Spiral floating oil seal

Abstract

The utility model discloses a spiral floating oil seal, which relates to the technical field of floating oil seals and comprises a first floating seal seat and a second floating seal seat, the first floating seal seat and the second floating seal seat are symmetrically arranged in an abutting mode, two floating seal rings are arranged on the sides, close to each other, of the first floating seal seat and the second floating seal seat, the close sides of the two floating sealing rings abut against each other, sealing rings are arranged between the two floating sealing rings and the corresponding first floating sealing base and between the two floating sealing rings and the corresponding second floating sealing base, and the two sides of each sealing ring abut against the corresponding floating sealing ring, the corresponding first floating sealing base and the corresponding second floating sealing base respectively. A first annular groove and a second annular groove are formed in the sides, close to each other, of the first floating seal seat and the second floating seal seat correspondingly, an inner thread groove is formed in the inner wall of the second annular groove, and an outer thread ring is fixedly arranged on the inner wall of the first annular groove. According to the utility model, time-saving and labor-saving assembly can be carried out, the mounting structure is firm, and the stability is high during use.

Description

Technical Field

[0001] This utility model relates to the field of floating oil seal technology, specifically to a spiral floating oil seal. Background Technology

[0002] A floating oil seal is a type of mechanical seal, a rotary dynamic sealing device developed to adapt to harsh working environments. The spiral floating oil seal is a special type of floating oil seal. It mainly consists of two metal sealing rings with spiral grooves and a rubber sealing ring. Its working principle is based on the relative rotation between the two sealing rings and the special structure of the spiral grooves to achieve the sealing function.

[0003] During use, traditional spiral floating oil seals are prone to loosening of the spiral groove connection due to long-term vibration, which leads to an increase in the gap between the two floating seal seats and reduces the sealing performance of the floating oil seal. Utility Model Content

[0004] In view of the problems existing in the current spiral floating oil seal, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a spiral floating oil seal, which solves the problem that in the prior art, the spiral floating oil seal is easily loosened due to long-term vibration during use, which leads to an increase in the gap between the two floating seal seats and thus reduces the sealing performance of the floating oil seal.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A spiral floating oil seal includes a first floating seal seat and a second floating seal seat, which are symmetrically arranged and abut against each other. Two floating seal rings are provided on the adjacent side of the first and second floating seal seats, abutting against each other on the adjacent side. A sealing ring is provided between each of the two floating seal rings and the corresponding first and second floating seal seats. The two sides of the sealing ring abut against the corresponding floating seal ring, the first floating seal seat, and the second floating seal seat, respectively. A first annular groove and a second annular groove are respectively formed on the adjacent side of the first and second floating seal seats. An internal thread groove is formed on the inner wall of the second annular groove. An external thread ring is fixedly provided on the inner wall of the first annular groove, and the external thread ring is threadedly connected to the internal thread groove. A groove is formed on the outer wall of the first floating seal seat, and a rod is provided inside the groove. A through hole is formed on the surface of the external thread ring at a position corresponding to the rod. An insertion hole is formed at the bottom of the second annular groove at a position corresponding to the rod. One end of the rod passes through the through hole and is inserted into the insertion hole. A limiting mechanism is provided inside the groove to restrict the movement of the rod.

[0008] Preferably, the limiting mechanism includes a slider and a threaded rod. The slider is slidably disposed inside the groove. One end of the insert rod is fixedly connected to the slider. A threaded hole is provided on one side of the inner wall of the groove. The threaded rod is threadedly sleeved inside the threaded hole. A limiting hole is provided on the other side of the inner wall of the groove. The other end of the threaded rod is slidably inserted into the limiting hole. The upper surface of the slider abuts against the threaded rod.

[0009] Preferably, both the upper and lower sides of the slider abut against the inner wall of the groove, so that the slider cannot rotate, that is, it can slide stably.

[0010] Preferably, the lower side of the slider has a notch to prevent interference between the slider and one end of the threaded rod when the slider is slidable.

[0011] Preferably, the end of the threaded rod located inside the limiting hole is not threaded, which facilitates the rotation of the threaded rod.

[0012] Preferably, the outer wall of the insertion rod is provided with a rubber sleeve to improve the sealing between the insertion rod and the through hole and insertion hole.

[0013] Preferably, the sides of the first and second floating seal seats that are close to each other are mirror-finished to improve the sealing performance between the first and second floating seal seats.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This invention connects the first and second floating seals by rotating the first floating seal relative to the second floating seal, causing the external threaded ring to be threaded into the internal threaded groove. Then, the insertion rod is inserted into the insertion hole through the through hole, preventing the external threaded ring from rotating relative to the internal threaded groove, thus ensuring a stable connection between the first and second floating seals. Next, the threaded rod is rotated, causing the threaded end to move outwards from the threaded hole until the unthreaded end is inserted into the limiting hole. At this point, the threaded rod abuts against the upper side of the slider, thus limiting the insertion rod. This completes the time-saving and labor-saving assembly of the spiral floating oil seal, resulting in a robust installation structure and high stability during use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the structure of a spiral floating oil seal proposed in this utility model;

[0018] Figure 2 for Figure 1 Internal structure diagram;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of part A in the middle section.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. First floating seal seat; 2. Second floating seal seat; 3. Floating seal ring; 4. Sealing ring; 5. Internal threaded groove; 6. External threaded ring; 7. Insert rod; 8. Slider; 9. Threaded rod. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This utility model discloses a spiral floating oil seal.

[0024] Reference Figure 1-3 A spiral floating oil seal includes a first floating seal seat 1 and a second floating seal seat 2, which are symmetrically arranged and abut against each other. The sides of both the first and second floating seal seats 1 and 2 that are close together are mirror-finished to improve the sealing performance between them. Two floating seal rings 3 are provided on the sides of the first and second floating seal seats 1 and 2 that are close together, and sealing rings 4 are provided between each of the two floating seal rings 3 and their corresponding first and second floating seal seats 1 and 2. The two sides of the sealing rings 4 abut against the corresponding floating seal rings 3, first floating seal seats 1, and second floating seal seats 2, respectively. The first floating seal seat 1 and the second floating seal seat 2 are respectively provided on the side close to each other. The inner wall of the second floating seal seat 1 is provided with an internal thread groove 5. The inner wall of the first floating seal seat 1 is fixedly provided with an external thread ring 6. The external thread ring 6 is threadedly connected to the internal thread groove 5. The outer wall of the first floating seal seat 1 is provided with a groove. The groove is provided with a rod 7. The surface of the external thread ring 6 and the position corresponding to the rod 7 are provided with a through hole. The bottom of the second floating seal seat 1 and the position corresponding to the rod 7 are provided with a insertion hole. One end of the rod 7 passes through the through hole and is inserted into the insertion hole. The outer wall of the rod 7 is provided with a rubber sleeve to improve the sealing between the rod and the through hole and the insertion hole.

[0025] Reference Figure 1-3The groove is equipped with a limiting mechanism to restrict the movement of the insertion rod 7. The limiting mechanism includes a slider 8 and a threaded rod 9. The slider 8 is slidably disposed inside the groove. One end of the insertion rod 7 is fixedly connected to the slider 8. A threaded hole is opened on one side of the inner wall of the groove. The threaded rod 9 is threadedly sleeved inside the threaded hole. A limiting hole is opened on the other side of the inner wall of the groove. The other end of the threaded rod 9 is slidably inserted into the limiting hole. The upper surface of the slider 8 abuts against the threaded rod 9. The end of the threaded rod 9 located in the limiting hole is not threaded, so as to facilitate the rotation of the threaded rod.

[0026] Reference Figure 1-3 Both the upper and lower sides of the slider 8 are in contact with the inner wall of the groove, so that the slider 8 cannot rotate, that is, it can slide stably. The lower side of the slider 8 has a notch to prevent the slider 8 from interfering with one end of the threaded rod 9 when sliding.

[0027] In this invention, during assembly, the first floating seal 1 is rotated relative to the second floating seal 2, causing the external threaded ring 6 to be threaded into the internal threaded groove 5, thus completing the connection between the first floating seal 1 and the second floating seal 2. Then, the insertion rod 7 is inserted into the insertion hole through the through hole, so that the external threaded ring 6 cannot rotate relative to the internal threaded groove 5, thus ensuring a stable connection between the first floating seal 1 and the second floating seal 2. Then, the threaded rod 9 is rotated, causing the threaded end of the threaded rod 8 to move out of the threaded hole until the unthreaded end of the threaded rod 9 is inserted into the limiting hole. At this time, the threaded rod 9 abuts against the upper side of the slider 8, thus completing the limiting of the insertion rod 7. This completes the time-saving and labor-saving assembly of the spiral floating oil seal, and the installation structure is firm and has high stability during use.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A spiral floating oil seal, comprising a first floating seal seat (1) and a second floating seal seat (2), characterized in that, The first floating seal seat (1) and the second floating seal seat (2) are symmetrically arranged and abut against each other. Two floating seal rings (3) are provided on the side of the first floating seal seat (1) and the second floating seal seat (2) that are close to each other. A sealing ring (4) is provided between the two floating seal rings (3) and the corresponding first floating seal seat (1) and the second floating seal seat (2). The two sides of the sealing ring (4) abut against the corresponding floating seal ring (3), the first floating seal seat (1) and the second floating seal seat (2) respectively. A first annular groove and a second annular groove are respectively opened on the side of the first floating seal seat (1) and the second floating seal seat (2) that are close to each other. The inner wall of the second annular groove is provided with an internal thread groove (5), and the inner wall of the first annular groove is fixedly provided with an external thread ring (6). The external thread ring (6) is threadedly connected to the internal thread groove (5). The outer wall of the first floating seal seat (1) is provided with a groove. The inside of the groove is provided with a plug rod (7). The surface of the external thread ring (6) and the position corresponding to the plug rod (7) are provided with a through hole. The bottom of the second annular groove and the position corresponding to the plug rod (7) are provided with a plug hole. One end of the plug rod (7) passes through the through hole and is plugged into the plug hole. The inside of the groove is provided with a limiting mechanism to restrict the movement of the plug rod (7).

2. The spiral floating oil seal according to claim 1, characterized in that, The limiting mechanism includes a slider (8) and a threaded rod (9). The slider (8) is slidably disposed inside the groove. One end of the insert rod (7) is fixedly connected to the slider (8). A threaded hole is provided on one side of the inner wall of the groove. The threaded rod (9) is threadedly sleeved inside the threaded hole. A limiting hole is provided on the other side of the inner wall of the groove. The other end of the threaded rod (9) is slidably inserted into the limiting hole. The upper surface of the slider (8) abuts against the threaded rod (9).

3. The spiral floating oil seal according to claim 2, characterized in that, The upper and lower sides of the slider (8) are in contact with the inner wall of the groove.

4. The spiral floating oil seal according to claim 2, characterized in that, The slider (8) has a notch on its lower side.

5. The spiral floating oil seal according to claim 1, characterized in that, The threaded rod (9) has no thread at one end located inside the limiting hole.

6. The spiral floating oil seal according to claim 1, characterized in that, The outer wall of the insertion rod (7) is provided with a rubber sleeve.

7. The spiral floating oil seal according to claim 1, characterized in that, The first floating seal (1) and the second floating seal (2) are both mirror-finished on the side closest to each other.

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