High-temperature-resistant leakproof double-lip oil seal structure

Abstract

The utility model relates to the technical field of double-lip oil seal structures, and one embodiment of the utility model provides a high-temperature-resistant leakage-proof double-lip oil seal structure which comprises an annular framework and further comprises a mounting ring, a fixing ring, a fastening groove and a mounting mechanism, the mounting ring is fixedly arranged on the inner wall of the framework, and the fixing ring is fixedly arranged on the inner wall of the framework; fixing rings are slidably arranged in the framework and located on the two sides of the fixing rings, a first sealing lip and a second sealing lip are fixedly arranged on the portions, located on the two sides of the mounting ring, of the fixing rings correspondingly, fastening grooves are fixedly formed in the outer walls of the first sealing lip and the second sealing lip correspondingly, and annular springs are arranged in the fastening grooves; the annular spring makes contact with the side wall of the fastening groove, the mounting mechanism is arranged between the mounting ring and the fixing ring and used for mounting and fixing the mounting ring and the fixing ring, and through the technical scheme, the technical problem that in the prior art, a lip is prone to aging due to high temperature, and leakage occurs is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of double-lip oil seal structures, specifically, to a high-temperature resistant and leak-proof double-lip oil seal structure. Background Technology

[0002] In industrial production and machinery manufacturing, oil seals, as key sealing components, are widely used in various rotating equipment, such as engines, gearboxes, and pumps. Their function is to prevent internal lubricating oil leakage while blocking external dust and impurities from entering, ensuring stable operation and high efficiency. Double-lip oil seals, with their design of primary and secondary lips working in tandem, significantly improve sealing reliability and durability compared to single-lip oil seals, playing a crucial role in numerous operating conditions.

[0003] However, with the rapid development of modern industry towards high temperature, high pressure, and high speed, high temperature causes the elastic materials such as rubber used in the oil seal lip to age and harden more quickly, thus losing their original flexibility and sealing ability, leading to seal failure and a significant increase in the risk of lubricating oil leakage. At the same time, the lip and the skeleton are generally integrally molded or fixed by bolts, making it difficult to replace the lip after it ages, which can easily lead to leakage at the oil seal location. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a high-temperature resistant and leak-proof double-lip oil seal structure, which solves the technical problem in the prior art that the lip is prone to aging due to high temperature and leakage.

[0005] According to one aspect, at least one embodiment of this disclosure provides a high-temperature resistant and leak-proof double-lip oil seal structure, including a skeleton, the skeleton being annular, and further including a mounting ring, a fixing ring, a fastening groove, and a mounting mechanism. The mounting ring is fixedly disposed on the inner wall of the skeleton, and the fixing ring is slidably disposed on both sides of the fixing ring within the skeleton. A first sealing lip and a second sealing lip are respectively fixedly disposed on the fixing rings on both sides of the mounting ring. The fastening groove is fixedly disposed on the outer wall of both the first sealing lip and the second sealing lip. An annular spring is disposed within the fastening groove and contacts the side wall of the fastening groove. The mounting mechanism is disposed between the mounting ring and the fixing ring for mounting and fixing the mounting ring and the fixing ring.

[0006] Preferably, the mounting mechanism includes:

[0007] The mounting port is provided in a ring shape on the fixing ring;

[0008] Mounting posts: Multiple mounting posts are fixedly provided on the two opposite side walls of the mounting ring. The mounting posts pass through the mounting opening and are slidably connected to the side wall of the mounting opening.

[0009] A positioning mechanism is provided on the mounting post for positioning the mounting post and the fixing ring.

[0010] Furthermore, the positioning mechanism includes:

[0011] The mounting column has two positioning grooves on its side wall, and a positioning block is slidably disposed in the positioning groove.

[0012] A threaded rod is rotatably disposed at the bottom of the positioning groove, and the threaded rod extends into the positioning block through a threaded engagement;

[0013] A reverse rotation mechanism is provided inside the mounting column to drive the two threaded rods on the same mounting column to rotate synchronously.

[0014] Furthermore, the reverse rotation mechanism includes:

[0015] The first cavity is provided in the mounting column between the two positioning slots. A first bevel gear is rotatably provided on the side wall of the first cavity near the threaded rod. The first bevel gear is fixedly connected to the nearby threaded rod.

[0016] The second bevel gear is rotatably mounted on the side wall of the first cavity, and the second bevel gear meshes with the first bevel gear;

[0017] A synchronous rotation mechanism is disposed within the mounting ring and is used to drive multiple second bevel gears to rotate synchronously.

[0018] Furthermore, the synchronous rotation mechanism includes:

[0019] The first gear has an annular second cavity inside the mounting ring. The first gear is rotatably arranged in the second cavity on one side of the second bevel gear. A first connecting rod is fixedly arranged between the first gear and the adjacent second bevel gear.

[0020] A first toothed ring is rotatably disposed within the second cavity, and the first toothed ring meshes with the first gear;

[0021] A drive mechanism is disposed within the mounting ring and is used to drive the first toothed ring to rotate.

[0022] Based on the above solution, the drive mechanism includes:

[0023] The second gear is rotatably disposed within the second cavity and meshes with the first gear ring.

[0024] The third cavity is opened on one side of the second cavity. A third bevel gear is rotatably mounted on the side wall of the third cavity near the second gear. A second connecting rod is fixedly mounted between the third bevel gear and the second gear.

[0025] A fourth bevel gear is rotatably mounted on the side wall of the third cavity, and the fourth bevel gear meshes with the third bevel gear;

[0026] A drive assembly, which is mounted on the frame, is used to drive the fourth bevel gear to rotate.

[0027] Based on the above solution, the driving component includes:

[0028] A drive groove is formed on the side wall of the frame, and an internal hexagon bolt head is rotatably disposed in the drive groove;

[0029] A drive rod is fixedly disposed between the head of the internal hexagonal bolt and the fourth bevel gear.

[0030] Based on the above scheme, the first sealing lip and the second sealing lip are made of silicone rubber.

[0031] Based on the above scheme, the outer wall of the skeleton is provided with a ceramic coating.

[0032] Based on the above scheme, a sealing ring is provided between the fixing ring and the mounting ring.

[0033] The beneficial effects of the embodiments disclosed herein are as follows:

[0034] 1. In this disclosure, by using a ceramic coating and optimizing the first and second sealing lips to be made of silicone rubber, the ceramic coating can improve the thermal insulation effect of the skeleton, the first sealing lip, and the second sealing lip. At the same time, silicone rubber has outstanding high temperature resistance, good insulation and aging resistance, thereby improving the service life of the first and second sealing lips, and thus effectively reducing the impact of high temperature on the sealing effect.

[0035] 2. In this disclosure, the installation mechanism facilitates the installation and disassembly of the fixing ring and the mounting ring by tightening the head of the internal hex bolt, thereby facilitating timely replacement of the first sealing lip and the second sealing lip after they age, thus ensuring the sealing effect of the first sealing lip and the second sealing lip.

[0036] 3. In this disclosure, the installation ring, fixing ring, fastening groove and installation mechanism facilitate the improvement of the thermal insulation effect of the skeleton, the first sealing lip and the second sealing lip through the ceramic coating, and at the same time, the first sealing lip and the second sealing lip can be replaced in time after aging, thereby solving the technical problem of leakage caused by the aging of the lip due to high temperature in the prior art. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0038] Figure 1 This is a schematic diagram of a high-temperature resistant and leak-proof double-lip oil seal structure according to one embodiment of the present disclosure;

[0039] Figure 2 for Figure 1 A cross-sectional schematic diagram of a high-temperature resistant and leak-proof double-lip oil seal structure in one embodiment;

[0040] Figure 3 for Figure 1 An exploded view of the skeleton and fixing ring in the embodiment;

[0041] Figure 4 for Figure 1 A cross-sectional view of the mounting mechanism in the embodiment;

[0042] Figure 5 for Figure 1 In the embodiments Figure 4 A magnified structural diagram of point A in the middle;

[0043] Figure 6 for Figure 1 In the embodiments Figure 4 A magnified structural diagram of a portion of point B in the middle.

[0044] In the diagram: 1. Frame; 2. Mounting ring; 3. Fixing ring; 4. First sealing lip; 5. Second sealing lip; 6. Ring spring; 7. Mounting port; 8. Mounting post; 9. Positioning groove; 10. Positioning block; 11. Threaded rod; 12. First cavity; 13. First bevel gear; 14. Second bevel gear; 15. First gear; 16. First gear ring; 17. Second gear; 18. Third cavity; 19. Third bevel gear; 20. Fourth bevel gear; 21. Socket head cap screw. Detailed Implementation

[0045] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0046] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0047] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0048] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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, they should not be construed as limitations on this disclosure.

[0050] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] like Figures 1-6The diagram illustrates a high-temperature resistant, leak-proof double-lip oil seal structure according to an embodiment of this disclosure. It includes a frame 1, which is annular, and further comprises an mounting ring 2, a fixing ring 3, a fastening groove, and an installation mechanism. The mounting ring 2 is fixedly mounted on the inner wall of the frame 1. Fixing rings 3 are slidably mounted on both sides of the fixing ring 3 within the frame 1. A first sealing lip 4 and a second sealing lip 5 are fixedly mounted on the fixing rings 3 on both sides of the mounting ring 2. Fastening grooves are fixedly mounted on the outer walls of both the first sealing lip 4 and the second sealing lip 5. An annular spring 6 is installed within the fastening groove and contacts the side wall of the fastening groove. The installation mechanism is positioned between the mounting ring 2 and the fixing ring 3 for mounting and fixing the two rings. The outer wall of the frame 1 is coated with a ceramic coating. The first sealing lip 4 and the second sealing lip 5 are made of silicone rubber. A sealing ring is provided between the fixing ring 3 and the mounting ring 2.

[0052] Reference Figures 2-4 The installation mechanism includes an installation port 7, an installation post 8, and a positioning mechanism. Multiple installation ports 7 are annularly arranged on the fixing ring 3. Multiple installation posts 8 are fixedly installed on the two opposite side walls of the mounting ring 2. The installation posts 8 pass through the installation ports 7 and are slidably connected to the side walls of the installation ports 7. The positioning mechanism is installed on the installation posts 8 and is used to position the installation posts 8 relative to the fixing ring 3. The positioning mechanism includes a positioning groove 9, a threaded rod 11, and a reverse rotation mechanism. Two positioning grooves 9 are opened on the side wall of the installation post 8. A positioning block 10 is slidably installed in the positioning groove 9. The threaded rod 11 is rotatably installed at the bottom of the positioning groove 9. The threaded rod 11 passes through… The threaded engagement extends into the positioning block 10, and the reverse rotation mechanism is set inside the mounting post 8 to drive the two threaded rods 11 on the same mounting post 8 to rotate synchronously. Specifically, after the fixing ring 3 abuts against the mounting ring 2 and the mounting post 8 passes through the mounting opening 7, the reverse rotation mechanism can drive the two threaded rods 11 in the same mounting post 8 to rotate in opposite directions. At the same time, the threaded engagement between the threaded rods 11 and the positioning block 10 drives the positioning block 10 to move. Then, the engagement between the positioning block 10 and the mounting ring 2 can position the fixing ring 3, thereby realizing the installation and fixation of the fixing ring 3.

[0053] Reference Figures 4-6The reverse rotation mechanism includes a first cavity 12, a second bevel gear 14, and a synchronous rotation mechanism. The first cavity 12 is located within the mounting column 8 between two positioning slots 9. A first bevel gear 13 is rotatably mounted on the side wall of the first cavity 12 near the threaded rod 11, and is fixedly connected to the adjacent threaded rod 11. A second bevel gear 14 is rotatably mounted on the side wall of the first cavity 12, meshing with the first bevel gear 13. The synchronous rotation mechanism is located within the mounting ring 2 and is used to drive multiple second bevel gears 14 to rotate synchronously. The synchronous rotation mechanism includes a first gear 15, a first gear ring 16, and a drive mechanism. An annular second cavity is located within the mounting ring 2. A first gear 15 is rotatably mounted on one side of the second bevel gear 14. A first connecting rod is fixedly mounted between the first gear 15 and the adjacent second bevel gear 14. A first toothed ring 16 is rotatably mounted in the second cavity and meshes with the first gear 15. A drive mechanism is mounted in the mounting ring 2 to drive the first toothed ring 16 to rotate. Specifically, the operation of the drive mechanism can drive the first toothed ring 16 to rotate. At the same time, the meshing of the first toothed ring 16 with the first gear 15 can drive the first toothed ring 16, the first connecting rod, and the second bevel gear 14 to rotate. Meanwhile, the meshing of the second bevel gear 14 with the first bevel gear 13 can drive the two threaded rods 11 in the same mounting column 8 to rotate in opposite directions.

[0054] Reference Figure 6 The drive mechanism includes a second gear 17, a third cavity 18, a fourth bevel gear 20, and a drive assembly. The second gear 17 is rotatably disposed within the second cavity and meshes with a first gear ring 16. The third cavity 18 is located on one side of the second cavity. A third bevel gear 19 is rotatably disposed on the side wall of the third cavity 18 near the second gear 17. A second bevel gear 19 is fixedly disposed between the third bevel gear 19 and the second gear 17. The fourth bevel gear 20 is rotatably disposed on the side wall of the third cavity 18 and meshes with the third bevel gear 19. The drive assembly is mounted on the frame 1 and is used to drive the fourth bevel gear. The drive assembly includes a drive groove and a drive rod. The drive groove is located on the side wall of the frame 1. An internal hexagonal bolt head 21 is rotatably installed in the drive groove. The drive rod is fixedly installed between the internal hexagonal bolt head 21 and the fourth bevel gear 20. Specifically, the internal hexagonal bolt head 21 can be rotated with a wrench, and the fourth bevel gear 20 is rotated through the drive rod. At the same time, the engagement of the fourth bevel gear 20 with the third bevel gear 19 can drive the third bevel gear 19 and the second gear 17 to rotate. In turn, the engagement of the second gear 17 with the first gear ring 16 drives the first gear ring 16 to rotate.

[0055] In this embodiment, during use, after the operator abuts the fixing ring 3 against the mounting ring 2 and ensures that the mounting post 8 passes through the mounting opening 7, the operator can use a wrench to rotate the head of the hex bolt 21. Simultaneously, the drive rod drives the fourth bevel gear 20 to rotate. The meshing of the fourth bevel gear 20 with the third bevel gear 19 drives the third bevel gear 19 and the second gear 17 to rotate. Furthermore, the meshing of the second gear 17 with the first gear ring 16 drives the first gear ring 16 to rotate. At this time, the meshing of the first gear ring 16 with the first gear 15 drives the first gear ring 16, the first connecting rod, and the second bevel gear 14 to rotate. Simultaneously, the meshing of the second bevel gear 14 with the first bevel gear 13 drives the two threaded rods 11 within the same mounting post 8. The screw is rotated in the opposite direction, and the threaded rod 11 moves the positioning block 10 through the threaded engagement with the positioning block 10. The positioning block 10 then engages with the mounting ring 2 to position the fixing ring 3, thereby fixing the fixing ring 3 and installing the first sealing lip 4 and the second sealing lip 5. The first sealing lip 4 and the second sealing lip 5 can be disassembled by turning the internal hex bolt head 21 in the opposite direction. After installation, the ceramic coating can improve the thermal insulation effect of the skeleton 1, the first sealing lip 4 and the second sealing lip 5. At the same time, the silicone rubber has outstanding high temperature resistance, good insulation and aging resistance, thereby improving the service life of the first sealing lip 4 and the second sealing lip 5 and effectively reducing the impact of high temperature on the sealing effect.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high-temperature resistant and leak-proof double-lip oil seal structure, comprising a skeleton (1), wherein the skeleton (1) is configured as an annular shape, characterized in that, Also includes: Mounting ring (2), which is fixedly disposed on the inner wall of the frame (1); Fixed ring (3), the fixed ring (3) is slidably arranged on both sides of the fixed ring (3) inside the skeleton (1); Among them, a first sealing lip (4) and a second sealing lip (5) are respectively fixedly provided on the fixing ring (3) located on both sides of the mounting ring (2). Fastening grooves are fixedly provided on the outer walls of the first sealing lip (4) and the second sealing lip (5), and an annular spring (6) is provided in the fastening grooves, with the annular spring (6) in contact with the side wall of the fastening grooves. The installation mechanism is disposed between the installation ring (2) and the fixing ring (3) for installing and fixing the installation ring (2) and the fixing ring (3).

2. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 1, characterized in that, The installation mechanism includes: The mounting port (7) is provided in a ring shape on the fixing ring (3); Mounting posts (8), multiple mounting posts (8) are fixedly provided on the two opposite side walls of the mounting ring (2), the mounting posts (8) penetrate the mounting opening (7) and are slidably connected to the side wall of the mounting opening (7); A positioning mechanism is provided on the mounting post (8) for positioning the mounting post (8) and the fixing ring (3).

3. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 2, characterized in that, The positioning mechanism includes: Positioning groove (9), two positioning grooves (9) are opened on the side wall of the mounting column (8), and a positioning block (10) is slidably arranged in the positioning groove (9); A threaded rod (11) is rotatably disposed at the bottom of the positioning groove (9), and the threaded rod (11) extends into the positioning block (10) through a threaded engagement; A reverse rotation mechanism is provided inside the mounting column (8) to drive the two threaded rods (11) on the same mounting column (8) to rotate synchronously.

4. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 3, characterized in that, The reverse rotation mechanism includes: The first cavity (12) is provided in the mounting column (8) between the two positioning grooves (9). A first bevel gear (13) is rotatably provided on the side wall of the first cavity (12) near the threaded rod (11). The first bevel gear (13) is fixedly connected to the nearby threaded rod (11). The second bevel gear (14) is rotatably disposed on the side wall of the first cavity (12), and the second bevel gear (14) meshes with the first bevel gear (13); A synchronous rotation mechanism is provided inside the mounting ring (2) for driving multiple second bevel gears (14) to rotate synchronously.

5. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 4, characterized in that, The synchronous rotation mechanism includes: The first gear (15) has an annular second cavity inside the mounting ring (2). The first gear (15) is rotatably arranged inside the second cavity on one side of the second bevel gear (14). A first connecting rod is fixedly arranged between the first gear (15) and the adjacent second bevel gear (14). The first toothed ring (16) is rotatably disposed in the second cavity, and the first toothed ring (16) meshes with the first gear (15); A drive mechanism is disposed within the mounting ring (2) and is used to drive the first toothed ring (16) to rotate.

6. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 5, characterized in that, The drive mechanism includes: The second gear (17) is rotatably disposed in the second cavity and meshes with the first gear ring (16); The third cavity (18) is opened on one side of the second cavity. A third bevel gear (19) is rotatably provided on the side wall of the third cavity (18) near the second gear (17). A second connecting rod is fixedly provided between the third bevel gear (19) and the second gear (17). The fourth bevel gear (20) is rotatably disposed on the side wall of the third cavity (18), and the fourth bevel gear (20) meshes with the third bevel gear (19); A drive assembly is disposed on the frame (1) and is used to drive the fourth bevel gear (20) to rotate.

7. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 6, characterized in that, The driving component includes: A drive groove is provided on the side wall of the frame (1), and an internal hexagonal bolt head (21) is rotatably provided in the drive groove. The drive rod is fixedly disposed between the hexagonal socket head cap (21) and the fourth bevel gear (20).

8. The high-temperature resistant and leak-proof double-lip oil seal structure according to claim 7, characterized in that, The first sealing lip (4) and the second sealing lip (5) are made of silicone rubber.

9. A high-temperature resistant and leak-proof double-lip oil seal structure according to claim 8, characterized in that, The outer wall of the skeleton (1) is provided with a ceramic coating.

10. A high-temperature resistant, leak-proof double-lip oil seal structure according to claim 9, characterized in that, A sealing ring is provided between the fixing ring (3) and the mounting ring (2).

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