CN207880077U - A kind of rotation PTFE oil sealings - Google Patents
A kind of rotation PTFE oil sealings Download PDFInfo
- Publication number
- CN207880077U CN207880077U CN201820265842.3U CN201820265842U CN207880077U CN 207880077 U CN207880077 U CN 207880077U CN 201820265842 U CN201820265842 U CN 201820265842U CN 207880077 U CN207880077 U CN 207880077U
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- seal
- elastomer
- ptfe
- rotation
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 123
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 63
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 63
- 229920001971 elastomer Polymers 0.000 claims abstract description 45
- 239000000806 elastomer Substances 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 59
- 241000283216 Phocidae Species 0.000 description 32
- 230000000694 effects Effects 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001347978 Major minor Species 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 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
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a kind of rotation PTFE oil sealings, belong to PTFE oil seal techniques field.It includes elastomer and seal, and the inside of the elastomer is equipped with groove, and the outside of seal is equipped with boss, elastomer and seal by being matched in boss insertion groove；The groove both sides centre position of shown elastomer protrudes outward, and fastens with the place of being recessed inwardly among the boss both sides of seal；The peripheral surface of the elastomer has fold or equipped with protrusion；The inside of the seal is equipped with sealing lip, and the spring for making sealing lip radially tighten is equipped on sealing lip.The utility model oil sealing uses the inside and outside composite structure form of seal and elastomer, has both reduced processing and manufacturing difficulty, convenient for preferably installation and dismounting, and meets equipment to sealing element high-performance, the requirement of long-life.
Description
Technical field
The utility model belongs to PTFE oil seal techniques field, more specifically to a kind of rotation PTFE oil sealings, mainly answers
For the sealing of the rotary shafts such as bearing, gear-box, motor, wind turbine, prevent that internal flow from leaking and foreign matter enters and sets
It is standby.
Background technology
Oil sealing is the custom appellation of general sealing element, is exactly briefly the sealing of lubricating oil.It is for oil sealing fat (oil
Be most common liquid substance in transmission system, also refer to the meaning of general liquid substance) mechanical organ, it is by transmission parts
It is middle that the component that lubricates is needed to be isolated with output component, it is unlikely to allow oil seepage.From the sealing function of oil sealing, feature, structure
Type, working condition and sealing mechanism etc. are segmented into diversified forms and different calls, but traditionally generally by rotary shaft lip
Sealing ring is oil sealing, and static seal and dynamic sealing (general to move back and forth) are with sealing element sealing element.
Nitrile rubber and fluorubber material are to use more extensive oil sealing material, the former is of low cost, the latter's heatproof with
Leakproofness has clear improvement, but cost is higher, and still has certain bad general character of General Purpose Rubber material, as wear-resisting property is poor,
Service life is short, reacts especially sensitive etc. to the bias of axis, and leakage phenomenon is still commonplace；Polytetrafluoroethylene (PTFE) has outstandingization
Stability, thermal stability, antifriction quality and self lubricity are learned, in addition to free fluorine and alkali metal, to chemical substance, solvent, hydroxide
Closing object and acid has excellent corrosion resisting property.
Polytetrafluoroethyloil oil seals, also known as PTFE oil sealings, PTFE oil sealings currently on the market are stainless steel casing and sheet of PTFE
Combination, or bonded with PTFE using the rubber skeleton of compression molding, or be made of pure PTFE.Conventional PTFE oil sealings
It is that the rubber bodies of skeleton compression molding are included using PTFE as primary seal lip as secondary lip, there are mould structure complexity, manufacturing process is difficult
Degree is big, it is of high cost the problems such as.
For example, Chinese Patent Application No. is：201320570188.4 publication date is：The patent text on March 26th, 2014
It offers, discloses a kind of novel mechanical shaft seal, it includes stainless steel casing, and the stainless steel casing is by outer ring and inner ring structure
At, it is equipped with kerve on the inside of the outer ring, inner ring is installed on kerve, seal assembly is equipped between the outer ring and inner ring, it is described close
Sealing assembly is made of three sealing rings, and stainless steel gasket is equipped between sealing ring, is in horn-like at the sealing ring lip.The party
For case using stainless steel casing and sheet of PTFE as seal composition, which is utilized the good spy of self lubricity of PTFE
Point has better effects under lack of lubrication, high-speed condition, but due to using elastic conjunction between sealing element and cavity, installs and tear open
It is big to unload difficulty, easily causes cavity damage, and time-consuming, laborious.
For another example, Chinese Patent Application No. is：201520483553.7 publication date is：The patent text on December 16th, 2015
It offers, discloses a kind of full polytetrafluoroethyloil oil seals of the self sealss monitored, including the annular sealing member made of polytetrafluoroethylene (PTFE)
And with the integrally formed primary seal lip of seal and secondary sealing lip, the primary seal lip and secondary sealing lip along seal inner wall simultaneously
Row's setting, the circumferencial direction along the seal are equipped with multiple monitoring oilholes, and the monitoring oilhole is located at primary seal lip and pair is close
It seals between lip.The program is using whole PTFE structures, and due to PTFE poor flexibilities, sealing effect is poor.
Invention content
1, it to solve the problems, such as
The utility model provides a kind of rotation PTFE oil sealings, and its object is to solve existing PTFE oil sealings manufacturing process difficulty
Larger, cost is higher, and the problem that installation is relatively inconvenient with dismounting.The oil sealing uses the inside and outside combination of seal and elastomer
Structure type had both reduced processing and manufacturing difficulty, convenient for preferably installation and dismounting, and met equipment to sealing element high-performance, length
The requirement in service life.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
The inside of a kind of rotation PTFE oil sealings, including elastomer and seal, the elastomer is equipped with groove, seal
Outside is equipped with boss, elastomer and seal by being matched in boss insertion groove.
As a further improvement, the groove both sides centre position of the elastomer protrudes outward, and with the boss of seal
The place of being recessed inwardly fastens among both sides.
As a further improvement, the groove include the first trapezoidal annular groove and the second trapezoidal annular groove, the first trapezoidal annular groove and
The intersection of second trapezoidal annular groove protrudes outward；The boss includes the first trapezoid boss and the second trapezoid boss, and first is trapezoidal
The intersection of boss and the second trapezoid boss is recessed inwardly.
As a further improvement, the elastomer is rubber material, seal is polytetrafluoroethylene (PTFE).
As a further improvement, the peripheral surface of the elastomer has fold or equipped with protrusion.
As a further improvement, the inside of the seal is equipped with sealing lip.
As a further improvement, being equipped with the spring for making sealing lip radially tighten on the sealing lip.
As a further improvement, the spring is coil spring or V-type spring.
As a further improvement, the sealing lip is single lip, lips in the same direction, reversed lips, or including main lip and secondary lip.
As a further improvement, the sealing lip is equipped with oil drive back thread with axis contact site.
3, advantageous effect
Compared with the prior art, the beneficial effects of the utility model are：
(1) the utility model rotates PTFE oil sealings, is designed using split structure, by the inside and outside edge of seal and elastomer
Embedding to be composed, the elastomer of outer ring plays the role of pressure compensation, and internal seal can be protected not to be damaged, and both reduces
Difficulty is fabricated, convenient for preferably installation and dismounting, and meets equipment to sealing element high-performance, the requirement of long-life；
And elastomer and seal are embedded in groove by boss and are matched, and associativity is good, and leakproofness is preferable between the two, Bu Huicun
It is leaking, and there is stronger self-centering ability, to neutral good, non-deformability is also relatively strong；The oil sealing is relative to traditional rubber
Glue oil sealing can have longer service life, adapt to the performances such as higher speed, temperature, pressure.
(2) the utility model rotates PTFE oil sealings, and the groove both sides centre position of elastomer protrudes outward, and and seal
Boss both sides among the place of being recessed inwardly fasten, such structure type can have simultaneously preferable leakproofness and makes disposition by oneself
Energy；It is especially protruded outward at the first trapezoidal annular groove of the utility model further groove and the boundary of the second trapezoidal annular groove, the first of boss
Trapezoid boss and the second trapezoid boss intersection are recessed inwardly, and on the basis of meeting above-mentioned form, are also convenient for producing and processing.
(3) the utility model rotates PTFE oil sealings, and elastomer uses rubber material, and seal uses PTFE material, i.e.,
Elastic compensating is played the role of in outer ring, and inner ring is then to be contacted with axis, plays good sealing function, PTFE materials, friction coefficient
Low, self-lubricating property is good, and heatproof, resistance to medium function are excellent, is suitble to the various workings such as high temperature, high speed, lack of lubrication, uses the longevity
Life length.
(4) the utility model rotates PTFE oil sealings, and the peripheral surface of elastomer has fold or equipped with protrusion, is mounted on slot
In, the sealing effect between hole wall can be enhanced.
(5) the utility model rotates PTFE oil sealings, and the sealing lip on seal is directly contacted with axis, plays the role of oil sealing,
And can radially be tightened by spring on sealing lip, increase the pretightning force with axis surface, further increases oil-sealing performance；Meanwhile it can
Single lip, lips in the same direction, reversed double can be used in the form for needing to select sealing lip according to sealing occasion, oil pressure, the parameters such as rotating speed
Lip, or including main lip and secondary lip, and spring also can select coil spring or V-type spring according to structure of sealing lip.
(6) the utility model rotates PTFE oil sealings, and sealing lip and axis contact site are equipped with oil drive back thread, in axis rotary course into
Row oil return, further increases oil-sealing performance.
Description of the drawings
Fig. 1 is that the utility model rotates a form of structure chart of PTFE oil sealings；
Fig. 2 is the structure chart that the utility model rotates PTFE oil sealing elastomers；
Fig. 3 is the structure chart that the utility model rotates seal in PTFE oil sealings；
Fig. 4 the utility model rotates the structure chart of PTFE second of form of oil sealing；
Fig. 5 the utility model rotates the structure chart of the third form of PTFE oil sealings；
Fig. 6 the utility model rotates the structure chart of PTFE the 4th kind of form of oil sealing；
Fig. 7 the utility model rotates the structure chart of PTFE the 5th kind of form of oil sealing.
In figure：100, elastomer；110, groove；111, the first trapezoidal annular groove；112, the second trapezoidal annular groove；120, raised；
200, seal；210, boss；211, the first trapezoid boss；212, the second trapezoid boss；220, sealing lip；300, spring.
Specific implementation mode
The utility model is further described below with reference to specific embodiments and the drawings.
Embodiment 1
As shown in Figure 1, a kind of rotation PTFE oil sealings of the present embodiment, break through the oil enveloping structure of traditional monoblock type, using point
Body composite structure form, to make every effort to take into account production cost, installation portability and sealing effect, mainly by elastomer 100 and close
Seal 200 two parts of body composition.
As shown in Figures 2 and 3, elastomer 100 is annular, and inside is equipped with groove 110, and the outside of seal 200 is equipped with
Boss 210, elastomer 100 and seal 200 are embedded in groove 110 by boss 210 and are matched, complete to be combined into
Oil sealing.Wherein, elastomer 100 uses general rubber material, seal 200 then to use polytetrafluoroethylene (PTFE), i.e. bullet is played in outer ring
Property compensating action, and inner ring then be contacted with axis, play good sealing function, PTFE materials, friction coefficient is low, self lubricity
Can be good, heatproof, resistance to medium function are excellent, are suitble to various workings, the service lifes such as high temperature, high speed, lack of lubrication long.Such group
Close structure type, both reduced processing and manufacturing difficulty, convenient for preferably installation and dismounting, and meet equipment to sealing element high-performance,
The requirement of long-life.
It should be noted that Split assembled structure type is more demanding for associativity between the two, it is desirable that have compared with
Good fiting effect, therefore, the 110 both sides centre position of groove of the present embodiment elastomer 100 protrudes outward, and and seal
The place of being recessed inwardly fastens among 200 210 both sides of boss, can reach preferable sealing performance and self-centering performance.Specifically
Ground, groove 110 include the first trapezoidal annular groove 111 and the second trapezoidal annular groove 112, the first trapezoidal annular groove 111 and the second trapezoidal annular groove
112 intersection protrudes outward；Boss 210 includes the first trapezoid boss 211 and the second trapezoid boss 212, the first trapezoid boss
211 and second the intersection of trapezoid boss 212 be recessed inwardly, to which flexible boss 210 can be filled in groove 110, lead to
Cross elastic recovery, and each face coordinates, can form good sealing, at the same Internal and external cycle can centering, self-centering performance is good, and this
The production and processing of kind shape is also comparatively easy.
In addition, the peripheral surface of elastomer 100 has fold, and it is more preferable with hole wall contact in slot, it being capable of shape
At better seal；And the inside of seal 200 is directly contacted with axis equipped with sealing lip 220, plays the role of oil sealing.
From the foregoing, it will be observed that the oil sealing of the present embodiment is designed using split structure, the elastomer 100 of outer ring plays pressure compensation
Effect, and internal seal can be protected not to be damaged, processing and manufacturing difficulty has both been reduced, preferably installation and dismounting are convenient for,
Meet equipment again to sealing element high-performance, the requirement of long-life；And elastomer 100 and the insertion of seal 200 coordinate, knot
Conjunction property is good, and leakproofness is preferable between the two, and there is no leakages, and has stronger self-centering ability, to neutral good, resistance to deformation
Ability is also relatively strong；The oil sealing can have longer service life, adapt to higher speed, temperature relative to traditional rubber oil sea
The performances such as degree, pressure.
Embodiment 2
A kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 1, except that：Elastomer 100
Peripheral surface have protrusion 120, substitute fold, can equally play raising sealing function.
Embodiment 3
As shown in figure 4, a kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 2, different
It is：The spring 300 for making sealing lip 220 radially tighten is installed on sealing lip 220, increases the pretightning force with axis surface, further
Improve oil-sealing performance；And spring 300 is coil spring.
Embodiment 4
As shown in figure 5, a kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 2, different
It is：The spring 300 for making sealing lip 220 radially tighten is installed on sealing lip 220, increases the pretightning force with axis surface, further
Improve oil-sealing performance；And spring 300 is V-type spring.
Embodiment 5
As shown in fig. 6, a kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 2, but area
Not.Sealing lip 220 can also need to select using single lip according to parameters such as sealing occasion, oil pressure, rotating speeds in embodiment 2
The number quantity and form of sealing lip, the present embodiment uses lips in the same direction, to improve sealing effect.
Embodiment 6
As shown in fig. 7, a kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 6, different
It is：Sealing lip 220 uses reversed lips.
Embodiment 7
A kind of rotation PTFE oil sealings of the present embodiment, structure is substantially the same manner as Example 6, except that：Sealing lip 220
With there are two also tools, but it is divided into major-minor lip, main lip plays oil sealing, prevents the oil leakage inside working space, main lip is in axis
Ensure the compactness of lip and axis in rotation process, secondary lip mainly serves dust-proof, prevents introduced contaminants from entering working space
In internal oil, main lip is protected not destroyed by introduced contaminants, to which the sealing performance of main lip be effectively ensured.
Embodiment 8
A kind of rotation PTFE oil sealings of the present embodiment, embodiment 2-7 substantially, in sealing lip 220 and axis contact site
Position is equipped with oil drive back thread, carries out oil return in axis rotary course, further increases oil-sealing performance.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in also be the utility model one of embodiment, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of rotation PTFE oil sealings, including elastomer (100) and seal (200), it is characterised in that：The elastomer
(100) inside is equipped with groove (110), and the outside of seal (200) is equipped with boss (210), elastomer (100) and seal
(200) by being matched in the embedded groove (110) of boss (210).
2. a kind of rotation PTFE oil sealings according to claim 1, it is characterised in that：The groove of the elastomer (100)
(110) both sides centre position protrudes outward, and fastens with the place of being recessed inwardly among boss (210) both sides of seal (200).
3. a kind of rotation PTFE oil sealings according to claim 2, it is characterised in that：The groove (110) includes the first ladder
The intersection of shape annular groove (111) and the second trapezoidal annular groove (112), the first trapezoidal annular groove (111) and the second trapezoidal annular groove (112) to
Outer protrusion；The boss (210) includes the first trapezoid boss (211) and the second trapezoid boss (212), the first trapezoid boss
(211) it is recessed inwardly with the intersection of the second trapezoid boss (212).
4. a kind of rotation PTFE oil sealings according to claim 1 or 2 or 3, it is characterised in that：The elastomer (100) is
Rubber material, seal (200) are polytetrafluoroethylene (PTFE).
5. a kind of rotation PTFE oil sealings according to claim 1 or 2 or 3, it is characterised in that：The elastomer (100)
Peripheral surface has fold or equipped with raised (120).
6. a kind of rotation PTFE oil sealings according to claim 1 or 2 or 3, it is characterised in that：The seal (200)
Inside is equipped with sealing lip (220).
7. a kind of rotation PTFE oil sealings according to claim 6, it is characterised in that：It is equipped on the sealing lip (220)
Make the spring (300) that sealing lip (220) is radially tightened.
8. a kind of rotation PTFE oil sealings according to claim 7, it is characterised in that：The spring (300) is spiral shape bullet
Spring or V-type spring.
9. a kind of rotation PTFE oil sealings according to claim 6, it is characterised in that：The sealing lip (220) is single lip, same
To lips, reversed lips, or including main lip and secondary lip.
10. a kind of rotation PTFE oil sealings according to claim 9, it is characterised in that：The sealing lip (220) contacts with axis
Position is equipped with oil drive back thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265842.3U CN207880077U (en) | 2018-02-24 | 2018-02-24 | A kind of rotation PTFE oil sealings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265842.3U CN207880077U (en) | 2018-02-24 | 2018-02-24 | A kind of rotation PTFE oil sealings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207880077U true CN207880077U (en) | 2018-09-18 |
Family
ID=63497471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820265842.3U Active CN207880077U (en) | 2018-02-24 | 2018-02-24 | A kind of rotation PTFE oil sealings |
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| Country | Link |
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| CN (1) | CN207880077U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
-
2018
- 2018-02-24 CN CN201820265842.3U patent/CN207880077U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112728093A (en) * | 2021-01-05 | 2021-04-30 | 益航电子股份有限公司 | Rotary machine |
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