CN218669911U - Rotating ring and sealing device with same - Google Patents
Rotating ring and sealing device with same Download PDFInfo
- Publication number
- CN218669911U CN218669911U CN202222264784.1U CN202222264784U CN218669911U CN 218669911 U CN218669911 U CN 218669911U CN 202222264784 U CN202222264784 U CN 202222264784U CN 218669911 U CN218669911 U CN 218669911U
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- ring
- sealing
- rotating ring
- wall
- groove
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- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 238000009434 installation Methods 0.000 claims abstract description 14
- 210000004907 gland Anatomy 0.000 claims description 28
- 230000003068 static effect Effects 0.000 claims description 28
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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- Sealing Devices (AREA)
Abstract
The utility model provides a rotating ring, including the rotating ring body, the axial terminal surface of rotating ring body one end is sealed mill flour, is equipped with the installation step of indent on the radial outer wall of the rotating ring body other end, is equipped with the ring channel of indent on the sealed mill flour, set up a plurality of connecting holes that distribute and communicate with the ring channel along circumference on the radial outer wall of rotating ring body. The utility model also discloses a sealing device of having above-mentioned rotating ring, the structure through connecting hole and ring channel realizes the quick lubrication of sealed face, guarantees better sealing performance. The utility model discloses a rotating ring and have sealing device of this rotating ring is applied to the lubrication of the sealed face of assurance that also can be fine in the low operating mode of medium liquid level and the formation of sealed mill flour to sealing performance that remains stable.
Description
Technical Field
The utility model relates to a mechanical seal technical field particularly, relates to a rotating ring and have sealing device of this rotating ring.
Background
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the rotating shaft penetrates inside and outside the apparatus, so that there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, a shaft sealing device for preventing leakage is necessary. The shaft seal has many kinds, and the mechanical seal has advantages such as a small leakage amount and a long life, and therefore the mechanical seal is the most important shaft seal method in these devices.
At present, in the mechanical seal in the field of compressors, a working condition exists, the oil level in a medium cavity is low, the oil level is often only immersed in a small part of the lower end of a horizontal seal end face, and the grinding surface of a seal movable ring is a complete plane. In addition, the mechanical seal applied to the working conditions is generally a conventional single-end-face mechanical seal, because the oil level is low, the lubrication is poor, the cooling is insufficient, the sealing ring generates local thermal deformation, and accordingly a sealing ground liquid film is damaged to cause leakage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: the movable ring and the sealing device with the movable ring overcome at least one defect in the prior art, and can well ensure the lubrication of a sealing surface and the formation of a sealing grinding surface when being applied to the working condition of low medium liquid level, thereby keeping stable sealing performance.
In order to solve the problem, the utility model provides a rotating ring, including the rotating ring body, the axial terminal surface of rotating ring body one end is sealed mill flour, be equipped with the installation step of indent on the radial outer wall of the rotating ring body other end, be equipped with the ring channel of indent on the sealed mill flour, set up on the radial outer wall of rotating ring body a plurality of along circumference distribute and with the connecting hole of ring channel intercommunication.
Compared with the prior art, the moving ring of the utility model has the advantages that:
the utility model discloses a rotating ring structure, there is a ring channel at the rotating ring terminal surface processing, and the terminal surface slot lets the machine seal of original single terminal surface become the structure of similar inside and outside radial double-ended face like this to there is radial aperture on the external diameter to communicate with the ring channel, and a small amount of oil can permeate the ring channel through radial aperture before the start, seals the inner and outer lane, and the special one is that the inner circle is sealed to lubricate; after the operation, the outer ring seal is used as the first seal to seal oil, normally leaked trace oil leaks into the middle annular groove from outside to inside in the radial direction, most of the oil can be thrown out of the sealing ring again under the action of centrifugal force through the radial small holes, and a small part of the oil can permeate into the inner ring sealing surface again to be used as a sealing lubricating liquid film to ensure the normal work of the annular surface.
As an improvement, the plurality of connecting holes are arranged along the direction perpendicular to the axis of the movable ring body, and the inner wall of each connecting hole, which is far away from the seal grinding surface, and the bottom wall of the annular groove are positioned on the same straight line. In the improved structure, the connecting holes and the annular groove are arranged at positions so that the medium leaked by the movable ring in the operation process can be better thrown out of the connecting holes.
In addition, the utility model also provides a sealing device, including axle sleeve and gland, the outside of one end of the axle sleeve is equipped with annular installation boss, the gland suit is in the outside of the other end of the axle sleeve, the installation boss is close to one end of the gland is equipped with the rotating ring mounting groove of indent, the rotating ring mounting groove is equipped with the rotating ring of any one of the above-mentioned structures; one end of the gland close to the movable ring is provided with a static ring which can slide along the axial direction, and one end of the static ring far away from the gland is abutted against the sealing grinding surface of the movable ring in a manner of relative rotation along the circumferential direction; one end of the gland, which is far away from the movable ring, is detachably provided with a plurality of limiting blocks, and the radial inner ends of the limiting blocks are inserted into a preset positioning groove on the outer part of the shaft sleeve.
In the sealing device structure, the movable ring with the annular groove and the plurality of connecting holes is adopted, so that the sealing device has better sealing performance and lubricating performance when being applied to a compression working condition with less media; in addition, in the sealing structure, the corresponding framework oil seal is further arranged on the gland, when the main seal has a leakage risk, the framework oil seal can play a role of temporarily sealing a medium, the leaked medium is prevented from directly flowing to an atmosphere end, and meanwhile, the buffering time provided for subsequent replacement and maintenance of the sealing device is provided.
Improved again, the gland is close the radial inboard of rotating ring one end is provided with quiet ring mounting groove, quiet ring is kept away from the one end sliding fit of rotating ring is in the quiet ring mounting groove, just quiet ring with be equipped with the elastic compensation subassembly between the quiet ring mounting groove bottom. In the above-mentioned improvement structure, adopt quiet ring compensation structure, quiet ring, elasticity compensation assembly all keep motionless promptly to make the compensation force of elasticity compensation element more steady, reliable.
In another improvement, the stationary ring mounting groove is an inward concave annular groove, a sealing groove is arranged on the inner side of one end of the stationary ring, which is far away from the moving ring, and a sealing ring is assembled between the side wall of the sealing groove and the radial inner wall of the annular groove, so that the inner ring of the stationary ring is in sealing fit with the radial inner side wall of the annular groove; and a check ring is sleeved on the radial inner wall of the annular groove, one end of the check ring is abutted against the bottom of the static ring mounting groove, and the other end of the check ring is assembled in the sealing groove in a sliding manner. In the improved structure, the mounting groove for mounting the static ring is arranged as the annular groove, so that the structure is more stable after the mounting; and be equipped with O type sealing washer between the corresponding lateral wall of quiet ring sum ring channel, the leakproofness when further guaranteeing quiet ring to slide, in addition can guarantee through the setting of retaining ring structure that O type sealing washer can not extruded the seal groove, further guarantees sealing performance's stability.
And the elastic compensation assembly comprises a plurality of springs, a plurality of spring holes are uniformly distributed along the circumferential direction at the bottom of the static ring installation groove, one end of each spring is respectively accommodated in the corresponding spring hole, the end part of each spring is abutted against the bottom of the corresponding spring hole, and the other end of each spring is abutted against one end of the static ring, which is far away from the movable ring. In the above-mentioned improvement structure, the spring that sets up is equallyd divide for a plurality of to each spring is all spacing through the spring hole on the gland, stability when guaranteeing the spring compression, and then makes each spring act on more balanced and steady of compensation force on quiet ring terminal surface.
And the end part of the static ring, which is far away from one end of the dynamic ring, is further improved, and one end of each spring, which is far away from the spring hole, is abutted against the gasket. In the improved structure, the arrangement of the gasket ensures that the pressure of each spring acting on the end surface of the static ring is not a plurality of points but the acting force on the whole annular surface, thereby better ensuring the stability of the compensation force and improving the stability of the sealing performance of the sealing surface.
And the outer wall of the shaft sleeve is provided with a chromium oxide coating at the position matched with the framework oil seal. In the above-mentioned improvement structure, the position spraying chromic oxide coating that corresponds with the skeleton oil blanket on the axle sleeve outer wall promotes the wear resistance of axle sleeve outer wall, improves whole sealing device's life.
Drawings
FIG. 1 is a schematic view of a half-section structure of a movable ring of the present invention;
FIG. 2 is a front view of the movable ring of the present invention;
fig. 3 is a schematic view of a half-section structure of the sealing device of the present invention;
fig. 4 is a right side view of the sealing device of fig. 3.
Description of the reference numerals:
1. a rotating ring body; 1.1, sealing and grinding the surface; 1.2, mounting a step; 1.3, an annular groove; 1.4, connecting holes; 2. a shaft sleeve; 2.1, positioning a groove; 3. a gland; 3.1, a static ring mounting groove; 3.2, assembling grooves; 3.3, spring holes; 4. mounting a boss; 4.1, a movable ring mounting groove; 5. a stationary ring; 5.1, sealing grooves; 6. a limiting block; 7. framework oil seal; 8. a seal ring; 9. a retainer ring; 10. a spring; 11. and (6) a gasket.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 and 2, the utility model provides a rotating ring, it includes rotating ring body 1, and the axial terminal surface of 1 one end of rotating ring body is sealed mill flour, is equipped with the installation step 1.2 of indent on the radial outer wall of the 1 other end of rotating ring body, is equipped with the ring channel 1.3 of indent on the sealed mill flour, has seted up a plurality of connecting holes 1.4 that distribute and communicate with ring channel 1.3 along circumference on the radial outer wall of rotating ring body 1. More specifically, a plurality of connecting holes 1.4 in the above-mentioned structure all set up along the axis direction of perpendicular to rotating ring body 1, and each connecting hole 1.4 is kept away from the inner wall of sealed mill face and is located the collinear with the diapire of ring channel 1.3, see 1 specifically.
In addition, as shown in fig. 3 and 4, the utility model also provides a sealing device, which comprises a shaft sleeve 2 and a gland 3, wherein an annular mounting boss 4 is arranged outside one end of the shaft sleeve 2, the gland 3 is sleeved outside the other end of the shaft sleeve 2, one end of the mounting boss 4 close to the gland 3 is provided with an inward-concave moving ring mounting groove 4.1, and a moving ring with any one of the above structural forms is arranged in the moving ring mounting groove 4.1; in addition, a static ring 5 which can slide along the axial direction is assembled at one end of the gland 3 close to the dynamic ring, and one end of the static ring 5 far away from the gland 3 is abutted with the sealing grinding surface of the dynamic ring in a relatively rotatable manner along the circumferential direction to form a sealing friction pair; one end detachably that the rotating ring was kept away from to gland 3 is provided with a plurality of stoppers 6, and the radial inner of each stopper 6 is pegged graft in 2 outside predetermined constant head tank 2.1 on the axle sleeve to realized that axle sleeve 2, gland 3, rotating ring and quiet ring 5 are an integral structure along the axial equipment, made this integral sealing device can realize the whole operation of tearing open of dress in the compressor installation cavity, improved the installation effectiveness, reduced the installation degree of difficulty.
In the above structure, it should be noted that when the whole set of sealing device is installed in the installation cavity of the compressor and the spring 10 is located at the set working height, each limiting block 6 needs to be removed; in other words, the stopper 6 mainly serves to limit the working height of each spring 10 during assembly and temporarily axially limit each component during assembly. In addition, each limiting block 6 is detachably connected with the end face of the gland 3 through corresponding connecting bolts.
A static ring mounting groove 3.1 is formed in the radial inner side of one end, close to the movable ring, of the gland 3, one end, far away from the movable ring, of the static ring 5 is in sliding fit in the static ring mounting groove 3.1, and an elastic compensation assembly is arranged between the static ring 5 and the bottom of the static ring mounting groove 3.1; more specifically, the elastic compensation subassembly in this embodiment includes a plurality of springs 10, and quiet ring mounting groove 3.1 bottom is equipped with a plurality of spring holes 3.3 along circumference equipartition, and the one end of each spring 10 holds respectively in the spring hole 3.3 that corresponds and its tip all with spring hole 3.3 bottom looks butt, and the other end of each spring 10 all keeps away from the one end looks butt of rotating ring with quiet ring 5.
In the structure, in order to further ensure the working stability of each spring 10, a gasket 11 is further arranged at the end part of the stationary ring 5 far away from one end of the movable ring, and one end of each spring 10 far away from the spring hole 3.3 is abutted against the gasket 11.
On the other hand, the static ring mounting groove 3.1 in the structure is an inward concave annular groove 1.3, the inner side of one end, away from the moving ring, of the static ring 5 is provided with a sealing groove 5.1, and an O-shaped sealing ring 8 is assembled between the side wall of the sealing groove 5.1 and the radial inner wall of the annular groove 1.3 so as to realize the sealing fit of the inner ring of the static ring 5 and the radial inner side wall of the annular groove 1.3; still be equipped with retaining ring 9 on the radial inner wall of ring channel 1.3, the one end and the quiet ring mounting groove 3.1 bottom butt of retaining ring 9, the other end sliding fit of retaining ring 9 is to in the seal groove 5.1, retaining ring 9 setting here is mainly in order to prevent 8 roll-off seal grooves 5.1 of O type sealing washer, guarantees the leakproofness of quiet ring 5 when sliding in ring channel 1.3.
In addition, as shown in fig. 3, a fitting groove 3.2 is further arranged on the radial inner side of one end, away from the moving ring, of the gland 3, a framework oil seal 7 is installed in the fitting groove 3.2, the inner side wall of the framework oil seal 7 is in relatively rotatable fit with the outer wall of the shaft sleeve 2, and after the framework oil seal 7 is arranged, when a sealing friction pair leaks, the sealing effect of temporarily blocking a medium can be achieved, so that temporary transition time is provided for replacement of a sealing device; in addition, in order to avoid abrasion of the outer wall of the shaft sleeve 2 in the relative sliding process with the framework oil seal 7, a chromium oxide coating is arranged at the matching position of the outer wall of the shaft sleeve 2 and the framework oil seal 7 in the structure, so that the abrasion resistance of the outer wall of the shaft sleeve 2 is improved.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present disclosure.
Claims (8)
1. The utility model provides a rotating ring, includes rotating ring body (1), the axial terminal surface of rotating ring body (1) one end is sealed mill face, be equipped with the installation step (1.2) of indent on the radial outer wall of rotating ring body (1) other end, its characterized in that: the seal grinding surface is provided with an inwards concave annular groove (1.3), and the radial outer wall of the movable ring body (1) is provided with a plurality of connecting holes (1.4) which are distributed along the circumferential direction and communicated with the annular groove (1.3).
2. The rotating ring according to claim 1, wherein: the connecting holes (1.4) are arranged along the direction perpendicular to the axis of the movable ring body (1), and the inner wall, away from the sealing grinding surface, of each connecting hole (1.4) and the bottom wall of the annular groove (1.3) are located on the same straight line.
3. The utility model provides a sealing device, includes axle sleeve (2) and gland (3), the outside of axle sleeve (2) one end is equipped with annular installation boss (4), gland (3) suit is in the outside of axle sleeve (2) other end, installation boss (4) are close the one end of gland (3) is equipped with the rotating ring mounting groove (4.1) of indent, its characterized in that: the moving ring mounting groove (4.1) is internally provided with a moving ring as claimed in claim 1 or 2; a static ring (5) which can slide along the axial direction is assembled at one end of the gland (3) close to the dynamic ring, and one end of the static ring (5) far away from the gland (3) is abutted with the sealing grinding surface of the dynamic ring in a manner of relative rotation along the circumferential direction; a plurality of limiting blocks (6) are detachably arranged at one end, far away from the moving ring, of the gland (3), and the radial inner end of each limiting block (6) is inserted into a preset positioning groove (2.1) on the outer portion of the shaft sleeve (2); keep away from gland (3) the radial inboard of rotating ring one end is provided with and joins in marriage mounting groove (3.2), install skeleton oil blanket (7) in joining in marriage mounting groove (3.2), the inside wall of skeleton oil blanket (7) with the outer wall pivoted cooperation relatively of axle sleeve (2).
4. The sealing device of claim 3, wherein: gland (3) are nearly the radial inboard of rotating ring one end is provided with quiet ring mounting groove (3.1), quiet ring (5) are kept away from the one end sliding fit of rotating ring is in quiet ring mounting groove (3.1), just quiet ring (5) with be equipped with the elastic compensation subassembly between quiet ring mounting groove (3.1) bottom.
5. The sealing device of claim 4, wherein: the static ring mounting groove (3.1) is an inwards concave annular groove (1.3), a sealing groove (5.1) is arranged on the inner side of one end, away from the moving ring, of the static ring (5), and an O-shaped sealing ring (8) is arranged between the side wall of the sealing groove (5.1) and the radial inner wall of the annular groove (1.3) in a matched mode, so that the inner ring of the static ring (5) is in sealing fit with the radial inner side wall of the annular groove (1.3); the radial inner wall of the annular groove (1.3) is further sleeved with a check ring (9), one end of the check ring (9) is abutted to the bottom of the static ring mounting groove (3.1), and the other end of the check ring (9) is assembled into the sealing groove (5.1) in a sliding mode.
6. The sealing device according to claim 4 or 5, wherein: the elastic compensation assembly comprises a plurality of springs (10), a plurality of spring holes (3.3) which are uniformly distributed along the circumferential direction are formed in the bottom of the static ring installation groove (3.1), one end of each spring (10) is accommodated in the corresponding spring hole (3.3) respectively, the end part of each spring is abutted against the bottom of the corresponding spring hole (3.3), and the other end of each spring (10) is abutted against one end, far away from the moving ring, of the static ring (5).
7. The sealing device of claim 6, wherein: the end part of the static ring (5) far away from one end of the dynamic ring is further provided with a gasket, and one end of each spring (10) far away from the spring hole (3.3) is abutted against the gasket.
8. The sealing device of claim 3, wherein: and a chromium oxide coating is arranged at the matching part of the outer wall of the shaft sleeve (2) and the framework oil seal (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222264784.1U CN218669911U (en) | 2022-08-26 | 2022-08-26 | Rotating ring and sealing device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222264784.1U CN218669911U (en) | 2022-08-26 | 2022-08-26 | Rotating ring and sealing device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218669911U true CN218669911U (en) | 2023-03-21 |
Family
ID=85555654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222264784.1U Active CN218669911U (en) | 2022-08-26 | 2022-08-26 | Rotating ring and sealing device with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218669911U (en) |
-
2022
- 2022-08-26 CN CN202222264784.1U patent/CN218669911U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 65, Mingke Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province, 315191 Patentee after: Ningbo Tiangong Fluid Technology Co.,Ltd. Country or region after: China Address before: No. 65, Mingke Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province, 315191 Patentee before: NINGBO TIANGONG MACHINERY SEALING CO.,LTD. Country or region before: China |