CN207316068U - A kind of hydraulic cylinder sealing device - Google Patents
A kind of hydraulic cylinder sealing device Download PDFInfo
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- CN207316068U CN207316068U CN201721032175.6U CN201721032175U CN207316068U CN 207316068 U CN207316068 U CN 207316068U CN 201721032175 U CN201721032175 U CN 201721032175U CN 207316068 U CN207316068 U CN 207316068U
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- ring
- sealed base
- compression
- seal
- hydraulic cylinder
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Abstract
A kind of hydraulic cylinder sealing device, including sealed base（1）, it is characterised in that：The sealed base（1）Annular groove is offered on the excircle of upper end（2）, annular groove（2）Bottom be provided with support ring（3）, support ring（3）Upper end be stacked with multiple V-seal rings successively（4）, V-seal ring（4）Upper end be provided with compression ring（5）, compression ring（5）Upper end be provided with compression plate（7）, compression ring（5）Upper end and compression plate（7）Between be provided with disk spring（6）, compression plate（7）With sealed base（1）Between pass through fastener connection fix, the utility model is rational in infrastructure, it is easy for installation, V-seal ring being capable of compensation sealing gap in time under the extruding of disk spring, the multiple V-seal rings stacked are equivalent to multiple-sealed structure, the technical barrier of more than 250 degrees Celsius high temperature can not be born by efficiently solving conventional hydraulic seal, and sealing effect is ideal, service life length.
Description
Technical field
A kind of sealing device, more particularly to a kind of hydraulic cylinder sealing device are the utility model is related to, belongs to hydraulic packing
Technical field of structures.
Background technology
Hydraulic cylinder works temperature in the equipment such as the coiling machine of existing silicon sheet plant, uncoiler is very high, is taken producing the high trade mark
During to silicon steel, coiling machine, the operating temperature of uncoiler are up to 250 degrees Celsius, at this moment the hydraulic cylinder piston sealing of hydraulic jaw
Frequent oil leak situation occurs.Due to traditional hydraulic cylinder sealing element, usage time is shorter at these high temperatures, traditional liquid
Quickly, service life is very short for the aging of cylinder pressure seal, the speed being broken, and frequently results in seal failure, hydraulic oil exudation, causes liquid
Cylinder pressure can not work normally, and lack a kind of simple and effective high-temperature and high-presure resistent hydraulic cylinder sealing device of energy always to solve
State technical barrier.
The content of the invention
The purpose of this utility model is to be directed to conventional hydraulic seal not bearing more than 250 degrees Celsius of high temperature, is used
Service life is very short, frequently results in hydraulic cylinder sealing failure, hydraulic oil exudation, the defects of causing hydraulic cylinder not work normally and not
Foot, there is provided it is a kind of rational in infrastructure, it is easy for installation, more than 250 degrees Celsius of high temperature, service life length, to hydraulic cylinder can be born
A kind of good hydraulic cylinder sealing device of sealing effect.
To achieve the above object, the technical solution of the utility model is：A kind of hydraulic cylinder sealing device, including it is close
Back cover seat, offers annular groove on the excircle of the sealed base upper end, the bottom of annular groove is provided with support ring, annular groove
Inside and be stacked with multiple V-seal rings successively positioned at the upper end of support ring, the upper end setting of the V-seal ring after stacking
There is compression ring, the upper end of compression ring is provided with compression plate, disk spring is provided between the upper end of compression ring and compression plate, compresses
Connected and fixed by fastener between disk and sealed base.
The upper end center position of the sealed base and compression plate offers screw mounting hole, the screw on sealed base
Internal thread is offered on the inner wall of mounting hole, compression plate is installed in screw mounting hole by sunk screw.
The bottom of the V-seal ring is arranged to V-type inclined-plane, and the upper end of V-seal ring offers V-type groove, V-seal
Ring is made of polytetrafluoroethylene (PTFE), and the outside diameter of V-seal ring is more than outside diameter and the hydraulic cavities port of sealed base
Internal diameter.
The bottom end face of the support ring is plane, and the upper end of support ring offers and the V-type inclined-plane phase on V-seal ring
Corresponding V-type groove.
The upper surface of the compression ring is plane, and the bottom of compression ring offers opposite with the V-type groove on V-seal ring
The V-type inclined-plane answered, the angle on compression ring bottom V-type inclined-plane are more than or equal to the angle of V-seal ring upper end V-type groove.
The outside diameter of the support ring and compression ring is respectively less than or the outside diameter equal to sealed base.
Ring type seal is provided between the sealed base and compression plate, sunk screw tightens bottom and the compression plate in face
Between be provided with combined seal ring.
The bottom centre of the sealed base is provided with removal hole, and internal thread, the diameter of removal hole are provided with removal hole
Less than the diameter of screw mounting hole, and removal hole connects with screw mounting hole.
The beneficial effects of the utility model are：
1st, the utility model is disposed with support ring, multiple V-seal rings stacked and pressure in the bottom of annular groove
Tight ring, while elastic compression is carried out to V-seal ring using disk spring, V-seal ring is being subject to used by V-seal ring
Outer edge opens after extruding, has reached good sealing effect, and can bear more than 250 degrees Celsius of high temperature, effectively solution
Conventional hydraulic of having determined seal can not bear the technical barrier of more than 250 degrees Celsius of high temperature.
2nd, the utility model is rational in infrastructure, easy for installation, and V-seal ring can bear more than 250 degrees Celsius of high temperature, V
Type sealing ring under the extruding of disk spring can compensation sealing gap in time, the multiple V-seal rings stacked are equivalent to multiple tracks
Sealing structure, sealing effect is ideal, service life length, good to the sealing effect of hydraulic cylinder.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model annular groove.
Fig. 2 is the structure diagram of the utility model.
Fig. 3 is the structure diagram after the utility model installation sunk screw.
Fig. 4 is the schematic diagram of the utility model V-seal ring.
Fig. 5 is the structure diagram of the utility model disk spring.
In figure：Sealed base 1, annular groove 2, support ring 3, V-seal ring 4, compression ring 5, disk spring 6, compression plate 7,
Screw mounting hole 8, sunk screw 9, removal hole 10, ring type seal 11, combined seal ring 12.
Embodiment
The utility model is described in further detail below in conjunction with brief description of the drawings and embodiment.
Referring to attached drawing 1 to Fig. 5, a kind of hydraulic cylinder sealing device of the utility model, including sealed base 1, its feature
It is：Annular groove 2 is offered on the excircle of 1 upper end of sealed base, the bottom of annular groove 2 is provided with support ring 3, annular
The inside of groove 2 and be stacked with multiple V-seal rings 4 successively positioned at the upper end of support ring 3, the V-seal ring 4 after stacking it is upper
End is provided with compression ring 5, and the upper end of compression ring 5 is provided with compression plate 7, dish is provided between the upper end of compression ring 5 and compression plate 7
Type spring 6, is connected by fastener between compression plate 7 and sealed base 1 and fixed.
The upper end center position of the sealed base 1 and compression plate 7 offers screw mounting hole 8, on sealed base 1
Internal thread is offered on the inner wall of screw mounting hole 8, compression plate 7 is installed in screw mounting hole 8 by sunk screw 9.
The bottom of the V-seal ring 4 is arranged to V-type inclined-plane, and the upper end of V-seal ring 4 offers V-type groove, and V-type is close
Seal ring 4 is made of polytetrafluoroethylene (PTFE), and the outside diameter of V-seal ring 4 is more than the outside diameter and hydraulic cavities of sealed base 1
The internal diameter of port.
The bottom end face of the support ring 3 is plane, and the upper end of support ring 3 offers oblique with the V-type on V-seal ring 4
The corresponding V-type groove in face.
The upper surface of the compression ring 5 is plane, and the bottom of compression ring 5 offers and the V-type groove on V-seal ring 4
Corresponding V-type inclined-plane, the angle on 5 bottom V-type inclined-plane of compression ring are more than or equal to the angle of 4 upper end V-type groove of V-seal ring.
The outside diameter of the support ring 3 and compression ring 5 is respectively less than or the outside diameter equal to sealed base 1.
Be provided with ring type seal 11 between the sealed base 1 and compression plate 7, sunk screw 9 tighten the bottom in face with
Combined seal ring 12 is provided between compression plate 7.
The bottom centre of the sealed base 1 is provided with removal hole 10, and internal thread, removal hole 10 are provided with removal hole 10
Diameter be less than the diameter of screw mounting hole 8, and removal hole 10 connects with screw mounting hole 8.
As shown in Figure 1, the position that hydraulic cavities port needs to seal for the outer end of hydraulic cylinder, sealed base 1 is as master
Body component is arranged on hydraulic cavities port, in order to reach preferable sealing effect, and can bear the height more than 250 degrees Celsius
Temperature and hyperbaric environment, the utility model improve and optimize sealing structure.Ring is offered on the excircle of 1 upper end of sealed base
Shape groove 2, the depth of annular groove 2 are less than the height of sealed base 1, and the bottom of annular groove 2 is provided with support ring 3.The bottom of support ring 3
End surface is plane, and the upper end of support ring 3 offers and the corresponding V-type groove in V-type inclined-plane on V-seal ring 4, support ring
3 outside diameter is less than or equal to the outside diameter of sealed base 1.
The inside of annular groove 2 and multiple V-seal rings 4, V-seal ring 4 are stacked with successively positioned at the upper end of support ring 3
Bottom be arranged to V-type inclined-plane, the upper end of V-seal ring 4 offers V-type groove.In order to be resistant to more than 250 degrees Celsius
High temperature, the V-seal ring 4 of the utility model are made of polytetrafluoroethylene (PTFE), and sealing ring is more than 250 made of polytetrafluoroethylene (PTFE)
Degree Celsius hot environment in still have preferable elastic, non-aging, sealing effect is good.V-seal ring 4 is set using V-type
The purpose of meter is that, when the top V-type groove of V-seal ring 4 is pressurized, the inner ring of V-seal ring 4 can inwardly open, V-seal
The outer ring of ring 4 can be also flared out at the same time, can just reach good sealing effect after applying certain pressure.In addition annular groove
The 2 V-seal rings 4 stacked successively from top to bottom can be independently after compression open seals, equivalent to multiple-sealed
Structure, sealing effect are ideal.The outside diameter of V-seal ring 4 is more than outside diameter and the hydraulic cavities end of sealed base 1
The internal diameter of mouth, the annular diameters of V-seal ring 4 are more than the internal diameter of annular groove 2.
The upper end of V-seal ring 4 after stacking is provided with compression ring 5, and the upper surface of compression ring 5 is plane, compression ring 5
Bottom is offered to be more than with the corresponding V-type inclined-plane of V-type groove on V-seal ring 4, the angle on 5 bottom V-type inclined-plane of compression ring
Equal to the angle of 4 upper end V-type groove of V-seal ring, compression ring 5 is pressed by the V-type inclined-plane of bottom to V-seal ring 4 so that
V-seal ring 4 somewhat opens, to reach good sealing effect.The outside diameter of compression ring 5 is less than or equal to sealed base 1
Outside diameter, in order to avoid the excessive sealing to hydraulic cavities port of the diameter of compression ring 5 adversely affects.
The upper end of compression ring 5 is provided with compression plate 7, and disk spring 6 is provided between the upper end of compression ring 5 and compression plate 7,
Disk spring 6 is arranged to one or symmetrical above and below is provided with two.The elastic gap and elastic force of each disk spring 6 can
To make choice as needed, the thickness of disk spring 6 is generally 3 millimeters -6 millimeters, and elastic force is 1000 Ns -3000 Ns.It is dish-like
Spring 6 is used cooperatively with V-seal ring 4, and disk spring 6 provides lasting resilient pressing force, V-seal ring for V-seal ring 4
4 under the extruding of disk spring 6 can compensation sealing gap in time, reached good sealing effect.Sealed base 1 and pressure
The upper end center position of tight disk 7 offers screw mounting hole 8, offered on the inner wall of the screw mounting hole 8 on sealed base 1 in
Screw thread, compression plate 7 are installed in screw mounting hole 8 by sunk screw 9.
In addition, the bottom centre of sealed base 1 is provided with removal hole 10, internal thread, removal hole are provided with removal hole 10
10 diameter is less than the diameter of screw mounting hole 8, and removal hole 10 connects with screw mounting hole 8, and installation and removal are all very
It is convenient.In order to avoid hydraulic oil enters the gap between sealed base 1 and compression plate 7 from removal hole 10, screw mounting hole 8, lead
The gap leakage hydraulic oil between sealed base 1 and compression plate 7 is caused, the utility model is set between sealed base 1 and compression plate 7
Ring type seal 11 is equipped with, sunk screw 9, which is tightened, is provided with combined seal ring 12 between the bottom in face and compression plate 7, reach
Good sealing effect.
Claims (8)
1. a kind of hydraulic cylinder sealing device, including sealed base（1）, it is characterised in that：The sealed base（1）Outside upper end
Annular groove is offered on circumference（2）, annular groove（2）Bottom be provided with support ring（3）, annular groove（2）Inside and positioned at branch
Pushing out ring（3）Upper end be stacked with multiple V-seal rings successively（4）, the V-seal ring after stacking（4）Upper end be provided with pressure
Tight ring（5）, compression ring（5）Upper end be provided with compression plate（7）, compression ring（5）Upper end and compression plate（7）Between be provided with dish
Type spring（6）, compression plate（7）With sealed base（1）Between pass through fastener connection fix.
A kind of 2. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The sealed base（1）And
Compression plate（7）Upper end center position offer screw mounting hole（8）, sealed base（1）On screw mounting hole（8）Inner wall
On offer internal thread, compression plate（7）Pass through sunk screw（9）Installed in screw mounting hole（8）It is interior.
A kind of 3. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The V-seal ring（4）Bottom
Portion is arranged to V-type inclined-plane, V-seal ring（4）Upper end offer V-type groove, V-seal ring（4）Using polytetrafluoroethylene (PTFE) system
Into V-seal ring（4）Outside diameter be more than sealed base（1）Outside diameter and hydraulic cavities port internal diameter.
A kind of 4. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The support ring（3）Bottom
End face is plane, support ring（3）Upper end offer and V-seal ring（4）On the corresponding V-type groove in V-type inclined-plane.
A kind of 5. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The compression ring（5）Upper end
Face is plane, compression ring（5）Bottom offer and V-seal ring（4）On the corresponding V-type inclined-plane of V-type groove, compression ring
（5）The angle on bottom V-type inclined-plane is more than or equal to V-seal ring（4）The angle of upper end V-type groove.
A kind of 6. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The support ring（3）And pressure
Tight ring（5）Outside diameter be respectively less than or equal to sealed base（1）Outside diameter.
A kind of 7. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The sealed base（1）With pressure
Tight disk（7）Between be provided with ring type seal（11）, sunk screw（9）Tighten bottom and the compression plate in face（7）Between be provided with
Combined seal ring（12）.
A kind of 8. hydraulic cylinder sealing device according to claim 1, it is characterised in that：The sealed base（1）Bottom
Portion is provided centrally with removal hole（10）, removal hole（10）On be provided with internal thread, removal hole（10）Diameter less than screw install
Hole（8）Diameter, and removal hole（10）With screw mounting hole（8）Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721032175.6U CN207316068U (en) | 2017-08-17 | 2017-08-17 | A kind of hydraulic cylinder sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721032175.6U CN207316068U (en) | 2017-08-17 | 2017-08-17 | A kind of hydraulic cylinder sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316068U true CN207316068U (en) | 2018-05-04 |
Family
ID=62432731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721032175.6U Active CN207316068U (en) | 2017-08-17 | 2017-08-17 | A kind of hydraulic cylinder sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316068U (en) |
-
2017
- 2017-08-17 CN CN201721032175.6U patent/CN207316068U/en active Active
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