CN204921997U - Novel piston rod seal assembly - Google Patents
Novel piston rod seal assembly Download PDFInfo
- Publication number
- CN204921997U CN204921997U CN201520709265.9U CN201520709265U CN204921997U CN 204921997 U CN204921997 U CN 204921997U CN 201520709265 U CN201520709265 U CN 201520709265U CN 204921997 U CN204921997 U CN 204921997U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- hydraulic cylinder
- oil hydraulic
- elastic packing
- black box
- 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
- 238000012856 packing Methods 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 32
- 239000000428 dust Substances 0.000 claims description 31
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Actuator (AREA)
Abstract
Novel piston rod seal assembly, including the pneumatic cylinder, be located the piston of pneumatic cylinder, fix the piston rod on the piston, this novel piston rod seal assembly is still including setting up the elasticity seal assembly between pneumatic cylinder and piston rod, elasticity seal assembly is and is provided with the primary seal lip on ring form and this elasticity seal assembly and the piston rod complex face, the secondary seal lip, ripple portion, this primary seal lip is located elasticity seal assembly and goes up the position that is close to the piston and replace in the piston rod, the secondary seal lip is kept away from the position of piston and is replaced in the piston rod on being located elasticity seal assembly, this ripple position is between primary seal lip and secondary seal lip. The utility model discloses have the primary seal lip and the secondary seal lip that contact with the piston rod, still have ripple portion between primary seal lip and the secondary seal lip, play the effect of strengthening sealed effect. Additionally, the utility model discloses still have the oil storage annular, avoided piston rod and elasticity seal assembly, taken place the dry friction between dustproof.
Description
Technical field
The utility model relates to a kind of annex of hydraulic machinery, especially relates to a kind of Novel piston rod black box.
Background technique
At present, the mode that in Fluid Sealing machinery, piston rod is snug fit at oil hydraulic cylinder is very general technological means already.But the sealing problem between oil hydraulic cylinder and piston rod is the difficult problem in this field always, such as, seal ring of the prior art only has one sealing lip, and its sealing effect is poor, will easily leak once run into the larger situation of oil pressure load.In addition, Sealing of the prior art does not hide oily device, as easy as rolling off a logly between Sealing and piston rod occurs dry friction, so, is obviously when piston rod slides to the damage of Sealing.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of Novel piston rod black box, in order to improve the sealing effect of elastic packing assembly, reduces oil liquid leakage.
For achieving the above object, the utility model adopts following technological scheme:
Novel piston rod black box, comprise oil hydraulic cylinder, be positioned at the piston of oil hydraulic cylinder, be fixed on the piston rod on piston, it is characterized in that: this Novel piston rod black box also comprises the elastic packing assembly be arranged between oil hydraulic cylinder and piston rod, elastic packing assembly is circular and the face that coordinates with piston rod of this elastic packing assembly is provided with primary seal lip, secondary sealing lip, corrugated part, this primary seal lip is positioned at the position of close piston on elastic packing assembly and is resisted against piston rod, secondary sealing lip to be positioned on elastic packing assembly away from the position of piston and to be resisted against piston rod, this corrugated regions is between primary seal lip and secondary sealing lip.
Preferably, this oil hydraulic cylinder has a cylinder holes of walking for piston rod; This Novel piston rod black box also comprises and to be arranged in oil hydraulic cylinder cylinder holes a dust guard outside the oil hydraulic cylinder, and this dust guard is used for the gap between shutoff piston rod and oil hydraulic cylinder.
Preferably, this dust guard offers oil storage annular groove with the one side of plunger rod contacts.
Preferably, this Novel piston rod black box also comprises:
First mounting groove, this first mounting groove is circumferentially opened in the side near piston in oil hydraulic cylinder cylinder holes, and this elastic packing assembly is embedded in the first mounting groove;
Second mounting groove, this second mounting groove is circumferentially opened near outside side in oil hydraulic cylinder cylinder holes, and this dust guard is embedded in the second mounting groove.
Preferably, this dust guard is circular and is provided with the fixed block for preventing this dust guard from deviating from from oil hydraulic cylinder cylinder holes between this dust guard and the second mounting groove.
Preferably, elastic packing assembly is embedded with the squeeze sealing member extended along this elastic packing component internal circumference.
The beneficial effects of the utility model are:
Compared to prior art, Novel piston rod black box of the present utility model, it has and the primary seal lip of plunger rod contacts and secondary sealing lip, also has corrugated part, play the effect of enhanced leaktightness effect between primary seal lip and secondary sealing lip.In addition, dust guard of the present utility model being also provided with oil storage annular groove, for providing the appropriate fluid for lubricating between piston rod and elastic packing assembly, dust guard, avoiding, between piston rod and elastic packing assembly, dust guard, dry friction occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 10, piston rod; 20, oil hydraulic cylinder; 30, elastic packing assembly; 31, primary seal lip; 32, secondary sealing lip; 33, squeeze sealing member; 34, corrugated part; 40, dust guard; 41, fixed block; 42, oil storage annular groove.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
As shown in Figure 1, Novel piston rod black box, comprising: piston (accompanying drawing does not show), oil hydraulic cylinder 20, piston rod 10, elastic packing assembly 30, dust guard 40.
This piston is positioned at oil hydraulic cylinder 20 inside and can slides at oil hydraulic cylinder 20, and piston rod 10 one end is fixed on piston, reciprocating in the cylinder holes that this piston rod 10 can have at oil hydraulic cylinder 20.The cylinder holes of the utility model indication is for the whole passage that piston rod 10 is walked on oil hydraulic cylinder 20 inwall.Elastic packing assembly 30 is arranged between oil hydraulic cylinder 20 and piston rod 10, the face that this elastic packing assembly 30 coordinates with piston rod 10 in circular and this elastic packing assembly 30 is provided with primary seal lip 31, secondary sealing lip 32, corrugated part 34, primary seal lip 31 to be positioned on elastic packing assembly 30 near the position of piston and normal direction be resisted against on the cylindrical of piston rod 10, secondary sealing lip 32 to be positioned on elastic packing assembly 30 away from the position of piston and normal direction be resisted against the cylindrical of piston rod 10, especially, this secondary sealing lip 32 is an obturator in the form of a ring, the cylindrical of secondary sealing lip 32 is embedded in the embedding slot that elastic packing assembly 30 has.This corrugated part 34 is between primary seal lip 31 and secondary sealing lip 32, and this corrugated part 34 is for having the concavo-convex gauffer of corrugated for hindering fluid to overflow toward the outside of oil hydraulic cylinder 20, and this corrugated part 34 also plays the effect with storage fluid simultaneously.
According to aforesaid technological scheme, when piston rod 10 is reciprocating in the cylinder holes of oil hydraulic cylinder 20, elastic packing assembly 30 is squeezed, primary seal lip 31, secondary sealing lip 32 flexibly can be resisted against the cylindrical of piston rod 10, when oil pressure in oil hydraulic cylinder 20 is within rated range, the fluid amount of spillage cylinder pressure 20 outside can reduce by primary seal lip 31, secondary sealing lip 32 as far as possible, corrugated part 34 forms a pressure buffer region, can reduce the kinetic energy of elevated pressures fluid spillage cylinder pressure 20 and weaken fluid toward the outside movement tendency overflowed.Therefore the utility model has tighter sealing effect compared to existing Sealing.This corrugated part 34 also plays the effect with storage fluid simultaneously.
Enter in the cylinder holes of oil hydraulic cylinder 20 to prevent the foreign matters such as the dust outside oil hydraulic cylinder 20; As the preferred scheme of one, the utility model also comprises also comprising and to be arranged in oil hydraulic cylinder 20 cylinder holes a dust guard 40 outside the oil hydraulic cylinder 20, this dust guard 40, for the gap between shutoff piston rod 10 and oil hydraulic cylinder 20, avoids the foreign matters such as dust to enter oil hydraulic cylinder 20 from gap inner.
During in order to prevent relative sliding between piston rod 10 and oil hydraulic cylinder 20, elastic packing assembly 30, both dust guard 40 produce dry friction to piston rod 10, the one side that this dust guard 40 of elastic packing assembly 30 contacts with piston rod 10 offers oil storage annular groove 42, and this oil storage annular groove 42 is for stockpiling appropriate fluid to piston rod 10.
Conveniently elastic packing assembly 30 and dust guard 40 are installed on oil hydraulic cylinder 20, the utility model also comprises: the first mounting groove, the second mounting groove, this first mounting groove is circumferentially opened in the side near piston in oil hydraulic cylinder 20 cylinder holes, and this elastic packing assembly 30 is embedded in the first mounting groove; This second mounting groove is circumferentially opened near outside side in oil hydraulic cylinder cylinder holes, and this dust guard 40 is embedded in the second mounting groove.
Conveniently dust guard 40 is fixed on oil hydraulic cylinder 20, and this dust guard 40 is circular and the fixed block 41 be provided with between this dust guard 40 and second mounting groove for preventing this dust guard 40 from deviating from from oil hydraulic cylinder 20 cylinder holes.
As the preferred scheme of one, this elastic packing assembly 30 is provided with along the squeeze sealing member 33 that extends of this elastic packing assembly 30 internal circumferential ground.This squeeze sealing member 33 can increase the deformation quantity that primary seal lip 31 is protruded to piston rod 10 when being embedded in elastic packing assembly 30, make primary seal lip 31 push up the pressure on top surface of pressure piston rod 10 more greatly, thus enhance sealing effect of the present utility model.
To one skilled in the art, according to technological scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (6)
1. Novel piston rod black box, comprise oil hydraulic cylinder, be positioned at the piston of oil hydraulic cylinder, be fixed on the piston rod on piston, it is characterized in that: this Novel piston rod black box also comprises the elastic packing assembly be arranged between oil hydraulic cylinder and piston rod, elastic packing assembly is circular and the face that coordinates with piston rod of this elastic packing assembly is provided with primary seal lip, secondary sealing lip, corrugated part, this primary seal lip is positioned at the position of close piston on elastic packing assembly and is resisted against piston rod, secondary sealing lip to be positioned on elastic packing assembly away from the position of piston and to be resisted against piston rod, this corrugated regions is between primary seal lip and secondary sealing lip.
2. Novel piston rod black box as claimed in claim 1, is characterized in that: this oil hydraulic cylinder has a cylinder holes of walking for piston rod; This Novel piston rod black box also comprises and to be arranged in oil hydraulic cylinder cylinder holes a dust guard outside the oil hydraulic cylinder, and this dust guard is used for the gap between shutoff piston rod and oil hydraulic cylinder.
3. Novel piston rod black box as claimed in claim 2, is characterized in that: this dust guard offers oil storage annular groove with the one side of plunger rod contacts.
4. Novel piston rod black box as claimed in claim 2, it is characterized in that, this Novel piston rod black box also comprises:
First mounting groove, this first mounting groove is circumferentially opened in the side near piston in oil hydraulic cylinder cylinder holes, and this elastic packing assembly is embedded in the first mounting groove;
Second mounting groove, this second mounting groove is circumferentially opened near outside side in oil hydraulic cylinder cylinder holes, and this dust guard is embedded in the second mounting groove.
5. Novel piston rod black box as claimed in claim 4, is characterized in that: this dust guard is circular and is provided with the fixed block for preventing this dust guard from deviating from from oil hydraulic cylinder cylinder holes between this dust guard and the second mounting groove.
6. Novel piston rod black box as claimed in claim 1, is characterized in that, elastic packing assembly is embedded with the squeeze sealing member extended along this elastic packing component internal circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709265.9U CN204921997U (en) | 2015-09-14 | 2015-09-14 | Novel piston rod seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709265.9U CN204921997U (en) | 2015-09-14 | 2015-09-14 | Novel piston rod seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921997U true CN204921997U (en) | 2015-12-30 |
Family
ID=54971126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520709265.9U Expired - Fee Related CN204921997U (en) | 2015-09-14 | 2015-09-14 | Novel piston rod seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921997U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025749A (en) * | 2018-10-08 | 2018-12-18 | 广州达意隆包装机械股份有限公司 | A kind of cabin door seal structure |
| CN110296175A (en) * | 2019-07-19 | 2019-10-01 | 娄底市中兴液压件有限公司 | Pneumatic cylinder and vehicle |
| CN110509493A (en) * | 2019-09-10 | 2019-11-29 | 张弛 | A kind of injection molding machine anti-oil leakage device |
| CN113803316A (en) * | 2021-08-13 | 2021-12-17 | 郑文斌 | Wear-resisting seal structure of servo hydraulic cylinder |
-
2015
- 2015-09-14 CN CN201520709265.9U patent/CN204921997U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025749A (en) * | 2018-10-08 | 2018-12-18 | 广州达意隆包装机械股份有限公司 | A kind of cabin door seal structure |
| CN110296175A (en) * | 2019-07-19 | 2019-10-01 | 娄底市中兴液压件有限公司 | Pneumatic cylinder and vehicle |
| CN110296175B (en) * | 2019-07-19 | 2024-06-07 | 娄底市中兴液压件有限公司 | Hydro-pneumatic suspension cylinder and vehicle |
| CN110509493A (en) * | 2019-09-10 | 2019-11-29 | 张弛 | A kind of injection molding machine anti-oil leakage device |
| CN110509493B (en) * | 2019-09-10 | 2021-10-29 | 张弛 | Oil leakage prevention device of injection molding machine |
| CN113803316A (en) * | 2021-08-13 | 2021-12-17 | 郑文斌 | Wear-resisting seal structure of servo hydraulic cylinder |
| CN113803316B (en) * | 2021-08-13 | 2024-05-14 | 广州市吉禾自动化设备有限公司 | Wear-resistant sealing structure of servo hydraulic cylinder |
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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: 20151230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |