CN201772058U - Double O-shaped sealing ring type sealing device - Google Patents
Double O-shaped sealing ring type sealing device Download PDFInfo
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- CN201772058U CN201772058U CN2010205242216U CN201020524221U CN201772058U CN 201772058 U CN201772058 U CN 201772058U CN 2010205242216 U CN2010205242216 U CN 2010205242216U CN 201020524221 U CN201020524221 U CN 201020524221U CN 201772058 U CN201772058 U CN 201772058U
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Abstract
The utility model discloses a double O-shaped sealing ring type sealing device which comprises the following components: a tank body sealing surface which is provided on the tank body, a tank door sealing surface which is provided on the tank door, sealing ring grooves which are provided on the tank body sealing surface, and O-shaped sealing rings which are equipped in the sealing ring groove. The utility model is characterized in that: the sealing ring grooves comprise at least two sealing ring grooves; the O-shaped sealing rings comprise at least two O-shaped sealing rings with different diameters of cross section; and the O-shaped sealing rings with different diameters of cross section are equipped in the corresponding sealing ring grooves from inner part to outer part according to a sequence that the diameters of the cross sections enlarge. According to the utility model, two sealing rings with different diameters of cross section are adopted for sealing the tank door, and the pressure generated by the atmosphere applied to the tank body can be sheared by the two sealing rings. Therefore, the sealing performance of the sealing device is effectively improved, and the service life of the sealing device is prolonged.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly a kind of pair of O-ring seals formula seal arrangement.
Background technique
The square vacuum drying tank of transformation method drying equipment and Kerosene Vapour-Phase Drying Device is because bulky (80～700m
3), must adopt the mode of on-the-spot welding to make.The sealing surface of dry can jar mouth can't carry out the integrated type machining, employing be segmentation processing, the mode of on-the-spot welding is made.Soldering group to the time all multifactor influences such as straightness of degree of accuracy, welding stress, welding deformation and sealing surface itself under, the planeness after the sealing surface welding is difficult to guarantee that this sealability influence for seal arrangement is all very big.And vacuum drying tank is very high to the requirement of sealing, and leak-down rate must be controlled in the very little index.The leakage rate of vacuum tank, what have the greatest impact is exactly the effect of Jar opening sealer device.In addition, under the negative pressure state, jar up to a hundred tons the pressure that door produces is applied on the seal ring, and this has proposed higher requirement of withstand voltage to seal arrangement.
Jar opening sealer device in the past has several seal arrangements such as single O shape circle formula, single abnormity circle, single lip circle formula, double-lipped circle formula usually.These several seal arrangements are because the structural feature of self all exists weak point in working life, complex structure, defectives such as difficulty of processing is big, construction requirement is high, sealing reliability difference.Below narration respectively.Single O shape circle formula seal arrangement (accompanying drawing 3) is simple in structure, and sealing effect is better, but back jar up to a hundred tons the atmospheric pressure major part that door bears of finding time is born by seal ring, the easy pressure break of seal ring, be applicable to the small size vacuum chamber, be used on the large-scale vacuum dry can that the life-span is extremely short.Single special-shaped circle formula seal arrangement (accompanying drawing 4) is similar to single O shape circle formula seal arrangement, owing to be hollow structure, the life-span is long slightly, but complex-shaped, needs the die sinking customization.Single lip circle formula seal arrangement (accompanying drawing 5) is approaching with single special-shaped circle formula seal arrangement, and the planeness of sealing surface is had relatively high expectations, and press strip is complex-shaped, is difficult to processing, and seal ring is complex-shaped equally, needs the die sinking customization.Double-lipped circle formula seal arrangement (accompanying drawing 6) adopts the two seals circle, and better than single lip circle sealing effect, compression capability is stronger, but the sealing surface planeness requires height, and seal ring press strip processed complex has deviation or error sealing effect just to be difficult to guarantee slightly.
In sum, the seal arrangement bearing capacity of wall scroll seal ring is little, is applicable to the small size vacuum chamber, is used for the large-scale vacuum chamber and then can not normally uses.Double-lipped seal arrangement voltage endurance capability is good, can be used for the large-scale vacuum chamber, but the part shape complexity, difficulty of processing is big, and the planeness requirement to sealing surface during installation is high, and construction is difficulty very, so sealing effect is difficult to guarantee.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides that a kind of sealability is reliable, longer service life, two O-ring seals formula seal arrangements simple in structure.
The technological scheme that its technical problem that solves the utility model adopts is:
Comprise the tank body sealing surface that is arranged on the tank body, be arranged on the jar door sealing face on jar door, it is characterized in that: described tank body sealing surface is provided with at least two O-ring seals that diameter of section is different, the different O-ring seals both sides of described diameter of section are provided with seal trim strip correspondingly, and the different O-ring seals of described diameter of section is installed from the inside to the outside according to the ascending order of diameter of section.
Described seal trim strip comprises intermediate seal press strip, first seal trim strip and second seal trim strip, described O-ring seals comprises big O-ring seals and little O-ring seals, the diameter of section of described big O-ring seals is greater than the diameter of section of little O-ring seals, described big O-ring seals is installed between the intermediate seal press strip and second seal trim strip, and described little O-ring seals is installed between the intermediate seal press strip and first seal trim strip.
Described first seal trim strip, one side is provided with the first sealing inclined-plane and second seal trim strip, one side is provided with the second sealing inclined-plane, and intermediate seal press strip both sides are respectively equipped with the first intermediate seal inclined-plane and the second intermediate seal inclined-plane.
The beneficial effects of the utility model are: the two seals circle that the utility model has adopted diameter of section to vary in size comes the hermetically sealed can door, the pressure that barometric pressure produced that is applied on jar door can be shared on the two seals circle, the overall voltage endurance capability of seal arrangement is greatly improved, bring up to two year by original some months the working life of seal ring, suitable with rubber normal ageing failure time under the equipment work temperature.Therefore, effectively improve the sealability of seal arrangement, prolonged the performance of seal arrangement.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model overall schematic;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is single O shape circle formula seal arrangement;
Fig. 4 is single special-shaped circle formula seal arrangement;
Fig. 5 is single lip circle formula seal arrangement;
Fig. 6 is a double-lipped circle formula seal arrangement.
Embodiment
Referring to figs. 1 through Fig. 6, the utility model discloses a kind of pair of O-ring seals formula seal arrangement, comprise the tank body sealing surface 1 that is arranged on the tank body, be arranged on the jar door sealing face 2 on jar door, tank body sealing surface 1 is provided with at least two O-ring seals that diameter of section is different, the different O-ring seals both sides of diameter of section are provided with seal trim strip correspondingly, and the different O-ring seals of diameter of section is installed from the inside to the outside according to the ascending order of diameter of section.
As shown in the figure, seal trim strip in this specific embodiment comprises intermediate seal press strip 15, first seal trim strip 16 and second seal trim strip 17, O-ring seals comprises big O-ring seals 12 and little O-ring seals 11, the diameter of section of big O-ring seals 12 is greater than the diameter of section of little O-ring seals 11, and O-ring seals 12 is installed between the intermediate seal press strip 15 and second seal trim strip 17 greatly, and little O-ring seals 11 is installed between the intermediate seal press strips 15 and first seal trim strip 16.Adopting two different O-ring seals of diameter of section is the optimal way of this specific embodiment, because the pressure that barometric pressure produced that is applied on jar door can be shared on the two seals circle, the overall voltage endurance capability of seal arrangement is greatly improved.Certainly, O-ring seals also can adopt three or four ... the O-ring seals that diameter of section is different, said structure also can reach good sealing effect.But the structure that adopts in this specific embodiment had both reached good sealing effect, saved cost again most.Further, the seal trim strip in the present embodiment adopts segmentation processing to be fixed on the method installation of carrying out assembly welding on the tank body sealing surface 1 by socket head screw then.Easy processing but also easy for installation not only, the installation precision that reaches is also high.
As shown in the figure, first seal trim strip, 16 1 sides are provided with the first sealing inclined-plane 161 and second seal trim strip, 17 1 sides are provided with the second sealing inclined-plane 171, intermediate seal press strip 15 both sides are respectively equipped with the first intermediate seal inclined-plane 151 and the second intermediate seal inclined-plane 152, two adjacent seal trim strips constitute dovetail groove by adjacent two inclined-planes disposed thereon and tank body sealing surface 1, O-ring seals snaps in the corresponding dovetail groove, be fixed on the tank body sealing surface 1 by dovetail groove, when having avoided installation or a jar door when opening, O-ring seals drops out between the seal trim strip.
The utility model working principle is as follows: this structure applications is in the sealing of large-scale vacuum dry can jar mouth, 115～135 ℃ of the operating temperatures of vacuum drying tank, the highest negative pressure of bearing be 1bar (perhaps be expressed as-0.1Mpa), leak-down rate requires to be generally 100～700PaL/s.The utility model is after installing on the vacuum drying tank, and the vacuum pump group that can utilize equipment to join vacuumizes.When vacuumizing, confirm that earlier all valves of vacuum tank all are in closed condition, again by oil hydraulic cylinder with the tension of jar door, jar door sealing face 2 contacts with seal ring on the tank body, the formation pretension can start vacuum pump group type and find time.
The starting stage that vacuum drying tank vacuumizes, the big O-ring seals of jar door sealing face 2 first contacting section diameters, the O-ring seals pressurized that diameter of section is big begins to compress, after waiting to be evacuated to about 0.4bar (1bar is about a barometric pressure), the little O-ring seals of jar door sealing face 2 contacting section diameters, the two seals circle just seals simultaneously.The final inside and outside atmospheric pressure difference of vacuum tank is cut off into two-stage by the space between the two seals circle, the about 0.6bar of pressure difference of the O-ring seals both sides that diameter of section is big, the about 0.4bar of pressure difference of the O-ring seals both sides that diameter of section is little.The pressure difference of seal ring both sides is exactly to produce the power source that leaks, and seals on an equal basis under the condition of pretightening force, and pressure difference is little, and leak-down rate is just low.Compare other seal arrangement, seal ring pressure at both sides difference is the situation of 1bar, and the sealability of this unique seal structure just improves a lot.
The utility model is simple in structure, adopts the most conventional seal element and conventional manufacturing process, and fabrication and installation are easy, good sealing effect.
Claims (3)
1. two O-ring seals formula seal arrangements, comprise the tank body sealing surface (1) that is arranged on the tank body, be arranged on the jar door sealing face (2) on jar door, it is characterized in that: described tank body sealing surface (1) is provided with at least two O-ring seals that diameter of section is different, the different O-ring seals both sides of described diameter of section are provided with seal trim strip correspondingly, and the different O-ring seals of described diameter of section is installed from the inside to the outside according to the ascending order of diameter of section.
2. according to claim 1 pair of O-ring seals formula seal arrangement, it is characterized in that: described seal trim strip comprises intermediate seal press strip (15), first seal trim strip (16) and second seal trim strip (17), described O-ring seals comprises big O-ring seals (12) and little O-ring seals (11), the diameter of section of described big O-ring seals (12) is greater than the diameter of section of little O-ring seals (11), described big O-ring seals (12) is installed between intermediate seal press strip (15) and second seal trim strip (17), and described little O-ring seals (11) is installed between intermediate seal press strip (15) and first seal trim strip (16).
3. according to claim 2 pair of O-ring seals formula seal arrangement, it is characterized in that: described first seal trim strip (16) one sides are provided with the first sealing inclined-plane (161) and second seal trim strip (17) one sides are provided with the second sealing inclined-plane (171), and intermediate seal press strip (15) both sides are respectively equipped with the first intermediate seal inclined-plane (151) and the second intermediate seal inclined-plane (152).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205242216U CN201772058U (en) | 2010-09-08 | 2010-09-08 | Double O-shaped sealing ring type sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205242216U CN201772058U (en) | 2010-09-08 | 2010-09-08 | Double O-shaped sealing ring type sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772058U true CN201772058U (en) | 2011-03-23 |
Family
ID=43751900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205242216U Expired - Lifetime CN201772058U (en) | 2010-09-08 | 2010-09-08 | Double O-shaped sealing ring type sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772058U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936395A (en) * | 2010-09-08 | 2011-01-05 | 中山凯旋真空技术工程有限公司 | Double O-shaped seal-ring-type seal device |
| CN103527783A (en) * | 2012-07-05 | 2014-01-22 | 上海宏力半导体制造有限公司 | Sealing device for plasma tube device cover body in ASP cavity |
| CN111469569A (en) * | 2016-03-23 | 2020-07-31 | 沙奇哈塔株式会社 | Reverse seal |
-
2010
- 2010-09-08 CN CN2010205242216U patent/CN201772058U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936395A (en) * | 2010-09-08 | 2011-01-05 | 中山凯旋真空技术工程有限公司 | Double O-shaped seal-ring-type seal device |
| CN103527783A (en) * | 2012-07-05 | 2014-01-22 | 上海宏力半导体制造有限公司 | Sealing device for plasma tube device cover body in ASP cavity |
| CN111469569A (en) * | 2016-03-23 | 2020-07-31 | 沙奇哈塔株式会社 | Reverse seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 528478 Guangdong city of Zhongshan Province Town Ring Road No. 27. Patentee after: Zhongshan triumphant vacuum Polytron Technologies Inc Address before: 528400 Guangdong city of Zhongshan province Henglan Town Yongfeng Industrial Zone Patentee before: Zhongshan Kaixuan Vacuum Technology Project Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |