CN221033967U - Stationary single-end face integrated mechanical seal - Google Patents
Stationary single-end face integrated mechanical seal Download PDFInfo
- Publication number
- CN221033967U CN221033967U CN202323090021.0U CN202323090021U CN221033967U CN 221033967 U CN221033967 U CN 221033967U CN 202323090021 U CN202323090021 U CN 202323090021U CN 221033967 U CN221033967 U CN 221033967U
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- Prior art keywords
- ring
- stationary
- mechanical seal
- static
- threaded fastener
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- 238000007789 sealing Methods 0.000 claims abstract description 40
- 230000003068 static effect Effects 0.000 claims abstract description 39
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Abstract
The utility model provides a static single-end face integrated mechanical seal, which comprises a static ring and a dynamic ring, wherein the end faces of the static ring are connected, one end of the static ring is provided with a backstop ring and a spring for providing elastic compensation for the mechanical seal, and the static single-end face integrated mechanical seal has the advantages of the static mechanical seal, can adapt to the application environment of high rotating speed and keeps lower end face specific pressure under the use condition of high pressure. The retaining ring is connected with the connecting disc of the connecting device through the threaded fastener, the compression amount of the spring can be adjusted by rotating the threaded fastener, and meanwhile, the threaded fastener has the function of radially limiting the stationary ring, so that the whole mechanical sealing device can form a container type structure, and the device has the advantage of convenience in installation.
Description
Technical Field
The utility model relates to a mechanical sealing device, in particular to a static single-end-face integrated mechanical seal.
Background
The mechanical seal is a common mechanical element, and can effectively seal grease, fuel oil and gas in equipment fluid so as to ensure the safety of the operation process of the equipment. The mechanical seal consists of a static ring and a moving ring, and a sealing end face is formed between the moving ring and the static ring. Because the axial directions of the movable ring and the static ring and the center of the main shaft have errors, the sealing end surfaces of the movable ring and the static ring can possibly leak in the working process. In order to maintain the dynamic sealing capability of the stationary ring and the moving ring in the working process, a spring seat loaded with a spring is arranged at one end of the moving ring in a common mechanical seal, and the spring is utilized to elastically compensate the moving ring. Therefore, the spring in the traditional mechanical seal can axially rotate along with the movable ring, and after long-time use, the spring element is possibly invalid, and the stress of the end faces of the static ring and the movable ring is possibly uneven, so that the sealing device is finally invalid.
The static mechanical seal is characterized in that a spring is arranged at one end of a static ring and does not rotate along with a main shaft. Because the spring and the stationary ring are relatively static, the abrasion between the movable ring and the stationary ring can be reduced, and the device is suitable for high-rotation-speed working occasions. However, the conventional static mechanical seal structure is complex, and needs professional personnel to assemble the mechanical seal, which is not beneficial to the self-maintenance of the enterprise technicians, so that the structure of the static mechanical seal in the prior art needs to be improved.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a static single-end face integrated mechanical seal, which comprises a static ring sleeved on a main shaft and a moving ring, wherein one end of the moving ring is contacted with the static ring to form single-end seal for equipment, and the utility model is characterized in that: the outer side of the stationary ring is also provided with a stationary ring fixing mechanism, and the stationary ring fixing mechanism comprises a retaining ring, a connecting disc, a bushing and a threaded fastener;
The retaining ring and the connecting disc are arranged at one end of the stationary ring, which is opposite to the movable ring, a spring is connected between the retaining ring and the connecting disc, and the retaining ring is connected with the stationary ring;
The bushing and the threaded fastener are respectively positioned at the inner side and the outer side of the stationary ring, the retaining ring is connected with the connecting disc through the threaded fastener, the bushing is abutted against the inner peripheral surface of the stationary ring, the thread on the threaded fastener is provided with a limiting piece, and the limiting piece is abutted against the outer peripheral surface of the stationary ring.
Further, the threaded fastener is a cylindrical hexagon screw, and the head of the hexagon screw forms the limiting piece.
Further, the outer peripheral surface of the stationary ring is provided with a plurality of mounting grooves extending along the radial direction of the stationary ring, and the limiting piece is positioned in the mounting groove and abutted against the groove edges of the mounting groove.
Further, a first sealing ring is arranged on the non-return ring, and the first sealing ring is filled between the bushing and the stationary ring.
Further, a packing ring is sleeved on the outer side of the main shaft, a compression ring which is arranged in a circumferential direction is arranged in the middle of the packing ring, and one side, away from the movable ring, of the connecting disc and the lining is connected with the compression ring.
Further, a second sealing ring is further arranged on the pressing ring and is located between the connecting disc and the bushing.
Further, a moving ring fixing mechanism is further arranged, the moving ring fixing mechanism comprises a transmission ring connected to one side, far away from the stationary ring, of the moving ring, and the transmission ring and the moving ring are connected into a whole through a first fastening bolt.
Further, the outer peripheral surface of the driving ring is sleeved with a locking inner ring and a locking outer ring which are in threaded connection through second fastening bolts, and opposite end surfaces on the locking inner ring and the locking outer ring are respectively provided with a locking guide surface which is obliquely arranged.
Further, a third sealing ring is sleeved on the outer side of the main shaft, and the third sealing ring is positioned between the movable ring and the transmission ring.
The utility model provides a static single-end face integrated mechanical seal, which comprises a static ring and a dynamic ring, wherein the end faces of the static ring are connected, one end of the static ring is provided with a backstop ring and a spring for providing elastic compensation for the mechanical seal, and the static single-end face integrated mechanical seal has the advantages of the static mechanical seal, can adapt to the application environment of high rotating speed and keeps lower end face specific pressure under the use condition of high pressure. The retaining ring is connected with the connecting disc of the connecting device through the threaded fastener, the compression amount of the spring can be adjusted by rotating the threaded fastener, and meanwhile, the threaded fastener has the function of radially limiting the stationary ring, so that the whole mechanical sealing device can form a container type structure, and the device has the advantage of convenience in installation.
Drawings
FIG. 1 is a schematic illustration of the structure of a stationary single-ended cartridge type mechanical seal of the present utility model;
Fig. 2 is a schematic view of the location of the mounting groove on the stationary ring.
Reference numerals: the sealing device comprises a stationary ring 1, a movable ring 2, a retaining ring 3, a connecting disc 4, a spring 5, a bushing 6, a threaded fastener 7, a mounting groove 8, a first sealing ring 9, a packing ring 10, a compression ring 11, a second sealing ring 12, a transmission ring 13, a first fastening bolt 14, a locking inner ring 15, a locking outer ring 16, a second fastening bolt 17 and a third sealing ring 18.
Detailed Description
The stationary single-end face integrated mechanical seal shown in fig. 1 comprises a stationary ring 1 and a movable ring 2 which are sleeved on a main shaft, wherein one end of the movable ring 2 is contacted with the stationary ring 1 to form a single-end seal for equipment. Wherein the side of the mechanical seal close to the stationary ring 1 is a medium side, and the side close to the movable ring 2 is an atmosphere side. Still be provided with quiet ring fixed establishment in the outside of quiet ring 1, quiet ring fixed establishment is including setting up in quiet ring 1 and being on the contrary in retaining ring 3 and the connection pad 4 of 2 one ends of rotating ring, be connected with spring 5 between retaining ring 3 and the connection pad 4, spring 5 has compression potential energy at the during operation.
The retaining ring 3, the connecting disc 4 and the spring 5 arranged between the retaining ring and the connecting disc form a static structure of mechanical seal, wherein the connecting disc 4 is used for fixing the position of the sealing device relative to the equipment and is connected to the equipment through a connecting hole on the connecting disc 4. The spring 5 can provide elastic compensation for the stationary ring 1, and is in a compressed state in a normal state, so that dynamic sealing balance is kept between the stationary ring 1 and the movable ring 2; the retaining ring 3 is pressed against the stationary ring 1 by a spring 5, which provides support for the stationary ring 1 during operation. The arrangement of the spring 5 at one end of the stationary ring 1 enables the mechanical seal to be adapted to a higher rotational speed environment than conventional mechanical seals, the spring 5 being only stretched and compressed once during a revolution of the spindle. The direction of the compression force of the spring 5 coincides with the direction of the medium pressure, and even in a medium environment of positive pressure, the seal gap between the stationary ring 1 and the moving ring 2 is not opened.
The static ring fixing mechanism further comprises a bushing 6 and a threaded fastener 7, wherein the bushing 6 and the threaded fastener 7 are respectively positioned on the inner side and the outer side of the static ring 1, and the retaining ring 3 is connected with the connecting disc 4 through the threaded fastener 7. The retaining ring 3 and the connecting disc 4 are fixed into a unified whole by the threaded fastener 7, and elastic potential energy stored in the spring 5 can be adjusted by rotating the threaded fastener 7.
The threaded fastener 7 also has the function of positioning the stationary ring 1, and as described above, the moving ring 2 and the retaining ring 3 limit the movement of the stationary ring 1 along the axial direction of the spindle, and the bushing 6 and the threaded fastener 7 limit the position of the stationary ring 1 from the radial direction of the spindle. Specifically, the bushing 6 abuts against the inner peripheral surface of the stationary ring 1, a limiting piece is arranged on the thread on the threaded fastener 7, the limiting piece abuts against the outer peripheral surface of the stationary ring 1, and the limiting piece and the bushing 6 jointly apply radial pressure to the stationary ring 1. In this embodiment, the threaded fastener 7 is a cylindrical hexagon screw, and the head of the hexagon screw forms the above-mentioned limiting member, so that the hexagon screw has the capability of radially limiting the stationary ring 1 and connecting the retaining ring 3 and the connecting plate.
Further, as shown in fig. 2, the outer peripheral surface of the stationary ring 1 is provided with a plurality of mounting grooves 8 extending along the radial direction of the stationary ring 1, and the limiting members are positioned in the mounting grooves 8 and abut against the groove edges of the mounting grooves 8. The mounting groove 8 can restrict the position of the threaded fastener 7, and then the mounting accuracy of the threaded fastener 7 and the stability when the device is operated are enhanced, and meanwhile, the threaded fastener 7 is clamped in the mounting groove 8, so that the circumferential rotation of the stationary ring 1 can be prevented. Further, a first sealing ring 9 is arranged on the retaining ring 3, the first sealing ring 9 is filled between the bushing 6 and the stationary ring 1, the first sealing ring 9 can fix the position of the stationary ring 1, the stationary ring 1 is arranged at the position of the first sealing ring 9, and the first sealing ring 9 and the bushing 6 apply resistance to the stationary ring 1 from the inner side, so that the stationary ring 1 cannot fall off from the retaining ring 3.
Further, a packing ring 10 is sleeved outside the main shaft, a pressing ring 11 which is arranged in a circumferential direction is arranged in the middle of the packing ring 10, and one side, away from the movable ring 2, of the connecting disc 4 and the lining 6 is connected with the pressing ring 11. In the embodiment, the inner side of the static ring 1 replaces a shaft sleeve sleeved on the main shaft in the conventional mechanical seal by using the packing ring 10, the inner side surface of the bushing 6 and the end surface of the connecting disc 4 are fastened by using the packing ring 10, friction between a static ring assembly and the connecting end surface of the main shaft and equipment can be reduced, and the cost is saved. The compression ring 11 is also provided with a second sealing ring 12, and the second sealing ring 12 is positioned between the connecting disc 4 and the bushing 6. The first sealing ring 9 can stabilize the positions of the lining 6 and the stationary ring 1 on the retaining ring 3, and the second sealing ring 12 can stabilize the positions of the connecting disc 4 and the lining 6 on the packing ring 10, so that the whole mechanical seal structure is more stable.
The movable ring fixing mechanism is further arranged, and comprises a transmission ring 13 connected to one side, far away from the stationary ring 1, of the movable ring 2, and the transmission ring 13 is connected with the movable ring 2 into a whole through a first fastening bolt 14. The outer peripheral surface of the driving ring 13 is sleeved with a locking inner ring 15 and a locking outer ring 16 which are in threaded connection through a second fastening bolt 17, opposite end surfaces on the locking inner ring 15 and the locking outer ring 16 are respectively provided with a locking guide surface which is obliquely arranged, the second fastening bolt 17 is rotated, the distance between the locking inner ring 15 and the locking outer ring 16 is gradually reduced due to the action of the locking guide surfaces, and the driving ring 13 applies gradually increased internal pressure, so that the purpose of locking the moving ring 2 is finally achieved. Further, a third sealing ring 18 is sleeved on the outer side of the main shaft, and the third sealing ring 18 is located between the movable ring 2 and the transmission ring 13.
The assembly process of this embodiment is as follows: positioning the bushing 6 and the connecting disc 4 on the packing ring 10, loading the spring 5 and the retaining ring 3 on the connecting plate, and loading the stationary ring 1 in the retaining ring 3; the stationary ring 1 does not fall off the retaining ring 3 due to the action of the first sealing ring 9 and the bushing 6. Tightening the threaded fastener 7 on the retaining ring 3 endeavours to compress the spring 5, fixing the position between the web, the stationary ring 1, the bushing 6, the retaining ring 3 relative to one another, thereby forming a complete stationary ring assembly. And then the movable ring 2 is pressed on the surface of the static ring 1 through a movable ring fixing mechanism formed by the locking inner ring 15, the locking outer ring 16 and the transmission ring 13, so that the whole sealing device forms a container type structure. When the sealing device is used, the sealing of the movable ring 2 and the static ring 1 can be automatically completed only by sleeving the whole sealing device on the main shaft of the device, fixing the position of the connecting disc 4, and unscrewing the threaded fastener 7 to the required length.
The embodiment can bear higher pressure in the kettle than the traditional external mechanical seal through the design of the static container type structure, and is suitable for high-rotation-speed working occasions. In addition, the packing ring 10 is filled on the surfaces of the connecting disc 4 and the equipment, and the packing ring 10, the bushing 6, the stationary ring 1, the movable ring 2 and the like sleeved on the outer side of the main shaft are made of nonmetallic materials so as to be suitable for dielectric materials such as silicon carbide, glass lining and polytetrafluoroethylene, so that the packing ring is suitable for almost all application scenes.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (9)
1. The utility model provides a stationary single-end face collection dress formula mechanical seal, includes static ring (1) and moving ring (2) of suit in the main shaft, the one end and the static ring (1) of moving ring (2) contact in order to form the single-end seal to equipment, its characterized in that: the outer side of the stationary ring (1) is also provided with a stationary ring fixing mechanism, and the stationary ring fixing mechanism comprises a retaining ring (3), a connecting disc (4), a bushing (6) and a threaded fastener (7);
The retaining ring (3) and the connecting disc (4) are arranged at one end of the stationary ring (1) opposite to the movable ring (2), a spring (5) is connected between the retaining ring (3) and the connecting disc (4), and the retaining ring (3) is connected with the stationary ring (1);
The lining (6) and the threaded fastener (7) are respectively positioned at the inner side and the outer side of the static ring (1), the retaining ring (3) is connected with the connecting disc (4) through the threaded fastener (7), the lining (6) is abutted against the inner peripheral surface of the static ring (1), a limiting part is arranged on threads on the threaded fastener (7), and the limiting part is abutted against the outer peripheral surface of the static ring (1).
2. The stationary single-ended cartridge mechanical seal of claim 1, wherein: the threaded fastener (7) is a cylindrical head hexagonal screw, and the head of the hexagonal screw forms the limiting piece.
3. The stationary single-ended cartridge mechanical seal of claim 1, wherein: the outer peripheral surface of the stationary ring (1) is provided with a plurality of mounting grooves (8) extending along the radial direction of the stationary ring (1), and the limiting piece is positioned in the mounting grooves (8) and abutted against the groove edges of the mounting grooves (8).
4. The stationary single-ended cartridge mechanical seal of claim 1, wherein: the anti-return ring (3) is provided with a first sealing ring (9), and the first sealing ring (9) is filled between the bushing (6) and the stationary ring (1).
5. The stationary single-ended cartridge mechanical seal of claim 1, wherein: the packing ring (10) is sleeved on the outer side of the main shaft, a pressing ring (11) which is arranged in a circumferential direction is arranged in the middle of the packing ring (10), and one side, away from the movable ring (2), of the connecting disc (4) and the lining (6) is connected with the pressing ring (11).
6. The stationary single-ended cartridge type mechanical seal of claim 5, wherein: the compression ring (11) is also provided with a second sealing ring (12), and the second sealing ring (12) is positioned between the connecting disc (4) and the bushing (6).
7. The stationary single-ended cartridge mechanical seal of claim 1, wherein: the movable ring fixing mechanism is further arranged, and comprises a transmission ring (13) connected to one side, far away from the stationary ring (1), of the movable ring (2), and the transmission ring (13) and the movable ring (2) are connected into a whole through a first fastening bolt (14).
8. The stationary single-ended cartridge type mechanical seal of claim 7, wherein: the outer peripheral surface of the transmission ring (13) is sleeved with a locking inner ring (15) and a locking outer ring (16) which are in threaded connection through a second fastening bolt (17), and opposite end surfaces on the locking inner ring (15) and the locking outer ring (16) are respectively provided with a locking guide surface which is obliquely arranged.
9. The stationary single-ended cartridge type mechanical seal of claim 7, wherein: the outer side of the main shaft is sleeved with a third sealing ring (18), and the third sealing ring (18) is positioned between the movable ring (2) and the transmission ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323090021.0U CN221033967U (en) | 2023-11-16 | 2023-11-16 | Stationary single-end face integrated mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323090021.0U CN221033967U (en) | 2023-11-16 | 2023-11-16 | Stationary single-end face integrated mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221033967U true CN221033967U (en) | 2024-05-28 |
Family
ID=91167563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323090021.0U Active CN221033967U (en) | 2023-11-16 | 2023-11-16 | Stationary single-end face integrated mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221033967U (en) |
-
2023
- 2023-11-16 CN CN202323090021.0U patent/CN221033967U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |