CN102606736A - Sealing device for reaction kettles - Google Patents
Sealing device for reaction kettles Download PDFInfo
- Publication number
- CN102606736A CN102606736A CN2011100245611A CN201110024561A CN102606736A CN 102606736 A CN102606736 A CN 102606736A CN 2011100245611 A CN2011100245611 A CN 2011100245611A CN 201110024561 A CN201110024561 A CN 201110024561A CN 102606736 A CN102606736 A CN 102606736A
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- seal
- flange
- stirring shaft
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a sealing device for reaction kettles, comprising a first flange, a second sealing barrel, a first sealing barrel and a second flange which are sequentially, hermetically and fixedly connected from top to bottom and sleeved outside a stirring shaft, wherein first, second and third static rings are respectively, hermetically and fixedly arranged at the lower end of the first flange, the upper end of the second flange and the lower end of the second sealing barrel; first, second and third moving rings are respectively, hermetically and fixedly sleeved outside the stirring shaft and respectively in sealing contact with the third, the second and the first static rings; a first sealing cavity is formed among the first and the second sealing barrels, the second flange, the stirring shaft, the first and the second moving rings, the second and the third static rings; a second sealing cavity is formed among the first flange, the second sealing barrel, the first static ring, the first and the third moving rings and the third static ring; and the pressure in the second sealing cavity is less than that in the first sealing cavity. The device disclosed by the invention has the advantages that the pressure difference of the connection end face of the first sealing cavity is effectively reduced; the situations that the first sealing cavity leaks and bursts are effectively prevented from happening; and the use safety of the reaction kettles is guaranteed.
Description
Technical field
The present invention relates to a kind of seal arrangement, particularly a kind of reaction kettle of high-voltage high-speed is used seal arrangement.
Background technique
At present, the reaction kettle of high-voltage high-speed all is a Seal cage with seal arrangement, during reaction kettle work; Owing to producing high pressure in the Seal cage, form high-intensity pressure difference for the connection end face of Seal cage, make Seal cage have the potential risk of leakage even explosion; And all be toxic substance in the general reaction kettle; In case Seal cage is revealed, will cause serious pollution to the external world, seriously jeopardize the extraneous environment and staff's the person.
Summary of the invention
In order to remedy above deficiency, the invention provides a kind of reaction kettle and use seal arrangement, this reaction kettle can effectively reduce the pressure difference that the connection end face of seal chamber bears with seal arrangement, guarantees the sealing and the Security of seal chamber.
The present invention for the technological scheme that solves its technical problem and adopt is: a kind of reaction kettle is used seal arrangement; Comprise stirring shaft, first and second flange, first sealed cylinder, first and second stationary ring and first and second rotating ring, be benchmark to use direction, first flange, first sealed cylinder and second flange are sheathed on the stirring shaft outside from top to bottom successively; The first sealed cylinder lower end and the sealing of second flange upper end are connected; First and second stationary ring seals respectively that to be fixedly arranged on the first flange lower end inboard inboard with second flange upper end, be positioned at first and second inboard rotating ring of first sealed cylinder respectively sealing and fixing be sheathed on the stirring shaft outside, the second rotating ring lower end seals with the second stationary ring upper-end surface and contacts; Also be provided with second sealed cylinder, the 3rd rotating ring and the 3rd stationary ring; Second sealed cylinder is sheathed on the stirring shaft outside, and second sealed cylinder and is connected with first sealed cylinder and first flange seal respectively between first sealed cylinder and first flange; It is inboard that the sealing of the 3rd stationary ring is fixedly arranged on the second sealed cylinder lower end; The 3rd rotating ring sealing and fixing that is positioned at second sealed cylinder is sheathed on the stirring shaft outside, and first rotating ring upper end contacts with the sealing of the 3rd stationary ring lower end, and the 3rd rotating ring upper end contacts with the sealing of the first stationary ring lower end; Form one first Seal cage between first and second sealed cylinder, second flange, stirring shaft, first and second rotating ring and second and third stationary ring; Form one second Seal cage between first flange, second sealed cylinder, first stationary ring, first and third rotating ring and the 3rd stationary ring, the said second Seal cage internal pressure is less than the first Seal cage internal pressure, during actual the use; The first Seal cage internal pressure forms the pressure towards the second Seal cage direction for the connection end face of first and second sealed cylinder; The second Seal cage internal pressure forms the pressure towards the first Seal cage direction for the connection end face of first and second sealed cylinder, cancels out each other after two bursts of pressure reversal effects, and the pressure that the connection end face of first and second sealed cylinder is born effectively reduces; Prevent that effectively first Seal cage from bearing the excessive explosion of pressure because of end face; Effectively prevent simultaneously first Seal cage from leaking and cause to external world pollution (even first Seal cage leaks, material will be discharged in second Seal cage in first Seal cage, can directly not be discharged to the external world; Also just prevented pollution to external world), make the reaction kettle work safety further be protected like this.
As further improvement of the present invention, the second Seal cage internal pressure is the half the of the first Seal cage internal pressure, can the pressure difference between the connection end face of first and second sealed cylinder be reduced to minimum like this, fully guarantees the sealing and the Security of first Seal cage.
As further improvement of the present invention; Said first and second rotating ring sealing and fixing respectively is sheathed on the structure that the stirring shaft outside and the 3rd rotating ring sealing and fixing be sheathed on the stirring shaft outside and is: form a loop gap between first, second and third rotating ring and the stirring shaft respectively; Be respectively equipped with a seal ring in the said annular gap; The inboard elasticity of seal ring presses closer stirring shaft, and outside elasticity respectively presses closer first, second and third rotating ring, also is respectively equipped with a ring-type back-up ring between said first, second and third rotating ring and the seal ring axial clearance; In use; The stirring shaft high speed rotating, owing to have high pressure in first and second Seal cage, seal ring can produce the trend (promptly axially jumping) of depths, gap motion towards between first, second and third rotating ring and stirring shaft; The ring-type back-up ring plays backstop action to seal ring; Prevent that seal ring from getting between first, second and third rotating ring and stirring shaft the depths, gap and resiliently deformable takes place, and just prevents that also seal ring from because of the situation that resiliently deformable lost efficacy takes place, fully having guaranteed the sealing of first and second Seal cage.
As further improvement of the present invention, said ring-type back-up ring is an inner concave arc surface towards seal ring one side, and proper and this inner concave arc surface applying of seal ring prevents that further it from axially jumping.
As further improvement of the present invention; First and second rotating ring neutral position that stirring shaft is positioned at first Seal cage also detachably is arranged with a bearing; Bearing on this bearing and first flange forms two fulcrums and plays a supporting role, and stirring shaft can produce axial runout in the high-speed rotation process, in the middle of first and second rotating ring of first Seal cage, establishes bearing; The axial-shift that makes first and second rotating ring take place like this is minimum; Guarantee that the parallelism between itself and the 3rd, two stationary rings is high, promptly its surface of contact sealing is high, good stability.
As further improvement of the present invention, being full of respectively in said first and second Seal cage has sealing fluid, also is provided with booster jar, recycle pump and pumping plant; The outlet of first Seal cage is communicated with the import of booster jar, and the outlet of booster jar is communicated with inlet of circulating pump, and outlet of circulating pump is communicated with the import of first Seal cage; The outlet of second Seal cage is communicated with the pumping plant import; The pumping plant outlet is communicated with the import of second Seal cage, and the sealing fluid in first Seal cage is got back to first Seal cage again through booster jar and recycle pump, and the sealing fluid of second Seal cage is got back to second Seal cage again through behind the pumping plant; Resource is saved in the sealing fluid recycle.
As further improvement of the present invention; Also be provided with pressure-detecting device and pressure control device; Pressure-detecting device can detect the first Seal cage internal pressure, and pressure-detecting device is messaging in pressure control device, and pressure control device can be controlled the sealed fluid pressure of pumping plant output; Because the first Seal cage internal pressure is a unsteady pressure, can guarantee that so no matter how the first Seal cage pressure changes the second Seal cage internal pressure is the half the of the first Seal cage pressure all the time.
The invention has the beneficial effects as follows: the present invention is through increasing by second Seal cage of a low pressure in first Seal cage outside; Effectively reduce the pressure difference that first Seal cage connects end face; Prevent that effectively first Seal cage from taking place to reveal and the situation of explosion takes place, guaranteed the safety in utilization of reaction kettle.
Description of drawings
Fig. 1 is a structural principle schematic representation of the present invention;
Fig. 2 is first, second and third rotating ring sealing configuration principle schematic.
Embodiment
Embodiment: a kind of reaction kettle is used seal arrangement; Comprise stirring shaft 10, first and second flange 1,2, first sealed cylinder 3, first and second stationary ring 5,6 and first and second rotating ring 7,8; To use direction to be benchmark; First flange 1, first sealed cylinder 3 and second flange 2 are sheathed on stirring shaft 10 outsides from top to bottom successively, and first sealed cylinder, 3 lower ends and the sealing of second flange, 2 upper ends are connected, and first and second stationary ring 5,6 seal respectively and is fixedly arranged on inboard and inboard, second flange, 2 upper ends, first flange, 1 lower end; Be positioned at first and second inboard rotating ring 7,8 of first sealed cylinder 3 respectively sealing and fixing be sheathed on stirring shaft 10 outsides; The sealing of second rotating ring, 8 lower ends and second stationary ring, 6 upper-end surfaces contacts, and also is provided with second sealed cylinder 4, the 3rd rotating ring 9 and the 3rd stationary ring 11, the second sealed cylinders 4 and is sheathed on stirring shaft 10 outsides; Second sealed cylinder 4 is between first sealed cylinder 3 and first flange 1; And be connected with first sealed cylinder 3 and 1 sealing of first flange respectively, it is inboard that 11 sealings of the 3rd stationary ring are fixedly arranged on second sealed cylinder, 4 lower ends, and the 3rd rotating ring 9 sealing and fixing that are positioned at second sealed cylinder 4 are sheathed on stirring shaft 10 outsides; First rotating ring, 7 upper ends contact with the sealing of the 3rd stationary ring 11 lower ends; The sealing of the 3rd rotating ring 9 upper ends and first stationary ring, 5 lower ends contact, first and second sealed cylinder 3,4, second flange 2, stirring shaft 10, first and second rotating ring 7,8 and second and third stationary ring 6, forms one second Seal cage 13 of formation between one first Seal cage, 12, the first flanges 1, second sealed cylinder 4, first stationary ring 5, first and third rotating ring 7,9 and the 3rd stationary ring 11 between 11; Said second Seal cage, 13 internal pressures are less than first Seal cage, 12 internal pressures; During actual the use, first Seal cage, 12 internal pressures form the pressure towards second Seal cage, 13 directions for the connection end face of first and second sealed cylinder 3,4, and second Seal cage, 13 internal pressures form the pressure towards first Seal cage, 12 directions for the connection end face of first and second sealed cylinder 3,4; Cancel out each other after two bursts of pressure reversal effects; The pressure that the connection end face of first and second sealed cylinder 3,4 is born effectively reduces, and prevents that effectively first Seal cage 12 from bearing the excessive explosion of pressure because of end face, effectively prevents that first Seal cage 12 from leaking and cause to external world pollution (even first Seal cage 12 leaks simultaneously; Material will be discharged in second Seal cage 13 in first Seal cage 12; Can directly not be discharged to the external world, just prevent pollution to external world yet), make the reaction kettle work safety further be protected like this.
Said second Seal cage, 13 internal pressures are the half the of first Seal cage, 12 internal pressures, can the pressure difference between the connection end face of first and second sealed cylinder 3,4 be reduced to minimum like this, fully guarantee the sealing and the Security of first Seal cage 12.
Said first and second rotating ring 7,8 sealing and fixing respectively is sheathed on the structure that stirring shaft 10 outsides and the 3rd rotating ring 9 sealing and fixing are sheathed on stirring shaft 10 outsides and is: form a loop gap respectively between first, second and third rotating ring 7,8,9 and the stirring shaft 10; Be respectively equipped with a seal ring 14 in the said annular gap; Seal ring 14 inboard elasticity press closer stirring shaft 10; Outside elasticity respectively presses closer first, second and third rotating ring 7,8,9; Also be respectively equipped with a ring-type back-up ring 15 between said first, second and third rotating ring 7,8,9 and seal ring 14 axial clearances, in use, stirring shaft 10 high speed rotating; Owing to have high pressure in first and second Seal cage; Seal ring 14 can produce towards the trend (promptly axially jump) of first, second and third rotating ring 7,8,9 with the motion of depths, 10 gaps of stirring shaft, and 15 pairs of seal rings 14 of ring-type back-up ring play backstop action, prevents seal ring 14 first, second and third rotating rings 7,8,9 of entering and stirring shaft depths, 10 gaps and resiliently deformable takes place; Also just prevent that seal ring 14 from because of the situation that resiliently deformable lost efficacy takes place, fully having guaranteed the sealing of first and second Seal cage.
Said ring-type back-up ring 15 is an inner concave arc surface towards seal ring 14 1 sides, and seal ring 14 proper and these inner concave arc surface applyings prevent that further it from axially jumping.
First and second rotating ring 7,8 neutral position that said stirring shaft 10 is positioned at first Seal cage 12 also detachably are arranged with a bearing 16; Bearing on this bearing 16 and first flange 1 forms two fulcrums and plays a supporting role; Stirring shaft 10 can produce axial runout in the high-speed rotation process; In the middle of first and second rotating ring 7,8 of first Seal cage 12, establish bearing 16, the axial-shift that makes first and second rotating ring 7,8 take place like this is minimum, guarantee its with the 3rd, two stationary rings between the parallelism height; Be that its surface of contact sealing is high, good stability.
Being full of respectively in said first and second Seal cage 12,13 has sealing fluid, and the outlet that also is provided with booster jar 17, recycle pump 18 and pumping plant 19, the first Seal cages 12 is communicated with the import of booster jar 17; The outlet of booster jar 17 is communicated with the import of recycle pump 18; The outlet of recycle pump 18 is communicated with the import of first Seal cage 12, and the outlet of second Seal cage 13 is communicated with pumping plant 19 imports, and pumping plant 19 outlets are communicated with the import of second Seal cage 13; Sealing fluid in first Seal cage 12 is got back to first Seal cage 12 again through booster jar 17 and recycle pump 18; The sealing fluid of second Seal cage 13 is got back to second Seal cage 13 again through behind the pumping plant 19, and resource is saved in the sealing fluid recycle.
Also be provided with pressure-detecting device and pressure control device; Pressure-detecting device can detect first Seal cage, 12 internal pressures; Pressure-detecting device is messaging in pressure control device; Pressure control device can be controlled the sealed fluid pressure of pumping plant 19 outputs, because first Seal cage, 12 internal pressures are unsteady pressure, can guarantee that so no matter how first Seal cage, 12 pressure change second Seal cage, 13 internal pressures is the half the of first Seal cage, 12 pressure all the time.
Claims (7)
1. a reaction kettle is used seal arrangement; Comprise stirring shaft (10), first and second flange (1,2), first sealed cylinder (3), first and second stationary ring (5,6) and first and second rotating ring (7,8); To use direction to be benchmark; First flange (1), first sealed cylinder (3) and second flange (2) are sheathed on stirring shaft (10) outside from top to bottom successively; First sealed cylinder (3) lower end and the sealing of second flange (2) upper end are connected; First and second stationary ring (5,6) seals respectively and is fixedly arranged on inboard and inboard, second flange (2) upper end, first flange (1) lower end; Be positioned at inboard first and second rotating ring (7,8) of first sealed cylinder (3) respectively sealing and fixing be sheathed on stirring shaft (10) outside, second rotating ring (8) lower end seals with second stationary ring (6) upper-end surface and contacts, and it is characterized in that: also be provided with second sealed cylinder (4), the 3rd rotating ring (9) and the 3rd stationary ring (11); Second sealed cylinder (4) is sheathed on stirring shaft (10) outside; Second sealed cylinder (4) is positioned between first sealed cylinder (3) and first flange (1), and is connected with first sealed cylinder (3) and first flange (1) sealing respectively, and it is inboard that the 3rd stationary ring (11) sealing is fixedly arranged on second sealed cylinder (4) lower end; The 3rd rotating ring (9) sealing and fixing that is positioned at second sealed cylinder (4) is sheathed on stirring shaft (10) outside; First rotating ring (7) upper end contacts with the sealing of the 3rd stationary ring (11) lower end, and the 3rd rotating ring (9) upper end contacts with the sealing of first stationary ring (5) lower end, forms one first Seal cage (12) between first and second sealed cylinder (3,4), second flange (2), stirring shaft (10), first and second rotating ring (7,8) and second and third stationary ring (6,11); Form one second Seal cage (13) between first flange (1), second sealed cylinder (4), first stationary ring (5), first and third rotating ring (7,9) and the 3rd stationary ring (11), said second Seal cage (13) internal pressure is less than first Seal cage (12) internal pressure.
2. reaction kettle according to claim 1 is used seal arrangement, it is characterized in that: second Seal cage (13) internal pressure is the half the of first Seal cage (12) internal pressure.
3. reaction kettle according to claim 1 is used seal arrangement; It is characterized in that: said first and second rotating ring (7,8) sealing and fixing respectively is sheathed on the structure that stirring shaft (10) outside and the 3rd rotating ring (9) sealing and fixing be sheathed on stirring shaft (10) outside and is: form a loop gap respectively between first, second and third rotating ring (7,8,9) and the stirring shaft (10); Be respectively equipped with a seal ring (14) in the said annular gap; The inboard elasticity of seal ring (14) presses closer stirring shaft (10); Outside elasticity respectively presses closer first, second and third rotating ring (7,8,9), also is respectively equipped with a ring-type back-up ring (15) between said first, second and third rotating ring (7,8,9) and seal ring (14) axial clearance.
4. reaction kettle according to claim 3 is used seal arrangement, it is characterized in that: said ring-type back-up ring (15) is an inner concave arc surface towards seal ring (14) one sides.
5. reaction kettle according to claim 1 is used seal arrangement, it is characterized in that: first and second rotating ring (7,8) neutral position that stirring shaft (10) is positioned at first Seal cage (12) also detachably is arranged with a bearing (16).
6. reaction kettle according to claim 2 is used seal arrangement; It is characterized in that: being full of respectively in said first and second Seal cage (12,13) has sealing fluid; Also be provided with booster jar (17), recycle pump (18) and pumping plant (19); The outlet of first Seal cage (12) is communicated with the import of booster jar (17), and the outlet of booster jar (17) is communicated with the import of recycle pump (18), and the outlet of recycle pump (18) is communicated with the import of first Seal cage (12); The outlet of second Seal cage (13) is communicated with pumping plant (19) import, and pumping plant (19) outlet is communicated with the import of second Seal cage (13).
7. reaction kettle according to claim 6 is used seal arrangement; It is characterized in that: also be provided with pressure-detecting device and pressure control device; Pressure-detecting device can detect first Seal cage (12) internal pressure; Pressure-detecting device is messaging in pressure control device, and pressure control device can be controlled the sealed fluid pressure of pumping plant (19) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024561.1A CN102606736B (en) | 2011-01-21 | 2011-01-21 | Sealing device for reaction kettles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024561.1A CN102606736B (en) | 2011-01-21 | 2011-01-21 | Sealing device for reaction kettles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102606736A true CN102606736A (en) | 2012-07-25 |
| CN102606736B CN102606736B (en) | 2015-01-21 |
Family
ID=46524381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110024561.1A Active CN102606736B (en) | 2011-01-21 | 2011-01-21 | Sealing device for reaction kettles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606736B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483831A (en) * | 2015-12-04 | 2016-04-13 | 湖南红太阳光电科技有限公司 | Two-grade sealing apparatus used for reduced pressure diffusion systems |
| CN109630686A (en) * | 2018-12-21 | 2019-04-16 | 中化蓝天氟材料有限公司 | A kind of combination sealing system of reaction kettle agitating shaft and its application |
| CN110201616A (en) * | 2019-04-26 | 2019-09-06 | 威海汇鑫化工机械有限公司 | Magnetic drive reaction kettle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921962A (en) * | 1973-11-10 | 1975-11-25 | Elba Werk Maschinen Gmbh & Co | Shaft mounting for cement mixer or the like |
| CN2172376Y (en) * | 1993-04-29 | 1994-07-20 | 张秋翔 | Double axle sleeve mechanical sealing device |
| CN2186330Y (en) * | 1994-01-25 | 1994-12-28 | 朱金明 | Machinery sealing device for stillage |
| JPH08303607A (en) * | 1995-04-27 | 1996-11-22 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN101463903A (en) * | 2009-01-12 | 2009-06-24 | 浙江大学 | High-pressure controllable slide valve type mechanical combination sealing system |
| CN201420856Y (en) * | 2009-04-07 | 2010-03-10 | 汝南县东旭碳材塑料有限公司 | Sealing device for high-temperature and high-pressure resistant vessel |
| CN201944274U (en) * | 2011-01-21 | 2011-08-24 | 昆山密友机械密封有限公司 | Sealing device for agitated reactor |
-
2011
- 2011-01-21 CN CN201110024561.1A patent/CN102606736B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921962A (en) * | 1973-11-10 | 1975-11-25 | Elba Werk Maschinen Gmbh & Co | Shaft mounting for cement mixer or the like |
| CN2172376Y (en) * | 1993-04-29 | 1994-07-20 | 张秋翔 | Double axle sleeve mechanical sealing device |
| CN2186330Y (en) * | 1994-01-25 | 1994-12-28 | 朱金明 | Machinery sealing device for stillage |
| JPH08303607A (en) * | 1995-04-27 | 1996-11-22 | Nippon Pillar Packing Co Ltd | Mechanical seal |
| CN101463903A (en) * | 2009-01-12 | 2009-06-24 | 浙江大学 | High-pressure controllable slide valve type mechanical combination sealing system |
| CN201420856Y (en) * | 2009-04-07 | 2010-03-10 | 汝南县东旭碳材塑料有限公司 | Sealing device for high-temperature and high-pressure resistant vessel |
| CN201944274U (en) * | 2011-01-21 | 2011-08-24 | 昆山密友机械密封有限公司 | Sealing device for agitated reactor |
Non-Patent Citations (1)
| Title |
|---|
| 周延熙 等: "加压反应釜搅拌轴双端面密封液供应自动伺服技术", 《中国有色冶金》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483831A (en) * | 2015-12-04 | 2016-04-13 | 湖南红太阳光电科技有限公司 | Two-grade sealing apparatus used for reduced pressure diffusion systems |
| CN105483831B (en) * | 2015-12-04 | 2017-12-12 | 湖南红太阳光电科技有限公司 | For depressurizing the two stage sealing device of diffusion system |
| CN109630686A (en) * | 2018-12-21 | 2019-04-16 | 中化蓝天氟材料有限公司 | A kind of combination sealing system of reaction kettle agitating shaft and its application |
| CN109630686B (en) * | 2018-12-21 | 2020-08-28 | 中化蓝天氟材料有限公司 | Combined sealing system of reaction kettle stirring shaft and application thereof |
| CN110201616A (en) * | 2019-04-26 | 2019-09-06 | 威海汇鑫化工机械有限公司 | Magnetic drive reaction kettle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102606736B (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102606736A (en) | Sealing device for reaction kettles | |
| CN103075347A (en) | Gap self-adaptive mixed type dual-sealing structure for roots pump drive end | |
| CN201944274U (en) | Sealing device for agitated reactor | |
| RU190155U1 (en) | RADIAL GLOSS SEAL FOR ROTATING PARTS WITH FLOATING RING | |
| CN202418574U (en) | Mechanical seal structure for reaction kettle | |
| CN203585335U (en) | Mechanical sealing device used for thick slurry | |
| CN204258511U (en) | The hermetically-sealed construction of sliding bearing | |
| CN205118006U (en) | Deep groove ball bearing's seal structure | |
| CN211738029U (en) | Sealing device for kettle combining carbon ring and dry-running mechanical seal | |
| CN202867852U (en) | Novel mechanical seal capable of reducing end face deformation | |
| CN101963230A (en) | Sealing device of riding wheel | |
| CN203784304U (en) | Downstream pumping and upstream pumping combined type radial double-end-face mechanical sealing mechanism | |
| CN202612648U (en) | Zero-gravity dynamic pressure groove magnetic shaft sealing device | |
| CN203500097U (en) | Novel mechanical seal waterproof medicine pump | |
| CN208237082U (en) | A kind of pressure vessel packing stainless steel ring | |
| CN202165612U (en) | Nitrogen sealing structure of coal gas pressurizing machine | |
| CN201779266U (en) | High-speed rotary oil seal with dustproof lip flanges | |
| CN206206247U (en) | A kind of heavy duty multistage LNG pump rotor axial thrust balancing device | |
| CN203823075U (en) | Sealing lubricating system of heading machine | |
| CN205260303U (en) | Low noise pin formula high pressure vane pump and blade thereof | |
| CN204299939U (en) | Pump hermetically-sealed construction | |
| CN207960692U (en) | Actuating type packing | |
| CN202176470U (en) | Plunger type high pressure pump | |
| CN202867170U (en) | Water pump mechanical seal element | |
| CN204572544U (en) | For containing the counnter attack press pump dry gas seals in suspended solid medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jianming Inventor after: Wang Liming Inventor before: Wu Jianming Inventor before: Wang Liming Inventor before: Yuan Xinlei |
|
| CP02 | Change in the address of a patent holder |
Address after: 215316 Kunshan, Suzhou City, Yushan city town of Jade Road, No. 1 Patentee after: Kunshan Miyou Mechanical Seal Co., Ltd. Address before: 215316, No. 16 South hope road, Yushan Town, Kunshan City, Jiangsu, Suzhou Patentee before: Kunshan Miyou Mechanical Seal Co., Ltd. |