Long-life mechanical seal

Abstract

The utility model relates to mechanical seal technical field, and disclose long -lived type mechanical seal, including pivot, moving ring, static ring, shell, adjusting assembly, moving ring, static ring and shell all are set in the outside of pivot, the lower extreme of moving ring, the lower extreme of static ring in moving ring, the lower surface of shell is connected with the connecting plate through bolt fixation, adjusting assembly sets up in the inside of shell, adjusting assembly includes mounting panel, the inside of shell is provided with mounting panel, the middle part of mounting panel upper surface is evenly provided with a plurality of springs. The utility model discloses when the wear of moving ring and static ring junction reaches its influence sealing effect, through adjusting the height of mounting panel, can make the elasticity of spring guarantee the sealing effect between moving ring and static ring, thereby can prolong the service life of mechanical seal many times, avoid the frequent replacement of mechanical seal, also further reduce the generation of cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically to long-life mechanical seals. Background Technology

[0002] Mechanical seals are devices used to prevent fluid leakage, commonly found in rotating equipment such as pumps and compressors. A mechanical seal is a device used to achieve a fluid seal between a rotating shaft and a stationary component, and is widely used in rotating equipment such as pumps, compressors, and agitators. Its core function is to prevent leakage of the working medium (liquid or gas) while preventing external impurities from entering the equipment.

[0003] However, existing mechanical seals need to be replaced when they wear down to a certain extent, resulting in a short overall service life, high costs, and low practical performance.

[0004] Therefore, a long-life mechanical seal is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a long-life mechanical seal, which solves the technical problem of the short life of traditional mechanical seals and achieves the goal of a longer mechanical seal life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a long-life mechanical seal, comprising a rotating shaft, a rotating ring, a stationary ring, a housing, and an adjusting assembly. The rotating ring, stationary ring, and housing are all fitted around the outside of the rotating shaft. The stationary ring is located at the lower end of the rotating ring, and the housing is located at the lower end of the stationary ring. A connecting plate is fixedly connected to the lower surface of the housing by bolts. The adjusting assembly is disposed inside the housing and includes a mounting plate. The mounting plate is disposed inside the housing. Multiple springs are evenly arranged in the middle of the upper surface of the mounting plate. A movable ring is fixedly connected to the upper end of each spring. The movable ring is fixedly connected to the stationary ring. Multiple threaded rods are fixedly connected to the middle of the connecting plate, and the upper ends of the threaded rods extend to the upper end of the mounting plate.

[0007] Preferably, the upper end of each threaded rod is fitted with a first threaded sleeve, and the lower end of each threaded rod is fitted with a second threaded sleeve. Both the first and second threaded sleeves are tightly fitted to the mounting plate, and the mounting plate can be easily fixed by providing the first and second threaded sleeves.

[0008] Preferably, a first sealing ring is provided at the connection between the outer shell and the connecting plate. The first sealing ring is tightly fitted to both the outer shell and the connecting plate, thereby improving the sealing performance between the outer shell and the connecting plate.

[0009] Preferably, a second sealing ring is fixedly connected to the inner wall of the rotating ring, and the inner wall of the second sealing ring is fixedly connected to the rotating shaft. The sealing performance between the rotating ring and the rotating shaft can be improved by the second sealing ring.

[0010] Preferably, a third sealing ring is provided at the connection between the outer wall of the stationary ring and the moving ring. The third sealing ring is tightly fitted to both the stationary ring and the moving ring, thereby improving the sealing performance between the stationary ring and the moving ring.

[0011] Preferably, a fourth sealing ring is provided at the connection between the stationary ring and the rotating ring. The fourth sealing ring is in close contact with both the rotating ring and the stationary ring, thereby improving the sealing performance between the rotating ring and the stationary ring.

[0012] This invention provides a long-life mechanical seal. It has the following beneficial effects:

[0013] (1) When the connection between the rotating ring and the stationary ring is worn to the point that it affects the sealing effect, the height of the mounting plate can be adjusted so that the elasticity of the spring can ensure the sealing effect between the rotating ring and the stationary ring. This can extend the service life of the mechanical seal multiple times, avoid frequent replacement of the mechanical seal, and further reduce the cost.

[0014] (2) The present invention is made convenient for workers to replace and repair the internal springs by bolting the outer shell and the connecting plate. At the same time, the setting of multiple sealing rings further ensures its sealing performance, and the sealing performance is high. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the outer shell structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the orthographic section of the present invention;

[0018] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0019] In the diagram: 1. Rotating shaft, 2. Moving ring, 3. Stationary ring, 4. Housing, 5. Connecting plate, 6. Adjusting assembly, 61. Mounting plate, 62. Spring, 63. Moving ring, 64. Threaded rod, 65. First threaded sleeve, 66. Second threaded sleeve, 7. First sealing ring, 8. Second sealing ring, 9. Third sealing ring, 10. Fourth sealing ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example

[0022] A preferred embodiment of the long-life mechanical seal provided by this utility model is, for example... Figure 1-4 As shown: a long-life mechanical seal includes a rotating shaft 1, a rotating ring 2, a stationary ring 3, a housing 4, and an adjusting assembly 6. The rotating ring 2, stationary ring 3, and housing 4 are all sleeved on the outside of the rotating shaft 1. The stationary ring 3 is at the lower end of the rotating ring 2, and the housing 4 is at the lower end of the stationary ring 3. A connecting plate 5 is fixedly connected to the lower surface of the housing 4 by bolts. The adjusting assembly 6 is located inside the housing 4. The adjusting assembly 6 includes a mounting plate 61, which is located inside the housing 4. Multiple springs 62 are evenly arranged in the middle of the upper surface of the mounting plate 61. A moving ring 63 is fixedly connected to the upper end of the spring 62. The moving ring 63 is fixedly connected to the stationary ring 3. Multiple threaded rods 64 are fixedly connected to the middle of the connecting plate 5. The upper end of the threaded rods 64 extends to the upper end of the mounting plate 61.

[0023] The upper end of the threaded rod 64 is fitted with a first threaded sleeve 65, and the lower end of the threaded rod 64 is fitted with a second threaded sleeve 66. The first threaded sleeve 65 and the second threaded sleeve 66 are tightly fitted with the mounting plate 61.

[0024] Furthermore, in this embodiment, when the connection between the rotating ring 2 and the stationary ring 3 is worn to the point that it affects the sealing effect, the height of the mounting plate 61 can be adjusted so that the elasticity of the spring 62 can ensure the sealing effect between the rotating ring 2 and the stationary ring 3. This can extend the service life of the mechanical seal multiple times, avoid frequent replacement of the mechanical seal, and further reduce costs. Example

[0025] Based on Embodiment 1, a preferred embodiment of the long-life mechanical seal provided by this utility model is, for example... Figure 1-4 As shown: A first sealing ring 7 is provided at the connection between the outer shell 4 and the connecting plate 5, and the first sealing ring 7 is tightly fitted to the outer shell 4 and the connecting plate 5 respectively;

[0026] The inner wall of the rotating ring 2 is fixedly connected to a second sealing ring 8, and the inner wall of the second sealing ring 8 is fixedly connected to the rotating shaft 1.

[0027] A third sealing ring 9 is provided at the connection between the outer wall of the stationary ring 3 and the moving ring 63. The third sealing ring 9 is tightly fitted to both the stationary ring 3 and the moving ring 63.

[0028] A fourth sealing ring 10 is provided at the connection between the stationary ring 3 and the rotating ring 2. The fourth sealing ring 10 is tightly fitted to both the rotating ring 2 and the stationary ring 3.

[0029] Furthermore, in this embodiment, the outer shell 4 and the connecting plate 5 are connected by bolts, which facilitates the replacement and maintenance of the internal spring 62 by the staff. At the same time, the setting of multiple sealing rings further ensures its sealing performance, resulting in high sealing performance.

[0030] When the connection between the rotating ring 2 and the stationary ring 3 is worn to the point that it affects the sealing effect, the connecting plate 5 is opened and the height of the mounting plate 61 is adjusted. After adjustment, the mounting plate 61 is fixed by the first threaded sleeve 65 and the second threaded sleeve 66. This allows the elasticity of the spring 62 to ensure the sealing effect between the rotating ring 2 and the stationary ring 3, thereby extending the service life of the mechanical seal multiple times, avoiding frequent replacement of the mechanical seal, and further reducing costs.

[0031] Meanwhile, when staff need to inspect and replace the components inside the housing, the bolt connection between the housing 4 and the connecting plate 5 makes it easy to open the connecting plate 5 to inspect and replace the inside of the housing 4. The first sealing ring 7, the second sealing ring 8, the third sealing ring 9 and the fourth sealing ring 10 can further improve the overall sealing effect.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A long-life mechanical seal, comprising a rotating shaft (1), a rotating ring (2), a stationary ring (3), a housing (4), and an adjusting assembly (6), characterized in that: The moving ring (2), stationary ring (3) and outer shell (4) are all sleeved on the outside of the rotating shaft (1). The stationary ring (3) is at the lower end of the moving ring (2), and the outer shell (4) is at the lower end of the stationary ring (3). The lower surface of the outer shell (4) is fixedly connected to a connecting plate (5) by bolts. The adjusting component (6) is set inside the outer shell (4). The adjusting component (6) includes a mounting plate (61). The mounting plate (61) is set inside the outer shell (4). A plurality of springs (62) are evenly arranged in the middle of the upper surface of the mounting plate (61). A moving ring (63) is fixedly connected to the upper end of the spring (62). The moving ring (63) is fixedly connected to the stationary ring (3). A plurality of threaded rods (64) are fixedly connected to the middle of the connecting plate (5). The upper end of the threaded rods (64) extends through to the upper end of the mounting plate (61).

2. The long-life mechanical seal according to claim 1, characterized in that: The upper end of the threaded rod (64) is fitted with a first threaded sleeve (65), and the lower end of the threaded rod (64) is fitted with a second threaded sleeve (66). The first threaded sleeve (65) and the second threaded sleeve (66) are tightly fitted with the mounting plate (61).

3. The long-life mechanical seal according to claim 1, characterized in that: A first sealing ring (7) is provided at the connection between the outer shell (4) and the connecting plate (5), and the first sealing ring (7) is tightly fitted to the outer shell (4) and the connecting plate (5) respectively.

4. The long-life mechanical seal according to claim 1, characterized in that: The inner wall of the moving ring (2) is fixedly connected to a second sealing ring (8), and the inner wall of the second sealing ring (8) is fixedly connected to the rotating shaft (1).

5. The long-life mechanical seal according to claim 1, characterized in that: A third sealing ring (9) is provided at the connection between the outer wall of the stationary ring (3) and the moving ring (63), and the third sealing ring (9) is tightly fitted to the stationary ring (3) and the moving ring (63) respectively.

6. The long-life mechanical seal according to claim 1, characterized in that: A fourth sealing ring (10) is provided at the connection between the stationary ring (3) and the moving ring (2), and the fourth sealing ring (10) is in close contact with both the moving ring (2) and the stationary ring (3).

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