Mechanical seal assembly capable of improving assembling efficiency

Abstract

The utility model discloses a mechanical seal assembly with improved assembly efficiency, the mechanical seal assembly with improved assembly efficiency comprises a shaft sleeve, a spring seat sleeved on the shaft sleeve, a movable ring and a static ring, one end of the spring seat is provided with a detachable support ring, the other end of the spring seat is provided with a push ring and sleeved on the shaft sleeve, and the movable ring is sleeved on the shaft sleeve. A plurality of counter bores are evenly distributed in the end face of the supporting ring along the circumference, detachable springs are arranged in the counter bores, the supporting ring is detachably connected to the spring seat and the pushing ring through fastening screws, an operation column is arranged at the axis position of the springs, and the operation column is provided with a groove matched with a tool. Through the detachable combined structure of the supporting ring and the spring, the assembling efficiency of the mechanical seal is remarkably improved, and the manufacturing cost is reduced; in addition, a single damaged spring can be quickly disassembled and replaced, or the whole supporting ring can be replaced, so that the maintenance efficiency is remarkably improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a mechanical seal assembly that improves assembly efficiency. Background Technology

[0002] A mechanical seal assembly 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. The spring is one of the key components in the mechanical seal assembly. It ensures that a certain pressure is always maintained between the moving ring and the pushing ring by continuously applying a constant force, thereby making the sealing surfaces fit tightly and preventing liquid or gas leakage.

[0003] According to the authorized announcement number CN222687312U, a high-temperature resistant mechanical seal assembly is disclosed, including a bushing and a pressure cap disposed on the outside of the bushing. The pressure cap has a cavity inside, and each pressure cap has a channel communicating with the cavity. One channel has a liquid inlet connector installed at the top, and the other channel has a liquid outlet connector installed at the top. A sealing element is movably installed inside the cavity. Multiple springs are arranged in a ring and equidistantly between the sealing element and the pressure cap. A compensation element is movably installed at the bottom inside the pressure cap. A push ring is installed between the compensation element and the sealing element. A second sealing ring is installed on the side wall of the sealing element, and a third sealing ring is installed on both the inner and outer walls of the compensation element. This utility model allows coolant to be introduced into the cavity through the pressure cap, liquid outlet connector, and channels to remove the heat of the springs, preventing the springs from overheating and losing their original performance, which could lead to uneven pressure distribution on the end face of the mechanical seal or even complete failure, thus causing leakage problems.

[0004] In the aforementioned technical solution, multiple springs arranged in a ring at equal intervals are placed between the seal and the gland to provide the necessary preload and compensate for wear on the sealing end face. However, in actual assembly, the increased number of springs inevitably increases the complexity of the assembly process. As assembly time increases, worker negligence frequently leads to springs being left out, affecting the reliability and stability of the sealing device. Furthermore, when the sealing device requires maintenance or spring replacement, the existing structural design requires operators to remove each spring individually, a tedious and time-consuming process that significantly reduces maintenance efficiency and increases maintenance costs. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this context. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the traditional mechanical seal assembly design and provide a product that improves assembly efficiency, maintenance efficiency, and reduces manufacturing costs.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A mechanical seal assembly for improving assembly efficiency includes a bushing, a spring seat fitted onto the bushing, a rotating ring, and a stationary ring. One end of the spring seat has a detachable support ring, and the other end has a push ring fitted onto the bushing. The end face of the support ring has multiple countersunk holes evenly distributed along its circumference. A detachable spring is installed within each countersunk hole. The support ring is detachably connected to the spring seat and the push ring by fastening screws. An operating post is located at the axial position of the spring, and the operating post has a groove for tool engagement. The spring on the spring seat acts on the stationary ring to ensure tight contact between the stationary ring and the rotating ring. The spring on the push ring acts on the spring seat to apply an upward force to the bushing, maintaining a preload between the stationary ring and the rotating ring.

[0008] Preferably, one end of the spring seat is provided with a first recessed groove for accommodating the support ring, the outer wall of the first recessed groove extends to provide a fixing groove, the fixing groove is provided with a mounting hole, the support ring connected to the spring seat is provided with an extension portion and is provided in the fixing groove, and the fastening screw is provided in the extension portion and threadedly connected to the mounting hole.

[0009] Preferably, the other end of the spring seat is provided with a second recess, the second recess is provided with a pressure cap and abuts against the push ring, the second recess is provided with a third recess to accommodate the push ring, the second recess is provided with a positioning pin and inserted into the push ring, a plurality of O-rings are provided between the push ring and the bushing, and an O-ring is provided between the push ring and the third recess.

[0010] Preferably, one end of the bushing is provided with a limiting ring, which is connected to the bushing by a positioning screw and abuts against the pressure cap. The other end of the bushing is provided with a pressure-bearing part for supporting the moving ring. An O-ring is provided between the pressure-bearing part and the moving ring, and a drive pin is provided between the bushing and the moving ring.

[0011] Preferably, a compensation component is provided below one end of the spring seat, including a compensation element and a push ring placed inside the compensation element. A sealing gasket is provided between the push ring and the compensation element. The spring acts on the push ring to make the compensation element and the stationary ring abut against each other tightly, so that the stationary ring and the moving ring maintain a preload. An O-ring is provided between the stationary ring and the compensation element.

[0012] Preferably, the countersunk hole is provided with a threaded hole.

[0013] Preferably, one end of the spring is provided with a base plate, the base plate is provided with a screw portion and is threadedly connected to a threaded hole, and the height of the operating column is lower than the height of the spring.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) This utility model significantly improves the assembly efficiency of mechanical seals by adopting a combination structure of detachable support ring and spring. Compared with the existing technology of placing springs one by one, this solution provides a more efficient and convenient assembly solution. By installing the pre-installed support ring with spring as a whole, the assembly efficiency is further improved, and the phenomenon of missing springs is fundamentally eliminated, thus improving the assembly quality. In addition, the setting of the operating column effectively prevents the spring from shifting its axis during the assembly process, thus avoiding the problem of uneven contact pressure distribution between the moving ring and the stationary ring.

[0017] (2) In terms of maintenance and repair, when it is necessary to maintain or replace the spring, the tool can be inserted into the groove to disassemble and replace the single damaged spring. The operation is simple and quick. By disassembling the fastening screw, the entire support ring and spring assembly can be replaced quickly, thereby significantly improving maintenance efficiency and reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a side cross-sectional view of a mechanical seal assembly for improving assembly efficiency according to the present invention. Figure 1 ;

[0019] Figure 2 This utility model Figure 1 A partially enlarged view A of a mechanical seal assembly designed to improve assembly efficiency;

[0020] Figure 3 This is a side cross-sectional view of a mechanical seal assembly for improving assembly efficiency according to the present invention. Figure 1 ;

[0021] Figure 4 This utility model Figure 3 A partially enlarged view (B) of a mechanical seal assembly designed to improve assembly efficiency;

[0022] Figure 5 This is a schematic diagram of the second groove structure of a mechanical seal assembly for improving assembly efficiency according to the present invention.

[0023] Figure 6 This is a schematic diagram of the spring seat of a mechanical seal assembly for improving assembly efficiency according to this utility model;

[0024] Figure 7 This is an exploded view of the mechanical seal assembly for improving assembly efficiency according to this utility model. Figure 1 ;

[0025] Figure 8 This is an exploded view of the mechanical seal assembly for improving assembly efficiency according to this utility model. Figure 2 ;

[0026] The correspondence between the labels and component names in the attached figures is as follows:

[0027] Reference numerals: 1. Bushing; 2. Spring seat; 3. Rotating ring; 4. Stationary ring; 5. Support ring; 6. Push ring; 7. Gland; 8. O-ring seal; 9. Compensation assembly;

[0028] 11. Limiting ring; 12. Positioning screw; 13. Pressure bearing part; 14. Transmission pin;

[0029] 21. First settling tank; 22. Fixing groove; 23. Mounting hole; 24. Second settling tank; 25. Third settling tank;

[0030] 51. Countersunk hole; 52. Spring; 53. Fastening screw; 54. Extension; 55. Locating pin;

[0031] 511. Threaded hole;

[0032] 521. Operating column; 522. Molded groove; 523. Base plate; 524. Screw section;

[0033] 91. Compensating component; 92. Push ring; 93. Sealing gasket. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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, they should not be construed as limitations on this utility model.

[0036] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] Reference example Figures 1 to 8 A mechanical seal assembly for improving assembly efficiency includes a bushing 1, a spring seat 2 fitted on the bushing 1, a rotating ring 3, and a stationary ring 4. One end of the spring seat 2 is provided with a detachable support ring 5, and the other end is provided with a push ring 6, which is fitted on the bushing 1. The end face of the support ring 5 is provided with a plurality of countersunk holes 51 evenly distributed around the circumference. A detachable spring 52 is provided in the countersunk hole 51. The support ring 5 is detachably connected to the spring seat 2 and the push ring 6 by fastening screws 53. An operating post 521 is provided at the axial position of the spring 52. The operating post 521 is provided with a groove 522 for tool engagement. The spring 52 on the spring seat 2 acts on the stationary ring 4 to make the stationary ring 4 and the rotating ring 3 abut against each other tightly. The spring 52 on the push ring 6 acts on the spring seat 2 to apply an upward force to the bushing 1 to maintain a preload between the stationary ring 4 and the rotating ring 3.

[0038] By adopting a combination structure of detachable support ring 5 and spring 52, the assembly efficiency of mechanical seal is significantly improved. Compared with the existing technology of placing spring 52 one by one, this solution provides a more efficient and convenient assembly solution. By installing the pre-installed support ring 5 with spring 52 as a whole, the assembly efficiency is further improved, and the phenomenon of missing spring 52 is fundamentally eliminated, thus improving the assembly quality. In addition, the setting of operating column 521 effectively prevents the spring 52 from shifting its axis during the assembly process, avoiding the problem of uneven contact pressure distribution between the moving ring 3 and the stationary ring 4.

[0039] It is worth mentioning that one end of the spring seat 2 is provided with a first recess 21 for accommodating the support ring 5. The outer wall of the first recess 21 extends to provide a fixing groove 22. The fixing groove 22 is provided with a mounting hole 23. The support ring 5 connected to the spring seat 2 is provided with an extension 54 and is provided in the fixing groove 22. The fastening screw 53 is provided in the extension 54 and is threaded to the mounting hole 23. The fixing groove 22 and the extension 54 provide a positioning guide for the support ring 5 to enter the first recess 21.

[0040] It is worth mentioning that the other end of the spring seat 2 is provided with a second recess 24. The second recess 24 is provided with a pressure cap 7 and abuts against the push ring 6. The second recess 24 is provided with a third recess 25 to accommodate the push ring 6. The second recess 24 is provided with a positioning pin 55 and is inserted into the push ring 6. Multiple O-rings 8 are provided between the push ring 6 and the bushing 1. The positioning pin 55 prevents the push ring 6 from rotating with the bushing 1. The spring 52 on the push ring 6 applies downward pressure to the third recess 25. The push ring 6 increases the friction between itself and the bushing 1 through the O-rings 8. Therefore, the push ring 6 applies an upward force to the bushing 1, thereby causing the pressure-bearing part 13 to drive the moving ring 3 and the stationary ring 4 to abut tightly, thereby preventing the leakage of the internal liquid medium. Here, the O-rings 8 mainly play an auxiliary sealing role to prevent the medium from leaking from the gap between the pressure cap 7 and the bushing 1.

[0041] It is worth mentioning that one end of the bushing 1 is provided with a limiting ring 11, which is connected to the bushing 1 by a positioning screw 12. The limiting ring 11 abuts against the pressure cover 7. The other end of the bushing 1 is provided with a pressure bearing part 13 for supporting the moving ring 3. An O-ring seal 8 is provided between the pressure bearing part 13 and the moving ring 3. A transmission pin 14 is provided between the bushing 1 and the moving ring 3. The limiting ring 11 prevents the bushing 1 from disengaging from the spring seat 2, and the transmission pin 14 makes the moving ring 3 rotate together with the bushing 1.

[0042] It is worth mentioning that a compensation component 9 is provided below one end of the spring seat 2, including a compensation component 91 and a push ring 92 placed inside the compensation component 91. A sealing gasket 93 is provided between the push ring 92 and the compensation component 91. The spring 52 acts on the push ring 92, so that the compensation component 91 and the stationary ring 4 are tightly abutted against each other, and the stationary ring 4 and the rotating ring 3 are kept under preload. An O-ring seal 8 is provided between the stationary ring 4 and the compensation component 91. Here, the spring 52 provides preload for the compensation component 9, ensuring that the end faces of the stationary ring 4 and the rotating ring 3 are tightly fitted. At the same time, the spring 52 can also compensate for the gap that appears on the sealing end faces of the rotating and stationary rings 4 due to wear through its elastic force, so that the sealing end faces always keep in contact and prevent media leakage.

[0043] It is worth mentioning that the countersunk hole 51 is provided with a threaded hole 511;

[0044] It is worth mentioning that one end of the spring 52 is provided with a base plate 523, and the base plate 523 is provided with a screw part 524, which is threaded to the threaded hole 511. The height of the operating column 521 is lower than the height of the spring 52. The operating column 521 is lower than the spring 52 to avoid interfering with the dynamic compensation of the spring 52 caused by the friction of the moving and stationary rings 4. In terms of maintenance and repair, when it is necessary to maintain or replace the spring 52, a tool can be inserted into the groove 522 to disassemble and replace a single damaged spring 52. The operation is simple and quick. By removing the fastening screws, the entire support ring 5 and spring 52 assembly can be quickly replaced, thereby significantly improving maintenance efficiency and reducing maintenance costs.

[0045] The above design scheme can enable the product to achieve the advantages of improved assembly efficiency, improved maintenance efficiency, and reduced manufacturing costs.

[0046] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A mechanical seal assembly for improving assembly efficiency, comprising a bushing (1), a spring seat (2) fitted onto the bushing (1), a rotating ring (3), and a stationary ring (4), characterized in that: One end of the spring seat (2) is provided with a detachable support ring (5), and the other end is provided with a push ring (6), which is sleeved on the bushing (1). The end face of the support ring (5) is provided with a plurality of countersunk holes (51) evenly distributed along the circumference. A detachable spring (52) is provided in the countersunk hole (51). The support ring (5) is detachably connected to the spring seat (2) and the push ring (6) by fastening screws (53). An operating column (521) is provided at the axial position of the spring (52). The operating column (521) is provided with a groove (522) for tool engagement. The spring (52) on the spring seat (2) acts on the stationary ring (4) to make the stationary ring (4) and the moving ring (3) closely abut against each other. The spring (52) on the push ring (6) acts on the spring seat (2) to apply an upward force to the bushing (1) so that the stationary ring (4) and the moving ring (3) maintain a preload.

2. The mechanical seal assembly for improving assembly efficiency according to claim 1, characterized in that: One end of the spring seat (2) is provided with a first recess (21) for accommodating the support ring (5). The outer wall of the first recess (21) extends to provide a fixing groove (22). The fixing groove (22) is provided with a mounting hole (23). The support ring (5) connected to the spring seat (2) is provided with an extension (54) and is provided in the fixing groove (22). The fastening screw (53) is provided in the extension (54) and is threaded to the mounting hole (23).

3. The mechanical seal assembly for improving assembly efficiency according to claim 1, characterized in that: The other end of the spring seat (2) is provided with a second recess (24). The second recess (24) is provided with a pressure cap (7) and abuts against the push ring (6). The second recess (24) is provided with a third recess (25) to accommodate the push ring (6). The second recess (24) is provided with a positioning pin (55) and inserted into the push ring (6). Multiple O-rings (8) are provided between the push ring (6) and the bushing (1). O-rings (8) are provided between the push ring (6) and the third recess (25).

4. The mechanical seal assembly for improving assembly efficiency according to claim 3, characterized in that: One end of the bushing (1) is provided with a limiting ring (11), which is connected to the bushing (1) by a positioning screw (12). The limiting ring (11) abuts against the pressure cap (7). The other end of the bushing (1) is provided with a pressure bearing part (13) for supporting the moving ring (3). An O-ring seal (8) is provided between the pressure bearing part (13) and the moving ring (3). A transmission pin (14) is provided between the bushing (1) and the moving ring (3).

5. The mechanical seal assembly for improving assembly efficiency according to claim 1, characterized in that: A compensation component (9) is provided below one end of the spring seat (2), including a compensation component (91) and a push ring (92) placed inside the compensation component (91). A sealing gasket (93) is provided between the push ring (92) and the compensation component (91). The spring (52) acts on the push ring (92) to make the compensation component (91) and the stationary ring (4) closely abut against each other, so that the stationary ring (4) and the moving ring (3) maintain a preload. An O-ring (8) is provided between the stationary ring (4) and the compensation component (91).

6. The mechanical seal assembly for improving assembly efficiency according to claim 1, characterized in that: The countersunk hole (51) is provided with a threaded hole (511).

7. The mechanical seal assembly for improving assembly efficiency according to claim 6, characterized in that: One end of the spring (52) is provided with a base plate (523), the base plate (523) is provided with a screw part (524) and is threaded to a threaded hole (511), and the height of the operating column (521) is lower than the height of the spring (52).

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