CN103851204A - Static sealing method of lip sealing structure - Google Patents
Static sealing method of lip sealing structure Download PDFInfo
- Publication number
- CN103851204A CN103851204A CN201210511405.2A CN201210511405A CN103851204A CN 103851204 A CN103851204 A CN 103851204A CN 201210511405 A CN201210511405 A CN 201210511405A CN 103851204 A CN103851204 A CN 103851204A
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- lip
- type packing
- lower flange
- back pressure
- groove
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Abstract
The invention relates to a static sealing method of a lip sealing structure. A lip sealing ring is adopted. The method is characterized in that the bottom of the lip sealing ring is provided with a semicircular groove, the two sides of a lip sealing ring body are respectively provided with a semicircular radial sealing convex part, and the lip part of the lip sealing ring forms an angle of 30 to 35 degrees with the horizontal direction; a lower flange of a container or equipment is provided with a back pressure air flow passage and a vacuum passage which are led into the bottom groove of the lip sealing ring body, and a gap between the lip sealing ring body and a sealing groove of the lower flange is 0.2 to 0.25mm; an outer air source is led into the semicircular groove by the back pressure air flow passage of the lower flange, the lip sealing ring is supported by the back pressure of 0.2MPa to 1.5MPa, and then the sealing surface of the lip sealing ring or the sealing surface of an upper flange of the container or the equipment is sealed; the radial sealing is formed between the radial sealing convex part of the lip sealing ring and the sealing groove of the lower flange; when the container or the equipment is opened, the back pressure air flow passage is switched into a vacuum passage, the vacuum degree in the bottom groove is 0.07MPa, and then the upper flange and the lower flange can be opened.
Description
Technical field
The present invention relates to the encapsulating method for food, chemical industry, medical container or equipment quick-opening device.
Background technique
Existing lip seal configuration has two class seal form: a kind of for the motive sealing of motion repeatedly, its relies on seal ring lip to be close to sealing male part surface, blocks leakage way and obtains sealing effect, realizes self-tightening sealing by the pressure of medium; Another kind is the static seal in container or equipment, and wire is set in seal ring coil, increases elasticity, but sealing principle is still realized self-tightening sealing by the pressure in container.This two classes sealing is all to rely on the pressure of medium to enter the lip of seal ring, makes lip distending and sealing surface coupling, realizes sealing, be that pressure is higher, sealing effect is better, but all exist pressure low≤0.6MPa(is that equipment just starts) time sealing effect poor, easily produce and leak.Therefore can not be used in the very strict and lower occasion of the pressure of equipment of seal request own.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, provide a kind of can be low at pressure, have the encapsulating method of the lip seal configuration of good footpath, axle two way sealed effect in container that seal request is strict or equipment.
Technological scheme of the present invention adopts lip-type packing, semicircular groove is arranged at the bottom that it is characterized in that lip-type packing, there is the radial seal projection of semicircular arc the circle body both sides of lip-type packing, the semicircular arc of radial seal projection exceeds circle body side 0.8mm, and the lip of the lip of lip-type packing becomes 30 °～35 ° angles with level; The lower flange of container or equipment is shaped with back pressure flow passage and vacuum passage passes in lip-type packing bottom groove, back pressure flow passage is connected external air source with vacuum passage through control valve, and the circle body side of lip-type packing and lower flange seal groove side clearance are 0.2～0.25mm; When lip-type packing work, external air source enters in lip-type packing bottom semicircular connected in star by the back pressure flow passage of lower flange, back pressure pressure is controlled at 0.2MPa～1.5MPa, the back pressure forming holds up lip-type packing, the sealing surface of lip-type packing lip and container or equipment upper flange sealing surface are fitted tightly, realize pre-sealed, in the time that container or equipment boost, the force value of back pressure wants the force value of container or device interior high, and with internal pressure make lip open produce self-tightening be combined, jointly complete the axial seal between upper flange and lower flange; Between the radial seal projection of lip-type packing and the seal groove both sides of lower flange, form radial seal; When container or opening of device, first inner pressure release, back pressure flow passage is switched to vacuum passage simultaneously, at least 0.07MPa of degree of vacuum in bottom groove, in lip-type packing bottom groove, form vacuum, make lip-type packing circle body fall the seal groove bottom to lower flange after rise, now upper flange and lower flange can be opened.
Outstanding feature of the present invention is that lip-type packing is shaped with bottom groove, there is seal convexity lip-type packing circle body both sides, lip-type packing is arranged in low pressure vessel or equipment quick-opening device flange sealing trough, the back pressure of introducing by the groove on seal ring circle bottom and the seal convexity of seal ring coil both sides can be realized footpath, axle two way sealed, have solved the poor problem of low-pressure state lip-type packing sealing effect.The compression molding of sealing circle, can Reusability, is suitable for extensive use in the quick-opening device of the industries such as chemical industry, food, medicine.
Brief description of the drawings
Fig. 1 is the plan view of lip-type packing.
Fig. 2 is the cross-sectional view of lip-type packing.
Fig. 3 is the sealing schematic diagram of lip-type packing.
Embodiment
The lip-type packing 1(that the present invention adopts is referring to accompanying drawing) semi-circular recesses 11 arranged at bottom; There is semicircular arc radial seal projection 12 the circle body both sides of lip-type packing, the semicircular arc of radial seal projection exceeds circle body side 0.8mm, seal groove 32 side clearancies of lip-type packing circle body side and lower flange 3 are 0.2～0.25mm, radial seal projection like this has 25% ~ 30% compressibility while putting into lower flange seal groove, ensure the radial seal of lower flange, cut off again inside and outside two-part the communicating of flange, the pressure of back pressure and interior pressure all can be kept simultaneously; The lip 14 of the lip 13 of lip-type packing becomes 30 °～35 ° angles with level, can make axial seal effect better; The lower flange of container or equipment has back pressure flow passage 33 and vacuum passage 34 to pass in lip-type packing bottom groove, and back pressure flow passage is connected external air source with vacuum passage through control valve; When sealing configuration work, external air source enters in lip-type packing bottom groove by lower flange back pressure flow passage, the outer gas stream of introducing forms back pressure at this, back pressure pressure is controlled at the principal pressure that 0.2MPa～1.5MPa is axial seal, lip-type packing is held up, medium internal pressure opens lip at lip place, lip is that aux. pressure fits tightly the sealing surface 15 of lip-type packing lip and container or equipment upper flange sealing surface to the pressure of upper flange 2 sealing surfaces 21, and the two forms the sealing load of axial seal jointly; When opening of device, first inner pressure release, back pressure flow passage switches to vacuum passage simultaneously, in lip-type packing bottom groove, form vacuum, at least 0.07MPa of degree of vacuum in bottom groove, make lip-type packing circle body fall the seal groove bottom 31 to lower flange after rise, now upper flange and lower flange can easily be opened.The present invention makes container or equipment still have good sealability under the very low operating mode of working pressure.
Claims (1)
1. the static seal method of a lip seal configuration, adopt lip-type packing, semicircular groove is arranged at the bottom that it is characterized in that lip-type packing, there is the radial seal projection of semicircular arc the circle body both sides of lip-type packing, the semicircular arc of radial seal projection exceeds circle body side 0.8mm, and the lip of the lip of lip-type packing becomes 30 °～35 ° angles with level; The lower flange of container or equipment is shaped with back pressure flow passage and vacuum passage passes in lip-type packing bottom groove, back pressure flow passage is connected external air source with vacuum passage through control valve, and the circle body side of lip-type packing and lower flange seal groove side clearance are 0.2～0.25mm; When lip-type packing work, external air source enters in lip-type packing bottom semicircular connected in star by the back pressure flow passage of lower flange, back pressure pressure is controlled at 0.2MPa～1.5MPa, the back pressure forming holds up lip-type packing, the sealing surface of lip-type packing lip and container or equipment upper flange sealing surface are fitted tightly, realize pre-sealed, in the time that container or equipment boost, the force value of back pressure wants the force value of container or device interior high, and with internal pressure make lip open produce self-tightening be combined, jointly complete the axial seal between upper flange and lower flange; Between the radial seal projection of lip-type packing and the seal groove both sides of lower flange, form radial seal; When container or opening of device, first inner pressure release, back pressure flow passage is switched to vacuum passage simultaneously, at least 0.07MPa of degree of vacuum in bottom groove, in lip-type packing bottom groove, form vacuum, make lip-type packing circle body fall the seal groove bottom to lower flange after rise, now upper flange and lower flange can be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511405.2A CN103851204A (en) | 2012-12-04 | 2012-12-04 | Static sealing method of lip sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511405.2A CN103851204A (en) | 2012-12-04 | 2012-12-04 | Static sealing method of lip sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851204A true CN103851204A (en) | 2014-06-11 |
Family
ID=50859198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210511405.2A Pending CN103851204A (en) | 2012-12-04 | 2012-12-04 | Static sealing method of lip sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851204A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107429845A (en) * | 2014-09-01 | 2017-12-01 | 特瑞堡密封系统德国有限公司 | With can pressure activation pretension element sealing arrangement system |
| CN111927951A (en) * | 2020-09-07 | 2020-11-13 | 中国地震局地质研究所 | Static sealing structure and pressure container with same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2395066A1 (en) * | 1977-06-21 | 1979-01-19 | Gambini Joseph | Autoclave, partic. operating alternately under pressure and vacuum - incorporates joint ensuring fluid-tightness under both conditions without necessity for mechanical means of tightness |
| US4469335A (en) * | 1982-07-22 | 1984-09-04 | American Sterilizer Company | Sealing apparatus with sealing device operable under pressure differential established thereacross |
| JPS61106332U (en) * | 1984-12-17 | 1986-07-05 | ||
| JPH0671964U (en) * | 1993-03-23 | 1994-10-07 | 株式会社日阪製作所 | Inner and outer pressure seals used for high temperature and high pressure sterilizer |
| JPH08210505A (en) * | 1995-02-06 | 1996-08-20 | Hisaka Works Ltd | Sealing device used for steam sterilizing device and the like |
| JPH08254273A (en) * | 1995-03-17 | 1996-10-01 | Hisaka Works Ltd | Sealing structure of airtight vessel |
| US20030178792A1 (en) * | 2002-03-25 | 2003-09-25 | Pridmore Ken T. | Sealing head |
| CN201003607Y (en) * | 2006-12-31 | 2008-01-09 | 张小中 | Quick-opening pressure container sealing device |
-
2012
- 2012-12-04 CN CN201210511405.2A patent/CN103851204A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2395066A1 (en) * | 1977-06-21 | 1979-01-19 | Gambini Joseph | Autoclave, partic. operating alternately under pressure and vacuum - incorporates joint ensuring fluid-tightness under both conditions without necessity for mechanical means of tightness |
| US4469335A (en) * | 1982-07-22 | 1984-09-04 | American Sterilizer Company | Sealing apparatus with sealing device operable under pressure differential established thereacross |
| JPS61106332U (en) * | 1984-12-17 | 1986-07-05 | ||
| JPH0671964U (en) * | 1993-03-23 | 1994-10-07 | 株式会社日阪製作所 | Inner and outer pressure seals used for high temperature and high pressure sterilizer |
| JPH08210505A (en) * | 1995-02-06 | 1996-08-20 | Hisaka Works Ltd | Sealing device used for steam sterilizing device and the like |
| JPH08254273A (en) * | 1995-03-17 | 1996-10-01 | Hisaka Works Ltd | Sealing structure of airtight vessel |
| US20030178792A1 (en) * | 2002-03-25 | 2003-09-25 | Pridmore Ken T. | Sealing head |
| CN201003607Y (en) * | 2006-12-31 | 2008-01-09 | 张小中 | Quick-opening pressure container sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429845A (en) * | 2014-09-01 | 2017-12-01 | 特瑞堡密封系统德国有限公司 | With can pressure activation pretension element sealing arrangement system |
| 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 |
| CN111927951A (en) * | 2020-09-07 | 2020-11-13 | 中国地震局地质研究所 | Static sealing structure and pressure container with same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |