CN204784218U - Bearing seal - Google Patents
Bearing seal Download PDFInfo
- Publication number
- CN204784218U CN204784218U CN201520458952.8U CN201520458952U CN204784218U CN 204784218 U CN204784218 U CN 204784218U CN 201520458952 U CN201520458952 U CN 201520458952U CN 204784218 U CN204784218 U CN 204784218U
- Authority
- CN
- China
- Prior art keywords
- bearing
- seal ring
- seal
- lip
- high pressure
- 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.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 9
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 5
- 241001125879 Gobio Species 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a bearing seal, including the axle bush of suit on the bearing and the bearing housing of cover on the axle bush, the both ends branch of bearing maybe water under high pressure and air, bearing and axle bush between set up seal structure, seal structure include the sealing washer, the sealing washer be located the one end of being close to the water under high pressure on the bearing, the sealing washer open on the terminal surface of one side of water under high pressure and have lip and first annular chute, first annular dovetail trench the one end department of bearing is kept away from in the lip to form the end face seal lip between first annular chute and the lip, the sealing washer in the anchor ring set up second annular chute, second annular chute and lip between form the axial seal lip. The beneficial effects of the utility model are that the poor technical defect of bearing seal structure sealing effect among the prior art has been solved.
Description
Technical field
Bearing shell is the part of sliding bearing and journal contact, shape is cylinder, internal layer is self lubricating material, general bronze, the high-abrasive materials such as antifriction alloy are made, the feature of bearing shell is: friction factor is little, there is enough fatigue strength, good running-in and good corrosion resistance, therefore be widely used in hydraulic turbine generator water inlet main valve, the usage of bearing shell in turbine-generator units main valve is: on the central position of main inlet valve spool substantially horizontal both sides, install gudgeon, spool rotates around gudgeon, gudgeon is set with bearing shell, bearing shell and main inlet valve shell are interference fit, the side of main inlet valve gudgeon is high pressure water, opposite side is air, because the pressure of high pressure water is larger, high pressure water is easy to ooze out between bearing shell and bearing, therefore, sealing configuration to be set between bearing shell and bearing, existing sealing configuration is exactly one and is enclosed within the seal ring that bearing is made up of O type nitrile butadiene rubber, due to seal ring and the bearing of prior art and the surface of contact of bearing shell larger and make the reason of material, existing seal ring has easy to wear, easily aging, the defect of sealing effect difference.
Summary of the invention
The purpose of this utility model is to provide a kind of bearing seal, solves the technological deficiency of bearing seal sealing effect difference of the prior art.
For solving the problem, technical solution adopted in the utility model is:
A kind of bearing seal, comprise the bearing shell be sleeved on bearing and the bearing housing be enclosed within bearing shell, the two ends of described bearing are high pressure water and air respectively, between described bearing and bearing shell, sealing configuration is set, described sealing configuration comprises seal ring, described seal ring is positioned at the one end near high pressure water on bearing, described seal ring has lip and the first annular skewed slot on a side end face of high pressure water, described first annular dovetail trench is in one end place of lip away from bearing, and form end face seal lip between the first annular skewed slot and lip, described seal ring inner ring surface arranges the second annular skewed slot, axial seal lip is formed between described second annular skewed slot and lip.
Seal arrangement in the utility model has two lips, when high pressure water enters in lip, because seal ring has the first annular skewed slot on the end face of high pressure water side, seal ring inner ring surface has the second annular skewed slot, therefore under the effect of high-pressure water pressure, end face seal lip is extruded by the direction towards bearing shell, and be close to bearing shell, form the sealing (i.e. end face seal) between bearing shell, under the effect of high-pressure water pressure, axial seal lip is extruded, be close to bearing, form the sealing (i.e. axial seal) between bearing, due to the axis (i.e. axial seal) of bearing shell and bearing and radial (i.e. end face seal) all realizing sealing, therefore sealing effect is better, even if sealing of the present utility model is worn, under the pressure effect of high pressure water, still can make lip and bearing and bearing shell close contact, keep good sealing effect.
As further improvement of the utility model, described seal ring outer ring surface has the first circular groove, arrange the first seal ring in the first described circular groove, the longitudinal section of the first described seal ring is V-shaped, and the opening of the first described seal ring is towards high pressure water side.
The outer ring surface of seal ring is opened the first circular groove, reduce the area of contact of seal ring and bearing shell, thus the friction reduced between seal ring and bearing shell, the wearing and tearing of seal ring reduce, in the first circular groove, arrange longitudinal section is the first seal ring that V is capable, when high pressure water in lip enters in the first circular groove from the end of seal ring, because the opening of the first seal ring is towards high pressure water side, therefore under the effect of high pressure water, first seal ring is extruded into respectively and fits with bearing shell and seal ring, thus realize sealing, further enhancing bearing seal sealing effect diametrically.
As further improvement of the utility model, the inner ring surface of described seal ring has the second circular groove, second seal ring and the 3rd seal ring are set in the second described circular groove, the longitudinal section of the second described seal ring is O type, the overall longitudinal section of the 3rd described seal ring is L-shaped, the face that the 3rd described seal ring and bearing are fitted is corrugated, and the second described seal ring is arranged on the described 3rd between seal ring and seal ring.
The inner ring surface of seal ring is opened the second circular groove, reduce the area of contact of seal ring and bearing, thus the friction reduced between seal ring and bearing, the wearing and tearing of seal ring reduce, the 3rd seal ring that the second seal ring that longitudinal section is O shape and longitudinal section are L shape is set in the second circular groove, on the one hand, when high pressure water is from when entering in the second circular groove, extrude the second seal ring and the 3rd seal ring, the 3rd seal ring is made to be close to bearing, thus realize the sealing of the 3rd seal ring, further strengthen bearing seal sealing effect in the axial direction, on the other hand, the face of fitting due to the 3rd seal ring and bearing becomes corrugated, therefore, 3rd area of contact between seal ring with bearing is relative to be reduced, friction between the two also reduces accordingly, the wearing and tearing of the 3rd seal ring reduce.
As further improvement of the utility model, the material of described seal ring and the first seal ring is teflon.
Teflon material has antiacid alkali resistant, the characteristic that ageing-resistant, the coefficient of waste is low, and bearing rotates little to the frictional force of the first seal ring, weares and teares also little, not easily aging.
As further improvement of the utility model, the material of the second described seal ring and the 3rd seal ring is nitrile butadiene rubber.
Nitrile butadiene rubber wear resistance is higher, and heat resistance is better, makes the second seal ring and the 3rd seal ring, solve the defect that existing seal ring is easy to wear, easily aging with nitrile butadiene rubber.
In sum, the beneficial effects of the utility model are: solve prior art middle (center) bearing sealing configuration easy to wear, easily aging, the technological deficiency of sealing effect difference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Wherein: 1, bearing; 2, bearing shell; 3, bearing housing; 4, seal ring; 5, lip; 6, the first annular skewed slot; 7, end face seal lip; 8, the second annular skewed slot; 9, axial seal lip; 10, the first circular groove; 11, the first seal ring; 12, the second circular groove; 13, the second seal ring; 14, the 3rd seal ring.
Embodiment
Bearing seal as shown in Figure 1, comprise the bearing shell 2 be sleeved on bearing 1 and the bearing housing 3 be enclosed within bearing shell 2, the two ends of described bearing 1 are high pressure water and air respectively, between described bearing 1 and bearing shell 2, sealing configuration is set, described sealing configuration comprises the seal ring 4 be made up of polytetrafluoroethylmaterial material, described seal ring 4 is positioned at the one end near high pressure water on bearing 1, described seal ring 4 has lip 5 and the first annular skewed slot 6 on the end face of the side of high pressure water, described first annular skewed slot 6 is positioned at one end place of lip 5 away from bearing 1, and form end face seal lip 7 between the first annular skewed slot 6 and lip 5, described end face seal lip 7 points to bearing 1 and to high pressure water lopsidedness, described seal ring 4 inner ring surface arranges the second annular skewed slot 8, forms axial seal lip 9 between the described second annular skewed slot 8 and lip 5, and end and the bearing 1 of described axial seal lip 9 are fitted.The utility model utilizes the pressure of high pressure water that the end face seal lip 7 of seal ring 4 and axial seal lip 9 are depressed into respectively and fits with bearing shell 2 and bearing 1, thus the honeybee realized in axis between seal ring 4 pairs of bearing shells 2 and bearing 1 and radial direction, good sealing effect.
Seal ring 4 outer ring surface described in the utility model has the first circular groove 10, in the first described circular groove 10, the first seal ring 11 be made up of polytetrafluoroethylmaterial material is set, the longitudinal section of the first described seal ring 11 is V-shaped, and the opening of the first described seal ring 11 is towards high pressure water side.The high pressure water sealed when seal ring 4 end is broken through end face seal lip 7 and is entered after in the first circular groove 10, and high pressure water extrudes the first seal ring 11, the first seal ring 11 is fitted with bearing shell 2 and bearing 1 simultaneously, realizes sealing effect; As high pressure water can not break through the sealing of end face seal lip 7, then due to the effect of the first circular groove 10, reduce the area of contact between seal ring 4 and bearing shell 2, thus reduce the friction between seal ring 4 and bearing shell 2, decrease the wearing and tearing of seal ring 4.
The inner ring surface of the seal ring 4 described in the utility model has the second circular groove 12, in the second described circular groove 12, the second seal ring 13 be made up of nitrile butadiene rubber and the 3rd seal ring 14 be made up of nitrile butadiene rubber are set, the longitudinal section of the second described sealing 13 circle is O type, the 3rd described overall longitudinal section of seal ring 14 is L-shaped, the face that the 3rd described seal ring 14 and bearing 1 are fitted is corrugated, and the second described seal ring 13 is arranged between the 3rd described seal ring 14 and seal ring 4.The sealing of breaking through axial seal lip 9 when high pressure water to enter in the second circular groove 12, high pressure water extrudes the second seal ring 13 and the 3rd seal ring 14, 3rd seal ring 14 and the second seal ring 13 are fitted with seal ring 4 and bearing 1 respectively, and also realize fitting between the second seal ring 13 and the 3rd seal ring 14, high pressure water is stoped to flow out along bearing 1, when high pressure water can not break through the sealing of axial seal lip 9, the face of fitting owing to having opened the second annular seal groove 12 and the 3rd seal ring 14 and bearing 1 is corrugated, therefore the surface of contact of seal ring 4 and the 3rd seal ring 14 and bearing 1 is all smaller, seal ring 4 and the friction between the 3rd seal ring 14 and bearing 1 less, the wearing and tearing of seal ring 4 and the 3rd seal ring 14 are all little.
The triple seal of the utility model associated sealing arrangement for bearings prevents high pressure water from flowing in air along bearing 1 and bearing shell 2, and owing to reducing seal ring 1 and the area of contact between bearing 1 and bearing shell 2, thus reduce the wearing and tearing of seal ring 4, because the 3rd seal ring 14 not all contacts with bearing 1 (undulatory design) everywhere, therefore, wearing and tearing are also less.
Do not do the part illustrated in the utility model, be prior art or namely can be realized by prior art, not belonging to protection domain of the present utility model.And described in the utility model, concrete case study on implementation is only better case study on implementation of the present utility model, is not used for limiting practical range of the present utility model.Namely all equivalences done according to the content of the utility model claim change and modify, all should as technology category of the present utility model.
Claims (5)
1. a bearing seal, comprise the bearing shell (2) be sleeved on bearing (1) and the bearing housing (3) be enclosed within bearing shell (2), the two ends of described bearing (1) are high pressure water and air respectively, it is characterized in that: between described bearing (1) and bearing shell (2), sealing configuration is set, described sealing configuration comprises seal ring (4), described seal ring (4) is positioned at the upper one end near high pressure water of bearing (1), described seal ring (4) has lip (5) and the first annular skewed slot (6) on the end face of the side of high pressure water, described first annular skewed slot (6) is positioned at one end place of lip (5) away from bearing (1), and form end face seal lip (7) between the first annular skewed slot (6) and lip (5), described seal ring (4) inner ring surface arranges the second annular skewed slot (8), axial seal lip (9) is formed between described second annular skewed slot (8) and lip (5).
2. bearing seal according to claim 1, it is characterized in that: described seal ring (4) outer ring surface has the first circular groove (10), in described the first circular groove (10), the first seal ring (11) is set, the longitudinal section of described the first seal ring (11) is V-shaped, and the opening of described the first seal ring (11) is towards high pressure water side.
3. bearing seal according to claim 1, it is characterized in that: the inner ring surface of described seal ring (4) has the second circular groove (12), second seal ring (13) and the 3rd seal ring (14) are set in described the second circular groove (12), the longitudinal section of described the second seal ring (13) is O type, the 3rd described seal ring (14) overall longitudinal section is L-shaped, the face that the 3rd described seal ring (14) and bearing (1) are fitted is corrugated, described the second seal ring (13) is arranged between the 3rd described seal ring (14) and seal ring (4).
4. bearing seal according to claim 2, is characterized in that: described seal ring (4) and the material of the first seal ring (11) are teflon.
5. bearing seal according to claim 3, is characterized in that: the material of described the second seal ring (13) and the 3rd seal ring (14) is nitrile butadiene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458952.8U CN204784218U (en) | 2015-06-30 | 2015-06-30 | Bearing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458952.8U CN204784218U (en) | 2015-06-30 | 2015-06-30 | Bearing seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204784218U true CN204784218U (en) | 2015-11-18 |
Family
ID=54524273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520458952.8U Withdrawn - After Issue CN204784218U (en) | 2015-06-30 | 2015-06-30 | Bearing seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204784218U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976234A (en) * | 2015-06-30 | 2015-10-14 | 国家电网公司 | Bearing seal |
| CN107166040A (en) * | 2017-05-31 | 2017-09-15 | 广州流体密封科技有限公司 | A kind of rotary shaft sealing of cylindrical self sealss |
| CN109307012A (en) * | 2017-07-28 | 2019-02-05 | 通用汽车环球科技运作有限责任公司 | Core cylinder bearing with bearing grease setting component |
-
2015
- 2015-06-30 CN CN201520458952.8U patent/CN204784218U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976234A (en) * | 2015-06-30 | 2015-10-14 | 国家电网公司 | Bearing seal |
| CN107166040A (en) * | 2017-05-31 | 2017-09-15 | 广州流体密封科技有限公司 | A kind of rotary shaft sealing of cylindrical self sealss |
| CN109307012A (en) * | 2017-07-28 | 2019-02-05 | 通用汽车环球科技运作有限责任公司 | Core cylinder bearing with bearing grease setting component |
| CN109307012B (en) * | 2017-07-28 | 2020-09-04 | 通用汽车环球科技运作有限责任公司 | Core barrel bearing with bearing grease setting member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20170711 |