CN202612646U - Mechanical sealing device with intermediate differential ring - Google Patents
Mechanical sealing device with intermediate differential ring Download PDFInfo
- Publication number
- CN202612646U CN202612646U CN 201220148219 CN201220148219U CN202612646U CN 202612646 U CN202612646 U CN 202612646U CN 201220148219 CN201220148219 CN 201220148219 CN 201220148219 U CN201220148219 U CN 201220148219U CN 202612646 U CN202612646 U CN 202612646U
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- China
- Prior art keywords
- ring
- main driving
- speed
- rotary
- planetary
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a mechanical sealing device with an intermediate differential ring. An intermediate ring is arranged between a rotary ring and a stationary ring, which are driven by a sealed rotary shaft, wherein sealing end faces of the rotary ring and the stationary ring are opposite; two end faces of the intermediate ring are respectively opposite to the rotary ring and the stationary ring; the intermediate ring has rotary speed difference and is driven by a planetary gear train speed-changing unit with a main driving shaft to rotate; a rotary supporting shaft sleeve of the main driving shaft in the planetary gear train speed-changing unit is rigidly connected with a supporting shaft sleeve of a planetary shaft through a tie rod rack; a main driving gear which is fixedly connected with the main driving shaft is in meshed transmission with a first planetary gear which is fixedly connected to the planetary shaft; a second planetary gear which is fixedly connected with the planetary shaft is meshed with a gear which is coaxial with the rotary supporting shaft sleeve of the main driving shaft and fixed with a base; and the rotary supporting shaft sleeve of the main driving shaft is in transmission connection with the intermediate ring. By adoption of the mechanical sealing device with the intermediate differential ring, the relative rotary speed of the sealing end faces is adjustable and cannot be directly determined by the rotary speed of a sealed unit, and low-speed mechanical sealing can be high in stability.
Description
Technical field
The utility model belongs to a kind of axial end seal arrangement of rotating machinery, can be used for the axial end sealing of rotation type machines such as compressor, decompressor, seperator, pump, reaction kettle.
Background technique
Mechanical seal is widely used in the axial end face seal of numerous rotating machineries.Because of its working condition is complicated, particularly the stability of high speed and low speed unit axial end sealing is two difficult point problems of puzzlement researcher all the time.For example, contact-type mechanical seal relative rotation speed between the fast state lower sealing surface is too high, causes phenomenons such as sealing surface friction, wearing and tearing, heating, distortion serious, and sealability descends rapidly, even cisco unity malfunction; And contactless mechanical seal fluid film between the low speed state lower end surface can not generate enough opening forces and rigidity, can't guarantee the normal separation of sealing surface and the stability in gap.For traditional mechanical seal, be in general circumferential being fixed on of rotating ring of rotation status during work by on the running shaft of sealing machine, cause under the condition given by sealing machine, be difficult to initiatively change the relative rotation speed between moving/stationary ring sealing surface.
Publication number CN101806362A proposed a kind of be provided with both ends of the surface respectively with moving/stationary ring relatively and mechanical seal device with central ring form of speed discrepancy; Having changed the relative rotation speed between two sealing surfaces of doing mechanical seal through middle rotating ring, is a kind of effective sealing surface relative rotation speed regulate and control method.But adjustment and control for middle rotating ring rotating speed are difficult point problems.
The model utility content
Given this, the utility model provides a kind of mechanical seal device with middle differential ring, with the adjustment and the control problem of rotating ring rotating speed in the middle of solving satisfactorily.
The mechanical seal device of differential ring in the middle of the utility model band; Be be oppositely arranged with seal face by by between the shaft-driven rotating ring of rotation (being rotating ring) and stationary ring (being stationary ring) that seal; Be provided with both ends of the surface respectively with rotating ring and stationary ring relatively and have on the basis of central ring of speed discrepancy, make this central ring by planetary gear train variable-speed unit rotary driving with main driving axle.The swivel bearing axle sleeve of main driving axle is rigidly connected through the supporting sleeve of tie-rod frame and planet axis in this planetary gear train variable-speed unit; With main driving axle main actuation gear that is connected and the first planetary pinion engagement driving that is fixed on planet axis; Second planetary pinion that is connected with planet axis with coaxial with main driving axle swivel bearing axle sleeve and with the fixing gear engagement of support, the swivel bearing axle sleeve and the central ring of main driving axle are in transmission connection.
In the mechanical seal device of the middle differential ring of the above-mentioned band of the utility model; The main driving axle of said this planetary gear train variable-speed unit; Can be the mode that drives by the independent power source; But preferably directly adopt this running shaft that is sealed, utilize the power of machine running shaft self, drive this centre differential ring through the planetary gear train variable-speed unit.
On the basis of said structure, the mechanical seal device of differential ring in the middle of the above-mentioned band of the utility model, also can be respectively adopt following further optimal way with the mode of independent or combination in any:
Be the transmission of outer gearing mode between the said main actuation gear and first planetary pinion.
Said second planetary pinion and and the gear that fixes of support between be the transmission of outer gearing mode.
Said central ring is in transmission connection through the driving pin mode with the swivel bearing axle sleeve of its internal side diameter and main driving axle.
Gear transmission is one of most important type of belt drive in mechanical transmission, is widely used, and transmission efficiency is high, and velocity ratio is big, compact structure, and the life-span is long, and velocity ratio is stable, and especially some planetary gear train can be realized bigger velocity ratio.In the mechanical seal structure that is provided with middle rotating ring; Particularly utilize in the rotating machinery by the power of seal shaft self; Make the relative rotation speed between seal face realize adjustable through planetary gear train; Come the initiatively rotating speed of the middle rotating ring of adjustment by the rotating speed after resulting speedup after the speed change or the deceleration, thereby make the rotating speed that is sealed unit directly not determine the relative rotation speed between seal face, make the seal face of different rotating speeds unit running shaft can both obtain a suitable relative rotational; Broken away from the adverse effect that sealability is produced because of by the rotating speed of seal shaft; Especially can make the low-speed machinery sealing have higher stability, promote the stability and the working life of mechanical seal, solve an above-mentioned difficult problem satisfactorily.
Below in conjunction with embodiment, the foregoing of the utility model is remake further detailed description by the accompanying drawing illustrated embodiment.But should this be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following instance.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in the scope of the utility model.
Description of drawings
Fig. 1 is a kind of principle schematic of the mechanical seal device of differential ring in the middle of the utility model band.
Fig. 2 is the structural representation of a kind of mechanical seal device corresponding with Fig. 1.
Embodiment
As depicted in figs. 1 and 2; In the mechanical seal device of the middle differential ring of the utility model band; Be provided with by the shaft-driven rotating ring of the rotation that is oppositely arranged with seal face (rotating ring) 1 with through stop pin 11 and stationary seat 8 and be located by connecting and be combined with the stationary ring (stationary ring) 3 of throw-out collar 9 and spring 10; Between rotating ring 1 and stationary ring 3, also be provided with its both ends of the surface respectively with rotating ring 1 and stationary ring 3 relatively and have a central ring 2 of speed discrepancy.This central ring 2 is by the planetary gear train variable-speed unit rotary driving of the running shaft that is sealed as the main driving axle I.In this planetary gear train variable-speed unit; The swivel bearing axle sleeve 4 of main driving axle I is rigidly connected through the supporting sleeve 6 of tie-rod frame 5 with the planet axis II; And the main actuation gear Z1 that the main driving axle I is connected and be fixed between the first planetary pinion Z2 of planet axis II beyond the engagement system transmission; And the second planetary pinion Z3 that the planet axis II is connected with and main driving axle swivel bearing axle sleeve 4 is coaxial and and the fixing gear Z4 of support 7 between the transmission of outer gearing mode, central ring 2 is in transmission connection through the driving pin mode with the swivel bearing axle sleeve 4 of its internal side diameter and main driving axle I.
The rotating speed of this central ring 2 can be realized by the planetary gear train variable-speed unit as required that the rotational speed of establishing sealing unit running shaft (being the main driving axle of planetary gear train variable-speed unit) I is n
1, the rotational speed of central ring 2 is n
2, gear ratio value i=n
2/ n
1Use the unit situation according to present mechanical seal, its rotating speed of higher rotation speed unit is about 7000 ~ 15000rpm, and medium its rotating speed of rotating speed unit is about 2500 ~ 4000rpm, is about 20 ~ 1000rpm than its rotating speed of slow-speed of revolution unit.According to actual use condition, rotating speed can obtain higher fluid film rigidity and stability at 8000 ~ 10000rpm scope inner sealing surface.Therefore above-mentioned seal arrangement is 8000 ~ 10000rpm with adjusted rotating speed of target; And the efficient of transmission with due regard to; The span of confirming this rotating speed ratio i can be 1 ~ 200, can realize through the number of teeth of the gear Z1 in the change planetary gear train variable-speed unit, Z2, Z3, Z4.
