CN203500482U - External ultra-thin labyrinth seal with positioning device - Google Patents
External ultra-thin labyrinth seal with positioning device Download PDFInfo
- Publication number
- CN203500482U CN203500482U CN201320613997.9U CN201320613997U CN203500482U CN 203500482 U CN203500482 U CN 203500482U CN 201320613997 U CN201320613997 U CN 201320613997U CN 203500482 U CN203500482 U CN 203500482U
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- positioning device
- ring
- rotating ring
- stationary ring
- labyrinth
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides an external ultra-thin labyrinth seal with a positioning device, wherein the external ultra-thin labyrinth seal with the positioning device is used for carrying out sealing protection on outer sides of bearings of rotation devices such as a bearing box, a motor, a fan and a speed reducer. The labyrinth seal is arranged on the outer side of the bearing of one rotation device and is an integral assembly body combined by a static ring, a moving ring and a positioning device. The overall thickness of the integral assembly body in the axial direction is no larger than one third of the axial diameter. The positioning device is in contact with the moving ring and the static ring at the same time before shaft rotation is started and is not in contact with the moving ring and the static ring at the same time after shaft rotation is started. By means of the positioning device, the external ultra-thin labyrinth seal can ensure that labyrinth gaps will not be changed due to manual factors in installation, so that the moving ring and the static ring will not make contact and generate friction after the device is started or the leakage will not occur due to the fact that the labyrinth gaps are evenly distributed. Meanwhile, due to the ultra-thin design of the labyrinth seal, the entire seal adheres to the outer side of an end cover of a portion needing sealing in installation, an installation cavity is not needed, limitation on the sizes of the installation cavities of different devices is simplified, the seal can be installed outside the original seals of the devices and dual seal protection is provided.
Description
Technical field
The utility model relates to a kind of bearing protection device, is specifically related to a kind of ultrathin labyrinth sealing of external mounted that carries positioning device.
Background technique
Labyrinth sealing is to safeguard that bearing and oiling agent avoid the barrier of extraneous contamination, but the relative position in installation process between dynamic and static ring is difficult to fix, during equipment operation, may there is relative contact friction in dynamic and static ring, and cause fret wear, heating, even abrasive dust pollution lubricating agent, damages the problems such as bearing, mounting or dismounting inconvenience.Much equipment is as conventionally comparatively narrow and small in the bearing housing of motor, blower fan, speed reducer, machine tool chief axis etc., gear-box sealing space, installation place simultaneously, the labyrinth sealing axial thickness that tradition labyrinth groove is arranged is side by side often bigger than normal, be difficult to install, often need to carry out process and remould to equipment and could adapt to labyrinth sealed installation.And because distinct device cavity groove dimensions is variant, cause user's spare part specification various, traditional built-in type or half built-in type labyrinth sealing versatility are poor.
Summary of the invention
For the problems referred to above, the utility model provides a kind of ultrathin labyrinth sealing that carries positioning device, and its object is: make in installation process between dynamic and static ring relative position accurately fixing.
The utility model adopts following technological scheme:
Carry a ultrathin labyrinth sealing for positioning device, be arranged at equipment bearing one side, comprise stationary ring, rotating ring and positioning device, stationary ring, rotating ring and positioning device are combined as and collect dress body, collect the total axial thickness that fills body and are no more than 1/3 of equipment bearing diameter of axle size; Positioning device, between stationary ring and rotating ring, is used for fixing the relative position of stationary ring and rotating ring, and positioning device contacts with stationary ring with rotating ring before axle rotate to start simultaneously, and does not contact with stationary ring with rotating ring after axle rotation startup simultaneously.
Described positioning device is completely separated with rotating ring with stationary ring, can before installation, be drawn out of or take out, or be fixed on stationary ring or rotating ring.
Labyrinth sealing is plane or concave surface near fluid end face, and is positioned at the outside of equipment Seal cage or gland completely, does not stretch into equipment Seal cage or stretches into the part of gland.
Further, rotating ring and stationary ring are hard teflon, plastics or metal.The hardness of positioning device is lower than the hardness of stationary ring and rotating ring, in case dynamic and static ring is caused to damage during contact.
Described positioning device is arranged between rotating ring and stationary ring axial clearance or radial clearance, or all has between axial clearance and radial clearance, is used for fixing the relative axial position of stationary ring and rotating ring or relative position radially, or relative position axially and radially; Positioning device sectional shape is strip, ring-type or the blocks of hemisphere, quadrilateral, star, ellipse, T shape, ㄥ shape, Off shape, is fixed on stationary ring internal diameter, rotating ring external diameter or circumference and inserts between the corresponding groove of rotating ring external diameter, stationary ring internal diameter.
In addition, integrate dress body and can, as integrated type or split type structure, adopt the convenient installation of split type structure.
Positioning device of the present utility model can be accurately the fixing relative position between dynamic and static ring, guarantee that labyrinth clearance can the personal factor when installing not change, avoid after equipment operation, dynamic and static ring comes in contact friction, or causes leakage because of labyrinth clearance skewness.The total axial thickness of labyrinth sealing is simultaneously no more than 1/3 of diameter of axle size, for ultrathin type designs, and by external mounted design simplification specification, realized the general installation to most of equipment, without equipment is carried out to process and remould, increase the universal of product, reduce user's spare part specification.And the original sealing of the equipment that can be installed on outside, forms the multiple protective to equipment bearing.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural principle schematic diagram.
Fig. 2 is the utility model embodiment 2 structural principle schematic diagram.
Fig. 3 is the utility model embodiment 3 structural principle schematic diagram.
Embodiment
A kind of ultrathin labyrinth sealing that carries positioning device of the utility model can be installed for integrated type, also can install for split type.One side of stationary ring or a side end face and equipment end cap are connected and fixed or fix with equipment end exterior surface gluing, sealing.Positioning device can be accurately fixing by the relative position of stationary ring and rotating ring, and be removed before axle rotation starts or while starting, or on one side by natural wastage, thereby after axle rotates, can not produce lasting friction.During installation, this labyrinth seal integral plaster is combined in needs the end cap at sealing position outside, without chamber is installed.Guarantee that labyrinth clearance can the personal factor when installing not change.
As shown in Figure 1, a kind of ultrathin labyrinth sealing that carries positioning device of the utility model comprises the polyoxymethylene stationary ring 1 of outer ring part, the polyoxymethylene rotating ring 2 of inner round portion, is arranged at the positioning ring 3 that can take out between stationary ring 1 internal diameter and rotating ring 2 external diameters.Stationary ring 1 and rotating ring 2 are inlayed and are connected to one and collect dress body by positioning ring, by stationary ring 1 inner side end 14, be plane, bond and to be installed on the outside of equipment end cap.
Positioning ring 3 is as a whole with the nested snap close of rotating ring 2 stationary ring 1, can be not separated.Positioning ring 3 can take out design for flexibility, during installation, plays the role of positioning, and prevents stationary ring 1 and the direct contact friction of rotating ring 2.Install taking-up.
Between stationary ring 1 and rotating ring 2, be provided with and turn the labyrinth groove 4 differing in size that profile of tooth distributes, reached the object of abundant reasonable Arrangement labyrinth groove in the confined space, realized ultrathin design.Make medium natural inflate compression in labyrinth clearance and groove, discharge kinetic energy, complete the sealing to medium.
As shown in Figure 2, be another embodiment of the present utility model.
Between teflon stationary ring 1 and teflon rotating ring 2, be provided with axial hemisphere positioning block 5 and hemisphere positioning block 6 radially, positioning block 6 is fixed on the external diameter of rotating ring 2, at axle, rotates before starting and contacts with stationary ring.Rotating ring 2 is fixing with equipment axis sealing by O type circle 8, and stationary ring 1 inner side end 14 be concave surface, directly fixes with the laminating of equipment gland end face, and seal with O type circle 9 by screw 16.
Between stationary ring 1 and rotating ring 2, be provided with the labyrinth groove 7 that compact arrangement and ladder distribute, complete to the sealing of medium simultaneously, realized ultrathin design.
Axial hemisphere positioning block 5 and radially hemisphere positioning block 6 adopt self lubricating materials to make, and quantity is all more than two, and for circumferencial direction is uniformly distributed, is retained in labyrinth sealing inside after installation.Axially hemisphere positioning block 5 and the radially slight contact friction loss of hemisphere positioning block 6 equipment initial operating stages meeting, still play a protective role afterwards, prevents stationary ring 1 and the direct contact friction of rotating ring 2.
As shown in Figure 3, be another embodiment of the present utility model.The labyrinth sealing of this programme designs for split type.
Axially T shape positioning block 10 is design for disassembly, during installation, plays the role of positioning, and prevents copper stationary ring 1 and axially directly contact friction of copper rotating ring 2.Installing dismounting takes off.
Radially trapezoidal positioning block 11 adopts self lubricating material to make, and prevents the radially directly contact friction of stationary ring 1 and rotating ring 2.After installation, do not take out.
Between stationary ring 1 and rotating ring 2, be provided with the labyrinth groove 7 that compact arrangement and ladder distribute, complete to the sealing of medium simultaneously, realized ultrathin design.
Claims (6)
1. the ultrathin labyrinth sealing of external mounted that carries positioning device, be arranged at equipment bearing outside, it is characterized in that, comprise stationary ring, rotating ring and positioning device, stationary ring, rotating ring and positioning device are combined as and collect dress body, collect the total axial thickness that fills body and are no more than 1/3 of equipment bearing diameter of axle size; Positioning device, between stationary ring and rotating ring, is used for fixing the relative position of stationary ring and rotating ring, and positioning device contacts with stationary ring with rotating ring before axle rotate to start simultaneously, and does not contact with stationary ring with rotating ring after axle rotation startup simultaneously.
2. a kind of ultrathin labyrinth sealing of external mounted that carries positioning device according to claim 1, is characterized in that, described positioning device is completely separated with rotating ring with stationary ring, or is fixed on stationary ring or rotating ring.
3. a kind of ultrathin labyrinth sealing of external mounted that carries positioning device according to claim 1 and 2, is characterized in that, labyrinth sealing is plane or concave surface near fluid end face, and is positioned at the outside of equipment Seal cage or gland completely.
4. a kind of ultrathin labyrinth sealing of external mounted that carries positioning device according to claim 1 and 2, is characterized in that, the hardness of described positioning device is lower than the hardness of stationary ring and rotating ring.
5. a kind of ultrathin labyrinth sealing of external mounted that carries positioning device according to claim 1 and 2, is characterized in that the teflon that described rotating ring and stationary ring are hard, plastics or metal.
6. a kind of ultrathin labyrinth sealing of external mounted that carries positioning device according to claim 1 and 2, it is characterized in that, described positioning device is arranged between rotating ring and stationary ring axial clearance or radial clearance, or all has between axial clearance and radial clearance; Positioning device sectional shape is strip, ring-type or the blocks of hemisphere, quadrilateral, star, ellipse, T shape, ㄥ shape, Off shape, is fixed on stationary ring internal diameter, rotating ring external diameter or circumference and inserts between the corresponding groove of rotating ring external diameter, stationary ring internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613997.9U CN203500482U (en) | 2013-09-30 | 2013-09-30 | External ultra-thin labyrinth seal with positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320613997.9U CN203500482U (en) | 2013-09-30 | 2013-09-30 | External ultra-thin labyrinth seal with positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500482U true CN203500482U (en) | 2014-03-26 |
Family
ID=50331462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320613997.9U Expired - Lifetime CN203500482U (en) | 2013-09-30 | 2013-09-30 | External ultra-thin labyrinth seal with positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500482U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524812A (en) * | 2017-08-08 | 2017-12-29 | 东台市岳东橡胶密封件厂 | A kind of embedded rotating ring stationary ring attachment structure |
| CN113047999A (en) * | 2021-04-19 | 2021-06-29 | 哈尔滨电机厂有限责任公司 | Axial sealing device for oil groove of hydroelectric generating set |
| CN117704038A (en) * | 2024-02-06 | 2024-03-15 | 山东欧迈机械股份有限公司 | Vertical heavy-load oil-tight gearbox |
-
2013
- 2013-09-30 CN CN201320613997.9U patent/CN203500482U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524812A (en) * | 2017-08-08 | 2017-12-29 | 东台市岳东橡胶密封件厂 | A kind of embedded rotating ring stationary ring attachment structure |
| CN113047999A (en) * | 2021-04-19 | 2021-06-29 | 哈尔滨电机厂有限责任公司 | Axial sealing device for oil groove of hydroelectric generating set |
| CN113047999B (en) * | 2021-04-19 | 2023-04-25 | 哈尔滨电机厂有限责任公司 | Axial sealing device for oil groove of hydroelectric generating set |
| CN117704038A (en) * | 2024-02-06 | 2024-03-15 | 山东欧迈机械股份有限公司 | Vertical heavy-load oil-tight gearbox |
| CN117704038B (en) * | 2024-02-06 | 2024-04-09 | 山东欧迈机械股份有限公司 | Vertical heavy-load oil-tight gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160415 Address after: 210036, 309 Hanzhoung Avenue, Gulou District, Jiangsu, Nanjing Patentee after: ENVIRONMENTAL GASKET Co.,Ltd. Address before: 210036, 309 Hanzhoung Avenue, Gulou District, Jiangsu, Nanjing Patentee before: AIGI INDUSTRIAL GROUP OF COMPANIES Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |