CN201306445Y - Liquid film lubrication double end surface non-contact mechanical seal device - Google Patents
Liquid film lubrication double end surface non-contact mechanical seal device Download PDFInfo
- Publication number
- CN201306445Y CN201306445Y CNU2008201733283U CN200820173328U CN201306445Y CN 201306445 Y CN201306445 Y CN 201306445Y CN U2008201733283 U CNU2008201733283 U CN U2008201733283U CN 200820173328 U CN200820173328 U CN 200820173328U CN 201306445 Y CN201306445 Y CN 201306445Y
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- stationary ring
- dynamic pressure
- fluid dynamic
- pumping fluid
- rotating ring
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Abstract
A liquid film lubrication double end surface non-contact mechanical seal device mainly comprises an auxiliary seal including a screw seal and an oil seal, an inner side stationary ring, an outer side stationary ring and a rotating ring which is fixed on both ends of a shaft sleeve and form a seal pair together with the inner and the outer side stationary rings. A downstream pumping fluid dynamic pressure slot is formed on an inner end surface of the rotating ring which is matched with the inner side stationary ring; the outside diameter of the slot is equal to that of the rotating ring; the inside diameter of the slot is larger than that of the stationary ring; an upstream pumping fluid dynamic pressure slot is formed on an outer end surface of the rotating ring which is matched with the outer side stationary ring; the outside diameter of the slot is less than that of the rotating ring and the inside diameter of the slot thereof is larger than that of the stationary ring. Sealing liquid is pumped into sealing end surfaces via the downstream pumping fluid dynamic pressure slot formed on the inner end surface of the rotating ring, thereby forming a layer of fluid film; and the sealing end surfaces are separated. The liquid leaking from the sealing end surfaces enters A area; the liquid gathers and the pressure increases continuously; when the pressure increases to a certain degree, the liquid leaks slightly to the side of mediums along the oil seal; the leaking liquid enables the oil seal lip to separate from the shaft sleeve, thereby avoiding frictional contact and improving the service life of the oil seal.
Description
Technical field
The utility model relates to a kind of mechanical seal device, is meant a kind of fluid film lubrication Double End non-contact mechanical seal device especially.
Background technique
Industries such as oil, chemical industry, metallurgy, electric power are used to carry the fluid machinery shaft end seal that contains special medias such as solid particle, viscosity height, easy gum deposit, easy crystallization to have outstanding problems such as leakage is serious, working life is short, energy consumption is big always.Sword limit sealing as introduction as described in " mechanical seal practical technique " (China Machine Press July calendar year 2001 the 1st edition) P155, the P294, its design philosophy mainly is to utilize the formation of leptoprosopy scraping effect restriction solid sundries, form material or fiber also can be cut off and exclude by sharp limit, can also eliminate the influence of radial deformation, compressive resistance fluctuation and anti-high pressure, same heating intensity cools off down.But effect is unsatisfactory in actual use, particularly resists the ability of variable working condition, and the life-span is only about 1 month.Subject matter is: often because the solidifying of medium, crystallization, gum deposit etc. cause elastic element such as spring or bellows to be stuck and to follow the string, seal face can't fit tightly, and finally causes seal failure in sealing.
The model utility content
Technical problem to be solved in the utility model provides a kind of end face frictional wear of avoiding, and realizes the fluid film lubrication Double End non-contact mechanical seal device of non-contact running.
In order to address the above problem, the utility model is taked following technological scheme:
A kind of fluid film lubrication Double End non-contact mechanical seal device, the main auxiliary seal of forming by spiral seal and oil sealing, the inboard stationary ring of side medium, the outside stationary ring of atmospheric side and be installed in two ends and inboard stationary ring and outside stationary ring on the axle sleeve and form the rotating ring of sealing pair jointly and form, offer downstream pumping fluid dynamic pressure groove on rotating ring and the inner side end that inboard stationary ring cooperates, offer the pumping fluid dynamic pressure groove on rotating ring and the outside end face that outside stationary ring cooperates, the external diameter of downstream pumping fluid dynamic pressure groove equals the rotating ring external diameter, its internal diameter is greater than the stationary ring internal diameter, the external diameter of pumping fluid dynamic pressure groove is less than the stationary ring external diameter, and its internal diameter is greater than the stationary ring internal diameter.
The root of described pumping fluid dynamic pressure groove has an annular groove that it is connected.
The molded lines of described downstream pumping fluid dynamic pressure groove and pumping fluid dynamic pressure groove can be the curve of helix, circular arc line, straight line and any other form.
The degree of depth of the fluid dynamic pressure groove that rotating ring medial and lateral end face is offered can be constant, also can be shoaled gradually to the groove root by the groove end.
The beneficial effects of the utility model are: when sealing liquid along C to entering seal chamber, when sealing was started working, the downstream pumping fluid dynamic pressure groove that the rotating ring inner side end is offered pumped into seal face with sealing liquid, formed one deck fluid film, seal face separately.The fluid that leaks by seal face enters the a-quadrant, fluid is constantly assembled, pressure also constantly raises, when increasing to a certain degree, hydrodynamic pressure just can slightly leak to side medium along oil sealing, avoid medium to enter seal chamber, the fluid that leaks separates oil sealing lip and axle sleeve, avoids rubbing contact, raising oil sealing working life.It mainly is that the sealing liquid that will leak to atmospheric side returns and fail back seal chamber that rotating ring outside end face is offered the fluid dynamic pressure groove effect, thus the leakage of realization nothing.
Description of drawings
Fig. 1 is the sectional view of the utility model specific embodiment;
Fig. 2 is the axial sectional view of the utility model rotating ring;
Fig. 3 is the utility model rotating ring inner side end grooved schematic representation;
Fig. 4 is the utility model rotating ring outside end face grooved schematic representation;
Fig. 5 is the utility model spiral seal grooved schematic representation.
Among the figure:
1, spiral seal 2, oil sealing 3, stationary ring O shape circle 4, spring 5, inboard stationary ring 6, sealed case 8, rotating ring 9, outside stationary ring 10, axle sleeve 13, transmission ring 81, downstream pumping fluid dynamic pressure groove 82, pumping fluid dynamic pressure groove 14, stop pin 15, rotating ring O shape circle 16, snap ring 17, spiral chute C, sealing liquid importer to
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The purpose of this utility model aims to provide a kind of fluid film lubrication Double End non-contact mechanical seal device, overcome the problem that existing sealing exists, the utility model as rubber industry raw liquor pump shaft end seal as shown in Figure 1,5 is inboard stationary ring, 8 is rotating ring, 9 is outside stationary ring, and 1 is spiral seal, and 2 is oil sealing.Rotating ring 8 is fixed on the axle sleeve 10 and by O shape circle 15 by snap ring 16 and realizes sealing between the two.Transmission ring 13 drives axle sleeve 10 and rotates together, and gives rotating ring 8 by stop pin 14 with transmission of power.Inboard stationary ring 5 is by spring 4 flexible being installed on the sealed case 6, and by the 3 realization sealings of O shape circle, the flexible installation of stationary ring helps improving the ability that it follows rotating ring.Spring action is to guarantee all the time that in state of rest stationary ring and rotating ring end face fit tightly, and prevents to leak the opening force that provides necessary closing force to be used for the formation of balanced seal end face when normal working.Oil sealing 2 is installed on the sealed case 6, and spiral seal 1 inner side end is offered the rectangular coil groove and is connected with sealed case 6 interference fit, compresses oil sealing 2 simultaneously.
In conjunction with Fig. 2, Fig. 3 and Fig. 5,17 expression spiral chutes among Fig. 5, the inner side end that rotating ring 8 cooperates with inboard stationary ring 5 is provided with downstream pumping fluid dynamic pressure groove 81, this groove external diameter equals the external diameter of rotating ring 8, and the groove internal diameter is greater than the internal diameter of inboard stationary ring 5, with reference to Fig. 2, Fig. 4 and Fig. 5, the outside end face that rotating ring 8 cooperates with outside stationary ring 9 is provided with pumping fluid dynamic pressure groove 82, this groove external diameter is less than the external diameter of outside stationary ring 9, and the groove internal diameter is greater than the internal diameter of stationary ring 9, and root has an annular groove that it is connected.
When sealing liquid along C to entering seal chamber, when sealing was started working, the downstream pumping fluid dynamic pressure groove that rotating ring 8 inner side ends are offered pumped into seal face with sealing liquid, formed one deck fluid film, seal face separately.The fluid that leaks by seal face enters A (side medium) zone, fluid is constantly assembled, pressure also constantly raises, when increasing to a certain degree, hydrodynamic pressure just can slightly leak (less than 1.0L/h) to side medium along oil sealing 2, the fluid that leaks makes oil sealing 2 lips separate with axle sleeve, avoid rubbing contact, improve oil sealing working life.In addition, oil sealing can stop dielectric leakage in sealed case in state of rest.Spiral seal 1 effect is that the medium pump to leakage of seal chamber is sent back, and avoids it to leak into seal chamber and damages sealed member.
It mainly is that the sealing liquid that will leak to atmospheric side returns and fails back seal chamber that rotating ring 8 outside end faces are offered the fluid dynamic pressure groove effect, leaks thereby realize not having.The effect of fluid dynamic pressure groove root annular groove is to make the fluid film pressure distribution that forms between seal face more even, improves its opposing disturbance ability.Like this, not only realize seal face non-contact running, reaching sealing liquid does not simultaneously have leakage.Its inner side end downstream pump square auger groove trench structure as shown in Figure 3, its groove depth shoals from outside to inside gradually, effect is that the outside is pumped to the dynamic and static ring sealing end face along C to the sealing liquid that enters sealed case, pumping fluid pressure is raise, make A place sealing liquid pressure be higher than sealed medium glue pressure, it is sticking dead with spring to prevent that glue from leaking to sealing part.Owing to form one deck liquid film between inboard stationary ring 5 and the rotating ring 8, avoid end face frictional wear, the sealing long service life.Rotating ring 8 outside end face middle groove trench structures as shown in Figure 4, its effect is that the sealing liquid reverse pumping of leaking is gone back, and realizes end face non-contact running simultaneously, reduces end-face friction, wearing and tearing, prolongs sealing working life.Sealing applications described in the utility model has thoroughly solved the former problem that working life is short, energy consumption is big, leakage is serious that seals in domestic rubber industry raw liquor pump shaft end seal, has realized the modern production new concept of energy-saving and environmental protection.
The utility model major advantage is: opposing external disturbance ability is strong, can realize the sealed medium zero leakage, avoids end face frictional wear, low, the long service life of friction power loss, energy-saving and environmental protection.The utility model is applicable to that various fluid machinery sealings, particularly conveying height contain fluid machineries such as the centrifugal pump of media such as solid particle, viscosity height, easily crystallization, gum deposit, screw pump, stirrer.
The molded lines of downstream pumping fluid dynamic pressure groove 81 and pumping fluid dynamic pressure groove 82 can be the curve of helix, circular arc line, straight line and any other form.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1, a kind of fluid film lubrication Double End non-contact mechanical seal device, the main auxiliary seal of forming by spiral seal and oil sealing, the inboard stationary ring of side medium, the outside stationary ring of atmospheric side and the two ends that are installed on the axle sleeve are formed with the rotating ring that inboard stationary ring and outside stationary ring are formed sealing pair jointly, it is characterized in that, offer downstream pumping fluid dynamic pressure groove on rotating ring and the inner side end that inboard stationary ring cooperates, offer the pumping fluid dynamic pressure groove on rotating ring and the outside end face that outside stationary ring cooperates, the external diameter of downstream pumping fluid dynamic pressure groove equals the rotating ring external diameter, its internal diameter is greater than the stationary ring internal diameter, the external diameter of pumping fluid dynamic pressure groove is less than the stationary ring external diameter, and its internal diameter is greater than the stationary ring internal diameter.
2, mechanical seal device according to claim 1 is characterized in that, the root of described pumping fluid dynamic pressure groove has an annular groove that it is connected.
3, mechanical seal device according to claim 1 and 2 is characterized in that, the molded lines of described downstream pumping fluid dynamic pressure groove and pumping fluid dynamic pressure groove can be the curve of helix, circular arc line, straight line and any other form.
4, mechanical seal device according to claim 1 and 2, it is characterized in that, the downstream pumping fluid dynamic pressure groove that rotating ring medial and lateral end face is offered and the degree of depth of pumping fluid dynamic pressure groove can be constant, also can be shoaled gradually to the groove root by the groove end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201733283U CN201306445Y (en) | 2008-10-16 | 2008-10-16 | Liquid film lubrication double end surface non-contact mechanical seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201733283U CN201306445Y (en) | 2008-10-16 | 2008-10-16 | Liquid film lubrication double end surface non-contact mechanical seal device |
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| Publication Number | Publication Date |
|---|---|
| CN201306445Y true CN201306445Y (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201733283U Expired - Lifetime CN201306445Y (en) | 2008-10-16 | 2008-10-16 | Liquid film lubrication double end surface non-contact mechanical seal device |
Country Status (1)
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| CN (1) | CN201306445Y (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968117A (en) * | 2010-09-13 | 2011-02-09 | 清华大学 | Spiral groove end face seal device with transitional groove wall structure |
| CN102518809A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN103233910A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Integrated bellows mechanical seal device for pump |
| CN103267131A (en) * | 2013-06-02 | 2013-08-28 | 西华大学 | Non-contact type mechanical sealing device |
| CN103527792A (en) * | 2013-11-06 | 2014-01-22 | 南京林业大学 | Rotating seal ring with upstream pumping mechanical seal and end face type grooves thereof |
| CN103821942A (en) * | 2013-07-03 | 2014-05-28 | 东营海森密封技术有限责任公司 | Double mechanical sealing method and double mechanical sealing device for kettle gas films |
| CN103821943A (en) * | 2013-07-03 | 2014-05-28 | 东营海森密封技术有限责任公司 | Non-contact mechanical sealing method and non-contact mechanical sealing device for high-temperature and high-viscosity medium pump |
| CN103836196A (en) * | 2014-01-26 | 2014-06-04 | 清华大学 | Intelligent fluid dynamic pressure mechanical seal device achieving rotating speed self-adaption |
| CN105065675A (en) * | 2015-07-24 | 2015-11-18 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105840836A (en) * | 2016-05-13 | 2016-08-10 | 宝鸡市博磊化工机械有限公司 | Mechanical seal device |
| CN105840827A (en) * | 2016-05-13 | 2016-08-10 | 宝鸡市博磊化工机械有限公司 | Non-contact mechanical sealing device |
| CN107355530A (en) * | 2017-08-17 | 2017-11-17 | 四川日机密封件股份有限公司 | The sealing ring and its sealing device of non-contact zero leakage |
| CN108506352A (en) * | 2018-03-27 | 2018-09-07 | 北京化工大学 | A kind of sealing bearing and mechanical equipment |
| CN109764134A (en) * | 2019-03-06 | 2019-05-17 | 西安石油大学 | It is a kind of with stablize air film connection annular groove dry-gas sealed friction pair rotating ring |
| CN110397741A (en) * | 2019-08-28 | 2019-11-01 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanically-sealing apparatus |
| CN112943933A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943615A (en) * | 2021-02-18 | 2021-06-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft and compressor |
| CN112943932A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability zero-leakage steam turbine shaft end sealing method |
| CN114001159A (en) * | 2020-07-28 | 2022-02-01 | 上海汽车集团股份有限公司 | Sealing device of air compressor |
| CN114396381A (en) * | 2022-02-21 | 2022-04-26 | 广东美芝制冷设备有限公司 | Roller, compressor and temperature adjusting device |
| WO2022088272A1 (en) * | 2020-10-26 | 2022-05-05 | 常熟理工学院 | Sealing device for variable-working-condition gas-liquid two-phase fluid medium |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
-
2008
- 2008-10-16 CN CNU2008201733283U patent/CN201306445Y/en not_active Expired - Lifetime
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968117B (en) * | 2010-09-13 | 2012-10-24 | 清华大学 | Spiral groove end face seal device with transitional groove wall structure |
| CN101968117A (en) * | 2010-09-13 | 2011-02-09 | 清华大学 | Spiral groove end face seal device with transitional groove wall structure |
| CN102518809B (en) * | 2011-12-29 | 2015-04-22 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN102518809A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN103233910A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Integrated bellows mechanical seal device for pump |
| CN103233910B (en) * | 2013-04-13 | 2015-11-04 | 丹东克隆集团有限责任公司 | Pump integrated form mechanical seal device for rubber bellows |
| CN103267131A (en) * | 2013-06-02 | 2013-08-28 | 西华大学 | Non-contact type mechanical sealing device |
| CN103267131B (en) * | 2013-06-02 | 2016-05-11 | 西华大学 | Non-contact mechanical seal device |
| CN103821942A (en) * | 2013-07-03 | 2014-05-28 | 东营海森密封技术有限责任公司 | Double mechanical sealing method and double mechanical sealing device for kettle gas films |
| CN103821943A (en) * | 2013-07-03 | 2014-05-28 | 东营海森密封技术有限责任公司 | Non-contact mechanical sealing method and non-contact mechanical sealing device for high-temperature and high-viscosity medium pump |
| CN103527792A (en) * | 2013-11-06 | 2014-01-22 | 南京林业大学 | Rotating seal ring with upstream pumping mechanical seal and end face type grooves thereof |
| CN103836196A (en) * | 2014-01-26 | 2014-06-04 | 清华大学 | Intelligent fluid dynamic pressure mechanical seal device achieving rotating speed self-adaption |
| CN103836196B (en) * | 2014-01-26 | 2016-04-13 | 清华大学 | A kind of rotating speed self-adapting intelligent type hydrodynamic mechanical seal device |
| CN105065675B (en) * | 2015-07-24 | 2017-02-22 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105065675A (en) * | 2015-07-24 | 2015-11-18 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105840827A (en) * | 2016-05-13 | 2016-08-10 | 宝鸡市博磊化工机械有限公司 | Non-contact mechanical sealing device |
| CN105840836A (en) * | 2016-05-13 | 2016-08-10 | 宝鸡市博磊化工机械有限公司 | Mechanical seal device |
| CN107355530A (en) * | 2017-08-17 | 2017-11-17 | 四川日机密封件股份有限公司 | The sealing ring and its sealing device of non-contact zero leakage |
| CN108506352A (en) * | 2018-03-27 | 2018-09-07 | 北京化工大学 | A kind of sealing bearing and mechanical equipment |
| CN109764134A (en) * | 2019-03-06 | 2019-05-17 | 西安石油大学 | It is a kind of with stablize air film connection annular groove dry-gas sealed friction pair rotating ring |
| CN110397741A (en) * | 2019-08-28 | 2019-11-01 | 东营海森密封技术有限责任公司 | A kind of shaft end mechanically-sealing apparatus |
| CN110397741B (en) * | 2019-08-28 | 2024-04-26 | 东营海森密封技术有限责任公司 | Shaft end mechanical sealing device |
| CN114001159A (en) * | 2020-07-28 | 2022-02-01 | 上海汽车集团股份有限公司 | Sealing device of air compressor |
| WO2022088272A1 (en) * | 2020-10-26 | 2022-05-05 | 常熟理工学院 | Sealing device for variable-working-condition gas-liquid two-phase fluid medium |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
| CN112943932A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability zero-leakage steam turbine shaft end sealing method |
| CN112943933B (en) * | 2021-02-04 | 2024-01-12 | 宁波维希密封工业有限公司 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943932B (en) * | 2021-02-04 | 2024-01-19 | 灿因工业技术(宁波)有限公司 | High-reliability zero-leakage steam turbine shaft end sealing method |
| CN112943933A (en) * | 2021-02-04 | 2021-06-11 | 柏燕 | High-reliability low-torque zero-leakage steam turbine shaft end sealing device |
| CN112943615A (en) * | 2021-02-18 | 2021-06-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft and compressor |
| CN112943615B (en) * | 2021-02-18 | 2022-05-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Crankshaft and compressor |
| CN114396381A (en) * | 2022-02-21 | 2022-04-26 | 广东美芝制冷设备有限公司 | Roller, compressor and temperature adjusting device |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090909 |
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| CX01 | Expiry of patent term |