CN114060522A - Independent floating type static ring with compact structure and mechanical seal comprising same - Google Patents
Independent floating type static ring with compact structure and mechanical seal comprising same Download PDFInfo
- Publication number
- CN114060522A CN114060522A CN202111326420.5A CN202111326420A CN114060522A CN 114060522 A CN114060522 A CN 114060522A CN 202111326420 A CN202111326420 A CN 202111326420A CN 114060522 A CN114060522 A CN 114060522A
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- supporting seat
- face
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 120
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000012856 packing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
- F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
- F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
Abstract
Independent floating static ring and contain its mechanical seal compact structure, including rotating ring, static ring subassembly, transmission shaft and casing. The transmission shaft penetrates through the movable ring and the static ring. The stationary ring comprises a front end cover, and a supporting seat and a sealing ring which can slide independently are arranged in the front end cover. The supporting seat is provided with a supporting seat sealing end face, and the sealing ring is provided with a sealing ring sealing end face. Two sealing belts formed between the movable ring assembly and the static ring assembly can form dynamic pressure oil film sealing and cool and lubricate the sealing surfaces, and high reliability and excellent sealing performance of the sealing assembly are guaranteed. The two reliable seals can independently slide in the axial direction, and the two sealing belts can be ensured not to lose effectiveness or weaken the sealing effect due to the abrasion action. The supporting seat and the sealing ring are of a 'return' structure on the interface, the diameter of the static ring is reduced, the weight of a product is reduced, and the structural stability of the static ring is improved.
Description
Technical Field
The invention relates to the field of mechanical seals, in particular to the field of mechanical seals for aerospace high-pressure fuel pumps.
Background
As is known well, the shaft tail end face seal of the fuel gear pump generally comprises a movable ring, a static ring, a transmission shaft, a loading device, an anti-rotation pin, an auxiliary sealing ring and the like. The quiet ring is generally installed on the end cover, and the rotating ring is generally installed in the rotating ring seat on the transmission shaft, so the axle tail sealing device axial length occupies a large amount of installation space of gear pump shell axle tail, leads to the casing weight height, and has liquid to reveal. In addition, the traditional shaft tail sealing device is complex, complex to assemble and low in reliability. Therefore, the mechanical sealing structure of the traditional shaft tail end surface needs to be optimized, the axial installation space of the sealing device is reduced, the assembly difficulty of the shaft tail is reduced, and the sealing reliability is improved.
Disclosure of Invention
The invention mainly aims to provide a mechanical seal with two seals and a compact structure, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the independent floating type static ring with a compact structure comprises a front end cover, wherein a supporting seat is arranged in the front end cover, and a sealing ring is arranged in the supporting seat; one end of the support seat close to the bottom of the front end cover is provided with a support seat wave spring, and the other end of the support seat is provided with a support seat sealing end face; a gasket and a sealing ring wave spring are arranged at one end of the sealing ring close to the bottom of the front end cover, a sealing ring sealing end face is arranged at the other end of the sealing ring, and a sealing ring convex ring is arranged on the outer side of the sealing ring; the supporting seat and the sealing ring can independently slide in the axial direction.
Preferably, the inner side of the supporting seat is provided with a supporting seat inner convex ring which is contacted with the outer side of the sealing ring; and a sealing ring convex ring is arranged on the inner side of the sealing ring, which is in contact with the front end cover.
Preferably, the support seat inner collar is located at one end of the support seat sealing end face, and a part of the support seat inner collar forms the support seat sealing end face.
Preferably, a plurality of cooling and lubricating grooves are formed in the sealing end face of the supporting seat.
Preferably, the surface of the seal end face of the moving ring or the seal end face of the support seat or the seal end face of the seal ring is partially or completely coated with wear-resistant materials.
The invention also provides a mechanical seal which comprises the independent floating type static ring with compact structure.
Preferably, the mechanical seal comprises a movable ring, a stationary ring, a transmission shaft and a housing; the transmission shaft penetrates through the movable ring and the static ring; the rotating ring is provided with a rotating ring sealing end face.
Preferably, the sealing end face of the supporting seat and the sealing end face of the sealing ring can be simultaneously contacted with the sealing end face of the movable ring; when the movable ring rotates relative to the static ring, a layer of dynamic pressure oil film can be formed between the sealing end surface of the movable ring and the sealing end surfaces of the supporting seat and the sealing ring.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the traditional mechanical seal of the shaft tail end surface, the invention forms two reliable seals between the movable ring and the static ring, can form dynamic pressure oil mold seal and cool and lubricate the sealing surface, and ensures high reliability and excellent sealing performance of the seal.
2. The two reliable seals can independently slide in the axial direction, and the two sealing belts can be ensured not to lose effectiveness or weaken the sealing effect due to the abrasion action.
3. Compared with a traditional shaft tail end surface mechanical seal static ring, the newly-added support seat and the seal ring interface are of a 'return' structure, the diameter of the static ring is reduced, the weight of a product is reduced, and the structural stability of the static ring is improved.
Drawings
FIG. 1 is a cross-sectional view of a stationary ring structure of the present invention;
FIG. 2 is a cross-sectional view of the mechanical seal of the present invention;
FIG. 3 is a perspective view of a stationary ring of the present invention;
FIG. 4 is a perspective view of the rotating ring of the present invention;
FIG. 5 is a schematic view of the labyrinth structure of the present invention;
in the figure: 1. the independent floating static ring with a compact structure and the mechanical seal comprising the independent floating static ring are provided; 2. a moving ring; 21. sealing the end face by a movable ring; 3. a stationary ring; 31. a front end cover; 32. a supporting seat; 321. sealing the end face of the supporting seat; 322. cooling the lubricating groove; 323. an inner convex ring of the supporting seat; 324. a maze; 33. a seal ring; 331. sealing the end face by a sealing ring; 332. a sealing ring is provided with an outer convex ring; 34. a stationary ring seal ring; 35. a gasket; 36. a seal ring wave spring; 37. an anti-rotation pin of a supporting seat; 38. an anti-rotation pin of the sealing ring; 39. a wave spring of a supporting seat; 4. a drive shaft; 5. a housing; 6. a circlip; 7. a housing seal ring; 8. and (4) mechanically sealing.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, the present invention is a cross-sectional view of a compact independent floating stationary ring, which includes a front cover 31. The front end cap 31 is a hollow circular ring and has an opening at one side for mounting a support seat 32 and a sealing ring 33 provided therein. The supporting seat 32 is a round tube with a certain thickness, and the cross section of the end contacting the movable ring 2 is a supporting seat sealing end face 321, which is a first sealing band. The other end of the support seat 32, i.e. the end near the bottom of the front cover 31, is provided with a support seat wave spring 39. The wave spring 39 of the support seat can make the support seat 32 move close to the moving ring 2 in the axial direction, so that the sealing end face 321 of the support seat is attached to the moving ring 2. The sealing ring 33 is sleeved in the supporting seat 32. Similarly, the sealing ring 33 is provided with a gasket 35 and a sealing ring wave spring 36 at one end near the bottom of the front end cover 31, and a sealing ring sealing end surface 331 at the other end, which is a second sealing band. The packing wave spring 36 can move the packing 33 in the axial direction close to the rotating ring 2, and the packing seal end surface 331 is brought into contact with the rotating ring 2. And the sliding of the support seat 32 and the seal ring 33 in the axial direction is independent.
The inner side of the sealing ring 33 contacting with the front end cover 31 is provided with a static sealing ring 34, so that the liquid between the supporting seat 32 and the sealing ring 33 is prevented from leaking from the inner side of the sealing ring 33 and the front end cover 31.
In order to fix the supporting seat 32 and the sealing ring 33 relative to the front end cap 31, a plurality of supporting seat rotation-preventing pins 37 are disposed between the supporting seat 32 and the front end cap 31, and a plurality of sealing ring rotation-preventing pins 38 are disposed between the sealing ring 33 and the supporting seat 32.
The supporting seat sealing end face 321 can be provided with a plurality of cooling and lubricating grooves 322, the cooling and lubricating grooves 322 generally penetrate through the supporting seat sealing end face 321 in the radial direction, the liquid infiltration amount is increased, and the lubricating and cooling effects are achieved.
Preferably, the support seat inner flange 323 is provided inside the support seat 32 and contacts the outside of the seal ring 33. The inner side of the sealing ring 33 contacting with the front end cover 31 is provided with a sealing ring convex ring 332. However, the support seat inner convex ring 323 and the seal ring outer convex ring 332 cannot interfere with each other in the axial direction, and a certain distance is provided between the support seat inner convex ring 323 and the seal ring outer convex ring 332, so that interference between the support seat 32 and the seal ring 33 during sliding is avoided. For example, if the seat inner collar 323 is located near the end of the seat sealing end 321, the seal ring outer collar 332 should be located near the bottom of the front cover 31. And a certain distance is set between the two to ensure that the sealing ring 33 and the front end cover 31 can slide independently.
More preferably, the inner support seat flange 323 is located at one end of the support seat sealing end face 321, and a part of the inner support seat flange constitutes the support seat sealing end face 321, and the outer seal ring flange 332 is located at one end close to the bottom of the front end cover 31. Namely, on the cross section, the two are L-shaped, and mutually form a 'return' substructure, so that the diameter of the static ring 3 can be greatly reduced, and the weight of the product is reduced.
On the basis of the above embodiment, the surface of the seal end face 21 of the moving ring, the seal end face 321 of the support seat or the seal end face 331 of the seal ring is partially or completely coated with wear-resistant material to reduce the wear of the friction face and prolong the service life of the stationary ring 3 and the moving ring 2.
As shown in fig. 2, the mechanical seal 8 according to the present invention comprises the above-mentioned independent floating static ring with compact structure, further comprising the dynamic ring 2, the transmission shaft 4 and the housing 5, according to any of the above-mentioned embodiments. The transmission shaft 4 passes through the dynamic ring 2 and the static ring 3.
A shell sealing ring 7 and an elastic retainer ring 6 are arranged between the front end cover 31 and the shell 5. The housing seal 7 prevents liquid from leaking out of the gap between the front end cap 31 and the housing 5. The circlip 6 is used to fix the stationary ring 3.
The rotating ring 2 is provided with a rotating ring sealing end face 21, and the rotating ring sealing end face 21 is tightly attached to the supporting seat sealing end face 321 and the sealing ring sealing end face 331. When the transmission shaft 4 rotates, the movable ring 2 rotates along with the transmission shaft 4, and the fixed ring 3 is static relative to the shell 5. High-pressure liquid in the shell 5 firstly enters the first sealing band, the pressure of the liquid is reduced, and a dynamic pressure oil film is formed between the sealing end face 321 of the supporting seat and the sealing end face 21 of the moving ring, so that the abrasion is greatly reduced. Due to the depressurization of the first sealing strip, liquid cannot penetrate the second sealing strip. The two sealing strips ensure high reliability and superior sealing performance of the mechanical seal 8. Meanwhile, the supporting seat 32 and the sealing ring 33 which can slide independently can ensure that the two sealing belts cannot lose effectiveness or the sealing effect is weakened due to the abrasion action.
Meanwhile, in order to enhance the pressure reduction effect of the first sealing tape, temporarily store part of the liquid and enhance the lubrication effect, a labyrinth 324 may be disposed on the sealing end face 321 of the supporting seat. The labyrinth 324 is of various forms and may be composed of several grooves shaped as concentric circles, as shown in fig. 5. The labyrinth 324 may also be formed of a plurality of grooves or other shapes that are semi-circular in shape.
The foregoing has described the principles of use, features and advantages of the invention. The above embodiments and the description of the invention are provided to illustrate the basic principles and features of the invention and, within the scope of the invention concept, to be understood by those skilled in the art from the foregoing description, various modifications may be made to the invention and these modifications are within the scope of the invention as claimed.
Claims (9)
1. The independent floating type static ring with a compact structure is characterized by comprising a front end cover (31), wherein a supporting seat (32) is arranged in the front end cover (31), and a sealing ring (33) is arranged in the supporting seat (32); one end of the support seat (32) close to the bottom of the front end cover (31) is provided with a support seat wave spring (39), and the other end is provided with a support seat sealing end face (321); a gasket (35) and a sealing ring wave spring (36) are arranged at one end of the sealing ring (33) close to the bottom of the front end cover (31), a sealing ring sealing end surface (331) is arranged at the other end of the sealing ring (33), and a sealing ring convex ring (332) is arranged on the outer side of the sealing ring; the supporting seat (32) and the sealing ring (33) can independently slide in the axial direction.
2. The compact self-contained floating stationary ring of claim 1 wherein: a supporting seat inner convex ring (323) is arranged on the inner side of the supporting seat (32) and is in contact with the outer side of the sealing ring (33); and a sealing ring convex ring (332) is arranged on the inner side of the sealing ring (33) contacted with the front end cover (31).
3. The compact self-contained floating stationary ring of claim 2 wherein: the supporting seat inner convex ring (323) is positioned at one end of the supporting seat sealing end face (321), and a part of the supporting seat inner convex ring forms the supporting seat sealing end face (321).
4. The compact self-contained floating stationary ring according to any one of claims 1 to 3, characterized by: and a plurality of cooling and lubricating grooves (322) are arranged on the sealing end surface (321) of the supporting seat.
5. The compact self-contained floating stationary ring of claim 4 wherein: the surface of the seal end face (21) of the moving ring or the seal end face (321) of the support seat or the seal end face (331) of the seal ring is partially or completely coated with wear-resistant materials.
6. A mechanical seal, characterized in that said mechanical seal (8) comprises a compact self-contained floating static ring according to any of claims 1-3.
7. The mechanical seal of claim 6, wherein: the mechanical seal (8) comprises a movable ring (2), a stationary ring (3), a transmission shaft (4) and a shell (5); the transmission shaft (4) penetrates through the movable ring (2) and the fixed ring (3); the movable ring (2) is provided with a movable ring sealing end face (21).
8. The mechanical seal of claim 7, wherein: when the movable ring (2) rotates relative to the static ring (3), a dynamic pressure oil film can be formed between the movable ring sealing end surface (21) and the supporting seat sealing end surface (321) and between the movable ring sealing end surface and the sealing ring sealing end surface (331).
9. The mechanical seal of claim 8, wherein: and a labyrinth (324) is arranged on the sealing end surface (321) of the supporting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326420.5A CN114060522A (en) | 2021-11-10 | 2021-11-10 | Independent floating type static ring with compact structure and mechanical seal comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111326420.5A CN114060522A (en) | 2021-11-10 | 2021-11-10 | Independent floating type static ring with compact structure and mechanical seal comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114060522A true CN114060522A (en) | 2022-02-18 |
Family
ID=80274584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111326420.5A Pending CN114060522A (en) | 2021-11-10 | 2021-11-10 | Independent floating type static ring with compact structure and mechanical seal comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060522A (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090189355A1 (en) * | 2004-07-02 | 2009-07-30 | Nippon Pillar Packing Co., Ltd. | Mechanical seal |
| CN102829183A (en) * | 2012-08-13 | 2012-12-19 | 陕西长岭电子科技有限责任公司 | Large-diameter high-pressure mechanical sealing device |
| CN102927286A (en) * | 2012-11-01 | 2013-02-13 | 安徽亚兰密封件有限公司 | Double-floating integrated mechanical seal with large shaft diameter |
| CN202867852U (en) * | 2012-11-01 | 2013-04-10 | 安徽亚兰密封件有限公司 | Novel mechanical seal capable of reducing end face deformation |
| CN103883733A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Single mechanical seal with elastic sealing ring and double mechanical seal with elastic sealing ring |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN104696517A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Integrated double mechanical seal |
| CN104863890A (en) * | 2015-05-30 | 2015-08-26 | 山东钢铁股份有限公司 | Mechanical seal device for high-temperature and high-pressure forced hot water circulating pump |
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| CN110030383A (en) * | 2019-04-10 | 2019-07-19 | 艾志（南京）环保管接技术股份有限公司 | The interior liquid mechanical seal with axial floating pallet set |
| CN110864116A (en) * | 2019-12-07 | 2020-03-06 | 丹东锦达密封有限公司 | Floating integrated mechanical sealing device for high-pressure ash water pump |
| CN110906007A (en) * | 2019-12-08 | 2020-03-24 | 陕西航空电气有限责任公司 | Mechanical seal structure for aviation oil-cooled generator |
| CN112128097A (en) * | 2020-09-08 | 2020-12-25 | 洛普兰机械设备(宁波)有限公司 | Integrated mechanical seal for industrial cam rotor pump |
| WO2021004376A1 (en) * | 2019-07-07 | 2021-01-14 | 南京林业大学 | Combined non-contact double-end surface seal for main nuclear pump of molten salt reactor |
| CN112780414A (en) * | 2020-12-31 | 2021-05-11 | 浙江环誉泵业科技有限公司 | Low-pressure pulsation multi-connection lubricating oil pump set easy to maintain |
-
2021
- 2021-11-10 CN CN202111326420.5A patent/CN114060522A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090189355A1 (en) * | 2004-07-02 | 2009-07-30 | Nippon Pillar Packing Co., Ltd. | Mechanical seal |
| CN102829183A (en) * | 2012-08-13 | 2012-12-19 | 陕西长岭电子科技有限责任公司 | Large-diameter high-pressure mechanical sealing device |
| CN102927286A (en) * | 2012-11-01 | 2013-02-13 | 安徽亚兰密封件有限公司 | Double-floating integrated mechanical seal with large shaft diameter |
| CN202867852U (en) * | 2012-11-01 | 2013-04-10 | 安徽亚兰密封件有限公司 | Novel mechanical seal capable of reducing end face deformation |
| CN104696517A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Integrated double mechanical seal |
| CN103883733A (en) * | 2014-03-03 | 2014-06-25 | 浙江长城减速机有限公司 | Single mechanical seal with elastic sealing ring and double mechanical seal with elastic sealing ring |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN104863890A (en) * | 2015-05-30 | 2015-08-26 | 山东钢铁股份有限公司 | Mechanical seal device for high-temperature and high-pressure forced hot water circulating pump |
| CN106481818A (en) * | 2016-11-01 | 2017-03-08 | 天津市合润科技有限责任公司 | A kind of external stationary ring nose balance mechanism on mechanically-sealing apparatus |
| CN106523707A (en) * | 2016-11-01 | 2017-03-22 | 天津市合润科技有限责任公司 | Mechanical sealing device |
| CN207145618U (en) * | 2017-08-29 | 2018-03-27 | 西安普力流体科技有限公司 | A kind of mechanically-sealing apparatus for the granule medium containing hard grind |
| CN108413041A (en) * | 2018-05-16 | 2018-08-17 | 苏州科耐迈克低温装备科技有限公司 | Floating ring mechanical sealing member |
| CN208221603U (en) * | 2018-05-19 | 2018-12-11 | 奉化市飞固凯恒密封工程有限公司 | A kind of mechanical sealing member |
| CN110030383A (en) * | 2019-04-10 | 2019-07-19 | 艾志（南京）环保管接技术股份有限公司 | The interior liquid mechanical seal with axial floating pallet set |
| WO2021004376A1 (en) * | 2019-07-07 | 2021-01-14 | 南京林业大学 | Combined non-contact double-end surface seal for main nuclear pump of molten salt reactor |
| CN110864116A (en) * | 2019-12-07 | 2020-03-06 | 丹东锦达密封有限公司 | Floating integrated mechanical sealing device for high-pressure ash water pump |
| CN110906007A (en) * | 2019-12-08 | 2020-03-24 | 陕西航空电气有限责任公司 | Mechanical seal structure for aviation oil-cooled generator |
| CN112128097A (en) * | 2020-09-08 | 2020-12-25 | 洛普兰机械设备(宁波)有限公司 | Integrated mechanical seal for industrial cam rotor pump |
| CN112780414A (en) * | 2020-12-31 | 2021-05-11 | 浙江环誉泵业科技有限公司 | Low-pressure pulsation multi-connection lubricating oil pump set easy to maintain |
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Application publication date: 20220218 |