CN203963019U - High-temperature-resistant sealing structure of cover skirt cylinder - Google Patents
High-temperature-resistant sealing structure of cover skirt cylinder Download PDFInfo
- Publication number
- CN203963019U CN203963019U CN201420364792.6U CN201420364792U CN203963019U CN 203963019 U CN203963019 U CN 203963019U CN 201420364792 U CN201420364792 U CN 201420364792U CN 203963019 U CN203963019 U CN 203963019U
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- CN
- China
- Prior art keywords
- high temperature
- seal
- guide sleeve
- sealing
- temperature
- 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 40
- 210000004907 gland Anatomy 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model discloses a high temperature resistant sealing structure of a cover skirt cylinder, which comprises a piston rod, a gland, a shaft sleeve for the rod, a high temperature universal plug seal and a high temperature stet seal, wherein the shaft sleeve for the rod is arranged at the front part of the sealing structure; the rear side of the gland is provided with a guide sleeve, the inner peripheral wall of the guide sleeve is provided with a groove, and the high-temperature Stent seal is connected in the groove; the high-temperature flooding plug seal is positioned at the rear side of the guide sleeve. The utility model discloses the steve that will arrange the front end originally seals places the rear end to this structure of uide bushing has been added, causes the sealing member to damage when sealing in order to prevent the general stopper of assembly. The flooding plug seal forms a first seal, and the combination of the steckel seal and the sealing ring on the guide sleeve forms a second seal, so that leakage can be effectively prevented. The front end adopts the high-temperature double-lip dust ring, which can prevent dust from entering the cylinder body and can also effectively prevent hydraulic oil from leaking outside. The structure is mainly suitable for occasions with high-temperature heating sources at the front ends of the cylinder heads and can seriously affect the sealing service life.
Description
Technical field
The utility model belongs to machinery manufacturing technology field, relates to a kind of overskirt cylinder high temperature resistant sealing structure.
Background technique
At present, overskirt cylinder series product are widely used in making steel in industry, due to its special high-temperature work environment, cause Sealing aging speed too fast, and significantly reduce working life.Even if installed magnetism servo-electric motor water-cooling additional in overskirt cylinder cylinder body outside, still can not effectively solve this difficult problem.
Find by field investigation: heating source mainly concentrates on overskirt cylinder cylinder head position, be positioned under the hot environment of this special envelope long term exposure more than 200 DEG C of cylinder head front end, even if select resistant to elevated temperatures fluorine rubber to be also difficult to bear so high operating temperature, in sealing system, conventionally this special envelope was positioned over to cylinder head front end in the past, in the middle of this special envelope and general plug envelope, added axle sleeve.Such sealing configuration can only use two months under worst hot case just to be needed to change.
Summary of the invention
The utility model, for above-mentioned problems of the prior art, provides a kind of overskirt cylinder high temperature resistant sealing structure.
The utility model for addressing this problem taked technological scheme is:
Overskirt cylinder high temperature resistant sealing structure of the present utility model, comprises piston rod, gland, axle sleeve, the general plug envelope of high temperature and this special envelope of high temperature for bar, and bar is arranged on the front portion of sealing structure with axle sleeve, between piston rod and gland; The rear side of gland is provided with guide sleeve, on the inner circle wall of guide sleeve, is formed with groove, and this special envelope of high temperature is connected in groove, and on the periphery wall of guide sleeve, this special envelope of correspondence and high temperature is provided with high-temperature seal ring; The general plug envelope of high temperature is positioned at the rear side of guide sleeve.
Described bar is provided with high temperature double-lip dust ring with the front of axle sleeve, and high temperature double-lip dust ring is connected between gland and piston rod.
Advantage of the present utility model and good effect are:
Overskirt cylinder high temperature resistant sealing structure of the present utility model, is placed on rear end by this special envelope that is originally placed in front end, and has added this structure of guide sleeve, to prevent causing Sealing to damage while assembling general plug envelope.General plug envelope self has formed first sealing, and this special envelope on guide sleeve has formed second sealing with the combination of seal ring and can effectively prevent the generation leaking outside.Front end adopts high temperature double-lip dust ring, both can prevent from that dust from entering in cylinder body also can effectively prevent that hydraulic oil from leaking outside.This structure is mainly applicable to cylinder head front end high temperature heating source, can be to producing the occasion having a strong impact on sealing life.Sealing configuration in the past can only use two months and just needs under worst hot case to be changed, and sealing configuration of the present utility model can, by more than this time lengthening to one year, in the working life of greatly having improved overskirt cylinder, reduce maintenance cost.
Brief description of the drawings
Fig. 1 is the sectional view of overskirt cylinder high temperature resistant sealing structure of the present utility model;
Fig. 2 is the stereogram of overskirt cylinder high temperature resistant sealing structure of the present utility model;
Critical piece label declaration in figure:
1: piston rod 2: gland
3: axle sleeve 4 for bar: high temperature double-lip dust ring
5: the general plug envelope 6 of high temperature: guide sleeve
7: back-up ring 8: this special envelope of high temperature
9: high-temperature seal ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further, in accompanying drawing, parts same as the prior art have adopted identical label.Following each embodiment is only not limitation of the utility model for the utility model is described.
Fig. 1 is the sectional view of overskirt cylinder high temperature resistant sealing structure of the present utility model; Fig. 2 is the stereogram of overskirt cylinder high temperature resistant sealing structure of the present utility model.As depicted in figs. 1 and 2, overskirt cylinder high temperature resistant sealing structure of the present utility model, comprise piston rod 1, gland 2, axle sleeve 3, the general plug envelope 5 of high temperature and this special envelope 8 of high temperature for bar, bar is arranged on nearly cylinder head one end, front portion of sealing structure with axle sleeve 3, between piston rod 1 and gland 2.Bar is provided with high temperature double-lip dust ring 4 with the front of axle sleeve 3, and high temperature double-lip dust ring 4 is connected between gland 2 and piston rod 1.
The rear side of gland 2 is provided with guide sleeve 6, on the inner circle wall of guide sleeve 6, is formed with groove, and this special envelope 8 of high temperature is connected in groove, and on the periphery wall of guide sleeve 6, this special envelope 8 of correspondence and high temperature is provided with high-temperature seal ring 9, and the front side of high-temperature seal ring is provided with back-up ring 7.The general plug envelope 5 of high temperature is positioned at the rear side of guide sleeve 6.
The installation method of overskirt cylinder high temperature resistant sealing structure of the present utility model is as follows:
First pack general high temperature plug envelope 5 into cylinder head, afterwards this spy 8 of high-temperature seal ring 9, back-up ring 7 and high temperature is encapsulated into guide sleeve 6, then the guide sleeve assembling 6 is packed in cylinder head as an entirety.Barre packs gland 2 into axle sleeve 3 and high temperature double-lip dust ring 4, afterwards gland 2 is installed on cylinder head and is tightened, and confirms to install errorless rear boring, dress junction of the edges of two sheets of paper screw.
The working principle of overskirt cylinder high temperature resistant sealing structure of the present utility model is as follows:
The primary seal of this structure is the general plug envelope of high temperature, and secondary sealing is this special envelope of high temperature, and both frictional force are all lower, can not cause " hydraulic pressure is creeped ", and be all applicable to high pressure, most importantly both heat-resisting abilities are all very strong, wherein the maximum operation (service) temperature of the general plug envelope of high temperature can reach 260 DEG C.Front end adopts high temperature double-lip dust ring, both can prevent from that dust from entering in cylinder body also can effectively prevent that hydraulic oil from leaking outside.
In order to adapt to the special working environment of overskirt cylinder, this special envelope that is placed in cylinder head front end is originally placed on to rear end, and has added this structure of guide sleeve, to prevent causing Sealing to damage while assembling general plug envelope.So, general plug envelope self has formed first sealing, and this special envelope on guide sleeve has formed second sealing with the combination of seal ring and can effectively prevent the generation leaking outside.This structure is mainly applicable to cylinder head front end high temperature heating source, can be to producing the occasion having a strong impact on sealing life.Sealing configuration in the past can only use two months and just needs under worst hot case to be changed, and sealing configuration of the present utility model can, by more than this time lengthening to one year, in the working life of greatly having improved overskirt cylinder, reduce maintenance cost.
Claims (2)
1. an overskirt cylinder high temperature resistant sealing structure, comprise piston rod (1), gland (2), this special envelope (8) of axle sleeve (3), the general plug envelope of high temperature (5) and high temperature for bar, it is characterized in that: axle sleeve for bar (3) is arranged on the front portion of sealing structure, be positioned between piston rod (1) and gland (2); The rear side of gland (2) is provided with guide sleeve (6), on the inner circle wall of guide sleeve (6), is formed with groove, and this special envelope (8) of high temperature is connected in groove, and on the periphery wall of guide sleeve (6), this special envelope of correspondence and high temperature is provided with high-temperature seal ring (9); The general plug envelope of high temperature (5) is positioned at the rear side of guide sleeve (6).
2. overskirt cylinder high temperature resistant sealing structure according to claim 1, is characterized in that: the front of axle sleeve for bar (3) is provided with high temperature double-lip dust ring (4), high temperature double-lip dust ring (4) is connected between gland (2) and piston rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364792.6U CN203963019U (en) | 2014-07-03 | 2014-07-03 | High-temperature-resistant sealing structure of cover skirt cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364792.6U CN203963019U (en) | 2014-07-03 | 2014-07-03 | High-temperature-resistant sealing structure of cover skirt cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963019U true CN203963019U (en) | 2014-11-26 |
Family
ID=51923602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364792.6U Expired - Fee Related CN203963019U (en) | 2014-07-03 | 2014-07-03 | High-temperature-resistant sealing structure of cover skirt cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963019U (en) |
-
2014
- 2014-07-03 CN CN201420364792.6U patent/CN203963019U/en not_active Expired - Fee Related
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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: 20141126 Termination date: 20160703 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |