CN2366630Y - Three-ring type combination type sealing means - Google Patents
Three-ring type combination type sealing means Download PDFInfo
- Publication number
- CN2366630Y CN2366630Y CN 98218911 CN98218911U CN2366630Y CN 2366630 Y CN2366630 Y CN 2366630Y CN 98218911 CN98218911 CN 98218911 CN 98218911 U CN98218911 U CN 98218911U CN 2366630 Y CN2366630 Y CN 2366630Y
- Authority
- CN
- China
- Prior art keywords
- ring
- seal
- usefulness
- piston
- drag
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 9
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
Images
Abstract
The utility model relates to a sealing device of hydraulic and pneumatic elements, which is characterized in that a combined sealing ring composed of an anti-drag ring and an O-shaped ring and a three-purpose ring are installed in the same sealing slot so as to obtain a bidirectional sealing function. The utility model has the advantages of small frictional resistance, capability of high pressure resistance, and the convenient realization of closed type installation.
Description
The utility model relates to the seal arrangement in a kind of hydraulic pressure and the pneumatic element, belongs to shaped packing seal in the contact seal class in motive sealing.Be particularly suitable for repairing the update of Sealing when using oil cylinder and cylinder again.
In prior art, have advantages such as can enclosed install, piston structure is simple, easy for installation, cheap as O-ring seals (ZBJ22002-88), yx RunddichtringO (JB/ZQ4264-86).So use very generally, become the traditional seal style of oil cylinder and cylinder.But its shortcoming also clearly: promptly above-mentioned these seal arrangements all are the friction pairs that forms between rubber (or polyurethane) and metal, and friction factor is big, and need to add in addition guide ring between piston and the cylinder body.Especially more than pressure medium is elevated to 31.5MPa and speed surpass 3 meter per seconds and the life-span obviously shorten the fault showed increased when above.Along with the development of hydraulics this part with the anxious replacement to be updated of oil cylinder.Existing cydariform seal ring has can be high pressure resistant and the advantage of good reliability, and shortcoming is the too big and necessary open type installation of surface friction drag.Some sealer with assembled have appearred again in the appearance along with new materials such as teflon in the last few years.As famous Hong Geer seal ring, Ge Laiquan, this special envelope etc. this class combined type packing ring is arranged all, domesticly on the basis of external this class seal ring of further investigation, also developed in recent years with difunctional " pin " shape sliding ring type combination seal, profile of tooth sliding ring type combination seal, C shape sliding ring type combination seal and right angle sliding ring type combination seal (ZL92204643.3) etc.Above-mentioned these novel seal circles have all adopted the structural type of engineering plastics spare (as teflon) with the rubber parts combination, and all be that the working of plastics (hereinafter to be referred as anti-drag ring) that makes friction factor very little contacts with moving surface, the very big rubber parts of elasticity is contacted with quiet surface, so it is extremely low that the common advantage of this class seal ring is a surface friction drag, good seal performance, life-span is long, high pressure resistant, common shortcoming is to produce bigger distortion because working of plastics is difficult for resembling the rubber parts, do not need to make the open type of anti-drag ring elongation to install so preferably adopt, this just makes the piston structure complexity, and cost improves.If select the contour performance materials of teflon for use, by measures such as hot charging or use special toolings, install again though also can realize enclosed, but both increased difficulty, increased cost again.
The purpose of this utility model is exactly to provide a kind of seal arrangement in order to overcome deficiency of the prior art, realizes that existing surface friction drag is low, good seal performance, long, high voltage bearing advantage of life-span, can resemble y again
xShape circle is installed in the blind groove like that easily, even can be when restoring oil cylinder and y
xThe shape circle has interchangeability, so that with lower cost, make the y that extensively adopts at present
xSeal rings such as shape circle update.
The purpose of this utility model is achieved through the following technical measures: this seal arrangement comprises three usefulness ring and combined seal ring two-part.Seal ring wherein can be seal rings such as above-mentioned slip-ring seal, Ge Laiquan, this special envelope of outsourcing, also can be that basis is repaired the combined type packing ring that the seal groove of oil cylinder is specially joined.Wherein three usefulness ring is the opening annulus made from engineering plastics such as nylon, and its external diameter is identical with the internal diameter nominal size of cylinder body 1, and directly nominal size is identical at the bottom of the seal groove on its internal diameter and the piston.The periphery that is used for the three usefulness ring on the piston slides along oil cylinder inner wall, and the bottom of the seal groove on its inner headed face and the piston contacts, and the side that three usefulness are encircled contacts another side and piston seal groove contacts side surfaces with combined type packing ring.Three usefulness ring is contained in the side near the A face, and combined seal ring is contained in the side near the B face.The three usefulness ring that is used on the piston rod is similar therewith.
Description of drawings of the present utility model is as follows:
Fig. 1 is a three-ring type combination sealing arrangement sectional view
Fig. 2 is that the enclosed of right angle sliding ring type combination seal is installed sectional view
Fig. 3 is that the open type of right angle sliding ring type combination seal is installed sectional view
Fig. 4 installs sectional view for lattice come trapped
Fig. 5 encloses the sectional view of the three-ring type combination seal of composition for dative
Wherein: cylinder body 1, piston 2, three usefulness ring 3, O type circle 4, anti-drag ring (right angle slip ring) 5, piston rod 6, piston small end periphery A, the big end periphery of piston B, isolating ring 7, fastening screw trip bolt 8, pressing plate 9.
Below in conjunction with accompanying drawing embodiment of the present utility model is described as follows: the three-ring type seal arrangement that Fig. 1 is made up of three usefulness ring and anti-drag ring combined labyrinth and carbon gland.The three-ring type seal arrangement generally be installed in can with y
xIn the groove of the prolate shape that the shape seal ring exchanges, O shape circle 4 is contained in the middle of the flat groove, and three usefulness ring 3 and anti-drag ring 5 are contained in the both sides of O shape circle respectively.Three usefulness ring 3 is the opening annulus of a rectangular cross section,
Generally with engineering plastics etc. than the soft material manufacturing.It plays three effects.The firstth, play guide ring: can avoid the piston of metal to scratch inner surface of cylinder block, so can save guide ring usually when using the three-ring type seal arrangement.Second plays anti-extrusion ring: the three-ring type seal arrangement has the two way sealed function, and anti-drag ring 5 plays the anti-extrusion ring effect when generally bearing positive pressure (left side is hyperbaric chamber among Fig. 1).Three usefulness ring 3 plays the anti-extrusion ring effect when bearing backpressure, prevents that simultaneously O shape circle 4 from deviating from from the left side.When and arranged on left and right sides pressure difference was big, three usefulness ring 3 was contained in the high pressure side.The 3rd works to simplify installation: deviate from from left end because three usefulness ring 3 can prevent O shape circle, so the diameter of piston left end cylindrical A can be significantly less than right-hand member cylindrical B, and approach the endoporus of anti-drag ring 5.Needn't stretch with the anti-drag ring 5 of plastics manufacturing so just can directly pack in the piston groove that enclosed installs, and then the O shape circle 4 with the rubber manufacturing is elongated and is inserted in the groove and compresses into anti-drag ring 5, at last three usefulness that have opening is encircled 3 and packs into and get final product in the groove.
The utility model compared with prior art has following advantage:
1, compares y
xSurface friction drag such as shape circle, O shape circle, cydariform circle are little.
2, installation of the present utility model is installed (Fig. 3) equally conveniently with the open type of right angle slip ring combined labyrinth and carbon gland, but has reduced the cost of piston.
3, mounting type of the present utility model is enclosed installation (Fig. 1, Fig. 5), but its mounting process is simpler than the independent mounting process of the enclosed installation (Fig. 2) of right angle sliding ring type combination seal, enclosed installation (Fig. 4) that lattice enclose or the like that uses.From Fig. 2 and Fig. 4 as can be seen, its structures shape above-mentioned this class seal arrangement must install with hot charging or with special-purpose frock, so installation cost is than the utility model height, simultaneously as can be seen, it is difficult not only to install, and it is more difficult to dismantle, and the utility model dismounting is very convenient.
Claims (3)
1, a kind of three-ring type combination sealing arrangement, comprise piston (2), cylinder body (1), three usefulness ring (3) and combined type packing ring, it is characterized in that: combined labyrinth and carbon gland of being made up of anti-drag ring (5) and O shape circle (4) and three usefulness rings (3) are installed in the same seal groove side by side.
2, seal arrangement as claimed in claim 1 is characterized in that: three usefulness ring (3) is for having the annulus of opening, and its external diameter is identical with the internal diameter nominal size of cylinder body (1), and directly nominal size is identical at the bottom of the seal groove on its internal diameter and the piston.Its internal diameter is identical with bar footpath nominal size when being used for rod seal.
3, seal arrangement as claimed in claim 1 is characterized in that: the seal groove of piston (2) left side cylindrical (A) diameter less than the diameter of right side cylindrical (B) near the internal diameter of anti-drag ring (5), three usefulness ring is contained in the side near the A face, and combined seal ring is contained in the side near the B face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98218911 CN2366630Y (en) | 1998-09-01 | 1998-09-01 | Three-ring type combination type sealing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98218911 CN2366630Y (en) | 1998-09-01 | 1998-09-01 | Three-ring type combination type sealing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366630Y true CN2366630Y (en) | 2000-03-01 |
Family
ID=33971138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98218911 Expired - Fee Related CN2366630Y (en) | 1998-09-01 | 1998-09-01 | Three-ring type combination type sealing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366630Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915311A (en) * | 2010-09-26 | 2010-12-15 | 河北宣化工程机械股份有限公司 | Low-pressure reciprocating mechanism of engineering machinery chassis |
| CN103498918A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | High-temperature cylinder sealing assembly |
| CN105041632A (en) * | 2015-06-29 | 2015-11-11 | 孟凡英 | High-pressure pump |
| CN113217737A (en) * | 2021-05-12 | 2021-08-06 | 贵州詹阳动力重工有限公司 | Assembly method of all-terrain vehicle rotary joint and rotary joint |
-
1998
- 1998-09-01 CN CN 98218911 patent/CN2366630Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915311A (en) * | 2010-09-26 | 2010-12-15 | 河北宣化工程机械股份有限公司 | Low-pressure reciprocating mechanism of engineering machinery chassis |
| CN103498918A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | High-temperature cylinder sealing assembly |
| CN105041632A (en) * | 2015-06-29 | 2015-11-11 | 孟凡英 | High-pressure pump |
| CN113217737A (en) * | 2021-05-12 | 2021-08-06 | 贵州詹阳动力重工有限公司 | Assembly method of all-terrain vehicle rotary joint and rotary joint |
| CN113217737B (en) * | 2021-05-12 | 2022-06-17 | 贵州詹阳动力重工有限公司 | Assembly method of all-terrain vehicle rotary joint and rotary joint |
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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: ROOM 505,BUILDING 113,NANXINGYUAN MIDDLE ROAD,CHAO Free format text: FORMER NAME OR ADDRESS: SILICONE SUB FACTORY, BEIJING SECOND CHEMICAL FACTORY, BEIJING CITY |
|
| CP03 | Change of name, title or address |
Patentee address after: Beijing city Chaoyang District South Park Road 113 building 505 room Patentee address before: Beijing Beijing chemical two factory organosilicon branch factory |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |