CN204114112U - Y-type seal ring - Google Patents
Y-type seal ring Download PDFInfo
- Publication number
- CN204114112U CN204114112U CN201420430946.7U CN201420430946U CN204114112U CN 204114112 U CN204114112 U CN 204114112U CN 201420430946 U CN201420430946 U CN 201420430946U CN 204114112 U CN204114112 U CN 204114112U
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- lip
- static
- motive sealing
- seal ring
- type seal
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Abstract
The utility model discloses a kind of y-type seal ring, comprise static lip and motive sealing lip, the top of static lip and motive sealing lip is connected, V-type opening is down formed on the bottom of static lip and motive sealing lip, it is characterized in that: the width of described static lip is greater than the width of motive sealing lip, the outside of static lip is provided with at least one first secondary lip, and the inner side of described motive sealing lip is provided with two the second secondary lips, and the cross section of this first secondary lip and the second secondary lip is semicircular arc.The utility model y-type seal ring arranges the first secondary lip on static lip, and static lip and valve gap inwall can be made closely more to fit, and is conducive to preventing y-type seal ring from occurring loosening phenomenon; Motive sealing lip arranges two the second secondary lips, can guarantee that motive sealing lip keeps fitting tightly with valve rod outer wall all the time in the rotary movement of valve rod, and then reach splendid leakproof object.
Description
Technical field
The utility model relates to valve sealing ring technical field, particularly relate to one be applied to low speed, low pressure (0.6,1.0,1.6,3.2,6.4MPa), rotate and to-and-fro motion in y-type seal ring.
Background technique
General y-type seal ring, also known as radial lip seal circle, the compression face of seal ring is lip-like, makes antelabium and the abundant Interference contact of sealing surface produce seal action, and its sealing contact position is wedge angle.
The background technique quoted is applicable to senior middle school's pressure, reciprocating hydraulic cylinder lip-type packing technology.Lip-type packing is a kind of seal ring with self sealing action, and it relies on lip to be close to sealing male part surface, blocks leakage and obtains sealing effect.The working pressure of lip-type packing is pre-pressing force and hydrodynamic pressure sum, and when sealed medium pressure increase, lip doubly struts, and closely fit with sealing surface, sealing strengthens further; In addition, lip limit cutting edge also has the effect of frizing, more enhances the sealability of seal ring.
General Y-shaped ring is unidirectional working, and groove processing precision is higher.The lip limit that y-shaped ring relies on it to open is affixed on sealing pair coupled face.During without interior pressure, only produce very little contact because of the distortion of procheilon.Now, sealability is very poor.
When sealing, the every bit contacted all there is the normal pressure equal with pressure medium, so axial compression will be subject to bottom lip circle with sealing medium, lip is subject to circumference compression, contact with sealing surface and broaden, contact stress increases simultaneously, low pressure seal poor performance.When interior pressure raises again, distribution form and the size of contact change further, and lip coordinates tightr with sealing surface, so better tightness, and " self sealing action " of Here it is Y shape circle.Due to this self-tightening, a Y shape circle effectively can seal the high pressure of 32MPa.
The effective sealing pressure that pressure type of energizing seals equals precompression and hydrodynamic pressure sum.Y-shaped ring by the effect on lip limit by hydrodynamic pressure useful effect in sealing, its precompression can drop to small value, and hydrodynamic pressure is higher, and the effectiveness of precompression is less, and in high pressure occasion, the effect of precompression is negligible.At this moment it is favourable for reducing seal friction power, because seal friction power is directly proportional to seal contact pressure.So y-shaped ring is while guarantee sealing, frictional force is less than extrusion pressing type sealing.
And y-shaped ring is mainly used in reciprocation sealing, from its working principle, when Y shape circle is installed, lip will face toward the high side of pressure, and competence exertion effect, so y-shaped ring can only unidirectionally work.
When coupling part does relative movement with operating rate, between sealing lip and slip plane, form one deck sealing oil film, the existence of oil film can improve the friction condition of seal ring, reduces wearing and tearing; Oil film seals in pneumostop.In the to-and-fro motion of hydraulic element, it is different that movement parts is stretched out from oil slick thickness during indentation, and the party of this oil slick thickness difference-product causes leakage.So when Y shape circle normally works, also have minute quantity to leak and occur, when reciprocating speed is large, leakage rate is large.This is because when reciprocating speed is large, reciprocal time becomes very frequent, and the fluid dynamic effect of oil film simultaneously makes oil slick thickness increase, and defines the rapid accumulation effect of oil film.When the oil viscosity that works increases, therefore oil slick thickness increases, and the leakage rate that reciprocating speed causes also increases.But because hydraulic pressure oil viscosity reduces along with the rising of temperature, so when hydraulic equipment starts at low temperatures, leakage when motion starts is comparatively large, along with in movement process because various loss causes temperature to raise, leakage rate can reduce gradually.
But be applied to the valve of aqueous medium, because the ratio of viscosities oil of water is much lower, be very easy to leak.The lip of general Y-shaped ring is wedge angle, inapplicable in valve low speed rotation and reciprocating sealing.
The leakage situation of piston in back and forth being formed of oil hydraulic cylinder is different.When interior pressure is lower, the leakage rate of extracting out in stroke increases with interior pressure and increases; Increase with interior pressure in press-in stroke and reduce.When interior pressure is enough large (being about greater than 7.5MPa), leaks and no longer change with interior pressure.
When pressing lower in general y-shaped ring, frictional force increases with interior pressure and increases.When interior pressure is enough large, frictional force no longer includes great changes.As good in lubricated, even there is downward trend.
Therefore, existing y-type seal ring exists following not enough: 1, easily occur leakage problems when sealing medium viscosity is low and pressure is low; 2, phenomenon when general common y-type seal ring is not suitable for rotary movement seal and makes device easily occur seepage; 3, in hyperbaric environment, general y-type seal ring only treats that temperature is elevated to a timing, sealing effect just can be made to promote and reach the non-leakage shortcoming of sealing; 4, general y-type seal ring is low for working life.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is the y-type seal ring providing a kind of leak resistance splendid, and it has the sealing effect of enhancing in low speed, low pressure, rotation and reciprocating situation.
For achieving the above object, the utility model adopts following technological scheme:
Y-type seal ring, comprise static lip and motive sealing lip, the top of static lip and motive sealing lip is connected, V-type opening is down formed on the bottom of static lip and motive sealing lip, the width of described static lip is greater than the width of motive sealing lip, the outside of static lip is provided with at least one first secondary lip, and the inner side of described motive sealing lip is provided with two the second secondary lips, and the cross section of this first secondary lip and the second secondary lip is semicircular arc.
Further, the outside of described static lip is provided with two the first secondary lips, and these two the first secondary lips lay respectively at top and the bottom of static lip; Described two the second secondary lips lay respectively at top and the bottom of motive sealing lip, and the section radius of this second secondary lip be positioned at bottom motive sealing lip is greater than the section radius of the second secondary lip being positioned at motive sealing lip top.
Further, the first secondary lip being positioned at static lip top described in and the second secondary lip being positioned at motive sealing lip top are on same horizontal plane.
Further, the lip cross section of described static lip is circular arc.
As mentioned above, the utility model y-type seal ring arranges the first secondary lip on static lip, and static lip and valve gap inwall can be made closely more to fit, and is conducive to preventing y-type seal ring from occurring loosening phenomenon; Motive sealing lip arranges two the second secondary lips, can guarantee that motive sealing lip keeps fitting tightly with valve rod outer wall all the time in the movement process of valve rod, and then reach splendid leakproof object.
Accompanying drawing explanation
Fig. 1 is the stereogram of the utility model y-type seal ring;
Fig. 2 is the sectional drawing of the utility model y-type seal ring;
Fig. 3 is the schematic diagram that the utility model y-type seal ring matches with valve;
Fig. 4 is the assembling schematic diagram of the another kind of embodiment of the utility model y-type seal ring.
Wherein: 100, y-type seal ring; 1, static lip; 11, the first secondary lip; 2, motive sealing lip; 21, the second secondary lip; 3, V-type opening; 5, valve rod; 6, valve gap; 7, accommodating groove; 71, accepting groove.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
Refer to Fig. 1 and Fig. 2, the utility model provides a kind of y-type seal ring 100, it can be applicable in these type of rotating sealing device such as fire hydrant, gate valve, butterfly valve, ball valve and stop valve, or be applied in these type of reciprocating motion sealing devices such as Twoway valves, three-way valve, hydraulic control valve, control valve for water pump and soil discharging valve, or be applied to have to-and-fro motion and low-speed rotation concurrently seal arrangement in.
General, above-mentioned seal arrangement is provided with a valve, and valve comprises valve rod 5 and valve gap 6, and this y-type seal ring 100 is arranged between valve rod 5 and valve gap 6.This y-type seal ring 100 comprises static lip 1 and motive sealing lip 2, and static lip 1 is positioned at the outside of motive sealing lip 2, and after assembling, static lip 1 coordinates with valve gap 6 static seal, and motive sealing lip 2 coordinates with the outer surface motive sealing of valve rod 5; The top of static lip 1 and motive sealing lip 2 is connected, V-type opening 3 is down formed on the bottom of static lip 1 and motive sealing lip 2, the width of described static lip 1 is greater than the width of motive sealing lip 2, valve rod 5 is when reciprocating, motive sealing lip 2 also ensues movement, and the design that the width of static lip 1 is greater than the width of motive sealing lip 2 can occur flop phenomenon by anti-stopping seal lip 2 when mobile, thus be conducive to the leak resistance improving this y-type seal ring; The outside of static lip 1 is provided with at least one first secondary lip 11, the inner side of described motive sealing lip 2 is provided with two the second secondary lips 21, the cross section of this first secondary lip 11 and the second secondary lip 21 is semicircular arc, because of y-type seal ring 100 is be made up of elastic material, therefore can there is elastic strain in it in the process of assembling and work, and the Cross section Design of this semicircular arc can strengthen described first secondary lip 11 and valve gap 6 inwall, surface of contact between the second secondary lip 21 and valve rod 5 outer wall, the effect strengthening leak resistance can be played.
Refer to Fig. 3, during assembling, this y-type seal ring 100 is accommodated in the accommodating groove 7 that formed between valve gap 6 and valve rod 5, the motive sealing lip 2 of y-type seal ring 100 is connected with the motive sealing of valve rod 5 outer wall, the static lip 1 of y-type seal ring 100 coordinates with valve gap 6 inwall interference extrusion, and whole y-type seal ring is in forces oppression state (as shown in Figure 3); Wherein, described first secondary lip 11 can make up the space owing to bringing because shape misfits between static lip 1 and valve gap 6 inwall, increase the axial friction between the first secondary lip 11 and valve gap 6, thus static lip 1 and valve gap 6 can be made closely to fit, guarantee that static lip 1 remains the state being close to valve gap 6 inwall, prevent y-type seal ring 100 from occurring loosening phenomenon; In addition, the setting of this first secondary lip 11 also can reduce the processing precise degree to valve gap 6 inwall, thus is conducive to cutting down finished cost; Under the extruding of hydraulic pressure, described motive sealing lip 2 offsets to the right, and then the second secondary lip 21 is fitted with valve rod 5 intimate, can play the effect strengthening sealing between motive sealing lip 2 and valve rod 5 outer wall; Valve rod 5 is in movement process, and motive sealing lip 2 also floats along with the motion of valve rod 5, offsets, and plays just because of the setting of the second secondary lip 21 effect preventing from leaking; Especially, when low hydraulic pressure, the dynamics of current extruding motive sealing lip 2 is not enough, cause motive sealing lip and valve rod 5 outer wall adhesive force inadequate, therefore traditional seal ring usually leaks, and the second secondary lip 21 be positioned at bottom motive sealing lip 2 that the utility model is set up just in time can make up this deficiency, guarantee motive sealing lip 2 and the adhesive force of valve rod 5 outer wall, reach the object preventing from leaking.
Please continue and consult Fig. 2 and Fig. 3, preferably, the outside of described static lip 1 is provided with two the first secondary lips 11, these two the first secondary lips 11 lay respectively at top and the bottom of static lip 1, these two the first secondary lips 11 play multi-step pressure reduction and buffer function, greatly can increase the frictional force between static lip 1 and valve gap 6 inwall, prevent from occurring relative sliding between static lip 1 and valve gap 6, thus occur water leakage phenomenon.Described two the second secondary lips 21 lay respectively at top and the bottom of motive sealing lip 2, when low by the quality of fit of seal-moving pair, the valve rod 5 of motion is when crooked, this y-type seal ring is just equivalent to an elastomer diaphragm, the lip limit of motive sealing lip 2 bottom can hold valve rod 5 tightly all the time, valve rod 5 is allowed to swing certain angle, under the pressure effect of precompression and valve internal, there is good sealing effect, thus reduce by the quality of fit of seal-moving pair, and then reach and reduce costs, improve the up-to-standard rate of product and the object in working life.When gasket set is at high pressure, utilize the pressure of valve internal, realize self-pressure-sealed, pressure more high sealing must be tighter.Second secondary lip 21 of semicircular arc, is not only applicable to the occasion of rotary movement seal but also is applicable to to-and-fro motion.The lip cross section of static lip 1 is circular arc, and after the wearing and tearing of sealing lip limit, because of the effect of pressure medium, lip limit has certain auto-compensation ability, and this design can extend the working life of y-type seal ring.
Consider that the second secondary lip 21 deformation when different hydraulic pressure be positioned at bottom motive sealing lip 2 is floated large, the section radius that this can be positioned at the second secondary lip 21 bottom motive sealing lip 2 is set to be greater than the section radius of the second secondary lip 21 being positioned at motive sealing lip 2 top; Described the first secondary lip 11 being positioned at static lip 1 top is on same horizontal plane with the second secondary lip 21 being positioned at motive sealing lip 2 top, this two secondary lip can arrive the effect of an approximate O RunddichtringO, increase the precompression between this y-type seal ring and valve gap 6, strengthen the sealing between this y-type seal ring and valve gap 6 further.
Refer to Fig. 4, in addition, above-described embodiment is only enumerated static lip 1 to be positioned at situation outside motive sealing lip 2, in some valves, this y-type seal ring be installed in be opened in valve rod 5 outer wall accepting groove 71 in, now, the static lip 1 of this y-type seal ring is just in time contrary with above-described embodiment with motive sealing lip 2 position, namely static lip 1 is in the inner side (as shown in Figure 4) of motive sealing lip 2, and further feature still keeps consistent with a upper embodiment, now, the inner side of this y-type seal ring with valve rod 5 for static seal coordinates, the outside of y-type seal ring coordinates with valve gap 6 motive sealing, easily known by the description in above-described embodiment, this static lip 1 y-type seal ring be arranged in inside motive sealing lip 2 has the function same with above-described embodiment and effect.
As mentioned above, the utility model y-type seal ring 100 arranges the first secondary lip 11 on static lip 1, and static lip 1 and valve gap 6 inwall can be made closely more to fit, and is conducive to preventing y-type seal ring 100 from occurring loosening phenomenon; Motive sealing lip 2 arranges two the second secondary lips 21, can guarantee that motive sealing lip 2 keeps fitting tightly with valve rod 5 outer wall all the time in the movement process of valve rod 5, and then reach splendid leakproof object.
To one skilled in the art, according to technological scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (4)
1.Y RunddichtringO, comprise static lip and motive sealing lip, the top of static lip and motive sealing lip is connected, V-type opening is down formed on the bottom of static lip and motive sealing lip, it is characterized in that: the width of described static lip is greater than the width of motive sealing lip, the outside of static lip is provided with at least one first secondary lip, and the inner side of described motive sealing lip is provided with two the second secondary lips, and the cross section of this first secondary lip and the second secondary lip is semicircular arc.
2. y-type seal ring as claimed in claim 1, is characterized in that: the outside of described static lip is provided with two the first secondary lips, and these two the first secondary lips lay respectively at top and the bottom of static lip; Described two the second secondary lips lay respectively at top and the bottom of motive sealing lip, and the section radius of this second secondary lip be positioned at bottom motive sealing lip is greater than the section radius of the second secondary lip being positioned at motive sealing lip top.
3. y-type seal ring as claimed in claim 2, is characterized in that: described in be positioned at static lip top the first secondary lip and the second secondary lip of being positioned at motive sealing lip top be on same horizontal plane.
4. y-type seal ring as claimed in claim 1, is characterized in that: the lip cross section of described static lip is circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430946.7U CN204114112U (en) | 2014-07-31 | 2014-07-31 | Y-type seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430946.7U CN204114112U (en) | 2014-07-31 | 2014-07-31 | Y-type seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114112U true CN204114112U (en) | 2015-01-21 |
Family
ID=52331425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420430946.7U Expired - Fee Related CN204114112U (en) | 2014-07-31 | 2014-07-31 | Y-type seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114112U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154232A (en) * | 2014-07-31 | 2014-11-19 | 广东永泉阀门科技有限公司 | Y-shaped sealing ring |
| CN105491273A (en) * | 2015-12-25 | 2016-04-13 | 生迪智慧科技有限公司 | Camera waterproof assembly and LED illumination device |
| TWI677638B (en) * | 2018-09-04 | 2019-11-21 | 和正豐科技股份有限公司 | Fluoroplastic butterfly valve structure |
| US11384838B2 (en) | 2016-09-09 | 2022-07-12 | Applied Materials, Inc. | Seal member |
| US11820559B2 (en) | 2021-10-15 | 2023-11-21 | Blackberry Limited | Waterproof container |
-
2014
- 2014-07-31 CN CN201420430946.7U patent/CN204114112U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154232A (en) * | 2014-07-31 | 2014-11-19 | 广东永泉阀门科技有限公司 | Y-shaped sealing ring |
| CN105491273A (en) * | 2015-12-25 | 2016-04-13 | 生迪智慧科技有限公司 | Camera waterproof assembly and LED illumination device |
| US11384838B2 (en) | 2016-09-09 | 2022-07-12 | Applied Materials, Inc. | Seal member |
| TWI677638B (en) * | 2018-09-04 | 2019-11-21 | 和正豐科技股份有限公司 | Fluoroplastic butterfly valve structure |
| US11820559B2 (en) | 2021-10-15 | 2023-11-21 | Blackberry Limited | Waterproof container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING YONGQUAN TENGDA VALVE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: GUANGDONG YONGQUAN VALVE TECHNOLOGY CO., LTD. Effective date: 20150529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 528200 FOSHAN, GUANGDONG PROVINCE TO: 100055 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150529 Address after: 100055 Beijing city Xicheng District Guang'an South Binhe Road No. 31 (Hua Heng Building Room 701) Patentee after: BEIJING YONGQUAN TENGDA VALVE TECHNOLOGY Co.,Ltd. Address before: 528200 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee before: GUANGDONG YONGQUAN VALVE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200615 Address after: 528200 Guangdong Province Nanhai District of Foshan City, Jiujiang Longgao Road No. 1 East Mei Patentee after: GUANGDONG YONGQUAN VALVE TECHNOLOGY Co.,Ltd. Address before: 100055 Beijing city Xicheng District Guang'an South Binhe Road No. 31 (Hua Heng Building Room 701) Patentee before: BEIJING YONGQUAN TENGDA VALVE TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |