CN205689752U - A kind of PGA type piston combined seal ring - Google Patents
A kind of PGA type piston combined seal ring Download PDFInfo
- Publication number
- CN205689752U CN205689752U CN201620582087.2U CN201620582087U CN205689752U CN 205689752 U CN205689752 U CN 205689752U CN 201620582087 U CN201620582087 U CN 201620582087U CN 205689752 U CN205689752 U CN 205689752U
- Authority
- CN
- China
- Prior art keywords
- section
- seal ring
- type piston
- circle body
- depression
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of PGA type piston combined seal ring, including sealing circle body, the cross section sealing circle body is trapezoid cross section, and trapezoid cross section is up-narrow and down-wide, seal drift angle inside and outside circle body and be provided with the arc groove of depression, the degree of depth is sealing ring body thickness the 1/5 to 1/4 of arc groove depression.This PGA type piston combined seal ring has relatively low activity frictional force and the feature of length in service life, sealing ring is designed as trapezoid cross section and replaces original square-section, and be designed to the arc groove of depression at corner position and replace original chamfering, increase the service life and effectively reduce the frictional force of sealing ring and cylinder barrel, under oil pressure effect, seal ring with outer side is in close contact with inner wall of cylinder all the time, and service life extends.
Description
Technical field
This utility model relates to the technical field of the piston combined seal ring that a kind of plastic cement seals, and particularly relates to a kind of increasing
Strong sealing effectiveness, increase the service life and effectively reduce the PGA type piston combined seal ring of sealing member and cylinder barrel frictional force.
Background technology
At present, in hydraulic jack seals, Combined seal ring of piston is as a kind of ring structure, and it is in high pressure and low pressure
Good sealing function can be played under operating pressure, but its service life is undesirable, a kind of seal failure the most more typically
Mode is exactly because the frictional force between cylinder barrel and sealing member causes greatly sealing effectiveness general, causes seal life to contract simultaneously
Short.It addition, under oil pressure effect, the cylindrical side of sealing member is in close contact the most all the time with the inwall of cylinder barrel.Prior art
PGA type piston combined seal ring, as in figure 2 it is shown, this body section of sealing ring 3 is square-section, the drift angle of sealing ring is provided with
Chamfering 4, under oil pressure effect, the cylindrical side of sealing ring is in close contact the most all the time with the inwall of cylinder barrel, and sealing ring and cylinder
The frictional force of cylinder is big, and sealing effectiveness is general, and service life is short.
Summary of the invention
The purpose of this utility model is the shortcoming in order to overcome above-mentioned prior art, it is provided that a kind of PGA type piston combination
Sealing ring, this PGA type piston combined seal ring has relatively low activity frictional force and the feature of length in service life, and sealing ring sets
It is calculated as trapezoid cross section and replaces original square-section, and the arc groove being designed to cave at corner position replaces original chamfering,
Increase the service life and effectively reduce the frictional force of sealing ring and cylinder barrel, under oil pressure effect, seal ring with outer side all the time with
Inner wall of cylinder is in close contact, and service life extends.
This utility model solves its technical problem and be the technical scheme is that a kind of PGA type piston combined seal ring,
Including sealing circle body, the cross section sealing circle body is trapezoid cross section, and trapezoid cross section is up-narrow and down-wide, seals drift angle inside and outside circle body
It is provided with the arc groove of depression, the degree of depth is sealing ring body thickness the 1/5 to 1/4 of arc groove depression.
Further, the described waist of sealing circle body trapezoid cross section and the angle on base are 70-80 °.
In sum, PGA type piston combined seal ring of the present utility model has relatively low activity frictional force and use
The feature of life-span length, sealing ring is designed as trapezoid cross section and replaces original square-section, and is designed to depression at corner position
Arc groove replaces original chamfering, increases the service life and effectively reduces the frictional force of sealing ring and cylinder barrel, under oil pressure effect,
Seal ring with outer side is in close contact with inner wall of cylinder all the time, and service life extends.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of a kind of PGA type piston combined seal ring of this utility model embodiment 1；
Fig. 2 is the structure sectional view of the PGA type piston combined seal ring of prior art.
Detailed description of the invention
Embodiment 1
A kind of PGA type piston combined seal ring described by the present embodiment 1, as it is shown in figure 1, include sealing circle body 1, close
The cross section of seal body is trapezoid cross section, and trapezoid cross section is up-narrow and down-wide, seals drift angle inside and outside circle body and is provided with the circular arc of depression
Groove 2, the degree of depth is sealing ring body thickness the 1/5 of arc groove depression.
The waist of this sealing circle body trapezoid cross section and the angle on base are 75 °.
The above, be only preferred embodiment of the present utility model, not make any to structure of the present utility model
Pro forma restriction.Every according to technical spirit of the present utility model, above example is made any simple modification, equivalent
Change and modification, all still fall within the range of the technical solution of the utility model.
Claims (2)
1. a PGA type piston combined seal ring, including sealing circle body, it is characterised in that the cross section sealing circle body is trapezoidal
Cross section, trapezoid cross section is up-narrow and down-wide, seals drift angle inside and outside circle body and is provided with the arc groove of depression, the degree of depth of arc groove depression
For sealing ring body thickness 1/5 to 1/4.
A kind of PGA type piston combined seal ring the most according to claim 1, it is characterised in that described sealing circle body ladder
The waist of tee section and the angle on base are 70-80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582087.2U CN205689752U (en) | 2016-06-16 | 2016-06-16 | A kind of PGA type piston combined seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620582087.2U CN205689752U (en) | 2016-06-16 | 2016-06-16 | A kind of PGA type piston combined seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205689752U true CN205689752U (en) | 2016-11-16 |
Family
ID=57427723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620582087.2U Expired - Fee Related CN205689752U (en) | 2016-06-16 | 2016-06-16 | A kind of PGA type piston combined seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205689752U (en) |
-
2016
- 2016-06-16 CN CN201620582087.2U patent/CN205689752U/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: 20161116 Termination date: 20200616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |