CN2210974Y - Automatic-compensation v-shaped combination sealing unit - Google Patents
Automatic-compensation v-shaped combination sealing unit Download PDFInfo
- Publication number
- CN2210974Y CN2210974Y CN 95204152 CN95204152U CN2210974Y CN 2210974 Y CN2210974 Y CN 2210974Y CN 95204152 CN95204152 CN 95204152 CN 95204152 U CN95204152 U CN 95204152U CN 2210974 Y CN2210974 Y CN 2210974Y
- Authority
- CN
- China
- Prior art keywords
- seal
- self compensation
- type combination
- afterbody
- shape circle
- 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.)
- Expired - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model relates to a V-shaped combination sealing with an automatic compensation function, and comprises a V-shaped sealing ring and an O-shaped ring. The utility model is characterized in that the V-shaped sealing ring is provided with a couple of basically and mutually parallel sealing strips and a top and a tail which have similar shapes, the root of the V-shaped opening of the tail is provided with an incomplete circular cavity, and the direction of the notch of the circular cavity is the same as that of the V-shaped opening. The O-shaped ring is arranged in the circular cavity, and the inner diameter of the circular cavity is a little smaller than the outer diameter of the O-shaped ring. The utility model has the function of automatic compensation for seal and abrasion, and the utility model is not restricted by a motion mode when used.
Description
The utility model relates to a kind of V-seal device that is used for drive link or axle, particularly a kind of self compensation V-type combination seal.
V-seal of the prior art (claiming the V-type pad again) generally is to make by adding cloth rubber or polyurethane, and it is supported fixing vertically by supporting ring, and regulates degree of tightness by the pressurization of the bolt on the outer end cap.This V-seal can be organized axial series more and be used in combination, and the life-span is longer, favorable sealing property.But the frictional force of this sealing is bigger, and the sealability temperature influence is bigger, and the sealing that polyurethane is made can only used below 80 ℃, and adding the sealing that cloth rubber makes can only use below 120 ℃, and then seal leakage is serious to surpass above-mentioned limiting temperature.Therefore, this V-seal is mainly used in a drive link or a workplace that moves reciprocatingly, in the time must being used for the sealing of running shaft, also can only under slow-revving situation, use, otherwise the very fast inefficacy of sealing meeting, this makes the application of V-seal be very limited.
The purpose of this utility model is to overcome defective of the prior art, and a kind of self compensation V-type combination seal that can normally use under higher temperature is provided.It has the sealing wear self-compensating function and uses the restriction be not subjected to motion mode (back and forth or rotatablely move).
Technical solution of the present utility model is as follows: a kind of self compensation V-type combination seal, comprise-the V-seal ring and-O shape circle, it is characterized in that: described V-seal ring has a pair of sealing strip that is parallel to each other basically top and the afterbody similar with shape, the root of described afterbody V-type opening has an incomplete round chamber, the breach of this round chamber is identical with the V-type opening direction, described O shape circle is contained in this round chamber, and the internal diameter of round chamber is slightly less than the external diameter of O shape circle.The hardness of described V-seal ring is greater than the hardness of O shape circle.The width of the top top margin of described V-seal ring is approximately equal to the width of afterbody round chamber breach, and the shape approximation of top margin is the plane.The formed central angle of described V-seal ring afterbody round chamber breach is less than 180 °.Described V-seal ring is made by the filling polytetrafluoroethylene, and described O shape circle is by polyurethane or rubber material manufacturing.Described O shape circle is by the fluorine rubber manufacturing.Described O shape circle is by the nitrile butadiene rubber manufacturing.The filler of described filling polytetrafluoroethylene is molybdenum disulfide and copper powder.Be connected by a pair of hypotenuse between described top top margin and a pair of sealing strip, constitute the top side, a pair of hypotenuse of afterbody V-type opening constitutes the afterbody side.Connect by bevel edge between described sealing strip and the top side.
Self compensation V-type combination seal of the present utility model compared with prior art, except having good airproof performance, life-span is long, can be connected in series outside the advantage that common V-seal possessed such as use, also has applied widelyly, can satisfy simultaneously to-and-fro motion and the seal request that rotatablely moves.Because the V-type composite structure of its soft or hard combination is compensated sealing wear automatically.The Applicable temperature scope increases substantially simultaneously, can be 250 ℃ of following proper functioning (limiting temperature can reach 280 ℃).
Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is further described in detail.
Fig. 1 is that a plurality of sealings of the present utility model are connected in series cross-sectional view when using.
Fig. 2 is the generalized section of self compensation V-type combination seal of the present utility model;
Among the figure: V-seal ring 1; O shape circle 2; Sealing strip 3; Top margin 4; Top side 5; Afterbody side 6; Round chamber 7; Supporting ring 8(8a and 8b); Bolt 9; Transmission shaft 10; Seal groove 11, housing 12; Gland 14; Bevel edge 15.
Self compensation V-type combination seal of the present utility model is made of V-seal ring 1 and O shape circle 2, seal ring 1 is made by harder material, and as filling polytetrafluoroethylene material, O shape is enclosed then by softer relatively whippy made, as General Purpose Rubber, fluorine rubber, nitrile butadiene rubber or urethane or like materials.The shape of V-seal ring 1 is roughly similar to V-type pad of the prior art, and it comprises a pair of substantially parallel sealing strip that seals 3, a pair of top side 5, top margin 4 and a pair of afterbody side 6, as required, can chamfering between top side 5 and the sealing strip 3, form bevel edge 15.The difference of the two is, at the V-arrangement opening is that the root that afterbody side 6 intersects is provided with an incomplete round chamber 7, its barbed portion and V-arrangement opening are equidirectional, and the internal diameter outline of round chamber 7 is less than the external diameter of O shape circle 2, and making the assembly relation between O shape circle 2 and the seal ring 1 is interference fit.Like this because the elastic reaction of O shape circle 2 self on seal ring 1, makes its sealing strip 3 that the trend of expansion is arranged, automatically and seal groove 11 be adjacent to.
Above-mentioned one or more seal rings are installed in series in the seal groove 11 between housing 12 and transmission shaft 10, fixing by supporting ring 8a and 8b supporting, load onto gland 14, regulate preload pressure between supporting ring 8 and the seal ring 1 by adjusting bolt 9 on the gland 14, after work a period of time, small amount of wear may take place in the sealing strip 3 of seal ring 1, but because the elastic reaction of its inner compacted O shape circle 2 makes sealing strip 3 expand outwardly the gap of causing with compensate for wear automatically.Because good low friction and the self lubricity of polytetrafluoroethylene material self makes the frictional force of sealing part very little, because filler makes the hardness of seal ring higher, the frictional heat that rotation produces can not make the seal failure at this place simultaneously.Thereby the life-span of this combination seal is very long, and the Applicable temperature scope is wider.
Claims (10)
1, a kind of self compensation V-type combination seal, comprise a V-seal ring and O shape circle, it is characterized in that: described V-seal ring has a pair of sealing strip that is parallel to each other basically top and the afterbody similar with shape, the root of described afterbody V-type opening has an incomplete round chamber, the breach of this round chamber is identical with the V-type opening direction, described O shape circle is contained in this round chamber, and the internal diameter of round chamber is slightly less than the external diameter of O shape circle.
2, a kind of self compensation V-type combination seal as claimed in claim 1 is characterized in that: the hardness of described V-seal ring is greater than the hardness of O shape circle.
3, a kind of self compensation V-type combination seal as claimed in claim 1 or 2, it is characterized in that: the width of the top top margin of described V-seal ring is approximately equal to the width of afterbody round chamber breach, and the shape approximation of top margin is the plane.
4, a kind of self compensation V-type combination seal as claimed in claim 3 is characterized in that: the formed central angle of described V-seal ring afterbody round chamber breach is less than 180 °.
5, a kind of self compensation V-type combination seal as claimed in claim 3 is characterized in that: described V-seal ring is made by the filling polytetrafluoroethylene, and described O shape circle is by polyurethane or rubber material manufacturing.
6, a kind of self compensation V-type combination seal as claimed in claim 5 is characterized in that: described O shape circle is by the fluorine rubber manufacturing.
7, a kind of self compensation V-type combination seal as claimed in claim 5 is characterized in that: described O shape circle is by the nitrile butadiene rubber manufacturing.
8, a kind of self compensation V-type combination seal as claimed in claim 5, it is characterized in that: the filler of described filling polytetrafluoroethylene is molybdenum disulfide and copper powder.
9, a kind of self compensation V-type combination seal as claimed in claim 1 or 2 is characterized in that: be connected by a pair of hypotenuse between described top top margin and a pair of sealing strip, constitute the top side, a pair of hypotenuse of afterbody V-type opening constitutes the afterbody side.
10, as a kind of self compensation V-type combination seal as described in the claim 9, it is characterized in that: connect by bevel edge between described sealing strip and the top side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204152 CN2210974Y (en) | 1995-03-07 | 1995-03-07 | Automatic-compensation v-shaped combination sealing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204152 CN2210974Y (en) | 1995-03-07 | 1995-03-07 | Automatic-compensation v-shaped combination sealing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210974Y true CN2210974Y (en) | 1995-10-25 |
Family
ID=33856745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95204152 Expired - Fee Related CN2210974Y (en) | 1995-03-07 | 1995-03-07 | Automatic-compensation v-shaped combination sealing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210974Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097882A (en) * | 2010-12-15 | 2011-06-15 | 新疆金风科技股份有限公司 | Sealing element, sealing method and wind-driven generator |
| CN104043295A (en) * | 2009-10-14 | 2014-09-17 | 唐纳森公司 | Filter cartridge with seal member and method |
| CN105909816A (en) * | 2016-05-05 | 2016-08-31 | 中国航天科技集团公司烽火机械厂 | High-pressure-difference and low-noise V-shaped ball flow automatic adjusting valve |
| CN108799498A (en) * | 2017-04-28 | 2018-11-13 | 凯氟隆（厦门）密封件有限公司 | A kind of Novel down-hole tool combinations encapsulation scheme |
-
1995
- 1995-03-07 CN CN 95204152 patent/CN2210974Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043295A (en) * | 2009-10-14 | 2014-09-17 | 唐纳森公司 | Filter cartridge with seal member and method |
| CN104043295B (en) * | 2009-10-14 | 2016-03-16 | 唐纳森公司 | There is filter element and the method for seal |
| CN102097882A (en) * | 2010-12-15 | 2011-06-15 | 新疆金风科技股份有限公司 | Sealing element, sealing method and wind-driven generator |
| CN105909816A (en) * | 2016-05-05 | 2016-08-31 | 中国航天科技集团公司烽火机械厂 | High-pressure-difference and low-noise V-shaped ball flow automatic adjusting valve |
| CN108799498A (en) * | 2017-04-28 | 2018-11-13 | 凯氟隆（厦门）密封件有限公司 | A kind of Novel down-hole tool combinations encapsulation scheme |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |