CN201007351Y - Lip sealing structure - Google Patents
Lip sealing structure Download PDFInfo
- Publication number
- CN201007351Y CN201007351Y CNU2006200494958U CN200620049495U CN201007351Y CN 201007351 Y CN201007351 Y CN 201007351Y CN U2006200494958 U CNU2006200494958 U CN U2006200494958U CN 200620049495 U CN200620049495 U CN 200620049495U CN 201007351 Y CN201007351 Y CN 201007351Y
- Authority
- CN
- China
- Prior art keywords
- straight section
- circular arc
- housing straight
- arc part
- center
- 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 - Lifetime
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model relates to a labiate sealing structure, comprising a first, a second and a third outline border straight side sections, wherein the length of the first outline border straight side section is smaller than the groove width of 0.5 to 0.7mm, and the sizes between the second outline border straight side section and the groove width keep the gap cooperation of about 0.2mm; a central arc portion, which is connected by a first arc portion, a central perforated arc portion and a second arc portion, wherein the distances from a main center of circle of the central perforated arc portion to the first outline border straight side section and the second outline border straight side section are separately 0.5 to 0.7 times of the lengths of the second outline border straight side section and the first outline border straight side section, and the radius of the perforated arc portion is about half of the longer one between the first and the second outline border straight side sections; and the first arc portion, wherein the horizontal distance from a first center of circle of the first arc portion to the main center of circle is 1.1 to 1.3 times of the first outline border straight side section. The utility model has better sealing effect to the occasion that the range of the bearing pressure is larger and the fluctuation of the pressure is greater under the plane sealing environment.
Description
Technical field
The utility model relates to an a kind of vitals of lock ring type quick operating valve, specifically is a kind of lip rubber seal circle of lock ring type quick operating valve, is used for the occasion of fast-opening blind or similar sealed environment.
Background technique
Traditional seal form is forced seal.This sealing means is to rely on the active force of link to push by force fully to make it sealing.As: packing ring, the sealing of O type etc.In this type of sealing, the active force of link not only will overcome the axial force that the medium working pressure produces, and also will make the surface of seal element keep certain contact pressure just can reach sealing.Generally speaking, the pretightening force of link is about 1.1～1.6 times of axial force.The O RunddichtringO that a kind of clamp band type fast-opening blind commonly used is at present adopted is as indicating among Fig. 1 shown in 1, this is a kind of typical forced seal, by clip 13 hub 12 and door closure 11 are realized sealing, and for guaranteeing sealing effect, its sealing pretightening force must be greatly greater than axial force, part greater than axial force is equivalent to increase an additional force and moment to link and end cap, this additional force and moment will produce additional stress, thereby the method for size that must be by increasing end cap and flange controls this additional stress, guarantees product safety.And along with improving constantly of pressure medium, the sealing of this structural type can't be satisfied down always.
Summary of the invention
For a change this situation in lock ring type fast-opening blind product of the present utility model, has adopted the structural type of lip seal, and this is a kind of self-tightening sealing structure that is different from above-mentioned forced seal form fully.Main container or the interior pressure medium of pipeline of relying on compresses Sealing, makes sealing surface reach sealing, thereby do not need to add the sealing pretightening force.
In order to realize the foregoing invention purpose, the technical solution adopted in the utility model is that lip seal configuration is characterized in that, comprising: the first housing straight section, substantially horizontal setting; Second and third housing straight section, perpendicular to the two ends of the described first housing straight section, wherein the other end of the 3rd housing straight section links to each other with three-arc portion respectively; Wherein the first housing straight section length is less than 0.5～0.7mm of groove width, described second housing straight section and groove width chi between keep Spielpassung about 0.2mm; The center curved portions, connect to form by first circular arc part, center drilling circular arc part and second circular arc part, wherein, the main distance of center circle first housing straight section of described center drilling circular arc part, the distance of the second housing straight section are respectively the described second housing straight section, the first housing straight section length 0.5～0.7 times, and the radius of this perforate circular arc part is about half that grow in first, second housing straight section; First circular arc part, the lateral separation of its first distance of center circle from the main center of circle are 1.1～1.3 times of the first housing straight section, and the fore-and-aft distance in itself and the main center of circle is 0.4～0.6 times of the second housing straight section, and the circumference of this first circular arc part and described center drilling is circumscribed; Second circular arc part, the fore-and-aft distance of its second distance of center circle from the main center of circle be the second housing straight section 0.8-1.0 doubly, the lateral separation in itself and the main center of circle is 0.7～0.8 times of the first housing straight section, the circumference of this second circular arc part and described center drilling is circumscribed; Three-arc portion, its 3rd distance of center circle is 0.25～0.35 times of the second housing straight section length from the fore-and-aft distance of the first housing straight section, this three-arc portion radius is about 0.8～0.9 times of the first housing straight section, and tangent with described the 3rd housing straight section; The 4th circular arc part, its the 4th distance of center circle is 0.15～0.2 times of the first housing straight section length from the lateral separation of the second housing straight section, the 4th circular arc part radius is about 0.6～0.7 times of the second housing straight section, and with the described second housing straight section round-corner transition.
The lip packing of said structure can be applicable to that all kinds of gas pressure vessel fast-opening blind equitemperatures, pressure surge are big, the striding out on the linkage structure of no kingbolt pretension.Its inner chamber arc design makes pressure distribution even, helps the extension performance demands of rubber material own, prolongs seal durability.The utility model lip rubber seal coil structures is simple, easily manufactured, safe and reliable.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.
Fig. 1 is the stressed schematic representation of conventional seals structure;
Fig. 2 is a sealing configuration of the present utility model;
Fig. 3 is the A-A ' sectional view of Fig. 2;
The stressed schematic representation that Fig. 4 uses for the utility model.
Embodiment
See also shown in Figure 2ly, the indent that lip rubber seal circle 10 of the present utility model is different from traditional O RunddichtringO is the O shape, and further structure sees also Fig. 3, seal ring of the present utility model be square-outside and round-inside, outer real in empty structure.Wherein, two vertical housing straight sections 104 and 105 lay respectively at the two ends of the housing straight section 103 of substantially horizontal, and wherein housing straight section 103,104 is of a size of A, B, and this size is determined according to the size of seal groove on the employed door closure.Wherein, size A is slightly less than corresponding groove width 0.5～0.7mm, keeps the Spielpassung about 0.2mm between size B and the corresponding groove width size.The outer side 101,102 of both sides lip stretches out with housing straight section 104 and housing straight section 105 respectively after by two circular arc R 3, the transition of R4 straight flange, and its bearing of trend is consistent with the MEDIA FLOW Inbound, and overall dimensions C, the D of the lip-type packing 10 after the extension is about corresponding housing straight section 103,104 size A, B 1.1～1.2 times.
Simultaneously for reaching the ideal effect of self-tightening sealing, with the structure of sealing circle 10 indoor design camber hollow outs, so that entire contact surface can be evenly stressed when medium is inserted.The arcuate segment of center drilling is made of three sections mutual tangent circular arcs, center circle arc dia R is about half of the long length of seal ring 10 housing straight sections, its center of arc is about 0.5～0.7 times of corresponding straight flange segment length to distance A 1, the B1 of seal ring straight section 104,103, to guarantee certain support strength.In addition two sections circular arc R 1, R2 are circumscribed and stretch out with circular arc R respectively, finally are intersected in the lip extension edge, and leave respectively and hand over limit thickness a, the about 0.5～0.7mm of b, prolong a mouthful quality when guaranteeing the seal ring demoulding.
The following describes two ends and extend the situation of lip 101,102.102 lips are by circular arc R 1, R3 and hand over limit a to form, and 101 lips are by circular arc R 2, R4 and hand over limit b to form.
The formation of circular arc R 1 and circular arc R 2---the former distance of center circle between the center of circle of circular arc R laterally and fore-and-aft distance be about straight section length A, B 1.1～1.3 times and 0.4～0.6 times of corresponding direction respectively; The latter's distance of center circle between the center of circle of circular arc R laterally and fore-and-aft distance be about straight section length A, B 0.7～0.8 times and 0.8～1.0 times of corresponding direction respectively.These two sections circular arcs are mutually circumscribed with circular arc R respectively.
The formation of circular arc R 3 and circular arc R 4---the perpendicular distance of the former distance of center circle 103 straight sections is about 0.25～0.35 times of 104 straight section length B, and this circular arc and 105 straight sections are tangent; The perpendicular distance of the latter's distance of center circle 104 straight sections is about 0.15～0.20 times of 103 straight section length A, and this circular arc and 103 straight sections are tangent with knuckle (get and be decided to be R1) respectively.
Figure 4 and 5 are the use schematic representation of lip-type packing 10 of the present utility model.Lip-type packing 10 among Fig. 4 is embedded in door closure 11, and is by link such as clip etc. that hub 12 and door closure 11 is fastening.Specifically, an end lip limit 102 that contacts with hub 12 owing to seal ring 10 during assembling is overhanging, thereby guaranteed decrement (be about seal ring 10 housing straight section size A 10%～15%) under the pre-sealed state, this decrement greatly greater than the matching gap between door closure 11 and the hub 12 (0.3～0.55mm), guarantee the sealing effect under the initial low pressure state; When charging into medium, pressure also raises gradually, the arc-shaped cavity internal pressure of seal ring 10 also increases, and circumferentially evenly pressurization of formation, each segmental arc is under the effect of the pressure medium of filling, and the arc radius strengthens, thereby makes lip limit, both sides 101,102 segmental arcs be close to separately contact plane, increase the area of contact between seal ring 10 and sealing plane, reach self-tightening sealing.
When door closure 11 was closed, lip-type packing 10 was subjected to elastic compression, even a small amount of surrender, and axial two lip circular arcs contact with hub 12 sealing planes and reach initial sealing.During work, lip-type packing 10 resilience is on the one hand opened, and radially or axially opens under the effect of pressure medium on the other hand, makes two circular arcs on lip limit 101,102 outwards bloat extension, and the contacting point still compresses, thereby reaches self-tightening sealing.The pressure of medium is big more, and the effect of sealing will be good more.This obviously sealing means has tangible advantage, and pretightening force is little, and the axial force that the suffered total load of load spare equals or a little higher than medium causes gets final product, so the size of hub 12, door closure 11 can be less as far as possible.
The present invention needs bearing pressure scope occasion big, that pressure surge is bigger that the better seal effect is all arranged under the plane sealing environment.
More than all embodiments only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technological schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.
Claims (5)
1. lip seal configuration is characterized in that, comprising:
The first housing straight section, the substantially horizontal setting;
Second and third housing straight section, perpendicular to the two ends of the described first housing straight section, wherein the other end of the 3rd housing straight section links to each other with three-arc portion respectively;
Wherein the first housing straight section length keeps the Spielpassung about 0.2mm less than 0.5～0.7mm of groove width between described second housing straight section and the groove width size;
The center curved portions is connected to form by first circular arc part, center drilling circular arc part and second circular arc part, wherein,
The main distance of center circle first housing straight section of described center drilling circular arc part, the distance of the second housing straight section are respectively the described second housing straight section, the first housing straight section length 0.5～0.7 times, and the radius of this perforate circular arc part is about half that grow in first, second housing straight section;
First circular arc part, the lateral separation of its first distance of center circle from the main center of circle are 1.1～1.3 times of the first housing straight section, and the fore-and-aft distance in itself and the main center of circle is 0.4～0.6 times of the second housing straight section, and the circumference of this first circular arc part and described center drilling is circumscribed;
Second circular arc part, the fore-and-aft distance of its second distance of center circle from the main center of circle be the second housing straight section 0.8-1.0 doubly, the lateral separation in itself and the main center of circle is 0.7～0.8 times of the first housing straight section, the circumference of this second circular arc part and described center drilling is circumscribed;
Three-arc portion, its 3rd distance of center circle is 0.25～0.35 times of the second housing straight section length from the fore-and-aft distance of the first housing straight section, this three-arc portion radius is about 0.8～0.9 times of the first housing straight section, and tangent with described the 3rd housing straight section;
The 4th circular arc part, its the 4th distance of center circle is 0.15～0.2 times of the first housing straight section length from the lateral separation of the second housing straight section, the 4th circular arc part radius is about 0.6～0.7 times of the second housing straight section, and with the described second housing straight section round-corner transition.
2. lip seal configuration according to claim 1 is characterized in that,
Described first and second circular arc part is circumscribed and stretch out with the center circular arc part respectively, finally is intersected in first, second respectively and extends lip.
3. lip seal configuration according to claim 2 is characterized in that, described sealing configuration further comprises:
First hands over the limit, forms first with described first circular arc part, three-arc portion and extends lip;
Second hands over the limit, forms second with described second circular arc part, the 4th circular arc part and extends lip.
4. lip seal configuration according to claim 3 is characterized in that,
Described first, second handed over the about 0.5～0.7mm of limit thickness.
5. according to claim 1 or 2 or 3 or 4 described lip seal configuration, it is characterized in that,
Described sealing configuration is made with fluorine rubber or nitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200494958U CN201007351Y (en) | 2006-12-26 | 2006-12-26 | Lip sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200494958U CN201007351Y (en) | 2006-12-26 | 2006-12-26 | Lip sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007351Y true CN201007351Y (en) | 2008-01-16 |
Family
ID=39003298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200494958U Expired - Lifetime CN201007351Y (en) | 2006-12-26 | 2006-12-26 | Lip sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201007351Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696515A (en) * | 2015-02-02 | 2015-06-10 | 柳州市同进汽车零部件制造有限公司 | Sealing piece of electronic injection pump |
| CN105318005A (en) * | 2015-03-15 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Special-shaped sealing component and sealing method thereof |
| CN108417418A (en) * | 2018-05-09 | 2018-08-17 | 浙江工贸职业技术学院 | A kind of electric switch dynamic sealing device |
| CN112133464A (en) * | 2020-08-26 | 2020-12-25 | 中国原子能科学研究院 | Middle-low radioactivity double-cover sealing ring and waste barrel using same |
-
2006
- 2006-12-26 CN CNU2006200494958U patent/CN201007351Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696515A (en) * | 2015-02-02 | 2015-06-10 | 柳州市同进汽车零部件制造有限公司 | Sealing piece of electronic injection pump |
| CN105318005A (en) * | 2015-03-15 | 2016-02-10 | 洛阳辰祥机械科技有限公司 | Special-shaped sealing component and sealing method thereof |
| CN108417418A (en) * | 2018-05-09 | 2018-08-17 | 浙江工贸职业技术学院 | A kind of electric switch dynamic sealing device |
| CN112133464A (en) * | 2020-08-26 | 2020-12-25 | 中国原子能科学研究院 | Middle-low radioactivity double-cover sealing ring and waste barrel using same |
| CN112133464B (en) * | 2020-08-26 | 2024-02-20 | 中国原子能科学研究院 | Medium-low radioactivity double-cover sealing ring and waste barrel using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101814559B1 (en) | Self-sealing butterfly valve | |
| CN201007351Y (en) | Lip sealing structure | |
| CN101725738A (en) | Fluid pressure equipment provided with low sliding packing | |
| CN213117571U (en) | Hard sealing fixed ball valve | |
| CN2814034Y (en) | C type ring sealing spacer | |
| CN211474894U (en) | Butterfly valve with good sealing performance | |
| CN212106965U (en) | Special butterfly valve for corrosive liquid | |
| CN205504281U (en) | High pressure resistant self sealss whirl compensator | |
| CN109667953B (en) | anti-leakage ball valve | |
| CN202646681U (en) | Sealing ring and screw compressor with same | |
| CN201145047Y (en) | Bias T-shaped large caliber butterfly valve rubber seal ring | |
| CN102695901A (en) | Valve and sealing ring | |
| CN208474528U (en) | A kind of butterfly valve seat | |
| CN206958278U (en) | It is a kind of to improve valve plate and the butterfly valve of sealing structure | |
| CN105545724B (en) | A kind of valve block of stabilized pressure pump, water squeezing plate and stabilized pressure pump | |
| CN205350426U (en) | Floating ball valve | |
| CN202580105U (en) | Sealing structure for hard sealed floating ball valve | |
| CN208816728U (en) | A kind of eccentric ball valve | |
| CN203979567U (en) | A kind of monomer ball valve | |
| CN218377786U (en) | Ball valve disk seat seal structure | |
| CN218118680U (en) | Anti-leakage sealing combined mechanism | |
| CN209041557U (en) | A kind of oil sealing of hydraulic pump | |
| CN102996809A (en) | Y-type sealing ring | |
| CN215258148U (en) | High-pressure valve for hydrogen medium | |
| CN216812829U (en) | High-pressure sealing ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI AEROSPACE ENERGY CO., LTD. Free format text: FORMER NAME: SHANGHAI HANGTIAN ENERGY SOURCE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201201 Pudong New Area East Road, No. 4493, Shanghai Patentee after: Shanghai Aerospace Energy Co., Ltd. Address before: 201201 Pudong New Area East Road, No. 4493, Shanghai Patentee before: Shanghai Aerospace Energy Co., Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Sunway Filter Equipment Co., Ltd. Assignor: Shanghai Aerospace Energy Co., Ltd. Contract record no.: 2011320000490 Denomination of utility model: Static sealing method of lip sealing structure Granted publication date: 20080116 License type: Exclusive License Record date: 20110401 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080116 |
|
| EXPY | Termination of patent right or utility model |