CN110425284A - A kind of sealing element - Google Patents
A kind of sealing element Download PDFInfo
- Publication number
- CN110425284A CN110425284A CN201910833137.8A CN201910833137A CN110425284A CN 110425284 A CN110425284 A CN 110425284A CN 201910833137 A CN201910833137 A CN 201910833137A CN 110425284 A CN110425284 A CN 110425284A
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing
- wall
- sealing ring
- gas pressure
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 184
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 22
- 230000008859 change Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 238000009826 distribution Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012296 anti-solvent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
- F16J15/3276—Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The present invention provides a kind of sealing element, belongs to technical field of mechanical, including O-ring and sealing ring, O-ring are set on the outer wall of sealing ring, and the outer wall of sealing ring is circumferentially with gas pressure relief slot.Sealing element provided by the invention, it is located between the faying face of two adjacent parts, when equipment works, working media can be flow in the gap of the faying face of sealing element end face two sides, the working media of sealing element barrier seal end face two sides, flow the working media in gap can only in the respective side end clearance in sealing element both ends, the working media squeeze sealing member at sealing element both ends, by the way that gas pressure relief slot is arranged in the periphery of sealing ring, change the sealing surfaces of O-ring with the contact of sealing ring outer wall, reduce the contact area of O-ring and sealing ring, it adjusts O-ring and is distributed with the sealing surfaces of the contact of sealing ring outer wall by the contact pressure of sealing ring when extraneous bias effect, to improve sealing effect.
Description
Technical field
The present invention relates to technical field of mechanical, in particular to a kind of sealing element.
Background technique
Sealing element is the part that sealing is commonly used in mechanical structure, wherein Glais ring is one of sealing element, often
For the sealing of piston, Glais ring is composed of a rubber o-ring and polytetrafluoroethylene (PTFE) circle, and Glais ring is more currently on the market
It is the most obvious with special health sealing ring for import brand, the position of clear ahead is in engineering machinery field, but import lattice
Lay circle is at high cost；In the market there are also the Glais ring of domestic brand, cost is relatively low, but its sealing effect is lower than import Glais ring
Sealing effect.
Summary of the invention
The purpose of the present invention is to provide a kind of sealing elements, and sealing effect is good, and at low cost.
The embodiment of the present invention is achieved in that
The one side of the embodiment of the present invention provides a kind of sealing element comprising O-ring and sealing ring, the O-ring are arranged
On the outer wall of the sealing ring, the outer wall of the sealing ring is circumferentially with gas pressure relief slot.
Optionally, the cross section of the O-ring is rectangle.
Optionally, the end face of the sealing ring is equipped with drain pan.
Optionally, the inner wall of the sealing ring also circumferentially is provided with gas pressure relief slot, and the quantity of the gas pressure relief slot on outer wall is N, and N is big
In zero natural number；The quantity of gas pressure relief slot on the inner wall is N+1, letting out on the gas pressure relief slot and the inner wall on the outer wall
Indent is uniformly arranged respectively, and the gas pressure relief slot on the gas pressure relief slot and the inner wall on the outer wall is staggered.
Optionally, two end faces of the sealing ring are respectively equipped with multiple drain pans, and two end faces is more
A drain pan is staggered.
Optionally, clearance layer is formed between the inner wall of the O-ring and the outer wall of the sealing ring.
Optionally, the thickness of the clearance layer is between 0.2mm~0.3mm.
Optionally, for the thickness of the sealing ring between 4mm~15mm, the groove width of the gas pressure relief slot accounts for the sealing ring
The 12%~15% of thickness, the summation of the groove width of multiple gas pressure relief slots account for the 40%~45% of the thickness of the sealing ring.
Optionally, the drain pan is arc groove, and the radius of corner of the arc groove is between 0.2mm~0.3mm.
Optionally, the material of the O-ring is nitrile rubber, and the material of the sealing ring is polytetrafluoroethylene (PTFE).
The beneficial effect of the embodiment of the present invention includes:
Sealing element provided in an embodiment of the present invention, including O-ring and sealing ring, O-ring are set on the outer wall of sealing ring,
The outer wall of sealing ring is equipped with gas pressure relief slot, and gas pressure relief slot is located at the knot of two parts along the whole circle setting of sealing ring circumferencial direction, sealing element
Between conjunction face, one of part is set in another part, there is gap between two parts, and when equipment works, work is situated between
Matter can be flow in gap, the working media of sealing element barrier seal end face two sides, and working media can be point with sealing element
Every flowing the working media in gap can only in the respective side end clearance in sealing element both ends, the work at sealing element both ends
Make medium squeeze sealing element, O-ring and the sealing surfaces of the contact of sealing ring outer wall by extraneous bias effect, bias effect can shadow
Sealing effect is rung, in the prior art, bias effect makes seal loading uneven, causes leakage phenomenon, this reality at sealing
Example is applied by the way that gas pressure relief slot is arranged in the periphery of sealing ring, enclosed watch area of the O-ring with the contact of sealing ring outer wall is changed, makes
The contact area of O-ring and sealing ring reduces, and extraneous biasing force is redistributed, and adjusts O-ring and sealing ring outer wall
Contact pressure distribution, makes contact pressure tend to be uniformly distributed, to improve sealing effect.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is one of seal configuration schematic diagram provided in an embodiment of the present invention；
Fig. 2 is sealing element partial enlargement structural representation provided in an embodiment of the present invention；
Fig. 3 is the two of seal configuration schematic diagram provided in an embodiment of the present invention；
Fig. 4 is one of seal ring structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the enlarged drawing in Fig. 4 at A；
Fig. 6 is the two of seal ring structure schematic diagram provided in an embodiment of the present invention；
Fig. 7 is sealing part works schematic diagram provided in an embodiment of the present invention.
Icon: 10- sealing element；11-O shape circle；12- sealing ring；121- gas pressure relief slot；122- drain pan；D- groove width；T- is thick
Degree.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
Fig. 1 is please referred to, the present embodiment provides a kind of sealing elements 10 comprising O-ring 11 and sealing ring 12,11 sets of O-ring
It is located on the outer wall of sealing ring 12, the outer wall of sealing ring 12 is circumferentially with gas pressure relief slot 121.
It should be noted that first, as shown in figure 3, O-ring 11 and sealing ring 12 are the circular ring structure of whole circle, O-ring
11 are set in and form whole sealing element 10 on the outer wall of sealing ring 12, and sealing element 10 sets two parts being arranged in a device
For sealing between faying face, prevent the working media (hydraulic oil of such as excavator) in equipment from revealing between faying face.
Second, the outer wall of sealing ring 12 is equipped with gas pressure relief slot 121, and gas pressure relief slot 121 is arranged along the whole circle of 12 circumferencial direction of sealing ring,
As shown in fig. 7, sealing element 10 is located between the faying face for the part that two are arranged, there are gap, equipment work between two parts
When, working media Q can be flow in gap, and sealing element 10 obstructs working media Q, make 10 both ends working media Q of sealing element can only
In respective side flow, the end face of the working media Q squeeze sealing member 10 of 10 both ends of the surface of sealing element makes sealing element 10 by inclined
Pressure, i.e., the compression degree on sealing element 10 everywhere is different, will affect sealing effect in this way.The present embodiment passes through in sealing ring 12
Periphery be arranged gas pressure relief slot 121, change the enclosed watch area of O-ring 11 with the contact of 12 outer wall of sealing ring, make 11 He of O-ring
The contact area of sealing ring 12 reduces, and extraneous biasing force is redistributed, and adjusts connecing for O-ring 11 and 12 outer wall of sealing ring
Touch pressure distribution, makes contact pressure tend to be uniformly distributed, to improve sealing effect.
Third, as shown in Fig. 2, the inner wall of sealing ring 12 is circumferentially with gas pressure relief slot 121, the gas pressure relief slot 121 of inner wall is also to use
In pressure release, the gas pressure relief slot 121 of principle and outer wall similarly pushes away card, reduces the contact surface area of sealing ring 12 inner wall and part, again
Extraneous biasing force is distributed, the contact pressure distribution of part and 12 inner wall of sealing ring is adjusted, contact pressure is made to tend to uniform point
Cloth, to improve sealing effect.
Illustratively, groove width d × groove depth size of gas pressure relief slot 121 is between 0.6mm × 0.4mm~0.8mm × 0.6mm.
Gas pressure relief slot 121 is located on the outer wall and inner wall of sealing ring 12, along the circumferential setting of sealing ring 12, the circumference of sealing ring 12
Perimeter is the length of gas pressure relief slot 121, then the size of the groove width d of gas pressure relief slot 121 is between 0.6mm~0.8mm, the ruler of groove depth
It is very little between 0.4mm~0.6mm, such setting enables gas pressure relief slot 121 preferably to adjust the distribution of contact pressure, plays
The effect of excellent sealing.
4th, the material of O-ring 11 is nitrile rubber, and nitrile rubber oil resistivity is fabulous, and wearability is higher, heat resistance compared with
It is good, in addition, also there is good water resistance, air-tightness and excellent adhesive property, the O-ring 11 made using nitrile rubber,
Characteristic with good oil resistant, water resistant, anti-solvent and anti-high pressure oil also has askew, the wear-resistant and extending force of good compression.
The material of sealing ring 12 be polytetrafluoroethylene (PTFE), polytetrafluoroethylene (PTFE) have high resistance to chemical corrosion, high temperature resistant,
It is weatherability, ageing-resistant, sealing ring 12 is made using it, keeps the sealing effect of sealing ring 12 good, is unlikely to deform.
Sealing element 10 provided in an embodiment of the present invention, O-ring 11 are set on 12 outer wall of sealing ring, the outer wall of sealing ring 12
Equipped with gas pressure relief slot 121, gas pressure relief slot 121 is located at two adjacent parts along the whole circle setting of 12 circumferencial direction of sealing ring, sealing element 10
Between faying face, one of part is set in another part, there is gap between two parts, when equipment works, work
MEDIUM Q can be flow in gap, and the working media Q of 10 barrier seal of sealing element, 10 end face two sides, working media Q can be with close
Sealing 10 is to separate, and flow the working media Q in gap can only in the respective side end clearance in 10 both ends of sealing element, close
The working media Q squeeze sealing member 10 at 10 both ends of sealing changes O shape by the way that gas pressure relief slot 121 is arranged in the periphery of sealing ring 12
11 and the sealing surfaces of the contact of 12 outer wall of sealing ring are enclosed, the contact area of O-ring 11 and sealing ring 12 is reduced, adjust O shape
Circle 11 is distributed with the sealing surfaces of the contact of 12 outer wall of sealing ring by the contact pressure of sealing ring 12 when extraneous bias effect, to change
Kind sealing effect.
Specifically, the quantity of the gas pressure relief slot 121 on outer wall is N, and N is the natural number greater than zero；Gas pressure relief slot 121 on inner wall
Quantity be N+1, the gas pressure relief slot 121 on gas pressure relief slot 121 and inner wall on outer wall is uniformly arranged on outer wall and inner wall respectively, and
Gas pressure relief slot 121 on outer wall and the gas pressure relief slot on inner wall 121 are staggered.
The quantity of gas pressure relief slot 121 on inner wall than the gas pressure relief slot 121 on outer wall quantity more than one, and it is multiple on outer wall
Gas pressure relief slot 121 is uniformly arranged on the outer wall, and multiple gas pressure relief slots 121 on inner wall are uniformly arranged on inner wall, the pressure release on outer wall
Gas pressure relief slot 121 on slot 121 and inner wall illustratively, on outer wall sets that there are four gas pressure relief slots 121 in staggered, and inner wall is equipped with
Three gas pressure relief slots 121, then on inner wall a gas pressure relief slot 121 is located on outer wall and is arranged between two adjacent gas pressure relief slots 121.
Such setting can preferably adjust the pressure distribution of inner and outer wall, so that 12 pressure release effect of sealing ring is more preferable.
Further, the gas pressure relief slot 121 on outer wall and the gas pressure relief slot on inner wall 121 are respectively arranged with multiple, multiple to let out
Indent 121 is laid in the outer wall and inner wall of sealing ring 12.Multiple gas pressure relief slots 121 being uniformly arranged can preferably adjust O-ring
11 and sealing ring 12 contact pressure distribution.
Optionally, for the thickness t of sealing ring 12 between 4mm~15mm, the groove width d of gas pressure relief slot 121 accounts for the thickness of sealing ring 12
The 12%~15% of t is spent, the summation of the groove width d of multiple gas pressure relief slots 121 accounts for the 40%~45% of the thickness t of sealing ring 12.
When the thickness t of sealing ring 12 is between 4mm~15mm, the sealing effect of the sealing element 10 of the present embodiment is best.
When the thickness t of sealing ring 12 is between 4mm~15mm, the groove width d of a gas pressure relief slot 121 accounts for the thickness of sealing ring 12
The 12%~15% of t is spent, when gas pressure relief slot 121 has multiple, the summation of the groove width d of multiple gas pressure relief slots 121 accounts for the thickness t of sealing ring 12
40%~45%.
Such setting had not only defined the groove width d of single gas pressure relief slot 121, but also defining can be to greatest extent on sealing ring 12
The quantity of gas pressure relief slot 121 is arranged on ground, while making to meet pressure release demand, and meets the structural strength of sealing ring 12, guarantees sealing
The sealing performance of ring 12 does not cause the quantity of gas pressure relief slot 121 excessive, so that sealing ring 12 fails.
Optionally, as shown in Fig. 2, the cross section of O-ring 11 is rectangle.
When the maximum contact pressure for the sealing surfaces that O-ring 11 and 12 outer wall of sealing ring contact is greater than equipment operating pressure
When, it is able to achieve sealing.The section of existing O-ring is O shape, and the present embodiment uses the O-ring 11 of rectangular section, by largely trying
It tests data comparison to obtain, the O-ring compression ratio of O tee section is between 15%~30%, the compression ratio of the O-ring 11 of rectangular section
Between 8%~14%, compression ratio be O-ring 11 be packed into seal groove after, because being squeezed, section generation compression deformation rate, and
Compression ratio is related to aging speed, in the biggish situation of compression ratio, the O-ring meeting natural aging of O tee section, and elasticity drop
It is low, permanent deformation is generated, the part that has of the O-ring of O tee section is squeezed into the gap of sealing after deformation, is damaged, is led
Cause seal failure.The present embodiment uses the O-ring 11 of rectangular section, and the compression ratio than the O-ring of O tee section is small, therefore rectangle
The aging speed of the O-ring 11 in section is slower, so that 11 long service life of O-ring of rectangular section, is unlikely to deform, therefore its is close
It is also preferable to seal effect.
Optionally, as shown in Fig. 2, the end face of sealing ring 12 is equipped with drain pan 122.
Drain pan 122 is located at the end face of sealing ring 12, and two end faces of sealing ring 12 are respectively equipped with drain pan 122.Often
Drain pan 122 on a end face is equipped with multiple, and each end face is circumferential end surfaces, and multiple drain pans 122 in circumferential end surfaces are equal
Cloth setting, and multiple drain pans 122 on two end faces are staggered.
Illustratively, as shown in figure 4, being set on an end face of sealing ring 12 there are four drain pan 122, this four drain pans
122 circumference uniform distributions are arranged, i.e., the angle between two neighboring drain pan 122 is 90 °；Fig. 6 is the bottom view of the position Fig. 4, in Fig. 6
It also is provided with the drain pan 122 of four circumference uniform distributions, the angle between two neighboring drain pan 122 is 90 °, can be seen by Fig. 4 and Fig. 6
Out, four drain pans 122 in Fig. 4 and four drain pans 122 in Fig. 6 are not at the same position of sealing ring 12, for staggeredly
Arrangement.
Before the setting of drain pan 122 can make part time job, working media can be discharged in advance in drain pan 122, to part into
Row lubrication, when realizing equipment starting, the part in equipment runs smoothly, fricton-tight.
Multiple drain pans 122 are laid in the end face of sealing ring 12, and the working media Q accommodated in advance is made to better contact with zero
Each section of part, sufficient lubrication, even running when being more advantageous to equipment starting.
Multiple drain pans 122 being staggered on two end faces, enable drain pan 122 to be uniformly covered with sealing as much as possible
Two end faces of ring 12 can drain in advance for working media Q and provide greater number of drain pan 122, be conducive to more preferable to part
Ground lubrication, to improve part traveling comfort.
Further, as shown in figure 5, drain pan 122 is arc groove, the radius of corner of arc groove 0.2mm~
Between 0.3mm.
Arc groove is generally used for the biggish part of stress, and the drain pan 122 of sealing ring 12 uses arc groove, so that close
Seal ring 12 can bear biggish power, to keep sealing ring 12 wear-resistant.
Specifically, the radius of corner of arc groove is between 0.2mm~0.3mm, when radius of corner is less than 0.2mm, circle
Arc groove is too small, and the amount of the working media inside accommodated in advance is smaller, is not enough to lubricating detail well, when starting equipment,
Part is unable to even running because instantaneously rubbing.
When radius of corner is greater than 0.3mm, arc groove is excessive, and the amount of the working media inside accommodated in advance is larger, meeting
The possibility for causing working media to overflow, cannot play the effect of sealing.
Setting of the radius of corner of arc groove between 0.2mm~0.3mm, enables the size of arc groove to hold in right amount
Working media is set, even running and is effectively sealed when equipment can be enable to start.
Optionally, clearance layer is formed between the inner wall of O-ring 11 and the outer wall of sealing ring 12.
O-ring 11 is set on the outer wall of sealing ring 12, between having between the inner wall of O-ring 11 and the outer wall of sealing ring 12
Gap, to form clearance layer, that is, O-ring 11 and sealing ring 12 are clearance fit, and clearance fit influences the reliability of its sealing.
Specifically, the thickness of clearance layer is between 0.2mm~0.3mm.
When the thickness of clearance layer is less than 0.2mm, gap is too small, so that O-ring 11 and sealing ring 12 are arranged ground tension, O shape
The extruding force that circle 11 is squeezed sealing ring 12 by the power of exterior part is excessive, is easy to damage sealing ring 12.
The thickness of clearance layer be greater than 0.3mm when, gap is excessive so that O-ring 11 and sealing ring 12 be arranged it is excessively loose, work
MEDIUM Q (such as hydraulic oil) leaks easily from this, is unfavorable for sealing.
When the thickness of clearance layer is between 0.2mm~0.3mm, O-ring 11 and sealing ring 12 can be made ordinatedly to seal effect
Fruit is good, and the long service life of O-ring 11 and sealing ring 12, is conducive to prolonged working seal.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of sealing element (10) characterized by comprising O-ring (11) and sealing ring (12), the O-ring (11) are arranged
On the outer wall of the sealing ring (12), the outer wall of the sealing ring (12) is circumferentially with gas pressure relief slot (121).
2. sealing element (10) according to claim 1, which is characterized in that the cross section of the O-ring (11) is rectangle.
3. sealing element (10) according to claim 1, which is characterized in that the end face of the sealing ring (12) is equipped with drain pan
(122)。
4. sealing element (10) according to claim 1, which is characterized in that the inner wall of the sealing ring (12) also circumferentially is provided with
Gas pressure relief slot (121), the quantity of the gas pressure relief slot (121) on the outer wall are N, and N is the natural number greater than zero；Letting out on the inner wall
The quantity of indent (121) is N+1, and the gas pressure relief slot difference (121) on the gas pressure relief slot (121) and the inner wall on the outer wall is uniformly distributed
Setting, and the gas pressure relief slot (121) on the outer wall and the gas pressure relief slot (121) on the inner wall are staggered.
5. sealing element (10) according to claim 3, which is characterized in that two end faces of the sealing ring (12) are set respectively
There are multiple drain pans (122), and multiple drain pans (122) of two end faces are staggered.
6. described in any item sealing elements (10) according to claim 1~5, which is characterized in that the inner wall of the O-ring (11) and
Clearance layer is formed between the outer wall of the sealing ring (12).
7. sealing element (10) according to claim 6, which is characterized in that the thickness of the clearance layer is in 0.2mm~0.3mm
Between.
8. sealing element (10) according to claim 4, which is characterized in that the thickness (t) of the sealing ring (12) 4mm~
Between 15mm, 12%~15%, Duo Gesuo of the thickness (t) of groove width (d) the Zhan Suoshu sealing ring (12) of the gas pressure relief slot (121)
State the groove width (d) of gas pressure relief slot (121) summation account for the sealing ring (12) thickness (t) 40%~45%.
9. sealing element (10) according to claim 3, which is characterized in that the drain pan (122) is arc groove, described
The radius of corner of arc groove is between 0.2mm~0.3mm.
10. sealing element (10) according to claim 1, which is characterized in that the material of the O-ring (11) is the fine rubber of fourth
Glue, the material of the sealing ring (12) are polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910833137.8A CN110425284B (en) | 2019-09-04 | 2019-09-04 | Sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910833137.8A CN110425284B (en) | 2019-09-04 | 2019-09-04 | Sealing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425284A true CN110425284A (en) | 2019-11-08 |
| CN110425284B CN110425284B (en) | 2024-05-28 |
Family
ID=68417418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910833137.8A Active CN110425284B (en) | 2019-09-04 | 2019-09-04 | Sealing element |
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| Country | Link |
|---|---|
| CN (1) | CN110425284B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725954A (en) * | 2019-11-18 | 2020-01-24 | 广州市阪上橡胶制品有限公司 | Novel hydraulic wear-resistant sealing ring and processing technology |
| CN111878584A (en) * | 2020-07-30 | 2020-11-03 | 安徽日亮氟塑密封件有限公司 | PTFE lip and rubber material combined type sealing main lip |
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| CN110030382A (en) * | 2019-05-17 | 2019-07-19 | 永红保定铸造机械有限公司 | A kind of sealing structure between the cylinder and cover to relatively rotate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110725954A (en) * | 2019-11-18 | 2020-01-24 | 广州市阪上橡胶制品有限公司 | Novel hydraulic wear-resistant sealing ring and processing technology |
| CN111878584A (en) * | 2020-07-30 | 2020-11-03 | 安徽日亮氟塑密封件有限公司 | PTFE lip and rubber material combined type sealing main lip |
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