CN204628565U - A kind of novel piston combination seal - Google Patents
A kind of novel piston combination seal Download PDFInfo
- Publication number
- CN204628565U CN204628565U CN201520286469.6U CN201520286469U CN204628565U CN 204628565 U CN204628565 U CN 204628565U CN 201520286469 U CN201520286469 U CN 201520286469U CN 204628565 U CN204628565 U CN 204628565U
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- CN
- China
- Prior art keywords
- sealing
- cylinder
- piston
- combination seal
- seal
- 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 claims abstract description 33
- 239000004809 Teflon Substances 0.000 claims abstract description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 12
- 239000004814 polyurethane Substances 0.000 claims abstract description 12
- 230000001788 irregular Effects 0.000 claims abstract description 6
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002457 bidirectional Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 230000003628 erosive Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
A kind of novel piston combination seal, the basis of traditional piston combination seal is improved, by the arc contact surface of the Polyurethane seals on original top, be transformed into the protuberance contacts of sealing member of modified Teflon, be provided with groove in sealing member of modified Teflon simultaneously, embedded in irregular Polyurethane seals, thus increase surface of contact.The utility model play phenomenon that piston rod produces when cylinder efficient is eliminated, and the abnormal sound that sealing and cylinder body produce also is eliminated, and also extends the working life of equipment simultaneously.
Description
Technical field
The utility model relates to a kind of novel piston combination seal, is mainly used in the gap between sealed cylinder piston and cylinder barrel, prevents from leaking in hydraulic oil.
Background technique
In oil cylinder design, sealing system generally includes rod seal and piston seal.Piston seal combination is mounted on piston, and Main Function is the gap between packed-piston and cylinder barrel, prevents from leaking in hydraulic oil.Piston seal is the primary seal in oil hydraulic cylinder, bidirectional bearing, is one of oil hydraulic cylinder main Sealing that can bear force value.Major requirement for piston seal has good sealing effect, and under having state of rest, pressurize is effective, and in movement process, bearing capacity is strong, and anti-extrusion, friction factor is little, long service life etc.The correct type selecting of Sealing and collocation are the key factors determining sealing system performance.
Because use medium mostly to be aircraft fluid in oil cylinder, its viscosity is lower, and piston seal traditional at present as shown in Figure 1, there will be piston rod when cylinder efficient and produce play, sealing and cylinder body produce abnormal sound phenomenon, and sealing effect is affected simultaneously, reduces the working life of product.
Model utility content
The purpose of this utility model is exactly to overcome the above problems, a kind of novel piston combination seal is provided, transform the form construction design of traditional piston combination seal, the play phenomenon that during solution cylinder efficient, piston rod occurs, eliminates the abnormal sound produced between sealing and cylinder body.
The technical solution of the utility model is achieved in that a kind of novel piston combination seal, comprises the support ring of ring-type, is inserted into the elastomer of support ring end opening, is inserted into support ring interior Sealing suitable for reading; Be characterized in: described interior Sealing suitable for reading is sealing member of modified Teflon, the upper surface of sealing member of modified Teflon is concave plane shape, be provided with groove on the top of sealing member of modified Teflon, groove is built with the Polyurethane seals of irregular surface.
The utility model improves on the basis of traditional piston combination seal, by the arc contact surface of the Polyurethane seals on original top, be transformed into the protuberance contacts of sealing member of modified Teflon, be provided with groove in sealing member of modified Teflon simultaneously, embedded in irregular Polyurethane seals, thus increase surface of contact, this enhance friction, after using the piston combination seal after improving, the play phenomenon that during cylinder efficient, piston rod produces is eliminated, the abnormal sound that sealing and cylinder body produce also is eliminated, and also extends the working life of equipment simultaneously.Have installation more convenient, steadiness is stronger, the special seal effects such as resistance to erosion leakage proof; Extend working life and the sealing effect of cylinder part.
Now the utility model is described in further detail in conjunction with the accompanying drawings and embodiments.
Accompanying drawing explanation
Fig. 1 is existing piston combination seal.
Fig. 2 is structural representation of the present utility model.
In figure: 1---Polyurethane seals; 2---sealing member of modified Teflon; 3---support ring; 4---elastomer.
Embodiment
The utility model is on the basis of traditional oil cylinder piston combination seal, controls by changing its composite structure to realize the play that piston rod occurs in cylinder efficient.Piston in combination Sealing (as shown in Figure 1) in the past comprise ring-type support ring 3, be inserted into support ring 3 end opening elastomer 4, be inserted into support ring 3 suitable for reading in Polyurethane seals 1 form, and Polyurethane seals 1 and the surface of contact of oil cylinder medium are relative mellow and full cambered surfaces, in real work, in oil cylinder, use medium mostly to be aircraft fluid, its viscosity is lower, there will be piston rod when cylinder efficient and produce play, sealing and cylinder body produce abnormal sound phenomenon, sealing effect is affected simultaneously, reduces the working life of product.
The structure of the utility model to original seal combination is improved (as shown in Figure 2), by the Polyurethane seals 1 on original top, replace to the combination by sealing member of modified Teflon 2 and Polyurethane seals sealing 1, first, in the design of sealing member of modified Teflon 2, what we adopted is irregular contact face, add denation, be provided with groove in centre simultaneously, then Polyurethane seals 1 is also designed to irregular shape, load in groove, this transformation effectively inhibits the play of piston rod, thus achieve the abnormal sound eliminated and produce between sealing and cylinder body.
Claims (1)
1. a novel piston combination seal, comprises the support ring (3) of ring-type, is inserted into the elastomer (4) of support ring (3) end opening; Be inserted into support ring (3) interior Sealing suitable for reading; It is characterized in that: described interior Sealing suitable for reading is sealing member of modified Teflon (2), the upper surface of sealing member of modified Teflon (2) is concave plane shape, be provided with groove on the top of sealing member of modified Teflon (2), groove is built with the Polyurethane seals (1) of irregular surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286469.6U CN204628565U (en) | 2015-05-05 | 2015-05-05 | A kind of novel piston combination seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286469.6U CN204628565U (en) | 2015-05-05 | 2015-05-05 | A kind of novel piston combination seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204628565U true CN204628565U (en) | 2015-09-09 |
Family
ID=54047598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520286469.6U Expired - Fee Related CN204628565U (en) | 2015-05-05 | 2015-05-05 | A kind of novel piston combination seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204628565U (en) |
-
2015
- 2015-05-05 CN CN201520286469.6U patent/CN204628565U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20170505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |