CN203023473U - Seal assembly - Google Patents
Seal assembly Download PDFInfo
- Publication number
- CN203023473U CN203023473U CN2012207377240U CN201220737724U CN203023473U CN 203023473 U CN203023473 U CN 203023473U CN 2012207377240 U CN2012207377240 U CN 2012207377240U CN 201220737724 U CN201220737724 U CN 201220737724U CN 203023473 U CN203023473 U CN 203023473U
- Authority
- CN
- China
- Prior art keywords
- ring
- rubber
- helical spring
- black box
- root
- 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
Links
Images
Abstract
The utility model relates to a seal assembly which comprises a Y-shaped seal ring and a check ring, wherein the Y-shaped seal ring comprises a root part and two lips with a gradually expanding opening; the bottom ends of the two lips are processed together with the top end of the root part; the check ring comprises an annular skeleton; the annular skeleton is externally wrapped with rubber; the outer diameter of the check ring is the same as the outer diameter of the root part; and the inner diameter of the check ring is the same as the inner diameter of the root part. According to the utility model, since the check ring is matched with the Y-shaped seal ring, the root part of the Y-shaped seal ring can be effectively prevented from being extruded out of a gap in a seal surface under pressure; the check ring is an independent product, the manufacturing technology is simple, and the reject ratio is low; the check ring can be matched with multiple seal rings, and has a wide application range; and the material of the check ring is convenient for the package and transportation.
Description
Technical field
The utility model relates to a kind of black box, belongs to the sealing for pressure vessels field.
Background technique
for the rubber seal of working under condition of high voltage, for preventing that the root of seal ring is extruded from the gap under pressure, usually can install in the pressure-bearing side of seal ring and use nylon, the back-up ring that the hard material such as teflon or polyether-ether-ketone is made, these back-up rings are designed to annular shape more, be divided into opening and the form such as opening not, be arranged on the suitable positions such as root of seal ring pressure-bearing side, so that the back-up ring baffle seal circle by these hard produces excessive deformation because being subject to pressure medium on respective direction, avoid seal ring to be extruded from the gap and cause seal failure, when the seal ring of these back-up rings and large specification (size) supports the use, there are the following problems in meeting: be to reduce packaging volume, usually can be with its suitable twisting before the seal ring packing of large specification, folding to reduce volume, but when being provided with the hard back-up ring, can make nylon due to folding, the back-up ring that the hard material such as teflon or polyether-ether-ketone the is made inefficacy that is badly damaged, therefore can not fold, this brings very large trouble just for the even on-the-spot installation of packing and accumulating.can not fold for overcoming the hard back-up ring defective of bringing, people attempt adopting the garter spring of end-to-end to substitute the hard back-up ring, but because helical spring exists pitch gap and arbitrarily bending, directly adopt helical spring to substitute the hard back-up ring and can not play due technique effect, thus, someone attempts garter spring is directly vulcanized in seal ring, helical spring is fixed in seal ring, to overcome because of the random mobile not good problem of blocking effect that causes of helical spring independently, but the relative volume due to helical spring in mould is less, free space is large, very easily break away from due position because being out of shape or moving in sulfidation, therefore to make the product percent of pass of seal ring often very low for this mode.
The model utility content
For overcoming the above-mentioned deficiency of prior art, the purpose of this utility model is to provide a kind of black box, both instant packed transportations, but the loss that causes of the bad product of decrease again.
The technical solution adopted in the utility model is: a kind of black box, comprise y-type seal ring and back-up ring, described y-type seal ring comprises two lip limits of root and opening flaring, one is processed on the bottom on two described lip limits and the top of described root, described back-up ring comprises ring skeleton, described ring skeleton is coated with rubber, and the external diameter of described back-up ring is identical with the external diameter size of described root, and the internal diameter of described back-up ring is identical with the internal diameter size of described root.
The cross section of described back-up ring can be rectangular, trapezoidal, triangle or stair-stepping above-mentioned shape.
The hardness of described rubber preferably is not less than the hardness of described seal ring, and the hardness of described rubber is preferably IRHD70～90 degree.
Described rubber can be nitrile butadiene rubber, hydrogenated nitrile-butadiene rubber, butyl rubber, neoprene, carboxyl butyronitrile, chlorohydrin rubber, polyacrylate or fluorine rubber.
Described ring skeleton can be the helical spring of end-to-end, and the pressure-bearing side of described root can be provided with or not be provided with the sectional shape fitting recess identical with the sectional shape of described back-up ring.
Described helical spring cross section can rounded or rectangle.
Described helical spring can be carbon steel wire helical spring or stainless steel helical spring.
Described helical spring spring thread diameter is preferably 0.3～1.5mm.
Described helical spring spring ring axial clearance is preferably 0～5mm.
Described helical spring external diameter is preferably 2～10mm.
the beneficial effects of the utility model: back-up ring of the present utility model can be by suitable twisting, folding packing and the transportation volume of reducing, than adopting nylon, the back-up ring that teflon or polyetheretherketonematerials materials are made instant packed and the transportation, better than the anti-high pressure extrusion performance of back-up ring that adopts single rubber material to make, ring skeleton of the present utility model can effectively guarantee product size and shape of product in sulfidation, avoid occuring because of the mobile situations such as camber of spring or positioning that cause of sizing material in sulfidation, seal ring manufacturing process than embedded metal sulphide skeleton is simpler, the defective products rate is lower.
The utility model adopts back-up ring and y-type seal ring to be used in conjunction with, back-up ring is arranged on the pressure-bearing side of the root of y-type seal ring, can prevent effectively that the root of y-type seal ring is extruded under pressure from the gap of sealing surface, simultaneously, back-up ring of the present utility model separates with seal ring, as a product independently, can support the use with the seal ring of various structures form, Applicable scope is more extensive.
Description of drawings
Fig. 1 is the rectangular schematic cross-section in the cross section of described back-up ring of the present utility model;
Fig. 2 is that the cross section of described back-up ring of the present utility model is trapezoidal schematic cross-section;
Fig. 3 is erection drawing of the present utility model.
Embodiment
referring to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of black box, comprise y-type seal ring and back-up ring, described y-type seal ring comprises two lip limits 2 of root 1 and opening flaring, one is processed on the bottom on two described lip limits and the top of described root, described back-up ring comprises ring skeleton 3, described ring skeleton is coated with rubber 4, the external diameter of described back-up ring is identical with the external diameter size of described root, the internal diameter of described back-up ring is identical with the internal diameter size of described root, the pressure-bearing side of described root (under pressure, press to cell wall one side of the seal groove that seal ring is installed) can be provided with or not be provided with the sectional shape fitting recess identical with the sectional shape of described back-up ring, whether the pressure-bearing side of described root is provided with fitting recess 5, decide according to the sectional shape of described back-up ring.The coating of described ring skeleton outer rubber can adopt sulfuration process to complete.
The cross section of described back-up ring can be rectangular, trapezoidal, triangle or stair-stepping above-mentioned shape, when the sectional shape of described back-up ring is triangular in shape, be preferably right-angled triangle, and the outer rim of back-up ring is the right angle side of right-angled triangle, contact so that described back-up ring is face with the cell wall of the seal groove that seal ring is installed in use, more effectively play the support anti-extrusion effect to seal ring.
when the sectional shape of described back-up ring is rectangle, the pressure-bearing side of the root of described y-type seal ring does not need to be provided with fitting recess, during use, only needing that described back-up ring is adjacent to the pressure-bearing rear flank of described root and described y-type seal ring together is arranged in seal groove and gets final product, if the size of seal groove only is fit to described y-type seal ring is assemblied in wherein, the pressure-bearing side of described root can be cut away a part, the sectional shape of the part that cuts away identical with the sectional shape of described back-up ring (part that namely cuts away is big or small identical with described back-up ring), the pressure-bearing rear flank and the described y-type seal ring that described back-up ring are adjacent to described root together are arranged in seal groove again, when the sectional shape of described back-up ring during for other shape except rectangle, pressure-bearing side at described root processes the sectional shape fitting recess identical with the sectional shape of described back-up ring, during use, after being arranged in fitting recess, described back-up ring together is arranged in seal groove with described y-type seal ring.
The utility model adopts back-up ring and y-type seal ring to be used in conjunction with, and described back-up ring is arranged on the pressure-bearing side of described y-type seal ring, can prevent effectively that the root of y-type seal ring is extruded from the gap of sealing surface under pressure.
The hardness of described rubber can be identical with the hardness of described y-type seal ring or a little more than the hardness of described y-type seal ring, preferably a little more than the hardness of described y-type seal ring, can improve the anti-extrusion ability of described back-up ring, the hardness of described rubber is preferably IRHD70～90 degree, as IRHD70 degree, IRHD80 degree or IRHD90 degree.
Described rubber can be identical with the material of described y-type seal ring, also can be different from the material of described y-type seal ring, described rubber can be nitrile butadiene rubber, hydrogenated nitrile-butadiene rubber, butyl rubber, neoprene, carboxyl butyronitrile, chlorohydrin rubber, polyacrylate or fluorine rubber.
Described ring skeleton can be the helical spring of end-to-end, and described helical spring can carry out end-to-end by welding or the mode such as screw up.
Described helical spring cross section can rounded or rectangle.
Described helical spring can be carbon steel wire helical spring or stainless steel helical spring, also can make for other is suitable the spring that the material of spring is made.
Preferably, the cross-sectional width of described back-up ring and described helical spring external diameter are basic identical, and more approaching better (theoretical value is identical) only needs to guarantee that described helical spring the positioning phenomenon do not occur and gets final product in sulfidation.
Described helical spring spring thread diameter is preferably 0.3～1.5mm, as 0.3mm, 0.5mm, 0.8mm, 1.0mm or 1.5mm.Described helical spring spring ring axial clearance is preferably 0～5mm, as 0mm, 1.0mm, 2.0mm, 3.0mm, 4.0mm or 5.0mm.In the situation that the height of the shoulder of described lip-type packing and thickness allow, described helical spring external diameter is preferably 2～10mm, as 2mm, 4mm, 5mm, 8mm or 10mm.
Claims (10)
1. black box, it is characterized in that comprising y-type seal ring and back-up ring, described y-type seal ring comprises two lip limits of root and opening flaring, one is processed on the bottom on two described lip limits and the top of described root, described back-up ring comprises ring skeleton, described ring skeleton is coated with rubber, and the external diameter of described back-up ring is identical with the external diameter size of described root, and the internal diameter of described back-up ring is identical with the internal diameter size of described root.
2. black box as claimed in claim 1 is characterized in that the cross section of described back-up ring is rectangular, trapezoidal, triangle or stair-stepping above-mentioned shape.
3. black box as claimed in claim 2, is characterized in that the hardness of described rubber is not less than the hardness of described seal ring, and the hardness of described rubber is IRHD70～90 degree.
4. black box as claimed in claim 3, is characterized in that described rubber is nitrile butadiene rubber, hydrogenated nitrile-butadiene rubber, butyl rubber, neoprene, carboxyl butyronitrile, chlorohydrin rubber, polyacrylate or fluorine rubber.
5. as claim 1,2,3 or 4 described black boies, it is characterized in that described ring skeleton is the helical spring of end-to-end, the pressure-bearing side of described root is provided with or is not provided with the sectional shape fitting recess identical with the sectional shape of described back-up ring.
6. black box as claimed in claim 5 is characterized in that the rounded or rectangle in described helical spring cross section.
7. black box as claimed in claim 6, is characterized in that described helical spring is carbon steel wire helical spring or stainless steel helical spring.
8. black box as claimed in claim 7, is characterized in that described helical spring spring thread diameter is 0.3～1.5mm.
9. black box as claimed in claim 8, is characterized in that described helical spring spring ring axial clearance is 0～5mm.
10. black box as claimed in claim 9, is characterized in that described helical spring external diameter is 2～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207377240U CN203023473U (en) | 2012-12-28 | 2012-12-28 | Seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207377240U CN203023473U (en) | 2012-12-28 | 2012-12-28 | Seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023473U true CN203023473U (en) | 2013-06-26 |
Family
ID=48647460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207377240U Expired - Fee Related CN203023473U (en) | 2012-12-28 | 2012-12-28 | Seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727772A (en) * | 2015-03-13 | 2015-06-24 | 美钻能源科技(上海)有限公司 | Nonmetal sealing device with metal shell |
-
2012
- 2012-12-28 CN CN2012207377240U patent/CN203023473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727772A (en) * | 2015-03-13 | 2015-06-24 | 美钻能源科技(上海)有限公司 | Nonmetal sealing device with metal shell |
| CN104727772B (en) * | 2015-03-13 | 2017-08-29 | 美钻能源科技(上海)有限公司 | A kind of nonmetallic sealing device with metal shell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203717926U (en) | Sealing assembly | |
| CN203023478U (en) | Lip seal assembly | |
| CN106104105B (en) | Sealing device | |
| CN203297618U (en) | Sealing ring anti-disengaging sealing structure and sealing ring groove thereof | |
| CN105276317A (en) | Novel pressure hose and connecting component thereof | |
| CN203297617U (en) | Sealing ring anti-disengaging seal structure and sealing ring groove thereof | |
| CN203023473U (en) | Seal assembly | |
| CN203023474U (en) | Lip seal assembly provided with supporting spring at lip port | |
| CN206145120U (en) | Car is sealing washer for lamps and lanterns | |
| CN106134415B (en) | A kind of plunger type pipeline double containment joint for 35MPa pressure duct | |
| CN202158187U (en) | Anti-extrusion deformation gasket | |
| CN103047416B (en) | Be suitable for the seal ring assembly of pressurized container | |
| CN105240533A (en) | Gasket | |
| JP6346607B2 (en) | Reciprocating seal | |
| CN203035949U (en) | Lip seal ring with support spring at lip | |
| CN201475308U (en) | Piston ring | |
| CN202193593U (en) | Inclined connecting pipe for forklift | |
| CN204922299U (en) | M type helical bellows through socket and sealed nested contact of bellmouth | |
| CN103470607A (en) | Gasket | |
| US20160123466A1 (en) | Piston ring | |
| CN209370470U (en) | A kind of high-performance rotating seal | |
| CN103672184A (en) | Air conditioner connecting pipe and manufacturing and using method thereof | |
| CN104832423B (en) | A kind of valve block and check valve | |
| CN211435843U (en) | Leak-proof oil cup for hydraulic system | |
| CN203273107U (en) | Embedded type high-pressure petroleum transportation pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20191228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |