CN210423711U - Split type internal and external spiral mechanical sealing device - Google Patents
Split type internal and external spiral mechanical sealing device Download PDFInfo
- Publication number
- CN210423711U CN210423711U CN201921342442.9U CN201921342442U CN210423711U CN 210423711 U CN210423711 U CN 210423711U CN 201921342442 U CN201921342442 U CN 201921342442U CN 210423711 U CN210423711 U CN 210423711U
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- Prior art keywords
- oil
- wall
- movable
- slinger
- retainer
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- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 230000003068 static effect Effects 0.000 claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 87
- 239000010687 lubricating oil Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A split type internal and external spiral mechanical sealing device is characterized in that a rotating shaft connecting section (5) and a ring sleeve section (6) are arranged on the inner wall of a movable oil retainer (1), an oil return hole (7) is formed in the ring sleeve section (6), an oil return spiral line (8) is arranged on the outer wall of the movable oil retainer (1), an oil retaining eave (9) is arranged on the outer edge of the movable oil retainer (1), an oil return spiral line (8) and the oil return hole (7) are formed in the inner wall of a static oil retainer (2), an oil control ring (12) is arranged at the inner side end of the outer wall of the static oil retainer (2), the inner side end of the static oil retainer (2) extends into the ring sleeve section (6) of the movable oil retainer (1), a sealing bell jar (3) is sleeved outside the movable oil retainer (1) and the static oil retainer (2) and fixedly connected with the static oil retainer (2) and a sealing end cover (4), and the eave of the oil retainer (9) of. The problem of high oil level, high oil pressure operation oil leak in the commentaries on classics quick-witted axle bush is solved. The oil-free working under the high-temperature and high-dust environment is oil-free.
Description
Technical Field
The utility model relates to a mechanical seal device, concretely relates to open type inside and outside formula spiral mechanical seal device.
Background
The seal between the relatively moving parts in the machine (or equipment) is a dynamic seal. The dynamic seal is divided into a reciprocating dynamic seal and a rotary dynamic seal. For rotary dynamic seals, there are contact dynamic seals where the moving and stationary parts are in direct contact; the two are not directly contacted with each other; the sealed semi-fluid dynamic seal is achieved by the special properties of the fluid added in the seal gap. At present, in the actual use process, because the used mechanical equipment has various complex operating conditions and different use environments, the existing sealing structure still has the problem of poor sealing. For example, when the sealing portion has a high oil level and a high oil pressure, the sealing portion may still leak.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: provides a split type internal and external spiral mechanical sealing device with good sealing effect.
The technical solution of the utility model is that: the split type internal and external spiral mechanical sealing device comprises a movable oil slinger, a static oil slinger, a sealing bell jar and a sealing end cover, the inner wall of the movable oil slinger is provided with a rotating shaft connecting section and a ring sleeve section, the caliber of the ring sleeve section is larger than that of the rotating shaft connecting section, the ring sleeve section is provided with an oil return hole penetrating through the inner wall and the outer wall of the ring sleeve, the outer wall of the movable oil slinger is provided with an oil return spiral line, the outer edge of the inner side end of the movable oil slinger is provided with an outward extending oil slinger, the movable oil slinger is fixedly connected with the rotating shaft, the inner wall of the static oil slinger is provided with the oil return spiral line and an oil return hole penetrating through the inner wall and the outer wall of the static oil slinger, the inner side end of, the inner side end of the movable oil slinger extends into the ring sleeve section of the movable oil slinger, the sealing bell cover is sleeved outside the movable oil slinger and the static oil slinger and is fixedly connected with the static oil slinger and the sealing end cover, and the oil slinging cornice of the movable oil slinger is blocked at the inner side end opening of the sealing bell cover.
The technical effects of the utility model are that: the sealing device solves the problem of oil leakage in the operation of high oil level and high oil pressure in the bearing bush of the rotary machine due to the fact that the outer circle of the movable oil slinger is designed with a spiral line. The sealing device is suitable for working in high-temperature and high-dust environment with the rotating speed of not more than 60000r/min and no oil leakage. Because gaps are reserved among all parts of the whole sealing device, and the friction phenomenon does not occur among all parts, spare parts do not exist in the improved sealing device. The whole sealing device is designed in a split mode, so that the existing running rotary machine equipment is convenient to reform. The sealing device has the design service life of 100 years and the service life of 50 years, and the transformed sealing device is free of maintenance and has no spare parts.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
fig. 2 is a schematic structural view of the movable oil slinger semi-ring of the present invention;
fig. 3 is a schematic structural diagram of the stationary oil slinger semi-ring of the present invention.
Detailed Description
As shown in fig. 1 to 3, the split internal and external screw mechanical sealing device includes a movable oil slinger 1, a static oil slinger 2, a sealing bell 3 and a sealing end cap 4, wherein the inner wall of the movable oil slinger 1 is provided with a rotating shaft connecting section 5 and a ring sleeve section 6, the diameter of the ring sleeve section 6 is larger than that of the rotating shaft connecting section 5, the ring sleeve section 6 is provided with an oil return hole 7 penetrating through the inner wall and the outer wall of the ring sleeve, the outer wall of the movable oil slinger 1 is provided with an oil return helix 8, the outer edge of the inner side end of the movable oil slinger 1 is provided with an extended oil slinger 9, the movable oil slinger 1 is fixedly connected with the rotating shaft 10, the inner wall of the static oil slinger 2 is provided with the oil return helix 8 and provided with the oil return hole 7 penetrating through the inner wall of the static oil slinger 2, the inner side end of the static oil slinger 2 is provided with an oil slinger 12, the outer side end is provided with a connecting part connected with the sealing bell 3, the static oil slinger 2 is sleeved on the rotating And an oil baffle cornice 9 of the movable oil baffle ring 1 is blocked at the inner side port of the sealing bell jar 3.
The oil return spiral line 8 on the outer wall of the movable oil slinger 1 and the oil return spiral line 8 on the inner wall of the static oil slinger 2 incline inwards, and the oil slinger 12 on the outer wall of the static oil slinger 2 inclines outwards.
An isolation ring groove 13 is arranged between the sealing bell 3 and the sealing end cover 4 at the inner side end.
The movable oil slinger 1 is fixedly connected with the rotating shaft through a jackscrew.
The movable oil slinger 1, the static oil slinger 2, the sealing bell 3 and the sealing end cover 4 are all annular bodies formed by connecting two semi-annular bodies. The two half ring bodies are connected in a positioning mode through parts such as positioning pins, positioning key grooves and the like so as to improve the connection precision, and the two half ring bodies are fastened through bolts. The connecting pieces can be sealed by sealant to prevent leakage. The movable oil slinger can be fixedly connected with the rotating shaft through a jackscrew.
All parts of the whole sealing device are in a split mode, are buckled on the rotating shaft and are screwed and fixed by lug plate screws on the sealing end covers, so that the sealing devices of the two half parts form a complete set of sealing device. When the rotating machine rotates, lubricating oil can overflow to the outer side of the end cover along the axial direction, and after the lubricating oil meets the rotating movable oil slinger, the lubricating oil is forcibly pumped back to an oil pool in the bearing bush under the action of the spiral line on the outer circle of the movable oil slinger and the inner circle of the sealing bell jar. If part of lubricating oil is not pumped back to an oil pool in the bearing bush and enters through the axial clearance between the movable oil slinger and the static oil slinger and falls onto the surface of the static oil slinger, the lubricating oil flows to the root of the bell mouth from the high position of the bell mouth-shaped oil slinger of the static oil slinger by the self weight of the lubricating oil and then flows to the inner cavity wall of the movable oil slinger from the root of the bell mouth. Because the movable oil slinger is provided with N oil return holes on the wall of the inner circular cavity of the movable oil slinger, lubricating oil flowing to the wall of the inner circular cavity of the movable oil slinger is thrown to the inner circle of the sealing bell jar through the N oil return holes under the action of high-speed rotation of the movable oil slinger, and the lubricating oil is forcibly thrown back to an oil pool in the bearing bush under the action of the spiral line on the outer circle of the movable oil slinger and the inner circle of the sealing bell jar. If a small part of lubricating oil is not pumped back to an oil pool in the bearing bush, the lubricating oil enters through an axial gap between the movable oil slinger and the static oil slinger and falls onto a rotating shaft, and under the action between a spiral line on the inner circle of the static oil slinger and the rotating shaft, the lubricating oil flows back to the wall of the inner circle cavity of the movable oil slinger through an axial gap between the movable oil slinger and the static oil slinger and through an oil return hole on the lower half part of the static oil slinger respectively, and flows back to the lubricating oil on the wall of the inner circle cavity of the movable oil slinger, and is pumped back to the oil pool in the bearing bush forcibly under the action of the spiral line on the inner circle of the movable oil.
