adopts an outer graphite ring structure design. Since compressed air can enter through the through hole of the first outer ring cover, the compressed air reaches the first outer graphite ring along the first air groove, the second air groove and the third air groove. When the drive motor drives the inner bearing seat to rotate at high speed through the coupling and the outer bearing, the entire device will continue to heat up. Since the thermal expansion coefficient of graphite is smaller than that of iron inner bearing seat, the inner bearing seat will be more and more tightly attached to the first outer graphite ring under the thermal expansion of high temperature. Only under the action of mutual friction will the contact surface leave a very small gap, thereby achieving a good air sealing effect.

[0017] Similarly, compressed air will also reach the second outer graphite ring along the air hole, the fourth air groove and the fifth air groove. Under the thermal expansion of the driven shaft at high temperature, it will get closer and closer to the second outer graphite ring, which can also achieve a good air seal effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the novel graphite waterproof device described in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the outer bearing housing and the outer bearing described in this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the inner bearing housing, inner bearing, and driven shaft described in this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the first air groove, the second air groove, and the third air groove described in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the fourth and fifth air slots described in this utility model.

[0024] In the picture:

[0025] 1. Outer bearing housing; 2. Outer bearing; 3. Coupling; 4. Inner bearing housing; 5. Inner bearing; 6. Driven shaft; 7. First outer graphite ring; 8. Second outer graphite ring; 9. First outer ring cover; 10. First fastener; 11. First sealing ring; 12. Second sealing ring; 13. Inner ring cover; 14. Second fastener; 15. Second outer ring cover; 16. Third sealing ring; 17. Graphite ring cover; 18. Third fastener; 19. First air groove; 20. Second air groove; 21. Third air groove; 22. Air hole; 23. Fourth air groove; 24. Fifth air groove. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figures 1 to 3As shown, this utility model provides a novel graphite waterproof device, including an outer bearing housing 1, an outer bearing 2 installed inside the outer bearing housing 1, a coupling 3 connected to the inner ring surface of one end of the outer bearing 2, the coupling 3 being connected to the output shaft of a drive motor, an inner bearing housing 4 installed inside the outer bearing 2, the inner bearing housing 4 having an eccentric hole, an inner bearing 5 installed inside the eccentric hole, a driven shaft 6 installed inside the inner bearing 5, a first outer graphite ring 7 installed on the inner side of the outer bearing housing 1 away from the coupling 3, the first outer graphite ring 7 being tightly fitted to the outer side of the inner bearing housing 4, and a second outer graphite ring 8 installed on the inner side of the inner bearing housing 4 away from the coupling 3. The outer graphite ring 8 is tightly fitted to the outer side of the driven shaft 6. When the drive motor is working, the output shaft of the drive motor will drive the coupling 3 and the outer bearing 2 to rotate. The outer bearing 2 drives the inner bearing seat 4 to rotate synchronously. The inner bearing seat 4 drives the outer ring of the inner bearing 5 to rotate. Since the outer bearing 2 and the inner bearing 5 in this embodiment are preferably deep groove ball bearings, and the inner bearing seat 4 is eccentrically set, when the inner bearing seat 4 rotates and drives the outer ring of the inner bearing 5 to rotate, the rolling elements inside the inner bearing 5 begin to roll under the action of friction between the inner and outer rings, thereby driving the inner ring of the inner bearing 5 to rotate. Finally, the inner ring of the inner bearing 5 drives the driven shaft 6 to rotate.

[0031] Specifically, in this embodiment, a first outer ring cover 9 is installed on the outer ring surface of the outer bearing 2 near the coupling 3. The outer wall of the first outer ring cover 9 abuts against the inner wall of the outer bearing seat 1, and the upper surface of the first outer ring cover 9 is fixedly connected to the outer bearing seat 1 by a number of first fasteners 10. The first fasteners 10 are distributed at intervals along the circumference of the first outer ring cover 9. In this embodiment, the first fasteners 10 are preferably screws. Both the first outer ring cover 9 and the outer bearing seat 1 are provided with screw holes. The screws are screwed into the screw holes to fix the first outer ring cover 9 on the outer bearing seat 1.

[0032] like Figure 4As shown, in this embodiment, the first outer ring cap 9 has a through hole corresponding to the position of the coupling 3. A first air groove 19 communicating with the through hole is provided on one side of the first outer ring cap 9. A second air groove 20 is provided on one side of the inner wall between the outer bearing seat 1 and the outer bearing 2, and a third air groove 21 is provided on the bottom inner wall between the outer bearing seat 1 and the outer bearing 2. The first air groove 19 is sequentially connected to the second air groove 20 and the third air groove 21. The first outer graphite ring 7 is located below the third air groove 21. Due to the compression air in the through hole of the first outer ring cap 9... As air enters, compressed air will travel along the first air groove 19, the second air groove 20, and the third air groove 21 to the first outer graphite ring 7. When the drive motor drives the inner bearing seat 4 to rotate at high speed through the coupling 3 and the outer bearing 2, the entire device will continue to heat up. Since the coefficient of thermal expansion of graphite is less than that of the iron inner bearing seat 4, the inner bearing seat 4 will become increasingly tighter with the first outer graphite ring 7 under the action of thermal expansion at high temperature. Only under the action of mutual friction during rotation will there be a very small gap on the contact surface, thereby achieving a good air sealing effect.

[0033] like Figure 5 As shown, the coupling 3 in this embodiment has an air hole 22 that communicates with the through hole. A fourth air groove 23 is provided on one side of the inner wall between the inner bearing seat 4 and the inner bearing 5, and a fifth air groove 24 is provided on the bottom inner wall between the inner bearing seat 4 and the inner bearing 5. The air hole 22 is connected to the fourth air groove 23 and the fifth air groove 24 in sequence. The second outer graphite ring 8 is located below the fifth air groove 24. Compressed air will also reach the second outer graphite ring 8 along the air hole 22, the fourth air groove 23 and the fifth air groove 24. Under the thermal expansion at high temperature, the driven shaft 6 gets closer and closer to the second outer graphite ring 8, which can also achieve a good air sealing effect.

[0034] Preferably, in this embodiment, a first sealing ring 11 is installed on the inner wall between the outer bearing housing 1 and the first outer ring cover 9, and a second sealing ring 12 is installed on the first outer ring cover 9 above the first fastener 10. The first sealing ring 11 and the second sealing ring 12 can effectively prevent water from flowing in from the gap between the first outer ring cover 9 and the outer bearing housing 1.

[0035] Specifically, in this embodiment, an inner ring cover 13 is installed on the inner ring surface of the inner bearing 5 near the coupling 3. The inner ring cover 13 is fixedly connected to the driven shaft 6 by a second fastener 14. The second fastener 14 is preferably a screw. Both the inner ring cover 13 and the driven shaft 6 have screw holes. The screw is screwed into the screw hole to fix the inner ring cover 13 on the driven shaft 6. At the same time, a second outer ring cover 15 is installed on the outer ring surface of the inner bearing 5 near the inner ring cover 13. The second outer ring cover 15 abuts against the inner wall of the inner bearing seat 4.

[0036] Preferably, in this embodiment, the outer ring of the first outer graphite ring 7 is equipped with a third sealing ring 16. The third sealing ring 16 can keep the outer bearing 2 sealed from the outside while preventing the first outer graphite ring 7 from vibrating. A graphite ring cover 17 is installed on the outer surface of the first outer graphite ring 7. The graphite ring cover 17 can press the first outer graphite ring 7 tightly. The graphite ring cover 17 is fixedly connected to the outer bearing seat 1 by a third fastener 18. The third fastener 18 is preferably a screw. The graphite ring cover 17 and the outer bearing seat 1 are provided with screw holes. The screw is screwed into the screw hole to fix the graphite ring cover 17 on the outer bearing seat 1.

[0037] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. A novel graphite waterproofing device, characterized in that, The system includes an outer bearing housing (1), an outer bearing (2) installed inside the outer bearing housing (1), a coupling (3) connected to the inner ring surface of one end of the outer bearing (2), an inner bearing housing (4) installed inside the outer bearing (2), an eccentric hole provided in the inner bearing housing (4), an inner bearing (5) installed inside the eccentric hole, a driven shaft (6) installed inside the inner bearing (5), a first outer graphite ring (7) installed on the inner side of the outer bearing housing (1) away from the coupling (3), the first outer graphite ring (7) being tightly fitted to the outer side of the inner bearing housing (4), and a second outer graphite ring (8) installed on the inner side of the inner bearing housing (4) away from the coupling (3), the second outer graphite ring (8) being tightly fitted to the outer side of the driven shaft (6).

2. The novel graphite waterproofing device according to claim 1, characterized in that, The outer bearing (2) near the coupling (3) has a first outer ring cover (9) installed on its outer ring surface. The outer wall of the first outer ring cover (9) abuts against the inner wall of the outer bearing seat (1). The upper surface of the first outer ring cover (9) is fixedly connected to the outer bearing seat (1) by a number of first fasteners (10). The first fasteners (10) are distributed at intervals along the circumferential direction of the first outer ring cover (9).

3. The novel graphite waterproofing device according to claim 2, characterized in that, The first outer ring cap (9) has a through hole corresponding to the position of the coupling (3). The coupling (3) passes through the through hole and is connected to the output shaft of the drive motor. A first air groove (19) communicating with the through hole is opened on one side of the first outer ring cap (9). A second air groove (20) is opened on one side of the inner wall between the outer bearing seat (1) and the outer bearing (2). A third air groove (21) is opened on the bottom inner wall between the outer bearing seat (1) and the outer bearing (2). The first air groove (19) is connected to the second air groove (20) and the third air groove (21) in sequence. The first outer graphite ring (7) is located below the third air groove (21).

4. The novel graphite waterproofing device according to claim 3, characterized in that, The coupling (3) has an air hole (22) that communicates with the through hole. A fourth air groove (23) is provided on one side of the inner wall between the inner bearing seat (4) and the inner bearing (5), and a fifth air groove (24) is provided on the bottom inner wall between the inner bearing seat (4) and the inner bearing (5). The air hole (22) is connected to the fourth air groove (23) and the fifth air groove (24) in sequence. The second outer graphite ring (8) is located below the fifth air groove (24).

5. The novel graphite waterproofing device according to claim 2, characterized in that, A first sealing ring (11) is installed on the inner wall between the outer bearing housing (1) and the first outer ring cover (9), and a second sealing ring (12) is installed on the first outer ring cover (9) above the first fastener (10).

6. The novel graphite waterproofing device according to claim 1, characterized in that, An inner ring cover (13) is installed on the inner ring surface of the inner bearing (5) near the coupling (3), and the inner ring cover (13) is fixedly connected to the driven shaft (6) by a second fastener (14).

7. The novel graphite waterproofing device according to claim 6, characterized in that, A second outer ring cap (15) is installed on the outer ring surface of the inner bearing (5) near the inner ring cap (13), and the second outer ring cap (15) abuts against the inner wall of the inner bearing seat (4).

8. The novel graphite waterproofing device according to claim 1, characterized in that, The outer ring of the first outer graphite ring (7) is fitted with a third sealing ring (16).

9. The novel graphite waterproofing device according to claim 1, characterized in that, A graphite ring cap (17) is installed on the outer surface of the first outer graphite ring (7), and the graphite ring cap (17) is fixedly connected to the outer bearing seat (1) by a third fastener (18).

10. The novel graphite waterproofing device according to claim 1, characterized in that, Both the outer bearing (2) and the inner bearing (5) are deep groove ball bearings.

Images