A wave spring double-end mechanical seal

Abstract

This utility model discloses a wave spring double-end mechanical seal, relating to the field of mechanical seal technology. It includes a movable ring, with a mechanical seal assembly on its exterior. The mechanical seal assembly includes a first sealing ring and a second sealing ring. One end of the first sealing ring has an extended sealing ring, and the outer wall of the extended sealing ring has a limiting groove and a limiting rail. A limiting component is located in the middle of the side wall of the first sealing ring. The limiting component includes a mounting groove, and the interior of the mounting groove has a threaded limiting ring and a threaded connecting seat. One side of the threaded connecting seat has a limiting telescopic rod, a support spring, and a limiting block. This utility model uses the support spring to push the limiting telescopic rod and the limiting block out, allowing the limiting block to pass through the mounting groove and connect to the limiting groove on the outer wall of the insertion ring. This achieves a positioning connection between the mechanical seal assembly and the movable ring without the need for bolts, making it simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a wave spring double-end mechanical seal. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure, the elastic force of the compensation mechanism, and the cooperation of auxiliary seals.

[0003] Existing mechanical seals require the rotating ring and gasket to be installed at one end first, followed by the stationary ring and gasket at the other end. The rotating and stationary rings are then secured to the seal using bolts secured with specialized tools. Finally, the two ends of the seal are joined together. However, using specialized tools to secure the rotating and stationary rings is not only time-consuming and labor-intensive but also increases the workload for operators. To address these issues, a wave spring double-end mechanical seal is needed. Utility Model Content

[0004] The main purpose of this invention is to provide a wave spring double-end mechanical seal, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A wave spring double-end mechanical seal includes a movable ring, and a mechanical seal assembly is disposed on the outside of the movable ring;

[0007] The mechanical seal assembly includes a first sealing ring and a second sealing ring. One end of the first sealing ring is provided with an extended sealing ring, and the outer wall of the extended sealing ring is provided with a limiting groove and a limiting rail. A limiting component is provided in the middle of the side wall of the first sealing ring.

[0008] The limiting component includes a mounting groove, inside which a threaded limiting ring and a threaded connecting seat are provided, and on one side of the threaded connecting seat are a limiting telescopic rod, a support spring and a limiting block.

[0009] Preferably, an extension sealing ring is fixedly connected to the side of the first sealing ring near the movable ring, and an insertion groove is provided between the first sealing ring and the extension sealing ring. There are two insertion grooves, which are respectively distributed opposite to each other on the side of the first sealing ring near the movable ring and the side of the second sealing ring near the movable ring.

[0010] Preferably, one end of the movable ring is fixedly connected to a plug ring, and there are two plug rings, which are symmetrically distributed at both ends of the movable ring. The plug ring is inserted into the inside of the plug groove. The extended sealing ring passes through the movable ring and is connected to the inside of the second sealing ring. The outer wall of the plug ring is provided with a limiting groove, and there are two limiting grooves, which are symmetrically distributed on both sides of the plug ring.

[0011] Preferably, the outer wall of the extended sealing ring is provided with a limiting groove, and there are two limiting grooves, which are symmetrically distributed on the two outer walls of the extended sealing ring. The limiting groove is slidably connected to a limiting rail, and the side of the limiting rail away from the limiting groove is fixedly connected to the inner wall of the movable ring. The outer wall of the extended sealing ring is in contact with the inner wall of the movable ring.

[0012] Preferably, the first sealing ring has a mounting groove in the middle of its side wall, and there are four mounting grooves, which are symmetrically distributed on both sides of the first sealing ring and both sides of the second sealing ring. A threaded limiting ring is engaged inside the mounting groove, and the threaded limiting ring is located at one end of the mounting groove near the opening. The threaded limiting ring is correspondingly arranged with the mounting groove. A threaded connecting seat is threadedly connected to the middle of the threaded limiting ring, and the threaded connecting seat is T-shaped.

[0013] Preferably, a toggle plate is fixedly connected to the side of the threaded connector away from the threaded limiting ring, and a limiting telescopic rod is installed on the side of the threaded connector away from the toggle plate by bolts. A support spring is sleeved on the outside of the limiting telescopic rod, and a limiting block is installed on the end of the limiting telescopic rod away from the threaded connector by bolts. The size of the limiting block is smaller than the size of the threaded limiting ring. The two ends of the support spring are respectively connected to the side of the limiting block and the side of the threaded connector. The limiting block passes through the mounting groove and connects to the inside of the limiting groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, a support spring drives the limiting telescopic rod and the limiting block to pop out, thereby allowing the limiting block to pass through the mounting groove and connect to the limiting groove on the outer wall of the plug ring. This achieves the positioning connection between the mechanical seal assembly and the movable ring without the need for bolt positioning, making it simple and convenient. At the same time, by rotating the actuating plate and the threaded connection seat, the threaded connection seat causes the support spring and the limiting block to separate from the inside of the limiting groove and the mounting groove, facilitating the maintenance and replacement of the device and preventing damage to the support spring after long-term use, which would affect the stability of use. Attached Figure Description

[0016] Figure 1 This is a first-view structural schematic diagram of the entire device of this utility model;

[0017] Figure 2This is a schematic diagram of the mechanical seal assembly of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the mechanical seal assembly of this utility model;

[0019] Figure 4 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Movable ring; 2. Mechanical seal assembly; 3. First sealing ring; 4. Extended sealing ring; 5. Second sealing ring; 6. Limiting groove; 7. Limiting slide rail; 8. Insertion ring; 9. Insertion groove; 10. Limiting assembly; 11. Mounting groove; 12. Threaded limiting ring; 13. Threaded connection seat; 14. Limiting telescopic rod; 15. Support spring; 16. Actuating plate; 17. Limiting block; 18. Limiting groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figure 1 , Figure 2 , Figure 3 As shown, a wave spring double-end mechanical seal includes a movable ring 1, and a mechanical seal assembly 2 is disposed on the outside of the movable ring 1;

[0023] The mechanical seal assembly 2 includes a first sealing ring 3 and a second sealing ring 5. One end of the first sealing ring 3 is provided with an extended sealing ring 4, and the outer wall of the extended sealing ring 4 is provided with a limiting groove 6 and a limiting rail 7. A limiting component 10 is provided in the middle of the side wall of the first sealing ring 3. The extended sealing ring 4 is fixedly connected to the side of the first sealing ring 3 near the movable ring 1, and an insertion groove 9 is provided between the first sealing ring 3 and the extended sealing ring 4. There are two insertion grooves 9, which are respectively distributed opposite to each other on the side of the first sealing ring 3 near the movable ring 1 and the side of the second sealing ring 5 near the movable ring 1.

[0024] One end of the movable ring 1 is fixedly connected to a plug ring 8, and there are two plug rings 8, which are symmetrically distributed at both ends of the movable ring 1. The plug ring 8 is inserted into the inside of the plug groove 9. The extension sealing ring 4 passes through the movable ring 1 and is connected to the inside of the second sealing ring 5. The outer wall of the plug ring 8 is provided with a limiting groove 18, and there are two limiting grooves 18, which are symmetrically distributed on both sides of the plug ring 8. The outer wall of the extension sealing ring 4 is provided with a limiting slide groove 6, and there are two limiting slide grooves 6, which are symmetrically distributed on both sides of the outer wall of the extension sealing ring 4. The inside of the limiting slide groove 6 is slidably connected to a limiting slide rail 7, and the side of the limiting slide rail 7 away from the limiting slide groove 6 is fixedly connected to the inner wall of the movable ring 1. The outer wall of the extension sealing ring 4 is in contact with the inner wall of the movable ring 1.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the limiting component 10 includes a mounting groove 11. The mounting groove 11 is provided with a threaded limiting ring 12 and a threaded connecting seat 13. A limiting telescopic rod 14, a support spring 15 and a limiting block 17 are provided on one side of the threaded connecting seat 13. The side wall of the first sealing ring 3 has a mounting groove 11 in the middle. There are four mounting grooves 11, which are symmetrically distributed on both sides of the first sealing ring 3 and both sides of the second sealing ring 5. The threaded limiting ring 12 is snapped into the inside of the mounting groove 11. The threaded limiting ring 12 is located at one end of the mounting groove 11 near the opening. The threaded limiting ring 12 is correspondingly set with the mounting groove 11. The middle of the threaded limiting ring 12 is connected to the threaded connecting seat 13 by a thread. The threaded connecting seat 13 is T-shaped.

[0026] A toggle plate 16 is fixedly connected to the side of the threaded connector 13 away from the threaded limiting ring 12. A limiting telescopic rod 14 is bolted to the side of the threaded connector 13 away from the toggle plate 16. A support spring 15 is sleeved on the outside of the limiting telescopic rod 14. A limiting block 17 is bolted to the end of the limiting telescopic rod 14 away from the threaded connector 13. The size of the limiting block 17 is smaller than the size of the threaded limiting ring 12. The two ends of the support spring 15 are respectively connected to the side of the limiting block 17 and the side of the threaded connector 13. The limiting block 17 passes through the mounting groove 11 and connects to the inside of the limiting groove 18. The support spring 15 causes the limiting telescopic rod 14 and the limiting block 17 to pop out, so that the limiting block 17 passes through the mounting groove 11 and connects to the limiting groove 18 on the outer wall of the plug ring 8, thereby realizing the positioning connection between the mechanical seal assembly 2 and the movable ring 1 without bolt positioning, which is simple and convenient. At the same time, by rotating the actuating plate 16 and the threaded connection seat 13, the threaded connection seat 13 causes the support spring 15 and the limiting block 17 to separate from the limiting groove 18 and the mounting groove 11, which facilitates the maintenance and replacement of the device and prevents the support spring 15 from being damaged after long-term use, thus affecting the stability of use.

[0027] It should be noted that this utility model is a wave spring double-end mechanical seal. In use, the threaded connecting seat 13 drives the support spring 15 and the limiting block 17 to be installed inside the mounting groove 11. The threaded connecting seat 13 is connected to the threaded limiting ring 12 via threads, thereby allowing the support spring 15 to push out the limiting block 17. The first sealing ring 3 and the second sealing ring 5 are respectively inserted into the insertion rings 8 at both ends of the movable ring 1. Simultaneously, the extended sealing ring 4 is inserted into the interior of the movable ring 1. The end of the extended sealing ring 4 furthest from the first sealing ring 3 is connected to the interior of the second sealing ring 5. The limiting groove 6 on the outer wall of the extended sealing ring 4 connects to the inner wall of the insertion ring 8. The limiting slide rail 7 is aligned to facilitate the quick connection between the mechanical seal assembly 2 and the movable ring 1. At the same time, when the two plug rings 8 are respectively connected inside the first sealing ring 3 and the second sealing ring 5, the plug rings 8 compress the limiting block 17, causing the limiting block 17 to drive the support spring 15 and the limiting telescopic rod 14 to retract in the direction of the threaded connection seat 13. After the insertion is completed, the limiting block 17 is aligned with the limiting groove 18 on the outer wall of the plug ring 8. At this time, the support spring 15 drives the limiting telescopic rod 14 and the limiting block 17 to push out, so that the limiting block 17 is locked inside the limiting groove 18, completing the limiting connection between the movable ring 1 and the mechanical seal assembly 2.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wave spring double face mechanical seal comprising a mobile ring (1), characterized in that: The movable ring (1) is provided with a mechanical seal assembly (2) on its outside; The mechanical seal assembly (2) includes a first sealing ring (3) and a second sealing ring (5). One end of the first sealing ring (3) is provided with an extended sealing ring (4), and the outer wall of the extended sealing ring (4) is provided with a limiting groove (6) and a limiting rail (7). A limiting component (10) is provided in the middle of the side wall of the first sealing ring (3). The limiting component (10) includes a mounting groove (11), inside which a threaded limiting ring (12) and a threaded connecting seat (13) are provided, and on one side of the threaded connecting seat (13) a limiting telescopic rod (14), a support spring (15) and a limiting block (17) are provided.

2. A wave spring double face mechanical seal according to claim 1, characterized in that: An extension sealing ring (4) is fixedly connected to the side of the first sealing ring (3) near the movable ring (1), and an insertion groove (9) is provided between the first sealing ring (3) and the extension sealing ring (4). There are two insertion grooves (9), which are respectively distributed opposite to each other on the side of the first sealing ring (3) near the movable ring (1) and the side of the second sealing ring (5) near the movable ring (1).

3. The wave spring double face mechanical seal according to claim 1, wherein: One end of the movable ring (1) is fixedly connected to a plug ring (8), and there are two plug rings (8), which are symmetrically distributed at both ends of the movable ring (1). The plug ring (8) is inserted into the inside of the plug groove (9). The extended sealing ring (4) passes through the movable ring (1) and is connected to the inside of the second sealing ring (5). The outer wall of the plug ring (8) is provided with a limiting groove (18), and there are two limiting grooves (18), which are symmetrically distributed on both sides of the plug ring (8).

4. A wave spring double face mechanical seal according to claim 3, characterized in that: The outer wall of the extended sealing ring (4) has a limiting groove (6), and there are two limiting grooves (6), which are symmetrically distributed on the two outer walls of the extended sealing ring (4). The inner wall of the limiting groove (6) is slidably connected to a limiting rail (7), and the side of the limiting rail (7) away from the limiting groove (6) is fixedly connected to the inner wall of the movable ring (1). The outer wall of the extended sealing ring (4) is in contact with the inner wall of the movable ring (1).

5. The wave spring double face mechanical seal according to claim 1, wherein: The first sealing ring (3) has an installation groove (11) in the middle of its side wall. There are four installation grooves (11), which are symmetrically distributed on both sides of the first sealing ring (3) and the second sealing ring (5). A threaded limiting ring (12) is engaged inside the installation groove (11). The threaded limiting ring (12) is located at one end of the installation groove (11) near the opening. The threaded limiting ring (12) is correspondingly arranged with the installation groove (11). A threaded connecting seat (13) is threadedly connected to the middle of the threaded limiting ring (12). The threaded connecting seat (13) is T-shaped.

6. A wave spring double face mechanical seal according to claim 5, characterized in that: A toggle plate (16) is fixedly connected to the side of the threaded connector (13) away from the threaded limiting ring (12), and a limiting telescopic rod (14) is installed on the side of the threaded connector (13) away from the toggle plate (16) by bolts. A support spring (15) is sleeved on the outside of the limiting telescopic rod (14), and a limiting block (17) is installed on the end of the limiting telescopic rod (14) away from the threaded connector (13) by bolts. The size of the limiting block (17) is smaller than the size of the threaded limiting ring (12). The two ends of the support spring (15) are respectively connected to the side of the limiting block (17) and the side of the threaded connector (13). The limiting block (17) passes through the mounting groove (11) and connects to the inside of the limiting groove (18).

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