Claims (5)
1. The split type internal and external spiral mechanical sealing device comprises a movable oil retainer (1), a static oil retainer (2), a sealing bell jar (3) and a sealing end cover (4), and is characterized in that a rotating shaft connecting section (5) and a ring sleeve section (6) are arranged on the inner wall of the movable oil retainer (1), the caliber of the ring sleeve section (6) is larger than that of the rotating shaft connecting section (5), an oil return hole (7) penetrating through the inner wall and the outer wall of the ring sleeve section (6) is arranged on the ring sleeve section (6), an oil return spiral line (8) is arranged on the outer wall of the movable oil retainer (1), an outward-extending oil-retaining eave (9) is arranged on the outer edge of the inner side end of the movable oil retainer (1), the movable oil retainer (1) is fixedly connected with the rotating shaft (10), an oil return spiral line (8) is arranged on the inner wall of the static oil retainer (2) and an oil return hole (7) penetrating through the inner wall and the outer wall of the movable oil retainer, the static oil slinger (2) is sleeved on the rotating shaft (10), the inner side end of the static oil slinger extends into the ring sleeve section (6) of the movable oil slinger (1), the sealing bell jar (3) is sleeved outside the movable oil slinger (1) and the static oil slinger (2) and fixedly connected with the static oil slinger (2) and the sealing end cover (4), and an oil slinger cornice (9) of the movable oil slinger (1) is blocked at the inner side port of the sealing bell jar (3).
2. The split type internal and external screw mechanical sealing device according to claim 1, wherein the oil return helix (8) of the outer wall of the movable oil slinger (1) and the oil return helix (8) of the inner wall of the static oil slinger (2) are inclined inwards, and the oil slinger (12) of the outer wall of the static oil slinger (2) is inclined outwards.
3. The split inner and outer spiral mechanical seal as claimed in claim 1, wherein a separation ring groove (13) is provided between the seal bell (3) and the end cap (4) at the inner end.
4. The split inner and outer screw mechanical seal device according to claim 1, wherein the movable slinger (1) is fixedly connected with the rotating shaft by a jackscrew.
5. The split inner and outer spiral mechanical seal device according to claim 1, 2, 3 or 4, wherein the dynamic slinger (1), the static slinger (2), the seal bell (3) and the seal end cover (4) are all annular bodies formed by connecting two half ring bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342442.9U CN210423711U (en) | 2019-08-19 | 2019-08-19 | Split type internal and external spiral mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921342442.9U CN210423711U (en) | 2019-08-19 | 2019-08-19 | Split type internal and external spiral mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423711U true CN210423711U (en) | 2020-04-28 |
Family
ID=70363030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921342442.9U Active CN210423711U (en) | 2019-08-19 | 2019-08-19 | Split type internal and external spiral mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423711U (en) |
-
2019
- 2019-08-19 CN CN201921342442.9U patent/CN210423711U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211230 Address after: 157000 No. 12-000107, Wuzhou International Trade Expo City, Xi'an District, Mudanjiang City, Heilongjiang Province Patentee after: Mudanjiang Hongliang sealing device Co.,Ltd. Address before: Room 910, Lanshan international, Xinglong Village, Dong'an District, Mudanjiang City, Heilongjiang Province Patentee before: Dai Hongliang |