Claims (5)
1. the mechanical seal device of differential ring in the middle of being with; Be oppositely arranged with seal face by by between the shaft-driven rotating ring of rotation (1) and stationary ring (3) that seal; Be provided with both ends of the surface respectively with rotating ring (1) and stationary ring (3) relatively and have a central ring (2) of speed discrepancy; It is characterized in that central ring (2) is by the planetary gear train variable-speed unit rotary driving with main driving axle (I); The swivel bearing axle sleeve (4) of main driving axle in the planetary gear train variable-speed unit (I) is rigidly connected through the supporting sleeve (6) of tie-rod frame (5) with planet axis (II); With main driving axle (I) main actuation gear (Z1) that is connected and first planetary pinion (Z2) engagement driving that is fixed on planet axis (II); Second planetary pinion (Z3) that is connected with planet axis (II) with coaxial with main driving axle swivel bearing axle sleeve (4) and with fixing gear (Z4) engagement of support (7), the swivel bearing axle sleeve (4) of main driving axle (I) is in transmission connection with central ring (2).
2. the mechanical seal device of differential ring in the middle of the band as claimed in claim 1, the main driving axle (I) that it is characterized in that said planetary gear train variable-speed unit is the running shaft that is sealed.
3. the mechanical seal device of differential ring in the middle of the band as claimed in claim 1 is characterized in that being between said main actuation gear (Z1) and first planetary pinion (Z2) transmission of outer gearing mode.
4. the mechanical seal device of differential ring in the middle of the band as claimed in claim 1, it is characterized in that said second planetary pinion (Z3) with and the gear (Z4) that fixes of support between be the transmission of outer gearing mode.
5. like the mechanical seal device of differential ring in the middle of the described band of one of claim 1 to 4, it is characterized in that said central ring (2) is in transmission connection through the driving pin mode with the swivel bearing axle sleeve (4) of its internal side diameter and main driving axle (I).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148219 CN202612646U (en) | 2012-04-10 | 2012-04-10 | Mechanical sealing device with intermediate differential ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148219 CN202612646U (en) | 2012-04-10 | 2012-04-10 | Mechanical sealing device with intermediate differential ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612646U true CN202612646U (en) | 2012-12-19 |
Family
ID=47346347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220148219 Expired - Fee Related CN202612646U (en) | 2012-04-10 | 2012-04-10 | Mechanical sealing device with intermediate differential ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612646U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822746A (en) * | 2016-05-14 | 2016-08-03 | 袁廷华 | Double-planet-gear differential speed reducer |
| CN108799444A (en) * | 2018-08-30 | 2018-11-13 | 浙江工业大学 | Planetary differential radial double mechanical seal |
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
| CN110307298A (en) * | 2019-06-19 | 2019-10-08 | 哈尔滨工业大学（威海） | A kind of mechanical dynamic seal device based on planetary gear mechanism |
-
2012
- 2012-04-10 CN CN 201220148219 patent/CN202612646U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822746A (en) * | 2016-05-14 | 2016-08-03 | 袁廷华 | Double-planet-gear differential speed reducer |
| CN108799444A (en) * | 2018-08-30 | 2018-11-13 | 浙江工业大学 | Planetary differential radial double mechanical seal |
| CN108799444B (en) * | 2018-08-30 | 2024-03-26 | 浙江工业大学 | Planetary differential radial double-end-face mechanical seal |
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
| CN110307298A (en) * | 2019-06-19 | 2019-10-08 | 哈尔滨工业大学（威海） | A kind of mechanical dynamic seal device based on planetary gear mechanism |
| CN110307298B (en) * | 2019-06-19 | 2022-06-07 | 哈尔滨工业大学（威海） | Mechanical dynamic sealing device based on planetary gear mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20130410 |